CN111894984A - PDC bearing outer ring assembly and manufacturing method thereof, PDC bearing inner ring assembly and manufacturing method thereof and PDC bearing - Google Patents

PDC bearing outer ring assembly and manufacturing method thereof, PDC bearing inner ring assembly and manufacturing method thereof and PDC bearing Download PDF

Info

Publication number
CN111894984A
CN111894984A CN202010753077.1A CN202010753077A CN111894984A CN 111894984 A CN111894984 A CN 111894984A CN 202010753077 A CN202010753077 A CN 202010753077A CN 111894984 A CN111894984 A CN 111894984A
Authority
CN
China
Prior art keywords
support ring
section
pdc bearing
polycrystalline diamond
extension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010753077.1A
Other languages
Chinese (zh)
Inventor
张海波
彭清
戴文久
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Juxin New Material Technology Co ltd
Original Assignee
Guangdong Juxin New Material Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Juxin New Material Technology Co ltd filed Critical Guangdong Juxin New Material Technology Co ltd
Priority to CN202010753077.1A priority Critical patent/CN111894984A/en
Publication of CN111894984A publication Critical patent/CN111894984A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/02—Carbon based material

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Rolling Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

The invention provides a PDC bearing outer ring assembly and a manufacturing method thereof, a PDC bearing inner ring assembly and a manufacturing method thereof and a PDC bearing. The PDC bearing includes a PDC bearing outer ring assembly and a PDC bearing inner ring assembly. The manufacturing method of the outer ring assembly of the PDC bearing comprises the steps of inserting the polycrystalline diamond compact into the support ring from the inner periphery and welding the polycrystalline diamond compact from the outer periphery of the support ring, and the manufacturing method of the inner ring assembly of the PDC bearing comprises the steps of inserting the polycrystalline diamond compact into the support ring from the outer periphery and welding the polycrystalline diamond compact from the inner periphery of the support ring. The PDC bearing provided by the invention effectively reduces the positioning difficulty and the welding difficulty and improves the production efficiency.

Description

PDC bearing outer ring assembly and manufacturing method thereof, PDC bearing inner ring assembly and manufacturing method thereof and PDC bearing
Technical Field
The invention relates to the technical field of bearings, in particular to a PDC bearing outer ring assembly, a PDC bearing inner ring assembly, a PDC bearing, a manufacturing method of the PDC bearing outer ring assembly and a manufacturing method of the PDC bearing inner ring assembly.
Background
The existing PDC bearing comprises a PDC bearing outer ring assembly and a PDC bearing inner ring assembly, wherein the PDC bearing outer ring assembly and the PDC bearing inner ring assembly respectively comprise a support ring and a plurality of polycrystalline diamond compacts. The polycrystalline diamond compact is cylindrical and comprises a hard alloy matrix layer and a polycrystalline diamond layer. Taking the PDC bearing outer ring assembly as an example, a plurality of circular blind holes are arranged on the inner peripheral surface of the support ring, and the blind holes are used for embedding and welding the polycrystalline diamond compact.
The installation of support ring and polycrystalline diamond compact and the difficult problem of welding have the location when welding to this kind of present PDC bearing, take PDC bearing outer ring subassembly as an example, polycrystalline diamond compact inserts the blind hole of support ring from the interior week of support ring after, need follow the interior week of support ring to polycrystalline diamond compact location, and need weld support ring and polycrystalline diamond compact from the interior week of support ring simultaneously, this sets up and makes location operation and welding operation produce the interact, increase location and the welding degree of difficulty, and polycrystalline diamond compact can only insert one by one and weld.
Disclosure of Invention
The first purpose of the invention is to provide the PDC bearing outer ring assembly capable of effectively reducing the welding difficulty.
The second purpose of the invention is to provide the PDC bearing inner ring assembly which effectively reduces the welding difficulty.
The third purpose of the invention is to provide a PDC bearing which effectively reduces the welding difficulty.
The fourth purpose of the invention is to provide a manufacturing method of the PDC bearing outer ring component which effectively reduces the welding difficulty.
The fifth purpose of the invention is to provide a manufacturing method of the PDC bearing inner ring assembly, which can effectively reduce the welding difficulty.
The PDC bearing outer ring assembly provided by the invention comprises a first support ring and a plurality of first polycrystalline diamond compacts fixed on the first support ring; the first support ring is provided with a plurality of first mounting through holes which penetrate through the first support ring along the radial direction of the first support ring, the first mounting through holes are provided with a first hole section and a second hole section which are sequentially communicated in the penetrating direction of the first mounting through holes, the first inner diameter of the first hole section is larger than the second inner diameter of the second hole section, and the first hole section is close to the axis of the first support ring relative to the second hole section; the first polycrystalline diamond compact comprises a first hard alloy matrix layer and a first polycrystalline diamond layer; in the axial direction of the first polycrystalline diamond compact, the first hard alloy substrate layer comprises a first extension section and a second extension section which are sequentially connected, the outer diameter of the first extension section is larger than that of the second extension section, the first extension section is provided with a first extension end part far away from the second extension section, the second extension section is provided with a second extension end part far away from the first extension section, the first polycrystalline diamond layer is positioned on the first extension end part, and a first working surface back to the first extension section is arranged on the first polycrystalline diamond layer; the first extension section is inserted in the first hole section, the second extension section is inserted in the second hole section, the first working surface protrudes from the inner periphery of the first support ring, and the second extension end is welded with the first support ring.
According to the scheme, the first installation through hole formed in the first support ring is a stepped hole and comprises a first hole section and a second hole section with inner diameter difference, the first hole section with the larger inner diameter is close to the inner periphery of the first support ring, correspondingly, the outline of the first polycrystalline diamond compact is stepped, after the first polycrystalline diamond compact is installed on the first installation through hole, the first polycrystalline diamond compact is matched with the stepped hole, the degree of freedom of the first polycrystalline diamond compact moving back to the axis in the radial direction is limited, and after the first polycrystalline diamond compact is located by the aid of the locating tool from the inner periphery, the first polycrystalline diamond compacts are effectively located simultaneously. And because the welding point between first polycrystalline diamond compact and the first support ring changes the periphery of first support ring into, go on in the periphery of first support ring when welding, so can not influence each other between welding tool and the positioning tool, and can accomplish after a location the welding of a plurality of first polycrystalline diamond compacts, consequently effectively reduce the welding degree of difficulty, improve production efficiency.
In a further aspect, the first support ring forms a first step surface between the first bore section and the second bore section, the first cemented carbide substrate layer forms a second step surface between the first extension section and the second extension section, and the first step surface and the second step surface abut against each other in a radial direction of the first support ring.
It is thus clear that after adopting positioning tool to fix a position first polycrystalline diamond compact from interior week, first step face and positioning tool then carry on spacingly from radial relative both sides to first polycrystalline diamond compact to improve the stability of location.
The further scheme is that the first working surfaces are concave arc surfaces, and the first working surfaces on the first polycrystalline diamond compacts are located on the same circumferential surface.
The PDC bearing inner ring assembly provided by the invention comprises a second support ring and a plurality of second polycrystalline diamond compacts fixed on the second support ring; the second support ring is provided with a plurality of second mounting through holes which penetrate through the second support ring along the radial direction of the second support ring, the second mounting through holes are provided with a third hole section and a fourth hole section which are sequentially communicated in the penetrating direction of the second mounting through holes, the third inner diameter of the third hole section is larger than the fourth inner diameter of the fourth hole section, and the third hole section is far away from the axis of the second support ring relative to the fourth hole section; the second polycrystalline diamond compact comprises a second hard alloy substrate layer and a second polycrystalline diamond layer; in the axial direction of the second polycrystalline diamond compact, the second hard alloy base layer comprises a third extending section and a fourth extending section which are sequentially connected, the outer diameter of the third extending section is larger than that of the fourth extending section, the third extending section is provided with a third extending end part far away from the fourth extending section, the fourth extending section is provided with a fourth extending end part far away from the third extending section, the second polycrystalline diamond layer is positioned on the third extending end part, and a second working surface facing away from the third extending section is arranged on the second polycrystalline diamond layer; the third extension section is inserted in the third hole section, the fourth extension section is inserted in the fourth hole section, the second working surface protrudes out of the periphery of the second support ring, and the fourth extension end is welded with the second support ring.
According to the scheme, the second mounting through hole formed in the second support ring is a stepped hole and comprises a third hole section and a fourth hole section with inner diameter difference, the third hole section with the larger inner diameter is close to the periphery of the second support ring, correspondingly, the outline of the second polycrystalline diamond compact is stepped, after the second polycrystalline diamond compact is mounted on the second mounting through hole, the second polycrystalline diamond compact is matched with the stepped hole, the degree of freedom of the second polycrystalline diamond compact moving towards the axis in the radial direction is limited, and after the second polycrystalline diamond compact is positioned by the positioning tool from the periphery, the second polycrystalline diamond compacts are effectively positioned simultaneously. And because the welding point between second polycrystalline diamond compact and the second support ring changes the interior circumference of second support ring into, go on at the interior circumference of second support ring when welding, so can not influence each other between welding tool and the positioning tool, and can accomplish after once fixing a position the welding of a plurality of second polycrystalline diamond compacts, consequently effectively reduce the welding degree of difficulty, improve production efficiency.
In a further scheme, a third step surface is formed between the third hole section and the fourth hole section by the second support ring, a fourth step surface is formed between the third extending section and the fourth extending section by the second hard alloy matrix layer, and the third step surface and the fourth step surface are mutually abutted in the radial direction of the second support ring.
It is thus clear that, after adopting positioning tool to fix a position second poly crystal diamond compact piece from the periphery, third step face and positioning tool then carry out spacingly from radial relative both sides to second poly crystal diamond compact piece to improve the stability of location.
The second working surface is an outer convex cambered surface, and the second working surfaces on the second polycrystalline diamond compacts are located on the same circumferential surface.
The PDC bearing provided by the third object of the invention comprises a PDC bearing outer ring component and a PDC bearing inner ring component, wherein the PDC bearing inner ring component is positioned on the inner periphery of the PDC bearing outer ring component; the PDC bearing outer ring component adopts the PDC bearing outer ring component; the PDC bearing inner ring component adopts the PDC bearing inner ring component; the first working surface cooperates with the second working surface.
By the scheme, no matter the outer ring assembly of the PDC bearing and the inner ring assembly of the PDC bearing, when the polycrystalline diamond compact is welded with the support ring, the stepped through holes are formed in the support ring, so that the positioning tool and the welding tool are respectively located on the inner side and the outer side of the support ring, mutual influence between the welding tool and the positioning tool cannot occur, welding of a plurality of second polycrystalline diamond compacts can be completed after one positioning, welding difficulty is effectively reduced, and production efficiency is improved.
A fourth object of the present invention is to provide a method for manufacturing the PDC bearing outer ring assembly, the method being used for manufacturing the PDC bearing outer ring assembly; the method of manufacturing includes installing a first polycrystalline diamond compact within the first installation via from an inner periphery of the first support ring; the first support ring and the second extension end are welded from the outer periphery of the first support ring.
A further scheme is that, after the step of mounting the first polycrystalline diamond compact in the first mounting through hole, before the step of welding the first support ring and the second extension end portion from the periphery of the first support ring, the method further includes: utilize positioning tool to fix a position PDC bearing outer ring subassembly, positioning tool and the axial end face cooperation of first working surface, the inner peripheral surface of first support ring and first support ring.
From top to bottom, this sets up and makes positioning tool can also further guarantee first polycrystalline diamond compact's position degree of accuracy outside effectively fixing a position first polycrystalline diamond compact and first supporting ring simultaneously, improves product quality.
The manufacturing method of the PDC bearing inner ring component is used for manufacturing the PDC bearing inner ring component; the manufacturing method comprises the steps of installing a second polycrystalline diamond compact in a second installation through hole from the periphery of a second support ring; the second support ring and the fourth extended end are welded from an inner circumference of the second support ring.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a PDC bearing of the present invention.
FIG. 2 is a schematic structural view of an embodiment of the PDC bearing outer ring assembly of the present invention.
FIG. 3 is a schematic structural diagram of an embodiment of an inner ring assembly of a PDC bearing of the present invention.
Fig. 4 is a schematic structural diagram of a first embodiment of the PDC bearing welding positioning tool of the present invention.
FIG. 5 is a schematic diagram of the PDC bearing outer ring assembly of the present invention mated with a first embodiment of a PDC bearing weld locator tool.
FIG. 6 is a schematic structural diagram of a second embodiment of the PDC bearing welding position tool of the present invention.
FIG. 7 is a schematic diagram of the engagement of an embodiment of an inner ring assembly for a PDC bearing in accordance with a second embodiment of a PDC bearing weld locator tool of the present invention.
Detailed Description
Referring to fig. 1 to 3, fig. 1 is a schematic structural view of an embodiment of the PDC bearing of the present invention. FIG. 2 is a schematic structural diagram of an embodiment of an outer ring assembly of a PDC bearing of the present invention, and FIG. 3 is a schematic structural diagram of an embodiment of an inner ring assembly of a PDC bearing of the present invention.
The PDC bearing includes a PDC bearing outer ring assembly 1001 and a PDC bearing inner ring assembly 1002, with the PDC bearing inner ring assembly 1002 located at an inner periphery of the PDC bearing outer ring assembly 1001. The PDC bearing outer ring assembly 1001 includes a first support ring 1 and a plurality of first polycrystalline diamond compacts 2 fixed on the first support ring 1, and the PDC bearing inner ring assembly 1002 includes a second support ring 3 and a plurality of second polycrystalline diamond compacts 4 fixed on the second support ring 3. In order to avoid the multiple first polycrystalline diamond compacts 2 and the multiple second polycrystalline diamond compacts 4 from being aligned to each other at the same time to generate the stuck state, the number of the first polycrystalline diamond compacts 2 should be different from the number of the second polycrystalline diamond compacts 4, and in this embodiment, the number of the second polycrystalline diamond compacts 4 is one less than that of the first polycrystalline diamond compacts 2.
The first polycrystalline diamond compact 2 has a first working surface 203 protruding from the inner periphery of the first support ring 1, the first working surface 203 is the surface of the first polycrystalline diamond layer 202, the first working surface 203 is an inward concave arc surface, and the plurality of first working surfaces 203 on the plurality of first polycrystalline diamond compacts 2 are located on the same circumferential surface. The second polycrystalline diamond compact 4 has a second working surface 403 protruding from the outer periphery of the second support ring 3, the second working surface 403 is the surface of the second polycrystalline diamond layer 402, the second working surface 403 is an outward convex arc surface, and the plurality of second working surfaces 403 on the plurality of second polycrystalline diamond compacts 4 are located on the same circumferential surface. The first working surface 203 cooperates with the second working surface 403.
Referring to FIG. 2, the structure of the PDC bearing outer ring assembly 1001 will first be described. The first support ring 1 is provided with a plurality of first mounting through holes 11 which penetrate through the first support ring 1 along the radial direction of the first support ring 1. In the penetrating direction of the first mounting through hole 11, the first mounting through hole 11 has a first hole section 111 and a second hole section 112 which are sequentially communicated, and the first hole section 111 is close to the axis of the first support ring 1 relative to the second hole section 112.
The first bore section 111 has a first inner diameter larger than a second inner diameter of the second bore section 112, and the first support ring 1 forms a first step surface 113 on the inner wall surface of the first mounting through hole 11 between the first and second bore sections 111 and 112 and facing the first bore section 111 in the radial direction due to the difference in inner diameters between the first and second bore sections 111 and 112. The first mounting through hole 11 arranged in a stepped manner is used for mounting the first polycrystalline diamond compact 2.
The first polycrystalline diamond compact 2 comprises a first hard alloy matrix layer 201 and a first polycrystalline diamond layer 202, and the first polycrystalline diamond compact 2 is formed by sintering diamond micro powder and a hard alloy substrate under the condition of ultrahigh pressure and high temperature. In the axial direction of the first polycrystalline diamond compact 2, the first cemented carbide substrate layer 201 comprises a first extension section 211 and a second extension section 212 which are connected in sequence, the outer diameter of the first extension section 211 is larger than that of the second extension section 212, in the axial direction of the first polycrystalline diamond compact 2, the first extension section 211 is provided with a first extension end part far away from the second extension section 212, the first polycrystalline diamond layer 202 is positioned on the first extension end part, and the first working surface 203, which faces away from the first extension section 211, is arranged on the first polycrystalline diamond layer 202. The second extension 212 has a second extension end 204 remote from the first extension 211, the second extension end 204 being intended to be welded with the first support ring 1.
In addition, since the first extension 211 and the second extension 212 have an outer diameter difference, the first extension 211 and the second extension 212 are connected in a stepped manner, and the first extension 211 having a larger outer diameter forms a second step surface 213 facing in the axial direction of the first cemented carbide base layer 201.
The inlet of the first mounting through hole 11 is located on the inner circumferential surface 101 of the first support ring 1, the first cemented carbide substrate layer 201 is inserted into the first mounting through hole 11 along the radial direction of the first support ring 1 away from the axis of the first support ring 1, the first extension section 211 is inserted into the first hole section 111, the second extension section 212 is inserted into the second hole section 112, the first step surface 213 and the second step surface 113 are in limit fit with each other in the radial direction of the first support ring 1, and the first working surface 203 protrudes out of the inner circumferential surface 101 of the first support ring 1. The second extending end portion 204 reaches the outer peripheral surface 102 of the first support ring 1, and the welding device welds the first support ring 1 and the second extending end portion 204 from the outer periphery of the first support ring 1.
Referring to FIG. 3, the structure of the PDC bearing inner ring assembly 1002 is described below. The second support ring 3 is provided with a plurality of second mounting through holes 31 penetrating through the second support ring 3 along the radial direction of the second support ring 3, in the penetrating direction of the second mounting through holes 31, the second mounting through holes 31 are provided with a third hole section 311 and a fourth hole section 312 which are sequentially communicated, and the third hole section 311 is far away from the axis of the second support ring 3 relative to the fourth hole section 312.
The third bore section 311 has a third inner diameter larger than a fourth inner diameter of the fourth bore section 312, and the second support ring 3 forms a third step surface 313 on the inner wall surface of the second mounting through hole 31 between the third bore section 311 and the fourth bore section 312 and facing the third bore section 311 in the radial direction due to the inner diameter difference between the third bore section 311 and the fourth bore section 312. The second mounting through hole 31 is provided in a stepped shape for mounting the second polycrystalline diamond compact 4.
The second polycrystalline diamond compact 4 comprises a second hard alloy matrix layer 401 and a second polycrystalline diamond layer 402, and the second polycrystalline diamond compact 4 is formed by sintering diamond micro powder and a hard alloy substrate under the condition of ultrahigh pressure and high temperature. In the axial direction of the second polycrystalline diamond compact 4, the second cemented carbide base layer 401 includes a third extension 411 and a fourth extension 412 which are connected in series, the outer diameter of the third extension 411 is larger than that of the fourth extension 412, the third extension 411 has a third extension end portion which is far from the fourth extension 412, the second polycrystalline diamond layer 402 is located on the third extension end portion, and the second polycrystalline diamond layer 402 has the above-mentioned second working surface 403 which faces away from the third extension 411. The fourth extension section 412 has a fourth extension end 404 remote from the third extension section 411, the fourth extension end 404 being intended to be welded with the second support ring 3.
In addition, since the third extension 411 and the fourth extension 412 have an outer diameter difference, the third extension 411 and the fourth extension 412 are connected in a stepped manner, and a fourth step surface 413 facing in the axial direction of the second cemented carbide base layer 401 is formed on the third extension 411 having a larger outer diameter.
The inlet of the second mounting through hole 31 is located on the outer circumferential surface 302 of the second support ring 3. The second polycrystalline diamond compact is inserted into the second mounting through hole 31 from the outer periphery of the second support ring 3 along the radial direction of the second support ring 3, the third extension segment 411 is inserted into the third hole segment 311, the fourth extension segment 412 is inserted into the fourth hole segment 312, the third step surface 313 and the fourth step surface 413 are in limit fit with each other in the radial direction of the second support ring 3, the second working surface 403 protrudes out of the outer peripheral surface 302 of the second support ring 3, the fourth extension end 404 reaches the inner peripheral surface 301 of the second support ring 3, and the welding device welds the second support ring 3 and the fourth extension end 404 from the inner periphery of the second support ring 3 in the radial direction.
Referring to fig. 4 and 5, fig. 4 is a schematic structural view of a first embodiment of the PDC bearing welding positioning tool of the present invention. FIG. 5 is a schematic diagram of the PDC bearing outer ring assembly of the present invention mated with a first embodiment of a PDC bearing weld locator tool. The present invention also provides a method of manufacturing a PDC bearing, the method of manufacturing including a method of manufacturing a PDC bearing outer ring assembly 1001, the method of manufacturing the PDC bearing outer ring assembly 1001 including: first, all the first polycrystalline diamond compacts 2 are mounted in the first mounting through holes 11 from the inner periphery of the first support ring 1, then the PDC bearing outer ring assembly 1001 is positioned by using a positioning tool, and finally the first support ring 1 and the second extension end portion 204 are welded from the outer periphery of the first support ring 1.
The positioning tool is the PDC bearing welding positioning tool 5 (shown in fig. 4) provided by the present invention, and the PDC bearing welding positioning tool is explained below. The PDC bearing welding positioning tool is annular, the PDC bearing welding positioning tool 5 includes a first positioning portion 51, a second positioning portion 52, and a third positioning portion 53, which are sequentially arranged along an axial direction and are connected in a step shape, an outer diameter of the first outer circumferential positioning surface 501 is smaller than an outer diameter of the second outer circumferential positioning surface 502, and an outer diameter of the second outer circumferential positioning surface 502 is smaller than an outer diameter of an outer circumferential surface of the third positioning portion 53.
The outer peripheral surface of the first positioning portion 51 is a first outer peripheral positioning surface 501, the first outer peripheral positioning surface 501 is a complete circumferential surface, the outer peripheral surface of the second positioning portion 52 is a second outer peripheral positioning surface 502, the second outer peripheral positioning surface 502 is a complete circumferential surface, the third positioning portion 53 is formed with a first axial positioning surface 503, and the first axial positioning surface 503 faces the outer periphery of the second positioning portion 52. The first positioning portion 51 is provided with a first guiding inclined surface 591 at an axial end far from the second positioning portion 52, and the second positioning portion 52 is provided with a second guiding inclined surface 592 at an axial end far from the third positioning portion 53.
In the manufacturing method of the PDC bearing outer ring assembly 1001, when the PDC bearing outer ring assembly 1001 is positioned by using the PDC bearing welding and positioning tool 5, after a plurality of first polycrystalline diamond compact pieces 2 are inserted into the mounting holes in the inner periphery of the first support ring 1, the PDC bearing welding and positioning tool is placed in the inner periphery of the PDC bearing outer ring assembly 1001 and reaches an accurate position, the first outer peripheral positioning surface 501 is in contact fit with the first working surface 203 of the first polycrystalline diamond compact piece 2, the second outer peripheral positioning surface 502 is in contact fit with the inner peripheral surface 101 of the first support ring 1, and the first axial positioning surface 503 is used for being in contact fit with the axial end surface 103 of the first support ring 1, so that effective positioning of all the first polycrystalline diamond compact pieces 2 on the first support ring 1 and the first support ring 1 is realized.
Because the welding point between first polycrystalline diamond compact 2 and the first support ring 1 changes the periphery of first support ring 1 into, goes on in the periphery of first support ring 1 when welding, so can not influence each other between welding tool and the positioning tool, and can accomplish after a plurality of first polycrystalline diamond compact 2's welding once fixes a position, consequently effectively reduces the welding degree of difficulty, improves production efficiency.
Referring to fig. 6 and 7, fig. 6 is a schematic structural view of a second embodiment of the PDC bearing welding and positioning tool of the present invention, and fig. 7 is a schematic matching view of an embodiment of the inner ring assembly of the PDC bearing of the present invention and the second embodiment of the PDC bearing welding and positioning tool. The method of manufacturing the PDC bearing also includes a method of manufacturing the PDC bearing inner ring assembly 1002, the method of manufacturing the PDC bearing inner ring assembly 1002 being similar to the method of manufacturing the PDC bearing outer ring assembly 1001 (shown in fig. 5). The method of manufacturing the PDC bearing inner ring assembly 1002 includes: firstly, mounting a second polycrystalline diamond compact 4 in the second mounting through hole 31; then, the second support ring 3 and all the second polycrystalline diamond compacts 4 on the second support ring 3 are positioned from the outer periphery of the second support ring 3 by using the PDC bearing welding positioning tool 6 (shown in fig. 6), and then the second support ring 3 and the fourth extended end portions 404 of the second polycrystalline diamond compacts 4 are welded from the inner periphery of the second support ring 3 by using the welding device.
The PDC bearing welding positioning tool 6 is annular, the PDC bearing welding positioning tool 6 includes a fourth positioning portion 61, a fifth positioning portion 62, and a sixth positioning portion 63 which are sequentially arranged along the axial direction and sequentially connected in a step shape, the inner diameter of the first inner peripheral positioning surface 601 is larger than the inner diameter of the second inner peripheral positioning surface 602, and the inner diameter of the second inner peripheral positioning surface 602 is larger than the inner diameter of the inner peripheral surface of the sixth positioning portion 63.
The inner peripheral surface of the fourth positioning portion 61 is a first inner peripheral positioning surface 601, the inner peripheral surface of the fifth positioning portion 62 is a second inner peripheral positioning surface 602, and the first inner peripheral positioning surface 601 and the second inner peripheral positioning surface 602 are complete circumferential surfaces; the sixth positioning portion 63 has a second axial positioning surface 603 formed thereon, the second axial positioning surface 603 facing the inner periphery of the fifth positioning portion 62. In the axial direction, a third guide inclined surface 691 is provided on an axial end of the fourth positioning portion 61, which is far from the fifth positioning portion 62, and a fourth guide inclined surface 692 is provided on an axial end of the fifth positioning portion 62, which is far from the sixth positioning portion 63.
In the manufacturing method of the PDC bearing inner ring assembly 1002, when the PDC bearing welding and positioning tool 6 is used to position the PDC bearing inner ring assembly 1002, after a plurality of second polycrystalline diamond compacts 4 are inserted into mounting holes on the outer periphery of the second support ring 3, the PDC bearing welding and positioning tool 6 is sleeved on the outer periphery of the PDC bearing inner ring assembly 1002 and reaches an accurate position, the first inner peripheral positioning surface 601 is in contact fit with the second working surface 403 of the second polycrystalline diamond compact 4, the second inner peripheral positioning surface 602 is in contact fit with the outer peripheral surface 302 of the second support ring 3, and the second axial positioning surface 603 is in contact fit with the axial end surface 203 of the second support ring 3, so that all the second polycrystalline diamond compacts 4 on the second support ring 3 and the second support ring 3 are effectively positioned.
Because the welding point between the second poly-crystal diamond composite sheet 4 and the second support ring 3 is changed into the periphery of the second support ring 3, the welding is carried out at the inner periphery of the second support ring 3 during welding, so that the welding tool and the positioning tool cannot be influenced mutually, and the welding of a plurality of second poly-crystal diamond composite sheets 4 can be completed after one-time positioning, thereby effectively reducing the welding difficulty, improving the production efficiency and improving the product quality.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the invention are possible to those skilled in the art, without departing from the spirit and scope of the invention.

Claims (10)

  1. The PDC bearing outer ring assembly comprises a first support ring and a plurality of first polycrystalline diamond compacts fixed on the first support ring, wherein each first polycrystalline diamond compact comprises a first hard alloy matrix layer and a first polycrystalline diamond layer;
    the method is characterized in that:
    the first support ring is provided with a plurality of first mounting through holes which penetrate through the first support ring along the radial direction of the first support ring, the first mounting through holes are provided with a first hole section and a second hole section which are sequentially communicated in the penetrating direction of the first mounting through holes, the first inner diameter of the first hole section is larger than the second inner diameter of the second hole section, and the first hole section is close to the axis of the first support ring relative to the second hole section;
    in the axial direction of the first polycrystalline diamond compact, the first hard alloy substrate layer comprises a first extension section and a second extension section which are connected in sequence, the outer diameter of the first extension section is larger than that of the second extension section, the first extension section is provided with a first extension end part far away from the second extension section, the second extension section is provided with a second extension end part far away from the first extension section, the first polycrystalline diamond layer is positioned on the first extension end part, and a first working surface facing away from the first extension section is arranged on the first polycrystalline diamond layer;
    the first extension section is inserted into the first hole section, the second extension section is inserted into the second hole section, the first working surface protrudes from the inner periphery of the first support ring, and the second extension end is welded with the first support ring.
  2. 2. The PDC bearing outer ring assembly of claim 1, wherein:
    the first supporting ring forms a first step surface between the first hole section and the second hole section, the first hard alloy base body layer forms a second step surface between the first extending section and the second extending section, and the first step surface and the second step surface are mutually abutted in the radial direction of the first supporting ring.
  3. 3. The PDC bearing outer ring assembly of claim 1 or 2, wherein:
    the first working surface is an inward concave arc surface, and the first working surfaces on the first polycrystalline diamond compacts are located on the same circumferential surface.
  4. The PDC bearing inner ring assembly comprises a second support ring and a plurality of second polycrystalline diamond compacts fixed on the second support ring, wherein the second polycrystalline diamond compacts comprise a second hard alloy matrix layer and a second polycrystalline diamond layer;
    the method is characterized in that:
    the second support ring is provided with a plurality of second mounting through holes which penetrate through the second support ring along the radial direction of the second support ring, in the penetrating direction of the second mounting through holes, the second mounting through holes are provided with a third hole section and a fourth hole section which are sequentially communicated, the third inner diameter of the third hole section is larger than the fourth inner diameter of the fourth hole section, and the third hole section is far away from the axis of the second support ring relative to the fourth hole section;
    in the axial direction of the second polycrystalline diamond compact, the second hard alloy base layer comprises a third extension section and a fourth extension section which are connected in sequence, the outer diameter of the third extension section is larger than that of the fourth extension section, the third extension section is provided with a third extension end far away from the fourth extension section, the fourth extension section is provided with a fourth extension end far away from the third extension section, the second polycrystalline diamond layer is positioned on the third extension end, and a second working surface facing away from the third extension section is arranged on the second polycrystalline diamond layer;
    the third extending section is inserted into the third hole section, the fourth extending section is inserted into the fourth hole section, the second working surface is protruded out of the periphery of the second support ring, and the fourth extending end is welded with the second support ring.
  5. 5. The PDC bearing inner ring assembly of claim 4, wherein:
    the second support ring forms a third step surface between the third hole section and the fourth hole section, the second cemented carbide base layer forms a fourth step surface between the third extending section and the fourth extending section, and the third step surface and the fourth step surface are mutually abutted in the radial direction of the second support ring.
  6. 6. The PDC bearing inner ring assembly of claim 4 or 5, wherein:
    the second working surface is an outer convex cambered surface, and the plurality of second working surfaces on the second polycrystalline diamond compact are positioned on the same circumferential surface.
  7. The PDC bearing comprises a PDC bearing outer ring assembly and a PDC bearing inner ring assembly, and the PDC bearing inner ring assembly is positioned on the inner periphery of the PDC bearing outer ring assembly;
    the method is characterized in that:
    the PDC bearing outer ring assembly is the PDC bearing outer ring assembly of any one of the preceding claims 1 to 3;
    the PDC bearing inner ring assembly is the PDC bearing inner ring assembly of any one of the preceding claims 4 to 6;
    the first working surface cooperates with the second working surface.
  8. A method of manufacturing a PDC bearing outer ring assembly, comprising:
    the manufacturing method is used for manufacturing the PDC bearing outer ring assembly of any one of the above claims 1 to 3;
    the manufacturing method comprises the following steps:
    mounting the first polycrystalline diamond compact within the first mounting through-hole from an inner periphery of the first support ring;
    welding the first support ring and the second extension end portion from an outer periphery of the first support ring.
  9. 9. The manufacturing method according to claim 8, characterized in that:
    after the step of installing first polycrystalline diamond compact in the first installation through-hole, it is right to first support ring with the second extends the step that the tip carries out the welding from the periphery of first support ring, still include:
    and positioning the PDC bearing outer ring assembly by using a positioning tool, wherein the positioning tool is matched with the first working surface, the inner peripheral surface of the first support ring and the axial end surface of the first support ring.
  10. A method of manufacturing an inner ring assembly for a PDC bearing, comprising:
    the manufacturing method is used for manufacturing the PDC bearing inner ring assembly of any one of the above claims 4 to 6;
    the manufacturing method comprises the following steps:
    mounting the second polycrystalline diamond compact within the second mounting through-hole from the outer periphery of the second support ring;
    welding the second support ring with the fourth extended end from an inner circumference of the second support ring.
CN202010753077.1A 2020-07-30 2020-07-30 PDC bearing outer ring assembly and manufacturing method thereof, PDC bearing inner ring assembly and manufacturing method thereof and PDC bearing Pending CN111894984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010753077.1A CN111894984A (en) 2020-07-30 2020-07-30 PDC bearing outer ring assembly and manufacturing method thereof, PDC bearing inner ring assembly and manufacturing method thereof and PDC bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010753077.1A CN111894984A (en) 2020-07-30 2020-07-30 PDC bearing outer ring assembly and manufacturing method thereof, PDC bearing inner ring assembly and manufacturing method thereof and PDC bearing

Publications (1)

Publication Number Publication Date
CN111894984A true CN111894984A (en) 2020-11-06

Family

ID=73182690

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010753077.1A Pending CN111894984A (en) 2020-07-30 2020-07-30 PDC bearing outer ring assembly and manufacturing method thereof, PDC bearing inner ring assembly and manufacturing method thereof and PDC bearing

Country Status (1)

Country Link
CN (1) CN111894984A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112855033A (en) * 2021-03-02 2021-05-28 广东钜鑫新材料科技股份有限公司 Polycrystalline diamond compact, manufacturing method thereof, PDC bearing assembly and cutting tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002103218A (en) * 2000-10-02 2002-04-09 Seiko Instruments Inc Center apparatus and working machine using the same
CN101871320A (en) * 2010-05-26 2010-10-27 中国地质大学（武汉） Automatic hydraulic offset-correcting method for horizontal drilling and specific drilling tool
CN110748555A (en) * 2019-10-21 2020-02-04 梅木精密工业(珠海)有限公司 Diamond end thrust bearing and manufacturing process thereof
CN210633597U (en) * 2019-06-12 2020-05-29 成都岷江精密刀具有限公司 Novel polycrystalline diamond thrust bearing and screwing tool
CN212360505U (en) * 2020-07-30 2021-01-15 广东钜鑫新材料科技股份有限公司 PDC bearing outer ring assembly, PDC bearing inner ring assembly and PDC bearing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002103218A (en) * 2000-10-02 2002-04-09 Seiko Instruments Inc Center apparatus and working machine using the same
CN101871320A (en) * 2010-05-26 2010-10-27 中国地质大学（武汉） Automatic hydraulic offset-correcting method for horizontal drilling and specific drilling tool
CN210633597U (en) * 2019-06-12 2020-05-29 成都岷江精密刀具有限公司 Novel polycrystalline diamond thrust bearing and screwing tool
CN110748555A (en) * 2019-10-21 2020-02-04 梅木精密工业(珠海)有限公司 Diamond end thrust bearing and manufacturing process thereof
CN212360505U (en) * 2020-07-30 2021-01-15 广东钜鑫新材料科技股份有限公司 PDC bearing outer ring assembly, PDC bearing inner ring assembly and PDC bearing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112855033A (en) * 2021-03-02 2021-05-28 广东钜鑫新材料科技股份有限公司 Polycrystalline diamond compact, manufacturing method thereof, PDC bearing assembly and cutting tool

Similar Documents

Publication Publication Date Title
EP3327243B1 (en) Superhard bearing elements and bearing apparatuses including same
CN102069109A (en) Correction device and correction method for inner ring of engine crankcase
US10279396B2 (en) Machining toolholder
CH703005B1 (en) A bearing assembly, the bearing apparatus, motor unit and its remittance method to new bearing assembly.
CN212360505U (en) PDC bearing outer ring assembly, PDC bearing inner ring assembly and PDC bearing
CN111894984A (en) PDC bearing outer ring assembly and manufacturing method thereof, PDC bearing inner ring assembly and manufacturing method thereof and PDC bearing
CN111702394A (en) Self-adaptive alignment clamping device suitable for butt welding processing of pipe barrel parts
JP4681008B2 (en) Permanent magnet generator rotor for gas turbine, manufacturing method thereof, gas turbine and manufacturing method thereof
CN106257075A (en) For the magnetic devices making the mandrel of rotation element pivot in watch and clock movement
CN213560739U (en) PDC bearing welding positioning tool
CN113172319B (en) Welding assembly and welding test method for welding test of axle tube and axle housing
CN101012937A (en) Manufacture of a combustion chamber
CN112828616A (en) Positioning and supporting clamp for thin-wall long-cylinder type part and using method thereof
CN212945510U (en) Eccentric inner ring needle roller bearing
CN111331219A (en) Brazing positioning device for cantilever blade structural member
CN112621164B (en) Press fitting method, valve core assembly and electronic expansion valve
CN105108266A (en) Compound positioning device for high-temperature alloy brazing
US5924798A (en) Hydrodynamic bearing apparatus and method for manufacturing thereof
CN211615437U (en) Bearing bush mounting tool of camshaft
CN207840189U (en) Double expander clamp for thin-walled part
CN113172441A (en) Sheet part turning clamp structure with deflection and using method thereof
CN107120285A (en) The assembly method of compressor and its spring bearing
CN101737475B (en) Insertion clamp apparatus, straightening apparatus and straightening method
CN111997530B (en) Artificial diamond hard alloy composite sheet
CN117697688A (en) Tool and method for mounting a bearing to a non-circular shaft section of a spindle

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination