CN209850667U - High-precision ball socket grinding rod - Google Patents
High-precision ball socket grinding rod Download PDFInfo
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- CN209850667U CN209850667U CN201822106331.XU CN201822106331U CN209850667U CN 209850667 U CN209850667 U CN 209850667U CN 201822106331 U CN201822106331 U CN 201822106331U CN 209850667 U CN209850667 U CN 209850667U
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- grinding
- ball socket
- grinding rod
- rod
- ball
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Abstract
The utility model relates to a can store high accuracy ball socket grinding rod of grinding paste. The part to be ground and the grinding rod are fixed by a three-jaw chuck and an electric hand drill respectively, and the part ball socket and the grinding rod generate relative motion by using a machine tool spindle to grind. The cross-shaped flower grooves on the ball head are used for automatically storing and releasing the grinding paste, so that the grinding efficiency is improved. The scraps and heat generated by grinding are continuously discharged along the flower grooves, and the surface roughness and the machining precision of the ball socket can be effectively improved.
Description
Technical Field
The utility model relates to a high accuracy grinding rod suitable for accurate plunger ball socket grinds belongs to the machining and grinds technical field.
Background
The plunger ball socket is a key part of the hydraulic motor, realizes the output of mechanical energy through hydraulic conversion, and is widely applied to the industries of aerospace, engineering machinery, petrochemical industry and the like. The form and position accuracy and the surface quality of the plunger ball socket directly influence the output pressure and determine the service life of the hydraulic device. Therefore, the machining precision of the plunger ball socket is highly required, the dimensional precision of the plunger ball socket is required to be Sci 9.5+ 0.0050, and the surface roughness reaches more than Ra0.4. Grinding is commonly used in manufacturing to ensure the dimensional accuracy, shape accuracy and surface roughness of the ball socket. At present, methods of changing grinding pressure, changing abrasive grain size and abrasive concentration and the like are mostly adopted to improve grinding effect and improve surface roughness, and there are few reports on high-precision spherical grinding rods. The grinding rod commonly used at present has the following two characteristics: the grinding part is a ball head with a smooth surface, grinding paste cannot be stored, and the grinding paste needs to be added periodically, so that the grinding efficiency is reduced; in the grinding process, grinding heat generated by the friction between the ball socket and the ball head is not easy to release, the temperature is increased, the thermal deformation of parts is caused, and the processing precision is reduced.
Disclosure of Invention
The utility model aims at avoiding the ball pointed end to produce because unevenness and grind the mar and cause the secondary damage to the part.
The utility model provides a solution is to provide a grinding rod that can be applicable to the grinding of high accuracy plunger ball socket. A high-precision ball socket grinding rod comprises a ball head, a flower groove and a shaft rod, wherein the ball head is arranged at the end of the shaft rod, and the flower groove is concavely arranged on the surface of the ball head. The flower grooves can be preferably arranged on the surface of the ball head in a cross shape, and the flower grooves are centrosymmetric. The material of the grinding rod is cast iron QT 400.
Compared with the prior art, the utility model, have following advantage:
1. the open type cross-shaped flower grooves can store grinding paste, so that the grinding paste is automatically filled into the grinding surface, the adverse effect of point contact is reduced, the grinding area is increased, and the grinding efficiency is improved.
The open structure of the cross-shaped flower grooves accelerates the free flow of the grinding paste on the grinding surface, so that the grinding paste is uniformly covered on the grinding surface, and errors caused by uneven adding amount when the grinding paste is manually added are reduced.
The cross-shaped flower grooves are beneficial to heat dissipation in the grinding process, the thermal deformation of parts is reduced, and the machining precision of the surfaces of the ball sockets is improved.
4. The structure is simple, and the manufacturing cost is low; the use method is simple, has low requirements on operators, and can obviously improve the grinding efficiency and the grinding precision.
Drawings
FIG. 1 is a schematic view of a grinding rod according to the present invention;
FIG. 2 is a schematic diagram of the grinding principle of a plunger ball socket;
in the figure, 1 is a ball head with a concave flower groove, 2 is a grinding rod, and 3 is a plunger ball socket part needing grinding.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
In order to facilitate the understanding of the present invention for the skilled person, the following description is made in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural view of the grinding rod of the present invention, wherein one end of the grinding rod is a ball head with a cross-shaped flower groove (part 1), and the flower groove is concavely arranged on the surface of the ball head. The width of the flower groove is 0.5mm, the depth is 0.5mm, by adopting the structural design, the grinding paste in the ball socket can be automatically stored and released, and chips and heat generated by grinding are continuously discharged along the flower groove, so that high-precision grinding is ensured.
In the actual grinding process, a grinding rod is used according to the principle shown in fig. 2. During grinding, the grinding rod and the plunger ball socket are in clearance fit as shown in the figure. The grinding rod rotates in the ball socket in an inclined mode, the rotating angle ranges from 0 degrees to 40 degrees, and full-size range of the plunger ball socket can be fully contacted and ground.
Firstly fixing the plunger ball socket 3 in figure 2 on a three-jaw chuck of a machine tool, and coating a layer of A grinding paste, wherein the main component of the A grinding paste is Cr2O3The micro powder has a particle size of 20 μm.
One end of the ball head of the grinding rod 1 is coated with a layer of grinding paste A, and one end of the shaft-shaped rod of the grinding rod is clamped by an electric hand drill. As shown in fig. 2, the hand-held electric hand drill clamps one end of the shaft rod of the grinding rod, and pushes the ball head end with the cross-shaped groove of the grinding rod in the plunger ball socket. And starting the machine tool to rotate the main shaft of the plunger ball socket random machine tool at the rotating speed of 180 revolutions per minute. Structurally, the plunger ball socket and the grinding rod are in clearance fit and generate relative motion.
Cleaning the plunger seat and the grinding rod by kerosene, cleaning the grinding paste A, and uniformly coating the grinding paste B on the plunger ball socket area and the grinding rod ball head area, wherein the main component of the grinding paste B is Cr2O3The micro powder has a particle size of 3 μm. And (3) as described in the steps (1) and (2), starting the machine tool again, and enabling the main shaft of the plunger ball socket random machine tool to rotate, wherein the rotating speed is set to be 300 r/min. Structurally, the plunger ball socket and the grinding rod are in clearance fit and generate relative motion. The grinding rod in the embodiment can be used for processing ball sockets with the surface roughness Ra0.4 or more, and meets the design requirements.
Because the grinding process belongs to precision machining, absolute cleanness in the grinding and cleaning process is required to be ensured in order to obtain the ball socket with high precision and high surface roughness.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses any simple modification, change and equivalent structure change to doing above embodiment all still belong to the utility model discloses in technical scheme's the protection scope.
Claims (3)
1. The utility model provides a high accuracy ball socket grinding rod, includes bulb, flower groove, axostylus axostyle, its characterized in that: the ball head is arranged at the end part of the shaft rod, and the flower groove is arranged on the surface of the ball head in a concave mode.
2. The high precision ball and socket grinding rod according to claim 1, wherein: the flower grooves are arranged on the surface of the ball head in a cross shape, and the flower grooves are centrosymmetric.
3. The high precision ball and socket grinding rod according to claim 1, wherein: the material of the grinding rod is cast iron QT 400.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822106331.XU CN209850667U (en) | 2018-12-14 | 2018-12-14 | High-precision ball socket grinding rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822106331.XU CN209850667U (en) | 2018-12-14 | 2018-12-14 | High-precision ball socket grinding rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209850667U true CN209850667U (en) | 2019-12-27 |
Family
ID=68928810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822106331.XU Active CN209850667U (en) | 2018-12-14 | 2018-12-14 | High-precision ball socket grinding rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209850667U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115091357A (en) * | 2022-07-20 | 2022-09-23 | 湖南西爱斯流体控制设备有限公司 | Grinding tool, grinding assembly and grinding machine |
| CN118046310A (en) * | 2024-04-16 | 2024-05-17 | 成都航利航空科技有限责任公司 | Grinding device for fuel nozzle oil way joint of engine |
-
2018
- 2018-12-14 CN CN201822106331.XU patent/CN209850667U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115091357A (en) * | 2022-07-20 | 2022-09-23 | 湖南西爱斯流体控制设备有限公司 | Grinding tool, grinding assembly and grinding machine |
| CN118046310A (en) * | 2024-04-16 | 2024-05-17 | 成都航利航空科技有限责任公司 | Grinding device for fuel nozzle oil way joint of engine |
| CN118046310B (en) * | 2024-04-16 | 2024-08-13 | 成都航利航空科技有限责任公司 | Grinding device for fuel nozzle oil way joint of engine |
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