CN214291986U

CN214291986U - Clamping tool capable of being used for machining multiple crankshafts

Info

Publication number: CN214291986U
Application number: CN202023249515.5U
Authority: CN
Inventors: 刘伟
Original assignee: Ningbo Jianshi Machinery Co ltd
Current assignee: Ningbo Jianshi Machinery Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-28
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a clamping tool for processing a plurality of crankshafts, which comprises a base, wherein a first supporting plate and a second supporting plate are arranged on the base side by side, the first supporting plate is connected with a first turntable in a rotating way, and the second supporting plate is connected with a second turntable which is coaxial with the first turntable in a rotating way; an intermediate substrate is fixedly arranged between the first rotary table and the second rotary table, and a plurality of crankshaft fixing devices are arranged on the intermediate substrate; this press from both sides tight frock that can be used for a plurality of bent axles to process is simple structure not only, can once only process a plurality of bent axles moreover, and can realize the tight fixed of clamp of bent axle fast.

Description

Clamping tool capable of being used for machining multiple crankshafts

Technical Field

The utility model relates to a bent axle processing technology field specifically indicates a press from both sides tight frock that can be used for a plurality of bent axle processing.

Background

The crankshaft is the main rotating mechanism of the engine, which is responsible for converting the up-and-down reciprocating motion of the piston into the circular motion of the crankshaft, and the rotating speed of the engine is the rotating speed of the crankshaft. The crankshaft shown in fig. 1 includes a short shaft 001, a crank throw 002 and a long shaft 003, one end of the crank throw is fixedly connected with one end of the long shaft, the other end of the crank throw is fixedly connected with one end of the short shaft, and the short shaft and the long shaft are parallel to each other. With the expansion of the application range of the crankshafts, some crankshafts need to punch holes on the circumferential side surface of a long shaft, and additionally, a groove is cut at one end, far away from a crank throw, of the long shaft, so that although some special punching and cutting clamps are arranged in the prior art, the rotation angle of the punching hole relative to the crank throw cannot be adjusted according to the requirements; it is troublesome to be operated even if it can be adjusted; in addition, the traditional crankshaft clamping tool can only clamp one crankshaft for machining once, so that the crankshaft needs to be frequently assembled and disassembled by operators, the labor of the operators is greatly increased, and the machining efficiency of the crankshaft is reduced.

Disclosure of Invention

Technical problem to be solved

The utility model aims at providing a press from both sides tight frock that can be used for a plurality of bent axle processing is simple structure not only, can once only process a plurality of bent axles moreover, and can realize the tight fixedly of clamp of bent axle fast.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a clamping tool capable of being used for machining a plurality of crankshafts comprises a base, wherein a first supporting plate and a second supporting plate are arranged on the base side by side, a first rotary table is rotatably connected to the first supporting plate, and a second rotary table which is coaxial with the first rotary table is rotatably connected to the second supporting plate; an intermediate base plate is fixedly installed between the first rotary plate and the second rotary plate, a plurality of crankshaft fixing devices are arranged on the intermediate base plate, each crankshaft fixing device comprises a pressing block, a first supporting block and a second supporting block, the first supporting block and the second supporting block are arranged on the intermediate base plate side by side and used for placing a long shaft, a plurality of guide slide rods are arranged between the first supporting block and the second supporting block on the intermediate base plate, and the pressing blocks are connected to the guide slide rods in a sliding mode; the pressing block is provided with a plurality of connecting pressing plates for pressing the long shaft on the first supporting block and the second supporting block; a plurality of compression bolts penetrating through the compression blocks are connected to the middle substrate between the first support block and the second support block in a threaded manner, and compression springs for forcing the compression blocks to drive the connecting pressing plate to move towards the middle substrate are sleeved on the compression bolts; a first cylinder for driving the pressing block to drive the connecting pressing plate to move towards the direction far away from the middle substrate is arranged on the lower end face of the middle substrate; and a short shaft clamping mechanism is arranged on the middle base plate and close to the first supporting block.

According to the technical scheme, when the clamping tool capable of being used for machining the plurality of crankshafts is used, the first rotary table and the second rotary table are used for controlling the middle substrate to rotate to the position where the crankshafts can be conveniently installed, then the crankshaft is fixed in each crankshaft fixing device on the middle substrate, and after the crankshafts are fixed, the first rotary table and the second rotary table are used for controlling the middle substrate to rotate to the horizontal position so as to conveniently punch and cut the long shafts of the crankshafts; when the crankshaft fixing device works, the first cylinder is controlled to extend out to push the pressing block to compress the pressing spring upwards, then the long shaft of the crankshaft is placed on the first supporting block and the second supporting block, the short shaft of the crankshaft is located at the first supporting block, the short shaft of the crankshaft is fixed through the short shaft clamping mechanism, meanwhile, the first cylinder is controlled to contract, and the pressing block drives the connecting pressing plate to press the long shaft of the crankshaft on the first supporting block and the second supporting block under the action of the first cylinder and the pressing spring, so that the crankshaft is fixed; when the crankshaft needs to be taken out, the middle base plate is controlled to rotate to a position where the crankshaft is convenient to take out through the first rotary table and the second rotary table, then the crankshaft fixing device works, the short shaft clamping mechanism loosens the short shaft of the crankshaft, and meanwhile, the first air cylinder extends out to push the pressing block to compress the pressing spring upwards, so that the connecting pressing plate does not press the long shaft of the crankshaft any more, and the crankshaft is convenient to take down; the crankshaft clamping tool is simple in structure, can process a plurality of crankshafts at one time, and can quickly clamp and fix the crankshafts.

In a further technical scheme, the short shaft clamping mechanism comprises a top rod, a connecting rod, a hinge seat, a pressing rod and a supporting block, wherein the top rod is connected to the middle substrate in a sliding mode along the length direction of the sliding guide rod, the supporting block is installed on the middle substrate and is close to the first supporting block, the hinge seat is installed on the middle substrate and is located between the top rod and the supporting block, one end of the connecting rod is hinged to the hinge seat, and the other end of the connecting rod is hinged to a rod body of the pressing rod; one end of the pressing rod is hinged with the ejector rod, and the other end of the pressing rod is positioned above the supporting block and used for pressing the short shaft on the supporting block; and a second cylinder for driving the ejector rod to reciprocate is mounted on the lower end face of the middle base plate.

Through the technical scheme, when the short shaft clamping mechanism works, the second cylinder stretches out to drive the ejector rod to move upwards, the ejector rod drives one end of the pressing rod to move upwards, the other end of the pressing rod presses the short shaft on the supporting block under the action of the connecting rod, so that the short shaft is fixed, when the short shaft needs to be loosened, the second cylinder shrinks to drive one section of the pressing rod to move downwards through the ejector rod, and then the other end of the pressing rod upwards loosens the short shaft under the action of the connecting rod.

The ejector rod, the hinge base and the supporting block are arranged on the same straight line perpendicular to the long shaft.

In a further technical scheme, a differential head for adjusting the height of the supporting block extending out of the upper end face of the middle substrate is arranged on the lower end face of the middle substrate; the height of the supporting block extending out of the upper end face of the middle substrate is adjusted through the rotary differential head, so that the height of the short shaft after being compressed and fixed is adjusted, the rotation of the long shaft can be realized after the short shaft is compressed and fixed and the height is adjusted, and the angle of the long shaft for punching the crank throw is adjusted.

In a further technical scheme, the number of the connecting pressing plates is two and the two connecting pressing plates are respectively close to the first supporting block and the second supporting block; and the connecting pressing plates are provided with pressing holes for the long shaft to pass through or pressing grooves with openings at the upper ends.

In a further technical scheme, a placing groove for placing the long shaft is formed in the first supporting block, and a through hole for placing the long shaft is formed in the second supporting block.

(III) advantageous effects

Compared with the prior art, the technical scheme of the utility model have following advantage: when the clamping tool capable of being used for machining the plurality of crankshafts is used, firstly, the first rotary table and the second rotary table control the middle substrate to rotate to a position where the crankshafts can be conveniently installed, then, one crankshaft is fixed in each crankshaft fixing device on the middle substrate, and after the crankshafts are fixed, the first rotary table and the second rotary table control the middle substrate to rotate to a horizontal position so as to conveniently punch and cut the long axis of the crankshaft; when the crankshaft fixing device works, the first cylinder is controlled to extend out to push the pressing block to compress the pressing spring upwards, then the long shaft of the crankshaft is placed on the first supporting block and the second supporting block, the short shaft of the crankshaft is located at the first supporting block, the short shaft of the crankshaft is fixed through the short shaft clamping mechanism, meanwhile, the first cylinder is controlled to contract, and the pressing block drives the connecting pressing plate to press the long shaft of the crankshaft on the first supporting block and the second supporting block under the action of the first cylinder and the pressing spring, so that the crankshaft is fixed; when the crankshaft needs to be taken out, the middle base plate is controlled to rotate to a position where the crankshaft is convenient to take out through the first rotary table and the second rotary table, then the crankshaft fixing device works, the short shaft clamping mechanism loosens the short shaft of the crankshaft, and meanwhile, the first air cylinder extends out to push the pressing block to compress the pressing spring upwards, so that the connecting pressing plate does not press the long shaft of the crankshaft any more, and the crankshaft is convenient to take down; the crankshaft clamping tool is simple in structure, can process a plurality of crankshafts at one time, and can quickly clamp and fix the crankshafts.

Drawings

FIG. 1 is a schematic sectional view of a crankshaft of the present invention;

FIG. 2 is a perspective view of the present invention

FIG. 3 is a perspective view of the present invention with a partial structure

Fig. 4-6 are perspective views of the crankshaft fixing device of the present invention;

fig. 7 is an exploded view of the crankshaft fixing device of the present invention;

fig. 8-9 are perspective views of the crankshaft fixing device of the present invention clamping the crankshaft.

Detailed Description

Referring to fig. 1 to 9, a clamping tool for processing a plurality of crankshafts includes a base 20, a first support plate 21 and a second support plate 22 are mounted on the base 20 side by side through bolts, the first support plate 21 is rotatably connected with a first rotary table 23, and the second support plate 22 is rotatably connected with a second rotary table 24 coaxially disposed with the first rotary table 23; a first fixing block 25 is mounted on the end face, far away from the first supporting plate 21, of the first rotary table 23 through bolts, and a second fixing block 26 is mounted on the end face, far away from the second supporting plate 22, of the second rotary table 24 through bolts; an intermediate base plate 1 is fixedly installed between the first fixing block 25 and the second fixing block 26 through bolts, six crankshaft fixing devices are arranged on the intermediate base plate 1, each crankshaft fixing device comprises a pressing block 2, and a first supporting block 3 and a second supporting block 4 which are arranged on the intermediate base plate 1 side by side and used for placing the long shaft 003, a placing groove 5a used for placing the long shaft 003 is formed in the first supporting block 3, and a through hole 5b used for placing the long shaft 003 is formed in the second supporting block 4; four guide slide bars 6 are arranged between the first supporting block 3 and the second supporting block 4 on the middle substrate 1, and the pressing block 2 is connected to the four guide slide bars 6 in a sliding manner; the pressing block 2 is provided with two connecting pressing plates 7 for pressing the long shaft 003 on the first supporting block 3 and the second supporting block 4; the number of the connecting pressing plates 7 is two and the two connecting pressing plates are respectively close to the first supporting block 3 and the second supporting block 4; and the connecting pressing plates 7 are respectively provided with a pressing hole for the long shaft 003 to pass through or a pressing groove 8 with an opening at the upper end. Four compression bolts 9 penetrating through the compression block 2 are connected to the middle base plate 1 between the first support block 3 and the second support block 4 in a threaded manner, compression springs 10 for forcing the compression block 2 to drive the connecting pressure plate 7 to move towards the middle base plate 1 are sleeved on the compression bolts 9, and the pretightening force of the compression springs 10 can be adjusted by adjusting the distance that the compression bolts 9 are screwed into or out of the middle base plate 1; a first air cylinder 11 for driving the pressing block 2 to drive the connecting pressing plate 7 to move towards the direction far away from the middle substrate 1 is arranged on the lower end face of the middle substrate 1; and a short shaft 001 clamping mechanism is arranged on the middle base plate 1 and close to the first supporting block 3.

The short shaft 001 clamping mechanism comprises a push rod 12, a connecting rod 13, a hinge seat 14, a pressing rod 15 and a supporting block 16, wherein the push rod 12 is connected to the middle substrate 1 in a sliding mode along the length direction of the guide sliding rod 6, the supporting block 16 is installed on the middle substrate 1 and is close to the first supporting block 3, the hinge seat 14 is installed on the middle substrate 1 and is located between the push rod 12 and the supporting block 16, and the push rod 12, the hinge seat 14 and the supporting block 16 are located on the same straight line perpendicular to the long shaft 003. One end of the connecting rod 13 is hinged on the hinged seat 14, and the other end is hinged on the rod body of the pressing rod 15; one end of the pressing rod 15 is hinged with the top rod 12, and the other end of the pressing rod is positioned above the supporting block 16 and used for pressing the short shaft 001 on the supporting block 16; and a second cylinder 17 for driving the ejector rod 12 to reciprocate is mounted on the lower end surface of the middle base plate 1.

A differential head 18 for adjusting the height of the supporting block 16 extending out of the upper end face of the intermediate substrate 1 is arranged on the lower end face of the intermediate substrate 1 through a differential head locking block; through rotatory minute head 18 adjust the supporting shoe 16 and stretch out the height of the up end of intermediate baseplate 1, and then adjust the minor axis 001 and compress tightly the height after fixing, minor axis 001 compresses tightly can realize the rotation of major axis 003 after fixing altitude mixture control, and then adjusts the angle that the major axis 003 punches for crank 002.

When the clamping tool capable of being used for machining a plurality of crankshafts is used, firstly, the first rotary table 23 and the second rotary table 24 control the middle substrate 1 to rotate to a position convenient for installing the crankshafts, then, a crankshaft is fixed in each crankshaft fixing device on the middle substrate 1, and after the crankshafts are fixed, the first rotary table 23 and the second rotary table 24 control the middle substrate 1 to rotate to a horizontal position so as to punch and cut the long shafts 003 of the crankshafts; when the crankshaft fixing device works, the first cylinder 11 is controlled to extend out to push the pressing block 2 to compress the pressing spring 10 upwards, then the long shaft 003 of the crankshaft is placed in the placing groove 5a on the first supporting block 3 and the through hole 5b on the second supporting block 4, and meanwhile, the long shaft 003 of the crankshaft penetrates through the pressing hole or the pressing groove 8 on the connecting pressing plate 7; the short shaft 001 of the crankshaft is positioned on the supporting block 16, then the first cylinder 11 is controlled to contract, and the pressing block 2 drives the connecting pressing plate 7 to press the long shaft 003 of the crankshaft onto the first supporting block 3 and the second supporting block 4 under the action of the first cylinder 11 and the pressing spring 10 so as to fix the long shaft 003 of the crankshaft; meanwhile, the second air cylinder 17 is controlled to extend out to drive the ejector rod 12 to move upwards, the ejector rod 12 drives one end of the pressing rod 15 to move upwards, and the other end of the pressing rod 15 presses the short shaft 001 on the supporting block 16 under the action of the connecting rod 13, so that the short shaft 001 is fixed.

When the crankshaft needs to be taken out, the middle base plate is controlled to rotate to a position where the crankshaft is convenient to take out through the first rotary table and the second rotary table, then the crankshaft fixing device works, the first air cylinder 11 is controlled to extend out to push the pressing block 2 to upwards compress the pressing spring 10, and therefore the pressing hole or the pressing groove 8 in the connecting pressing plate 7 does not press the long shaft 003 of the crankshaft any more; meanwhile, the second cylinder 17 is controlled to contract to drive one section of the pressing rod 15 to move downwards through the ejector rod 12, so that the other end of the pressing rod 15 upwards loosens the short shaft 001 under the action of the connecting rod 13, and therefore an operator can take down the crankshaft conveniently. The crankshaft clamping tool is simple in structure, can process a plurality of crankshafts at one time, and can quickly clamp and fix the crankshafts.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The clamping tool capable of being used for machining a plurality of crankshafts is characterized by comprising a base, wherein a first supporting plate and a second supporting plate are arranged on the base side by side, the first supporting plate is rotatably connected with a first rotary table, and the second supporting plate is rotatably connected with a second rotary table which is coaxial with the first rotary table; an intermediate base plate is fixedly installed between the first rotary plate and the second rotary plate, a plurality of crankshaft fixing devices are arranged on the intermediate base plate, each crankshaft fixing device comprises a pressing block, a first supporting block and a second supporting block, the first supporting block and the second supporting block are arranged on the intermediate base plate side by side and used for placing a long shaft, a plurality of guide slide rods are arranged between the first supporting block and the second supporting block on the intermediate base plate, and the pressing blocks are connected to the guide slide rods in a sliding mode; the pressing block is provided with a plurality of connecting pressing plates for pressing the long shaft on the first supporting block and the second supporting block; a plurality of compression bolts penetrating through the compression blocks are connected to the middle substrate between the first support block and the second support block in a threaded manner, and compression springs for forcing the compression blocks to drive the connecting pressing plate to move towards the middle substrate are sleeved on the compression bolts; a first cylinder for driving the pressing block to drive the connecting pressing plate to move towards the direction far away from the middle substrate is arranged on the lower end face of the middle substrate; and a short shaft clamping mechanism is arranged on the middle base plate and close to the first supporting block.

2. The clamping tool capable of being used for machining a plurality of crankshafts according to claim 1, wherein the short shaft clamping mechanism comprises a top rod, a connecting rod, a hinge seat, a pressing rod and a supporting block, the top rod is connected to the middle base plate in a sliding mode along the length direction of the guide sliding rod, the supporting block is installed on the middle base plate and is close to the first supporting block, the hinge seat is installed on the middle base plate and is located between the top rod and the supporting block, one end of the connecting rod is hinged to the hinge seat, and the other end of the connecting rod is hinged to a rod body of the pressing rod; one end of the pressing rod is hinged with the ejector rod, and the other end of the pressing rod is positioned above the supporting block and used for pressing the short shaft on the supporting block; and a second cylinder for driving the ejector rod to reciprocate is mounted on the lower end face of the middle base plate.

3. The clamping tool capable of being used for machining a plurality of crankshafts according to claim 2, wherein a differential head for adjusting the height of the supporting block extending out of the upper end face of the intermediate base plate is mounted on the lower end face of the intermediate base plate.

4. The clamping tool capable of being used for machining a plurality of crankshafts according to claim 1, wherein the number of the connecting pressing plates is two and the two connecting pressing plates are respectively close to the first supporting block and the second supporting block; and the connecting pressing plates are provided with pressing holes for the long shaft to pass through or pressing grooves with openings at the upper ends.

5. The clamping tool capable of being used for machining the crankshafts according to claim 1, wherein the first supporting block is provided with a placing groove for placing the long shaft, and the second supporting block is provided with a through hole for placing the long shaft.