Chamfering clamp for oil pump gear

Abstract

The utility model discloses an oil pump gear chamfering clamp which comprises a base, a supporting frame is fixedly connected to the base, an inner connecting disc is fixedly connected to the upper end of the supporting frame, an outer rotating disc is installed on the outer wall of the inner connecting disc in a rotating mode, and a connecting rod is fixedly connected to the outer rotating disc. A second air cylinder is fixedly connected to the position, located in the center of the supporting frame, of the upper face of the base, a rotary assembly base is rotationally installed at the upper end of the second air cylinder, an installation groove is formed in the rotary assembly base, and a first through hole is formed in the installation groove and is in sliding fit with the connecting rod. The rotary assembly seat can be driven to move upwards by starting the second air cylinder, the rotary assembly seat moves upwards to drive the fixed clamping piece to move upwards, and therefore the distance between the fixed clamping piece and the movable clamping piece is shortened, the oil pump gear is clamped and fixed, and the second air cylinder is adopted to drive the fixed clamping piece to move upwards to clamp the oil pump gear. The oil pump gear can be integrally clamped and installed at a time, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a chamfering fixture, in particular to an oil pump gear chamfering fixture. Background Art

[0002] A gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport liquid or increase its pressure. The gear is the core part of the gear pump. In order to prevent the sharp corners of the gear tooth end face from cracking when the gears are meshing, the gear chamfering process needs to be performed. This processing step usually requires a special fixture to assist in fixing the gear.

[0003] For example, a Chinese patent publication with publication number CN218192978U is a fixture for finishing and chamfering the outer circle of an oil pump gear, comprising a fixed base; a rotating assembly base is installed at the left end of the top of the fixed base, an active dial is installed at the right end of the top of the fixed base, and the rotating assembly base is connected to the active dial, a transmission pulley is provided on the top of the active dial, and the transmission pulley is connected to the motor through a transmission belt; four movable clamping parts and four nuts are installed on the top of the rotating assembly base; when the four oil pump gears are respectively mounted on the outside of the assembly vertical rod, the movable clamping parts are driven by the nuts to move downward along the guide slide grooves, so that the movable clamping parts are clamped on the top of the oil pump gears, which has the effect of clamping and fixing the four oil pump gears, ensuring the stability of the oil pump gear chamfering processing, and applying reverse thrust to the nut through the spring, increasing the friction resistance between the threaded connection, having the effect of limiting the nut, and preventing the nut from loosening.

[0004] Some problems were found during the use of the above-mentioned existing oil pump gear external circle finishing chamfering fixture. First, a nut is used to press down the movable clamping part, and the installation and disassembly require manual rotation of the nut, and the operator needs to perform a large number of mechanical tightening operations. Secondly, although a spring is provided on the nut to prevent the nut from loosening, it is difficult to ensure that the nut is tightened to a suitable torque when the nut is tightened manually. Utility Model Content

[0005] The utility model aims to provide an oil pump gear chamfering fixture to solve the existing problems raised in the above background technology.

[0006] The cam is provided with a plurality of inner plates, and the outer plates are provided with a plurality of outer plates, and the outer plates are rotatably mounted on the cam.

[0007] Preferably, a side support plate is fixedly connected to the base at a position near one side edge, a first cylinder is fixedly connected to one side of the side support plate, and a fixing block is fixedly connected to an output end of the first cylinder.

[0008] Preferably, a stepper motor is fixedly connected to the base, and a driving gear is fixedly connected to the output end of the stepper motor.

[0009] Preferably, a positioning block is fixedly connected under the outer rotating disk, and the positioning block cooperates with the fixing block. A driven gear is fixedly connected under the outer rotating disk and close to the inner side, and the driven gear cooperates with the driving gear.

[0010] Preferably, the outer walls on both sides of the connecting rod are provided with limit sliding grooves, the movable clamping member is provided with a connecting sliding groove, the inner wall of the connecting sliding groove is fixedly connected with a limit strip, and the limit strip is slidably matched with the limit sliding groove.

[0011] Preferably, fixing feet are fixedly connected to the periphery of the outer wall of the fixing clamp, fixing bolts are arranged in the fixing feet, and a second through hole is opened in the fixing clamp, and the second through hole is slidably matched with the connecting rod.

[0012] Preferably, a return spring is fixedly connected in the limiting groove, the other end of the return spring is fixedly connected to the limiting latch, and a displacement handle is fixedly connected to the limiting latch.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By starting the second cylinder, the rotating assembly seat can be driven to move upward. The upward movement of the rotating assembly seat will drive the fixed clamping part to move upward, thereby shortening the distance between the fixed clamping part and the movable clamping part, clamping the fixed oil pump gear, and using the second cylinder to drive the fixed clamping part to move upward to clamp the oil pump gear. The oil pump gear can be clamped and installed as a whole at one time, thereby improving processing efficiency.

[0015] 2. The second cylinder drives the fixed clamping part to move up and clamp the oil pump gear. Compared with the existing device, firstly, manual clamping and fixing are not required, which effectively reduces the use of manpower. Secondly, the oil pump gear is clamped and fixed once, and the clamping force between the fixed clamping part and the movable clamping part is determined by the second cylinder. There is no need to worry about the oil pump gear not being completely fixed due to human error.

[0016] 3. The fixing clamp is fixed inside the installation slot through the fixing foot and the fixing bolt. Figure 1 , Figure 3 As shown, four groups of fixed clamping parts and movable clamping parts are installed above the rotating assembly seat. The number of clamping parts is not limited to 4 groups, and the number of fixed clamping parts and movable clamping parts can be increased or decreased according to actual conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model when clamping the oil pump gear;

[0018] Figure 2 This is a cross-sectional view of the utility model when clamping the oil pump gear;

[0019] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the stepping motor, inner connecting disk, outer rotating disk and fixed block of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the rotary assembly seat of the utility model;

[0022] Figure 6 It is a schematic diagram of the structure of the fixed clamping member and the movable clamping member of the utility model;

[0023] Figure 7 For the utility model Figure 2 Enlarged view of point A in the middle;

[0024] Figure 8 For the utility model Figure 3 Enlarged view of point B in the middle.

[0025] In the figure: 1. base; 101. side support plate; 102. first cylinder; 103. fixed block; 2. stepper motor; 201. driving gear; 3. support frame; 301. inner connecting disk; 4. outer rotating disk; 401. positioning block; 402. driven gear; 5. connecting rod; 501. limiting slide groove; 502. latch fixing hole; 6. rotating assembly seat; 601. mounting groove; 602. first through hole; 603. second cylinder; 7. fixed clamping member; 701. fixing foot; 702. fixing bolt; 703. second through hole; 8. movable clamping member; 801. connecting slide groove; 802. limiting strip; 9. limiting groove; 901. return spring; 902. limiting latch; 903. displacement handle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-8 The utility model provides a technical solution: a gear chamfering fixture for an oil pump, comprising a base 1, a support frame 3 is fixedly connected to the base 1, an inner connecting disk 301 is fixedly connected to the upper end of the support frame 3, an outer rotating disk 4 is rotatably installed on the outer wall of the inner connecting disk 301, a connecting rod 5 is fixedly connected to the outer rotating disk 4, a second cylinder 603 is fixedly connected to the base 1 and located at the center of the support frame 3, a rotating assembly seat 6 is rotatably installed on the upper end of the second cylinder 603, a mounting groove 601 is provided on the rotating assembly seat 6, a first through hole 602 is provided in the mounting groove 601, the first through hole 602 is slidably matched with the connecting rod 5, a fixed clamping piece 7 is provided in the mounting groove 601, a movable clamping piece 8 is slidably installed on the connecting rod 5, a limiting groove 9 is provided on the movable clamping piece 8, a limiting latch 902 is slidably installed in the limiting groove 9, a latch fixing hole 502 is provided on the outer wall of the front and rear sides of the connecting rod 5, and the latch fixing hole 502 cooperates with the limiting latch 902.

[0028] The movable clamping part 8 is then mounted on the connecting rod 5, and the pin fixing hole 502 cooperates with the limit pin 902 to fix the movable clamping part 8 on the connecting rod 5. Starting the second cylinder 603 can drive the rotating assembly seat 6 to move upward, and the upward movement of the rotating assembly seat 6 will drive the fixed clamping part 7 to move upward, thereby shortening the distance between the fixed clamping part 7 and the movable clamping part 8, clamping the fixed oil pump gear, and using the second cylinder 603 to drive the fixed clamping part 7 to move upward to clamp the oil pump gear, the oil pump gear can be clamped and installed as a whole at one time, thereby improving the processing efficiency. The second cylinder 603 is rotatably connected to the rotating assembly seat 6, so that rotating the outer rotating disk 4 can drive the connecting rod 5 to rotate, and the rotation of the connecting rod 5 can drive the rotating assembly seat 6 to rotate synchronously. The rotating assembly seat 6 and the connecting rod 5 can drive the clamped and fixed oil pump gear to rotate, thereby realizing the rotation replacement of the oil pump gear and replacing the oil pump gear in the processing position.

[0029] Among them, in order to achieve the purpose of rotating the outer rotating disk 4 to drive the oil pump gear to move and replace the oil pump gear in the processing position, the present device adopts the following technical scheme: a side support plate 101 is fixedly connected to the base 1 and close to one side edge, a first cylinder 102 is fixedly connected to one side of the side support plate 101, and a fixed block 103 is fixedly connected to the output end of the first cylinder 102; a stepper motor 2 is fixedly connected to the base 1, and a driving gear 201 is fixedly connected to the output end of the stepper motor 2; a positioning block 401 is fixedly connected to the bottom of the outer rotating disk 4, and the positioning block 401 and the fixed block 103 cooperate with each other; a driven gear 402 is fixedly connected to the bottom of the outer rotating disk 4 and close to the inner side, and the driven gear 402 and the driving gear 201 cooperate with each other.

[0030] By starting the stepper motor 2, the driving gear 201 can be driven to rotate, and the rotation of the driving gear 201 can drive the outer rotating disk 4 to rotate. Through PLC control, the outer rotating disk 4 can be accurately rotated, so that the rotation of the outer rotating disk 4 can drive the positioning block 401 to align with the fixed block 103. Starting the first cylinder 102 can drive the fixed block 103 to move. The movement of the fixed block 103 will be inserted into the positioning block 401, thereby limiting the rotation of the outer rotating disk 4 and avoiding rotation when machining the oil pump gear.

[0031] Among them, in order to achieve the purpose of fixing the movable clamping member 8, the present device is implemented by adopting the following technical scheme: limiting slide grooves 501 are provided on the outer walls on both sides of the connecting rod 5, a connecting slide groove 801 is provided in the movable clamping member 8, the inner wall of the connecting slide groove 801 is fixedly connected to a limiting strip 802, the limiting strip 802 is slidably matched with the limiting slide groove 501, fixed feet 701 are fixedly connected to the outer wall of the fixed clamping member 7, a fixing bolt 702 is provided in the fixed foot 701, a second through hole 703 is provided in the fixed clamping member 7, the second through hole 703 is slidably matched with the connecting rod 5, a return spring 901 is fixedly connected in the limiting groove 9, the other end of the return spring 901 is fixedly connected to the limiting latch 902, and a displacement handle 903 is fixedly connected to the limiting latch 902.

[0032] The limit bar 802 is slidably matched with the limit slide groove 501 to limit the position of the movable clamping member 8 on the connecting rod 5, so that the movable clamping member 8 slides on the connecting rod 5. Since the return spring 901 provides thrust for the limit latch 902, when the limit latch 902 passes through the limit bar 802, it will automatically insert into the limit bar 802 to fix the movable clamping member 8 on the connecting rod 5. The fixed clamping member 7 is fixed in the installation groove 601 by the fixed foot 701 and the fixed bolt 702. Figure 1 , Figure 3 As shown, four groups of fixed clamping members 7 and movable clamping members 8 are installed above the rotating assembly seat 6, and 6 mounting grooves 601 are drawn in the figure, so the number of clamping members is not limited to 4 groups, and the number of fixed clamping members 7 and movable clamping members 8 can be increased or decreased according to actual conditions, and the second through hole 703 enables the connecting rod 5 to pass through the interior of the fixed clamping member 7.

[0033] The working principle and use process of the utility model are as follows: when in use, the device needs to be placed in a suitable position, and the oil pump gear to be processed is sleeved on the connecting rod 5, so that the connecting rod 5 is placed on the fixed clamping piece 7, and then the movable clamping piece 8 is sleeved on the connecting rod 5, and the latch fixing hole 502 cooperates with the limit latch 902 to fix the movable clamping piece 8 on the connecting rod 5, and starting the second cylinder 603 can drive the rotating assembly seat 6 to move up, and the upward movement of the rotating assembly seat 6 will drive the fixed clamping piece 7 to move up, thereby shortening the distance between the fixed clamping piece 7 and the movable clamping piece 8, clamping the fixed oil pump gear, and then starting the stepping motor 2 to drive the active gear 201 to rotate, and the active gear The rotation of 201 can drive the outer rotating disk 4 to rotate. The rotation of the outer rotating disk 4 will drive the rotating assembly seat 6 to rotate through the connecting rod 5. The rotation of the rotating assembly seat 6 and the connecting rod 5 can drive the fixed clamping part 7, the movable clamping part 8 and the clamped oil pump gear to rotate, and replace the oil pump gear in the processing position. After rotating to the specified position, the stepper motor 2 stops, and finally the first cylinder 102 is started to insert the fixed block 103 into the positioning block 401 to limit the rotation of the outer rotating disk 4. After the oil pump gear in the processing position is processed, the first cylinder 102 is started to reset with the fixed block 103 to release the restriction on the outer rotating disk 4, and the stepper motor 2 is started again to repeat the above operations.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear chamfering fixture for an oil pump, comprising a base (1), characterized in that: A support frame (3) is fixedly connected to the base (1), an inner connecting disk (301) is fixedly connected to the upper end of the support frame (3), an outer rotating disk (4) is rotatably mounted on the outer wall of the inner connecting disk (301), a connecting rod (5) is fixedly connected to the outer rotating disk (4), a second cylinder (603) is fixedly connected to the base (1) and located at the center of the support frame (3), a rotating assembly seat (6) is rotatably mounted on the upper end of the second cylinder (603), a mounting groove (601) is provided on the rotating assembly seat (6), and the mounting groove (601) A first through hole (602) is provided inside, and the first through hole (602) is slidably matched with the connecting rod (5). A fixed clamping piece (7) is provided in the installation groove (601), and a movable clamping piece (8) is slidably installed on the connecting rod (5). A limiting groove (9) is provided on the movable clamping piece (8), and a limiting latch (902) is slidably installed in the limiting groove (9). The outer walls of the front and rear surfaces of the connecting rod (5) are provided with latch fixing holes (502), and the latch fixing holes (502) and the limiting latch (902) cooperate with each other.

2. The oil pump gear chamfering fixture according to claim 1, characterized in that: A side support plate (101) is fixedly connected to the base (1) at a position close to one side edge, a first cylinder (102) is fixedly connected to one side of the side support plate (101), and a fixing block (103) is fixedly connected to the output end of the first cylinder (102).

3. The oil pump gear chamfering fixture according to claim 2, characterized in that: A stepper motor (2) is fixedly connected to the base (1), and a driving gear (201) is fixedly connected to the output end of the stepper motor (2).

4. The oil pump gear chamfering fixture according to claim 3, characterized in that: A positioning block (401) is fixedly connected below the outer rotating disk (4), and the positioning block (401) cooperates with the fixing block (103). A driven gear (402) is fixedly connected below the outer rotating disk (4) and close to the inner side, and the driven gear (402) cooperates with the driving gear (201).

5. The oil pump gear chamfering fixture according to claim 1, characterized in that: The outer walls of both sides of the connecting rod (5) are provided with limit sliding grooves (501), the movable clamping member (8) is provided with a connecting sliding groove (801), the inner wall of the connecting sliding groove (801) is fixedly connected with a limit strip (802), and the limit strip (802) is slidably matched with the limit sliding groove (501).

6. The oil pump gear chamfering fixture according to claim 1, characterized in that: The outer wall of the fixing clamp (7) is fixedly connected with fixing feet (701) all around, and fixing bolts (702) are arranged inside the fixing feet (701). A second through hole (703) is opened inside the fixing clamp (7), and the second through hole (703) is slidably matched with the connecting rod (5).

7. The oil pump gear chamfering fixture according to claim 1, characterized in that: A return spring (901) is fixedly connected in the limiting groove (9), and the other end of the return spring (901) is fixedly connected to the limiting latch (902), and a displacement handle (903) is fixedly connected to the limiting latch (902).

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