A camshaft tooling fixture

Abstract

The utility model relates to camshaft machining technical field discloses a kind of camshaft tool fixture, including processing table, and supporting seat is fixedly arranged on processing table, and rotating seat is rotatably installed on supporting seat;Clamping groove is opened in rotating seat;Multiple pressing strips are fixedly arranged on the inner wall of clamping groove;Limiting sliding block is slidably installed in clamping groove, multiple limiting sliding slots are opened in limiting sliding block, and one clamping block for clamping camshaft is slidably installed in each limiting sliding slot;Multiple clamping blocks and multiple pressing strips are one-to-one corresponding, and each pressing strip is provided with transmission inclined plane, which is abutting transmission cooperation with corresponding clamping block;Electric push rod for driving limiting sliding block to slide along the rotation central axis of supporting seat is further fixedly installed on supporting seat.The utility model realizes that four clamping blocks are synchronous clamping camshaft by electric push rod to push limiting sliding block to slide and the abutting transmission cooperation of clamping block and pressing strip, control difficulty is low, convenient to use, to improve the clamping and fixing efficiency of tool fixture to camshaft.

Description

Technical Field

[0001] This utility model relates to the field of camshaft machining technology, and in particular to a camshaft tooling fixture. Background Technology

[0002] A camshaft is an important component in a car engine. Its structure generally includes a main shaft with multiple cams at different angles. Currently, when machining a camshaft, it is necessary to first place the camshaft on a worktable and fix it with a fixture before machining.

[0003] The camshaft machining fixture described in announcement number CN222327447U includes an operating table. A vertical plate is fixedly installed on the top left end of the operating table, and a mounting plate is fixedly installed on the middle of the right end of the vertical plate. A frame is fixedly installed on the right side of the mounting plate. A drive motor is fixedly connected inside the frame through a transmission device. A fixed frame is fixedly connected to the output end of the drive motor. A camshaft is fixed inside the fixed frame. Cylinder bodies are symmetrically installed on the upper and lower parts of the fixed frame. A stop plate is fixedly connected to the cylinder body through a cylinder telescopic rod that passes through the fixed frame. The stop plate presses against the camshaft.

[0004] Based on the above technical features, the problem is that in the existing technology, it is necessary to control all cylinders to extend and retract synchronously in order to ensure uniform contact force on the camshaft. This is difficult to control and inconvenient to use, resulting in low efficiency of tooling fixtures for clamping and fixing the camshaft.

[0005] Therefore, it is necessary to solve the above problems by using a camshaft tooling fixture. Utility Model Content

[0006] The purpose of this invention is to provide a camshaft tooling fixture to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a camshaft tooling fixture, including a machining table, a support seat fixedly disposed on the machining table, and a rotating seat with a horizontal rotation axis rotatably mounted on the support seat; a clamping groove is formed at the end of the rotating seat away from the support seat along the rotation axis toward the support seat;

[0008] Multiple pressure strips parallel to the rotation axis of the support are fixedly installed on the inner wall of the clamping groove, and the multiple pressure strips are evenly distributed along the circumference of the rotation circumference of the rotating seat.

[0009] A limiting slider is slidably installed in the clamping groove. Multiple limiting grooves are opened on the limiting slider. A clamping block for clamping the camshaft is slidably installed in each limiting groove. Multiple clamping blocks correspond one-to-one with multiple pressure bars. Each pressure bar has a transmission inclined surface at the end near the support seat that abuts and drives the corresponding clamping block.

[0010] Each limiting slide groove is equipped with a reset spring for the sliding reset of the clamping block, and each reset spring is fixedly connected to the limiting slider and the clamping block in the limiting slide groove.

[0011] The support base is equipped with a drive mechanism that drives the rotating seat to rotate, and an electric push rod that drives the limiting slider to slide along the central axis of rotation of the support base is also fixedly installed on the support base.

[0012] Preferably, the drive mechanism includes a motor fixed to a support base; the support base has a meshing groove, and a rotating shaft is horizontally placed in the meshing groove, the rotating shaft being parallel to the output shaft of the motor and rotatably connected to the support base; the rotating shaft extends out of the support base and is fixedly connected to a rotating seat; an external gear ring and a gear are provided in the meshing groove; the external gear ring is fixedly sleeved on the rotating shaft, and the gear is fixedly sleeved on the output shaft of the motor; the external gear ring and the gear mesh with each other.

[0013] Preferably, the rotating shaft has an axial through hole through which an electric push rod passes, the through hole extends to the rotating seat and communicates with the clamping groove; the telescopic shaft of the electric push rod passes into the clamping groove and is rotatably connected to the limiting slider.

[0014] Preferably, the clamping block includes a connecting block and a clamping block; the connecting block is a cross block, and the limiting groove matches the cross block; the connecting block is located in the limiting groove and is in a limiting sliding fit with the limiting groove; the clamping block is fixed on the connecting block, and the return spring is fixedly connected to the connecting block.

[0015] Preferably, the clamping groove is a square groove, and the limiting slider is a square block that matches the square groove; each limiting slider has a notch at the end away from the rotation axis of the rotating seat to allow the corresponding pressure strip to make way.

[0016] The technical effects and advantages of this utility model are as follows: This utility model achieves synchronous clamping of the camshaft by using an electric push rod to push the limit slider to slide and the clamping block and pressure bar to abut and transmit. The entire process only requires controlling the electric push rod, which is easy to control and convenient to use, thereby improving the clamping and fixing efficiency of the tooling fixture for the camshaft. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the interior of the rotating seat of this utility model;

[0019] Figure 3 This is an enlarged schematic diagram of point A in this utility model;

[0020] Figure 4This is a schematic diagram of the limiting slider of this utility model.

[0021] In the diagram: 1. Processing table; 2. Support base; 3. Electric push rod; 4. Rotating seat; 5. Engaging groove; 6. Rotating shaft; 7. Pressure bar; 8. Limiting slider; 9. External gear ring; 10. Gear; 11. Motor; 12. Limiting groove; 13. Connecting block; 14. Clamping block; 15. Clamping groove; 16. Return spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Example 1: This utility model provides the following... Figures 1 to 4 The camshaft tooling fixture shown includes a machining table 1, on which a machine tool for machining camshafts is fixedly mounted. A support base 2 is fixedly mounted on the machining table 1, and a rotating seat 4 with a horizontal rotation axis is rotatably mounted on the support base 2. A drive mechanism for driving the rotating seat 4 to rotate is mounted on the support base 2.

[0024] Specifically, the drive mechanism includes a motor 11, which is fixed on a support base 2. A meshing groove 5 is provided in the support base 2, and a rotating shaft 6 is horizontally placed in the meshing groove 5. The rotating shaft 6 is parallel to the output shaft of the motor 11 and is rotatably connected to the support base 2.

[0025] The rotating shaft 6, serving as the rotation center axis of the rotating seat 4, passes through the support seat 2 and is fixedly connected to the rotating seat 4. An external gear ring 9 and a gear 10 are installed in the meshing groove 5. The external gear ring 9 is fixedly sleeved on the rotating shaft 6, and the gear 10 is fixedly sleeved on the output shaft of the motor 11. The external gear ring 9 and the gear 10 mesh together.

[0026] A clamping groove 15 is formed at the end of the rotating seat 4 away from the support seat 2 along the axial direction of the rotating shaft 6 towards the support seat 2. The clamping groove 15 is a square groove. A limiting slider 8 is slidably installed in the clamping groove 15. The limiting slider 8 is a square block that matches the square groove.

[0027] Four pressure strips 7, parallel to the rotating shaft 6, are fixedly installed on the inner wall of the clamping groove 15. Each pressure strip 7 is a long rectangular block. The four pressure strips 7 are evenly distributed along the circumference of the rotating shaft 6.

[0028] Four limiting grooves 12 are provided on the limiting slider 8 along the radial direction of the rotating shaft 6, and the four limiting grooves 12 are evenly distributed along the circumference of the rotating shaft 6.

[0029] Each limiting slide groove 12 has a clamping block for holding the camshaft installed in a limiting sliding manner, and multiple clamping blocks correspond one-to-one with multiple pressure strips 7.

[0030] Specifically, the clamping block includes a connecting block 13 and a clamping block 14. The connecting block 13 is a cross-shaped block, and the limiting groove 12 matches the cross-shaped block. The connecting block 13 is located within the limiting groove 12 and slides in a limiting manner with the limiting groove 12. The clamping block 14 is fixed to the end of the connecting block 13 away from the support base 2.

[0031] Each limiting slide groove 12 is provided with a return spring 16 for sliding reset of the clamping block along the radial direction of the rotating shaft 6. The end of each return spring 16 near the central axis of the rotating shaft 6 is fixedly connected to the limiting slider 8, and the other end of each return spring 16 is fixedly connected to the connecting block 13 in the limiting slide groove 12.

[0032] Each pressure strip 7 has a transmission inclined surface at its end near the support base 2, which abuts against the corresponding clamping block 14 for transmission engagement.

[0033] Each limiting slide 12 has a notch at its end away from the central axis of the rotating shaft 6 to allow the corresponding pressure strip 7 to make way.

[0034] An electric push rod 3 that drives the limit slider 8 to slide along the central axis of the rotating shaft 6 is fixedly installed on the support base 2.

[0035] An axial through hole is provided inside the rotating shaft 6 for the electric push rod 3 to pass through, extending to the rotating seat 4 and communicating with the clamping groove 15. The telescopic shaft of the electric push rod 3 passes into the clamping groove 15 and is rotatably connected to the limiting slider 8.

[0036] Working principle of Example 1: When using this tooling fixture to clamp and fix the camshaft, one axial end of the camshaft is inserted into the clamping groove 15 by hoisting or manually, and the axial end abuts against the limiting slider 8. Then, the electric push rod 3 is activated, and its telescopic shaft extends and pushes the limiting slider 8 to slide closer to the four pressure bars 7. The limiting slider 8 pushes the four abutting blocks 14 to move synchronously through the connecting block 13. At this time, because the four abutting blocks 14 slide against the transmission inclined surfaces on the corresponding pressure bars 7, the four abutting blocks 14 synchronously approach the camshaft and compress the corresponding return springs 16.

[0037] When the four clamping blocks 14 clamp the camshaft, the camshaft is released, the electric push rod 3 is turned off, and the motor 11 is started. At this time, the output shaft of the motor 11 drives the gear 10 to rotate, and the gear 10 drives the external gear ring 9 to rotate. The external gear ring 9 drives the rotating shaft 6 to rotate, and the rotating shaft 6 drives the rotating seat 4 to rotate. The rotating seat 4 drives the limiting slider 8 to rotate, and the limiting slider 8 drives the camshaft to rotate through the connecting block 13 and the clamping blocks 14. Thus, the shaft processing equipment on the machine tool processes the camshaft.

[0038] When the limiting slider 8 slides closer to the four pressure bars 7, it pushes the camshaft axis to move closer to the shaft processing equipment on the machine tool. In this embodiment, the four clamping blocks 14 are used to clamp and fix the camshaft with the same diameter as the circumference of the end faces of the four pressure bars 7 near the central axis of the rotating shaft 6; and when the four clamping blocks 14 slide against the end faces of the corresponding pressure bars 7 near the central axis of the rotating shaft 6, the camshaft with the same diameter as the circumference of the end faces of the four clamping blocks 14 near the central axis of the rotating shaft 6; and there is also a camshaft with a diameter between the above two diameters.

[0039] When the four abutting blocks 14 slide against the end face of the corresponding pressure strip 7 near the central axis of the rotating shaft 6, the four pressure strips 7 can penetrate the notch on the corresponding limiting groove 12. At this time, the camshaft of the corresponding diameter can move horizontally to the maximum extent.

[0040] After the camshaft machining is completed, the motor 11 is turned off and the electric push rod 3 is started. The telescopic shaft of the electric push rod 3 retracts and drives the limit slider 8 to slide back. The limit slider 8 drives the four abutment blocks 14 to slide back through the connecting block 13. When the four abutment blocks 14 slide into contact with the transmission inclined surface on the corresponding pressure strip 7 again, under the elastic force of the return spring 16, the four abutment blocks 14 disengage from the camshaft and slide back to slide into contact with the rotating seat 4.

[0041] Both motor 11 and electric push rod 3 are controlled by the control unit inside the machine tool, which is existing technology and will not be described in detail here.

[0042] Example 2: This example is a further optimization of Example 1, ensuring that all camshafts held by the four clamping blocks 14 can be moved into position on the machine tool for shaft machining. The difference lies in the horizontal guide groove on the machining table 1, and a moving block fixedly mounted at the bottom of the support base 2. The moving block is located within the guide groove and slides within it. A lead screw is rotatably mounted within the guide groove, passing through the moving block and threadedly connected to it. The lead screw can be manually driven by a handwheel or by a drive motor. The drive motor is controlled by the control unit within the machine tool, which is prior art and will not be described in detail here.

[0043] The working principle of Example 2: When the lead screw rotates, it pushes the moving block along the guide groove to move closer to the equipment on the machine tool used for shaft machining. The moving block drives the support base 2 to move closer to the equipment on the machine tool used for shaft machining. The rest of the process is the same as in Example 1, and will not be described in detail here.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A camshaft tooling fixture, comprising a machining table (1), characterized in that: A support base (2) is fixedly installed on the processing table (1), and a rotating seat (4) with a horizontal rotation axis is rotatably installed on the support base (2); a clamping groove (15) is opened at the end of the rotating seat (4) away from the support base (2) along the rotation axis toward the support base (2); Multiple pressure strips (7) parallel to the rotation axis of the support base (2) are fixedly installed on the inner wall of the clamping groove (15). The multiple pressure strips (7) are evenly distributed along the circumference of the rotation circumference of the rotating base (4). A limiting slider (8) is slidably installed in the clamping groove (15). Multiple limiting grooves (12) are opened on the limiting slider (8). A clamping block for clamping the camshaft is slidably installed in each limiting groove (12). Multiple clamping blocks correspond one-to-one with multiple pressure strips (7). Each pressure strip (7) has a transmission inclined surface at the end near the support seat (2) that abuts and drives the corresponding clamping block. Each limiting slide groove (12) is provided with a reset spring (16) for sliding reset of the clamping block. Each reset spring (16) is fixedly connected to the limiting slider (8) and the clamping block in the limiting slide groove (12). The support base (2) is equipped with a drive mechanism that drives the rotating seat (4) to rotate, and the support base (2) is also fixedly equipped with an electric push rod (3) that drives the limiting slider (8) to slide along the rotation axis of the support base (2).

2. The camshaft tooling fixture according to claim 1, characterized in that: The driving mechanism includes a motor (11) fixed on a support base (2); a meshing groove (5) is provided in the support base (2), and a rotating shaft (6) is horizontally placed in the meshing groove (5). The rotating shaft (6) is parallel to the output shaft of the motor (11) and rotatably connected to the support base (2); the rotating shaft (6) passes through the support base (2) and is fixedly connected to the rotating base (4); an external gear ring (9) and a gear (10) are provided in the meshing groove (5); the external gear ring (9) is fixedly sleeved on the rotating shaft (6), and the gear (10) is fixedly sleeved on the output shaft of the motor (11); the external gear ring (9) and the gear (10) mesh with each other.

3. A camshaft tooling fixture according to claim 2, characterized in that: The rotating shaft (6) has an axial through hole through which the electric push rod (3) passes. The through hole extends to the rotating seat (4) and communicates with the clamping groove (15). The telescopic shaft of the electric push rod (3) passes into the clamping groove (15) and is rotatably connected to the limiting slider (8).

4. A camshaft tooling fixture according to claim 1, characterized in that: The clamping block includes a connecting block (13) and a clamping block (14); the connecting block (13) is a cross block, and the limiting slide groove (12) matches the cross block; the connecting block (13) is located in the limiting slide groove (12) and is limited and slidably engaged with the limiting slide groove (12); the clamping block (14) is fixed on the connecting block (13), and the reset spring (16) is fixedly connected to the connecting block (13).

5. A camshaft tooling fixture according to claim 1, characterized in that: The clamping groove (15) is a square groove, and the limiting slider (8) is a square block that matches the square groove; each limiting slider (12) is provided with a notch at the end away from the rotation axis of the rotating seat (4) to allow the corresponding pressure strip (7) to make way.

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