Automobile camshaft fixture

Abstract

The present invention discloses an automobile camshaft clamp, comprising a guide rail, wherein two guide blocks are symmetrically and slidably mounted on the outer surface of the guide rail, a fixed clamp block is fixedly mounted on the upper surface of the guide block, a support frame is fixedly mounted on the outer surface of the guide block, a dynamic clamp block is slidably mounted on the inner wall of the support frame, an electric telescopic rod is fixedly mounted on the top of the support frame, the telescopic end of the electric telescopic rod passes through the top of the support frame and is fixedly mounted on the upper surface of the dynamic clamp block, a support block is slidably mounted on the outer surface of the guide block, and a blowing hole is penetrated and opened on the outer surface of the support block on the side close to the fixed clamp block. When clamping the camshaft, the present invention places the end of the camshaft on the support block first, connects the air intake pipe to the external blowing pipe, and allows the external blowing pipe to purge the clamping opening of the fixed clamp block through the blowing hole to remove impurities such as iron filings on the surface of the fixed clamp block, thereby preventing the iron filings and other impurities from affecting the stability of the camshaft clamping.

Description

Technical Field

[0001] The present invention relates to the technical field of clamps, in particular to an automobile camshaft clamp. Background Art

[0002] The camshaft is a component in a piston engine. Its function is to control the opening and closing of the valves. Because the movement of the valves is closely related to the power and operating characteristics of an engine, camshaft design plays a crucial role in the engine design process. Before use, the camshaft requires machining, and this machining requires the use of a fixture.

[0003] In the patent with publication number CN213081202U, a fixture for manufacturing automobile camshafts is proposed, including a base, two groups of fixed blocks are symmetrically arranged at both ends of the upper end surface of the base, the upper end surfaces of the two groups of fixed blocks are symmetrically arranged with two groups of arc-shaped clamping blocks, one end of the lower end surface of the arc-shaped clamping block is provided with a connecting rod, the bottom of the connecting rod is inserted into the fixed block and slidably connected to the fixed block, the bottom of the fixed block is provided with a mounting cavity, a rotating shaft is provided in the mounting cavity along the horizontal direction, the two ends of the rotating shaft are rotatably connected to the side walls of the mounting cavity, a cam is fixed in the middle of the rotating shaft, and the bottom of the connecting rod is located in the mounting cavity. The bottom is provided with a horizontal rod between the bottoms of the two groups of connecting rods, and the two ends of the horizontal rod are respectively rotatably connected to the two groups of connecting rods, and the side wall of the cam fits the upper end surface of the horizontal rod, and the bottom spherical pair of the horizontal rod is connected to the limit rod, and the bottom of the limit rod is vertically slidably connected to the bottom of the mounting cavity, and a spring is sleeved on the outside of the limit rod, the top of the spring is fixed to the bottom of the horizontal rod, and the bottom end of the spring is fixed to the bottom of the mounting cavity. A handle is provided on the side wall of the fixed block, one end of the handle passes through the fixed block and is axially fixed to one end of the rotating shaft, and the other end of the handle is hinged with a hydraulic arm, and the fixed end of the hydraulic arm is rotatably connected to the side wall of the fixed block.

[0004] In the above patents, impurities such as iron filings generated during camshaft machining are likely to fall onto the fixing block. If the camshaft is clamped without cleaning the fixing block, the iron filings are likely to cushion the camshaft, affecting the stability of the camshaft clamping. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that impurities such as iron filings generated during camshaft machining are easily dropped onto the fixed block. When the camshaft is clamped without cleaning the fixed block, the iron filings are easily used to cushion the camshaft, thereby affecting the stability of the camshaft clamping.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The top of the support frame is fixedly mounted with an electric telescopic rod, the telescopic end of the electric telescopic rod passes through the top of the support frame and is fixedly mounted on the upper surface of the dynamic clamping block. The outer surface of the guide block is slidably mounted with a support block, and the outer surface of the support block is provided with a blowing hole. The outer surface of the support block is fixedly mounted with an air intake pipe on the other side of the support block, and the air intake pipe is connected to the blowing hole. An adjusting mechanism is provided between the guide rail and the two guide blocks, and a supporting mechanism supporting the support block is installed on the outer surface of the guide block, and a limiting mechanism is provided between the support frame and the support block.

[0008] As a further solution of the present invention, the adjustment mechanism includes two fixed plates symmetrically fixedly installed at the two end portions of the guide rail, and a bidirectional screw is rotatably installed between the two fixed plates. The two ends of the bidirectional screw respectively pass through the outer surfaces of the two guide blocks and are threadedly connected thereto. A drive motor is fixedly installed on the outer surface of one of the fixed plates, and the output end of the drive motor passes through the outer surface of the fixed plate and is fixedly installed to one end of the bidirectional screw.

[0009] As a further solution of the present invention, the support mechanism includes a support plate fixedly mounted on the outer surface of the guide block, two support rods fixedly mounted on the lower surface of the support block, the bottom ends of the two support rods pass through the outer surface of the support plate and are slidably mounted therewith, a limiting ring is fixedly mounted on the bottom end of the support rod, and a support spring is sleeved on the outer surface of the support rod, and the support spring is arranged between the lower surface of the support block and the upper surface of the support plate.

[0010] As a further solution of the present invention, the limiting mechanism includes two L-shaped plates symmetrically fixedly installed on the outer surfaces of the opposite sides of the support frame, a cross bar is inserted through the outer surface of the L-shaped plate, a clamping block is fixedly installed on the end of the cross bar close to the support block, the lower surface of the clamping block close to the side of the support block is set as an inclined surface, a retaining ring is fixedly installed on the end of the cross bar away from the clamping block, and an unlocking component is provided between the support frame and the clamping block.

[0011] As a further solution of the present invention, a compression spring is sleeved on the outer surface of the cross bar, and the compression spring is arranged between the L-shaped plate and the clamping block.

[0012] As a further solution of the present invention, the unlocking assembly includes a plurality of limit rods evenly fixedly installed on the outer surface of the support frame, and the outer surfaces of the plurality of limit rods are slidably installed with push plates, and the outer surface of the push plate close to the movable clamping block is fixedly installed with a conical block, and the end of the limit rod away from the support frame is fixedly installed with a baffle, and the upper surface of the clamping block is provided with a trapezoidal groove, and the side edge of the push plate is against the oblique side of the trapezoidal groove.

[0013] As a further solution of the present invention, a return spring is sleeved on the outer surface of the limit rod, and the return spring is arranged between the baffle and the push plate.

[0014] As a further solution of the present invention, a plurality of mounting plates are evenly and fixedly mounted on the outer surface of the guide rail.

[0015] As a further solution of the present invention, two guide rods are symmetrically fixedly installed between the fixed clamping block and the top wall of the support frame. The guide rods pass through the outer surface of the movable clamping block and are slidably installed therewith.

[0016] The beneficial effects of the present invention are:

[0017] When clamping the camshaft, place the end of the camshaft on the support block first, connect the air intake pipe and the external air blowing pipe, and allow the external air blowing pipe to blow the clamping mouth of the fixed clamping block through the air blowing hole to remove impurities such as iron filings on the surface of the fixed clamping block, so as to prevent impurities such as iron filings from affecting the stability of the camshaft clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an automobile camshaft fixture proposed by the present invention;

[0019] Figure 2 This is a side structural schematic diagram of a guide block of an automobile camshaft fixture proposed by the present invention;

[0020] Figure 3 This is a side structural schematic diagram of a guide block of an automobile camshaft fixture proposed by the present invention;

[0021] Figure 4 This is a schematic diagram of the clamping block structure of an automobile camshaft fixture proposed by the present invention;

[0022] Figure 5 This is a schematic diagram of the support block structure of an automobile camshaft fixture proposed by the present invention;

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of a guide rail of an automobile camshaft fixture proposed by the present invention;

[0024] Figure 7 for Figure 2 A magnified view of the structure in the middle.

[0025] In the figure: 1. Guide rail; 2. Guide block; 3. Fixed clamping block; 4. Dynamic clamping block; 5. Support frame; 6. Guide rod; 7. Electric telescopic rod; 8. Fixed plate; 9. Bidirectional screw; 10. Drive motor; 11. Support plate; 12. Support rod; 13. Support block; 14. Limiting ring; 15. Support spring; 16. Air inlet pipe; 17. Air blowing hole; 18. L-shaped plate; 19. Cross bar; 20. Block; 21. Retaining ring; 22. Compression spring; 23. Limiting rod; 24. Baffle; 25. Push plate; 26. Conical block; 27. Return spring; 28. Trapezoidal groove; 29. ​​Mounting plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] Refer to the attached Figure 1 -Attached Figure 7 , a car camshaft clamp comprises a guide rail 1, on the outer surface of the guide rail 1 are symmetrically slidably installed two guide blocks 2, the upper surface of the guide block 2 is fixedly installed with a fixed clamping block 3, the outer surface of the guide block 2 is fixedly installed with a support frame 5, the inner wall of the support frame 5 is slidably installed with a dynamic clamping block 4, the top of the support frame 5 is fixedly installed with an electric telescopic rod 7, the telescopic end of the electric telescopic rod 7 passes through the top of the support frame 5 and is fixedly installed on the upper surface of the dynamic clamping block 4, the outer surface of the guide block 2 is slidably installed with a support block 13, the outer surface of the support block 13 close to the fixed clamping block 3 is penetrated by a blowing hole 17, the outer surface of the other side of the support block 13 is fixedly installed with an air intake pipe 16, the air intake pipe 16 is connected to the blowing hole 17, an adjusting mechanism is provided between the guide rail 1 and the two guide blocks 2, the outer surface of the guide block 2 is installed with a supporting mechanism supporting the support block 13, and a limiting mechanism is provided between the support frame 5 and the support block 13.

[0029] In this embodiment, the adjustment mechanism includes two fixed plates 8 symmetrically fixedly installed at the two end ends of the guide rail 1, and a bidirectional screw rod 9 is rotatably installed between the two fixed plates 8. The two ends of the bidirectional screw rod 9 respectively pass through the outer surfaces of the two guide blocks 2 and are threadedly connected thereto. A drive motor 10 is fixedly installed on the outer surface of one of the fixed plates 8, and the output end of the drive motor 10 passes through the outer surface of the fixed plate 8 and is fixedly installed to one end of the bidirectional screw rod 9.

[0030] When in use, the bidirectional screw rod 9 is driven to rotate by the driving motor 10, so that the bidirectional screw rod 9 can drive the guide block 2 with threaded connection at both ends to move on the guide rail 1, so as to facilitate the clamping and fixing of camshafts of different lengths.

[0031] In this embodiment, the support mechanism includes a support plate 11 fixedly mounted on the outer surface of the guide block 2, and two support rods 12 are fixedly mounted on the lower surface of the support block 13. The bottom ends of the two support rods 12 pass through the outer surface of the support plate 11 and are slidably mounted therewith. A limiting ring 14 is fixedly mounted on the bottom end of the support rod 12, and a support spring 15 is sleeved on the outer surface of the support rod 12. The support spring 15 is arranged between the lower surface of the support block 13 and the upper surface of the support plate 11. The elastic force of the support spring 15 is relatively large, and can provide a certain support for the weight of the camshaft.

[0032] In this embodiment, the limiting mechanism includes two L-shaped plates 18 symmetrically fixedly mounted on the outer surfaces of the opposite sides of the support frame 5. A cross bar 19 is inserted through the outer surface of the L-shaped plate 18. A clamping block 20 is fixedly mounted on the end of the cross bar 19 close to the support block 13. The lower surface of the clamping block 20 close to the side of the support block 13 is set as an inclined surface. A retaining ring 21 is fixedly mounted on the end of the cross bar 19 away from the clamping block 20, and an unlocking component is provided between the support frame 5 and the clamping block 20.

[0033] In this embodiment, a compression spring 22 is sleeved on the outer surface of the cross bar 19 . The compression spring 22 is disposed between the L-shaped plate 18 and the clamping block 20 . The compression spring 22 is used to push the clamping block 20 to reset.

[0034] In this embodiment, the unlocking assembly includes a plurality of limit rods 23 uniformly fixedly mounted on the outer surface of the support frame 5, a push plate 25 is slidably mounted on the outer surface of the plurality of limit rods 23, a conical block 26 is fixedly mounted on the outer surface of the push plate 25 close to the movable clamping block 4, a baffle 24 is fixedly mounted on the end of the limit rod 23 away from the support frame 5, a trapezoidal groove 28 is provided on the upper surface of the clamping block 20, and the side of the push plate 25 is against the oblique side of the trapezoidal groove 28.

[0035] When the movable clamping block 4 moves down to the conical block 26, the movable clamping block 4 will push the push plate 25 toward the clamping block 20 through the conical block 26, so that the push plate 25 pushes the clamping block 20 toward the L-shaped plate 18 through the inclined surface of the trapezoidal groove 28, so that the clamping block 20 unlocks the support block 13, and the support block 13 is pressed downward under the action of the gravity of the camshaft, so that the fixed clamping block 3 and the movable clamping block 4 clamp and fix the end of the camshaft.

[0036] In this embodiment, a return spring 27 is sleeved on the outer surface of the limiting rod 23 . The return spring 27 is disposed between the baffle 24 and the push plate 25 . The return spring 27 is used to push the push plate 25 to return to its original position.

[0037] In this embodiment, a plurality of mounting plates 29 are evenly and fixedly mounted on the outer surface of the guide rail 1 , and the mounting plates 29 facilitate the installation of the guide rail 1 and the machine tool.

[0038] In this embodiment, two guide rods 6 are symmetrically fixedly installed between the fixed clamping block 3 and the top wall of the support frame 5. The guide rods 6 pass through the outer surface of the movable clamping block 4 and are slidably installed with it. The two guide rods 6 are used to limit the movable clamping block 4, so that the movable clamping block 4 is more stable when moving.

[0039] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: when clamping the camshaft, the end of the camshaft is first placed on the support block 13, and the connection between the air intake pipe 16 and the external air blowing pipe is connected, so that the external air blowing pipe blows the clamping opening of the fixed clamping block 3 through the air blowing hole 17 to remove impurities such as iron filings on the surface of the fixed clamping block 3, thereby preventing the iron filings and other impurities from affecting the stability of the camshaft clamping;

[0040] After the fixed clamping block 3 is purged, the electric telescopic rod 7 drives the dynamic clamping block 4 to move downward, so that the dynamic clamping block 4 and the fixed clamping block 3 can clamp and fix the end of the camshaft. When the dynamic clamping block 4 moves down to the conical block 26, the dynamic clamping block 4 will push the push plate 25 in the direction of the card block 20 through the conical block 26, so that the push plate 25 pushes the card block 20 in the direction of the L-shaped plate 18 through the inclined surface of the trapezoidal groove 28, so that the card block 20 unlocks the support block 13, so that the support block 13 is pressed downward under the action of the gravity of the camshaft, so that the fixed clamping block 3 and the dynamic clamping block 4 can clamp and fix the end of the camshaft.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0042] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An automobile camshaft fixture, comprising a guide rail (1), characterized in that: Two guide blocks (2) are symmetrically and slidably mounted on the outer surface of the guide rail (1), a fixed clamping block (3) is fixedly mounted on the upper surface of the guide block (2), a support frame (5) is fixedly mounted on the outer surface of the guide block (2), a dynamic clamping block (4) is slidably mounted on the inner wall of the support frame (5), an electric telescopic rod (7) is fixedly mounted on the top of the support frame (5), the telescopic end of the electric telescopic rod (7) passes through the top of the support frame (5) and is fixedly mounted on the upper surface of the dynamic clamping block (4), a support block (13) is slidably mounted on the outer surface of the guide block (2), An air blowing hole (17) is formed through the outer surface of the support block (13) on one side close to the fixed clamp block (3), an air inlet pipe (16) is fixedly mounted on the outer surface of the other side of the support block (13), and the air inlet pipe (16) is communicated with the air blowing hole (17), an adjustment mechanism is provided between the guide rail (1) and the two guide blocks (2), a support mechanism for supporting the support block (13) is mounted on the outer surface of the guide block (2), and a limiting mechanism is provided between the support frame (5) and the support block (13); the limiting mechanism includes two blocks symmetrically fixedly mounted on the outer surfaces of the support frame (5) on opposite sides. An L-shaped plate (18) is provided with a cross bar (19) inserted through the outer surface of the L-shaped plate (18), a clamping block (20) is fixedly installed on one end of the cross bar (19) close to the support block (13), and the lower surface of the clamping block (20) close to the support block (13) is provided with an inclined surface, and a retaining ring (21) is fixedly installed on one end of the cross bar (19) away from the clamping block (20), and an unlocking component is provided between the support frame (5) and the clamping block (20); a compression spring (22) is provided on the outer surface of the cross bar (19), and the compression spring (22) is provided on the L-shaped plate (1 8) and the clamping block (20); the unlocking assembly includes a plurality of limit rods (23) uniformly fixedly mounted on the outer surface of the support frame (5), the outer surfaces of the plurality of limit rods (23) are slidably mounted with push plates (25), the outer surface of the push plate (25) close to the movable clamping block (4) is fixedly mounted with a conical block (26), the end of the limit rod (23) away from the support frame (5) is fixedly mounted with a baffle (24), the upper surface of the clamping block (20) is provided with a trapezoidal groove (28), and the side of the push plate (25) is against the oblique side of the trapezoidal groove (28).

2. The automobile camshaft clamp according to claim 1, characterized in that: The adjustment mechanism comprises two fixed plates (8) symmetrically fixedly mounted on the ends of the guide rail (1), a bidirectional screw rod (9) being rotatably mounted between the two fixed plates (8), the two ends of the bidirectional screw rod (9) respectively passing through the outer surfaces of the two guide blocks (2) and being threadedly connected thereto, a drive motor (10) being fixedly mounted on the outer surface of one of the fixed plates (8), the output end of the drive motor (10) passing through the outer surface of the fixed plate (8) and being fixedly mounted to one end of the bidirectional screw rod (9).

3. The automobile camshaft clamp according to claim 1, characterized in that: The support mechanism comprises a support plate (11) fixedly mounted on the outer surface of the guide block (2); two support rods (12) are fixedly mounted on the lower surface of the support block (13); the bottom ends of the two support rods (12) pass through the outer surface of the support plate (11) and are slidably mounted therewith; a limiting ring (14) is fixedly mounted on the bottom end of the support rod (12); a support spring (15) is sleeved on the outer surface of the support rod (12); and the support spring (15) is arranged between the lower surface of the support block (13) and the upper surface of the support plate (11).

4. The automobile camshaft clamp according to claim 1, characterized in that: The outer surface of the limiting rod (23) is sleeved with a return spring (27), and the return spring (27) is arranged between the baffle (24) and the push plate (25).

5. The automobile camshaft clamp according to claim 1, characterized in that: A plurality of mounting plates (29) are evenly and fixedly mounted on the outer surface of the guide rail (1).

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