Cam shaft press fitting clamp

Abstract

The utility model discloses a cam shaft press fitting clamp which comprises a base. The clamping mechanism comprises a sliding groove, sliding blocks, L-shaped rods, a first fixing plate, a groove, a second fixing plate and a driving assembly, the sliding groove is formed in the upper end of the base, the two sliding blocks are symmetrically and slidably connected to the inner wall of the sliding groove, and the two L-shaped rods are symmetrically and fixedly connected to the upper ends of the two sliding blocks; first fixing plates are fixedly connected to the side walls, close to each other, of the two L-shaped rods, a groove is formed in the side wall of each first fixing plate, two second fixing plates are symmetrically and slidably connected to the inner wall of each groove, and a driving assembly is arranged on the inner wall of each sliding groove. The two ends of the cam shaft are clamped through the first fixing plate, the side wall of the cam shaft is clamped and fixed through the second fixing plate, the cam shaft cannot move left, right, front and back, side moving and sliding are avoided in the press fitting process, and the fixing effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of camshaft processing, in particular to a camshaft press-fitting fixture. Background Art

[0002] The camshaft is a component in a piston engine. Its function is to control the opening and closing of the valves. Although the speed of the camshaft in a four-stroke engine is half that of the crankshaft, its speed is usually still very high and it needs to withstand a large torque. Therefore, the design has very high requirements on the strength and support of the camshaft. Its material is generally special cast iron, and occasionally forgings are used.

[0003] When the existing camshaft is press-fitted, the camshaft is usually fixed. The existing fixture usually uses two clamps that can be close to each other to clamp the two ends of the camshaft. Although it can have a fixing effect, the two ends of the camshaft may shift forward and backward during the press-fitting process, and the fixing effect is not ideal. Based on this, we propose a camshaft press-fitting fixture. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a camshaft press-fitting fixture.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A camshaft press-fitting fixture comprises a base;

[0007] The clamping mechanism includes a slide groove, a slider, an L-shaped rod, a first fixed plate, a groove, a second fixed plate and a driving component. A slide groove is provided at the upper end of the base, and two slides are symmetrically slidably connected to the inner wall of the slide groove. Two L-shaped rods are symmetrically fixedly connected to the upper ends of the two sliders. The side walls of the two L-shaped rods close to each other are fixedly connected to the first fixed plate, and a groove is provided on the side wall of the first fixed plate. Two second fixed plates are symmetrically slidably connected to the inner wall of the groove, and a driving component is provided on the inner wall of the slide groove.

[0008] Preferably, the driving assembly includes a first bidirectional lead screw rotatably connected to the inner wall of the slide groove, the side wall of the first bidirectional lead screw is threadedly connected to the two sliders, the side wall of the base is fixedly connected to a servo motor, and the output end of the servo motor passes through the side wall of the base and is fixedly connected to the first bidirectional lead screw.

[0009] Preferably, the driving assembly also includes a second bidirectional screw rotatably connected to the inner wall of the groove, the side wall of the second bidirectional screw is threadedly connected to two second fixed plates, one end of the second bidirectional screw passes through the side wall of the first fixed plate and is fixedly connected to a handle, and a limit assembly for limiting the rotation position of the second bidirectional screw is installed on the handle.

[0010] Preferably, the limiting assembly includes a threaded rod threadedly connected to the side wall of the handle, and the side wall of the first fixed plate is provided with a plurality of limiting grooves cooperating with the threaded rod, and the plurality of limiting grooves are symmetrically arranged along the axis of the second bidirectional screw.

[0011] Preferably, the second fixing plate is in a T shape.

[0012] Preferably, a plurality of support columns are symmetrically fixedly connected to the lower end of the base, the number of the plurality of support columns is 4, and the lower ends of the support columns are fixedly connected to the ground via expansion screws.

[0013] The utility model has the following beneficial effects:

[0014] 1. By setting a fixing mechanism, the two ends of the camshaft are clamped by the first fixing plate, and the side wall of the camshaft is clamped and fixed by the second fixing plate, so that the camshaft cannot move left and right, front and back, and will not slide sideways during press installation, and the fixing effect is better.

[0015] 2. By setting a limit assembly and rotating the threaded rod into the corresponding limit groove, the rotation position of the second bidirectional lead screw is limited to prevent the second fixed plate from moving due to the rotation of the second bidirectional lead screw, causing the clamping of the camshaft to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a camshaft press-fitting fixture proposed by the utility model;

[0017] Figure 2 for Figure 1 A top view of the structure in FIG.

[0018] Figure 3 for Figure 1 A schematic cross-sectional view of the structure;

[0019] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of the first fixed plate.

[0020] In the figure: 1 base, 2 slide groove, 3 slider, 4 L-shaped rod, 5 first fixed plate, 6 groove, 7 second fixed plate, 8 first bidirectional lead screw, 9 servo motor, 10 second bidirectional lead screw, 11 hand, 12 threaded rod, 13 limit groove, 14 support column. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 of the embodiments.

[0022] Reference Figure 1-Figure 4 , a camshaft press-fitting fixture, comprising a base 1;

[0023] The clamping mechanism includes a slide groove 2, a slider 3, an L-shaped rod 4, a first fixed plate 5, a groove 6, a second fixed plate 7 and a driving component. A slide groove 2 is provided at the upper end of the base 1. Two slide blocks 3 are symmetrically slidably connected to the inner wall of the slide groove 2. Two L-shaped rods 4 are symmetrically fixedly connected to the upper ends of the two sliders 3. The side walls of the two L-shaped rods 4 close to each other are fixedly connected to the first fixed plate 5. A groove 6 is provided on the side wall of the first fixed plate 5. Two second fixed plates 7 are symmetrically slidably connected to the inner wall of the groove 6. The second fixed plate 7 is T-shaped. A driving component is provided on the inner wall of the slide groove 2.

[0024] It should be noted that the diameter of the camshaft is greater than the width of the groove 6 .

[0025] The driving assembly includes a first bidirectional screw 8 rotatably connected to the inner wall of the slide groove 2, the side wall of the first bidirectional screw 8 is threadedly connected to the two sliders 3, the side wall of the base 1 is fixedly connected to a servo motor 9, and the output end of the servo motor 9 passes through the side wall of the base 1 and is fixedly connected to the first bidirectional screw 8.

[0026] It should be noted that the side wall of the slider 3 abuts against the inner wall of the slide groove 2 , so that the slider 3 will not rotate with the first bidirectional lead screw 8 .

[0027] The driving assembly also includes a second bidirectional screw 10 rotatably connected to the inner wall of the groove 6, the side wall of the second bidirectional screw 10 is threadedly connected to the two second fixed plates 7, one end of the second bidirectional screw 10 passes through the side wall of the first fixed plate 5 and is fixedly connected to a handle 11, and a limit assembly for limiting the rotation position of the second bidirectional screw 10 is installed on the handle 11.

[0028] It should be noted that the side wall of the second fixing plate 7 abuts against the inner wall of the groove 6 , so that the second fixing plate 7 will not rotate together with the second bidirectional lead screw 10 .

[0029] The limiting assembly includes a threaded rod 12 threadedly connected to the side wall of the handle 11 , and the side wall of the first fixed plate 5 is provided with a plurality of limiting grooves 13 cooperating with the threaded rod 12 , and the plurality of limiting grooves 13 are symmetrically arranged along the axis of the second bidirectional screw 10 .

[0030] A plurality of support columns 14 are symmetrically fixedly connected to the lower end of the base 1 . The number of the plurality of support columns 14 is 4, and the lower ends of the support columns 14 are fixedly connected to the ground via expansion screws.

[0031] In the utility model, firstly, the two ends of the camshaft are placed between the second fixing plates 7 on both sides, and then the servo motor 9 is driven to rotate, driving the two sliders 3 to slide close to each other, driving the two L-shaped rods 4 to approach each other, and then driving the two first fixing plates 5 to approach each other, clamping the two ends of the camshaft, and preliminarily fixing the camshaft.

[0032] Then, rotate the handle 11 to drive the second bidirectional screw 10 to rotate, drive the two second fixed plates 7 to approach each other, clamp and fix the side walls at both ends of the camshaft, thereby improving the fixing effect, and finally rotate the threaded rod 12 into the corresponding limit groove 13 to limit the rotation position of the second bidirectional screw 10.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A camshaft press-fitting fixture, characterized in that: include: Base (1); A clamping mechanism, the clamping mechanism comprising a slide groove (2), a slider (3), an L-shaped rod (4), a first fixed plate (5), a groove (6), a second fixed plate (7) and a driving component, the upper end of the base (1) is provided with a slide groove (2), the inner wall of the slide groove (2) is symmetrically slidably connected with two slide blocks (3), the upper ends of the two slide blocks (3) are symmetrically fixedly connected with two L-shaped rods (4), the side walls of the two L-shaped rods (4) close to each other are fixedly connected with the first fixed plate (5), the side wall of the first fixed plate (5) is provided with a groove (6), the inner wall of the groove (6) is symmetrically slidably connected with two second fixed plates (7), and the inner wall of the slide groove (2) is provided with a driving component.

2. A camshaft press-fitting fixture according to claim 1, characterized in that: in: The driving assembly comprises a first bidirectional lead screw (8) rotatably connected to the inner wall of the slide groove (2), the side wall of the first bidirectional lead screw (8) being threadedly connected to the two sliders (3), the side wall of the base (1) being fixedly connected to a servo motor (9), the output end of the servo motor (9) passing through the side wall of the base (1) and being fixedly connected to the first bidirectional lead screw (8).

3. A camshaft press-fitting fixture according to claim 2, characterized in that: in: The driving assembly also includes a second bidirectional lead screw (10) rotatably connected to the inner wall of the groove (6), the side wall of the second bidirectional lead screw (10) being threadedly connected to two second fixed plates (7), one end of the second bidirectional lead screw (10) passing through the side wall of the first fixed plate (5) and being fixedly connected to a handle (11), and a limit assembly for limiting the rotational position of the second bidirectional lead screw (10) being installed on the handle (11).

4. A camshaft press-fitting fixture according to claim 3, characterized in that: in: The limiting assembly comprises a threaded rod (12) threadedly connected to the side wall of the handle (11); the side wall of the first fixed plate (5) is provided with a plurality of limiting grooves (13) cooperating with the threaded rod (12); and the plurality of limiting grooves (13) are symmetrically arranged along the axis of the second bidirectional lead screw (10).

5. A camshaft press-fitting fixture according to claim 4, characterized in that: in: The second fixing plate (7) is in a T shape.

6. A camshaft press-fitting fixture according to claim 5, characterized in that: in: A plurality of support columns (14) are symmetrically fixedly connected to the lower end of the base (1), the number of the plurality of support columns (14) is four, and the lower ends of the support columns (14) are fixedly connected to the ground via expansion screws.

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