Clamp special for camshaft grinding

Abstract

The utility model belongs to the technical field of cam shaft clamps, and particularly relates to a special clamp for grinding a cam shaft. Comprising a base, a supporting table is fixedly connected to the base, and a horizontal adjusting mechanism and a special clamp for camshaft machining are arranged on the supporting table. Through structural optimization and improvement, the cam shaft clamping device has the capability of clamping cam shafts with different diameters, and the whole cam shaft can be well stabilized after clamping; in addition, the gravity center in the machining process is lowered, so that the overall safety is better; the operation is simple and easy to master.

Description

Technical Field

[0001] The utility model belongs to the technical field of camshaft fixtures, and in particular relates to a special fixture for camshaft grinding. Background Art

[0002] The camshaft is one of the important parts in the engine, used to control the opening and closing sequence of the valves. It is usually made of a long strip of metal material with a raised cam and a groove for the valve. The camshaft is connected to the reciprocating motion of the engine through the crankshaft. As the crankshaft rotates, the cam will control the opening and closing of the valve through the movement of the groove.

[0003] Publication (Announcement) No.: CN218875081U, the utility model relates to a special fixture for camshaft grinding, including a base, the lower end of the base is fixedly connected with a motor, the output end of the motor is fixedly connected with a placement seat, a clamping assembly is arranged on the base, a locking assembly is arranged on the clamping assembly, the clamping assembly includes a column fixedly mounted on the upper end of the base, the inner cavity wall of the column is movably connected with a threaded rod, the left end of the column is movably connected with a rotating shaft, and the rotating shaft and the outer side of the threaded rod are both fixedly connected with gears. The special fixture for camshaft grinding is provided with a clamping assembly, and the transmission shaft is driven to rotate by rotating the handle. Under the meshing of the gears, the threaded rod rotates through the bearing, and the threaded seat drives the stop seat to move downward through the restriction of the connecting rod and the sliding hole, so that the rotating seat clamps and fixes its workpiece, and with the assistance of the stabilizing seat, the workpiece is not easy to be positionally biased and deformed during processing.

[0004] After analysis, first of all, the solution is to place the camshaft vertically. This processing method is likely to cause pressure on the motor at the lower end, and the overall center of gravity is high, which is prone to safety hazards; in addition, due to the non-uniform diameter of the camshaft, effective clamping is required during rotation, and this solution lacks a corresponding clamping structure, resulting in poor stability during processing; in response to the above problems, the solution needs to be optimized and improved. Utility Model Content

[0005] In order to solve the problems existing in the background technology, the utility model provides a special clamp for camshaft grinding; the clamp has the ability to clamp camshafts of different sizes and has better control safety.

[0006] The utility model provides a special fixture for camshaft grinding, comprising a base, the base is fixedly connected to a support platform, the support platform is provided with a horizontal adjustment mechanism and a special fixture for camshaft processing; the special fixture for camshaft processing comprises a motor 1 and a control panel located on the support platform, the horizontal adjustment mechanism and the output end of the motor 1 are both provided with a fixing fixture, the fixing fixture comprises a turntable connected to the output end of the motor 1 and the horizontal adjustment mechanism, the turntable is provided with a groove, an annular gear row is rotatably connected in the groove, a through hole is provided on one side of the turntable corresponding to the groove, a fan-shaped worm wheel is provided on the annular gear row corresponding to the through hole, a plurality of fan-shaped gears are uniformly rotated in the groove, the annular gear row and the fan-shaped gear are meshed with each other, an arc fixing rod is fixedly connected to the fan-shaped gear, the turntable is located in the through hole and is fixedly connected to a connecting rod 1 and a connecting rod 2, a worm is rotatably provided between the connecting rod 1 and the connecting rod 2, the fan-shaped worm wheel and the worm are meshed with each other, and a polygonal groove is provided on the worm.

[0007] Furthermore, the horizontal adjustment mechanism includes a cross bar located on the support platform, a cavity is provided in the cross bar, a strip-shaped through hole is provided on the lower side of the cross bar corresponding to the cavity, a second motor is fixedly installed in the cavity, a screw is fixedly connected to the output end of the second motor, a moving block is threadedly connected to the screw, the moving block extends out of one end of the cross bar through the strip-shaped through hole and is rotatably connected to a rotating shaft, and the rotating shaft is fixedly connected to the corresponding turntable.

[0008] Furthermore, the control panel is electrically connected to the motor one and the motor two.

[0009] Furthermore, a magnet and a connecting rope are symmetrically fixedly installed on the lower side of the cross bar, and a hook is fixedly connected to the lower end of the connecting rope, and the hook is magnetically connected to the magnet.

[0010] Furthermore, a counterweight is fixedly connected to the rotating disk corresponding to the worm.

[0011] Furthermore, a rubber pad is fixedly connected to the movable end of the arc-shaped fixing rod.

[0012] Furthermore, the moving block is slidably connected to the inner wall of the cavity.

[0013] Beneficial effects of the utility model:

[0014] The utility model has the ability to clamp camshafts of different diameters through structural optimization and improvement, and can stabilize the entire camshaft well after clamping; in addition, the center of gravity during the processing is lowered, so that the overall safety is better; the operation is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a top perspective view of a camshaft of a special fixture for camshaft grinding of the utility model when the camshaft is working.

[0016] Figure 2 This is a bottom-up stereoscopic view of a camshaft of a special fixture for camshaft grinding according to the utility model when the camshaft is working.

[0017] Figure 3 The utility model is a cross-sectional view of a turntable of a special fixture for camshaft grinding.

[0018] Figure 4 The utility model is a partial cross-sectional view of a support platform of a special fixture for camshaft grinding.

[0019] As shown in the figure:

[0020] 1. Base, 2. Support table, 3. Motor 1, 4. Control panel, 5. Turntable, 6. Groove, 7. Annular gear row, 8. Through hole, 9. Fan-shaped worm gear, 10. Fan-shaped gear, 11. Arc-shaped fixing rod, 12. Connecting rod 1, 13. Connecting rod 2, 14. Worm, 15. Polygonal groove, 16. Cross bar, 17. Cavity, 18. Strip through hole, 19. Motor 2, 20. Screw, 21. Moving block, 22. Rotating shaft, 23. Magnet, 24. Connecting rope, 25. Hook, 26. Counterweight, 27. Rubber pad. DETAILED DESCRIPTION

[0021] 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.

[0022] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0023] Please see all instructions drawings:

[0024] A special fixture for camshaft grinding comprises a base 1, a support platform 2 is fixedly connected to the base 1, and a horizontal adjustment mechanism and a special fixture for camshaft processing are arranged on the support platform 2;

[0025] The special fixture for camshaft processing includes a motor 3 and a control surface 4 located on a support table 2, and a fixing fixture is provided on the output end of the horizontal adjustment mechanism and the motor 3. The fixing fixture includes a turntable 5 connected to the output end of the motor 3 and the horizontal adjustment mechanism, a groove 6 is provided in the turntable 5, and an annular gear row 7 is rotatably connected in the groove 6. A through hole 8 is provided on one side of the turntable 5 corresponding to the groove 6, and a fan-shaped worm wheel 9 is provided in the annular gear row 7 corresponding to the through hole 8. A plurality of fan-shaped gears 10 are uniformly rotated in the groove 6, and the annular gear row 7 and the fan-shaped gear 10 are meshed with each other. An arc-shaped fixing rod 11 is fixedly connected to the fan-shaped gear 10, and the turntable 5 is located in the through hole 8 and is fixedly connected to a connecting rod 12 and a connecting rod 2 13, and a worm 14 is rotatably provided between the connecting rod 12 and the connecting rod 2 13, and the fan-shaped worm wheel 9 and the worm 14 are meshed with each other, and a polygonal groove 15 is provided on the worm 14;

[0026] From the above description, it can be known that one end of the camshaft is placed into the groove 6 in the corresponding turntable 5, and the worm 14 is controlled to rotate, which drives the fan-shaped worm wheel 9 to rotate, drives the arc-shaped gear row 7 to rotate, and drives a number of fan-shaped gears 10 to rotate, so that the arc-shaped fixing rods 11 clamp the camshaft together, and the other end of the camshaft is adjusted to the corresponding position through the horizontal adjustment mechanism, and then fixed in the same way, and then the power is turned on to control the motor 3 to rotate, and then it can be carried out.

[0027] As a technical optimization scheme of the utility model, the horizontal adjustment mechanism includes a cross bar 16 located on the support platform 2, a cavity 17 is provided in the cross bar 16, a strip-shaped through hole 18 is provided on the lower side of the cross bar 16 corresponding to the cavity 17, a motor 2 19 is fixedly installed in the cavity 17, a screw 20 is fixedly connected to the output end of the motor 2 19, a moving block 21 is threadedly connected to the screw 20, and one end of the moving block 21 extending out of the cross bar 16 through the strip-shaped through hole 18 is rotatably connected to a rotating shaft 22, and the rotating shaft 22 is fixedly connected to the corresponding turntable 5;

[0028] From the above description, it can be known that the control motor 2 19 works, so that the screw rod 20 rotates, driving the moving rod 21 to move horizontally, and adjusting according to the length of the camshaft.

[0029] As a technical optimization solution of the utility model, the control panel 4 is electrically connected to the motor 1 3 and the motor 2 19;

[0030] From the above description, it can be seen that the worker can directly control the operation of motor 1 3 and motor 2 19 through the control panel 4, so that the overall convenience is greatly improved.

[0031] As a technical optimization solution of the utility model, a magnet 23 and a connecting rope 24 are symmetrically fixedly installed on the lower side of the cross bar 16, and a hook 25 is fixedly connected to the lower end of the connecting rope 24, and the hook 25 is magnetically connected to the magnet 23;

[0032] From the above description, it can be seen that the hook 25 can assist the worker to place the camshaft in advance, so as to facilitate the fixing and clamping of the two ends.

[0033] As a technical optimization solution of the utility model, a counterweight block 26 is fixedly connected to the turntable 5 corresponding to the worm 14;

[0034] It can be seen from the above description that the counterweight 26 can balance the center of gravity of the worm 14 .

[0035] As a technical optimization solution of the utility model, the movable end of the arc-shaped fixing rod 11 is fixedly connected with a rubber pad 27;

[0036] It can be seen from the above description that the rubber pad 27 can increase the friction force and also protect the appearance of the camshaft.

[0037] As a technical optimization solution of the utility model, the moving block 21 is slidably connected to the inner wall of the cavity 17;

[0038] It can be seen from the above description that the connection mode of the sliding connection can optimize the stability of the movement of the moving block 21 .

[0039] Working principle:

[0040] Now place the camshaft on the hook 25, control the motor 2 19 to work, so that the moving block 21 moves, drives the turntable 5 to move, so that the turntables 5 on both sides support the camshaft, rotate the corresponding worm 14 in turn, clamp the camshaft, release the hook 25, so that the hook 25 is adsorbed on the magnet 23, control the motor 1 3 to work, drive the camshaft to rotate, and perform processing.

[0041] The above describes the utility model and its implementation methods, which are not restrictive. The specific implementation method is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A special fixture for camshaft grinding, comprising a base, characterized in that: The base is fixedly connected to a support platform, and the support platform is provided with a horizontal adjustment mechanism and a special fixture for camshaft processing; the special fixture for camshaft processing includes a motor 1 and a control panel located on the support platform, and the horizontal adjustment mechanism and the output end of the motor 1 are both provided with a fixing fixture, and the fixing fixture includes a turntable connected to the output end of the motor 1 and the horizontal adjustment mechanism, and a groove is provided in the turntable, and an annular gear row is rotatably connected in the groove, a through hole is provided on one side of the turntable corresponding to the groove, and a fan-shaped worm gear is provided in the annular gear row corresponding to the through hole, and a plurality of fan-shaped gears are evenly rotated in the groove, and the annular gear row and the fan-shaped gear are meshed with each other, and an arc fixing rod is fixedly connected to the fan gear. The turntable is located in the through hole and is fixedly connected to a connecting rod 1 and a connecting rod 2, a worm is rotatably provided between the connecting rod 1 and the connecting rod 2, and the fan-shaped worm gear and the worm are meshed with each other, and a polygonal groove is provided on the worm.

2. The camshaft grinding fixture according to claim 1, characterized in that: The horizontal adjustment mechanism includes a cross bar located on a support platform, a cavity is provided in the cross bar, a strip through hole is provided on the lower side of the cross bar corresponding to the cavity, a second motor is fixedly installed in the cavity, a screw is fixedly connected to the output end of the second motor, a moving block is threadedly connected to the screw, one end of the moving block extends out of the cross bar through the strip through hole and is rotatably connected to a rotating shaft, and the rotating shaft is fixedly connected to the corresponding turntable.

3. The camshaft grinding fixture according to claim 2, characterized in that: The control panel is electrically connected to the motor 1 and the motor 2.

4. The camshaft grinding fixture according to claim 3, characterized in that: A magnet and a connecting rope are symmetrically fixedly installed on the lower side of the cross bar, and a hook is fixedly connected to the lower end of the connecting rope, and the hook is magnetically connected to the magnet.

5. The camshaft grinding fixture according to claim 4, characterized in that: A counterweight block is fixedly connected to the rotating disk corresponding to the worm.

6. The camshaft grinding fixture according to claim 5, characterized in that: The movable end of the arc-shaped fixing rod is fixedly connected with a rubber pad.

7. The camshaft grinding fixture according to claim 6, characterized in that: The moving block is slidably connected to the inner wall of the cavity.

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