Manual press-fitting equipment for camshaft

Abstract

The utility model discloses manual press-fitting equipment for camshafts, which relates to the technical field of camshaft processing and comprises a press-fitting platform, a clamping driving mechanism is fixedly mounted on the front side of the press-fitting platform, a press-fitting mechanism is arranged on the rear side of the top of the press-fitting platform, and a height adjusting mechanism is fixedly mounted in the middle of the bottom end of the press-fitting platform. Fixing supports are fixedly installed on the left side and the right side of the bottom of the press-fitting platform correspondingly, a cam positioning groove is formed in the center of the top of the press-fitting platform, and a shaft rod penetrating hole penetrating to the bottom of the press-fitting platform is formed in the bottom of the inner wall of the cam positioning groove. Through mutual cooperation of the clamping driving mechanism, the cam clamping mechanism and the press-fitting mechanism, the whole press-fitting equipment only relies on one hydraulic press for press-fitting, the clamping driving mechanism is manually controlled to drive the cam clamping mechanism to clamp a cam, press-fitting is carried out in cooperation with the press-fitting mechanism, equipment maintenance is reduced, the production efficiency is improved, and the production cost is reduced. And the use cost of large equipment is saved.

Description

Technical Field

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

[0002] The camshaft is a component in a piston engine. Its main function is to control the opening and closing of the valve. It is an important part of the engine valve mechanism to ensure that the engine can regularly inhale fresh combustible mixture into the cylinder during operation and discharge the exhaust gas after combustion in time. The camshaft is usually made of high-quality alloy steel and consists of a cylindrical rod with several cams cast on it to drive the valve. The existing technology has the following problems:

[0003] Because during the camshaft production process, several cams need to be press-fitted onto a cylindrical rod body, and the distances between the cams are equal, in order to ensure the accuracy of the press-fitting, the existing press-fitting method usually uses a press-fitting machine for press-fitting. However, press-fitting machines are generally expensive, and in large-scale production tasks, only a large number of press-fitting machines can be purchased for press-fitting work, which leads to an increase in production costs. Utility Model Content

[0004] The utility model provides a camshaft manual press-fitting device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A camshaft manual pressing device comprises a pressing platform, a clamping drive mechanism is fixedly installed on the front side of the pressing platform, a pressing mechanism is arranged on the top rear side of the pressing platform, a height adjustment mechanism is fixedly installed on the middle part of the bottom end of the pressing platform, fixed brackets are fixedly installed on the left and right sides of the bottom of the pressing platform, a cam positioning groove is opened at the top center of the pressing platform, a shaft through hole is opened at the bottom of the inner wall of the cam positioning groove and passes through to the bottom of the pressing platform, and clamping cabins are opened on the left and right sides of the interior of the pressing platform, and the clamping cabins are located on the left and right sides of the cam positioning groove.

[0007] The clamping driving mechanism includes a driving box, which is fixedly installed on the front side of the pressing platform, and a positive and negative threaded rod is movably installed on the right side of the inner wall of the driving box, and the left end of the positive and negative threaded rod penetrates to the left side of the driving box and is fixedly installed with a rotating handle, and the left and right outer walls of the positive and negative threaded rod are provided with threaded walls with opposite threads, and the outer walls of the two threaded walls are threadedly installed with movable plates, and the upper and lower sides of the two movable plates are overlapped with the upper and lower sides of the inner wall of the driving box, and the front sides of the two clamping cabins are provided with sliding grooves that pass through the inner cavity of the driving box, and the rear ends of the two movable plates are fixedly installed with moving rods, and the rear ends of the two moving rods respectively penetrate the sliding grooves to the inner cavity of the clamping cabins, and the clamping rods are fixedly installed on the top and rear sides of the two moving rods, and the opposite ends of the two clamping rods penetrate into the inner cavity of the cam positioning groove and are fixedly installed with a cam clamping mechanism.

[0008] A further improvement of the technical solution of the utility model is that the cam clamping mechanism includes arc-shaped clamping plates, the opposite surfaces of the two arc-shaped clamping plates are fixedly installed with rubber pads 1, and the opposite surfaces of the two rubber pads 1 are fixedly installed with a plurality of anti-sliding blocks.

[0009] A further improvement of the technical solution of the utility model lies in that: the pressing mechanism includes a vertical plate, the bottom of the vertical plate is fixedly connected to the top of the pressing platform, a hanging plate is fixedly installed on the upper front side of the vertical plate, a hydraulic press is fixedly installed on the top front side of the hanging plate, the output end of the hydraulic press passes through the bottom of the hanging plate and is fixedly installed with a pressing plate, the left and right sides of the bottom of the pressing plate are fixedly installed with hanging plates, the opposite back sides of the two hanging plates are fixedly installed with electric push rods, the output ends of the two electric push rods respectively pass through the opposite sides of the two hanging plates and are fixedly installed with shaft clamping arc plates.

[0010] A further improvement of the technical solution of the utility model lies in that: the height adjustment mechanism includes an adjusting hanging plate, the adjusting hanging plate is fixedly installed on the bottom of the pressing platform, a lifting groove is opened on the front side of the adjusting hanging plate, a threaded rod is movably installed on the top of the inner wall of the lifting groove, the bottom end of the threaded rod penetrates to the bottom of the adjusting hanging plate and is fixedly installed with a knob, a lifting block is threadedly installed on the outer wall of the threaded rod, the left and right sides of the lifting block are overlapped with the left and right sides of the inner wall of the lifting groove, a lifting plate is fixedly installed on the front end of the lifting block, and the center of the lifting plate is located below the through hole of the shaft rod.

[0011] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0012] 1. The utility model provides a manual press-fitting device for a camshaft. Through the cooperation of a clamping drive mechanism, a cam clamping mechanism, and a press-fitting mechanism, the overall press-fitting device relies on only one hydraulic press for press-fitting. The cam can be clamped by manually controlling the clamping drive mechanism to drive the cam clamping mechanism, and the press-fitting is performed in cooperation with the press-fitting mechanism, thereby reducing equipment maintenance and saving the cost of using large equipment.

[0013] 2. The utility model provides a manual pressing device for a camshaft. Through the cooperation of the shaft through-hole and the height adjustment mechanism, when multiple cams are pressed on the camshaft, the lifting plate included in the height adjustment mechanism with adjustable height is pressed against the shaft through-hole, thereby realizing equidistant pressing of cams at different heights. Manual pressing can also ensure the distance adjustment between the cams on the outer wall of the camshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the drive box and the press-fitting platform of the utility model structure;

[0016] Figure 3 It is a schematic diagram of the cam clamping mechanism of the utility model structure;

[0017] Figure 4 It is a schematic diagram of the press-fitting mechanism of the utility model structure;

[0018] Figure 5 It is a schematic diagram of the height adjustment mechanism of the utility model structure.

[0019] In the figure: 1. Press-fitting platform; 11. Clamping cabin; 12. Cam positioning groove; 13. Shaft rod through hole; 2. Clamping drive mechanism; 21. Drive box; 22. Positive and negative threaded rod; 23. Rotating handle; 24. Moving plate; 25. Slide groove; 26. Moving rod; 27. Clamping rod; 28. Cam clamping mechanism; 281. Arc clamping plate; 282. Rubber pad; 283. Anti-sliding block; 3. Press-fitting mechanism; 31. Vertical plate; 32. Hanging plate; 33. Hydraulic press; 34. Pressing plate; 35. Suspension plate; 36. Electric push rod; 37. Shaft rod clamping arc plate; 4. Height adjustment mechanism; 41. Adjusting hanging plate; 42. Lifting groove; 43. Threaded rod; 44. Knob; 45. Lifting block; 46. Lifting plate; 5. Fixed bracket. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, the utility model provides a camshaft manual pressing device, including a pressing platform 1, a clamping drive mechanism 2 is fixedly installed on the front side of the pressing platform 1, a pressing mechanism 3 is arranged on the top rear side of the pressing platform 1, a height adjustment mechanism 4 is fixedly installed on the middle part of the bottom end of the pressing platform 1, and fixed brackets 5 are fixedly installed on the left and right sides of the bottom of the pressing platform 1, a cam positioning groove 12 is opened at the top center of the pressing platform 1, and an axial rod through hole 13 is opened at the bottom of the inner wall of the cam positioning groove 12 and penetrates to the bottom of the pressing platform 1, and clamping cabins 11 are opened on the left and right sides of the inside of the pressing platform 1, and the clamping cabins 11 are located on the left and right sides of the cam positioning groove 12, and the clamping drive mechanism 2 includes a driving box 21, and the driving box 21 is fixedly installed on the front side of the pressing platform 1, and a positive and negative threaded rod 22 is movably installed on the right side of the inner wall of the driving box 21, and the left end of the positive and negative threaded rod 22 penetrates to the left side of the driving box 21 and is fixedly installed with a rotating The handle 23 and the outer walls of the left and right sides of the positive and negative threaded rods 22 are provided with threaded walls with opposite threads, and the outer walls of the two threaded walls are threadedly installed with movable plates 24, and the upper and lower sides of the two movable plates 24 are overlapped with the upper and lower sides of the inner wall of the driving box 21, and the front sides of the two clamping cabins 11 are provided with sliding grooves 25 that penetrate into the inner cavity of the driving box 21, and the rear ends of the two movable plates 24 are fixedly installed with movable rods 26, and the rear ends of the two movable rods 26 respectively penetrate the sliding grooves 25 to the inner cavity of the clamping cabin 11, and the top rear sides of the two movable rods 26 are fixedly installed with clamping rods 27, and the opposite ends of the two clamping rods 27 penetrate into the inner cavity of the cam positioning groove 12 and are fixedly installed with cam clamping mechanisms 28, and the two cam clamping mechanisms 28 include arc-shaped clamping plates 281, and the opposite surfaces of the two arc-shaped clamping plates 281 are fixedly installed with rubber pads 282, and the opposite surfaces of the two rubber pads 282 are fixedly installed with a plurality of anti-sliding blocks 283;

[0022] During press-fitting, the cam is placed between the two cam clamping mechanisms 28 in the cam positioning groove 12, and then the rotating handle 23 is manually rotated to drive the positive and negative threaded rod 22 to rotate, so that the threaded walls of the opposite threads on the left and right sides of the positive and negative threaded rod 22 rotate, driving the two moving plates 24 to move closer to each other, and using the sliding of the moving rod 26 in the slide groove 25, the clamping rod 27 installed on the top of the moving rod 26 drives the arc-shaped clamping plate 281 in the inner cavity of the cam positioning groove 12 to move closer to each other, so that the cam is clamped at the center of the bottom of the inner wall of the cam positioning groove 12, located above the shaft rod through hole 13, and the rubber pad 282 on the outer wall of the arc-shaped clamping plate 281 and the anti-sliding block 283 made of rubber material improve the clamping stability of the metal cam.

[0023] like Figure 4As shown, the pressing mechanism 3 includes a vertical plate 31, the bottom of the vertical plate 31 is fixedly connected to the top of the pressing platform 1, a hanging plate 32 is fixedly installed on the upper front side of the vertical plate 31, a hydraulic press 33 is fixedly installed on the front side of the top of the hanging plate 32, the output end of the hydraulic press 33 passes through the bottom of the hanging plate 32 and is fixedly installed with a pressing plate 34, the left and right sides of the bottom of the pressing plate 34 are fixedly installed with hanging plates 35, the opposite back surfaces of the two hanging plates 35 are fixedly installed with electric push rods 36, the output ends of the two electric push rods 36 respectively pass through the opposite surfaces of the two hanging plates 35 and are fixedly installed with shaft clamping arc plates 37;

[0024] By starting the electric push rod 36 on the back side of the two hanging plates 35 at the bottom of the pressure plate 34, the camshaft rod placed at the center of the bottom of the pressure plate 34 is clamped and fixed so that it is located above the cam fixed below. Then, the hydraulic press 33 is started to drive the pressure plate 34 and the fixed camshaft rod to be pressed down, and after being inserted into the center of the cam, it passes through the shaft rod through hole 13 to the bottom of the press-fitting platform 1.

[0025] like Figure 5 As shown, the height adjustment mechanism 4 includes an adjustment hanging plate 41, which is fixedly installed at the bottom of the press-fitting platform 1, and a lifting groove 42 is opened on the front side of the adjustment hanging plate 41. A threaded rod 43 is movably installed on the top of the inner wall of the lifting groove 42. The bottom end of the threaded rod 43 penetrates to the bottom of the adjustment hanging plate 41 and is fixedly installed with a knob 44. A lifting block 45 is threadedly installed on the outer wall of the threaded rod 43. The left and right sides of the lifting block 45 overlap with the left and right sides of the inner wall of the lifting groove 42. A lifting plate 46 is fixedly installed at the front end of the lifting block 45, and the center of the lifting plate 46 is located below the shaft rod through hole 13;

[0026] After the camshaft rod passes through the shaft through hole 13, it will stop when it abuts against the lifting plate 46 at the bottom. At this time, the cam is pressed into the upper position of the outer wall of the camshaft rod. Then, the hydraulic press 33 is started to raise the camshaft rod with a cam pressed into it. Then, the new cam is placed between the two cam clamping mechanisms 28 in the cam positioning groove 12 for clamping and fixing. Then, the threaded rod 43 in the inner cavity of the lifting groove 42 is driven to rotate by manually rotating the knob 44, so that the lifting block 45 drives the lifting plate 46 to rise to an equidistant height. Then, the camshaft rod with a cam pressed into it is driven down by starting the hydraulic press 33, until it passes through the second positioned cam, until it abuts against the lifting plate 46 that has risen a certain distance and stops. At this time, the second cam will be located below the first cam. Similarly, the height of the lifting plate 46 each time it rises is measured and raised equidistantly, so that the cams can be installed at equal distances on the outer wall of the camshaft rod, and the press-fitting is completed.

[0027] The following is a detailed description of the working principle of the camshaft manual press-fitting equipment.

[0028] like Figure 1-5As shown, during press-fitting, the cam is placed between the two cam clamping mechanisms 28 in the cam positioning groove 12, and then the rotating handle 23 is manually rotated to drive the positive and negative threaded rod 22 to rotate, so that the threaded walls of the opposite threads on the left and right sides of the positive and negative threaded rod 22 rotate, driving the two moving plates 24 to move closer to each other, and using the sliding of the moving rod 26 in the slide groove 25, the clamping rod 27 installed on the top of the moving rod 26 drives the arc-shaped clamping plate 281 in the inner cavity of the cam positioning groove 12 to move closer to each other, so that the cam is clamped at the center of the bottom of the inner wall of the cam positioning groove 12, located above the shaft rod through hole 13, and the rubber pad 282 on the outer wall of the arc-shaped clamping plate 281 and the rubber anti-sliding block 283 improve the clamping stability of the metal cam, and then the electric push rod 36 on the back of the two hanging plates 35 at the bottom of the pressing plate 34 is started to clamp and fix the cam shaft rod placed at the center of the bottom circle of the pressing plate 34, so that it is located above the cam fixed below, and then the hydraulic press 33 is started to drive the pressing plate 3 4 is pressed down with the fixed camshaft rod, and after being inserted into the center of the cam circle, it passes through the shaft rod through hole 13 to the bottom of the press-fitting platform 1, and stops when it abuts against the lifting plate 46 at the bottom. At this time, the cam is pressed at the upper position of the outer wall of the camshaft rod, and then the hydraulic press 33 is started to raise the camshaft rod with a cam pressed, and then the new cam is placed between the two cam clamping mechanisms 28 in the cam positioning groove 12 for clamping and fixing, and then the threaded rod 43 in the inner cavity of the lifting groove 42 is driven to rotate by manually rotating the knob 44, so that the lifting block 45 drives the lifting plate 46 to rise to an equidistant height, and then the camshaft rod with a cam pressed is driven down by starting the hydraulic press 33, until it passes through the second positioned cam, and stops when it abuts against the lifting plate 46 that has risen a certain distance, at which time the second cam will be located below the first cam, and by analogy, the height of each rise of the lifting plate 46 is measured and raised equidistantly, so that the distance between the cams installed on the outer wall of the camshaft rod is equal, and the press-fitting is completed.

[0029] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A camshaft manual press-fitting device, comprising a press-fitting platform (1), characterized in that: A clamping drive mechanism (2) is fixedly installed on the front side of the press-fitting platform (1), a press-fitting mechanism (3) is arranged on the top rear side of the press-fitting platform (1), a height adjustment mechanism (4) is fixedly installed in the middle of the bottom end of the press-fitting platform (1), and fixed brackets (5) are fixedly installed on the left and right sides of the bottom of the press-fitting platform (1), a cam positioning groove (12) is provided at the center of the top of the press-fitting platform (1), and an axial rod through hole (13) is provided at the bottom of the inner wall of the cam positioning groove (12) and penetrates to the bottom of the press-fitting platform (1), and clamping cabins (11) are provided on the left and right sides of the interior of the press-fitting platform (1), and the clamping cabins (11) are located on the left and right sides of the cam positioning groove (12); The clamping drive mechanism (2) comprises a drive box (21), the drive box (21) is fixedly mounted on the front side of the press-fitting platform (1), a positive and negative threaded rod (22) is movably mounted on the right side of the inner wall of the drive box (21), the left end of the positive and negative threaded rod (22) penetrates the left side of the drive box (21) and is fixedly mounted with a rotating handle (23), the left and right outer walls of the positive and negative threaded rod (22) are both provided with threaded walls with opposite threads, and the outer walls of the two threaded walls are both threadedly mounted with movable plates (24), and the upper and lower sides of the two movable plates (24) are both connected to the drive box The inner wall of the two clamping chambers (21) is overlapped at the upper and lower sides, the front sides of the two clamping chambers (11) are provided with a slide groove (25) penetrating to the inner cavity of the driving box (21), the rear ends of the two movable plates (24) are fixedly installed with a moving rod (26), the rear ends of the two movable rods (26) respectively penetrate the slide groove (25) to the inner cavity of the clamping chamber (11), the top rear sides of the two movable rods (26) are fixedly installed with a clamping rod (27), and the opposite ends of the two clamping rods (27) penetrate into the inner cavity of the cam positioning groove (12) and are fixedly installed with a cam clamping mechanism (28).

2. The camshaft manual press-fitting device according to claim 1, characterized in that: The two cam clamping mechanisms (28) each include an arc-shaped clamping plate (281), the opposite surfaces of the two arc-shaped clamping plates (281) are fixedly mounted with a rubber pad 1 (282), and the opposite surfaces of the two rubber pads 1 (282) are fixedly mounted with a plurality of anti-sliding blocks (283).

3. The camshaft manual press-fitting device according to claim 1, characterized in that: The pressing mechanism (3) comprises a vertical plate (31), the bottom of the vertical plate (31) is fixedly connected to the top of the pressing platform (1), a hanging plate (32) is fixedly installed on the upper front side of the vertical plate (31), a hydraulic press (33) is fixedly installed on the front side of the top of the hanging plate (32), the output end of the hydraulic press (33) passes through the bottom of the hanging plate (32) and is fixedly installed with a pressing plate (34), the left and right sides of the bottom of the pressing plate (34) are fixedly installed with hanging plates (35), the opposite back sides of the two hanging plates (35) are fixedly installed with electric push rods (36), the output ends of the two electric push rods (36) respectively pass through the opposite sides of the two hanging plates (35) and are fixedly installed with shaft clamping arc plates (37).

4. The camshaft manual press-fitting device according to claim 1, characterized in that: The height adjustment mechanism (4) comprises an adjusting hanging plate (41), the adjusting hanging plate (41) is fixedly mounted on the bottom of the press-fitting platform (1), a lifting groove (42) is provided on the front side of the adjusting hanging plate (41), a threaded rod (43) is movably mounted on the top of the inner wall of the lifting groove (42), the bottom end of the threaded rod (43) penetrates to the bottom of the adjusting hanging plate (41) and is fixedly mounted with a knob (44), a lifting block (45) is threadedly mounted on the outer wall of the threaded rod (43), the left and right sides of the lifting block (45) overlap with the left and right sides of the inner wall of the lifting groove (42), a lifting plate (46) is fixedly mounted on the front end of the lifting block (45), and the center of the lifting plate (46) is located below the shaft rod through hole (13).

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