An assembled camshaft press

Abstract

The present invention belongs to the technical field of assembled camshaft assembly, and provides an assembled camshaft press, comprising: an installation platform; a clamping piece is provided on the mobile platform, one end of a steel pipe is detachably connected to the clamping piece, and the steel pipe is located at the center position of the bottom surface of the mobile platform; a rotating disk is rotatably connected to the center position of the top surface of the installation platform, the top surface of the rotating disk is fixedly connected to a limiting frame, a plurality of cams are contained in the limiting frame, the inner holes of the plurality of cams overlap with each other, the rotating disk and the mobile platform are respectively provided with through holes, the two through holes overlap with the inner holes of the plurality of cams, and the mobile platform drives the steel pipe to move and pass through the inner holes of the plurality of cams and the two through holes. The present invention realizes: the cams are fixed in sequence after the steel pipe is driven by the mobile platform to pass through the plurality of cams and the rotating disk, without the need to repeatedly lift the steel pipe and sleeve each cam on the steel pipe, and the rotating disk provided at the same time realizes the accuracy of the installation angle of each cam, thereby improving the installation efficiency of the assembled camshaft.

Description

Technical Field

[0001] The invention belongs to the technical field of assembled camshaft assembly, and in particular relates to an assembled camshaft press machine. Background Art

[0002] The traditional camshaft manufacturing method is mainly integral forging or casting, and the cam or other functional parts (such as flanges and sleeves) are integrated with the shaft. Therefore, this type of camshaft has the following disadvantages: due to the numerous machining steps behind the camshaft, the machining allowance is large, which will result in the entire camshaft being heavy, a lot of material waste, and inconvenient manufacturing.

[0003] In the prior art, an assembled camshaft installation process is generally adopted. The assembled camshaft is composed of a steel pipe and a plurality of cam pieces with different orientations arranged on the steel pipe. At the same time, in the prior art, the cams are generally placed on the steel pipe in sequence and fixed in sequence. The steel pipe needs to be repeatedly inserted into each cam with adjusted angle, which increases the reciprocating stroke of the steel pipe and takes a long time. Summary of the Invention

[0004] The purpose of the present invention is to provide an assembled camshaft press to solve the above problems. The present invention drives the steel pipe through several cams and the rotating disk through a mobile platform to fix the cams in sequence. There is no need to repeatedly lift the steel pipe and put each cam on the steel pipe. At the same time, the rotating disk ensures the accuracy of the installation angle of each cam, thereby improving the installation efficiency of the assembled camshaft.

[0005] To achieve the above object, the present invention provides the following solution:

[0006] Installation platform;

[0007] A mobile platform is provided with a clamping piece, one end of a steel pipe is detachably connected to the clamping piece, and the steel pipe is located at the center of the bottom surface of the mobile platform;

[0008] A rotating disk is rotatably connected to the center position of the top surface of the mounting platform. A limiting frame is fixed to the top surface of the rotating disk. A plurality of cams are contained in the limiting frame. The inner holes of the plurality of cams coincide with each other. Through holes are respectively provided on the rotating disk and the movable platform. The two through holes coincide with the inner holes of the plurality of cams. The movable platform drives the steel pipe to move and pass through the inner holes of the plurality of cams and the two through holes.

[0009] Preferably, a lifting plate is provided with a lifting rod on the top surface of the lifting plate, the lifting rod passes through the lifting plate and is connected to a hydraulic cylinder, the end of the lifting rod away from the lifting plate is located in the inner cavity of the steel pipe and is fixed with an expansion block, and the expansion block is also provided with two expansion half rings in the circumference, the two expansion half rings are fixed to the top surface of the lifting plate through a connecting rod, and the lifting rod moves along its axis, so that the expansion block is in sliding contact with the two expansion half rings and the diameter of the two expansion half rings is increased.

[0010] Preferably, a first threaded rod is threadedly connected to the movable platform, the axis of the first threaded rod is parallel to the axis of the steel pipe, a first connecting hole is opened on the top surface of the mounting platform, the end of the first threaded rod away from the movable platform passes through the first connecting hole and is fixedly connected to the output end of the first driving motor, the first driving motor is fixedly connected to the bottom surface of the mounting platform, one end of the first guide column is also fixedly connected to the bottom surface of the movable platform, the other end of the first guide column passes through the mounting platform and is in sliding contact with the mounting platform, a first guide cylinder is also sleeved on and slidably connected to the first guide column, and the first guide cylinder is fixedly connected to the bottom surface of the mounting platform.

[0011] Preferably, a second threaded rod is threadedly connected to the lifting plate, and the axis of the second threaded rod is parallel to the axis of the first threaded rod. A second connecting hole is also provided on the mounting platform, and the end of the second threaded rod away from the lifting plate passes through the second connecting hole and is fixedly connected to the output end of the second drive motor. The second drive motor is fixed to the top surface of the mounting platform, and one end of the second guide column is also fixed to the bottom surface of the second drive platform. The other end of the second guide column passes through the lifting plate and is in sliding contact with the lifting plate. A second guide cylinder is also sleeved and slidably connected on the second guide column, and the second guide cylinder is fixed to the top surface of the movable plate.

[0012] Preferably, the ring gear, the inner wall of the ring gear and the circumferential outer wall of the rotating disk are fixedly connected, the ring gear is engaged with a gear, one end of the rotating shaft is connected to the center position of the bottom surface of the gear, a connecting hole is opened on the mounting platform, the other end of the rotating shaft passes through the connecting hole and is fixedly connected to the output end of the driving motor, and the driving motor is fixedly connected to the bottom surface of the mounting platform.

[0013] Preferably, a plurality of protrusions are fixedly connected to the bottom surface of the rotating disk, and an annular groove is provided on the top surface of the mounting platform, and the plurality of protrusions are in sliding contact with the inner wall of the annular groove.

[0014] Preferably, the clamping member includes a fixed V-shaped frame and a movable V-shaped frame, a fixing hole is provided at the center position of the top surface of the movable platform, the fixed V-shaped frame is fixedly connected to the side wall of the fixing hole, the side wall of the movable V-frame is fixedly connected to the output end of a telescopic cylinder, the telescopic cylinder drives the movable V-frame to move laterally in the fixing hole, a baffle is fixedly connected to the top surface of the fixed V-frame, and the baffle abuts against the steel pipe.

[0015] Preferably, the support legs, the four support brackets are fixed to the bottom surface of the mounting platform, and the length of the support legs is greater than the movable distance of the lifting plate.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects:

[0017] The mobile platform drives the steel pipe to pass through several cams and the rotating disk, and then fixes the cams in turn. There is no need to repeatedly lift the steel pipe and put each cam on the steel pipe. At the same time, the rotating disk ensures the accuracy of the installation angle of each cam, thereby improving the installation efficiency of the assembled camshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0019] Figure 1 This is a structural schematic diagram of an assembled camshaft press machine according to the present invention;

[0020] Figure 2 It is a structural schematic diagram of the lifting plate in the present invention;

[0021] Figure 3 Schematic diagram of the structure of the expansion block in the present invention;

[0022] Figure 4 Schematic diagram of the structure of the protrusion in the present invention;

[0023] Among them, 1. Installation platform; 2. Mobile platform; 3. Steel pipe; 4. Rotating disk; 5. Limit frame; 6. Cam; 7. Lifting plate; 8. Lifting rod; 9. Hydraulic cylinder; 10. Expansion block; 11. Expansion half ring; 12. Connecting rod; 13. First threaded rod; 14. First guide column; 15. First guide cylinder; 16. Second threaded rod; 17. Second drive motor; 18. Second guide column; 19. Second guide cylinder; 20. Ring gear; 21. Gear; 22. First drive motor; 23. Drive motor; 24. Protrusion; 25. Annular groove; 26. Fixed V-frame; 27. Mobile V-frame; 28. Telescopic cylinder; 29. ​​Fixing hole; 30. Support leg. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figures 1-4 As shown, the present invention provides an assembled camshaft press machine, which specifically includes:

[0027] Installation platform 1;

[0028] A mobile platform 2 is provided with a clamping piece, one end of a steel pipe 3 is detachably connected to the clamping piece, and the steel pipe 3 is located at the center of the bottom surface of the mobile platform 2;

[0029] The rotating disk 4 is rotatably connected to the center position of the top surface of the mounting platform 1. The top surface of the rotating disk 4 is fixedly connected to a limit frame 5. A plurality of cams 6 are contained in the limit frame 5. The inner holes of the plurality of cams 6 coincide with each other. Through holes are respectively opened on the rotating disk 4 and the movable platform 2. The two through holes coincide with the inner holes of the plurality of cams 6. The movable platform 2 drives the steel pipe 3 to move and pass through the inner holes of the plurality of cams 6 and the two through holes.

[0030] Before installation, first fix the end of the steel pipe 3 on the mobile platform 2 through the clamping parts, and then place a number of cams 6 inside the limit frame 5 of the rotating disk 4. The steel pipe 3 is driven to pass through the cam 6 and the mobile platform 2 through the movement of the mobile platform 2. Then, the angle of the cam 6 is adjusted by rotating the rotating disk 4, and the cam 6 located at the top is fixed to the steel pipe 3. The mobile platform 2 is lifted so that the second upper cam 6 is located at the target installation position of the steel pipe 3, and the angle of the cam 6 is adjusted by the rotating disk 4, and the cam 6 is fixed. Repeat the above steps to complete the installation of the cam 6 shaft. During the installation process, the device in the present invention does not need to repeatedly put each cam 6 on the steel pipe 3, and there is no need to repeatedly lift the steel pipe 3, which improves the installation efficiency of the assembled cam 6 shaft.

[0031] A further optimized solution is provided, a lifting plate 7, and a lifting rod 8 is provided on the top surface of the lifting plate 7. The lifting rod 8 passes through the lifting plate 7 and is connected to a hydraulic cylinder 9. The end of the lifting rod 8 away from the lifting plate 7 is located in the inner cavity of the steel pipe 3 and is fixedly connected to an expansion block 10. The expansion block 10 is also provided with two expansion semi-rings 11 in the circumference. The two expansion semi-rings 11 are fixedly connected to the top surface of the lifting plate 7 through a connecting rod 12. The lifting rod 8 moves along its axis, so that the expansion block 10 is in sliding contact with the two expansion semi-rings 11, and the diameter of the two expansion semi-rings 11 is increased.

[0032] like Figure 2 and Figure 4 As shown, the movement of the lifting plate 7 can drive the lifting rod 8 and the connecting rod 12 to be driven, thereby adjusting the position of the expansion block 10 and the expansion half ring 11 to each cam 6 installation position in the inner cavity of the steel pipe 3, and the lifting rod 8 is driven by the hydraulic cylinder 9 to move up. The relative surfaces of the expansion block 10 and the two expansion half rings 11 are inclined surfaces. Therefore, when the expansion block 10 moves up relative to the two expansion half rings 11, the diameter of the two expansion half rings 11 is increased, and the diameter of the steel pipe 3 at the connection of the cam 6 is expanded, thereby realizing a fixed connection between the cam 6 and the steel pipe 3. After the connection is completed, the expansion block 10 is driven to move down by the lifting rod 8, the diameter of the two expansion half rings 11 is reduced, and the lifting plate 7 is used to move down a cam 6 height distance as a whole to install the next cam 6.

[0033] A further optimized solution is provided, wherein the first threaded rod 13 is threadedly connected to the movable platform 2, the axis of the first threaded rod 13 is parallel to the axis of the steel pipe 3, and a first connecting hole is provided on the top surface of the mounting platform 1. The end of the first threaded rod 13 away from the movable platform 2 passes through the first connecting hole and is fixedly connected to the output end of the first drive motor 22. The first drive motor 22 is fixedly connected to the bottom surface of the mounting platform 1. One end of the first guide column 14 is also fixedly connected to the bottom surface of the movable platform 2. The other end of the first guide column 14 passes through the mounting platform 1 and is in sliding contact with the mounting platform 1. A first guide cylinder 15 is also sleeved on the first guide column 14 and is slidably connected thereto. The first guide cylinder 15 is fixedly connected to the bottom surface of the mounting platform 1.

[0034] By turning on the first drive motor 22 to drive the first threaded rod 13 to rotate, the mobile platform 2 threadedly connected to the first threaded rod 13 moves along the axis of the threaded rod. At the same time, the first guide column 14 can ensure that the mobile platform 2 does not rotate with the first threaded rod 13. At the same time, the first guide cylinder 15 enhances the guiding performance of the first guide column 14.

[0035] A further optimized solution is provided, wherein the second threaded rod 16 is threadedly connected to the lifting plate 7, and the axis of the second threaded rod 16 and the axis of the first threaded rod 13 are parallel to each other. A second connecting hole is also provided on the mounting platform 1, and the end of the second threaded rod 16 away from the lifting plate 7 passes through the second connecting hole and is fixedly connected to the output end of the second drive motor 17. The second drive motor 17 is fixed to the top surface of the mounting platform 1, and one end of the second guide column 18 is also fixed to the bottom surface of the second drive platform. The other end of the second guide column 18 passes through the lifting plate 7 and is in sliding contact with the lifting plate 7. A second guide cylinder 19 is also sleeved and slidably connected on the second guide column 18, and the second guide cylinder 19 is fixed to the top surface of the movable plate.

[0036] By turning on the second drive motor 17 to drive the second threaded rod 16 to rotate, the lifting plate 7 threadedly connected to the second threaded rod 16 moves along the axial direction of the second threaded rod 16. At the same time, the second guide column 18 provided can ensure that the lifting plate 7 does not rotate with the second threaded rod 16, and the second guide cylinder 19 provided enhances the guiding property of the second guide column 18.

[0037] A further optimized solution is provided, wherein the inner wall of the ring gear 20 is fixedly connected to the circumferential outer wall of the rotating disk 4, the ring gear 20 is engaged with a gear 21, and one end of a rotating shaft (not shown in the figure) is connected to the center position of the bottom surface of the gear 21. A connecting hole is provided on the mounting platform 1, and the other end of the rotating shaft passes through the connecting hole and is fixedly connected to the output end of the driving motor 23, and the driving motor 23 is fixedly connected to the bottom surface of the mounting platform 1.

[0038] By turning on the driving motor 23 to drive the gear 21 to rotate, since the gear 21 is engaged with the ring gear 20, the annular gear disc is driven and further drives the rotating disc 4 to rotate, thereby achieving the angle adjustment of the cam 6 on the top surface of the annular disc.

[0039] A further optimized solution is that a plurality of protrusions 24 are fixed to the bottom surface of the rotating disk 4 , and an annular groove 25 is opened on the top surface of the mounting platform 1 , and the plurality of protrusions 24 are in sliding contact with the inner wall of the annular groove 25 .

[0040] like Figure 4 As shown, the protrusion 24 provided on the bottom surface of the rotating disk 4 is in sliding contact with the annular groove 25, preventing the rotating disk 4 from moving horizontally, thereby ensuring that the ring gear 20 and the gear 21 are always in meshing engagement.

[0041] To further optimize the solution, the clamping parts include a fixed V-frame 26 and a movable V-frame 27. A fixing hole 29 is opened at the center position of the top surface of the mobile platform 2. The fixed V-frame 26 is fixedly connected to the side wall of the fixing hole 29. The side wall of the movable V-frame 27 is fixedly connected to the output end of a telescopic cylinder 28. The telescopic cylinder 28 drives the movable V-frame 27 to move horizontally in the fixing hole 29. A baffle is fixedly connected to the top surface of the fixed V-frame 26, and the baffle is in contact with the steel pipe 3.

[0042] When installing the steel pipe 3, first put the end of the steel pipe 3 into the fixing hole 29 and turn on the telescopic cylinder 28. The telescopic cylinder 28 drives the movable V-frame 27 to move toward the fixed V-frame 26, so that the movable V-frame 27 and the fixed V-frame 26 clamp and fix the end of the steel pipe 3. The provided baffle can ensure that the end of the steel pipe 3 remains in contact during the downward movement of the mobile platform 2, thereby enhancing the fixing effect of the steel pipe 3.

[0043] As a further optimized solution, the support legs 30 and four support brackets are fixed to the bottom surface of the installation platform 1 , and the length of the support legs 30 is greater than the movable distance of the lifting plate 7 .

[0044] The length of the support legs 30 should be set to ensure that they do not interfere with the movement of the lifting plate 7.

[0045] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. An assembled camshaft press, characterized in that: include: Installation platform (1); A mobile platform (2), wherein a clamping piece is provided on the mobile platform (2), one end of a steel pipe (3) is detachably connected to the clamping piece, and the steel pipe (3) is located at the center of the bottom surface of the mobile platform (2); A rotating disk (4), the rotating disk (4) is rotatably connected to the center position of the top surface of the mounting platform (1), the top surface of the rotating disk (4) is fixedly connected to a limiting frame (5), a plurality of cams (6) are contained in the limiting frame (5), the inner holes of the plurality of cams (6) are overlapped with each other, the rotating disk (4) and the movable platform (2) are respectively provided with through holes, the two through holes and the inner holes of the plurality of cams (6) are overlapped with each other, and the movable platform (2) drives the steel pipe (3) to move and pass through the inner holes of the plurality of cams (6) and the two through holes; A lifting plate (7), the top surface of the lifting plate (7) is provided with a lifting rod (8), the lifting rod (8) passes through the lifting plate (7) and is connected to a hydraulic cylinder (9), the end of the lifting rod (8) away from the lifting plate (7) is located in the inner cavity of the steel pipe (3) and is fixed with an expansion block (10), and the expansion block (10) is also provided with two expansion semi-rings (11) in the circumferential direction, the two expansion semi-rings (11) are fixed to the top surface of the lifting plate (7) through a connecting rod (12), and the lifting rod (8) moves along its axis, so that the expansion block (10) is in sliding contact with the two expansion semi-rings (11), and the diameters of the two expansion semi-rings (11) are increased.

2. The assembled camshaft press machine according to claim 1, characterized in that: Also includes: A first threaded rod (13), the first threaded rod (13) and the movable platform (2) are threadedly connected, the axis of the first threaded rod (13) and the axis of the steel pipe (3) are parallel to each other, a first connecting hole is opened on the top surface of the mounting platform (1), one end of the first threaded rod (13) away from the movable platform (2) passes through the first connecting hole and is fixedly connected to the output end of the first drive motor (22), the first drive motor (22) is fixedly connected to the bottom surface of the mounting platform (1), one end of the first guide column (14) is also fixedly connected to the bottom surface of the movable platform (2), the other end of the first guide column (14) passes through the mounting platform (1) and is in sliding contact with the mounting platform (1), a first guide cylinder (15) is also sleeved on the first guide column (14) and is slidably connected, and the first guide cylinder (15) is fixedly connected to the bottom surface of the mounting platform (1).

3. The assembled camshaft press machine according to claim 2, characterized in that: Also includes: A second threaded rod (16), the second threaded rod (16) and the lifting plate (7) are threadedly connected, the axis of the second threaded rod (16) and the axis of the first threaded rod (13) are parallel to each other, and a second connecting hole is also provided on the mounting platform (1), the end of the second threaded rod (16) away from the lifting plate (7) passes through the second connecting hole and is fixedly connected to the output end of the second drive motor (17), the second drive motor (17) is fixedly connected to the top surface of the mounting platform (1), and the bottom surface of the mounting platform (1) is also fixedly connected to one end of a second guide column (18), the other end of the second guide column (18) passes through the lifting plate (7) and is in sliding contact with the lifting plate (7), and a second guide cylinder (19) is also sleeved on the second guide column (18) and slidably connected, and the second guide cylinder (19) is fixedly connected to the top surface of the lifting plate (7).

4. The assembled camshaft press machine according to claim 3, characterized in that: Also includes: A ring gear (20), the inner wall of the ring gear (20) is fixedly connected to the circumferential outer wall of the rotating disk (4), the ring gear (20) is meshed with a gear (21), one end of a rotating shaft is connected to the center position of the bottom surface of the gear (21), a connecting hole is opened on the mounting platform (1), the other end of the rotating shaft passes through the connecting hole and is fixedly connected to the output end of the driving motor (23), and the driving motor (23) is fixedly connected to the bottom surface of the mounting platform (1).

5. The assembled camshaft press machine according to claim 4, characterized in that: Also includes: A plurality of protrusions (24) are fixedly connected to the bottom surface of the rotating disk (4), and an annular groove (25) is provided on the top surface of the mounting platform (1). The plurality of protrusions (24) are in sliding contact with the inner wall of the annular groove (25).

6. The assembled camshaft press machine according to claim 5, characterized in that: The clamping member includes a fixed V-shaped frame (26) and a movable V-shaped frame (27). A fixing hole (29) is provided at the center position of the top surface of the movable platform (2). The fixed V-shaped frame (26) is fixedly connected to the side wall of the fixing hole (29). The side wall of the movable V-shaped frame (27) is fixedly connected to the output end of a telescopic cylinder (28). The telescopic cylinder (28) drives the movable V-shaped frame (27) to move laterally in the fixing hole (29). A baffle is fixedly connected to the top surface of the fixed V-shaped frame (26), and the baffle is in contact with the steel pipe (3).

7. The assembled camshaft press machine according to claim 6, characterized in that: Also includes: Support legs (30), four of the support legs (30) are fixed to the bottom surface of the mounting platform (1), and the length of the support legs (30) is greater than the movable distance of the lifting plate (7).

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