Turnover device for accurate grinding of outer circle of cam shaft

Abstract

The utility model relates to the technical field of camshaft machining equipment, in particular to a turning device for accurate grinding of an outer circle of a camshaft, which comprises a rack, a supporting seat arranged above the rack, a rotating shaft rotatably mounted in the supporting seat, a rotating disc arranged at the top of the supporting seat and connected with the rotating shaft, a bearing plate fixedly mounted on the rotating disc, and a support mounted on the bearing plate. A rotating wheel used for supporting the cam shaft is installed in the support, and a fastening assembly used for locking rotation of the cam shaft is arranged on the bearing plate. The rotating shaft can drive the rotating disc and the bearing plate to rotate, so that the cam shaft on the support is rotated, a numerical control grinding machine can continuously and accurately grind the outer circle of the cam shaft, time wasted by manual replacement of the placing position of the cam shaft is saved, and working efficiency is improved. The problem that in the prior art, the machining efficiency is too low is solved, the production cycle of a single cam shaft is greatly shortened, and therefore the production rate of the cam shaft is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of camshaft processing equipment, and specifically discloses a turning device for fine grinding of the outer circle of a camshaft. Background Art

[0002] The camshaft is an important component of a piston engine. Its function is to control the opening and closing of the valves. The main body of the camshaft is a cylindrical rod with the same length as the cylinder group. During the camshaft production process, a CNC grinder is required to perform fine grinding on the camshaft. Since the camshaft needs to be equipped with several cams during assembly, the accuracy of the camshaft outer circle fine grinding will directly affect the production quality of the camshaft.

[0003] The utility model patent with authorization announcement number: CN219359156U discloses a fine grinding camshaft fixture, including a workbench, four support columns are installed at the bottom of the workbench, a fixed plate is installed on the top of the workbench, a telescopic hydraulic cylinder is installed on the side of the fixed plate, an arc-shaped movable plate is installed at the output end of the telescopic hydraulic cylinder, and an annular movable plate is installed on the top of the arc-shaped movable plate.

[0004] In the disclosed patent technology, the workbench is placed in a specified position by a support column, the camshaft is placed on the support plate, the sliding sleeve is slid so that the wheel axle passes through the annular mounting plate, and the arc-shaped movable plate is driven to move by the telescopic hydraulic cylinder, so that the annular movable plate moves through the rotating rod, the connecting plate, the fixed block and the movable rod, and then the clamp is moved to fix the camshaft. At present, in the process of fine grinding of the outer circle of the camshaft, in order to better cooperate with the camshaft fixture, the CNC grinder first fine grinds one side of the camshaft, and then fine grinds the other side of the camshaft by turning the fixture; if the fixture in the above patent is used, the operator needs to manually replace it, thereby lengthening the production cycle of a single camshaft, making the processing efficiency of the camshaft too low, and seriously restricting the production rate of the camshaft. Utility Model Content

[0005] Aiming at the problem of low processing efficiency in the current camshaft outer circle fine grinding process, the utility model provides a turning device for camshaft outer circle fine grinding.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A turning device for fine grinding of the outer circle of a camshaft comprises a stand, a support seat is arranged above the stand, a rotating shaft is rotatably installed in the support seat, a rotating disk connected to the rotating shaft is arranged on the top of the support seat, a receiving plate is fixedly installed on the rotating disk, a bracket is installed on the receiving plate, a rotating wheel for supporting the camshaft is installed in the bracket, and a fastening component for locking the rotation of the camshaft is arranged on the receiving plate.

[0008] Preferably, a tabletop is provided on the top of the stand, a through slot is provided in the tabletop, a driving motor is installed in the through slot, and an output shaft of the driving motor is connected to the rotating shaft.

[0009] Preferably, a first bearing rotatably matched with the rotating shaft is installed on the support seat, a second bearing is mounted on the outer wall of the rotating shaft, a connecting plate is installed on the second bearing, and the connecting plate is fixedly connected to the table plate through a connecting frame.

[0010] Preferably, a shaft seat is provided at the bottom of the second bearing, the rotating shaft is sleeved inside the shaft seat, and the shaft seat is fixedly connected to the housing of the driving motor.

[0011] Preferably, a rubber pad for soft contact with the receiving plate is installed on the rotating disk, and a hexagon socket bolt for fixedly connecting the receiving plate and the rotating disk is arranged on the outer side of the rotating shaft.

[0012] Preferably, a transmission shaft is rotatably installed in the bracket, the outer wall of the transmission shaft is fixedly connected to the inner circumference of the rotating wheel, and at least two rotating wheels and transmission shafts are provided and the number is the same.

[0013] Preferably, a locking ring is provided at the left end of the transmission shaft, and the locking ring is fixedly connected to the bracket. A through hole is provided on the circumferential surface of the locking ring, and a pressure rod is installed in the through hole. One end of the pressure rod can be in contact with the outer wall of the transmission shaft, and a screw disk is fixedly installed on the other end of the pressure rod.

[0014] Preferably, an auxiliary wheel is mounted on the right end of the transmission shaft, and the diameter of the auxiliary wheel is the same as the diameter of the rotating wheel.

[0015] Preferably, the fastening assembly includes a right-angle rod fixedly connected to the receiving plate, a pressure rod is rotatably installed on the top of the right-angle rod, a screw rod is provided on the upper end of the pressure rod, and a pressure plate in contact with the outer wall of the camshaft is fixedly installed on the lower end of the pressure rod.

[0016] Preferably, a pulley is provided at the bottom of the platform, a foot base is fixedly installed on the outer side of the platform, and a foot rod is rotatably installed in the foot base.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The rotating shaft in the utility model can drive the rotating disk and the receiving plate to rotate, thereby rotating the camshaft on the bracket, so that the CNC grinder can continuously perform fine grinding on the outer circle of the camshaft, saving the time wasted by manually changing the placement position of the camshaft, solving the problem of low processing efficiency in the prior art, greatly shortening the production cycle of a single camshaft, and thus improving the production rate of the camshaft;

[0019] 2. The pressure rod and the pressure plate in the utility model can stably fix the camshaft on the bracket, and can effectively cooperate with the CNC grinder to perform fixed-point fine grinding and annular surface processing on the outer circle of the camshaft, thereby adapting to various operating requirements of the camshaft, expanding the adaptable fine grinding operation range of the overall device, and greatly improving the flexibility of the overall device;

[0020] 3. The utility model can achieve soft contact between the rotating disk and the receiving plate by arranging a rubber pad on the rotating disk. Since a certain vibration will be generated during the fine grinding of the outer circle of the camshaft, the rubber pad can effectively reduce the influence of the camshaft vibration on the rotating disk and improve the stability of the rotating disk. At the same time, it can also reduce the influence on the rotating shaft, thereby ensuring the accuracy of the fine grinding of the outer circle of the camshaft. Therefore, it has a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the utility model, the following will briefly introduce the drawings required for the description. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 The overall structure of the device of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 The overall structure of the device of the utility model is shown in FIG. Figure 1 ;

[0024] Figure 3 for Figure 2 A magnified view of the structure at center;

[0025] Figure 4 This is a schematic diagram of the through slot structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the support base structure of the utility model;

[0027] Figure 6 This is a schematic diagram of the installation structure of the rubber pad and hexagon socket bolt of the utility model;

[0028] Figure 7 This is a schematic diagram of the installation structure of the first bearing and the second bearing of the utility model;

[0029] Figure 8 This is a schematic diagram of the transmission shaft installation structure of the utility model;

[0030] Fig. 9 This is a schematic diagram of the locking ring structure of the utility model;

[0031] Fig.10 This is a schematic diagram of the fastening assembly structure of the utility model;

[0032] In the figure: 1. stand, 2. support seat, 3. rotating shaft, 4. rotating disk, 5. receiving plate, 6. bracket, 7. camshaft, 8. rotating wheel, 9. fastening assembly, 901. right-angle rod, 902. pressure rod, 903. screw rod, 904. pressure plate, 10. table, 11. through groove, 12. driving motor, 13. first bearing, 14. second bearing, 15. connecting plate, 16. connecting frame, 17. shaft seat, 18. rubber pad, 19. hexagon socket bolt, 20. transmission shaft, 21. locking ring, 22. through hole, 23. pressure rod, 24. screw disk, 25. auxiliary wheel, 26. pulley, 27. foot seat, 28. foot rod. DETAILED DESCRIPTION

[0033] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0034] This specific embodiment provides a camshaft outer cylindrical fine grinding turning device, including a stand 1, such as Figure 1-Figure 10 As shown, the platform 1 is formed by welding a plurality of longitudinal beams and a plurality of transverse beams to each other, and a table plate 10 is arranged on the top of the platform 1; a pulley 26 is arranged at the bottom of the platform 1, and four pulleys 26 are arranged and respectively installed at the four corners of the bottom of the platform 1, and the pulley 26 can not only support the platform 1, but also facilitate the operator to move the entire device; a foot seat 27 is fixedly installed on the outer side of the platform 1, and four foot seats 27 are arranged and respectively installed on the inner sides of the pulley 26, and a foot rod 28 is rotatably installed in the foot seat 27, and the foot rod 28 is threadedly connected to the foot seat 27. By screwing the foot rod 28, the operator can make the bottom surface of the foot rod 28 contact with the ground, thereby playing a role of auxiliary support, enhancing the stability of the platform 1, and ensuring the stability of the platform 1 when the flip device is in operation.

[0035] like Figure 4 As shown, a through groove 11 is opened in the table plate 10, and a driving motor 12 is installed in the through groove 11. The driving motor 12 is fixedly connected to the table plate 10 by bolts, and the output shaft of the driving motor 12 passes through the through groove 11 and protrudes upward; the output shaft of the driving motor 12 is connected to the rotating shaft 3 through the shaft seat 17, and the rotating shaft 3 and the output shaft of the driving motor 12 are both mounted inside the shaft seat 17. By setting the shaft seat 17, the output shaft of the driving motor 12 can be connected to the rotating shaft 3, so that the driving motor 12 drives the rotating shaft 3 to rotate.

[0036] like Figure 5-Figure 7 As shown, a second bearing 14 is arranged above the shaft seat 17, and the second bearing 14 is sleeved on the outer wall of the rotating shaft 3. A connecting plate 15 is installed on the upper surface of the second bearing 14, and the connecting plate 15 is fastened to the second bearing 14 by bolts. The connecting plate 15 is provided with an inner ring, and the diameter of the inner ring of the connecting plate 15 is larger than the diameter of the rotating shaft 3. A connecting frame 16 is fixedly connected to the outer side of the connecting plate 15. The connecting frame 16 is a folding plate structure, and a connecting block is fixedly installed on the upper surface of the connecting frame 16, and the connecting block is fixedly connected to the connecting plate 15. The lower surface of the connecting frame 16 is fixedly connected to the upper surface of the table 10 by bolts; through the matching structure of the second bearing 14, the connecting plate 15, and the connecting frame 16, not only can the support strength of the middle section of the rotating shaft 3 be ensured to avoid stress concentration, but also the stability of the rotating shaft 3 can be strengthened to ensure the stability of the rotating shaft 3 during the rotation process.

[0037] A support base 2 is fixedly installed on the upper surface of the table 10. The support base 2 is a C-shaped plate structure. The bottom of the support base 2 is fixedly connected to the table 10. A first bearing 13 is installed on the upper surface of the support base 2. The first bearing 13 is mounted on the outer wall of the rotating shaft 3. The first bearing 13 is arranged above the second bearing 14. By setting the first bearing 13, the rotating shaft 3 can be stably connected to the support base 2, thereby further enhancing the stability of the rotating shaft 3.

[0038] A rotating disk 4 is provided on the top of the support seat 2. The rotating disk 4 is fixedly connected to the upper end of the rotating shaft 3. The rotating shaft 3 can drive the rotating disk 4 to rotate together when rotating. A receiving plate 5 is fixedly installed above the rotating disk 4. The receiving plate 5 is fixedly connected to the rotating disk 4 by a hexagon socket bolt 19. There are multiple hexagon socket bolts 19 and they are evenly distributed around the outer side of the rotating shaft 3. A rubber pad 18 for soft contact with the receiving plate 5 is installed on the rotating disk 4. There are multiple rubber pads 18 and they are evenly distributed on the upper surface of the rotating disk 4. The rubber pad 18 is a buffer structure between the receiving plate 5 and the rotating disk 4, which can realize the shock absorption function, thereby ensuring the stability of the receiving plate 5.

[0039] like Figure 8-Figure 9 As shown, a bracket 6 is installed on the receiving plate 5, and the bracket 6 is composed of three vertically arranged strip profiles. A transmission shaft 20 is rotatably installed in the bracket 6. The transmission shaft 20 is provided with two and is evenly arranged inside the bracket 6. A rotating wheel 8 and an auxiliary wheel 25 are mounted on the transmission shaft 20. The rotating wheel 8 is arranged on the left side of the transmission shaft 20, and the auxiliary wheel 25 is arranged on the left side of the transmission shaft 20. Both sides of the rotating wheel 8 are surrounded by the bracket 6. The outer wall of the transmission shaft 20 is fixedly connected to the inner circumference of the rotating wheel 8, so that the transmission shaft 20 and the rotating wheel 8 form an integrated structure. The rotating wheel 8 and the auxiliary wheel 25 can be used to support the camshaft 7. The operator places the camshaft 7 on the rotating wheel 8 and the auxiliary wheel 25. When the outer cylindrical fine grinding of the camshaft 7 is performed, the camshaft 7 can be connected to an external rotating device. When the external rotating device drives the camshaft 7 to rotate, the rotating wheel 8 and the auxiliary wheel 25 can play an effective supporting role.

[0040] The diameter of the auxiliary wheel 25 is the same as that of the rotating wheel 8 , thereby ensuring that the camshaft 7 is stably placed on the rotating wheel 8 and the auxiliary wheel 25 .

[0041] The left end of the transmission shaft 20 extends out of the bracket 6, and a locking ring 2 is provided at the left end of the transmission shaft 20. The locking ring 2 is arranged on the left surface of the bracket 6. The locking ring 21 is fixedly connected with the bracket 6 by bolts. The locking ring 2 is provided with an inner ring surface, and the diameter of the inner ring surface is larger than the diameter of the transmission shaft 20. A plurality of through holes 22 are provided on the circumference of the locking ring 21. A pressure rod 23 is installed in the through hole 22. The through hole 22 is threadedly connected with the pressure rod 23, and the pressure rod 23 can be screwed in and out of the through hole 22; one end of the pressure rod 23 extending into the through hole 22 can contact the outer wall of the transmission shaft 20, and the other end of the pressure rod 23 extending out of the through hole 22 is fixedly installed with a screw disk 24. The operator rotates the screw disk 24 to make the pressure rod 23 tightly contact the transmission shaft 20, thereby stopping the rotation of the transmission shaft 20.

[0042] like Fig.10As shown, the receiving plate 5 is provided with a fastening assembly 9, which is arranged on one side of the bracket 6; the fastening assembly 9 includes a right-angle rod 901 fixedly connected to the upper surface of the receiving plate 5, and a threaded hole is provided at the horizontal end of the top of the right-angle rod 901, in which a pressure rod 902 is rotatably installed, and a screw rod 903 is provided at the upper end of the pressure rod 902, and the angle between the screw rod 903 and the pressure rod 902 is 90°, and a pressure plate 904 is fixedly installed at the lower end of the pressure rod 902, and the pressure plate 904 can contact the outer wall of the camshaft 7. By providing the fastening assembly 9, the pressure plate 904 can be closely attached to the outer wall of the camshaft 7, and the fastening assembly 9 can fix the camshaft 7 to the rotating wheel 8 and the auxiliary wheel 25, and cooperate with the pressure rod 23 to ensure that the camshaft 7 can be stably placed in the device.

[0043] The working principle of the utility model is:

[0044] Before the outer cylindrical fine grinding of the camshaft 7, the operator can push the stand 1 to the working area through the pulley 26, and screw the foot rod 28 to fix the stand 1 in the area so that it corresponds to the CNC grinder, and place it on the rotating wheel 8 and the auxiliary wheel 25.

[0045] If it is necessary to perform fixed-point fine grinding on the outer circle of the camshaft 7, the operator can use the screw rod 903 to make the pressure plate 904 close to the outer wall of the camshaft 7, and use the pressure rod 23 to tightly contact the outer wall of the camshaft 7, thereby ensuring that the camshaft 7 is fixedly placed on the rotating wheel 8 and the auxiliary wheel 25; the CNC grinder will perform fine grinding on the fixed point position on one side of the camshaft 7, and after the processing of this position is completed, the driving motor 12 will drive the rotating shaft 3 to rotate, thereby driving the rotating disk 4 and the receiving plate 5 to rotate together, so that the camshaft 7 rotates 180°, so that the other side of the camshaft 7 faces the CNC grinder, and the CNC grinder will perform fine grinding on the fixed point position on this side of the camshaft 7; during this period, due to the action of the pressure plate 904 and the pressure rod 23, the stability of the camshaft 7 can be ensured, thereby ensuring the accuracy of the outer circle fine grinding operation of the camshaft 7.

[0046] If it is necessary to fine-grind the entire annular surface of the outer circle of the camshaft 7, the pressure plate 904 and the pressure rod 23 can be moved away from the outer wall of the camshaft 7, and the camshaft 7 can be connected to an external rotating device, which drives the camshaft 7 to rotate. Through the rotation cooperation of the rotating wheel 8 and the auxiliary wheel 25, the camshaft 7 can be rotated in this device, so as to cooperate with the CNC grinder to fine-grind the outer annular surface of the camshaft 7; after the fine-grinding of one side of the camshaft 7 is completed, the camshaft 7 can be rotated 180° under the rotation of the rotating shaft 3, so as to carry out fine-grinding on the other side of the camshaft 7.

[0047] Compared with the prior art, the utility model has a rotating shaft 3 that can drive the rotating disk 4 and the receiving plate 5 to rotate, thereby rotating the camshaft 7 on the bracket 6, so that the CNC grinder can continuously perform fine grinding on the outer circle of the camshaft 7, saving time wasted by manually changing the placement position of the camshaft 7, solving the problem of low processing efficiency in the prior art, greatly shortening the production cycle of a single camshaft 7, and thus improving the production rate of the camshaft 7; and the pressing rod 23 and the pressure plate 904 can stably fix the camshaft 7 on the bracket 6, which can effectively cooperate with the CNC grinder to perform fixed-point fine grinding on the outer circle of the camshaft 7 The rubber pad 18 is arranged on the rotating disk 4 to realize the soft contact between the rotating disk 4 and the receiving plate 5. Since a certain vibration will be generated during the fine grinding operation of the outer circle of the camshaft 7, the rubber pad 18 can effectively reduce the influence of the vibration of the camshaft 7 on the rotating disk 4, improve the stability of the rotating disk 4, and also reduce the influence on the rotating shaft 3, thereby ensuring the accuracy of the fine grinding operation of the outer circle of the camshaft 7. In summary, the utility model has a very broad application prospect.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A turning device for fine grinding of camshaft outer circle, comprising a stand (1), characterized in that: A support base (2) is arranged above the stand (1), a rotating shaft (3) is rotatably installed in the support base (2), a rotating disk (4) connected to the rotating shaft (3) is arranged on the top of the support base (2), a receiving plate (5) is fixedly installed on the rotating disk (4), a bracket (6) is installed on the receiving plate (5), a rotating wheel (8) for supporting a camshaft (7) is installed in the bracket (6), and a fastening component (9) for locking the rotation of the camshaft (7) is arranged on the receiving plate (5).

2. A turning device for fine grinding of camshaft outer circle according to claim 1, characterized in that: A tabletop (10) is arranged on the top of the stand (1), a through slot (11) is provided in the tabletop (10), a driving motor (12) is installed in the through slot (11), and an output shaft of the driving motor (12) is connected to the rotating shaft (3).

3. A turning device for camshaft outer cylindrical fine grinding according to claim 1, characterized in that: The support seat (2) is provided with a first bearing (13) which is rotatably matched with the rotating shaft (3); the outer wall of the rotating shaft (3) is provided with a second bearing (14); the second bearing (14) is provided with a connecting plate (15); and the connecting plate (15) is fixedly connected to the table plate (10) via a connecting frame (16).

4. A turning device for fine grinding of camshaft outer circle according to claim 3, characterized in that: A shaft seat (17) is provided at the bottom of the second bearing (14), the rotating shaft (3) is sleeved inside the shaft seat (17), and the shaft seat (17) is fixedly connected to the outer shell of the driving motor (12).

5. The turning device for camshaft outer cylindrical fine grinding according to claim 1, characterized in that: The rotating disk (4) is provided with a rubber pad (18) for soft contact with the receiving plate (5), and the outer side of the rotating shaft (3) is provided with a hexagon socket bolt (19) for fixedly connecting the receiving plate (5) and the rotating disk (4).

6. The turning device for camshaft outer cylindrical fine grinding according to claim 1, characterized in that: A transmission shaft (20) is rotatably mounted in the bracket (6), and the outer wall of the transmission shaft (20) is fixedly connected to the inner circumference of the rotating wheel (8). The rotating wheel (8) and the transmission shaft (20) are both provided with at least two and the number is the same.

7. A turning device for fine grinding of camshaft outer circle according to claim 6, characterized in that: A locking ring (21) is provided at one left end of the transmission shaft (20), and the locking ring (21) is fixedly connected to the bracket (6). A through hole (22) is provided on the circumference of the locking ring (21), and a pressure rod (23) is installed in the through hole (22). One end of the pressure rod (23) can contact the outer wall of the transmission shaft (20), and a screw disk (24) is fixedly installed on the other end of the pressure rod (23).

8. The turning device for camshaft outer cylindrical fine grinding according to claim 6, characterized in that: An auxiliary wheel (25) is sleeved on the right end of the transmission shaft (20), and the diameter of the auxiliary wheel (25) is the same as the diameter of the rotating wheel (8).

9. The turning device for camshaft outer cylindrical fine grinding according to claim 1, characterized in that: The fastening assembly (9) comprises a right-angle rod (901) fixedly connected to the receiving plate (5), a pressure rod (902) being rotatably mounted on the top of the right-angle rod (901), a screw rod (903) being disposed at the upper end of the pressure rod (902), and a pressure plate (904) being fixedly mounted at the lower end of the pressure rod (902) and being in contact with the outer wall of the camshaft (7).

10. The turning device for camshaft outer cylindrical fine grinding according to claim 1, characterized in that: A pulley (26) is provided at the bottom of the platform (1), a foot seat (27) is fixedly installed on the outer side of the platform (1), and a foot rod (28) is rotatably installed in the foot seat (27).

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