Camshaft deep hole processing device

Abstract

The present invention relates to the technical field of camshaft processing, and discloses a camshaft deep hole processing device, including a machine base, a circumferential clamping assembly is arranged on the machine base, the circumferential clamping assembly includes a slide rail, a clamping cylinder, a toothed disc, a rotating shaft, a gear, and a sleeve, a clamping block is arranged on the clamping cylinder, a sliding hole is arranged on the toothed disc, a connecting rod is arranged in the sliding hole, the connecting rod is connected to the clamping block, a connecting key is arranged on the rotating shaft, the gear is meshed with the toothed disc, the gear is connected to the sleeve, the sleeve is sleeved outside the rotating shaft, a keyway is arranged on the inner wall of the sleeve, the sleeve is rotatably connected to the ear plate, and the ear plate is connected to the clamping cylinder. The present invention can limit and fix the camshaft in two directions, ensure the stability of the position of the camshaft during processing, avoid circumferential rotation and axial movement, ensure the clamping effect, and has strong practicality and adaptability.

Description

Technical Field

[0001] The invention relates to the technical field of camshaft processing, and in particular to a camshaft deep hole processing device. Background Art

[0002] Deep hole processing of slender shaft parts has always been a difficult point in machining. The camshaft is an important component of the piston engine. Its function is to control the opening and closing of the valve. As a special slender shaft part, the camshaft must be processed with a through hole on its axis for the flow of lubricating oil. The existing deep hole processing device is generally a horizontal single-station structure. When processing the camshaft, there is a disadvantage of poor clamping effect. During processing, it is easy to produce waste due to unstable fixation of the workpiece. In addition, the existing deep hole processing device cannot adjust the clamping position and cannot adapt to camshafts of different lengths and different cam distributions. When processing camshafts of different models, the corresponding clamping tooling must be replaced, and the practicality and versatility are poor. Therefore, based on the above problems, it is necessary to improve. Summary of the invention

[0003] In view of the technical problems existing in the prior art, the present invention provides a camshaft deep hole processing device.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a camshaft deep hole processing device, comprising a machine base, a circumferential clamping assembly is arranged on the machine base, the circumferential clamping assembly comprises a slide rail, a clamping cylinder, a toothed disc, a rotating shaft, a gear, and a sleeve, the slide rail is fixed on the machine base, the clamping cylinder is slidably matched with the slide rail, the clamping cylinder is positioned by a positioning top screw, a plurality of clamping blocks extending radially thereof are evenly arranged on the clamping cylinder along the circumference, the clamping blocks are slidably matched with the clamping cylinder, the toothed disc is ... The cylinder rotates together, and a sliding hole is provided on the toothed disc corresponding to each clamping block. A connecting rod is slidably provided in the sliding hole, and the connecting rod is connected to the corresponding clamping block. The toothed disc is provided with meshing teeth, and the rotating shaft is rotatably connected to the machine base. The rotating shaft is provided with a connecting key extending along its axial direction. The gear meshes with the toothed disc, and the gear is connected to the sleeve. The sleeve is sleeved outside the rotating shaft, and a keyway matching the connecting key is provided on the inner wall of the sleeve. The sleeve is rotatably connected to the ear plate, and the ear plate is connected to the clamping cylinder.

[0005] When the circumferential clamping assembly clamps the camshaft, the camshaft is passed through the clamping cylinder and the gear disc, and then the driving motor is started, the shaft rotates, and under the action of the connecting key, the sleeve and the gear rotate, and the gear disc is driven to rotate. When the gear disc rotates, the clamping block is driven to move into the clamping cylinder through the connecting rod until the workpiece is clamped and fixed.

[0006] The toothed disc is rotationally connected to the clamping cylinder. After clamping, the driving motor is turned off, the rotating shaft no longer rotates, and the gear positions the toothed disc circumferentially through meshing teeth.

[0007] The clamping cylinder is moved along the slide rail and positioned by a pair of positioning screws to adjust the clamping position. During adjustment, the sleeve slides axially along the rotating shaft, and the toothed disc and the gear move synchronously with the clamping cylinder. Therefore, the sleeve and the rotating shaft always maintain a key connection, and the toothed disc and the gear can always maintain a meshing state, without affecting the rotational transmission between the rotating shaft and the sleeve, and the gear and the toothed disc.

[0008] Preferably, a drill rod is provided on the machine base, the drill rod is connected to a drilling motor, the drilling motor is fixed on a slide, and the slide is connected to the machine base through a feeding mechanism.

[0009] Preferably, the clamping cylinder is fixed on a connecting seat, and the connecting seat is provided with a clamping groove 1 that matches with the slide rail.

[0010] A positioning top screw 1 is arranged on the side wall of the clamping slot 1, and the connecting seat is clamped on the slide rail through the clamping slot 1 and slidably cooperates with the slide rail; the ear plate is fixed on the connecting seat.

[0011] Preferably, the slide rail is provided with an inverted T-shaped slide groove, and the connecting seat is provided with an inverted T-shaped slider that slides with the inverted T-shaped slide groove. The inverted T-shaped slide groove and the inverted T-shaped slider are provided to limit the connecting seat and the clamping cylinder in the vertical direction, so as to prevent the clamping cylinder from being displaced in the vertical direction, thereby causing the camshaft to be offset relative to the drill rod or affecting the straightness of the drill hole.

[0012] Preferably, a support seat is provided on the machine base, and a V-shaped support groove is provided on the support seat. Before the clamping assembly clamps the camshaft, the camshaft is supported by the V-shaped support groove on the support seat.

[0013] Preferably, the support seat is provided with a second card slot and a second positioning screw which are slidably matched with the slide rail in the vertical direction. The second card slot extends in the vertical direction, and the second positioning screw is arranged on the side wall of the second card slot. By adjusting the vertical position of the second card slot on the slide rail and tightening the second positioning screw to position the support seat, camshafts with different outer diameters can be supported.

[0014] Preferably, an axial limit assembly is provided on the support seat, and the axial limit assembly includes a side plate, an axial limit block, a connecting plate one and a connecting plate two. The side plate is connected to the support seat, and a sliding hole two and an arc-shaped sliding hole three extending in the vertical direction are provided on the side plate. The sliding hole three is connected to the middle portion of the sliding hole two, and an upper sliding rod is connected to the middle portion of the axial limit block, and a lower sliding rod is connected to the bottom. Both the upper sliding rod and the lower sliding rod are slidably matched with the sliding hole two. One end of the connecting plate one is connected to the side plate through a connecting shaft, and the other end is rotatably connected to one end of the connecting plate two through a pin shaft, and one end of the connecting plate two is connected to the lower sliding rod.

[0015] When the support seat supports the camshaft, the axial limit blocks are located on both sides of the V-shaped support groove and will not interfere with the position of the camshaft; after the circumferential clamping assembly clamps and positions the camshaft, the axial limit assembly is used to limit the camshaft axially to prevent the camshaft from axial movement, thereby further ensuring the clamping effect.

[0016] The working principle of the axial limit assembly is as follows: the connecting shaft rotates under the drive of the driving motor, and under the action of connecting plate one and connecting plate two, the upper slide bar and the lower slide bar slide along slide hole two and drive the axial limit block to move upward (in this process, the angle between connecting plate one and connecting plate two changes, and connecting plate one and connecting plate two form a connecting rod structure). When the upper slide bar moves to the top of slide hole two, the lower slide bar just moves to the connection between slide hole two and slide hole three, and the upper slide bar no longer moves upward, and the connecting shaft continues to rotate, and drives the lower slide bar to rotate around the upper slide bar through connecting plate one and connecting plate two, thereby causing the axial limit block to open outward until the axial limit block abuts against the side of the cam on the camshaft, and the axial limit blocks on both sides abut against the side of the cam to realize the axial limit of the camshaft.

[0017] The axial limit of the camshaft with different cam spacing can be achieved by adjusting the height of the support seat, and then adjusting the angle of the connecting shaft during the limit and the horizontal position of the support seat along the slide rail. In actual use, the above-mentioned related parameters can be adjusted when changing the production model.

[0018] The present invention also includes other components that enable a camshaft deep hole processing device to be used normally, which are all conventional technical means in the art. In addition, the devices or components not limited in the present invention all adopt conventional technical means in the art.

[0019] The present invention can limit and fix the camshaft in two directions by cooperating with the circumferential clamping assembly and the axial limiting assembly, thereby ensuring the stability of the position of the camshaft during processing, preventing it from circumferential rotation and axial movement, ensuring the clamping effect, and then ensuring the processing accuracy. In addition, the present invention can be applied to gear shafts of different lengths and different cam distributions, and has strong practicality and adaptability, which greatly improves the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of this embodiment.

[0021] Figure 2 yes Figure 1 Side view of the mid-circumferential clamp assembly.

[0022] Figure 3 yes Figure 2 Enlarged schematic diagram at point A in the middle.

[0023] Figure 4 yes Figure 1 Front view of the central axial limit assembly.

[0024] Figure 5 yes Figure 1 The front view of the central axial limit assembly in another state.

[0025] Figure 6 yes Figure 5 Side view of.

[0026] Figure 7 yes Figure 6 Schematic diagram of the support block.

[0027] In the figure: 1. slide rail; 2. clamping cylinder; 3. toothed disc; 4. rotating shaft; 5. gear; 6. sleeve; 7. positioning screw 1; 8. clamping block; 9. sliding hole 1; 10. connecting rod; 11. connecting key; 12. ear plate; 13. camshaft; 14. drill rod; 15. connecting seat; 16. inverted T-shaped slider; 17. supporting seat; 18. V-shaped supporting groove; 19. slot 2; 20. positioning screw 2; 21. side plate; 22. axial limit block; 23. connecting plate 1; 24. connecting plate 2; 25. sliding hole 2; 26. sliding hole 3; 27. upper sliding rod; 28. lower sliding rod; 29. ​​connecting shaft; 30. pin shaft. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below 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 creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 present invention can be understood according to specific circumstances.

[0031] Example

[0032] See also Figure 1-7 A camshaft deep hole processing device includes a machine base, a circumferential clamping assembly is provided on the machine base, and the circumferential clamping assembly includes a slide rail 1, a clamping cylinder 2, a toothed disc 3, a rotating shaft 4, a gear 5, and a sleeve 6. The slide rail 1 is fixed to the machine base, and the clamping cylinder 2 is slidably matched with the slide rail 1. The clamping cylinder 2 is positioned by a positioning top screw 7. A plurality of clamping blocks 8 extending radially are evenly provided on the clamping cylinder 2 along the circumference. The clamping blocks 8 are slidably matched with the clamping cylinder 2, and the toothed disc 3 is rotatably matched with the clamping cylinder 2. Each clamp on the toothed disc 3 corresponds to The holding blocks 8 are respectively provided with sliding holes 9, and connecting rods 10 are slidably provided in the sliding holes 9. The connecting rods 10 are connected to the corresponding clamping blocks 8. The toothed disc 3 is provided with meshing teeth. The rotating shaft 4 is rotatably connected to the machine base. The rotating shaft 4 is provided with a connecting key 11 extending along its axial direction. The gear 5 is meshed with the toothed disc 3. The gear 5 is connected to the sleeve 6. The sleeve 6 is sleeved outside the rotating shaft 4. The inner wall of the sleeve 6 is provided with a keyway matching the connecting key 11. The sleeve 6 is rotatably connected to the ear plate 12, and the ear plate 12 is connected to the clamping tube 2.

[0033] In this embodiment, the toothed disc 3 is annular and is coaxially arranged with the clamping cylinder 2. The annular toothed disc is connected to the clamping cylinder 2 to facilitate the penetration of the camshaft to be clamped; four clamping blocks 8 are provided on the clamping cylinder 2, and a through hole is provided corresponding to each clamping block 8. The clamping block 8 passes through the through hole and slides radially with the through hole along the clamping cylinder 2; a sliding hole 9 extends inward from the edge of the annular toothed disc; and the rotating shaft 4 is connected to a driving motor.

[0034] When the circumferential clamping assembly clamps the camshaft, the camshaft is passed through the clamping tube 2 and the gear plate, and then the driving motor is started, the shaft 4 rotates, and under the action of the connecting key 11, the sleeve 6 and the gear 5 rotate, and drive the gear plate 3 to rotate. When the gear plate 3 rotates, the clamping block 8 is driven to move into the clamping tube 2 through the connecting rod 10 until the workpiece is clamped and fixed.

[0035] The toothed disc is rotationally connected to the clamping cylinder. After clamping, the driving motor is turned off, the rotating shaft no longer rotates, and the gear positions the toothed disc circumferentially through meshing teeth.

[0036] The clamping position can be adjusted by moving the clamping cylinder 2 along the slide rail 1 and positioning the clamping cylinder 2 through a pair of positioning screws. During adjustment, the sleeve 6 slides axially along the rotating shaft 4, and the toothed disc 3 and the gear 5 move synchronously with the clamping cylinder 2. Therefore, the sleeve 6 and the rotating shaft 4 always maintain a key connection, and the toothed disc 3 and the gear 5 can always maintain a meshing state, without affecting the rotational transmission between the rotating shaft 4 and the sleeve 6, and the gear 5 and the toothed disc 3.

[0037] This embodiment is provided with two clamping assemblies. When in use, the clamping position can be flexibly adjusted according to the length of the camshaft 13 and the position of the cam thereon. The two clamping assemblies can clamp the two ends of the camshaft respectively to ensure the balance and stability of the camshaft. The two clamping assemblies adopt a linkage structure, and the clamping force is synchronously controlled by the rotating shaft 4, which can ensure the straightness of the camshaft and thus ensure the processing accuracy. In actual use, multiple clamping assemblies can be provided according to the use requirements.

[0038] A drill rod 14 is provided on the machine base, and the drill rod 14 is connected to a drilling motor. The drilling motor is fixed on a slide, and the slide is connected to the machine base through a feeding mechanism.

[0039] The drill rod 14 is provided with a drill bit for cutting, and the drill rod 14 and the drill bit are both prior art and will not be described in detail. The feeding mechanism is used to realize the feeding of the drill rod 14 along the axial direction of the camshaft, and a linear module in the prior art can be selected.

[0040] The clamping cylinder 2 is fixed on the connecting seat 15 , and the connecting seat 15 is provided with a clamping groove 1 that matches with the slide rail 1 .

[0041] The positioning screw 1 7 is arranged on the side wall of the clamping slot 1, and the connecting seat 15 is clamped on the slide rail 1 through the clamping slot 1 and slidably cooperates with the slide rail 1; the ear plate is fixed on the connecting seat.

[0042] The slide rail 1 is provided with an inverted T-shaped slide groove, and the connecting seat 15 is provided with an inverted T-shaped slider 16 that slides with the inverted T-shaped slide groove. The inverted T-shaped slide groove and the inverted T-shaped slider 16 are provided to limit the connecting seat 15 and the clamping cylinder 2 in the vertical direction, so as to prevent the clamping cylinder 2 from being displaced in the vertical direction, thereby causing the camshaft to be offset relative to the drill rod 14 or affecting the straightness of the drill hole.

[0043] The base is provided with a support seat 17, and the support seat 17 is provided with a V-shaped support groove 18. Before the clamping assembly clamps the camshaft, the camshaft is supported by the V-shaped support groove 18 on the support seat 17.

[0044] The support seat 17 is provided with a second clamping groove 19 and a second positioning screw 20 that are slidably matched with the slide rail 1 in the vertical direction. In this embodiment, the second clamping groove 19 extends in the vertical direction, and the second positioning screw 20 is provided on the side wall of the second clamping groove 19. By adjusting the vertical position of the second clamping groove 19 on the slide rail 1 and tightening the second positioning screw 20 to position the support seat 17, camshafts with different outer diameters can be supported.

[0045] The support seat 17 is provided with an axial limit assembly, which includes a side plate 21, an axial limit block 22, a connecting plate 1 23 and a connecting plate 24. The side plate 21 is connected to the support seat 17. The side plate 21 is provided with a sliding hole 25 extending in the vertical direction and an arc-shaped sliding hole 3 26. The sliding hole 3 26 is connected to the middle part of the sliding hole 25. The middle part of the axial limit block 22 is connected to an upper sliding rod 27, and the bottom is connected to a lower sliding rod 28. Both the upper sliding rod 27 and the lower sliding rod 28 are slidably matched with the sliding hole 25. One end of the connecting plate 1 23 is connected to the side plate 21 through a connecting shaft 29, and the other end is rotatably connected to one end of the connecting plate 24 through a pin 30. One end of the connecting plate 24 is connected to the lower sliding rod 28.

[0046] In this embodiment, the support seat 17 is located between two circumferential clamping assemblies, and two side plates 21 are provided on the left and right sides of the support seat 17. The two side plates 21 on each side are respectively located on the front and rear sides of the camshaft, and each side plate 21 is correspondingly provided with an axial limit block. The two axial limit blocks on the left and the two axial limit blocks on the right are connected by a horizontal plate at the bottom, and the connecting shaft is connected to a driving motor.

[0047] When the support seat supports the camshaft, the axial limit blocks are located on both sides of the V-shaped support groove 18 and will not interfere with the position of the camshaft; after the circumferential clamping assembly clamps and positions the camshaft, the axial limit assembly is used to limit the camshaft axially to prevent the camshaft from axial movement, thereby further ensuring the clamping effect.

[0048] The working principle of the axial limit assembly is as follows: the connecting shaft rotates under the drive of the driving motor, and under the action of connecting plate 1 23 and connecting plate 24, the upper slide bar 27 and the lower slide bar 28 slide along the slide hole 25 and drive the axial limit block to move upward (in this process, the angle between connecting plate 1 and connecting plate 2 changes, and connecting plate 1 and connecting plate 2 form a connecting rod structure). When the upper slide bar 27 moves to the top of the slide hole 2, the lower slide bar 28 just moves to the connection between the slide hole 25 and the slide hole 3 26, and the upper slide bar 27 no longer moves upward, and the connecting shaft continues to rotate, and drives the lower slide bar 28 to rotate around the upper slide bar 27 through the connecting plate 1 23 and connecting plate 24, thereby causing the axial limit block to open outward until the axial limit block abuts against the side of the cam on the camshaft, and the axial limit blocks on both sides abut against the side of the cam to realize the axial limit of the camshaft.

[0049] The axial limit of the camshaft with different cam spacings can be achieved by adjusting the height of the support seat 17, and then adjusting the angle of the connecting shaft during the limit and adjusting the horizontal position of the support seat along the slide rail. In actual use, the above-mentioned related parameters can be adjusted when changing the production model.

[0050] The circumferential clamping assembly centers and fixes the camshaft in the circumferential direction, and the axial limiting assembly limits the camshaft in the axial direction. The two work together to ensure the stability of the camshaft position during processing, prevent it from circumferential rotation and axial movement, and ensure processing accuracy. In addition, both the circumferential clamping assembly and the axial limiting assembly can be applied to gear shafts of different lengths and different cam distributions, with strong practicality and adaptability, greatly improving the convenience of use.

[0051] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A camshaft deep hole processing device, comprising a machine base, characterized in that: The machine base is provided with a circumferential clamping assembly, and the circumferential clamping assembly includes a slide rail, a clamping cylinder, a toothed disk, a rotating shaft, a gear, and a sleeve. The slide rail is fixed to the machine base, and the clamping cylinder is slidably matched with the slide rail. The clamping cylinder is positioned by a positioning top screw. A plurality of clamping blocks extending along its radial direction are evenly arranged on the clamping cylinder along the circumference. The clamping block is slidably matched with the clamping cylinder, and the toothed disk is rotatably matched with the clamping cylinder. A sliding hole is respectively provided on the toothed disk corresponding to each clamping block, and a connecting rod is slidably provided in the sliding hole. The connecting rod is connected to the corresponding clamping block, and meshing teeth are provided on the toothed disk. The rotating shaft is rotatably connected to the machine base, and a connecting key extending along its axial direction is provided on the rotating shaft. The gear meshes with the toothed disk, and the gear is connected to the sleeve. The sleeve is sleeved outside the rotating shaft, and a keyway matching the connecting key is provided on the inner wall of the sleeve. The sleeve is rotatably connected to the ear plate, and the ear plate is connected to the clamping cylinder; The machine base is provided with a support seat, and the support seat is provided with a V-shaped support groove; The support seat is provided with an axial limit assembly, and the axial limit assembly includes a side plate, an axial limit block, a connecting plate 1 and a connecting plate 2. The side plate is connected to the support seat, and a sliding hole 2 and an arc-shaped sliding hole 3 extending in the vertical direction are opened on the side plate. The sliding hole 3 is connected to the middle part of the sliding hole 2. The middle part of the axial limit block is connected to an upper sliding rod, and the bottom is connected to a lower sliding rod. Both the upper sliding rod and the lower sliding rod are slidably matched with the sliding hole 2. One end of the connecting plate 1 is connected to the side plate through a connecting shaft, and the other end is rotatably connected to one end of the connecting plate 2 through a pin shaft, and one end of the connecting plate 2 is connected to the lower sliding rod.

2. A camshaft deep hole processing device according to claim 1, characterized in that: A drill rod is arranged on the machine base, the drill rod is connected with a drilling motor, the drilling motor is fixed on a slide, and the slide is connected to the machine base through a feeding mechanism.

3. A camshaft deep hole processing device according to claim 1, characterized in that: The clamping cylinder is fixed on the connecting seat, and the connecting seat is provided with a clamping groove 1 which matches with the slide rail.

4. A camshaft deep hole machining device according to claim 3, characterized in that: An inverted T-shaped sliding groove is arranged on the slide rail, and an inverted T-shaped sliding block which is slidably matched with the inverted T-shaped sliding groove is arranged on the connecting seat.

5. The camshaft deep hole processing device according to claim 1, characterized in that: The support seat is provided with two clamping grooves and two positioning top screws matched with the slide rail.

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