Anti-swing device for camshaft machining

Abstract

This invention relates to the field of camshaft machining support devices, and discloses a camshaft machining anti-sway device, comprising: a base; a top support assembly slidably disposed on the base along a first direction; a drive assembly slidably disposed on the base along a second direction, the drive assembly including a first drive member and a transmission assembly disposed between the first drive member and the top support assembly; a limiting assembly fixedly installed on the base, the limiting assembly being provided with a toggle member, the toggle member being used to toggle the limiting assembly, causing the limiting assembly to release its unidirectional limiting of the top support assembly; the drive assembly further includes a second drive member, the first drive member and the second drive member being respectively disposed on both sides of the base, the second drive member being used to toggle the toggle member. This invention addresses the problem in the prior art that when a grinding mechanism feeds and grinds a camshaft, the camshaft inevitably sways, and the longer the camshaft being ground, the greater the sway amplitude, which significantly affects machining accuracy.

Description

Technical Field

[0001] This invention relates to the field of camshaft machining support devices, and more particularly to a camshaft machining anti-sway device. Background Technology

[0002] The main body of the camshaft is a cylindrical rod with a length approximately the same as that of the cylinder bank. Several cams are fitted on it to control the on / off state of the fuel injection pump or the opening and closing of the intake and exhaust valves. It is widely used in gasoline engines or diesel engines.

[0003] Since the machining accuracy of the camshaft has a significant impact on the engine's performance, the camshaft is ground with high precision using a CNC grinding machine.

[0004] In the existing technology, most grinding machines include a base, a grinding mechanism and a clamping mechanism. The clamping mechanism holds the camshaft firmly and drives the camshaft to rotate. Then, the grinding mechanism performs high-precision grinding on the camshaft.

[0005] Due to the mechanical backlash of the clamping mechanism, the camshaft will inevitably wobble when the grinding mechanism feeds the camshaft. The longer the camshaft being ground, the greater the wobble amplitude, which significantly affects the machining accuracy. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a camshaft anti-sway device to solve the problem that in the prior art, when the grinding mechanism feeds the camshaft, the camshaft will inevitably wobble, and the longer the camshaft being ground, the greater the sway amplitude, which will affect the machining accuracy.

[0007] The present invention solves the above-mentioned technical problems through the following technical means:

[0008] A camshaft machining anti-sway device, comprising:

[0009] Base;

[0010] A top support assembly is slidably mounted on the base along a first direction to support the camshaft;

[0011] A driving assembly is slidably disposed on the base along a second direction. The driving assembly includes a first driving member, which is used to drive the top support assembly to move along the first direction.

[0012] A transmission assembly is disposed between the first driving member and the top support assembly, for elastically connecting the top support assembly to the first driving member;

[0013] A limiting component is fixedly installed on the base and is used to limit the top support component in one direction. The limiting component is provided with a toggle member, which is used to toggle the limiting component to release the one-way limitation on the top support component.

[0014] The driving assembly further includes a second driving member. The first driving member and the second driving member are respectively disposed on both sides of the base. The second driving member is used to actuate the actuating member.

[0015] Furthermore, multiple connecting rods are fixedly connected between the first driving member and the second driving member. The base has multiple first through holes, and the connecting rods are slidably inserted into the first through holes. A connector is provided on the side of the first driving member away from the second driving member. The connector is used to connect to an external driving source. The base has a second through hole, and a first sliding rod is slidably inserted into the second through hole. The base is slidably mounted on the first sliding rod through the second through hole.

[0016] Furthermore, the top support assembly includes a base plate and a support frame fixedly disposed at both ends of the base plate. The base plate is provided with a mounting post, and the base plate is provided with a mounting hole that penetrates the base plate and the support frame. The mounting post is inserted into the mounting hole.

[0017] Furthermore, the transmission assembly includes a first connecting block, a second connecting block, and a first spring. The first spring is connected between the first connecting block and the second connecting block. A first hinge seat is provided on the base plate. The first connecting block is rotatably connected to the first hinge seat. A second hinge seat is provided on the first driving member. The second connecting block is rotatably connected to the second hinge seat.

[0018] Furthermore, the first connecting block is provided with a first rod and a first sleeve, the second connecting block is provided with a second rod and a second sleeve, and multiple first springs are provided, with the multiple first springs respectively sleeved on the first rod and the second rod. The free end of the first rod is slidably inserted into the second sleeve, and the free end of the second rod is slidably inserted into the first sleeve.

[0019] Furthermore, the limiting component includes a mounting block, which is fixedly connected to the base. A first slot is provided on the side of the mounting block near the substrate. A limiting head is slidably installed in the first slot. A guide surface is provided on the lower surface of the end of the limiting head. A second sliding rod is fixedly connected to both sides of the tail of the limiting head. A third through hole is provided on the mounting block. The second sliding rod is inserted into the third through hole. A second spring is sleeved on the second sliding rod. One end of the second spring is connected to the bottom wall of the first slot, and the other end is connected to the limiting head.

[0020] Furthermore, the mounting block has through slots on both sides of the first slot, and a support rod is fixedly connected to the base. The support rod is inserted into the through slot. The mounting block has fixing holes on both sides, which communicate with the through slot. A fixing bolt is threaded into the fixing hole, and the end of the fixing bolt abuts against the support rod.

[0021] Furthermore, the actuating component is rotatably mounted on the mounting block. The actuating component includes a first plate and a second plate. The first plate and the second plate are integrally formed. A second slot is provided on the first plate corresponding to the position of the second slide rod. The second slide rod is located in the second slot. A stop block is fixedly connected to the free end of the second slide rod. The first plate is located between the stop block and the mounting block. The second plate is located between the second driving component and the base. The second driving component can drive the first plate to rotate by pushing the second plate.

[0022] Furthermore, a shaft hole is provided at the connection between the first plate and the second plate, and a third hinge seat is provided on the side of the mounting block near the second driving member. The actuating member is rotatably connected to the third hinge seat through the shaft hole.

[0023] Furthermore, a third spring is fitted onto the mounting post, with one end of the third spring fixedly connected to the base plate and the other end fixedly connected to the base.

[0024] The beneficial effects of this invention are:

[0025] 1. This invention, by setting a base, a top support assembly, and a drive assembly, allows the anti-sway device to move through the drive assembly when the grinding mechanism moves axially, thereby causing the top support assembly to move along with the grinding position. When the grinding mechanism is feeding and grinding, the top support assembly can be moved upward through the drive assembly and the transmission assembly to support the camshaft. When the grinding mechanism is grinding the camshaft, it provides support force, reduces the camshaft runout, and ensures machining accuracy.

[0026] 2. By setting a limiting component, the present invention can limit the top support component in one direction, thereby preventing the top support component from moving downward during the grinding process of the grinding mechanism, which would reduce the support effect.

[0027] 3. The present invention sets up a second driving member and a toggle member. The second driving member pushes the second plate to drive the first plate to rotate. The first plate pushes the stop block to pull the limiting head into the first slot, thereby releasing the limiting of the substrate. There is no need to manually or additionally set the driving source to change the trigger toggle member, so that the top support assembly can automatically reset. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of an embodiment of the anti-sway device for camshaft processing according to the present invention;

[0029] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the anti-sway device for camshaft processing according to the present invention;

[0030] Figure 3 This is a schematic diagram of the structure of the support component, transmission component and drive component in an embodiment of the anti-sway device for camshaft processing according to the present invention;

[0031] Figure 4 This is a schematic diagram of the base and limiting component structure in an embodiment of the anti-sway device for camshaft processing according to the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of a camshaft grinding machine in the prior art;

[0033] Among them, the base 1, the first through hole 11, the first slide rod 12, the mounting post 13, the third spring 131, the second through hole 14, the support rod 15, the grinding mechanism 21, the clamping mechanism 22, the headstock 221, the tailstock 222, the base 23, the worktable 231, the base plate 31, the mounting hole 311, the first hinge seat 312, the support frame 32, the first driving member 41, the second hinge seat 411, the second driving member 42, the connecting rod 43, the connecting member 44, and the first Connecting block 51, first rod 511, first sleeve 512, second connecting block 52, second rod 521, second sleeve 522, first spring 53, mounting block 6, first slot 61, limiting head 62, guide surface 621, second sliding rod 622, stop block 623, second spring 64, through slot 65, fixing hole 66, fixing bolt 67, third hinge seat 68, actuating element 7, first plate 71, second slot 711, second plate 72. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1-5 As shown, a camshaft machining anti-sway device of the present invention includes:

[0036] Base 1; Base 1 is mounted on a camshaft grinding machine, specifically, as follows: Figure 5As shown, the camshaft grinding machine of this embodiment includes a grinding mechanism 21, a clamping mechanism 22, and a base 23. The clamping mechanism 22 includes a headstock 221 and a tailstock 222. The grinding mechanism 21, the headstock 221, and the tailstock 222 are all mounted on the worktable 231 of the base 23. In this embodiment, a second through hole 14 is provided on the base 1, and a first slide rod 12 is slidably inserted into the second through hole 14. The base 1 is slidably mounted on the first slide rod 12 through the second through hole 14. Both ends of the first slide rod 12 are fixedly connected to the worktable 231, so that the base 1 is slidably set along the length direction of the worktable 231, and the bottom surface of the base 1 is flush with the surface of the worktable 231 to prevent the base 1 from tilting when moving.

[0037] A top support assembly is slidably mounted on the base 1 along a first direction to support the camshaft. The top support assembly includes a base plate 31 and support frames 32 fixedly mounted at both ends of the base plate 31. A mounting post 13 is provided on the base 1. A mounting hole 311 is formed on the base plate 31, penetrating both the base plate 31 and the support frame 32. The mounting post 13 is inserted into the mounting hole 311, allowing the top support assembly to slidably mount on the base 1 along the first direction. In this embodiment, the first direction is the axial direction of the mounting post 13. When the base plate 31 moves towards the upper end of the mounting post 13, it causes the support frame 32 to gradually approach the camshaft until it contacts the camshaft and stops, maintaining a supporting state to support the camshaft. During the grinding process of the grinding mechanism 21, this provides support force, reduces camshaft runout, and ensures machining accuracy.

[0038] It should be noted that in this embodiment, the support frame 32 is Y-shaped to support camshafts of different diameters. Furthermore, in this embodiment, the two support frames 32 are located on both sides of the grinding wheel of the grinding mechanism 21. That is, when the grinding wheel grinds the camshaft, the support frames 32 support the camshaft on both sides of the grinding position, ensuring support and reducing the camshaft's sway amplitude.

[0039] A driving assembly is slidably mounted on the base 1 along a second direction. The driving assembly includes a first driving member 41, which drives the top support assembly to move along a first direction. In this embodiment, the driving assembly also includes a second driving member 42. The first and second driving members 41 and 42 are respectively disposed on opposite sides of the base 1. Multiple connecting rods 43 are fixedly connected between the first and second driving members 41 and 42. Multiple first through holes 11 are provided on the base 1, and the connecting rods 43 are slidably inserted into the first through holes 11. A connecting member 44 is provided on the side of the first driving member 41 away from the second driving member 42, and the connecting member 44 is used to connect to an external driving source. When the external driving source drives the connecting member 44 to move along the length of the worktable 231, the multiple connecting rods 43 can drive the base 1 and the worktable 231 to move together along the length of the worktable 231. It should be noted that in this embodiment, the external driving source is preferably a grinding mechanism 21. The free end of the connecting member 44 can be fixedly connected to the grinding mechanism 21. During grinding, the grinding mechanism 21 performs axial and lateral movements. Axial movement is used to change the grinding position. When the grinding mechanism 21 moves axially, the drive component can be moved by the connector 44 to change the position of the base 1, thereby changing the support position of the top support component, so that the support position moves with the movement of the grinding position.

[0040] A transmission assembly is disposed between the first driving member 41 and the top support assembly, for elastically connecting the top support assembly and the first driving member 41. It should be noted that the second direction is the radial direction of the camshaft, i.e., the aforementioned lateral movement. When the grinding mechanism 21 moves laterally, it drives the connecting member 44 to move laterally, which in turn drives the first driving member 41 to move. The first driving member 41, through the transmission assembly, drives the top support assembly to move along the first direction.

[0041] Specifically, the transmission assembly includes a first connecting block 51, a second connecting block 52, and a first spring 53. The first spring 53 is connected between the first connecting block 51 and the second connecting block 52, achieving an elastic connection between the first connecting block 51 and the second connecting block 52. A first hinge seat 312 is provided on the base plate 31, and the first connecting block 51 is rotatably connected to the first hinge seat 312. A second hinge seat 411 is provided on the first driving member 41, and the second connecting block 52 is rotatably connected to the second hinge seat 411. This achieves an elastic connection between the top support assembly and the first driving member 41. When the first driving member 41 approaches the camshaft, it compresses the first spring 53 and pushes the first connecting block 51 to move. The first connecting block 51 drives the base plate 31 to move towards the upper end of the mounting post 13, causing the support frame 32 to gradually approach the camshaft until it contacts the camshaft and stops, maintaining a supporting state. After the support frame 32 abuts against the camshaft, the first driving member 41 can continue to move by compressing the first spring 53, avoiding affecting the normal feed grinding of the grinding mechanism 21.

[0042] In this embodiment, the first connecting block 51 is provided with a first rod 511 and a first sleeve 512, and the second connecting block 52 is provided with a second rod 521 and a second sleeve 522. Multiple first springs 53 are provided, each sleeved on the first rod 511 and the second rod 521. The free end of the first rod 511 is slidably inserted into the second sleeve 522, and the free end of the second rod 521 is slidably inserted into the first sleeve 512. By setting the first rod 511, the first sleeve 512, the second rod 521, and the second sleeve 522, both elastic connection between the first connecting block 51 and the second connecting block 52 can be ensured, and misalignment between the first connecting block 51 and the second connecting block 52 can be avoided, thus preventing any impact on the transmission effect.

[0043] A limiting component, fixedly mounted on the base 1, is used to unidirectionally limit the top support component. After the top support component is supported under the camshaft, the limiting component fixes the top support component, thereby maintaining its supported state. Specifically, the limiting component includes a mounting block 6, which is fixedly connected to the base 1. A first slot 61 is opened on the side of the mounting block 6 near the base plate 31. A limiting head 62 is slidably mounted in the first slot 61. A guide surface 621 is provided on the lower surface of the end of the limiting head 62. Second sliding rods 622 are fixedly connected to both sides of the tail of the limiting head 62. A third through hole is opened on the mounting block 6. The second sliding rods 622 are inserted into the third through hole. A second spring 64 is sleeved on the second sliding rod 622. One end of the second spring 64 is connected to the inner bottom wall of the first slot 61, and the other end is connected to the limiting head 62. The second spring 64 pushes the limiting head 62 out of the first slot 61 and supports it under the base plate 31, thereby achieving unidirectional limiting of the top support component.

[0044] In this embodiment, a toggle member 7 is provided on the limiting component. The toggle member 7 is used to toggle the limiting component, so that the limiting component releases the one-way limiting of the top support component. The second driving component 42 is used to toggle the toggle member 7. After the toggle member 7 releases the one-way limiting of the top support component, the top support component can be reset so that the grinding mechanism 21 can drive the top support component to move through the driving component. Specifically, the actuating element 7 is rotatably mounted on the mounting block 6. The actuating element 7 includes a first plate 71 and a second plate 72. The first plate 71 and the second plate 72 are integrally formed. A second slot 711 is opened on the first plate 71 at the position corresponding to the second slide rod 622. The second slide rod 622 is located in the second slot 711. A stop block 623 is fixedly connected to the free end of the second slide rod 622. The first plate 71 is located between the stop block 623 and the mounting block 6, and the second plate 72 is located between the second driving element 42 and the base 1. The second driving element 42 pushes the second plate 72 to drive the first plate 71 to rotate. The first plate 71 pushes the stop block 623 to pull the limiting head 62 into the first slot 61, thereby releasing the limitation on the substrate 31. There is no need to manually or additionally set a driving source to change the triggering actuating element 7.

[0045] In this embodiment, the mounting block 6 has through slots 65 on both sides of the first slot 61. A support rod 15 is fixedly connected to the base 1 and inserted into the through slot 65. Fixing holes 66 are provided on both sides of the mounting block 6, communicating with the through slots 65. Fixing bolts 67 are threaded into the fixing holes 66, and the ends of the fixing bolts 67 abut against the support rod 15. Since the height of the top support assembly varies when supporting camshafts of different diameters, by setting the fixing bolts 67 and the support rods 15, the mounting block 6 can be fixedly connected to the base 1, and the position of the mounting block 6 can be easily changed, thereby adjusting the position of the limiting assembly and providing unidirectional limiting for the top support assembly at different heights.

[0046] In this embodiment, a shaft hole is provided at the connection between the first plate 71 and the second plate 72. A third hinge seat 68 is provided on the side of the mounting block 6 near the second driving member 42. The actuating member 7 is rotatably connected to the third hinge seat 68 through the shaft hole, thereby realizing the rotatable connection between the actuating member 7 and the mounting block 6.

[0047] In this embodiment, a third spring 131 is sleeved on the mounting post 13. One end of the third spring 131 is fixedly connected to the base plate 31, and the other end is fixedly connected to the base 1. The third spring 131 is used to provide a downward pulling force to the top support assembly when the top support assembly is reset, so as to facilitate the smooth reset of the top support assembly.

[0048] The working principle of this invention is as follows:

[0049] When the main control unit of the grinding machine controls the grinding mechanism 21 to move axially, it drives the drive assembly to move through the connecting piece 44 to change the position of the base 1, thereby changing the support position of the top support assembly, so that the support position moves with the movement of the grinding position.

[0050] After the grinding mechanism 21 moves to the cam to be ground, it begins to move laterally, driving the connecting member 44 to move laterally. The connecting member 44 drives the first driving member 41 to move. When the first driving member 41 approaches the camshaft, it compresses the first spring 53 and pushes the first connecting block 51 to move. The first connecting block 51 drives the base plate 31 to move towards the upper end of the mounting post 13, driving the support frame 32 to gradually approach the camshaft until it contacts the camshaft and stops, maintaining a supported state. When the base plate 31 presses against the limiting head 62, under the action of the guide surface 621, it presses the limiting head 62 into the first slot 61. The second spring 64 is compressed. While the support frame 32 is supported under the camshaft, it releases the pressure on the limiting head 62. The second spring 64 pushes the limiting head 62 out of the first slot 61 and supports it under the base plate 31, achieving unidirectional limiting of the top support assembly.

[0051] After the grinding mechanism 21 completes the grinding of the cam by reciprocating, it begins to gradually move away from the camshaft, i.e., the retraction process. During this process, the second drive component 42 approaches the second plate 72, and the second drive component 42 pushes the second plate 72 to drive the first plate 71 to rotate. The first plate 71 pushes the stop block 623 to pull the limiting head 62 into the first slot 61, thereby releasing the limiting of the substrate 31. Under the downward pulling force generated by the first spring 53 and the second spring 64 on the substrate 31, the substrate 31 is reset, thereby realizing the reset of the top support component, so that the grinding mechanism 21 can drive the anti-sway device to move axially.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A camshaft machining anti-sway device, characterized in that, include: Base; A top support assembly is slidably mounted on the base along a first direction to support the camshaft; A driving assembly is slidably disposed on the base along a second direction. The driving assembly includes a first driving member, which is used to drive the top support assembly to move along the first direction. A transmission assembly is disposed between the first driving member and the top support assembly, for elastically connecting the top support assembly to the first driving member; A limiting component is fixedly installed on the base and is used to limit the top support component in one direction. The limiting component is provided with a toggle member, which is used to toggle the limiting component to release the one-way limitation on the top support component. The driving assembly further includes a second driving member. The first driving member and the second driving member are respectively disposed on both sides of the base. The second driving member is used to actuate the actuating member. Multiple connecting rods are fixedly connected between the first driving member and the second driving member. Multiple first through holes are provided on the base. The connecting rods are slidably inserted into the first through holes. A connecting member is provided on the side of the first driving member away from the second driving member. The connecting member is used to connect to an external driving source. A second through hole is provided on the base. A first sliding rod is slidably inserted into the second through hole. The base is slidably mounted on the first sliding rod through the second through hole.

2. The anti-sway device for camshaft machining according to claim 1, characterized in that, The top support assembly includes a base plate and a support frame fixedly disposed at both ends of the base plate. The base plate is provided with a mounting post, and the base plate is provided with a mounting hole that passes through the base plate and the support frame. The mounting post is inserted into the mounting hole.

3. The anti-sway device for camshaft machining according to claim 2, characterized in that, The transmission assembly includes a first connecting block, a second connecting block, and a first spring. The first spring is connected between the first connecting block and the second connecting block. A first hinge seat is provided on the base plate. The first connecting block is rotatably connected to the first hinge seat. A second hinge seat is provided on the first driving member. The second connecting block is rotatably connected to the second hinge seat.

4. The anti-sway device for camshaft machining according to claim 3, characterized in that, The first connecting block is provided with a first rod and a first sleeve, the second connecting block is provided with a second rod and a second sleeve, and multiple first springs are provided, which are respectively sleeved on the first rod and the second rod. The free end of the first rod is slidably inserted into the second sleeve, and the free end of the second rod is slidably inserted into the first sleeve.

5. The anti-sway device for camshaft machining according to claim 2, characterized in that, The limiting component includes a mounting block, which is fixedly connected to the base. A first slot is formed on the side of the mounting block near the substrate. A limiting head is slidably mounted in the first slot. A guide surface is provided on the lower surface of the end of the limiting head. A second sliding rod is fixedly connected to both sides of the tail of the limiting head. A third through hole is formed on the mounting block. The second sliding rod is slidably inserted into the third through hole. A second spring is sleeved on the second sliding rod. One end of the second spring is connected to the bottom wall of the first slot, and the other end is connected to the limiting head.

6. The anti-sway device for camshaft machining according to claim 5, characterized in that, The mounting block has through slots on both sides of the first slot. A support rod is fixedly connected to the base and inserted into the through slot. Fixing holes are opened on both sides of the mounting block and communicate with the through slot. Fixing bolts are threaded into the fixing holes and the ends of the fixing bolts abut against the support rods.

7. The anti-sway device for camshaft machining according to claim 5, characterized in that, The actuating component is rotatably mounted on the mounting block. The actuating component includes a first plate and a second plate. The first plate and the second plate are integrally formed. A second slot is provided on the first plate corresponding to the position of the second slide rod. The second slide rod is located in the second slot. A stop block is fixedly connected to the free end of the second slide rod. The first plate is located between the stop block and the mounting block. The second plate is located between the second driving component and the base. The second driving component can drive the first plate to rotate by pushing the second plate.

8. The anti-sway device for camshaft machining according to claim 7, characterized in that, A shaft hole is provided at the connection between the first plate and the second plate. A third hinge seat is provided on the side of the mounting block near the second driving member. The actuating member is rotatably connected to the third hinge seat through the shaft hole.

9. A camshaft machining anti-sway device according to claim 2, characterized in that, A third spring is fitted onto the mounting post. One end of the third spring is fixedly connected to the base plate, and the other end is fixedly connected to the base.

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