Cutting device for damper metal part production and electric bicycle damper

Abstract

The invention relates to the technical field of metal part cutting, and discloses a cutting device for shock absorber metal part production and an electric bicycle shock absorber. The cutting device for shock absorber metal part production comprises a machine tool, a tool apron arranged on the upper portion of the machine tool and a clamping mechanism arranged on the top of a working table top of the machine tool; the rotating mechanism is arranged in the clamping mechanism, the fixing mechanism is arranged at the top of the rotating mechanism, and the clamping mechanism comprises a base arranged on a working table of the machine tool, a circular groove formed in the inner side of the top of the base, a rotating cylinder arranged on the upper portion of the base, a circular ring arranged at the bottom of the rotating cylinder and a limiting ring arranged on the inner side of the rotating cylinder. By arranging the rotating mechanism and the fixing mechanism, rotation of the part is achieved, the tedious step of manually adjusting the part is avoided, it is guaranteed that the part is kept stable in the machining process of the cutting device, and therefore the machining quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of metal parts cutting, in particular to a cutting device for producing shock absorber metal parts and an electric bicycle shock absorber. Background Art

[0002] The processing device for the production of shock absorber metal parts is a mechanical device designed specifically for the manufacture of shock absorber metal parts for electric bicycles. Electric bicycles need shock absorbers to reduce the bumps generated during driving. The shock absorber is composed of multiple metal parts, which are key components for the normal operation of the shock absorber. The processing quality directly affects the performance and life of the shock absorber. The processing device for the production of shock absorber metal parts usually consists of a machine tool body, a power system, a clamping mechanism, a cooling system and other auxiliary devices. These components work together to achieve precision processing of metal materials. The device uses a tool to cut the metal upper seat plate through the conversion of mechanical energy and electrical energy to form the required geometric shape and size. During the processing, the relative movement of the tool and the upper seat plate is controlled by the feed system and the spindle system to achieve the predetermined processing accuracy. The processing device for the production of shock absorber metal parts plays a vital role in the manufacturing industry. Its technological innovation and process improvement are of great significance to improving the performance of shock absorbers and the overall quality of automobiles.

[0003] The processing device for producing metal parts of shock absorbers has been widely used in the field of mechanical processing, but due to the limitations of its structure and working principle, there are often some problems that cannot be ignored. For example, during the processing of traditional processing devices for producing metal parts of shock absorbers, since the position of the milling cutter is often on one side of the upper seat plate, only one-side cutting can be achieved. After completing the partial cutting of the upper seat plate, it is necessary to release the clamping of the upper seat plate, and then rotate the part, adjust the angle of the part, re-clamp the part, and then cut other parts of the part. The operation is inconvenient and cumbersome, which is not conducive to improving the processing speed. When cutting the parts, the swing problem of the clamping mechanism itself is not taken into account. During the contact between the parts and the upper seat plate, vibration will be generated, causing the parts to swing horizontally, affecting the processing accuracy and easily damaging the tool. In addition, the operation is not simple enough when clamping and removing parts, which affects work efficiency. Summary of the invention

[0004] In view of the problem in the prior art that metal parts are not easy to rotate after cutting, and the metal parts of the fixture are easy to swing during the cutting process, which affects the cutting efficiency, a cutting device for producing shock absorber metal parts is proposed.

[0005] Its purpose is to rotate the metal parts to realize grooving processing at different positions, and to prevent the parts and fixtures from swinging during the processing to ensure the stability of the cutting processing.

[0006] The technical solution of the present invention is a cutting device for producing shock absorber metal parts, comprising a machine tool, a tool holder arranged on the upper part of the machine tool, a clamping mechanism arranged on the top of the working table of the machine tool, a rotating mechanism arranged inside the clamping mechanism, and also a fixing mechanism arranged on the top of the rotating mechanism;

[0007] The clamping mechanism comprises a base arranged on the working table of the machine tool, a circular groove provided on the inner side of the top of the base, a rotating drum provided on the upper part of the base, a circular ring provided on the bottom of the rotating drum, a limiting ring provided on the inner side of the rotating drum, a pressure block provided on the top of the inner wall of the rotating drum, three annular arrays of telescopic holes provided on the middle and upper part of the inner wall of the rotating drum, a clamping jaw provided inside the rotating drum and passing through the telescopic holes, an upper seat plate provided on the outer sides of the three clamping jaws, and a spring 1 provided on one end of the clamping jaw away from the upper seat plate, the two ends of the spring 1 being respectively fixedly connected to the end of the clamping jaw away from the upper seat plate and the inner wall of the rotating drum;

[0008] The rotating mechanism includes a sliding sleeve arranged on the inner side of the rotating drum, a top frame arranged on the top of the sliding sleeve, a through hole opened at the top of the top frame, two hooks symmetrically arranged at the bottom of the top frame, a guide groove 1 arranged on the upper outer side of the sliding sleeve, a guide groove 2 arranged on the lower outer side of the sliding sleeve, a spring 2 arranged at the bottom of the sliding sleeve, the top and bottom of the spring 2 are respectively fixedly connected to the bottom of the sliding sleeve and the bottom of the base, two screw holes opened on one side of the rotating drum, a ball pin arranged on the inner side of the screw hole, a pull rod arranged on the inner side of the through hole, a pressure plate arranged on the top of the pull rod, two limit blocks symmetrically arranged in the middle of the pull rod, a cross bar arranged at the bottom of the pull rod, and a sliding hole opened inside the base.

[0009] Furthermore, the fixing mechanism includes a support plate arranged on the side of the rotating drum away from the sliding sleeve, a claw arranged on the top of the support plate, six annular arrays of slots opened at the bottom of the claw, three annular arrays of brackets arranged on the top of the top frame, and a pin arranged on the top of the bracket.

[0010] Furthermore, the tool holder includes a tool handle, a pressure rod arranged in the middle of the tool handle, and a milling cutter arranged at an end of the tool handle away from the pressure rod.

[0011] Furthermore, a thread is provided in the middle of the ball pin, and the two ball pins have the same shape, and the width of the guide groove 1 and the guide groove 2 both match the diameter of the ball head of the ball pin.

[0012] Furthermore, the top shape of the latch matches the shape of the slot, and a support rod is provided on the top of the bracket.

[0013] Furthermore, a thread is provided on the inner wall of the rotating drum near the top, and a thread meshing with the rotating drum is provided in the middle of the pressing block.

[0014] Furthermore, both ends of the clamping jaw are L-shaped, and the cross section of the middle portion of the clamping jaw matches the telescopic hole.

[0015] Furthermore, the pull rod has a hexagonal shape, and the through hole is a hexagonal hole, and the bottom end of the pull rod passes through the through hole and the sliding hole in sequence.

[0016] Another object of the present invention is to provide a shock absorber for an electric bicycle, the purpose of which is to reduce the bumps generated during the use of the electric bicycle.

[0017] To achieve the above objectives, the present invention provides the following technical solutions: an electric bicycle shock absorber, comprising an upper support, an upper seat plate fixedly connected to the middle part of the outer side of the upper support, a piston rod slidably connected to the inside of the upper support, and a lower support fixedly connected to the bottom of the piston rod.

[0018] Furthermore, the top of the lower support is fixedly connected to a lower seat plate, and a shock-absorbing spring is sleeved on the outer bottom of the upper support, and the top and bottom of the shock-absorbing spring are respectively abutted against the bottom of the upper seat plate and the top of the lower seat plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By setting up a rotating mechanism, the cutting device can realize the rotation of the parts. This design avoids the tedious steps of manually adjusting the parts. The rotating mechanism allows the cutting device to perform grooving operations on different positions of the parts without stopping for repositioning, and can adjust different rotation angles through the ball pin to adapt to different production needs. The use of this mechanism not only reduces the labor intensity of operators, but also shortens the processing cycle and improves the automation level and production efficiency of parts processing.

[0021] 2. By setting up a fixing mechanism, the cutting device can ensure that the parts remain stable during the processing, thereby ensuring the processing quality, reducing vibration and displacement during the processing, making the cutting more precise, and improving the processing accuracy and consistency of the parts. At the same time, it avoids damage to the tool caused by part vibration and extends the service life of the cutting tool.

[0022] 3. By setting up a clamping mechanism, parts with different inner diameters can be clamped quickly to adapt to a variety of processing scenarios. The clamping mechanism consists of adjustable jaws and pressure blocks. The jaws can be adjusted according to the size of the parts to ensure firm clamping. This design not only shortens the processing preparation time, but also improves the flexibility and adaptability of processing through flexible clamping methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2It is a schematic diagram of the knife holder structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the overall structure of the clamping mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the internal structure of the clamping mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the connection between the pull rod and the base of the present invention;

[0028] Figure 6 is a cross-sectional view of the base of the present invention;

[0029] Figure 7 It is a schematic diagram of the connection between the pull rod and the top frame of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the rotating drum of the present invention;

[0031] Fig. 9 It is a schematic diagram of the connection between the bracket and the latch of the present invention;

[0032] Fig.10 It is a structural schematic diagram of the clamping claw of the present invention;

[0033] Fig.11 It is a structural schematic diagram of the top frame of the present invention;

[0034] Fig.12 It is a schematic diagram of the connection between the claw and the latch of the present invention;

[0035] Fig.13 It is a schematic diagram of the shock absorber structure of the present invention.

[0036] In the figure:

[0037] 1. Machine tool; 2. Tool holder; 21. Tool handle; 22. Pressure rod; 23. Milling cutter; 3. Clamping mechanism; 31. Base; 32. Circular groove; 33. Rotating drum; 34. Circular ring; 35. Limiting ring; 36. Press block; 37. Telescopic hole; 38. Clamping claw; 39. Spring 1; 4. Rotating mechanism; 41. Sliding sleeve; 42. Top frame; 43. Through hole; 44. Hook; 45. Guide groove 1; 46. Guide groove 2; 47 , spring 2; 48, screw hole; 49, ball pin; 410, pull rod; 411, pressure plate; 412, limit block; 413, cross bar; 414, sliding hole; 5, fixing mechanism; 51, support plate; 52, claw; 53, slot; 54, bracket; 55, latch; 56, support rod; 6, upper seat plate; 71, upper support; 72, piston rod; 73, lower support; 75, lower seat plate; 76, shock-absorbing spring. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0039] Example 1, reference Figure 1-Figure 6 , which is the first embodiment of the present invention, provides a cutting device for producing shock absorber metal parts, including a machine tool 1, a tool holder 2 fixedly connected to the upper part of the machine tool 1, a clamping mechanism 3 fixedly connected to the top of the working table of the machine tool 1, a rotating mechanism 4 slidably connected inside the clamping mechanism 3, and also includes a fixing mechanism 5 fixedly connected to the top of the rotating mechanism 4; the clamping mechanism 3 includes a base 31 fixedly connected to the working table of the machine tool 1, a circular groove 32 provided on the inner side of the top of the base 31, and a fixing mechanism 5 rotatably connected to the base The rotating cylinder 33 at the upper part of the rotating cylinder 31, the ring 34 fixedly connected to the bottom of the rotating cylinder 33, the limiting ring 35 fixedly connected to the inner side of the rotating cylinder 33, the pressing block 36 threadedly connected to the top of the inner wall of the rotating cylinder 33, three annular arrays of telescopic holes 37 opened in the middle and upper part of the inner wall of the rotating cylinder 33, the clamping claws 38 slidably connected to the inside of the rotating cylinder 33 and passing through the telescopic holes 37, the upper seat plate 6 fixedly connected to the outer sides of the three clamping claws 38, and the spring 39 fixedly connected to the end of the clamping claw 38 away from the upper seat plate 6, and the two ends of the spring 39 The ends are respectively fixedly connected with one end of the clamping claw 38 away from the upper seat plate 6 and the inner wall of the rotating cylinder 33; the rotating mechanism 4 includes a sliding sleeve 41 slidably connected to the inner side of the rotating cylinder 33, a top frame 42 fixedly connected to the top of the sliding sleeve 41, a through hole 43 opened at the top of the top frame 42, two hooks 44 symmetrically fixedly connected to the bottom of the top frame 42, a guide groove 1 45 opened on the upper outer side of the sliding sleeve 41, a guide groove 2 46 opened on the lower outer side of the sliding sleeve 41, a spring 2 47 fixedly connected to the bottom of the sliding sleeve 41, and a spring 2 The top and bottom of 47 are fixedly connected to the bottom of the sliding sleeve 41 and the bottom of the base 31 respectively, two screw holes 48 are opened on one side of the rotating cylinder 33, a ball pin 49 is threadedly connected to the inner side of the screw hole 48, a pull rod 410 is slidably connected to the inner side of the through hole 43, a pressure plate 411 is fixedly connected to the top of the pull rod 410, and two limit blocks 412 are symmetrically fixedly connected to the middle part of the pull rod 410, a cross bar 413 is fixedly connected to the bottom of the pull rod 410, and a sliding hole 414 is opened inside the base 31.

[0040] Specifically, when the tool holder 2 moves downward, it drives the milling cutter 23 and the pressure rod 22 to move downward together. After the milling cutter 23 contacts the upper seat plate 6, it will cut it. After the pressure rod 22 moves down to the maximum stroke along with the tool holder 2, the bottom of the pressure rod 22 will push the cross bar 413 to move downward. When the cross bar 413 moves downward, it drives the pull rod 410 to move downward. The pull rod 410 drives the pressure plate 411 to move together, and drives the top frame 42 to move together. The top frame 42 drives the sliding sleeve 41 to move downward. In the process of sliding sleeve 41 moving downward, the ball pin 49 connected to it is squeezed through the guide groove 45. The ball pin 49 moves after being subjected to force, and drives the rotating drum 33 to move together while moving. The rotating drum 33 is affected by the ring 3 4 and the circular groove 32 can only rotate in place. When the rotating drum 33 rotates, the clamping claw 38 is driven to rotate together, and the clamping claw 38 drives the upper seat plate 6 to rotate. When the sliding sleeve 41 moves downward, the spring 2 47 is compressed to store force. When the pressure rod 22 releases the downward pressure on the cross bar 413, the sliding sleeve 41 and the top frame 42 will move upward under the action of the spring 2 47 until the top of the sliding sleeve 41 contacts the limiting ring 35. When the top frame 42 moves upward, it drives the hook 44 to move upward. After the hook 44 moves up a certain distance, it contacts the limit block 412 and drives it to move upward. When the limit block 412 moves upward, it drives the pull rod 410 to move upward. The pull rod 410 drives the pressure plate 411 and the cross bar 413 to move upward together. To reset, by rotating the ball pin 49, it can be extended and retracted along the screw hole 48, so that any one of the guide groove 1 45 and the guide groove 2 46 cooperates with the ball pin 49, and the rotating drum 33 can be switched between different rotation angles, and the pressure block 36 is controlled to move downward, so that it can squeeze the clamping claw 38, so that the clamping claw 38 expands outward and the spring 1 39 accumulates force, and the clamping claw 38 clamps the inner wall of the upper seat plate 6, and the pressure block 36 is moved upward. The clamping claw 38 will shrink under the action of the spring 1 39, and the clamping of the upper seat plate 6 can be released. Under the action of the rotating mechanism 4, the cutting device can realize the rotation of the part. This design avoids the cumbersome steps of manually adjusting the part. The rotating mechanism 4 allows the cutting device to rotate the part. The device can perform grooving operations on different positions of the parts without stopping for repositioning, and can adjust different rotation angles through the ball pin 49 to adapt to different production needs. The use of this mechanism not only reduces the labor intensity of the operator, but also shortens the processing cycle, improves the automation level and production efficiency of part processing, and the clamping mechanism 3 can quickly clamp parts with different inner diameters to adapt to various processing scenarios. The clamping mechanism 3 is composed of an adjustable jaw 38 and a pressure block 36. The jaw 38 can be adjusted according to the size of the part to ensure firm clamping. This design not only shortens the processing preparation time, but also improves the flexibility and adaptability of processing through flexible clamping methods.

[0041] Reference Figure 3-Figure 5The fixing mechanism 5 includes a support plate 51 fixedly connected to the inside of the drum 33 on the side away from the sliding sleeve 41, a claw 52 fixedly connected to the top of the support plate 51, and six annular arrays of slots 53 opened at the bottom of the claw 52, ​​three annular arrays of brackets 54 fixedly connected to the top of the top frame 42, and a pin 55 rotatably connected to the top of the bracket 54.

[0042] Specifically, after the pressure plate 411 moves down a certain distance, its bottom will push the bottom of the latch 55. After the bottom of the latch 55 is pushed, it will rotate around the connection with the bracket 54, thereby releasing the clamping connection with the slot 53, allowing the claw 52, ​​the support plate 51 and the rotating drum 33 to rotate. After the pressure plate 411 is reset, the pressure on the latch 55 is released. The latch 55 will reset under the action of gravity and insert its top end into the corresponding slot 53. The fixing mechanism 5 ensures that the cutting device keeps the parts stable during the machining process, thereby ensuring the machining quality, reducing vibration and displacement during the machining process, making the cutting more precise, and improving the machining accuracy and consistency of the parts. At the same time, it avoids damage to the tool due to part vibration and extends the service life of the cutting tool.

[0043] Reference Figure 2 The tool holder 2 includes a tool handle 21, a pressure rod 22 fixedly connected to the middle of the tool handle 21, and a milling cutter 23 rotatably connected to one end of the tool handle 21 away from the pressure rod 22.

[0044] Specifically, the tool holder 2 can move with the control of the machine tool 1. When the tool holder 2 moves, it can drive the milling cutter 23 and the pressure rod 22 to move synchronously. After the milling cutter 23 moves down to contact the upper seat plate 6, it will cut the upper seat plate 6. The tool holder 2 continues to move down after the milling cutter 23 cuts the upper seat plate 6 and drives the pressure rod 22 to move down. During the downward movement, the pressure rod 22 presses the cross bar 413 downward, and then the tool holder 2 moves up to release the downward pressure on the cross bar 413. The upper seat plate 6 rotates under the action of the rotating mechanism 4 to adjust the cutting position, so that the milling cutter 23 cuts the upper seat plate 6 during the upward movement. After the cutting is completed, the tool holder 2 is controlled to move down again, so that the upper seat plate 6 rotates again until the processing of the upper seat plate 6 is completed.

[0045] Example 2, reference Figure 4 and Figure 8 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that a thread is provided in the middle of the ball pin 49, and the two ball pins 49 have the same shape. The width of the guide groove 1 45 and the guide groove 2 46 are matched with the ball head diameter of the ball pin 49. The thread in the middle of the ball pin 49 matches the thread of the screw hole 48. By rotating the ball pin 49, it can be moved under the action of the thread.

[0046] Specifically, the ball pin 49 is constrained by the screw hole 48 and can only move along the axis of the screw hole 48. The ball pin 49 can be extended and retracted in the screw hole 48 by rotating it in different directions. The ball head of the ball pin 49 matches the width of the guide groove 1 45 and the guide groove 2 46, so that the ball head can move along the guide groove 1 45 and the guide groove 2 46.

[0047] Reference Fig. 9 and Fig.10 The top shape of the latch 55 matches the shape of the slot 53 , and the top of the bracket 54 is fixedly connected with a support rod 56 .

[0048] Specifically, the top of the latch 55 can be inserted into the inside of the slot 53 , thereby limiting the claw 52 so that it cannot swing in the horizontal direction, and the support rod 56 can limit the movement range of the latch 55 .

[0049] Reference Figure 4 A thread is provided on the inner wall of the rotating drum 33 near the top, and a thread meshing with the rotating drum 33 is provided in the middle of the pressing block 36 .

[0050] Specifically, the pressing block 36 can move up and down along the axis of the rotating drum 33 under the action of the thread, and the pressing block 36 can squeeze the clamping claws 38 to expand outwards to clamp the upper seat plate 6 during the downward movement.

[0051] Reference Figure 4-Figure 5 Both ends of the clamping jaw 38 are L-shaped, and the cross-section of the middle portion of the clamping jaw 38 matches the telescopic hole 37 .

[0052] Specifically, the end of the clamp 38 away from the upper seat plate 6 can maintain contact with the pressure block 36 under the action of a spring 39, and the middle part of the clamp 38 can be extended and retracted along the telescopic hole 37. When the three clamps 38 are not squeezed by the pressure block 36, they will be pushed together by the spring 39 connected thereto.

[0053] Reference Figure 7 and Fig.11 The pull rod 410 has a hexagonal shape, and the through hole 43 is a hexagonal hole. The bottom end of the pull rod 410 passes through the through hole 43 and the sliding hole 414 in sequence.

[0054] Specifically, the pull rod 410 constrains the top frame 42 through the through hole 43, so that the top frame 42 can only move up and down, and the sliding sleeve 41 can also only move up and down. When the pull rod 410 moves, it will drive the limit block 412, the pressure plate 411 and the cross bar 413 to move together.

[0055] In summary, the working principle of a cutting device for producing metal parts for shock absorbers of the present invention is as follows: the pressing block 36 is rotated to make it move downward under the action of the thread, and the pressing block 36 will squeeze the three clamping jaws 38 while moving downward. The three clamping jaws 38 will expand toward the outside of the rotating cylinder 33 synchronously after being squeezed, and the clamping jaws 38 will squeeze the spring 1 39 connected thereto while expanding, so that the end of the clamping jaws 38 away from the spring 1 39 is expanded to a position slightly smaller than the diameter of the upper seat plate 6, and then the axis of the upper seat plate 6 blank is aligned with the axis of the rotating cylinder 33, and the blank is moved downward from the top of the rotating cylinder 33 until the bottom of the upper seat plate 6 contacts the protrusion of the end of the clamping jaws 38 away from the spring 1 39, and then the pressing block 36 is rotated again to make the three clamping jaws 38 continue to expand until the upper seat plate 6 is clamped. After the upper seat plate 6 is clamped, the machine tool 1 is controlled to drive the tool holder to move downward, and the tool holder drives the milling cutter 23 and the pressure rod 22 to move. After the milling cutter 23 moves downward and contacts the upper seat plate 6, the upper seat plate 6 will be cut. After cutting, the tool holder drives the pressure rod 22 to continue to move downward until the bottom end of the pressure rod 22 presses the cross bar 413 downward. The tool holder moves upward to release the pressure of the pressure rod 22 on the cross bar 413, so that the cross bar 413 can be reset, and the rotating mechanism 4 is triggered in the process to rotate the upper seat plate 6. The tool holder drives the milling cutter 23 to move upward and cut the rotated upper seat plate 6 again. While the cross bar 413 is pressed and moved downward, it drives the pull rod 410 to move downward. The pull rod 410 drives the pressure plate 411 and the limit block 412 to move together. After the pressure plate 411 moves a certain distance, it squeezes the bottom end of the latch 55. , so that the latch 55 rotates around the connection with the bracket 54, and releases the connection with the slot 53 while rotating, so that the claw 52 can rotate under the action of the support plate 51 and the rotating cylinder 33. The limit block 412 contacts the hook 44 after moving a certain distance, and drives the top frame 42 and the sliding sleeve 41 to move downward through the hook 44. The sliding sleeve 41 compresses the spring 2 47. When the sliding sleeve 41 moves downward, it squeezes the corresponding ball pin 49 through the guide groove 1 45 or the guide groove 2 46, and drives the rotating cylinder 33 to rotate through the ball pin 49. The rotation of the rotating cylinder 33 drives the clamping claw 38 and the upper seat plate 6 to rotate together, thereby realizing the adjustment of the upper seat plate 6. After the pressure rod 22 releases the pressure on the cross bar 413, the sliding sleeve 41 moves up and resets under the action of the spring 2 47. While the sliding sleeve 41 moves up The top frame 42 is driven to move upward, and the top frame 42 drives the hook 44 to move upward. The hook 44 drives the pull rod 410 to reset through the limit block 412. The pull rod 410 drives the pressure plate 411 and the cross bar 413 to move together while moving. After the pressure plate 411 is reset, the pressure on the latch 55 is released. The latch 55 will cooperate with the slot 53 on the claw 52 again under the action of gravity, so that the claw 52 and the rotating drum 33 cannot rotate. Only one of the guide groove 1 45 and the guide groove 2 46 can maintain a matching state with the ball pin 49 at the same time. Through the cooperation of the guide groove 1 45 and the guide groove 2 46 with the corresponding ball pin 49, the sliding sleeve 41 can drive the rotating drum 33 to rotate at different angles, so that the upper seat plate 6 can rotate at different angles. After the processing is completed, the pressing block 36 is moved upward.The clamping of the upper seat plate 6 can be released, so that the upper seat plate 6 can be removed.

[0056] Example 3, reference Fig.13 , which is the third embodiment of the present invention, provides: an electric bicycle shock absorber, including an upper support 71, an upper seat plate 6 arranged in the middle of the outer side of the upper support 71, a piston rod 72 arranged inside the upper support 71, and a lower support 73 arranged at the bottom of the piston rod 72.

[0057] Specifically, the piston rod 72 can slide inside the upper support 71 to adapt to the relative position change between the upper support 71 and the lower support 73 during use.

[0058] Reference Fig.13 A lower seat plate 75 is provided at the top of the lower support 73, and a shock-absorbing spring 76 is sleeved on the outer bottom of the upper support 71. The top and bottom of the shock-absorbing spring 76 are respectively in contact with the bottom of the upper seat plate 6 and the top of the lower seat plate 75.

[0059] Specifically, when the upper seat plate 6 and the lower seat plate 75 are close to each other, the shock absorbing spring 76 will be squeezed to store force in the shock absorbing spring 76. After the shock absorbing spring 76 contracts, it can push the upper seat plate 6 to return to its original position.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A cutting device for producing metal parts of a shock absorber, comprising a machine tool (1), a tool holder (2) arranged on the upper part of the machine tool (1), a clamping mechanism (3) arranged on the top of the working table of the machine tool (1), and a rotating mechanism (4) arranged inside the clamping mechanism (3), characterized in that: It also includes a fixing mechanism (5) arranged on the top of the rotating mechanism (4); The clamping mechanism (3) comprises a base (31) arranged on a working table of a machine tool (1), a circular groove (32) provided on the inner side of the top of the base (31), a rotating cylinder (33) provided on the upper part of the base (31), a circular ring (34) provided on the bottom of the rotating cylinder (33), a limiting ring (35) provided on the inner side of the rotating cylinder (33), a pressing block (36) provided on the top of the inner wall of the rotating cylinder (33), three annular arrays of telescopic holes (37) provided on the middle and upper part of the inner wall of the rotating cylinder (33), a clamping jaw (38) provided inside the rotating cylinder (33) and passing through the telescopic holes (37), an upper seat plate (6) provided on the outer side of the three clamping jaws (38), and a spring (39) provided on one end of the clamping jaw (38) away from the upper seat plate (6), wherein two ends of the spring (39) are respectively fixedly connected to one end of the clamping jaw (38) away from the upper seat plate (6) and the inner wall of the rotating cylinder (33); The rotating mechanism (4) comprises a sliding sleeve (41) arranged on the inner side of the rotating drum (33), a top frame (42) arranged on the top of the sliding sleeve (41), a through hole (43) provided on the top of the top frame (42), two hooks (44) symmetrically arranged on the bottom of the top frame (42), a first guide groove (45) provided on the upper outer side of the sliding sleeve (41), a second guide groove (46) provided on the lower outer side of the sliding sleeve (41), and a second spring (47) provided on the bottom of the sliding sleeve (41), wherein the top and bottom of the second spring (47) are respectively connected to the sliding sleeve (41) and the second spring (47) is connected to the sliding sleeve (41). The bottom of the sleeve (41) is fixedly connected to the bottom of the base (31), two screw holes (48) are opened on one side of the rotating drum (33), a ball pin (49) is arranged inside the screw hole (48), a pull rod (410) is arranged inside the through hole (43), a pressure plate (411) is arranged on the top of the pull rod (410), two limit blocks (412) are symmetrically arranged in the middle of the pull rod (410), a cross bar (413) is arranged at the bottom of the pull rod (410), and a sliding hole (414) is opened inside the base (31).

2. The cutting device for producing shock absorber metal parts according to claim 1, characterized in that: The fixing mechanism (5) comprises a support plate (51) arranged on a side of the rotating drum (33) away from the sliding sleeve (41), a clamping claw (52) arranged on the top of the support plate (51), six annular arrays of slots (53) opened at the bottom of the clamping claw (52), three annular arrays of brackets (54) arranged on the top of the top frame (42), and a latch (55) arranged on the top of the bracket (54).

3. The cutting device for producing shock absorber metal parts according to claim 1, characterized in that: The tool holder (2) comprises a tool handle (21), a pressure rod (22) arranged in the middle of the tool handle (21), and a milling cutter (23) arranged at an end of the tool handle (21) away from the pressure rod (22).

4. The cutting device for producing shock absorber metal parts according to claim 1, characterized in that: The middle part of the ball pin (49) is provided with a thread, and the two ball pins (49) have the same appearance, and the width of the guide groove 1 (45) and the guide groove 2 (46) are both matched with the ball head diameter of the ball pin (49).

5. The cutting device for producing shock absorber metal parts according to claim 2, characterized in that: The top shape of the latch (55) matches the shape of the slot (53), and a support rod (56) is provided on the top of the bracket (54).

6. The cutting device for producing shock absorber metal parts according to claim 1, characterized in that: The inner wall of the rotating cylinder (33) is provided with a thread near the top, and the middle part of the pressing block (36) is provided with a thread meshing with the rotating cylinder (33).

7. The cutting device for producing shock absorber metal parts according to claim 1, characterized in that: Both ends of the clamping jaw (38) are L-shaped, and the cross section of the middle portion of the clamping jaw (38) matches the telescopic hole (37).

8. The cutting device for producing shock absorber metal parts according to claim 1, characterized in that: The pull rod (410) has a hexagonal prism shape, and the through hole (43) is a hexagonal hole. The bottom end of the pull rod (410) passes through the through hole (43) and the sliding hole (414) in sequence.

9. An electric bicycle shock absorber, applied to a metal parts production cutting device as claimed in any one of claims 1 to 8, characterized in that: The utility model comprises an upper support (71), an upper seat plate (6) arranged at the middle part of the outer side of the upper support (71), a piston rod (72) arranged inside the upper support (71), and a lower support (73) arranged at the bottom of the piston rod (72).

10. The shock absorber for electric bicycle according to claim 9, characterized in that: A lower seat plate (75) is arranged at the top of the lower support (73), and a shock absorbing spring (76) is sleeved on the outer bottom of the upper support (71), and the top and bottom of the shock absorbing spring (76) are respectively in contact with the bottom of the upper seat plate (6) and the top of the lower seat plate (75).

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