A cutting device for preventing carbon fiber shaft defects

Abstract

The present application discloses a cutting device for preventing carbon fiber shaft defects, which belongs to the field of cutting technology. It includes a cutting unit with a blade for cutting; a clamping unit with a front clamping group and a rear clamping group that can move closer to or away from each other, and the front clamping group includes a front stopper. The present application discloses a cutting device for preventing carbon fiber shaft defects, which solves the technical problem that when the cutting blade rotates rapidly and contacts the carbon fiber shaft, the carbon fiber shaft is squeezed and deformed, which makes it easy for the blade to mistakenly cut the end faces of the carbon fiber shaft at both ends of the incision when cutting, resulting in missing corners.

Description

Technical Field

[0001] The present application relates to the field of cutting technology, and in particular to a cutting device for preventing carbon fiber shaft defects. Background Art

[0002] Carbon fiber shafts are primarily made of woven or multi-layered carbon fiber materials, offering lightweight, high strength, and high stiffness. Each carbon fiber strand is composed of thousands of smaller fibers, approximately 5 to 8 microns in diameter. Carbon fiber shafts are widely used in the automotive, aerospace, and marine industries, serving as transmission system components characterized by lightweight, high strength, high stiffness, and wear resistance.

[0003] After the carbon fiber shaft is produced, a part of it needs to be cut for quality inspection. Since the carbon fiber shaft is woven, when the cutting blade rotates rapidly and comes into contact with the carbon fiber shaft, the carbon fiber shaft will be squeezed and deformed. It is easy for the blade to accidentally cut the end faces of the carbon fiber shaft at both ends of the incision when cutting, resulting in missing corners.

[0004] Therefore, it is necessary to provide a cutting device that can prevent carbon fiber shaft defects to solve the above problems. Summary of the Invention

[0005] Based on the above problems existing in the prior art, the purpose of this application is to provide a cutting device for preventing carbon fiber shaft defects, so as to solve the problems raised in the above background technology.

[0006] The technical solution adopted by the present application to solve its technical problem is: a cutting device for preventing carbon fiber shaft defects, comprising a cutting unit and a blade for cutting;

[0007] The clamping unit comprises a front clamping group and a rear clamping group which can move closer to or away from each other, the front clamping group including a front stopper;

[0008] The left supporting unit includes a left expansion sleeve and a left positioning column. The left end of the left positioning column is fixedly connected to the frame. The left expansion sleeve includes a left inner ring and a left outer ring. The right end of the left inner ring has a left plug-in section with a smaller left end and a larger right end. The left outer ring has a left tapered hole matching the left plug-in section. The right end of the left positioning column is fixedly connected to the left inner ring. The left plug-in section of the left inner ring is inserted into the left tapered hole. The left outer ring is located on the left side of the blade and between the blade and the left inner ring. The carbon fiber sleeve is on the left expansion sleeve.

[0009] and a left self-expanding structure comprising a trigger assembly, a left hydraulic pipe, and a left hydraulic chamber provided in the left positioning column, wherein a left working chamber is formed at the right end of the left hydraulic chamber, and a left push rod is slidably mounted on the right end of the left working chamber in the left-right direction;

[0010] The trigger assembly includes a trigger button and a piston pipe opened in the front block, one end of the trigger button protrudes from the front clamping surface of the front block, and the other end is fixed with a piston slidably installed in the piston pipe. One end of the left hydraulic pipe is connected to the left hydraulic chamber, and the other end is connected to the piston pipe. When the front clamping group and the rear clamping group approach each other to clamp the carbon fiber shaft, the trigger button moves toward the piston pipe, and the piston pushes the liquid medium in the piston pipe to flow to the left working chamber, so that the left push rod pushes the left outer ring to the right.

[0011] Furthermore, a left protrusion extends from the right end of the left positioning column, the left protrusion is coaxially arranged with the left expansion sleeve, and the rightmost end of the left outer ring protrudes from the left protrusion;

[0012] The left inner ring is elastically and telescopically connected with a left tension spring along the circumferential direction. The left tension spring is elastically and telescopically connected to the outer surface of one end of the left outer ring close to the left push rod. When the left push rod pushes the left outer ring to slide to the right, the left tension spring is stretched.

[0013] Furthermore, the device also includes a workbench fixed to the middle part of the frame, and the front clamping group and the rear clamping group are both arranged on the workbench;

[0014] A slide groove is provided on the top of the workbench, a through groove is connected to the left side of the slide groove, the front clamping group is arranged at the front end of the slide groove, the rear clamping group is arranged at the rear end of the slide groove, and the front stopper is slidably connected to the slide groove.

[0015] Furthermore, the front clamping group also includes a front screw threadedly connected to the front end of the workbench, and the front screw is rotatably connected to the back side of the front stopper to push the front stopper to move in the slide groove. The rear clamping group includes a rear screw and a rear stopper threadedly connected to the rear end of the workbench, and the rear screw is rotatably connected to the back side of the rear stopper to push the rear stopper to move in the slide groove.

[0016] Furthermore, it also includes a right supporting unit, the blade is located between the left supporting unit and the right supporting unit, the right end of the frame is fixedly connected to the side slide rail, the right supporting unit includes a bracket and a right expansion sleeve slidably connected to the side slide rail, one side of the bracket is fixedly connected to a right positioning column, the right expansion sleeve includes a right inner ring and a right outer ring, the left end of the right inner ring has a right plug-in section with a right smaller and left larger cone, the right outer ring has a right tapered hole matching the right plug-in section, the left end of the right positioning column is fixedly connected to the right inner ring, the right plug-in section of the right inner ring is inserted in the right tapered hole, the right outer ring is located on the right side of the blade and between the blade and the right inner ring;

[0017] A right hydraulic cavity is provided in the right positioning column, a right working cavity is formed at the left end of the right hydraulic cavity, a right push rod is slidably mounted on the left end of the right working cavity along the left and right directions, and the right push rod is opposite to the right outer ring.

[0018] Furthermore, a right protrusion extends from the left end of the right positioning column, the right protrusion is coaxially arranged with the right expansion sleeve, and the leftmost end of the right outer ring protrudes from the right protrusion;

[0019] The right inner ring is elastically and telescopically connected with a right tension spring in the circumferential direction. The right tension spring is elastically and telescopically connected to the outer surface of one end of the right outer ring close to the right push rod. When the right push rod pushes the right outer ring to slide to the left, the right tension spring is stretched. The right tension spring and the right push rod are arranged at intervals along the circumference of the right expansion sleeve.

[0020] Furthermore, a through hole is provided on the upper surface of the bracket near the side slide rail, a cavity located at the top of the side slide rail is provided on the left side of the through hole, and a bracket hydraulic cavity connected to the right hydraulic cavity is provided on the right side, and a slider is dynamically sealed at one end of the bracket hydraulic cavity near the through hole, a clamping strip is slidably connected in the cavity, and a rubber part is provided at one end of the clamping strip near the side slide rail, a bolt is threadedly connected in the through hole, and the bolt abuts against the slider and the clamping strip located in the through hole.

[0021] Furthermore, an upper slide rail is fixedly connected to the right side of the top surface of the frame, a support block is slidably connected to the upper slide rail, and a rubber layer supporting the right positioning column is provided on the top of the support block.

[0022] Furthermore, the distance between the blade and the left outer ring and the right outer ring during cutting is 2 to 5 mm.

[0023] The beneficial effects of the present application are as follows: the present application provides a cutting device for preventing carbon fiber shaft defects, which is provided with a left expansion sleeve and a right expansion sleeve to support the cut portion of the carbon fiber shaft, so that the inner wall of the carbon fiber shaft is supported by the expansion sleeve, thereby reducing the deformation of the carbon fiber shaft and preventing serious deformation of the carbon fiber shaft during cutting;

[0024] By setting a trigger button to cooperate with the fixture that clamps the carbon fiber shaft, after the carbon fiber shaft is clamped in place, the expansion sleeve automatically abuts against the inner wall of the carbon fiber shaft, saving work steps and thus improving work efficiency;

[0025] By arranging a bolt at the bottom of the bracket, after the bracket reaches the corresponding position, the bolt is tightened to make the clamping strip and the slider contact each other and move to both sides respectively. The clamping strip is pressed on the side slide rail to prevent the bracket from moving. The movement of the slider pushes the medium in the hydraulic cavity of the bracket to flow so that the right expansion sleeve contacts the inner wall of the carbon fiber shaft. The operation is simple and convenient.

[0026] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0028] Figure 1 This is an overall schematic diagram of this application;

[0029] Figure 2 A schematic diagram of the rack for this application;

[0030] Figure 3 For this application Figure 2 Enlarged schematic diagram of area A in the middle;

[0031] Figure 4 This is a schematic diagram of the front clamping group of the present application;

[0032] Figure 5 A schematic diagram of the front stopper of this application;

[0033] Figure 6 A side view of the rack of this application;

[0034] Figure 7 For this application Figure 6 Enlarged schematic diagram of area B in the middle;

[0035] Figure 8 For this application Figure 6 Enlarged schematic diagram of area C in the middle;

[0036] Figure 9 This is an overall schematic diagram of the expansion sleeve of this application;

[0037] Figure 10 This is a schematic cross-sectional view of the expansion sleeve of this application;

[0038] Figure 11 For this application Figure 6 Enlarged schematic diagram of the middle D area;

[0039] Figure 12 This is a schematic diagram of the carbon fiber shaft clamping of this application;

[0040] Figure 13 For this application Figure 12 Enlarged schematic diagram of the middle E area;

[0041] Figure 14 For this application Figure 12 Enlarged schematic diagram of the middle F area;

[0042] Among them, the reference numerals in the figures are:

[0043] 1. Frame; 11. Upper slide rail; 12. Side slide rail; 13. Support block; 131. Rubber layer; 2. Workbench; 21. Slide groove; 22. Through groove; 3. Front clamping group; 31. Front stopper; 311. Trigger button; 312. Piston; 313. Piston pipe; 3131. Piston chamber; 314. Front clamping surface; 32. Front screw; 4. Rear clamping group; 41. Rear stopper; 42. Rear screw; 5. Left support unit; 51. Left hydraulic pipe; 52. Left positioning column; 521. Left protrusion; 522. Left hydraulic chamber; 523. Left working chamber; 524. Left push rod; 53. Left expansion sleeve; 531. Left outer ring; 5 311. Left tapered hole; 532. Left inner ring; 5321. Left plug-in section; 54. Left tension spring; 6. Right support unit; 61. Right positioning column; 611. Right protrusion; 612. Right hydraulic chamber; 613. Right working chamber; 614. Right push rod; 62. Right expansion sleeve; 621. Right outer ring; 6211. Right tapered hole; 622. Right inner ring; 6221. Right plug-in section; 63. Right tension spring; 64. Slider; 65. Pressing strip; 651. Rubber part; 66. Bolt; 67. Bracket; 671. Bracket hydraulic chamber; 672. Cavity; 673. Through hole; 7. Cutting unit; 71. Blade; 8. Carbon fiber shaft. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0046] like Figure 1-14 As shown, the present application provides a technical solution: a cutting device for preventing carbon fiber shaft defects, comprising a cutting unit 7 mounted on the rear side of a frame 1 and having a blade 71 for cutting a carbon fiber shaft 8;

[0047] The clamping unit comprises a front clamping group 3 and a rear clamping group 4 which can move closer to or away from each other, and the front clamping group 3 comprises a front stopper 31;

[0048] The left support unit 5 includes a left expansion sleeve 53 and a left positioning column 52. The left end of the left positioning column 52 is fixedly connected to the frame 1. The left expansion sleeve 53 includes a left inner ring 532 and a left outer ring 531. The right end of the left inner ring 532 has a tapered left plug-in section 5321 that is smaller on the left and larger on the right. The inner ring wall of the left outer ring 531 forms a left tapered hole 5311 that matches the left plug-in section 5321. The right end of the left positioning column 52 is fixedly connected to the left inner ring 532. The left plug-in section 5321 of the left inner ring 532 is inserted into the left tapered hole 5311. The left outer ring 531 is located on the left side of the blade 71 and between the blade 71 and the left inner ring 532. The carbon fiber shaft 8 is sleeved on the left expansion sleeve 53.

[0049] The left self-expanding structure comprises a trigger assembly, a left hydraulic pipe 51, and a left hydraulic chamber 522 defined within the left positioning column 52. A left working chamber 523 is formed at the right end of the left hydraulic chamber 522. A left push rod 524 is slidably mounted on the right end of the left working chamber 523 in the left-right direction. The left push rod 524 is directly opposite the left outer ring 531.

[0050] The trigger assembly includes a trigger button 311 and a piston pipe 313 installed in the front block 31. One end of the piston pipe 313 protrudes from the side of the front block 31 close to the left hydraulic pipe 51. A piston chamber 3131 is provided in the piston pipe 313. One end of the trigger button 311 protrudes from the front clamping surface 314 of the front block 31, and the other end is fixed with a piston 312 slidably installed in the piston chamber 3131. One end of the left hydraulic pipe 51 is communicated with the left hydraulic chamber 522, and the other end is connected to the piston pipe 313 and communicated with the piston chamber 3131. When the front clamping group 3 and the rear clamping group 4 move closer to each other and clamp the carbon fiber shaft 8, the trigger button 311 moves inward toward the piston pipe 313, and the piston 312 pushes the liquid medium in the piston chamber 3131 to flow to the left working chamber 523, so that the left push rod 524 pushes the left outer ring 531 to the right.

[0051] A left protrusion 521 extends from the right end of the left positioning post 52. The left protrusion 521 is coaxially arranged with the left expansion sleeve 53. The rightmost end of the left outer ring 531 protrudes from the left protrusion 521.

[0052] A left tension spring 54 is elastically and telescopically connected to the left inner ring 532 in the circumferential direction. The left tension spring 54 is elastically and telescopically connected to the outer surface of one end of the left outer ring 531 close to the left push rod 524. When the left push rod 524 pushes the left outer ring 531 to slide to the right, the left tension spring 54 generates elastic force and is stretched. The left tension spring 54 and the left push rod 524 are arranged at intervals along the circumference of the left expansion sleeve 53.

[0053] The device also includes a workbench 2 fixed to the middle part of the frame 1, and the front clamping group 3 and the rear clamping group 4 are both arranged on the workbench 2;

[0054] A slide groove 21 is provided on the top of the workbench 2, and a through groove 22 is connected to the left side of the slide groove 21. The front clamping group 3 is arranged at the front end of the slide groove 21, and the rear clamping group 4 is arranged at the rear end of the slide groove 21. The front stopper 31 is slidably connected to the slide groove 21.

[0055] The front clamping group 3 also includes a front screw 32 threadedly connected to the front end of the workbench 2, and the front screw 32 is rotatably connected to the back side of the front stopper 31 to push the front stopper 31 to move in the slide groove 21. The rear clamping group 4 includes a rear screw 42 and a rear stopper 41 threadedly connected to the rear end of the workbench 2, and the rear screw 42 is rotatably connected to the back side of the rear stopper 41 to push the rear stopper 41 to move in the slide groove 21.

[0056] The frame 1 further includes a right supporting unit 6, wherein the blade 71 is located between the left supporting unit 5 and the right supporting unit 6, and the right end of the frame 1 is fixedly connected to the side slide rail 12. The right supporting unit 6 includes a bracket 67 and a right expansion sleeve 62 that are slidably connected to the side slide rail 12. One side of the bracket 67 is fixedly connected to a right positioning column 61. The right expansion sleeve 62 includes a right inner ring 622 and a right outer ring 621. The left end of the right inner ring 622 has a right plug-in section 6221 that is tapered and smaller on the right and larger on the left. The inner ring wall of the right outer ring 621 forms a right tapered hole 6211 that matches the right plug-in section 6221. The left end of the right positioning column 61 is fixedly connected to the right inner ring 622. The right plug-in section 6221 of the right inner ring 622 is inserted into the right tapered hole 6211. The right outer ring 621 is located on the right side of the blade 71 and between the blade 71 and the right inner ring 622.

[0057] A right hydraulic chamber 612 is defined in the right positioning column 61 , a right working chamber 613 is formed at the left end of the right hydraulic chamber 612 , a right push rod 614 is slidably mounted on the left end of the right working chamber 613 along the left-right direction, and the right push rod 614 is directly opposite to the right outer ring 621 .

[0058] A right protrusion 611 extends from the left end of the right positioning post 61. The right protrusion 611 is coaxially arranged with the right expansion sleeve 62. The leftmost end of the right outer ring 621 protrudes from the right protrusion 611.

[0059] A right tension spring 63 is elastically and telescopically connected to the right inner ring 622 in the circumferential direction. The right tension spring 63 is elastically and telescopically connected to the outer surface of one end of the right outer ring 621 close to the right push rod 614. When the right push rod 614 pushes the right outer ring 621 to slide to the left, the right tension spring 63 generates elastic force and is stretched. The right tension spring 63 and the right push rod 614 are arranged at intervals along the circumference of the right expansion sleeve 62.

[0060] A through hole 673 is provided on the upper surface of the bracket 67 near the side slide rail 12, and a cavity 672 located at the top of the side slide rail 12 is provided on the left side of the through hole 673, and a bracket hydraulic chamber 671 connected to the right hydraulic chamber 612 is provided on the right side. The end of the bracket hydraulic chamber 671 near the through hole 673 is dynamically sealed and connected to the slider 64, and a clamping strip 65 is slidably connected in the cavity 672. The end of the clamping strip 65 near the side slide rail 12 is a rubber part 651, and a bolt 66 is threadedly connected to the through hole 673, and the bolt 66 abuts against the slider 64 and the clamping strip 65 located in the through hole 673.

[0061] An upper slide rail 11 is fixedly connected to the right side of the top surface of the frame 1 , a support block 13 is slidably connected to the upper slide rail 11 , and a rubber layer 131 supporting the right positioning column 61 is provided on the top of the support block 13 .

[0062] The distance between the blade 71 and the left outer ring 531 and the right outer ring 621 during cutting is 2 to 5 mm.

[0063] In one embodiment, how to cut a small section of the end of a carbon fiber shaft

[0064] Specifically, fix the left inner ring 532 on the left protrusion 521, nest the left outer ring 531 on the left inner ring 532, so that the left plug-in section 5321 is located in the left conical hole 5311, align the left push rod 524 with the left outer ring 531, and insert one end of the carbon fiber shaft 8 along the left expansion sleeve 53 into the left positioning column 52 away from the left protrusion 521 until the part to be cut is directly below the blade 71.

[0065] After adjusting the rear screw 42, the rear stopper 41 is driven to slide in the slide groove 21 until it abuts against the rear and lower part of the carbon fiber shaft 8. Then, by adjusting the front screw 32, the front stopper 31 is driven to slide in the slide groove 21 until the front clamping surface 314 abuts against the front and lower part of the carbon fiber shaft 8. At this time, the trigger button 311 is abutted by the carbon fiber shaft 8 and moves toward the direction close to the front stopper 31, driving the piston 312 to push the hydraulic oil in the piston chamber 3131 to flow forward. The hydraulic oil passes through the left hydraulic pipe 51 and the left hydraulic chamber 522 in turn, and is diverted to the upper and lower left working chambers 523. The pressure of the hydraulic oil pushes the left push rod 524 close to the left outer ring 531.

[0066] When the left push rod 524 pushes the left outer ring 531 to the right, the left conical hole 5311 moves to the right along the left plug-in section 5321, so that the diameter of the left outer ring 531 gradually increases, so that the outer peripheral wall of the left outer ring 531 abuts against the inner peripheral wall of the carbon fiber shaft 8, supporting the part of the carbon fiber shaft 8 close to the cutting point, so that it will not be deformed during cutting. At the same time, the left tension spring 54 has elastic potential energy due to the tension generated by the movement of the left outer ring 531.

[0067] The control center controls the blade 71 to cut the carbon fiber shaft 8. After the cutting is completed, the blade 71 is lifted, and the rear lead screw 42 is adjusted to drive the rear stopper 41 to slide in the slide groove 21 away from the carbon fiber shaft 8. Then, the front lead screw 32 is adjusted to drive the front stopper 31 to slide in the slide groove 21 away from the carbon fiber shaft 8. At this time, the front clamping surface 314 is disengaged from the carbon fiber shaft 8, the trigger button 311 is no longer resisted by the carbon fiber shaft 8 and the elastic potential energy of the left tension spring 54 is released, pulling the left push rod 524 back, and the diameter of the left outer ring 531 becomes smaller, and it does not resist the inner wall of the carbon fiber shaft 8. The hydraulic oil in the pipeline refluxes, pushing the piston 312 out, so that the trigger button 311 protrudes from the front stopper 31, and the carbon fiber shaft 8 can be removed.

[0068] In another embodiment, the device can also cut the carbon fiber shaft according to different needs.

[0069] Specifically, when it is necessary to retain the cut-off section of the carbon fiber shaft 8, fix the left inner ring 532 on the left protrusion 521, nest the left outer ring 531 on the left inner ring 532, so that the left plug-in section 5321 is located in the left tapered hole 5311, align the left push rod 524 with the left outer ring 531, insert one end of the carbon fiber shaft 8 along the left expansion sleeve 53 into the end of the left positioning column 52 away from the left protrusion 521, fix the right inner ring 622 on the right protrusion 611, nest the right outer ring 621 on the right inner ring 622, so that the right plug-in section 6221 is located in the right tapered hole 6211, and align the right push rod 614 with the right outer ring 621.

[0070] The sliding bracket 67 places the right positioning column 61 and the left positioning column 52 in a concentric position, and moves the carbon fiber shaft 8 on the left positioning column 52 toward the right positioning column 61 until the part to be cut is directly below the blade 71. In the manner of the above embodiment, the cutting part of the carbon fiber shaft 8 on the left positioning column 52 is supported by the left expansion sleeve 53.

[0071] Tighten the bolt 66 toward the top of the through hole 673. After being supported by the bolt 66, the slider 64 moves to the right, pushing the hydraulic oil in the bracket hydraulic chamber 671 to flow. The hydraulic oil passes through the right hydraulic chamber 612 and is divided into the upper and lower right working chambers 613. The pressure of the hydraulic oil pushes the right push rod 614 toward the right outer ring 621.

[0072] When the right push rod 614 pushes the right outer ring 621 to the left, the right tapered hole 6211 moves to the left along the right plug-in section 6221, so that the diameter of the right outer ring 621 gradually increases, so that the outer peripheral wall of the right outer ring 621 abuts against the inner peripheral wall of the carbon fiber shaft 8, supporting the part of the carbon fiber shaft 8 close to the cutting point, so that it will not be deformed during cutting. At the same time, the right tension spring 63 has elastic potential energy due to the tension generated by the movement of the right outer ring 621, and the clamping strip 65 is abutted by the bolt 66 and moves toward the direction close to the side slide rail 12 until the rubber part 651 abuts against the outer wall of the side slide rail 12 to prevent the bracket 67 from moving.

[0073] The blade 71 is controlled by the control center to cut the carbon fiber shaft 8. After the cutting is completed, the blade 71 is lifted, and the carbon fiber shaft 8 and the left expansion sleeve 53 are made active in the manner of the above embodiment. The bolt 66 is screwed away from the top of the through hole 673, and the elastic potential energy of the right tension spring 63 is released, pushing the right push rod 614 back, and the hydraulic oil in the pipeline flows back. The slider 64 returns to the initial position, and the volume of the right outer ring 621 becomes smaller and does not abut against the inner wall of the carbon fiber shaft 8. At this time, the bracket 67 is removed and the carbon fiber shaft 8 on the left positioning column 52 and the right positioning column 61 are taken out respectively.

[0074] To sum up, the device supports the cutting part of the carbon fiber shaft 8 by providing a left expansion sleeve 53 and a right expansion sleeve 62 to prevent the carbon fiber shaft 8 from being severely deformed during cutting. At the same time, it cooperates with the clamp that clamps the carbon fiber shaft 8 to improve work efficiency. It solves the technical problem that when the cutting blade rotates rapidly and contacts the carbon fiber shaft, the carbon fiber shaft will be squeezed and deformed, which makes it easy for the blade to mistakenly cut the end faces of the carbon fiber shaft at both ends of the incision when cutting, resulting in missing corners.

[0075] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A cutting device for preventing carbon fiber shaft defects, characterized by: comprising a cutting unit having a blade for cutting; The clamping unit comprises a front clamping group and a rear clamping group which can move closer to or away from each other, the front clamping group including a front stopper; The left supporting unit includes a left expansion sleeve and a left positioning column. The left end of the left positioning column is fixedly connected to the frame. The left expansion sleeve includes a left inner ring and a left outer ring. The right end of the left inner ring has a left plug-in section with a smaller left end and a larger right end. The left outer ring has a left tapered hole matching the left plug-in section. The right end of the left positioning column is fixedly connected to the left inner ring. The left plug-in section of the left inner ring is inserted into the left tapered hole. The left outer ring is located on the left side of the blade and between the blade and the left inner ring. The carbon fiber sleeve is on the left expansion sleeve. and a left self-expanding structure comprising a trigger assembly, a left hydraulic pipe, and a left hydraulic chamber provided in the left positioning column, wherein a left working chamber is formed at the right end of the left hydraulic chamber, and a left push rod is slidably mounted on the right end of the left working chamber in the left-right direction; The trigger assembly includes a trigger button and a piston pipe opened in the front block, one end of the trigger button protrudes from the front clamping surface of the front block, and the other end is fixed with a piston slidably installed in the piston pipe. One end of the left hydraulic pipe is connected to the left hydraulic chamber, and the other end is connected to the piston pipe. When the front clamping group and the rear clamping group approach each other to clamp the carbon fiber shaft, the trigger button moves toward the piston pipe, and the piston pushes the liquid medium in the piston pipe to flow to the left working chamber, so that the left push rod pushes the left outer ring to the right.

2. The cutting device for preventing carbon fiber shaft defects according to claim 1, characterized in that: A left protrusion extends from the right end of the left positioning column. The left protrusion is coaxially arranged with the left expansion sleeve, and the rightmost end of the left outer ring protrudes from the left protrusion. The left inner ring is elastically and telescopically connected with a left tension spring along the circumferential direction. The left tension spring is elastically and telescopically connected to the outer surface of one end of the left outer ring close to the left push rod. When the left push rod pushes the left outer ring to slide to the right, the left tension spring is stretched.

3. The cutting device for preventing carbon fiber shaft defects according to claim 1, characterized in that: The device also includes a workbench fixed to the middle part of the frame, and the front clamping group and the rear clamping group are both arranged on the workbench; A slide groove is provided on the top of the workbench, a through groove is connected to the left side of the slide groove, the front clamping group is arranged at the front end of the slide groove, the rear clamping group is arranged at the rear end of the slide groove, and the front stopper is slidably connected to the slide groove.

4. The cutting device for preventing carbon fiber shaft defects according to claim 3, characterized in that: The front clamping group also includes a front screw threadedly connected to the front end of the workbench, and the front screw is rotatably connected to the back side of the front stopper to push the front stopper to move in the slide groove. The rear clamping group includes a rear screw and a rear stopper threadedly connected to the rear end of the workbench, and the rear screw is rotatably connected to the back side of the rear stopper to push the rear stopper to move in the slide groove.

5. The cutting device for preventing carbon fiber shaft defects according to claim 1, characterized in that: The cam is further configured to move the blade upwards and downwards, wherein the cam is secured to the blade's center of gravity and is adapted to engage with the blade's center of gravity. The cam is secured to the blade's center of gravity and is adapted to engage with the blade's center of gravity. The cam is secured to the blade's center of gravity and is adapted to engage with the blade's center of gravity. A right hydraulic cavity is provided in the right positioning column, a right working cavity is formed at the left end of the right hydraulic cavity, a right push rod is slidably mounted on the left end of the right working cavity along the left and right directions, and the right push rod is opposite to the right outer ring.

6. The cutting device for preventing carbon fiber shaft defects according to claim 5, characterized in that: A right protrusion extends from the left end of the right positioning column. The right protrusion is coaxially arranged with the right expansion sleeve, and the leftmost end of the right outer ring protrudes from the right protrusion. The right inner ring is elastically and telescopically connected with a right tension spring in the circumferential direction. The right tension spring is elastically and telescopically connected to the outer surface of one end of the right outer ring close to the right push rod. When the right push rod pushes the right outer ring to slide to the left, the right tension spring is stretched. The right tension spring and the right push rod are arranged at intervals along the circumference of the right expansion sleeve.

7. The cutting device for preventing carbon fiber shaft defects according to claim 5, characterized in that: A through hole is provided on the upper surface of the bracket near the side slide rail, a cavity located at the top of the side slide rail is provided on the left side of the through hole, and a bracket hydraulic cavity connected to the right hydraulic cavity is provided on the right side, and a slider is dynamically sealed at one end of the bracket hydraulic cavity near the through hole, a clamping strip is slidably connected in the cavity, and a rubber part is provided at one end of the clamping strip near the side slide rail, a bolt is threadedly connected in the through hole, and the bolt abuts against the slider and the clamping strip located in the through hole.

8. The cutting device for preventing carbon fiber shaft defects according to claim 1, characterized in that: An upper slide rail is fixedly connected to the right side of the top surface of the frame, a support block is slidably connected to the upper slide rail, and a rubber layer supporting the right positioning column is provided on the top of the support block.

9. The cutting device for preventing carbon fiber shaft defects according to claim 5, characterized in that: The distance between the blade and the left outer ring and the right outer ring during cutting is 2 to 5 mm.

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