All-terrain vehicle frame laser cutting bevel processing equipment and processing method

Abstract

The application discloses a full terrain vehicle frame laser cutting groove processing equipment and processing method, which comprises a fixed disc, a circular track and a scale piece are fixed on the upper end of the fixed disc, and the fixed disc, the circular track and the scale piece are coaxial; clamping parts, at least two groups are provided, and the clamping parts are slidably arranged on the circular track, and a group of the clamping parts clamps a pipe to be processed; a laser emission part is clamped in another group of the clamping parts, and the laser emission part comprises a replacement end clamped by another group of the clamping parts, a telescopic sleeve one and a telescopic sleeve two, and a laser emitter; wherein the laser emitter is located at an eccentric position of the replacement end and can rotate with the replacement end, and the axis of the replacement end and the axis of the pipe to be processed both extend through the center of the fixed disc. Compared with the prior art, the coaxial fixed disc, the circular track and the scale piece enable the pipe to be processed and the laser emission part to independently slide and position around the same center, and an operator can quickly and quantitatively set the required groove angle according to the scale piece.

Description

Technical Field

[0001] This invention relates to the field of laser cutting equipment technology, and in particular to beveling equipment and processing methods for laser cutting of all-terrain vehicle frames. Background Technology

[0002] Currently, all-terrain vehicle frames are generally constructed by welding high-strength metal tubing. In typical T-type, Y-type, or cross-type joint structures, the end of one metal tubing needs to intersect and connect with the middle of another continuous metal tubing to form a spatial tube node.

[0003] For pipe end beveling, existing technologies mainly employ dedicated intersecting line cutting machines or CNC pipe cutting machines. However, their ability to control the beveling angle is very limited. Most equipment can only cut fixed right-angled end faces or simple bevels, unable to set continuously varying beveling angles at different positions along the intersecting line according to welding process requirements, making it difficult to meet the welding requirements of all-terrain vehicle frames. For example, patent CN210132166U, entitled "A Laser Intersecting Line Cutting Machine," proposes using a cam mechanism to generate the intersecting line trajectory, with a gear transmission assembly synchronously transmitting pipe rotation to the cam, and a laser cutting head cooperating with the pipe rotation to perform intersecting line cutting. This patent, too, can only cut fixed right-angled end faces or simple bevels, making it difficult to meet the requirements for beveling at different angles. Summary of the Invention

[0004] In view of the aforementioned problem that existing equipment has limited bevel cutting angles, this invention provides bevel processing equipment and methods for laser cutting of all-terrain vehicle frames.

[0005] The technical solution adopted by this invention to solve the above-mentioned technical problems is: a beveling processing equipment for laser cutting of all-terrain vehicle frames, comprising: A fixed plate, with a circular track and scale plate fixed at the upper end of the fixed plate, and the fixed plate, circular track and scale plate are all coaxial; The clamping part is provided in at least two sets, both of which are slidably arranged on a circular track, with one set of clamping parts holding the tube to be processed. The laser emitting part is clamped in another set of clamping parts, which includes a replacement end clamped by the other set of clamping parts, a retractable sleeve one and a sleeve two, and a laser emitting unit. The laser emitter is located at an eccentric position on the replacement end and can rotate with the replacement end. The axis of the replacement end and the axis of the tube to be processed both extend through the center of the fixed plate. The laser emitter is adjusted to its position on the circular track by another set of clamping parts to form different angles with the tube to be processed.

[0006] A further preferred embodiment of the present invention is: the clamping part includes: The V-shaped bracket has a V-shaped opening at the top, which is used to hold the tube to be processed or the end to be replaced. A sliding assembly, installed at the lower end of the V-shaped frame, is used to cooperate with a circular track, allowing the V-shaped frame to change position along the circular track; The clamping frame, located at the upper end of the V-shaped frame, moves downward to hold the tube to be processed or the end to be replaced. The adjusting shaft is engaged with the V-shaped bracket and threadedly connected to the clamping frame. The height position of the clamping frame can be changed by rotating the adjusting shaft.

[0007] A further preferred embodiment of the present invention is: sliding openings are provided on both sides of the V-shaped frame, and sheet metal sheets are fixed on both sides of the V-shaped frame; The lower end of the adjusting shaft is a circular plate structure with a diameter larger than the adjusting shaft. The adjusting shaft passes through the V-shaped frame from bottom to top. The circular plate structure is locked with the V-shaped frame. The adjusting shaft passes through the corresponding sheet metal plate upwards. The clamping frame is slidably set in the corresponding sliding opening on both sides.

[0008] A further preferred embodiment of the present invention is: the sliding component includes: The upper plate is fixed to the lower end of the V-shaped frame, and its edge has a downward-through and threaded limiting bolt; The lower plate is divided into two parts, both of which are fixed to the lower end of the upper plate. The lower plate has a slot that fits into the circular track.

[0009] A further preferred embodiment of the present invention is: the replacement end includes: The adjusting tube is clamped in another set of clamping parts. The adjusting tube is replaceable and has the same diameter as the tube to be processed. A sleeve is fitted onto the end of the regulating tube, with a limit end threaded to its outer side, which is pressed against the regulating tube. The polygonal shaft is fixed to the end of the sleeve and is set off-center to be connected and locked with the sleeve.

[0010] A further preferred embodiment of the present invention is as follows: sleeve one and sleeve two are sleeved together, sleeve two has an inner spring for support, the laser emitter is fixed at the end of sleeve two, and when the adjusting tube is manually controlled to rotate, the laser emitter moves in a circular motion accordingly.

[0011] A further preferred embodiment of the present invention is as follows: the output end of the laser emitter is provided with circumferentially distributed mounting holes, and a protruding shaft is inserted into each of the corresponding mounting holes. The outer end of the protruding shaft has a rotating hole, and a rotating ball is rotatably installed in the rotating hole. The rotating ball contacts the outer wall of the tube to be processed.

[0012] A further preferred embodiment of the present invention is: a baffle is provided on the fixed disk, and the baffle is located opposite the output end of the laser emitting part.

[0013] A further preferred embodiment of the present invention is: the baffle is a thick metal plate, and the baffle is installed on the upper end of the fixed disk by magnetic attraction.

[0014] The processing method for laser cutting and beveling of all-terrain vehicle frames includes the following steps: Step 1: Clamping and fixing. Clamp the tube to be processed in one set of clamping parts, and clamp the replacement end of the laser emitting part in another set of clamping parts. The axis of the replacement end and the axis of the tube to be processed both extend through the center of the fixed plate. Step 2: Bevel angle setting. Read the required bevel angle value according to the scale plate, slide the clamping part of the laser emitter along the circular track, and then fix it. At the same time, fix the clamping part of the tube to be processed on the circular track to complete the quantitative setting of the angle between the tube to be processed and the laser emitter. Step 3: Laser cutting. Adjust the corresponding clamping part so that the replacement end is in a rotatable and retractable state. Manually rotate the replacement end so that the laser emitter makes a circular motion around the axis of the replacement end. The laser emitter performs laser cutting on the wall of the tube to be processed. During the cutting process, sleeve one and sleeve two automatically extend and retract with the undulation of the outer wall of the tube to be processed. The output end of the laser emitter keeps dynamically close to the outer wall of the tube to be processed. Step 4: Reversing the cutting direction. After cutting one side of the tube to be processed, release the clamping part holding the laser emitter, slide the clamping part along the circular track to the opposite position to the position in Step 3 and lock it, then execute Step 3 again. Step 5: Residual processing. Remove the cut tube and manually assist in cutting or recutting the remaining connection parts at the top and bottom ends that were not completely cut in Step 4 to obtain the end of the tube with a complete bevel.

[0015] Compared with the prior art, the advantages of the present invention are as follows: 1. By using the coaxiality of the fixed plate, circular track and scale plate, the tube to be processed and the laser emitting part can be independently slid and positioned around the same center. The operator can quickly and quantitatively set the required bevel angle according to the scale plate.

[0016] 2. The laser emitter can be made to move in a circular motion by manually rotating the replacement end. It can complete the annular beveling of the pipe opening without the need for a complex CNC system. The structure is simple and the cost is low. After the laser emitter is cut, the position is set to the opposite side, and the other side of the pipe to be processed can be processed to form the bevel.

[0017] 3. An internal spring is installed between sleeve one and sleeve two, so that the laser emitter can automatically extend and retract with the concave and convex changes of the outer contour of the tube wall during rotation. At the same time, manual control of the replacement end is added to keep the laser output end close to the tube wall so that the cutting is completed. Attached Figure Description

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a top view of the structure of the laser emitting part of the present invention after adjusting its position; Figure 4 This is a schematic diagram of the disassembled structure of the clamping part of the present invention; Figure 5 This is a schematic diagram of the laser emitting part of the present invention; Figure 6 This is a schematic diagram of the end structure of the laser emitter of the present invention; Figure 7 This is a schematic diagram of the mating structure of the tube to be processed and the regulating tube according to the present invention; Figure 8 This is a schematic diagram of the main structure of the laser emitting part of the present invention. Figure 9 This is a schematic diagram of the main view of the pipe axis to be processed according to the present invention; Figure 10 This is a schematic diagram of the vertical structure of the tube to be processed and the laser emitter according to the present invention.

[0020] In the diagram: 1. Fixed plate; 2. Circular track; 3. Scale plate; 4. Clamping part; 41. V-shaped frame; 411. Slide opening; 412. Sheet metal sheet; 42. Sliding assembly; 421. Upper plate; 422. Limiting bolt; 423. Lower plate; 424. Slot; 43. Clamping frame; 44. Adjusting shaft; 5. Tube to be processed; 6. Laser emitting part; 61. Replacement end; 611. Adjusting tube; 612. Tube sleeve; 613. Polygonal shaft; 614. Limiting end; 62. Sleeve one; 63. Sleeve two; 64. Inner spring; 65. Laser emitter; 651. Mounting hole; 652. Protruding shaft; 653. Rotating hole; 654. Rotating ball; 7. Baffle. Detailed Implementation

[0021] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0022] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures. Example

[0023] This embodiment mainly describes the beveling equipment for laser cutting of all-terrain vehicle frames. Please refer to [link / reference needed]. Figures 1-10 Specifically, the equipment for laser cutting and beveling of all-terrain vehicle frames includes: Fixed disk 1, with a circular track 2 and scale plate 3 fixed at the upper end of fixed disk 1, and fixed disk 1, circular track 2 and scale plate 3 are all coaxial; The clamping part 4 is provided in at least two sets, both of which are slidably arranged on the circular track 2. One set of clamping parts 4 clamps the tube 5 to be processed. The laser emitting unit 6 is clamped in another set of clamping units 4, which includes a replacement end 61 clamped by the other set of clamping units 4, a retractable sleeve 62 and a sleeve 63, and a laser emitter 65. The laser emitter 65 is located at an eccentric position on the replacement end 61 and can rotate with the replacement end 61. The axis of the replacement end 61 and the axis of the tube to be processed 5 both extend through the center of the fixed plate 1. The laser emitting part 6 is adjusted to its position on the circular track 2 by another set of clamping parts 4 to form different angles with the tube to be processed 5.

[0024] Specifically, by setting a fixed plate 1, a circular track 2, and a scale plate 3, the tube to be processed 5 and the laser emitting part 6 can be angled around the same center to achieve the adjustment of the bevel angle. The laser emitter 65 is eccentrically set. When the replacement end 61 is manually rotated, the laser emitter 65 achieves circumferential motion to cut the tube to be processed 5. A retractable sleeve 1 62 and a sleeve 2 63 are set so that the laser emitter 65 can move relative to the outer wall of the tube to be processed 5, ensuring that the laser emitter 65 is close to the tube to be processed 5.

[0025] like Figure 4 The diagram shown is an exploded view of the clamping part 4, which includes: V-shaped bracket 41, with a V-shaped opening at the upper end, is used to hold the tube 5 to be processed or the replacement end 61 in place. The sliding component 42 is installed at the lower end of the V-shaped frame 41 and is used to cooperate with the circular track 2 to change the position of the V-shaped frame 41 along the circular track 2. The clamping frame 43 is located on the upper end of the V-shaped frame 41 and moves downward to clamp the tube 5 to be processed or the replacement end 61. The adjusting shaft 44 is engaged with the V-shaped bracket 41 and threadedly connected to the clamping bracket 43. The height position of the clamping bracket 43 can be changed by rotating the adjusting shaft 44.

[0026] Specifically, the V-shaped opening formed at the upper end of the V-shaped frame 41 is used to clamp the tube 5 to be processed or the replacement end 61. The clamping frame 43 lowers to limit the tube 5 to be processed or the replacement end 61, so that the axis of the tube 5 to be processed or the replacement end 61 points to the center of the fixed plate 1. It should be noted that when the clamping frame 43 limits the tube 5 to be processed, it is in a squeezing state. When the clamping frame 43 limits the replacement end 61, it only contacts the replacement end 61. The replacement end 61 can be extended, retracted and adjusted in the circumferential direction. The adjusting shaft 44 is rotatable and is threadedly connected to the clamping frame 43. Manually rotating the adjusting shaft 44 can drive the clamping frame 43 to move up and down.

[0027] like Figure 4 As shown, sliding openings 411 are provided on both sides of the V-shaped frame 41, and sheet metal sheets 412 are fixed on both sides of the V-shaped frame 41. The lower end of the adjusting shaft 44 is a circular plate structure with a diameter larger than that of the adjusting shaft 44. The adjusting shaft 44 passes through the V-shaped frame 41 from bottom to top. The circular plate structure is engaged with the V-shaped frame 41. The adjusting shaft 44 passes through the corresponding sheet metal plate 412 upwards. The clamping frame 43 is slidably arranged in the corresponding sliding opening 411 on both sides.

[0028] The clamping frame 43 is engaged with the corresponding sliding opening 411 on both sides, so that the clamping frame 43 can only move up and down. The sheet metal plate 412 is used to further limit the adjustment shaft 44, so that the adjustment shaft 44 is also limited near the upper position to avoid positional deviation.

[0029] like Figure 4 As shown, the sliding component 42 includes: The upper plate 421 is fixed to the lower end of the V-shaped frame 41, and its edge has a downward-through and threaded limiting bolt 422; The lower plate 423 is divided into two parts, both of which are fixed to the lower end of the upper plate 421. The lower plate 423 has a slot 424 that fits into the circular track 2. The slot 424 cooperates with the circular track 2.

[0030] Specifically, the limiting bolt 422 is threadedly connected to the upper plate 421. By tightening the limiting bolt 422, the limiting bolt 422 moves downward and presses against the circular track 2, thereby securing the clamping part 4. By disassembling the upper plate 421 and the lower plate 423, the slot 424 can be engaged with or separated from the circular track 2.

[0031] like Figure 5 As shown, the replacement end 61 includes: The adjusting tube 611 is clamped in another set of clamping parts 4. The adjusting tube 611 is replaceable and has the same diameter as the tube 5 to be processed. A sleeve 612 is fitted onto the end of the regulating tube 611, and a limit end 614 is threaded to its outer side, with the limit end 614 pressing against the regulating tube 611. The polygonal shaft 613 is fixed to the end of the sleeve 612. It is offset and used to engage with the sleeve 62.

[0032] Specifically, the adjusting tube 611 adopts a replaceable design with the same diameter as the tube 5 to be processed, and the sleeve 612 is also replaceable, so that the eccentricity of the laser emitter 65 relative to the rotation center always matches the diameter of the tube 5 to be processed, thereby ensuring accurate cutting start position. In other words, when the adjusting tube 611 is replaced with one with the same diameter as the tube 5 to be processed, the sleeve 612 needs to fit with the adjusting tube 611, and the output end of the laser emitter 65 on the polygonal shaft 613 rotates circumferentially as... Figure 8 As shown in the dashed circle, it should be noted that the distance between the polygonal axis 613 on the sleeve 612 and the edge of the sleeve 612 is constant.

[0033] like Figure 5 As shown, sleeve 1 62 is sleeved with sleeve 2 63. Sleeve 2 63 has an inner spring 64 for support. The laser emitter 65 is fixed to the end of sleeve 2 63. When the adjusting tube 611 is manually rotated, the laser emitter 65 moves in a circular motion.

[0034] Specifically, sleeve 62 and sleeve 63 form a telescopic guide sleeve. The inner spring 64 always applies an outward pushing force to sleeve 63, so that the laser emitter 65 can automatically follow the concave and convex changes of the outer contour of the tube wall during rotation. The manual rotation of the adjustment tube 611 drives sleeve 62 to rotate through the polygonal shaft 613, thereby driving the laser emitter 65 to perform circumferential scanning.

[0035] like Figure 6 As shown, the output end of the laser emitter 65 has circumferentially distributed mounting holes 651, and each mounting hole 651 has a protruding shaft 652. The outer end of the protruding shaft 652 has a rotating hole 653, and a rotating ball 654 is rotatably installed in the rotating hole 653. The rotating ball 654 is in contact with the outer wall of the tube 5 to be processed.

[0036] Specifically, multiple circumferentially distributed mounting holes 651 and protruding shafts 652 constitute a multi-contact support structure. The rotating ball 654 rolls on the tube wall to ensure that there is a gap between the output end of the laser emitter 65 and the tube wall, and that it can move smoothly in a circular motion. It should be noted that the operator can also adjust the adjusting tube 611 in real time to change the position of the output end of the laser emitter 65.

[0037] A baffle 7 is provided on the fixed plate 1, and the baffle 7 is located opposite the output end of the laser emitting unit 6.

[0038] The baffle 7 is a thick metal plate, and the baffle 7 is installed on the upper end of the fixed plate 1 by magnetic attraction.

[0039] Specifically, the baffle 7 is positioned on the opposite side of the tube 5 to be processed, whereby the laser beam may pass through. It is used to intercept excess laser energy or splashing molten slag. The magnetic installation method facilitates quick disassembly and adjustment of the baffle 7 position to meet the protection requirements of different tube diameters and cutting angles. Example

[0040] This embodiment mainly describes the processing method of laser cutting and beveling equipment for all-terrain vehicle frames. Please refer to [link / reference needed]. Figures 1-10 The details are as follows: The processing method for laser cutting and beveling of all-terrain vehicle frames includes the following steps: Step 1: Clamping and fixing. The tube 5 to be processed is clamped in a set of clamping parts 4, and the replacement end 61 of the laser emitting part 6 is clamped in another set of clamping parts 4. The axis of the replacement end 61 and the axis of the tube 5 to be processed both extend through the center of the fixed plate 1. Step 2: Setting the bevel angle. Read the required bevel angle value according to the scale plate 3. Slide the clamping part 4 of the laser emitter 6 along the circular track 2 and then fix it. At the same time, fix the clamping part 4 of the tube to be processed 5 on the circular track 2 to complete the quantitative setting of the angle between the tube to be processed 5 and the laser emitter 65. Step 3: Laser cutting. Adjust the corresponding clamping part 4 so that the replacement end 61 is in a rotatable and retractable state. Manually rotate the replacement end 61 so that the laser emitter 65 moves in a circle around the axis of the replacement end 61. The laser emitter 65 performs laser cutting on the wall of the tube 5 to be processed. During the cutting process, the sleeve 1 62 and the sleeve 2 63 automatically extend and retract with the undulation of the outer wall surface of the tube 5 to be processed. The output end of the laser emitter 65 keeps dynamically close to the outer wall of the tube 5 to be processed. Step 4: Reversing the cutting direction. After one side of the tube to be processed is cut, release the clamping part 4 that holds the laser emitting part 6, slide the clamping part 4 along the circular track 2 to the opposite position to the position in Step 3 and lock it, and then execute Step 3 again. Step 5: Residual processing. Remove the cut tube 5 and manually assist in cutting or recutting the remaining connection parts at the top and bottom ends that were not completely cut in Step 4 to obtain the end of the tube 5 with a complete bevel.

[0041] Working principle: First, clamping is performed. The tube 5 to be processed is clamped in a set of V-shaped frames 41. Adjust the clamping frame 43 to press down. The replacement end 61 of the laser emitting part 6 is clamped in another set of V-shaped frames 41, ensuring that the axis of the replacement end 61 also passes through the same center. It should be noted that the outer diameter of the adjusting tube 611 of the replacement end 61 is the same as that of the tube 5 to be processed. If the diameter of the tube 5 to be processed is changed, the adjusting tube 611 and the sleeve 612 need to be changed accordingly so that the output position of the laser emitter 65 coincides with the edge position of the adjusting tube 611. Manually rotate the adjusting tube 611, and the laser emitter 65 will rotate accordingly.

[0042] Next, the bevel angle is set. The clamping part 4, which is located in the laser emitting part 6 that slides along the circular track 2, is adjusted to a suitable angle according to the scale plate 3. The corresponding clamping part 4 is fixed by rotating the limit bolt 422. Then, the clamping part 4 that holds the tube to be processed 5 is also fixed. The angle value is read by the scale plate 3 to realize the quantitative setting of the bevel angle.

[0043] After laser cutting, the clamping part 4 of the adjusting tube 611 needs to be adjusted so that the adjusting tube 611 can rotate and move along its axis, rather than being fixed. The adjusting tube 611 is manually controlled to rotate, such as... Figure 3 The dotted circular line indicates the rotation path of the laser emitter 65, enabling laser cutting of the tube 5 to be processed. It should be noted that during the circumferential rotation of the laser emitter 65, the inner spring 64 continuously pushes the second sleeve 63 outwards, ensuring that the rotating ball 654 at the end of the laser emitter 65 firmly presses against the outer wall of the tube 5 to be processed. The rotating ball 654 rolls along the tube wall, and the first sleeve 62 and the second sleeve 63 automatically extend and retract with the curvature of the tube wall, bringing the output end of the laser emitter 65 as close to the tube wall as possible.

[0044] It should also be noted that, such as Figure 10 As shown, when the tube 5 to be processed is perpendicular to the laser emitter 65, the two horizontal dotted lines represent the range of movement of the output end of the laser emitter 65. When the laser emitter 65 moves to the uppermost or lowermost end, an angle α will be generated between the laser emitter 65 and the outer wall of the tube 5 to be processed, causing the distance between the output end of the laser emitter 65 and the tube wall of the tube 5 to change. Therefore, the tube 5 to be processed cannot be completely cut directly at the upper and lower ends, and additional manual laser cutting operation is required.

[0045] It should also be noted that, such as Figure 2 As shown, after one side of the tube to be processed 5 is processed, the laser emitting part 6 and its corresponding clamping part 4 are rotated to the opposite position to cut the outer wall of the opposite side of the tube to be processed 5, so that only the upper and lower ends of the tube to be processed are not completely cut and require subsequent manual processing.

[0046] In the description of this invention, it should be noted that the terms "upper," "lower," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0047] The above provides a detailed description of the beveling equipment and processing method for laser cutting of all-terrain vehicle frames provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The above description of the embodiments is only for the purpose of helping to understand the present invention and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A beveling processing device for laser cutting of all-terrain vehicle frames, characterized in that, include: A fixed plate, with a circular track and scale plate fixed at the upper end of the fixed plate, and the fixed plate, circular track and scale plate are all coaxial; The clamping part is provided in at least two sets, both of which are slidably arranged on a circular track, with one set of clamping parts holding the tube to be processed. The laser emitting part is clamped in another set of clamping parts, which includes a replacement end clamped by the other set of clamping parts, a retractable sleeve one and a sleeve two, and a laser emitting unit. The laser emitter is located at an eccentric position on the replacement end and can rotate with the replacement end. The axis of the replacement end and the axis of the tube to be processed both extend through the center of the fixed plate. The laser emitter is adjusted to its position on the circular track by another set of clamping parts to form different angles with the tube to be processed.

2. The beveling equipment for laser cutting of all-terrain vehicle frames according to claim 1, characterized in that the clamping part... include: The V-shaped bracket has a V-shaped opening at the top, which is used to hold the tube to be processed or the end to be replaced. A sliding assembly, installed at the lower end of the V-shaped frame, is used to cooperate with a circular track, allowing the V-shaped frame to change position along the circular track; The clamping frame, located at the upper end of the V-shaped frame, moves downward to hold the tube to be processed or the end to be replaced. The adjusting shaft is engaged with the V-shaped bracket and threadedly connected to the clamping frame. The height position of the clamping frame can be changed by rotating the adjusting shaft.

3. The beveling equipment for laser cutting of all-terrain vehicle frames according to claim 2, characterized in that, The V-shaped frame has sliding openings on both sides, and sheet metal sheets are fixed on both sides of the V-shaped frame. The lower end of the adjusting shaft is a circular plate structure with a diameter larger than the adjusting shaft. The adjusting shaft passes through the V-shaped frame from bottom to top. The circular plate structure is locked with the V-shaped frame. The adjusting shaft passes through the corresponding sheet metal plate upwards. The clamping frame is slidably set in the corresponding sliding opening on both sides.

4. The beveling equipment for laser cutting of all-terrain vehicle frames according to claim 2, characterized in that, The sliding component includes: The upper plate is fixed to the lower end of the V-shaped frame, and its edge has a downward-through and threaded limiting bolt; The lower plate is divided into two parts, both of which are fixed to the lower end of the upper plate. The lower plate has a slot that fits into the circular track.

5. The beveling equipment for laser cutting of all-terrain vehicle frames according to claim 1, characterized in that, Replacement end includes: The adjusting tube is clamped in another set of clamping parts. The adjusting tube is replaceable and has the same diameter as the tube to be processed. A sleeve is fitted onto the end of the regulating tube, with a limit end threaded to its outer side, which is pressed against the regulating tube. The polygonal shaft is fixed to the end of the sleeve and is set off-center to be connected and locked with the sleeve.

6. The beveling equipment for laser cutting of all-terrain vehicle frames according to claim 5, characterized in that, Sleeve 1 is sleeved with sleeve 2. Sleeve 2 has an internal spring for support. The laser emitter is fixed to the end of sleeve 2. When the adjusting tube is manually rotated, the laser emitter moves in a circular motion.

7. The beveling equipment for laser cutting of all-terrain vehicle frames according to claim 1, characterized in that, The output end of the laser emitter has circumferentially distributed mounting holes, and each mounting hole has a protruding shaft. The outer end of the protruding shaft has a rotating hole, and a rotating ball is rotatably installed in the rotating hole. The rotating ball contacts the outer wall of the tube to be processed.

8. The beveling equipment for laser cutting of all-terrain vehicle frames according to claim 1, characterized in that, A baffle is provided on the fixed plate, and the baffle is located opposite the output end of the laser emitter.

9. The beveling equipment for laser cutting of all-terrain vehicle frames according to claim 8, characterized in that, The baffle is made of thick metal plate and is magnetically attached to the upper part of the fixed plate.

10. A processing method for laser cutting and beveling equipment for all-terrain vehicle frames, characterized in that, The beveling equipment for laser cutting of all-terrain vehicle frames according to any one of claims 1-9 includes the following steps: Step 1: Clamping and fixing. Clamp the tube to be processed in one set of clamping parts, and clamp the replacement end of the laser emitting part in another set of clamping parts. The axis of the replacement end and the axis of the tube to be processed both extend through the center of the fixed plate. Step 2: Bevel angle setting. Read the required bevel angle value according to the scale plate, slide the clamping part of the laser emitter along the circular track, and then fix it. At the same time, fix the clamping part of the tube to be processed on the circular track to complete the quantitative setting of the angle between the tube to be processed and the laser emitter. Step 3: Laser cutting. Adjust the corresponding clamping part so that the replacement end is in a rotatable and retractable state. Manually rotate the replacement end so that the laser emitter makes a circular motion around the axis of the replacement end. The laser emitter performs laser cutting on the wall of the tube to be processed. During the cutting process, sleeve one and sleeve two automatically extend and retract with the undulation of the outer wall of the tube to be processed. The output end of the laser emitter keeps dynamically close to the outer wall of the tube to be processed. Step 4: Reversing the cutting direction. After cutting one side of the tube to be processed, release the clamping part holding the laser emitter, slide the clamping part along the circular track to the opposite position to the position in Step 3 and lock it, then execute Step 3 again. Step 5: Residual processing. Remove the cut tube and manually assist in cutting or recutting the remaining connection parts at the top and bottom ends that were not completely cut in Step 4 to obtain the end of the tube with a complete bevel.

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