Turning tool, pipe connector machining device and pipe connector machining method

Abstract

The invention relates to the technical field of pipe manufacturing equipment, in particular to a turning tool, a pipe connector machining device and a pipe connector machining method.The turning tool comprises a tool body, a plurality of first cutting edges and a plurality of second cutting edges are arranged on the cutting edge of the tool body, and the first cutting edges are higher than the second cutting edges; the multiple first cutting edges and the multiple second cutting edges are arranged in a staggered mode in the length direction of the cutting edge. According to the invention, scraps generated during processing of a pipe joint are proper and uniform in size, and can be directly added into a mixing system again, so that the scraps can be reused, the production efficiency of pipes is improved, and the production cost of the pipes is reduced.

Description

Technical Field

[0001] This invention relates to the field of pipe manufacturing equipment technology, and more specifically, to a lathe tool, a pipe joint processing device, and a pipe joint processing method. Background Technology

[0002] HDPE spiral wound solid-wall drainage pipes are constructed using a pilot-guided pipe-pulling technique. Following the designed guide hole trajectory, directional drilling technology is employed, utilizing an enlarged head to guide the pipe along the designed path, with pipe sections installed simultaneously during excavation. This process offers advantages such as minimal impact on traffic and existing soil conditions, wide geological adaptability, small construction footprint, high construction efficiency, and precise elevation control, making it a promising market prospect. To achieve simultaneous excavation and pipe section installation, interface structures must be installed at both ends of the pipe to facilitate the splicing of different pipe sections into a single unit.

[0003] Pipe joints are machined from solid-walled pipes, generating a large amount of waste material during the cutting process. This waste material, structurally identical to the raw materials used in pipe production, can be recycled for new pipe manufacturing. However, current technology faces challenges in waste recycling. The processing of spigot and socket joints produces significant waste material, which accumulates into cylindrical shapes. To ensure direct reuse, the size of these small cylinders must be uniform (with minimal deviation). Using feedstock of varying sizes leads to unstable feeding during extrusion, resulting in inconsistent extruded material thickness and uneven wall thickness in the finished product. Current technology does not control the width of the waste material generated during pipe surface cutting, leading to inconsistent cylinder sizes. Therefore, the waste material cannot be directly reused, requiring a separate shredder for thin sheets. After shredding, the material needs to be re-granulated, resulting in high production efficiency and low cost. Summary of the Invention

[0004] To address the technical problem of inconsistent waste chip size after pipe joint processing in existing technologies, this invention provides a lathe tool, a pipe joint processing device, and a pipe joint processing method, which ensures that the waste chip size from pipe joint processing is appropriate and uniform, allowing it to be directly added back into the mixing system for reuse. This improves pipe production efficiency and reduces pipe production costs.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a lathe tool, including a tool body, wherein a first cutting edge and a second cutting edge are provided on the cutting edge of the tool body, the first cutting edge is higher than the second cutting edge, and multiple first cutting edges and multiple second cutting edges are provided, and the multiple first cutting edges and multiple second cutting edges are arranged alternately along the length direction of the cutting edge.

[0006] In this technical solution, the tool body supports the basic shape of the entire lathe tool and is mounted on the tool post of the lathe. The side of the tool body that contacts the tube to be cut is the cutting edge, used to cut the surface of the tube. The width of the waste chips after cutting is directly related to the width of the cutting edge, and the width of the waste chips can be controlled by controlling the width of the cutting edge. The cutting edge of the tool body consists of a first cutting edge and a second cutting edge, which are arranged alternately, with the first cutting edge being higher than the second cutting edge. During cutting, the operator first controls the tool body to approach the tube to be cut, where the first cutting edge will first contact the surface of the tube and cut, thus forming multiple grooves on the surface of the tube. The width of the grooves is the width of the first cutting edge, and the width of the waste chips cut off is equal to the width of the grooves, i.e., the width of the first cutting edge. Then, the second cutting edge contacts the surface of the tube and removes the part that was not cut by the first cutting edge, thus completing the cutting of the tube surface. The width of the waste chips cut by the second cutting edge is the width between two adjacent first cutting edges. Therefore, by setting the width of the first and second cutting edges, the width of the cut waste chips can be controlled, thus ensuring that the waste chips are of uniform and suitable size and can be directly added back into the mixing system, making the waste chips reusable.

[0007] Preferably, the cutting edge of the blade body is provided with a first mounting surface and a second mounting surface. The height of the first mounting surface is higher than that of the second mounting surface. Multiple first mounting surfaces and multiple second mounting surfaces are provided, and the multiple first mounting surfaces and multiple second mounting surfaces are staggered. Blades can be detachably mounted on both the first mounting surface and the second mounting surface. The cutting edge of the blade mounted on the first mounting surface constitutes the first cutting edge, and the cutting edge of the blade mounted on the second mounting surface constitutes the second cutting edge.

[0008] Preferably, the width of the second mounting surface is equal to the width of the blade, and the width of the first mounting surface is 0.1 mm to 1 mm less than the width of the blade.

[0009] The present invention also provides a pipe joint processing device, including a base, a spindle, a spindle seat, a drive device, a cutting tool holder, and the aforementioned turning tool. The spindle seat is slidably mounted on the base, the spindle is rotatably mounted on the spindle seat, the drive device is mounted on the spindle seat and is drively connected to one end of the spindle, and a fastening device is provided at the other end of the spindle. The spindle extends into the pipe, and the fastening device is fastened to the inner wall surface of the pipe. The cutting tool holder is slidably mounted on the spindle seat, and the turning tool is mounted on the cutting tool holder.

[0010] In this technical solution, a base is used to support the pipe joint processing device, and a spindle seat is mounted on the base for mounting the spindle. The spindle seat also houses a drive unit for rotating the spindle and a cutting tool holder, with the cutting tool mounted on the cutting tool holder. A fastening device is installed on the spindle. When processing the pipe joint, the operator first places the pipe onto the spindle. The fastening device on the spindle fastens the pipe by abutting against the inner wall surface of the pipe. Then, the drive unit is activated, driving the spindle and consequently the pipe to rotate. The operator then moves the cutting tool holder, bringing the cutting tool close to the part of the pipe to be cut until tool setting is complete. Finally, the cutting operation is performed, processing the pipe end into the preset shape of the joint.

[0011] Preferably, it further includes a driven clamping device, which includes a driven shaft seat slidably mounted on the base and a driven shaft rotatably mounted on the driven shaft seat, and the fastening device is also installed at the end of the driven shaft.

[0012] During operation, the fastening devices on the spindle and driven shaft extend into the tube from both ends and simultaneously fasten the tube. The spindle and driven shaft are concentrically arranged. When the spindle rotates, it drives the tube to rotate, which in turn indirectly drives the driven shaft to rotate. The driven clamping device ensures that both ends of the tube are concentric and prevents the tail of the tube from jumping. The aforementioned driven clamping device is used for processing tubes with a certain strength, requiring that the tube's own structure will not be damaged when it drives the driven shaft. It is preferably suitable for tubes with high strength and relatively short length.

[0013] Preferably, the drive device includes a motor, the output shaft of the motor is connected to the main shaft for transmission, the motor is a low-speed, high-torque variable frequency motor, and the motor is electrically connected to the controller.

[0014] Preferably, the drive device further includes a reducer, the input end of which is connected to the output end of the motor, and the output end of which is connected to the main shaft drive.

[0015] Preferably, the length direction of the pipe is the X direction, and the direction perpendicular to the X direction on the horizontal plane is the Y direction. A first slide rail is provided on the spindle seat, the first slide rail is arranged along the X direction, a sliding seat is slidably mounted on the first slide rail, a second slide rail is provided on the sliding seat, the second slide rail is arranged along the Y direction, and the cutting tool holder is slidably mounted on the second slide rail.

[0016] Preferably, the cutting tool holder is also provided with a waste chip recycling device.

[0017] Preferably, the waste recycling device includes a conveyor belt, which is positioned directly below the pipe cutting location.

[0018] The present invention also provides a pipe joint processing method, which is implemented using the above-mentioned pipe joint processing device, and includes the following steps: S100: Fix the pipe onto the processing device and drive the cutting tool to move and perform tool setting; specifically, fix the pipe on the spindle and start the motor to drive the pipe to rotate, moving the cutting tool holder along the first or second slide rail to perform tool setting. This step is a preparatory step for processing the pipe interface.

[0019] S200: The motor is controlled to drive the pipe to rotate, driving the cutting tool to move and cut. After cutting a set distance, the cutting tool retracts. After retraction, the pipe rotates a set distance, and the cutting tool advances again to cut until the entire layer of pipe is cut. Besides the cutting width, the cutting length also affects the size of the chips. The chips after cutting are rolled into a cylindrical shape, and the diameter of this cylinder is related to the length of the chips; the longer the chips, the larger the rolled cylinder. Conventional turning processes are mostly continuous, resulting in long, strip-shaped chips that easily accumulate and entangle the cutting tools. Furthermore, the waste requires secondary processing for recycling, significantly increasing reuse costs. By setting the motor to a low-speed, high-torque frequency conversion mode, the motor can achieve variable pulse cutting through frequency conversion. That is, after the motor drives the pipe to rotate a certain distance, it rotates in the opposite direction to retract the tool, causing the cut chips to fall off the pipe. Then, the motor rotates forward again for the next cutting step. The cutting thickness and length can be controlled by the operator moving the cutting tool holder to control the feed rate of the cutting tool. For example, the tool can be fed 0.5mm inward, rotated 200-300mm linearly along the pipe, and then retracted 0.6mm. This process is repeated 0.6mm inward, rotated 200-300mm linearly along the pipe, and then retracted 0.6mm, until the entire circle is cut. For example, for a 500mm pipe with a circumference of approximately 1600mm, the tool can be fed and retracted 1600 / 300mm approximately 6 times. After each cut, the next pulse begins. The cutting process involves reciprocating cuts. Alternatively, cutting can be done proportionally. For example, a single cut can remove 1 / 8 of the circumference of material, then the cutter can be retracted to rotate the pipe by 1 / 8 of its circumference, and then the cutter can be retracted again to remove another 1 / 8 of the circumference. This process is repeated to complete the cutting of the entire pipe layer. Simultaneously, when the retraction distance is arbitrary, for example, cutting 1 / 8 of the circumference, retracting the cutter any distance, and then cutting another 1 / 8 of the circumference, after one complete cut, there will be a protrusion of arbitrary length. At this point, the cutter can be directly advanced to cut one more round of the pipe, removing the remaining protrusion along with the material. The motor can be electrically connected to a controller, which can be a computer, a PLC programmable controller, etc. Operators can control the operation of the motor by directly operating the controller or by pre-writing a control program into the controller.

[0020] S300: Repeat step S200 until the cutting reaches the preset processing position. During the process, collect the cutting chips. A single step S200 can only process 0.5mm of the pipe surface. By repeatedly executing step S200, multiple processing operations can be superimposed to finally reach the preset processing position and complete the preset processing shape.

[0021] S400: After cutting, the cutting tool retracts and resets, the motor stops driving the pipe to rotate, completing the pipe interface processing. The collected chips are then recycled and transported to a designated device for reuse. The chips produced by this method are rolled into cylindrical shapes and can be directly recycled and reused, for example, as raw materials for an extruder.

[0022] Preferably, the pipe is driven to rotate at a speed of 200~300 rad / min.

[0023] Preferably, the pipe cutting distance is set to 200mm~300mm.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, by setting the first cutting edge and the second cutting edge at intervals, the size of the cut waste chips can be controlled, so that they can be directly added back into the mixing system, thereby making the waste chips reusable, improving the pipe production efficiency and reducing the cost of pipe production. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the cutting tool of the present invention; Figure 2 This is a schematic diagram of the overall structure of the pipe joint processing device of the present invention; Figure 3 This is a top view structural diagram of the pipe interface processing device of the present invention; Figure 4 This is a schematic diagram of the overall structure of another embodiment of the pipe joint processing device of the present invention; Figure 5 This is a flowchart of the pipe joint processing method of the present invention.

[0026] In the attached diagram: 1. Tool body; 2. Blade; 3. Base; 4. Spindle; 5. Spindle seat; 6. Drive unit; 7. Cutting tool holder; 8. Lathe tool; 9. Tube; 11. First mounting surface; 12. Second mounting surface; 13. Driven shaft seat; 14. Driven shaft; 51. First slide rail; 52. Sliding seat; 53. Second slide rail; 61. Motor; 62. Reducer; 71. Conveyor belt. Detailed Implementation

[0027] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0028] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1 like Figure 1 As shown, a lathe tool includes a tool body 1. A first cutting edge and a second cutting edge are provided on the cutting edge of the tool body 1. The first cutting edge is higher than the second cutting edge. Multiple first and second cutting edges are provided, and the multiple first and second cutting edges are arranged alternately along the length of the cutting edge. The tool body 1 supports the basic shape of the entire lathe tool and is mounted on the tool post of a lathe. The side of the tool body 1 that contacts the tube 9 to be cut is the cutting edge, used to cut the surface of the tube 9. The width of the chips after cutting is directly related to the width of the cutting edge; the width of the chips can be controlled by controlling the width of the cutting edge. The cutting edge of the cutter body 1 consists of a first cutting edge and a second cutting edge, which are arranged alternately. The first cutting edge is higher than the second cutting edge. During cutting, the operator first controls the cutter body 1 to approach the pipe 9 to be cut. The first cutting edge will first contact the surface of the pipe 9 and cut, thus forming multiple grooves on the surface of the pipe 9. The width of the grooves is the width of the first cutting edge, and the width of the cut-off waste is equal to the width of the grooves, i.e., the width of the first cutting edge. Then, the second cutting edge contacts the surface of the pipe 9 and removes the part that was not cut by the first cutting edge, thus completing the cutting of the surface of the pipe 9. The width of the waste cut by the second cutting edge is the width between two adjacent first cutting edges. Therefore, by setting the width of the first and second cutting edges, the width of the cut-off waste can be controlled, thus ensuring that the waste is of uniform and suitable size and can be directly added back into the mixing system, making the waste reusable.

[0030] like Figure 1 As shown, the cutting edge of the cutter body 1 is provided with a first mounting surface 11 and a second mounting surface 12. The height of the first mounting surface 11 is higher than that of the second mounting surface 12. Multiple first mounting surfaces 11 and multiple second mounting surfaces 12 are provided, and the multiple first mounting surfaces 11 and multiple second mounting surfaces 12 are staggered. Blades 2 can be detachably mounted on both the first mounting surfaces 11 and the second mounting surfaces 12. The cutting edge of the blade 2 mounted on the first mounting surface 11 constitutes the first cutting edge, and the cutting edge of the blade 2 mounted on the second mounting surface 12 constitutes the second cutting edge. Both the first mounting surfaces 11 and the second mounting surfaces 12 are used to mount the blades 2. The first mounting surfaces 11 and the second mounting surfaces 12 have a height difference and are staggered, so that the blades 2 are also staggered vertically. The cutting edge of the blade 2 located on the upper layer constitutes the first cutting edge, and the cutting edge of the blade 2 located on the lower layer constitutes the second cutting edge. This achieves the staggered distribution of the first and second cutting edges, thereby controlling the size of the waste chips generated after cutting to be approximately the same. The blade 2 is detachably mounted on the first mounting surface 11 or the second mounting surface 12. If the cutting edge breaks during use, only the corresponding blade 2 needs to be replaced, and the entire cutting tool does not need to be replaced.

[0031] like Figure 1 As shown, the width of the second mounting surface 12 is equal to the width of the blade 2, and the width of the first mounting surface 11 is 0.1mm to 1mm less than the width of the blade 2. By making the width of the first mounting surface 11 slightly smaller than the width of the blade 2, the blade 2 mounted on the second mounting surface 12 and the blade mounted on the first mounting surface 11 have a certain overlap. This ensures complete cutting without leaving any residue on the surface of the pipe 9, without affecting the direct utilization of the waste chips after cutting.

[0032] Example 2 like Figure 2As shown, a pipe joint processing device includes a base 3, a spindle 4, a spindle seat 5, a drive device 6, a cutting tool holder 7, and a lathe tool 8 as described in any one of claims 1 to 3. The spindle seat 5 is slidably mounted on the base 3, the spindle 4 is rotatably mounted on the spindle seat 5, the drive device 6 is mounted on the spindle seat 5 and is drivenly connected to one end of the spindle 4, and a fastening device is provided at the other end of the spindle 4. The spindle 4 is used to extend into a pipe 9, and the fastening device is used to fasten to the inner wall surface of the pipe 9. The cutting tool holder 7 is slidably mounted on the spindle seat 5, and the lathe tool 8 is mounted on the cutting tool holder 7. The drive device 6 includes a motor 61, the output shaft of which is drivenly connected to the spindle 4, and the motor 61 is electrically connected to a controller. The base 3 is used to support the pipe joint processing device, and the spindle seat 5 is mounted on the base 3. The spindle seat 5 is used to mount the spindle 4. The spindle seat 5 is also provided with the drive device 6 for driving the spindle 4 to rotate and the cutting tool holder 7, wherein the lathe tool 8 is mounted on the cutting tool holder 7. A fastening device is installed on the spindle 4. When processing the pipe joint, the operator first places the pipe 9 onto the spindle 4. The fastening device on the spindle 4 fastens the pipe 9 by abutting against the inner wall surface of the pipe 9. Then, the drive device 6 is activated, which drives the spindle 4 and thus the pipe 9 to rotate. The operator then moves the cutting tool holder 7, bringing the cutting tool 8 on the cutting tool holder 7 close to the part of the pipe 9 to be cut until the tool setting is completed. Then, the cutting operation is performed to process the end of the pipe 9 into the preset shape of the joint. The drive device includes a motor 61, and the controller controls the rotation of the pipe by controlling the motor 61, thereby controlling the pipe joint processing.

[0033] It also includes a driven clamping device, which includes a driven shaft seat 13 slidably mounted on the base 3 and a driven shaft 14 rotatably mounted on the driven shaft seat 13. A fastening device is also installed at the end of the driven shaft 14.

[0034] During operation, the fastening devices on the main spindle 4 and driven shaft 14 extend into the tube 9 from both ends and simultaneously fasten the tube 9. The main spindle 4 and driven shaft 14 are concentrically arranged. When the main spindle 4 rotates, it drives the tube 9 to rotate, which in turn indirectly drives the driven shaft 14 to rotate. The driven clamping device can ensure that the two ends of the tube 9 are concentric and prevent the tail of the tube 9 from jumping. The above-mentioned driven clamping device is used for processing tubes 9 with a certain strength, requiring that the tube 9 itself will not be damaged or destroyed when it drives the driven shaft 14. It is preferably suitable for tubes 9 with high strength and relatively short length.

[0035] like Figure 2As shown, the drive unit 6 also includes a reducer 62. The input end of the reducer 62 is connected to the output end of the motor 61, and the output end of the reducer 62 is connected to the main shaft 4 for transmission. By setting the reducer 62 for driving, the rotational speed of the main shaft 4 driven by the motor 61 can be further reduced, and the torque that the motor 61 can provide to the main shaft 4 can be increased, providing sufficient torque for the extrusion and cutting of the tube 9.

[0036] like Figure 2 As shown, the length direction of the pipe 9 is the X-direction, and the direction perpendicular to the X-direction on the horizontal plane is the Y-direction. A first slide rail 51 is provided on the spindle seat 5, which is arranged along the X-direction. A sliding seat 52 is slidably mounted on the first slide rail 51, and a second slide rail 53 is provided on the sliding seat 52, which is arranged along the Y-direction. The cutting tool holder 7 is slidably mounted on the second slide rail 53. The operator can control the movement of the sliding seat 52 and the cutting tool holder 7 to achieve tool setting and feed cutting of the lathe tool 8. A first drive unit and a second drive unit can also be respectively provided on the first slide rail 51 and the second slide rail 53 to drive the sliding seat 52 to slide on the first slide rail 51 and the cutting tool holder 7 to slide on the second slide rail 53, respectively. Both the first drive unit and the second drive unit are electrically connected to the controller. The operator can achieve automated tool setting and feed by operating the controller or writing a control program into the controller.

[0037] like Figure 3 As shown, the cutting tool holder 7 is also equipped with a waste chip collection device. This device collects the generated waste chips for easy reuse. The waste chip collection device includes a conveyor belt 71, which is positioned directly below the cutting position of the pipe 9. After cutting, the waste chips fall onto the conveyor belt 71 under gravity. The conveyor belt 71 has a built-in drive unit that can drive the conveyor belt 71 to transport the waste chips. The conveyor belt 71 can be configured to transfer the waste chips to a preset location for unified collection as needed.

[0038] Example 3 like Figure 5 As shown, a pipe joint processing method, implemented using the pipe joint processing apparatus as described in any one of claims 4 to 7, includes the following steps: S100: Fix the pipe 9 onto the machining device and drive the cutting tool 8 to move and set the tool; specifically, fix the pipe 9 on the spindle 4 and start the motor 61 to drive the pipe 9 to rotate, and move the cutting tool holder 7 along the first slide rail 51 or the second slide rail 53 to set the cutting tool 8. This step is a preparatory step for machining the pipe interface.

[0039] S200: The control motor 61 drives the pipe 9 to rotate, driving the cutting tool 8 to move and cut. After cutting to a set distance, the cutting tool 8 retracts. After retraction, the pipe rotates a set distance, and the cutting tool 8 cuts again until the entire layer of pipe 9 is cut. Besides the cutting width, the cutting length also affects the size of the chips. The chips after cutting are rolled into a cylindrical shape, and the diameter of this cylinder is related to the length of the chips; the longer the chips, the larger the rolled cylinder. Conventional turning processes are mostly continuous, resulting in long, strip-shaped chips that easily accumulate and entangle the cutting tools. Furthermore, the waste requires secondary processing for recycling, significantly increasing reuse costs. By setting the motor 61 to a low-speed, high-torque frequency conversion mode, the motor 61 can achieve variable pulse cutting through frequency conversion. That is, after the motor 61 drives the pipe 9 to rotate a certain distance, it rotates in the opposite direction to retract the tool, causing the cut chips to fall off the pipe 9. Then, the motor 61 rotates forward again for the next cutting step. The cutting thickness and length can be controlled by the operator moving the cutting tool holder to control the feed rate of the cutting tool. For example, the tool advances 0.5mm, rotates the tube linearly about 200-300mm, retracts 0.6mm, advances another 0.6mm, rotates the tube linearly about 200-300mm, and retracts 0.6mm, repeating this process until the entire circle is cut. For example, for a 500mm tube with a circumference of about 1600mm, the tool can be oscillating forward and backward at 1600 / 300mm intervals about 6 times before starting the next pulse. The cutting process is reciprocating; alternatively, cutting can be performed proportionally. For example, a single cut can remove 1 / 8 of the circumference of material, then the cutter can be retracted to rotate the pipe 9 by 1 / 8 of the circumference, and then the cutter can be retracted again to remove another 1 / 8 of the circumference, and so on, to complete the cutting of the entire layer of pipe 9. Simultaneously, when the retraction distance is arbitrary, for example, cutting 1 / 8 of the circumference, retracting the cutter any length, and then cutting another 1 / 8 of the circumference, after one round of cutting, there will be protrusions of arbitrary length. At this point, the cutter can be directly advanced to cut one round of pipe 9, removing the remaining protrusions along with the material. Motor 61 can be electrically connected to a controller, which can be a computer, PLC programmable controller, etc. Operators can control the operation of motor 61 by directly operating the controller or by pre-writing a control program into the controller.

[0040] S300: Repeat step S200 until the cutting reaches the preset processing position. During the process, collect the cutting chips. A single step S200 can only process 0.5mm of the pipe surface. By repeatedly executing step S200, multiple processing operations can be superimposed to finally reach the preset processing position and complete the preset processing shape.

[0041] S400: After cutting, the cutting tool 8 retracts and resets, the motor 61 stops driving the pipe 9 to rotate, completing the pipe 9 interface processing. The collected chips are recycled and transported to a designated device for reuse. The chips produced by this method are rolled into cylindrical shapes and can be directly recycled and reused, for example, they can be used directly as raw materials for an extruder.

[0042] The pipe 9 is driven to rotate at a speed of 200~300 rad / min. The waste chips need to be able to form a cylindrical shape of a certain size. It is necessary to ensure that the speed at which the motor 61 drives the main shaft 4 to rotate is appropriate. In order to form small cylindrical shapes, the speed should be 200-300 rpm. The specific speed is related to the linear velocity. The pipe 9 has a larger diameter and its circumferential surface linear velocity will be relatively faster, so the speed of the motor 61 needs to be slower.

[0043] The cutting distance for pipe 9 is set to 200mm~300mm. The diameter of the cylindrical waste chips formed after the waste chips with a length of 200mm~300mm after convolution meets the mixing requirements.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A lathe tool, characterized in that, The tool includes a blade body (1), on which a first cutting edge and a second cutting edge are provided. The first cutting edge is higher than the second cutting edge. There are multiple first cutting edges and multiple second cutting edges, and the multiple first cutting edges and multiple second cutting edges are arranged alternately along the length direction of the cutting edge.

2. A lathe tool according to claim 1, characterized in that, The cutting edge of the blade body (1) is provided with a first mounting surface (11) and a second mounting surface (12). The height of the first mounting surface (11) is higher than that of the second mounting surface (12). Multiple first mounting surfaces (11) and multiple second mounting surfaces (12) are provided respectively. Multiple first mounting surfaces (11) and multiple second mounting surfaces (12) are arranged alternately. Blades (2) can be detachably installed on both the first mounting surface (11) and the second mounting surface (12). The cutting edge of the blade (2) installed on the first mounting surface (11) constitutes the first cutting edge, and the cutting edge of the blade (2) installed on the second mounting surface (12) constitutes the second cutting edge.

3. A lathe tool according to claim 2, characterized in that, The width of the second mounting surface (12) is equal to the width of the blade (2), and the width of the first mounting surface (11) is 0.1 mm to 1 mm less than the width of the blade (2).

4. A pipe joint processing device, characterized in that, The device includes a base (3), a spindle (4), a spindle seat (5), a drive device (6), a cutting tool holder (7), and a lathe tool (8) as described in any one of claims 1 to 3. The spindle seat (5) is slidably mounted on the base (3), the spindle (4) is rotatably mounted on the spindle seat (5), the drive device (6) is mounted on the spindle seat (5) and is connected to one end of the spindle (4) in a transmission connection. The other end of the spindle (4) is provided with a fastening device. The spindle (4) is used to extend into a tube (9), and the fastening device is used to be fastened to the inner wall surface of the tube (9). The cutting tool holder (7) is slidably mounted on the spindle seat (5), and the lathe tool (8) is mounted on the cutting tool holder (7). The drive device (6) includes a motor (61), the output shaft of the motor (61) is connected to the spindle (4) in a transmission connection, and the motor (61) is electrically connected to a controller.

5. The pipe joint processing device according to claim 4, characterized in that, It also includes a driven clamping device, which includes a driven shaft seat (13) slidably mounted on the base (3) and a driven shaft (14) rotatably mounted on the driven shaft seat (13). The end of the driven shaft (14) is also equipped with the fastening device.

6. The pipe joint processing device according to claim 4, characterized in that, The length direction of the pipe (9) is defined as the X direction, and the direction perpendicular to the X direction on the horizontal plane is defined as the Y direction. A first slide rail (51) is provided on the spindle seat (5). The first slide rail (51) is arranged along the X direction. A sliding seat (52) is slidably installed on the first slide rail (51). A second slide rail (53) is provided on the sliding seat (52). The second slide rail (53) is arranged along the Y direction. The cutting tool holder (7) is slidably installed on the second slide rail (53).

7. The pipe joint processing device according to claim 4, characterized in that, The cutting tool holder (7) is also equipped with a waste chip recycling device, which includes a conveyor belt (71) located directly below the cutting position of the pipe (9).

8. A method for processing pipe joints, characterized in that, The process, achieved using the pipe joint processing apparatus as described in any one of claims 4 to 7, includes the following steps: S100: Fix the tube (9) onto the processing device and drive the cutting tool (8) to move and set the tool; S200: Control the motor (61) to drive the pipe (9) to rotate in a low-speed, high-torque frequency conversion mode, drive the cutting tool (8) to move and cut, after the cutting reaches a set distance, the cutting tool (8) retracts, after the pipe rotates a set distance, the cutting tool (8) cuts again until the entire layer of pipe (9) is cut; S300: Repeat step S200 until the cutting reaches the preset processing position. During the process, collect the waste chips that are cut off. S400: After the cutting is completed, the cutting tool (8) is retracted and reset, the motor (61) stops driving the pipe (9) to rotate, the pipe interface processing is completed, the collected scrap is recycled and transported to the set equipment for reuse.

9. A pipe joint processing method according to claim 8, characterized in that, The pipe (9) is driven to rotate at a speed of 200~300 rad / min.

10. A pipe joint processing method according to claim 8, characterized in that, The cutting distance of the pipe (9) is set to 200mm~300mm.

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