Friction welding intermediate piece excess material and flash removal apparatus and method

Abstract

This invention discloses a device for removing excess material and flash from friction-welded intermediate parts, comprising: a machine body, including a first part and a second part for supporting and fixing both ends of a steel rail, with a guide rail fixedly disposed between the first part and the second part; a cutting assembly, fixedly disposed on the end of the guide rail facing the first part of the machine body, for cutting the excess material and flash of the intermediate parts after welding of a third friction body; and a pushing assembly, movably disposed on the end of the guide rail facing the second part of the machine body, for pushing away the excess material and flash of the intermediate parts after welding of a third friction body. This invention can automatically remove excess material and flash from friction-welded intermediate parts in one operation, improving the production process of third-body friction welding and increasing production efficiency. Simultaneously, by combining cutting and segmented pushing, the pushing force required for removing excess material and flash from low-temperature, large-section intermediate parts is reduced, effectively lowering the equipment tonnage.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a device and method for removing excess material and flash from friction welding intermediate parts. Background Technology

[0002] Friction welding is a solid-state welding technology that can achieve good metallurgical bonding and mechanical properties in welded joints. It has a wide range of weldable materials and high production efficiency, and is widely used in aerospace, machinery manufacturing, oil drilling, and automobile manufacturing. Among these technologies, a third-body or intermediate-part friction welding method has been developed for non-rotating workpieces. Invention patent ZL202210108261.X discloses an intermediate-part rotating rail friction welding device. This device solves the problem of high-speed relative motion of long rails by rotating an intermediate part that contacts the rail end faces on both sides. It enables efficient and high-quality solid-state welding of rails, offering significant technical advantages compared to fusion welding.

[0003] As a necessary post-weld process, current friction welding methods and equipment for intermediate rotating rails lack a systematic approach to removing post-weld burrs and excess material around the intermediate components, making them difficult to apply directly to mass industrial production. Because the intermediate component must completely cover the non-rotating section of the rail in an envelope-like manner, and sufficient margin must be left around its perimeter for stable clamping and rotation, the disc-shaped excess material and burrs to be removed after this type of friction welding typically have a large circumference and thickness. Furthermore, compared to flash welding, gas pressure welding, and aluminothermic welding, friction welding requires lower removal temperatures for the excess material and burrs, and the material exhibits higher shear strength. Using a traditional burr-pushing method, similar to those used in flash welding, gas pressure welding, and aluminothermic welding, requires significant pushing force and cannot directly remove the annular excess material and burrs from the rail, making successful removal of burrs and excess material difficult. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] To achieve the above objectives, the present invention provides a device for removing excess material and flash from friction welding intermediate parts, comprising:

[0006] The machine body includes a first part and a second part for supporting and fixing both ends of the steel rail, and a guide rail is fixedly provided between the first part and the second part;

[0007] A cutting assembly is fixedly mounted on one end of the guide rail facing the first part of the machine body, so as to cut the excess material and flash of the intermediate part after the welding of the third friction body;

[0008] The push-off assembly is movably disposed on one end of the guide rail facing the second part of the machine body, so as to push off the excess material and flash of the intermediate part after welding the third friction body.

[0009] This invention can automatically remove excess material and flash from intermediate parts after friction welding in one go, improving the production process of third-body friction welding and increasing production efficiency. It also employs a combination of cutting and segmented pushing to reduce the pushing force required for removing excess material and flash from low-temperature, large-section intermediate parts, effectively lowering the equipment's tonnage. Furthermore, the equipment has a compact and simple structure, exhibiting good adaptability to both preceding and following processes, as well as various long, rotating, and asymmetrical workpieces.

[0010] Optionally, both the first and second parts are provided with frames, and each of the frames has a through-hole for accommodating the rail. The through-hole of the through-hole is in the same direction as the length of the guide rail, and the two through-holes are facing each other. Each frame has a number of clamping cylinders through-hole on its side wall to clamp and fix the rail from both sides. The telescopic end of the clamping cylinder facing the rail is provided with a clamp for clamping the rail.

[0011] Furthermore, a support arm is provided at one end of the first part away from the second part of the machine body, and a support roller for supporting the rail is provided at the end of the support arm.

[0012] Furthermore, the second part has a support platform at the end of the frame opposite to the first part of the machine body. The support platform is provided with a limiting block for limiting the position of the rail. A friction roller that abuts against the rail is provided between the frame and the limiting block. The friction roller is fixedly connected to the support platform through a rotating shaft, and the friction roller is driven by a drive motor.

[0013] Furthermore, the cutting assembly includes a robotic arm fixedly mounted on the guide rail. The robotic arm includes a first rotary joint, a second rotary joint, and a third movable joint connected in sequence. A plasma arc cutting torch is fixedly mounted at the end of the third movable joint.

[0014] Furthermore, the push-out component includes:

[0015] A tool holder, which is slidably mounted on one end of the guide rail facing the second part of the machine body, and the tool holder is provided with a push hole for the steel rail to pass through;

[0016] The split-type pusher includes a first blade and a second blade symmetrically arranged on both sides of the pusher hole, and both the first blade and the second blade are slidably connected to the blade holder. Pusher blades for pushing off rail burrs are provided on the opposite sides of the first blade and the second blade.

[0017] A locking cylinder is provided, wherein the base end and the output end of the locking cylinder are fixedly connected to the first cutter body and the second cutter body respectively, so that the first cutter body and the second cutter body remain in abutting and locked state during the pushing operation;

[0018] The push-off cylinder is fixedly mounted on the frame of the second part, and the output end of the push-off cylinder passes through the frame of the second part and is fixedly connected to the tool holder to control the movement of the tool holder on the guide rail.

[0019] Furthermore, each push-off blade is a stepped blade with a concave center and convex sides. The two push-off blades are positioned opposite each other, and after the first blade and the second blade come into contact, the two push-off blades form a push-off hole that conforms to the outer contour of the rail cross-section.

[0020] This application also provides a method for removing excess material and flash from friction welding intermediate parts, including the following steps:

[0021] S1. Drive the friction rollers through the drive motor to insert the rail into the push-out cutting edge of the first and second cutter bodies, and send the rail and intermediate parts to be processed into the designated position.

[0022] S2. After the rail is fed in, control the clamping cylinder to clamp the rail from both sides to keep the rail in the position to be processed.

[0023] S3. Control the cutting assembly to cut the intermediate parts' scrap and flash;

[0024] S4. Control the pushing component to push away the intermediate parts after the cutting operation is completed, and completely push away the remaining material and flash of the intermediate parts after cutting.

[0025] S5. After completing the push-out operation, control the cutting component and the push-out component to retract to the initial position to prepare for the next cutting and push-out of the intermediate part's excess material and flash.

[0026] S6. The clamping cylinder retracts to the initial position to release the rail and remove it.

[0027] Furthermore, in S3, during the cutting operation, the plasma arc cutting torch is brought close to one side of the intermediate part surface, and a cut is made from the outer edge of the intermediate part to near the surface of the rail on the intermediate part scrap and flash.

[0028] Furthermore, in S4, after completing the kerf cutting in S3, the plasma arc cutting gun is removed, the split pusher on the rail is locked, and then the pusher cylinder is controlled to push the tool holder towards the intermediate part along the rail axis.

[0029] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0031] Figure 1 This is a schematic diagram of the overall structure of a friction welding intermediate material and flash removal device according to the present invention;

[0032] Figure 2 yes Figure 1 Schematic diagram of the structure of part AA;

[0033] Figure 3 This is a schematic diagram of the structure of the push-out component of a friction welding intermediate scrap and flash removal device according to the present invention;

[0034] Figure 4 This is a schematic diagram of the split pusher blade of a friction welding intermediate scrap and flash removal device according to the present invention;

[0035] Figure 5 This is a schematic diagram of the method steps for removing excess material and flash from intermediate friction welding parts according to the present invention;

[0036] Figure 6 This is a schematic diagram of the action flow corresponding to each step of a method for removing residual material and flash from intermediate friction welding parts according to the present invention.

[0037] Figure 7 This is a schematic diagram of the process of cutting off the leftover material and flash of the intermediate parts;

[0038] Figure 8 This is a schematic diagram of the process of removing excess material and flash from intermediate components.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Machine body; 11. Limiting block; 12. Friction roller; 13. Frame; 14. Guide rail; Group 15. Clamping cylinder; 16. Supporting roller; 17. Fixture; 2. Cutting assembly; 21. Robotic arm; 22. Cutting torch; 211. First rotary joint; 212. Second rotary joint; 213. Third moving joint; 3. Intermediate component; 4. Pushing assembly; Group 41. Locking cylinder; 42. Pushing blade; 43. Pushing blade holder; Group 5. Pushing cylinder; 6. Rail. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0042] This invention provides a device for removing excess material and flash from friction-welded intermediate parts, which is described below in conjunction with... Figures 1 to 4 To elaborate in detail.

[0043] A device for removing excess material and flash from friction-welded intermediate parts, comprising:

[0044] The machine body 1 includes a first part and a second part for supporting and fixing the two ends of the steel rail 6, and a guide rail 14 is fixedly provided between the first part and the second part.

[0045] Cutting component 2 is fixedly mounted on one end of guide rail 14 facing the first part of machine body 1, so as to cut the excess material and flash of intermediate part 3 after welding of third friction body;

[0046] Push-off component 4 is movably mounted on one end of guide rail 14 facing the second part of machine body 1, so as to push off the excess material and flash of intermediate part 3 after welding of the third friction body.

[0047] This invention can automatically remove excess material and flash from the intermediate part 3 after friction welding in one go using the cutting component 2 and the pushing component 4, thus improving the production process of third-body friction welding and increasing production efficiency. At the same time, the combination of cutting and segmented pushing reduces the pushing force required for removing excess material and flash from the low-temperature, large-section intermediate part 3, effectively reducing the equipment tonnage. Furthermore, the equipment has a compact and simple structure, and is highly adaptable to both preceding and following processes, as well as various long, rotating, and asymmetrical workpieces.

[0048] After the rail 6 is transported into the machine body 1, the intermediate part 3 corresponding to the third friction body is located at the cutting and pushing station between the first and second parts of the machine body 1. The rails 6 on both sides of the intermediate part 3 are fixedly placed on the first and second parts of the machine body 1, respectively. Then, the cutting component 2 is used to cut the excess material and flash of the intermediate part 3. The upper and lower parts of the excess material and flash of the intermediate part 3 on both sides of the rail 6 are cut from the outer edge of the intermediate part 3 toward the surface of the rail 6 to form symmetrical cuts, and the cut ends are made as close as possible to the surface of the rail 6. Then, the pushing component 4 is controlled to push away the excess material and flash of the intermediate part 3. The pushing component 4 is controlled to move along the axial direction of the rail 6 toward the intermediate part 3 to push away the cut excess material and flash of the intermediate part 3.

[0049] In order to stably fix the rail 6, a frame 13 is provided on the first part and the second part of the machine body 1. A fixing cavity for accommodating the rail 6 is provided through the inside of the two frames 13. The through direction of the fixing cavity is the same as the length direction of the guide rail 14, and the two fixing cavities are directly opposite each other. Several sets of clamping cylinder groups 15 are provided through the side wall of each frame 13. In one embodiment, the clamping cylinder group 15 is set as a hydraulic cylinder. The clamping cylinder assembly 15 is fixedly mounted on the outer wall of the frame 13. The output end of the clamping cylinder assembly 15 passes through the side wall of the frame 13 and is perpendicular to the side of the rail 6. The side wall of the frame 13 is provided with a channel for the output end of the clamping cylinder assembly 15 to pass through, so that the output end of the clamping cylinder assembly 15 can clamp and fix the rail 6 from both sides of the rail 6 in a vertical direction. In one embodiment, two sets of clamping cylinder assemblies 15 are arranged parallel to each other along the axial direction of the rail 6 on the frame 13 of the first part of the machine body 1, and one set of clamping cylinder assemblies 15 is arranged on the frame 13 of the second part of the machine body 1. Each set of clamping cylinder assemblies 15 includes two clamping cylinder assemblies 15 arranged opposite each other on both sides of the rail 6. The telescopic end of the clamping cylinder assembly 15 facing the rail 6 is provided with a clamp 17 for clamping the rail 6. The end of the clamp 17 facing the rail 6 is set as an arc surface, and the curvature of the arc surface is the same as the curvature of the outer contour of the side wall of the rail 6. This allows the clamp 17 to fit tightly against the outer wall of the rail 6, thereby increasing the contact area between the clamp 17 and the outer wall of the rail 6. This results in a uniform pressure distribution and prevents the rail 6 from being deformed due to excessive local pressure caused by the contact between the edges of the clamp 17 and the surface of the outer wall of the rail 6.

[0050] To facilitate the transport of the rail 6, a bearing platform is provided on the second part of the machine body 1, corresponding to the end of the frame 13 opposite to the first part. The bearing platform is provided with a limiting block 11 for limiting the position of the rail 6. Two limiting blocks 11 are provided, symmetrically arranged on both sides of the processing position of the rail 6, so that the rail 6 can move along the space between the two limiting blocks 11. A friction roller 12 is provided between the frame 13 and the limiting blocks 11, which abuts against the rail 6. The friction roller 12 is directly opposite the middle position of the two limiting blocks 11. The friction roller 12 is fixedly connected to the bearing platform through a rotating shaft, and the friction roller 12 is driven by a drive motor. Furthermore, a support arm is provided at the end of the first part of the machine body 1 away from the second part. The end of the support arm is provided with a support roller 16 for supporting the rail 6. The support arm is movably connected to the end of the first part of the machine body 1 so that the support arm can move up and down at the end of the first part of the machine body 1, thereby driving the support roller 16 to move up and down. When the intermediate part 3 approaches, the support arm is controlled to drive the support roller 16 to move down to avoid the intermediate part 3. After the intermediate part 3 passes, the support roller 16 is returned to its original position to maintain contact with the lower surface of the rail 6. In some embodiments, the support arm is elastically rotatably connected to the first part of the machine body 1. During normal operation, the support arm remains in an upward-leaning position so that the support roller 16 remains in contact with the lower surface of the rail 6. When the intermediate member 3 approaches, the support arm can rotate downwards to make way for the movement of the intermediate member 3. After the intermediate member 3 passes the support roller 16, the support arm drives the support roller 16 to spring back, causing the support roller 16 to contact the lower surface of the rail 6 again, thus providing support for the rail 6. In other embodiments, the support arm slides vertically to the first part of the machine body 1 and is provided with a power support member for controlling the vertical movement of the support arm. The power support component can be one of a hydraulic cylinder, pneumatic cylinder, electric push rod, etc., used to control the up and down movement of the support arm while providing support for the support arm. During normal operation, the support arm is kept at its highest position so that the support roller 16 remains in contact with the lower surface of the rail 6. When the intermediate part 3 approaches, the power support component drives the support arm to descend, causing the support roller 16 to leave the lower surface of the rail 6, thus making room for the intermediate part 3 to move. After the intermediate part 3 passes the position corresponding to the support roller 16, the power support component drives the support rod and the support roller 16 to rise to the highest position, so that the support roller 16 contacts the lower surface of the rail 6 again, thus providing support for the rail 6.When the rail 6 needs to be transported to the designated work station, the rail 6 can be placed on the friction roller 12. Under the action of the drive motor, the friction roller 12 uses friction to drive the rail 6 to move. Since the two limiting blocks 11 are symmetrically arranged on both sides of the rail 6 axis, the rail 6 moves along the axis under the action of the two limiting blocks 11 and driven by the friction roller 12. When the rail 6 moves to the second part of the machine body 1, it will reach the support roller 16, which supports and assists the rail 6 to keep horizontal, further ensuring the stability of the intermediate part 3 during the cutting and pushing of excess material and flash.

[0051] The cutting assembly 2 includes a robotic arm 21 fixedly mounted on a guide rail 14. The robotic arm 21 comprises a first rotating joint 211, a second rotating joint 212, and a third moving joint 213 connected in sequence. A cutting torch 22 is fixedly mounted at the end of the third moving joint. In one embodiment, the cutting torch 22 is a plasma arc cutting torch 22. The first rotating joint 211, the second rotating joint 212, and the third moving joint 213 ensure that the robotic arm 21 has three degrees of freedom. The robotic arm 21 is horizontally and parallel to the guide rail 14. The first joint can rotate around the guide rail 14, the second joint can rotate axially parallel to the first joint, and the third joint, i.e., the end of the robotic arm 21, can translate axially. This ensures the flexible movement of the robotic arm 21 during cutting operations, enabling it to complete the cutting operation from the edge of the excess material and flash of the intermediate part 3 towards the rail 6, and facilitating the adjustment of the cutting torch 22 position according to the specifications of the rail 6. Before removing the excess material and flash from the intermediate part 3, the cutting component 2 cuts the excess material and flash from the intermediate part 3, so that the excess material and flash from the intermediate part 3 are segmented, thereby reducing the instantaneous cutting length of the split-type pusher blade 42 during the subsequent pusher operation and thus reducing the pusher force required.

[0052] Among them, component 4 includes:

[0053] The tool holder is slidably mounted on the guide rail 14 at one end facing the second part of the machine body 1, and the tool holder is provided with a push hole for the steel rail 6 to pass through.

[0054] The split-type pusher 42 includes a first blade and a second blade symmetrically arranged on both sides of the pusher hole. Both the first blade and the second blade are slidably connected to the blade holder. Pusher blades for pushing away the excess material of the intermediate part 3 and the burrs of the rail 6 are provided on the opposite sides of the first blade and the second blade.

[0055] The locking cylinder assembly 41 has its base end and output end fixedly connected to the first cutter body and the second cutter body, respectively, so that the first cutter body and the second cutter body remain in abutting and locked state during the pushing operation.

[0056] The push-out cylinder assembly 5 is fixedly mounted on the frame 13 of the second part of the machine body 1, and the output end of the push-out cylinder assembly 5 passes through the frame 13 of the second part of the machine body 1 and is fixedly connected to the tool holder to control the movement of the tool holder on the guide rail 14.

[0057] The tool holder provides an installation position for the split-type pusher 42 and can drive the split-type pusher 42 to move along the guide rail 14. The pusher cylinder assembly 5 provides power for the movement of the tool holder and can control the tool holder to drive the split-type pusher 42 to perform pusher and reset actions. The locking cylinder assembly 41 can drive the first and second blades to move towards each other and lock them, ensuring that the cutting edges of the first and second blades are in the working position of pushing away the residual material of the intermediate part 3 and the burrs of the rail 6 during the pusher operation, thus preventing the first and second blades from moving during the pusher operation. Moreover, the pusher cylinder assembly 5 itself is a hydraulic cylinder. During the pusher operation, the vibration generated by the first and second blades can be transmitted to the pusher cylinder. Under the energy absorption effect of the hydraulic fluid, the vibration generated by the first and second blades is reduced, thus achieving the effect of vibration reduction. The use of a split-type pusher blade 42 allows the first and second blades to move vertically from both sides of the rail 6 to the pusher position on the surface of the rail 6. This does not obstruct the movement of the rail 6 during its insertion, facilitating its movement on the machine body 1. Furthermore, if a certain position needs to be replaced due to wear during pusher operation, only the corresponding blade needs to be replaced, avoiding the waste caused by replacing all blades. Due to the split design, the blade edges of both the first and second blades are open to the outside, facilitating maintenance.

[0058] Furthermore, considering that when removing the excess material of intermediate part 3 and the flash of rail 6, it is necessary to adhere to the entire rail 6, and that the resistance would be large if the entire piece were removed at once, removal blades for removing the excess material of intermediate part 3 and the flash of rail 6 are provided on the opposite sides of the first and second cutter bodies. Each removal blade is a stepped blade with a concave center and convex sides. The two removal blades are positioned opposite each other, and after the first and second cutter bodies abut against each other, the two removal blades form a removal hole that conforms to the outer contour of the cross-section of rail 6. When removing the material, the convex blades on both sides and the concave blade in the center will remove the excess material of intermediate part 3 and the flash of rail 6 in sequence. That is, the upper and lower parallel parts of rail 6 are removed first, and then the left and right side parts of rail 6 are removed. This further reduces the instantaneous shearing length of the removal blade 42 during removal, thereby reducing the required removal force.

[0059] This application also provides a method for removing excess material and burrs from friction-welded intermediate parts, as described below. Figures 5 to 8 To elaborate in detail.

[0060] A method for removing excess material and flash from friction-welded intermediate parts includes the following steps:

[0061] S1. Drive the friction roller 12 through the drive motor to drive the rail 6 into the pusher 42 opening of the first cutter body and the second cutter body, and send the rail 6 to be processed and the intermediate part 3 into the designated position.

[0062] S2. After the rail 6 is fed in, control the clamping cylinder group 15 to clamp the rail 6 from both sides so that the rail 6 is held in the position to be processed.

[0063] S3, control the cutting component 2 to cut the excess material and flash of the intermediate part 3;

[0064] S4. Control the pushing component 4 to push away the intermediate part 3 after the cutting operation is completed, and completely push away the remaining material and flash of the intermediate part 3 after cutting.

[0065] S5. After the push-off operation is completed, control the cutting component 2 and the push-off component 4 to retract to the initial position to prepare for the next cutting and push-off of the remaining material and flash of the intermediate part 3.

[0066] S6. The clamping cylinder assembly 15 retracts to the initial position to release the rail 6 and remove the rail 6.

[0067] In step S1, at the start of operation, the entire device is horizontally fixed to the ground. The friction roller 12 is connected to the machine body 1 via a rotating shaft and is driven by a motor to rotate clockwise, contacting the lower surface of the rail 6. Utilizing friction, the rail 6 moves horizontally to the right. The two sides of the rail bottom contact the inner surface of the limiting block 11, keeping the rail 6 straight and centered. The support roller 16 assists in supporting the rail 6. When the intermediate component 3 approaches the device, the support roller 16 is controlled to move downwards to avoid the intermediate component 3. After the intermediate component 3 passes, the support roller 16 is returned to its original position, maintaining contact with the lower surface of the rail 6. The intermediate component 3 moves with the rail 6 to a suitable position in the middle of the device, between the cutting component 2 and the pushing component 4, and then the roller stops rotating. Then, step S2 is completed, causing the clamp 17 to press tightly against both sides of the rail 6, thus clamping and fixing the rail 6. Afterwards, the cutting and pushing operations begin sequentially.

[0068] In S3, during the cutting operation, the plasma arc cutting torch 22 is brought close to one side surface of the intermediate part 3, and a kerf is cut from the outer edge of the intermediate part 3 to near the surface of the rail 6 on the remaining material and flash of the intermediate part 3. The robotic arm 21 has two rotational degrees of freedom about the horizontal axis and one translational degree of freedom along the horizontal axis. The first rotary joint 211 is driven by a motor and rotates axially about the guide rail 14. The rotation axis of the second rotary joint 212 is parallel to the first joint. The end of the third locating joint 213 is fixed to the cutting torch 22 and moves left and right in the horizontal direction, thereby controlling the end of the cutting torch 22 to approach the left side of the intermediate part 3 to a suitable cutting height, and moving the cutting torch 22 along a predetermined path to perform cutting. The cutting trajectory is as follows: Figure 7 As shown.

[0069] In S4, after the kerf cutting in S3 is completed, the plasma arc cutting torch 22 is removed to avoid interference between the cutting assembly 22 and the pusher assembly 44 during their movement. Then, the locking cylinder assembly 41 controls the first and second cutter bodies to move towards the intermediate rail 6 and remain locked, locking the split pusher 42 on the rail 6. Afterwards, along the axis of the rail 6, the pusher cylinder assembly 5 pushes the tool holder towards the intermediate part 3. When the surface of the pusher 42 contacts the intermediate part 3, the pusher cylinder rapidly advances to the left until the remaining part and flash of the intermediate part 3 are completely pushed away. The rapid advance distance is approximately twice the thickness of the intermediate part 3, achieving segmented pushing and automatic separation along the kerf. The pushed-away portion falls off naturally. The pushing trajectory is as follows... Figure 8 As shown.

[0070] In S5, after the removal is completed, the locking cylinder group 41 is reset, and the first and second cutter bodies move away from the rail 6, thereby providing space for the rail 6 to move in step S6. The removal cylinder drives the cutter holder to reset, so that the cutter holder moves on the guide rail 14 to the initial position near one end of the second part of the machine body 1, in preparation for the next cutting and removal of the remaining material and flash of the intermediate part 3.

[0071] In S6, the rail 6 is removed. Specifically, the clamping cylinder assembly 15 retracts, the clamp 17 connected to its piston rod retracts, the rail 6 is released and returned to its initial position, leaving enough space for the intermediate part 3 of the rail 6 to pass through in the next operation; the friction roller 12 rotates clockwise under the drive of the drive motor, moving the rail 6 to the right to the subsequent work station.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for removing excess material and flash from friction pad-shaped, low-temperature, large-section, thick-walled intermediate parts, characterized in that, The removal device used includes: The machine body includes a first part and a second part for supporting and fixing both ends of the steel rail, and a guide rail is fixedly provided between the first part and the second part; A cutting assembly is fixedly mounted on one end of the guide rail facing the first part of the machine body to cut the excess material and flash of the intermediate part after welding the third friction body. The cutting assembly includes a robotic arm fixedly mounted on the guide rail. The robotic arm includes a first rotary joint, a second rotary joint and a third movable joint connected in sequence. A plasma arc cutting gun is fixedly mounted at the end of the third movable joint. The push-off assembly is movably disposed on one end of the guide rail facing the second part of the machine body, so as to push off the excess material and flash of the intermediate part after welding the third friction body; The push-out component includes: A tool holder, which is slidably mounted on one end of the guide rail facing the second part of the machine body, and the tool holder is provided with a push hole for the steel rail to pass through; The split-type pusher includes a first blade and a second blade symmetrically arranged on both sides of the pusher hole. Both the first blade and the second blade are slidably connected to the blade holder. Pusher blades for pushing away intermediate material and flash are provided on the opposite sides of the first blade and the second blade. A locking cylinder is provided, wherein the base end and the output end of the locking cylinder are fixedly connected to the first cutter body and the second cutter body respectively, so that the first cutter body and the second cutter body remain in abutting and locked state during the pushing operation; The push-off cylinder is fixedly mounted on the frame of the second part, and the output end of the push-off cylinder passes through the frame of the second part and is fixedly connected to the tool holder to control the movement of the tool holder on the guide rail. The removal method includes the following steps: S1. Drive the friction rollers through the drive motor to insert the rail into the push-out cutting edge of the first and second cutter bodies, and send the rail and intermediate parts to be processed into the designated position. S2. After the rail is fed in, control the clamping cylinder to clamp the rail from both sides to keep the rail in the position to be processed. S3. Control the cutting assembly to cut the intermediate part scrap and flash. During the cutting operation, bring the plasma arc cutting torch close to one side of the intermediate part surface and cut a slit from the outer edge of the intermediate part to near the rail surface on the intermediate part scrap and flash, so that the intermediate part scrap and flash are segmented. S4. Control the pushing component to push away the intermediate parts after the cutting operation is completed, and completely push away the remaining material and flash of the intermediate parts after cutting. S5. After completing the push-out operation, control the cutting component and the push-out component to retract to the initial position to prepare for the next cutting and push-out of the intermediate part's excess material and flash. S6. The clamping cylinder retracts to the initial position to release the rail and remove it.

2. The method for removing excess material and flash from friction pad-shaped, low-temperature, large-section, thick-walled intermediate parts as described in claim 1, characterized in that, Both the first and second parts are provided with frames, and each frame has a fixed cavity for accommodating the rails. The direction of the fixed cavity is the same as the length direction of the guide rail, and the two fixed cavities are directly opposite each other. Several sets of clamping cylinders are provided through the side wall of each frame to clamp and fix the rails from both sides. The telescopic end of the clamping cylinder facing the rail is provided with a clamp for clamping the rails.

3. The method for removing excess material and flash from friction pad-shaped, low-temperature, large-section, thick-walled intermediate parts as described in claim 1, characterized in that... The first part is provided with a support arm at one end away from the second part of the machine body, and the end of the support arm is provided with a support roller for supporting the rail.

4. The method for removing excess material and flash from friction pad-shaped, low-temperature, large-section, thick-walled intermediate parts as described in claim 1, characterized in that, The second part has a support platform at one end of the frame away from the first part of the machine body. The support platform is provided with a limiting block for limiting the position of the rail. A friction roller that abuts against the rail is provided between the frame and the limiting block. The friction roller is fixedly connected to the support platform through a rotating shaft and is driven by a drive motor.

5. The method for removing excess material and flash from friction pad-shaped, low-temperature, large-section, thick-walled intermediate parts as described in claim 1, characterized in that, Each push-off blade is a stepped blade with a concave center and convex sides. The two push-off blades are set opposite each other, and after the first blade and the second blade abut against each other, the two push-off blades form a push-off hole that conforms to the outer contour of the rail cross section.

6. The method for removing excess material and flash from friction pad-shaped, low-temperature, large-section, thick-walled intermediate parts as described in claim 1, characterized in that, In step S4, after the kerf cutting in step S3 is completed, the plasma arc cutting gun is removed, the split pusher on the rail is locked, and then the pusher cylinder is controlled to push the tool holder towards the middle part along the rail axis.

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