Pipe end edge cutting device

Abstract

The present application relates to the technical field of pipe processing, in particular to a pipe end edge cutting processing device, which comprises a control component group and a cutting component group, the control component group is connected with the cutting component group in linkage; a positioning support part for stretching into the metal pipe interior to perform tensioning positioning. The present application realizes automatic waste cutting and self-adaptive linkage of radial diameter change, effectively avoids metal wire winding; at the same time, an internal radial expansion mechanism is adopted to strengthen the support of the pipe processing end, greatly enhances the end head rigidity and suppresses the cutting vibration, and effectively improves the edge processing precision of the heavy pipe end.

Description

Technical Field

[0001] This invention relates to the field of pipe processing technology, specifically to a pipe end edge cutting processing device. Background Technology

[0002] In the field of pipe fittings processing, it is often necessary to machine sealing grooves at the ends of pipe fittings for installing sealing rings. For large-diameter, thick-walled, or heavy metal pipe fittings, the high mass and rotational inertia of the fittings make high-speed rotation of the fitting itself unsuitable for machining. Therefore, existing technologies typically employ a process where the entire pipe fitting remains stationary, while the cutting tool rotates around the end of the fitting via a cutting drive.

[0003] However, this traditional processing method has the following technical problems in practical applications: Problems with chip entanglement and poor adaptability to diameter changes: When the cutting tool rotates around the end of a metal tube, it generates continuous ribbon-like or filamentous metal chips. Due to the high-speed rotation of the tool, these metal wires easily become entangled on the cutting tool. If not cleaned in time, they will seriously affect the machining accuracy of the cutting tool. Moreover, most existing chip breaking devices are fixed and cannot adapt to the radial position changes of the cutting tool caused by diameter changes during the cutting process, leading to chip breaking failure during diameter-changing machining.

[0004] The problem of insufficient end support rigidity: Traditional techniques typically only use external clamps (such as mounting platforms) to clamp and fix the middle and rear sections of the metal pipe as a whole, leaving the end section to be processed without effective internal rigid support. Under the action of rotational cutting force, the pipe end is prone to slight vibration or elastic deformation, thereby reducing the edge processing accuracy and surface quality of the pipe end. Summary of the Invention

[0005] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a pipe end edge cutting processing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The pipe end edge cutting processing device includes a mounting table, a cutting controller, and a cutting tool. It further includes: a cutting control unit for following the diameter change movement of the cutting tool and removing waste chips, comprising a control component group and a cutting component group, the control component group being linked to the cutting component group; and a positioning support for extending into the interior of the metal pipe to be processed for clamping and positioning, the positioning support including a rear central shaft and a second wing, the rear central shaft being slidably connected to the cutting component group, and the second wing being linked to the cutting component group.

[0007] Preferably, the control component assembly includes a collar member, a side guide frame is mounted on the outside of the collar member, the side guide frame and the collar member are slidably connected, the collar member has a groove corresponding to the cutting tool, a collar ring member is provided on one side of the collar member, a connecting rod is connected between the collar ring member and the collar member, and the two ends of the connecting rod are respectively rotatably connected to the collar ring member and the collar member, and the collar ring member is rotatably connected to an inner ring.

[0008] Preferably, the cutting assembly includes a front central shaft, which is rotatably connected to the side guide frame. A forming frame is provided on the front central shaft, and the front central shaft is provided with splines corresponding to the inner ring and the forming frame. The front central shaft contacts the inner ring and the forming frame through the splines.

[0009] Preferably, a wing frame is slidably connected to the frame, a cutting blade is mounted on the wing frame, and a fixed guide platform is slidably connected to the wing frame, which is connected to the front central shaft.

[0010] Preferably, the frame, the first wing frame, and the cutting blade are each provided in two sets, and the two sets of the frame, the first wing frame, and the cutting blade are symmetrically distributed on the front central axis.

[0011] Preferably, a spring is provided between the frame and the fixed guide platform to limit the relative movement tendency of the two.

[0012] Preferably, a friction plate for blocking torque transmission is provided between the frame and the inner ring.

[0013] Preferably, a back ring is connected to the end of the front central shaft away from the side guide frame.

[0014] Preferably, one end of the rear central shaft is slidably connected to the front central shaft, and a fixed guide platform is provided on the rear central shaft. The fixed guide platform is slidably connected to the wing frame. A front driven plate is slidably connected to the rear central shaft. The front driven plate contacts the back ring member, and the front driven plate can move along the axis of the rear central shaft.

[0015] Preferably, the second wing frame is slidably connected to the groove of the second fixed guide platform via a guide plate, and the second wing frame is connected to the front driven plate via a connecting rod, with the two ends of the connecting rod respectively rotatably connected to the second wing frame and the front driven plate.

[0016] Preferably, there are six sets of the fixed guide platform II, the wing frame II, and the front driven plate, and the six sets of the fixed guide platform II, the wing frame II, and the front driven plate are arranged in a ring on the rear center axis.

[0017] Preferably, an axial return spring is provided between the rear center shaft and the front center shaft.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a cutting control unit and utilizing the design of the control component group and the cutting component group, the cutting blade can form a spatially staggered cooperation with the rotating cutting tool. During the cutting process, it can automatically cut the continuous metal wire wrapped on the cutting tool, avoiding manual chip removal.

[0019] 2. At the same time, the structure has good adaptive capability for changing diameter. When the cutting tool moves radially to change diameter according to the processing requirements, the cutting blade can be synchronously driven to adjust its radial position through the follow-up of the inner ring and the frame and other components. This ensures that the cutting blade can maintain precise contact with the cutting tool under different processing pipe diameters, thus ensuring the continuity and stability of chip breaking operation. 3. Before processing, insert it into the metal tube. As the cutting tool moves axially, the relative motion between the front and rear central shafts pushes the front driven plate through the back ring and drives the six sets of wing frames arranged in a ring to expand radially outward along the fixed guide platform, thereby tightly supporting the inner wall of the processed end of the metal tube.

[0020] 4. It forms an internal and external cooperative clamping mechanism with the external mounting platform, which greatly enhances the structural rigidity of the metal pipe end, effectively suppresses the mechanical vibration and deformation of the pipe wall during the cutting process, and thus significantly improves the processing accuracy of the pipe end edge. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cutting control unit, mounting platform, metal tube, cutting controller, and cutting tool of the present invention. Figure 3 This is a schematic cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the cutting controller, cutting tool, cutting control unit, and positioning support of the present invention. Figure 5 This is a schematic diagram of the cutting control part and the positioning support part of the present invention.

[0022] In the diagram: 11. Metal pipe; 12. Mounting platform; 13. Cutting controller; 14. Cutting blade; 02. Cutting control unit; 21. Control component assembly; 211. Collar assembly; 212. Side guide frame; 213. Collar assembly; 214. Inner ring; 22. Cutting component assembly; 221. Front central shaft; 222. Form frame; 223. Wing frame one; 224. Cutting blade; 225. Fixed guide platform one; 226. Back ring assembly; 03. Positioning support; 31. Rear central shaft; 32. Front driven plate; 33. Wing frame two; 34. Fixed guide platform two. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] One embodiment provided by the present invention: refer to Figures 1-2 The pipe end edge cutting processing device includes a metal pipe 11, a mounting platform 12, a cutting controller 13, and a cutting tool 14, and further includes: Cut-off control unit 02 and positioning support unit 03.

[0025] refer to Figures 3-5 The cutting control unit 02 includes a control component group 21 and a cutting component group 22. The control component group 21 includes a collar member 211. A side guide frame 212 is mounted on the outside of the collar member 211. The side guide frame 212 and the collar member 211 are slidably connected. The collar member 211 has a groove corresponding to the cutting tool 14. A collar ring member 213 is provided on one side of the collar member 211. A connecting rod is connected between the collar ring member 213 and the collar member 211. The two ends of the connecting rod are rotatably connected to the collar ring member 213 and the collar member 211, respectively. An inner ring 214 is rotatably connected to the collar ring member 213.

[0026] The cutting assembly 22 includes a front central shaft 221, which is rotatably connected to a side guide frame 212. A forming frame 222 is mounted on the front central shaft 221. The front central shaft 221 has splines corresponding to the inner ring 214 and the forming frame 222, and the front central shaft 221 contacts the inner ring 214 and the forming frame 222 via the splines. A wing frame 223 is slidably connected to the forming frame 222, and a fixed guide platform 225 is slidably connected to the wing frame 223. The wing frame 223 is equipped with a cutting blade 224. The frame 222, the wing frame 223 and the cutting blade 224 are provided in two sets, and the two sets of frame 222, the wing frame 223 and the cutting blade 224 are symmetrically distributed on the front central shaft 221. The cutting blade 224 is used to cooperate with the rotating cutting tool 14 to cut the metal wire wound on the cutting tool 14. The fixed guide table 225 is connected to the front central shaft 221.

[0027] The cutting tool 14 is driven to rotate by the cutting controller 13 during operation, cutting the end of the metal tube 11. During this process, the collar 211 sleeved on the outside of the cutting tool 14 will drive the control component group 21 to rotate together. The side guide frame 212 rotates on the front central shaft 221, and the collar 213 rotates on the inner ring 214. During the cutting process, the cutting tool 14 will move radially through control, thereby driving the collar 211 to move together in the groove of the side guide frame 212. The moving collar 211 drives the collar 213 to move axially along the front central shaft 221 through the action of the connecting rod. When the cutting tool 14 moves radially inward, the inner ring 214 moves along the axis towards the form frame 222. When the cutting tool 14 moves radially outward, the inner ring 214 moves along the axis away from the form frame 222.

[0028] A spring is provided between the form frame 222 and the fixed guide platform 225. Under the action of the spring, the form frame 222 is always in contact with the inner ring 214. A friction plate is provided between the form frame 222 and the inner ring 214, so that the rotational motion of the collar 213 will not be transmitted to the form frame 222, but only the axial motion will be transmitted. When the cutting tool 14 moves radially inward, the inner ring 214 pushes the frame 222 to the right. Consequently, the wing 223 moves radially toward the front central axis 221 under the guidance of the groove in the frame 222, and the cutting blade 224 is also driven. When the collar 211 moves radially outward, the inner ring 214 is driven to move to the left along the axis, and the frame 222, which is in contact with the cutting tool, also moves to the left. At this time, the wing 223 moves radially outward along the front central axis 221 under the guidance of the groove in the frame 222. This design of the control component group 21 and the cutting component group 22 ensures that the cutting blade 224 can always maintain contact with the cutting tool 14, and the radial displacement of the cutting tool 14 will not prevent the cutting of the metal wire.

[0029] The front central shaft 221 is connected to a back ring 226 at the end away from the side guide frame 212.

[0030] The positioning support 03 includes a rear central shaft 31, one end of which is slidably connected to the front central shaft 221. A fixed guide platform 34 is provided on the rear central shaft 31, and a wing frame 33 is slidably connected in the fixed guide platform 34. The wing frame 33 is slidably connected to the groove of the fixed guide platform 34 through a guide plate. One side of the wing frame 33 is in contact with the inner wall of the metal tube 11. The wing frame 33 is connected to a front driven plate 32 through a connecting rod, and the two ends of the connecting rod are rotatably connected to the wing frame 33 and the front driven plate 32, respectively. The front driven plate 32 is in contact with the back ring 226. The front driven plate 32 is slidably connected to the rear central shaft 31 and can move along the axis of the rear central shaft 31.

[0031] The fixed guide platform 24, wing frame 23, and front driven plate 32 are provided in six sets, and the six sets of fixed guide platform 24, wing frame 23, and front driven plate 32 are arranged in a ring on the rear central axis 31. A spring is provided between the rear central axis 31 and the front central axis 221.

[0032] Working principle: Preparation and initial axial positioning When the end of the metal tube 11 needs to be cut, the metal tube 11 is first placed on the mounting platform 12, and the metal tube 11 is stably pressed by the hydraulic clamping mechanism (such as a hydraulic telescopic rod) on the mounting platform 12. Then, the cutting control unit 02 and the positioning support unit 03 are inserted into the metal tube 11 from the end to be processed; at this time, the edges of the ring-shaped wing brackets 33 contact the inner wall of the metal tube 11, thereby achieving the initial axial positioning of the cutting control unit 02 and the positioning support unit 03 inside the metal tube 11.

[0033] Axial propulsion and internal locking Next, the cutting controller 13 is advanced toward the metal tube 11. During this process, the cutting tool 14 on the cutting controller 13 passes through the groove of the collar 211, causing the collar 211 to fit around the outer circumference of the cutting tool 14. As the cutting controller 13 continues to advance, before the cutting tool 14 makes complete contact with the end of the metal tube 11 to be cut: Because there is frictional resistance between the wing frame 233 and the inner wall of the metal tube 11, and the front central shaft 221 is driven by the cutting tool 14 and the control component group 21 to move towards the rear central shaft 31, the spring between the rear central shaft 31 and the front central shaft 221 is compressed and stores force to contract. At the same time, the back ring 226 at one end of the front central shaft 221 pushes the front driven plate 32 to move along the axis of the rear central shaft 31 toward the fixed guide platform 34; The forward plate 32 moves and pushes the second wing 33 radially outward along the groove of the second fixed guide platform 34 via the linkage mechanism, thereby tightly supporting it against the inner wall of the metal tube 11. At this point, the cut-off control unit 02 and the positioning support unit 03 are completely locked inside the metal tube 11.

[0034] Rotary cutting and staggered chip breaking The cutting tool 14 is then activated, causing it to rotate under the drive of the cutting controller 13, thereby performing axial rotary cutting on the end of the metal tube 11. During the cutting process, the rotating cutting tool 14 drives the collar 211, the side guide 212, and the collar ring 213 in the control component assembly 21 to rotate together (where the side guide 212 rotates on the front central shaft 221, and the collar ring 213 rotates on the inner ring 214).

[0035] The rotating cutting tool 14 and the relatively stationary cutting blade 224 maintain a positional fit: each time the cutting tool 14 rotates past the cutting blade 224, the two form an interlaced shearing structure, which can cut the cutting metal wire (chip) wrapped on the cutting tool 14 in time, thereby effectively preventing metal chips from wrapping on the tool.

[0036] Radial diameter variation and follow-up adjustment During the cutting process, the cutting tool 14 will undergo radial diameter change according to the end machining requirements. When the cutting tool 14 changes diameter, it will drive the collar 211 to move radially in the groove of the side guide frame 212, and through the linkage mechanism, drive the collar 213 and the inner collar 214 to move axially along the front central axis 221. Thus, guided by the form frame 222 and the fixed guide table 225, the cutting blade 224 will undergo synchronous radial position change.

[0037] The specific linkage process is as follows: When moving radially inward: the inner ring 214 pushes the frame 222 to the right along the axis, and then the wing frame 223 moves radially inward toward the front central axis 221 under the guidance of the groove in the frame 222, driving the cutting blade 224 to follow inward; When moving radially outward: the inner ring 214 moves to the left along the axis, and the frame 222, which is kept in contact under the action of spring reset, also moves to the left. At this time, the wing 223 moves radially outward along the front central axis 221 under the guidance of the slide groove of the frame 222, driving the cutting blade 224 to retract outward.

[0038] The follow-up design of the control component group 21 and the cutting component group 22 ensures that the cutting blade 224 can always maintain a precise relative position with the cutting tool 14, and will not cause chip breaking failure due to radial displacement of the cutting tool 14.

[0039] End rigid support and improved machining accuracy During the overall cutting process, the six sets of ring-shaped wing frames 233 are tightly supported on the inner wall near the machining end of the metal tube 11, thereby greatly improving the structural rigidity and positioning stability of the metal tube 11 end during cutting operations. Compared with the existing technology that only fixes the metal tube 11 externally with clamping rods, this device provides multi-point ring support from the inside, which better ensures the stability of the metal tube 11 end, thus significantly improving the machining accuracy and surface quality of the end.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pipe fitting end edge cutting processing device, comprising a mounting table, a cutting controller, and a cutting tool, characterized in that, It also includes: A cutting control unit for following the diameter change movement of the cutting tool and removing waste chips includes a control component group and a cutting component group, wherein the control component group and the cutting component group are linked together. A positioning support for inserting into the metal tube to be processed for clamping and positioning, the positioning support includes a rear central shaft and a second wing frame, the rear central shaft is slidably connected to the cutting component assembly, and the second wing frame is linkedly connected to the cutting component assembly; The control component assembly includes a collar member, a side guide frame is mounted on the outside of the collar member, the side guide frame and the collar member are slidably connected, the collar member has a groove corresponding to the cutting tool, a collar ring member is provided on one side of the collar member, a connecting rod is connected between the collar ring member and the collar member, and the two ends of the connecting rod are respectively rotatably connected to the collar ring member and the collar member, and the collar ring member is rotatably connected to an inner ring. The cutting assembly includes a front central shaft, which is rotatably connected to the side guide frame. A shape frame is provided on the front central shaft. The front central shaft is provided with a spline corresponding to the inner ring and the shape frame. The front central shaft is connected to the inner ring and the shape frame through the spline. A wing frame is slidably connected to the frame, a cutting blade is mounted on the wing frame, and a fixed guide platform is slidably connected to the wing frame, which is connected to the front central shaft.

2. The pipe fitting end edge cutting processing device according to claim 1, characterized in that: The frame, the first wing, and the cutting blade are each provided in two sets, and the two sets of the frame, the first wing, and the cutting blade are symmetrically distributed on the front central axis.

3. The pipe fitting end edge cutting processing device according to claim 1, characterized in that: A spring is provided between the frame and the fixed guide platform to limit their relative motion tendency.

4. The pipe fitting end edge cutting processing device according to claim 1, characterized in that: A friction plate for blocking torque transmission is provided between the frame and the inner ring.

5. The pipe fitting end edge cutting device according to claim 1, characterized in that: A back ring is connected to the end of the front central shaft away from the side guide frame.

6. The pipe fitting end edge cutting device according to claim 5, characterized in that: One end of the rear central shaft is slidably connected to the front central shaft. A fixed guide platform is provided on the rear central shaft. The fixed guide platform is slidably connected to the wing frame. A front driven plate is slidably connected to the rear central shaft. The front driven plate contacts the back ring and can move along the axis of the rear central shaft.

7. The pipe fitting end edge cutting device according to claim 6, characterized in that: The second wing frame is slidably connected to the groove of the second fixed guide platform via a guide plate. The second wing frame is connected to the front driven plate via a connecting rod, and the two ends of the connecting rod are respectively rotatably connected to the second wing frame and the front driven plate.

8. The pipe fitting end edge cutting processing device according to claim 6, characterized in that: The fixed guide platform II, the wing frame II, and the front driven plate are each provided with six sets, and the six sets of the fixed guide platform II, the wing frame II, and the front driven plate are arranged in a ring on the rear center axis.

9. The pipe fitting end edge cutting device according to claim 6, characterized in that: An axial return spring is provided between the rear center shaft and the front center shaft.

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