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CN-121973295-A - High-precision cutting device for thin-wall pipe

CN121973295ACN 121973295 ACN121973295 ACN 121973295ACN-121973295-A

Abstract

The invention discloses a high-precision cutting device for a thin-wall pipe, which belongs to the technical field of machining and has the technical scheme that the high-precision cutting device comprises a workbench and a cutting module, wherein an inclined surface for supporting and guiding the pipe is arranged on the workbench, a blocking part for blocking the pipe is arranged on the workbench, the blocking part is positioned at the lowest part of the inclined surface, two limiting seats are slidably arranged on the workbench, two driving modules are arranged on the workbench, inner supporting pieces are respectively arranged on the two limiting seats and are respectively used for driving the corresponding limiting seats to slide so as to enable the two inner supporting pieces to respectively abut against the end parts of the corresponding end of the pipe, the two inner supporting pieces are respectively inserted into an inner cavity of the pipe from the corresponding end of the pipe, the two inner supporting pieces can be radially expanded so as to support the inner cavity wall of the pipe or radially retracted so as to be far away from the inner cavity wall of the pipe, a cutting channel is formed between the two inner supporting pieces at intervals, and the cutting channel is used for avoiding the cutting end of the cutting module.

Inventors

  • LIN LIBING

Assignees

  • 锦霸科技股份有限公司

Dates

Publication Date
20260505
Application Date
20260302

Claims (10)

  1. 1. A high-precision cutting device for a thin-wall pipe is characterized by comprising a workbench (1) and a cutting module (3), wherein an inclined surface (2) for supporting and guiding the pipe (25) is arranged on the workbench (1), a blocking part (4) for blocking the pipe (25) is arranged on the workbench (1), the blocking part (4) is located at the lowest position of the inclined surface (2), two limiting seats (5) are slidably arranged on the workbench (1), two driving modules (6) are arranged on the workbench (1), inner supporting pieces (7) are arranged on the two limiting seats (5), the two driving modules (6) are respectively used for driving the corresponding limiting seats (5) to slide so as to enable the two inner supporting pieces to be respectively abutted against the end parts of the corresponding ends of the pipe (25), the two inner supporting pieces (7) are respectively inserted into inner cavities of the pipe (25), the two inner supporting pieces (7) can be radially expanded to further support inner cavity walls of the pipe (25) or the two inner supporting pieces (25) to be radially retracted away from a cutting channel between the two inner cavity walls (25), and the two inner supporting pieces are used for cutting channel separation channels (3) are formed.
  2. 2. The high-precision cutting device for the thin-wall pipe is characterized in that a truss manipulator (8) is arranged on the workbench (1), the truss manipulator (8) is provided with two blanking clamping claws (9), the two blanking clamping claws (9) are respectively used for clamping corresponding pipe sections, and the limiting seat (5) is matched to slide so that the pipe sections are separated from the corresponding inner supporting pieces (7) and conveyed to a discharging station.
  3. 3. The high-precision cutting device for the thin-wall pipe according to any one of claims 1 or 2, wherein the inner supporting member (7) comprises an inner core (71) and an outer sleeve (72), the outer sleeve (72) is arranged on the outer side of the inner core (71), an annular oil cavity (10) is formed between the inner core (71) and the outer sleeve (72), an oil inlet channel (11) and an oil return channel (12) which are communicated with the annular oil cavity (10) are formed in the inner core (71), a deformation part (24) is formed in the outer sleeve (72), and oil in the annular oil cavity (10) can deform the deformation part (24) to be abutted against the inner cavity wall of the pipe (25).
  4. 4. A high-precision cutting apparatus for thin-walled tubing as set forth in claim 3, wherein said deformation portion (24) is made of a material having thermal conductivity and elasticity.
  5. 5. A high-precision cutting device for a thin-wall pipe according to claim 3, wherein the end part of the outer sleeve (72) is provided with a first annular scraping edge (13), the other end of the outer sleeve (72) is provided with a second annular scraping edge (14), the cutting edge of the first annular scraping edge (13) and the cutting edge of the second annular scraping edge (14) are arranged along the axial direction of the pipe (25), and the cutting edge of the first annular scraping edge (13) and the cutting edge of the second annular scraping edge (14) are both abutted against the inner cavity wall of the pipe (25).
  6. 6. The high-precision cutting device for the thin-wall pipe according to claim 5, wherein the first annular scraping edge (13) is slidably arranged on the outer sleeve (72), a limiting ring (26) is connected to the end portion of the inner core in a threaded mode, a spring (15) is arranged between the first annular scraping edge (13) and the limiting ring (26), a limiting end face (16) used for limiting the first annular scraping edge (13) is arranged on the outer sleeve (72), and the first annular scraping edge (13) can be slidably matched with the limiting ring (26) to squeeze the spring (15), so that the first annular scraping edge (13) extends out of the end portion of the cutting end of the pipe section.
  7. 7. The high-precision cutting device for the thin-wall pipe according to claim 6, wherein the outer sleeve (72) is provided with a sliding cavity (17), the annular scraping edge I (13) is provided with a linkage part (18), the linkage part (18) is slidably arranged in the sliding cavity (17), the outer sleeve (72) is provided with a control flow passage (23), the control flow passage (23) is communicated with the sliding cavity (17), and when oil enters the sliding cavity (17) through the control flow passage (23), the linkage part (18) can be pushed to slide, so that the annular scraping edge I (13) slides and is matched with the limiting ring (26) to squeeze the spring (15).
  8. 8. The high-precision cutting device for the thin-wall pipe according to claim 7, wherein the inner core (71) is provided with a blowing nozzle (19), the blowing nozzle (19) is communicated with the air supply structure (21) through an air supply channel (20), and a blowing hole of the blowing nozzle (19) is aligned to the bottom of the inner cavity wall of the pipe section.
  9. 9. The high-precision cutting device for the thin-wall pipe according to claim 8, wherein the air supply structure (21) comprises an air cylinder (212), a piston member (213), a first one-way valve (214) and a first one-way valve (214), the piston member (213) is slidably arranged in the air cylinder (212), the outer end of the piston member (213) extends out of the air cylinder (212) to be connected with the limiting seat (5), the first one-way valve (214) is arranged at an air inlet of the air cylinder (212), the second one-way valve (215) is arranged at an air outlet of the air cylinder (212), and the second one-way valve (215) is communicated with the air supply channel (20).
  10. 10. The high-precision cutting device for the thin-wall pipe according to claim 1, wherein two grating scales (22) are arranged on the workbench (1), and the two grating scales (22) respectively correspond to the corresponding limiting seats (5).

Description

High-precision cutting device for thin-wall pipe Technical Field The invention belongs to the technical field of machining, and particularly relates to a high-precision cutting device for a thin-wall pipe. Background The pipe is an indispensable basic material in the construction engineering, the quality of the pipe directly determines the performance and reliability of the final pipe, different pipes need to be selected as corresponding pipes, in many types, the thin-wall pipe is often applied to occasions with strict weight and cost control due to thinner wall thickness, light weight and material saving, however, the thin-wall pipe has a relatively weak structural strength, and the great challenges are faced in the cutting process because the applied pressure is extremely easy to cause flattening or deformation of a pipe orifice, and the thin-wall pipe is easy to slightly displace when stressed, so that the cutting error is increased, the perpendicularity between the end face of a cut and the axis of the pipe is difficult to ensure, and the assembly precision of the thin-wall pipe is directly influenced, so that the thin-wall pipe is difficult to meet the requirement of high-precision engineering assembly. Disclosure of Invention The invention aims to solve the problems in the prior art and provides a high-precision cutting device for a thin-wall pipe, and the technical problem to be solved by the invention is how to ensure the cutting precision of the thin-wall pipe. The technical aim of the invention can be achieved through the following technical scheme that the high-precision cutting device for the thin-wall pipe comprises a workbench and a cutting module, wherein an inclined surface for supporting and guiding the pipe is arranged on the workbench, a blocking part for blocking the pipe is arranged on the workbench, the blocking part is positioned at the lowest position of the inclined surface, two limiting seats are slidably arranged on the workbench, two driving modules are arranged on the workbench, inner supporting pieces are arranged on the two limiting seats, the two driving modules are respectively used for driving the corresponding limiting seats to slide so as to enable the two limiting seats to respectively abut against the end parts of the corresponding ends of the pipe, the two inner supporting pieces are respectively inserted into an inner cavity of the pipe from the corresponding ends of the pipe, the two inner supporting pieces can radially expand so as to tightly support the inner cavity wall of the pipe or radially retract so as to be far away from the inner cavity wall of the pipe, a cutting channel is formed between the two inner supporting pieces at intervals, and the cutting channel is used for avoiding the cutting ends of the cutting module. In the high-precision cutting device for the thin-wall pipe, the truss manipulator is arranged on the workbench and is provided with two blanking clamping claws, the two blanking clamping claws are respectively used for clamping corresponding pipe sections, and the limiting seat is matched to slide so that the pipe sections are separated from the corresponding inner supporting pieces and are conveyed to the discharging station. In the high-precision cutting device for the thin-wall pipe, the inner supporting piece comprises an inner core and an outer sleeve, the outer sleeve is arranged on the outer side of the inner core, an annular oil cavity is formed between the inner core and the outer sleeve, an oil inlet channel and an oil return channel which are communicated with the annular oil cavity are arranged on the inner core, a deformation part is arranged on the outer sleeve, and oil in the annular oil cavity can deform the deformation part to be abutted against the inner cavity wall of the pipe. In the above-described high-precision cutting device for thin-walled tubing, the deformation portion is made of a material having thermal conductivity and elasticity. In the high-precision cutting device for the thin-wall pipe, the first annular scraping edge is arranged at the end part of the outer sleeve, the second annular scraping edge is arranged at the other end of the outer sleeve, the first annular scraping edge and the second annular scraping edge are all arranged along the axial direction of the pipe, and the first annular scraping edge and the second annular scraping edge are all attached to the inner cavity wall of the pipe. In the high-precision cutting device for the thin-wall pipe, the first annular scraping edge is slidably arranged on the outer sleeve, the end part of the inner core is in threaded connection with the limiting ring, a spring is arranged between the first annular scraping edge and the limiting ring, a limiting end face used for limiting the first annular scraping edge is arranged on the outer sleeve, and the first annular scraping edge can be slidably matched with the limiting ring to squeeze the spring, so that the fi