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CN-121973033-A - Inner and outer wall polishing device for metal pipe fitting

CN121973033ACN 121973033 ACN121973033 ACN 121973033ACN-121973033-A

Abstract

The invention discloses an inner and outer wall polishing device for a metal pipe, which relates to the field of metal pipe polishing and comprises a tool clamping mechanism and an inner and outer synchronous polishing mechanism, wherein the inner and outer synchronous polishing mechanism comprises a bottom plate, a sliding seat and a polishing plate, the sliding seat is slidably arranged on the bottom plate, the polishing plate is fixed on the top of the sliding seat, an outer polishing seat and an inner polishing seat are slidably arranged on the polishing plate, the outer polishing seat and the inner polishing seat both have degrees of freedom of moving along the vertical direction, an inner polishing shaft and an outer polishing shaft are respectively rotatably arranged on the inner polishing seat and the outer polishing seat, an inner polishing head and an outer polishing head are respectively connected on the inner polishing shaft and the outer polishing shaft, the tool clamping mechanism comprises a supporting table and a clamping frame, a tool disc is rotatably arranged on the clamping frame, a plurality of outer arc clamping plates and a plurality of inner arc clamping plates are arranged on the tool disc, and the outer arc clamping plates and the inner arc clamping plates all have degrees of freedom of moving along the radial direction of the tool disc, so that the inner and outer wall polishing operation of the pipe can be synchronously finished, and the processing period is greatly shortened.

Inventors

  • Kang Zhigui
  • ZHANG XUEDONG

Assignees

  • 四川明珠金属材料有限公司

Dates

Publication Date
20260505
Application Date
20260310

Claims (10)

  1. 1. The utility model provides an inside and outside wall burnishing device of metal pipe fitting, its characterized in that includes frock fixture and inside and outside synchronous polishing mechanism, inside and outside synchronous polishing mechanism includes bottom plate (1), slide (2), polishing board (3), interior polishing axle (4) and outer polishing axle (5), slide (2) slidable mounting is on bottom plate (1), polishing board (3) are fixed at the top of slide (2), slide on polishing board (3) and be provided with outer polishing seat (6) and interior polishing seat (7), outer polishing seat (6) and interior polishing seat (7) all have the degree of freedom of following vertical direction and remove, interior polishing axle (4) and outer polishing axle (5) rotate respectively and install on inner polishing seat (7) and outer polishing seat (6), interior polishing axle (4) and outer polishing axle (5) are last to be connected with interior polishing head (8) and outer polishing head (9) respectively, frock fixture includes brace table (10) and holder (11), brace table (10) are located between bottom plate (1) and holder (11), outer lane (12) are installed in the centre gripping subassembly (12) and are installed to centre gripping dish (13), the outer arc clamping plates (13) are arranged around the circumferential direction of the tooling disc (12), the inner ring clamping assembly comprises a plurality of inner arc clamping plates (14), the inner arc clamping plates (14) are arranged around the circumferential direction of the tooling disc (12), the inner arc clamping plates (14) and the outer arc clamping plates (13) are arranged in a staggered mode along the circumferential direction of the tooling disc (12), and the outer arc clamping plates (13) and the inner arc clamping plates (14) all have the freedom degree of radial movement along the tooling disc (12).
  2. 2. The inner and outer wall polishing device for the metal pipe fitting according to claim 1, wherein a first mounting groove (15) is formed in the polishing plate (3), a first screw rod (16) is vertically arranged in the first mounting groove (15), the first screw rod (16) is rotationally connected with the polishing plate (3), the outer polishing seat (6) is in threaded sleeve connection with the first screw rod (16), a first motor (17) is mounted at the top of the polishing plate (3), an output shaft of the first motor (17) is in transmission connection with the first screw rod (16), an outer polishing motor (18) is mounted on the outer polishing seat (6), and an output shaft of the outer polishing motor (18) is in transmission connection with the outer polishing shaft (5).
  3. 3. The inner and outer wall polishing device for the metal pipe fitting according to claim 2, wherein a second installation groove (19) is formed in the polishing plate (3), a second screw rod (20) is vertically arranged in the second installation groove (19), the second screw rod (20) is rotationally connected with the polishing plate (3), the inner polishing seat (7) is in threaded sleeve connection with the second screw rod (20), a second motor (21) is installed at the bottom of the polishing plate (3), an output shaft of the second motor (21) is in transmission connection with the second screw rod (20), an inner polishing motor (22) is installed on the inner polishing seat (7), and an output shaft of the inner polishing motor (22) is in transmission connection with an inner polishing shaft (4).
  4. 4. The inner and outer wall polishing device for the metal pipe fitting according to claim 1, characterized in that a driving cavity (23) is arranged in the tool disc (12), a first driving disc (24) is rotationally arranged in the driving cavity (23), a first plane thread (25) is arranged on the end face, close to the supporting table (10), of the first driving disc (24), a first face tooth block (26) is meshed on the first plane thread (25), one first face tooth block (26) is arranged on each inner arc clamping plate (14), a first guide groove (27) is formed in the end face, close to the supporting table (10), of the tool disc (12) and close to the inner arc clamping plates (14), the first guide groove (27) is communicated with the driving cavity (23), the inner arc clamping plates (14) are slidably matched with the first guide grooves (27), and one ends of the inner arc clamping plates (14) are fixedly connected with the first face tooth blocks (26).
  5. 5. The inner and outer wall polishing device for the metal pipe fitting according to claim 4, wherein a first worm wheel (28) is sleeved on the first driving disc (24), the first worm wheel (28) is meshed with a first worm (29), the first worm (29) is rotationally connected with the tooling disc (12), a first tooling motor (30) is mounted on the side wall of the tooling disc (12), and an output shaft of the first tooling motor (30) is in transmission connection with the first worm (29).
  6. 6. The inner and outer wall polishing device for the metal pipe fitting according to claim 4, wherein a second driving disc (31) is rotationally arranged in the driving cavity (23), the first driving disc (24) and the second driving disc (31) are arranged at intervals along the axial direction of the tool disc (12), a second planar thread (32) is arranged on the end surface, close to the supporting table (10), of the second driving disc (31), a second face tooth block (33) is meshed on the second planar thread (32), each outer arc-shaped clamping plate (13) is provided with a second face tooth block (33), a second guide groove (34) is formed in the end surface, close to the supporting table (10), of the tool disc (12), of the end surface, close to the supporting table (10), of the outer arc-shaped clamping plate (13), the second guide groove (34) is communicated with the driving cavity (23), the outer arc-shaped clamping plate (13) is slidably adapted to the second guide groove (34), an L-shaped connecting rod (35) is connected with the outer arc-shaped clamping plate (13), and the L-shaped connecting rod (35) bypasses the first face tooth block (24).
  7. 7. The inner and outer wall polishing device for the metal pipe fitting according to claim 6, wherein a second worm wheel (36) is sleeved on the second driving disc (31), a second worm (37) is meshed with the second worm wheel (36), the second worm (37) is rotationally connected with the tooling disc (12), a second tooling motor (38) is mounted on the side wall of the tooling disc (12), and an output shaft of the second tooling motor (38) is in transmission connection with the second worm (37).
  8. 8. The inner and outer wall polishing device for metal pipe fittings according to claim 1, wherein the clamping frame (11) comprises a fixed base (39), a supporting cylinder (40) and a clamping plate (41), the supporting cylinder (40) is vertically installed on the fixed base (39), a telescopic shaft of the supporting cylinder (40) is connected with the clamping plate (41), and the tool disc (12) is rotatably installed on the clamping plate (41).
  9. 9. The inner and outer wall polishing device for the metal pipe fitting according to claim 8, wherein a driving motor (42) is installed on the clamping plate (41), an output shaft of the driving motor (42) is connected with a driving gear (43), a driven gear (44) is sleeved on the tooling disc (12), and the driven gear (44) is meshed with the driving gear (43).
  10. 10. The inner and outer wall polishing device for the metal pipe fitting according to claim 1, wherein a sliding rail (45) is fixed on the bottom plate (1), a sliding rail sliding block is slidably arranged on the sliding rail (45), the sliding seat (2) is installed on the sliding rail sliding block, a pushing cylinder (46) is horizontally installed on the bottom plate (1), and a telescopic shaft of the pushing cylinder (46) is connected with the sliding seat (2).

Description

Inner and outer wall polishing device for metal pipe fitting Technical Field The invention relates to the field of metal pipe polishing, in particular to an inner and outer wall polishing device for a metal pipe fitting. Background The polishing of the inner wall and the outer wall of the metal pipe fitting is a key process for improving the surface finish, assembly suitability and corrosion resistance of the metal pipe fitting, and is widely applied to the high-end manufacturing fields of automobile hydraulic pipe fittings, aerospace pipes, precise fluid pipe fittings and the like. In polishing operation, the expansion and contraction movement of the inner polishing mechanism and the radial adjustment movement of the outer polishing mechanism have natural space overlapping areas, and mechanical interference between the mechanisms is avoided to become a core premise for designing the polishing device. In order to solve the interference problem, the main technical proposal in the industry at present adopts a processing mode that internal and external polishing actions are separately and independently carried out, namely, the inner wall polishing operation is finished by clamping the outer wall of a metal pipe through the same set of equipment or different equipment, and the outer wall polishing is finished by clamping the inner wall of the pipe after the internal polishing mechanism is completely reset and separated from a processing station, or the polishing process is finished according to the sequence of' before and after. The step-by-step processing mode can fundamentally avoid the motion interference among the inner polishing shaft, the outer polishing head and the clamping tool, ensure the stability of single polishing action, realize the full-exposure polishing of the inner wall and the outer wall, but expose the efficiency bottleneck of the core in the actual mass production application, and particularly show the following aspects: The core processing efficiency is obviously lower, the inner polishing working procedures and the outer polishing working procedures are arranged in series in a step polishing mode, and the effective processing time of the equipment is greatly divided. The core time consumption of polishing operation is only the friction processing stage of the polishing head and the pipe wall surface, and in the step mode, the non-processing auxiliary action duty ratio of the inner polishing mechanism is extremely high, such as the withdrawal of the inner polishing mechanism, the positioning adjustment of the outer polishing mechanism, the station switching of the pipe and the like. For standard metal pipe fittings processed in batches, the total working time of step polishing is about 2 times of the theoretical synchronous working time, and the capacity requirement of high-end manufacturing industry on pipe fitting processing cannot be met. In order to realize step-by-step processing, the pipe fitting needs to be detached from the clamping mechanism and then clamped again to adapt to another polishing procedure, and the positioning and aligning operation in the secondary clamping process further prolongs the single-piece processing period. Even if the step polishing structure without disassembly is adopted, the alternate switching of the inner polishing mechanism and the outer polishing mechanism also needs to complete the mechanism resetting and refeeding through complex program control, and compared with synchronous processing, a great amount of mechanism movement waiting time is additionally increased. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides an inner and outer wall polishing device for a metal pipe fitting, which is used for solving the defects of the prior art. The inner and outer wall polishing device of the metal pipe fitting comprises a tool clamping mechanism and an inner and outer synchronous polishing mechanism, wherein the inner and outer synchronous polishing mechanism comprises a bottom plate, a sliding seat, polishing plates, an inner polishing shaft and an outer polishing shaft, the sliding seat is slidably arranged on the bottom plate, the polishing plates are fixed on the top of the sliding seat, an outer polishing seat and an inner polishing seat are slidably arranged on the polishing plates, the outer polishing seat and the inner polishing seat are provided with degrees of freedom for moving along the vertical direction, the inner polishing shaft and the outer polishing shaft are respectively rotatably arranged on the inner polishing seat and the outer polishing seat, the inner polishing shaft and the outer polishing shaft are respectively connected with an inner polishing head and an outer polishing head, the tool clamping mechanism comprises a supporting table and a clamping frame, the supporting table is positioned between the bottom plate and the clamping frame, a tool disc is rotatably arranged on the clamp