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CN-121989103-A - Double-station four-spindle spherical surface machining device and method

CN121989103ACN 121989103 ACN121989103 ACN 121989103ACN-121989103-A

Abstract

A double-station four-spindle spherical surface processing device and method comprises a lathe bed, wherein the lathe bed is divided into a first process area and a second process area according to the process by adopting double-station design, and each process area is provided with 2 spindles and 2 tool towers; according to the application, the mechanical clamp is used for clamping the sphere for processing, so that stable clamping of the sphere can be ensured, a plurality of spheres can be processed simultaneously, the cutter can be quickly replaced for continuous processing after reaching the set processing service life, and the cutter bar of the processing equipment adopts a PSC interface quick loading and unloading structure with adjustable size. The cutter clamping mechanism adopts an eight-cutter-position automatic cutter tower, so that the production efficiency is greatly improved.

Inventors

  • CHEN WENYAN
  • LI MINYI
  • YU WENJIE
  • MU YUXIN
  • ZHOU JINGKAI
  • JIA YUE
  • FAN JI
  • ZHANG FAN

Assignees

  • 中核北方核燃料元件有限公司

Dates

Publication Date
20260508
Application Date
20260212

Claims (10)

  1. 1. The double-station four-spindle spherical surface machining device is characterized by comprising a lathe bed, wherein the lathe bed comprises a first working procedure area and a second working procedure area; An X1-axis servo motor (112) and an X2-axis servo motor (113) are fixed with a lathe bed, then are respectively connected with a first process X1 lead screw (110) and a second process X2 lead screw (109) through a speed reducer, the first process X1 lead screw (110) and the second process X2 lead screw (109) respectively penetrate through a first process vertical column (116) and a second process vertical column (117) and are respectively connected with the first process vertical column (116) and the second process vertical column (117), an X1/X2 guide rail (111) is fixed with the lathe bed, the first process vertical column (116) and the second process vertical column (117) are respectively connected with an X1/X2 guide rail (111) through a slide block, a Z1-axis servo motor (114) and a Z2-axis servo motor (115) are respectively fixed with the first process vertical column (116) and the second process vertical column (117), then are respectively connected with a first process Z1 lead screw (102) and a second process Z2 lead screw (106) through a speed reducer, a first process Z1 (102) and a second process Z2 lead screw (106) respectively penetrate through a first frame (116) and a second frame (118) respectively, a first process Z1 lead screw (102) and a second process Z2 lead screw (118) respectively are respectively connected with a first process vertical column (116) and a second frame (116) respectively, the first working procedure upright post movable frame (118) and the second working procedure upright post movable frame (119) are connected with the first working procedure Z1 guide rail (101) and the second working procedure Z2 guide rail (105) through sliding blocks, the first working procedure cutter tower (103) and the second working procedure electric spindle (107) are respectively fixed with the first working procedure upright post movable frame (118) and the second working procedure upright post movable frame (119), and the first working procedure electric spindle (104) and the second working procedure cutter tower (108) are respectively fixed with the lathe bed.
  2. 2. The double-station four-spindle spherical surface machining device according to claim 1, wherein in the first process area, a Z1 axis servo motor (114) drives a first process Z1 lead screw (102) to rotate, then the first process Z1 lead screw (102) drives a first process cutter tower (103) to vertically move up and down on a first process Z1 guide rail (101), an X1 axis servo motor (112) drives a first process X1 lead screw (110) to rotate, and then the first process X1 lead screw (110) drives a first process upright post (116) to horizontally move left and right on an X1/X2 guide rail (111).
  3. 3. The double-station four-spindle spherical surface machining device according to claim 2, wherein in the second process area, a Z2 shaft servo motor (115) drives a second process Z2 screw (106) to rotate, a second process Z2 screw (106) drives a second process electric spindle (107) to vertically move up and down on a second process Z2 guide rail (105), an X2 shaft servo motor (113) drives a second process X1 screw (109) to rotate, and a second process X1 screw (109) drives a second process upright post (117) to horizontally move left and right on an X1/X2 guide rail (111).
  4. 4. The double-station four-spindle spherical machining device according to claim 1, wherein the first working procedure area further comprises two three-jaw chucks (202), the two three-jaw chucks are connected with chuck oil cylinders (206) through connecting rods, the three-jaw chucks (202) and the chuck oil cylinders (206) are fixedly connected with two ends of the first working procedure electric spindle (104), chuck clamping claws (205) are arranged on the three-jaw chucks (202), first working procedure blank spheres (204) are arranged in the chuck clamping claws (205), a first working procedure cutter bar (201) is fixedly connected with the first working procedure cutter tower (103), and first working procedure upright post anti-collision sensor supports (203) are arranged on the side faces of the first working procedure upright posts (116).
  5. 5. The double-station four-spindle spherical machining device according to claim 4, wherein the second working procedure area further comprises a vacuum adsorption chuck (401), the vacuum adsorption chuck (401) and the second working procedure spindle rotary joint (302) are connected through a compressed air pipeline, the vacuum adsorption chuck (401) and the second working procedure spindle rotary joint (302) are fixedly connected with two ends of the second working procedure electric spindle (107), the second working procedure blank sphere (402) is fixedly arranged in the vacuum adsorption chuck (401) in a clamping mode of vacuum adsorption, the second working procedure cutter bar (303) is fixedly connected with the second working procedure cutter tower (108), and the second working procedure anti-collision sensor bracket (301) is arranged on the side face of the second working procedure upright post (117).
  6. 6. The double-station four-spindle spherical machining device according to claim 5, wherein the first working procedure cutter bar (201) and the second working procedure cutter bar (303) are adjustable cutter bars, the first working procedure cutter bar (201) and the second working procedure cutter bar (303) are identical in structure, the diamond blade (501) and the adjustable cutter bars are fixedly installed, the adjusting fastening bolt (502) is connected into the adjustable cutter bar structure through threads of the adjusting fastening bolt, the cutter point angle adjusting block (503) is fixed below the diamond blade (501), the cutter bar X-direction adjusting screw (504) is assembled inside the adjustable cutter bars, and an adjusting port of the cutter bar X-direction adjusting screw (504) is leaked outside.
  7. 7. The double-station four-spindle spherical machining device according to claim 5, wherein the three-jaw chuck (202) is provided with an airtight detection mechanism (603) and a swinging three-jaw chuck jaw (602), and the swinging three-jaw chuck jaw (602) clamps a workpiece.
  8. 8. The double-station four-spindle spherical surface machining device according to claim 5, wherein the first-procedure column anti-collision sensor support (203) and the second-procedure column anti-collision sensor support (301) are provided with photoelectric sensors.
  9. 9. The double-station four-spindle spherical surface processing method, which is applied to the device of claim 6, is characterized by comprising the following steps: S1, the whole device sends 2 blank spheres with the same size to 2 three-jaw chucks (202) in a first working procedure area through a feeding device, and the three-jaw chucks (202) pull chuck pull rods through chuck oil cylinders (206) to enable chuck jaws (205) to retract inwards to clamp the blank spheres, namely the blank spheres (204) in the first working procedure; S2, a first procedure Z1 lead screw (102) drives a first procedure cutter tower (103), a first procedure X1 lead screw (110) drives a first procedure upright post (116) to finish turning of a first procedure blank sphere (204) through compound movement from top to bottom; S3, the first procedure upright post (116) translates rightwards under the drive of the first procedure X1 screw (110), the second procedure upright post (117) translates rightwards under the drive of the second procedure X1 screw (109) to the upper part of the three-jaw chuck (202), the second procedure Z2 screw (106) drives the vacuum adsorption chuck (401) to descend, the vacuum adsorption chuck (401) adsorbs 2 blank spheres under the negative pressure provided by a vacuum pump connected with the rear end of the second procedure spindle rotary joint (302), the other half surface of the blank spheres is machined, the first procedure three-jaw chuck (202) is loosened after adsorption, and the second procedure blank spheres (402) are transferred from the first procedure three-jaw chuck (202) to the second procedure empty adsorption chuck (401) to finish part switching.
  10. 10. The method for machining the spherical surface with the double stations and the four main shafts according to claim 9, wherein the method further comprises the step S4 of moving the first process upright post (116) and the second process upright post (117) leftwards after the part is switched, simultaneously opening a feeding automatic door of the machining device, and conveying 2 blank spheres (204) with the same size to 2 three-jaw chucks (202) of the first process by the feeding device.

Description

Double-station four-spindle spherical surface machining device and method Technical Field The invention relates to the technical field of high-precision rapid machining, in particular to a double-station four-spindle spherical surface machining device. Background In the automatic extension project of the turning production line, the project is based on the high-temperature gas cooled reactor demonstration line turning process flow, and the precise and rapid machining of the spherical blank is performed by using a multi-station design. Due to the high standard of production, the processing efficiency is required to be improved on the premise that the product is subjected to centering turning on the sphere and the surface of the turned sphere does not generate 1 defect with tangential length more than or equal to 5mm and radial depth more than or equal to 2mm, or 2 defects with tangential length more than or equal to 2mm and radial depth more than or equal to 1 mm. In the high-temperature gas cooled reactor demonstration line turning process flow, the requirements on the surface evenness of the sphere before machining are high, the axial dimension and the radial dimension are high, the first procedure (two procedures are adopted, and half of the sphere is machined in each procedure) of the double-spindle numerical control lathe under the condition that the surface of the sphere is uneven, the suction disc type clamp is easy to generate the phenomenon of air leakage due to insufficient edge tightness, the sphere can fall off in the machining process or lose constraint force in the radial direction in the clamping process, the sphere cannot rotate with the clamp in the machining process, and the phenomenon that the cutter damages the sphere is caused, so that the first procedure of the device adopts a mechanical clamping mode to clamp the sphere. In the high-temperature gas cooled reactor demonstration line turning process flow, the equipment can only process 1 sphere in each processing cycle, the processing time is about 1 minute, and two processing steps are required in each working procedure. Because the new production line is improved in multiple to the processing efficiency requirement, the mechanical structure and the processing technology of the original equipment do not meet the production requirement, and therefore the device is designed to adopt a double-station four-spindle structure, and the processing time is shortened. Meanwhile, the consumption speed of the processing cutter is also accelerated because the processing efficiency is greatly improved, so that the device also needs to have the function of automatic cutter changing so as to reduce the influence of cutter changing and cutter setting work on the processing efficiency. The utility model provides an with above-mentioned analysis for the standing point, designed a first process anchor clamps for machinery to hold, adopt four main shaft structures of duplex position, possess the sphere processingequipment of automatic tool changing function simultaneously, accomplish to improve production efficiency under the spheroidal prerequisite of stable centre gripping. Disclosure of Invention The invention aims to provide a double-station four-spindle spherical surface machining device, which solves the problem that a first procedure clamp in a high-temperature gas cooled reactor demonstration line turning production process has higher requirements on the surface evenness of a ball before machining, and the consistency of the axial dimension and the radial dimension, and remarkably improves the production efficiency. The double-station four-spindle spherical surface machining device comprises a lathe bed, wherein the lathe bed comprises a first working procedure area and a second working procedure area; the X1-axis servo motor, the X2-axis servo motor and the lathe bed are fixed, and are respectively connected with a first process X1 screw and a second process X2 screw through a speed reducer, wherein the first process X1 screw and the second process X2 screw respectively penetrate through a first process upright post and a second process upright post and are respectively connected with the first process upright post and the second process upright post; the X1/X2 guide rail is fixed with the lathe bed, and the first process upright post and the second process upright post are connected with the X1/X2 guide rail through a sliding block; the Z1 axis servo motor and the Z2 axis servo motor are respectively fixed with a first working procedure upright post and a second working procedure upright post, then are respectively connected with a first working procedure Z1 lead screw and a second working procedure Z2 lead screw through a speed reducer, the first working procedure Z1 lead screw and the second working procedure Z2 lead screw respectively penetrate through a first working procedure upright post movable frame and a second working procedure upright p