Large and heavy numerical control static-pressure revolving platform

A rotary table and static pressure technology, applied in the direction of large fixed members, metal processing machinery parts, metal processing equipment, etc., can solve the problems of reducing processing efficiency and precision, structural rigidity and assembly process affecting dynamic characteristics, etc., to improve efficiency, The effect of improving indexing accuracy and accuracy retention, increasing bearing capacity and dynamic stiffness

Active Publication Date: 2011-05-18
NANJING GONGDA CNC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For powerful cutting, the CNC turntable bears a large impact load, and its structural rigidity and assembly process will affect its dynamic characteristics, reducing processing efficiency and precision

Method used

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  • Large and heavy numerical control static-pressure revolving platform
  • Large and heavy numerical control static-pressure revolving platform
  • Large and heavy numerical control static-pressure revolving platform

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Experimental program
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Embodiment Construction

[0031] Below in conjunction with accompanying drawing, technical content of the present invention is described:

[0032] figure 1It is a schematic diagram of the structure of a large and heavy CNC static pressure rotary table, which mainly includes 6 major parts: the base 4 and the mandrel 1 form the supporting part; The moving coil 8 and the fixed coil 9 of the guide rail form a closed guide rail part; the worm 12 and the worm bracket 11 form the worm part; the circular light ring support 14, the circular light ring 15, the reading head 16 and the reading head support 17 form a circular grating full-closed-loop part; the lock Tight oil cylinder 5, guide sleeve 18 and damping copper block 19 form radial locking parts. The turntable is a floor-standing structure, and the rigidity of the supporting parts is large; the rotary index relies on the static pressure mandrel for precise positioning, the radial runout is 0.01mm, and the rigidity is greater than 0.01mm / t; there is a chi...

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PUM

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Abstract

The invention discloses a large and heavy numerical control static-pressure revolving platform. In the invention, a constant-current static-pressure closed guide rail is used for axial unloading and positioning; a constant-current opposed oil cavity is used for radial positioning; a radial damping oil cylinder is used for locking and applying Coulomb frictional damping; a double-lead worm gear isused for precision scale division; a closed loop control system consists of round gratings; and the revolving platform has high scale division accuracy, repeated location accuracy, heavy load and high rigidity and can realize accurate location at any angles and bear heavy cutting load. The large and heavy numerical control static-pressure revolving platform disclosed in the invention mainly comprises six parts of a supporting part, a scale division rotating part, a closed guide rail part, a worm part, a round grating full closed loop part and a radial locking part. The processing and assembling process of the large and heavy numerical control static-pressure revolving platform can improve the accuracy and the production efficiency of the static-pressure revolving platform, reduce the manufacturing cost and meet the requirement of the industrialization of large high-grate numerical control machine tools in China for large and heavy numerical control static-pressure revolving platforms.

Description

technical field [0001] The invention relates to a large and heavy numerically controlled static pressure rotary table, relates to mechanical manufacturing equipment, and belongs to the field of advanced manufacturing technology. Background technique [0002] In order to economically and quickly meet the demand for high-quality functional parts of domestic large-scale high-end CNC machine tools, especially the demand for large-scale precision CNC gear milling machines, gear hobbing machines, gear grinding machines, and boring and milling machines for CNC rotary tables, the Ministry of Science and Technology listed it in the 2010 The research topic of "Major Special Project of High-end CNC Machine Tools and Basic Manufacturing Equipment" in 2019; with the goal of comprehensively improving the accuracy retention, dynamic performance stability, manufacturing and assembly process, and carrying capacity of large and heavy CNC static pressure rotary tables, improve the matching The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q1/25B23Q1/26B23Q1/38
Inventor 黄筱调洪荣晶于春建方成刚
Owner NANJING GONGDA CNC TECH
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