Method for installing and maintaining numerical control machine tool split type working table for installing linear motor

Abstract

The invention discloses a method for installing and maintaining a numerical control machine tool split type working table for installing a linear motor. The working table is installed on linear guide rail sliding blocks through four notches in the lateral sides of the working table, a linear motor primary coil is fixedly connected to the bottom face of a motor coil installation plate through screws, and a dovetail groove in the lateral side of the motor coil installation plate is coincident with a dovetail groove of the working table. According to the method, under the condition that the geometric accuracy of a machine tool is not destroyed, work such as disassembling, examining and maintaining can be conveniently carried out on a motor, the maintenance cost is reduced, the maintenance time is shortened, the service life of a working table unit is prolonged, a power line, a signal line, a cooling pipe and a lubricating pipe can be laid from the interior of the working table, and the structure is compact; due to dovetail type contact, attraction force between the linear motor primary coil and a secondary permanent magnetic plate is evenly distributed on the working table, the structural rigidity is good, and deformation is small.

Description

[0001] This application is a divisional application with the application number "201310039851.2", the application date of 2013.2.1, and the name "CNC machine split workbench for linear motor installation". technical field [0002] The invention relates to a method for installing and maintaining a workbench of a numerically controlled machine tool driven by a linear motor. Background technique [0003] Linear motor (linear motor) is a new type of high-performance power transmission device, which eliminates the intermediate link between the motor and the workbench, reduces the transmission chain of the machine tool to zero, and realizes "zero transmission". Compared with the traditional "rotary motor + ball screw" structure, the linear motor direct feed has a simpler structure, better responsiveness, and better stability. It is more and more widely used in the feed system of CNC machine tools. However, the linear motor feed system also has problems such as damage to the primar...

AI Technical Summary

Problems solved by technology

After the workbench has been used for a period of time, it is prone to problems such as water leakage of the workbench. The leakage of cutting fluid to the bottom of the workbench will easily cause corrosion of castings and damage to motor coils.

[0005] Another installation method is to provide threaded holes on the bottom surface of the workbench, and connect the primary coil of the motor to the bottom of the workbench through screws. The coil is directly installed on the bottom of the workbench. The problem is that the gap between the primary coil of the linear motor and the secondary magnetic plate is not easy to adjust, and it is difficult to disassemble and maintain; the patent "A Primary Installation Method for Linear Motor" (CN 101176975A) is to The primary coil is installed on the mounting plate on the bottom of the workbench, and then mounted to the bottom of the workbench with screws. The main idea is to adjust the gap between the primary and secondary of the linear motor by changing the adjustment gasket

This structure is relatively difficult to disassemble and maintain when the motor coil fails. It is necessary to remove the slide block and remove the workbench, which will destroy the adjusted geometric accuracy of the machine tool, and the maintenance cycle is long. Reassembly requires high technical requirements for users. Time-consuming and labor-intensive

[0006] The current form of the workbench of the linear motor feed machine tool has certain shortcomings, and a workbench structure with a light structure, waterproof and dustproof, and easy maintenance is needed

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