A high-speed and large-stroke double-head anticline bed EDM machine tool

Abstract

The invention discloses a high-speed large-stroke double-cow-head back-inclined-tool-body electric discharge machine tool. The high-speed large-stroke double-cow-head back-inclined-tool-body electric discharge machine tool comprises a base, a back-inclined tool body, two saddles, two stretchable sliding bases, two main shaft heads, a first linear motor, a second linear motor, a third linear motor, two first grating rulers, two second grating rulers, a first linear guide rail pair, two second linear guide rail pairs and a ball screw. According to the high-speed large-stroke double-cow-head back-inclined-tool-body electric discharge machine tool, the gravity centers of movement parts such as the saddles and the stretchable sliding bases are moved backwards, it is guaranteed that the gravity centers of the movement parts of the machine tool act on the tool body all the time when the stretchable sliding bases are moved to the limiting positions, the effect of the back-inclined tool body is sufficiently developed by means of the structure, and the capsizing moment generated when the stretchable sliding bases are moved forwards is balanced through powerful attraction force between rotors and stators of the linear motors between the back-inclined tool body and the two sliding bases; meanwhile, independent linear driving of and cooperation control over the two saddles are carried out through the single-stator and double-rotor linear motors, mutual interference of the two saddles in the large-stroke direction can be avoided, and safe running of the saddles is guaranteed.

Description

technical field [0001] The invention is a high-speed and large-travel double-head anticline bed EDM machine tool, which belongs to an innovative technology for the structure and control of a high-speed and large-stroke double-head anticline bed EDM machine. Background technique [0002] The traditional large-stroke double-head EDM machine tool adopts a "C" type horizontal bed structure, which makes the center of gravity of the machine tool move forward, and the cantilever structure of the telescopic sliding seat produces a large overturning moment, which affects the rigidity of the machine tool spindle head in the Z direction, and the telescopic sliding The movement of the seat back and forth easily leads to the displacement of the spindle direction, thus affecting the positional accuracy of the spindle machining direction of the EDM machine tool. [0003] The saddle and the telescopic slide are the key moving parts of the long-stroke double-head EDM machine tool. At present...

AI Technical Summary

Problems solved by technology

The rolling of balls is used to replace the sliding of the screw nut pair, which has the advantages of small friction, high transmission efficiency, elimination of axial clearance, and high positioning accuracy. However, for high-speed and large-stroke machine tools, it is necessary to use large lead and super long rolling screw Nut auxiliary drive, this kind of drive structure has the characteristics of high cost, large moment of inertia, low rigidity, and easy deformation of the screw, which is difficult to meet the requirements of high-speed, high-precision, and large-stroke processing.

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