Stepped multi-main-shaft machine tool

Abstract

The invention provides a stepped multi-main-shaft machine tool which comprises a base, a first main shaft box, a second main shaft box and a tool apron gap bridge. The first main shaft box and the second main shaft box are symmetrically arranged on the left side and the right side of the base, and the tool apron gap bridge is arranged between the first main shaft box and the second main shaft box. The tool apron gap bridge comprises a first mounting surface and a second mounting surface, wherein double tool aprons are arranged on the two sides of the first mounting surface and the two sides of the second mounting surface correspondingly, and the second mounting surface is higher than the first mounting surface. Multiple main shafts which are arranged on the same side in a side-by-side mode are arranged in a stepped mode, the tool aprons corresponding to the main shafts are arranged in a stepped mode, when parts need to be exchanged, only the main shaft boxes need to conduct small-stroke lateral sliding movement, then the two main shaft boxes move oppositely to accomplish butt joint part exchange, and therefore the length of a lead screw is reduced, the equipment size is reduced, and the equipment cost is reduced.

Description

technical field [0001] The invention relates to the field of machine tools, in particular to a stepped multi-spindle machine tool. Background technique [0002] In the machining industry, for shaft workpieces that need to be processed on both sides, the existing processing technology is: after the workpiece is clamped, one end of the workpiece is processed first. After processing, the workpiece must be disassembled and then the workpiece is installed in another direction. Clamp, the tool then processes the other end of the workpiece. When the workpiece is clamped twice, the position of the clamping will have a deviation, which will cause a large error in the machining accuracy at both ends of the workpiece, resulting in a large difference in the concentricity of the two ends of the workpiece, so that the machining accuracy requirements cannot be met, and the processed workpiece is unqualified . The Chinese invention patent with the publication number CN109202138A disclosed...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects in the prior art, the stepped multi-spindle machine tool provided by the present invention solves the problem that in a machine tool with multiple pairs of spindles, when the parts are exchanged for the second surface processing, the spindle box needs to make a large-stroke sideways slide first. In order to avoid the tool plate when the two spindle boxes are docked and replaced, long screw rods need to be used, the equipment is large in size and high in cost.

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