Compound vertical-type milling machine

Abstract

The invention discloses a compound vertical-type milling machine. The compound vertical-type milling machine comprises a base (1), a stand column (2), a main shaft box (3), a main shaft (4), a working bench (5), a saddle (6), a lifting platform (7), a screw-nut pair (8) and a numerical control system. The stand column (2) is fixedly installed on the base (1). The working bench (5) is assembled to a guide rail of the saddle (6) and can carry out traverse reciprocating motion along the saddle. The saddle (6) is assembled to a guide rail of the lifting platform (7) and can carry out vertical reciprocating motion along the lifting platform. The compound vertical-type milling machine is a novel structure compound vertical-type milling machine with high motion rigidity and high rotation rate.

Description

technical field [0001] The invention belongs to the technical field of vertical milling machine structures. Background technique [0002] At present, vertical milling machines are mainly divided into two categories: lifting table vertical milling machines (including rocker arm milling machines) and bed type vertical milling machines. Lift table milling machine such as figure 1 As shown, the workbench E is installed on the guide rail of the sliding saddle C to realize the horizontal (X direction) movement, the sliding saddle C is installed on the guide rail of the lifting platform B to realize the longitudinal (Y direction) movement, and the lifting platform B is on the up and down of the guide rail of the column E Movement (Z-direction movement), but this is not Z-direction work feed movement, its Z-direction work feed movement is realized by the spindle F moving up and down in the headstock G (the headstock cannot move up and down). Its advantages are: the action ...

AI Technical Summary

Problems solved by technology

The disadvantages are: the Z-direction feed stroke of the spindle is short (generally no more than 150mm), poor guiding, insufficient rigidity, unstable processing quality, and difficult to achieve high spindle speed and high-precision machining

The disadvantages are: because the cutting force and reaction force intersect on the mounting surface of the column and the bed, the strength requirements are high, so the size of the bed is large; and because the Y-guided guide rail is on the bed, the bed becomes a large and complex part , heavy weight, high manufacturing and processing costs

In addition, due to the fixed height of the workbench, the best working height cannot be selected, it is inconvenient for workers to operate, and the coordination between man and machine is poor.

Images