Multi-head precise three-dimensional numerical control planer-type milling machine

Abstract

The invention relates to a multi-head precise three-dimensional numerical control planer-type milling machine. The milling machine comprises a base with a shape of a horizontal Chinese character Zhong, a gantry, a vertically moving working platform, a workpiece positioning drive assembly, and a bidirectional precise drive composite head. The base is manufactured by vertically connecting a horizontal-I-shaped base and a square-frame-shaped base. The square-frame-shaped base is arranged above the horizontal-I-shaped base through bolts. The lower end of the horizontal-I-shaped base is connected with the gantry by bolts. Two vertical slide ways are arranged on the upper part of the square-frame-shaped base. A vertical driving screw is arranged between the vertical slide ways. A vertical screw driving motor is connected to an end of the vertical driving screw. Slide blocks are arranged on two sides on the bottom of the vertically moving working platform, and are slidably connected with the vertical slide ways on the upper part of the square-frame-shaped base. A nut is arranged at the middle on the bottom of the vertically moving working platform, and is connected with the middle of the vertical driving screw. The workpiece positioning drive assembly is arranged on the upper part of the vertically moving working platform.

Description

Technical field: [0001] The invention relates to a milling machine, in particular to a multi-head precision three-dimensional numerical control milling machine. Background technique: [0002] In the prior art, the head of the CNC milling machine moves in the direction established by the rectangular three-dimensional coordinate system. In the prior art, there is a servo motor driver in the base of the CNC milling machine, and the servo motor is connected to the gearbox on the machine base. There is a lifting carriage for loading tools, through which the three-dimensional movement of the workpiece and the tool can be realized. The horizontal movement of the CNC milling machine is realized by two horizontal guide rails arranged on the vertical surface of the front side of the gantry frame, that is, the horizontal dragging plate connected with the horizontal rails arranged horizontally and horizontally on the vertical surface of the front side of the gantry frame. There is a v...

AI Technical Summary

Problems solved by technology

The deficiencies in the prior art are 1) the horizontal carriage is connected to the front vertical surface of the gantry through the horizontal guide rails, causing the tool rack connected to the horizontal carriage and the entire weight of the tool to be hooked on the vertical surface of the two horizontal guide rails It is in a suspended state, so that when the tool is working, it will tilt forward and shake, resulting in a decrease in the machining accuracy of the workpiece. The wear of the horizontal guide rail affects the service life and driving accuracy of the horizontal guide rail; 2) The tool holder is connected to the tool holder in a point-like manner through two vertical drag blocks. , it will swing back and forth with the vertical drag block as the axis, which will inevitably reduce the machining accuracy of the workpiece

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