Automatic Lathe, and method for controlling the same and device for controlling the same

Abstract

Amethod for controlling an automatic lathe having at least one main spindle and at least one tool rest comprising the steps of preparing data on movement positions of at least one main spindle and at least one tool rest required by a series of machining programs in one of the two forms one of which is cum reference data for designating the movement positions as a function of the amount of rotation of the cum and the other of which is time reference data for designating the movement positions as a function of the elapsed time, designating the time-series arragement of the cum reference data and the time reference data in the series of machining programs, processing the dum reference data and the time reference data in accordance with the time-series arrangement, and controlling the relative feed in the machining programs of at least one main spindle and at least one tool rest.

Description

[0001] technology area [0002] The invention relates to an automatic lathe and its control method. Background technique [0003] A turning machine that can implement automatic turning (collectively referred to as an automatic lathe in this specification), which makes various tools installed on the tool holder and the rod-shaped or disc-shaped workpiece fixed on the main shaft perform relative feeding action, according to the order and needs Various turning processes can be performed simultaneously and automatically. In recent years, a form of control based on the machining command using the cam reference data that continuously indicates the position of the tool by using the relative feed motion of the workpiece, that is, the spindle, and the tool, that is, the tool holder, as a function of the cam rotation angle (so-called electronic cam type) has been proposed. ) of automatic lathes. [0004] The electronic cam automatic lathe replaces the mechanical cam action of the trad...

AI Technical Summary

Problems solved by technology

On the contrary, depending on the programming method of the machining program and the selection of the value of the input data, the time required for one machining cycle is likely to change. Therefore, in a multi-axis multi-system NC lathe, for example, it is necessary to efficiently program multiple Synchronous commands between control axes or overlapping commands between systems require skilled operators

[0009] In the existing NC lathe, when multiple tools are used to continuously perform different machining processes, usually, after one tool completes the machining process, before the tool reaches the standby position, it is difficult to implement other tools in terms of mechanical structure and control. The processing procedure, so the time required for a processing cycle must include the waiting time of the tool

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