Fanuc Corporation

Hitoshi Aramaki

Hitoshi Matsuura

Tetsuji Okamoto

Hajimu Kishi

Mitsuo Matsui

Osamu Nakajima

Disclosed is a digitizing method of sensing an amount of displacement of each axis applied to a stylus by a tracer head, profiling a model surface while controlling the stylus in such a manner that the amount of displacement is made equal to a reference amount of displacement, sequentially fetching positional data by a predetermined method, and outputting NC data, wherein a difference between the amount of displacement and the reference amount of displacement is monitored, and the difference is added to the positional data and a specific positional data obtained when the difference exceeds a predetermined value is output. Although the amount of displacement of each axis is controlled to be equal to the reference amount of displacement when a gently inclined configuration is profiled, at the moment when a corner is reached, a phenomenon that the stylus is spaced apart from a model arises so that the difference between the amount of displacement and the reference amount of displacement is increased. This change is sensed and regarded to exhibit the corner, and thus the difference is added to the output point obtained by a usual digitizing and the positional data at a point is output.

Digitizing method

Trace control method

Tracing control system

Rotating body tracing control apparatus

Tracer control apparatus

There are provided a tracing control apparatus (1), a numerical control apparatus (2), and switching circuits (3X, 3Y, 3Z) for switching and transmitting selectively control instructions from the tracing control apparatus (1) and the numerical control apparatus (2), to a three-axis driving means for the tracer controlled machining (4) and a three-axis driving means for the numerically controlled machining (5) in accordance with selection signals. A numerically controlled machining and tracer controlled machining selection signal (S.sub.C) is used as one of the selection signals besides a tracer controlled machining selection signal (S.sub.A) and a numerically controlled machining selection signal (S.sub.B). When the numerically controlled machining and tracer controlled machining selection signal (S.sub.C) is selected, the three-axis driving means for the tracer controlled machining (4) is controlled by the tracing control apparatus (1), and the three-axis driving means for the numerically controlled machining (5) is controlled by the numerical control apparatus (2), independently. As a result, it is possible to perform the preparation for the tracer controlled machining or the conversion of the tracer controlled machining data into digital information, simultaneously, with the numerically controlled machining.

Machine tool for tracer controlled machinery and numerical controlled

Growing community of inventors

Hino, Japan

Hitoshi Aramaki