Yamazaki Machinery Works, Ltd.

Yamazaki Machiner Works, Ltd.

Takayoshi Sakai

Hajime Ohashi

Kiyohisa Mizoguchi

Shinji Sano

Koji Matsumoto

Hideaki Iguchi

Masazumi Hayakawa

A method of determining coordinate system in a machining center in which tool exchange is made after resetting the tool to the mechanical zero point. A reference position is set with respect to a program zero point at a position on a coordinate having the origin coinciding with the program zero point. The mechanical coordinate values of the reference position with respect to the mechanical zero point are computed and determined by making a reference portion of the tool coincide with the reference position. Then, the mechanical coordinate values of the program zero point are computed and determined from the reference position. In the tool exchange, the mechanical coordinate value of the program zero point in the direction of axis of spindle is corrected in accordance with the difference of length between two tools, by reading the data concerning the tool lengths from a tool file storing the tool lengths in the direction of axis of the spindle. According to this method, it is possible to compute and determine the mechanical coordinate values of the program zero point without delay even when the tool is changed in the machining center.

Method of determining coordinate system in machining center

A numerical control machine tool is adapted to operate in accordance with a machining program stored in a memory. The numerical control machine tool is provided with a program amendment command means capable of outputting a program amendment command. When the program amendment command is issued, the operation speeds of the machine tool set in the machining program in the memory are rewritten and amended to the speeds optimum for the instant machining demand. Once this amendment is made, the repetition of the machining cycle for consecutive works can be made at the optimum speeds without requiring speed adjustment for each machining cycle.

Modification of machining program in a numerical control machine tool

A method of controlling the indexing of magazine pockets in a machining center. The tools used in a current machining program are compared with the tools to be employed in the next machining program. When there are tools used in both programs, the pocket numbers of the tools in the present machining program are indexed to the identical tools to be used in the next machining program. The data concerning such common tools are displayed together with the indexed pocket numbers.

Method of controlling indexing of magazine pockets in machining center

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Kagamihara, Japan

Takayoshi Sakai