Tool exchanging apparatus with length of tool comparison

Details Tool exchanging apparatus with length of tool comparison Tool exchanging apparatus with length of tool comparison

1986-08-01

1988-06-21

Smith, Jerry

Boots, shoes, and leggings

29568, B23Q 3155

Patent

active

047528850

ABSTRACT:
A machining center which processes a work piece by exchanging tools housed in a tool magazine with a tool mounted on a main spindle housing by means of the change arm of a change arm unit, which machining center comprises a main spindle housing forward-and-backward drive for moving the main spindle housing in forward and backward directions with respect to the work piece; a unit forward-and-backward drive for moving the change arm unit in the same direction as the direction in which the main spindle housing is moved forward and backward, a storage means for storing the length of the tool mounted on the main spindle housing; a comparing means for comparing the length of the tool mounted on the main spindle housing, read from the storage means, with the length of a tool which is to be mounted on the main spindle housing in exchange for said tool, and for determining which of said tools is longer; a computing means for computing a tool exchange position, in which position, the longer tool is as close to the work piece as practical without interfering with adjacent elements of the machining center at the time of the tool exchange; a first control means for controlling the main spindle housing forward-and rearward driving means so as to retract the main spindle to the tool exchange position after the work piece has been processed; and a second control device for controlling the unit forward-and-backward driving means such that the change arm unit, holding a tool which is to be exchanged with a tool mounted on the main spindle housing, is moved to the tool exchange position.

REFERENCES:
patent: 4430717 (1984-02-01), Senda et al.
patent: 4467517 (1984-08-01), Kurata
patent: 4631981 (1986-12-01), Kato et al.
patent: 4680719 (1987-07-01), Kishi et al.

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