Automatic wire connecting apparatus for wire cut electric discharge machine
First Claim
1. An automatic wire connecting apparatus of a wire cut electric discharge machine in which a wire electrode is fed through an upper wire guide arranged above a workpiece and a working fluid supplied to said upper wire guide is sprayed from the upper wire guide to said workpiece, the connecting apparatus comprising:
- rotary driving means actuated by a compressed fluid for rotating a shaft;
a wire processing unit coupled to the rotating shaft for rotation therewith, said wire processing unit being movable independently from said upper wire guide; and
positioning means for selectively positioning said wire processing unit at a wire insertion position or a retracted position;
said wire processing unit having a nozzle hole forming portion, said nozzle hole forming portion having two opposite halves, said two halves defining a slit allowing said wire electrode to pass therethrough when the tow halves are open and defining a nozzle hole capable of fitting with said upper wire guide and of spraying the working fluid when the two halves are closed.
1 Assignment
0 Petitions
Accused Products
Abstract
An automatic wire connecting apparatus of a wire cut electric discharge machine performs automatic connection of a wire electrode smoothly and reliably. A wire processing unit (90) integrally rotatably coupled to a rotating shaft (61) of a pneumatic motor (60) has a nozzle forming portion (12) which defines a slit (S) that allows a wire electrode (W) to pass therethrough when it is opened, and which defines a nozzle hole (125) capable of fitting with an upper wire guide (12) when it is closed, and is selectively positioned at a wire insertion position or an escape position by a rotary stopper (150). When the wire electrode is broken, the wire processing unit is rotated from the escape position to the wire insertion position by a motor, and thereafter, the nozzle hole forming portion is closed, thereby holding the wire electrode guided through the slit during a rotating operation in the nozzle hole. When a working fluid is supplied from the upper wire guide to the nozzle hole, the wire electrode is fed while being restricted by the working fluid sprayed toward a workpiece (P), and is then automatically connected.
12 Citations
11 Claims
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1. An automatic wire connecting apparatus of a wire cut electric discharge machine in which a wire electrode is fed through an upper wire guide arranged above a workpiece and a working fluid supplied to said upper wire guide is sprayed from the upper wire guide to said workpiece, the connecting apparatus comprising:
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rotary driving means actuated by a compressed fluid for rotating a shaft; a wire processing unit coupled to the rotating shaft for rotation therewith, said wire processing unit being movable independently from said upper wire guide; and positioning means for selectively positioning said wire processing unit at a wire insertion position or a retracted position;
said wire processing unit having a nozzle hole forming portion, said nozzle hole forming portion having two opposite halves, said two halves defining a slit allowing said wire electrode to pass therethrough when the tow halves are open and defining a nozzle hole capable of fitting with said upper wire guide and of spraying the working fluid when the two halves are closed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification