Machine for beveling
First Claim
1. An apparatus for machining the periphery of an electrically nonconductive workpiece, comprising:
- a grinding wheel with an electrically conductive grinding surface,means for holding either said workpiece or, an electrically conductive test piece having a predetermined bevel,moving means for changing the relative distance between said holding means and said wheel,touch sensor means for generating a touch signal when the bevel of said test piece held by said holding means electrically contacts the grinding surface of said wheel, andcontrol means coupled to said touch sensor means and to said moving means, for detecting, when said touch signal is generated, machining end position data (N1) corresponding to the relative distance between said holding means and said wheel, and for actuating, when said workpiece is held by said holding means, said moving means according to said machining end position data (N1), so that machining of the periphery of said workpiece is effected.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for machining the periphery of a work is provided with a grinding wheel, a holding mechanism for holding the work, and a moving mechanism for moving the holding mechanism toward or away from the wheel. A touch sensor for detecting the contact between a grinding surface of the wheel and a test piece held by the holding mechanism is connected to the wheel and the holding mechanism. The forward or backward movement of the moving mechanism is numerically controlled by a sequence controller using a microcomputer. Data representing the position of the holding mechanism when the touch sensor detects the contact between the grinding surface of the wheel and the test piece is stored in an internal memory of the controller as machining end position data (N1). The memory also prestores machining amount data (N2) and total stroke data (N2+N3). In accordance with the machining end position data (N1), the machining amount data (N2) and the total stroke data (N2+N3), the controller moves the holding mechanism with the work in place of the test piece.
26 Citations
13 Claims
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1. An apparatus for machining the periphery of an electrically nonconductive workpiece, comprising:
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a grinding wheel with an electrically conductive grinding surface, means for holding either said workpiece or, an electrically conductive test piece having a predetermined bevel, moving means for changing the relative distance between said holding means and said wheel, touch sensor means for generating a touch signal when the bevel of said test piece held by said holding means electrically contacts the grinding surface of said wheel, and control means coupled to said touch sensor means and to said moving means, for detecting, when said touch signal is generated, machining end position data (N1) corresponding to the relative distance between said holding means and said wheel, and for actuating, when said workpiece is held by said holding means, said moving means according to said machining end position data (N1), so that machining of the periphery of said workpiece is effected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification