发明名称 |
DISPOSITIVO DI PROTEZIONE PER PARTI DI MACCHINE LONGITUDINALMENTE ESTESE |
摘要 |
The invention is directed to a protective arrangement for a longitudinally extendible machine component such as the measuring arm of a machine such as a coordinate measuring apparatus. The protective arrangement includes a bellows which at least partially surrounds the machine component and has a plurality of structural parts at least one of which is deflectable relative to the longitudinal axis of the machine component in response to a contact of the bellows with an object or person. Each of the structural parts has a cutout formed therein and the parts are disposed in the bellows so as to cause the cutouts to be mutually aligned in the undeflected condition of the bellows. A light barrier directs a light beam through the cutouts which becomes at least partially shaded in response to a deflection of the one structural part. The light barrier generates a signal in response to the shading and this signal is supplied to a protective circuit in the control unit of the machine which can, for example, initiate an emergency stoppage of the machine component thereby preventing damage. |
申请公布号 |
IT8948428(D0) |
申请公布日期 |
1989.10.04 |
申请号 |
IT19890048428 |
申请日期 |
1989.10.04 |
申请人 |
CARL ZEISS |
发明人 |
ABRAMOWSKY HEINZ;MULLER HELMUT;ROTH ROLAND |
分类号 |
B23Q11/00;B23Q11/08;F16D3/14;F16P3/14;G01V8/20 |
主分类号 |
B23Q11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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