Device for checking the position of a spindle in a machine tool
First Claim
1. A device for checking a position of a spindle in a machine tool presenting a structure serving to support the spindle and means for setting the spindle in motion along three axes X, Y, and Z within a predetermined machining zone, comprising:
- a plurality of means, located externally of the machine tool, for emitting electromagnetic signals;
means, installed on the spindle, for receiving electromagnetic signals;
a master control unit connected on an output side to the means for setting the spindle in motion along the axes and incorporating means for processing and transmitting signals indicating the distance between each of the emitting means and the receiving means; and
means for identifying the position of the spindle on the basis of the signals indicating the distances between the emitting and receiving means.
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Accused Products
Abstract
In a machine tool with a spindle capable of motion along at least three axes x, y, and z, the position of the spindle is checked by a device that operates utilizing electromagnetic signals sent out by four emitters, located externally of the machine tool, and picked up by a receiver mounted directly to the spindle. The signals are fed into a master control unit and processed by circuits in such a way as to produce an output that can be used to verify and if necessary correct the position of the spindle on the three axes X, Y, and Z.
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Citations
22 Claims
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1. A device for checking a position of a spindle in a machine tool presenting a structure serving to support the spindle and means for setting the spindle in motion along three axes X, Y, and Z within a predetermined machining zone, comprising:
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a plurality of means, located externally of the machine tool, for emitting electromagnetic signals; means, installed on the spindle, for receiving electromagnetic signals; a master control unit connected on an output side to the means for setting the spindle in motion along the axes and incorporating means for processing and transmitting signals indicating the distance between each of the emitting means and the receiving means; and means for identifying the position of the spindle on the basis of the signals indicating the distances between the emitting and receiving means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A device for checking the position of a spindle in a machine tool presenting a structure serving to support the spindle and means for setting the spindle in motion along three axes X, Y, and Z within a predetermined machining zone, comprising:
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a plurality of means, located externally of the machine tool, for emitting electromagnetic signals; means, installed on the spindle, for receiving electromagnetic signals; a master control unit connected on an output side to the means for setting the spindle in motion along the axes and incorporating means for processing and transmitting signals indicating the distance between each of the emitting means and the receiving means; and means for identifying the position of the spindle on the basis of the signals indicating the distances between the emitting and receiving means; said device being installed in a machine tool of which the predetermined machining zone is occupied by a fixture serving to support a part for machining, wherein the fixture comprises at least one set of receiving means for picking up the electromagnetic signals from the emitting means and connected to means for processing and outputting signals indicating the distance between each of the emitting means and the receiving means.
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22. A device for checking the position of a part to be machined in a machine tool presenting a structure serving to support the spindle and means for setting the spindle in motion along three axes X, Y, and Z within a predetermined machining zone, comprising:
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a plurality of means, located externally of the machine tool, for emitting electromagnetic signals; a fixture serving to support the part for machining, wherein the fixture comprises at least one set of receiving means for picking up the electromagnetic signals from the emitting means and connected to means for processing and outputting signals indicating the distance between each of the emitting means and the receiving means.
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Specification