Probe head for coordinate measuring apparatus with damping and clamping features
First Claim
1. A probe head for a coordinate measuring apparatus, the probe head comprising:
- a displaceable part;
three measuring systems for measuring the deflections of said displaceable part in three different directions;
a guide system for holding said displaceable part so as to permit said displaceable part to deflect in said different directions;
the guide system including;
a first guide unit for permitting said part to deflect in a first one of said directions;
a second guide unit for permitting said part to deflect in a second one of said directions; and
, a third guide unit for permitting said part to deflect in a third one of said directions;
each one of said guide units including a measuring sensor for measuring the deflection in said one direction corresponding thereto;
each one of said guide units further including;
an electromagnetic force generator for generating a measuring force of predeterminable magnitude and direction;
a clamping device for clamping said displaceable part in said predeterminable direction;
said clamping device including a control circuit for applying a signal to said electromagnetic force generators opposite in direction to the deflection of said displaceable part; and
,an electromagnetic damping device for said displaceable part.
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Accused Products
Abstract
The invention is directed to a probe head of the measuring type equipped with measuring force generators (15 to 17) for the generation of measuring forces of pregiven magnitude and direction. The probe head further includes a system for arresting or clamping the displaceable part 10 of the probe head in preselectable directions. The measuring force generators are arranged directly on the displaceable parts (4, 9, 10) of the guide units for the different deflection directions (x, y, z). The arresting or clamping system is implemented in the form of an electronic control circuit which applies a signal to the force generators (15 to 17) which is opposite to the deflection of the displaceable part 10. In addition, the probe head includes a system for damping the displaceable part. This damping system operates also on an electromagnetic basis with the aid of the measuring force generators configured as plunger coils.
37 Citations
10 Claims
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1. A probe head for a coordinate measuring apparatus, the probe head comprising:
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a displaceable part; three measuring systems for measuring the deflections of said displaceable part in three different directions; a guide system for holding said displaceable part so as to permit said displaceable part to deflect in said different directions; the guide system including;
a first guide unit for permitting said part to deflect in a first one of said directions;
a second guide unit for permitting said part to deflect in a second one of said directions; and
, a third guide unit for permitting said part to deflect in a third one of said directions;each one of said guide units including a measuring sensor for measuring the deflection in said one direction corresponding thereto; each one of said guide units further including;
an electromagnetic force generator for generating a measuring force of predeterminable magnitude and direction;a clamping device for clamping said displaceable part in said predeterminable direction; said clamping device including a control circuit for applying a signal to said electromagnetic force generators opposite in direction to the deflection of said displaceable part; and
,an electromagnetic damping device for said displaceable part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification