Form measuring instrument
AssigneeMitutoyo Corporation
InventorsSadayuki Matsumiya, Kazuhiko Hidaka
Life of this patent
Estimating the term…
Abstract
A form measuring instrument includes: a body; a movable member including: a stylus holder being rotatably supported by the body; a stylus being held by the stylus holder; and a tip being provided at an end of the stylus and being contactable with a workpiece surface; a measurement-force-applying unit being adapted to generate a rotation force acting on the stylus holder to bring the tip of the stylus into contact with the workpiece surface; a displacement detector being provided to a portion of the stylus holder to detect a displacement of the stylus holder resulting from a rotation thereof; and a vibration generator being adapted to apply vibration to the stylus holder.
Claims12
A form measuring instrument comprising:
- a body;
- a movable member comprising:
- a stylus holder being rotatably supported by the body;
- a stylus being held by the stylus holder;
- and
- a tip being provided at an end of the stylus and being contactable with a workpiece surface;
- a measurement-force-applying unit being adapted to generate a rotation force acting on the stylus holder to bring the tip of the stylus into contact with the workpiece surface;
- a displacement detector being provided to a portion of the stylus holder to detect a displacement of the stylus holder resulting from a rotation thereof;
- and
- a vibration generator being adapted to apply a vibration to the stylus holder,
- wherein the vibration applied by the vibration generator comprises a first vibration that makes the stylus holder move around a turn shaft thereof.
A form measuring instrument comprising:
- a body;
- a movable member comprising:
- a stylus holder being rotatably supported by the body;
- a stylus being held by the stylus holder;
- and
- a tip being provided at an end of the stylus and being contactable with a workpiece surface;
- a measurement-force-applying unit being adapted to generate a rotation force acting on the stylus holder to bring the tip of the stylus into contact with the workpiece surface;
- a displacement detector being provided to a portion of the stylus holder to detect a displacement of the stylus holder resulting from a rotation thereof;
- and
- a vibration generator being adapted to apply a vibration to the stylus holder,
- wherein the vibration generator is adapted to vibrate the stylus holder at a frequency higher than a natural frequency of the movable member, and
- the displacement detector is adapted to output only a frequency component lower than the natural frequency of the movable member taken from a signal representing the displacement detected at the portion of the stylus holder.
A form measuring instrument comprising:
- a body;
- a movable member comprising:
- a stylus holder being rotatably supported around a turn shaft by a surface of the body, a direction of the turn shaft being perpendicular to the surface of the body;
- a stylus being held by the stylus holder;
- and
- a tip being provided at an end of the stylus and being contactable with a workpiece surface;
- a measurement-force-applying unit being adapted to generate a rotation force acting on the stylus holder to bring the tip of the stylus into contact with the workpiece surface;
- a displacement detector being provided to a portion of the stylus holder to detect a displacement of the stylus holder resulting from a rotation thereof;
- and
- a vibration generator being adapted to apply a vibration to the stylus holder.
Dependencies are inferred from the claim text.