Force sensing probe
First Claim
Patent Images
1. A measurement probe, comprising:
- a central axis;
a stylus holder;
a probe body; and
a force transmitting member connecting the holder to the body and extending radially of the central axis, the member having at least one strain sensing element associated therewith for measuring the strain exerted on the member, the probe further comprising a diaphragm in spaced parallel relationship with the member, further connecting the holder to the body.
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Accused Products
Abstract
A measurement probe (10) is disclosed having strain sensing elements (36) mounted on spokes (38) of a strain sensing member (34). The member (34) is disposed in parallel and spaced from a diaphragm (42). Inner portions of the member and diaphragm are connected to a stylus holder (26) and outer portions of the member and diaphragm are connected to probe body (32). The probe can be used to produce a signal when contact force on the stylus (12) is within an adjustable upper and lower limit, and is thereby suited to use with a manually manipulatable coordinate measuring device.
23 Citations
22 Claims
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1. A measurement probe, comprising:
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a central axis;
a stylus holder;
a probe body; and
a force transmitting member connecting the holder to the body and extending radially of the central axis, the member having at least one strain sensing element associated therewith for measuring the strain exerted on the member, the probe further comprising a diaphragm in spaced parallel relationship with the member, further connecting the holder to the body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A measurement probe, comprising:
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a force sensing member;
a housing surrounding the member; and
a cover surrounding at least the portion of the housing that surrounds the member, the cover having a handgrip portion, the housing and the cover being separated. - View Dependent Claims (13, 14)
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- 15. A force sensing probe having a probe body and a workpiece contacting stylus, the probe being connected or connectable to a coordinate determination device, the probe in use sensing contact of the stylus with a workpiece with no significant deflection of the stylus relative to the probe body, the probe comprising a workpiece contact force sensing arrangement during operation having an output having a first state for allowing coordinate determination by the device, and a second state for preventing coordinate determination by the device, wherein the first state occurs when the contact force on the stylus is within a force range having an upper limit and the second state occurs when the contact force is above the upper limit.
Specification