Magnetic force sensor assembly for workholding fixtures
First Claim
Patent Images
1. A magnetic force sensor assembly for a workholding fixture comprising:
- a magnetic force switch operatively supported by a base of a component disposed on the workholding fixture, said magnetic force switch including a sensing element disposed above the base of the component and movable relative to the base of the component; and
a sensor operatively supported by the base of the component to sense a position change of said sensing element of said magnetic force switch and inform a controller that there is sufficient magnetic force between the workholding fixture and the base.
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Abstract
A magnetic force sensor assembly for a workholding fixture includes a magnetic force switch operatively supported by a base of a component disposed on the workholding fixture. The magnetic force sensor assembly also includes a sensor operatively supported by the base of the component to sense a position change of the magnetic force switch and inform a controller that there is sufficient magnetic force between the workholding fixture and the base.
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Citations
32 Claims
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1. A magnetic force sensor assembly for a workholding fixture comprising:
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a magnetic force switch operatively supported by a base of a component disposed on the workholding fixture, said magnetic force switch including a sensing element disposed above the base of the component and movable relative to the base of the component; and a sensor operatively supported by the base of the component to sense a position change of said sensing element of said magnetic force switch and inform a controller that there is sufficient magnetic force between the workholding fixture and the base. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 28)
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2. A magnetic force sensor assembly for a workholding fixture comprising:
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a magnetic force switch operatively supported by a base of a component disposed on the workholding fixture; a sensor operatively supported by the base of the component to sense a position change of said magnetic force switch and inform a controller that there is sufficient magnetic force between the workholding fixture and the base; and wherein said magnetic force switch comprises a post at least partially disposed in an instrumentation cavity of the base. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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27. A magnetic force sensor assembly for a workholding fixture comprising:
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a magnetic force switch operatively supported by a base of a component disposed on the workholding fixture; a sensor operatively supported by the base of the component to sense a position change of said magnetic force switch and inform a controller that there is sufficient magnetic force between the workholding fixture and the base; and wherein said sensor is disposed in a recess in a top surface of the base.
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29. A workholding fixture comprising:
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a magnetic chuck; a component disposed on a surface of said magnetic chuck and having a base held by a magnetic field to the surface of said magnetic chuck; a magnetic force switch operatively supported by said base; and a sensor operatively supported by said base to sense a position change of said magnetic force switch and inform a controller that there is sufficient magnetic force between said magnetic chuck and said base.
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30. A magnetic force sensor assembly for a workholding fixture comprising:
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a magnetic force switch operatively supported by a base of a component disposed on the workholding fixture, said magnetic force switch comprising a post at least partially disposed in an instrumentation cavity of the base; said post being made of a non-ferrous material and having a head portion extending radially and a shaft portion extending axially from said head portion, said shaft portion having a threaded end portion threadably engaging a threaded portion of the instrumentation cavity; a sensing plate made of a ferrous material disposed about said shaft portion and movable relative to said shaft portion; a spring disposed about said shaft portion between said sensing plate and a bottom of the instrumentation cavity; and a proximity sensor operatively supported by the base of the component to sense a position change of said magnetic force switch and inform a controller that there is sufficient magnetic force between the workholding fixture and the base.
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31. A magnetic force sensor assembly for a workholding fixture comprising:
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a magnetic force switch operatively supported by a base of a component disposed on the workholding fixture, said magnetic force switch comprising a post at least partially disposed in an instrumentation cavity of the base; said post being made of a non-ferrous material and having a head portion extending radially and a shaft portion extending axially from said head portion, said shaft portion having a cavity extending axially therein; a sleeve made of a non-ferrous material disposed in the instrumentation cavity and about a portion of said shaft portion, said shaft portion being movable relative to said sleeve; a spring at least partially disposed in said cavity between a top of said cavity and a bottom of the instrumentation cavity; a proximity sensor operatively supported by the base of the component to sense a position change of said magnetic force switch and inform a controller that there is sufficient magnetic force between the workholding fixture and the base.
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32. A magnetic force sensor assembly for a workholding fixture comprising:
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a magnetic force switch operatively supported by a base of a component disposed on the workholding fixture, said magnetic force switch comprising a spacer supported by the base, a leaf spring having a first end supported by said spacer and a second end cantilevered over the base, and a contact tip supported by said second end of said spring; a fastener extending through said first end of said spring and said spacer to secure said spring and said spacer to the base; and a proximity sensor operatively supported by the base of the component to sense a position change of said magnetic force switch and inform a controller that there is sufficient magnetic force between the workholding fixture and the base.
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Specification