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Fiber optic/photon detector for brazing machine

  • US 4,079,225 A
  • Filed: 08/04/1976
  • Issued: 03/14/1978
  • Est. Priority Date: 08/04/1976
  • Status: Expired due to Term
First Claim
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1. Apparatus for controlling the quality of a joint between an armature wire and a commutator bar which comprises means for heating said armature wire and said commutator bar at the point where they are to be joined, means for bringing said armature wire and commutator bar into contact with said heating means so as to form said joint, fiber optic means for collecting radiant energy emitted from a point relative to said joint and displaced from said heating means as said joint is being heated, said fiber optic means including illumination means for emitting light, a bifurcated fiber optic assembly having a first path and a second path, said first path for collecting said radiant energy and said second path for directing said light emitted by said illumination means onto said point relative to said joint so as to aid in aiming said fiber optic means, and a lens system for concentrating said light on said point and for limiting collection of radiant energy to that energy emitted from said point, means for converting said radiant energy into a usable electronic signal representative of the temperature of said joint, means for terminating operation of said heating means, and means for actuating said terminating means, said actuating means being operative in response to said electronic signal when said temperature at said joint reaches a predetermined temperature.

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