TVU-STH Thread Verification Unit

Shown mounted on optional pneumatic linear actuator

Features

  • Together with a separate linear actuator, quickly and automatically checks threaded holes (or external threads) by powering a probe (or ring gage) into and out of the part. GO gaging, NO GO gaging, and combination gaging are all possible.
  • Sensitive high speed drive allows the probe to stop in case of missing or improperly formed threads. This registers a fault, creating a "reject" signal.
  • Will check blind holes accurately for thread depth.
  • Will not jam or stick in undersize (reject) threads. In automated applications, rejects can be separated out without stopping the process.
  • Does not subject the part (or the Spindle) to high force or torque levels.even with a reject.
  • Three basic models fit most applications.
  • Quick to set up and use. Will mount in any orientation.
  • Inspects a wide range of threads, with probe replacement the only changeover. The tool-free probe holder allows for quick change-out of probes.
  • Unit includes matching servodrive, with motion programming. (fig. 1)
  • Weighs 3 kilograms (6.6 lbs).
  • Covered under U.S. Patent 7,059,055.

fig. 1
Capacities
  • Cycle times shown are for threads where the length is equal to the diameter and no Rapid Advance Mechanism is required.
  • Most models available in stock.

 


Model Capability Thread Sizes Max Stroke Cycle Time
TVU-STH-250-SK GO 3-5mm (#4 thru #10) 32mm (1.25 in.) 1.0 sec.
TVU-STH-250-SK-NG GO-NO GO 3-5mm (#4 thru #10) 28mm (1.12 in.) 1.5 sec.
TVU-STH-500-SK GO 6-25mm (1/4" thru 1") 32mm (1.25 in.) 1.6 sec.
TVU-STH-500-SK-NG GO-NO GO 6-25mm (1/4" thru 1") 28mm (1.12 in.) 2.1 sec.
TVU-STH-1000-SK GO 25-50mm (1" thru 2") 32mm (1.25 in.) 2.3 sec.
TVU-STH-1000-SK-NG GO-NO GO 25-50mm (1" thru 2") 28mm (1.12 in.) 2.8 sec.
 
Dimensional Diagram PDF Sample Assembly PDF Sample Electrical Diagram PDF TVU-STH
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