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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Name for a mechanism
A sort of slip clutch in a gear train that transmits torque until ther
is a jam. Then at a preset back-torque a "ratchet" mechanism engages making a clicking noise as the drive side turns relatively freely to protect a motor etc and alerts a user to a problem. |
#2
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Name for a mechanism
On Monday, November 20, 2017 at 3:30:40 PM UTC-5, N_Cook wrote:
A sort of slip clutch in a gear train that transmits torque until ther is a jam. Then at a preset back-torque a "ratchet" mechanism engages making a clicking noise as the drive side turns relatively freely to protect a motor etc and alerts a user to a problem. That's how a torque wrench works, but I don't know the name of the mechanism. |
#3
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Name for a mechanism
On Monday, November 20, 2017 at 12:30:40 PM UTC-8, N_Cook wrote:
A sort of slip clutch in a gear train that transmits torque until ther is a jam. Then at a preset back-torque a "ratchet" mechanism engages making a clicking noise ... In my imagination, I see a differential, with one output driving the load, and the other driving a bell, but secured with a brake. Or, a shaft coupling with a shear pin, which makes a fuss when it breaks. Maybe a shear pin with a stinky mercaptan center? |
#4
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Name for a mechanism
N_Cook wrote:
A sort of slip clutch in a gear train that transmits torque until ther is a jam. Then at a preset back-torque a "ratchet" mechanism engages making a clicking noise as the drive side turns relatively freely to protect a motor etc and alerts a user to a problem. Overload clutch? Jon |
#5
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Name for a mechanism
On Mon, 20 Nov 2017 20:30:39 +0000, N_Cook wrote:
A sort of slip clutch in a gear train that transmits torque until ther is a jam. Then at a preset back-torque a "ratchet" mechanism engages making a clicking noise as the drive side turns relatively freely to protect a motor etc and alerts a user to a problem. "Ball detent overload release" is one name for this type of clutch. Eric |
#6
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Name for a mechanism
On Monday, November 20, 2017 at 4:12:20 PM UTC-5, wrote:
"Ball detent overload release" is one name for this type of clutch. Eric http://www.directindustry.com/indust...er-148825.html AKA "Ball Torque Limiter". Peter Wieck Melrose Park, PA |
#7
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Name for a mechanism
On 2017/11/20 12:30 PM, N_Cook wrote:
A sort of slip clutch in a gear train that transmits torque until ther is a jam. Then at a preset back-torque a "ratchet" mechanism engages making a clicking noise as the drive side turns relatively freely to protect a motor etc and alerts a user to a problem. Depending on how much torque you are talking about the ICE bubble hockey arcade games use a nylon slip clutch in their player gearboxes. This releases if the men are jammed and makes a ratcheting sound. They do wear out, but last years and they sell for around $15 for the entire gearbox. https://www.icegame.com/category/22/super-chexx#parts number SC3012X John :-#)# -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 (604)872-5757 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
#8
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Name for a mechanism
On Monday, November 20, 2017 at 2:30:40 PM UTC-6, N_Cook wrote:
A sort of slip clutch in a gear train that transmits torque until ther is a jam. Then at a preset back-torque a "ratchet" mechanism engages making a clicking noise as the drive side turns relatively freely to protect a motor etc and alerts a user to a problem. Over-running clutch? |
#9
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Name for a mechanism
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#10
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Name for a mechanism
On Monday, November 20, 2017 at 10:19:06 PM UTC-5, Jon Elson wrote:
wrote: On Monday, November 20, 2017 at 2:30:40 PM UTC-6, N_Cook wrote: A sort of slip clutch in a gear train that transmits torque until ther is a jam. Then at a preset back-torque a "ratchet" mechanism engages making a clicking noise as the drive side turns relatively freely to protect a motor etc and alerts a user to a problem. Over-running clutch? No, an overrunning clutch allows it to slip in one direction and grab in the other. That is a different mechanism used for a different purpose. Jon Like a bicycle freewheel. |
#11
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Name for a mechanism
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#12
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Name for a mechanism
We used to use this type of clutch in linear actuators in some of our machines, I think we may have called them torque clutches or ratcheting clutches.. The ratcheting noise proved unacceptable to customers. We developed circuitry to detect the stall current of the motor and controlled the actuator travel that way, rather than thru brute force timing.
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