tommy bar
A 'tommy bar' is a simple yet essential tool in engineering and machining, used primarily to provide leverage for turning or adjusting machine parts.
🇺🇸 US Voice:
🇬🇧 UK Voice:
Definition
C1Machining
(technical)A metal rod used as a lever to tighten or loosen chucks and tool holders on machine tools like lathes or milling machines.
Example
- He used a tommy bar to secure the chuck on the lathe.
- The tommy bar provided the necessary leverage to adjust the milling machine.
C1General Engineering
(technical)A short bar inserted into a socket spanner to increase torque for tightening or loosening bolts and screws.
Example
- The mechanic inserted the tommy bar into the socket spanner to loosen the stubborn bolt.
- Using a tommy bar can make it easier to apply extra torque when needed.
Similar
Terms that have similar or relatively close meanings to "tommy bar":