Cutting – Tool engages work during dwell of intermittent workfeed – Work advance occurs during return stroke of tool
Patent
1997-07-07
1998-08-25
Jones, Eugenia
Cutting
Tool engages work during dwell of intermittent workfeed
Work advance occurs during return stroke of tool
83267, 834117, 83733, 474 84, 474153, 474205, 474903, B26D 520, F16H 702
Patent
active
057973067
ABSTRACT:
A lamination notching apparatus for forming dynamoelectric core laminations with winding slots includes a sprocket and drive belt system connecting an indexer to the drive table shaft of a lamination table. The indexer is driven from a punch drive and has an output sprocket. A coupling unit has a first sprocket and a second sprocket mounted on a common same shaft and connected by a passive clamp unit to produce a one-to-one rotation. Drive belts connect the indexer sprocket to the first sprocket and the second sprocket to the drive sprocket table shaft. The sprockets are formed with a special tooth profile to eliminate tooth-to-belt clearance and backlash with a standard HTD profile belt for precise rotary motion. The indexer is movably mounted for tension adjustment of the drive belt. The passive clamp unit includes telescoped tapered sprocket hubs on a tubular shaft, with a spring-loaded clamp nut and bolt passing therethrough. An air cylinder is coupled to the bolt to release the resilient clamp of the sprockets for separation of the bolt unit for changing the sprockets and for phase orientation of the sprockets with the table drive in a reference position.
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Jones Eugenia
Marathon Electric Mfg. Corp.
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