The model 500 machine is designed to straighten flat or irregularly shaped metal parts – stampings, light forgings, castings – with or without offsets or projections, before or after certain types of heat treatment. It performs at substantially higher production rates than applicable for hand or press straightening and can be run by unskilled operators.

Parts can be out-of-straight in varying amounts and at different locations, and will be brought within uniform straightness tolerance. No measuring before or after is required, other than an occasional quality control check. The straightening action of the machine moves the parts beyond their elastic limits and brings them back to a straight condition. In so doing, the motion also tends to stress relieve the parts so that they retain their straightness.

The model 500 consists of a basic machine, with tooling made for the particular part to be straightened. The head of the machine is actuated by an offset rotary cam which transmits a reciprocal stroke to has inserts. Alternately opposes jaws in fixed positions provide the proper bending moment in ratio with the stroke of the moving jaws. A part is inserted between the jaws and a cycle is started by a foot switch. The part is over bent by a preset amount and returned to the desired straight centreline in one or two seconds.

• Largest work piece length: 406 mm
• Largest work piece thickness: 6 mm
• If the stretch boundary of the material 350 N/mm does not exceed.
• Largest work piece width: 60 mm
• Largest material hardness: Max. 55 HRc

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