Title: Tube cutoff apparatus

Abstract: A double-cut tube cutoff machine for severing steel tubing in such a way as to produce minimum deformation of the tube in the severed area. The machine comprises a base carrying opposing die jaws to clamp the tube, and a ram assembly which moves vertically and reciprocally relative to the base. The ram carries a sharp-pointed severing blade which actually cuts the tubing. A first cam arrangement synchronizes the opening and closing of the die jaws to clamp the tube during a transverse slotting operation as well as during the final severing step. A second cam arrangement synchronizes the motion of a cross slide to ram movement to drive a slotting blade transversely across the tube to notch or slot the top wall part way through prior to the severing operation. The slotting blade is carried in a blade holder which receives inserts of varying thickness so slotting blades of conversely varying thickness all pass over the workpiece in the plane of the severing blade.

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Inventors: Borzym, Alexander (Dearborn, MI, US)

Application Number: 426087
Filing Date: 1973-12-19
Publication_date: 1976-02-17
Assignee:
Primary Class(es): 83/385 83/519
Other Classes:
US Patent Ref:

2205389	Jun, 1940	Borzym	83/622.
2250931	Jul, 1941	Grieder	83/385.
2361595	Oct, 1944	Broersma	83/385.
3099182	Jul, 1963	Alverson	83/383.
3129624	Apr, 1964	Auer	83/622.

Other Refs:
Primary Examiner: Abercrombie, Willie G.
Assistant Examiner: Briggs, W. R.
Attorney: Young; Thomas N.