Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1995-11-17
1997-07-22
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
B21B 1906
Patent
active
056494408
ABSTRACT:
A method of calibrating and orienting forming rollers of an Assel-type rolling mill, and more particularly, of calibrating an Assel mill for rolling thin-walled tubes of pre-pierced hollow bodies about a mandrel, using at least three generally conical rollers that are circumferentially spaced about the mandrel. The orientation of each forming roller is adjusted so as to position the roller inclination relative to the mandrel axis of roll by an expansion angle .alpha. of approximately 7.degree. to 30.degree.. Each forming roller is also adjustably oriented so that its smoothing part relative to the mandrel axis of roll defines a transport angle .gamma. of approximately 7.degree. to 17.degree.. In further accordance with this invention, each forming roller is configured so as to have an opening angle .beta. of approximately 4.degree. to 15.degree..
REFERENCES:
patent: 2060768 (1936-11-01), Assel
patent: 3719066 (1973-03-01), Okamoto et al.
Arnautu Gheorghe
Hausler Karl Heinz
Pietsch Jurgen
Voswinckel Gunther
Wengenroth Karl-Helmut
Larson Lowell A.
Mannesmann Aktiengesellschaft
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