Roll grooving apparatus

Details Roll grooving apparatus Roll grooving apparatus

B - Operations, Transporting

21

D

B21D 17/04 (2006.01)

Patent

CA 2393114

The apparatus for roll grooving thin wall pipe (P) comprises a housing (12) supporting a drive roll (20) and an arm (14) pivotally mounted on the housing (12) and supporting a grooving roll (24). A feed screw (100) between the housing (12) and arm (14) provides for pivoting the arm (14) to displace the grooving roll (24) radially toward and away from the drive roll (20), and a release arrangement (50, 152, 154) between the feed screw (100) and arm (14) is operable to release the arm (14) from the screw (100) to protect the screw (100) from damage. The feed screw (100) is mounted on the housing (12) and arm (14) by a doubly pivot arrangement. Self-tracking during a roll grooving operation is provided by dimensionally different knurling on axially opposite sides of the rolling groove (24) of the drive roll (20) and/or by inclining the axis (26) of the grooving roll (24) relative to the axis (20) of the drive roll (20) and/or by tapering the rolling surface (92) on the rolling projection of the grooving roll (24) and/or by supporting the axially outer end of the drive roll (20) against deflection.

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