Apparatus for cutting openings in pipes

Details Apparatus for cutting openings in pipes Apparatus for cutting openings in pipes

1982-12-27

1984-12-18

Briggs, William R.

Cutting

Cutting motion of tool has component in direction of moving...

Plural separately mounted flying cutters

83 54, 83329, 83490, 836475, B26D 508

Patent

active

044884672

ABSTRACT:
An apparatus for cutting openings in pipes of cuttable material, in particular in plastics drainage pipes has at least one cutter head carrying at least one cutter, the cutter head rolling at least in part on the periphery of the pipe and being positively driven for this by means of a planetary gear. By virtue of this, the cutting edge of the cutter moves around the pipe in an epitrochoid. The cutter head is provided with ridges engaging in transverse corrugations in the outer wall of the pipe.
In order to be also able to cut openings in pipes formed at least in part with annular corrugations over their periphery, at least the cutter head is provided with helically extending ridges and the at least one cutter is disposed parallel to these ridges.

REFERENCES:
patent: 3824886 (1974-07-01), Hegler
patent: 3916736 (1975-11-01), Maroschak
patent: 4000672 (1977-01-01), Sitterer et al.
patent: 4218164 (1980-08-01), Lupke et al.
patent: 4219293 (1980-08-01), Licht
patent: 4270878 (1981-06-01), Fales

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