Apparatus for cutting and grooving a pipe

• US 3,985,051 A
• Filed: 11/19/1975
• Issued: 10/12/1976
• Est. Priority Date: 01/07/1974
• Status: Expired due to Term

• Current Assignee: Teledyne Mid-America Corporation
• Original Assignee: Teledyne Mid-America Corporation
• Inventors: Brown, Charles Kepler
• Primary Examiner(s): Simpson, Othell M.
• Assistant Examiner(s): Briggs, W. R.
• Application Number:
  US05/633,295
• Time in Patent Office: 328 Days
• Field of Search: 82/101, 82/100, 82/102, 82/4 C, 29/104, 90/11 C, 90/11 A
• US Class Current: 82/101
• CPC Class Codes: B23B 2260/116 Rollers or rolls
• CPC Class Codes: B23B 5/168 with guiding devices
• CPC Class Codes: B23D 21/00 Machines or devices for shearing or cutting tubes as additional equipment for deep-drawing presses B21D24/16
• CPC Class Codes: B23D 45/124 the workpieces turning about their longitudinal axis during the cutting operations
• CPC Class Codes: B27B 33/20 Edge trimming saw blades or tools combined with means to disintegrate waste
• CPC Class Codes: Y10T 407/1902 Gang
• CPC Class Codes: Y10T 409/306216 Randomly manipulated, work supported, or work following device
• CPC Class Codes: Y10T 82/16967 with means to support and/or rotate work

Abstract

A portable frame supports a mechanism for cutting pipes of various sizes. The pipe can also be grooved or bevelled at the same time. Initially a cutter cuts through a portion of a held, non-rotating pipe. Thereafter the pipe is rotated, or rolled, about its axic to permit the cutter to pass through the remaining portion of the cross section of the pipe to be cut. A single revolution of the pipe accomplishes the cutting thereof. Grooving or bevelling tools can be used simultaneously with the cutter to effect the grooving or bevelling of the pipe.

Claims

1. Apparatus for cutting a pipe into two separate lengths and for simultaneously forming annular grooves of controlled depth in the apposite ends of the lengths into which the pipe is cut, said apparatus comprising:

means supporting a pipe to be cut for rotation about its longitudinal axis;

a tool assembly comprising a shaft rotatable about axes parallel to said longitudinal axis, a cutter blade fixed to said shaft for rotation therewith, grooving blades smaller in diameter than said cutter blade fixed to said shaft for rotation therewith, said grooving blades being on opposite sides of and in spaced relation to said cutter blade, and depth control rollers smaller in diameter than said grooving blades mounted on the shaft on opposite sides of the cutter blade and between said cutter blade and said grooving blades for controlling the depths of the grooves cut by said grooving blades;

means for rotating said tool assembly shaft;

means for then moving the tool assembly toward said pipe supporting means to engage said depth control rollers with the outer surface of a pipe held therein and thereby bring the cutters and grooving blades into cutting and grooving coaction with said pipe; and

means for thereafter rotating the pipe about its longitudinal axis to extend the cut and the annular grooves around the circumference of the pipe, whereby said pipe can be cut in two and said grooves formed in a single pass of the tool assembly around the circumference of the pipe.

2. Apparatus as defined in claim 1 together with a support means for the tool assembly shaft adjacent and on the outboard side of each of said grooving cutters.