Pipe shaver
First Claim
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1. An apparatus for removing material from the outer surface of an end section of a tubular member having a cylindrical longitudinal passage in said end section comprising:
- a generally cup-shaped body having a longitudinally extended cylindrical side wall with a first end and a second end, a transverse base joined to the first end of the wall, a plurality of lugs joined to the second end of the wall, said side wall, base, and lugs comprising a one-piece cup shaped body, said lugs being circumferentially spaced from each other, each of said lugs being longitudinally away from said second end, each lug having a forward side with an outer end, a recess in the outer end of said forward side, a cutting tool located in each recess connected to each lug for removing material from the outer surface of the end section of the tubular member, each cutting tool comprising a cutting disc having a flat portion in engagement with the forward side of the lugs, a cone shaped outer surface, and an outer circular cutting edge at the large end of said cone shaped outer surface, each disc located in a radial plane extended through the axis of rotation of the apparatus, means securing the discs to the lugs to hold said flat portion thereof in engagement with the forward sides of the lugs and locate a portion of the cutting edge radially inwardly of said lugs, a mandrel having an inner end positioned in engagement with the base, means extended through said base to non-rotatably secure the mandrel to the base, said mandrel having a cylindrical outer surface spaced inwardly from said side wall providing an annular space and a forward end projected longitudinally away from the body, said cylindrical outer surface being of a size to fit into the cylindrical longitudinal passage of the tubular member to guide the apparatus into said end section of the tubular member, said base having an annular stop surface engageable with the tubular member to limit the length of the outer surface of the tubular member from which material is removed, means secured to the mandrel adapted to be connected to means for rotating the apparatus about the longitudinal axis of the mandrel whereby when the mandrel is moved into the passage of the tubular member and rotated with the means for rotating the apparatus whereby the cutting discs remove material from the outer surface of the end section of the tubular member providing a smooth uniform diameter cylindrical surface thereon, and the end section of the tubular member moves into said annular space until the end thereof abuts against the annular stop surface of the base.
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Abstract
A pipe shaver having an elongated mandrel and a plurality of cutting tools is used to shave the outer surface of a predetermined length of a pipe. The mandrel is secured to a cup-shaped body having a plurality of lugs for carrying circular cutting tools. The mandrel and body are separated from each other to provide an annular space for accommodating the shaved end of the pipe. A power unit having an electric motor is used to rotate the shaver.
83 Citations
15 Claims
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1. An apparatus for removing material from the outer surface of an end section of a tubular member having a cylindrical longitudinal passage in said end section comprising:
- a generally cup-shaped body having a longitudinally extended cylindrical side wall with a first end and a second end, a transverse base joined to the first end of the wall, a plurality of lugs joined to the second end of the wall, said side wall, base, and lugs comprising a one-piece cup shaped body, said lugs being circumferentially spaced from each other, each of said lugs being longitudinally away from said second end, each lug having a forward side with an outer end, a recess in the outer end of said forward side, a cutting tool located in each recess connected to each lug for removing material from the outer surface of the end section of the tubular member, each cutting tool comprising a cutting disc having a flat portion in engagement with the forward side of the lugs, a cone shaped outer surface, and an outer circular cutting edge at the large end of said cone shaped outer surface, each disc located in a radial plane extended through the axis of rotation of the apparatus, means securing the discs to the lugs to hold said flat portion thereof in engagement with the forward sides of the lugs and locate a portion of the cutting edge radially inwardly of said lugs, a mandrel having an inner end positioned in engagement with the base, means extended through said base to non-rotatably secure the mandrel to the base, said mandrel having a cylindrical outer surface spaced inwardly from said side wall providing an annular space and a forward end projected longitudinally away from the body, said cylindrical outer surface being of a size to fit into the cylindrical longitudinal passage of the tubular member to guide the apparatus into said end section of the tubular member, said base having an annular stop surface engageable with the tubular member to limit the length of the outer surface of the tubular member from which material is removed, means secured to the mandrel adapted to be connected to means for rotating the apparatus about the longitudinal axis of the mandrel whereby when the mandrel is moved into the passage of the tubular member and rotated with the means for rotating the apparatus whereby the cutting discs remove material from the outer surface of the end section of the tubular member providing a smooth uniform diameter cylindrical surface thereon, and the end section of the tubular member moves into said annular space until the end thereof abuts against the annular stop surface of the base.
- View Dependent Claims (2, 3)
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4. An apparatus for removing material from the outer surface of an end section of a tubular member having a cylindrical longitudinal passage in said end section comprising:
- a body having a longitudinal axis, a first open end, a second closed end and ;
cutting tool disc means connected to the second end of the body for removing material from the outer surface of the tubular member, a mandrel extended into said chamber, means non-rotatably securing the mandrel to the second closed end of the body, said mandrel extended along said longitudinal axis and forming with said body an annular space inwardly of the cutting tool disc means, means connected to the mandrel adapted to be attached to means for rotating the body and mandrel about said longitudinal axis, said cutting tool disc means having an outer circular cutting edge, a portion of said cutting edge extended into said annular space whereby when the apparatus is rotated and the mandrel is moved into the passage of the tubular member whereby the cutting tool disc means shaves material from the outer surface of the end section of the tubular member providing a smooth uniform diameter cylindrical surface thereon and the end section moves into said annular space, said second closed end of the body having stop means adjacent the inner end of said annular space to limit the length of the outer surface of the tubular member from which material is removed. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
- a body having a longitudinal axis, a first open end, a second closed end and ;
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13. An apparatus for removing material from the outer surface of an end section of a tubular member having a cylindrical longitudinal passage in said end section comprising:
- a body having a generally cylindrical side wall, and a base joined to the side wall , said side wall having an inside generally cylindrical surface, a cylindrical mandrel of a size to fit into said passage means , non-rotatably securing the mandrel to said base of the body, said mandrel having an outer cylindrical surface spaced inwardly from the inside cylindrical surface forming an annular space for accommodating the end section of the tubular member, a plurality of lug means secured to said side wall located radially outward of the outer surface of the mandrel, each lug means having a forward surface, cutting tool means mounted on the lug means for shaving material from the outer surface of the end section of the tubular member, and releasable means mounting the cutting tool means on the forward surfaces of the lug means whereby the cutting tool means can be replaced to change the cutting depth thereof, said cutting tool means comprising discs having circular cutting edges, a portion of each cutting edge being located radially inward of the lug means engageable with the end section of the tubular member whereby when said body is rotated and the mandrel is moved into the passage of the tubular member, the cutting edge portion of the cutting tool means shaves material from the outer surface of the end section of the tubular member to provide a smooth uniform diameter cylindrical surface thereon, and the end section moves into said annular space, said base of the body having stop means adjacent the bottom of said annular space to limit the length of the outer surface of the tubular member from which material is shaved.
- View Dependent Claims (14, 15)
Specification