Tube end abrading tool
First Claim
1. A tubular workpiece end abrading device for selectively abrading an end of a first or a second tubular workpiece, each workpiece being formed substantially about a central workpiece axis and terminating at an end including an internal surface and an external surface having a dimension different than the other workpiece, the device comprising:
- a first abrader head mounting a first female abrasive member for rotation about a first rotary axis to coaxially receive the end of the workpiece with the first female abrasive member in abrasive contact against the external surface of the first workpiece;
a second abrader head mounting a second female abrasive member for receiving the end of the second workpiece with the second female abrasive member in abrasive contact therewith and for rotating the second abrasive member about a second rotary axis and against the external surface of the second workpiece;
a male abrader mounting a male abrasive member for rotation about a male abrader axis and for insertion into at least one of the tubular workpieces to engage the internal surface thereof;
a driver operable to produce rotational driving force about a driver axis angularly offset from the first rotary axis; and
a reducer drive connecting the driver, the first and second abrader heads and male abrader for driven rotation about the first and second rotary axes and the male abrader axis respectively.
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Accused Products
Abstract
A tool for abrading tube ends and fittings is described. The device includes an elongated handle enclosing a battery and driver. A reducer is also supplied at the top end of the handle for tranmitting and reducing rotary velocity of the driver to rotational motion of a pair of abrader heads. The preferred driver is a worm and worm wheel arrangement. The worm wheels are connected to paired, parallel shafts. Forward ends of the shafts mount abrader heads, each including a removable sleeve mounted abrasive member formed in a torus configuration for receiving a tube end. A reamer may be releasably mounted within one or both of the abrader heads to selectively engage and ream the tube end. A male abrader is mountable to the top end of the handle for connection to the driver. It includes a dome shaped abrasive member mounted to a shank for a selective attachment and detachment from the device. The handle and shaft are configured, along with the driver and reducer, to reduce dimensions of the unit and facilitate its use in confined quarters.
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Citations
22 Claims
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1. A tubular workpiece end abrading device for selectively abrading an end of a first or a second tubular workpiece, each workpiece being formed substantially about a central workpiece axis and terminating at an end including an internal surface and an external surface having a dimension different than the other workpiece, the device comprising:
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a first abrader head mounting a first female abrasive member for rotation about a first rotary axis to coaxially receive the end of the workpiece with the first female abrasive member in abrasive contact against the external surface of the first workpiece; a second abrader head mounting a second female abrasive member for receiving the end of the second workpiece with the second female abrasive member in abrasive contact therewith and for rotating the second abrasive member about a second rotary axis and against the external surface of the second workpiece; a male abrader mounting a male abrasive member for rotation about a male abrader axis and for insertion into at least one of the tubular workpieces to engage the internal surface thereof; a driver operable to produce rotational driving force about a driver axis angularly offset from the first rotary axis; and a reducer drive connecting the driver, the first and second abrader heads and male abrader for driven rotation about the first and second rotary axes and the male abrader axis respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A tube end abrading tool for mounting abrasive members to selectively abrade ends of tubular workpieces, having differing diameters formed substantially about central workpiece axes and terminating at ends including interior and external surfaces, the tool comprising:
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a handle extending from a bottom end to a top end; a first abrader head at the top end of the handle, mounting a first female abrasive member for rotation about a first rotary axis substantially transverse to the handle to selectively receive the end of a workpiece of a first diameter with the first female abrasive member in abrasive contact therewith against the external surface of the workpiece; a second abrader head at the top end of the handle, rotatably mounting a second female abrasive member adjacent the first abrader head for selectively receiving the end of a second workpiece of a second diameter with the second female abrasive member in abrasive contact against the external surface of the second workpiece and rotatable about a second rotary axis; a male abrader head at the top end of the handle, rotatably mounting a male abrasive member for insertion into at least one of the tubular workpieces to engage the internal surface thereof; a driver in the handle downwardly of the abrader heads for selective operation to produce rotary driving force about a drive axis substantially perpendicular to the first and second rotary axes; and a reducer drive operably connecting the driver and the abrader heads for transmitting rotary driving force of the driver to rotate the abrader heads. - View Dependent Claims (18, 19, 20, 21)
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22. An abrader head for a tube end abrading tool having a rotary drive, the abrader head comprised of:
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a sleeve member including a forward open end, a rearward end, and an inward surface between the forward and rearward ends formed substantially about a central axis; a mounting device on the rearward end of the sleeve member for attachment to the abrading tool; the mounting device including a surface selectively engageable with the rotary drive of the tool to transmit rotary motion of the drive to the sleeve member; and an abrasive member in the sleeve member, attached to the inward surface for abrasive contact with a tube end and for abrading the tube end responsive to rotary motion of the sleeve member about the central axis; wherein the abrasive member is comprised of a resilient abrasive pad formed into a torroidal configuration and supported on an internal surface of the sleeve member; and wherein the sleeve member includes an axially rearward projecting flange at the forward open end thereof and wherein one of the abrasive member ends is axially overlapped and clamped by the flange to the inward surface of the sleeve member.
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Specification