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Chuck for a machine tool for machining a tubular, rotating workpiece

A chuck and workpiece technology, applied in metal processing, tool holder accessories, metal processing equipment, etc.

Inactive Publication Date: 2014-07-09
SMS MEER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in a large diameter and length of the chuck with a correspondingly large mass which is disadvantageous for operation

Method used

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  • Chuck for a machine tool for machining a tubular, rotating workpiece
  • Chuck for a machine tool for machining a tubular, rotating workpiece
  • Chuck for a machine tool for machining a tubular, rotating workpiece

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] Machine tools for cutting threads or threaded joints at the ends of pipe fittings figure 1 The chuck 1 shown in includes a top plate 2 and a rearwardly coupled housing ring (Gehöusering). In order to accommodate the pipe to be machined (not shown), the chuck 1 has a central through hole 4, the center 5 of which coincides with the axis of rotation of the pipe rotating in the chuck. Arranged on the end face of the top plate 2 , evenly distributed over the circumference, are radially adjustable valves with respective clamping jaws 8 a , 8 b , 8 c , which are covered by a cover 6 , with respect to the center or axis of rotation 5 . Three clamping slides 7a, 7b, 7c, jaws 8a, 8b, 8c relative to the center or axis of rotation 5 (see image 3 ) to grip the fitting centrally.

[0017] In order to adjust the clamping slides 7a, 7b, 7c with the jaws 8a, 8b, 8c in the direction towards the center or the axis of rotation 5 of the chuck 1, for each clamping slide 7a, 7b, 7c a tange...

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PUM

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Abstract

The invention relates to a chuck (1) for a machine tool for machining a tubular workpiece which rotates about a rotational axis (4) that coincides with the centre of the chuck, comprising at least two chucking slides (7a, b, c) that are designed to be positionable radially with respect to the rotational axis (4) in order to release and chuck the workpiece, are arranged on the end side of and in a manner distributed uniformly around the circumference of a chuck head plate (2), and bear chucking jaws (8a, b, c). The operating characteristics for the central and / or balancing chucking of a tube are improved when each chucking slide (7a, b, c) is assigned firstly transverse slides (9a, b, c) which are provided tangentially to the rotational axis (4) in the head plate (2), are acted upon by an adjusting means and have a slide block (11) formed as a rack (12) on a longitudinal side, and secondly separate toothed wheels (19a, b, c) which mesh with the racks (12), wherein each chucking slide (7a, b, c) is provided on its underside with a driving claw (17) which, in order to deflect the movement of the transverse slide (9a, b, c) in an adjusting movement, extending at right angles to the rotational axis (4), of the chucking slide (7a, b, c), is in engagement with a slot-like guide groove (16) provided in the slide block (11) of the transverse slide (9a, b, c), and wherein the toothed wheels (19a, b, c) are assigned a coupling pinion (20) that can be engaged and disengaged axially with respect to the rotational axis.

Description

technical field [0001] The invention relates to a chuck for a machine tool for machining tubular workpieces that rotate about an axis of rotation that coincides with the center of the chuck, comprising at least two clamping slides that are radially adjustable relative to the axis of rotation It is designed for releasing and clamping the workpiece, is distributed on the end side on the peripheral surface of the chuck top plate and is arranged evenly distributed on the peripheral surface of the chuck top plate, and carries the clamping jaws. Background technique [0002] A machine tool is known from DE 10 2009 053 679 A1 for machining pipe ends of tubular workpieces rotating about an axis of rotation, in particular for cutting threaded joints. The pipe thread is usually produced by clamping the tubular workpiece or the pipe end of the pipe in one pass through the tool, usually arranged in the turret, wherein the movement of the tool is controlled digitally. For clamping the p...

Claims

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Application Information

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IPC IPC(8): B23B31/16
CPCB23B31/16066B23B2270/025B23B2231/22Y10T279/1906Y10T279/1946Y10T279/1913Y10T279/1921B23B31/16083B23B2231/00
Inventor K-J.埃泽R.德里克斯
Owner SMS MEER
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