DE102007008825B3 - Hand operated cutting device for treatment of welded joints for relatively high-quality pipe connections in piping, particularly for the space travel area, has cutting tool formed by plunger assigned to welded joint of pipe connection - Google Patents

Abstract

The hand operated cutting device has cutting tool which is formed by a plunger (1) assigned to one of the welded joint of the pipe connection (7) with an integrated hole (4) and boundary layer of the hole forms cutting edges (5). The plunger in a guiding body (2) held in clamped manner by holding elements (3). The welded joint of the pipe connection is held by a corresponding recess (6) of the guiding body (2) as well as is held by an assigned back support (8) in clamped manner.

Description

The The invention relates to a hand-operated cutting device for Processing of welds for relative high-quality pipe connections in piping systems, in particular for the Space area, for contour equalization of welds to check the welded joints by eddy current testing.

It has been shown that for high quality pipe connections by a welded joint one required verification with special requirements of the eddy current testing technique at the seam contour not feasible is. Furthermore, it is to be carried out Equalization of Contour of the weld due to the existing clearance gauge not possible, usual tools as well as a use on a fully integrated piping system must be done.

It is from the DE 22 12 013 A a device for the automatic removal of a Außenstauchgrates butt-welded metal and plastic compounds known. Here, a cutting tool is formed of a plurality of individually or in pairs movable corresponding to the cross section of the welded joint segments, which rest by means of springs or pneumatic pressure devices on the individual surfaces or welded connection.

Further, a peeler with a peeler body for peeling a metal sheath of a plastic pipe after DE 296 12 668 U1 known, which is placed on the end of a pipe.

The The object of the invention is to provide a training of a tool initially mentioned type for placing on a weld create, as a scraping tool a contour equalization of Weld allows.

The solution This object is achieved according to the invention in that a cutting tool by one of the weld the pipe joint associated punch formed with an integrated bore is and the edge zones of the bore forming cutting edges, wherein the Stamp in a guide body on holding elements held clamped and the weld of the pipe joint through a corresponding recording of the guide body recorded and by an associated braced counter bearing is held.

hereby is the tool on a weld bead for processing attachable and rotatable about the tube, the punch with its inner edge By equalizing the contour of the weld evened. The Chips are collecting in the bore of the punch inside the tool, so that a Machining under clean room conditions is guaranteed.

A simple training is that the retaining element of the punch is formed by a spring element.

Further It is suggested that the Hole in the punch for picking chips is trained.

A advantageous arrangement is provided in that the abutment on the Spring element of the punch is clamped simultaneously.

alternative It is suggested that the Guide body for the stamp in a sleeve with a receiving slot for the pipe connection is arranged, in which the counter bearing can be used and over a threaded element is clamped.

Around to ensure a good reception of the pipe connection is provided that the Guide body off a flexible plastic and the corresponding receptacle for the Pipe connection the pipe cross section beyond the diameter includes.

In the drawing are embodiments of Invention shown schematically. Show it:

1 a section through a cutting device with assignment of a punch in a guide body and holding body via a tensioned spring element;

2 a further embodiment in section with an adjustable assignment of the thrust bearing via a threaded element and

3 a plan view according to 2

The cutting device is by a stamp 1 formed in a guide body 2 via a spring element 3 is held clamped as a holding element. Here owns the stamp 1 a hole 4 cutting edges in the peripheral zones 5 forms.

In the guide body 2 is a recording 6 for a pipe connection 7 arranged with weld, wherein the guide body 2 is made of an elastic plastic and the pipe connection 7 corresponding admission 6 about the diameter of the pipe connection 7 extends comprehensively.

In addition, a counter bearing 8th on the inserted pipe connection 7 put on and ver stressed. According to 1 this is the spring element 3 for the clamping of the stamp 1 used that in associated shots of the anvil 8th intervenes.

According to 2 and 3 the overall arrangement is cylindrical, wherein the guide body 2 with the stamp 1 additionally in an outer guide sleeve 9 is arranged and the stamp 1 over the spring element 3 on the guide sleeve 9 is fixed. Furthermore, an anti-twist device 10 between stamps 1 and guide sleeve 9 arranged, which is also the biasing force of the spring element 3 takes as long as the counter bearing is not screwed. The counter bearing 8th gets into the guide sleeve 9 after receiving the pipe connection 7 inserted and by a threaded element 11 braced.

The on the pipe connection 7 patch device is rotated to process the weld several times around the pipe by hand, that the weld over the cutting edges 5 of the stamp 1 with the hole 4 is evened out. The chips fall during machining in the hole 4 and are thus collectively removable.

Claims (6)

Hand-operated cutting device for machining weld seams for relatively high-quality pipe joints in piping systems, in particular for the space sector, for contour equalization of welds to check the welded joints by eddy current testing, characterized in that a cutting tool by one of the weld seam of the pipe joint ( 7 ) associated stamp ( 1 ) with an integrated bore ( 4 ) is formed and the edge zones of the bore ( 4 ) Cutting edges ( 5 ), the stamp ( 1 ) in a guide body ( 2 ) via holding elements ( 3 ) held captive and the weld of the pipe joint ( 7 ) by a corresponding recording ( 6 ) of the guiding body ( 2 ) and by an associated braced counter bearing ( 8th ) is held. Cutting device according to claim 1, characterized in that the retaining element of the punch ( 1 ) by a spring element ( 3 ) is formed. Cutting device according to claim 1 or 2, characterized in that the bore ( 4 ) in the stamp ( 1 ) is designed for chip receiving. Cutting device according to one of claims 1 to 3, characterized in that the abutment ( 8th ) via the spring element ( 3 ) of the stamp ( 1 ) is simultaneously braced. Cutting device according to one of claims 1 to 3, characterized in that the guide body ( 2 ) for the stamp ( 1 ) in a sleeve ( 9 ) with a receiving slot for the pipe connection ( 7 ) is arranged, in which the counter bearing ( 8th ) and via a threaded element ( 11 ) is clamped. Cutting device according to one of claims 1 to 5, characterized in that the guide body ( 2 ) consists of a flexible plastic and the corresponding receptacle ( 6 ) for the pipe connection ( 7 ) comprises the pipe cross section beyond the diameter.