DE2032306A1 - Process for the non-cutting machining of the edges of cylindrical sheet metal rings and device for carrying out the process - Google Patents

Description

Berlin, d.- 25.6 .. 1970 patent attorneys 2032306

Patent attorneys

KRONPR I N Z Aktiengesellschaft Dipl.-Ing. W. Meissner

565 Solingen-Ohligs, Weyerstr. 112/114 Dipl.-Ing, H. Tischer

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"Process for the non-cutting machining of the edges of cylindrical sheet metal rings and devices to carry out the procedure "

The invention relates to a method for non-cutting machining, in particular for rounding the edges of cylindrical sheet metal rings, which are rounded and welded, for example, from cut sheet metal strips as well as a device for performing the method for processing the edges of cylindrical Biechringe with Machining rollers that are mounted on a rotatable face plate.

In a known method for separating pipes into sections, whose ends are profiled and a device for performing this method has already been proposed for editing of the pipe ends used profiling rollers rotatably a rotatable disc mounted in a housing. This disc is set in revolutions by a gear when the profiling of a pipe end and the pipe end pressed against the profiling rollers mounted on the disc (German see Patent specification. If with this device sheet metal rings should be processed, one side of the sheet metal ring would have to be clamped in order to process the other side. Afterward the sheet metal ring must be unclamped and on the machined side be clamped again so that both sides of the sheet metal ring are machined can be. The tightening of a thin sheet metal ring is particularly difficult because the ring must not be deformed, on the other hand, however, the restraint is the whole, through the machining must absorb resulting forces. This working method is to

109847/0707

agile and too cumbersome and especially unsuitable for mass production.

The object of the invention is to propose a method for the non-cutting machining of the edges of cylindrical sheet metal rings that can be carried out in a simple manner and is suitable for mass production · The object is achieved in that a sheet metal ring of both Pages is machined in opposite directions at the same time · The. - Tools running on a circular path can have a Process the sheet metal ring in alternating sequence in that two "or more pressure rollers are arranged in between, pretensioned roller pairs are brought into engagement. It is advantageous to let a sheet metal ring fall into the machining position from above. There are two opposite jaws opened by a swivel movement at the top. After a sheet metal ring has fallen into the machining position, the enclose Bake the sheet metal ring partially through, a pivoting movement, whereby the sheet metal ring is clamped centrally at the same time. To the machining of a sheet metal ring, this is released downwards by the fact that the jaws have an opposing swivel and perform a rotary movement ·,. - ■■

Only through the method according to the invention is it possible to with mass production of thin sheet metal rings on the edges in faster Process sequence without the sheet metal rings being deformed by the clamping during processing. As a result of that If the machining tools rotate in opposite directions, the machining forces are also directed in opposite directions and rise therefore theoretically · Only minor differences when attacking of the tools on the edges of a sheet metal ring result in small unbalanced forces caused by the guide and clamping jaws be included. This means that the jaws only need to apply a little force to hold a sheet metal ring in place, so that it is practically not deformed in the process.

109887/0707

To carry out the procedure for machining the edges of cylindrical sheet metal rings is a device with processing rollers proposed, which are mounted on a rotatable face plate. According to the invention, one thing is true on both sides machined sheet metal ring each arranged a rotatable face plate, the two face plates can be driven in opposite directions. To the Adaptation of the tools to the cylindrical sheet metal rings, it is advantageous to to store one of the two tool carriers in a tumbling motion · Different machining tools can be placed on each faceplate be stored in an alternating sequence. For example, there are two or more V-shaped pressure rollers and alternating between them two or more pairs of rollers preloaded against each other rotatably mounted on a faceplate.

To compensate for any out-of-roundness on the parts to be machined Sheet metal rings, the storage of the processing rollers is advantageous designed to be resilient radially to the sheet metal ring. The processing of the edges of the sheet metal rings can thus be carried out in different stages that the V-shaped pressure rollers mounted on each faceplate are profiled differently on the machining surface are.

To guide and clamp a sheet metal ring between the tool carriers, two opposing jaws can be pivotably and rotatably mounted, the jaws being narrower than a ring to be machined. The collapse of a sheet metal ring into the machining position can be achieved in that the jaws are opened by a simple pivoting movement at the top by 15, for example. In the processing after the pivoting back of the jaws is then enclosed a sheet-metal ring and partially tightened in order and at the same time centered.

The implementation of the method as well as a device executing the method, for example, is explained in more detail below with reference to the accompanying drawings:

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From the figures show schematically:

Fig. 1 a device z. T. in section along line I - I of Fig. 2 with the view onto a sheet metal ring from the side

Fig. 2 the device in side view.

The device essentially consists of a machine bed 1, bearing and drive units 2, 3 "attached to shaft stubs 4, 5" Face plates 6, 7 on which machining tools 8, 9 »10, 11 are rotatably mounted and jaws 12, 13 with swiveling device« lines l4, 15, l6, 17. A feed device l8, 19 for sheet metal rings 20 is attached above the processing device.

The method according to the invention is carried out in the following manner

After taking back the locking pin, a sheet metal ring 20 falls from the feed channel l8 into the jaws 12, 13 located underneath, which for this purpose are opened by a pivoting movement around the bearing eye l6 a on the bearing block l6 at the top. After a sheet metal ring 20 between the Jaws 12, 13 is, the jaws are pivoted back so that the sheet metal ring 20 is partially enclosed and clamped centrally will. The bearing and drive units 2, 3 are then moved against the sheet metal ring 20 until the machining tools engage come, both face plates 6, 7 are driven, namely in the opposite direction. Now the method for the non-cutting machining of the edges of a sheet metal ring according to the invention continues in that a sheet-metal ring 20 is connected from both sides at the same time with tools 8, 9 »10, 11 running in opposite directions of rotation is processed. Here, the edges 21 of a sheet metal ring are arranged with two or more pressure rollers 9 »10 and with each one in between Roller pairs 8, 11 processed in an alternating sequence. The pressure rollers 9 | 10 are axially displaceable in their storage, so that they are in non-round places during the machining process

109887/07 07

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Edges 21 can adapt immediately. Through different profiling of the machining surfaces of the alternately arranged pressure rollers 10, the edges 21 can be deformed more intensely will.

The roller pairs 8 press on from both sides in this way the edges 21 that at the transition from the edge 21 to the cylindrical surface of the sheet metal ring 20 no degree arise can. The rollers 8a, b are mounted pivotably about pins 8e by means of bearing arms 8f and are set against one another by springs 8c, d printed. Due to this design, the roller pairs can also adapt to non-round places on the edges 21. ·

The processing time of the edges 21 of a sheet metal ring 20 can are shortened by the fact that the pressure of the tools 8, 9 »10, 11 is increased on the edges 21 and that several similar Tools 8, 11 or 9, 10 are alternately attached to the face plates 6. This can achieve that the edges 21 of a sheet metal ring 20 after a few revolutions of the face plates 6j 7 are finished.

After the edges 21 have been processed, the bearing and drive units 2, 3 with the face plates 6, 7 move into the starting position " return. The jaws 12, 13 give the sheet metal ring through a swivel and turning movement downwards freely ^ After the jaws are swiveled back and have been opened at the top, the process for machining a sheet metal ring can start again from the beginning.

- patent claims -

109887/070 7

Claims (1)

354 PATENT CLAIMS 1 · Process for non-cutting machining «insbpjor.i'orc« .'- ura Rounding the edges of cylindrical sheet metal rings, for example made from cut strips of bishops rounded and welded ground, characterized in that a sheet metal ring from both sides at the same time in opposite directions Direction of rotation is processed. 2 · The method according to claim 1, characterized in that two or more pressure rollers with each in between arranged, prestressed roller pairs process the edges of a sheet metal ring in alternating sequence. 3 · Method according to claims 1 and 2, characterized! that two opposing jaws before the collapse of a sheet metal ring in the processing position can be opened by a swivel movement at the top. 4 »Method according to one of the preceding claims, characterized characterized in that the jaws after the collapse of a sheet metal ring in the machining position by a Swivel movement partially enclose a sheet metal ring and clamp it centrally. 5. Method according to one of the preceding claims, characterized in that the jaws are and rotary movement release a machined sheet metal ring downwards. 6. Device for performing the method according to the preceding Claims for machining the edges of cylindrical Sheet metal rings with processing rollers that are attached to a 109887/0707 " ² " ■. '■ ■■. ";. · BAD ORSGJNAL rotatable faceplate are mounted, characterized in that that on both sides of a sheet metal ring to be machined (20) each have a rotatable face plate. (6, 7) is arranged, wherein the two face plates can be driven in opposite directions. 7 «Device according to claim 6, characterized in that that one of the two face plates (6 or 7) is mounted wobbling. 8. Apparatus according to claim 6, characterized in that on each faceplate (6, 7) different machining tools (8, 9 »10, ¹ Il) are mounted in alternating sequence. 9 · Device according to one of the preceding claims, characterized characterized in that on a faceplate (6, 7) as processing tools two or more V-shaped pressure rollers (9, 10) and alternately in between against each other prestressed roller pairs (8, 11) are arranged. 10. Device according to one of the preceding claims, characterized in that the bearing arms (8f) through Springs (8c, d) rollers (8a, b) pretensioned against one another are pivotably mounted on a common pin (8o). 11. Device according to one of the preceding claims, characterized characterized in that the bearing of the machining tools (8, 9, 10, 11) is resilient radially to the sheet metal ring (20) is trained. ' 12. Device according to one of the preceding claims, characterized characterized in that the V-shaped Brückrollefe, 10) mounted on each faceplate (6-t 7) on the Processing surface are profiled differently. T09887 / G7Q7 V.) . Device according to one of the preceding claims, characterized in that two oppositely arranged jaws (12, 13) are pivotably and rotatably mounted between the face plates (6, 7), the jaws being narrower than a ring (20) to be machined. l4. Device according to one of the preceding claims, characterized in that the jaws Ü.2, 13) in front the collapse of a sheet metal ring (20) are opened by about 15. 15 device according to one of the preceding claims, characterized in that a sheet metal ring (20) is partially enclosed during processing by the jaws (12, 13) is ο L e r s e i t e