Screw thread cutting machine - has tool support which can be adjusted for height to suit size of workpiece

The invention concerns a thread cutting machine in table execution with mechanical drive for the cutting tool and with a Untergestell.

The supply of pipes, to whose end a thread is to be attached, to a tapping machine, is made as well known by rollers, which are stored in supports also transverse to the Zufahrrichtung of lying axis of rotation. In the interest of an error free cut thread, which permits alone a perfect fitting as well as a careful use of the cutting tool, the pipe which can be worked on must lie horizontal and coaxially with the cutting tool. In order to meet this requirement, the supports, in particular during processing from pipes of different diameter, must be adjustable in the height. It concerns here in nearly all cases the attitude of several supports. Besides the attitude can take place only after personal feeling, so that an exact adjustment of the demanded geometrical situation of the pipe which can be worked on are not managed kann.

The task of the invention is, a simple means for the exact attitude of the position of the pipes which can be worked on at the thread cutting machine anzugeben.

The solution of the task is by the characteristics stated in the characteristic part of the patent claim I gekennzeichnet.

A thread cutting machine with höhenverstellbarem cutting tool makes the attitude of a number of supports in the height redundant. Since the Tragsäule is to be only positioned, the attitude leaves itself also more exact than with don bckannten arrangements vornehmen.

The measures to particularly favourable far training of the invention are article of the dependent Patentansprüche.

The choice of the distances the oh savings alleles of the long sides according to invention planned of a regulating unit from its axis of rotation according to the Anderung of the altitude of the axle that pipe opposite the axle of the cutting tool with the change of the pipe thread diameter after a standard row, which can be worked on in each case, makes a RST surprisingly simple and precise adjustableness necessary in each case for the geometrical situation possible of the pipe concerned for the professional thread cutting. Thus an attitude of the tubing position to the thread cutting process can be switched off due to, geffihlsmässiger estimate mostly incorrect of of them as a subjective source of error. An arrangement of geometry of the regulating unit can take place corresponding to the most common standard sizes of the pipe thread, whatever circumstance simplifies the handling of the pipe material. Finally bezo the possibility stands of inserting according to invention trained a thread cutting machine at any point of a production line with continuous same level there the Bodenabstand of the promotion rollers despite the varying pipe diameter constantly bleibt.

The invention becomes for example on the basis a preferential execution form in accordance with the design erläutert.

Show:

Fig. 1 the side view of a thread cutting machine consisting on average with a mechanism in accordance with the invention, of Tragsäule and regulating unit, arranged in their underframe, for the exact attitude of the elevator position of the Werlczeugtisch including Scbneidwerkzeug in adjustment to the changes of the pipe thread diameter; Fig. 2 the asymmetrical polygon transverse longing CCIT of the regulating unit according to invention; Fig. 3 a cross section by the elevator attitude mechanism along the longing CCIT level A-A in the Fig. 1.

Schematically in the Fig. 1 illustrated thread cutting machine GSM covers a working unit 1, which for its part exists 11 and associated mechanical drive 12 from cutting tool, the working unit 1 basic tool tools 2, the latter taking up Tragsäule 3 and an underframe 4, in which the Tragsäule 3 is höhenverstellbar taken up. The working unit 1 exhibits as well known a tunnel-like axial drilling 13, in those the finished pipes to be further carried können.

The Tragsäule 3 has appropriately the shape of a cylinder, which is partly telescope-like dipped the inside the underframe 4 and there axialrelocatable led. At the part of the cylindrical Tragsäule 3 led in the underframe 4 with their lateral surface more bolted, of the same radially weggeriehteter safety lock pin is 41 intended, which intervenes in, an axial slotted hole 42 trained in the wall of the underframe 4. The safety lock pin 41 led with the Poss sitionieren the Tragsäule 3 with tool table 2 and working unit 1 in the slotted hole 42 and prevents the Tragsäule 3 from rotating around their own axle. Toward their longitudinal axis höhenverstellbare Tragsäule 3 running axle of swivelling regulating unit 5 with an asymmetrical polygon transverse longing CCIT supports itself oh savings alleles with its surface area 31 against a long side 51 around right-angled to the axis of rotation of the cutting tool (vgl.

Fig. 1 and 2) off. The distances The oh savings alleles of the long sides 5! the regulating unit 5 of its axis of rotation (vgl.

ós Fig. 2) are limited after discrete values of a standard row for Gewindedurchmesser at conduits (e.g. Standard row for Gasrohrgewinde). At an end of the wave 52 of the regulating unit 5 a moment arm 6 is fastened, with its assistance the regulating unit in accordance with condition of a scale 7 adjustable ist.

The scale 7 is on the exterior of the Untergeste! Is 4 and surrounds arc-shaped the moment arm 6 basic end of the while 52 of the regulating unit 5. for the turning adjustment of the regulating unit 5 can meanwhile also a mechanical drive (not represented) be arranged. Likewise the underframe 4 can for an easier movableness of the thread cutting machine GSM provided with at least two wheels sein.

It furthermore also a shelf points favourably auf.

The supply of the pipes R to the thread cutting machine GSM, which can be worked on, takes place, as in the Fig. 1 shown, by means of rollers 10, which are stored in supports 8 also transverse to the Zu667 027 fuhrriehtung lying axis of rotation. During the transition of the treatment of pipes R with a given diameter on that of pipes R with a different diameter is the situation of the new pipe R opposite the longing oath tool after the state of the art with the help of a telescope-like adjustment mechanism 9, which must be planned at each support 8 to in-adjust. It might be clear that the available invention an important simplification and acceleration of the positioning of the pipes R with substantially higher accuracy gestattet.

2õ 3õ 5õ s 2 sheets designs 667,027 2 sheets sheet 1 ù, k. _…., ùo r, - QO o i.tT_.

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