DE2946152A1 - Hemispherical housing spigoted shell prodn. - has preheated tube end shaped in rotating concave die using rolling mandrel - Google Patents

Abstract

The mechanism is intended for producing a hemispherical housing shell with cylindrical spigot end. It comprises a headstock (3), which holds the initially tubular workpiece (5') and an interchangeable hemispherically concave die (27) and a tail- stock (2) which is axially movable towards the headstock either continuously or step-wise. A support (12) is axially and laterally movable relative to the die and carries a shaping tool (26) which may be a rolling mandrel. A further support (19) is preferably provided to carry an inductor (20) for heating the work (5') prior to the shaping operation.

Description

The invention relates to a plant for the production of

Half-shells for spherical housings with a cylindrical attachment.

Ball housings are known to be produced by the manufacture of two halves of the ball, for example by forging, generated and the connecting pieces are after Welding the ball halves together. They are liable to this procedure Welding together resulting disadvantages.

The object of the invention is to create a system with the half-shells for ball housings that do not have the aforementioned disadvantages exhibit.

To solve this problem, a system is proposed according to the invention, as described in the claims.

The spherical housing produced according to the invention has only one central seam, i.e. the ßnbohlußstutzen for the media-carrying pipes go seamlessly into the spherical section of the body about.

In the accompanying drawings, one possible embodiment is a Plant according to the invention and a ball housing shown schematically.

They show: FIG. 1 a system before the deformation with inserted Hollow body, Figure 2 shows a section of the system with the under engagement of the deformation tool molded shell Figure 3 represents one of two elements welded housing of different cross-sectional shapes.

In Figure 1, the headstock (3) is with an exchangeable caliber die (27) provided. The longitudinally and transversely movable support (12) is driven by a Deformation tool (26) equipped. Headstocks are on a guide frame (17) (2) and (3) arranged, wherein the headstock (2) can be moved axially. In the Headstocks (2 and 3) are hollow spindles (4 and 4 ') with clamping devices (not shown) rotatably mounted and encompass an output hollow body (5) (workpiece).

Supports (18 and 19) are provided on the cross bed (1 '). The support (18) carries a cutting device (22) and a deformation tool (21) with a Rolled section (25).

The support (19) is equipped with an inductor (20).

The position (23) indicates the working area.

The support (12) is on the one opposite the deformation tool (26) Side with a mandrel (28) for removing the shaped and cut workpiece Mistake. The tool (21) is used to shape shells whose parting plane is eccentric is applied and is on the rotatable support (18) opposite the separating device (22) arranged.

Mode of operation: The hollow body clamped in the headstocks (2 and 3) (5) is pushed into the working area (23) at the beginning of the processing process, so that the inductor (20) can heat the free end (5 ') of the hollow body (5). Returned to its original position, the deformation now takes place by removing the clamped Hollow body (5) gradually or continuously into the opening of the caliber die (27) is introduced. Caliber die (27) and hollow body (5) are also used set in rotary motion.

The shaping tool (26) is used to produce the in the caliber die (27) entering section of the hollow body (5 ') detected and against the inner contour of the Kalibergesenkes (27) rolled so that a half-shell is formed (see Figure 2).

To form a spherical half-shell (30) (see Figure 3) with a cylindrical Approach (31) it is only necessary to put the starting hollow body (5) into the working space (23) to advance to a desired level. Held by the mandrel (28) divides the separating device (22) removes the workpiece from the initial hollow body (5). Is with one the closed housing requires an eccentric contact of the weld joint (32), the shell (30) can be formed radially using the molding tool (21).

The resulting pre-workpiece for a ball housing is as shown in Figure 3 after mechanical processing and the like Completion welded together in the usual way.

The ball housing produced on a system according to the invention has the advantage that it is made from a pre-tested pipe section. The grain is largely retained by the rolling process.

The finished housing has only one weld seam across its cross-section.

L e r s e i t e

Claims (5)

Plant for the production of half-shells for spherical housings with cylindrical Approach. Claims: 1. Plant for the production of half-shells for spherical housings with a cylindrical attachment, characterized by a) one, the workpiece to be clamped (5 '), as well as an exchangeable, hemispherical one surrounding it at the front end Kalibergesenk (27) receiving fixed headstock (3) and b) a step by step or continuously axially with respect to the fixed headstock (3) movable headstock (2) and. c) one that can be moved longitudinally and transversely with respect to the caliber die (27) and rotatably arranged support (12) with a drivable deformation tool (26) is provided. 2. Plant according to claim 1, characterized in that the deformation tool (26) is designed as a rolling mandrel. 3. Half-shell for the production of spherical housings with a cylindrical Approach, characterized in that it consists of a pre-tested pipe section by rolling against an inner contour of a caliber die while largely preserving the grain is made. 4. Half-shell according to claim 3, characterized in that the cylindrical Approach to the half-shell is formed from the starting material. 5. Half-shell according to claims 3 and 4, characterized in that that paragraphs or projections are rolled into the inside and outside of the half-shell.