Radial press

Abstract

A radial press is provided for the radial deformation of a workpiece centrically to a pressing axis, having two yokes and a pressing tool that comprises a pressing jaw set received in a tool installation space defined between the yokes with pressing jaws arranged concentrically round the pressing axis, wherein both yokes are movable relative to one another by means of a drive system along a drive axis arranged perpendicularly to the pressing axis and the spacing of the pressing jaws from the pressing axis depends on the position of the two yokes relative to one another.

Claims

1. A radial press (1) for the radial deformation of a workpiece centrically to a pressing axis (X), comprising: two yokes (2, 3) having a tool installation space defined therebetween; and a pressing tool (4), the pressing tool comprising a pressing jaw set (5) received in the tool installation space (7) between the yokes (2, 3), wherein the pressing jaw set comprises pressing jaws (6) arranged concentrically around the pressing axis (X), wherein both yokes (2, 3) are movable relative to one another by means of a drive system along a drive axis (A) defined perpendicularly to the pressing axis (X) and a spacing of the pressing jaws (6) of the pressing jaw set from the pressing axis (X) depends on a position of the two yokes (2, 3) relative to one another, characterized in that the two yokes (2, 3) pass through one another outside of the tool installation space (7) at two penetration zones, wherein the drive system comprises two synchronously operating drive units (10) arranged opposite the two penetration zones (D) from the tool installation space and acting on extensions (8, 9) of the two yokes.

2. The radial press of claim 1, wherein the two drive units (10) have operating directions (H) parallel to one another and to the drive axis (A).

3. The radial press of claim 1, wherein each drive unit (10) comprises a plurality of drive elements connected in parallel.

4. The radial press of claim 3, wherein the individual drive elements are arranged mutually adjacent in the direction of the pressing axis (X).

5. The radial press of claim 1, wherein the yokes (2, 3) each comprise a plurality of mutually parallel lamellae (12) that are held, except in the region of the penetration zones (D), arranged at a spacing from one another by means of spacing elements (14).

6. The radial press of claim 5, wherein the lamellae (12) are made from steel sheet of consistent thickness.

7. The radial press of claim 5, wherein the spacing elements (14) are formed by spacing plates (13) the thickness of which is slightly greater than the thickness of the lamellae (12).

8. The radial press of claim 5, wherein clamp-like shoes are provided about the extensions (8, 9) of the yoke, each shoe at least partially encompassing a block formed by the lamellae (12) and the spacing elements (14).

9. The radial press of claim 1, wherein the drive units (10) comprise hydraulic or electrical actuators and mechanical boosters connected downstream thereof.

10. The radial press of claim 1, wherein the drive elements (10) comprise hydraulic cylinders (11) wherein a pressure application to the respective piston working chamber has the effect of a closing of the radial press (1).

11. The radial press of claim 1, wherein the yokes (2, 3) are entirely separable from one another.

12. The radial press of claim 11, wherein the engagement of both the drive units (10) on at least one of the yoke extensions (8, 9) is separable.

13. The radial press of claim 1, wherein linear guides with a movement axis oriented parallel to the drive axis (A) act between the two yokes (2, 3).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention will now be described by reference to a preferred exemplary embodiment illustrated in the drawing.

(2) The FIGURE showsin a perspective viewthe corresponding exemplary embodiment in a partially closed state.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(3) The radial press 1 shown in the drawing and serving for the centric radial deformation of a workpiece (not shown) comprises two yokes, specifically a lower yoke 2 and an upper yoke 3, as well as a pressing tool 4. This tool is conventionally designed in that it comprises a pressing jaw set 5 with pressing jaws 6 arranged concentrically around a pressing axis X, said jaw set being received in a tool installation space 7 defined between the yokes 2, 3. The two yokes 2, 3 are movable relative to one another along a drive axis A disposed perpendicularly to the pressing axis X. Depending on the position of the two yokes 2, 3 relative to one another, the spacing of the pressing jaws 6 from the pressing axis X changes.

(4) On both sides of the tool installation space 7, the two yokes 2, 3 penetrate one another in comb-like manner. Outside the two penetration zones D, therefore, two end-side yoke extensions 8 of the lower yoke 2 lie above the end-side yoke extensions 9 of the upper yoke 3.

(5) The drive system by means of which the two yokes 2, 3 can be moved relative to one another along the drive axis A comprises two synchronously acting drive units 10 in the form of double-acting hydraulic cylinders 11, the respective operating direction H of which is oriented parallel to the drive axis A, said drive units being arranged outside the two penetration zones D and engaging on the two respectively associated yoke extensions 8, 9. An application of pressure on the respective piston-side working chamber (piston working chamber) has the effect of closing the press; in order to open the press, however, pressure is applied to the piston rod-side working chambers (piston rod working chambers).

(6) The two yokes 2, 3 each comprise a plurality of lamellae 12 parallel to one another. With the exception of the penetration zones D, i.e. both in the region of the tool installation space 7 and also in the region of the yoke extensions 8, 9, spacing elements 14 formed by spacing plates 13, by means of which the lamellae 12 are held at a pre-set spacing from one another, are received between the lamellae 12. The lamellae 12 and the spacing plates 13, the thickness of which is slightly greater than the thickness of the lamellae 12, respectively form a block in the region of the tool installation space 7 and in the regions of the two yoke extensions 8, 9, for which purpose they are clamped against one another by means of the bolts 15. In the region of the yoke extensions 8, 9, the blocks formed by the stacked lamellae 12 and spacing plates 13 are encompassed by a clamp-like shoe 16 laterally and at the side facing toward the respective opposite yoke extension, wherein the respective hydraulic cylinder 11 is supported on the two respectively associated shoes 16. The shoes 16 are thus further specifically configured with regard to the connection of the respective hydraulic cylinder 11 (or another drive element).

(7) In order to be able to separate the two yokes 2, 3 completely from one another, according to the above description, a modification of the exemplary embodiment shown would need to be made such that the spacing plates 13 (together with the two hydraulic cylinders 11) provided in the region of the yoke extensions 8, 9 are easily removed. A favorable embodiment in this regard provides that the spacing plates 13 and the respective clamp-like shoe 16 form an integral component into the grooves of which provided between the spacing plates, the lamellae 12 of the relevant yoke 2, 3 are insertable.