DE3421338A1 - Stored-program automatic handling machine with a bending device - Google Patents

Abstract

To avoid changeover movements of the bending device (3), it has, on both sides of a pivoting axis (2'), axes (12, 13) on which are arranged bending jaws (rollers 5, 6) between which the material to be bent (tube 11) is arranged. The head (1) of the automatic handling machine is moved in such a way that the trace of the pivoting axis (2') extends on the desired bending line. <IMAGE>

Description

Program-controlled handling machine with a bending device

The invention relates to a program-controlled automatic handling device according to the generic term of claim 1.

In the automotive industry, for example, program-controlled automatic handling machines are increasingly being used not only to carry out work, which are unsuitable for humans due to the expenditure of force or inconvenience (e.g. overhead welding). Rather, the tendency also works then, such handling machines for manufacturing processes such as the bending of brake lines, which - if necessary using by hand-operated tools - can also be carried out by reliable workers could. The main advantage of using automatic handling equipment is then in the saving of manufacturing time, the compliance with relatively low tolerances as well as in a production discount.

Important to achieve these advantages without sacrificing degrees of freedom in the machining process is understandably the choice of the movements of the head member carrying the actual tool of the handling machine, of course in connection with the design of the tool.

The invention is based on the object of a handling machine according to the Generic term of claim 1, i.e. with a bending device to train

Board of directors,

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the fact that bending operations without additional relocating movements of the bending device can be made with opposite curvatures. First and foremost, the bending of pipes or lines is intended, for example as Brake lines are to be used in automobiles; is basically the invention The device is also suitable for bending strips or narrow metal sheets.

The solution to this problem according to the invention consists in the characterizing features of claim 1, an advantageous embodiment of the invention is described in the dependent claim.

A major advantage of the invention can be seen in the fact that the transition from a bending curvature or a bending radius to an opposing curvature the bending tool is not removed from the material to be bent, for example a thin tube, pivoted about an axis and then opened again the material needs to be postponed. Such idle movements would be necessary, for example, when constructing the bending device in this way and the composite movement of the head of the automatic handling device would be chosen so that the bending axis at each instant coincides with that through one of the bending jaws defined axis would coincide. Here one would always have to apply the bending device in such a way that this defined axis corresponds to the desired one Pivot axis coincides.

This disadvantageous repositioning of the bending device is primary in the invention thereby avoided that by suitably selected compound movement of the Head of the handling machine with the bending device describes the track of the pivot axis as it were the curved bending line, according to claim - but not necessarily - the axis defined by one of the bending jaws coincides with the center of the bending curvature or with the respective bending axis.

An advantage of the invention can be seen in the fact that even complicated bending lines, e.g. Spirals, are possible.

At this point it should be added that, as a rule, the bending jaws, which are called rollers or Rolls will be executed, will have the same radii. However, this is also not necessary, rather the invention advantageously offers the possibility

ability to use the bends of different curvature differently to achieve curved bending jaws.

The invention is explained below with reference to the drawing, which is of interest here Parts of a program-controlled handling machine, partly in longitudinal section, reproduces.

At 1, the head member of the handling machine is indicated, which by means of further Arms and mounts or the like of the insofar not shown because a known one Structure owning handling machines is kept executing compound movements. The head member 1 is also provided with a drive which serves, the shaft 2 of the generally designated 3 bending device around the Rotate pivot axis 2 '.

Looking now at the bending device in detail, the shaft 2 carries the flange 4, to which the two bending jaws formed by rollers 5 and 6, which in this embodiment have the same diameter, are rotatably attached. The axle journals 7 and 8, which are screwed onto the flange 4, can be seen. The rollers 5 and 6 are provided with circumferential grooves 9 and 10, the radius of which is adapted to the material to be bent, here a thin-walled tube 11.

The two rollers 5 and 6 define axes 12 and 13 which are parallel to the pivot axis 2 'run and lie in a common plane with this.

To perform a bending process along a curved bending line, the Head member 1 of the handling machine is moved so that the track of the pivot axis 2 ' moves on the curved bending line, so follows the desired curvature, while the bending device 3 is pivoted about the pivot axis 2 'so that the by the three axes 2 ', 12 and 13 defined level always below a given one Working angle runs to the bending line. This working angle depends on the distance between rollers 5 and 6.

In this embodiment it is assumed that the distance between the axes 12 and 13 of the pivot axis 2 'is approximately equal to the radius of the bending lines. then there is therefore a pivoting of the flange A depending on the sign of the curvature

the axis 12 or 13, for which the head 1 must perform a compound movement and the shaft 2 of the bending device 3 must perform a pivoting movement about the pivot axis T. The tube 11 is bent around the respective other roller 5 or 6 by the roller 6 or 5.

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Claims (2)

AKIlENGEStLLSCHAFI 3180 Wolfsburg K 3592/1770-hu-sa -β, JynJ PATENT CLAIMS 1. Program-controlled automatic handling machine with a head member set up to carry out composite movements, defining a pivot axis and a bending device held on this, in particular for rod-shaped or tubular material, characterized in that the bending device (3) has two ^{running on both sides of the pivot axis (2 1} ), at least in their each other
facing areas contains curved bending jaws (rollers 5, 6) between
which the material to be bent (11) runs and which run parallel to the pivot axis
(2 ¹ ) and define axes (12,13) running in a plane with this, and that when bending the head member (1) describes such a compound movement that the track of the pivot axis (2 ¹ ) runs on the desired bending line. 2. Automatic handling machine according to claim 1, characterized in that the distances between the axes (12, 13) defined by the bending jaws (5, 6) from the pivot axis (2 ') are selected to be equal to the radii of opposite curvatures of the bending line
and the bending device (3) performs pivoting movements about the axes (12; 13). Chairman ■ - Board of Directors- Ur ι · -: f ■ '' ■ H hai. '.. \ ".: - · ■. ! .-- ·: · ιι' rf.jis: Mjr., ·, ·,; ■, >. ,.;. - _:. -. ... f. -, - ..,.; .. · .. of the Aulsichtsiats: Pf D: leS '..!' ·. ·: f ^1. » U- γ.μ Pe ¹ «·: Γ-ft D '. jr w ^ ticjv ^ i i Η.ϊ: λ · ι- - ον · ► ■ -'wt'- - D ι-- c.-.-- · - ' "'" - "' ■ - ■ ' SiI? Advised Gpsellschatt. WoKsburq Amlsgoiich! Where ^: f £ bJ. · =