Other

Eberhard Brucher

Werner Schneider

Albrecht Baumer

Hans-Jorg Muller-Spath

In order to obviate the need for exchanging tools, e.g. tongs, together with their drive mechanisms, the quick-action coupling device (4) is provided between a toolholder (3) and the tool (5) and consists essentially of two coupling half shells (9, 10), one of which is fixedly mounted on a rotary spindle (7) supported in the toolholder (3) and drivable if required, and the other of which is fixedly arranged at the toolhead (11); these half shells are radially coupled and then locked. The locking device (21) is designed so that, in the unlocked condition, the rotary drive mechanism (6) of the rotary spindle (7) is blocked. The quick-action coupling device (4) also permits a linear drive action (8, 19) for opening and closing tongs (5a, 5b) or the like, and is capable of transmitting high bending moments and/or torques with simultaneously high transverse and longitudinal forces.

Quick-action coupling for forge and conveyor manipulators

Mechanically operated collet chuck for gripping round objects. Especially in automatic, program-controlled installations for the successive machining of round workpieces, a centered gripping of the round objects, which are changing in diameter, is important. The centering error occurring in case of a collet-carrying machine which remains stationary is compensated for by means of link quadrilaterals (3, 8, 10, 12) which latter cause collet jaws (9) pivotably mounted to the front ends of the collet arms (4) and forming four contact points to pivot with respect to the collet arms (4) in such a way that the contact points or contact lines come into contact with the round object (1) simultaneously, without a change in position of the machine or of the round object. The special structure of the collet chuck simplifies program control of the machining unit since the change in diameter undergone by the round object (1) is taken into account in a rugged and purely mechanical fashion by the collet which occupies only a small amount of space.

Mechanically operated collet chuck for gripping round objects

A housing of the grasping device is connected by way of a headpiece with a taphole drilling machine equipped with a counterblow hammer. A clamping mechanism which can be coupled in a force-locking fashion in the housing of the grasping device with the smooth-round end of the tapping rod by means of an operating device is provided, this mechanism being in operative connection with an installation enhancing the clamping force upon an increase in tensile force at the tapping rod. The clamping mechanism can be, for example, a tilting disk surrounding the smooth-round end of the tapping rod with a bore and being in operative connection on one side with a stop fixedly connected to the housing of the grasping device, this stop converting the tensile force at the tapping rod into a tilting moment at the tilting disk so that the clamping force is enhanced.

Grasping device for a rod insertable into and withdrawable from the

A carrier that is adjustably interconnected with its base by means of parallelogram articulation including spherical bearings. The framework interconnecting the support with its base, includes two generally horizontal arms laterally spaced apart and interconnected at their forward ends with the support by spherical bearings and at their rear end to a hinge plate about spaced vertical pivots. The hinge plate is mounted for vertical swinging movement about a horizontal axis on and relative to the base. Another parallelogram linkage, this one arranged in a vertical plane, is provided by a fluid pressure cylinder disposed below the horizontal arms and serving as a tilting cylinder, which is connected by spherical bearings at its forward and rear ends to the carrier and to the base, respectively. A fluid pressure cylinder serving as a lifting cylinder pivotally interconnects the base and the lower part of the hinge plate. A swivel cylinder for swinging the parallelogram linkage in a horizontal direction, is disposed in the space between the horizontal arms and pivotally interconnects one of those arms with the hinge plate and is disposed at an acute angle to both of the horizontal arms. This swivel cylinder is of the double acting type so that when both chambers of the cylinder communicate with each other via the pressure medium tank and thus are not under pressure, the cylinder acts as a shock absorber to absorb lateral forces imposed from either direction.

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Siegen, Germany

Eberhard Brucher