Metal deforming – With means to handle work or product – Including means to permit maneuvering of work or product at...
Patent
1988-11-02
1989-11-07
Spruill, Robert L.
Metal deforming
With means to handle work or product
Including means to permit maneuvering of work or product at...
72422, B21D 4310, B21J 1312
Patent
active
048783730
DESCRIPTION:
BRIEF SUMMARY
Manipulators for manipulating metal ingots, particularly during forging operations, are well known. These manipulators usually comprise some form of wheeled carriage supporting a peel assembly which, in turn, supports the ingot in cantilever fashion. The ingot is gripped by at least two co-operating jaws which are pivotally secured to a head at one end to position the supported ingot in a desired angular position.
It is an object of the present invention to provide a peel assembly for a manipulator which is of improved construction.
According to the present invention, a peel assembly for a manipulator comprises an elongate shaft having an enlarged head at one end thereof and at least two co-operating jaws pivotally secured to the head; an elongate inner housing surrounding part of the shaft and carrying bearings which support the shaft for angular rotation about its longitudinal axis; an elongate outer housing fitted around the inner housing so as to prevent relative rotation therebetween and with co-operating surfaces on the two housings which permit the inner housing to slide in the direction of its length relative to the outer housing; first drive means for rotating the shaft about its longitudinal axis and second drive means connected to the inner housing for sliding the inner housing and the shaft relative to the outer housing.
The first drive means is conveniently an electric or hydraulic motor driving a pinion which is permanently meshed with a gear mounted on a splined portion of the elongate shaft. In this way, rotation can be applied to the shaft even when the shaft has been displaced in the direction of its length.
Alternatively, the gear wheel is fixed to the shaft and the pinion is enlarged in the direction of movement of the shaft to accommodate movement of the shaft.
The second drive means for sliding the inner housing relative to the outer housing conveniently takes the form of one or more piston-cylinder devices mounted on the outer housing and with the piston rods connected through a crosshead or collar to one end of the inner housing. By displacing the inner housing, the shaft is also displaced in the direction of its length.
The elongate shaft conveniently has an axial bore and a rod is positioned in the bore and connected at one end to the co-operating jaws and means is provided on the opposite end of the shaft for displacing the rod in the direction of its length in order to actuate the jaws between an open position and a position in which an ingot can be gripped between them.
The inner and outer housings are of any convenient cross-section with the outer surface of the inner housing and the inner surface of the outer housing providing co-operating surfaces which enable the inner housing to slide in the direction of its length relative to the outer housing but prevent relative rotation. The co-operating surfaces on the two housings may be arranged on the sides of a rectangle or they may be arranged on the sides of a triangle.
In order that the invention may be more readily understood, it will now be described, by way of example only, with reference to the accompanying drawings, in which:
FIG. 1 is a side elevation, partly in section, of a peel assembly for a manipulator;
FIG. 2 is a section on the line 2--2 of FIG. 1; and
FIG. 3 is an elevation, similar to Figure 2, but showing an alternative embodiment.
A peel assembly for a manipulator for manipulating metal ingots comprises an elongate hollow shaft 1 having an enlarged head 3 at one end. A pair of bell crank levers 5 are pivotally mounted on the head 3 and one end of each bell crank lever is pivotally connected to a coupling 7. The other end of each bell crank lever carries a jaw 9 and the jaws co-operate together to grip an ingot placed between them when the two bell crank levers are pivoted by axially displacing a rod 11 connected to the coupling 7 and extending through the axial bore 13 of the shaft 1. A piston-cylinder assembly 15 is mounted on the end of the shaft 1 which is opposite the enlarged head and the assembly is conne
REFERENCES:
patent: 1881169 (1932-10-01), Brosius
patent: 3126770 (1964-03-01), Wuppermann et al.
patent: 3773189 (1973-11-01), Kitamura et al.
patent: 4776199 (1988-10-01), Schubert
patent: 4815311 (1989-03-01), Schubert
Hemingway Trevor
Wilson Geoffrey
Dave McKee (Sheffield) Limited
Spruill Robert L.
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