In work transfer machinery, particularly for machine tool application, which includes a work station and a pallet movable into and out of the station, apparatus for automatically locating the pallet in a predetermined position, and thereafter releasably clamping the pallet in this position. An actuator shaft operates to first move the pallet locators into the pallet and to subsequently provide for spring pressure activated movement of clamping arms into clamping engagement with the pallet.
An automatic work piece changer for a milling machine and the like is described. In the work piece changer there is provided a work piece hopper (2) for storing a plurality of work pieces to be movable, a carriage assembly (3) for removing work pieces from the hopper (2) to a work station where they are machined, a clamping assembly (6) for holding each of the work pieces in the work station so as to prevent their movement during the machining thereof and an ejecting assembly (60) for ejecting machined work pieces from the changer after they are machined. Operation of the work piece changer is controlled by signals received from the milling machine in a conventional manner.
A workpiece transfer mechanism having a plurality of successive stations each provided with a fixture for locating and clamping a workpiece supporting pallet in a precise position for performing a machining operation on the workpiece. The transfer mechanism is of the lift and carry type so that the pallets are transported with a minimum amount of sliding wear on the locating surfaces. The precise location of the pallet is obtained by two clamping mechanisms.
A device for precisely aligning a shuttle (28) in registration with a track from which the shuttle (28) is to receive an integrated circuit electronic device or into which the shuttle (28) is to deposit such a device. The device includes a shaft (42) disposed for rotation about an axis generally parallel to the axis along which the shuttle (28) moves. Pins (44), one corresponding to each of the tracks from which an integrated circuit electronic device is received within the shuttle (28) and the track or tracks into which such a device is to be deposited by the shuttle (28), extend generally radially from the shaft (42). The shuttle (28) carries a notch plate (54) having an open-sided notch (60) formed therein. The notch is defined by a pair of wall edges of a pair of fingers (56) formed in the plate (54). When the shuttle (28) is in a location approximating an intended position at a particular track, the shaft (42) is rotated so that the pin (44), corresponding to the particular track, is urged into the notch (60). As the pin (44) enters the notch (60), lateral adjustment of the shuttle (28) is effected to precisely register the shuttle (28) with the particular track.
Successive layers of stretch film are wrapped around a load stacked on a motor driven rotatable turntable, the film being supplied as the leading end of a web pulled off a rotatable non-driven roll, and rotation of the roll being initially positively restricted by a spring biased brake. Tension in the web is successively increased to automatically increase stretch in the web in stages during succeeding revolutions. An anchoring member is automatically projected to hold the pallet immovable on the table during wrapping.
A tray positioning arrangement for delivery system in which a tray is formed of a casing opened at its top and an article receptacle member accommodated therein and having plural article holding pits. The article receptacle member has abutment portions and the casing has openings at its positions corresponding to the abutment portions of the article receptacle member so as to allow a positioning device directly act on the article receptacle member through the openings of the casing and the abutment portions of the article receptacle member.
