Abstract: A positioning device for the examination of a double seam cross section and wrinkle formation by X-rays comprising an X-ray source with a first stop associated with the latter for a can to be examined in the area of the exit opening for the X-rays and detectors for receiving the X-rays. The can to be examined can be clamped in relation to the X-ray source by at least three stops offset with respect to one another, wherein two of these stops can be actively changed with respect to their position to adapt to different can diameters and to the desired incident radiation angle.

Abstract: An electromagnetic assembly, for example for a relay, has a magnetic core surrounded by an electrical coil, and an armature closing the magnetic circuit of the electromagnetic assembly. The magnetic core is of the split pole type having a first pole and a second pole, the former being surrounded by a shading ring to produce a phase shift in the magnetic flux in the region of the poles when the electrical coil is energized. A step is provided in the first pole between the shading ring and the armature so that the flux density, and thus the magnetic force, between the first pole and the armature is increased.

Abstract: The invention relates to a hydraulically actuated bar-like clamping tool with an elongated base body (1), a reciprocating elongated clamping body (2) and a tubular inflatable body (18) arranged between both said bodies for moving the clamping body. The inflatable body is secured in a fluid-tight manner at one end and is connected to a fluid connection at its other end. The base body (1) and the clamping body (2) consist each of a U-shaped section with meshing legs (9;10). A reciprocating, elongated thrust piece (15) supported on the ends of the legs of the clamping body (2) and a fixed, elongated abutment (13) are arranged between the legs (9) of the base body (1). The tubular inflatable body (18) extends on the one hand between the base body (1) and the pressure member (15) and after it is deflected it extends on the other hand between the abutment (13) and the clamping body (2). The U-shaped base body (1) has a close-off arrangement (3) at least at its end provided with the fluid connection (3a).

Abstract: A force-balanced lifting valve for the control of a fluid, comprises a housing having paths for the fluid, an axially movable component in the form of a valve body provided on a shaft mounted so as to be axially movable in the housing, for the opening and closing a valve opening, and a sealing structure for sealing the axially movable component with respect to the housing. The valve body has associated therewith a force-balancing compensation area, which can be acted upon by pressure fluid by way of a subsidiary channel. The sealing structure comprises an elastic, axially effective sealing ring which sealingly engages the valve housing and the axially movable valve component, such that a radial portion of the ring rests axially and sealingly against at least one abutment shoulder on the axially movable valve component.

Abstract: A switching mechanism for preparing fluidic output signals of the kind comprising a first transformer acted upon by fluidic input signals which is connected in circuit in front of an electrical system which makes the converted signals available in the form of a control signal after expiration of a period presettable on said system, or of an event value. According to the invention, the electrical system comprises a combined switchable clock mechanism which is formed by a time function element (which is known per se) of the transistor or quartz type, and by a counter element (also known per se). The clock mechanism has post-connected to it a monostable multivibrator which has again connected to it a value means comprising a storage which may be activated by the transient control signal of the sweep stage for conversion of the electrical control signal of the clock mechanism into a fluidic output signal.

Abstract: A device of this nature incorporates at least one control piston displaceable within a casing, the casing having at least one venting nozzle authorizing the insertion of the piston into one of its possible operating positions, which nozzle may be shut off by means of an electromagnetically operated closing device for preparation of the outward displacement of the piston out of this operating position. To accomplish that such devices may manage with a substantially reduced electrical battery power for their electromagnetic closing device, a permanent magnet is provided which co-operates with a ferromagnetic member of the closing device, in such manner that the closing device continues to be held in its closing position while the control piston is being reversed, although the supply of electrical power to the closing device had already been turned off.

Abstract: Rod stock pieces are successively fed in a path to a work station of a multiple spindle automatic turning machine such as a lathe. A slide member supports a trailing rod stock piece and is mounted on the machine for movement towards and away from the work station. The slide member is coupled with a drive of the turning machine to thereby move the slide member together with the rod stock piece supported therewith through a stroke of predetermined length. The length of the stroke of the slide member is adjusted in dependence upon the length of the leading rod stock piece located at the work station.

Abstract: Control means for a bar holder and feeder coupled to an automatic machine tool to hold bars for and feed bars to the machine tool and having feed means to feed a bar from the bar holder through a collet of the machine tool, the control means comprising counting means settable to a determined number; trip means operable when in a set position to trip the counting means once for each work piece machined; trigger means effective to move said trip means to the set position when a new length of bar is fed into the bar holder; and coupling means coupling the counting means to means controlling machining operation of the machine tool; said determined number being settable so that, after a number of workpieces equal to said determined number have been machined from a length of bar preceding said new length of bar, such that the remnant of said length of bar is not of sufficient length safely to permit machining of a further workpiece therefrom, the counting means cause the coupling means to stop the machine tool and

Abstract: A method for automatically controlling the operation of a rod-working apparatus of the type including a rod-feeding unit which feeds towards a cyclically operating work tool a certain length of rod per work cycle of the tool. There are selected a minimum and a maximum distance through which a rod to be fed towards the work tool is to be permitted to advance per work cycle of the tool. A rod is fed towards and into the range of operation of the tool. The actual distance advanced by the rod during a work cycle of the tool is determined. It is also determined whether the actual distance of advancement falls within the range defined between the preselected minimum and maximum distances. When the actual distance falls outside such range, operation of the rod-feeding unit is terminated.

Abstract: A screw machine has a displaceable headstock and is provided with a pusher rod having at its front end a chuck that engages the rear end of a bar that passes axially through the headstock. This pusher rod is connected to a chain drive at least one of whose sprockets is connectable through a clutch to a gear meshing with a rack carried on the headstock. When this clutch is closed the headstock and pusher rod are positively locked together for joint displacement. During feed operations the two are disconnected so that the pusher rod can displace a new length of bar through the headstock, and the pusher rod may be arrested during backward displacement of the headstock in order to allow the chuck thereof to get new purchase on the bar.

Abstract: A screw machine has a headstock provided with an openable and closable chuck rotatable at high speed and having a throughgoing aperture of cross-sectional shape complementary to that of a bar to be machined in the screw machine. A feed apparatus for this machine comprises means for detecting the rotational speed of the chuck and for generating a speed output when the rotational speed lies within a predetermined range. In addition, a pusher is provided which only advances the bar into the aperture of the chuck after generation of the output. This pusher is engageable with an abutment that is only displaced out of its way when the speed output is generated. Furthermore the apparatus generates a position output when the bar is properly in place and has a timer which withdraws the bar from the chuck if within a predetermined time limit after generation of the speed output the position output is not generated, indicating that the apparatus is unable to load the bar.

Abstract: An arrangement for feeding rod-shaped workpieces to a machine tool comprises an elongated hollow guide member for accommodating a respective workpiece therein. A support structure extends longitudinally of the guide member and surrounds the same with spacing, and a plurality of elongated elastically yieldable members extends longitudinally of the guide member in the spacing and supports the guide member in the support structure. The oscillations to which the guide member is subjected during the operation of the arrangement are damped by the elastically yieldable members so that they are not transmitted to the support structure. The elastically yieldable members may be hollow tubes into which a pressurized medium is introduced, and the pressure of the medium may be adjusted so as to correspond to the various working conditions.

Abstract: The present invention relates to a programmable device for mechanically executing work operations, more particularly, to a handling device consisting of a series of mutually coupled rotating and/or displacement elements, wherein the moving part situated at the one end is associated with a production unit while the moving part situated at the other end has a tool mounted thereon, for example, a gripper means for handling workpieces, paint spray guns for applying paint, welding rods for resistance welding, etc. The moving elements are designed to move various loads into predetermined positions at given speeds.

Abstract: An arrangement for feeding rod-shaped workpieces to a machine tool comprises an elongated hollow guide member for accommodating a respective workpiece therein. A support structure extends longitudinally of the guide member and surrounds the same with spacing, and a plurality of elongated elastically yieldable members extends longitudinally of the guide member in the spacing and supports the guide member in the support structure. The oscillations to which the guide member is subjected during the operation of the arrangement are damped by the elastically yieldable members so that they are not transmitted to the support structure. The elastically yieldable members may be hollow tubes into which a pressurized medium is introduced, and the pressure of the medium may be adjusted so as to correspond to the various working conditions.