Abstract: This invention relates to apparatus for forming shaped pieces. One embodiment useful in forming metal parts, such as fins for use in the compressor section of gas turbines, comprises apparatus for use with a flat-surfaced die having a forming die depression in the upper surface, which has a pair of cylindrical rolls oriented with their axes parallel and positioned one above the other between the flat surface of the die and the lower surface of a downward acting hydraulic press, with the rolls simultaneously moveable horizontally and in rolling contact with each other, the upper surface of the die, and the lower surface of the hydraulic press platen, by a horizontally oriented hydraulic ram. The platen and the die are limited as to how close they may come to each other, and the rolls are free to "float" away from the die and toward the platen as the lower roll comes into contact with the work piece.

Abstract: An arrangement for regulating a rolling mill for metal rolling, the work rolls of which are supported by guided roll shells of a lower controlled deflection roll and an upper controlled deflection roll, the roll shells being supported by means of hydrostatic pressure or support elements upon a related roll support or beam. First regulation circuits are provided for regulating the pressure of the pressure or support elements of the controlled deflection rolls. A second regulation circuit for the position of the roll shells overrides the first regulation circuits, so that adjustment output magnitudes of the second regulation circuit can be impressed as reference or set values or adjustment magnitudes upon the first regulation circuits.

Abstract: In a rolling mill containing two work rolls and, as desired, supporting or back-up rolls, a rapid adjustment of the roll gap or nip with elimination of effects due to elastic elongation of the roll framework or stand is achieved in that when structuring at least one of the rolls as a controlled deflection roll containing a stationary roll support and a rotatable roll shell rotating thereabout, there is measured the position of the inner side or surface of the roll shell and an automatic control serves to adjust or readjust the roll gap or nip by causing changes in the pressure exerted upon the hydrostatic supporting or pressure elements placed intermediate the stationary roll support and the rotatable roll shell.

Abstract: A rolling mill is disclosed containing a roll stand equipped with two work rolls which are braced at back-up or support rolls which can be constructed as controlled deflection rolls. The work rolls are equipped at their opposed ends with bending devices for applying a bending moment. Simplified designs of the rolling mill contemplate constructing one of the back-up or support rolls as a solid roll. Furthermore, one of the work rolls can be omitted.

Abstract: A process for rolling a metal strip for reducing its thickness and for increasing the maximum reduction attainable per pass using a cooperative type rolling mill comprises applying differential separating forces to the metal strip without changing the magnitude of the compressive force applied to the rolls. By doing this, the maximum strip tension and the forward tension required to pull the strip through the mill may be reduced. The maximum strip tension and the required forward tension force may further be reduced by driving at least one work roll at a desired value of torque as well as applying differential separating forces. The cooperative type rolling mill uses a roll spacing arrangement to space at least some of the rolls for reducing the separating force applied to the metal strip at selected roll bites. In addition, individual drive motors to drive the work rolls at desired torque values may be utilized.

Abstract: A roll stand arrangement contains work rolls and back-up or support rolls, the work rolls being laterally supported by hydrostatic support ledges. Within each upright or support stand of the roll stand arrangement there is provided a guide frame which is guided within a window of the related support stand together with mounting elements for the back-up or support rolls. Within the guide frame there are guided the mounting elements of the work rolls in slide elements. There are simultaneously pivotably supported in the slide elements the shaft or bearing journals of the support ledges.

Abstract: In roll arrangements composed of a controlled deflection roll and a counter element the controlled deflection roll is supported by discrete force-applying sources. On the one hand, these force-applying sources are set or adjusted in accordance with a predeterminable mean pressing force and, on the other hand, also can be externally corrected. An external correction also influences the pressing force at the region of neighboring force-applying sources, sometimes in an undesired fashion. According to the invention when there is accomplished an external correction there is acted upon in an opposite sense at least one force-applying source neighboring the externally corrected force-applying source.

Abstract: This invention relates to chucks. Increasing effective operational rotational speeds of chucks, while reducing loss of gripping power due to such speeds, is achieved by a chuck with a wedge unit (13) having a greater expansion rate than that for a master plate unit (14). A master jaw (63) is balanced upon a master bearing (57) carried by the master plate unit and rocks thereon upon actuation of the wedge unit.

Abstract: A chuck comprising a body, an aperture formed in a front portion of the body, jaws which are housed in the aperture and which are retractable to enable insertion of a bit, a jaw clamp for applying pressure on the jaws such that in use they clamp against a bit and retain the bit in the chuck, a track positioned in the body, and a drive fitting which is located at a rear portion of the body and which is for enabling the chuck to be connected to and rotatably driven by a drive tool, the jaw clamp comprising an axially movable cylindrical member, a clamping device for moving the axially movable cylindrical member in a forward direction towards the jaws and for causing a pressure to be applied to the jaws when the jaws are in their bit clamping position, and a spring positioned for biasing the axially movable cylindrical member in a rearward direction towards the drive fitting, and the track extending in a longitudinal direction but also inclined to the longitudinal axis of the chuck.

Abstract: A new rolling mill configuration is provided containing fourteen rolls and which may be described as an improved six-high arrangement. The mill contains two substantially identical upper and lower roll clusters. Each roll cluster comprises a floating work roll, a chock mounted intermediate roll and a chock mounted back-up roll. The work roll is supported laterally by a pair of chock mounted side intermediate rolls and each side intermediate roll is supported by a single side backing roller assembly. The chocks of each side intermediate roll and the adjacent side backing roller assembly are supported by an adjustable stationary rigid support beam assembly.

Abstract: The routing machine includes a template having a surface with indicia inscribed thereon which is mounted on a template supporting surface. A link member interconnects the template surface to a workpiece surface. The link member includes a router for engaging the workpiece surface and a follower to engage the indicia of the template surface. A pivotal attachment is made to the template surface such that the link member can be pivoted relative thereto. The link member further includes a mounting frame such that the link member is movable in an upward or downward direction relative to the frame to enable the workpiece to be at different heights relative to the template surface.

Abstract: When two strand workpieces pass through a roll opening between two grooved working rolls on a roll stand so as to be rolled, the trailing end of one of them may leave the rolls and cause change in the roll separation. At that time mating bilateral screw-down devices are remotely controlled to adjust the roll opening at least at the position of the remaining workpiece. Alternatively in a multi-strand tandem rolling mill, the rolling speeds on roll stands upstream of a roll stand which one of the strand workpieces has left are changed by a speed ratio of (1-b.sub.2)/(1-b.sub.1) where b.sub.1 and b.sub.2 respectively designate rates of backward slip when two strand workpieces are being rolled and in the absence of one of the strand workpieces from the last-mentioned roll stand. Alternatively the roll speeds on roll stands downstream of the roll stand which one of the strand workpieces has left may be changed by a speed ratio of (1+f.sub.2)/(1+f.sub.1) where f.sub.1 and f.sub.

Abstract: A four high mill of a paired-roll-crossing type comprises upper and lower equalizer beams held in contact, respectively, with the uppermost and lowermost surfaces of upper and lower backup roll bearing cases and made movable upwardly and downwardly within a housing, roll-crossing devices mounted in the housing to turn the bearing cases that contain upper and lower work chocks about a common vertical axis on the same horizontal plane so that upper and lower pairs of rolls can cross each other, and devices for separately setting the left and right roll gaps between upper and lower work rolls. The mill further comprises work roll-bending devices mounted at both ends of the work rolls.

Abstract: A tool has independently radially adjustable cutting edges. Adjusting drives are provided for each cutting edge. Each adjusting drive is laterally spaced from, and axially overlaps, an adjacent adjusting drive. Each adjusting drive comprises a servomotor which directly drives a screw. A screw nut is axially movable on the screw and is rigidly connected by means of a bridge with an adjusting piston arranged parallel thereto. The adjusting piston is axially movable and is connected by a bearing to a tubular connecting rod. Axial movement of the latter serves to radially adjust an associated cutting edge of the tool. The connecting rods of the adjusting drives are coaxially and telescopingly arranged.

Abstract: A servo system for the rotary spindle of a machine tool in which the spindle is driven by a drive motor through a gear train having shiftable gears for changing the rate of rotation of the spindle. The transducer for the servo system is mounted directly on the motor drive shaft in order to avoid all backlash between the resolver and the drive motor. However, the transducer is arranged to regulate the angular orientation of the spindle and must therefore be maintained in synchronism with the spindle. This is accomplished by arranging the shiftable gears so that when they are moving into engagement with a new gear, engagement with the previously engaged gear is maintained until initial engagement with the new gear is achieved. Further shifting movement into full engagement with the new gear operates to release the previously engaged gear. Thus, during the initial engagement with the new gear, the shiftable gear is momentarily in engagement with both gears.

Abstract: A tube bending machine with rotary arms carrying a bending moment roller and a bending fulcrum roller has arm shafts mounted for axial movement. The arms are rotated for the tube bending action, whereby the bend so made in the tube lies in a predetermined non-planar arc. The arm shafts are turned by a pinion engaged by a rack and are moved axially by suitable pins engaged in cam slots with the rack and the cam slots all being moved simultaneously. In order to retain the tube in proper location or position during the trusts of non-planar arc bending there may be included more than one roller.

Abstract: A rod mill guide tube has a channel member of U-shaped cross-sectional configuration to which a cover member of T-shaped cross-sectional configuration is fastened whereby no seam edge is presented which a rod passing therethrough may contact.

Abstract: A hydraulically inflatable roll for flat rolled products is formed with a constant cross section internal fluid channel spaced uniformly from its working surface and extending spirally from end to end of the roll. The channel is connected through an end of the roll to a source of hydraulic fluid under pressure and also to a pressure transducer which in turn is connected to a display device. A proximity trigger is associated with an end of the roll so as to signal the start and the end of the circumferential travel of the channel past the contact line between roll and work when the roll is rotated, and the pressure exerted on that moving area in that interval is continuously measured and transmitted to the display device. Means are also disclosed for using that signal to control gauge and shape of the rolled product.

Abstract: A method of implementing the modernization of continuous tandem hot strip rolling in existing hot strip mills includes utilizing certain of the roughing stands of the roughing train and installing at least two tandem stands upstream of the finishing train in the area of the holding table so as to provide continuous tandem rolling with the finishing train. A critical transfer bar thickness on the order of 3.8 to 5 inches is necessary for the product going into the initial tandem mill stand to assure optimum results for the modernized mill.

Abstract: A mechanical gripping device for rotating jaw chucks or collet chucks. With the known gripping devices, rotationally symmetrical parts can be gripped in a rotating jaw chuck or collet chuck either only from the outside or only from the inside. The invention is based upon the problem of creating a mechanical gripping device for inside and outside gripping. With the invention, in a bore hole of a spindle two axially displaceable disk-shaped spring plates are arranged which are pressed into respective end positions by springs arranged between them. Centrally to the disk-shaped spring plates a slide is arranged which is selectively coupleable with one of the two spring plates.