Abstract: A swaging machine comprises eccentric-driven swaging rams provided with a slide track extending transversely to the axis of the eccentric, and a slide block rotatably mounted on the eccentric and guided by said slide track as in a Scotch yoke. To provide a structure which is simple, inexpensive and light in weight, each swaging ram is coupled to the associated slide block at that end face of the swaging ram which is remote from the die. The slide track is formed by a head portion of the swaging ram and interengages with an associated guide rail of the slide block.

Abstract: A swaging machine comprises eccentric-driven swaging rams which are adjustable as regards their stroke position. Each swaging ram comprises a slide track for a transverse guidance of a slide block as in a Scotch yoke. The slide block is rotatably mounted on an associated eccentric. A bearing bushing having an eccentric bearing for mounting the eccentric is rotatably mounted in each of these slide blocks. To permit a simple adjustment of the stroke position of all swaging rams in synchronism even while the machine is in operation, each bearing bushing is provided with a radial adjusting arm and cooperates with an adjusting drive, which is fixedly mounted on the machine. Each adjusting drive comprises an output member, which is transversely adjustable relative to the bearing bushing. Each output member receives a guiding member, which is rotatable on an axis that is parallel to the axis of the associated bearing.

Abstract: Known swaging machines comprise swaging rams extending in a swaging box in a radial direction with respect to the path for the workpiece and carry swaging dies at their inner ends. To enable swaging rams of small dimensions and a compact structure to be used while avoiding sealing problems, the swaging rams have an elliptical cross section, with a major axis extending parallel to the workpiece path.

Abstract: A swaging machine comprises at least four radial rams, which are angularly apart and axially guided in the machine frame and held against rotation. Each ram is associated with a power screw, to which an oscillating angular motion can be imparted preferably by a rocker lever and an eccentric shaft. Screw-threaded drive trains actuate said power screws so as to impart the reciprocating swaging motion to the rams and to adjust their position. To provide a structure which is as simple, compact and inexpensive as possible, each power screw has two screw-threaded portions. One screw-threaded portion is operatively connected to a swaging drive train and in threaded engagement with mating screw threads of the associated ram. The other screw-threaded portion is in screw-threaded engagement with a rotatable adjusting nut of an adjusting drive train.

Abstract: Each of two tools is used in a sequence of operations to machine respective cylindrical portions of a multiple-crank crankshaft and the crankweb side faces adjoining said cylindrical portion. To permit an optimum utilization of the two tools and to ensure a substantial shortening of the time required for the machining of a crankshaft, the infeeding direction and the orbital feed rate of each tool are controlled independently of the other tool and only in dependence on the requirements for the respective operation. The crankshaft is held in a fixed position until its machining has been completed. In a milling machine for carrying out the process, each tool consists of an internal milling cutter and means are provided for moving said cutters independently of each other along three coordinate axes.

Abstract: A crankshaft is machined at cylindrical portions consisting of mainshaft portions and crankpins and at crankweb side faces associated with the cylindrical portions in a sequence of steps which proceed in the direction from one end of the crankshaft to the other. Each step comprises machining a crankpin which precedes a given succeeding mainshaft portion and a mainshaft portion, when viewed in this direction while the crankshaft is supported by a steady at the given mainshaft portion and machining crankweb side faces adjoining one of the cylindrical portions at the same time as the one cylindrical portion. To improve the accuracy with which the crankshaft can be machined, each of the step comprises machining said one cylindrical portion before the other and machining the crankweb side faces associated with the other cylindrical portion at least in part during the machining of the one cylindrical portion.

Abstract: In a process of milling a multiple-throw crankshaft comprising mainshaft portions and crankpins in alternation, two outer crankpins of three axially consecutive crankpins are milled at the same time while the crankshaft is supported at its ends and at the mainshaft portions which connect said three crankpins.

Abstract: A disc-shaped cutter body (1; 101; 201) is provided with a multiplicity of tooth plates (4; 104; 204, 204a), which engage suitable backing and end-supporting surfaces (5, 6, 7; 105, 106, 107, 205, 205a, 206, 206a, 207, 207a) of tooth holders (3; 103; 203) inserted in recesses formed by radial grooves (2; 102; 202) in the cutter body. Each tooth plate is clamped between a tooth holder and a head portion (9; 109; 209a, 209b) of an elongated holding-back member (8; 108; 208), which has a foot portion (10; 110; 210) that is disposed in the recess of the cutter body and bears on said tooth holder.

Abstract: First and second gripping heads consisting of a manipulator and a holder-up, respectively, are disposed on opposite sides of a swaging box. First and second sleeves are rotatably mounted in said first and second gripping heads, respectively and aligned on a horizontal axis which extends through said swaging box. A mandrel is non-rotatably and axially immovably mounted in said first sleeve and adapted to carry a tubular workpiece surrounding said mandrel. First and second abutments are carried by said first and second gripping sleeves, respectively, and have first and second annular gripping surfaces, respectively. Axial drive means serve to move said first gripping head along said horizontal axis toward said swaging box and to simultaneously move said second gripping head in the same direction.

Abstract: Two tool carriers are mounted in a machine housing and guided on an axis and adapted to act oppositely on each other. The tool carriers have confronting ends. Each of two forging tools has a plurality of working profiles and is mounted on one of said tool carriers and shiftable thereon to a plurality of working positions associated with respective ones of said working profiles. Each working profile is arranged to be centered on said axis when the tool provided with said working profile is in the working position associated with said working profile. Locking means are provided, which are adapted to lock each of said tools on the associated tool carrier in each of said working positions.