Abstract: A zeroing system of a rolling stand which allows to replace the working cylinders or rolls in a four-high rolling stand for hot rolling strips and to subsequently zero the rolling stand without removing the strip from between the rolls themselves during the step of rolling. Furthermore, the system of the invention allows to very rapidly and accurately carry out the zeroing operation, thus increasing the productivity in the entire production system.

Abstract: Disclosed are methods and a system for manufacturing a lead or lead alloy plate lattice for a lead-acid battery, comprising continuous extrusion of a melt of lead or lead alloy under temperatures lower by 10-100° C. than the melting point of lead, or the lead alloy, the extrudate being subsequently subjected to a flattening process under a temperature lower by more than at least 230° C. than the melting point of lead or the lead alloy, with a total draft rate less than 10%, and thereafter the extrudate may be processed so as to manufacture a plate lattice.

Abstract: In a method for producing hot-rolled sections of steel with a rectangular or square cross-section, a substantially round pipe blank produced seamlessly by hot rolling or cold finished and welded and having a defined nominal outside diameter is initially produced and then formed at a forming temperature into a hollow section having the required cross-section, with visible edges C1 and C2 of the hollow section having a value ?1.5×t (t=wall thickness). The pipe blank has a nominal outer diameter determined from a reduction ratio of the pipe blank to be achieved and the hollow section dimensions to be achieved, wherein the reduction ration lies within a range of ?2% to ?13% and is determined according to the following formula: Reduction ratio R[%]=[(2×(H+B))??×D]×100%/[2×(H+B)].

Abstract: A blank rolled in transverse directions with respect to the longitudinal axis of the blank, and with the aid of a drive for rockingly moving rolls in opposite directions, ensures that the geometry and dimensions of finished parts do not coincide with the form and dimensions of a die. A four-link articulation mechanism lifts/lowers the upper roll and transmits a rolling force thereto. Rods of hydraulic torque cylinders pivotally connect to ends of a rocker thereby transmitting oppositely directed torques and a rolling force to a lower roll. A wedge mechanism coupled to the lower end face of the lower thrust bearing lifts/lowers the lower roll thereby transmitting a rolling force thereto. A rack bar disposed between retainers horizontally moves during rolling and secures the blank using a cradle.

Abstract: Chamfer cutting devices are described. The chamfer cutting devices include a mounting bracket, an electromagnet rigidly attached to the mounting bracket, a hold/release arm magnetically coupled to the electromagnet, a chamfer former rigidly attached to the hold/release arm, wherein the chamfer cutter comprises two bending beams, each terminating in a chamfer point, and a blade rigidly connected to the mounting bracket and positioned between the chamfer points. Dispensers incorporating such chamfer cutting devices and methods of chamfer cutting are also described.

Abstract: A fully hydraulic edging system suitable for use in wide plate mills is disclosed. The need for electro-mechanical screws to effect large movements of the side rollers is avoided by employing a pull-back hydraulic cylinder for this purpose. The main hydraulic cylinders are switched to a non-operational mode during large movements thus avoiding the need for large volumes of hydraulic fluid to be transferred under high pressure.

Abstract: A pilot assembly with a self-contained stripper and method for metal forming dies has a cylindrical pilot with internally mounted reciprocating ejector pins with outer ends that protrude through holes in the body of the pilot to strip stock from the pilot. The pilot assembly is secured to the die by a window mount such that one or more surfaces of the pilot abut surfaces on the window mount and die to secure the pilot to the die and window mount when the window mount is secured, via a fastener, to the die. A spring within the pilot assembly contacts an end of the ejector pins to force the pins to reciprocate when the dies are pulled apart. The assembly can be made without the locating pilot surface to provide a stripper assembly for stripping the stock from the associated die.

Abstract: A guide pin assembly for metal forming dies includes a cylindrical guide pin body with an external retainer groove adjacent one end thereof in which a retainer ring is received. An annular guide pin ring with an outside diameter greater than the pin body, has a counterbore adjacent the outside end thereof and a retainer groove in a medial portion thereof which receives the outer portion of the retainer ring to securely interconnect the pin body and the ring and thereby form an enlarged head at one end of the pin body which positively limits reciprocal motion between two associated die members. A circular guide pin head cap covers the outer end of the head ring, and includes a support collar that is closely received in the counterbore of the ring, and engages the retainer ring to securely hold the same in place.

Abstract: A dimple-forming burnishing tool allowing easy adjustment of a dimple shape is provided. The dimple-forming burnishing tool has a mandrel attached on a rear-end side thereof to a processing machine for rotation, and a cylindrical frame rotatably externally fitted on a tip side of the mandrel and holding a rolling element and a pressing element that are driven by rotation of the mandrel, for forming dimples in an inner surface of a workpiece by rotating the mandrel with the frame disposed inside the inner surface of the workpiece. In the dimple-forming burnishing tool, the mandrel includes a dimple adjusting mechanism. The dimple adjusting mechanism includes: a rolling element rotating portion causing the rolling element to rotate without moving in and out radially of the frame; and a pressing element in-and-out rotating portion causing the pressing element to rotate while moving in and out radially of the frame.

Abstract: An apparatus to produce a self-piercing and clinch nut includes a first forging die assembly, a second forging die assembly, a third forging die assembly, a transfer mechanism, and a controller. The first forging die assembly is configured to subject a blank to first processing. The second forging die assembly is adjacent to the first forging die assembly and configured to subject the blank to second processing after the blank has undergone the first processing in the first forging die assembly. The third forging die assembly is adjacent to the second forging die assembly and configured to subject the blank to third processing after the blank has undergone the second processing in the second forging die assembly. The controller is configured to control the first forging die assembly, the second forging die assembly, the third forging die assembly, and the transfer mechanism to operate.