Abstract: A method to make a flanged pin is described. The method includes feeding wire through a forming die whereby the wire is deformed to create a straight pin. The straight pin is then fed from the forming die to a heading die having a pre-formed cavity where a first portion of the straight pin is located in the forming die and a second portion of the straight pin is located in the heading die. A portion of the pin is secured in the forming and heading die, having a portion of the straight pin disposed in a gap defined by a space between the heading die and the forming die. As the die gap is closed, the portion of the straight pin is displaced into a pre-formed cavity thereby creating a flange.

Abstract: A process for cold forging a metal fastener such as a self-clinching standoff includes a punch and die set at the final head trimming station which produces the shear burr only on the underside of the fastener head where it is not visible after installation. A knock-out pin which is reciprocal within the bore of the punch forcibly ejects the fastener through a passage in the die to a point beyond an opposite side of the die. A stripper sleeve which is reciprocal about the outside surface of the punch then moves from a retracted position over the end of the punch pushing a residual scrap ring from around the outside of the punch.

Abstract: A forging press in which adjustment of the tool positions relative to each other can be quickly and easily carried out, in spite of involving a low level of structural complication and expenditure, in particular by virtue of good accessibility, and especially with a low degree of susceptibility to trouble, with a support side which is stationary in the shaping procedure and which includes a die, an impact side which includes a carriage with a punch, the carriage being movable in the longitudinal direction in the shaping procedure, and a first setting device for setting the closing height spacing, wherein the first setting device is arranged on the support side of the forging press.

Abstract: A roof bolt comprises a shaft for insertion in a hole drilled in a mine roof and a head whereby the bolt may be rotated, the head being offset with respect to the longitudinal axis of the shaft so that when the bolt is rotated by means of its head the shaft is caused to describe a circle of greater diameter than its own diameter, and where the offset is at least 08 inch and not more than 0.25 inch. Preferably the offset is from 0.10 to 0.16 inch. The invention includes a method for the production of roof bolts which comprise a shaft for insertion in a hole drilled in a mine roof and a head whereby the bolt may be rotated, the method being characterised by being controlled so that at least 90% of the bolts produced have their head central axis offset with respect to the longitudinal axis of the shaft by an amount of at least about 0.08 inch and not more than about 0.25 inch.

Abstract: A upset forging machine assembly (20) including a pair of gripper dies (22, 24) for gripping forging stock in a closed position and movable to an open position for receiving stock and removing a forged part. A gripper drive mechanism (34) moves the gripper dies (22, 24) between the open and closed positions. A header (84) is removably clamped to a header support member (36) by multiple pairs of studs (72) extending from the header support member (36) with each stud (72) having a head (78) disposed in an associated channel (90) in the header (84). An actuation mechanism (92, 94) moves the studs (72) between a clamped position and a release position. A tool punch (142) is supported by the header (84) for upsetting the forging stock. Having the header (84) clamped to the header support member (36), a header drive mechanism (46) moves the header support member (36) to a forging position is when the gripper dies (22, 24) are in the closed position.

Abstract: In a process for forming a bolt, a die, a rod-shaped knock-out member, and a punch are prepared. The die has opposite end surfaces, a through bore opened to one of the opposite end surfaces, and a space connected with the through bore and disposed substantially perpendicular to an axial line of the through bore. The knock-out member is disposed in the through bore. The punch is disposed so as to face one of the opposite end surfaces of the die to which the through bore is opened. A bolt precursor is fitted into the through bore of the die at the leg member, and is pressed by the punch at the head member. The leading end of the leg member is pressed by the knock-out member, and accordingly an excess material of the bolt precursor at around the leading end of the leg member, or an excess material thereof adjacent to the leading end of the leg member is deformed and flowed into the space of the die as a thinned-out portion. Thus, the bolt precursor can be flattened at the leading-end surface of the leg member.

Abstract: In a method of making a head on an elongate blank (26), the blank (26) is moved into a die (16) having a bottom stop (28) such that part of the blank (26) extends outside the die (16) end opposite the bottom stop (28). The protruding part of the blank (26) is engaged by a pre-upsetting bushing (25) positioned in extension of the die (16) and a punch (27) is slidably movable in the pre-upsetting bushing. The bushing (25) and the die (16) are moved away from each other during the latter part of the deforming procedure. The movement of both the punch (27) and the bushing (25) with respect to the die (16) is positively controlled so that the bushing (25) and the die (16) are moved away from each other at the latter part of the deforming procedure, while the punch (27) continues to press against the blank in a direction toward the die (16).