Abstract: A tube partial thread forming apparatus and method is disclosed. A tube is placed on the apparatus around internal die sections, which are separated by a mandrel to cause the internal die sections to engage the tube. stripper pieces are moved into engagement around the outer surface of the tube to secure and support the tube. External die sections extend through the stripper pieces and engage the tube and form partial threads thereon.

Abstract: An apparatus for contacting and applying a force to opposite sides of a workpiece, such as a resistance welding device adapted for use on an automated assembly line. The apparatus is configured to be extremely rigid to ensure accurate movement and positioning of a pair of contacts with respect to a workpiece. The apparatus includes a frame member supported by a base with first and second shafts that are secured to the frame member and slidably supported by the base. The second shaft prevents rotation of the frame member about the first shaft during operation of the apparatus. The frame member carries one of the contacts, and is biased away from the workpiece and toward a second position nearer the workpiece. An extendable member and a link are both pivotably mounted to the frame member, and support an anvil carrying the remaining contact. The link is engaged with the base when the link is in a first rotational position, at which point the second contact is held away from the workpiece by the anvil.

Abstract: An apparatus is provided to form a workpiece to a net position and pierce a hole in the workpiece. The apparatus includes a base having an inner and outer slide assembly mounted thereon for reciprocal movement. Both the inner and outer slides include a cylinder and a rod extending therefrom. The apparatus includes a compressed spring attached between the inner slide and base, and coupled to the rod of the outer slide as to operate to equalize the inner slide about the workpiece. The rod of the outer slide impacts the base to drive a form against the workpiece to form the workpiece to a net position. The rod of the inner slide actuates to drive a punch through the workpiece to pierce the workpiece.