摘要:
Method and apparatus for forming intruded sleeves in extrudable metal tubing thereby to receive branch tubes which are brazed in place. The apparatus comprises a split mandrel and a punch which drives a punch head through the tube wall section and into a pocket in the upper section of the mandrel to form the intruded sleeve structure. Removal of the mandrel is accomplished by removing a lower section, dropping the upper section off of the intruded sleeves, and thereafter removing the upper section.
摘要:
The apparatus of the present invention comprises at least one hole-punching device operated by a pneumatic cylinder for driving a punch rod through the peripheral surface and radially to the center of a roll of roofing sheet material. The method of the invention provides for the steps of preparing the sheet roofing material, winding the sheet into a roll, and punching a plurality of perforation holes in the roll from the surface to the center thereof.
摘要:
Apparatus is disclosed for making open-gusset bags from overlapping webs of thermoplastic material. A notch-perforator is provided along a side edge of the web for providing sets of notches and perforations or slits at spaced points along the web. V-shaped notches are applied to the gusset portion of the web and then the web is slit and welded transversely to divide the web into bags.
摘要:
A method and apparatus for forming bolt and center-pilot mounting openings in vehicle wheels, particularly styled-disc vehicle wheels. A preformed rim and disc assembly is engaged and fixtured around the rim bead seat with the inboard disc face resting on a lower die assembly and without plastic deformation to the rim or disc. An upper die assembly having an array of bolt hole punches is moved into piercing-and-coining engagement with the disc to form the bolt openings continued motion of the upper die assembly against the wheel disc pushes the disc and lower die assembly into shearing engagement with a center punch which forms the center-pilot opening. The axes of the bolt openings and/or center pilot opening and/or bead seats may be aligned or offset from each other.
摘要:
A polymer tube is inserted into a passageway in a guide block and a polymer support rod is inserted into the tube. Pluralities of tubular punches are simultaneously driven from different radial positions through the wall of the tube and into the support rod to form holes in the tube.
摘要:
A hole punch having a curved cutting edge of generally the same contour as the surface being punched produces clean holes in wall of foamed plastic containers.
摘要:
The press includes a reciprocable ram carrying a movable tool element which punches a slug from the side of a tubular member upon mating with an underlying fixed tool element mounted on a horn projecting beneath the ram. The lower surface of the movable tool element and the upper surface of the fixed tool element are curved to conform with the outer and inner surfaces, respectively, of the tubular member to keep from deforming the slug as the latter is punched from the tubular member so the slug may be reused to cover the hole formed in the side of the member. A small punch also is carried by the ram and mates with a small hole in the fixed tool element to punch a small hole in the slug as an incident to punching out the slug.