摘要:
There is provided a punching device for punching a workpiece into a predetermined shape using a die and a punch, the device including: load sensors which measure a load in a punching direction at at least three predetermined points different from each other; and a control device that calculates a first moment, which is a sum of moments of the measured load around a first axis, and a second moment, which is a sum of moments of the measured load around a second axis, with respect to the first and second axes on a plane perpendicular to the punching direction, and determines that foreign matter is generated in a case where a magnitude of at least one of the first and second moments is deviated from a range of predetermined values.
摘要:
A punch, apparatus and method for forming opposing holes in a hollow part, and a part formed therefrom. The punch includes an end portion adapted to pierce an entry hole and bend material around the entry hole to form a retained slug along an inner edge of the entry hole. The punch also includes an enlarging portion adapted to enter the entry hole after the end portion to enlarge the entry hole by bending the slug and additional material towards the interior′ of the part. The punch has a length greater than a cross-section of the part such that further advancement of the punch through the part punches an exit hole in the part opposite the entry hole.
摘要:
An in-die hydropiercing device comprises a punch with an annular shearing blade which is operated by a hydraulic cylinder and is received in a ring-shaped die button mounted in one of the dies that form a die cavity for the hydroforming of a part, a center support member that is received in the center of the punch and supports the wall of the part inward of the shearing blade during the hydroforming of the part and also during the piercing of the part with the shearing blade, a slug collector, and a slug retainer that is mounted on the center support member and provides for retention of a slug produced from the piercing operation against the center support member and later releases the slug onto the slug collector for disposal following the opening of the dies and insertion of the slug collector between the open dies and then retraction of the slug collector with the slug for slug disposal.
摘要:
According to the hydroforming method by the invention, when slots with the aspect ratio of 3 or more are pierced onto the bulge-formed portion made by the hydroforming, even the piercing can be carried out within a series of processing steps in the hydroforming, thereby eliminating the piercing operation by means of the cumbersome machining process such as milling and ensuring an excellent slot configuration. Thus, the hydroformed parts by the invention are best suited for the automobile parts etc. where various piercing operations are required, and the mold used for the hydroforming method by the invention can be widely employed for processing the automobile parts etc., whereby the invention can be applied for processing the parts in automobiles and industrial machineries as well.
摘要:
A method of forming a space frame for a cab, including forming each of a pair of hydroformed, longitudinally extending inner side rails, a hydroformed connecting member, a hydroformed first upper cross member, each of a pair of hydroformed upper longitudinal members, and each of a pair of hydroformed A-pillar members. The method including, providing a tubular metallic blank having a tubular metallic wall. The method also including placing the tubular metallic blank into a die cavity of a die assembly, the die cavity having die surfaces, and providing a high pressure fluid into an interior of the blank to expand the metallic wall of the central portion of the blank outwardly into conformity with the surfaces of the die cavity to define the respective hydroformed member. The method further including mounting the connecting member to each of the inner side rails, and mounting the first upper cross member to said connecting member; mounting each of the upper longitudinal members to the first upper cross member; and mounting each of the A-pillar members to one of the upper longitudinal members.
摘要:
A hydroformed dovetail joint and method of joining tubular members includes a first hydroformed tubular member having a depression therein and a second hydroformed tubular member having an end. The end of the second hydroformed tubular member is disposed over the depression of the first hydroformed tubular member to join the first hydroformed tubular member and the second hydroformed tubular member together to form a dovetail joint between the first hydroformed tubular member and the second hydroformed tubular member.
摘要:
Apparatus for hot gas blow-forming including opposed heated and insulated tool containers, each including a tool heater plate that is adapted for attachment to a platen of a press with one or more load bearing spacers interposed between the tool heater plate and the platen. Each tool container also includes an insulation enclosure having a base portion that is interposed between the tool heater plate and the platen and further having perimeter wall portion that surrounds the tool heater plate. A perimeter seal is preferably attached to at least one of the heated and insulated tool containers and is adapted for sealing engagement with the other of the heated and insulated tool containers.
摘要:
A process of making a cutter foil for dry shaving apparatus, using a rubber cushion, and a die having raised parts each of which decreases in cross section from a base to a free end, and consists of two superimposed portions between which is a steplike offset, the end portion having a height at least equal to the thickness of the foil; the process comprising a single operation of pressing the die and the cushion together with the foil between them, which causes the end portion of each raised part to punch a hole in the foil, as a first step, and directly thereafter causes the base portion to turn over the edge of the hole, as a second step; followed by removing part only of the turned-over material by grinding in a plane parallel to the surface of the foil.
摘要:
Wrinkle free deep drawn shells are formed from aluminium foil and other similar materials by employing a tapered die and a punch having a radially compressible elastic or hydropneumatic element at the nose end of the punch, such element having initial dimensions approximately equal to those of the die mouth.
摘要:
A TWO-STEP METHOD IS PROVIDED FOR PRODUCING LOUVERS BY THE GUERIN PROCESS IN WHICH A FORM BLOCK HAVING A CLOSEDEND RECESS WITH AN ERECT SHEAR RULE THEREIN AND A RESILIENT FORMING BLOCK ARE MOVED RELATIVE TO EACH OTHER WITH A SHEET METAL BLANK THEREBETWEEN, INCLUDING A FIRST PREFORMING STEP IN WHICH A PLASTIC INSERT IS PLACED IN THE RECESS ALONGSIDE THE SHEARS RULE WHICH PREVENTS SHEARING OF THE BLANK WHILE EFFECTING CONTROLLED STRETCHING OF THE METAL OVERLYING THE RECESS AS THE BLANK IS FORCED INTO THE RECESS BY THE FORMING BLOCK, AND A SECOND SHEARING AND FORMING STEP PERFORMED IN THE SAME MANNER IN THE SAME APPARATUS WITH THE PLASTIC INSERT REMOVED.