摘要:
A method of shearing a thin metal sheet having a thickness of approximately 0.1 mm or less so as to be separated into a product and scrap by a pair of dies. A chamfer or a round having a size of approximately from 5 to 10 times greater than the thickness of the thin metal sheet is arranged at the lip of a first die which presses one portion of the thin metal sheet which is to be scrap. A chamfer or a round is not substantially arranged at the lip of a second die which presses the other portion of the thin metal sheet which is to be a product. A backing material and the thin metal sheet are overlapped so as to be a laminate. The backing material has a thickness of approximately 2 times or more greater than that of the thin metal sheet and is formed of a flexible material having a very small elongation and is soft enough not to substantially prevent the thin metal sheet from being sheared, such as, for example, paper. The laminate is arranged such that the backing material faces the pressing surface of the first die and that the thin metal sheet faces the pressing surface of the second die. Then, the thin metal sheet and the backing material are sheared concurrently. Thus, the thin metal sheet can be sheared, by methods such as blanking and piercing, while inhibiting burring, without requiring any special type of device or blanking die.
摘要:
Method and Apparatus for carrying out an operation, such as pressing, riveting, cutting, etc., on a mechanical workpiece which operation comprises at least one stroke, or movement, along a predetermined path, of at least two active members (6,7) each being arranged on a carrying unit (1,2). The mechanical workpiece is first positioned between the active members (6,7). Thereafter the carrying units (1,2) for the active members are approached to each other in a first part of the stroke. The carrying units (1,2) are then locked to each other at the end of said first part of said stroke and a second part of said stroke is carried out by way of the relative movement between the active members (6,7) to achieve the desired effect on the said workpiece.
摘要:
A method of burring includes a first step of forming, in a metal plate, a bottomed expanded portion expanded into a die hole with a punch and a die having the die hole into which the punch is inserted, the die hole being formed such that a predetermined gap is formed between an inner peripheral face of the die hole and an outer peripheral face of the punch so as to have a width larger than a thickness of the metal plate, a second step of swaging the bottom of the expanded portion of the metal plate between the punch and the bottom face of the die hole to render the bottom of the expanded portion thinner such that a material of the expanded portion bottom is caused to flow to a peripheral wall portion of the expanded portion positioned in the gap between the inner peripheral face of the die hole and the outer peripheral face of the punch, thereby thickening the peripheral wall portion of the expanded portion, and a third step of opening the bottom of the expanded portion.
摘要:
A punching press according to the present invention employs a servo motor as the driving source of the punching operation to achieve fine control, and exhibits a performance which is equivalent to or higher than that of a conventional punching press which employs a hydraulic cylinder. A hammer member which performs the punching operation is coupled to a stroke member which performs a stroke motion. The stroke member is coupled to a motion converting unit which converts the rotational motion of a servo motor into a stroke motion.
摘要:
A DIN rail cutter and punching apparatus for cutting a DIN rail to a selected length and for punching at least one mounting slot therethrough at a desired angular orientation comprises a shear for cutting the DIN rail and a punch and die set which is operatively coupled for operation in unison with the shear. The DIN rail cutter comprises a shear for cutting the DIN rail and is arranged for removably receiving a cutting die for accommodating any of a plurality of cutting dies for cutting different shapes of DIN rail. A rotating punch and die set for punching a DIN rail at any of a plurality of angular orientations comprises a punch mounting block; a punch rotatably mounted in the punch mounting block; a die mounting block and a die rotatably mounted in the die mounting block; the punch mounting block and the die mounting block are mounted for relative movement so as to advance and retract the punch into an out of engagement with the die. An interlocking member releasably interlocks with the die for preventing rotation thereof. A release arrangement releases the interlocking member in response to advancement of the punch into engagement with the die such that rotation of the die can only be achieved with the punch in engagement therewith to thereby positively maintain alignment between the punch and the die without regard for the angular orientation of the punch and die relative to a workpiece.
摘要:
A punch for a punch press includes a punch holder which is installed on a punch installing portion of the punch press and a plurality of punch bodies so supported on the punch holder as to be independently movable in the vertical direction. Shearing blade portions are formed on the lower ends of the respective punch bodies. The shearing blade portions have elongated configurations, each extending in a different direction in the horizontal plane.
摘要:
A pulser ring has cylindrical inner and outer rings nested together. The inner ring is formed at its one end with protrusions arranged at equal angular intervals. The outer ring is in the shape of a round comb and has its teeth engaged at a portion near the tip thereof in the grooves defined between the adjacent protrusions formed on the inner ring. The tip of each tooth protruding from the grooves is bent radially inwardly so as to engage the end face of the protrusion on the inner ring, thus coupling the inner ring and the outer ring together.
摘要:
A die stamping system includes opposed die members which clamp a metal workpiece to be shaped, cut or pierced after which the die members are moved away from one another and a part is subsequently ejected wherein the ejector is controlled for a selected delay time by a plurality of cylinder assemblies mounted in a manifold so that they are connected to a source of inert gas such as nitrogen under high pressure and to a source of hydraulic pressure. Each cylinder assembly includes a piston associated with and exposed to the nitrogen in the manifold. The cylinder assemblies are connected to a single hydraulic valve which has associated therewith an accumulator and which is operated simultaneously to actuate the cylinders. The hydraulic lines to the cylinders are provided in the manifold.
摘要:
A method and apparatus for press-cutting selected patterns in a workpiece. The apparatus includes a plurality of dies and at least one punch element associated with each die. A plurality of backing plates are provided to drive the punch elements against the workpiece when the backing plates are positioned in the operative position. A press-cutting pattern selector selectively positions the backing plates in the operative position or an inoperative position depending upon the pattern to be press-cut.
摘要:
A module for selectively deploying a reciprocable tool, such as a hole punch, which is reciprocated by a press. The module includes a housing which is attached to the ram of the press. The housing retains a reciprocable tool within a bore for movement between an extended position and a retracted position. The reciprocable tool is connected to the housing by means of a telescopic linkage comprising a cone clutch having resilient fingers that selectively grip a pin. The housing includes a conical surface which engages beveled portions of the resilient fingers holding them in a closed position. A spring biases the cone clutch to its closed or gripping position unless air pressure is supplied to an air chamber which counteracts the biasing force of the spring to open the resilient fingers. When the resilient fingers are open, a shifting means comprising a spring, or alternatively a solenoid, is effective to shift the pin between an extended position and a retracted position within the cone clutch. A controller is disclosed for selectively shifting the reciprocable tool between its extended position and its retracted position within the module wherein a card having air flow control holes corresponding to modules selected for changeover is inserted in the controller.