摘要:
Presse de perforation comportant un premier et un deuxième outil opposés montés sur un premier et un deuxième élément, lesdits éléments étant déplaçables vers les côtés opposés du matériau devant être formé entre les outils. Ces éléments de déplacements sont actionnés électromagnétiquement avec une accélération rapide l'un vers l'autre pour frapper simultanément le premier et le deuxième outil en déplacement rapide contre les côtés opposés du matériau à former. Les deux éléments de déplacements opposés avec leur disositif de commande électromagnétique respectif sont disposés de façon que le moment du premier outil avec ses parties mobiles connexes soit pratiquement égal, à l'instant de l'impact, au moment du deuxième outil avec ses parties mobiles de sorte que les impulsions égales et opposées résultant de chaque moment s'annulent pratiquement. Grâce à ce mouvement opposé avec des moments qui s'équilibrent lors de l'impact, très peu d'énergie ou de travail est gaspillé et perdu sur une plate-forme ou un autre support de la presse de perforation, et seuls un choc et des vibrations mécaniques insignifiants ou de trés faible intensité sont induits dans la plate-forme ou tout autre support. Ainsi, très peu de bruit est transmis dans l'environnement par l'intermédiaire de la plate-forme ou tout autre support. Le matériau est acheminé dans la région située entre le premier et le deuxième outil par un mécanisme d'acheminement qui peut aussi être déplacé dans les deux directions. On décrit divers arrangements servant à positionner correctement la plaque d'acheminement entre les outils opposés et à commander leurs dispositifs électromagnétiques afin d'obtenir un impact virtuellement simultané des outils avec des moments sensiblement égaux contre les côtés opposés du matériau devant être formé entre les outils.
摘要:
A gas cylinder control system for use with machine systems such as die stamping systems that includes at least one gaseous fluid cylinder (10) associated with the machine system, gaseous intensifier control cylinder (16) normally operated in timed relation to the gaseous cylinder (10) and a passage (20) providing communication between the gaseous cylinder (10) and the gaseous intensifier control cylinder (16). The gaseous intensifier cylinder (16) operates at substantially higher pressure than the die cylinder (10). A normally closed control valve (15) is provided in the passage (20) and is operable to open the passage (20) in time relation to the operation of the machine system in order to apply the higher gaseous pressure of the gaseous intensifier cylinder (16) to the gaseous cylinder (10) and lock the gaseous cylinder and prevent it from moving until the control valve (15) is actuated to close the passage (20) thereby providing a predetermined time delay.
摘要:
A stamping and forming machine has first (4) and second tooling assemblies which are movable relatively towards and away from each other. Pilot pins (12), are mounted on, and moved with, the first tooling assembly (4). The pilot pins enter pilot holes in the strip material and are movable on the first tooling (4) assembly between extended oositions and retracted positions. When the tooling assemblies are in their open, or separated, positions, the pilot pins (12) are in their retracted positions and clearance is provided to permit feeding of the strip between the two tooling assemblies. As the tooling assemblies move to their closed positions, the pilot pins move to their extended positions and perform their piloting function. The pilot pins are moved by a lever (24) which is pivoted to the first tooling assembly and to the pilot pins.
摘要:
A punch (27) and ram assembly (13, 36, 40) for a punch press (10) which clamps a workpiece prior to punching with the same mechanism used to strip the workpiece from the punch (27) as the punch is retracted. The elements of the clamping and stripping mechanism (36, 40) are carried and actuated by the ram (13) and its motion. The invention allows for adjusting the clamping and stripping force.
摘要:
A punch (27) and ram assembly (13, 36, 40) for a punch press (10) which clamps a workpiece prior to punching with the same mechanism used to strip the workpiece from the punch (27) as the punch is retracted. The elements of the clamping and stripping mechanism (36, 40) are carried and actuated by the ram (13) and its motion. The invention allows for adjusting the clamping and stripping force.
摘要:
A pressworking operation on a workpiece or material which enables pressworking energy to be transmitted to the workpiece or material in a plurality of steps with there being no sudden increase in the coefficient of friction between the working tool and the workpiece or material after release of accumulated potential energy from an elastically deformable energy carrier and in which the velocity of displacement of the working tool does not change sign until completion of working of the workpiece or material is made possible by use of a press apparatus comprising a power cam (2) contacting a roll (1) attached to a quaternary lever (3) at one connection point of the lever, the quaternary lever being connected at a second hinged connection point (6) to a rigid support at a third connection point (4) to the elastically deformable member (9) connected in turn to a second rigid support (21), with the quaternary lever being connected at its fourth connection point (7) through a hinged connecting rod (10, 13) to a unit (14,18) carrying a part (19) of a working tool and capable of reciprocating movement. The cam (2) includes sections for enabling energy to be accumulated in the elastically deformable member (9) and for release of the energy therefrom over a shorter time period than the energy accumulating time period through the medium of the quaternary lever (3) operating as a functional force-varying member. The apparatus includes provision for effecting powered variation of the angle between the semirods (10, 13) independently of displacement which may be imparted to the unit (14, 18).
摘要:
A punching device includes a body, a drive unit connected to an upper part of the body, and a cam block that moves in a horizontal direction in the interior of the body under a driving action of the drive unit. A second rotating roller, which is connected to a rod, is inserted in a second cam groove of the cam block. The second cam groove includes first and second groove portions inclined at predetermined angles with respect to the direction of movement of the cam block, such that when the rod descends downwardly toward a workpiece, a second rotating roller moves from the second groove portion to the first groove portion having a smaller angle of inclination, whereby the driving force transmitted to the rod is boosted in power.
摘要:
A sheet fabrication machine and a method of effecting simultaneous movement of a worksheet (32) and acceleration and deceleration of a servo mechanism means (25,98) for driving a tool means (29,31,92,106) to effect work on said worksheet. The method comprises the steps of: a) accelerating the movement of said worksheet (32) to position the location on said worksheet whereat work is to be performed under said tool means; b) decelerating the movement of said worksheet before said location on said worksheet is positioned under said tool means; and c) outputting a force from said servo mechanism means to begin acceleration of said tool means to effect work on said worksheet at a point during the deceleration of said worksheet but before the movement of said worksheet ceases so that said tool means comes into contact with said worksheet substantially immediately after said worksheet having come to rest with said location being positioned under said tool means.