Abstract: A ram driving method including the steps of fixing one end of a large-diameter piston rod (5R) integral with a large-diameter piston (5P) reciprocably included in a large-diameter cylinder (5) attached integrally to a ram (3) to a fixing unit (9), connecting one end of a small-diameter piston rod (7R) integral with a small-diameter piston (7P) reciprocably included in a small-diameter cylinder (7) integral with the large-diameter cylinder to a moving member (17) moved by a motor driving, integrally moving the small-diameter cylinder and the small-diameter piston and communicating a first compartment (5A) and a second compartment (5B) of the large-diameter cylinder divided by the large-diameter piston with each other, moving the ram integrally with the small-diameter piston rod moved by the moving member, and communicating the small-diameter cylinder with the large-diameter cylinder, thereby moving the large-diameter cylinder with a strong force by a working fluid supplied from the small-diameter cylinder.

Abstract: A die body includes a die hole for punching a work. A core, including a discharge hole, which is in communication with the die hole, is provided in the die body. The core is provided with a plurality of fluid injection ports through which fluid is injected downward of the discharge hole. The die body is provided with inflow ports through which compressed fluid flows into the fluid injection ports. The core is made of resin. The discharge hole is tapered toward its upper side. An outer peripheral surface of the die body is provided with a peripheral groove which is in communication with the inflow ports.

Abstract: In a cutting-off method, when a workpiece is to be cut off by use of an endless band saw blade suspended between a driving wheel and a driven wheel, the workpiece is cut off by imparting to the driving wheel a forced oscillation so that a phase of an oscillation of the driving wheel along its rotational direction is substantially inverted with respect to a phase of an oscillation of the driven wheel along its rotational direction. In addition, pulses can be applied to a driving motor for rotationally driving the driving wheel in order to cause the driving wheel to oscillate along its rotational direction.

Abstract: A servo drive system of a press machine has a pair of servo motors which can generate necessary ram pressure by compositing and using a torque based on the same speed-torque characteristics. The servo motors are symmetric with each other in a mirror image manner. The servo motors are opposed to each other at opposite ends of an operation shaft which vertically moves a ram. The servo motors are integrally operated, thereby directly driving the operation shaft.

Abstract: A method of cutting a workpiece using an endless band saw blade and a band saw machine are provided. The method includes suspending the endless band saw blade between a driving wheel and a driven wheel such that the workpiece may be cut by the endless band saw blade, applying at least a first pulse and a second pulse to a first motor rotating the driving wheel and a second motor rotating the driven wheel, respectively, wherein the pulses have phases opposite to each other, and cutting the workpiece. The band saw machine includes an endless band saw blade suspended between a driving wheel having a first motor and a driven wheel having a second motor. The band saw machine further includes a pulse applying module that applies at least a first pulse and a second pulse to the first motor and the second motor, respectively, wherein the pulses have phases opposite to each.

Abstract: A punch tool includes a casing (17); a plurality of small-diameter punches (23) vertically movable and circularly arranged in the casing; a plurality of large-diameter punches (27) vertically movable and circularly arranged in the casing; a punch driver (73) provided to be vertically movable and relatively rotatable on an upper portion of the casing; and a striker (87) provided on the punch driver to be capable of striking the respective punches. Since stripper springs (51) corresponding to the respective small-diameter punches are provided. Since the respective large-diameter punches are arranged between the small-diameter punches, the stripper springs for the small-diameter punches on both sides of the large-diameter punch serve as stripper springs of the large-diameter punch.

Abstract: A punch press has a punch supporting member (22) for supporting a plurality of punches (26) and a die supporting member (24) for supporting a plurality of dies (28), wherein identification media (34, 36) representing a punch and a die identification information for identifying each tool are attached to each punch and die, respectively. The punch press comprises a punch identification medium reader (38) for reading out a punch identification information from the punch identification medium (34) attached to said punch; a die identification medium reader (40) for reading out a die identification information from the die identification medium (36) attached to said die; and a comparator (68) for comparing a punch identification information from said punch identification medium reader and a die identification information from said die identification medium reader with each other.

Abstract: A press machine includes: an electric motor (19) for raising and lowering a slide (11) by rotating a crank shaft (13); motion datum receiving means (29) through which, by an input operation, an operator inputs a motion datum including, as input items, height positions at which the slide (11) starts and ends an oscillation process, a speed at which the slide (11) carries out the oscillation process, an angle at which the crank shaft (13) is rotated in a direction during a drive-in operation, and an angle at which the crank shaft (13) is rotated in the other direction during a return operation; motion pattern generating means (63) for generating a motion pattern of the slide (11) on the basis of the motion datum inputted through the motion datum receiving means (29); and motor controlling means (73) for controlling the electric motor (19) on the basis of the motion pattern generated by the generating means (63).

Abstract: An upper tool device includes: a punch body having a punch blade at a lower end of the punch body; a punch guide into which the punch body is fitted so as to be movable in vertical direction; an adjustment screw member provided above the punch guide, the adjustment screw member screwed with a screw formed on the punch body; a stripper unit including an urging unit urging the punch body in an upward direction; and a retainer collar including a stopper piece having a tip end disengageably engaged with a stopper formed on the punch body. In the device, the stripper unit is detachably provided in the upper tool device, and the retainer collar is provided between the punch guide and the stripper unit in a manner such that the retainer collar can be relatively rotated against the stripper unit.

Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade (7) provided on the band-saw machine (1) in a direction of a workpiece by a band-saw blade guiding apparatus (13,15); and applying vibrations to the band-saw blade in a cutting direction to the workpiece so as to perform cutting of the workpiece by a vibration applying unit (19A,19B) provided on the band-saw blade guiding apparatus (13,15).

Abstract: Data for a 3D sheet metal part model is stored in a file. The stored data includes features of the part and manufacturing information. When different manufacturing processes are used, different geometry can be created. The file can store multiple processes for manufacturing the part and the geometry associated with each process. Thus, when manufacturing the part, the user can view information for multiple stored processes because all of the information is stored together. In addition, both 2D and 3D data is stored for the part.

Abstract: Concave/convex portions are consecutively formed on a back of a band saw blade. The concave/convex portions include concave portions engageable with and disengageable from a backup guide of a band saw guide unit, and convex portions adjacent to the concave portions. A length of each of the concave/convex portions is configured to be equal to or smaller than four times a maximum pitch of a tooth top of each tooth.

Abstract: Provided is a punch tool which enables improvement in accuracy of processing a work by suppressing rattling between a punch body and a punch guide and eliminating almost all steps or the like in a punched surface (cut surface) of the work. A punch tool includes a cylindrical punch guide; a punch body movably provided in the vertical directions in the punch guide; a punch head provided at an upper end of the punch body; a stripper spring provided on a lower side of the punch head; and a plurality of rotation control means including key grooves and formed so as to vertically extend in the punch guide or the punch body and keys and which are provided in the punch body or the punch guide and are movably fitted in the vertical directions to the key grooves.

Abstract: A tapping method for performing a tapping process in a punch press includes engaging a front end of a tap provided at a tapping tool attached to a rotating mold indexing device rotatably provided at the punch press with a prepared hole formed in a workpiece. When the front end of the tap is engaged with the prepared hole, a control motor of the rotating mold indexing device is rotated positively to rotate the tap positively. When it is detected that the control motor of the rotating mold indexing device has rotated a determined number of times, positive rotation of the control motor is stopped and the motor is rotated reversely, thereby to detach the tap from the prepared hole of the workpiece.

Abstract: A chip removing device, in which a pair of brush support bodies include brushes 57 that can come into contact with both side surfaces of a band saw blade 23U, a rotation direction on a side where the pair of brushes come into contact with the band saw blade is inclined in a forward and downward direction with respect to a running direction of the band saw blade, the brush support body is provided such that it can rock in a direction approaching the band saw blade and in a direction separating away from the band saw blade, the chip removing device includes a biasing unit that can bias the brush support body in the direction approaching the band saw blade and in the direction separating away from the band saw blade, and the brush is rotated from the blade root side to the blade tip side of the band saw blade, thereby removing the chips.

Abstract: In a bending apparatus which moves one of upper and lower tables (9, 10), and performs bending on a workpiece (W) by tools (P, D) attached to the upper and lower tables (9, 10), a tool group including a plurality of split tools is transferred to the upper and lower table (9, 10), a plurality of process stations are formed by splitting the transferred tool into a plurality of tool groups based on automatically or manually determined tool-layout information, and then bending is carried out.

Abstract: An outsourcing service center (7) discloses information obtained through outsourcing services for a first sheet metal processing factory (3) to promote sales. A first ordering customer (5) requests a first sheet metal processing factory (3) to make an estimate for manufacturing a product. The first sheet metal processing factory (3) requests an outsourcing center (7) to perform the work of making the estimate. The outsourcing center (7) logs in to a computer (9) of the first sheet metal processing factory via a computer (15) of the outsourcing center, and, by remote control, works together with the first sheet metal processing factory to perform outsourcing services such as making an estimate and creating NC process data. The processes of these remotely performed services are stored in memory constituting know-how and are then disclosed on a Web page. In this way, examples of previous work successes are introduced and thereby used for promoting CAD/CAM software used in the work processes.

Abstract: An apparatus prepares data for manufacturing a product or a part with a pre-determined shape by using a bending press provided with detachable tools. The apparatus includes a computer memory that stores bending order information for manufacturing the product or the part. The bending order information is obtained after successfully completing bending operations and is associated with the product or the part.

Abstract: A method for processing sheet metal includes processing and forming a sample and a blank on a work while leaving a microjoint part in a blanking process. The method also includes detecting at least one of a plate thickness of the work in an optional position and a spring-back amount of the sample during bending. Information of at least one of the plate thickness and the spring-back amount is transmitted to a controller of a bending machine in a bending process after the blanking process. Bending is performed by calculating a ram control value in bending using data of at least one of the transmitted plate thickness and the spring-back amount.

Abstract: A sheet metal factory processing system includes a production management apparatus which generates a processing schedule based on a manufacturing designation. The processing schedule is managed in each unit of material sheets. The sheet metal factory processing system also includes a sheet metal factory processing installation which is mutually connected to the production management apparatus through a communication network to execute the processing schedule received from the production management apparatus.