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: The present invention relates to a press brake for bending metal sheets wherein: at least one stopper is disposed in each slot, each stopper comprising a first wedge having a first end secured to the first slot edge and a second end forming a first surface, and a second wedge having a first end secured to the second slot edge and a second end forming a first surface; and the first surface of at least one of the first and second wedges has a central portion that is domed or protuberant relative to the other portions of said surface so that the contact between the first and the second wedges is established essentially over said central portion.

Abstract: The present invention relates to a bending press or “press brake” for bending metal sheets, wherein the press includes at least one linking rod, which rod is oriented substantially perpendicularly to the movement direction, having one end that is fastened to the deformable portion of the second table and having its other end fastened to the housing.

Abstract: The present invention relates to a press brake for bending metal sheets, said press brake having an upper and a lower table, one of which has two slots, and having at least one pair of wedges, each wedge being disposed in a respective one of the two slots; and a primary control lever that is common to the wedges of the pair of wedges and that is suitable for moving said wedges of the pair of wedges in their respective slots.

Abstract: The present invention relates to a bending press comprising an upper table (130) and a lower table (132) placed edge-to-edge in the vertical direction, with one of the tables being movable relative to the other in the vertical direction, and with one of the tables presenting slots (134, 136) that are placed symmetrically relative to the midplane (P?P). Each slot has an open outside end and comprises a first slot portion (135a, 137a) and a second slot portion (135b, 137b) that is situated on the inside relative to the first slot portion and that is connected thereto, the shapes of said slot portions being such that the stiffness of the table portion situated between the slot and the tool fastener is greater between the first slot portion and the tool fastener than between the second slot portion and the tool fastener. At least one element (180) for adjusting the flexing of said table is disposed in the first slot portion.

Abstract: Provided are a slug float-up preventing method and a punch tool in performing a punching process on a plate-shaped workpiece (W) by cooperation between a punch tool (1) and a die tool (25), in which the workpiece is pressed onto an upper surface of the die tool by use of a plate holder (7) provided on the punch tool, part of the workpiece is punched out into a die hole (27) in the die tool by use of a punch blade (13) provided on the punch tool, a large amount of fluid is blown from a portion of a hole already processed on the workpiece toward a lower side of the punch blade (13) when the punch blade (13) is being lifted and is located above a lower surface of the workpiece and below an upper surface of the workpiece, and a small piece of slug located below the punch blade is dropped into the die hole (27).

Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade provided on the band-saw machine in a direction of a workpiece by a band-saw blade guiding apparatus; 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 provided on the band-saw blade guiding apparatus.

Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade provided on the band-saw machine in a direction of a workpiece by a band-saw blade guiding apparatus; 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 provided on the band-saw blade guiding apparatus.

Abstract: A stripper plate mounting apparatus is for mounting a stripper plate (21) in a detachable and replaceable manner on a front end portion of a punch guide (5) into which a punch (17) is fitted movably upward and downward. The apparatus includes: an adaptor (35), for holding the stripper plate (21), detachably provided in a front end portion of the punch guide (5); and lock mechanisms (43), capable of fixing the adaptor (35) to the punch guide (5), provided in multiple locations on the outer periphery of the front end portion thereof. The lock mechanisms (43) each include: a lock piece (53) which is always biased outward in a radial direction by biasing means, and which is engageable with, and detachable from, the lock part (41); and a lock-holding piece (63) for locking and holding the lock piece (53) to an inward position when the lock piece (53) is pressed and moved inward in the radial direction.

Abstract: A press apparatus includes an inputting device, that enables a user of the press apparatus to input working pattern data representing the workpiece, and a display device, that displays a working pattern of the workpiece based on the inputted working pattern data. A tool selecting device selects a plurality of tools required for working the workpiece in accordance with the working pattern data. A calculator calculates a transferring pitch of the workpiece in order for parts of the workpiece to be sequentially arranged in predetermined positions in a feeding direction of the press apparatus with respect to the plurality of tools selected by the tool selecting device. In this regard, the calculator also determines which tool is to be operated in association with the transferring pitch. The press includes a controller that controls the transferring pitch calculated by the calculator.

Abstract: A punch tool includes a casing; a plurality of small-diameter punches vertically movable and circularly arranged in the casing; a plurality of large-diameter punches vertically movable and circularly arranged in the casing; a punch driver provided to be vertically movable and relatively rotatable on an upper portion of the casing; and a striker provided on the punch driver to be capable of striking the respective punches. Stripper springs 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 biasing assembly for a punching device that includes a punch support member adapted to support a punch and including a head portion and a main portion extending from the head portion. The main portion has a recessed surface. A retaining member is coupled to the punch support member with the punch support member being slidable with respect to the retaining member. A coupling member is disposed between the main portion of the punch support member and the retaining member. A portion of the coupling member engages the recessed surface. A biasing member is supported between the head portion of the punch support member and the retaining member. The punch support member is movable between at least first and second positions with respect to the coupling member.

Abstract: A band saw machine which has an endless band saw blade hung around a driving wheel and a driven wheel rotatably supported by a saw blade housing that is capable of moving vertically. The band saw machine also includes a pair of guide posts for vertically guiding the saw blade housing between the driving wheel and the driven wheel, wherein an upper traveling part of the band saw blade is disposed at one side of the front and rear sides of the guide posts, and a lower traveling part of the band saw blade is disposed at the other side of the front and rear sides of the guide posts.

Abstract: A saw blade includes left and right set teeth which are set in a lateral direction, as viewed in a cuffing direction of cutting teeth. The left and right set teeth include dovetail shaped set teeth, each having a tooth tip formed into a dovetail shape gradually enlarged in the lateral direction, respectively; and a straight tooth, which is not set. The straight tooth includes a dovetail shaped straight tooth having a tooth tip formed into a dovetail shape gradually enlarged in the lateral direction. In the straight tooth, inclinations are formed on both of left and right ends at the tooth tip, which is formed into the dovetail shape gradually enlarged in the lateral direction.

Abstract: In a band saw machine in which a pair of guide posts for guiding a saw blade housing that rotatably supports a driving wheel and a driven wheel and can vertically move in the vertical direction are provided between the driving wheel and the driven wheel, an upper traveling part of a band saw blade is disposed in the rear of the guide posts and a lower traveling part of a band saw blade is disposed in front of the guide posts, when the band saw machine is viewed from the side, an intersection point between centers of the both wheels and the center line of the wheel width is almost equal to the width of the guide posts.

Abstract: An initial contractor (5) that receives a request from an ordering customer (3) to manufacture a product performs a process edition conference via an outsourcing service using a computer (11) of the initial contractor. The initial contractor (5) receives a request from an ordering customer (3) to manufacture a sheet metal product. For manufacturing the product, the initial contractor (5) performs a processing edition conference to decide the method for processing the product and to estimate the price required and the delivery schedule. In the performance of the processing edition conference, the initial contractor (5) requests the services of an outsourcing service center (7).

Abstract: A servo drive system of a press machine includes a ram, an operation shaft which vertically moves the ram, and a servo motor which operates as a power source of the ram and which generates ram pressure using a torque based on at least one speed-torque characteristic of the servo motor. The operation shaft is directly driven using the servo motor. The at least one speed-torque characteristic of the servo motor is set in a manner such that a motor torque of the servo motor at which a capacity of electric energy supplied by a servo amplifier is determined becomes the motor torque at which an optimal punching pattern of the ram is generated from a light load to a heavy load according to a type of workpiece to be worked by the press machine.

Abstract: A continuous working system of a press machine includes a ram, an operation shaft which vertically moves the ram, and a servo motor which operates as a power source of the ram and which generates ram pressure using a torque based on at least one speed-torque characteristic of a motor. The operation shaft is directly driven using the servo motor. The operation shaft is continuously reciprocated and turned through an angle range corresponding to a distance between a predetermined lower end position required for press working by the ram and an upper end position such that the ram vertically moves between these positions by the servo motor, thereby subjecting a work to a continuous press working. The upper end position is set to a position slightly below a medium height of the entire vertically possible stroke of the ram. The lower end position is set to a position slightly above a bottom dead center of the entire vertically possible stroke of the ram.

Abstract: A method for utilizing a bending machine die layout, the method including the steps of: designating a bending machine die layout; extracting a region, in the designated die layout, where a punch and a die face each other, as a virtual die stage; and assigning the extracted virtual die stage to each bend line using a sheet metal shape model of a working part.