Patents by Inventor Toru Tokiwa
Toru Tokiwa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20080202306Abstract: 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).Type: ApplicationFiled: July 25, 2005Publication date: August 28, 2008Applicants: AMADA COMPANY, LIMITED, AMADA CUTTING CO., LTD.Inventors: Toru Tokiwa, Isomi Washio, Shoji Aihara, Minoru Gotoh
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Publication number: 20060144202Abstract: A band saw machine includes a driving wheel and a driven wheel around which an endless band saw blade is wound. At least one of the driving wheel and the driven wheel is directly connected to an output shaft of a control motor. The output shaft of the control motor is arranged in a cylindrical bearing unit installed on a motor base supporting the control motor. The driving wheel is rotatably supported by the bearing unit.Type: ApplicationFiled: March 4, 2004Publication date: July 6, 2006Inventors: Toru Tokiwa, Kinshiro Naito
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Patent number: 5626454Abstract: A bar storage apparatus comprises: a shelf frame (19) provided with a plurality of pallet accommodating shelves (17) each for movably accommodating a pallet (15) on which a plurality of bars are mounted; an elevator device (23) disposed on one side of the shelf frame so as to be movable up and down and provided with a traverser (21) for moving each pallet into and from each of the pallet accommodating shelves; and a bar supplying device (25) for supplying a bar, mounted on the pallet moved from the pallet accommodating shelf and further located at a predetermined position by the elevator device, to a bar processing machine (3). The bar storage apparatus can store a great number of bars of various kinds and various dimensions, select any required bars from a great number of bars, and supply the selected bars to a bar processing machine easily and quickly.Type: GrantFiled: June 7, 1995Date of Patent: May 6, 1997Assignee: Amada Company, LimitedInventors: Toru Tokiwa, Takayoshi Hasegawa
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Patent number: 5507613Abstract: A transfer device for transferring elongate bars with respect to a spatial storing system which includes a shelf frame provided with vertically arranged multiple shelves constituted of a plurality of supporting beams for carrying the bars, comprising: a movable beam (23) disposed above the shelf frame and extending in a longitudinal direction of the bars, the movable beam being movable in a direction perpendicular to the longitudinal direction of the elongate bars; a lifting beam (35) vertically movably mounted on the movable beam; and a plurality of lifting arms (33) attached to the lifting beam and extending, for carrying the bars, in the direction perpendicular to the longitudinal direction of the bars, the lifting arms being extrudable and recedable separately or simultaneously in a longitudinal direction thereof in relation to length of the bar to be carried.Type: GrantFiled: August 26, 1994Date of Patent: April 16, 1996Assignee: Amada Company, LimitedInventor: Toru Tokiwa
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Patent number: 5490752Abstract: A bar storage apparatus comprises: a shelf frame (19) provided with a plurality of pallet accommodating shelves (17) each for movably accommodating a pallet (15) on which a plurality of bars are mounted; an elevator device (23) disposed on one side of the shelf frame so as to be movable up and down and provided with a traverser (21) for moving each pallet into and from each of the pallet accommodating shelves; and a bar supplying device (25) for supplying a bar, mounted on the pallet moved from the pallet accommodating shelf and further located at a predetermined position by the elevator device, to a bar processing machine (3). The bar storage apparatus can store a great number of bars of various kinds and various dimensions, select any required bars from a great number of bars, and supply the selected bars to a bar processing machine easily and quickly.Type: GrantFiled: March 1, 1995Date of Patent: February 13, 1996Assignee: Amada Company, LimitedInventors: Toru Tokiwa, Takayoshi Hasegawa
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Patent number: 5451132Abstract: A bar transporting device for transporting bars into and out of a bar processing machine (63) which processes bars (B) of different shapes and dimensions. The bar transporting device (1) includes a shelf frame (7) provided with vertically arranged pallet shelves (5) onto which pallets (3) loaded with bars (B) are to be removably stored, a vertically movable elevating device (21) provided at one end of the shelf frame (7) and adapted to transport the pallets (3) into and out of the shelf frame (7) and transport the pallets (3) between the shelf frame (7) and a bar feeding position (71), and a bar forwarding device (77) for transporting the bars (B) between the pallet (3) removed from the shelf frame (7) and positioned at the bar feeding position (71) by the elevating device (21), and the bar processing machine (63).Type: GrantFiled: June 24, 1994Date of Patent: September 19, 1995Assignee: Amada Company, LimitedInventor: Toru Tokiwa
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Patent number: 5427490Abstract: A bar storage apparatus comprises: a shelf frame (19) provided with a plurality of pallet accommodating shelves (17) each for movably accommodating a pallet (15) on which a plurality of bars are mounted; an elevator device (23) disposed on one side of the shelf frame so as to be movable up and down and provided with a traverser (21) for moving each pallet into and from each of the pallet accommodating shelves; and a bar supplying device (25) for supplying a bar, mounted on the pallet moved from the pallet accommodating shelf and further located at a predetermined position by the elevator device, to a bar processing machine (3). The bar storage apparatus can store a great number of bars of various kinds and various dimensions, select any required bars from a great number of bars, and supply the selected bars to a bar processing machine easily and quickly.Type: GrantFiled: June 8, 1993Date of Patent: June 27, 1995Assignee: Amada Company, LimitedInventors: Toru Tokiwa, Takayoshi Hasegawa
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Patent number: 5366335Abstract: A transfer device for transferring elongate bars with respect to a spatial storing system which includes a frame provided with vertically arranged multiple shelves constituted of a plurality of supporting beams for carrying the bars, comprising: a movable beam (23) disposed above the shelf frame and extending in a longitudinal direction of the bars, the movable beam being movable in a direction perpendicular to the longitudinal direction of the bars; a lifting beam (35) vertically movably mounted movable beam; and a plurality of lifting arms (33) attached to the lifting beam and extending, for carrying the bars, in the direction perpendicular to the longitudinal direction of the bars, the lifting arms being extrudable and recedable separately or simultaneously in a longitudinal direction thereof in relation to length of the bar to be carried.Type: GrantFiled: October 6, 1992Date of Patent: November 22, 1994Assignee: Amada Company, LimitedInventor: Toru Tokiwa
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Patent number: 5148907Abstract: A cut section conveying device is provided for a cutting machine which includes: a conveyor frame positioned at the front side of the cutting machine; a carriage supported on the conveyor frame in a freely reciprocating manner in the longitudinal direction, approaching and withdrawing relative to the cutting position of the cutting machine; a movable vise body supported on the carriage in a manner allowing free movement in the lateral direction; a first clamp jaw and a second clamp jaw provided on the movable vise body for clamping the cut section; a reciprocating action device for moving the movable vise body in a reciprocating manner in the lateral direction relative to the carriage; and a lifting device for lifting up the clamp jaws so that the lower ends of the clamp jaws are raised to a position higher than a height of the cut section.Type: GrantFiled: December 17, 1990Date of Patent: September 22, 1992Assignee: Amada Company, LimitedInventor: Toru Tokiwa
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Patent number: 4805500Abstract: A horizontal bandsaw has a main vise positioned slightly to the rear of the cutting location for gripping the workpiece during cutting, a material feed vise positioned to the rear of the main vise for feeding material into the cutting location, and a front vise positioned to the front of the cutting location. The front vise can move to a position to the rear of the cutting location to retrieve a small remnant of uncut material. The three vises each have a movable and a fixed jaw. A lower limit guide is provided on the main vise movable jaw which adjusts the descent of the cutting tool to the width of the workpiece. The fixed jaws are provided with means located within the operating area of the jaws for a slight advance or retraction of the contact face, to firmly grip the workpiece or to retract the contact face so as to prevent frictional contact with the workpiece. The movable jaws have a hydraulic cylinder built into a sliding tube for providing reciprocating motion.Type: GrantFiled: June 27, 1986Date of Patent: February 21, 1989Assignee: Amada Company, LimitedInventors: Shuichi Saito, Hisao Kumazawa, Toru Tokiwa, Toshihisa Yoshishige
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Patent number: 4674374Abstract: A band saw machine is provided with a fixed and movable blade guide arm which are set apart by a distance which is proportional to the width of workpiece to be cut. A detector mounted on one of the guide arms senses the lateral deviation of the saw blade during cutting and a control circuit outputs a termination signal to shut down the machine when the deviation is larger than a desired maximum value. When a workpiece of a different width is to be cut the guide arms are reset apart by a distance proportional to the width of the new workpiece and a detector is provided which senses the change of distance between the guide arms and outputs a signal to a revising circuit. The revising circuit then revises the maximum value of deviation to be allowed based on the change of distance between the guide arms.Type: GrantFiled: June 25, 1985Date of Patent: June 23, 1987Assignee: Amada Company, LimitedInventors: Toru Sadahiro, Masayuki Taguchi, Toru Tokiwa, Takeshi Terajima
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Patent number: 4557168Abstract: A method for detecting the cutting resistance of a workpiece to a bandsaw blade comprises the steps of: magnifying movement of the bandsaw blade by a magnifying device in a direction normal to a running direction of the bandsaw blade; detecting the movement of the bandsaw blade by a sensor in the direction normal to the running direction of the bandsaw blade; and adjusting a force exerted by a feed speed of the bandsaw blade during a cutting operation in immediate response to momentary changes in the cutting resistance of the workpiece to the bandsaw blade. An apparatus for carrying out the method is also disclosed.Type: GrantFiled: March 28, 1983Date of Patent: December 10, 1985Assignee: Amada Company, LimitedInventor: Toru Tokiwa