公开(公告)号：JPH06276712A

公开(公告)日：1994-09-30

申请号：JP8549393

申请日：1993-03-19

Applicant: MITSUI HIGH TEC

Inventor： ISAYAMA MINAO ,  MOMII HIDETOSHI

IPC: H02K15/02 ,  H02K37/04

Abstract: PURPOSE:To provide the manufacture of a laminated product of a stator for a stepping motor by which the productivity of the laminated product of a stator for a stepping motor and the performance and the quality of a motor can be increased. CONSTITUTION:A necessary shaping work for forming an iron core piece 31 with a ring-like binder 36 for interconnecting the tip parts of each small tooth 35 of plural pole teeth 34 left is performed to form an arc-like half-punched part (Metal compositions make contact with each other in part) with a shaping base left in the end surface of the tip part of each small tooth 35. Further, after the cross-section of the tip part of each small tooth 35 formed by shaping work to remove a binder, the work of forming the end surface of the outer circumference of a yoke part 33 is performed to form the iron core piece of a single stator and at the same time the iron core piece is constituted by fixedly laminating by the necessary number of sheets or the necessary thickness in sequence.

公开(公告)号：JPH06269149A

公开(公告)日：1994-09-22

申请号：JP7878893

申请日：1993-03-11

Applicant: MITSUI HIGH TEC

Inventor： ISAYAMA MINAO

IPC: H02K15/02

Abstract: PURPOSE:To provide a manufacturing method for the core piece for a motor, wherein the inner cut surface of the core piece of a stator is relatively uniform, the magnetic characteristics are excellent and the manufacturing process is relatively easy. CONSTITUTION:A rotor core piece 14, wherein a plurality of pole teeth are formed around the core piece, and a starot core piece 20, wherein the inner diameter is slightly larger than the outer diameter of the rotor core piece 14 and has a plurality of pole teeth in which a plurality of small teeth are formed at the inner surface are provided, are sequentially molded from a continuous strip member 10 in the this manufacturing method for the core piece for a motor. After the rotor core piece 14 is punched, a shaving part is provided at the inner surface of the stator core piece 20, and circular semi-punching is performed. Thereafter, the small teeth are created by the punching at the inner side of the stator core piece and press machining including shaving.

公开(公告)号：JPH0538105A

公开(公告)日：1993-02-12

申请号：JP20987591

申请日：1991-07-26

Applicant: MITSUI HIGH TEC

Inventor： ISAYAMA MINAO

IPC: H02K15/02

Abstract: PURPOSE:To provide a laminated iron core where the inclination of an installation groove is small at approximately equal height, even if one uses an electromagnetic steel plate great in thickness deviation, by performing the divisional formation and assembling of a laminated magnetic pole iron core member and a laminated yoke iron core member continuously by press processing. CONSTITUTION:In case of making a magnetic pole iron piece, which has a total of twelve magnetic iron cores, and a yoke iron core, for the strip 10 of a silicon steel plate, first, eight square holes 13 are made intermittently between magnetic iron cores, and next twelve slots 17 are punched, and then the air gap between a rotor and a stator and four other gaps are punched. And similarly the formation of four gaps are performed at the positions different from the positions of the gap punching between the rotor and the stator and the gaps, and then a dividing line 41 is made between it and the outer yoke iron core piece 40, and first to third magnetic pole iron core pieces are punched in to a lower blanking die. Next, the yoke iron core piece 40 is cut off, and is punched into the lower blanking die, so that upper and lower magnetic iron pieces are bound.

公开(公告)号：JPS63272062A

公开(公告)日：1988-11-09

申请号：JP10749787

申请日：1987-04-30

Applicant: MITSUI HIGH TEC

Inventor： ISAYAMA MINAO ,  KITA MICHIAKI

IPC: H01L23/50

Abstract: PURPOSE:To avoid defects such as a short-circuit between inner leads or bonding wires and obtain a highly reliable semiconductor device by a method wherein some of the inner leads have smaller lead widths than the other inner leads and are extended closer to a die pad and have widened parts at their tips. CONSTITUTION:A die pad 2 on which a semiconductor element is mounted, a plurality of inner leads 4 whose tips are extended close to the die pad 2, outer leads extended outward from the inner leads 4 and tie-bars supporting the inner leads 4 and the outer leads are provided. In a lead frame like this, some 4b of the inner leads 4 have smaller lead widths t2 than the other inner leads 4a and are extended closer to the die pad 2 and have widened parts (f) at their tips. The inner leads 4b with the widened parts (f) at their tips and the inner leads 4a without the widened parts are, for instance, arranged alternately.

公开(公告)号：JP2004017055A

公开(公告)日：2004-01-22

申请号：JP2002171719

申请日：2002-06-12

Applicant: Mitsui High Tec Inc ,  株式会社三井ハイテック

Inventor： ISAYAMA MINAO

IPC: B21D28/02

Abstract: PROBLEM TO BE SOLVED: To provide a die apparatus, in which cracks or breaks are not generated in a die when a blanked piece is punched out from a plate to be blanked by advancing/retreating a punch into/from the inside of the die for external shape blanking and is successively laminated and caulked onto a piece previously laminated in the die.
SOLUTION: In the die apparatus, a blanked piece 1 is punched out from a plate to be blanked by advancing/retreating a punch 24 into/from the inside of a die 25 for external shape blanking and is successively laminated and caulked onto a piece 1a which is previously laminated in the die. Furthermore, the die apparatus is provided with a deaeration hole 27, leading to the outside, in the part of the die, into which the punch with the blanked piece advances within the range to its bottom dead point.
COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2001327129A

公开(公告)日：2001-11-22

申请号：JP2000145919

申请日：2000-05-18

Applicant: MITSUI HIGH TEC

Inventor： FUKUI ATSUSHI ,  ISAYAMA MINAO

IPC: H02K1/18 ,  H02K1/14 ,  H02K15/02

Abstract: PROBLEM TO BE SOLVED: To obtain a laminated core which is free from disturbance of a flow of a flux and has excellent characteristics by a method wherein, when the core is manufactured by punching out rotor core segments and stator core segments from the same metal sheet, pole teeth of coarsely punched stator core segments are extended stably into hollow parts formed by punching out rotor core segments by pressing, allowances for punching pole tooth tip ends, of which the inner formes of the stator core segments are composed, are secured sufficiently, punching can be practiced without trouble even if gaps between the stator core segments and the rotor core segments are small and a variation in unevenness of plate surfaces caused by pressing is small. SOLUTION: Rotor core segments are punched out from metal sheets and laminated. Pole teeth 7 of stator core segments are coarsely punched out from the metal sheets from which the rotor core segments are punched out beforehand. Pluralities of different positions of the respective pole teeth 7 are pressed to make the thicknesses 10 and 11 thin so as to extend toward the punched sides of the rotor core segments. Then pole tooth tip ends 8, of which the inner forms of the stator core segments are composed, are formed by punching, the outer formes of the stator core segments are formed by punching and the stator core segments are laminated.

公开(公告)号：JP2000201457A

公开(公告)日：2000-07-18

申请号：JP37732598

申请日：1998-12-30

Applicant: MITSUI HIGH TEC

Inventor： ISAYAMA MINAO ,  TORISU TOKUO

IPC: H02K15/02

Abstract: PROBLEM TO BE SOLVED: To reduce production cost mounting the engaging head part of a split pole piece on the head mounting part of an adjacent split pole piece to form a magnetic circuit and providing a pivoting recess and a pivoting protrusion, respectively, on the upper and lower surfaces at an engaging part. SOLUTION: A laminated core pole 10 for stator is formed by laminating first through third annular pole plates 11-13 of different shape. A first split pole piece 14 constituting the first annular pole plate 11 has T-shape as a whole and a first yoke part 17 is provided, at the opposite ends thereof, with first engaging head part 18 and first head mounting part 19. A magnetic circuit is formed by arranging a plurality of first split pole pieces 14 annularly and mounting the engaging head part 18 of the first split pole pieces 14 on an adjacent head mounting part 19.

公开(公告)号：JPH08205485A

公开(公告)日：1996-08-09

申请号：JP3146895

申请日：1995-01-26

Applicant: MITSUI HIGH TEC

Inventor： ISAYAMA MINAO

IPC: H02K1/12 ,  H02K1/16 ,  H02K1/18 ,  H02K15/02

Abstract: PURPOSE: To suppress stagnation of inner residual strain by fitting a protrusion in a recess at the laminated pole core part and welding the joint while pressing the fitted core part in the inside diametral direction thereby forming a stator. CONSTITUTION: The stator 11 for electric rotating machine comprises an annular laminated yoke core part 10, and a required number of laminated pole core parts 13 applied with a conductor coil 12. When a laminated yoke core 18 is bent annularly around a coupling piece 14 to form a laminated yoke core part 13, the nearly sectional fitting protrusion 20 of a pole core piece 19 constituting the laminated yoke core part 13 is fitted in a wedge-shaped fitting recess 15 formed at the end part of a partial yoke core piece 16 and enlarged radially by means of the partial fitting recesses 15a, 15b. Consequently, assembling work of stator using the laminated yoke core part and the laminated pole core part, as compositional members, can be simplified to enhance the workability significantly and the productivity can be enhanced by automating the assembling work.

公开(公告)号：JPH0824159B2

公开(公告)日：1996-03-06

申请号：JP10749787

申请日：1987-04-30

Applicant: MITSUI HIGH TEC

Inventor： ISAYAMA MINAO ,  KITA MICHIAKI

IPC: H01L23/50

公开(公告)号：JPH06284648A

公开(公告)日：1994-10-07

申请号：JP9094793

申请日：1993-03-24

Applicant: MITSUI HIGH TEC

Inventor： ISAYAMA MINAO

IPC: H02K1/18 ,  H02K15/02

Abstract: PURPOSE:To provide method and machine for producing a laminated core in which the core piece or the squeeze member is protected against abnormal abrasion or damage due to seizure and residual stress of the core piece is reduced significantly to enhance the motor characteristics. CONSTITUTION:In the method and machine for producing a laminated core through side pressure caulking where core pieces prepared through a predetermined profile machining are laminated sequentially by the side pressure of a squeeze member 23 arranged in a metal mold, waving irregularities 21 are formed on the end face of the core piece on the side pressure side and then side pressure caulking is performed through the use of frictional resistance between the protrusions on the side pressure side and the inner face of the squeeze member 23.