MITSUI HIGH-TEC, INC. Patent applications |
Patent application number | Title | Published |
20160134179 | METHOD OF MANUFACTURING ROTOR - There is provided a method of manufacturing a rotor that includes a permanent magnet inserted into a magnet-insert hole formed in a rotor core, a positioning member which is inserted into the magnet-insert hole and positions the permanent magnet with respect to the rotor core, and a resin material for fixing the permanent magnet to the magnet-insert hole by filling the magnet-insert hole with the resin material. In the method, a mold unit is provided above or below the rotor core, and another positioning member used for manufacturing another rotor is molded using the mold unit while filling the magnet-insert hole with the resin material. | 05-12-2016 |
20160118321 | LEAD FRAME AND MANUFACTURING METHOD OF LEAD FRAME - A lead frame includes a lead frame body processed in a predetermined shape, and including a notched part provided at an end of the lead frame body, the notched part being used as a starting point of tape-removing, a resin leakproof tape stuck on a back surface of the lead frame body, and a region of a periphery of the notched part in the back surface of the lead frame body, the region being reduced in a strength of bonding between the resin leakproof tape and the lead frame body is reduced relative to other region. | 04-28-2016 |
20160099615 | LAMINATED IRON CORE AND MANUFACTURING METHOD OF LAMINATED IRON CORE - A laminated iron core includes laminated iron core pieces, in which coupling parts are formed so as to communicate in a lamination direction of the laminated iron core pieces, and the coupling parts are filled with resins. The laminated iron core satisfies the following formula: (T×S)/η>{(4×E×δ×w×t | 04-07-2016 |
20160094111 | METHOD AND APPARATUS FOR MANUFACTURING LAMINATED CORES - At the time of manufacturing both a laminated rotor core | 03-31-2016 |
20160065040 | METHOD AND APPARATUS FOR MANUFACTURING LAMINATED IRON CORE - A method of manufacturing a laminated iron core includes extruding resins from a plurality of plungers toward a plurality of through holes extending from an upper surface to a lower surface of a laminated body formed of a plurality of electromagnetic steel plates to fill the plurality of through holes with the resins. The plurality of plungers are mutually independent and an extrusion amount of the resin is controlled for each plunger. | 03-03-2016 |
20160056694 | RESIN SEALING METHOD OF MOTOR CORE AND APPARATUS USED FOR RESIN SEALING METHOD OF MOTOR CORE - Provided is a resin sealing method of a motor core having a rotor core and a stator core formed in such a way that a plurality of iron core pieces is laminated. The resin sealing method includes pressing the rotor core and the stator core from a direction of lamination by using a set of an upper die and a lower die, then extruding a resin stored in a resin reservoir pot provided in one or both of the upper die and the lower die by using a plunger and allowing a magnet-insert hole formed in the direction of lamination of the rotor core and a connection hole formed in the direction of lamination of the stator core to be filled with the resin and harden the resin. | 02-25-2016 |
20160023447 | MANUFACTURING METHOD FOR LAMINATED IRON CORE - A manufacturing method for laminated iron cores includes processing a metal sheet to form product sheets, in each of which iron core pieces are arranged inside an outer frame piece and the iron core pieces are connected to the outer frame piece in such a way that outer peripheral sides of the iron core pieces are connected to nearest parts of the outer frame piece through bridge pieces, laminating the product sheets and temporarily fixing the product sheets adjacent to each other in a vertical direction together to form a sheets laminated body including iron core pieces laminated parts and bridge pieces laminated parts, sealing the iron core pieces laminated parts by a resin while being pressurized to form pre-formed laminated iron cores, and separating the bridge pieces laminated parts from the pre-formed laminated iron cores to form the laminated iron cores which are individually separated. | 01-28-2016 |
20150372572 | METHOD FOR MANUFACTURING LAMINATED IRON CORE - In a method for manufacturing a laminated iron core from a thin sheet, the method includes coining the thin sheet from above to form a thinned bridge portion on an outer peripheral portion of an iron core piece, blanking the iron core piece downwardly from the thin sheet using a set of an outer-shape blanking punch and a die after forming the bridge portion, wherein the outer-shape blanking punch includes a projection portion fitted into the bridge portion when blanking, and laminating the iron core piece on another iron core piece to manufacture the laminated iron core. | 12-24-2015 |
20150372571 | METHOD FOR MANUFACTURING LAMINATED IRON CORE - In a method for manufacturing a laminated iron core from a thin sheet, the method includes coining the thin sheet from below to form a thinned bridge portion on an outer peripheral portion of an iron core piece, blanking the iron core piece from the thin sheet from above or below after forming the bridge portion, and laminating the iron core piece on another iron core piece to manufacture the laminated iron core. | 12-24-2015 |
20150325366 | METHOD AND APPARATUS OF MANUFACTURING LAMINATED IRON CORE - A method of manufacturing a laminated iron core includes performing at least two kinds of selectively-actuated punching processes by actuating respective punching units to form a plurality of iron core pieces, each of the punching units being switchable between an active state or a non-active state, and caulking and laminating the plurality of iron core pieces to manufacture the laminated iron core. The selectively-actuated punching processes are performed in one operation by selectively actuating each of the punching units between the active state and the non-active state. | 11-12-2015 |
20150280252 | APPARATUS AND METHOD FOR MANUFACTURING THIN UNEVEN MEMBER - There is provided an apparatus for manufacturing a thin uneven member. The apparatus includes a lower die fixed to a press bed, an upper die fixed to a ram and disposed opposed to the lower die, and a pressure-drive unit which presses the ram using a servo motor as a power source, the servo motor being fixed to a first support member. The pressure-drive unit includes a motion converting mechanism which converts a rotation of the servo motor to a linear motion of a lifting member, and a cylinder block connected and fixed to the first support member and including first and second pistons arranged in series vertically, wherein the first piston is connected to the lifting member through a second support member, and the second piston, larger in diameter than the first piston, presses the ram. | 10-01-2015 |
20150270762 | PRODUCTION METHOD FOR LAMINATED IRON CORE - A production method for the laminated iron core includes a first process that segment iron core pieces which respectively have circular arc angles obtained by dividing 360° as an angle of circumference into m are separated from a belt shaped iron core material and mounted on a mount base, the segment iron core pieces are carried to a laminating position of a rotary laminating mechanism by a pusher and the rotary laminating mechanism including the carried segment iron core piece therein is rotated by 360°/m and a second process that the first process is repeated to form an annularly connected iron core piece in which the segment iron core pieces are annularly arranged. The second process is repeated to form a caulked and laminated iron core having a prescribed thickness. During the second process, the segment iron core pieces are caulked and laminated in the rotary laminating mechanism. | 09-24-2015 |
20150256036 | LAMINATED IRON CORE AND MANUFACTURING METHOD FOR LAMINATED IRON CORE - There is provided a laminated iron core including a plurality of piled iron core pieces, each piled iron core pieces being blanked from at least two piled sheet materials and sequentially laminated on other piled iron core pieces, wherein the piled iron core pieces adjacent in a direction of lamination are interlocked together by a plurality of caulking parts provided in each piled iron core pieces. Each of the plurality of caulking parts includes a caulking protrusion formed in one side and a caulking fitting groove formed in the other side to which the caulking protrusion is fitted, and the caulking protrusion is allowed to protrude to the caulking fitting groove of the piled iron core pieces adjacent thereto in the direction of lamination, and a width of the caulking protrusion is larger than an inner width of the caulking fitting groove. | 09-10-2015 |
20150244244 | METHOD OF PUNCHING CORE PIECE AND STACKED CORE - Disclosed is a method of punching a core piece having a bridge formed between a radially-outer end of a magnet insertion hole and an outer region of the core piece. The method includes punching out the magnet insertion hole, forming a through hole that defines a radially-outer contour of the bridge, and blanking the core piece in an exterior shape while avoiding an edge of the punch from coinciding with the radially-outer contour of the bridge. | 08-27-2015 |
20150187492 | BLANKING DIE APPARATUS AND METHOD FOR MANUFACTURING LAMINATED IRON CORE - A blanking die apparatus includes a lower die in which a plurality of working stations are arranged, and an upper the which moves upward and downward with respect to the lower die. A progressively fed sheet is sequentially blanked or stamped out respectively in the working stations to form iron core pieces, and then to laminate the iron core pieces to form a laminated iron core. The lower die includes a lifter part which lifts the sheet from the lower die when the sheet is progressively fed. The lifter part first lifters installed in an outer peripheral area in each of the working stations, and second lifters installed on an upper surface of a blank die which has a blanking hole formed for blanking the iron core pieces in an external form, or on an upper surface of a blank die holder. | 07-02-2015 |
20150158072 | DIE APPARATUS AND CONTROL METHOD - A die apparatus includes a tip end part blanking punch which forms a tip end configuration of a belt-shaped sheet through a punch holding unit in an upper die. The punch holding unit includes a punch plate which holds the tip end part blanking punch, a punch plate moving mechanism which is lowered together with the upper die in a state where the punch plate is separated from the upper die when the tip end configuration of the belt-shaped sheet is formed, and holds the punch plate in a state where the punch plate is allowed to come near to the upper die when the punch plate is lifted, and an actuating mechanism which operates the punch plate moving mechanism in cooperation with a blanking or stamping operation of the upper die only when the tip end configuration of the belt-shaped sheet is formed. | 06-11-2015 |
20150121686 | LAMINATED IRON CORE MANUFACTURING METHOD AND BLANKING DIE APPARATUS - A laminated iron core manufacturing method in a blanking die apparatus having multiple machining stations is provided. The method includes feeding a belt-shaped workpiece progressively in a longitudinal direction in the blanking die apparatus, operating cutting tools provided in the respective machining stations simultaneously to perform predetermined blanking operations on the progressively fed workpiece and finally perform a contour blanking operation on the workpiece so as to form core pieces, and laminating the core pieces within or outside the blanking die apparatus to thereby manufacture a laminated iron core. An auxiliary cutting tool is operated to form a disposal hole by partly blanking a scrap forming area of the workpiece simultaneously with the operations of the cutting tools of the multiple machining stations, to thereby secure a load balance of the blanking die apparatus in the feeding direction. | 05-07-2015 |
20150097462 | LAMINATED CORE AND METHOD FOR MANUFACTURING THE SAME - A laminated core | 04-09-2015 |
20150075340 | METHOD OF PRODUCING IRON CORE - An iron-core producing method is provided that blanks iron cores from an iron strip by guiding the iron strip sequentially through an iron core-producing apparatus having a plurality of workstations. The method includes guiding, by a guide, the iron strip to a first workstation having a punch that intrudes into caulking portion-forming holes, and simultaneously forming, by the first workstation, first plural sets of caulking portions at a predetermined pitch in the iron strip. The method also includes guiding the iron strip from the first workstation to a second workstation within the iron-core producing apparatus, and forming, by the second workstation, a first iron core from the iron strip by blanking, such that tooth portions of the first iron core are disposed at lower sides of respective yoke portions. | 03-19-2015 |
20150061445 | ROTOR HAVING PERMANENT MAGNET AND METHOD OF MANUFACTURING THE SAME - A rotor having permanent magnets | 03-05-2015 |
20150054196 | METHOD FOR MANUFACTURING LAMINATED ROTOR CORE - A method for manufacturing a laminated rotor core comprises a first step of positioning and mounting a laminated core body | 02-26-2015 |
20150020375 | METHOD FOR MANUFACTURING BAND-SHAPED STATOR CORE SHEETS AND DIE APPARATUS USED THEREFOR - Provided are a method for manufacturing band-shaped stator core sheets, capable of efficiently separating the band-shaped stator core sheets having engaged magnetic pole pieces, and a die apparatus used therefor. | 01-22-2015 |
20140317908 | METHOD FOR MANUFACTURING LAMINATED IRON CORE AND SHAPE OF SCRAP PRODUCED THEREBY - A method for manufacturing a laminated iron core by press punching a thin strip material to manufacture a motor core, comprising, before punching out a scrap | 10-30-2014 |
20140265718 | ROTOR CORE AND METHOD OF MANUFACTURING THE SAME - A method of manufacturing a rotor core includes a first process of punching out punched holes | 09-18-2014 |
20140231003 | MANUFACTURING METHOD FOR LAMINATED CORE AND MANUFACTURING APPARATUS THEREFOR - A laminated core manufacturing method for performing rotational lamination by conveying a band-shaped material to be stamped | 08-21-2014 |
20140230236 | METHOD FOR PRODUCING ROTOR LAMINATED CORE - There is provided a method for producing a rotor laminated core by laminating circular core pieces. The method determines a first blanking area, a second blanking area and a third blanking area in the magnetic steel board, wherein the first blanking area defines a shape of the core piece, the second blanking area defines a shape of a magnet-insertion hole, and the third blanking area defines a shape of an arbitrary part in the magnetic steel board. The method also forms a temporary aperture in the second blanking area, forms a thinning part which extends from the temporary aperture to the third blanking area, and blanks the first blanking area, the second blanking area and the third blanking area, thereby producing each circular core piece including the thinning part and magnet-insertion holes formed in a circumferential direction. | 08-21-2014 |
20140196938 | LEAD FRAME - A lead frame includes a plurality of unit lead frames arranged in a matrix. Leads of adjacent ones of the unit lead frames are connected via a connecting bar, in which a longitudinal connecting bar and a transverse connecting bar are crossed at a crossing part. The lead frame further includes a dicing part including the connecting bar and a part of the leads, to be cut along a dicing line, a half-etching part formed along the dicing part, and being smaller in width than the dicing part, and a strength retention part formed in the half-etching part and extended from the crossing part of the connecting bar at least to an end lead located closest to the crossing part among the leads of the unit lead frame adjacent to the crossing part. | 07-17-2014 |
20140196276 | METHOD OF MANUFACTURING LAMINATED ROTOR CORE - There is provided a method of manufacturing a laminated rotor core, including: a mounting step of placing a core body on a carrier tray, the core body having a plurality of magnet insertion holes provided around the shaft hole, the carrier tray having a mount plate and a columnar guide member standing on a front surface of the mount plate | 07-17-2014 |
20140192506 | LEAD FRAME - A lead frame includes adjacent die pads which lie adjacent to each other; grounding leads extended from the adjacent die pads; a connecting bar by which the grounding leads extended from the adjacent die pads are interconnected. The grounding leads and the connecting bar are formed to be thinner at one surface than a maximum thickness of leads of the lead frame, the grounding leads extended from the adjacent die pads are aligned on a common axis while providing the connecting bar between the grounding leads, and a support projection is provided at the one surface on the connecting bar in the common axis. | 07-10-2014 |
20140159221 | LEAD FRAME, METHOD FOR MANUFACTURING LEAD FRAME AND SEMICONDUCTOR DEVICE USING SAME - Provided is a lead frame by which a die pad can be easily exposed when the lead frame is used for a semiconductor device. The lead frame has a die pad with an upper surface on which a semiconductor element is mounted. The lead frame is used for the semiconductor device with the exposed surface of the die pad being exposed from a sealing resin. A downwardly-projecting first metal burr is formed along the peripheral portion of the exposed surface of the die pad and heads of the first metal burr are flat. | 06-12-2014 |
20140151926 | METHOD OF RESIN SEALING PERMANENT MAGNETS IN LAMINATED ROTOR CORE - A laminated rotor core ( | 06-05-2014 |
20140131919 | METHOD FOR MANUFACTURING LAMINATED IRON CORE - A method for manufacturing a laminated iron core is provided. A laminated iron core body including a permanent magnet inserted into a magnet-insert hole is arranged between a molding die and a holding die. A cull plate is arranged between the molding die and the laminated iron core body. The cull plate has a groove shaped runner directed toward the magnet-insert hole from a resin reservoir and provided with a gate hole communicating with the magnet-insert hole, and a through hole which vertically passes through the cull plate is formed in the runner of the cull plate at a different position from a position of the gate hole. After the magnet-insert hole is filled with the mold resin a resin residue remaining in the cull plate is pushed off and removed from the gate hole and the through hole. | 05-15-2014 |
20140124980 | METHOD FOR MANUFACTURING LAMINATED CORE - A method for manufacturing a laminated core, in which while a laminated core body | 05-08-2014 |
20140124978 | METHOD OF RESIN-SEALING LAMINATED CORE - A method of resin-sealing for a laminated core includes the steps of: holding by sandwiching a core body | 05-08-2014 |
20140109391 | METHOD OF MANUFACTURING LAMINATED CORE HAVING PERMANENT MAGNETS SEALED WITH RESIN - A method of manufacturing a laminated core, having a laminated core body | 04-24-2014 |
20140103574 | METHOD OF RESIN-SEALING LAMINATED CORE - A method of resin-sealing a laminated core, including inserting permanent magnets | 04-17-2014 |
20130293060 | METHOD OF MANUFACTURING LAMINATED STATOR CORE AND LAMINATED STATOR CORE MANUFACTURED BY THE METHOD - A method of manufacturing a laminated stator core and a laminated stator core manufactured by the method, the method capable of forming a recess | 11-07-2013 |
20130249346 | LAMINATED IRON CORE AND METHOD FOR MANUFACTURING SAME - A laminated iron core and a method for manufacturing the same are provided to secure the lamination strength of the respective iron core pieces thereof, and to provide good magnetic efficiency and to reduce a loss. In a laminated iron core including a first caulking section formed in an area thereof having larger magnetic flux density than other area and a second caulking section formed in the other area, the engagement area A of the recessed sub-sections and projecting sub-sections of the first caulking sections of divided iron core pieces adjoining each other in the laminating direction is set smaller than the engagement area B of the recessed sub-sections and projecting sub-sections of the second caulking sections adjoining each other in the laminating direction. | 09-26-2013 |
20130234363 | METHOD OF MANUFACTURING LAMINATED CORE - In a method of manufacturing a laminated core, a laminated core body | 09-12-2013 |
20130228280 | METHOD OF MANUFACTURING LAMINATED CORE - A method of manufacturing a laminated core includes inserting permanent magnets | 09-05-2013 |
20130186158 | MANUFACTURING METHOD OF LAMINATED IRON CORE - There is provided a manufacturing method of a laminated iron core which is formed of a strip-shaped iron core piece. The strip-shaped iron core piece includes segment iron core pieces connected through a joint positioned in a radial outside, and each of the segment iron core pieces has an artuate shape. The joint by which adjacent segment iron core pieces are connected is folded and lateral ends of the adjacent segment iron core pieces are aligned. The strip-shaped iron core piece is spirally wound while circumferentially shifting mutual joints formed on vertical adjacent layers. Crush processing is performed for flattening a bulged portion in a thickness direction of the segment iron core pieces formed at a time of folding the joint, and the crush processing is performed simultaneously with a time when or after mutual segment iron core pieces arranged vertically are crimped and laminated. | 07-25-2013 |
20130127282 | METHOD OF RESIN SEALING PERMANENT MAGNET AND LAMINATED CORE MANUFACTURED BY THE METHOD - A method of resin sealing a permanent magnet in a magnet insertion portion of a laminated body, the body formed by laminating plural core sheets and including the plural portions formed around a shaft hole in a center thereof, the portion connected to an internal space via an opening. The method includes a first process of positioning a blocking member blocking the opening from a side of the space in a way that the member is vertically-placed in a lower die or an upper die, while the both dies hold the body from both sides in an axial direction and close the portion; and a second process of filling a resin extruded from a resin reservoir portion provided in the die or the die into the portion having the magnet inserted therein and having the opening closed by the member. | 05-23-2013 |
20130020010 | METHOD OF MANUFACTURING LAMINATED CORE SEGMENT - A method of manufacturing laminated core segments including: a process to blank and laminate, wherein the segment core sheets formed in the adjacent virtual lines are aligned so that directions of the segment core sheets alternate, each of the segment core sheets are blanked and formed by a die device, and the laminated core segments are formed by laminating the blanked segment core sheets in the die device; a process to eject, wherein each of the laminated core segments formed by blanking and laminating in each virtual line is ejected from the die device; and a process to identify a blanking position, wherein the distinguishing marks are provided for the laminated core segments to identify the virtual lines therefor. | 01-24-2013 |
20120324719 | METHOD OF MANUFACTURING LAMINATED CORE - A method including: a first step of preheating a rotor core body | 12-27-2012 |
20120305180 | METHOD OF RESIN SEALING PERMANENT MAGNETS IN LAMINATED ROTOR CORE - A laminated rotor core ( | 12-06-2012 |
20120285004 | ROTOR AND ELECTRIC VEHICLE - A rotor includes a rotor core fixedly attached to a rotational shaft and having a plurality of hole portions arranged in the circumferential direction, a magnet inserted into a plurality of hole portions each, and a filling portion injected into the hole portion. The filling portion is injected into the hole portion from a gate facing a central part in the width direction of the magnet in the opening of the hole portion. | 11-15-2012 |
20120227249 | METHOD AND APPARATUS FOR PRODUCING ROTOR - Provided is a method of producing a rotor in which the rotor is produced, the method including: crimping and stacking a plurality of core pieces through crimping connecting portions to form a rotor stacked core having a magnet-insertion hole; inserting a permanent-magnet pieces into the magnet-insertion hole; clamping the rotor stacked core between an upper die and a lower die; and filling a resin into the magnet-insertion hole from a resin reservoir pot which is formed in the upper die or the lower die. The resin is filled into the magnet-insertion hole while placing the crimping connecting portions at a center of the resin reservoir pot. | 09-13-2012 |
20120222289 | METHOD OF MANUFACTURING LAMINATED ROTOR CORE - A method of manufacturing a laminated rotor core, including inserting permanent magnets into magnet insertion portions of an iron core formed by laminating plural core sheets; and thereafter to fix the magnets, injecting resin into the magnet insertion portions from a resin reservoir part in a die holding the iron core; the method comprising: a first process of placing a segment dummy plate between the body and the die, the plate covering one or more of the plural magnet insertion portions individually and including a resin injection hole continuing thereto; a second process of injecting the resin from the resin reservoir part of the die through the resin injection hole of the plate to the corresponding magnet insertion portions; and a third process of detaching the dummy plate with excess resin after the resin injected to the magnet insertion portions is cured; and the method improving a resin sealing process. | 09-06-2012 |
20120091846 | ROTOR CORE - There is provided a rotor core which increases the quality and reliability thereof by preventing the occurrence of a core separation of the rotor core. There is provided a rotor core including a plurality of substantially cylindrical core blocks which are stacked on each other; and a plurality of magnets, characterized in that a plurality of magnet holes extending in an axial direction are provided in the plurality of core blocks so as to extend over the plurality of core blocks in that the plurality of magnets are accommodated in each of the plurality of magnet accommodation holes and fixed therein with a resin, and in that an axial position of core block boundary planes where the plurality of core blocks are brought into abutment with each other and an axial position of magnet boundary planes where the plurality of magnets are brought into abutment with each other differ from each other. | 04-19-2012 |
20120086302 | STATOR CORE AND METHOD OF MANUFACTURING SAME - A stator core | 04-12-2012 |
20120058313 | METHOD FOR MANUFACTURING LAMINATED CORE AND LAMINATED CORE - A method for manufacturing a laminated core is provided that makes positions of boundary parts of laminated blocks and improves an efficiency of a welding operation of the blocks. The above-described object is achieved by the method of manufacturing the laminated core | 03-08-2012 |
20120019093 | LAMINATED CORE - A laminated core | 01-26-2012 |
20110272793 | LEAD FRAME, SEMICONDUCTOR APPARATUS USING THIS LEAD FRAME, INTERMEDIATE PRODUCT THEREOF AND MANUFACTURING METHOD THEREOF - In a lead frame for a semiconductor apparatus 10, including plural terminals 13, one portions of the terminals 13 being sealed with a resin, a resin-sealed portion 16 of the terminal 13 has a polygonal columnar shape that is pentagonal or more or a deformed columnar shape having at least one notch or groove part extending vertically in a periphery. This resin-sealed portion 16 is formed by etching processing or press processing, and an exposed portion 18 of lower half of the terminal 13 is formed by the etching processing. | 11-10-2011 |
20110201159 | SEMICONDUCTOR PACKAGE AND MANUFACTURING METHOD THEREOF - A semiconductor package | 08-18-2011 |
20110179633 | METHOD OF RESIN SEALING PERMANENT MAGNETS IN LAMINATED ROTOR CORE - A method comprising: a first process of placing a laminated rotor core in a preheating device to preheat the laminated core; a second process of removing the preheated laminated core from the preheating device and disposing the laminated core between upper and lower dies of a resin sealing apparatus; a third process of pressing the laminated core by the upper and lower dies and liquefying resin material in resin reservoir pots by heating; and a fourth process of ejecting the liquefied resin material from the pots into the magnet insertion holes by plungers inserted and moving vertically in the pots and thermally curing the resin material. The method improves efficiency of resin sealing the permanent magnets in the laminated core. | 07-28-2011 |
20110154650 | METHOD FOR MANUFACTURING LAMINATED CORE - A method for manufacturing a laminated core, comprising: (1) blanking a rotor core sheet | 06-30-2011 |
20110127876 | LAMINATED STATOR CORE - A laminated stator core | 06-02-2011 |
20110115126 | METHOD OF RESIN SEALING PERMANENT MAGNETS IN LAMINATED ROTOR CORE - A laminated rotor core ( | 05-19-2011 |
20100327690 | LAMINATED STATOR CORE AND METHOD FOR MANUFACTURING THE SAME - A laminated stator core | 12-30-2010 |
20100270888 | LAMINATED CORE AND METHOD FOR MANUFACTURING THE SAME - A laminated core ( | 10-28-2010 |
20100218660 | DIE ASSEMBLY - With a view to preventing the generation of a punching failure or damage to punches or a die which is attributed to inclination or sideways movement of a press ram when a punching operation is performed, while preventing damage to the punches which is attributed to sideways movement or inclination of a stripper plate when no punching operation is performed and facilitating maintenance work such as adjustment of punches for registration with the stripper plate, there is provided a die assembly comprising an upper die including a punch and a lower die including a die wherein the upper die mounted on a press ram is connected to the lower die via a die-set guide so as to move backwards and forwards and a material for punching which is pressed against the lower die by a stripper plate is punched through reciprocation of the upper die relative to the lower die, the die assembly being characterized by comprising a guide rod made up of a lower rod which is fixedly placed on the stripper plate which guides the punch for engagement with the lower die and an upper rod which is placed removably on the stripper plate for engagement with the upper die, and in that when punching the material for punching, the upper rod is removed from the stripper plate so as to put the upper plate and the stripper plate in a disconnected state, so that the stripper plate is made free to move backwards and forwards relative to the lower die by the lower rod, while when the material for punching is not punched, the upper rod is attached to the stripper plate so as to put the upper die and the stripper plate in a connected state by the upper rod, so that the stripper plate is held on to the upper die. | 09-02-2010 |
20100213785 | LAMINATED CORE AND METHOD FOR MANUFACTURING THE SAME - A laminated core ( | 08-26-2010 |
20100090560 | LAMINATED CORE AND METHOD FOR MANUFACTURING THE SAME - A laminated core | 04-15-2010 |
20100083486 | METHOD OF RESIN SEALING PERMANENT MAGNETS IN LAMINATED ROTOR CORE - A method comprising: a first process of placing a laminated rotor core in a preheating device to preheat the laminated core; a second process of removing the preheated laminated core from the preheating device and disposing the laminated core between upper and lower dies of a resin sealing apparatus; a third process of pressing the laminated core by the upper and lower dies and liquefying resin material in resin reservoir pots by heating; and a fourth process of ejecting the liquefied resin material from the pots into the magnet insertion holes by plungers inserted and moving vertically in the pots and thermally curing the resin material. The method improves efficiency of resin sealing the permanent magnets in the laminated core. | 04-08-2010 |
20100043202 | METHOD OF PRODUCING VARIANT-SHAPED LAMINATED CORE AND VARIANT-SHAPED LAMINATED CORE PRODUCED BY SAME - A method of producing a laminated variant-shaped core | 02-25-2010 |
20090189309 | Method of resin sealing permanent magnets in laminated rotor core - A laminated rotor core ( | 07-30-2009 |
20090146519 | LAMINATED ROTOR CORE AND METHOD FOR MANUFACTURING THE SAME - A stamping step of forming a plurality of band-shaped core sheets ( | 06-11-2009 |
20090045689 | ROTOR AND METHOD OF MANUFACTURING THE SAME AND ELECTRIC VEHICLE - A rotor includes: a rotor core fixedly attached to a rotational shaft and having a magnet-inserted hole portion; a magnet inserted into the magnet-inserted hole portion; and a resin portion injected into the magnet-inserted hole portion. The rotor core is constructed by axially stacking a plurality of electromagnetic steel sheets. The electromagnetic steel sheets include: an electromagnetic steel sheet having the magnet-inserted hole portion and a weight-reducing-purpose hole portion provided separately from the magnet-inserted hole portion; and an electromagnetic steel sheet located on at least one axial end of the rotor core and having a portion covering the hole portion formed in the electromagnetic steel sheet. | 02-19-2009 |
20090026873 | LAMINATED CORE AND METHOD FOR MANUFACTURING THE SAME - A laminated core formed by reliably and firmly connecting laminated core segments ( | 01-29-2009 |
20080276446 | Method of Resin Sealing Permanent Magnets in Laminated Rotor Core - A method comprising: a first process of placing a laminated rotor core ( | 11-13-2008 |