Abstract: The manufacturing method of a motor core includes attaching an ID code to a stack of blanked members in which a magnet insertion hole to fill with a resin material is formed, the ID code containing information in accordance with a type of the stack, reading the information from the ID code which is attached to the stack, and setting a mold condition based on the information read from the ID code. The mold condition includes at least one type of condition including: the resin material to be injected to the magnet insertion hole, an injection amount of the resin material, and a discharge position of the resin material. A mold device is controlled to inject the resin material to the magnet insertion hole in accordance with the mold condition.

Abstract: A method for manufacturing a rotor iron core includes providing an iron core body including a magnet-insert hole, and a resin guide member including a wall body projected from a surface of the resin guide member, overlapping the iron core body with the resin guide member, the wall body being positioned inside the magnet-insert hole in which a permanent magnet is disposed in a state where the iron core body is overlapped with the resin guide member, and injecting a molten resin into the magnet-insert hole through at least one gate hole pierced in the resin guide member, a discharge port of the at least one gate hole being provided in lateral vicinity of the wall body.

Abstract: An apparatus for inserting a magnet into a rotor iron core includes a magnet inserting unit configured to insert a permanent magnet into a magnet-insert hole formed along a lamination direction of a rotor iron core body in which a plurality of iron core pieces are laminated, and a guide member to be attached to the magnet inserting unit, and arranged in a space formed between the magnet inserting unit and the rotor iron core body and configured to communicate the magnet-insert hole of the rotor iron core body to a supply part for the permanent magnet formed in the magnet inserting unit.

Abstract: The manufacturing method of a motor core includes attaching an ID code to a stack of blanked members in which a magnet insertion hole to fill with a resin material is formed, the ID code containing information in accordance with a type of the stack, reading the information from the ID code which is attached to the stack, and setting a mold condition based on the information read from the ID code. The mold condition includes at least one type of condition including: the resin material to be injected to the magnet insertion hole, an injection amount of the resin material, and a discharge position of the resin material. A mold device is controlled to inject the resin material to the magnet insertion hole in accordance with the mold condition.

Abstract: A method for manufacturing a laminate used for manufacturing a rotor is provided. The method includes: (a) stamping out a plurality of workpieces from a metal sheet wherein each of the workpieces has a temporarily-interlocking portion; and (b) obtaining a laminate including the workpieces integrated together by the temporarily-interlocking portion, wherein each of the workpieces further has a shaft hole, a magnet insertion hole, and a weight-reducing hole formed between the shaft hole and the magnet insertion hole, and the temporarily-interlocking portion is provided to the weight-reducing hole.

Abstract: A manufacturing method of a laminated core includes holding a laminated core body mounted on a cull plate, injecting a resin to a magnet-insert hole from a resin reservoir part provided in a lower die through the cull plate, then ejecting the laminated core body and the cull plate and separating the cull plate from the laminated core body. The cull plate includes a through hole which forms at least a part of a flow path extended from the resin reservoir part to an upper surface of the cull plate. The through hole of the cull plate includes a tapered portion and a straight pipe portion being adjacent to the tapered portion. The tapered portion has an inner diameter gradually decreasing toward the upper surface of the cull plate, and the straight pipe portion has a constant inner diameter in a height direction.

Abstract: This disclosure relates to a method for manufacturing a laminate used for manufacturing a laminated core including a circumferential yoke part and a plurality of magnetic pole parts radially extending from the yoke part. This method includes: feeding a metal sheet drawn from a roll thereof to a progressive die; stamping out a plurality of workpieces from the metal sheet in the progressive die, wherein each of the workpiece comprises a temporarily-interlocking portion between adjacent magnetic pole portions; and stacking the workpieces to integrate these workpieces together by the temporarily-interlocking portion to obtain the laminate.

Abstract: A method for manufacturing a laminated rotor core comprises a first step of positioning and mounting a laminated core body 14 on a mounting table 17 of a carrying tray 16, a second step of positioning and arranging the laminated core body 14 mounted on a mounting table 17 on a lower die 28, the laminated core body 14 having permanent magnets 15 inserted into respective magnet insertion holes 11 and 12, and clamping the laminated core body 14 mounted on the mounting table 17 by an upper die 29 and a lower die 28, and a third step of pushing resin out of resin reservoir pots 42 provided in the lower die 28 and filling the respective corresponding magnet insertion holes 11 and 12 of the laminated core body 14 with the resin through resin passages 43 formed in the mounting table 17.

Abstract: A method of resin-sealing a laminated core, including inserting permanent magnets 24 into magnet insertion holes 18 of a core body 15, pressing the body 15 with upper and lower dies 11, 12, and injecting resin 29 to the holes 18 from a resin reservoir 17 of the die 11 or 12 via a runner 19 in a removable cull plate 14, one end of the runner 19 having plural resin injection holes 33, 34 per hole 18. The resin 29 presses the magnets 24 in the holes 18 to one sides in a radial direction of the holes 18. Thereby, resin-sealing is performed using the plate 14 and the magnets 24 are arranged in radially outward or inward sides even with narrow gaps between the magnets 24 and the holes 18 or without resin injection holes in centers in a width direction of the holes 18.

Abstract: A rotor having permanent magnets 10 includes: a laminated core body 13 having a shaft hole 12 in the center thereof and magnet insertion holes 15 around the shaft hole 12; permanent magnets 16 disposed in the respective magnet insertion holes 15; and first and second end face plates 18, 19 disposed on one axial end and the other axial end of the laminated core body 13, respectively, the first and second end face plates 18, 19 including first and second through holes 32, 33, respectively. The first and second through holes 32, 33 each overlap a contour of a magnet insertion hole 15 on a radially inner side or a radially outer side in a plan view, and have first and second tapered portions 34, 35 gradually expanding the diameter toward the magnet insertion hole 15, respectively.

Abstract: An apparatus for inserting a magnet into a rotor iron core includes a magnet inserting unit configured to insert a permanent magnet into a magnet-insert hole formed along a lamination direction of a rotor iron core body in which a plurality of iron core pieces are laminated, and a guide member to be attached to the magnet inserting unit, and arranged in a space formed between the magnet inserting unit and the rotor iron core body and configured to communicate the magnet-insert hole of the rotor iron core body to a supply part for the permanent magnet formed in the magnet inserting unit.

Abstract: The disclosure relates to a method for manufacturing a laminate used for manufacturing a rotor, the method includes: (a) stamping out a plurality of workpieces from a metal sheet wherein each of the workpieces has a temporarily-interlocking portion; and (b) obtaining a laminate including the workpieces integrated together by the temporarily-interlocking portion, wherein each of the workpieces further has a shaft hole, a magnet insertion hole, and a weight-reducing hole formed between the shaft hole and the magnet insertion hole, and the temporarily-interlocking portion is provided to the weight-reducing hole.

Abstract: This disclosure relates to a method for manufacturing a laminate used for manufacturing a laminated core including a circumferential yoke part and a plurality of magnetic pole parts radially extending from the yoke part. This method includes: feeding a metal sheet drawn from a roll thereof to a progressive die; stamping out a plurality of workpieces from the metal sheet in the progressive die, wherein each of the workpiece comprises a temporarily-interlocking portion between adjacent magnetic pole portions; and stacking the workpieces to integrate these workpieces together by the temporarily-interlocking portion to obtain the laminate.

Abstract: A rotor having permanent magnets 10 includes: a laminated core body 13 having a shaft hole 12 in the center thereof and magnet insertion holes 15 around the shaft hole 12; permanent magnets 16 disposed in the respective magnet insertion holes 15; and first and second end face plates 18, 19 disposed on one axial end and the other axial end of the laminated core body 13, respectively, the first and second end face plates 18, 19 including first and second through holes 32, 33, respectively. The first and second through holes 32, 33 each overlap a contour of a magnet insertion hole 15 on a radially inner side or a radially outer side in a plan view, and have first and second tapered portions 34, 35 gradually expanding the diameter toward the magnet insertion hole 15, respectively.

Abstract: A method for manufacturing a laminated rotor core comprises a first step of positioning and mounting a laminated core body 14 on a mounting table 17 of a carrying tray 16, a second step of positioning and arranging the laminated core body 14 mounted on a mounting table 17 on a lower die 28, the laminated core body 14 having permanent magnets 15 inserted into respective magnet insertion holes 11 and 12, and clamping the laminated core body 14 mounted on the mounting table 17 by an upper die 29 and a lower die 28, and a third step of pushing resin out of resin reservoir pots 42 provided in the lower die 28 and filling the respective corresponding magnet insertion holes 11 and 12 of the laminated core body 14 with the resin through resin passages 43 formed in the mounting table 17.

Abstract: A method of resin-sealing a laminated core, including inserting permanent magnets 24 into magnet insertion holes 18 of a core body 15, pressing the body 15 with upper and lower dies 11, 12, and injecting resin 29 to the holes 18 from a resin reservoir 17 of the die 11 or 12 via a runner 19 in a removable cull plate 14, one end of the runner 19 having plural resin injection holes 33, 34 per hole 18. The resin 29 presses the magnets 24 in the holes 18 to one sides in a radial direction of the holes 18. Thereby, resin-sealing is performed using the plate 14 and the magnets 24 are arranged in radially outward or inward sides even with narrow gaps between the magnets 24 and the holes 18 or without resin injection holes in centers in a width direction of the holes 18.