Method for manufacturing armature
The method for manufacturing an armature includes a step of independently pressing pressing-target segment conductors by a plurality of pressing jigs disposed for each of the pressing-target segment conductors, such that the plurality of pressing jigs are movable relative to each other, at least either one of first segment conductors and second segment conductors serving as the pressing-target segment conductors.
1. A method for manufacturing an armature including an armature core provided with a plurality of slots extending in a central axis line direction; and a coil part including a plurality of segment conductors having leg parts extending in the central axis line direction, the plurality of leg parts being joined together, the method comprising:
a step of disposing, in the plurality of slots, both of first leg parts of first segment conductors disposed on one side in a central axis line direction of the armature core among the plurality of segment conductors and second leg parts of second segment conductors disposed on an other side in a central axis line direction of the armature core; and
a joining step of joining together the first segment conductors and the second segment conductors disposed in the plurality of slots,
wherein
the joining step includes a step of independently pressing pressing-target segment conductors by a plurality of pressing jigs disposed for each of the pressing-target segment conductors, such that the plurality of pressing jigs are movable relative to each other, at least either one of the first segment conductors and the second segment conductors disposed in the plurality of slots serving as the pressing-target segment conductors.
2. The method for manufacturing an armature according to claim 1 , wherein the step of pressing the pressing-target segment conductors is a step of pressing the pressing-target segment conductors such that a pressurized load is applied to each of joint parts at which the first segment conductors and the second segment conductors disposed in the plurality of slots are joined together.
3. The method for manufacturing an armature according to claim 1 , wherein the step of pressing the pressing-target segment conductors is a step of a step of pressing the pressing-target segment conductors by positioning the plurality of pressing jigs disposed for each of the pressing-target segment conductors, and then allowing the positioned pressing jigs to move.
4. The method for manufacturing an armature according to claim 3 , wherein
the pressing jigs include first pressing jigs disposed for each of the plurality of slots and configured to be radially movable, and
the step of pressing the pressing-target segment conductors is a step of pressing the pressing-target segment conductors by positioning the first pressing jigs disposed for each of the plurality of slots by allowing the first pressing jigs to independently and radially move to come into contact with the first segment conductors and the second segment conductors, and then allowing the first pressing jigs disposed for each of the plurality of slots to simultaneously and radially move.
5. The method for manufacturing an armature according to claim 4 , wherein
the plurality of segment conductors are radially arranged side by side in the single slot, and
the step of pressing the pressing-target segment conductors by allowing the first pressing jigs to radially move is a step of independently and radially pressing the segment conductor disposed on an innermost side in each of the plurality of slots by a corresponding one of the first pressing jigs, and pressing other segment conductors disposed between the segment conductor disposed on the innermost side and a yoke part of the armature core by the segment conductors radially adjacent to the other segment conductors.
6. The method for manufacturing an armature according to claim 3 , wherein
the pressing jigs include second pressing jigs disposed for each of the plurality of segment conductors and configured to be movable in a central axis line direction, and
the step of pressing the pressing-target segment conductors is a step of pressing the pressing-target segment conductors by positioning the second pressing jigs disposed for each of the plurality of segment conductors by allowing the second pressing jigs to independently move in a central axis line direction to come into contact with at least either one of the first segment conductors and the second segment conductors, and then allowing the second pressing jigs disposed for each of the plurality of segment conductors to simultaneously move in a central axis line direction.
7. The method for manufacturing an armature according to claim 6 , wherein the step of pressing the first segment conductors and the second segment conductors by the second pressing jigs is a step of independently pressing the first segment conductors and the second segment conductors by the second pressing jigs from both of one side and an other side in a central axis line direction.
8. The method for manufacturing an armature according to claim 6 , wherein the step of pressing the first segment conductors and the second segment conductors by the second pressing jigs is a step of pressing the pressing-target segment conductors by positioning the second pressing jigs disposed for each of the plurality of segment conductors by allowing the second pressing jigs to independently move in a central axis line direction to come into contact with at least either one of the first segment conductors and the second segment conductors, and then fixing together the second pressing jigs disposed for each of the plurality of segment conductors by a fixing and moving jig, and allowing the fixing and moving jig to move in a central axis line direction.
9. The method for manufacturing an armature according to claim 6 , wherein
the segment conductors each further include a coil end part protruding outward in a central axis line direction from the armature core, and
the step of pressing the first segment conductors and the second segment conductors by the second pressing jigs is a step of pressing top parts of the coil end parts of at least either one of the first segment conductors and the second segment conductors.
10. The method for manufacturing an armature according to claim 1 , wherein
joint surfaces on which the first segment conductors and the second segment conductors are joined together are provided with joint materials, and
the method further comprises a step of joining together the first segment conductors and the second segment conductors with the joint materials by heating the first segment conductors and the second segment conductors, with a pressurized load being uniformly applied to the first segment conductors and the second segment conductors by pressing the pressing-target segment conductors.