Process scheme for sealing gaps among commutator risers
A process plan and a technology of raising the plate, which is applied in the field of armature manufacturing of DC motors, can solve the problems of armature grounding, low armature insulation resistance, etc., and achieve the effect of improving heat dissipation, low cost and easy realization
Inactive Publication Date: 2012-11-21
德州恒力电机有限责任公司
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Problems solved by technology
[0008] In order to solve the problem that the armature insulation resistance is very low or the armature is grounded often in DC motors with raised plates in the commutator, we invented a process for sealing the gaps between the raised plates of the commutator, which solved difficult problems , received good results
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[0020] 1, the concrete implementation steps of the present invention:
[0021] 1.1 The armature core and commutator are assembled on the armature shaft.
[0022] 1.2 Armature embedded wire.
[0023] 1.3 Armature wiring and welding, fill the sequence 6 magnet wire into the sequence 4 riser slot according to the rules, and the welding is firm, see Figure 4 .
[0024] 1.4 Arrange the raised pieces, fill the gap between the raised pieces with the epoxy glass cloth plate with a thickness of 0.5mm ~ 1.0mm in sequence 7, see Figure 4 .
[0025] 1.5 Shaping and binding of the armature: Shaping the armature in place, binding the end of the armature and the outer circle of the lifting piece with the sequence 9 non-weft tape, and binding firmly.
[0026] 1.6 Cut off the electromagnetic wire head and epoxy glass cloth plate protruding from the end surface of the rising piece, and repair the end surface of the rising piece to make it smooth.
[0027] 1.7 The armature is subjected to...
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In order to solve the problem that an armature always has very low insulation resistance or is grounded in a direct current motor of which a commutator is provided with risers, a process scheme for sealing gaps among commutator risers is invented, which solves difficult problems and achieves good effects that: brush carbon powder cannot enter the armature, so that the insulation resistance of the armature is improved; and simultaneously the mechanical strength of the commutator risers and the radiating capability of the armature are improved. The process scheme for sealing the gaps among the commutator risers is characterized in that: after an armature coil is welded with the commutator risers and before the armature dips paint, the gaps among the commutator risers is filled by epoxy glass laminated sheets of 0.5 to 1.0 mm first and then the excircles of the risers are firmly bound by unidrectional tapes; after the paint of the armature is dry, an epoxy resin casting mixture is cast to the end faces of the commutator risers; and the end faces of the risers form smooth and complete white planes after the epoxy resin is coagulated by heating. Therefore, all gaps of the risers are sealed.
Description
Technical field [0001] The invention relates to the manufacturing field of DC motors, and is particularly suitable for manufacturing armatures of DC motors with raised plates in the commutator. Background technique [0002] The commutator is an essential part of the commutation of the DC motor. It is often worn out and has many faults. It is the weak link in the DC motor. There are many structural types of the commutator. According to the length and structure of the raised plate, it can be simply divided into two categories: with raised plate and without raised plate. Usually, for commutators with raised pieces, the raised pieces are riveted or welded to the commutator pieces of the commutator, and there are many structural types (1). [0003] Our company has a history of producing DC motors for many years, and there are many varieties. DC motors with raised plates in the commutator are shipped out of the factory according to the relevant national standard tests. After a y...
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IPC IPC(8): H02K15/00H02K15/02
Inventor 巩方彬张明
Owner 德州恒力电机有限责任公司