Welding method for automobile instrument motor coil joint
A coil joint and welding method technology, applied in the field of processing and manufacturing, can solve the problems of large affected area, difficult to control the welding time, poor joint reliability, etc., and achieve the effect of small heat affected area and high welding speed
Inactive Publication Date: 2011-05-25
WUXI MCROT MOTOR
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Problems solved by technology
The original welding of the wire ends and joints of the motor coil of the automobile instrument usually adopts electric welding or argon arc welding. These welding methods have high welding temperature and long action time, so the welding heat affected area is large, which makes it easy to deform the plastic bracket.
Moreover, because the welding time is difficult to control, it is easy to produce false welding, and the stress concentration at the welding place is large, so the reliability of the joint is poor under the condition of alternating temperature and vibration
Method used
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[0009] Because the enameled wire of the motor coil of the automobile instrument is very thin, conventional electric welding is used between the wire end of the coil and the joint, which will cause the welded joint to be unstable due to the air oxidation problem, and may cause false welding. The invention adopts the precision micro-arc welding process, controls the power and action time of the arc during welding, and the arc discharge melts the joint metal, wraps the enameled wire with the molten metal, and at the same time applies the high temperature during melting to automatically remove the enameled wire paint film, so that the welded joint Very solid.
[0010] combine figure 1 with figure 2 , the welding method of the automobile instrument motor coil joint of the present invention: the coil 6 joint that is arranged on the support 5 is made up of enameled wire and joint, and each coil has two joints 3,4, and the enameled wire of coil 6 has two wire ends 1,2, The first wi...
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The invention discloses a method for welding a motormeter motor coil connector. The coil connector consists of a lacquered wire and a connector. During welding, the wire ends of the lacquered wire of a coil are wound on the connector respectively, wherein the winding height of the wire ends wound on the connector is larger than half of that of the connector; and then the top part of the connectoris welded through electric arc heating. In the welding process of the invention, the temperature is extremely high and up to be 3,000 DEG C, and molten copper vaporizes the lacquerfilm of the lacquered wire instantly without any hidden trouble of dry joint; and the welding time is only tens of milliseconds, the welding speed is extremely high, the heat affected zone is small, and damages to a plastic bracket are avoided.
Description
technical field [0001] The invention belongs to processing and manufacturing technology, in particular to a coil joint welding method of an automobile meter motor. Background technique [0002] The working environment of automotive instrument motors is at a temperature of -40°C to 150°C, with large vibration and high operating speed, so the reliability requirements for instrument motors are high. The original welding of the wire ends and joints of the motor coil of the automobile instrument usually adopts electric welding or argon arc welding. These welding methods have high welding temperature and long action time, so the welding heat affected area is large, which makes the plastic bracket easy to deform. Moreover, because the welding time is difficult to control, it is easy to produce false welding, and the stress concentration at the welding place is large, so the reliability of the joint is poor under the condition of alternating temperature and vibration. Contents of ...
Claims
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IPC IPC(8): H02K15/00H01R43/02
Inventor 金闻瑞
Owner WUXI MCROT MOTOR