ARC-WELDING DEVICE, ELECTRICAL EQUIPMENT, MOTOR UNIT, AND MOTOR REPLACEMENT METHOD FOR ELECTRICAL EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To solve the problem in which: an exclusive wire feeding device using a brushless motor instead of a brush motor is required to be selected to realize high-speed welding, high deposition welding and long life; and the wire feeding device using the brushless motor is expensive because it is handled as a special product.SOLUTION: An arc-welding device with an arc-welder and a wire feeding device includes: a brushless motor for feeding a wire; a motor drive circuit for outputting a brush motor control signal; and a conversion circuit for converting the brush motor control signal outputted by the motor drive circuit into a brushless motor control signal and outputting the brushless motor control signal to the brushless motor. Only the brush motor is replaced with the brushless motor having the conversion circuit to thereby easily realize high-speed welding and high deposition welding and easily realize long life of the motor used for the wire feeding device without changing other configurations.