Ultra-thin fewer-line type servo motor encoder

Abstract

The invention relates to a servo encoder which is also called a speed and displacement sensor, and in particular relates to an ultra-thin fewer-line type servo motor encoder. The encoder comprises a main shaft, a first bearing, a second bearing, a main body bearer, a movable grating, a double-layer circuit board, a code disc seat, a fixed grating, and a housing. According to the invention, an eight-core cable is used for time-sharing output of twelve paths of signals in a one-to-two manner, i.e., one core corresponds to A and U, one core corresponds to B and V, one core corresponds to Z and W, one core corresponds to \A and \U, one core corresponds to \B and \V, and one core corresponds to \Z and \W. The advantages are that an original fourteen-core cable is changed into the eight-core cable, thereby saving the space, the raw material cost, and the labor cost that refers to the installing, adjusting, welding and producing cost, and the client installing and welding cost; and now only eight lines have to be welded instead of fourteen lines so that the assembling operation time is saved, the working efficiency is improved, and at the same time installation convenience is brought to a user.

Description

technical field [0001] The invention relates to a servo encoder, also known as a speed and displacement sensor, in particular to an ultra-thin few-wire encoder for a servo motor. Background technique [0002] The servo motor encoder is a sensor installed on the servo motor to measure the position of the magnetic pole and the rotation angle and speed of the servo motor. The basic function of the servo encoder is the same as that of the ordinary encoder. The rotary incremental encoder outputs when rotating Pulse, the position is calculated by the counting device. When the encoder does not move or the power is cut off, it relies on the internal memory of the counting device to remember the position. In addition, the servo encoder is different from the ordinary encoder, that is Most of the servo motors are synchronous motors. When the synchronous motor is started, the magnetic pole position of the rotor needs to be known, so that the servo motor can be started with a large torqu...

AI Technical Summary

Problems solved by technology

[0004] The traditional servo motor encoder needs twelve channels of signals such as A, B, Z, \A, \B, \Z, U, V, W, \U, \V, \W to be connected one by one by fourteen-core cables. Output, that is, there are twelve signal lines on the circuit board of the encoder, so there are many shortcomings and deficiencies, which are manifested in: large space occupation, high raw material cost, assembly and welding production cost and user installation and welding cost high

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