Photoelectric encoder for steel bar straightening machine

The special photoelectric encoder for steel bar straightening machine consists of a photoelectric code disk with a shaft in the center, on which there are ring-shaped and dark engraved lines, which are read by photoelectric transmitting and receiving devices, and obtain four sets of sine wave signals combined into A, B, C, D, each sine wave has a phase difference of 90 degrees (relative to a cycle of 360 degrees), the C and D signals are reversed and superimposed on the A and B phases to enhance the stable signal; and one output per revolution The Z-phase pulse represents the zero reference position. Since the phases A and B differ by 90 degrees, the encoder's forward and reverse rotation can be judged by comparing the phase A or the B phase. The zero reference position of the encoder can be obtained through the zero pulse.

The material of the photoelectric encoder code disk for steel bar straightening machine includes glass, metal, plastic. The glass code disk is a thin engraved line deposited on the glass, which has good thermal stability and high precision. The metal code disk can directly pass and fail. The engraved line is not fragile, but because the metal has a certain thickness, the accuracy is limited, and its thermal stability is an order of magnitude worse than that of glass. The plastic code disc is economical, and its cost is low, but its precision and thermal stability , Life expectancy is worse.

Resolution—The number of open or dark engraved lines provided by the special photoelectric encoder for steel bar straightening machine per 360 degrees is called resolution. It is also called resolution indexing, or directly weighing the number of lines, generally 5~10000 per revolution. line.

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