Bending machine encoder

The encoder of the bending machine consists of a photoelectric code disk with a shaft in the center, on which there are circular 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; in addition, output a Z-phase pulse per revolution To represent 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 encoder code disc of the bending machine is glass, metal, plastic. The glass code disc is deposited on the glass with a very thin line, which has good thermal stability and high precision. The metal code disc is directly engraved with and without pass. Not fragile, but because metal has a certain thickness, the accuracy is limited, and its thermal stability is an order of magnitude worse than that of glass. Plastic code discs are economical, and their cost is low, but accuracy, thermal stability, and life are all It's worse.

Resolution—The number of open or dark engraved lines provided by the encoder of the bending machine per 360 degrees of rotation is called the resolution, also known as the resolution index, or the number of lines directly, generally 5 to 10,000 lines per revolution.

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