Abstract: Warp knitting machine take-up mechanism was composed of worm-gear retarder and chain transmission.In service life of the knitting process,the worm wear phenomenon appeared.The coiling force cannot be precisely calculated.For obtain the reason of worm wear,using wireless torque measurement system.Torque of the worm output shaft was measured.The worm torsion load signal mapping was obtained.The reason of impact load showned in the mapping and worm wear failure were analysed.The design method and the structure were improved.

Key words: warp knitting machine, take-up mechanism, worm wear, failure, torque, measure