The upper position lr pressing board can be set randomly to reduce unnecssary idie travel. 壓板上浮位置任意設定，減少不必要空行程。
The empty space processing , adopt two to the brake block excircle fixes position , pressure board speeds up carrying out treating. 對于剎車片的外圓加工，采用兩空定位，壓板加緊進行加工。
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