... - machinery and engineering Caterpillar Drawing Machine(copper tube machine)1. IntroductionThe caterpillar drawing machine ... slowdown wheel box, tension unit, die seat, drawing clamp and pre-drawing unit, lubrication unit, bracket, and ... the die, the chain is tightened, the clamp is loosened; depending on the friction between die ... (CPD15+CPD10+CPD6) Caterpillar Drawing Machine (copper tube machine)