介绍挡锁圈扩切机基本结构及工作原理；机床的几个关键部位的设计构思。
This paper describes basic structures and working principle for the machine for cutting and expanding the wheel lock ring, showing the design concept about essential elements.
不锈钢金属制品厂：不锈钢精铸配件、锁件、门挡、把手等。
Metallwarenfabrik Stainless Steel: Stainless Steel Casting parts, lock parts, door gear, handle, etc...
采用挡销式后拖钩，操作方便，并具有自锁功能，在行驶时不会因跳动而发生脱钩，安全可靠；
Rear hitch with spring self-locking device will not come loose when being towed on rough or bumpy road surfaces. both safe and reliable;
采用挡销式后拖钩，操作方便，并具有自锁功能，在行驶时不会因跳动而发生脱钩，安全可靠；
Rear hitch with spring self-locking device will not come loose when being towed on rough or bumpy road surfaces. both safe and reliable;
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