唯一最重要的差别是镗夹具一般用于控制衬套，或者在机器操作时支撑镗杆的外端。
The only major difference is that boring jigs are normally fitted with a pilot bushing or bearing to support the outer end of the boring bar during the machining operation.
其中设计专用夹具和组合镗头的应用进一步提高箱体的加工精度和效率。
The design combination boring head is for enhances the box body the processing precision and the efficiency.
镗模是孔加工用的精密夹具，主要用于箱体、支架等类工件的精密孔系加工。
Boring mold is an accurate fixture for machining holes, which is mainly used to machine accurate holes on parts such as cases and supports.
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