求翻译：球头零件：采用粗、精车加工，精车时提高零件转速，减少进刀量，使表面粗糙度达到Rz6.5，然后再用抛光工艺将细微毛刺抛掉。是什么意思？

Ball parts: coarse, fine turning, precision car parts to improve speed and reduce the amount of feed, so that the surface roughness Rz6.5, and then throw away the burr polishing process will be fine.

ball head parts: to use rough, precision machining, precision car car parts when speed, reduce feed, to make the surface roughness, and then spend 6.5 Rz reach polished craft will fine burrs thrown off.

Ball components: Uses, the lathe finishing processing thickly, when the lathe finishing enhances the components rotational speed, reduces the feed quantity, enables the surface roughness to achieve Rz6.5, then uses the polishing craft again the slight burr jettisoning.

Ball end parts: rough and finishing processing, improve parts when finishing speed, decrease the amount of feed, so that the surface roughness of Rz6.5, and then polishing process of fine Burr to get rid of.