51吃瓜

?? ????? CNC ?? ???????? ????? ????? ?????????? ??? ???? ??????? ??????? ???? ?????? ???????????????? ?????? ?? ???? ????? ?????? ??????. ??????? ???? ???? ??? ?? ??????? ????????? ?? ????? ????? ? ???? ???? ?????????? ???? ?? ?? ?? ????? ????? ?? ??????? ?? ??? ???? ?? ?????? ??? ?????. ?? ??? ???? ???? ????? ???????? ????? ??? ?? ???? ????????? ????????? ?? ????????? ???? ?? ????? ??????? ???? ?? ???? ????? ???? ?? ?????? ????

?? ??? ??? ????? ?? ???? ?????? ????????? CNC? ????????? ??????? ??????????? ? ???? ???? ???????? ???. ???? ????? ???? ????? ??? ????? ???? ?????? ??? ????? ?? ????? ???? ?????? ???? ????? ????? ????? ????? ???? ? ????? ????? ?? ?????? ????? ??? ?? ???? ????? ???? ???? ???? ???? ?????? ???? ???? ???? ??? ?? ? ?????? ?? ???? ?? ?????? ????? ???? ??? ???? ??? ????? ? ???? ????? ??? ?????? ???? ?? ????? ????

???? ???? ???????? ???? ??? ???? ???? ?????? ??? ???? ????? ??? ?? ?? ?????? ????????? ??? ?????? ???? ???? ?? ???? ?? ???? ????? ???? ????? ??????? ?? ???? ??? ????? ??? ????? ???? ????? ????? ???. ?? ???????? ???? ????? ?? ????? ???????? ????? ?????? ?? ????????? CNC ?? ???? ?????? ? ??? ??????.

?????? ???

?? ????? ???????? ???? ??? ?? ???????????? ??????? ????? 4 ??? ??? ???????? ? ???? ???? ?????? ?? ????? ?? ??????. ?? ??? ??? ??? ??????? ??? ??? ???? ???? ???? ?? ???? ??? ???? ??? ?? ???? ???? ???? ?? ???? ???? ?????? ???????? ??? ?? ????? ???? ???? ??? ????? ???

?????????? ?????? ?? ???????

?? ????????? ?????? ????? ?????? d ?? ?? ????? ??? ??? ????? ?????? ???. ???? ????????? ???????? d=d-0.1p; ????? ???? d2=d-2H=d-2X0.65 (0.54) P? ???? ?? 0.65 ????? ????? ?? ????? ??????. ?????? ???? n ?? ???? ???? ???? ????? n1200/p-80? ? ?? ?????? ?????? ??? ?? ?????? ????? ?????? ???. ???? ??? F F = p ???? ?? ???? ? f=S ???? ????? ???? ???. ???? ???? ????? ?????? ??? ?? ??? ????? ????? ????? ?? ? ??? ????? ???? ?? ??? ????? ????? ???.

?? ????????? ????? ?????? ?? ???? ???? ????? ???? ??????? ????? ????????? ???? ???? ???? ?? ???? ????? ?????? ???? ????.

??? ?? ??? ????? ????? ?????? ?? ????? ??????? n ????? ????? ?? ????? ??????? ? j ????? ????? ?? ?? ?? ????? ????? ??????. ????? ????? 0.3 ???? ?? ?? 1, 2, 3...? ????? ?? ????? ????? ???? ???.

For example, for threads external with a pitch of 1.5 mm, a total thread depth of 0.94mm, and 6 tool passes, the feed rate for each pass is calculated as follows

????? ?????: a1=0.94/50.3=0.23mm;

??? ???: a2=0.94/51=0.42mm? ?? ???? ????? 0.42-0.23=0.19mm;

??? ???: a3=0.94/52=0.59mm? ?? ???? ????? 0.59-0.42=0.17mm;

??? ?????: a4=0.94/53=0.73mm? ?? ???? ????? 0.73-0.59=0.14mm;

??? ????: a5=0.94/54=0.84mm? ?? ???? ????? 0.84-0.73=0.11mm;

??? ???: a6=0.94/55=0.94mm? ?? ???? ????? 0.94-0.84=0.10mm;

???? ??????? ?? ???? ????? ?????????? ???? ?????? ??????? ?????? ?? ????????? ???? ?? ??????? ????.