51吃瓜

01

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

???.

Lathe mainly is used for machining shafts, discs, sleeves and other workpieces with rotating surfaces, and is the widely used type of machine tool in mechanical manufacturing. (???????? ???? 0.01mm ?? ?? ??? ????)

2. ????? ?????? ??????:

???????? ??????? ?????? ??????? ? ??????? ???????? ????????? ? ??????????? ????????? ?? ?????? ???. (???????? ???? 0.05mm ?? ?? ??? ????)

3Name

?? ????? ?? ????? ?????? ??? ?? ??? ?? ???? ??? ?? ?? ????. ?????? ?? ??????? ?? ???????? ???????? ???????? ?????????? ???? ??????? ??????? ???? ?????????? ?? ???? ?? ??? ?? ????? ???? ????????? ????? ????? ?????????? ???? ? ???? ???? ???? ??????? ????? ????????? ????????? ???? ?????? ?????????? ???????????? ???? (???????? ?????? 0.005mm ?? ????? ???? ????? ???? ???????? 0.002mm ?? ????)

4. Fitter

?????? ????? ?? ??? include filing, sawing, marking, drilling, reaming, tapping and threading, scraping, grinding, straining, bending and riveting.

5. CNC lathe

?????? ??????? ????? ????? ???? ???? ? ??? ?? ?? ?????? ?? ????. (???????? ???? 0.01mm ?? ?? ??? ????)

6. ????? ?????? CNC

?????? ??????? ????? ????? ???? ????? ????? ??????? ????? ??? ???? ? ??? ?? ?? ?????? ?? ????. (???????? ???? 0.01mm ?? ?? ??? ????)

7. ??? ???

??????? ???? ??? ???? ??????? ?????? ??? brass ??? ? ??? ??? ??? molybdenum ???. ?????? ??? ???? ???? ???? ? ????? ??? ???? ????. ??? ?? ????? ????? ??????? ? ??????? ????. (????? ???? ??? ???? ?? ????? ???? 0.003mm ?? ?? ??? ????? ?? ???? ?? ????? ???? ??? ????? ?? ????? ???? 0.02mm ?? ?? ??? ????)

8. ????? ??????

?????????? ????? ???????? (EDM) ???????? ??????? ? ??????? ??? ????????? ?? ?????? ??? ?? ?? ??????? ????? ?????? ??? ??? (??? ???????? ????????? ????? ????????? ????????? ? ??????? ???) ???? ????? ????? ? ???? ????????? ????? ????????? ????? ? ?????. ?? ???? ???? ???? ?? ????? ????? ???? ????? ??????. (???????? ???? 0.005mm ?? ?? ??? ????)

??

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

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

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

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

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

???? ??????

1) ????? ?? ???? ???? ?? 0.05 ?????????? ?? ?????? CNC ?????? ???? ? ?? ?????? CNC ???? ?????; ??? ?? ????? ????? ?????? ??? ??? ???.

2) ????? ???? (?? ???? ?????) ??? ?? ???? ???? ?? ?????? ???????? ???. ????????? ??? ???? ?? ?????????? ??? ??? ?? ?????????? ?????? ? ???? ??? ?? ?????? ???? ???. ????????? ???????? ??? ?? ??????? ????????? ?? ???? ????? ???? (??????? ??????? 0.2 ?? ?? ??? ???? ?????????).

3) ?????? ?? ???? ???? ?? ? mm ???? ?? ??? ??? ?????? ? ??? ??????? ???? ?? ???? ?-?mm ???? ?? ??? ??? ?????.

4) ????? ????? ???? ????????? ??? ?? ??????? ??????? 0.4 ??? ? ????? ???? ????????? ??? ?? ??????? ????????? 0.2 ???.

5) ??? ????? ?????? 0.005-0.008 ???? ? ???? ?? ???? ?????? ??? ?? ????? ?????? ???.

??

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

????? ????? ????? ??? ?? ???? ??? ???? ???? ?? ??????? ? ?????????? ????? ???? ???. ?? ???? ????? ?????? ???????? ?????? ????? ????????? ?????????? ????? ?????????? ????? ????? ???? ???????? ????????? ?????????? ????? ???? ????? ??????? ? ??????? personnel ????????? ?????????? ????? ???? ? ?????? ????????? ????? ???? ?? ??? ??? ?? ?????? ?????? ???.

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

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

????? ????? ??????? ???? ????? ???? ? ??????? ??????? ?? ??? ???? ????? ????? ? referring to relevant technical information for direct estimation. ?? ???? ?? ?? ????? ?? ?????? ???? ? ????? ???? ???? ????? ??????? ??? ?? ?????? ???? ????? ?????? ???? ?? ?? ??????????? ? ????? ???? ?????? ????? ????? ????? ???.

??????? ??????=??????? ??????????+basic time

???? ?????? ?? ???? ???? ??????? ???? ?????? ?? ??????? ??????? ???????? ????? ??? ??????? ????????? ??????? ???????? ????? ?? ????? ?????? ? ????????????? ????? ???????. ??? ????: ???? ?? ???? ?????.

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

04

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

????????? ?????? = (????????? ????+??????) * ?.?

????? [1.2 ???? ????? ?????? ???]

????? ??????? = (?????? ????? ????+?????? ?????+????? ?????+??? ? ????????? ??????+?????) * ?.?

????? [1.2 ???? ????? ?????? ???]

????? ????=??? (density * volume) * ???? ???? (yuan/kg)

?????? ?????=??????? ?????? * ???? ???? (????/????)

????? ???? ????? (????)=???? ???? (???)/???? ?????

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

????? ?????=???? ??? * ???? ???? (????/????)

??????? ?????:

1) Lathe: 60 yuan/hour

2) ????? ??????: ?? ????/????

?) ????? ????: ?? ????/????

4) Fitter: 80 yuan/hour

5) ???? ??????: 60-120 ????/????

6) CNC lathe: 60-120 yuan/hour

7) ????? ??????: ??-??? ????/????

8) ???? ??? ????: 60-150 ????/????; ???? ???? ???? ??????? ???? ?? ???? ???? ?? ???? ?? ???? ??????? ????? ??? ????? 0.06-0.08 ????/mm2 ???.

9) ????? ????? ??????: ???? ????? ???? tungsten? 1 ????/mm ???? ?????????? ???? ? ???? 0.3? 2-3 ????/mm ???? ?????????? ??? 0.3; ? 0.3 ? ????? 1.8-2 ????/mm

10) ????? ??????: ???? ????? * 0.2