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???? . 1.???????????? 2.???????????3.?????????4.????????????5.????????. ?????. ????: ?????????????????????????: ???????,???????????????????,????????????: ??????????????,???????,?????,?????. ?????. ?????????(????)????????(????)??????????????(????). ?????????(????). 1.???: ???????,???? .
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1. ??? ? ?
2. ???? 1.????????????
2.???????????
3.?????????
4.????????????
5.????????
3. ????? ????:
???????????????????
??????:
???????,???????????????????,??????
??????:
??????????????,???????,?????,?????
4. ????? ?????????(????)
????????(????)
??????????????(????)
5. ?????????(????)
6. 1.???: ???????,????
7. 2.???:????????????,??? ????,????????????
8.
3.????:(????)
????????:
?????,??????????,?????,?????
??:
????,????,?????,??????,???????
????:???????????????????????????
10. 4.????(?????) ?????????,????,?????? ?? ??:????,???,??????
11. 5.???????????????????????????????????????????????????????????????
12. 6.?????????????????????,?????????
13.
????????(????)
14. 1.?????(????)??????90????,???????,?????,????????,???????
15. 2.???? ?????????180?,?????????,?????????,??????????????90,???????????90??????
16. 3.????? ????????????
17. ??????????????(????)
18. 1.??????(????) ????????
19. 2.?(???)??????????????????????????????
20. 3.??????(??)
21. 4.?????????????????,????????????????????
22. ???????????:
?????????????,???????,????????,??????????????60~90?????????,???????,??????????????????
??????,????,?????????
??????,??????????
23. ?????? ?????,???????,???????????????,????????,??????????????????????????,????????:
?????????????????????,??????????????,???????????,???????????????????
26. ????,?????,?????????????????N????D????T?????????,???: TB
TA
??????,??????????,??????,???????
27. ????? ?????
????
28. ????? ??????????????? ?
?????:
??????(????)???,???????????
29. ?:d??????D???????????,?:d=Dcos??
30. 2.????????: (1)??????,??????????????,??????????,?????
(2)??????????,??????
(3)???????????,???????????????????????(???????)?
(4)??????,???????
(5)???????, ???????????:?????????????
31. ????????(Interference): ?????????????????????????,???????????? ?
???????:
(1)??????(2)???????(3)?????????(4)??????(5)????????
???????????????????????,???????
33. ???? (1)???(Cycloid):????????? ?,????????????
(2)???(Epicycloid):????????? ??,????????????
(3)???(Hypocycloid):???????? ???,????????????
35. 2.?????: ??????(???)????????
??????????????,?????,?????
????????????,?????????,??????,????????
????????????,?????????,??????????
37. 3.???????: (1)?????????,????????????????????(??????????)?
(2)??????,?????????????????,?????0?
(3)????,????
(4)?????????:?????????????????????????????????????
38. 4.?????? ?????????????,???????
39. ?????????????
?????,?????????????,??????????,?????????
40. ??????? 1.??(Pitch Circle):??????????????
2.????(Pitch Diameter):????,?D???
3.??(Pitch Point):???(???`)???????????
42. 4.???(Addendum Circle):??????,???????,?D0??,?D0=D+2a?
5.???(Dedendum Circle):???????
43. 6.??(Addendum):???????????,?a???
7.??(Dedendum):???????????,?b???
8.??(Depth of Tooth):?????,????????,?h??,?h=a+b?
44. 9.??(Tooth Thickness):???,?????????
10.??(Tooth Clearance):???,?????????
11.??(Tooth backlash):?????????????????,?:??=??=a???????????????
12.??(Face of Tooch):??????????
13.??(Flank of Tooch):??????????
45. 14.????(Working Depth):??????,??????????,?h??,h=2a?
15.??(Clearance):????,???????,????????????????,?c??,?c=b-a=h-h'?
46. 15.??(Module): ??????,???????????,?M?????:?????????(M=D/T),???mm?
50. 12.??(Diametral Pitch): ??????,???????????,?Pd???
??:?????????(Pd=T/D),??
???????,?MPd=25.4
52. 13.??(Circular Pitch): ??????,????????????????????????????????,?Pc???
53. 4.???????????: ??????????????????????
????????????????????????
55. ?? Pc=pD/T=pM(??)=(p/Pd??)*25.4
?? Pc=p48/12=4p(??)=(p/4??)*25.4
??M=D/T=48/12=4
??Pd=T/D=12/48=1/4*25.4
56. 19.???(Angle of Action):??????????,????????????????????????????
20.???(Arc of Action):????????????????????,?????????????
57. 21.??(Bace Circle): ??(???`)???,????????????????;?????????????????,?DB???
58. 23.???: ????????????,??????????
????????????,????????????
59. 24.???: ??????????????,??????
60. 25.???(Pressure Angle): ????????????
????????????20?
???????????,??????????????????????????,?????0?
?????,????????,?????,?????,???????????????,?????
62. 26.???: ?????????????C???
63. (1)??:
(2)??: