µÚʮղ¿·ÖÌâ½â²Î¿¼10-4 ÔÚͼ10-23 ËùʾµÄÂÖϵÖÐ,ÒÑÖª¸÷
Ϊµ¥Í·ÓÒÐýÎϸË,Çó´«¶¯±Èi15 ¡£ ÂÖ³ÝÊý, 3¡é
½âi15 =1 =-
n
z2z3z4z5 z3z4z5 30 60 30
=-=-=-90 n5 z1z2z3¡éz4¡é z1z3¡éz4¡é 20 1 30
10-6 ͼ10-25 ËùʾÂÖϵÖÐ,ËùÓгÝÂÖµÄÄ£ÊýÏàµÈ,ÇÒ¾ùΪ±ê×¼³ÝÂÖ,Èôn1=200r/min,n3=50r/min¡£Çó³ÝÊýz2¡é ¼°¸Ë4 µÄתËÙn4¡£µ±1)n1¡¢n3 ͬÏòʱ;2)n1¡¢n3 ·´Ïòʱ¡£
½â¡ß¡à¡ß ¡àÉèÔò
m
(z1+z2)=(z3-z2¡é) 22
m
z2¡é=z3-z1-z2=60-15-25=20i4 =n1-n4 =-z2z3 =-25 60=-5
13
n1 Ϊ¡°+¡±1)n1¡¢n3ͬÏòʱ:n4 =(n1 +5n3)/6=(200+5 50)/6=+75 r/min (n4Óë
n1ͬÏò) 2)n1¡¢n3·´Ïòʱ:n4 =(n1 +5n3)/6=(200-5 50)/6=-8.33 r/min (n4Óën1·´Ïò) 10-8 ½â
ͼ10-27 ËùʾΪ¾íÑï»úµÄ¼õËÙÆ÷,¸÷ÂÖ³ÝÊýÔÚͼÖÐʾ³ö¡£Çó´«¶¯±Èi17 ¡£
1-2-3-4-7 ÖÜתÂÖϵ,5-6-7 ¶¨ÖáÂÖϵ
¡ßi7 =n1-n7 =-z2z4 =-52 78=-169 14
n3 -n4 z1z2¡é 15 20 n4=(n1+5n3)/6
n-nnz7813 4 7 z1z3 24 21 21 i7 57 =5 =-=-=- n7 z
5 18 3 n4 =n5
¡àin2767
17 = 1 =
=43.92(n1Óën7ͬÏò) n7 63
ͼ10-28 ËùʾÂÖϵ,¸÷ÂÖ³ÝÊýÈçͼËùʾ¡£Çó´«¶¯±È10-9½â¡ßiH =
n1-nH =-z3 =-90
=-5
13iH =
n4-nH =z2¡éz3 =33 90=
55
nn
3 -H z1 18
i14 ¡£
43
n3 -nH z4z2 n3 =0
n
¡ài1H =1 =6 H
n3
i4H = 4 = nH 58 87 36 58
ni58
i14=1=1H =6 =116(n1Óën4ͬÏò) n4i4H 3
-1-
10-11 ͼ10-30 ʾ¼õËÙÆ÷ÖÐ,ÒÑÖªÎϸË1 ºÍ5 µÄÍ·Êý¾ùΪ1(ÓÒÐý), z¡é
= z , z¡é =100, 12244 =101, z =99, z¡é
=100,Çó´«¶¯±Èi ¡£5 1H z¡é
½â1-2 ¶¨ÖáÂÖϵ,1'-5'-5-4 ¶¨ÖáÂÖϵ,2'-3-4-H ÖÜתÂÖϵ¡ßi12=1 =
=
99n
=99¡ún2=1(¡ý)
n
z2
n2 z1 1 99i=n1¡é =z5¡éz4¡é =100 100=10000¡ún=101n1 (¡ü)
1¡é4¡é4¡é
n4¡é z1¡é z5 101 1 101 10000 i=
H
n2¡é-nH z4 1
==-1¡ún =(n +n) 2¡é4n-nz H22¡é4
4 H 2¡é¡ànH =(n2¡é +n4)=(1 -
1
1n101n1
n
)= 1
2 2 99 10000 1980000 i1H = 1 =1980000 H
n
-2-
µÚʮһÕ²¿·ÖÌâ½â11-11 ÉèV ´ø´«¶¯ÖÐÐľàa=2000mm,С´ø
ÂÖ»ù×¼Ö±¾¶dd1=125 mm,n1=960 r/min,´ó´øÂÖ»ù×¼Ö±¾¶dd2=500 mm,»¬¶¯ÂʦÅ=2%¡£Çó:(1)V ´ø»ù×¼³¤¶È;(2)С´øÂÖ°ü½Ça1 ;(3)´ó´øÂÖʵ¼ÊתËÙ¡£½â (1)V´ø»ù×¼³¤¶È:
L ?2a+(d +d )+4a 2 4 2000
p
(dd2 -dd1)2
p (500-125)2 d d1d2
=2 2000+(125+500)+=4999.33 mm 2
p255 ²é±í11-5:Ld=5000 mm (2)С´øÂÖ°ü½Ça1 :
a
1
= p -
dd 2 - dd1
= p -
500 -125
= 2.95409 rad = 169.257¡ã