Начертательная геометрия
.pdf
10. & |
181 |
$ 10.1
@ |
|
? " |
|
|
|
|
|
|
|
& |
; |
6 |
1 |
0,75; 0,5 |
8 |
1,25 |
1; 0,75; 0,5 |
10 |
1,5 |
1,25; 1; 0,75; 0,5 |
12 |
1,75 |
1,5; 1,25; 1; 0,75; 0,5 |
14 |
2 |
1,5; 1,25; 1; 0,75; 0,5 |
16 |
2 |
1,5; 1; 0,75; 0,5 |
18 |
2,5 |
2; 1,5; 1; 0,75; 0,5 |
20 |
2,5 |
2; 1,5; 1; 0,75; 0,5 |
22 |
2,5 |
2; 1,5; 1; 0,75; 0,5 |
24 |
3 |
2; 1,5; 1; 0,75 |
27 |
3 |
2; 1,5; 1; 0,75; |
30 |
3,5 |
3; 2; 1,5; 1; 0,75 |
0 , , , " + ( D ).
) D – " "-=55 ( . 10.2).
C D . # D (1 ) 25,4 . CD ( ) D .
DD . @ , D d = 1/2 -1/2 .
2 , " %#$ 6357–81, " ) " = 55° " +. ) D - D . B " . = -D . * D D D . @ D – ,+ , (, " d (-).
G, D' , ( . ." , ). @-( D
182 |
. |
' . @ , G1 ( . 10.11, ) ,25,4 ( . . D ). @ 33,249 . # ( . 10.11, )+ ) -,25,4 ( . . D ). !LH, D. @ : G1½ LH – 1½ , .
# D -, -.
K24×1,5
d
a |
|
|
|
= . 10.11 |
|
3 " =60 , D 1:16 ( " D' " 1 47 24 ) -6 60 , %#$ 25229–82,. / -
. |
– "4 24'1,5 |
( . 10.11, ). |
! |
||
C |
– "4 24'1,5 |
LH. |
-
"/"4 24'1,5.
4 %#$ 6111–52 " -) " = 60° ( . 10.2). / DD 1:16. D D 4, D. @ : 4 1½" 8 '2 6111–52.
2 %#$ 6211–81 " ) " = 55° " + ( . 10.2). / -
10. & |
183 |
D D 1:16. = D.
D( R – , Rc – -) ( D- ). @ , R1½1½ ( . 10.12).
= . 10.12
2 1 %#$ 9484–81 ) " 30°( . 10.13, ). C " , , + " . -D Tr, + ", - : Tr 32 ' 6 ( 10.13, ).
" 1 Tr,
,3 + " . ;«'», : Tr20'4(32). # D LH, - : Tr32'6LH, Tr80'40(P10)LH ( . 10.13, ).
|
|
|
|
= . 10.13 |
|
~ %#$ 10177–82 ) -" 3° 30° ( . 10.14, ). ) " . & ,+ " .
184 |
. |
S (- D' ), + ", : S50'8. C " - D LH, : S 50'8LH ( . 10.14, ).
! " S,, , 3+ " , : S 50'24(P8) ( . 10.14, ).
= . 10.14
3 ( ) . / - D " .
# D " + D.
$ , , " ( . 10.15).
= . 10.15
3 6 – (%#$ 6042–83.
: *14 8 '2 6042–83.
3 - ( +-, ) %#$ 13536–68 12 .
: 4 .12'2,54 8 '2 13536–68, "– 12 + " – 2,54 .
10. & |
185 |
$ 10.2
186 |
. |
M " ) ( 8…200 ).
: Rd16; Rd16LH/
& , ' D "" .
' D ) -+ " . D D ' ( ), D, " + " . @ , ' "60'3,5 - , 60+ " 3,5 .
F " ( * ( , "$(
& " ( () , ", , ) D ) - .
& ) D ) " ( . 10.16).
D ' ,D ( . @ . 10.17 10.18 -1( ).
= . 10.16
= . 10.17
10. & |
|
|
|
|
|
|
|
|
|
187 |
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
= . 10.18
" ( D + ,, %#$ 2.311–68.
$, + " 3 D D' - + . ? , D' + " 3, D D' " , . . b )3P b ) 4P ( . 10.3, , ; 10.17; 10.18). = d -" + " ,d – " + ".
10.3. =!'" ( %=) %* % &" )% %*
= +. # D :
) , ' D -;
) , ' D ' D, , , , + , ) " .
@ – ( , - , + , " . .
{ . N ," " , " – -" . ", + " . %) (+ " , , ). @-+ D + " " .
N " D + " . @ . 10.19 + " "- :
188 |
. |
" ;
+ ;
" . C
, D' , . D+ , + D , - D " " .
= . 10.19
C " D " R – D " . $ « » – l." "D ( D ) ).
10. & |
189 |
" :
{ "10'50 8 '2 7798-70 – + " " (%#$ 7798-70), 1 ( 1 - ), d=10 , + "( + " ) 50 .
& . ," " , " – .
D ( , " .)
@ + D ( . 10.20):
" %#$ 1491-80 ( .10.20, );
" " %#$ 17473-80 ( . 10.20, );
" %#$ 17475-80 ( . 10.20, );
" %#$ 17474-80 ( . 10.20, ).
" " D " -– + .
" , " "- D – + .
C l . !" l D " 4.
:
& "10'50 8 '2 17473-80 – " " (%#$ 17473-80), 1 ( 1 - ) 10 , + " ( + " ) 50 .
& 2"10'50 8 '2 17474-80,
" 2 – ; " – ;
10 – , ;
50 – , ; ) " – .
‰ – - , . # D ) ( . 10.21).
190 |
. |
= . 10.20