ãå¤æ³¨ï¼å¥½å¤ä¹¦ä¸é½æï¼è¿æ¯æå¸®ä½ æ¾çã å
³äº
ç®çé¿åº¦ç计ç®
ä¸ã弯æ²è°æ´å¼çæ¦å¿µ
对äºåæ ¹é¢ç®é¿åº¦åä¸æé¿åº¦æ¯ä¸åçï¼é¢ç®é¿åº¦æ¯æç
§é¢ççå¤ç®è®¡ç®ï¼ä¸æé¿åº¦æ¯æç
§é¢ççä¸è½´çº¿è®¡ç®ãä¾å¦ä¸æ ¹é¢ç®é¿åº¦ä¸º1ç±³é¿çé¢çï¼å
¶ä¸æé¿åº¦ä¸éè¦1ç±³ï¼æ¯å°äº1ç±³çï¼å 为é¢çå¨å¼¯æ²çè¿ç¨ä¸ä¼åé¿ï¼å¦ææç
§1ç±³ä¸æï¼è¯å®ä¼é¿åºä¸äºãé¢ç®é¿åº¦åä¸æé¿åº¦çå·®å¼ä¹å°±æ¯é¢çç弯æ²è°æ´å¼ï¼ä¹ç§°ä¸ºé度差å¼ãå®å®é
ä¸ç±ä¸¤æ¹é¢é æçï¼ä¸æ¯ç±äºé度çä¸åï¼ä¾å¦ä¸é¢è¿æ ¹é¢çï¼é¢ç®çé¿åº¦æ¯100+300=400mmï¼èå®é
ä¸å¨ä¸ææ¶åªéè¦æªå100-d/2+300-d/2é¿çä¸æ®µé¢çå³å¯å¼¯å¶æä¸é¢çå½¢å¼ãäºæ¯ç±äºé¢çå¨å¼¯æ²çè¿ç¨ä¸é¿åº¦ä¼ååï¼å¤ç®ä¼¸é¿ãå
ç®ç¼©çãä¸è½´çº¿ä¸åã
äºã弯æ²è°æ´å¼ç计ç®
å¨è¿éç¨å°ä¸ä¸ªå¼§åº¦åè§åº¦çæ¢ç®å
¬å¼ï¼1rad=3.14*r*2/360,å³ä¸åº¦è§å¯¹åºç
弧é¿æ¯0.01745rãå¦å¤ãé¢çæ··ååæ½å·¥åéªæ¶è§èãï¼GB500204-2002ï¼è§å®180度弯é©ç弯æ²ç´å¾ä¸å¾å°äº2.5dï¼å¨ä¸é¢çæ¨å¯¼ä¸Då2.5dã
1ã180度弯é©ç计ç®
è§ä¸å¾ï¼é¢ççç´å¾ä¸ºd,弯æ²ç´å¾ä¸ºDã
æç
§å¤ç®è®¡ç®é¢ççé¿åº¦ï¼L1=AE水平段çé¿åº¦+CD水平段é¿åº¦=300+3d
æç
§ä¸è½´çº¿è®¡ç®é¢ççé¿åº¦ï¼L2=AB水平段é¿åº¦+BC段弧é¿+CD段水平é¿åº¦=300-D/2-d+0.01745*ï¼D/2+d/2ï¼*180+3d=300+6.25d,弯æ²è°æ´å¼=L1-L2=3.25d
2ã90度弯é©ç计ç®
è§ä¸å¾ï¼é¢ççç´å¾ä¸ºd,弯æ²ç´å¾ä¸ºDã
æç
§å¤ç®è®¡ç®é¢ççé¿åº¦ï¼L1=300+100
æç
§ä¸è½´çº¿è®¡ç®é¢ççé¿åº¦ï¼L2=AB水平段é¿åº¦+BC段弧é¿+CD段
ç«ç´é¿åº¦ =300-D/2-d+0.01745*ï¼D/2+d/2ï¼*90+100-D/2-d
=300+100-1.75dï¼
弯æ²è°æ´å¼=L1-L2=1.75d
3ã135度弯é©ç计ç®
è§ä¸å¾ï¼é¢ççç´å¾ä¸ºd,弯æ²ç´å¾ä¸ºDã
æç
§å¤ç®è®¡ç®é¢ççé¿åº¦ï¼L1=300+10d
æç
§ä¸è½´çº¿è®¡ç®é¢ççé¿åº¦ï¼L2=AB水平段é¿åº¦+BD段弧é¿+DE段é¿åº¦=300-D/2-d+0.01745*ï¼D/2+d/2ï¼*135+10d=300+10d+1.9dï¼
弯æ²è°æ´å¼=L1-L2=1.9d
ä¸ã弯é©é¿åº¦ç计ç®
1ã计ç®å¼¯é©æ¶çååæ¯æ 论ä¸æé¿åº¦è¿æ¯é¢ç®é¿åº¦é½æç
§ä¸è½´çº¿è®¡ç®ãå¯ä»¥æ³ä¸ä¸ï¼æ们åé¢ç®æ¶ç´é¢ç180度弯é©æ¶åçé¿åº¦æ¯6.25d,åæ¥æ们é½æ¯è¿ä¹åçï¼æ²¡æ人é®ä¸ºä»ä¹ï¼èå®é
ä¸6.25dåçé¢ççä¸è½´çº¿é¿åº¦ãå
¶å®ç®çãæçæ«ç«¯135弯é©çé¿åº¦è®¡ç®ä¹æ¯ä¸ä¸ªéçï¼è§èè§å®çé¿åº¦æ¯10d,èæ们计ç®æ¶å11.9d,åæ ·ä¹æ¯éµå¾ªä¸é¢çååã
2ãéè¦æåºçæ¯ï¼æ 论ç®ç弯é©è¿æ¯æç弯é©ï¼å¼¯æè§åº¦é½æ¯135度ï¼è¿å¨03G101-1第35页ææç¡®ç说æãå æ¤å¦æå¨è®¡ç®æç弯é©é¿åº¦æ¶å12.5dæ¯é误çã
åã弯æ²è°æ´å¼çåºç¨
1ã尽管æ们对è¿ä¸ªåè¯å¯è½ä¸äºè§£ï¼ä½å®é
ä¸æ们å¨ä¸ç¥ä¸è§ä¸å°±å¨åºç¨å®ãä¾å¦ä¸é¢æ说ç180度ç弯é©å¹³ç´æ®µé¿åº¦æ¬æ¥æ¯3d,è计ç®æ¶å6.25d;135度弯é©å¹³ç´æ®µé¿åº¦æ¯10d,è计ç®æ¶å11.9dã
2ãå½æ们ç¥éäº90度弯é©ç弯æ²è°æ´å¼ä»¥åï¼å°±å¯ä»¥æ ¹æ®é¢ç®é¿åº¦è®¡ç®ä¸æé¿åº¦äºï¼
å¦ä¸å¾ï¼æ¢æªé¢å°ºå¯¸a=300ãb=500
计ç®ç®ççé¢ç®é¿åº¦ï¼æå¤ç®è®¡ç®ï¼ï¼
L1=(a-25*2+b-25*2)*2+(2*11.9+8)d
è¿é对äº8dæ¯å¦æçé®ï¼å®é
ä¸è¿æ¶åå°ä¿æ¤å±çæ¦å¿µãé¢ççä¿æ¤å±æçæ¯ä¸»çå¤ç®å°æ件å¤è¾¹ç¼ç尺寸ï¼èæ们è¦è®¡ç®ç®ççå¤ç®é¿åº¦ï¼å æ¤ï¼ä¸å¼ä¸æ¯â-25âå°±å¤åäºä¸ä¸ªç®ççç´å¾ï¼å æ¤å¨åé¢è¦å ä¸8dã
计ç®ç®ççä¸æé¿åº¦ï¼æä¸è½´çº¿è®¡ç®ï¼ï¼
L2=(a-25*2+b-25*2)*2+(2*11.9+8)d-3*1.75d
è¿éå°±å©ç¨äº90度弯é©ç弯æ²è°æ´å¼ï¼ç®çæä¸ä¸ª90度弯é©ï¼åºè¯¥åå»â3*1.75dâãå¨æ½å·¥ä¸æ个计ç®ç®çé¿åº¦çå
¬å¼æ¯â2A+2B+26.5dâå°±æ¯è¿æ ·æ¨å¯¼åºæ¥çï¼å½ç¶ï¼è¿éAãBé½æ¯æç®ççå
ç®é¿åº¦ã
äº,ç®çåæ ¹ä¸æé¿åº¦è®¡ç®å
¬å¼åè¿ç¨è¯¦è§£ï¼- ç¾åº¦ç¥é > çå·¥å¦ç§ > å·¥ç¨ææ¯ç§å¦
解å³æ¶é´ï¼2006-9-12 11:27
1ï¼ç©å½¢ç®çä¸æé¿åº¦è®¡ç®å
¬å¼
ç®çä¸æé¿åº¦=ç®çå¨é¿+ç®çè°æ´å¼ï¼è¡¨1ï¼
å¼ä¸ ç®çå¨é¿=2*ï¼å¤å
宽度+å¤å
é¿åº¦ï¼ï¼
å¤å
宽度=b-2c+2dï¼
å¤å
é¿åº¦=h-2c+2dï¼
bÃh=æ件横æªé¢å®½Ãé«ï¼
cââ纵åé¢çç
ä¿æ¤å±å度ï¼
dââç®çç´å¾ã
2ï¼è®¡ç®å®ä¾
ææéæ¡æ¶æ¢è·¨ä¸æªé¢å°ºå¯¸bÃh=250mmÃ500mmï¼æ¢å
é
çç®çÏ6@150ï¼çºµåé¢ççä¿æ¤å±å度c=25mmï¼æ±ä¸æ ¹ç®ççä¸æé¿åº¦ã
解ï¼å¤å
宽度= b-2c+2d = 250-2Ã25+2Ã6=212ï¼mmï¼
å¤å
é¿åº¦=h-2c+2d = 500-22Ã25+2Ã6=462ï¼mmï¼
ç®çä¸æé¿åº¦=ç®çå¨é¿+ç®çè°æ´å¼
=2*ï¼å¤å
宽度+å¤å
é¿åº¦ï¼+110ï¼è°æ´å¼ï¼
=2*ï¼212+462ï¼+110=1458ï¼mmï¼
â1460ï¼mmï¼ï¼æéç®ï¼
ç®çå½¢å¼ ä½¿ç¨ç»æ ç®ç弯é©
ä¸ç´æ®µé¿åº¦Lp ç®çç´å¾
HPB235级 HRB335级 CRB550级
6 8 10 12 8 10 12 5 6 7 8
90°/90° ä¸è¬ç»æ Lpâ¥5d 5d 6d 5.28d
30 40 50 60 50 60 70 30 30 40 40
135°/135° æéç»æ Lpâ¥10 18d 20d 18.4d
110 140 180 220 160 200 240 90 110 130 15
------------
Lï¼2ï¼a+b-2c)+2d å¼ä¸ï¼
Lï¼ç®çå±å¼é¿åº¦ï¼aãbï¼æ¢ãæ±çæªé¢å°ºå¯¸ï¼cï¼ä¿æ¤å±å度ï¼dï¼ä¸¤ç«¯å¼¯å¾é¿åº¦ãåä½å为cmã
åªåè®°å¿ï¼å¼ä¸ä»£å·ä¸è§èä¸ç代å·ä¸ä¸æ ·ã
-------------------
èºæç®çä¸æé¿åº¦
èºæ线çé¿åº¦å¯ä»¥ç¨
ç´è§ä¸è§å½¢æ±è§£ï¼
ï¼1ï¼åºè¾¹ï¼åå½¢çå¨é¿Ãç®çåæ°
ï¼2ï¼å¦ä¸ä¸ªç´è§è¾¹ï¼ç®çåå¸æ»é«
ï¼3ï¼ç®çä¸ææ»é¿å°±æ¯
æè¾¹é¿ï¼è¿å°±æ¯å¾è¡å¼¦é®é¢äºã
ä¸ææ»é¿ï¼{(1ï¼å¹³æ¹ï¼ï¼2ï¼å¹³æ¹} åå¼å¹³æ¹
---------------
é¢çç®çé¿åº¦ç计ç®
æé L=ï¼a-2c+2d)*2+(b-2c+2d)*2+24d
éæé L= (a-2c+2d)*2+(b-2c+2d)*2+14d
aæä»¶é¿ bæ件宽 cä¿æ¤å± dé¢çç´å¾....åºè¯¥+25då15då·®ä¸å¤ï¼è¿ä¸ªæ æ³ç®åçï¼é¢ç®ä¸èè
延伸ç