色欲aⅴ亚洲情无码AV蜜桃_少妇养生馆SPA私密精油按摩_久久精品国产香蕉亚洲AV_国产 在线 | 日韩

大(da)家都知道(dao)鈑金圖紙的(de)注意事項嗎？來(lai)告訴(su)你

1展開方(fang)式要合(he)理(li)(li),盡可能減少不(bu)必(bi)要的工(gong)(gong)(gong)序及加(jia)工(gong)(gong)(gong)的方(fang)便(bian)性.考(kao)慮實際加(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)藝,合(he)理(li)(li)安(an)排加(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)序,(孔與折邊距離,壓鉚加(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)藝,焊(han)接(jie)加(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)藝等,以上情(qing)形(xing)要考(kao)慮加(jia)工(gong)(gong)(gong)順序的安(an)排) 

2合理選擇間隙及包邊(bian)方式 

間(jian)隙(xi)(xi)及包(bao)邊方(fang)式的(de)選擇(ze)一般原則為(wei):長邊包(bao)短邊,間(jian)隙(xi)(xi)根(gen)據(ju)板(ban)厚不同(tong)(tong)取值不同(tong)(tong),一般為(wei)0.2~1.0mm. 

3必須(xu)合理考慮公差, 

圖面公差標注(zhu)有如下(xia)幾種: 

A±a(公(gong)(gong)差不考慮),A0+a (不噴(pen)(pen)涂件,氧化件不須(xu)考慮走公(gong)(gong)差,噴(pen)(pen)涂件必(bi)需考慮走公(gong)(gong)差),A0-a(必(bi)須(xu)走公(gong)(gong)差),A+a-a(走平(ping)均公(gong)(gong)差) 

4對于門板類及(ji)盒體必(bi)須考慮毛刺方向 

對(dui)于(yu)該類零件的展(zhan)開,必須要考(kao)(kao)慮毛(mao)(mao)刺,達到折(zhe)彎后毛(mao)(mao)刺向里,對(dui)于(yu)一些大門板類零件設計時如未考(kao)(kao)慮烤漆掉掛工(gong)(gong)藝孔,而該零件又無其他孔,在(zai)展(zhan)開時考(kao)(kao)慮加開掉掛工(gong)(gong)藝孔. 

5抽牙,壓鉚,沖(chong)凸(tu),撕裂等(deng)位(wei)置方向必須明確,畫出剖面(mian)圖, 

6.對(dui)于圖面上(shang)不同(tong)(tong)孔(kong)(kong)(kong)徑的孔(kong)(kong)(kong)為(wei)了(le)加以區別應該在圖面上(shang)用字(zi)母分別標識,不同(tong)(tong)孔(kong)(kong)(kong)徑采(cai)用不同(tong)(tong)的字(zi)母, 

7必(bi)須選(xuan)擇合理的刀具(ju) 

8考慮(lv)烤漆及(ji)噴粉膜(mo)厚. 

9尺寸標(biao)注規范化(hua),齊全,清楚,壓鉚類標(biao)注需(xu)統一規范化(hua). 

尺寸(cun)標(biao)注(zhu)規范化:在任一圖面繪制好尺寸(cun)標(biao)注(zhu)前都要對尺寸(cun)標(biao)注(zhu)比例進(jin)行設(she)置(zhi),設(she)置(zhi)公式為AXP=1(A>0,P>0.P為設(she)置(zhi)值(zhi)既overall scale值(zhi)為P),尺寸(cun)文(wen)本字高為3. 

10材質,板厚要與表達方式相結合 

11選(xuan)擇合適的圖紙幅面. 

12.特(te)殊角(jiao)度折彎系數及內R角(jiao)變化(hua)要試(shi)驗(yan)確定. 

13部分尺寸較多的地方(fang)可畫出放大圖(tu)以便清楚表達. 

14.易出(chu)錯的地方需重(zhong)點提示,如(ru)不對稱(cheng)零(ling)件可在展開圖上畫出(chu)折彎示意. 

15對(dui)于需保護的地方(fang)要加(jia)以表示. 

16拉絲件要標明拉絲方(fang)向. 

17.所有折(zhe)彎示(shi)意圖(tu)(tu)按(an)標準一(yi)視角放置(zhi)(即按(an)我們(men)的(de)新圖(tu)(tu)框(kuang))毛刺面向里(li),不要因為放不下而改變放置(zhi)位置(zhi), 可適(shi)當調節比例和選擇圖(tu)(tu)框(kuang),使得整幅(fu)圖(tu)(tu)面的(de)排(pai)版美(mei)觀,整潔.所有折(zhe)彎示(shi)意圖(tu)(tu)不可相交.