成型產(chǎn)品設(shè)計(jì)要領(lǐng)ppt課件

1、內(nèi)部教育訓(xùn)練主講人: 塑膠射出成型產(chǎn)品設(shè)計(jì)要領(lǐng)D R. S U L I C H A N G.學(xué)習(xí)內(nèi)容開(kāi)發(fā)時(shí)程緊縮達(dá)成開(kāi)發(fā)共識(shí)建立彼此默契贏(yíng)得最後勝利產(chǎn)品設(shè)計(jì)要領(lǐng)產(chǎn)品/模具結(jié)合加速開(kāi)發(fā)時(shí)間增強(qiáng)市場(chǎng)競(jìng)爭(zhēng)力.前言Part GeometryMaterialsProcessingToolingGOOD DESIGNER.大綱肉厚(Wall Thickness)R角(Radii)肋與角板(Rib&Gusset)補(bǔ)強(qiáng)設(shè)計(jì)脫模角度(Draft Angle)凸轂 (Boss)孔洞 (Hole)螺紋 (Screw Thread)文字 (Character)紋飾 (Shiver)分模線(xiàn) (Parting Line)

2、死角 (Undercut)組配 (Assembly)Di Da Di.肉厚(Wall Thickness)肉厚決定要素TLFORM FACTOR結(jié)構(gòu)強(qiáng)度成型性成型效率產(chǎn)品外觀(guān).肉厚大小之影響肉厚(Wall Thickness)肉 厚 強(qiáng) 度 冷卻時(shí)間 流 動(dòng) 性 外 觀(guān)大強(qiáng)長(zhǎng)佳凹陷小弱短差流痕.肉厚不均之影響(一)肉厚(Wall Thickness)WarpageSink MarkSharp Corner.肉厚不均之影響(二)肉厚(Wall Thickness)流動(dòng)遲滯GateGate.肉厚(Wall Thickness)梯度設(shè)計(jì)使肉厚變化較緩逃料來(lái)肉厚變化肉厚變化太大肉厚不均之設(shè)計(jì).R角(R

3、adii)減少邊角應(yīng)力集中(增強(qiáng)邊角強(qiáng)度)直角變R角之目的(一)1.01.52.02.53.0.0.2.4.6.81.01.21.4應(yīng)力集中因子R/T RatioRPTIR=0.5TOR=1.5T.R角(Radii)降低流動(dòng)阻力(分子或玻纖陳列不連續(xù))直角變R角之目的(二)流動(dòng)阻力大流動(dòng)阻力小.肋與角板(Ribs & Gussets) 添加成型品強(qiáng)度肋與角板設(shè)計(jì)目的 幫助成型品充填 橫肋 凹陷、包風(fēng)、翹曲、週期長(zhǎng).肋與角板(Ribs & Gussets)肋設(shè)計(jì)準(zhǔn)則DARHTW 0.5。 4T= 1/4T 2.5-3T= 0.6-0.75T.HWDdT肋與角板(Ribs & Gussets)角板

4、設(shè)計(jì)準(zhǔn)則 2T= 3T =T0.6-0.7T=.補(bǔ)強(qiáng)方式添加肉厚與形狀變化.脫模角度(Draft Angle)脫模角設(shè)計(jì)通則易脫模fDfDfdfdHHSH50 mm; S/H1/600.5*(D-D)/H=1/100-1/500.5*(d-d)/H=1/100-1/50.凸轂(Bosses) 凸轂設(shè)計(jì)通則孔洞補(bǔ)強(qiáng)裝配嵌合部分增高HLWdTDD=diameterT=thicknessL2D add rib or gussetsW=0.6-0.7TH=3Dd = not so close to the side.孔洞(Holes) 孔洞設(shè)計(jì)要項(xiàng)裝配、組合裝飾、通風(fēng)孔至孔及孔至側(cè)壁之距離3d2dd孔

5、洞附近需加以補(bǔ)強(qiáng).孔洞(Holes) 孔洞設(shè)計(jì)要項(xiàng)對(duì)靠孔洞採(cǎi)不同孔徑盲孔附近壁厚均一dd+0.5L2DD.孔洞(Holes) 孔洞設(shè)計(jì)要項(xiàng)自攻螺絲需加錐坑其他要項(xiàng)軸心設(shè)計(jì)平行於脫模方向模銷(xiāo)之強(qiáng)度應(yīng)予以考慮.螺紋(Screw Thread)已不常設(shè)計(jì)螺牙或自供螺牙32牙/in防止薄緣.文字(Character)方法燙金或印刷直接加工加工簡(jiǎn)易加工困難鑲件處理.紋飾(Shiver)紋飾手法燙金或印刷直接加工化學(xué)蝕刻精細(xì)鑄造光蝕模面易磨損蒸鍍.分模線(xiàn)(Parting Line)設(shè)計(jì)案例將模具分開(kāi)取出廢品之分割面稱(chēng)為PL線(xiàn)產(chǎn)品外觀(guān)易於加工防止死角勿置精細(xì)處模具易加工.死角(Undercut)死角設(shè)計(jì)要點(diǎn): 滑塊.死角(Undercut)死角設(shè)計(jì)要點(diǎn): 設(shè)計(jì)變更.組配(Assembly)壓入法 (Press Fit)資料強(qiáng)度干涉體機(jī).組配(Assembly)卡入法 (Snap Fit)可拆解位移量應(yīng)力與應(yīng)變模具加工.組配(Assembly)機(jī)械鎖緊法 (Mechanical Fastenin