DFM案例分析.ppt

产品1：这个产品还有一件镜像体，这里不重复分析。,70.67,2.64,Part 1:RH and LH is mirrored so only one of it is shown in this report.,注意，本文件底色绿色部分的翻译文本为比较合适的表述效果。,镶针深入0.10MM封胶，避免出披锋。,To avoid occur flash,suggest to let insert go deep into seal off surface 0.01mm,Suggest to create a 0.1mm concave at core(cavity)steel for the pin insert seal off in order to optimize/improve the flash direction,if any.,Improve:改善Optimize：优化Tuning：调整,if any:如果有的话In case,0.1MM,前后模镶针碰穿，避免出现段差，前模镶针比后模镶针做大0.1MM.,Due to core insert pin shutting off,suggest to make the size of cavity insert pin biger 0.1mm than core insert pin size to avoid occur lever mark,There is shutoff between core pins,we suggest to make cavity side core pin 0.1mm bigger.,如图，红色部分出前模，产品减胶0.05MM,Indicated red surface for cavity,suggest to remove material 0.05mm,分型面与骨位底面平行,PL surface be parallel to the bottom surface of rib,The surfaces in red is formed by the cavity which need to create positive draft by removing material,max.0.05mm,Positive：正面的Negative:负面的Draft:出模角MMC:Maximum Material Condition,Parting line will be in parallel to the bottom surface this rib.,所指红色面直身，建议往前模加胶拨模2度，最大加胶0.06MM详见修改后的产品3D,所指红色面倒扣，建议往前模拨模0.3度，最大加胶0.19MM详见修改后的产品3D,所指红色面倒扣，建议往前模加胶拨模2度，最大减胶0.13MM详见修改后的产品3D,Indicated red surface without draft angle,suggest to apply 2 degree at the cavity side,max.material added is 0.06mm,more details refer to modified part 3D,Indicated red surface is undercut,suggest to apply 0.3 degree at the cavity side by adding material,max.material added is 0.19mm,more details refer to modified part 3D,Indicated red surface is undercut,suggest to apply 2 degree at the cavity side by removing material,max.material removal is 0.19mm,more details refer to modified part 3D,There is no draft in the red surfaces,suggest to apply 2 degree in cavity direction by adding material,max.material added is 0.06mm,please refer to part 3D data updated/modified by us.,Update:升级Modify:更改Latest=updated:最新,Undercut in red surface as indicated.,所指红色面倒扣，建议往行位减胶拨模2度，最大减胶0.05MM详见修改后的产品3D,为避免行位薄钢建议所指红色面加胶到行位分型面，最大加胶0.09MM详见修改后的产品3D,为避免行位薄钢建议所指红色面加胶到行位分型面，最大加胶0.05MM详见修改后的产品3D,Suggest to add material into parallel with PL to avoid slide too thin,max.material added is 0.09mm,more details refer to modified part 3D,Indicated red surface is undercut,suggest to apply 2 degree at the cavity side by removing material,max.material removal is 0.05mm,more details refer to modified part 3D,Suggest to add material into parallel with PL to avoid slide too thin,max.material added is 0.05mm,more details refer to modified part 3D,Thin steel condition in slide at red surfaces,suggest to increase material to level up the surface to parting line,max.material added is 0.09mm,please refer to the updated data for your approval.,Level upFor your approval.,6.1,The insert is too small,whick is no space to make water-line,so we propose to apply the material is made of BeCu.,后模镶件太小，运水无法到达胶位上面,This insert is too small to apply water line,we suggest to apply BeCu for better cooling.,0.5,修改前,修改后,0.5,2,2,第2色,It is only 0.5mm steel to sealing-off that is too thin，propose to increase another 1.5mm minimum(the red surface)as indicated,Then the steel thickness becomes 2mm for sealing.,2nd shot,Before,After,如图示第二色红色面处出行位（如下图）封胶面出现薄钢（0.5mm）影响第二色行位封胶钢料强度，建议此处红色面处减胶由0.5mm变更至2mm，OK?,There is 0.5mm steel for seal-off which is too thin,propose to increase 1.5mm min.as indicated in red,so that the steel thickness becomes 2mm for seal off.,To avoid getting part surface scrached when the slide returns back during the 2nd shot and increase the slide shrengh,suggest to apply 3 degree by removing material 0.3mm in red surface slide direction.,Indicated green surface without angle draft in slide direction,为避免第二色行位成型复位插烧坏产品及增加行位强度，建议如图所指红色面延行位出模方向做3减胶0.3拔模，OK?,如图绿色面为出行位方向直升面,To avoid red surface being scratched during the slide travelling,suggest to apply 3 degree draft at slide movement direction by removing material,max.removal is 0.3mm,which is also better for slide seal off to avoid galling.,Slide movement directionTravellingRemoval:去除量Galling:磨伤,如右图示按粉色面延伸下去，延伸面会与红色面有0.04间距，为便于行位分型加工，建议红色面替平粉色面，OK?JL7B-19K617-A-PIA-6B Slider Knob Substrate w Overmold Rev 0产品问题点一样,Slide,Indicated pink surface,extend surface will occur 0.04mm distance between with red surface,suggest to changed the red surface be parallel to pink surface,the same as JL7B-19K617-A-PIA-6B Slider Knob Substrate w Overmold Rev 0,The pink surface is 0.04mm off the plan for red surface,suggest to level up the pink surface in order to simplify the machining.,如图示红色面出前模倒扣（另一侧一样），建议红色面延前模出模方向做3减胶0.08mm拔模，OK?JL7B-19K617-A-PIA-6B Slider Knob Substrate w Overmold Rev 0产品问题点一样,Indicated red surface is undercut(the same as other side),suggset to apply 3 degree by removing material 0.08mm in red surface extend direction,the same as JL7B-19K617-A-PIA-6B Slider Knob Substrate w Overmold Rev 0,设计师要求：不同问题点用不同颜色，放大图片必须与全景图片相同颜色、相同角度。,如图示产品大面处间距只有0.014mm，为便于加工，产品此面能否修该成一致,OK?,0.014,JL7B-19K617-A-PIA-6B Slider Knob Substrate w Overmold Rev 0产品问题点一样,Indicated large surface distance is 0.014mm.suggest to modify the surface be consistent to machine convenient.,The same as JL7B-19K617-A-PIA-6B Slider Knob Substrate w Overmold Rev 0,Distance between the indicated surfaces is 0.014mm,suggest to uniform the surface in order to simplify the machine.,Uniform:试,一致Simplify:简化,13,修改前,如图红色面所示减胶0.5，有一平位出来封胶,(十个处)。,平位封胶,软胶件,Before.,After,2nd shot part.,Suggest to remove 0.5mm material to make a flat surface to make a good seal off condition for 2nd shot.,Make flat for better seal off.,修改后,Remove plastic from red surface to create a landing surface for better seal-off.,Landing:碰（穿）,Existing,Proposal,OK,因为此处硬胶悬空，啤软胶时会将硬胶击穿，,修改后,After,To optimize the mold structure,Suggest to rotate the highlighted features by 18 degrees.Modified part CAD data will be provided for approval later.,Suggest to rotate the highlighted features by 18 degrees.,所以缺口位置向两边移18度,The hard plastic is not supported by steel and hence it may be broken by 2nd shot material flow(melt),suggest to,此红色面为第二色封胶面,建议减胶加大斜度到30度有利于封胶,减胶0.61),修改前,修改后,Before.,After,Suggest to increase the chamfer to 30 degree by removing material to make a good seal off condition for 2nd shot.,16,胶位较厚可能有缩水，建议做减胶如图红色面所示.,3.7,3.7MM,修改前,修改后,建议骨位大头由2.0减到1.6MM并移除根部R角,中间骨位出后模为直身建议减胶做出模角单边1度出后模,1.6MM,A,A,A-A,A-A,B,B,B-B,B-B,修改后,修改前,1.6MM,1.6MM,2.0MM(3X),Before,After,After,Before,To avoid sink mark issue,suggest to reduce the thickness at bottom from 2mm to 1.6mm.Also need apply 1 degree draft for this rib features.,Too thick to create sink mark issue,suggest core off material to improve.,To improve the sink mark issue,suggest to reduce the thickness at the root,Potential sink mark concern due to the thick section,suggest to core out locally for improvement.,Core-out:掏空Locally:局部Potential:可能,第二色产品尖点进胶，进胶位置做0.3深凹点,Hot drop to direct to the part,We propose to add 0.3 Recess for gate vestige,Second shot,此处不能放进胶点，热咀与胶位干涉，此段软胶建议取消。,Its not reasonalbe as indicated by the circle,beacuse hot tip and plastic location will be impacted by each other,so suggest to cancel flexible material.,Propose to create a simple(0.3mm depth)to hide the gate vestige.,Ok,Its not feasible to apply hot tip here because there is confliction between the hot drop and the hard plastic.We suggest to eliminate/remove the runner feature here.,产品红色面要减胶改前模出，因圆球要强脱出模，前模开后再顶出,We propose to move the red surfaces to cavity side.Please confirm.,Currently,Proposal,Suggest to reverse the draft in the red surfaces by removing material,so that it can be formed by the cavity steel,because we need space for strip-off at the ball shape feature after mold is opened.,建议产品红色面单边加胶加大0.2mm，注塑第二色时碰孔不错位,Propoal,Proposal,In order to shut-off well in 2nd shot,we proopose to add 0.2mm resin per side on these ribs in 1st shot.,Suggest to increase the material in each side of the indicators(0.2mm per side),which can make the indicators more robust during 2nd shot.,此处有圆角过度，二射不好封胶，建议做平上平面，前模后模共四处,修改后,There is a C angle and the second injection is not easily to seal plastic,and suggest to cancel the step by increasing the height to parallel the hige surface at cavity and core in total 4 point.,modified,It is not good for 2nd shot seal off at the radius,suggest to eliminate the radius by leveling up the other surface as shown in left hand side picture,in total 4 places.,1.0MM,1.5MM,6.0MM,第二色单咀尖点式进胶，增加一段胶位辅助进胶，尺寸如下图所示。,Second shot:HRS drop(tip)into part,and add a length of plastic to contribute melt filling as indicated in the picture.,Suggest to create a runner on top of the 1st shot for gating.,Gate size,1.5mm,45 deg.,6mm,1.5mm,60 deg.,热流道转4点潜进胶，具体位置待模流分析确定,4 drops HRS,sub-gate,Gate location will finalize after mold flow study.,4 hot drops to cold runner sub-gate.Gate location to be finalized by Moldflow study.,0.8mm,1.5mm,5mm,6mm,5mm,热咀,注：走胶平衡要等模流分析后再调整。,Melt filing balance will finalize after mold flow study.,Shoot balance to be adjusted/optimized as per moldflow study.,