问题补充说明：Since the cut blank will be retained in the die block by friction , some means of ejecting on the ram upstroke must be provided . A knockout assembly consists of a plate , a push rod , and a retaining collar . The plate isa loose fit with the die opening contour , and moves upward as the blank is cut . Attached to the plate , usuallyby rivets , is a heavy push rod which slides in a hole in the shank of the die set . This rod projects above the shank , and a collar retains and limits the stroke of the assembly . Near the upper limit of the ram stroke , a knockout bar in the press will contact the push rod and eject the blank . It is essential that the means of retaining the knockout assembly be secure , since serious damage would otherwise occur. In the ejection of parts , positive knockouts offer the following advantages over spring strippers where the partshape and the die selections allow their use: 1. Automatic part disposal . The blank , ejected near the top of the ram stroke can be blown to the back of thepress , or the press may be inclined and the same result obtained . 2. Lower die cost . Knockouts are generally of lower cost than spring strippers. 3. Positive action . Knockouts do not stick as spring strippers occasionally do. 4. Lower pressure requirements . There are no heavy springs to be compressed during the ram descent.
Sincethecutblankwillberetainedinthedieblockbyfriction,somemeansofejectingontheramupstrokemustbeprovided.由于摩擦会导致切下的毛坯残留迫批轮片刻时府在模块里，所以必须在顶出时提供一个向上的冲力。
Aknockoutassemblyconsistsofaplate,apushrod,andaretainingc若回章员ollar.
顶出的热些守担已味安装部件包括一个金属板，推杆，定位圈。
Theplateisa正世滑报loosefitwiththedieopeningcontour,andmovesupwardastheblankiscut.该板与开模线是宽松式的，并且在毛坯切割时向上移动。Attachedtotheplate,usuallybyrivets,isaheavypushrodwhichslidesinaholeintheshankofthedieset.通常，利用铆钉将模柄孔中滑动的推杆安装在金属控京斯势意药板上。Thisrodprojectsabovetheshank,andacollarretainsandlimitsthestrokeoftheassembly.来自人们将该推杆设计在模柄上，并安装了定位圈，来减少安装带来的冲击力。N夜eartheupperlimitoftheramstroke,aknockoutbarinthepresswillcontactthepushroda360问答ndejecttheblank.接近限制冲力最高点时，压力推动下的脱模杆会与推杆接触并将毛坯顶出。
Itisessentialthatthemeansofretainingtheknockoutassemblybesecure,sinceseriousdamagewouldotherwiseoccur.保证脱模安装的安全性是十训说分重要的，否则一再威促从情贵府见础些严重的危害就会发生快。
Intheeje货采似硫ctionofparts,positiveknockoutsofferthefollowingadvantagesoverspringstripperswherethepartshapeandthedieselectionsallowtheiruse:在零件顶出过程中，正确的顶出方式比弹簧脱模机的效果要好，因为零件外形和模具部件会对脱模机有要求。
1.Automaticpartdisposal.The振也blank,ejectednearthetopoftheramstrokecanbeblowntothebackofthepress,orthepressmaybeinclinedandthesameresultobtained.自动销毁零件。顶出接近冲力最高点时，毛坯会被冲到压力后方，或者压力可能倾斜，并达到同样的效果。
2.Lowerdiecost.Kno合格操减商妒ckoutsaregenerallyoflowercostthanspringstrippers.较低的模具消耗。总体来说，顶出要比弹簧脱模机成本少。
3.Positiveaction.Knockoutsdonotstickasspringstrippersoccasionallydo.正确的养杂推犯刚屋升娘自方式。弹簧脱模机通常会有粘合现象，顶出则不会。
4.Lowerpressurerequirements.Therearenoheavyspringstobecompressedduringtheramdescent.较低的压力要求。没有任何重型弹簧能够承呀至持是零受冲击时的压力。
完全是人脑翻译。本人接触模具行业一个月，如有不足请多包涵。
希望对你有帮助。O(∩_∩)O
标签：英语翻译,模具
