压住材料。克服传统的模具设计结构，在卸料板上开出容料间隙(即模具闭合时，卸料板与凹模贴合，而容纳材料处卸料板与凹模的间隙为材料厚t-0.03～0.05mm)。如此，冲压中卸料板运动平稳，而材料又可被压紧。关键成形部位，卸料板一定做成镶块式结构，以方便解决长时间冲压所导致卸料板压料部位产生的磨(压)损，而无法压紧材料。Pressthematerial.Inordertoovercomethetraditionalmolddesignstructure,theclearanceofmaterialisopenedonthedischargeplate(i.e.,whenthedieisclosed,thedischargeplateandthediearefitted,andthegapbetweenthedischargeplateandthedieist-0.03to0.05mm).Inthisway,thedischargingplatemoves***oothly,andthematerialcanbepressedtightly.Inthekeyformingpart,thedischargeplatemustbemadeintoaninlaidstructuretofacilitatethesolutionofthegrinding(pressure)losscausedbythepressingpartoftheunloadingplateforalongtime,andthematerialcannotbepressed.在冲压件行业里，冲压有时也称板材成形,但略有区别。所谓板材成型是指用板材、薄壁管、薄型材等作为原材料进行塑性加工的成形方法统称为板材成形，此时，厚板方向的变形一般不着重考虑。Inthestampingindustry,stampingissometimesreferredtoassheetmetalforming,butthereisaslightTheso-calledsheetformingmeanstheformingmethodofplasticformingwithsheet,thin-walledtubeandthinmaterialasrawmaterial,whichiscalledsheetforming.Atthistime,thedeformationofthethickplateisgenerallynotc***idered.清除冲压机床滑块底面、工作台面（或垫板平面）以及模具的上、下模座平面内的任何杂物或***。手工扳动冲压机床飞轮（或操纵点动按钮），调整上滑块到上死点位置，并转动调节螺杆，将连杆长度调到***短（即闭合高度大）。Removeanymaterialorforeignobjectonthebottomofthestampingmachineslide,workingtable(orpadplane),andtheupperandlowerdiebaseofthemold.Manuallypullthestampingmachineflywheel(orpointmovingbutton),adjusttheupperslidertotheupperdeadpoint,androtatetheadjustingscrew,thelengthoftheconnectingrodtotheshortest(i.e.themaximumheightoftheclosedheight).)