外文翻譯--拉深件的廢品種類產(chǎn)生的原因及預(yù)防

1、<p><b>　　附件 外文翻譯</b></p><p>　　拉深件的廢品種類產(chǎn)生的原因及預(yù)防</p><p>　　零件臂部破裂，凸模起皺，產(chǎn)生的原因，壓邊力太小，凸緣部分起皺，無法進(jìn)入凹模型腔而拉裂。預(yù)防方法，加大壓邊力。</p><p>　　壁部拉裂，產(chǎn)生的原因，材料承受的頸向拉應(yīng)力太大，造成危險(xiǎn)斷面的拉裂，預(yù)防方法，減少壓邊力

2、，增大凹模圓角半徑，加大潤滑，或是增加材料塑性。</p><p>　　凸緣起皺，產(chǎn)生的原因，凸緣部分壓邊力太小，無法抵制過大的切向應(yīng)力造成切向壓應(yīng)力造成的切向變形，失去穩(wěn)定，形成皺紋。預(yù)防方法，增大壓邊力或應(yīng)當(dāng)?shù)脑黾硬牧虾穸?lt;/p><p>　　零件邊緣呈鋸齒狀。產(chǎn)生的原因，毛坯邊緣有毛刺。預(yù)防的方法，修整毛坯落料刃口以消除毛坯邊緣毛刺。</p><p>　　零件邊

3、緣 高底不一，產(chǎn)生的原因，毛坯與凸，凹模中心不合或材料厚度不均以及凸模圓角半徑，模具間隙不君。預(yù)防方法，調(diào)整定位，校均模具間隙和凹模圓角半徑。</p><p>　　危險(xiǎn)斷面顯著邊薄，產(chǎn)生的原因，模具圓角半徑過大，壓邊力太小，材料承受的徑向拉應(yīng)力接近，引起危險(xiǎn)斷面縮徑。預(yù)防方法，加大模具圓角半徑和間隙，毛坯涂上合適的潤滑劑。</p><p>　　零件部位拉脫，產(chǎn)生的原因，模具圓角半徑太小，材

4、料實(shí)際上處于切割狀態(tài)。預(yù)防方法，加大凹模圓角半徑。</p><p>　　零件口緣褶皺，產(chǎn)生的原因，凹模圓角半徑太大，在拉深的過程中末階段，脫離了壓邊圈但尚未超過凹模圓角的材料，壓邊圈壓不到，起皺后被繼續(xù)拉如凹模，形成口源褶皺。預(yù)防方法，減少凹模圓角半徑或采用弧形壓邊圈。</p><p>　　錐形件的斜面或板球形狀的腰部起皺，產(chǎn)生原因，拉深開始時(shí)，大部分材料處于懸空狀態(tài)，加大壓邊力太小，凹模

5、圓角半徑太大或潤滑油過多，使徑向拉應(yīng)力太小，材料在切向壓應(yīng)力的作用下，勢必失去穩(wěn)定而起皺。預(yù)防方法，增大壓邊力或采用凹模圓角半徑；亦可加厚材料或幾片毛坯疊在一起拉深。</p><p>　　盒形件角部破裂，產(chǎn)生的原因，模具圓角半徑太大，間隙太小或零件角部變形程度太小，導(dǎo)致角部拉裂。預(yù)防方法，加大圓角半徑幾圓角間隙，或增加拉深次數(shù)。</p><p>　　零件底部不平整，產(chǎn)生原因毛坯不平整，頂桿

6、與零件接觸面積太小或緩沖器彈力不夠。與方方法，平整毛坯或改善頂料裝置。</p><p>　　盒形狀直壁部分不挺直，產(chǎn)生的原因，角部間隙太小，多余材料、向側(cè)壁幾壓，失去穩(wěn)定，產(chǎn)生起皺。預(yù)防方法，放大角部間隙。</p><p>　　零件壁部拉毛，產(chǎn)生的原因，模具工作平面或圓角半徑上有毛刺，毛坯表面或潤滑油中有雜質(zhì)，拉傷零件表面，一般叫拉絲。預(yù)防方法，許修磨拋光模具工作平面或圓角，清潔毛坯，使用

7、干凈的潤滑油。</p><p>　　盒形狀角部向內(nèi)折攏，局部起皺。產(chǎn)生的原因，材料角部壓邊力太小，起皺后拉如凹模行腔，所以局部起皺。預(yù)防方法，加大壓邊力或增大角部毛坯面積。</p><p>　　階梯形零件肩部破裂，產(chǎn)生的原因，凸肩部分成型時(shí)，材料在母線方向承受過大拉應(yīng)力，導(dǎo)致破裂。預(yù)防方法，加大凹木及肩部分圓角。或改善潤滑條件，選用塑性較好的材料。</p><p>

8、　　零件完整，但呈歪紐狀，產(chǎn)生的原因，模具沒有排氣孔或排氣孔太小、堵塞、以及頂料桿跟接觸面太小，頂料時(shí)間太早等其他原因。預(yù)防方法，鉆、擴(kuò)大或疏通模具排氣孔，整修頂料裝置。</p><p>　　破裂或裂紋，產(chǎn)生的原因，壓邊力太大或不均；凸?；虬寄５拈g隙過小； 拉身筋布置不當(dāng)；凹?？诨蚶斫畈蹐A較半徑太??；壓邊圈粗糙度高；也許</p><p>　　潤滑不足或不當(dāng)； 原材料不符合要求；材料局部拉

9、深太大或不準(zhǔn)確。預(yù)防方法，調(diào)節(jié)外滑塊螺栓，減少壓邊里；調(diào)整模具間隙；改變凹?；蚶罱畈鄣膱A較半徑；降低壓邊圈粗糙度；改善潤滑條件；更換原材料。</p><p>　　零件的剛性差，彈性畸變，產(chǎn)生的原因，壓邊力不夠；毛坯尺寸過??；拉深筋少或布置不當(dāng)；材料塑性變形和加工硬化不足。預(yù)防方法，加大加邊力，增加毛坯尺寸；增加拉深筋或改善其分布位置。</p><p>　　皺紋或皺褶，產(chǎn)生的原因，拉深力太

10、小或不足；拉深筋太少或不合理；凹?？趫A角半徑太大；壓邊圈不平，里松外緊；潤滑油太多，吐沫位置不當(dāng)；毛坯尺寸太??；材料過軟；壓邊圈形狀不當(dāng)。預(yù)防方法，調(diào)節(jié)外滑塊螺栓，加大壓邊力；改變拉深筋數(shù)量、位置、和松緊；減少凹?？趫A角半徑；休整壓邊面；潤滑適當(dāng)；加大毛坯尺寸；更換材料；休整壓邊形狀；</p><p>　　以上所說的，就是實(shí)際生產(chǎn)中所出現(xiàn)的一些問題。</p><p>　　Pull the

11、species, output reason and prevention of discarding of deep piece</p><p>　　Spare parts arm the department break, and the convex mold shrivel, output reason, press the side dint too small, the convex part sh

12、rivel, and can't enter the cave model but pull the .The prevention method, enlargement presses the side dint.</p><p>　　Wall department neck for pulling the , output reason, material bearing the direct

13、ion pull should the dint is too big, and result in the pulling of dangerous cross section the , and prevent the method, and reduce to press the side dint, and enlarge the radius of cave mold circle Cape, enlargement the

14、lubrication, or increase the material the </p><p>　　The convex origin , output reason, convex part presses the side dint too small, can't boycott big slice direction should the dint result in to slice

15、direction to press should what dint result in slice direction to transform, lose stable, formation crease.Prevention method, enlarge to press the side dint or should of gain material thickness</p><p>　　The s

16、pare parts edge reports to saw the dentation.The hairiness of output reason, semi-finished product edge stabs.Prevention of method, fix the of whole semi-finished product blade then to dissolve the semi-finished product

17、edge the hair to stab.</p><p>　　The high bottom of spare parts edge is different, and the output reason, semi-finished product is out of accordance with convex, cave mold center or the material thickness is

18、not and all and the radius of convex mold gentleman.Prevention method, adjust fixed position, and the is all molding tool cleft is with the radius of cave mold circle Cape.</p><p>　　The dangerous cross sect

19、ion shows the side thin, radius of output reason, molding tool circle Cape over big, press the side dint too small, material path that bear the direction pull should the dint near to, cause the dangerous cross section

20、the path.Prevention method, enlargement molding tool circle Cape the radius draw with cleft, semi-finished product ascend fit of lubricant.</p><p>　　The spare parts part pulls to take off, and the radius of

21、output reason, molding tool circle Cape is too small, and the material in practice be placed in to incise the appearance.Prevention method, enlargement radius of cave mold circle Cape.</p><p>　　Spare parts p

22、lait the , output reason, radius of cave mold circle Cape is too big, at pull the end stage of deep process inside, and escape from to press the side turn but not yet exceed the material of Cape circle of cave mold, and

23、press the side turn to can not press, shrivel the empress to is continuously pulled such as the cave mold, formation plait .Prevention method, reduce the radius of cave mold circle Cape or adopt the arc-shaped to press

24、 </p><p>　　form piece the loins for of inclined plane or cricket shape shrivel, produce the reason, and pull the deep beginning, big and part of materials be placed in the the appearance, enlargement to pre

25、ss the side dint too small, the radius of cave mold circle Cape is too big or the lubricant is excessive, and make the path direction pull should the dint is too small, and the material is under slice direction to press

26、should the dint's function, necessarily lose the stability but shrivel.Prevention m</p><p>　　Box form piece the Cape department break, and the radius of output reason, molding tool circle Cape is too bi

27、g, and the cleft is too small or spare parts Cape the department transform the degree too small, cause the Cape department to pull the .Prevention method, enlargement circle Cape radius cleft of several circle Capes, or

28、the gain pull the deep number of times.</p><p>　　Spare parts bottom gravamen only, produce the reason semi-finished product gravamen the only, crest the pole and spare parts to get in touch with the area too

29、 small or the buffer elasticity is not enough.With the device of square method, neat semi-finished product or improvement crest.</p><p>　　Box shape the wall part is not straight, and the cleft of output re

30、ason, Cape department is too small, surplus material, is several to wall to press, lose the stability, and produce to shrivel.Prevention method, enlarge a Cape department cleft.</p><p>　　Spare parts wall the

31、 department pull the hair, output reason, molding tool work the flat surface or circle Cape the radius top the hairiness to stab, and there is 雜 quality in the semi-finished product surface or lubricant, and pull the wou

32、nd spare parts the surface, and generally call pull the silk.Prevention method, allow to fix to whet the light the molding tool work the flat surface or circle Cape, clean semi-finished product, clean lubricant of usage

33、.</p><p>　　Box shape Cape the department break the part to inside to shrivel.The department of output reason, material Cape presses the side dint too small, shrivel to behind pull such as the cave mold line

34、 , therefore partial shrivel.The prevention method, enlargement presses the side dint or enlarge the Cape department the semi-finished product area.</p><p>　　Stairs form spare parts shoulder department break

35、, output reason, convex shoulder part type hour, material is in the mother line the direction bore big pull should dint, cause the blowout.Prevention method, enlargement Cape of part of circles of cave wood and shoulder.

36、Or the improvement lubricate the term, choose to use the good mat</p><p>　　The spare parts is complete, but report the roughly shore Prevention method, drill, extend or dredge the molding tool row the pore,

37、and renovate a device.</p><p>　　Blowout or crack, output reason, press the side dint too big or not and all;The cleft of the convex mold or cave mold over small; Pull the body to arrange not appropriate;Ca

38、ve mold or pull the body slot the circle than the radius is too small;Press the side turn the rough degree high;Perhaps</p><p>　　Lubricate the lack or not appropriate; The original material not agree withes

39、 to match the request;The material part pulls deep too big or not accurate.Prevention method, regulate the stud bolt of outside piece, and reduce to press the side;Adjust the molding tool cleft;Change cave mold or pull

40、the circle of the deep slot than radius;Lower to press the side turn the rough degree;The improvement lubricates the term;Replace the original material.</p><p>　　Spare parts of rigid and bad, flexibility mu

41、tation, enough;Semi-finished product size over small;Pull the deep little or arrange not appropriate;Material the transform with process to harden the lack.The prevention method, enlargement adds the side dint, and

42、increase the semi-finished product size;The gain pulls the deep or improvement its distribute the position.</p><p>　　Crease or plait, output reason, pull the deep dint too small or not enough;Pull the deep

43、 too little or not reasonable;Cave mold circle</p><p>　　Cape the radius is too big;Press a gravamen, pine the outside is tight;The lubricant is too many, and vomit the position not appropriate;The semi-fin

44、ished product size is too small;Material over soft;</p><p>　　Press a shape not appropriate.Prevention regulat the stud bolt of outside piece, enlargement to press the side dint;The changes pulls the deep t