申請號: 201810033270.0

申請日: 2018.01.14

國(guo)家/省(sheng)市:中國(guo)重慶(85)

公開號: 107953258A

公開日: 2018.04.24

主(zhu)分類(lei)號:B24B 49/00(2012.01)

分類號: B24B 49/00(2012.01)

申請人: 重慶大學

發明人: 劉宗(zong)敏; 唐倩; 宋軍; 王(wang)時龍; 郭伏雨; 劉威

代理人: 呂小琴

代理機構:北京(jing)海虹嘉誠知(zhi)識產權代理有限(xian)公司(si)(11129)

申請(qing)人(ren)地址:重慶市沙坪壩區沙坪壩正街174號

摘要： 本發明提供的一種磨削加工中未變形切屑最大厚度預測方法，本發明通過獲取磨削用砂輪的(de)(de)(de)(de)工(gong)作表(biao)面(mian)幾何(he)參(can)數(shu)(shu)及(ji)運動(dong)參(can)數(shu)(shu)以(yi)及(ji)獲(huo)取工(gong)件(jian)的(de)(de)(de)(de)被磨(mo)削(xue)表(biao)面(mian)幾何(he)參(can)數(shu)(shu)及(ji)運動(dong)參(can)數(shu)(shu)，最終預測磨(mo)削(xue)加工(gong)中(zhong)未變形切屑最大厚(hou)度；本發明獲(huo)取磨(mo)削(xue)砂輪(lun)(lun)的(de)(de)(de)(de)表(biao)面(mian)參(can)數(shu)(shu)以(yi)及(ji)運動(dong)參(can)數(shu)(shu)，消(xiao)除現有技術(shu)中(zhong)所有的(de)(de)(de)(de)磨(mo)粒假(jia)設為(wei)(wei)球形且(qie)大小相(xiang)等(deng)以(yi)及(ji)磨(mo)粒位(wei)置在砂輪(lun)(lun)表(biao)面(mian)均勻分布且(qie)突起(qi)高度相(xiang)等(deng)而出(chu)現的(de)(de)(de)(de)技術(shu)問題(ti)，最終結果能夠反映磨(mo)粒的(de)(de)(de)(de)隨機(ji)分布的(de)(de)(de)(de)特(te)性，較為(wei)(wei)準確的(de)(de)(de)(de)對不同磨(mo)削(xue)參(can)數(shu)(shu)以(yi)及(ji)砂輪(lun)(lun)修整(zheng)參(can)數(shu)(shu)下的(de)(de)(de)(de)未變形切屑最大厚(hou)度進行(xing)預測，從而為(wei)(wei)磨(mo)削(xue)參(can)數(shu)(shu)以(yi)及(ji)砂輪(lun)(lun)修整(zheng)參(can)數(shu)(shu)的(de)(de)(de)(de)選擇提(ti)供理論依據。

主權利要求

一種磨(mo)(mo)(mo)(mo)削(xue)(xue)(xue)(xue)加(jia)工(gong)(gong)中(zhong)(zhong)(zhong)(zhong)未變(bian)(bian)形(xing)(xing)切(qie)屑(xie)最(zui)(zui)大厚(hou)度(du)(du)(du)(du)(du)(du)(du)預(yu)測方法，其(qi)特征在于(yu)：包(bao)括下(xia)列步驟：a.獲取磨(mo)(mo)(mo)(mo)削(xue)(xue)(xue)(xue)用(yong)砂(sha)(sha)(sha)輪的(de)(de)(de)工(gong)(gong)作表(biao)(biao)面幾何參(can)(can)數(shu)及運動(dong)參(can)(can)數(shu)；b.獲取工(gong)(gong)件的(de)(de)(de)被磨(mo)(mo)(mo)(mo)削(xue)(xue)(xue)(xue)表(biao)(biao)面幾何參(can)(can)數(shu)及運動(dong)參(can)(can)數(shu)；c.通(tong)過(guo)步驟a和b中(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)參(can)(can)數(shu)未變(bian)(bian)形(xing)(xing)切(qie)屑(xie)最(zui)(zui)大厚(hou)度(du)(du)(du)(du)(du)(du)(du)：Vtotal＝NtotalP1V1+NtotalP2V2+NtotalP3V3+…+NtotalPnVn(1)Pn=＆amp;amp;Integral;xn-1xn12＆amp;amp;pi;＆amp;amp;sigma;e-x22＆amp;amp;sigma;2dx---(2)Vn=13Samax,n＆amp;amp;CenterDot;ln＆amp;amp;lsqb;1-(lucut,nln)3＆amp;amp;rsqb;---(3)Ntotal＝vsNp(4)hcuz,max,n＝hcu,max-(dgmax-dgx,n)(5)ln=lc(1-dgmax-dgx,nhcu,max)---(6)lucut=＆amp;amp;Delta;cutdgx,nhcu,maxln---(7)Vtotal＝apvw(8)公式(1)至(8)聯立，利用(yong)迭(die)代法求出未變(bian)(bian)形(xing)(xing)切(qie)屑(xie)最(zui)(zui)大厚(hou)度(du)(du)(du)(du)(du)(du)(du)hcu,max；其(qi)中(zhong)(zhong)(zhong)(zhong)：Vtotal為(wei)(wei)(wei)(wei)(wei)單(dan)位(wei)時(shi)間(jian)(jian)(jian)內(nei)(nei)及單(dan)位(wei)寬度(du)(du)(du)(du)(du)(du)(du)下(xia)所(suo)有的(de)(de)(de)切(qie)削(xue)(xue)(xue)(xue)磨(mo)(mo)(mo)(mo)粒(li)所(suo)去除(chu)的(de)(de)(de)工(gong)(gong)件材料體(ti)積；Vn為(wei)(wei)(wei)(wei)(wei)每(mei)個(ge)區(qu)(qu)間(jian)(jian)(jian)中(zhong)(zhong)(zhong)(zhong)單(dan)個(ge)磨(mo)(mo)(mo)(mo)粒(li)切(qie)除(chu)掉的(de)(de)(de)體(ti)積；Samax,n為(wei)(wei)(wei)(wei)(wei)每(mei)個(ge)區(qu)(qu)間(jian)(jian)(jian)未變(bian)(bian)形(xing)(xing)切(qie)屑(xie)最(zui)(zui)大厚(hou)度(du)(du)(du)(du)(du)(du)(du)的(de)(de)(de)橫截面積；ln為(wei)(wei)(wei)(wei)(wei)每(mei)個(ge)區(qu)(qu)間(jian)(jian)(jian)磨(mo)(mo)(mo)(mo)粒(li)的(de)(de)(de)實(shi)際(ji)接觸長(chang)度(du)(du)(du)(du)(du)(du)(du)；Ntotal為(wei)(wei)(wei)(wei)(wei)單(dan)位(wei)寬度(du)(du)(du)(du)(du)(du)(du)及單(dan)位(wei)時(shi)間(jian)(jian)(jian)內(nei)(nei)砂(sha)(sha)(sha)輪表(biao)(biao)面層(ceng)轉(zhuan)過(guo)的(de)(de)(de)軌(gui)跡長(chang)度(du)(du)(du)(du)(du)(du)(du)內(nei)(nei)的(de)(de)(de)磨(mo)(mo)(mo)(mo)粒(li)總數(shu)量；vs為(wei)(wei)(wei)(wei)(wei)砂(sha)(sha)(sha)輪外圓(yuan)表(biao)(biao)面線速度(du)(du)(du)(du)(du)(du)(du)；hcuz為(wei)(wei)(wei)(wei)(wei)磨(mo)(mo)(mo)(mo)粒(li)的(de)(de)(de)切(qie)入深(shen)(shen)度(du)(du)(du)(du)(du)(du)(du)；dgmax、dgavg和dgmin分別(bie)是砂(sha)(sha)(sha)輪最(zui)(zui)大磨(mo)(mo)(mo)(mo)粒(li)直(zhi)徑(jing)、平(ping)均(jun)磨(mo)(mo)(mo)(mo)粒(li)直(zhi)徑(jing)和最(zui)(zui)小磨(mo)(mo)(mo)(mo)粒(li)直(zhi)徑(jing)；Np為(wei)(wei)(wei)(wei)(wei)砂(sha)(sha)(sha)輪表(biao)(biao)層(ceng)在dgmax厚(hou)度(du)(du)(du)(du)(du)(du)(du)內(nei)(nei)單(dan)位(wei)面積內(nei)(nei)含(han)有的(de)(de)(de)磨(mo)(mo)(mo)(mo)粒(li)數(shu)；lc為(wei)(wei)(wei)(wei)(wei)磨(mo)(mo)(mo)(mo)削(xue)(xue)(xue)(xue)弧(hu)長(chang)；△cut為(wei)(wei)(wei)(wei)(wei)最(zui)(zui)小切(qie)削(xue)(xue)(xue)(xue)系數(shu)；dgx,n為(wei)(wei)(wei)(wei)(wei)每(mei)個(ge)區(qu)(qu)間(jian)(jian)(jian)中(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)磨(mo)(mo)(mo)(mo)粒(li)平(ping)均(jun)高度(du)(du)(du)(du)(du)(du)(du)；ap是磨(mo)(mo)(mo)(mo)削(xue)(xue)(xue)(xue)深(shen)(shen)度(du)(du)(du)(du)(du)(du)(du)；vw為(wei)(wei)(wei)(wei)(wei)工(gong)(gong)件外圓(yuan)表(biao)(biao)面線速度(du)(du)(du)(du)(du)(du)(du)；σ為(wei)(wei)(wei)(wei)(wei)方差(cha)；所(suo)述區(qu)(qu)間(jian)(jian)(jian)為(wei)(wei)(wei)(wei)(wei)：將等分為(wei)(wei)(wei)(wei)(wei)n段，形(xing)(xing)成(cheng)n個(ge)間(jian)(jian)(jian)，且區(qu)(qu)間(jian)(jian)(jian)長(chang)度(du)(du)(du)(du)(du)(du)(du)為(wei)(wei)(wei)(wei)(wei)△足夠小，分別(bie)為(wei)(wei)(wei)(wei)(wei)x0,x1,…,xn其(qi)中(zhong)(zhong)(zhong)(zhong)其(qi)中(zhong)(zhong)(zhong)(zhong)：n為(wei)(wei)(wei)(wei)(wei)1到n的(de)(de)(de)正整數(shu)；Δd為(wei)(wei)(wei)(wei)(wei)砂(sha)(sha)(sha)輪修(xiu)整深(shen)(shen)度(du)(du)(du)(du)(du)(du)(du)；δ＝dgmax-dgmin。