弓鋸床
裝(zhuang)有(you)鋸(ju)條(tiao)的(de)鋸(ju)弓(gong)作(zuo)往(wang)複(fu)運(yun)動(dong),以(yi)鋸(ju)架(jia)繞(rao)一(yi)支(zhi)點(dian)搖(yao)擺(bai)的(de)方(fang)法(fa)進(jin)給(gei),機(ji)床(chuang)結(jie)構(gou)簡(jian)單(dan),體(ti)積(ji)小(xiao),但(dan)功(gong)率(lv)較(jiao)低(di)。弓(gong)鋸(ju)床(chuang)鋸(ju)條(tiao)的(de)運(yun)動(dong)軌(gui)道(dao)有(you)直(zhi)線(xian)和(he)弧(hu)線(xian)兩(liang)種(zhong)。弧(hu)線(xian)運(yun)動(dong)時(shi)鋸(ju)弓(gong)繞(rao)一(yi)支(zhi)點(dian)搖(yao)擺(bai)一(yi)小(xiao)視(shi)點(dian),每(mei)個(ge)鋸(ju)齒(chi)的(de)切(qie)入(ru)量(liang)較(jiao)大(da),排(pai)屑(xie)簡(jian)單(dan),功(gong)率(lv)較(jiao)高(gao),新(xin)式(shi)弓(gong)鋸(ju)床(chuang)大(da)多(duo)選(xuan)用(yong)這(zhe)種(zhong)方(fang)法(fa)。
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