拉削注意事項(xiàng)

　　拉刀切削負(fù)荷的計(jì)算

　　Calculation of pulling force

　　預(yù)想負(fù)荷(kgf) =切削寬度(mm)x1刃的切深(mm)x單位面積切削阻力(kgf/mm²) x同時(shí)切削刃數(shù)安全負(fù)荷(kgf) = 1.8x預(yù)想負(fù)荷(kgf)

　　預(yù)想負(fù)荷是拉刀在普通狀態(tài)下加工時(shí)所必需的切削力。隨著拉刀刀刃的不斷磨損.就需要逐斬加大切削力, 但加大到一定程度后拉刀會(huì)破損 , 或者因拉床的維護(hù)狀態(tài)不良而在切削中停機(jī)。安全負(fù)荷就是指為了防止出現(xiàn)上述情況的允許切削力。

　　Calculation of pulling force Expected force(Kgf) =Cutting width x Cutting depth/1 tooth(mm) x specific cutting resistance(kgf/mm²) x number of simultaneous Safety load(kgf)=1.8 x Expected force(kgf).

　　Expected force means that necessary cutting force for broaching under norma1 condition. Safety load is permitted cutting force.

　　拉刀全長(zhǎng)和拉床行程的關(guān)系

　　Broach cutter length and machines stroke

　　拉刀的長(zhǎng)度要受到拉床的行程及夾具的限制。

　　拉刀刃長(zhǎng)+后部柄長(zhǎng)(MAX)= (最大行程) - (工件切削長(zhǎng)度)

　　所需行程=刃長(zhǎng)+工件切削長(zhǎng)度+后柄長(zhǎng)度<拉床最大行程

　　由于產(chǎn)品在不斷的改進(jìn)中,樣本技術(shù)參數(shù)如有改動(dòng),恕不另行通知。

　　Broach cutter length and machines stroke Broach length is limited by machine stroke and jig/fixture

　　Broach cutter teeth length+length of rear shank=(Max stroke)-(cutting length)

　　Necessary stroke=Teeth length+length of rear shank+Broaching length<broaching machine stroke(max)

　　Description and specifications given in this catalogue are subject to modification without notice.

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