钻床工时计算表(实用)

1、,制定钻削工时定额,加工后孔径D（mm),加工前孔径d(mm),切削深度Ap(mm),孔的长度L（mm),第一步:,38,0,19,11,确定切削深度Ap,注:Ap为钻头切入深度,当工件孔径D35mm时,一般是一次钻出,即钻头直径 , d0=D当工件孔径D35mm时,分两次钻出,一般第一把钻头直径, d1=(0.5-0.7)D,第二把钻头直径d2=D,表一:高速钢钻头钻钢件时的进给量,钢的抗拉强度b(Kg/mm), 钻头直径d0(mm),Q235/Q345,80以下,45,80-100,2,0.05-0.06,0.04-0.05,0.03-0.04,0.04-0.05,0.03-0.04,0.

2、02-0.03,4,0.08-0.10,0.06-0.08,0.06-0.08,0.06-0.08,0.04-0.05,0.03-0.04,6,0.14-0.18,0.11-0.13,0.07-0.09,0.10-0.12,0.07-0.09,0.05-0.06,第二步:确定进给量f,8,0.18-0.22,0.13-0.17,0.09-0.11,0.13-0.15,0.09-0.11,0.06-0.08,10,0.22-0.28,0.16-0.20,0.11-0.13,0.17-0.21,0.13-0.15,0.08-0.11,13,0.25-0.31,0.19-0.23,0.13-0.15

3、,0.19-0.23,0.14-0.18,0.10-0.12,16,0.31-0.37,0.22-0.27,0.15-0.19,0.22-0.28,0.17-0.21,0.12-0.14,20,0.35-0.43,0.26-0.32,0.18-0.22,0.26-0.32,0.20-0.24,0.13-0.17,25,0.39-0.47,0.29-0.35,0.20-0.24,0.29-0.35,0.22-0.26,0.14-0.18,30,0.45-0.55,0.33-0.41,0.22-0.28,0.32-0.4,0.24-0.30,0.16-0.20,30-60,0.60-0.70,0.

4、45-0.55,0.30-0.32,0.40-0.50,0.30-0.35,0.20-0.25,进给量f(mm),0.12,注：在大刚度零件上钻孔，精度在7级以下，钻后还要钻扩铰；在中等刚度上钻孔；钻孔后要用铰刀加工的精确孔,钻头切削速度的计算公式,V=Cv*d0Zv/(Tmi*fYv)*Kv,公式中的指数和系数,加工材料,加工类型(钻孔),Cv,Zv,Yv,mi,Xv,碳素结构钢,f0.2mm/r,7,0.4,0.7,0.2,0.2,及合金结构钢,f0.2mm/r,9.8,0.4,0.5,0.2,0.2,材质,碳钢,铸铁,铜、铝,合金钢,不锈钢,修正系数K,1,0.8,0.7,1.3,1.5

5、,投产批量,单件、小批生产,中批生产,大批、大量生产,修正系数K,1,0.8,0.7,第三步:,确定切削速度V,钻头扩孔钻和铰刀的寿命T,刀具直径d0(mm),刀具类型,加工材料,刀具材料,6,6-10,11-20,21-30,31-40,41-50,51-60,61-80,刀具寿命T(Min),结构钢及钢铸件,高速钢,15,25,45,50,70,90,110,钻头（钻及扩钻）,不锈钢及耐热钢,高速钢,6,8,15,25,铸铁、铜合金、钼合金,高速钢,20,35,60,75,110,140,170,硬质合金,20,35,60,75,110,140,170,扩孔钻,结构钢及铸钢铸钢铜、铝合金,

6、高速钢、硬质合金,30,40,50,60,80,100,结构钢、铸钢,高速钢,40,80,80,120,120,120,铰刀,硬质合金,20,30,50,70,90,110,140,铸铁、铜合金、铝合金,高速钢,60,120,120,180,180,180,硬质合金,45,75,105,135,165,210,钻头直径d0(mm),进给量f(mm/r),Cv切削速度系数,刀具的耐用度T(min),修正系数Kv,铰刀直径（mm）,铰孔余量(mm),钻头直径d0（mm),切削速度（米/分）,进给量（mm/r）,转速（转/分）,38,0.12,7,45,0.3,6-18mm,一次铰：0.1-0.2,

7、4,16,0.08,510,0.4,0.2,0.7,0.2,18.54 ,二次精铰:0.1-0.15,6,16,0.13,420,钻头切削速度的计算公式：,V=Cv*d0Zv/(Tmi*fYv)*Kv,18-30mm,一次铰：0.2-0.3,8,17,0.17,335,二次精铰:0.1-0.15,10,17,0.2,270,30-50mm,一次铰：0.3-0.4,13,17,0.23,220,计算钻头转速（r/min),二次精铰:0.15-0.25,16,18,0.27,190,钻头直径,转速,常量,切削速度,n=1000V/(*d), 螺纹底孔直径,20,18,0.32,165,第四步:,5

8、,640,3.14,10.05 ,n钻头转速（r/min),脆性材料,D底=D-1.05S距,25,18,0.35,125,计算钻床转速n,钻头直径,转速,常量,切削速度,V切削速度(m/min),韧性材料,D底=D-S距,30,18,0.41,80,(按钻床转速档次,8.96 ,640,3.14,18,d 钻头直径（mm),D底,底孔直径mm,30-60,0.55,及计算结果选定）,钻头直径,转速,常量,切削速度,选定转速,D,螺纹大径mm,注：此表仅做参考，数据为加工HB210-HB250材料时所用。,38,155.36 ,3.14,18.54 ,155 ,S距,螺距mm,加工直径,3-6

9、,6-10,10-20,20-30,30-40,40-50,50-60,60,参照表,进给量,0.06-0.1,0.1-0.3,0.12-0.4,0.15-0.6,0.2-0.8,0.25-1.0,0.3-1.0,0.3-1,切削速度,28-40,26-38,24-36,22-34,20-32,18-30,16-28,14-26,结果:(V选取),18.54 ,L1,公式,L2选用,L2(mm),L1+L2(mm),第五步,钻实料孔,11.40 ,L1=D/2Ctg,0.5-3mm（默认2）,2,13.40 ,计算切入超出量,扩、铰孔：,11.4,L1=(D-d)/2Ctg,1-3mm（默认2

10、）,2,13.4,L1+L2,攻丝：,2.5,1-3倍S距（默认2）,2,4.5,注:钻孔钻头角度一般为118,取59,Ctg59=0.6,攻丝螺距S：,1.25,退出丝锥转速n1:,155 , ,T基,钻孔：,通孔：,T基=(L+L1+L2)/f*n,通孔,1.31 ,第六步,不通孔：,T基=(L+L1)/f*n,不通孔,1.20 ,确定T基,扩、铰孔：,通孔：,T基=(L+L1+L2)/f*n,通孔,1.31 ,不通孔：,T基=(L+L1)/f*n,不通孔,1.20 ,攻丝：,通孔：,T基=(L+L1+L2)/f*n+(L+L1+L2)/f*n1,通孔(丝锥),1.66 ,不通孔：,T基=

11、(L+L1)/f*n+(L+L1)/f*n1,不通孔(丝锥),1.45 ,钻、扩、铰孔数量N:,2.00 ,T基总（N*T基）:,2.62 ,T基:,1.31 ,T基1,T基2,T基3,T基4,T基5,T基6,T基（总计）,2.62,2.62 ,数量n,2 ,T辅总,0.44 ,加工后孔径D（mm),孔的长度L（mm),材料系数K1,工作状况系数K2,修正系数K3,T工步(min),T辅(min),38,11,1,1,1,1.53 ,0.22 ,钻模钻孔,画线钻孔,扩孔,攻丝M8,1.48 ,立钻(T辅),1.07 ,2.33 ,0.94 ,-2.79 ,0.78 ,摇臂钻(T辅),1.53

12、,2.92 ,1.30 ,-3.34 ,2.02 ,钢料钻孔,铸铁钻孔,台钻(T辅),0.79 ,0.41 ,第六步,确定T辅,铰直孔,铰锥孔,正划平面,吊划平面,锪平面,倒角,通用部分(T辅),1.71 ,2.38 ,1.71 ,2.35 ,1.56 ,0.62 ,修正系数,钻孔K1,钢,合金钢,铝,铸铁,铸钢,铜,不锈钢,调质钢/球铁,胶木绝缘材料,1,1.2,0.5,0.7,1.2,0.6,1.8,1.1,0.5,攻丝K1,铸铁,铜铝,钢/球铁/调质钢,合金钢/铸钢,不锈钢,1,0.9,1.8,2,2.5,工作状况系数K2,通孔,钻不通孔,钻斜孔,震动性严重,攻不通孔,攻细牙螺纹,1,1

13、.1 ,1.3,1.3,1.2,0.9,T辅1,T辅2,T辅3,T辅4,T辅5,T辅(总计),0.44,0.44,T基(总计),T辅(总计),T工步(总计),2.62 ,0.44,3.06 ,质量G(Kg),变量系数,T装卸(Min)m20,20,0.85,1.52 ,1.95 ,零件装卸时间表,零件质量（Kg),零件安装方法,复杂程度,1,2,5,8,时间T装卸（min),三爪装卸,0.35,0.4,0.48,0.53,在平台上不紧固,0.28,0.29,0.34,0.38,在平台上螺丝紧固,0.5,0.57,0.68,0.75,组合夹具上校正装卸,A,0.4,0.46,0.55,0.6,B

14、,0.5,0.57,0.68,0.75,在弯板或工作台侧面装卸,A,0.56,0.64,0.77,0.84,B,0.68,0.78,0.93,1.02,在模具胎具上校正装卸,A,0.6,0.69,0.82,0.9,B,0.76,0.87,1.04,1.14,第五步,在平台工用螺丝压板紧固,A,0.45,0.52,0.62,0.68,确定零件装卸时间,B,0.6,0.69,0.82,0.9,T装卸,在台虎钳上装夹并紧固,A,0.35,0.4,0.48,0.53,B,0.5,0.57,0.68,0.75,零件质量（Kg),零件安装方法,复杂程度,10,12,15,20,时间T装卸（min),三爪装

15、卸,0.55,0.57,0.59,在平台上不紧固,0.39,0.41,0.42,1.15,在平台上螺丝紧固,0.78,0.81,0.85,2.06, ,组合夹具上校正装卸,A,0.63,0.65,0.68,1.47,B,0.78,0.81,0.85,2.06,在弯板或工作台侧面装卸,A,0.88,0.91,0.95,2.43,B,1.07,1.1,1.15,3.21,在模具胎具上校正装卸,A,0.94,0.97,1.02,2.18,B,1.19,1.23,1.29,2.75,在平台工用螺丝压板紧固,A,0.71,0.73,0.76,1.26,B,0.94,0.97,1.02,1.95,在台虎钳

16、上装夹并紧固,A,0.55,0.57,0.59,B,0.78,0.81,0.85,注：A简单，指工件形状规则，不需找正；,T装卸, B复杂，指工件形状复杂，用联动压板或5个以上压板装夹，或需2个以上千斤顶支撑，用划针、角尺、千分表等较正。,0.68 ,第六步,T工步,T装卸,T作业,计算作业时间,3.06 ,0.68 ,3.74 ,T作业,T工步工步时间,T装卸装卸零件时间,T作业作业时间,T工步=T基+T工辅,T作业=T工步+T装卸,T作业1,T作业2,T作业3,T作业总,3.74 ,3.74 ,第七步,T作业,K准结,K宽放,T单件,T小批量,计算单件时间,3.74 ,10.0%,8.5%,4.46 ,5.58 ,T单件,K宽放1522%(钻床),T单件单件时间,T单件=T作业时间*(1+K宽放)*(1+K准结),K宽放宽放占作业百分比,T单件,N投数,T准结,T批量(min),T批量(h),名称,公式,4.46 ,10,40,84.64 ,1.41 ,T基基本时间,T工辅工步辅助时间,T批量批零件定额,N投数投产数量,T批量=T单件*N投数+T准结,T单件(min),T工步工步时间,T工步=T基+T工辅,T准结准备与结束时间,8.46369,T装卸装卸零件时间,T作业作