表 1.4 硬质合金及高速钢车刀粗车外圆和端面时的进给量
工件材料 |
车刀刀杆尺寸 B×H
/mm |
工 件
直 径
/mm |
背吃刀量 /mm |
≤ 3 |
>3~5 |
>5~8 |
>8~12 |
>12 |
进给量 /(m/r) |
碳素结构钢合金结构钢 |
16×25 |
20 |
0.3~0.4 |
|
|
|
|
40 |
0.4~0.5 |
0.3~0.4 |
|
|
|
60 |
0.5~0.7 |
0.4~0.6 |
0.3~0.5 |
|
|
100 |
0.6~0.9 |
0.5~0.7 |
0.5~0.6 |
0.4~0.5 |
|
400 |
0.8~1.2 |
0.7~1.0 |
0.6~0.8 |
0.5~0.6 |
|
20×30
25×25 |
20 |
0.3~0.4 |
|
|
|
|
40 |
0.4~0.5 |
0.3~0.4 |
|
|
|
60 |
0.6~0.7 |
0.5~0.7 |
0.4~0.6 |
|
|
100 |
0.8~1.0 |
0.7~0.9 |
0.5~0.7 |
0.4~0.7 |
|
600 |
1.2~1.4 |
1.0~1.2 |
0.8~1.0 |
0.6~0.9 |
0.4~0.6 |
25×40 |
60 |
0.6~0.9 |
0.5~0.8 |
0.4~0.7 |
|
|
100 |
0.8~1.2 |
0.7~1.1 |
0.6~0.9 |
0.5~0.8 |
|
1000 |
1.2~1.5 |
1.1~1.5 |
0.9~1.2 |
0.8~1.0 |
0.7~0.8 |
铸铁及铜合金 |
16×25 |
40 |
0.4~0.5 |
|
|
|
|
60 |
0.6~0.8 |
0.5~0.8 |
0.4~0.6 |
|
|
100 |
0.8~1.2 |
0.7~1.0 |
0.6~0.8 |
0.5~0.7 |
|
400 |
1.0~1.4 |
1.0~1.2 |
0.8~1.0 |
0.6~0.8 |
|
25×30
25×25 |
40 |
0.4~0.5 |
|
|
|
|
60 |
0.6~0.9 |
0.5~0.8 |
0.4~0.7 |
|
|
100 |
0.9~1.3 |
0.8~1.2 |
0.7~1.0 |
0.5~0.8 |
|
600 |
1.2~1.8 |
1.2~1.6 |
1.0~1.3 |
0.9~1.1 |
0.7~0.9 |
注:1.加工断续表面及有冲击的加工时,表内的进给量应乘系数K=0.75~0.85。
2.加工耐热钢及其合金时,不采用大于1.0 mm/r 的进给量。
3.加工淬硬钢时,表内进给量应乘系数K=0.8(当材料硬度为44~56HRC)或K=0.5(当硬度为57~62HRC时)。
|