硬质合金车刀粗车外圆及端面的进给量
工 材 | 刀 尺 | 工 直 | 背 | ||||
≤3 | >3~5 | >5~8 | >8~12 | >12 | |||
进 | |||||||
碳素结构钢、合金结构钢及耐热钢 | 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 | 0.5~0.7 | 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 | | ||
400 | 1.2~1.4 | 1.0~1.2 | 0.8~1.0 | 0.6~0.9 | 0.4~0.6 | ||
铸铁及铜合金 | 16×25 | 40 | 0.4~0.5 | | | | |
60 | 0.5~0.8 | 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 | | ||
20×30 25×25 | 40 | 0.4~0.5 | | | | | |
60 | 0.5~0.9 | 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 | | ||
400 | 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工件时,表内进给量应乘系数K=0.75~0.85;
2、在无外皮加工时,表内进给量应乘第数K=1.1;
3、加工耐热钢及其合金时,进给量不大于1mm/r;
4、加工淬硬钢时,进给量应减小。当钢的硬度为44~56HRC时,乘系数K=0.8;当钢的硬度为57~62HRC时,乘系数K=0.5。
5、可转位刀片的允许最大进给量不应超过其刀尖圆弧半径数值的80%。
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