Input interpretation
![lathe optimal turning speed](../image_source/a5c9f5f81b80cfa4027d166ca1b3689a.png)
lathe optimal turning speed
Input values
![work material alloy group | steel 10000 series alloy work material | UNS G10060 tool material | high speed steel turning feed rate | 0.004 in/rev (inches per revolution) depth of cut per pass | 0.01 inches lead angle | 15 degrees tool life | 180 minutes initial work material diameter | 3 inches final work material diameter | 2.7 inches length of cut | 12 inches](../image_source/42e8a69e806b6204da3d602d0d0664e3.png)
work material alloy group | steel 10000 series alloy work material | UNS G10060 tool material | high speed steel turning feed rate | 0.004 in/rev (inches per revolution) depth of cut per pass | 0.01 inches lead angle | 15 degrees tool life | 180 minutes initial work material diameter | 3 inches final work material diameter | 2.7 inches length of cut | 12 inches
Schematic of work material and cutting tool
![Schematic of work material and cutting tool](../image_source/eb9ce757b9099f8a58ece4554faa2b27.png)
Schematic of work material and cutting tool
Result
![workpiece rotational speed | 2.712 rpm (revolutions per minute) turning time per unit length | 36.2925/ min/cm (minutes per centimeter) turning time for first pass | 1106.19/ minutes total number of passes | 16 minimum job time | 15818.6/ minutes (assuming lead angle of 0° and nose radius of 3/64](../image_source/381b24cc727701d746ceb0169c9eec37.png)
workpiece rotational speed | 2.712 rpm (revolutions per minute) turning time per unit length | 36.2925/ min/cm (minutes per centimeter) turning time for first pass | 1106.19/ minutes total number of passes | 16 minimum job time | 15818.6/ minutes (assuming lead angle of 0° and nose radius of 3/64") (assuming perfectly rigid lathe; actual speed may be lower)