Back to results
US 2020/0159190 A1Published application
Numerical controller
AssigneeFanuc Corporation
InventorsYuu Oota, Masaru Kuroiwa
Life of this patent
Estimating the term…
Abstract
A numerical controller decelerates a spindle feed rate in a bite portion to a bite velocity lower than a commanded feed rate when drilling is carried out and then, after passage through a velocity recovery point where a measured spindle load is made substantially constant, accelerates the spindle feed rate from the bite velocity to the commanded feed rate.
Claims7
A numerical controller comprising:
- an acceleration/deceleration start position calculation unit that decelerates a spindle feed rate in a bite portion to a bite velocity lower than a commanded feed rate when drilling is carried out;
- and
- a spindle load measurement unit that measures a spindle load, wherein
- the acceleration/deceleration start position calculation unit is configured to accelerate the spindle feed rate from the bite velocity to the commanded feed rate, after passage through a velocity recovery point where the spindle load is made substantially constant.
1 more element
A numerical controller comprising:
- an acceleration/deceleration start position calculation unit that decelerates a spindle feed rate in a bite portion to a bite velocity lower than a commanded feed rate when drilling of a through-hole is carried out, wherein
- the acceleration/deceleration start position calculation unit is configured to accelerate, after passage through a specified velocity recovery point behind the bite portion, the spindle feed rate from the bite velocity to the commanded feed rate, and thereafter decelerate the spindle feed rate in a penetration portion to a penetration velocity lower than the commanded feed rate.
Dependencies are inferred from the claim text.