Control method for a hand-held power tool
US-2017348844-A1 · Dec 7, 2017 · US
Machine tool with rotary table
US2016008939A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016008939-A1 |
| Application number | US-201514796651-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 10, 2015 |
| Priority date | Jul 11, 2014 |
| Publication date | Jan 14, 2016 |
| Grant date | — |
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Abstract
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A machine tool with a rotary table includes a disturbance torque calculation unit configured to calculate a disturbance torque imposed on the brake while the rotary table is retained by the brake, a first coefficient storing unit for storing a first coefficient corresponding to a disturbance torque, an accumulation unit configured to, when the disturbance torque is imposed on the brake, find a first coefficient corresponding to the disturbance torque and accumulate a value of the first coefficient, and, an annunciation unit configured to annunciate necessity of a brake replacement when the value of the first coefficient accumulated reaches a predetermined value.
First claim
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1 . A machine tool with a rotary table configured to index a rotary table with a workpiece mounted thereupon and retain an indexed position by a brake, the machine tool with the rotary table comprising: a disturbance torque calculation unit configured to calculate a disturbance torque imposed on the brake while the rotary table is retained by the brake; a first coefficient storing unit configured to store a first coefficient corresponding to the disturbance torque; an accumulation unit configured to, when the disturbance torque is imposed on the brake, calculate a disturbance torque using the disturbance torque calculation unit, find a first coefficient corresponding to the disturbance torque based on the disturbance torque calculated and referring to the first coefficient storing unit, and accumulate a value of the first coefficient; and, an annunciation unit configured to annunciate necessity of a brake replacement when the value of the first coefficient accumulated reaches a predetermined value. 2 . A machine tool with a rotary table configured to index a rotary table with a workpiece mounted thereupon and retain an indexed position by a brake, the machine tool with the rotary table comprising: an inertia storing unit configured to preliminary store an inertia of the rotary table corresponding to the workpiece; a second coefficient storing unit configured to store a second coefficient corresponding to size of the inertia; an accumulation unit configured to, when the disturbance torque is imposed on the brake, find a second coefficient corresponding to the inertia based on the inertia stored and referring to the second coefficient storing unit, and accumulate a value of the second coefficient; and, an annunciation unit configured to annunciate necessity of a brake replacement when an accumulated value of the coefficient reaches a predetermined value. 3 . A machine tool with a rotary table configured to index a rotary table with a workpiece mounted thereupon and retain an indexed position by a brake, the machine tool with the rotary table comprising: a disturbance torque calculation unit configured to calculate a disturbance torque imposed on the brake while the rotary table is retained by the brake; an inertia storing unit configured to preliminary store an inertia of the rotary table corresponding to the workpiece; a first coefficient storing unit configured to store a first coefficient corresponding to the disturbance torque; a second coefficient storing unit configured to store a second coefficient corresponding to size of the inertia; an accumulation unit configured to, when the disturbance torque is imposed on the brake, calculate a disturbance torque using the disturbance torque calculation unit, find a first coefficient corresponding to the disturbance torque based on the disturbance torque calculated and referring to the first coefficient storing unit, find a second coefficient corresponding to the inertia based on the inertia stored and referring to the second coefficient storing unit, and accumulate a value of the first coefficient and a value of the second coefficient; and, an annunciation unit configured to annunciate necessity of a brake replacement when the value of the first coefficient accumulated reaches a predetermined value.
Assignees
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Classifications
Rotary tables · CPC title
- B23Q11/0092Primary
actuating braking or stopping means · CPC title
indicating that a lining is worn to minimum allowable thickness · CPC title
Adjusting or stopping working-spindles in a predetermined position · CPC title
Force, torque, stress or strain · CPC title
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- What does patent US2016008939A1 cover?
- A machine tool with a rotary table includes a disturbance torque calculation unit configured to calculate a disturbance torque imposed on the brake while the rotary table is retained by the brake, a first coefficient storing unit for storing a first coefficient corresponding to a disturbance torque, an accumulation unit configured to, when the disturbance torque is imposed on the brake, find a …
- Who is the assignee on this patent?
- Fanuc Corp
- What technology area does this patent fall under?
- Primary CPC classification B23Q11/0092. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Jan 14 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).