Cutting apparatus
AssigneeDisco Corporation
InventorsKuniharu Izumi, Zhibo Su
Life of this patent
Estimating the term…
Abstract
A cutting apparatus includes a cutting unit that has a spindle with an annular cutting blade mounted to a tip part of the spindle through a blade mount, and a determining unit. The determining unit has a second flow path that is connected to a first flow path in a mounter of the blade mount for causing a negative or positive pressure to act on the first flow path, a measuring device that obtains a measured value of at least one of a pressure and a flow rate in the second flow path, and a screw-engaged state determining section that determines that a screw-engaged state of a fixed nut with a boss section of the mounter where the cutting blade is disposed is defective in a case where the measured value when the negative or positive pressure acts on the first flow path indicates an abnormal value.
Claims2
A cutting apparatus comprising:
- a cutting unit that has a spindle with an annular cutting blade mounted to a tip part of the spindle via a blade mount;
- and
- a determining unit that determines a state of the cutting blade on the blade mount, wherein
- the blade mount includes
- a mounter fixed to the tip part of the spindle, and
- a fixed nut that presses the cutting blade against the mounter to clamp the cutting blade together with the mounter,
- the mounter has
- a boss section that is inserted into a central hole of the cutting blade and has a male screw for screw engagement with the fixed nut,
- an annular flange section that is located on a base portion of the boss section, protrudes outside relative to the boss section in a radial direction of the boss section, and is able to make contact with the cutting blade in a state in which the boss section is inserted into the cutting blade, and
- a first flow path that is formed in the mounter and is connected to an opening, which opening is located outside the boss section and inside the flange section, and
- the determining unit has
- a second flow path that is connected to the first flow path, for causing a negative pressure or a positive pressure to act on the first flow path,
- a measuring device that obtains a measured value of at least one of:
- a pressure in the second flow path, and a flow rate of a fluid flowing through the second flow path,
- a screw-engaged state determining section that determines that a screw-engaged state of the fixed nut with the boss section is defective in a case where the measured value when the negative pressure or the positive pressure acts on the first flow path in a state in which the fixed nut is at least partly screw-engaged with the boss section of the mounter where the cutting blade is disposed indicates an abnormal value, and
- an informing section that informs a determination result of the screw-engaged state determining section.
Dependencies are inferred from the claim text.