摘要:
A mount flange for mounting a cutting blade on a spindle is provided. The cutting blade has a central engaging hole and a peripheral cutting edge. The mount flange includes a cylindrical boss portion having a front portion adapted to be inserted into the engaging hole of the cutting blade and a rear portion whose inner circumferential surface is adapted to be engaged with the spindle, and a flange portion projecting radially outward from the rear portion of the boss portion and having a front surface functioning as a mounting surface adapted to come into abutment against one side surface of the cutting blade. An annular space is formed in the mount flange so as to surround the spindle and open to the inner circumferential surface of the boss portion, thereby suppressing rearward warpage of the outer circumference of the flange portion due to the rotation of the spindle.
摘要:
In accordance with the following step of a method of manufacturing a MOSFET, a first cutting step of cutting a silicon carbide wafer along a plane substantially parallel to a {11-20} plane is performed. After the first cutting step, a second cutting step of cutting the silicon carbide wafer along a plane substantially perpendicular to the {11-20} plane and substantially perpendicular to the first main surface is performed.
摘要:
A wafer edge trim blade includes a round blade body and at least one slot formed inward from an outside edge of the round blade body. The at least one slot is configured to remove debris generated during wafer edge trimming using the wafer edge trim blade.
摘要:
A cutting unit includes a spindle, a spindle housing, a support flange on the front of the spindle, a cutting blade detachably supported to the support flange, and a fixing flange for fixing the cutting blade to the support flange. The support flange includes a boss portion adapted to be inserted through a central opening of the cutting blade, a flange portion for supporting one side surface of the cutting blade, and a cylindrical portion for engaging the front of the spindle. The flange portion has a suction hole opening toward the fixing flange, and the cylindrical portion has a communication hole communicating with the suction hole. The communication hole is connected to a vacuum source through a rotary joint fixed to the spindle housing so that communication between the communication hole and the vacuum source is selectively made by an on-off valve.
摘要:
A workpiece cutting method of cutting a workpiece having a front side on which a plurality of crossing division lines are formed to define a plurality of separate regions where a plurality of devices are each formed is disclosed. The workpiece cutting method includes a workpiece cutting step of cutting the workpiece held on a first chuck table along the division lines by using a cutting blade, a dummy wafer cutting step of cutting a dummy wafer held on a second chuck table by using the cutting blade, a dummy wafer imaging step of imaging a cut groove formed on the dummy wafer in the dummy wafer cutting step, by using an imaging unit to thereby obtain a detected image, and a determining step of determining the condition of the cutting blade from the condition of chippings formed on both sides of the cut groove in the detected image.
摘要:
Disclosed herein is a cutting apparatus including a chuck table for holding a workpiece, a cutting unit for cutting the workpiece held on the chuck table, and a feeding mechanism for relatively moving the chuck table and the cutting unit. The cutting unit includes a spindle adapted to be rotationally driven, a rotatable cutting blade mounted on the spindle and having a peripheral cutting edge, a cutting water nozzle for supplying a cutting water to the cutting blade, a photocatalyst member provided so as to come into contact with the cutting water supplied from the cutting water nozzle, and a light applying unit for exciting the photocatalyst member to thereby give an oxidizing power due to hydroxy radicals to the cutting water.
摘要:
A mount flange for mounting a cutting blade on a spindle is provided. The cutting blade has a central engaging hole and a peripheral cutting edge. The mount flange includes a cylindrical boss portion having a front portion adapted to be inserted into the engaging hole of the cutting blade and a rear portion whose inner circumferential surface is adapted to be engaged with the spindle, and a flange portion projecting radially outward from the rear portion of the boss portion and having a front surface functioning as a mounting surface adapted to come into abutment against one side surface of the cutting blade. An annular space is formed in the mount flange so as to surround the spindle and open to the inner circumferential surface of the boss portion, thereby suppressing rearward warpage of the outer circumference of the flange portion due to the rotation of the spindle.
摘要:
A package substrate processing method of dividing a package substrate into a plurality of individual package devices along a plurality of division lines, the package substrate being composed of an electrode plate and a synthetic resin layer formed on the back side of the electrode plate for molding the package devices. The package substrate processing method includes an internal stress relieving step of cutting the electrode plate of the package substrate along a selected one of the division lines to form a relief groove, thereby relieving an internal stress in the package substrate, a resin layer planarizing step of grinding the synthetic resin layer of the package substrate to thereby planarize the synthetic resin layer, and a package substrate dividing step of dividing the package substrate held on a holding table under suction along the division lines.
摘要:
A cutting unit includes a spindle, a spindle housing, a support flange on the front of the spindle, a cutting blade detachably supported to the support flange, and a fixing flange for fixing the cutting blade to the support flange. The support flange includes a boss portion adapted to be inserted through a central opening of the cutting blade, a flange portion for supporting one side surface of the cutting blade, and a cylindrical portion for engaging the front of the spindle. The flange portion has a suction hole opening toward the fixing flange, and the cylindrical portion has a communication hole communicating with the suction hole. The communication hole is connected to a vacuum source through a rotary joint fixed to the spindle housing so that communication between the communication hole and the vacuum source is selectively made by an on-off valve.
摘要:
In a wafer processing method, an ingot is sliced into a wafer and the wafer is planarized by polishing a surface of the wafer. When the wafer is planarized, the wafer is disposed on a wafer holder and the wafer is rotated, a heat quantity is applied to a portion of the wafer so as to form a reformed layer at the portion of the wafer, and a polishing tool is brought into contact with the portion of wafer while rotating so as to polish the portion of the wafer.