Grinder
AssigneeSamsung Electronics Co., Ltd.
InventorsJwahyeon KIM, Kyungyeol KIM, Taesung KIM, Hyuntae KIM, Byunghyuck AHN
Life of this patent
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Abstract
A grinder may include a spindle, a grinding wheel and a mount disk. The spindle may be configured to generate a rotary force. The grinding wheel may be configured to receive the rotary force from the spindle and grind an object. The mount disk may be between the spindle and the grinding wheel and may be configured automatically engage or disengage the grinding wheel based on a rotation direction of the mount disk. Thus, an exchange or replacement of the grinding wheel may be performed in a short time by rotating the spindle so that the grinding wheel is disengaged from the mount disk.
Claims20
A grinder comprising:
- a spindle configured to generate a rotary force;
- a grinding wheel configured to receive the rotary force from the spindle and grind an object based on the rotary force;
- and
- a mount disk arranged between the spindle and the grinding wheel, the mount disk configured to automatically engage or disengage the grinding wheel based on a rotation direction of the mount disk.
A grinder comprising:
- a spindle configured to generate a rotary force;
- a grinding wheel configured to receive the rotary force from the spindle and grind a surface of a semiconductor wafer based on the rotary force;
- an inner disk connected to the spindle;
- an outer disk connected to the inner disk;
- and
- a plurality of combination shafts configured to engage or disengage the grinding wheel based on a rotation direction of the outer disk.
A grinder comprising:
- an actuator configured to generate a rotary force.
- a spindle configured to rotate based on the rotary force;
- a grinding wheel configured to receive the rotary force from the spindle and grind a surface of a semiconductor wafer based on the rotary force;
- an inner disk connected to the spindle;
- an outer disk connected to the inner disk;
- and
- a plurality of combination shafts configured to engage or disengage the grinding wheel based on rotation directions of the outer disk;
- the outer disk including,
- an inner race connected to the inner disk, the inner race including an inner gear surface, and
- an outer race spaced apart from the inner race, the outer race and the inner race defining a receiving space, the outer race including an outer gear surface;
- and
- each combination shaft of the plurality of combination shafts including,
- a geared portion configured to engage with the inner gear surface and the outer gear surface;
- and
- a screwed portion extended from the geared portion and configured to engage or disengage the grinding wheel based on a rotation direction of the geared portion.
Dependencies are inferred from the claim text.