US 12,214,470 B2
Grinding wheel assembly with a coolant passage system
Pen Hung Chen, Taichung (TW)
Assigned to SHIN-YAIN INDUSTRIAL CO., LTD., Taichung (TW)
Filed by SHIN-YAIN INDUSTRIAL CO., LTD., Taichung (TW)
Filed on Apr. 6, 2022, as Appl. No. 17/714,282.
Prior Publication US 2023/0321791 A1, Oct. 12, 2023
Int. Cl. B24B 55/12 (2006.01); B24B 55/04 (2006.01)
CPC B24B 55/12 (2013.01) [B24B 55/045 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A grinding wheel assembly with a coolant passage system, the grinding wheel assembly comprising:
a tool holder having
a first coolant passage defined through the tool holder along a longitudinal direction of the tool holder;
a mounting shaft connected to the tool holder and having
a first end connected to the tool holder;
a second end opposite the first end of the mounting shaft in an axial direction of the mounting shaft;
a mounting portion located between the first end and the second end and having an external peripheral surface; and
a second coolant passage defined inside the mounting shaft, extending from the first end of the mounting shaft to the external peripheral surface of the mounting portion, and communicating with the first coolant passage of the tool holder; and
a grinding wheel having
a mounting hole defined through the grinding wheel along a longitudinal direction of the grinding wheel and located on and around the mounting portion of the mounting shaft;
a grinding surface surrounding the mounting hole; and
at least one third coolant passage defined through the grinding wheel, extending from the mounting hole to the grinding surface, and communicating with the second coolant passage of the mounting shaft, wherein
the grinding wheel has
two side surfaces respectively facing two opposite directions, and
multiple through holes defined through the grinding wheel, extending from one of the two side surfaces of the grinding wheel to the other one of the two side surfaces of the grinding wheel, arranged around the mounting hole of the grinding wheel, and spaced from said third coolant passage;
the tool holder has
a first flange located at an end of the tool holder and having an outer peripheral surface and an abutting surface facing the mounting shaft,
an inserting groove formed in the first flange, formed through the abutting surface of the first flange, and surrounded by the outer peripheral surface of the first flange, and
multiple adjusting holes radially defined through the first flange and extending from the inserting groove to the outer peripheral surface of the first flange;
the mounting shaft has an inserting portion disposed at the first end of the mounting shaft and inserted into the inserting groove of the tool holder; and
the grinding wheel assembly has multiple adjusting set screws respectively screwed into the multiple adjusting holes and abut against the inserting portion of the mounting shaft.