US Patent No. 10,335,911

TOOL HOLDER ASSEMBLY MOUNTABLE ON A MACHINE SPINDLE HAVING A SPINDLE COOLANT CHANNEL


Patent No. 10,335,911
Issue Date July 02, 2019
Title Tool Holder Assembly Mountable On A Machine Spindle Having A Spindle Coolant Channel
Inventorship Hsing-Chieh Huang, Taichung (TW)
Chi-Cheng Kuo, Taichung (TW)
Ching-Kuo Wu, Taichung (TW)
Assignee Precision Machinery Research and Development Center, Taichung (TW)

Claim of US Patent No. 10,335,911

1. A tool holder assembly comprising:a holder body extending along an axial line, and having a first end, a second end opposite to said first end along the axial line, and a holder coolant channel extending through said first end and said second end along the axial line;
a pull stud extending along the axial line into said holder body through said first end, and having an insertion portion, a grip portion, and a longitudinal passage, said insertion portion being disposed adjacent to said first end, said grip portion being opposite to said insertion portion along the axial line, said longitudinal passage extending through said insertion portion and said grip portion along the axial line, and fluidly communicating with said holder coolant channel; and
a flow adjustment unit including a connection tube extending into said longitudinal passage, a resilient member urging said connection tube to project outwardly from said grip portion, and a flow guide channel extending through said connection tube and fluidly communicating with said holder coolant channel.