B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
29/35
B23P 15/28 (2006.01) B23B 29/04 (2006.01)
Patent
CA 1205621
QUICK-CHANGE TOOL ABSTRACT OF THE DISCLOSURE A quick-change tool comprises a shank assembly and a cutting head cartridge detachably mounted on the shank assembly. The cartridge supports thereon a cutting insert and is provided with a receptacle engaging portion on the rear end portion thereof. The shank assembly comprises a shank body having an axial bore and a draw bar slidably held in the axial bore. The draw bar is provided with a plug engaging portion on its front end. The engaginq portions are provided with flat engaging surfaces. The cartridge is fixed to the shank assembly by rearwardly drawing the draw bar with the engaging portions being engaged with each other. The shank body is provided with a step-like extension extending forwardly from the lower part of its front end surface below the axial bore. A key member adapted to be snugly received between a pair of laterally opposed walls on the cartridge body is fixed to the step-like extension. The receptacle engaging portion is formed of laterally opposed side walls and a cross bar portion connecting the upper ends of the side walls. A laterally elongated upper abutment surfaces are formed on the rear end surface of the cross bar portion and on the front end surface of the shank body. Laterally elongated lower abutment surfaces are formed on the front end surface of the step-like extension and the rear end portion of the cartridge body. When the cartridge is fixed to the shank body the upper abutment surfaces abut against each other, the lower abutment surfaces abut against each other and the receptacle engaging portion rests on the step-like extension with the key member received between the walls.
439216
Kanno Shigeyuki
Matsubara Hajime
Bereskin & Parr
Toshiba Tungaloy Co. Ltd.
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