Patent ID: 6155742
Filing Date: 2000-12-05
Classification: B23B,B23D,F16B,Y10T

Abstract:
A coupling mechanism for interconnecting a rotatable connecting end of a support on a broaching machine and a bit holder which includes a rotary hollow shaft having therein a mandrel that is rotatable with the rotary hollow shaft and that is slideable axially in the rotary hollow shaft, said coupling mechanism comprising:a first coupling member including a first disk part and a first neck part with a cross-section smaller than that of said first disk part, said first neck part being adapted to be connected to the connecting end of the support, said first disk part having a plurality of posts projecting axially from said first disk part opposite to said first neck part;a second coupling member including a second disk part and a second neck part with a cross-section smaller than that of said second disk part, said second neck part is stepped to form first and second sections, said first section being disposed between said second disk part and said second section and having a cross-section smaller than that of said second section, said second neck part being adapted to extend into said hollow shaft and being adapted to be connected to said mandrel, said second disk part having slide holes which extend axially in said second disk part at locations radially outward of said second neck part so as to receive said posts, said second coupling member being guided by said posts and said slide holes for sliding axially relative to said first coupling member;a plurality of fastening holes extending through said first disk part and said posts; anda plurality of fasteners disposed in said fastening holes and adapted to extend into the hollow shaft.