JPH0197806U

JPH0197806U -

Info

Publication number: JPH0197806U
Application number: JP19089087U
Authority: JP
Priority date: 1987-12-16
Filing date: 1987-12-16
Publication date: 1989-06-29

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例である工具保持装置
を示す正面断面図である。第２図は従来の工具保
持装置を示す一部正面断面図である。１２：装置本体、１４：嵌合部、１８：嵌合穴
、２０：係合凹部、２２：円錐面、２４：めねじ
穴、２６：ねじ部材、２８：係合凹部、３０：円
錐面、３２：といし保持軸、４２：といし、４４
：といし保持部、４６：嵌合部、４８：貫通穴、
５０：係合部材、５４，５６：係合凸部。 FIG. 1 is a front sectional view showing a tool holding device which is an embodiment of the present invention. FIG. 2 is a partially front sectional view showing a conventional tool holding device. 12: Device body, 14: Fitting portion, 18: Fitting hole, 20: Engagement recess, 22: Conical surface, 24: Female threaded hole, 26: Threaded member, 28: Engagement recess, 30: Conical surface, 32: Grinding wheel holding shaft, 42: Grinding wheel, 44
: Grinding wheel holding part, 46: Fitting part, 48: Through hole,
50: Engagement member, 54, 56: Engagement convex portion.

Claims

[Claims for Utility Model Registration] A tool holding device that is attached to a rotating shaft of a machine tool and holds a tool, the tool holding device being attached to the rotating shaft at a first end,
The second end is provided with an axial fitting hole that opens in the end face of the second end, and the inner wall of the fitting hole is provided with a conical surface whose center line is the diameter of the fitting hole. a device main body having a recess formed therein, and a female threaded hole concentric with the engagement recess and having a diameter larger than the maximum diameter of the conical surface formed on the side facing the engagement recess; , a screw member having an engaging part concentric with the conical surface on a surface facing the engaging recess, a tool holding part at one end, and a screw member having the other end fitted into the fitting hole by a certain depth; The center line of the engaging recess and the female threaded hole is provided with a fitting portion that can be fitted into the fitting hole, and the fitting portion is perpendicular to the fitting hole, and the center line of the fitting recess and the female threaded hole is provided with a fitting portion that is perpendicular to the fitting hole. A tool holding shaft is formed with a through hole that is eccentric by a certain amount on the opening side of the fitting hole, and the tool holding shaft is inserted into the through hole and engages the conical surface of the engaging recess and the screw member at the engaging portions at both ends. an engaging member that engages with the fitting portion and draws the fitting portion into the fitting hole as the screw member is tightened; 1. A tool holding device capable of rapid exchange, characterized in that one of the engaging portions is an engaging convex portion and the other is an engaging concave portion, and the engaging concave portion engages with the engaging convex portion on a conical surface.