JPS63169204U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図および第２図は本考案の一実施例を示す
図であつて、第１図はその軸断面図、第２図はそ
の軸線方向先端視図、第３図ないし第５図は従来
の端面駆動装置を示す図であつて、第３図はその
軸断面図、第４図はその軸線方向先端視図、第５
図は第３図および第４図に示す端面駆動装置の使
用状態を示す正面図である。 １２……後部本体、１９……嵌合凹部、３０…
…前部本体、３４……嵌合凸部、４７……センタ
嵌合凹部、４９…センタ、８１……端面駆動装置
、８２……内周面、８３……外周面、８４……内
周面、８５……外周面。 1 and 2 are diagrams showing one embodiment of the present invention, in which FIG. 1 is an axial sectional view thereof, FIG. 2 is a top view in the axial direction, and FIGS. 3 to 5 are views of a conventional FIG. 3 is an axial sectional view thereof, FIG. 4 is an axial tip end view thereof, and FIG.
This figure is a front view showing the state in which the end face drive device shown in FIGS. 3 and 4 is used. 12... Rear body, 19... Fitting recess, 30...
...Front body, 34... Fitting convex portion, 47... Center fitting recess, 49... Center, 81... End face drive device, 82... Inner circumferential surface, 83... Outer circumferential surface, 84... Inner circumference Surface, 85...Outer peripheral surface.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 工作機械のスピンドル前端部に装着された後部
本体と、この後部本体の前端側に設けられた前部
本体と、この前部本体の前端側に設けられ被削材
を支持するセンタとを有してなり、前記後部本体
と前記前部本体とは、前記後部本体の前面中央部
に設けられた嵌合凹部の内周面と前記前部本体の
後面中央部に設けられた嵌合凸部の外周面とが嵌
合して配設され、前記前部本体と前記センタとは
、前記前部本体の前面中央部に設けられたセンタ
嵌合凹部の内周面とセンタの外周面とが嵌合して
配設され、前記嵌合凸部の外周面と前記センタ嵌
合凹部の内周面とが同軸に配設されている端面駆
動装置において、前記嵌合凹部の内周面と前記嵌
合凸部の外周面とを先端側から後端側へ向かうに
したがい縮径するテーパー状に形成するとともに
、前記センタ嵌合凹部の内周面と前記センタの外
周面とを先端側から後端側へ向かうにしたがい縮
径するテーパー状に形成したことを特徴とする端
面駆動装置。 The machine tool has a rear body attached to the front end of a spindle of a machine tool, a front body provided at the front end of the rear body, and a center provided at the front end of the front body to support a workpiece. The rear main body and the front main body are defined by an inner peripheral surface of a fitting recess provided at the center of the front surface of the rear main body and a fitting convex portion provided at the center of the rear surface of the front main body. The front body and the center are arranged such that the inner circumferential surface of a center fitting recess provided in the front central part of the front body fits with the outer circumferential surface of the center. In an end face drive device in which the outer circumferential surface of the fitting protrusion and the inner circumferential surface of the center fitting recess are coaxially arranged, the inner circumferential surface of the fitting recess and the fitting recess are arranged coaxially. The outer circumferential surface of the mating convex portion is formed into a tapered shape whose diameter decreases from the distal end side to the rear end side, and the inner circumferential surface of the center fitting recess and the outer circumferential surface of the center are formed in a tapered shape from the distal end side to the rear end side. An end face drive device characterized by being formed in a tapered shape that decreases in diameter toward the side.