JPS63131323U

JPS63131323U -

Info

Publication number: JPS63131323U
Application number: JP2573187U
Authority: JP
Priority date: 1987-02-20
Filing date: 1987-02-20
Publication date: 1988-08-26

Description

[Brief explanation of the drawing]

第１図は本考案による一実施例を示す縦断側面
図、第２図は第１図の正・逆転側最終段歯車の斜
視図、第３図は第１図の−線断面図である。
第４図は従来技術の例を示す縦断側面図で、第５
図は第４図の正・逆転側最終段歯車の斜視図、第
６図は第４図の−線断面図である。第７図は
本考案の変形例を示す正・逆転側最終段歯車の正
面図、第８図は第７図の−線断面図である。図において、１は伝達軸、２は最終軸、３は正
転側最終段歯車、４は逆転側最終段歯車、５はト
メワ、６はスリーブ、７はクラツチ爪、８はニー
ドルローラ、９はフローテイングスピンドル、１
０はスプリング、１１はクラツチ爪内径部、１２
は逃げ部、１３はピニオン、１４はニードルであ
る。 1 is a longitudinal sectional side view showing one embodiment of the present invention, FIG. 2 is a perspective view of the final stage gear on the forward and reverse sides of FIG. 1, and FIG. 3 is a sectional view taken along the line -- in FIG. 1.
FIG. 4 is a longitudinal sectional side view showing an example of the prior art;
The figure is a perspective view of the final stage gear on the forward and reverse side in FIG. 4, and FIG. 6 is a sectional view taken along the line -- in FIG. 4. FIG. 7 is a front view of the final stage gear on the forward and reverse sides showing a modification of the present invention, and FIG. 8 is a sectional view taken along the line -- in FIG. 7. In the figure, 1 is the transmission shaft, 2 is the final shaft, 3 is the final stage gear on the normal rotation side, 4 is the final stage gear on the reverse rotation side, 5 is the stopper, 6 is the sleeve, 7 is the clutch pawl, 8 is the needle roller, and 9 is the floating spindle, 1
0 is a spring, 11 is a clutch pawl inner diameter part, 12
13 is a pinion, and 14 is a needle.

Claims

[Scope of utility model registration request]

The floating spindle that rotates the tip tool rotates in the opposite direction when rotating under no load, rotates in the forward direction during drilling or tapping work where thrust is applied to the tool body, and then rotates in the reverse direction when pulling out the tool body after the work is completed. The floating spindle, which is disposed inside the final shaft via a needle roller installed perpendicular to the shaft, is slidable in the axial direction and is connected to the final shaft. In the forward/reverse switching mechanism, the forward/reverse rotation switching mechanism comprises a forward rotation side final stage gear and a reverse rotation side final stage gear which are configured to rotate integrally with the final shaft and are arranged to be able to idle on the final shaft. By forming a convex clutch claw on the end face of the final stage gear on the side and arranging a sleeve between the final stage gear on the forward and reverse sides, it is possible to cope with the longitudinal sliding of the axis of the floating spindle. A clutch mechanism such as a tapper, wherein the needle roller meshes with one of the clutch pawls of the final stage gear on the forward and reverse sides via the sleeve, so that the direction of rotation thereof can be changed as appropriate.