JPH01106105U - - Google Patents
Info
- Publication number
- JPH01106105U JPH01106105U JP20127987U JP20127987U JPH01106105U JP H01106105 U JPH01106105 U JP H01106105U JP 20127987 U JP20127987 U JP 20127987U JP 20127987 U JP20127987 U JP 20127987U JP H01106105 U JPH01106105 U JP H01106105U
- Authority
- JP
- Japan
- Prior art keywords
- chuck
- base
- nut
- planetary gear
- pawls
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Gripping On Spindles (AREA)
Description
第１図は本考案にかかるドリルチヤツク機構の
好適な実施例を示す要部縦断面図、第２図は従来
のドリルチヤツク機構の１例を示す一部破断図で
ある。
３０……ドリル軸、３２……チヤツクベース、
３２ａ……チヤツク爪ガイド溝、３４……チヤツ
ク爪、３４ｂ……内歯部、３６……チヤツクナツ
ト、３８……チヤツクハンドル、４０……遊星歯
車、４２……内歯リング。
FIG. 1 is a vertical cross-sectional view of a main part showing a preferred embodiment of a drill chuck mechanism according to the present invention, and FIG. 2 is a partially cutaway view showing an example of a conventional drill chuck mechanism. 30...Drill shaft, 32...Chuck base,
32a...chuck pawl guide groove, 34...chuck pawl, 34b...internal tooth portion, 36...chuck nut, 38...chuck handle, 40...planetary gear, 42...internal tooth ring.
Claims (1)
が設けられたチヤツクベースと、 前記チヤツクベースのチヤツク爪ガイド溝にチ
ヤツクベース軸と所定の傾きで摺動自在に導かれ
るよう装着され外周にチヤツクねじが設けられた
複数のチヤツク爪と、 前記チヤツクベースの周囲に該チヤツクベース
と回動自在に装着され前記チヤツク爪のチヤツク
ねじと噛み合いその回転によつてチヤツク爪をチ
ヤツクベース軸に対して所定の傾きで往復駆動す
るナツトねじ部を有するチヤツクナツトと、 前記チヤツクベースに回動自在に支持されたチ
ヤツクハンドルと、 該チヤツクハンドルの側面に支持され前記チヤ
ツクナツトの尾端に設けられた内歯部と噛合する
遊星歯車と、 前記遊星歯車と噛み合い前記チヤツクベースと
結合される内歯リングと、を含み、 前記チヤツクナツトの内歯部と内歯リングの内
歯とは共に遊星歯車と噛合しながらそれらの歯数
がわずかに異なる値に設定されており、 チヤツクベースとチヤツクハンドルとを相対回
転させることによつて、前記歯数の異なる内歯リ
ングとチヤツクナツト内歯部とからなる差動歯車
機構によつて、チヤツクナツトが十分な締め付け
力でチヤツク爪をスライドさせることを特徴とす
るドリルチヤツク機構。[Scope of Claim for Utility Model Registration] A chuck base fixed to a drill shaft and provided with a plurality of chuck pawl guide grooves, and a chuck base installed in the chuck pawl guide groove so as to be slidably guided at a predetermined inclination relative to the chuck base shaft. a plurality of chuck pawls each having a chuck screw provided on its outer periphery; and a plurality of chuck pawls mounted around the chuck base so as to be rotatable with the chuck base, and meshing with the chuck screws of the chuck pawls and thereby positioning the chuck pawls in a predetermined position relative to the chuck base axis. a chuck nut having a nut screw portion that reciprocates at an inclination of , a chuck handle rotatably supported on the chuck base, and an internal toothed portion supported on a side surface of the chuck handle and provided at the tail end of the chuck nut. a planetary gear that meshes with the planetary gear; and an internal toothed ring that meshes with the planetary gear and is coupled to the chuck base, and the internal toothed portion of the chuck nut and the internal teeth of the internally toothed ring both mesh with the planetary gear. The number of teeth is set to a slightly different value, and by rotating the chuck base and chuck handle relative to each other, a differential gear mechanism consisting of an internal toothed ring with a different number of teeth and an internal toothed portion of the chuck nut is used. The drill chuck mechanism is characterized in that the chuck nut slides the chuck pawl with sufficient tightening force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20127987U JPH01106105U (en) | 1987-12-29 | 1987-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20127987U JPH01106105U (en) | 1987-12-29 | 1987-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01106105U true JPH01106105U (en) | 1989-07-17 |
Family
ID=31491649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20127987U Pending JPH01106105U (en) | 1987-12-29 | 1987-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01106105U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51131980A (en) * | 1975-05-12 | 1976-11-16 | Tokichi Shimizu | Two directions differential centripetal-type four claws universal chuc k |
| JPS6299008A (en) * | 1985-10-25 | 1987-05-08 | Matsushita Electric Works Ltd | Clamping fixture |
-
1987
- 1987-12-29 JP JP20127987U patent/JPH01106105U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51131980A (en) * | 1975-05-12 | 1976-11-16 | Tokichi Shimizu | Two directions differential centripetal-type four claws universal chuc k |
| JPS6299008A (en) * | 1985-10-25 | 1987-05-08 | Matsushita Electric Works Ltd | Clamping fixture |
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