JPH0333035U

JPH0333035U -

Info

Publication number: JPH0333035U
Application number: JP9468889U
Authority: JP
Priority date: 1989-08-11
Filing date: 1989-08-11
Publication date: 1991-04-02
Anticipated expiration: 2004-08-11
Also published as: JPH0746438Y2

Description

[Brief explanation of drawings]

第１図は本考案の縦断面図、第２図は第１図の
−断面図、第３図は第１図の−断面図、
第４図は第２図のａ−ａ断面と第３図のｂ
−ｂ断面とを同時に表した拡大断面図、第５図
は第３図の−断面図、第６図は第１図の−
断面図、第７図は第２、第３のゼネバ機構の作
動説明図、第８図は工具交換アームの動作説明図
である。２……旋回軸、３……旋回用ギヤ、４……工具
交換アーム、６……駆動軸、１０……第１のゼネ
バ機構、２０……第２のゼネバ機構、２３，３３
……ゼネバ原車、２３ａ，３３ａ……ゼネバピン
、２３ｂ，３３ｂ……回り止め円弧壁、２６，３
６……ゼネバ従車、２７，３７……駆動ギヤ、４
０……位相保持機構。 FIG. 1 is a longitudinal cross-sectional view of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, FIG. 3 is a cross-sectional view of FIG. 1,
Figure 4 shows cross section a-a in Figure 2 and b in Figure 3.
5 is an enlarged cross-sectional view showing the -b cross section at the same time, FIG. 5 is a - sectional view of FIG. 3, and FIG.
A sectional view, FIG. 7 is an explanatory diagram of the operation of the second and third Geneva mechanisms, and FIG. 8 is an explanatory diagram of the operation of the tool exchange arm. 2... Swivel axis, 3... Swivel gear, 4... Tool exchange arm, 6... Drive shaft, 10... First Geneva mechanism, 20... Second Geneva mechanism, 23, 33
...Geneva original car, 23a, 33a... Geneva pin, 23b, 33b... Rotating arc wall, 26, 3
6... Geneva follower vehicle, 27, 37... Drive gear, 4
0...Phase holding mechanism.

Claims

[Scope of utility model registration request]

In a tool changer in which a drive shaft moves a pivot shaft of a tool exchange arm back and forth in the axial direction, and the pivot shaft rotates at a forward end and a retreat end, there is a space between the drive shaft and the pivot shaft. A first Geneva mechanism is provided at the forward end that engages with a rotating gear located in the middle of the pivot axis to perform a 180 degree turn, and a drive gear is provided that engages with the pivot gear at the retreating end and rotates 90 degrees. , second and third Geneva mechanisms for performing reverse rotation, and between these second and third Geneva mechanisms, when the rotation gear and each drive gear are disengaged, the second and third Geneva mechanisms are provided. A phase holding mechanism is provided to maintain the rotational phase of the Geneva driven wheels of the second and third Geneva mechanisms, and while either one of the second and third Geneva mechanisms performs an indexing operation, the other A drive mechanism for a tool changing arm, characterized in that the Geneva pin position and the shape of the rotation-preventing circular arc wall are set so that while the Geneva mechanism is idling and both Geneva mechanisms do not perform the indexing operation, at least one of the Geneva mechanisms performs the rotation-preventing operation. .