JPH0611734Y2 - Turret type chuck - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a turret type chuck having a plurality of working tools for carrying a plurality of parts.

[Prior Art] As this type of chuck, there are a work tool exchange type and a turret type. The former is troublesome to replace and there are many restrictions on space and the like. The piping for was in the way.

[Purpose of the Invention] In view of the above points, the present invention proposes a turret type chuck which requires less piping and, in the case of a single-acting type, does not require piping.

In order to achieve the above-mentioned object, the present invention has a working piston driving fluid passage formed in a positioning piston, a housing supporting a driving source for indexing and rotating at equal intervals, and the driving source. Turret head fixed to the output shaft of
A plurality of working tools supported by the turret head at intervals of indexing rotation angles, a positioning hole provided in a portion of the turret head facing the housing, a positioning hole corresponding to each working tool, and a positioning hole corresponding to the working tool to be used. A positioning pin that slidably fits into the housing in a portion facing the hole and that moves in and out of the hole; a forward / backward drive means for the pin; and a working tool driving fluid passage provided in the housing and connected to the pin. The object was achieved by a turret type chuck in which a communication passage connecting the fluid passage and the work implement is formed in the turret head between the hole and the work implement.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

Configuration The indexing rotation device 5 is fixed to the housing 1, and the indexing shaft 51 is rotatably supported by the bearings 6, 6. The bearing 6 is positioned by a bearing retainer 16 fixed to the housing 1. The turret head 2 is fixed to the tip of the indexing shaft 51 via a coupling bush 21.

And the cover 26 covers.

Chuck 3 is radially fixed to turret head 2 at equal intervals (not shown), and bushes 23 are press-fitted into positioning holes 22 corresponding to each chuck. An air passage 24 with an annular groove on the outer periphery is formed in the bush 23, and the cylinder portion 31 of the chuck 3 and the air passages 25, 3 are formed.
It communicates via 2. This communication structure is for each chuck 3
It is provided for each.

The piston 4, which serves as a positioning pin, faces the positioning hole 22 corresponding to the chuck (rotationally indexed) 3 to be used, in a freely movable manner.

The piston 4 is slidably fitted in a cylinder chamber 14 and a plug 15 which are formed at the tip of the housing 1 and are opened. Stopper 15
Is fixed to the housing 1.

The piston 4 is hollow and is urged by the spring 42 to advance.

The housing 1 is provided with a chuck port 12 connected to the cylinder chamber 14 and a piston return port 13.

Reference numeral 11 is a mounting portion fixed to a work shaft of the robot or the like, and 7 is a seal ring.

Operation FIG. 1 shows a state in which pressurized air is supplied to the port 13 and the piston 4 is returned. Here, the indexing rotation device 5 is driven to rotate the turret head 2 and the necessary chuck 3 is shown. Index to a position. Then, when the port 13 is set to normal pressure, the piston 4 rushes into the bush 23 by the urging force of the spring 42, and the positioning is completed.

At this time, if pressurized air is supplied to the port 12 side, the piston 4
Will be a backup for the advance of.

Pressurized air on the port 12 side is supplied to the passages 41, 24, 25, 3
2 to reach the cylinder portion 31 of the chuck 3. Therefore, the pressurized air can drive the chuck 3, that is, the claw can be opened or closed.

The chuck generally has a single-acting type and a double-acting type.If it is a single-acting type, it can be made to function with only the above pressurized air. It may be provided in communication with the source.

When changing to another chuck, the port 12 is set to normal pressure, pressurized air is supplied to the port 13, and the poston 4 is returned.
The above operation may be performed.

[Modification] Although the spring 42 is provided for returning the piston 4 in the above embodiment, as shown in FIG. 2, the spring 42a urges the piston 4a to return, and the pressurized air in the port 13a causes the piston 4a to advance. The pressurized air in the port 12a may be guided to the turret head through the passage 41a.

Further, the piston 4 may be a positioning pin that has been conventionally used.

Further, although the mounting portion 11 and the chuck 3 are not on the same straight line in the above-described embodiment, they can be on the same straight line by configuring as shown in FIG.

[Advantages of the Invention] The present invention configured as described above can reduce piping with a simple structure, and can eliminate piping if the chuck is a single-acting type.

Further, since the positioning pin also serves as the fluid passage, another connecting structure is not necessary.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional configuration view of an embodiment of the present invention, FIG. 2 is a partial view of a modification, and FIG. 3 is an explanatory view of another embodiment. 1 ... Housing, 2 ... Turret head, 3 ... Chuck, 4 ... Piston, 5 ... Indexing rotation device.

Claims (1)

[Scope of utility model registration request] 1. A housing that supports a drive source that rotates at regular intervals for indexing, a turret head fixed to an output shaft of the drive source, and a plurality of work tools that are supported by the turret head at intervals of indexing rotation angles. The turret head is provided in a portion facing the housing, and is slidably fitted into a positioning hole corresponding to each work tool and a housing facing the positioning hole corresponding to the work tool to be used, and is inserted into and removed from the hole. Positioning pin, a forward / backward driving means for the pin, and a working tool driving fluid passage provided in the housing and connected to the pin. The turret head between the pin, the hole, and the working implement is provided with the fluid passage and the working implement. Turret type chuck with a connecting passage formed.