JPH0746448Y2 - Check rotary air blow - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field of the Invention The present invention relates to cutting chips attached to a chuck of a machine tool such as a lathe,
The present invention relates to an air blow for removing dust and the like.

2. Description of the Related Art Conventionally, in a machine tool such as a lathe, an air blow process for removing chips, dust and the like adhering to the chuck claws and the work is always required when the work is attached and detached. When performing this air blow manually, while confirming the result by rotating or reciprocating the nozzle, in the case of automatic, while blowing the air to the chuck claw while rotating the main shaft,
Alternatively, a method is adopted in which the number of nozzles is increased and air is blown all at once.

Problems to be Solved by the Invention The former case of the automatic method described in the prior art has a problem that it takes time to rotate (start and stop) the spindle, and the work attaching and detaching time becomes long, and the latter Blows air from multiple directions all at once, so the effect of just having a large number of nozzles does not improve because the force of the air weakens, and more nozzles cause more interference with the turret, loader, robot, etc. There are problems such as.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide an apparatus capable of effectively blowing air without rotating a main shaft. .

Means for Solving the Problems In order to achieve the above object, a rotary air blow of a chuck according to the present invention comprises an air delivery housing concentrically and rotatably provided on a front side surface of a headstock. And a drive member for rotating air, an air supply member for sending air to the housing, and a nozzle provided in the housing for ejecting air toward the chuck gripping claw portion.

When the cutting work on the workpiece gripped by the spindle chuck is completed, the spindle is stopped, the flow path is opened by the switching valve of the air supply member, and air is ejected from the tip of the nozzle toward the chuck gripping claw part, and simultaneously rotates. The air delivery housing is rotated by the drive member, and the nozzle is rotated around the outer periphery of the chuck while ejecting air from the tip to blow air.

EXAMPLE An example will be described with reference to FIGS. 1 and 2.

In a known lathe, a bearing housing 2 is fitted in a horizontal hole 1a formed in a headstock 1, and a main shaft 4 is rotatably supported by a bearing 3 fitted in the bearing housing 2. There is. A chuck 5 is fitted on the tip of the main shaft 4, and the chuck 5 has a grip claw 5a which is opened and closed by a driving device (not shown). Further, an air delivery housing 8 is rotatably supported by a bearing 7 fitted to the end of the bearing housing 2 via a collar 6. Housing 8
Has an integral gear 9 at the center of the outer periphery, and has a rear outer periphery 8a.
Is a joint ring fixed to the front end surface of the headstock 1 concentrically with the spindle.
The center hole of the ring 11 is fitted with a slight gap, and the center hole of the ring 11 and the rear outer peripheral portion 8a of the housing are formed on the air rotary joint surface. An L-shaped bent channel 11a is bored in the joint ring 11, and the channel 11a communicates with a tip opening of a channel 1b bored in the headstock, the tip of which is an inner circumferential groove. It is opened in 11b. Air is sent to the flow path 1b from an air source P provided outside the machine via an electromagnetic switching valve 12.

The housing 8 is provided with air passages 8b bent in an L shape at equal intervals on the circumference, and the air passages 8b are formed in the inner peripheral groove 11b.
There is an opening at the corresponding position and the front. A front lid 13 is concentrically fixed to the front surface of the housing 8, and the front lid 13 has a center hole in the chuck 5.
It is fitted with a slight gap on the outer periphery of the headstock 1
The front part of the cover 14 which is fixed to the front end face of the shaft concentrically with the main shaft,
A gap between corresponding portions of the front lid 13 is formed in the labyrinth seal. And the air flow path 8b opening to the front of the housing 8
In addition, a plurality of nozzles 15 are screwed in parallel with the main shaft with the front lid 13 sandwiched therebetween, and the tip end of the nozzle is bent and faces the chuck gripping claw 5a side. Furthermore, a motor 16 is attached to the tip of the headstock 1.
Is provided in parallel with the main shaft 4, a pinion 17 fitted to the output shaft of the motor 16 is meshed with the gear 9, and the motor 16 rotates the housing 8 and the nozzle 15.

Next, the operation of this embodiment will be described.

When the cutting work on the workpiece gripped by the grip claws 5a of the spindle chuck 5 is completed, the spindle 4 is stopped and the solenoid switching valve 12
The solenoid SOL1 of the
Air is ejected from the tip of the nozzle 15 via 1b, 11a, and 8b.
At the same time, the motor 16 is energized and the housing 8 is rotated via the pinion 17 and the gear 9, and the chuck gripping claw 5a starts from the tip.
The nozzle 15 rotates around the chuck 5 while ejecting the air toward, and blows away chips, dust, cutting fluid, etc. for cleaning.

When the nozzle 15 is stopped at a fixed position in order to avoid interference with the tool rest or the like during processing, a cylinder 11c is provided on the joint ring 11 in parallel with the axis as shown in FIG. The tip of each of the gears is constantly urged by a spring 18 so as to project toward the left side surface of the gear 9, and further the position of the gear corresponding to the left side surface 1
A recess is provided at the position where the tip of the piston 19 engages, and during air blow, the piston rod retracts against the force of the spring 18 and moves away from the recess, and the solenoid SOL1 of the electromagnetic switching valve 12 and the motor
When the spring 16 is de-energized, the piston rod may be projected by the spring 18 and the tip may be engaged with the recess to stop the housing 8 and the nozzle 15 at a fixed position.

Further, it is possible to stop the fixed position by controlling the rotation of the motor 16.

Further, the rotation of the housing 8 and the nozzle 15 is not limited to the rotation performed by the motor 16, and the rotational force can be obtained by utilizing the pressure of the air jetted from the tip of the nozzle.

Effect of the Invention Since the present invention is configured as described above, it has the following effects.

Since an air delivery housing is provided concentrically and rotatably with the spindle on the front side of the headstock, and the housing is rotated by the drive member so that air is ejected from the rotating nozzle toward the chuck gripping claw portion. It is possible to completely and efficiently remove chips and the like adhering to the chuck without rotating the spindle, and it takes a long time to start and stop for removing chips. Cycle time can be shortened in automation specifications.

[Brief description of drawings]

1 is a sectional view of the rotary air blow of the chuck of this embodiment, FIG. 2 is a perspective external view of the rotary air blow of the chuck of this embodiment, and FIG. 3 is a rotary air blow of the chuck of another embodiment. It is a partial view showing a fixed position stop mechanism. 1 ... Spindle base, 4 ... Spindle 5 ... Chuck, 15 ... Nozzle

Claims (1)

[Scope of utility model registration request] 1. An air delivery housing concentrically and rotatably provided on a front side surface of a headstock, a drive member for rotating the housing, an air supply member for sending air to the housing, and the housing. A rotary air blower for a chuck, which is provided with a nozzle for ejecting air toward a chuck gripping claw portion.