JPS63237836A - Cleaning device for chuck in machining system of workpiece - Google Patents

Abstract

PURPOSE:To perform sufficient cleaning, by opening a valve unit by a cleaning nozzle through an increased pressure of air from a through hole of an advanced piston rod while injecting air to be released toward a chuck from injection holes and closing the valve unit by reducing the pressure of air. CONSTITUTION:If air is supplied from an air supply part 13, a piston rod 14 advances with a cleaning nozzle 17, and if the air from a through hole 15 increases a pressure till a ball valve unit 18 is pressed, a device, which presses the valve unit 18 by the air to be opened against a spring 19 injecting the air from injection holes 21 into a chuck 24, performs cleaning. And the device, which closes the valve unit 18 of the air from the through hole 15 reduces the pressure by releasing the air, retracts the piston rod 14 with the cleaning nozzle 17 by air from an air supply part 12 in a cylinder 11, repeating this operation. In this way, the device, which injects the air in a condition that the cleaning nozzle most approaches the chuck, permits sufficient cleaning to be performed while compactness to be attained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a chuck cleaning device in a workpiece machining system that uses jet force to clean and remove chips adhering to the workpiece chuck of a cutting machine or grinding machine. be.

[Prior art]

Cleaning the chuck in a workpiece processing system is an essential task, and for example, a cleaning device as shown in FIG. 1 is used. In the figure, 1 is a tool holder, 2 is a cleaning nozzle, 3 is an air injection hole, and 4 is a nut.

Such a cleaning device, for example, is attached directly to the main body of a cutting machine that houses a workpiece chuck (hereinafter sometimes abbreviated as chuck), and blows air from the side of the chuck to clean the chuck. However, according to this cleaning device, the cleaning 7X' 2 which injects air must be kept away from the movement range of the rotating chuck, so the injection nozzle 2 is placed inside the chuck. The distance to the center of the chuck is large, and therefore the air jet force against the chuck is weakened, resulting in an unavoidable reduction in the cleaning effect, making it impossible to adequately clean the center of the chuck.

For this reason, the cleaning nozzle 2 of many cleaning devices is movably attached to the grinding surface, and when cleaning, it is moved to a position facing the front center of the chuck, and after cleaning, it is moved to the side of the chuck, which is the original position. Measures are being taken to move it.

[Problem that the invention seeks to solve]

However, with this method, air is blown from the front side of the chuck to the center of the chuck, so it has the advantage of being able to perform extremely good cleaning, and is ideal from the standpoint of cleaning effectiveness. Cleaning of cleaning equipment/:Xle 2
Since it is necessary to move to the cleaning position and the standby position, a complicated movement mechanism is required separately, which increases the cost. Another problem was that the device could not be installed.

The present invention was devised in view of such problems, and is a workpiece processing system in which the cleaning nozzle and the transfer IM [structure are compactly integrated] without the need to provide a special transfer mechanism for the cleaning nozzle. It is an object of the present invention to provide a cleaning device capable of sufficiently cleaning a chuck part.

[Means for solving problems]

The structure of the present invention to achieve the above object is that a chuck is provided with a cleaning nozzle that moves back and forth together with the piston rod at the tip of the piston rod that moves back and forth in the cylinder due to air pressure difference between the front and rear parts of the piston cylinder. A cleaning device, wherein the piston sill has an axial through hole for introducing air from the rear of the piston cylinder,
A valve body is provided that opens when the pressure of air increases from the through hole of the piston rod when the cleaning nozzle advances, and an air injection hole is provided to release air from the opened valve body to the chuck. The valve body stops due to reduced pressure,
The gist of this is that the piston rod is moved backward by air at the front of the piston cylinder.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

FIG. 2 shows a sectional view of the chuck cleaning device of the present invention.

In the figure, 11 is a piston cylinder, 12 is a front air supply part, 13 is a rear air supply part, 14 is a piston rod, 15 is a through hole, 16 is a rod rotation stopper, 17
is a cleaning nozzle, 18 is a ball valve body, 19 is a spring, 20
Reference numeral 21 indicates a blind stopper, and 21 indicates an air injection hole, which constitute the cleaning device of the present invention.

In this cleaning device, air supply sections 12 and 13 for supplying air are provided at the front and rear parts of the piston cylinder 11. A piston rod 14 is provided. A cleaning/spool 17 is attached to this tip.

The piston rod 14 is provided with a through hole 15 in the axial direction through which air is introduced from the rear air supply section 13, and a cleaning/slip 17 attached to the tip thereof is a ball valve body that is pressed and closed by a spring 19. 18 are provided.

This suppression is regulated by the tightening strength of the plug 20. Further, a ball valve body 18 is released 117 from the cleaning nozzle 17.
Air injection holes 21 for discharging air flowing in from the through hole 15 of the piston rod 14 are provided on the side surface.

[Action of the invention]

In the cleaning device of the present invention configured in this way, the piston rod 14 moves forward together with the cleaning nozzle 17 by the air from the air supply section 13, that is, after the cleaning nozzle 17 moves forward, it penetrates until the ball valve body 18 is pressed. When the air pressure from the hole 15 is increased, the ball valve body 18 is pushed back and the valve body is opened. At this time, air flows from the through hole 15 of the piston rod 14 through the ball valve body 18 and is discharged from the air injection hole 21 (FIG. 3). When the air is released and the pressure of the air from the through hole 15 is reduced, the ball valve body 18 is compressed by the spring 19.
is closed, and the piston rod 1t14 moves backward together with the cleaning nozzle 17 by the action of the air supply section 12 at the front of the piston cylinder 11. This operation is then repeated.

FIG. 2
Reference numeral 2 denotes a cover that surrounds the automatic cutting machine, and the piston cylinder 11 of the cleaning device of the present invention is attached to a bracket 23. 24 is a chuck, 25 is a workpiece, and when the cleaning nozzle 17 injects air, the chuck 24
The machine moves to the center of the machine, blows off the chips, and after blowing air, moves to the standby position.

〔Effect of the invention〕

As described above, the cleaning device of the present invention sprays air with the cleaning nozzle closest to the chuck in the workpiece processing system, so that sufficient cleaning can be performed.

In addition, since the cleaning nozzle and the piston cylinder for moving the cleaning nozzle are integrated and compact, it is easy to install in an automatic cutting machine, etc. (and can be installed at low cost).

[Brief explanation of drawings]

f:tS1 is a cross-sectional view of the main part of a conventional cleaning device, and FIG. 2 is a cross-sectional view of the chuck cleaning device of the present invention. FIG. 3 is an explanatory diagram showing air injection, and FIG. 4 is a schematic diagram in which the cleaning device of the present invention is incorporated into an automatic processing system for a workpiece. 1... Tool holder 2.17... Cleaning nozzle 3
, Zl...F injection hole 11...Piston cylinder 12, 13...Air supply part 14...Piston rod 15...Through hole 18...Valve body 19...Spring 20... blind plug

Claims (1)

[Claims] 1) A chuck cleaning device that is equipped with a cleaning nozzle that moves back and forth with the piston rod at the tip of a piston rod that moves back and forth in the cylinder due to the air pressure difference between the front and rear of the piston cylinder. It has an axial through hole that introduces air from the rear of the cylinder, and is equipped with a valve body that opens when the air pressure increases from the through hole of the piston rod when the cleaning nozzle moves forward. A chuck in a workpiece machining system characterized by having an air injection hole that discharges air into the chuck, a valve body being closed by the depressurization of the air from the through hole, and a piston rod being moved backward by the air at the front of the piston cylinder. cleaning equipment.