JP2660386B2 - Workpiece cleaning method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of cleaning a workpiece for removing foreign matter such as cutting chips, cutting oil and abrasives used in machining an article formed by machining or the like. .

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 61-8184 discloses an example of a conventional work cleaning apparatus. According to this, a work is immersed in water, a nozzle is arranged at a fixed distance from the surface of the work, pressurized water is sprayed from the nozzle toward the surface of the work, and cavitation is generated in the vicinity of the surface, causing cavitation near the surface. The adhered foreign matter is removed. Then, when cleaning the outer circumferential side surface of the work in the circumferential direction over the entire circumference, the work is rotated and the injection nozzle is reciprocated with respect to the work. Such a cleaning method is unnecessary when the spray cleaning area for the pressurized water sprayed from the spray nozzle is larger than the outer peripheral area of the work, but the pressurized water spray cleaning area is larger than the outer circumferential area of the work. Necessary in small cases. Here, once the rotational speed of the work and the reciprocating movement of the injection nozzle are set, they are operated at a constant speed.

[0003]

If the rotational speed of the work and the reciprocating movement speed of the injection nozzle are always constant, the circumferential outer peripheral surface to be cleaned per one rotation of the work is always constant. The cleaning of the outer peripheral side surface of the work can be performed only in a predetermined fixed range, so that cleaning unevenness occurs and a good cleaning effect cannot be obtained.
Referring to FIG. 2, the injection nozzle makes one reciprocation for one rotation of the work. According to this, a mountain-shaped cleaning trajectory A remains on the outer peripheral side surface of the work. As long as the reciprocating motion of the injection nozzle with respect to the cleaning nozzle is constant, the cleaning time does not change so that the outer peripheral side surface of the work is not cleaned in a portion outside the cleaning trajectory.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and when a spray cleaning area of pressurized water is smaller than an outer peripheral area of the work, the work of the work capable of completely removing foreign matter on the outer peripheral side in the circumferential direction of the work. It is to obtain a cleaning method.

[0005]

The object of the present invention is to immerse a rotating work in a liquid and dispose a spray nozzle reciprocating with respect to the outer peripheral side surface of the work at a position separated from the work by a certain distance. In a method of cleaning a work in which pressurized water is sprayed toward a work through a liquid, the method is achieved by changing a rotation speed of the work with respect to a reciprocating movement of an injection nozzle of the work or a reciprocating movement speed of the work of the injection nozzle with respect to the rotation of the work. .

[0006]

By changing the rotation speed of the work nozzle relative to the reciprocating movement of the injection nozzle, or by changing the reciprocating movement speed of the spray nozzle relative to the work, the cleaning trajectory with respect to the circumferential outer peripheral side of the work can be changed. In addition, the entire outer circumferential side surface in the circumferential direction of the work can be cleaned, and a good cleaning effect can be obtained.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the work cleaning method according to the present invention will be described below with reference to FIG. Reference numeral 1 denotes a cleaning tank in which a liquid is stored. A cylindrical work W is rotatably arranged by the work support 2 in the liquid in the cleaning tank. Reference numeral 3 denotes a rotary drive member connected to the work support 2, such as a DC motor whose rotation speed is variably changed. Reference numeral 4 denotes an injection nozzle arranged in the liquid in the cleaning tank 1 and at a distance from the workpiece W by a predetermined distance. Pressurized water is supplied from the injection nozzle 4 through the liquid in the cleaning tank 1 to the work. It is injected toward the outer peripheral side surface of W. The injection nozzle 4 is attached to an operating rod 5, and a reciprocating drive member 6 that can reciprocate the operating rod 5 and change the reciprocating speed thereof is connected to the operating rod 5. The reciprocating drive member 6 is, for example, a hydraulic cylinder.

The cleaning of the work is performed as follows. First, the rotation speed of the work W is changed by the rotation drive member 3 every one rotation or every plural rotations of the work W in a state where the reciprocation movement speed of the injection nozzle 4 by the reciprocation drive member 6 is kept constant. is there.

Secondly, the rotation of the work W is held in a constant rotation state by the rotary driving member 3, and in this state, the reciprocating movement speed of the injection nozzle 4 is changed by the reciprocating driving member 6. According to the above, the cleaning trajectory A of the spray cleaning area of the pressurized water sprayed from the spray nozzle 4 to the outer peripheral surface of the work W intersects complicatedly on the outer peripheral surface of the work W. It is well washed without leaving.

In addition to the operation of the work W and the spray nozzle 4, the rotation of the work W may be stopped for a short time while the spray nozzle 4 is reciprocated at a constant speed.
Further, the reciprocating movement of the injection nozzle 4 may be stopped for a short time while the work W is rotated at a constant rotation speed.

[0011]

As described above, according to the work cleaning method of the present invention, the rotational speed of the work relative to the reciprocating movement of the injection nozzle of the work or the reciprocating movement speed of the work of the injection nozzle relative to the rotation of the work is changed. Therefore, even when the spray cleaning area of the pressurized water sprayed from the spray nozzle is smaller than the outer circumferential area of the work, it is possible to completely remove the foreign matter on the outer circumferential side surface in the circumferential direction of the work, and to clean the work. It was something that could be done effectively.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a main part showing a cleaning device.

FIG. 2 shows a cleaning trajectory with respect to a planar development of an outer peripheral side surface of a work by a conventional cleaning method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cleaning tank W Work 3 Rotation drive member 4 Injection nozzle 6 Reciprocation drive member

Claims (1)

(57) [Claims] 1. A rotating work is immersed in a liquid, an injection nozzle reciprocating with respect to the outer peripheral side surface of the work is disposed at a position separated from the work by a predetermined distance, and pressurized water is supplied from the injection nozzle through the liquid to the work. A method for cleaning a work to be ejected toward a workpiece, wherein the rotation speed of the work nozzle relative to the reciprocating movement of the spray nozzle or the reciprocating movement speed of the spray nozzle relative to the rotation of the work is changed.