JPS6097302A - Cleaning method of fine hole - Google Patents

Abstract

PURPOSE:To remove surely the foreign matter of a holding member having the fine through-hole in the stage of cleaning said hole by inserting a wire-shaped body on which a fine particulate cleaning agent is coated into said hole to clean preliminarily the hole then cleaning the hole by ultrasonic cleaning, etc. CONSTITUTION:A wire-shaped body 16 for preliminary cleaning having the outside diameter slightly smaller than the inside diameter size of the fine hole 11 of a holding member 11 which has the fine through-hole 11 and is used to hold the bar-shaped bodies such as optical fibers or the like inserted into the hole from both end sides in the state of butting the end faces to each other is prepd. in the stage of cleaning said hole 11. A cleaning agent 17 consisting of fine particles having polishing and cleaning functions is coated on the outside circumference of such body 16 and is inserted into the hole 11. The body 16 is relatively moved with the hole 11 to clean preliminarily the hole. The body 16 is then removed from the hole 11 and the hole 11 is cleaned by ultrasonic cleaning, etc. by which the foreign matter 12 in the hole 11 is removed.

Description

Detailed Description of the Invention (a) Technical Field of the Invention The present invention involves inserting a small-diameter rod-shaped body, such as an optical fiber, from both ends and holding and fixing the rod-shaped body in a state where the end surfaces of the rod-shaped body are abutted against each other. The present invention relates to a method for cleaning a small diameter hole in a holding part having a small diameter through hole for cleaning.

←) Background of technology For example, in optical components such as optical attenuators and optical coifters, optical fibers formed into a small diameter are inserted from both ends and the end faces of the optical fibers are butted against each other. A holding part having a small through hole for holding and fixing is often used. FIG. 1 is a longitudinal sectional view of a holding member having a small diameter hole of this kind shown as an example. In the figure, reference numeral 10 indicates a holding member; 11 indicates a small diameter hole; 12 indicates foreign matter such as cutting oil and chips remaining in the small diameter hole 11;
Reference numeral 13 indicates a cutout portion for inserting a fixing adhesive or the like. The inner diameter of the small diameter hole 11 is, for example,
It is formed with a small profile dimension of about 0.1+III+. Then, the optical fibers blown up in a dense layer into this small diameter hole 11 are connected to both end surfaces 10a and 10b1 of the retaining member io.
When inserted from lljl, foreign matter 12 is layered on the opposing edge of the inserted optical fibers, causing a source of optical coupling, optical attenuation, etc. between these two optical fibers q'
This will lead to f-sexuality. Therefore, the small diameter hole 11 in this type of holding part opening 10 must be made by completely removing the material 12 adhering to its inner surface.

(C) i6 Previous Technology and Problems FIG. 2 is a diagram for explaining the conventional cleaning method for small diameter holes.

10b is a diagram showing optical fibers 14, 15 inserted into small diameter holes 11 from 10b1llill, respectively. still,
In the same figure, t'l! The first part of J and the part of 1Ijj or the priest part are indicated by the same reference numerals, and their explanation will be omitted. A conventional method for cleaning small holes has been an ultrasonic cleaning method in which a cleaning liquid such as alcohol is used and the holding part is immersed in the cleaning liquid. However, with this method,
As mentioned above, the inner diameter of the small hole 11 is small (approximately 0.1M), so it is often not possible to completely clean the inside of the small hole 11.
In many cases, a portion of foreign matter 12 such as cutting oil and chips during machining remains on the inner surface of the small diameter hole 11. For this reason,
When the optical fibers 14 and 15 that are tightly fitted into the small diameter hole 11 are inserted from both ends i+1i 110a and 10b of the holding blade (in the directions of arrows A and B), the optical fibers 14 and 15 are abutted against each other. 15 respective end faces 14a and 15
This results in the foreign matter 12 being layered on a. Optical fiber 14.
The end faces 14m and 15b of 15 are mirror-finished and may have several layers of optical films (attenuation film, filter film, etc.). Therefore, even if a small amount of foreign matter 12 is deposited on such end surfaces 14a and 15a, this foreign matter 12 will have a negative effect on the optical efficiency between the optical fibers 14 and 15 (for example, increase in optical coupling loss, (deterioration of optical attenuation characteristics, etc.). As described above, the conventional cleaning method for small diameter holes has the problem of not being able to reliably remove the foreign matter inside the small diameter holes 11, which causes the problem of causing the above-mentioned unfavorable results. There is.

B) Purpose of Investigation The purpose of the present invention is to address the above-mentioned problems of the prior art and to provide a complete method for cleaning small diameter holes that can easily and reliably remove foreign matter within the diameter holes. According to the present invention, in order to achieve the above object,
Insert a small diameter rod-shaped body from both ends to reach +J.
In a holding member that holds and fixes a through-hole with the end surfaces of the shaped bodies abutted against each other, in the cleaning method for a pongee diameter hole described in J, an outer diameter that is slightly smaller than the inner diameter of the narrow diameter hole indicated in m is used. A pre-cleaned J1J linear body with a total diameter of 4 is prepared, a purifying agent in the form of imitative particles having a polishing function and a cleaning function is applied to the outer periphery of the linear body, and then the linear body is inserted into the narrow hole. Then, the linear body is moved relative to the small hole for preliminary cleaning, and then the linear body is pulled out from the small hole, and the small hole is exposed to ultrasonic waves. A method for cleaning a narrow hole is provided, which is characterized in that foreign matter in the fine injection hole is removed by cleaning with a cleaning means such as the above.

(f) Original example of a real gun Below, embodiments of the present invention will be described in detail based on the drawings.

3 and 4 are diagrams to congratulate the implementation and development of the present invention. FIG. 3 is a diagram showing the state in which the pre-cleaning linear body 16 is inserted into the small diameter hole 11, and FIG. The tip fibers 14 and 15 are inserted into the small diameter hole 11 after cleaning from both ends of the holding part 1'IO, and the end faces 14a of the fibers 14 and 15 are inserted.

Figure (A) showing the state in which 15a are held together with the frame and 17iil seen from arrow E strength in Figure 0)
This is a diagram showing the iLft1 diagram (b). In these figures, the same parts or equivalent parts as in the above-mentioned Fig. 1.2 are indicated by the same reference numerals, and their a and ts are omitted. A nylon wire 16 is used as the body. The outer diameter of the nylon wire 16 is 20 mm or more than the inner diameter method (approximately 0.1 figure) of the threaded hole 11.
It has been made smaller by about 30 μm. Then, 61 coats of IshiF polishing paste (cleaning agent 917) consisting of fine particles with a particle diameter of 1 μm are applied around the circumference of the nylon wire 16.Temporarily, this nylon wire 16 is As shown in FIG. Rotational movement in the circumferential direction (arrow direction)
Contrary to the case of upper 6α, protection 3gj capital city engineering 0 begging nylon ¥1
It may be possible to make a phase shift of 1 for 6, or it may be made to have a relative difference gJ between these two movements. To this, A-r is attached to the inner part of Tsukuda 1 diameter hole 11.
The tip of the metal is peeled off from the inner Bu to the tip metal, and the tips of the minute irregularities in the inner circumference of the pongee diameter hole 11 are also uniformly polished and removed. surface,
Depending on the conditions such as the length of the small diameter hole 11 and the crushing of the foreign object 12, the rotation of the metal 16 and the rotational movement of the nylon sword is sufficient. At the seventh stage, the nylon 16 is extracted from the hole 11, and the holding member 10 is washed, dipped in alcohol (for example, due to alcohol), and then washed using a method such as the ultrasonic cleaning method. The inside of the narrow hole 11 is cleaned. Thereby, the foreign matter 12 within the small diameter hole 11 is reliably removed together with the polishing base 17.

Therefore, depending on the uncertainty, the foreign object 12 can be
The optical fibers 14 and 15 are inserted into the small diameter hole 11 from which the
Even if there are 111 people, the end faces 14a and 15 abutted against each other
In a, as shown in FIG. 400, there is a foreign object 12 (FIG. 1).
There is no layer of fiber, and therefore the optical fiber 1
4, 15 The optical 6 notes between the two can always be obtained with ease, and as a result, the yield rate of the product can be improved.
C@ru.

Although the present invention is exemplified as an optical component as described above, it is not limited thereto, and may be applied to other German components without departing from the gist of the 2t-invention. be.

(G) Effects of the Invention As described above in detail, the method for cleaning small diameter holes according to the present invention uses a cleaning linear body (fliX, nylon wire) and a cleaning agent ( If it's flI~
By applying a paste consisting of fine particles and performing preliminary cleaning, foreign matter inside the small hole can be reliably removed. It is possible to reliably prevent foreign matter from forming on the butt shoulder circumference of a small diameter rod-shaped body (for example, 9-phi'), and as a result,
It has a great effect in that it can always provide stable predetermined characteristics without deteriorating the predetermined characteristics of the part (for example, 1 optical%Note), and contributes to improving product yields. It is something to do.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a holding member 10 having all of the small diameter holes 11 of this kind shown as an example, Fig. 2 is a diagram illustrating a conventional method for cleaning small diameter holes, and Fig. 3 and Fig. 4 are diagrams for explaining the method of cleaning small diameter holes of the present invention.
The figure is a longitudinal cross-sectional view showing a state in which a nylon wire (preliminary cleaning wire) whose outer periphery is coated with polishing paste (#Hanabatake) 17 is inserted into a 16-karat gold thin hole 11. Figure 4 (a) is after cleaning. The original fiber (rod-shaped body) 14.15 is inserted into the small diameter hole 11 from both ends of the holding member lO, and the original fiber (rod-shaped body) 14.15 is inserted into the small diameter hole 11 of
A vertical cross-sectional view 0) showing a state in which the 15a are butted against each other and held tightly; (a) An end view viewed from the direction of arrow E in the figure; (b) A view showing t-O...Holding Member, lOa, 10b... Holding member (
10) End face, 11...Small diameter hole, 12...Foreign matter (cutting oil chips, etc.), 13...Notch (insertion hole for fixing adhesive, etc.), 14.15...・Optical fibers (thin diameter rod-shaped bodies), 14 a + l 5 a ”・Optical fiber 1
4.15 abutting end faces, 16... nylon wire (linear body for pre-cleaning), 17... polishing paste (cleaning agent consisting of fine particles). Patent applicant: Fujitsu Limited, Patent attorney: Akira Amaki, Patent attorney, Kazuyuki Nishi, Patent attorney: 1) Shin, Patent attorney: Yasushi Yamaro, Patent attorney

Claims (1)

[Claims] 1. The small diameter of the holding member having a small diameter through hole for inserting a small diameter rod from both ends and holding and fixing the rod with the end surfaces abutting each other. In the hole cleaning method, a preliminary cleaning linear body having an outer diameter slightly smaller than the inner diameter of the narrow hole is prepared, and particulate cleaning particles having a polishing function and a cleaning function are added to the outer periphery of the linear body. The agent is applied in advance, and then the linear body is inserted into the small diameter hole, and then the linear body is moved relative to the small diameter hole for preliminary cleaning, and then the linear body is inserted into the small diameter hole. Pull it out from the hole,
A method for cleaning a narrow hole, characterized in that the fine hole is then cleaned by a cleaning means such as ultrasonic cleaning to remove foreign matter within the narrow hole. 2. The method for cleaning a narrow hole according to claim 1, wherein the narrow rod-like body is an optical fiber, and the pre-cleaning linear body is a nylon wire.