JPS58500436A - Backing material for drilling - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Backing material for drilling The present invention is capable of converting a sheet of laminated material into a panel in connection with a power, workbench or similar platform. Panel-shaped objects are used when drilling holes with a drilling tool in other flat objects. The present invention relates to a backing member that constitutes a support for a plate-shaped object or other flat-shaped object.

For example, pongee printed wiring is a laminated material made of glass fiber impregnated with synthetic resin. Comparing it to panels, sheets, boards, cards, and similar items, such as those shown in For example, when forming a hole for passing a conducting wire, the hole of the object to be drilled is It is important not to damage the edges or leave chips stuck to the material. It is.

Therefore, during the drilling process it is necessary to support the object being drilled. In the technical field, drilling and lining, such as protection and support members between workbenches and objects, etc. Use a stopper to prevent the tip of the drilling tool from entering the workbench. Prevents the formation of copper burrs 9 on the exit side of holes in both drilled parts. It is known to do. Board and epoxy resin as backing material or from glass fiber fabric attached to the board by other synthetic resin binders. It is proposed to use formed laminates. (2) However, when drilling holes in a stack of glass fiber laminates with printed wiring, The tip of the drilling tool, the backing member Φ, and the cover on the drilling tool 9, for example 250 It is heated to a relatively high temperature such as ℃, which causes the tip of the p-hole drilling tool to rotate. It melts the binder in the roadboard laminates and nesting components, making them sticky and prone to contamination. The problem is increasing the direction. Furthermore, it is formed by drilling If the edges of the holes are soft, the tendency for copper ridges to form increases. these questions In order to solve the problem, a glass fiber fabric was attached to both sides of the wooden fiberboard. It has been proposed to replace it with a genus thin film. This thin metal film, usually aluminum A thin film made of wood, reduces the tendency of the wood fiberboard to twist, as well as the drilling process. It was thought that the tip of the tool would be completely cooled and cleaned.

In practice made in connection with this inventive concept, a covering layer of a thin metal film is used. A product of a very large number of numbers that has a property that is known but has not yet been pointed out. Layers were tested. As a result of this experiment, it was found that heat is transferred from the tip of the drilling tool. The usefulness of the thin metal film properties is to create more extensive wear and friction with printed circuit boards. When the tip of the drilling tool is heated by frictional engagement with the thin metal film rather than frictional engagement, It was found that the effect of the thin metal film was canceled out by the essentially opposite effect. .

Therefore, in the same way, it is necessary to cool the drilling tool, and the drilling tool needs to be cooled down. The wooden fiberboard that forms the central layer of the component was replaced with undulating sheet metal; The holes drilled along the drilling tool during withdrawal of the drilling tool It has been proposed to draw air through flutes and flutes. Unfortunately, the drilling Greater wear when the tool must penetrate the entire thin film of added metal The air is heated as it is exposed to air, and the effect of efficient air cooling is slightly removed. Put it away.

The purpose of this invention is to suck debris and particles through the drilled holes and to Cooling the drilling tool reduces wear on the drilling tool, which is a very important point. Drilling with a wavy or fluted central layer that can be The purpose of the present invention is to solve the various problems mentioned above by providing a construction backing member. .

Another essential object of the invention is to provide an inexpensive perforated backing member. This is very important since the life of the perforated backing material is relatively short. It is.

These objects are achieved given the features stated in claim 1. The improvements stated in claims 2 to 5 are additionally provided. This is achieved by the perforated backing member according to the present invention.

The invention will be described in detail below with reference to the accompanying drawings.

Here, FIG. With a perforated backing member according to the invention for produced sheets or laminates. The hole-boring tool is schematically shown in FIG.

Figure 2 shows the same thing as Figure 1, but the perforated backing member in Figure 1. The lining member is perforated in a cross section that is substantially perpendicular to the vertical groove, that is, along the longitudinal groove conduit. It shows FIG. 3 is shown on a larger scale in cross-section of a perforated backing member according to the invention. are doing.

FIG. 1 shows a workbench 1, a pressure foot 2 and a copper plate, for example on a glass fiber laminate. Circuit t-Printed electrical circuit with holes in multiple sheets or panels 4 A drilling tool 3 for drilling and a complete drilling device are shown.

A plurality of sheets or panels 4 according to the invention are placed on a workbench l. When machining the top cover placed on the drilling machine, the panel 4 On the top surface of the sheet 1 on request vh has various advantages in special cases. 6 tons of thin sheet of suitable material such as phenol-impregnated paper with mounting base. can be used.

A plurality of sheets or panels 4 with printed circuits, a backing member 5, and a top cover 6. The stack consists of a plurality of sheets or a plurality of holes in the panel 4 and the backing member 6. The conventional method uses a plurality of loading pins 7 that penetrate through the workbench and are inserted into a plurality of holes in the workbench L. are held together and supported on the workbench 1 according to the method. To perform hole drilling , a pressure foot 2 is applied to the stack described above.

The pressure foot part 2 covers the circumference of the drilling tool 3 (or each drilling tool). The housing is equipped with a vacuum cleaner to suck out particles and dust. It is connected via an opening 8 and a tube 9 to a suction source (not shown).

The various aspects that have been described throughout the introduction regarding all conventional perforated backing members. The problem is that one layer of fluted paper Z2 and at least one surface, such as a single-surface corrugated board, A paper product consisting of one layer of fluted paper 12 and two surfaces, such as a two-surface corrugated board. Solved only by using a corrugated board such as a paper product consisting of surfaces 11 and 14. It was surprisingly discovered that The fluted conduit 10 runs through the perforated backing member. Hole machining machine, not a fool 9, which can be used as a conduit for flowing air As soon as the tip of the tool penetrates the upper surface 1lt of the corrugated board, it passes through the drilled hole. It can also be used as a conduit for suctioning dust and particles by the pressurizing foot 2. Can be done.

Air flow from fluted conduit 10 through the drilled holes The process starts immediately when the tool 3 penetrates the upper surface 11, e.g. a twisted drilling operation. The upward air flow like a cotton line-shaped flow along the tool 3 causes the drilling tool 3 to flow upwardly. This effectively cleans the edges of the drilled hole and prevents further drilling operations. After the drilling tool 3 is removed and while the drilling tool 3 is being pulled out, the drilling tool 3 is immediately While cooling and pulling out the drilling tool 3, the drilling lining member 5 and the drilling tool 3 are removed. Suction of dust and particles separated from processing tools.

However, the effect of air cooling itself is that in order to achieve air cooling, The perforation backing member has been exposed to increased wear, resulting in increased perforation. Although it has the disadvantage of increasing the frictional heat of the tool, it also has the advantage of It's not. Nevertheless, the backing member according to the invention is suitable for use with drilling tools. The desired small total volume and weight of the material, the perforation A relatively large spacer for creating the desired distance between the panel 4 to be machined and the workbench I. Due to its large thickness, it is an advantage insofar as it provides.

When the tip of the drilling tool 3 penetrates the upper surface 11f of the corrugated panel, the upper - Particles that are not sucked to the outside of Uzing 2 are removed from the sheet or panel. A hole is formed between the material 4 and the backing member 5, which is a place where the material can penetrate. The empty cavity defined by the flute 10 is You can fall freely in between.

In summary, a heat transfer metal thin film can be applied to a drilling tool by absorbing heat. It only theoretically enhances the cooling effect of the heat transfer metal thin film. stile, which in itself increases the wear of the drilling tool, which is a significant disadvantage, and therefore increases the It has been discovered that the heating of the machining tool is also increased by the housing. This invention is The contact between the tip of the drilling tool and the heat extraction metal is cooled to the desired low level of 7C. The theory is that thin aluminum membranes should wear out very little. In addition to rejecting the theory that it will not occur, it is possible to Prove that a corrugated board produced by φ gives excellent results in all respects. do· If the corrugated board is a paper product, the chips and fibers will loosen and contaminate the printed wiring board. Or one would believe that it would completely damage it. Even if the explanation is given with reference to Figure 2, Even if the effect of a dust ejector that can be removed is created, 9 out of 10 require drilling. The tool dented the edge of the drilled hole, damaging the printed wiring board, and The fibers loosened by the extraction of the drilling tool are pulled out into the drilled hole. Believe it or not, it will stick to the hole. A normal corrugated board) Kinel is , furthermore, an unstable support that allows full movement of one surface relative to the other. This makes the material useful as a backing material for drilling. Make it disappear. Extremely rapid and accurate hole drilling during printed circuit board drilling Curving is used to create a fixed backing, such as a backing member that does not move laterally and does not bend. This process is very similar to the punching process that actually requires parts. On the other hand, Corrugated board is an inexpensive component manufactured to a certain quality and appropriate thickness, and as described above. A plurality of fluted conduits of sufficient size to provide air cooling and drainage of dust 9 It is equipped with

According to this invention, a regular product of constant quality can be obtained by a relatively simple and relatively inexpensive process. The corrugated plate can be fully strengthened and improved, and the longitudinal grooves are formed of a thin metal film. A perforated backing that is superior to the surface of a thin metal film sandwiching the layers. members can be provided. This is done by reinforcing the corrugated board with synthetic resin. It is possible to achieve this. Provides the desired strength and stability, especially for corrugated boards. A phenolic resin is provided to provide this. Furthermore, this type of synthetic resin is It has the property of creating a relatively brittle covering layer or surface, making it difficult to drill holes. Provides holes with clean, sharp contours that can be easily drilled with a tool can do. Phenolic resins can be easily applied to surfaces by spraying or irrigation. It can be applied without breaking the adhesive connection of the corrugated board. By applying white synthetic resin, the ridges of the vertical grooves can be removed without blocking the vertical groove conduits. can be easily strengthened. Corrugated board after phenolic resin is applied Depending on the basis weight of the resin and the amount of synthetic resin applied, for example about 40 minutes or about At 170° C. or higher, the base member is cured in an oven.

As a base material for the perforated backing member according to the invention, the thickness is small. and preferably between 1.5 and 3n, and a longitudinal groove is formed. The basic xi of both the layer and the surface before being impregnated with the phenolic resin is about 15017. The gap between m2 and 280 g/m2 is made of corrugated board of a certain quality. is preferable.

As an example of the degree of impregnation, a corrugated board with a thickness of 21111 will yield optimal results. In order to receive impregnation on both sides, a synthetic resin containing a hardening agent was applied to the m2 is required. The cost for manufacturing the backing member according to this invention is as described above. As shown, the backing member impregnated and treated according to the present invention was about 10 er s (krone) /, compared to the cost of n2, two sheets of metal The surface of the steel plate is made up of a thin sheet of metal fly with longitudinal grooves formed on it. The manufacturing cost of the perforated backing member that has been used since then is approximately 100 arm/m. 2, it costs only about 10% of the cost to produce a conventional perforated backing member. This is Section 25. Furthermore, the backing member according to the invention is It is an improvement in all respects, and to the best of our knowledge, it is an improvement in all respects. It does not cause any disadvantages. In particular, the backing member according to the invention can be used with a drilling tool. The surface of the paper or covering layer after impregnation is hard and more friable and easily penetrated by the tip of a drilling tool This provides a clean hole with no burrs during drilling. treated synthetic resin The material never becomes soft and the amount of work required for penetration work is reduced. Since the prevailing temperature can be kept relatively low, the tendency to stick can be eliminated. This can reduce wear on the drilling tool and extend its life.

The above description was about printed wiring circuits and circuit boards, but it goes without saying that , a perforated backing board according to the present invention is suitable for perforating a board with a printed wiring circuit. Other objects that encounter similar problems to those encountered in connection with machining, especially drilling It is also useful when it is important to keep the temperature of the processing tool relatively low. This issue According to the specification, other synthetic resin impregnating agents other than phenolic resin, such as epoxy resin, You can also get good results. However, other synthetic resin impregnation agents Phenol resins are preferred because they are relatively inexpensive compared to. same reason Accordingly, commercially available corrugated plates are preferable.

Procedural amendment Showa year/month/3rd Director of the Patent Office 1 Kazuo Wakasugi 1.Display of the incident PCT/8E82100081 , a famous tree of invention.

Agricultural parts for drilling holes 3. Person who makes corrections Relationship to the incident: Patent applicant Name: B-R Knee Fist Chemisk Fist Flasning 4, Agent Address 1-26-5 Toranomon, Minato-ku, Tokyo 17th Mori Building Name (5847) Patent attorney Suzue Takehiko 5, date of Fukusho order December 21, 1981 6. Subject of compensation Translation of the application, translation of the specification and scope of claims, corporation certificate

Claims (1)

[Claims] 1. Drilling holes in a panel-shaped or other flat member made from a single laminate. When drilling with a tool, it is connected to the workbench (1) or similar Supports panel-shaped or other planar members; 12 layers of paper formed with at least one paper surface and fluted and secured to said surface; It consists of panels of corrugated board with In order to strengthen the corrugated board panels, a hardening synthetic resin that hardens after impregnation is used. A panel-shaped backing member characterized by being impregnated with water. 2. A claim characterized in that the synthetic resin composition is a phenol synthetic resin composition. A perforated backing member as claimed in claim 1. 3. The corrugated board has a thickness of between 4m and 4m prior to impregnation, Paper with a basis weight of 15017 m2 to 2801 m2 as a surface or covering layer. The paper layer used and in which the longitudinal grooves are formed preferably has a weight of 150 g/m2 to 28 g/m2. Claim 1 or 2, characterized in that it is made of paper with a basis weight of 0 vm. The perforated backing member claimed in Clause. 4. Outside one surface (ZJ), an additional surface (13) is fixed and stiffened. A perforated backing member as claimed in claim 1. 5.Specifying that the additional surface (13) also consists of paper impregnated with synthetic resin. A perforated backing member as claimed in claim 4. Engraving (no changes to the content)