JP5366252B2 - Manufacturing method of holding jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a holding fixture in which the holding fixture including an elastic member having holding holes having a single axis is manufactured with high productivity. <P>SOLUTION: The method of manufacturing the holding fixture 1 including a reinforcing member 5 having support holes 11 piercing along a thickness and an elastic member 6 having holding holes 15 piercing along the thickness such that the reinforcing member 5 is embedded in the elastic member 6 so that the holding holes 15 pass through an inside of the support holes 11 includes a process of forming a closed-end hole 17 in an elastic body 7, molded so as to embed the reinforcing member 5, until it passes at least through a support hole 11 along an axis C of the support hole 11; and process of forming the holding holes 15 by removing the elastic body 7 until the closed-end hole 17 is pierced. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a method for manufacturing a holding jig, and more particularly, a holding jig capable of manufacturing a holding jig including an elastic member having a holding hole having a single axis with high productivity. It relates to the manufacturing method.

  Integrated circuits and the like used in electronic devices such as computers, telephones, game machines, and automobile electrical devices are equipped with small components such as a multilayer ceramic chip capacitor (sometimes simply referred to as a chip capacitor). . When manufacturing such a small component, a holding jig in which a holding hole for holding a small component member or the like capable of manufacturing a small component is usually used. As such a holding jig, for example, Patent Document 1 discloses that “(a) a plate body having a large number of parallel through passages is provided. (B) The passage has an elastic wall and has a small electrical part. Can be positioned in the passage, and the dimension of the passage is smaller than the dimension of the corresponding part, and the part is elastically gripped at the position in the passage. A large number of electrical device for coating the ends of small electrical parts ”.

  Such a holding jig is manufactured by, for example, a method using a molding die in which pins corresponding to the holding holes are erected, a method of drilling a holding hole using a drill or the like in a molded elastic body, and the like. .

  As a method for drilling a holding hole using a drill or the like, for example, in Patent Document 2, “a rubber layer formed in the thickness direction of a metal rectangular plate body is cut with a drill to form a large number of through holes. In the method of manufacturing a carrier plate, in the step of cutting the through hole with a drill, first cut from one side to about half the depth in the thickness direction, then reverse the plate body and cut from the opposite side in the same way. A carrier plate manufacturing method characterized by forming through-holes "(Claim 1), and" a large number of through-holes by cutting a rubber layer formed in the thickness direction of a metal rectangular plate body with a drill. " A method of manufacturing a carrier plate for forming a hole, wherein in the step of cutting the through hole with a drill, first, cutting is performed from one side in the thickness direction to a depth where the ratio with the diameter of the through hole is within 6, The A carrier plate manufacturing method, characterized in that the rate body is inverted and cut in the same manner from the opposite side, and then the remaining portion is cut with a slightly smaller diameter drill than the first drill to form a through hole. Item 3) is described.

  By the way, the method described in Patent Document 2, in particular, inverts the plate body and requires at least two cuttings, so that the number of manufacturing steps is increased, and the cutting is performed in each cutting and one penetration is made. In some cases, the axes of the two holes constituting the hole do not coincide with each other, and one axis passing through the through hole does not exist. In particular, in a small-diameter through hole, even if the dimensional accuracy of the opening is excellent, there is a concern that the ratio of forming a through hole having a plurality of axes without an axis representing the whole is increased.

Japanese Examined Patent Publication No. 62-20585 JP 2009-39850 A

  It is an object of the present invention to provide a method for manufacturing a holding jig capable of manufacturing a holding jig including an elastic member having a holding hole having a single axis with high productivity. .

As means for solving the problems,
According to a first aspect of the present invention, a reinforcing member having a support hole and an elastic member having a holding hole for elastically holding a small component inserted therein are provided, and the holding hole is formed inside the support hole. A method of manufacturing a holding jig in which the reinforcing member is embedded in the elastic member so as to pass through, and has a bottomed surface from one surface of the elastic body formed so as to embed the reinforcing member to the other surface. forming the elastic body to pass through at least the support hole along a hole in the axis of the support hole, the entire other surface of the elastic body the bottomed hole by the thickness of the to penetrate And a step of forming the holding hole by removing the holding jig,
The second aspect of the present invention is the method of manufacturing a holding jig according to claim 1, wherein the elastic body is formed to be thick enough to remove the other surface.
A third aspect of the present invention is the method of manufacturing a holding jig according to claim 1, wherein the bottomed hole is formed to a depth of 94 to 98% of the thickness of the elastic body.
Claim 4 is the manufacturing method of the holding jig according to any one of claims 1 to 3, wherein the bottomed hole is formed by drilling with a drill.
5. The method of manufacturing a holding jig according to claim 1, wherein the bottomed hole is formed so as to have an axis common to the axis of the support hole. It is.

  In this invention, a step of forming a bottomed hole in the elastic body in which the reinforcing member is embedded until it passes through the support hole, and a step of forming the holding hole by removing the elastic body until the bottomed hole passes through. Therefore, the bottomed hole formed from one surface of the elastic body has a single axis and is held in the above two steps without forming a bottomed hole from both surface sides of the elastic body. Holes can be formed. Therefore, according to the present invention, it is possible to provide a method for manufacturing a holding jig capable of manufacturing a holding jig including an elastic member in which a holding hole having a single axis is formed with high productivity. it can.

FIG. 1 is a schematic top view showing a holding jig which is an example of a holding jig manufactured by the method for manufacturing a holding jig according to the present invention. FIG. 2 is a schematic cross-sectional view showing a part of a cross section of the holding jig cut along line AA in FIG. FIG. 3 is a schematic top view showing a reinforcing member which is an example of a reinforcing member constituting a holding jig manufactured by the method for manufacturing a holding jig according to the present invention. FIG. 4 is an explanatory view for explaining a method for manufacturing a holding jig according to the present invention, and FIG. 4 (a) is an elasticity molded in a state in which a reinforcing member is embedded in the method for manufacturing a holding jig according to the present invention. FIG. 4B is a partial cross-sectional view showing an elastic body in which a bottomed hole is formed in the method for manufacturing a holding jig according to the present invention, and FIG. These are the fragmentary sectional views which show the cross section of the holding jig which the removal of an elastic body complete | finishes in the manufacturing method of the holding jig which concerns on this invention.

  The small component held by the holding jig manufactured by the holding jig manufacturing method according to the present invention is a small component that can be manufactured in a small component manufacturing process, a conveying process, etc. Examples of the component member include a small instrument member, a small machine element member, and a small electronic component member. In addition, since the manufacture of small parts includes a process of transporting small parts, the small parts include small parts themselves, for example, small appliances, small mechanical elements, and small electronic parts. Therefore, in the present invention, it is not necessary to clearly distinguish the small component from the small component member. As a small electronic component and a member for a small electronic component, for example, a finished product or an unfinished product such as a chip capacitor, an inductor chip, a resistor chip, etc., and / or, for example, a prism or cylinder, Examples thereof include a prismatic body or cylindrical body having ridges at one end, and a prismatic body or cylindrical body having heels at both ends.

  The holding jig manufactured by the manufacturing method of the holding jig according to the present invention includes a reinforcing member in which a support hole is formed and an elastic in which a holding hole for elastically holding a small part inserted therein is formed. A holding jig in which the reinforcing member is embedded in the elastic member so that the holding hole passes through the inside of the support hole.

  Examples of such holding jigs include the “coating apparatus” described in Patent Document 1, the “carrier plate” described in Patent Document 2, the holding jig shown in FIGS. .

  As an example of the holding jig, the holding jig 1 shown in FIGS. As shown in FIGS. 1 and 2, the holding jig 1 includes a reinforcing member 5 in which a support hole 11 is formed and an elastic member 6 in which a holding hole 15 is formed, and the holding hole 15 supports the holding jig 1. A part of the reinforcing member 5 is embedded in the elastic member 6 so as to pass through the inside of the hole 11. The holding jig 1 can elastically hold the small component inserted into the holding hole 15 by the elastic force of the elastic member 6.

  As shown well in FIG. 2, the reinforcing member 5 includes the elastic member 6 so that the flat portion 12 in which the support hole 11 is formed is embedded in at least the elastic member 6 described later, and the elastic member 6 becomes flat. Support reinforcement. As shown in FIGS. 2 and 3, the reinforcing member 5 includes a rectangular flat portion 12 in which a large number of support holes 11 are formed, and a thickness direction, that is, an upper surface of the flat portion 12 around the flat portion 12. And a flange 13 protruding in the direction and the bottom surface direction. The flange portion 13 can also be referred to as a flange portion.

  The flange portion 13 is formed so as to surround the flat portion 12, and as shown in FIG. 2, the protrusion amount in the upper surface direction and the lower surface direction of the flat portion 12 is adjusted to be constant. In other words, as shown clearly in FIG. 3, the flange portion 13 forms a rectangular frame surrounding the flat portion 12, and the flat portion 12 is thinner than the flange portion 13 at a substantially central portion in the thickness direction. It is connected. The flange portion 13 reinforces the strength of the flat portion 12 and ensures excellent handleability when the holding jig 1 is used.

  As shown in FIGS. 2 and 3, the flat portion 12 is a region where the support hole 11 penetrating in the thickness direction is formed, and has a certain thickness. The thickness of the flat part 12 is set within a range of 5.9 to 7.0 mm, for example.

  A large number of the support holes 11, for example, about 100 or more, preferably at least about 3000, more preferably at least about 5000, penetrate through the flat portion 12 in the thickness direction of the flat portion 12. (A part of the support hole 11 is not shown in FIG. 3). When a large number of support holes 11 are formed in the reinforcing member 5, productivity when manufacturing small parts using the holding jig 1 is improved.

  The plurality of support holes 11 are aligned along a first alignment direction and a second alignment direction that intersects the first alignment direction substantially perpendicularly. In this example, the support hole 11 has a first alignment direction substantially parallel to the vertical direction of the flat portion 12 and a second alignment direction substantially parallel to the horizontal direction of the flat portion 12 and perpendicularly intersecting the first alignment direction. Along the horizontal direction, that is, along the vertical and horizontal directions, a perforated pattern is formed at predetermined intervals. In this example, the interval between the adjacent support holes 11 along the first alignment direction and the second alignment direction is adjusted to the same interval. The spacing between the support holes 11 is the distance between the axes of the support holes 11 adjacent to each other in the direction, and is appropriately adjusted according to the number of support holes 11 to be formed, the dimensions of the small parts to be held, and the like.

  The shape of the opening in the support hole 11 opening on the surface of the flat part 12 and the cross-sectional shape when the support hole 11 is cut in a horizontal plane parallel to the flat part 12 are not particularly limited, and are, for example, circular or elliptical. A shape such as a rectangle or a polygon can be arbitrarily selected. The shape of the opening and the cross-sectional shape are preferably the same. In this example, the shape of the opening and the cross-sectional shape are the same circle and have the same diameter. The diameter of the support hole 11 is appropriately adjusted according to the number of support holes 11 to be formed, the size of small parts to be held, and the like.

  In the reinforcing member 5, the dimensions of the flange 13 and the flat part 12 are adjusted in consideration of the productivity of small parts, the dimensions of the small parts, the strength of the holding jig 1, and the like.

  As shown in FIGS. 1 and 2, the elastic member 6 has a plurality of holding holes 15, and has a gap that can accommodate the flat portion 12 therein. As shown in FIG. 2, the elastic member 6 embeds the flat portion 12 of the reinforcing member 5. In other words, the elastic member 6 covers both surfaces of the flat portion 12 and penetrates into the support holes 11 of the reinforcing member 5 to reinforce. It is formed so as to be flush with the flange 13 of the member 5. That is, the elastic member 6 is disposed on the surface of the flat portion 12 and is surrounded by the flange portion 13 of the reinforcing member 5. In this way, the elastic member 6 has two plate-like molded bodies disposed on both surfaces of the reinforcing member 5 integrally with each other through the columnar body partly penetrating into the support hole 11 of the reinforcing member 5. It is made up. Furthermore, the elastic member 6 includes a first plate-like molded body that covers one surface of the flat portion 12, a second plate-shaped molded body that covers the other surface of the flat portion 12, and a first plate-like shape. A columnar body that connects the molded body and the second plate-shaped molded body, and the columnar body has the same dimensions as the dimensions of the support hole 11. Here, the elastic member 6 has a flat portion 12 embedded so that the holding hole 15 passes through the inside of the support hole 11. As shown in FIG. 2, the elastic member 6 preferably has one axis C through which the holding hole 15 passes, and particularly preferably, the axis C coincides with the axis C of the support hole 11. The reinforcing member 5, particularly the flat portion 12 is embedded. When the elastic member 6 is formed in this manner, the adhesiveness between the elastic member 6 and the reinforcing member 5 is excellent, and insertion and extraction of small parts is facilitated.

  As shown in FIGS. 1 and 2, a large number of the elastic members 6, for example, about 100 or more, preferably at least about 3000, more preferably at least about 5000, penetrate in the thickness direction of the elastic member 6. (A part of the holding hole 15 is not shown in FIG. 1). The holding hole 15 can elastically hold a small part inserted or penetrated into the holding hole 15 by its elastic force. When a large number of holding holes 15 are formed in the elastic member 6, productivity when manufacturing a small part using the holding jig 1 is improved.

  The plurality of holding holes 15 are basically the same as the support holes 11, and are substantially parallel to the first alignment direction substantially parallel to the vertical direction of the flat portion 12 and the horizontal direction of the flat portion 12 and perpendicular to the first alignment direction. Are drilled in a grid pattern at a predetermined interval along the second alignment direction intersecting with each other, that is, along the vertical and horizontal directions. In this example, the interval between the adjacent holding holes 15 along the first alignment direction and the second alignment direction is adjusted to the same interval, and usually coincides with the interval between the support holes 11. The interval between the holding holes 15 is the distance between the axes of the holding holes 15 adjacent to each other in the direction, and is appropriately adjusted according to the number of holding holes 15 to be formed, the dimensions of the small parts to be held, and the like.

  The shape of the opening in the holding hole 15 opening on the surface of the elastic member 6 and the cross-sectional shape when the holding hole 15 is cut in a horizontal plane parallel to the elastic member 6 are not particularly limited, but can be easily formed. The shape of the opening and the cross-sectional shape are preferably the same circle. In this example, the shape of the opening and the cross-sectional shape have the same diameter. The diameter of the holding hole 15 is appropriately adjusted according to the number of holding holes 15 to be formed, the size of the small parts to be held, and the like.

  The elastic member 6 preferably has a predetermined elongation, tensile strength, and hardness so as to be elastically deformed and not damaged when a small part is inserted and / or removed. For example, the elongation at break (tensile speed 500 mm / min) specified in JIS K6249 is preferably 200 to 1000%, particularly preferably 400 to 900%, and the tensile strength (tensile specified in JIS K6249). The speed (500 mm / min) is preferably 5 to 15 MPa, particularly preferably 7 to 14 MPa, and the hardness (JIS A) defined in JIS K6253 is preferably 20 to 80, and 40 to 60 Is particularly preferred. The No. 3 dumbbell-shaped test piece was prepared in an environment of 23 ° C. and 50% humidity as defined in the above JIS K6249. Set to 20 mm.

The elastic member 6 preferably has a tear strength of 5 to 50 kN / m ² and particularly preferably 30 to 50 kN / m ² . When the elastic member 6 has a tear strength within the above range, the elastic member 6 is not easily damaged even when the insertion and / or extraction operation of the small component is repeated, and a large number of small components are almost uniformly elastic. Can be held in. The tear strength is determined by a method specified in JIS K6252 using a “crescent test piece” made of the same material as the elastic member 6 or a “crescent test piece” cut out from the elastic member 6. Can be measured.

  Since the holding jig 1 is used in the manufacturing method of a small part, for example, the electrode forming process of the member for a small part, the surface of the elastic member 6 realizes the homogeneity of the product. It is preferably smooth so that the conductive paste or the like does not adhere. In order to make the surface of the elastic member 6 a mirror surface, a method of molding the elastic member 6 using a mold having a mirror surface on the inner surface, a method of polishing or grinding the surface after molding in accordance with a conventional method, etc. can be selected. That's fine.

  The elastic member 6 is usually adjusted in size and thickness so as to be flush with the flange 13 in consideration of the productivity of small parts, the size of the small parts and the elastic force exerted. The That is, the thickness of the elastic member 6 is adjusted to the same thickness as that of the holding jig 1 and is usually adjusted to 8.9 to 10 mm.

  The holding jig configured as described above is particularly suitable for holding the small parts, for example, and more suitable for holding small parts that need to be coated with conductive paste for electrode formation at least at two locations. It is.

  For example, the holding jig 1 elastically holds the small component by inserting it into the holding hole 15 in a state where the axis of the small component is substantially parallel to the axis of the holding hole 15, preferably in a state where they coincide. And the holding jig 1 holding the small parts is used for a manufacturing process, a conveying process, and the like of the small parts. In order to hold a small part in the holding jig 1, for example, an alignment plate in which the same number of through holes as the holding holes 15 are similarly arranged at the same intervals as the holding holes 15 is prepared. The alignment plate is overlaid on the holding jig 1 so as to match. Next, a small component is inserted into each of the through holes of the alignment plate, and the small component is uniformly pressed to the holding jig side with a flat plate-shaped member. Then, the small component is inserted into the holding hole 15 so as to be in the above state, and is held elastically.

  As an example of the method for manufacturing the holding jig according to the present invention, a manufacturing method for manufacturing the holding jig 1 (hereinafter sometimes referred to as one manufacturing method according to the present invention) will be described. In one manufacturing method according to the present invention, the bottomed hole 17 extending from one surface 7a of the elastic body 7 formed so as to embed the reinforcing member 5 to the other surface 7b is provided at least along the axis C of the support hole 11. Forming the elastic body 7 until it passes through the support hole 11, and removing the elastic body 7 on the other surface 7 b side until the bottomed hole 17 penetrates to form the holding hole 15. Features.

  In one manufacturing method according to the present invention, first, as shown in FIG. 4A, an elastic member 7 constituting the elastic member 6, that is, an elastic member in which the holding hole 15 is not formed is formed. In other words, a process of forming the elastic body 7 in which the reinforcing member 5 is embedded is performed. In order to perform this process, the elastic member and the molding die for forming the reinforcing member 5 and the elastic body 7 are prepared.

  The reinforcing member 5 is manufactured by, for example, forming the support hole 11 after preparing a plate-like body in which the support hole 11 is not formed. The plate-like body is produced, for example, by cutting out a plate-like body having the flat portion 12 and the flange portion 13 around it from a plate body having the same thickness as or thicker than the flange portion 13 to a desired dimension. Or the said plate-shaped body produces separately the flat part 12 and the collar part 13 in which the support hole 11 was formed, and the flat part 12 and the collar part 13 are made into desired positions by joining means, such as welding or adhesion | attachment. It is produced by bonding to A large number of support holes 11 having a predetermined shape are formed in the flat portion 12 of the plate-like body thus produced by cutting, grinding or wire cutting using a milling machine, a drilling machine, a wire cutting machine or the like. Drilling is performed so as to be aligned at predetermined intervals along the first alignment direction and the second alignment direction. An adhesive or a primer may be applied to the surface of the flat portion 12 in order to improve the close contact with the elastic member 6.

  The reinforcing member 5 only needs to be formed of a material that can maintain the elastic member 6 in a flat shape, and examples of such a material include metals and resins. Specific examples of the metal include stainless steel, carbon steel, aluminum, aluminum alloy, and nickel alloy. Examples of the resin include polyester, polytetrafluoroethylene, polyimide, polyphenylene sulfide, polyamide, polycarbonate, polystyrene, and polypropylene. , Polyethylene and polyvinyl chloride. The reinforcing member 5 is preferably formed of stainless steel, aluminum or an aluminum alloy, polyphenylene sulfide resin, or the like, and particularly preferably formed of aluminum or an aluminum alloy.

  The mold may be a mold that can mold the elastic body 7 so that at least the flat portion 12 of the reinforcing member 5 housed therein is embedded in the elastic body 7 to be molded. Examples thereof include a “molding die” shown in FIG. 2 of Kaikai 2006-344826. An example of the molding die will be described in more detail. A molding die used in one manufacturing method according to the present invention is composed of an upper molding die having a concave portion and a lower molding die having a concave portion, and the concave portions are mutually connected. When the upper molding die and the lower molding die are overlapped so as to face each other, the reinforcing member 5 can be accommodated by the recess formed in the upper molding die and the recess formed in the lower molding die. A molding die in which a housing recess is formed is exemplified. The inner surface of the recess in this molding die may be mirror-finished.

  The elastic material is formed of a material that can be elastically deformed to insert and hold a small component when the elastic member 6 is used. Examples of such a material include rubber and elastomer, and more specifically, silicone rubber. Among silicone rubbers, a silicone rubber obtained by crosslinking a linear polydimethylsiloxane having a high polymerization degree or a copolymer thereof to impart rubber elasticity, or an acid-resistant silicone rubber is preferable. As silicone rubber which bridge | crosslinked linear polydimethylsiloxane of high polymerization degree, a brand name "KE-1950-50" (made by Shin-Etsu Chemical Co., Ltd.) etc. can be obtained, for example.

  The reinforcing member 5 is housed in the housing recess of the molding die thus prepared, and the liquid material is filled into the cavity defined by the recess and the reinforcing member of the molding die to form the elastic body 7. Is molded. The method of filling and molding the elastic material is not particularly limited, and for example, a molding method such as compression molding, injection molding, transfer molding or the like can be employed. The molding temperature and molding time may be any temperature and time at which the elastic material to be used is cured, and can be arbitrarily adjusted according to the elastic material.

  In the molding process of the elastic body 7, the elastic body 7 to be molded is as much as the other surface 7b side is removed in the process described later, as shown by the broken lines in FIGS. 4 (a) and 4 (b). It is preferable to form it thick. In this case, as shown in FIG. 4A, the elastic body 7 is preferably integrally connected to the elastic member 6 in which the holding hole 15 is formed and the other surface 6b of the elastic member 6. And a region to be removed 7c. The said removal scheduled area | region is the other surface side area | region of the elastic body 7 removed by the process mentioned later. The area to be removed can be, for example, about 0.9 mm or less in thickness. When the thickness of the elastic body 7 is adjusted in this way, the elastic member 6 having a predetermined thickness can be formed even if the elastic body 7 is removed to form the holding hole 15.

  In this way, as shown in FIG. 4A, the elastic body 7 is formed in a state where the flat portion 12 of the reinforcing member 5 is embedded. Specifically, the elastic body 7 in which the flat portion 12 of the reinforcing member 5 is embedded and the holding hole 15 is not formed can be integrally formed with the reinforcing member 5.

  When a molding burr has occurred on the surface of the molded elastic body 7 or when the flatness of the elastic body 7 is improved, surface treatment such as grinding may be performed. For example, the surface treatment includes surface grinding, milling, lapping and the like. Further, the surface of the elastic body 7 can be mirror-finished. In addition, in order to ensure hardening of the elastic body 7 after shaping | molding of the elastic body 7, you may perform secondary heating or heat processing.

The elastic body 7 formed in this way preferably has the same elongation, tensile strength and hardness as the elastic member 6. The elastic body 7 preferably has a tear strength of 5 to 50 kN / m ² , particularly preferably 30 to 50 kN / m ² . When the elastic body 7 has a tear strength in the above range, a bottomed hole having a cross-sectional shape substantially the same as the cross-sectional shape perpendicular to the axis of the drilling tool can be drilled. The elongation, tensile strength, hardness and tear strength of the elastic body 7 can be measured basically in the same manner as the elastic member 6.

  In one manufacturing method according to the present invention, a bottomed hole 17 is then formed in the molded elastic body 7. That is, a step of forming the bottomed hole 17 from the one surface 7a of the elastic body 7 toward the other surface 7b in the elastic body 7 until it passes through at least the support hole 11 along the axis C of the support hole 11 is performed. . This step is performed using, for example, a milling machine, a drilling machine, an NC machining center, a drill machine, or the like that can form the bottomed hole 17. These apparatuses are equipped with a drill 8 capable of forming a bottomed hole 17, for example, a resin drill. The resin drill 8 has an outer diameter that is substantially the same as or slightly larger than the diameter of the holding hole 15 to be formed, for example, an outer diameter that is about 0.05 to 0.3 mm larger than the diameter of the holding hole 15. What is necessary is just a thing, The tip part shape etc. are not specifically limited. Here, in this invention, the outer diameter of the drill 8 usually refers to a mountain diameter.

  In this step, as shown in FIG. 4A, the drill 8 is arranged on the axis C of the support hole 11 of the reinforcing member 5 embedded in the elastic body 7. At this time, the axis of the drill 8 and the axis C of the support hole 11 coincide. The drill 8 is lowered along the axis C until it passes through the support hole 11 at least from one surface 7a of the elastic body 7 on the side where the drill 8 is disposed toward the other surface 7b. At this time, the drill 8 is lowered to a position of 94 to 98% of the thickness of the elastic body 7, while maintaining the high dimensional accuracy of the bottomed hole 17, that is, the holding hole 15, and the elasticity of the other surface 7 b side. It is preferable in that the holding hole 15 can be formed only by removing a small amount of the body 7. In this example, it is particularly preferable that the drill 8 is lowered to the vicinity of the other surface 7b, in other words, to a region to be removed indicated by a broken line in FIGS. 4 (a) and 4 (b). The descending amount of the drill 8 is preferably set to 94 to 98% of the thickness of the elastic body 7, but considering an error due to deformation of the elastic body 7, it is slightly deeper than the above range, for example, about 1%. That is, it may be set at a position of 95 to 99% of the thickness of the elastic body 7.

  When drilling is performed with a drill in this manner, as shown in FIG. 4 (b), the opening 17a opened on one surface 7a of the elastic body 7 and at least the support hole 11 and the other surface 7b side. A bottomed hole 17 having a bottom portion 17b positioned and sharing an axis with the support hole 11 is formed. The bottom portion 17b of the bottomed hole 17 is preferably at a depth of 94 to 98% with respect to the thickness of the elastic body 7, and particularly in the vicinity of the other surface 7b, in other words, in the region to be removed. preferable. In the case of the elastic member 6 having the thickness, for example, the bottomed hole 17 preferably has a bottom portion 17b at a depth shallower by 0.2 to 0.9 mm than the thickness of the elastic member 7. .

  The descending amount of the drill 8, that is, the depth of the bottom 17b of the bottomed hole 17, is at least an amount exceeding the support hole 11 or a depth exceeding the support hole 11, as shown in FIG. . When the amount of descent of the drill 8 is in such an amount, the workability is excellent without significantly removing the elastic body 7. When the amount of descent of the drill 8, that is, the depth of the bottom portion 17 b of the bottomed hole 17, is preferably at a position or depth of 94 to 98% of the thickness of the elastic body 7, the removal planned region is particularly preferable. If it is in the inner position or depth, the removal amount of the elastic body 7 on the other surface 7b side can be greatly reduced without impairing the high uniformity of the diameter of the bottomed hole 17 to be formed. The boundary value 94% of the numerical range is a value determined in consideration of the removal amount and workability of the elastic body 7, and the position or depth where the descending amount of the drill 8 exceeds the support hole 11. If it is less than 94%, the object of the present invention can be achieved. Further, the descending amount of the drill 8, that is, the depth of the bottom portion 17b of the bottomed hole 17, does not depend on the shape of the tip portion of the drill to be used, but from the one surface 7a of the elastic body 7 to the tip of the drill tip portion. That is, the distance to the deepest portion of the bottom portion 17 b in the bottomed hole 17.

  In this step, when the drill is rotated at a rotational speed of 5000 to 60000 rpm, for example, the bottomed hole 17 having a uniform diameter can be formed.

  In the manufacturing method according to the present invention, when the elastic body 7 on the other surface 7b side and the removal intended region 7c are formed, until the bottomed hole 17 passes through the planned removal region 7c. Remove. The removal of the elastic body 7 can be performed by, for example, a polishing machine, a milling machine, a drilling machine, a wire cutting machine, a polishing process using an NC machining center, a cutting process, a grinding process, or a wire cut. For example, when a polishing machine is used, the removal scheduled region 7c can be removed under the conditions of a peripheral speed of the grindstone of 20 to 30 mm / s and a cutting depth of 10 to 20 μm.

  When the elastic body 7 on the other surface 7b side is thus removed until it reaches the bottom portion 17b of the bottomed hole 17, the bottomed hole 17 becomes a part of the elastic body 7, as shown in FIG. Is formed on the other surface 6b of the elastic member 6 from which the elastic member 6 is removed, and the elastic member 6 is penetrated in the thickness direction, and a holding hole 15 having a single axis C is formed. At this time, even if the elastic body 7 is inverted to remove the other surface 7b side of the elastic body 7, the axis of the holding hole 15 to be formed remains unchanged.

  In this way, the holding jig 1 is manufactured.

  According to the manufacturing method of the present invention, the step of forming the bottomed hole 17 in the elastic body 7 in which the reinforcing member 5 is embedded until the bottomed hole 17 passes through the step of forming the bottomed hole 17 until it passes through the support hole 11. Removing the holding holes 15 to form the holding holes 15, it is not necessary to reverse the elastic body 7 to form two holes separately from both surfaces of the elastic body 7. Therefore, according to one manufacturing method according to the present invention, the bottomed hole 17 formed from one surface 7a of the elastic body 7 has a single axis C, and the holding hole 15 is formed in the two steps. be able to. Therefore, according to one manufacturing method according to the present invention, the holding jig 1 including the elastic member 6 in which the holding hole 15 having the single axis C is formed can be manufactured with high productivity. It can be manufactured in a smaller number of steps and in a shorter time than conventional manufacturing methods.

  The manufacturing method of the holding jig according to the present invention is not limited to the above-described embodiment, and various modifications can be made within a range in which the object of the present invention can be achieved.

  For example, in the process of forming the bottomed holes 17 in the elastic body 7, the number of the bottomed holes 17 formed by one operation is not particularly limited, and even if one bottomed hole is formed one by one, it is shown in FIG. The number of drills that can be mounted on the apparatus to be used can be adjusted as appropriate.

  In the manufacturing method according to the present invention described above, the other surface 7b side of the elastic body 7 is formed thick enough to be removed by polishing, and the elastic body 7 on the surface 7b side is polished and removed. In the method, the other surface side of the elastic body can be removed without forming the elastic body thick enough to polish and remove, and the flange portion of the reinforcing member can also be ground and removed together with the elastic body. In this case, the collar portion to be polished and removed does not have to be formed thick enough to be polished and removed, and similarly to the elastic body, the collar portion may be formed thick enough to be polished and removed. Good.

  The holding jig manufactured by the manufacturing method of the holding jig according to the present invention is not limited to the holding jig 1 described above. For example, the holding jig 1 holds the support holes 11 along the first alignment direction and the second alignment direction so that the intervals between the support holes 11 are set to the same interval, and the holding jig 1 is held along the first alignment direction and the second alignment direction. Although the interval between the holes 15 is set to be the same interval, in the present invention, the interval between the support holes along the first alignment direction and the second alignment direction may be set to different intervals, and the first alignment direction. And the interval of the holding holes along the second alignment direction may be set to a different interval.

  In the holding jig 1, the support holes 11 of the reinforcing member 5 and the holding holes 15 of the elastic member 6 are both arranged in a grid pattern along the first alignment direction and the second alignment direction. The through-holes and holding holes are, for example, a honeycomb arrangement in which regular hexagons are arranged in a close-packed manner, a square arrangement rotated 45 degrees vertically and horizontally, an array of radial shapes radiating from one point, and a radial curve shape Perforation may be performed according to an array, a concentric circular array, a spiral array that is spiral from one point, or the like.

  In the holding jig 1, as shown in FIG. 3, the reinforcing member 5 has a flange portion 13 formed around the flat portion 12. In this invention, the flange portion is formed around the flat portion. It does not need to be formed and may not be formed or may be formed on at least one side of the flat portion. Furthermore, in the holding jig 1, the reinforcing member 5 has a flange portion 13 in which the protruding amount in the upper surface direction and the lower surface direction of the flat portion 12 is constant. In this invention, the reinforcing member is a flat portion. You may have a collar part from which the protrusion amount in an upper surface direction and a lower surface direction differs.

  In the holding jig 1, as shown in FIGS. 1 to 3, the support hole 11 is drilled in the same opening shape as the opening of the holding hole 15, but in this invention, the support hole is You may perforate in the opening shape different from the opening part of a holding hole.

Example 1
An aluminum plate having a thickness of 8.9 mm is cut into a length of 180 mm × width of 270 mm, and a rectangular area of length 150 mm × width 225 mm is cut from both surfaces to a depth of 1.5 mm, and a flat portion having a flange 13 around 12 was formed. The flat support portion 11 was drilled with support holes 11 having a circular cross-section having a diameter of 1.6 mm in a state of being arranged in 71 rows and 108 rows in the vertical and horizontal directions at intervals of 2.03 mm. . In this way, the reinforcing member 5 shown in FIG. 3 was produced.

  Subsequently, the reinforcing member 5 coated with a primer (Primer No. 4, manufactured by Shin-Etsu Chemical Co., Ltd.) is accommodated in a molding die having an accommodating recess capable of accommodating the reinforcing member 5, and the molding die and the reinforcing member are accommodated. 5 was filled with silicone rubber (manufactured by Shin-Etsu Chemical Co., Ltd., trade name “KE-1950-50”). In this state, the entire molding die was heated at 180 ° C. for 5 minutes, and the reinforcing member 5 and the silicone rubber were integrally molded to obtain the elastic body 7 shown in FIG. The other surface 7b side of the elastic body 7 was made approximately 0.8 mm thicker than the one surface 7a side, thereby forming a removal planned region 7c that was approximately 0.8 mm higher than the surface of the flange 13.

The rubber test pieces described in JIS K6249 and JIS K6253 were respectively prepared by similarly molding the silicone rubber forming the elastic body 7 as the elongation, tensile strength, and JIS A hardness of the elastic body 7 when cut. In accordance with the measurement method, the elongation at break, tensile strength and JIS A hardness of the rubber specimen were measured. In addition, as the tear strength of the elastic body 7, a crescent type test piece is prepared using the silicone rubber forming the elastic body 7, and the tear strength of the test piece is determined in accordance with the method specified in JIS K6252. It measured on the said conditions. As a result, the elongation at break, tensile strength, JIS A hardness and tear strength of the elastic body 7 were 600%, 8.8 MPa, 49 and 40 kN / m ² , respectively.

  Next, a resin drill 8 having an outer diameter of 0.6 mm is set on the rotary shaft of the drill machine (manufactured by FANUC CORPORATION), and the axis of the resin drill 8 is arranged on the axis C of the support hole 11. As described above, the elastic body 7 was set. Next, while rotating the resin drill 8 at 20000 rpm, the depth of the bottom portion 17b of the bottomed hole 17 formed toward the elastic body 7 is 9.5 mm (98% of the thickness of the elastic body 7). The bottomed hole 17 was formed by descending along the axis C until The bottom portion of the bottomed hole 17 was located on the other surface 7b side with respect to the flange portion 13.

  Next, a surface grinder polishing machine (manufactured by Okamoto Machine Tool Co., Ltd.) is prepared, and a grindstone # 40 (Noritake Co., Ltd.) is used, and the grinding wheel has a peripheral speed of 25 m / s and a cutting depth of 20 μm. A holding hole 15 was formed by polishing and removing the planned removal area 7c (8.2% of the thickness of the elastic body 7) which is about 0.8 mm thick on the other surface 7b side of the elastic body 7.

  In this way, the same number of holding holes 15 as the support holes 11 were formed so as to be coaxial with the support holes 11 to manufacture a holding jig.

(Examples 2 and 3)
Basically the same as Example 1 except that the depth of the bottom portion 17b is changed to 9.2 mm (95% of the thickness of the elastic body 7) or 9.3 mm (96% of the thickness of the elastic body 7). Similarly, a holding jig was manufactured.

(Examples 4 and 5)
Instead of the resin drill 8, a resin drill having an outer diameter 0.7 mm larger than the resin drill 8 or a resin drill having an outer diameter 0.5 mm smaller than the resin drill 8 was used. A holding jig was manufactured basically in the same manner as in Example 1 except that.

(Example 6)
The holding jig is basically the same as in Example 1 except that the interval between the support holes 11 is changed to 2.28 mm and the support holes 11 are drilled in a state of being aligned in 63 rows and 96 rows. Manufactured.
(Example 7)
The elastic body 7 is molded to have the same thickness as the thickness 8.9 mm of the flange 13, and the depth of the bottom 17 b of the bottomed hole 17 is 8.7 mm (98% of the thickness of the elastic body 7 ), And the polishing removal amount of the elastic body 7 on the other surface 7b side is changed to 0.5 mm, and the flange 13 together with the elastic body 7 is removed by 0.5 mm. A holding jig was manufactured basically in the same manner as in Example 1 except that. In this holding jig, the protrusion 13 has a protrusion amount of 1.5 mm in the upper surface direction of the flat portion 12 and a protrusion amount in the lower surface direction, that is, the other surface 7b side of 1.0 mm. .

(Comparative Example 1)
The resin drill 8 is penetrated and held from one surface 7a to the other surface 7b of the elastic body 7 formed so as to have the same thickness as the flange 13 of the reinforcing member 5 as in the first embodiment. A hole 15 was formed to prepare a holding jig.

(Evaluation of holding hole)
Arbitrarily select ten holding holes 15 in each manufactured holding jig, measure the opening diameter (arithmetic average value) at the openings of the holding holes 15 opened on both surfaces of the elastic member 6, and confirm the shape did. As a result, each of the holding holes 15 in the holding jigs of Examples 1 to 7 had the same opening diameter on both surfaces, and the opening shape was also circular. On the other hand, in the holding hole 15 in the holding jig of Comparative Example 1, a part of the elastic member 6 near the opening opened on the other surface 7b of the elastic body 7 is missing, and the entire opening is on the surface. In addition, the opening diameter was small.

  Further, the axis C in the selected holding hole 15 was measured by measuring the XY coordinates of the centers of arbitrary 30 holding holes 15 on the front surface and the back surface. When the axis C of the holding hole 15 was confirmed by a CNC image measuring device “NEXIV (Nikon Corporation)”, most of the holding holes 15 in the holding jigs of Examples 1 to 7 had a single axis C. It was.

DESCRIPTION OF SYMBOLS 1 Holding jig 5 Reinforcement member 6 Elastic member 6b The other surface 7 The elastic body 7a The one surface 7b The other surface 7c The area 7c to be removed
8 Drill 11 Support hole 12 Flat part 13 Gutter part 15 Holding hole 17 Bottomed hole 17a Opening part 17b Bottom part C Axis line

Claims (5)

A reinforcing member formed with a support hole and an elastic member formed with a holding hole for elastically holding a small component inserted in the supporting hole, and the holding hole passes through the inside of the support hole. A method of manufacturing a holding jig in which a reinforcing member is embedded in the elastic member,
A bottomed hole from one surface of the elastic body shaped so as to embed the reinforcing member to the other surface is formed in the elastic body until it passes through at least the support hole along the axis of the support hole. And a process of
And a step of forming the holding hole by removing the entire other surface of the elastic body by a thickness until the bottomed hole passes therethrough.   The method for manufacturing a holding jig according to claim 1, wherein the elastic body is formed to be thick enough to remove the other surface side.   The method for manufacturing a holding jig according to claim 1, wherein the bottomed hole is formed to a depth of 94 to 98% of a thickness of the elastic body.   The said bottomed hole is formed by the drilling process by a drill, The manufacturing method of the holding jig of any one of Claims 1-3 characterized by the above-mentioned.   The said bottomed hole is formed so that it may have an axis common to the axis of the said support hole, The manufacturing method of the holding jig of any one of Claims 1-4 characterized by the above-mentioned.

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