JPS60242016A - Manufacture of receiving piece of jig - Google Patents

Abstract

PURPOSE:To obtain the title receiving piece excellent in abrasion resistance or the like, by a method wherein hard members such as steel balls are placed on the surface of a basic model, the model is opposed to a main body of a receiving piece with a predetermined gap therebetween, a resin is fed into the gap, is hardened and simultaneously bonded to the main body. CONSTITUTION:The basic model 2 is set on a surface plate 1, and a mold release layer 4 such as a sheet of wax is provided on the surface of the model 2. The steel balls 5 are uniformly located on and adhered to the layer 4, then a gelcoat layer 6 of a gelled resin is provided, and a glass-reinforced resin 7a is laminated thereon to provide a reinforcing layer 7. A closed space R is formed on the layer 7 by the main body 8 of the receiving piece having connecting holes 9, the model 2 and a fence board 3, and a molten resin is poured into the space R. After the resin is hardened, the hardened resin body is released from the model 2, thereby obtaining the receiving piece 18 having a receiving surface 18a faithful to a component part in shape.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a method for manufacturing a receiving piece for a component positioning jig.

Prior art and its problems When assembling or inspecting car body components, especially press-formed panel parts,
It is necessary to position the panel component using a jig receiving piece that is faithful to the shape of the panel component. The present applicant has proposed a method for manufacturing a receiving piece for this shogi jig, as disclosed in Japanese Patent Laid-Open Publication No. 5.8-205719.

According to Japanese Unexamined Patent Publication No. 58-205719, a predetermined part or a reference model of the part and a receiving piece body are arranged facing each other with a certain gap between them, and a large number of metal pieces are mixed in the gap between the two. Filling with a molten synthetic resin, or filling the metal pieces and molten synthetic resin separately in that order and curing them, and forming a receiving surface corresponding to the shape of the part on the receiving piece main body side. This is its characteristic.

However, according to Japanese Patent Application Laid-Open No. 58-205719, since the casting method is the basic method, metal pieces that should exhibit wear resistance exist in a suspended state in the resin, and therefore wear resistance is not necessarily required. It's hard to say that I'm concentrating on one area. More specifically, according to the above-mentioned conventional method, while the resin is cured and left to stand still after being filled, the metal pieces tend to move away from the resin surface layer due to their gravity, which reduces the durability of the most important resin surface layer. In terms of abrasion resistance, it is still not necessarily sufficient.

It is also possible to suppress the above defects by increasing the mixing ratio of metal pieces to the resin, but in that case, the toughness will be extremely reduced and it will not be practical, and pinholes will occur. is likely to occur.

Purpose of the Invention The purpose of the present invention is to provide a method that can satisfy both wear resistance and toughness in the resin surface layer, on the premise that a hard member such as a metal piece is interposed as a means for imparting wear resistance. It is possible to provide the following.

Structure of the Invention According to the method of the present invention, a step of arranging a large number of hard members such as steel balls on the surface of a reference model.

A process of arranging the receiving piece body opposite to the surface of the reference model on which the hard member is placed with a predetermined gap therebetween, and filling the gap between the reference model and the receiving piece body with molten resin and hardening it. At the same time, the method includes a step of bonding the resin layer to the receiving piece body. In this case, it is desirable to add glass fiber, carbon fiber, aluminum powder, etc. to the resin layer.

According to this method, the hard member is concentrated in the area where wear resistance is most required, that is, the resin surface layer.
It has excellent wear resistance and toughness, and does not generate pinholes.

Embodiment FIGS. 1(A) to rQ) are process explanatory diagrams showing a more specific embodiment of the present invention.

First, as shown in FIG. 1(A), a reference model 2, which is a prototype of a part to be positioned, is set on a surface plate 1 at 5. The part itself may be used as this reference model 2. Then, as shown in Figure (B)K, a fence pode 3 to prevent the resin from flowing out, which will be described later, is fixed to the side surface of the surface plate 1, and a mold release agent is applied to the surface of the reference model 2. Paste sheet wax on top of it. The pretreatment j- with these mold release agents, sheet wax, and K is designated by the reference numeral 4.

Next, as shown in FIG.
Glue and place evenly. In this case, the steel ball 5 described above or a bar with a circular cross section may be used as the hard member.

Next, as shown in FIG. 6(D), a gel-like resin is coated on the adhesively arranged steel balls 5 by a hand lay-up method to form a gel coat layer 6, and a glass layer is coated on the gel coat layer 6. The reinforcing layer 7 is formed by laminating reinforcing materials 7a in which fibers or carbon fibers are impregnated with resin.

Next, as shown in FIG. A space R is formed. In this case, the receiving piece main body 8 side is pre-processed to a shape close to the standard model shape, and at the same time a bonding hole 9 is formed to increase bonding strength with a resin layer 10, which will be described later.

Next, as shown in FIG. CF), the closed space R is filled with molten resin to form a resin layer 10.

The resin layer 10 is left standing until it is cured. In this case, instead of laminating the reinforcing layer 7, finely cut glass fibers, carbon fibers, or aluminum powder may be used instead. It may be filled with a mixed resin.

Next, after waiting for the resin layer 10 to harden, the fence pole 3 is removed as shown in FIGS. 1(G) and 2, and the reference model 2 is demolded. As a result, the resin penetrates into the bonding hole 9 (at the same time as the resin layer 10 is bonded to the receiving piece body 8, the shape of the reference model 2 is transferred and duplicated on the surface of the resin layer 100, and the shape is extremely faithful to the part shape. A receiving piece 18 having a receiving surface 18a is obtained.

Effects of the Invention As explained in detail above, according to the method of the present invention, hard members such as steel balls are concentrated in the parts that require the most wear resistance, that is, the resin surface layer, so the durability is improved compared to the conventional method. It has excellent wear resistance and toughness, and because it requires less hard material, pinholes do not occur.

[Brief explanation of drawings]

Fig. 1 fAl, (Bl, (C), CD), (
B), LF), (G) C) Process explanatory drawings showing one embodiment of the present invention (7), and FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1(G). 2... Reference model, 4... Pretreatment layer, 5... Steel ball (hard member), 6... Gel coat layer, 7...
... Reinforcement layer, 8... Ukeko body, 10... Resin layer, 1
8... Ukekoma. 18a...Uke surface. Figure 1 (E)

Claims (1)

[Claims] (1) A method of manufacturing a jig receiving piece for positioning a predetermined part, which includes the steps of arranging a large number of hard members on the surface of a reference model, and placing the hard members on the surface of the reference model on which the hard members are arranged. A process of arranging the receiving piece bodies facing each other with a predetermined gap between them, filling the gap between the reference model and the receiving piece body with molten resin, curing it, and simultaneously bonding the resin layer to the receiving piece body. A method for manufacturing a jig receiving piece, the method comprising: forming a receiving surface corresponding to the shape of the component on the receiving piece main body side.