JP3052133B2 - Thin molded body, manufacturing method thereof, primary processed product integrally molded with thin molded body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative member which is attached to the outer surface of a functional member such as a spur gear or an outer surface of various articles such as a daily necessity such as a cigarette lighter, a compact or a buckle of a belt and office equipment. The present invention relates to a thin molded article, a method of manufacturing the same, and a primary processed product obtained by integrally molding the thin molded article.

[0002]

2. Description of the Related Art For example, a thin molded article a having the shape of a decorative member used by being attached to an outer surface of a cigarette lighter or the like.
Is generally manufactured as follows.

[0003] For example, a three-dimensional pattern portion 2 such as a flora and fauna or a geometric pattern is integrally formed on the surface of the metal substrate portion 1, and then the outer portion 1 ′ of the metal substrate portion 1 is formed along the contour of the three-dimensional pattern portion 2. At the same time, the through-hole portion 3 'is removed along the contour of the through-hole 3 provided in the three-dimensional pattern portion 2 (FIGS. 11 to 14).

[0004]

The removal of the outer portion 1 'and the through-hole portion 3' is generally carried out by press working, but it goes without saying that a punching die suitable for each removed portion is prepared. And usually requires as many machining operations as the number of parts to be removed, increasing costs. In some cases, the removal of the through-hole portion 3 ', that is, punching, is performed by cutting with a saw tooth, but in this case, the cost is increased and time is required.

Moreover, the three-dimensional pattern portion 2 of the thin molded body a
In general, there are many complicated, complicated, and delicate materials, and the number of the through holes 3 increases accordingly. Therefore, so-called punching for removing the through hole portions 3 'requires special skill.

As the thin molded body a, the three-dimensional pattern portion 2 actually has a decorative effect, which is sufficient, so that the metal substrate portion 1 itself is eventually lost. Preferably, on the contrary, if present, the thickness t of the metal substrate portion 1 is reduced to the outer surface f of the article.
Is exposed and unsightly.

However, the fact that the metal substrate portion 1 having the three-dimensional pattern portion 2 formed on the surface thereof has the required thickness t is necessary when removing the through-hole portion 3 ', that is, when performing the hole punching operation or the like. 1 is indispensable to be gripped by a chuck of a machine tool such as a lathe, for example, and the thin molded body a cannot be prevented from becoming thick and irregular. Further, as the thin molded body, there is a type formed into a shape of a functional member such as a spur gear, for example, in addition to the type formed into the shape of the decorative member described above. However, there is a problem similar to that of the thin molded body a of the type described above in terms of the complexity of the processing operation and the like.

Accordingly, the present invention is intended to enable mass production of a thin molded body in the form of a functional member such as a spur gear or a decorative member in which a geometric pattern or the like is three-dimensionally formed on the surface with high precision at low cost. The purpose is to do.

[0009]

Means for Solving the Problems A method for manufacturing a thin molded article of the present invention will be described below with reference to a first embodiment. A thin molded body portion A ', an annular body portion 4 surrounding the thin molded body portion A', and four connecting pieces 5 connecting the thin molded body portion A 'and the annular body portion 4 are formed on one surface 6a of the substrate portion 6. The integrally formed primary workpiece B is gripped and rotated on a chuck 7 of a lathe provided with a receiving recessed portion 10 in which a bottom surface 10a is provided with a receiving recessed portion 10 in which a fitting portion 11 is fitted and fitted to the thin molded body portion A '. By cutting off the substrate portion 6 from the other surface 6b side, a secondary processed product C in which the thin molded body portion A 'and the annular body portion 4 are connected by the connecting piece portions 5. Then, the thin molded body portion A ′ is cut off from all the connecting piece portions 5.

The primary processed product of the present invention will be described below with reference to the first embodiment. A thin molded body portion A 'in the form of a decorative member in which a functional member such as a spur gear or a geometric pattern is three-dimensionally expressed on the surface, a positioning portion surrounding the thin molded body portion A' and positioning it with respect to a chuck of a machine tool such as a lathe. 9 are formed integrally with the one surface 6a of the substrate portion 6 with the four connecting piece portions 5 connecting the thin molded body portion A 'and the annular body portion 4 to each other.

The thin molded article of the present invention will be described with reference to a first embodiment. A thin molded article portion A ', an annular body portion 4 surrounding the thin molded article portion A' and the thin molded article portion A 'and an annular body portion 4 are connected integrally to the first surface 6a of the substrate portion 6 to form a primary processed product B having a bottom surface 1
0a is gripped and rotated by a chuck 7 of a lathe provided with a receiving recessed portion 10 in which a fitting portion 11 which fits and fits the thin molded body portion A 'is cut out. By cutting and removing from the surface 6b side, a thin molded body portion A '
And a toroidal part 4 are connected by connecting piece parts 5... To form a second processed product C. Further, the spur gear A as a thin molded body is cut off from all the connecting piece parts 5. Have been.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIGS. 1 (a) and 1 (b) show a first embodiment of a primary processed product of the present invention, and FIGS. 2 (a) and 2 (b) show a thin molded body portion and an annular body portion having a plurality of connecting pieces. FIGS. 3 (a) and 3 (b) show a second embodiment of a thin formed body according to the present invention.

A is a thin molded article of the present invention in the form of a spur gear as an example of a functional member (hereinafter simply referred to as a spur gear).
And made of a metal material such as copper or zinc. The spur gear A has a small and thin wall having a shaft hole A1 at the center, a diameter of, for example, about several mm to several tens mm, and a plate thickness of about 0.3 to 0.4 mm. (Fig. 3).

B is a primary processed product of the present invention in which a thin molded body portion A 'serving as a spur gear A is integrally molded.
The thin molded body portion A ', the annular body portion 4 surrounding the thin molded body portion A', and four connecting piece portions 5 connecting the thin molded body portion A 'and the annular body portion 4 are formed on one surface 6a of the substrate portion 6. (FIG. 1).

On the surface of the toroidal portion 4, a positioning projection 9 as a positioning portion for inserting and positioning into a positioning groove 8 provided in a chuck 7 of a machine tool such as a lathe, which will be described later, is formed. Have been.

The toroidal part 4 and the thin molded part A 'are formed such that the dimensions from the one surface 6a of the substrate part 6 to their surfaces, that is, the thicknesses thereof, are equal to each other.
The connecting piece portions 5 connecting them are formed to have a smaller thickness than those. The toroidal portion 4 and the thin molded body portion A 'may be formed so that their thicknesses are different from each other.

The portion excluding the thin molded body portion A ', the annular body portion 4 and the connecting piece portion 5 is a concave portion having the one surface 6a of the substrate portion 6 as a bottom surface.

Next, a method of manufacturing the spur gear A will be described.
This will be described with reference to FIGS. FIG. 4 shows a chuck of a machine tool such as a lathe for gripping the primary processed product B,
FIG. 5 shows a state in which the primary workpiece B gripped by the chuck is cut. Also, from the primary processed product B to 2
FIG. 6 shows a state where the next processed product C is cut out.

The chuck 7 of a machine tool such as a lathe is formed with a receiving recess 10 for receiving the primary work B, and the thin molded body portion A 'is fitted to the bottom surface 10a of the chuck. The fitting portion 11 is formed by excavation.

The positioning projection 9 is inserted into a position on the bottom surface 10a of the receiving recess 10 opposite to the positioning projection 9 formed on the primary workpiece B.
A positioning groove 8 is formed as a positioning portion for positioning the next processed product B with respect to the receiving recess 10 (FIG. 4).
That is, it is difficult to accurately match the thin molded body portion A 'with the fitting portion 11 of the chuck 7 because the thin molded body portion A' formed integrally with the primary processed product B has shallow irregularities. . Therefore, the positioning protrusion 9 of the primary processed product B is
The thin molded body portion A 'and the fitting portion 11 can be aligned with each other simply by being inserted into the positioning groove 8 of the receiving concave portion 10.

Therefore, by inserting the positioning projection 9 of the primary processed product B into the positioning groove 8 of the chuck 7 and fitting the primary processed product B into the receiving recess 10, the thin molded body portion A 'is fitted. The mating portion 11 is brought into a state of being accurately fitted and fitted. Thereafter, the primary processed product B is gripped and rotated by the chuck 7, and the other surface 6 b of the substrate portion 6 is rotated by the cutting tool 12.
Is cut and removed to the entire surface 6a while leaving the outer peripheral edge portion in an annular shape (FIGS. 5 and 6).

By cutting and removing the substrate portion 6, the toroidal portion 4, the thin molded portion A 'and the connecting piece portion 5, which are integrally formed on one surface 6a of the substrate portion 6, are independent of each other. Becomes Thereby, the thin molded body portion A '
And the annular body part 4 surrounding the secondary work part C are cut by the four connecting piece parts 5... While being independent of each other (FIG. 2).

Then, the desired spur gear A can be cut off from the toric portion 4 by cutting all the connecting piece portions 5 of the secondary processed product C by appropriate means.

Next, each of the first processed product and the thin molded product
Will be described with reference to FIGS.
FIGS. 7A and 7B show a second embodiment of the primary processed product of the present invention,
8 (a) and 8 (b) show a secondary processed product in which a thin molded body portion and an annular body portion are connected by a plurality of connecting pieces, and FIGS. 9 (a) and 9 (b) show a thin product of the present invention. 7 shows a second embodiment of a molded body. FIG. 10 shows a chuck of a machine tool such as a lathe for gripping the second embodiment of the primary processed product.

D is a decorative piece (hereinafter simply referred to as a decorative piece) as a thin molded body in the form of a decorative member in which a pattern shown on the surface of a foreign coin is three-dimensionally represented on the surface.
For example, it is made of a metal material such as copper or zinc. The three-dimensional pattern appearing on the surface of the decorative piece D has a structure in which a character string 14 of “HALF PENNY”, a sailing ship 15 and the sea 16 are integrally designed inside a ring-shaped outer edge 13. (FIG. 9).

The outer edge 13, the character string "HALF PENNY" 14, the sailboat 15 and the inner and outer peripheral edges of the sea 16 gradually become thinner without exposing a sharp end face cut by a blade. Has become.

The decorative piece D is attached, for example, to the outer surface of a cigarette lighter (not shown) by brazing or the like, and the three-dimensional pattern shown on the surface is continuous with the joint surface with the outer surface of the cigarette lighter. is there.

E is a primary processed product of the present invention in which a thin molded body portion D 'to be a thin molded body D is integrally formed. The primary processed product has a "HALF P" inside a ring-shaped outer edge portion 13.
ENNY "character string 14, a thin molded body part D 'having a three-dimensional pattern formed on the surface of the sailboat 15 and sea 16 integrally formed, a toric body part 17 surrounding the thin molded body part D' and the thin molded bodies The three connecting piece portions 18 connecting the portion D 'and the toroidal portion 17 are integrally formed on one surface 19a of the substrate portion 19 (FIG. 7).

On the surface of the annular body portion 17, a positioning projection 22 as a positioning portion for inserting and positioning into the positioning groove 21 provided in a chuck 20 of a machine tool such as a lathe is formed so as to protrude therefrom. ing.

The toroidal portion 17 is formed to have a uniform thickness, and the thin molded portion D 'is formed to have an uneven shape according to a three-dimensional pattern. The connecting piece portions 18 are formed with a smaller thickness than those.

The portion excluding the toroidal portion 17, the thin molded body portion D ′ and the connecting piece portion 18 is the one surface 19 of the substrate portion 19.
It is a concave portion with a as the bottom surface.

The method of manufacturing the decorative piece D is described in the first section.
Since the content is the same as that described in the embodiment, the description is simplified here. In a chuck 20 of a machine tool such as a lathe shown in FIG. 10, a receiving recess 23 for receiving the primary processed product E, and a fitting portion 24 for fitting the thin molded body portion D 'into a bottom surface 23a thereof are dug. The primary processing product E is received by inserting the positioning projection 22 at a position on the bottom surface 23a facing the positioning projection 22 formed on the primary processing product E. A positioning groove 21 is formed as a positioning portion for positioning with respect to the concave portion.

That is, in the same manner as in the case of the primary workpiece according to the first embodiment, the primary workpiece E is gripped by the chuck 20 while being positioned by the positioning projections 22 of the primary workpiece E. Rotate and cut with a cutting tool (not shown)
Thus, the other surface 19b of the substrate portion 19 is cut and removed to the one surface 19a while the outer peripheral portion thereof is left in an annular shape.

By cutting the substrate portion 19 to one surface 19a, the thin molded body portion D 'and the annular body portion 17 surrounding the thin molded body portion D' are separated from each other by three connecting piece portions. The secondary processed products F connected by 18 are cut out (FIG. 8).

Then, by cutting all the connecting piece portions 18 of the secondary processed product F by appropriate means, the intended decorative piece D can be cut off from the toroidal portion 17.

In the above description, a thin molded body made of a metal material has been described. However, the present invention is not limited to a metal material, but can be applied to a material such as a synthetic resin, a synthetic rubber, and a ceramic.

In the above description, an example was described in which the positioning groove was formed on the chuck side and the positioning protrusion was formed on the primary workpiece, but the positioning projection was formed on the chuck side and the positioning was performed on the primary workpiece. A hole may be formed. Although the case of cutting with a lathe has been described above as an example, the present invention is also applicable to a milling machine or the like.

[0038]

According to the present invention, the following effects can be obtained. A small, thin, thin molded body can be cut with high precision by using a machine tool such as a lathe, and it can be manufactured easily and in a short time. The desired thin molded body can be easily mass-produced without the need.

The positioning portions provided on both the bottom surface of the receiving concave portion of the chuck and the toroidal portion of the primary processed product are matched with the thin molded product portion only by matching the primary processed product with the chuck. Can be accurately aligned with the joint,
The primary processed product can be accurately fitted in the receiving recess. As a result, the time required for production can be reduced. That is, since it is not possible to deepen the unevenness of the thin molded body portion that is integrally molded with the thin primary processed product, it is difficult to accurately match the thin molded body portion with the fitting portion of the chuck. By providing the positioning parts on both the primary workpiece and the chuck, accurate positioning thereof can be easily performed.

[Brief description of the drawings]

FIGS. 1A and 1B show a first embodiment of a primary processed product of the present invention, wherein FIG. 1A is an enlarged front view thereof, and FIG.
It is an expanded sectional view in the III line.

FIG. 2 shows a secondary processed product in which a thin molded body portion and an annular body portion are connected by a plurality of connecting piece portions;
(a) is an enlarged front view thereof, and (b) is a III-II shown in (a).
It is an expanded sectional view in the I line.

3A and 3B show a first embodiment of the thin molded article of the present invention, wherein FIG. 3A is an enlarged front view and FIG. 3B is an enlarged side view.

FIG. 4 is an enlarged front view of a chuck of a machine tool such as a lathe that grips the first embodiment of the primary processed product of the present invention.

FIG. 5 is an enlarged cross-sectional view showing a state in which the first embodiment of the first processed product gripped by the chuck is cut.

FIG. 6 is an enlarged sectional view showing a state in which a secondary processed product has been cut out from the first embodiment of the primary processed product.

FIG. 7 shows a second embodiment of the primary processed product of the present invention, wherein (a) is an enlarged front view thereof, and (b) is an IV-I shown in (a).
It is an expanded sectional view in the V line.

FIG. 8 shows a secondary processed product in which a thin molded body portion and an annular body portion are connected by a plurality of connecting piece portions;
(a) is an enlarged front view thereof, and (b) is an enlarged sectional view taken along line IV-IV shown in (a).

FIG. 9 is a front view showing a thin molded body according to a second embodiment of the present invention.

FIG. 10 is an enlarged front view of a chuck of a machine tool such as a lathe that grips a second embodiment of a primary workpiece.

FIG. 11 is a plan view of a thin molded body manufactured by a conventionally known method.

FIG. 12 is a sectional view taken along the line II shown in FIG. 11;

13 is a sectional view taken along line II-II shown in FIG.

FIG. 14 is a sectional view of a substrate portion prepared for manufacturing a conventionally known thin molded body.

[Description of Signs] 4,17 Torus Portion 5,18 Connecting Piece Portion 6,19 Substrate Portion 6a, 19a One Surface of Substrate Portion 7,20 Chuck 9,22 Positioning Portion 10,23 Receiving Recess 11,24 Fitting Portion 12 Cutting tool A, D Thin molded body A ', D' Thin molded body part B, E Primary processed product

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int. Cl. ⁷ , DB name) B44C 1/14 A44C 27/00 B44C 5/00

Claims (4)

(57) [Claims] 1. A thin molded part in the form of a decorative member in which a functional member such as a spur gear or a geometric pattern or the like is three-dimensionally represented on the surface, an annular body surrounding the thin molded body, and the thin molded body. A primary processed product in which a plurality of connecting pieces for connecting to the toroidal portion are integrally formed on one surface of a substrate portion, and a receiving recess in which a fitting portion that fits and fits the thin molded body portion is formed on the bottom surface. It is gripped and rotated by a chuck of a machine tool such as a lathe, and the above substrate portion is cut off from the other surface side by a cutting tool, and the thin molded body portion and the annular body portion are connected by a plurality of connecting piece portions. A method of manufacturing a thin molded body, characterized by shaving a connected secondary processed product and further separating a thin molded body part from all the connecting piece portions. 2. The bottom surface of a receiving recess of the chuck and the bottom surface of the chuck.
Positioning portions for performing relative positioning with respect to each other are provided on both of the annular portions of the next processed product, and when the first processed product is gripped by the chuck, the positioning portions are made to coincide with each other. The method for producing a thin molded body according to claim 1. 3. A thin molded body in the form of a decorative member in which a functional member such as a spur gear or a geometric pattern or the like is three-dimensionally formed on the surface, and a thin molded body surrounding the thin molded body is positioned with respect to a chuck of a machine tool such as a lathe. The thin molded body is characterized in that an annular body part having a positioning portion to be formed and a plurality of connecting pieces connecting the thin molded body part and the annular body part are integrally formed on one surface of the substrate part. Primary processed product. 4. A thin member manufactured by the manufacturing method according to claim 1 and having a shape of a decorative member in which a functional member such as a spur gear or a geometric pattern is three-dimensionally expressed on a surface. Molded body.