KR100366844B1 - The manu facturing method of the ring of which the outer ring turns around - Google Patents

Abstract

The present invention is intended to contribute to the improvement of the quality and manufacturing efficiency of the double ring with the outer ring assembled on the inner ring, such as the rosary ring for the Rosary of Rosary and the chiropractor using the finger. The inner ring is dimensioned so that the flange can be inserted into the outer ring, the inner ring is temporarily inserted into the outer ring, and the inner ring is extended to the taper of the diameter jig for inner ring, and the blades of the diameter jig taper are temporarily radiated with the core. The inner ring is expanded in the direction to be seated on the outer ring and then removed.

Description

The manu facturing method of the ring of which the outer ring turns around}

The present invention is to improve the quality of the double ring is assembled so that the outer ring on the inner ring, such as the rosary ring used when the Catholic believers devoted the Rosary, the acupressure ring used for the purpose of relieving fatigue through acupressure, etc. And it relates to a method of manufacturing a double ring that can contribute to the improvement of manufacturing efficiency.

In Fig. 1, the method of manufacturing a double ring up to now is to open the C-shaped outer ring 2 whose inner diameter is made slightly larger than the outer circumferential surface diameter of the inner ring 1 so that the inner ring 1 is larger than both flanges 3 of the inner ring 1, The seam was finished by inserting the ring 1 into the ring 1 and tearing down the outer ring 2 and then welding and polishing the broken portion of the outer ring 2 to remove the welding tip.

However, due to the lack of welding technology and carelessness of the welding work, the welding defect rate was surprisingly high and the difficulty of welding was high, which made it relatively inexpensive, and at first glance, the welding trace (4) of the outer ring (2) was obvious. Dignity was also low.

The present invention is to provide a double ring with a large effect of improving the quality and economical efficiency of the double ring.

According to the present invention, the outer diameter of the flange of the inner ring is a dimension through which the outer ring can pass, and when the outer ring is temporarily inserted in the inner ring, the inner ring is extended to the diameter jig for inner ring and then the cotter-type core is forcibly inserted into the diameter jig. As the jig spreads in the centrifugal direction, the inner ring is enlarged and characterized in that the manufacturing method of the outer ring non-contact double ring to be seated on the outer ring.

1 is a perspective view of a typical double ring

2 is an exploded view of a double ring according to the present invention

Figure 3 is an illustration of a state in which the double ring is inserted into the expansion jig for the inner ring

4 is an exemplary view showing a state in which the inner ring is expanded by inserting a core into a diameter-diameter jig fitted with a double ring;

<Description of Symbols for Major Parts of Drawings>

11: inner ring 12: outer ring

13 Flange 20 Diameter Jig

21: taper 23: wings

24: core

In Fig. 2, in the double ring of the present invention, the outer ring 12 is a dimension-invariant material that does not change the given dimension from the time of completion to completion and the inner ring 11 is a small diameter at the time of injection, after completion of diameter. It is a deformable material with a changed dimension. Previous double rings were of an invariant material with an inner ring and a dimension with a dimension that is reduced in the outer ring. First of all, this is different from the past.

In addition, the outer ring 12 is made of hard metal because the dimension does not change, and the inner ring 11 should be made of soft metal because the inner ring 11 should be able to be expanded. If it is not a soft metal, it is changed to soft properties through heat treatment.

The inner ring 11 is formed so that the outer diameter of the flange 13 is slightly smaller than the inner diameter of the outer ring 12 so that the inner ring 11 can be inserted without opening the outer ring 12 so that the outer ring between the two flanges 13 is open. Let (12) be located.

In FIG. 3, a specially designed enlargement mechanism is needed to enlarge the inner ring 11 and to trap the outer ring 12 between its flanges 13. This diameter expansion mechanism is composed of a diameter jig 20 and a core 24. The enlarged jig 20 has a tapered outer circumferential surface, and the tapered portion 21 has a jaw-shaped wing 23 formed by a slit 22 that is slit 22 in the lateral direction where the circumference is equally divided. It has a given structural feature, and when the wings 23 are opened and released, they spontaneously retract by their elasticity.

The core 24 is to spread the wings 23 of the enlarged jig 20 radially at a time, and is a kind of conical wedge, and the tip portion easily enters into the tip of the wing 23 in a normal state. It is as large as possible.

The preliminary double ring with the inner ring 11 fitted to the outer ring 12 so that the outer ring 12 is positioned between the two flanges 13 is no longer held in the tapered portion 21 of the expansion jig 20. Lightly insert until it does not go.

As shown in FIG. 4, when the tip of the core 24 is inserted into the tip of the blade 23 and the pressure is applied in the direction as shown in FIG. 4, all the blades 23 are simultaneously opened in the radial direction. At this time, the inner ring 11 straddling the tapered portion 21 is simultaneously expanded with the flange 13. The maximum value of the diameter is when the taper portion 21 is equal to the outer diameter of the body portion. Only then the inner diameter flatness of the inner ring 11 is secured.

After the inner ring 11 is fully enlarged, the core 24 is pulled out of the diameter jig 20. When the core 24 is pulled out, the wings 23 spontaneously retract by self-elasticity, and the inner ring 11 is loosened, and then the double ring is removed. The double ring removed in this way is the finished product.

As described above, the present invention can manufacture a high quality double ring quickly and easily easily and efficiently without covering the inner ring of one side by welding the inner ring and removing the welding tip to remove traces.

Claims (1)

The inner ring is dimensioned so that the flange can be inserted into the outer ring, and the core is inserted into the diameter jig while the inner ring is temporarily inserted in the taper of the diameter jig for inner ring while the inner ring is temporarily inserted into the outer ring. Of the outer ring non-contact double ring, characterized in that the inner ring is expanded with the outer ring by temporarily spreading the vanes given in the tapered portion, and then combined with the outer ring, and then the core is removed from the diameter jig to remove the completed double ring. Manufacturing method.