KR200320833Y1 - Inside diameter extension apparatus for ring - Google Patents

Abstract

The present invention relates to an inner diameter expander of a ring that can obtain a ring of a desired size by properly processing the inner diameter of the ring to form a predetermined size, and conventionally expands the inner diameter by hitting the outer surface of the ring 7 with a hammer. It takes a considerable time to process the ring and requires a highly skilled function. Especially, the outer surface of the ring is formed with a curved surface such as a mark caused by a hammer strike, thus finishing grinding The work is required, so that the grinding edge takes a considerable time to match the weight of the gold in consideration of the chipping of the surface during the grinding operation, the present invention is the ring 7 is fitted A tapered roller 20 and a support roller 30 for supporting the blotting roller 40 provided with a plurality of grooves 41 are arranged between both side walls 10 so that hardness can be increased. Since the inner diameter of the silver rings 7 can be easily expanded and the surface of the ring 7 can be smoothly maintained, the closed end of the ring 7 is broken in the related art, and a separate finishing grinding operation must be performed. It is resolved at this time.

Description

INSIDE DIAMETER EXTENSION APPARATUS FOR RING}

The present invention relates to an inner diameter expander of a ring that can obtain a ring of a desired size by appropriately processing the inner diameter of the ring to form a predetermined size.

In general, the rings that are fitted to the fingers are formed with different inner diameters of the rings according to the thickness of the fingers, and accordingly, rings of various sizes are required according to the dimensions.These rings are gradually expanded after forming a ring to a certain size. The rings are made of rings with different sizes of inner diameters.

Conventionally, as shown in FIG. 4, a ring 7 is inserted into an outer circumferential surface of a pressure gauge tube 1 of the upper and lower beam type combined with a plurality of fragments 1a, and the upper and lower beams inserted into the pressure gauge tube 1 are inserted. The expander was mainly used to expand the inner diameter of the ring 7 by elevating the working rod 2 of the mold. The operation of these expanders is as follows.

That is, when the operating rod 6 provided at the lower part of the operating rod 2 rotates, the cam 5 installed eccentrically on one side of the shaft rod 4 pushes the operating rod 2 while rotating accordingly, and then the rising operation The bar 2 presses the inner wall surface of the paper tube 1, and the upper piece opens outward in the state where the fragment 1a of the paper tube 1 is fixed at its lower end. Accordingly, the inner diameter thereof is expanded by the pressing of the thin piece 1a in which the ring 7 fitted to the outer circumferential surface of the papermaking tube 1 opens.

However, the above-described conventional technique can effectively expand the inner diameter of the ring when the ring material is formed of pure gold (24ｋ), so that the ductility and malleability of the pure gold is good, but the ring material is an alloy, which causes considerable problems. do. That is, 18 kV of which the content of pure gold with good malleability and ductility is formed at 75% or less. Rings, such as 14ｋ, are maintained at a relatively high hardness, and when the inner diameter of the ring is forcibly pressed using the dilator as described above, a ringing phenomenon occurs that causes a ring to be formed. Use is extremely limited.

Therefore, when machining rings of high hardness alloy, insert the ring mainly on the tapered roller's outer circumference and hit the outer surface of the ring with a tool such as a hammer to gradually expand its inner diameter gradually. Etc. are mainly used.

However, the method of the above-described hand tool takes a considerable amount of time to process the ring and at the same time requires a high level of skill. Particularly, the outer surface of the ring has a curved surface such as a mark generated by a hammer strike. Due to the formation, it is necessary to finish grinding work, which results in a waste time that takes considerable time to match the weight of the gold in consideration of the shaving of the surface of the gold during the grinding work.

An object of the present invention is to provide an inner diameter expander of a ring that can easily expand the inner diameter of a ring having a high hardness by solving the above-described conventional problems.

1 is a perspective view illustrating an embodiment of the present invention.

2 is a front sectional view of the main part of the present invention.

3 is a side cross-sectional view of the present invention.

4 is a cross-sectional view illustrating the prior art.

<Description of the symbols for the main parts of the drawings>

7: ring

10: sidewall

10a: left arm

20: tapered roller

21: handle

30: support roller

31: eccentric shaft

32: Operation lever

40: blotting roller

41: home

50: Bearing

60: electrolytic polishing machine

The present invention for achieving the above object is a side wall 10 and a tapered roller 20 and the tapered roller 20 which is arranged between the side wall 10 and a predetermined distance spaced apart on the base 10a. The support roller 30 fixedly installed at one side, the tapered roller 20, and horizontally spaced apart by a predetermined distance, and both ends thereof have an eccentric shaft 31 arranged on the side wall 10. And, the insertion roller is inserted into the outer circumferential surface of the support roller 30, the outer circumferential surface of the plunger roller 40 is formed with a plurality of grooves 41, the operating lever 32 is fixed to one side of the support roller 30 It is characterized by being constructed.

Hereinafter, described in detail by the accompanying drawings a preferred embodiment that can achieve the above object is as follows.

1 and 2 show a preferred embodiment of the present invention, both side walls 10 are placed on the upper surface of the seat 10a at a predetermined distance from each other, and between the side walls 10. The tapered roller 20 is formed to be inserted into a gently inclined surface, and both ends thereof are arranged to penetrate through the side wall 10.

One end of the tapered roller 20 penetrating the side wall 10 is fixed to the disk-shaped handle 21 to rotate the tapered roller 20.

On the upper portion of the tapered roller 20, the support rollers 30 are horizontally spaced apart from each other by a predetermined distance, and eccentric shafts 31 protruding from both ends thereof are formed on both side walls 10.

The outer circumferential surface of the support roller 30 is provided with a press roller 40 having a plurality of semi-circular grooves 41 formed on the outer surface thereof, and a bearing 50 is inserted between the press roller 40 and the support roller 30 to insert the bearing paper. The roller 40 supports the support roller 30 so as to freely rotate and move left and right at the outer circumferential surface.

One side of the support roller 30 is fixed to the operation lever 32 is rotated at a predetermined angle to rotate the support roller 30 at a predetermined angle and at the same time to operate the eccentric shaft 31 provided at both ends thereof. By this, the support roller 30 is moved up and down.

In the drawing, reference numeral 60 denotes an electrolytic polishing machine which can obtain a polished polished surface on the surface of the ring 7 by electrolysis of the workpiece as an anode as opposed to electroplating, and 61 denotes various kinds of electrolytic polishing machines 60. It is a control unit to control the function.

Hereinafter, an operation process of the present invention configured as described above will be described.

As shown in FIG. 2, when the tapered roller 20 is arranged between both sidewalls 10, the handle 21 fixed to one side of the tapered roller 20 is pulled out of the sidewall 10. As shown in the dashed-dotted line in FIG. 2, the tip of the tapered roller 20 is separated from the side wall 10 and exposed. The ring 7 is inserted through the exposed end of the tapered roller 20, and the tip of the tapered roller 20 is inserted into the shaft hole of the side wall 10 so that the tapered roller 20 is arranged between both side walls. do.

Thereafter, the squeeze roller 40 located above the tapered roller 20 is moved left and right from the support roller 30 to correspond to the cross-sectional shape of the ring 7 of the grooves 41 formed on the outer circumferential surface of the squeezed roller 40. When the groove 41 is positioned on the upper surface of the ring 7 and then rotates the operation lever 32 fixed to one side of the support roller 30 at a predetermined angle, the support roller 30 is rotated accordingly. At this time, as shown in FIG. 3, the support roller 30 is moved downward by the eccentric shaft 31 provided at both ends of the support roller 30, and at the same time, the psi roller 40 is moved along the The ring 7 inserted into the tapered roller 20 is pressed like a dashed line.

In such a state, when the handle 21 fixed to one side of the tapered roller 20 is rotated, the tapered roller 20 is rotated and the ring 7 and the blotting roller 40 rotate oppositely to each other by the rolling friction force. (7) is pressed to gradually expand the inner diameter of the ring (7).

At this time, the ring 7 is naturally expanded without forming a curved surface on the outer surface of the ring 7 because the ring 7 is pressed against the groove 41 of the press roller 40 corresponding to the cross-sectional shape. Even if the grinding operation is not performed, the appearance of the ring 7 can be kept beautiful.

Accordingly, in the prior art, closed rings of alloy products such as 18ｋ and 14ｋ, which have high hardness, are prevented from being broken during processing, and particularly, curved surfaces generated when the outer peripheral surface of the ring 7 is processed with hammers. The troublesome process of finishing grinding is eliminated.

The outer surface of the tapered roller 20 is marked with a scale (20a) at regular intervals, in the process of extending the inner diameter of the ring (7) ring 7 and the blotting roller 40 toward the wider inner diameter Ease of use is further enhanced as the ring 7 can be expanded while sequentially moving and the extension work can be stopped at the scale 20a corresponding to the desired dimension. Of course, the tapered roller 20 is formed of a gentle inclined surface is moved to one side, the size of the cross-section is gradually widened.

In addition, when the electrolytic polishing machine 60 is installed on the rear of the seat 10 a in which the roller-type expander is installed, the electrolytic polishing machine 60 can be polished by electropolishing the surface of the ring 7 as shown in FIG. (7) can be extended to the desired dimensions, and the surface of the ring can be electropolished immediately to obtain gloss, which also enhances the convenience of use.

As described above, the present invention has a tapered roller 20 into which the ring 7 is fitted, and a support roller 30 for supporting the press roller 40 provided with a plurality of grooves 41. And a closed end in which the ring 7 is broken in the related art because it can be easily expanded between the rings 10 and the inner diameter of the ring 7 having a high hardness can be easily expanded, and the surface of the ring 7 can be kept smooth. Disadvantages of having to perform separate finishing grinding work are eliminated at once.

Claims (2)

Both side walls 10 which are installed at a predetermined distance apart from the upper seat 10a, the tapered roller 20 arranged between the side walls 10, and the handle 21 fixed to one side of the tapered roller 20 ) And a horizontally spaced apart from the tapered roller 20 by a predetermined distance, and both ends of the support roller 30 having an eccentric shaft 31 arranged on the side wall 10 and the support roller 30 The inner circumferential expander of the ring, characterized in that the material is inserted into the outer circumferential surface and the outer circumferential surface is composed of a plunger roller 40 having a plurality of grooves 41 formed therein, and an actuating lever 32 fixed to one side of the support roller 30. . The inner diameter expander of claim 1, wherein an electrolytic polishing machine (60) is installed at the rear of the seat (10a) where the inner diameter expander is installed.