KR860002112B1 - Electropolishing method of steel ball - Google Patents

Electropolishing method of steel ball Download PDF

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KR860002112B1
KR860002112B1 KR1019830004036A KR830004036A KR860002112B1 KR 860002112 B1 KR860002112 B1 KR 860002112B1 KR 1019830004036 A KR1019830004036 A KR 1019830004036A KR 830004036 A KR830004036 A KR 830004036A KR 860002112 B1 KR860002112 B1 KR 860002112B1
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steel ball
cast iron
plate
rotating
steel
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KR1019830004036A
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KR850001935A (en
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이종채
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김정애
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00Electroplating: Baths therefor
    • C25D3/02Electroplating: Baths therefor from solutions
    • C25D3/22Electroplating: Baths therefor from solutions of zinc
    • C25D3/24Electroplating: Baths therefor from solutions of zinc from cyanide baths

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  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

This invention relates to the polishing method of steel ball used for a ball bearing. The fixed cast iron plate (1) is the anode and rotated cast iron plate (2) is the cathode, and fills with an electrolyte of 10 - 12 % NaCl solution (6) between two plates. The surface of the steel ball is polished by friction between the steel ball (7) and the v-shaped groove (4) and electrolysis between the steel ball and rotated cast iron plate(2).

Description

전해에 의항 강구 연마처리 방법Polishing method of steel ball by electrolysis

첨부도면은 본 발명의 실시상태의 종단면도.The accompanying drawings are longitudinal cross-sectional views of embodiments of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 고정판 2 : 회전판1: fixed plate 2: rotating plate

3 : 요철홈 4 : V자형홈3: uneven groove 4: V-shaped groove

5 : 절연체 6 : 전해액5: insulator 6: electrolyte

7 : 강구7: steel ball

본 발명은 볼베어링등으로 사용되는 강구(鋼球 : Steel Ball)의 표면연마 처리방법에 관한 것으로서, 더욱 상세히는 전해액내에서 양전극을 형성하고 있는 고정주철판과 회전주철판 사이세서 강구가 회전주천판의 V자형 홈과의 마찰에 의하여 연마됨과 동시에 전기분해에 의하여 그 표면이 분해되면서 보다 정밀한 강구로 연마되게 하기 위한 것이다.The present invention relates to a surface polishing treatment method of steel balls (鋼球: steel ball) used in ball bearings, etc. More specifically, a fixed cast iron plate and a rotating cast iron plate sizer steel ball forming a positive electrode in the electrolyte solution is a rotating cast sheet It is intended to be polished by a more precise steel ball while being polished by friction with the V-shaped groove of the surface and decomposed by electrolysis.

지금까지의 강구연마는 평활한 고정 주철판과 강구가 삽입되는 다수의 V자형 홈이 동심원상으로 형성된 회전주철판 사이에서 강구가 양주철판과의 회전마찰에 의하여 그 표면이 연마되게 하는 방법이 주로 사용되어 왔으며, 최근에는 연마효율을 높이기 위하여 강구와 V자형 홈의 표면에 금강사등의 연마제를 살포하거나, 또는 경유등의 연삭유를 주유해줌으로써 연마시 발생되는 열을 냉각시키고, 연마칩등을 외부로 배출시키는 효과를 기대하고 있다. 그러나 이와같은 종래의 강구연마 방법은 강구와 주철판이 마찰되면서 연마되는 물리적 방법에 불과했기 때문에 정밀도에 한계가 있어 고밀도의 가공에는 적합치 못했을 뿐만 아니라, 강구의 소재가 고경도의 금속일 경우, 주철판의 마모가 심하고, 많은 연마시간이 요구되어 결과적으로 생산원가가 상승되는 문제점을 내포하고 있었다.Until now, the method of grinding steel ball is to make the surface polished by rotating friction with both cast iron plates between the smooth fixed cast iron plate and the rotating cast iron plate in which a plurality of V-shaped grooves into which steel balls are inserted are formed concentrically. Recently, in order to increase the polishing efficiency, the surface of steel balls and V-shaped grooves are sprayed with abrasives such as gold steel, or fuel oil such as light oil is used to cool the heat generated during polishing, It is expected to release to the outside. However, such a conventional steel grinding method is only a physical method in which steel balls and cast iron plates are rubbed and polished, so they are not suitable for high-density machining due to limitations in precision, and when steel materials are hard metals, The wear of the iron plate is severe, and a lot of polishing time is required, resulting in a problem that the production cost is increased.

본 발명은 이와같은 종래의 제결점을 제거키 위하여 발명된 것으로서, 상측 고정주철판과 하측의 회전주철판을 양극으로 하여 양극 사이에 전해액을 채운후, 회전주철판을 회전시켜 강구가 회전주철판의 V 자형 홈과의 마찰에 의하여 연마됨과 동시에 강구와 회전주철판 사이에서 전기분해가 이루어지면서 강구의 표면이 분해되어 연마되게 함으로써, 강구 소재의 경도에 상관없이 고정밀도의 강구를 손쉽게 제조할 수 있게한 것을 특징으로 하는 것으로서 이하 본 발명을 첨부도면에 의거하여 상세히 설명하면 다음과 같다.The present invention has been invented to eliminate such conventional defects, the upper fixed cast iron plate and the lower rotating cast iron plate as an anode to fill the electrolyte between the anode, the rotating cast iron plate to rotate the steel ball rotating cast iron plate It can be easily manufactured with high precision steel ball regardless of the hardness of steel ball by grinding the surface of steel ball as it is polished by friction with V-shaped groove and electrolysis between steel ball and rotating cast iron plate. When the present invention will be described in detail with reference to the accompanying drawings as follows.

첨부도면은 본 발명의 실시상태를 나타내는 연마장치의 종단면도로서, 본 발명에 사용되는 연마장치는 고정판(1)이 +전극으로 되어 있고, 회전판(2)이 -전극으로 되어 있으며, 이 회전판(2)상에는 다수의 동심원상의 요철홈(3)이 형성되어 V자형 홈(4)이 형성된 절연체(5)가 끼워져 있고, 저면에는 회전축(7)이 부착되어 있다.The accompanying drawings are longitudinal sectional views of the polishing apparatus showing the embodiment of the present invention. In the polishing apparatus used in the present invention, the fixing plate 1 is a + electrode, the rotating plate 2 is a-electrode, and the rotating plate ( On 2), many concentric uneven grooves 3 are formed, and an insulator 5 having a V-shaped groove 4 is fitted therein, and a rotating shaft 7 is attached to the bottom surface.

그리고 상기 + 전극과 -전극을 형성하고 있는 고정판(1)과 회전판(2)은 전기분해가 이루어질 수 있도록 전도체의 금속으로 형성되어 있으며, 강구(7)를 압압하고 있는 상측 고정판(1)은 연마시 강구(7)가 압압된 상태에서 회전하기 때문에 경질의 강구(7)에 의하여 그 표면이 점차 마모되므로 그 표면이 평면을 유지하게끔 종종 깎아줄 필요가 있고,따라서 고정판(1)의 강도는 연삭작업이 가능한 범위내의 것을 요구한다.The fixing plate 1 and the rotating plate 2 forming the + electrode and the-electrode are formed of a metal of a conductor so that electrolysis can be performed, and the upper fixing plate 1 pressing the steel balls 7 is polished. Since the steel ball 7 rotates in a pressed state, the surface is gradually worn out by the hard steel ball 7, so it is often necessary to shave the surface to maintain a flat surface, so that the strength of the fixing plate 1 is ground. It demands that the work is possible.

다시 상기 고정판(1)과 회전판(2) 사이에는 전해액(6)이 채워져서 양전극 사이를 순환하게 되어 있고, 이 전해액(6)은 염화나트륨(NaCl)의 수용액으로 이루어져 있으며, 그 농도가 높아지면 과전류가 발생하여 방전현상이 일어날 우려가 있고, 농도가 너무 낮으면 전기 분해의 속도가 너무느려 연마효율이 저하되기 때문에 보통 10∼12%의 염화나트륨 용액이 바람직하고, 농도가 그보다 높아지면 전기분해의 속도가 빨라져 강구의 연마속도가 빨라지고, 반대로 낮아지면 연마속도가 느려지므로 일반적으로 높은 정밀도를 요구하는 강구의 가공에는 농도를 보다 낮게하고, 저정밀도의 강구의 가공은 보다 높은 농도에서 작업하는 것이 효율적이다.Again, the electrolyte 6 is filled between the fixed plate 1 and the rotating plate 2 to circulate between the positive electrodes. The electrolyte 6 is composed of an aqueous solution of sodium chloride (NaCl), and when the concentration increases, an overcurrent When the concentration is too low, the rate of electrolysis is too slow, and the polishing efficiency is lowered. Therefore, a solution of sodium chloride of 10 to 12% is usually preferred, and when the concentration is higher, the rate of electrolysis is higher. The faster the steel is, the faster the steel is polished and, conversely, the slower the steel is, the slower the grinding speed is. Therefore, when processing steel balls that require high precision, the concentration is lowered. .

그리고 본 발명의 첨부도면에는 본 발명에 의하여 강구(7)가 연마되는 실시상태의 예만을 도시하여 그 도시를 생략하였으나, 강구가 투입되고 배출되는 장치라든가 전해액이 순환되는 과정등은 본 발명을 실시하는데 따른 부가적인 요소이므로 그에 의하여 본 발명의 제한되는 것이 아니다.In the accompanying drawings of the present invention, only the example of the embodiment in which the steel ball 7 is polished according to the present invention is illustrated, and the illustration thereof is omitted. Since it is an additional element, it is not to be limited by the present invention.

이와같은 본 발명의 강구 연마처리 방법에 의하여 강구를 가공하기 위해서는 먼저 고정판(1)과 회전판(2)사이에 강구(7)를 채워넣고 강구(8)가 절연체(5)의 V자형 홈(4)내에 위치하게 한 후, 고정판(1)을 가압한 상태에서 회전축(7)을 회전시키면 강구(7)가 절연체(5)의 V자형 홈(4)과 고정판(1) 사이에서 밀착되어 회전되면서 V자형 홈(4)과의 마찰에 의하여 강구(7)의 표면이 연마된다.In order to process the steel balls by the steel ball polishing treatment method of the present invention, first, the steel balls 7 are filled between the fixed plate 1 and the rotating plate 2, and the steel balls 8 are formed in the V-shaped grooves 4 of the insulator 5. ) And then, when the rotating shaft 7 is rotated while the fixing plate 1 is pressed, the steel balls 7 are rotated in close contact between the V-shaped groove 4 of the insulator 5 and the fixing plate 1. The surface of the steel balls 7 is polished by friction with the V-shaped grooves 4.

이때 동시에 양전극(1)(2) 사이에 전류가 흐르게 하면 양전극(1)(2) 사이에서는 전기분해가 이루어지게 되는 바, 전기는 +전극인 고정판(1)을 통하여 강구(7)에 전달된 후, 강구(7) 표면에서 전기분해가 이루어지면서 -전극인 회전판(2)으로 흘러들어가게 되는데, 강구(7)의 표면은 미연마 상태에서는 미세한 울퉁불퉁한 면을 형성하고 있으므로 회전하는 강구(7)의 표면에서 돌출된 부분이 먼저 분해되게 되어, 많은 회전을 거친후에는 결국 강구(7)의 표면에서 울퉁불퉁면은 없어지고, 균일하고 미려한 가공면이 형성된 강구(7)가 얻어진다.At this time, when current flows between the positive electrodes 1 and 2, electrolysis is performed between the positive electrodes 1 and 2, and the electricity is transferred to the steel ball 7 through the fixing plate 1, which is a positive electrode. Then, the electrolysis is made on the surface of the steel ball (7) flows into the rotating plate (2)-the electrode, the surface of the steel ball (7) forms a fine bumpy surface in the non-polishing state, so the rotating steel ball (7) The part protruding from the surface of is first decomposed, and after many rotations, the bumpy surface disappears from the surface of the steel ball 7, and the steel ball 7 with a uniform and beautiful processing surface is obtained.

이와같은 본 발명의 전해에 의한 강구 연마처리 방법은 강구(7)를 회전판(2)의 V자형 홈(4)과의 마찰에 의하여 연마함과 동시에 각 전기분해에 의하여 보다 정밀하게 연마하기 때문에 초경질의 금속을 보다 신속하고 정밀하게 가공할 수 있는 잇점이 있으며, 본 발명에 의하여 가공할 수 있는 강구(7)는 전기분해가 되는 전도체는 어느 것이나 연마가 가능하여 그 소재의 재질에 구애를 받지않을 뿐만 아니라, 그 강도가 초경질의 금속이라 할지라도 전기분해에 의하여 그 표면이 쉽게 분해되기 때문에 보다 낮은 생산원가로서 정밀도가 높은 강구를 손쉽게 제조할 수 있는 신규의 발명인 것이다.In the electrolytic steel polishing method according to the present invention, the steel balls 7 are polished by friction with the V-shaped grooves 4 of the rotating plate 2, and at the same time, they are polished more precisely by electrolysis. There is an advantage that the metal of quality can be processed more quickly and precisely, and the steel balls 7 which can be processed by the present invention can be polished to any of the conductors which are electrolyzed so that they will not be affected by the material of the material. In addition, even if the strength of the ultra-hard metal, the surface is easily decomposed by electrolysis, so it is a novel invention that can easily produce high precision steel balls at a lower production cost.

Claims (1)

(정정) 고정주철판의 다수의 V자형 홈이 동심원상으로 형성된 회전주철판에 의하여 강구를 연마하는 방법에 있어서, 고정판(1)과 회전판(2)을 각각 +전극과 -전극으로 하고 양전극 사이에 10∼12%의 염화나트륨 수용액의 전해액(6)을 순환시켜 상기 회전판(2)의 다수의 동심원상의 요철홈(3)내에 삽입된 절연체(5)의 V자형홈(4)에 재치된 강구(7)가 V자형 홈(4)과의 회전마찰에 의하여 연마되면서 동시에 전기분해에 의하여 연마되게 한 것을 특징으로 하는 전해에 의한 강구연마 처리방법.(Correction) A method of grinding steel balls by a rotating cast iron plate in which a plurality of V-shaped grooves of a fixed cast iron plate are formed concentrically, wherein the stationary plate 1 and the rotating plate 2 are formed as + electrodes and-electrodes, respectively, between the positive electrodes. Steel balls placed in the V-shaped grooves 4 of the insulator 5 inserted into the plurality of concentric concave-convex grooves 3 of the rotating plate 2 by circulating the electrolyte solution 6 of the aqueous solution of sodium chloride at 10 to 12% ( The electrolytic steel ball polishing treatment method characterized in that 7) is polished by rotational friction with the V-shaped groove (4) and at the same time by electrolysis.
KR1019830004036A 1983-08-27 1983-08-27 Electropolishing method of steel ball KR860002112B1 (en)

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KR1019830004036A KR860002112B1 (en) 1983-08-27 1983-08-27 Electropolishing method of steel ball

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KR850001935A KR850001935A (en) 1985-04-10
KR860002112B1 true KR860002112B1 (en) 1986-11-26

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