KR0160561B1 - Working method of bearing plate with ceramics groove and device therefor - Google Patents
Working method of bearing plate with ceramics groove and device thereforInfo
- Publication number
- KR0160561B1 KR0160561B1 KR1019950003838A KR19950003838A KR0160561B1 KR 0160561 B1 KR0160561 B1 KR 0160561B1 KR 1019950003838 A KR1019950003838 A KR 1019950003838A KR 19950003838 A KR19950003838 A KR 19950003838A KR 0160561 B1 KR0160561 B1 KR 0160561B1
- Authority
- KR
- South Korea
- Prior art keywords
- press
- groove
- bearing plate
- dynamic pressure
- ceramic
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/021—Ram heads of special form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
- B28B11/10—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads by using presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/025—Hot pressing, e.g. of ceramic materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/14—Special methods of manufacture; Running-in
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Sliding-Contact Bearings (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
본 발명은, 동압형 유제축받이용 세라믹스제 홈이 붙은 축받이판의 동압홈의 깊이 정밀도가 높고, 탈락입자가 발생하지 않는 축받이판의 가공방법 및 장치를 제공하는 것을 목적으로 하는 것으로서, 그 구성에 있어서, 동압홈(1A),(2A)과 동일한 패턴의 요철을 가진 상부금형(3)과 하부금형(4)에 의해서 세라믹스분말체(5)를 프레스하고, 소성한 후에, 소성품(7)의 동압홈(7A)의 바닥면을 기준으로 이면을 가공하고, 그후 이면을 기준으로 동압홈(7A)의 볼록부를 포함하는 홈이 붙은 평면(7B)을 가공하는 것을 특징으로 하는 방법 및 장치를 실현할 수 있으며, 이로써, 홈바닥을 프레스하므로 세라믹스제 축받이판의 홈바닥면이 평활하고, 유해한 탈락입자의 발생이 없고, 홈깊이 불균일이 적은 효과를 얻을 수 있다.An object of the present invention is to provide a processing method and apparatus for a bearing plate having a high precision of dynamic pressure of a bearing plate with a ceramic-made grooved bearing plate for dynamic pressure emulsion bearings and free of falling particles. In the above, the ceramic powder 5 is pressed and fired by the upper mold 3 and the lower mold 4 having unevenness in the same pattern as the dynamic pressure grooves 1A and 2A, and then fired. The method and apparatus characterized in that the back surface is processed based on the bottom surface of the dynamic pressure groove (7A) of the grooved surface (7B) including the convex portion of the dynamic pressure groove (7A) based on the back surface. Since the groove bottom is pressed, the groove bottom surface of the bearing plate made of ceramics is smooth, no harmful falling particles are generated, and the groove depth non-uniformity can be obtained.
Description
제1도는 본 발명의 제 1 실시예의 세라믹스제 홈이 붙은 축받이판의 제조방법 및 장치의 프레스 공정을 표시한 설명도.BRIEF DESCRIPTION OF THE DRAWINGS Explanatory drawing which shows the manufacturing method of the grooved bearing plate with a ceramic groove | channel, and the press process of the apparatus of 1st Example of this invention.
제2도는 본 발명의 제 1 실시예에 있어서의 프레스품의 단면도.2 is a cross-sectional view of the press product in the first embodiment of the present invention.
제3도는 본 발명의 제 1 실시예에 있어서의 소성품의 단면도.3 is a cross-sectional view of the fired product in the first embodiment of the present invention.
제4도는 본 발명의 제 1 실시예에 있어서의 세라믹스제 홈이 붙은 축받이판 완성품의 단면도.4 is a cross-sectional view of a ceramic bearing plate finished product with a groove made in ceramic according to the first embodiment of the present invention.
제5도는 본 발명의 제 1 실시예에 있어서의 소성품의 이면가공법의 설명도.5 is an explanatory diagram of a back surface processing method of a fired product in the first embodiment of the present invention.
제6도는 본 발명의 제 1 실시예에 있어서의 소성품 홈이 붙은 평면의 가공법 및 설명도.6 is a processing method and an explanatory diagram of a plane with a fired product groove in the first embodiment of the present invention.
제7도는 본 발명의 제 2 실시예에 있어서의 소성품의 이면가공법의 설명도.7 is an explanatory diagram of a back surface processing method of a fired product in a second embodiment of the present invention.
제8도는 세라믹스제 홈이 붙은 축받이판의 평면도.8 is a plan view of a bearing plate with a groove made of ceramics.
제9도는 다른 세라믹스제 홈이 붙은 축받이판의 평면도.9 is a plan view of a bearing plate with a groove made of another ceramic.
제10도는 축받이판의 측면도.10 is a side view of the bearing plate.
제11도는 종래의 세라믹제홈이 붙은 축받이판의 가공방법을 표시한 도면.11 is a view showing a processing method of a bearing plate with a conventional ceramic groove.
제12도는 종래의 세라믹스제 홈이 붙은 축받이판의 가공방법을 표시한 도면.12 is a view showing a conventional method for processing a bearing plate with a groove made of ceramics.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
1,2,8 : 축받이판 1A,2A,7A,8A : 동압홈1,2,8: bearing plate 1A, 2A, 7A, 8A: dynamic pressure groove
3 : 상부금형 4 : 하부금형3: upper mold 4: lower mold
5 : 세라믹스분말체 6 : 프레스품5: ceramic powder 6: press product
7 : 소성품 9,17,21 : 베이스7: plastic products 9,17,21: base
11 : 볼 15 : 압압체11: ball 15: pressing body
16 : 제 1숫돌 20 : 제 2숫돌16: the first grinding wheel 20: the second grinding wheel
24 : 제 3숫돌 25 : 흡인펌프24: third grinding wheel 25: suction pump
최근, 가정용 영상기기나, 사무기기에 사용되는 회전축받이는 고정밀도화하고, 종래의 볼베어링 대신에 동압형 유체축받이가 사용되고 있는 기기가 증가되고 있다. 그 때문에 사용되는 홈이 붙은 축받이 부품의 값싼 가공방법이 과제로 되고 있다. 본 발명은, 세라믹스 재료를 사용한 동압형 유체축받이의 홈이 붙은 축받이 판의 가공방법 및 장치에 관한 것이다.Background Art In recent years, rotating shaft bearings used for home video equipment and office equipment have become more accurate, and more and more devices are being used in which dynamic pressure bearings are used instead of conventional ball bearings. Therefore, a cheap processing method of the grooved bearing part used is becoming a subject. TECHNICAL FIELD This invention relates to the processing method and apparatus of the bearing plate with a groove of the dynamic pressure bearing which uses ceramic material.
종래, 이런 종류의 세라믹스제 홈이 붙은 축받이판은 평판상에 구어굳히고, 그후, 표면에 숏블라스트 또는 샌드블라스트라고 호칭되는 방법으로 가공하고 있었다.Conventionally, a bearing plate with a groove made of ceramic of this kind has been baked and solidified on a flat plate, and then processed on the surface by a method called shot blast or sand blast.
이하, 도면을 참조하면서 상기한 종래의 세라믹스제 홈이 붙은 축받이판의 가공방법 및 장치의 일례에 대해서 설명한다. 제8도 및 제9도는 세라믹스제 홈이 붙은 축받이판이며, 제10도~제12도는 제8도 및 제9도에 표시한 세라믹스제 홈이 붙은 축받이판의 가공방법 및 장치이다.EMBODIMENT OF THE INVENTION Hereinafter, an example of the processing method and apparatus of the said bearing plate with a conventional ceramic groove | channel with reference to drawings is demonstrated. 8 and 9 are bearing plates with ceramic grooves, and FIGS. 10 through 12 are processing methods and apparatuses for bearing plates with ceramic grooves shown in FIGS. 8 and 9.
제8도 및 제9도에 있어서, (1)은 표면에 나선형상 동압홈(1A)을 가진 축받이판, (2)는 표면에 어골상(魚骨狀)동압홈(2A)을 가진 축받이판이다. 동압홈(1A),(2A)의 깊이는 2~30㎛이다.In Figs. 8 and 9, (1) is a bearing plate having a spiral dynamic pressure groove (1A) on the surface, (2) a bearing plate having a gollike dynamic pressure groove (2A) on the surface to be. The depth of dynamic pressure groove 1A, 2A is 2-30 micrometers.
제10도~제12도에 있어서, (1)은 축받이판, (31)은 필름이며, 동압홈(1A),(2A)의 형상은 패턴구멍(31A)을 가진다. (32)는 노즐이며, 모래가루(33)을 내뿜는다.In FIGS. 10-12, (1) is a bearing plate, 31 is a film, and the shape of dynamic pressure groove 1A, 2A has a pattern hole 31A. 32 is a nozzle and blows out sand powder 33.
이상과 같이 구성된 세라믹스제 홈이 붙은 축받이판의 가공방법 및 장치에 대해서, 이하, 그 동작에 대해서 설명한다.The operation and the processing method of the bearing plate with a ceramic groove | channel made as mentioned above are demonstrated below.
먼저, 도시하지 않은 세라믹스분말을 대략 판형상으로 구어굳히고, 양평면을 정밀하게 연마해서 제10도의 축받이판(1)을 만든다. 다음에, 제11도에 표시한 바와 같이, 필요한 동압홈(1A),(2A)의 형상의 패턴구멍(31A)을 가지고, 수지 등으로 이루어진 필름(31)을 축받이판(1)의 표면에 붙이고, 제12도에 표시한 바와 같이, 노즐(32)로부터 미세한 모래가루(33)를 기세좋게 내뿜어서 동압홈(1A),(2A)을 가공한다.First, the ceramic powder (not shown) is baked in a substantially plate shape and hardened, and the bearing plate 1 of FIG. 10 is made by precisely grinding both flat surfaces. Next, as shown in FIG. 11, it has the pattern hole 31A of the shape of required dynamic pressure grooves 1A and 2A, and the film 31 which consists of resin etc. is carried out on the surface of the bearing plate 1, Then, as shown in FIG. As shown in FIG. 12, the fine sand powder 33 is spouted finely from the nozzle 32 to process the dynamic pressure grooves 1A and 2A.
그러나 상기한 바와 같은 구성에서는, 다음과 같은 문제점이 있다.However, in the above configuration, there are the following problems.
즉, 노즐(32)로부터 내뿜는 모래가루(33)의 기세는 불균일에 의해서 동압홈(1A)의 깊이에 불균일이 발생한다. 또, 동압홈(1A)의 바닥면은 종래의 가공법에 의하면, 2~6㎛의 조도(粗度)로 거칠게 되어, 세라믹스의 입자가 탈락하기 쉬운 상태로 되어 있으며, 도시생략한 동압형 유체축받이에 종래의 세라믹스제축받이판을 사용하면, 이들 탈락한 입자가 좁은 축받이 틈새에 물려들어가서 눌어붙음을 발생해서 회전이 정지된다고 하는 사고가 일어나기 쉬웠다.That is, the force of the sand powder 33 blown out from the nozzle 32 is nonuniform and the nonuniformity arises in the depth of the dynamic pressure groove 1A. Moreover, according to the conventional processing method, the bottom surface of the dynamic pressure groove 1A becomes rough with 2-6 micrometers roughness, and it is in the state which the particle | grains of ceramics are easy to fall out, and the dynamic pressure fluid bearing of illustration is abbreviate | omitted. In the case of using the conventional ceramic manufacturing support plate, it is easy to cause an accident that these dropped particles are bitten into the narrow bearing openings, causing seizure and the rotation is stopped.
상기 문제점을 해결하기 위하여 본 발명의 세란믹스제홈이 붙은 축받이판의 가공방법 및 장치는, 필요로 하는 동압홈과 동일한 패턴형상 요철(凹凸)부를 가진 금형으로 세라믹스분말체를 프레스하고, 소성한 후에, 소성품의 동압홈오목면을 기준으로 해서 이면을 가공하고, 그 후 이면을 기준으로 해서 동압홈의 볼록부를 포함하는 평면을 가공하는 것이다.In order to solve the above problems, the method and apparatus for processing a bearing plate with a seranmix groove according to the present invention, after pressing the ceramic powder body with a mold having the same pattern-shaped irregularities as the required dynamic pressure groove, and then firing The back surface is processed on the basis of the dynamic groove recessed surface of the fired product, and then the plane including the convex portion of the dynamic pressure groove is processed on the basis of the back surface.
본 발명은, 상기한 구성에 의해서, 홈바닥면을 금형으로 프레스하기 때문에 표면이 매끈하게 완성되어, 입자의 탈락이 없다. 또, 홈의 오목면을 기준으로 해서 가공하기 때문에 동압홈의 깊이불균일이 발생하지 않는다.In this invention, since the groove bottom surface is pressed with a metal mold | die by the said structure, the surface is smoothly completed and there is no particle fall off. Moreover, since it processes on the concave surface of a groove, the depth nonuniformity of a dynamic pressure groove does not arise.
이하, 본 발명의 일실시예의 세라믹스제 홈이 붙은 축받이판의 가공방법 및 장치에 대해서, 제1도~제6도를 참조하면서 설명한다.Hereinafter, a method and apparatus for processing a bearing plate with a ceramic groove according to one embodiment of the present invention will be described with reference to FIGS. 1 to 6.
제1도~제4도에 있어서, (3)은 상부금형, (4)는 동압홈의 패턴형상요철부를 가진 하부금형, (5)는 세라믹스분말체, (6)은 세라믹스분말체(5)가 압압되어 굳어진 프레스품, (7)은 프레스품(6)의 소성품으로서 동압홈(7A)을 가진다. (7B)는 동압홈의 볼록면을 포함하는 홈이 붙은 평면, (7C)는 이면(裏面)이며, (8)은 소성품(7)에 가공을 실시한 후의 동압홈(8A)을 가진 축받이판이다. 제5도에 있어서, (9)는 베이스로, 핀(9A)을 가지고, 가이드판(10)을 장착하고, 적어도 3개 이상의 볼(11)을 가지고 있다. (12)는 축본체로서, 압압축(13), 스프링(14), 압압체(15)를 회전자재하게 내부에 가지고, 또, 제1숫돌(16)을 압압체(15)에 동축형상으로 일체적으로 가지고 있다. 제6도에 있어서, (17)은 베이스, (18)은 제 2가이드판, (19)는 제 2축본체, (20)은 제 2숫돌이다.1 to 4, (3) is an upper mold, (4) is a lower mold having a pattern-shaped uneven portion of the dynamic groove, (5) is a ceramic powder, (6) is a ceramic powder (5) The press product 7 pressed and hardened has a dynamic pressure groove 7A as a fired product of the press product 6. (7B) is a grooved plane including the convex surface of the dynamic groove, (7C) is the rear surface, (8) bearing plate having a dynamic pressure groove (8A) after processing the plastic product (7) to be. In FIG. 5, 9 is a base, has a pin 9A, mounts the guide plate 10, and has at least 3 or more balls 11. 12 is a shaft body, which has the compression shaft 13, the spring 14, and the pressing body 15 therein, and the first grindstone 16 is coaxially formed on the pressing body 15. Have it all. In Fig. 6, reference numeral 17 denotes a base, 18 denotes a second guide plate, 19 denotes a second shaft body, and 20 denotes a second grinding wheel.
이상과 같이 구성된 세라믹스제 홈이 붙은 축받이판의 가공방법 및 장치에 대해서, 제1도~제6도를 사용해서 그 동작 및 가공방법을 설명한다.The processing method and apparatus of the grooved bearing plate made of ceramic grooves configured as described above will be described with reference to FIGS. 1 to 6.
제1도에 있어서, 세라믹스분말체(5)는, 상부금형(3)와 하부금형(4)에 의해 프레스되고, 패턴형상요철부(4A)에 의해, 필요한 동압홈(예를 들면 제8도, 제9도의 동압홈(1A),(2A) 등)이 형성되어, 제2도에 표시한 프레스품(6)으로 된다. 다음에, 프레스품(6)은, 도시하지 않은 가열로에서 구워져서 굳어지고, 제3도에 표시한 소성품(7)이 된다. 이 소성품은, 도면중에 표시한 바와 같이 약간의 휘어짐이 발생하고 있다. 다음에, 소성품(7)은, 제5도에 표시한 바와 같이 베이스(9)에 의해, 동압홈(7A)의 홈바닥면(오목면)이 볼(11)을 개재해서 지지되어, 핀(9A)에 의해서 회전방지되고, 스프링(14)과 압압체(15)에 의해 이면(7C)의 중앙부근이 압압되고, 이 압압체(15)에 동축형상으로 회전하는 제 1숫돌(16)에 의해 이면(7C)의 바깥둘레부근이 가공된다. 다음에 제6도에 표시된 바와 같이, 소성품(7)은 베이스(17), 제 2가이드판(18)에 의해 이면(7C)이 지지, 고정되고, 제 2축본체(19)에 일체적으로 정착된 제 2숫돌(20)에 의해, 동압홈(7A)의 볼록부를 포함하는 홈이 붙은 평면(7B)이 가공된다. 이와 같이 해서, 제4도에 표시한 축받침판(8)이 완성된다.In FIG. 1, the ceramic powder 5 is pressed by the upper mold 3 and the lower mold 4, and the required dynamic pressure grooves (for example, FIG. 1A, 2A, etc. of FIG. 9 are formed, and it is set as the press product 6 shown in FIG. Next, the press product 6 is baked and hardened in a heating furnace (not shown) to form the fired product 7 shown in FIG. As shown in the figure, this fired product is slightly warped. Next, as shown in FIG. 5, the fired product 7 is supported by the base 9 by the groove bottom surface (concave surface) of the dynamic pressure groove 7A via the ball 11, and pins The 1st grindstone 16 which prevents rotation by 9A, presses the center part of the back surface 7C by the spring 14 and the press body 15, and rotates coaxially with this press body 15. The outer periphery of 7 C of back surface is processed by this. Next, as shown in FIG. 6, the fired product 7 is supported and fixed to the rear surface 7C by the base 17 and the second guide plate 18, and integrally with the second shaft body 19. The grooved flat surface 7B including the convex portion of the dynamic pressure groove 7A is processed by the second grindstone 20 fixed in the shape. In this way, the bearing plate 8 shown in FIG. 4 is completed.
이상과 같이 본 실시예에 의하면, 동압홈(8A)의 홈바닥을, 하부금형(4)의 패턴형상요철부(4A)에서 프레스가공에 의해 형성하기 때문에, 그 표면이 매끈하여, 표면으로부터 유해한 입자의 탈락이 없다. 또, 동압홈(8A)의 홈바닥에 적어도 3개이상의 볼(11)을 맞닿게 하여, 홈바닥기준으로 가공하므로, 홈깊이의 불균일이 적어, 고정밀도로 가공을 행할 수 있다.As described above, according to this embodiment, since the groove bottom of the dynamic pressure groove 8A is formed by press working in the pattern-shaped uneven portion 4A of the lower mold 4, the surface thereof is smooth and harmful from the surface. There is no drop off of the particles. Further, at least three or more balls 11 abut against the groove bottom of the dynamic pressure groove 8A, and are processed on the groove bottom reference, so that the groove depth is less uneven and the processing can be performed with high precision.
이하, 본 발명의 제2의 실시예의 세라믹스제 홈이 붙은 축받이판의 가공방법 및 장치에 대해서 도면을 참조하면서 설명한다.Hereinafter, the processing method and apparatus of the grooved bearing plate made of ceramic according to the second embodiment of the present invention will be described with reference to the drawings.
제7도에 있어서, (21)은 베이스로서 환형상 볼록부(21A)를 가지고 있다. (22)는 제3가이드판, (23)은 제3축본체, (24)는 제3숫돌, (25)는 흡인펌프이다.In FIG. 7, 21 has 21A of annular protrusions as a base. Reference numeral 22 denotes a third guide plate, 23 denotes a third shaft body, 24 denotes a third grindstone, and 25 denotes a suction pump.
제2실시예의 동작에 대해서 설명한다.The operation of the second embodiment will be described.
제2실시예는, 제5도에 표시한 제1실시예와는 소성품(7)의 이면(7C)의 가공방법이 다르며, 나머지는, 제1실시예와 동일하다. 소성품(7)은 베이스(21), 제3가이판(22)에 안내되어서 환형상볼록부(21A)에 의해, 동압홈(7A)의 바닥면이 지지된 상태에서 흡인펌프(25)에 의해 흡인되어서 고정된다. 고정된 소성품(7)의 이면은 (7C), 제3축본체(23)에 장착된 제3숫돌(24)에 의해 평면으로 연마된다.The second embodiment differs from the first embodiment shown in FIG. 5 in the processing method of the back surface 7C of the fired product 7, and the rest is the same as the first embodiment. The fired product 7 is guided to the base 21 and the third guide plate 22 to the suction pump 25 in a state where the bottom surface of the dynamic pressure groove 7A is supported by the annular projection 21A. It is sucked by and fixed. The back surface of the fixed plastic product 7 is polished in plan by 7C and the 3rd grindstone 24 attached to the 3rd shaft main body 23. As shown in FIG.
이상과 같이 소성품(7)의 홈바닥을 환형상볼록부(21A)로 지지하고, 홈바닥기준으로 가공함으로써, 동압홈(7A)의 깊이불균일이 적도록 억제된다.As described above, the groove bottom of the fired product 7 is supported by the annular convex portion 21A and processed according to the groove bottom reference, so that the depth unevenness of the dynamic pressure groove 7A is reduced.
또한, 제5도~제7도에 있어서, 숫돌(16),(20),(24)은, 엔드밀과 같은 절삭공구라도 된다.In addition, in FIGS. 5-7, the grindstones 16, 20, and 24 may be cutting tools like an end mill.
또한, 제5도, 제7도에 있어서, 숫돌(16),(24)이 회전하고 있으나, 숫돌(16),(24)은 회전하지 않고, 소성품(7)이 회전해도 된다.In addition, although the grindstones 16 and 24 are rotating in FIG. 5 and FIG. 7, the grindstones 16 and 24 may not rotate, but the baking goods 7 may rotate.
이상과 같이, 본 발명은, ① 세라믹스분말체를 패턴형상요철부를 가진 금형으로 거의 판형상으로 프레스성형하고, ② 소성한 것을, ③ 동압홈의 홈바닥기준으로 이면을 가공하고, 다음에 ④ 이면을 기준으로 해서 동압홈의 볼록면을 포함한 홈이 붙은 평면을 가공함으로써, 홈깊이의 정밀도가 높고, 홈바닥이 평활하여, 유해한 탈락입자가 발생하지 않는 세라믹스제 홈이 붙은 축받이판을 얻을 수 있다.As described above, in the present invention, ① the ceramic powder is press-formed into a nearly plate shape with a mold having a pattern-shaped uneven portion, ② fired, ③ the back surface is processed on the basis of the groove bottom of the dynamic pressure groove, and then ④ the back surface. By processing the grooved plane including the convex surface of the dynamic groove on the basis of this, it is possible to obtain a bearing plate with ceramic grooves with high groove depth, smooth groove bottom, and free of harmful falling particles. .
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6031287A JPH07242476A (en) | 1994-03-01 | 1994-03-01 | Working method of bearing plate with ceramics groove and device therefor |
JP94-31287 | 1994-03-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950026621A KR950026621A (en) | 1995-10-16 |
KR0160561B1 true KR0160561B1 (en) | 1998-11-16 |
Family
ID=12327099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950003838A KR0160561B1 (en) | 1994-03-01 | 1995-02-27 | Working method of bearing plate with ceramics groove and device therefor |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH07242476A (en) |
KR (1) | KR0160561B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3580577B2 (en) * | 1994-07-29 | 2004-10-27 | 京セラ株式会社 | Ceramic dynamic pressure bearing and method of manufacturing the same |
-
1994
- 1994-03-01 JP JP6031287A patent/JPH07242476A/en active Pending
-
1995
- 1995-02-27 KR KR1019950003838A patent/KR0160561B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR950026621A (en) | 1995-10-16 |
JPH07242476A (en) | 1995-09-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN206998591U (en) | High-precision piece surface grinding polishing mechanism | |
EP1415958A1 (en) | Mold, plate, suction jig, molding metal mold, disassembling/assembling apparatus, and disassembling/assembling method | |
KR0160561B1 (en) | Working method of bearing plate with ceramics groove and device therefor | |
JP3215368B2 (en) | Method of manufacturing indexable tip and indexable tip | |
JP5897028B2 (en) | Full surface finishing press processing / full surface finishing sintered cutting insert and method of manufacturing the cutting insert | |
CN113857344A (en) | Punching die | |
CN111251420B (en) | Forming die and manufacturing method of 3D ceramic terminal backboard | |
CN114161329B (en) | Preparation method of ceramic bond superhard grinding wheel | |
CN101522373B (en) | Method for manufacturing grinding wheel having depressions on grinding surface thereof | |
JP3489427B2 (en) | Forging device and forging method | |
JP3999870B2 (en) | Method for producing metal-rubber composite member | |
CN111185858B (en) | Method for processing high-precision superhard abrasive material integral cutting grinding wheel | |
CN110539208B (en) | Ceramic cover plate processing method and ceramic cover plate | |
CN108422342B (en) | Forming process of diamond roller for dressing grinding wheel and graphite matrix | |
JP2020171972A (en) | Burnishing device and burnishing method | |
CN212706207U (en) | Dustless grinding device that lathe part was used | |
CN220881665U (en) | Quartz glass wafer precision machining device | |
CN210633515U (en) | Die for pressing diamond grinding wheel | |
JP2579384Y2 (en) | Vacuum chuck for polishing | |
CN220179055U (en) | High-speed heavy-load grinding wheel forming device | |
JPH04164835A (en) | Method for boring glass plate | |
JPH03234466A (en) | Working method of spherical body | |
JPH0729299B2 (en) | Method and apparatus for manufacturing resin tablet for semiconductor encapsulation | |
CN115246156A (en) | Alumina ceramic forming and surface treatment method | |
JPH02190251A (en) | Spherical body machining device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20030807 Year of fee payment: 6 |
|
LAPS | Lapse due to unpaid annual fee |