KR100340834B1 - method of manufacturing the cage of a needle roller bearing - Google Patents

method of manufacturing the cage of a needle roller bearing Download PDF

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Publication number
KR100340834B1
KR100340834B1 KR1020000044864A KR20000044864A KR100340834B1 KR 100340834 B1 KR100340834 B1 KR 100340834B1 KR 1020000044864 A KR1020000044864 A KR 1020000044864A KR 20000044864 A KR20000044864 A KR 20000044864A KR 100340834 B1 KR100340834 B1 KR 100340834B1
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KR
South Korea
Prior art keywords
cage
needle roller
outer diameter
needle
manufacturing
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KR1020000044864A
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Korean (ko)
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KR20000063762A (en
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박동주
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박동주
잘만정공 주식회사
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Priority to KR1020000044864A priority Critical patent/KR100340834B1/en
Publication of KR20000063762A publication Critical patent/KR20000063762A/en
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Publication of KR100340834B1 publication Critical patent/KR100340834B1/en

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    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
    • F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
    • F16C33/543—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
    • F16C33/546—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part with a M- or W-shaped cross section
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/44—Needle bearings
    • F16C19/46—Needle bearings with one row or needles
    • F16C19/463—Needle bearings with one row or needles consisting of needle rollers held in a cage, i.e. subunit without race rings
    • 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
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/44—Shaping by deformation without removing material by rolling

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

본 발명은 니들롤러 베어링의 케이지 제조방법에 관한 것으로서, 종래의 케이지를 절삭가공하는 것은 내부의 홈 가공이 너무 어려워 생산성이 상당히 떨어졌고, 롤링가공방식은 소재 둘레에 다수의 챔버공을 먼저 성형한 후 홈부성형을 후공정으로 행하므로 챔버공의 변형됨이 많아서 니들롤러의 조립이 용이하지 못하였다.The present invention relates to a cage manufacturing method of a needle roller bearing, and cutting a conventional cage is very difficult because the internal groove processing is too difficult, the rolling process is formed by first forming a plurality of chamber holes around the material first Since the groove forming is performed in a later step, the assembly of the needle roller was not easy due to the deformation of the chamber hole.

따라서, 본 발명은 일정 치수로 절단된 원통형 케이지 소재(100)를 내/외경롤러금형(200)(300)으로 롤링가공하여 니들롤러 베어링의 케이지로 성형함에 있어서, 상기 원통형으로 절단된 소재(100)를 내/외경롤러금형(200)(300) 사이에 끼워 롤링시켜서 상기 소재(100)에 홈(110a)(110b)과 플랜지 (120)를 절곡 성형하는 공정을 선공정으로 행한 후, 상기 내/외경롤러금형(200)(300) 사이에서 빼낸 소재 (100)의 둘레에 니들롤러(400) 조립용 챔버공(130)을 일정간격으로 형성하는 공정을 후공정으로 행함을 특징으로 하는 제조방법으로서, 이러한 본 발명은 케이지에 형성되는 챔버공의 변형 우려가 없어서 니들롤러의 조립작업이 신속 원활하므로 생산성 향상을 이룰 수 있고, 니들롤러가 종래처럼 잘 빠지지 않아 품질에 대한 신뢰성을 높힐 수 있는 것이다..Therefore, in the present invention, the cylindrical cage material 100 cut to a certain size is rolled into an inner / outer diameter roller mold 200 or 300 to form a cage of a needle roller bearing, and the cylindrical cut material 100 C) between the inner / outer diameter roller molds 200 and 300 to roll and groove the grooves 110a and 110b and the flange 120 in the material 100 in a linear process. The manufacturing method characterized in that the process of forming the needle roller 400 assembling chamber hole 130 at regular intervals around the material 100 taken out between the outer diameter roller molds 200 and 300 by a post process. As the present invention, there is no fear of deformation of the chamber hole formed in the cage, so that the assembly operation of the needle roller is smooth and smooth, thereby improving productivity, and the needle roller does not fall well as in the prior art, thereby increasing the reliability of the quality. ..

Description

니들롤러 베어링의 케이지 제조방법{method of manufacturing the cage of a needle roller bearing}Method of manufacturing the cage of a needle roller bearing

본 발명은 니들롤러 베어링이 원활하게 회전되게 하기 위하여 베어링 내부에 여러개의 니들롤러를 분할하여 유막이나 고속으로 회전할 수 있는 니들롤러 베어링의 케이지 제조방법에 관한 것으로서, 특히 원통형 소재 둘레에 홈과 플랜지 및 다수의 챔버공을 가공할 때 상기 챔버공들 폭이 변형되지 않도록 하므로서 니들롤러의 원활한 조립작업으로 생산성을 높힐 수 있는 니들롤러 베어링의 케이지 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a cage of a needle roller bearing that can rotate at a high speed by oil film or high speed by dividing a plurality of needle rollers in a bearing to smoothly rotate the needle roller bearing. And it relates to a cage manufacturing method of the needle roller bearing that can increase the productivity by smoothly assembling the needle roller while preventing the width of the chamber holes when processing a plurality of chamber holes.

일반적으로, 니들롤러 베어링은 원통형 케이지(cage)의 둘레에 다수의 챔버공을 일정 간격으로 형성한 후 그 챔버공 마다 니들롤러를 장착하고, 그 안팎에 내륜과 외륜을 설치하여 구성된다.In general, a needle roller bearing is formed by forming a plurality of chamber holes around a cylindrical cage at regular intervals, mounting needle rollers for each chamber hole, and installing inner and outer rings inside and outside thereof.

종래에는 상기 니들롤러 베어링의 원통형 케이지를 만들 때 도 1 에서와 같이 주로 두꺼운 원통형 소재로 된 케이지 몸체(10) 외주면의 'A' 부분과 내주면의 'B' 부분을 일일이 절삭 가공하여 홈(11a)(11b)과 플랜지(12)가 형성되게 하였다.Conventionally, when making the cylindrical cage of the needle roller bearing, as shown in Figure 1, the 'A' portion of the outer circumferential surface of the cage body 10 mainly made of a thick cylindrical material, and the 'B' portion of the inner circumferential surface by cutting the groove 11a 11b and the flange 12 were formed.

그런데, 이와 같이 절삭 가공하는 것은 케이지 몸체(10) 내부의 홈(11a) (11b) 가공이 너무 어려워서 생산성이 상당히 떨어짐에 따라 원가상승의 요인이 많고, 특히 아주 얇거나 작은 소형의 케이지는 절삭 가공으로 만들 수가 없는 문제점이 있으며, 합성수지로 만들어진 것은 고속회전에 의한 마찰열이 발생하게 되면 형상이 틀어지고 니들롤러가 쉽게 이탈하여 제 기능을 발휘하지 못하는 등 문제점이 많다.However, this cutting process is too difficult to process the grooves (11a) (11b) in the cage body 10, the productivity is significantly reduced, there is a lot of factors of cost increase, especially very thin or small small cage cutting process There is a problem that can not be made, and made of synthetic resin has a lot of problems, such as when the frictional heat generated by the high-speed rotation is distorted and the needle roller is easily separated and does not function properly.

또한, 상기와 같이 케이지를 절삭 가공하여 형성하면 자체의 강도가 떨어지고, 조직이 조밀화되지 않아 고속회전하는 작업환경에서는 케이지 조직이 쉽게 피로해지면서 마모와 변형이 쉽게 이루어지므로 이를 위해서는 고가의 재료를 사용할 수 밖에 없었으며, 이는 결국 원가 상승의 요인으로 작용하여 경쟁력이 떨어지는 문제점이 있다.그리고, 원통형 소재를 롤링가공하여 케이지로 만들기 위해 개발된 것으로서 일본 실개소59-140041호의 리테이너 성형장치가 있는데, 이는 원통형 소재의 둘레에 미리 길다란 다수개의 구멍(다공)을 먼저 선공정으로 행한 후 다공이 뚫려있는 소재 중앙에 요홈의 소경부를 성형하는 공정을 후공정으로 행하는 것이다.그런데, 상기와 같이 원통형 소재에 다공을 먼저 행한 후 요홈의 소경부를 후공정으로 행하면 원통 둘레의 다공들 폭이 어느 것은 더 넓어지고 어느 것은 더 좁아지는 등 변형률이 심하여 니들롤러의 조립이 원활하지 못하여 생산성이 떨어지고, 사용중 니들롤러가 쉽게 빠지게 되어 품질에 대한 신뢰성을 잃게 되는 문제점이 있다.In addition, if the cage is formed by cutting as described above, the strength of the cage is lowered and the structure is not densified, so in the high-speed rotating working environment, the cage is easily fatigued and easily worn and deformed. There is a problem that this is a factor of the cost increase, which is inferior in competitiveness, and was developed to roll a cylindrical material into a cage, and there is a retainer forming apparatus of Japanese Patent Application No. 59-140041. In the post process, a plurality of long holes (pores) around the cylindrical material are first performed in a preliminary process, and then a small diameter portion of the groove is formed in a post process in the center of the material where the pores are perforated. First, and then the small diameter of the groove The width of the pores is wider, which one is wider and the other narrower, so that the deformation of the needle roller is not smooth, the productivity is poor, there is a problem that the needle roller is easily taken out during use and loses the reliability of the quality.

본 발명은 상기한 종래의 문제점을 해결하기 위하여 발명된 것으로서, 본 발명의 목적은 원통형 케이지 소재를 내/외경롤러금형으로 가공하여 니들롤러 베어링의 케이지를 만들 때 소재 둘레에 형성되는 다수의 챔버공들 폭이 변형되지 않고 균일한 정밀도로 형성되게 하므로서 니들롤러의 원활한 조립작업으로 생산성을 높히고 품질에 대한 신뢰성을 높힐 수 있는 니들롤러 베어링의 케이지 제조방법을 제공하는데 있다.The present invention has been invented to solve the above-mentioned problems, the object of the present invention is to process a plurality of chamber holes formed around the material when forming a cage of the needle roller bearing by processing the cylindrical cage material into an inner / outer diameter roller mold It is to provide a cage manufacturing method of the needle roller bearing that can increase the productivity and the reliability of the quality by smoothly assembling the needle roller while forming the width of the needle without uniform deformation.

도 1 은 절삭 가공으로 만들어진 종래 케이지 구조를 보이기 위한 횡단면도1 is a cross-sectional view for showing a conventional cage structure made by cutting

도 2a 내지 도 2d 는 본 발명의 장치로 니들롤러 케이지를 만드는 과정을 공정별로 예시한 횡단면도Figures 2a to 2d is a cross-sectional view illustrating the process of making a needle roller cage with the device of the present invention step by step

도 3 은 본 발명의 롤링가공으로 형성된 케이지 구조를 예시한 횡단면도Figure 3 is a cross-sectional view illustrating a cage structure formed by the rolling process of the present invention

도 4 는 본 발명에 의해 생산된 니들롤러 케이지의 사시도4 is a perspective view of a needle roller cage produced by the present invention;

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

100 : 케이지 소재 110a,110b: 홈100: cage material 110a, 110b: groove

140 : 챔버공 200 : 내경롤러금형140: chamber hole 200: inner diameter roller mold

210 : 홈부 220 : 돌부210: groove 220: protrusion

230 : 회전축 300 : 외경롤러금형230: rotating shaft 300: outer diameter roller mold

310 : 돌부 320 : 홈부310: protrusion 320: groove

400 : 니들롤러400: Needle Roller

이하, 본 발명의 목적을 효과적으로 달성할 수 있는 가장 바람직한 실시예를 첨부한 도면에 의해 상세히 설명하면 다음과 같다.Hereinafter, described in detail by the accompanying drawings the most preferred embodiment that can effectively achieve the object of the present invention is as follows.

본 발명은 소정두께로 성형된 원형 파이프를 일정 치수로 절단하여 케이지 소재(100)를 만든 다음 그 케이지 소재(100)를 롤링 가공하여 내/외주면 홈(110a) (110b)과 양 측단의 플랜지(120)를 절곡 형성하는 공정을 선행한 후 상기 소재 (100)의 둘레에 니들롤러(400) 조립용 챔버공(140) 다수개를 형성하는 공정을 후공정으로 행하는 것을 특징으로 한다.According to the present invention, a circular pipe formed to a predetermined thickness is cut to a predetermined dimension to make a cage material 100, and then the cage material 100 is rolled to process the inner / outer peripheral grooves 110a and 110b and flanges at both ends ( The process of forming the plurality of needle rollers 400 for assembling chamber holes 140 around the material 100 is performed in a subsequent step after the step of forming the bending part 120.

상기한 본 발명의 케이지를 성형하기 위한 제조장치는 소정 두께의 길다란파이프를 일정 치수로 절단하여 된 케이지 소재(100)의 내경을 성형하기 위해 중앙에 홈부(210)가 구비되고 양쪽에 돌부(220)가 구비되는 내경롤러금형(200)과; 외경을 성형하기 위해 중앙에는 상기 홈부(210)와 상응하는 돌부(310)가 구비되고 그 양쪽에 홈부(320)가 형성된 외경롤러금형(300)으로 구성되며, 상기 내경롤러금형 (200)은 외경롤러금형(300)의 외주면을 따라 회전된다.The manufacturing apparatus for forming the cage of the present invention is provided with a groove portion 210 in the center to form the inner diameter of the cage material 100 by cutting the elongated pipe of a predetermined thickness to a predetermined dimension and the protrusions 220 on both sides. Inside diameter roller mold 200 is provided; In order to form the outer diameter, the groove portion 210 and the protrusion 310 corresponding to each other are provided, and the outer diameter roller mold 300 is formed with the groove portion 320 formed on both sides thereof, and the inner diameter roller mold 200 has an outer diameter. It is rotated along the outer circumferential surface of the roller mold 300.

이러한 제조장치에 의해 본 발명의 케이지를 성형하는 방법을 공정별로 상세하게 설명하면 다음과 같다.The method of molding the cage of the present invention by such a manufacturing apparatus will be described in detail for each process as follows.

제 1 공정 (케이지 소재 준비공정) : 소정 두께의 원형 파이프를 일정 치수로 절단하여 원통형의 케이지 소재(100)를 대량으로 준비한다.First step (cage material preparation step): A cylindrical pipe material 100 is prepared in large quantities by cutting a circular pipe having a predetermined thickness into a predetermined dimension.

제 2 공정 (롤링 공정) : 그 후 도 2a 와 같이 내경롤러금형(200)에 상기 케이지 소재(100)를 끼운 후 내경롤러금형(200)과 외경롤러금형(300)을 서로 접면시키고 내경롤러금형(200)의 회전축(130)에 동력을 가하면서 도 2b 와 같이 프레싱하면 케이지 소재(100)는 도 2c 와 같이 내경롤러금형(200)의 회전력에 의해 홈부 (210)와 돌부(220)에 눌리면서 서서히 절곡되며, 내경롤러금형(200)이 외경롤러금형(300) 외주면의 돌부(310) 및 홈부(320)를 따라 점차 회전됨에 따라 케이지 소재 (100) 전체가 케이지의 형태로 손쉽게 절곡 성형된다.Second process (rolling process): After inserting the cage material 100 into the inner diameter roller mold 200, as shown in Figure 2a and then the inner diameter roller mold 200 and the outer diameter roller mold 300 are in contact with each other and the inner diameter roller mold When pressing as shown in FIG. 2B while applying power to the rotation shaft 130 of the 200, the cage material 100 is pressed by the groove 210 and the protrusion 220 by the rotational force of the inner diameter roller die 200 as shown in FIG. 2C. Slowly bent, as the inner diameter roller mold 200 is gradually rotated along the protrusion 310 and the groove 320 of the outer diameter roller mold 300, the entire cage material 100 is easily bent in the form of a cage.

제 3 공정 (케이지 본체의 탈거공정) : 상기 공정에 의해 케이지 소재(100)의 성형이 완료되면 도 2d 와 같이 내경롤러금형(200)과 외경롤러금형(300)을 서로이격시킨 상태에서 케이지 소재(100)를 내경롤러금형(200)으로 부터 약간 들어 올리면 케이지 소재(100)의 내경이 내경롤러금형(200)의 구경보다 더 크므로 내경롤러금형(200)에 전혀 간섭을 받지 않고 케이지 소재(100)를 빼낼 수가 있다.Third process (removal of cage body): When the molding of the cage material 100 is completed by the above process, the cage material in a state in which the inner diameter roller mold 200 and the outer diameter roller mold 300 are spaced apart from each other as shown in FIG. 2D. Lifting the 100 from the inner diameter roller mold 200 slightly, the inner diameter of the cage material 100 is larger than the diameter of the inner diameter roller mold 200, so that the cage material is not affected at all by the inner diameter roller mold 200 at all. 100) can be taken out.

제 4 공정 (챔버공 성형공정) : 상기 공정에 의해 성형된 케이지 소재(100)의 둘레를 따라 일정 간격으로 니들롤러(400)가 들어갈 수 있는 챔버공(130) 다수개를 펀칭하여 형성하면 본 발명의 케이지가 만들어지는 것이며, 이와 같이 완성된 케이지의 챔버공(130) 마다 니들롤러(400)를 끼워 장착하고 내륜과 외륜(도면에 미도시)을 조립하면 니들롤러 베어링이 완성되는 것이다.4th process (chamber hole forming process): When formed by punching a plurality of chamber holes 130 into which the needle roller 400 can enter at a predetermined interval along the circumference of the cage material 100 formed by the above process The cage of the invention is made, and the needle roller bearing is completed by inserting the needle roller 400 to each chamber hole 130 of the completed cage and assembling the inner ring and the outer ring (not shown).

이러한 본 발명은 원형 파이프를 절단한 케이지 소재(100)를 내/외경 롤링금형(200)(300)으로 절곡 성형하는 것이므로 두께가 얇은 파이프를 소재로 하여 케이지를 만들기가 용이하며, 작은 사이즈의 내경롤러금형(200)를 이용하여 크기가 아주 작은 소형 케이지도 손쉽게 만들 수 있다.Since the present invention is to be formed by bending the cage material 100, the circular pipe cut into the inner / outer diameter rolling mold (200, 300), it is easy to make a cage with a thin pipe material, the inner diameter of a small size By using the roller mold 200, a very small size small cage can be easily made.

이상에서 상술한 바와 같이 본 발명에 의해 생산되는 케이지는 종래처럼 홈부위를 절삭하여 형성하는 어려운 가공을 피하고 원형 파이프로된 소재를 롤링 소성하여 성형하는 것이므로 작업성이 좋아 아주 얇은 두께나 작은 사이즈로 손쉽게 만들 수 있는 등 생산성을 향상시킬 수 있어 케이지의 생산원가 절감 효과와 더불어 고품질의 제품을 보다 저렴한 가격에 제공할 수 있는 효과가 있는 것이다.아울러 원통형 소재에 홈과 플랜지를 먼저 롤링가공하여 성형하는 공정을 선행한 후 챔버공 성형공정을 후공정으로 행하는 것이므로 챔버공이 변형될 우려가 없어서 니들롤러의 조립작업이 신속 원활하여 생산성 향상을 이룰 수 있고, 니들롤러가 종래처럼 잘 빠지지 않아 품질에 대한 신뢰성을 높힐 수 있는 것이다.As described above, the cage produced according to the present invention avoids the difficult process of cutting grooves and forms rolling materials by rolling and firing circular pipes, so that the workability is very thin and small. Productivity can be improved by making it easy, and the cost of producing cages can be reduced, and high quality products can be provided at a lower price. Since the chamber hole forming process is performed after the process ahead of time, there is no fear of deforming the chamber hole, so the assembly work of the needle roller can be made smoothly and the productivity can be improved quickly. You can raise.

Claims (3)

삭제delete 삭제delete 일정 치수로 절단된 원통형 케이지 소재(100)를 내/외경롤러금형(200)(300)으로 롤링가공하여 니들롤러 베어링의 케이지로 성형함에 있어서,In rolling the cylindrical cage material 100 cut to a certain dimension into the inner / outer diameter roller molds 200 and 300 to form a cage of a needle roller bearing, 상기 원통형으로 절단된 소재(100)를 내/외경롤러금형(200)(300) 사이에 끼워 롤링시켜서 상기 소재(100)에 홈(110a)(110b)과 플랜지 (120)를 절곡 성형하는 공정을 선공정으로 행한 후,A process of bending the grooves 110a and 110b and the flange 120 in the material 100 by rolling the cylindrical material cut between the inner / outer diameter roller molds 200 and 300. After doing it in advance process, 상기 내/외경롤러금형(200)(300) 사이에서 빼낸 소재(100)의 둘레에 니들롤러(400) 조립용 챔버공(130)을 일정간격으로 형성하는 공정을 후공정으로 행함을 특징으로 하는 니들롤러 베어링의 케이지 제조방법.The process of forming the needle hole 400 assembling chamber hole 130 at regular intervals around the material 100 taken out between the inner and outer roller molds 200 and 300 is carried out in a later step. Method for manufacturing cage of needle roller bearings.
KR1020000044864A 2000-08-02 2000-08-02 method of manufacturing the cage of a needle roller bearing KR100340834B1 (en)

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