KR20110000932A - Forming method of bearing motor case - Google Patents

Forming method of bearing motor case Download PDF

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KR20110000932A
KR20110000932A KR1020090058270A KR20090058270A KR20110000932A KR 20110000932 A KR20110000932 A KR 20110000932A KR 1020090058270 A KR1020090058270 A KR 1020090058270A KR 20090058270 A KR20090058270 A KR 20090058270A KR 20110000932 A KR20110000932 A KR 20110000932A
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South Korea
Prior art keywords
punch
drawing step
bearing part
metal case
forming
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KR1020090058270A
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Korean (ko)
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KR101028752B1 (en
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정경현
이형국
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(주)태화기업
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/14—Casings; Enclosures; Supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/001—Shaping combined with punching, e.g. stamping and perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/10—Making other particular articles parts of bearings; sleeves; valve seats or the like
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

PURPOSE: A method for forming the bearing part of a motor case is provided to improve the productivity of products by continuously implementing several steps of drawing processes. CONSTITUTION: A plurality of disk shaped metal plates is serially supplied to a forming unit. The metal plates are beaten to obtain a cylindrical metal case. A deep drawing process is implemented. The diameter of the metal case is reduced and the length of the metal case is increased. The upper center part of the metal case is concaved by a top drawing process. The upper center part of the metal case is concaved by a lower drawing process.

Description

모터케이스의 베어링부 성형방법{forming method of bearing motor case}Forming method of bearing motor case

본 발명은 모터케이스의 베어링부 성형방법에 관한 것으로, 특히, 연속적인 공정에 의해 생산성이 향상되고 다단계의 드로잉 공정에 의해 모터케이스의 베어링부의 편평도가 향상되어 품질이 개선된 모터케이스의 베어링부 성형방법에 관한 것이다.The present invention relates to a method for forming a bearing part of a motor case, and in particular, to improve the productivity by a continuous process and to improve the flatness of the bearing part of the motor case by a multi-step drawing process, thereby improving the quality of the bearing part of the motor case. It is about a method.

종래에는 모터케이스 특히 ABS 케이스의 베어링부를 제작하는 방법에 있어서, 원통형의 파이프를 절단하고 용접하여 제작하거나, 사출성형, 프레스금형, 단조압착에 의해 모터케이스를 제작하였다. 그러나 이러한 방법은 파이프와 같은 소재가 고가로 모터케이스의 제작단가가 상승하고, 절단부 및 이음매 부분이 매끄럽지 못할뿐만 아니라 버려지는 부분이 많아서 재료의 낭비가 있게 된다.Conventionally, in a method of manufacturing a bearing part of a motor case, particularly an ABS case, a cylindrical pipe is cut and welded, or a motor case is manufactured by injection molding, press molding, or forging crimping. However, this method increases the manufacturing cost of the motor case due to the high cost of materials such as pipes, not only smooth cuts and joints, but also a lot of discarded parts, resulting in waste of materials.

우선 파이프를 절단하여 굽힘가공 후 용접공정에 의해 모터케이스를 제조하는 경우에는 용접공정에 의해 제작시간이 증대하고, 굽힘공정시 모서리 부분이 매끄럽지 못하며, 굽힘 부분에 재료가 늘어나게 되어 균열이나 수축현상이 발생하여 휨이나 절단의 염려가 있으며, 또한 용접부분이 매끄럽지 못하고, 대칭이 잘 맞지 않아 모터가 이탈되는 경향이 있어 고장의 원인이 되고 있다.First, if the motor case is manufactured by welding after bending the pipe, the manufacturing time is increased by the welding process, the edges are not smooth during the bending process, and the material increases in the bending part, so that cracks and shrinkage occur. There is a risk of bending and cutting, and the welded portion is not smooth, the symmetry is not well matched, the motor tends to come off, causing failure.

또한 사출성형장치, 프레스금형 또는 단조압착에 의해 모터케이스를 제조하는 경우에는 끝단부가 편평하지 않고 내측으로 경사지거나 단면이 울퉁불퉁하여 전체적으로 편평도가 저하되는 문제점이 있다. 이는 진동모터의 수명과 진동력을 위해 베어링 및 회전자가 편심 회전되는 동안 유동하지 않고 견고하게 고정되게 하는 것이 중요한데 편평도가 불량한 경우에는 베어링의 마모가 빨리 진행되고, 샤프트 내에서 유동하게 되어 진동모터의 수명과 진동력에 심각한 지장을 초래하게 된다.In addition, when manufacturing a motor case by an injection molding apparatus, a press mold or forging crimping, there is a problem in that the end portion is not flat but is inclined inward or the cross section is uneven so that the overall flatness is reduced. It is important for the bearing and rotor to be firmly fixed instead of flowing during the eccentric rotation for the life and vibration force of the vibration motor. In case of poor flatness, wear of the bearing proceeds quickly and flows in the shaft. It will seriously affect the life and vibration force.

또한 상기의 모터케이스 제조방법은 각 단계별 공정이 연속적으로 이루어지지 않고 추후 공정을 수행하기 위해선 재료를 그 공정에 해당되는 설비로 다시 운반하고 장착하는 등의 번거로움이 있어 제조단가의 상승, 생산효율의 저하로 비경제적인 문제점이 있다.In addition, the method of manufacturing the motor case does not have to be continuously performed for each step, and in order to carry out the subsequent process, it is cumbersome to transport and mount the material back to the facility corresponding to the process, thereby increasing the manufacturing cost and increasing production efficiency. There is an uneconomical problem due to the fall of.

본 발명은 상기 문제점을 해결하기 위한 것으로서, 연속적인 공정에 의해 생산성이 향상되고 다단계의 드로잉 공정에 의해 모터케이스의 베어링부의 편평도가 향상되어 품질이 개선된 모터케이스의 베어링부 성형방법의 제공을 그 목적으로 한다.The present invention is to solve the above problems, the productivity is improved by a continuous process, and the flatness of the bearing portion of the motor case is improved by a multi-step drawing process to provide a bearing part forming method of the motor case is improved quality The purpose.

상기 목적을 달성하기 위해 본 발명은, 다수개의 원판형의 금속판재를 상하부 펀치가 형성된 포밍기에 일렬로 제공하는 재료공급단계와; 상부 펀치가 하강하여 상기 금속판재를 타격하여 하측은 열리고 상단부는 볼록한 원통형의 금속케이스를 제조하는 드로잉단계와; 상기 상부 펀치에 연속되어 형성된 딥 펀치가 하강하여 상기 드로잉단계를 거친 금속케이스에 모터케이스의 베어링부 성형을 위해, 상기 금속케이스의 직경을 줄이면서 길이를 늘이는 딥드로잉단계와; 상기 딥 펀치에 연속되어 형성된 탑 펀치가 하강하여 상기 딥드로잉단계를 거친 금속케이스에 베어링부 성형을 위해 상단부 중심을 타격하여 아래로 오목하게 제조하는 탑드로잉단계와; 상기 탑 펀치에 연속되어 형성된 하부 펀치가 상승하여 상기 탑드로잉단계를 거친 금속케이스에 베어링부 성형을 위해 상단부 중심을 타격하여 위로 오목하게 제조하는 하부 드로잉단계와; 상기 하부 펀치에 연속되어 형성된 일련의 제2 상부 및 하부 펀치에 의해 상기 베어링부를 평편하게 하고 외경을 다듬어 정형화하는 여러 단계의 마무리 드로잉단계;를 포함하여 이루어지는 것을 특징으로 하는 모터케 이스의 베어링부 성형방법을 기술적 요지로 한다.In order to achieve the above object, the present invention includes a material supplying step of providing a plurality of disk-shaped metal sheet in a line to the forming machine formed with the upper and lower punches; A drawing step of manufacturing a cylindrical metal case in which an upper punch is lowered to hit the metal plate and a lower side is opened and an upper end is convex; A deep drawing step of increasing the length while reducing the diameter of the metal case for forming a bearing part of the motor case to the metal case which has been passed through the drawing step by descending the deep punch formed successively to the upper punch; A top drawing step of manufacturing a concave downward by hitting the center of the upper end for forming a bearing part to the metal case which has passed through the deep drawing step by descending the top punch which is continuously formed in the deep punch; A lower drawing step of manufacturing a concave upward by hitting the center of the upper end for forming a bearing part on the metal case which has undergone the top drawing step by raising the lower punch which is continuously formed on the top punch; Forming a bearing portion of the motor case comprising a plurality of finishing drawing steps of flattening the bearing portion and shaping and shaping the outer diameter by a series of second upper and lower punches formed successively to the lower punch; Make the method a technical point.

또한, 각 드로잉단계로의 재료의 운반을 위해서 각 펀치가 상측 또는 하측으로 물러날때 재료의 양측에서 재료를 물어 그 다음 드로잉단계로 운반되도록 하여 각 드로잉공정이 연속적으로 이루어질 수 있도록 하는 것이 바람직하다.In addition, it is desirable to carry out each drawing process continuously by burying the material from both sides of the material and transporting it to the next drawing step when each punch is withdrawn to the upper side or the lower side for conveying the material to each drawing step.

상기 구성에 의해 본 발명은 모터케이스 특히 모터케이스의 베어링부의 성형을 위해서 여러 단계의 드로잉공정이 연속적으로 수행되게 되므로 제품의 생산성이 향상되어 제조단가가 절감되는 효과가 있다.According to the above configuration, since the drawing process of the various steps is continuously performed for forming the bearing part of the motor case, in particular, the motor case, the productivity of the product is improved and the manufacturing cost is reduced.

또한, 여러 단계의 드로잉공정에 의해 점차적으로 완제품에 이르도록 하여 재료의 연성과 같은 물성에 최대한 무리를 주지 않는 범위 내에서 소정 형태 및 치수로의 가공이 이루어지게 되어 편평도를 비롯한 제품의 품질이 향상되어 모터의 베어링 장착이 정밀하게 이루어져 모터의 수명과 진동력을 일정하게 유지시킬 수 있는 효과가 있다.In addition, by several stages of the drawing process gradually to the finished product is processed to a predetermined shape and dimensions within the range that does not give as much as possible to the physical properties such as ductility of the material to improve the quality of products including flatness As the bearing of the motor is precisely mounted, the life and vibration force of the motor can be kept constant.

본 발명은 모터케이스 특히 ABS 모터케이스에 있어서 베어링부의 성형을 위한 방법에 관한 것으로서, 상부다이와 하부다이가 상하운동하며 일련의 연속적인 공정의 드로잉공정에 의해 원하는 크기 및 형상을 이루고, 이음매가 없으며 정확한 치수를 가지는 모터케이스에 베어링이 고정되는 베어링부를 성형하고자 하는 것이다.The present invention relates to a method for forming a bearing part in a motor case, in particular an ABS motor case, wherein the upper die and the lower die move up and down to achieve a desired size and shape by a series of continuous drawing processes. It is intended to form a bearing portion in which a bearing is fixed to a motor case having dimensions.

즉, 본 발명은 모터케이스의 베어링부를 성형하기 위한 장치들은 전체적으로 상부프레임과 하부프레임에 결합되며, 정확한 치수로 가공된 상부 또는 하부 펀치가 탄성적으로 상측 또는 하측으로 움직이면서 재료에 일정압력이 가해지면서 소정 형태로의 성형이 이루어지며, 각 단계별로는 재료의 연성에 무리가 가지 않도록 드로잉과정이 단계적으로 이루어지도록 한다.That is, the present invention is a device for forming the bearing portion of the motor case is coupled to the upper frame and the lower frame as a whole, while a predetermined pressure is applied to the material while the upper or lower punch machined to the correct dimensions move up or down elastically Molding is made in a predetermined form, and the drawing process is performed step by step so that the ductility of the material does not overdo each step.

이하에서는 첨부된 도면을 참조하여 본 발명에 대해 상세히 설명하고자 한다.Hereinafter, with reference to the accompanying drawings will be described in detail for the present invention.

먼저, 모터케이스의 재료를 이루는 금속을 일정 크기의 원판형으로 절삭가공하여 일정방향으로 움직이는 가이드 상면에 각 드로잉단계가 이루어질 수 있도록 일정 간격으로 이송되도록 한다.First, the metal constituting the material of the motor case is cut into a disk of a predetermined size to be transported at regular intervals so that each drawing step can be made on the upper surface of the guide moving in a predetermined direction.

이렇게 이송된 재료는 첫번째 드로잉단계에 의해 상부 펀치가 하강하여 상기 재료를 상측에서 타격하여 하측은 열리고 상단부는 볼록한 원통형의 금속케이스를 제조하도록 한다.The material thus conveyed is manufactured by the first drawing step to lower the upper punch and strike the material from the upper side to make the cylindrical metal case with the lower side open and the upper end convex.

상기 첫번째 드로잉단계가 완료된 금속케이스는 상기 상부 펀치가 상측으로 물러날 때, 상기 상부 펀치에 수직되게 형성되어 금속케이스의 양측에서 재료를 물어 들어올릴 수 있는 운반장치에 의해 그 다음 드로잉단계로 운반되도록 하여, 상,하부 프레임이 고정되어 생산설비의 제작 및 작동이 용이하도록 한다. 이러한 방식의 재료의 운반은 다음 드로잉단계로의 공정이 연속적으로 이루어지도록 하는 것이다.The metal case in which the first drawing step is completed is transported to the next drawing step by a conveying device which is formed perpendicular to the upper punch when the upper punch is withdrawn to the upper side and can lift material from both sides of the metal case. The upper and lower frames are fixed to facilitate the manufacture and operation of the production equipment. The transport of the material in this way is such that the process to the next drawing step is carried out continuously.

그 다음 운반된 금속케이스에 상기 상부 펀치에 연속되어 형성된 딥 펀치가 하강하여 연속적인 두번째 드로잉단계가 이루어지도록 하며, 상기 딥 펀치의 하강 에 의해 상기 금속케이스는 직경이 줄어들면서 길이를 늘여지는 딥드로잉단계가 이루어지게 된다. 이러한 형상은 모터케이스의 베어링이 수용되고 고정될 수 있도록 베어링부의 성형을 위한 것이다.Then, the deep punch formed in succession to the upper punch is lowered in the transported metal case so that a second continuous drawing step is performed. The lower case of the metal case decreases in diameter, thereby increasing the length of the deep drawing. Steps are taken. This shape is for shaping the bearing portion so that the bearing of the motor case can be accommodated and fixed.

그리고, 상기 딥드로잉단계가 완료되면 상기와 같이 다시 재료의 측면에서 재료를 물어 그 다음 드로잉단계로 재료가 운반되도록 하여, 세번째 드로잉단계가 이루어지게 된다. 상기 세번째 드로잉단계는 탑드로잉단계로써, 상기 딥펀치에 연속되어 형성된 탑 펀치가 하강하여 상기 딥드로잉단계를 거친 금속케이스에 베어링부 성형을 위해 상단부 중심을 타격하여 아래로 오목하게 성형하는 것이다.Then, when the deep drawing step is completed, the third drawing step is made so that the material is transported to the next drawing step as the material is queried again from the side of the material as described above. The third drawing step is a top drawing step, in which a top punch continuously formed in the deep punch is lowered to form a concave downward by hitting the center of the upper end for forming a bearing part on the metal case that has undergone the deep drawing step.

그 다음엔 상기 탑펀치에 연속되어 형성된 하부 펀치가 상승하여, 상기 탑드로잉단계를 거친 금속케이스에 베어링부 성형을 위해 상단부 중심을 아래쪽에서 타격하여 모터의 베어링이 고정될 수 있도록 위로 오목하게 성형하는 것이다.Then, the lower punch formed in succession to the top punch is raised, and the upper punch is formed to be concave up so that the bearing of the motor can be fixed by hitting the center of the upper end from below to form the bearing part. .

그리고, 상기 하부 펀치에 연속되어 형성된 일련의 제2 상부 및 하부 펀치에 의해 상기 베어링부를 평편하게 하고 외경을 다듬어 정형화하는 여러 단계의 마무리 드로잉단계가 이루어지도록 하여, 설계치와 동일한 정확한 형태 및 크기를 가지는 베어링부의 성형이 점차적으로 이루어지도록 한다.Then, a series of finishing drawing steps for flattening the bearing part and shaping and shaping the outer diameter are performed by a series of second upper and lower punches continuously formed on the lower punch, so that the same shape and size as the design value are achieved. The molding of the bearing part is made gradually.

이와 같이 본 발명에 따른 모터케이스 특히 모터케이스의 베어링부의 성형을 위해서는 여러 단계의 드로잉공정이 수행되게 되며, 이러한 드로잉공정을 위해서 각 장치들은 동시에 움직이면서 각 드로잉공정이 끝나면 자동적으로 다음 드로잉공정으로 재료의 운반이 이루어지도록 하여 제품이 신속하게 생산될 수 있다.As such, in order to form the bearing part of the motor case, in particular, the motor case according to the present invention, the drawing process of several stages is performed. For the drawing process, each device moves simultaneously, and after each drawing process, the material is automatically moved to the next drawing process. The transport can be done so that the product can be produced quickly.

또한, 이러한 여러 단계의 드로잉공정은 재료의 연성과 같은 물성에 최대한 무리를 주지 않는 범위 내에서 소정 형태 및 치수로의 가공이 이루어지도록 하는 것으로, 제품의 불량률을 줄일 수 있게 되는 것이다. 여기에서 재료의 종류 및 모터케이스의 형상에 따라 각 드로잉공정의 횟수를 더 늘릴 수도 있다.In addition, the drawing process of the various steps is to be processed to a predetermined shape and dimensions within the range that does not give as much as possible to the physical properties such as the ductility of the material, it is possible to reduce the defective rate of the product. In this case, the number of drawing processes may be further increased according to the type of material and the shape of the motor case.

도 1 - 본 발명에 따른 각 드로잉단계에 따른 모터케이스의 형상을 나타낸 단면도.1-a cross-sectional view showing the shape of the motor case according to each drawing step according to the present invention.

도 2 - 본 발명에 따른 각 드로잉단계에 따른 모터케이스의 형상을 나타낸 사시도.Figure 2-a perspective view showing the shape of the motor case according to each drawing step according to the present invention.

Claims (2)

다수개의 원판형의 금속판재를 상하부 펀치가 형성된 포밍기에 일렬로 제공하는 재료공급단계와;A material supplying step of providing a plurality of disk-shaped metal sheets in a line to a forming machine having upper and lower punches formed thereon; 상부 펀치가 하강하여 상기 금속판재를 타격하여 하측은 열리고 상단부는 볼록한 원통형의 금속케이스를 제조하는 드로잉단계와;A drawing step of manufacturing a cylindrical metal case in which an upper punch is lowered to hit the metal plate and a lower side is opened and an upper end is convex; 상기 상부 펀치에 연속되어 형성된 딥 펀치가 하강하여 상기 드로잉단계를 거친 금속케이스에 모터케이스의 베어링부 성형을 위해, 상기 금속케이스의 직경을 줄이면서 길이를 늘이는 딥드로잉단계와;A deep drawing step of increasing the length while reducing the diameter of the metal case for forming a bearing part of the motor case to the metal case which has been passed through the drawing step by descending the deep punch formed successively to the upper punch; 상기 딥 펀치에 연속되어 형성된 탑 펀치가 하강하여 상기 딥드로잉단계를 거친 금속케이스에 베어링부 성형을 위해 상단부 중심을 타격하여 아래로 오목하게 제조하는 탑드로잉단계와;A top drawing step of manufacturing a concave downward by hitting the center of the upper end for forming a bearing part to the metal case which has passed through the deep drawing step by descending the top punch which is continuously formed in the deep punch; 상기 탑 펀치에 연속되어 형성된 하부 펀치가 상승하여 상기 탑드로잉단계를 거친 금속케이스에 베어링부 성형을 위해 상단부 중심을 타격하여 위로 오목하게 제조하는 하부 드로잉단계와;A lower drawing step of manufacturing a concave upward by hitting the center of the upper end for forming a bearing part on the metal case which has undergone the top drawing step by raising the lower punch which is continuously formed on the top punch; 상기 하부 펀치에 연속되어 형성된 일련의 제2 상부 및 하부 펀치에 의해 상기 베어링부를 평편하게 하고 외경을 다듬어 정형화하는 여러 단계의 마무리 드로잉단계;를 포함하여 이루어지는 것을 특징으로 하는 모터케이스의 베어링부 성형방법.And a plurality of finishing drawing steps for flattening the bearing part and shaping and shaping the outer diameter by a series of second upper and lower punches formed in succession to the lower punch. . 제 1항에 있어서, 각 드로잉단계로의 재료의 운반을 위해서 각 펀치가 상측 또는 하측으로 물러날때 재료의 양측에서 재료를 물어 그 다음 드로잉단계로 운반하는 것을 특징으로 하는 모터케이스의 베어링부 성형방법.2. The method of forming a bearing part of a motor case according to claim 1, wherein, when each punch is withdrawn to the upper side or the lower side for conveying the material to each drawing step, the material is buried in both sides of the material and conveyed to the next drawing step. .
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