WO2018008967A1 - Powder metallurgy press mold for manufacturing helical gear - Google Patents
Powder metallurgy press mold for manufacturing helical gear Download PDFInfo
- Publication number
- WO2018008967A1 WO2018008967A1 PCT/KR2017/007160 KR2017007160W WO2018008967A1 WO 2018008967 A1 WO2018008967 A1 WO 2018008967A1 KR 2017007160 W KR2017007160 W KR 2017007160W WO 2018008967 A1 WO2018008967 A1 WO 2018008967A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide
- punch
- helical gear
- mold
- die
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
- B22F5/085—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs with helical contours
Definitions
- the present invention relates to a powder metallurgy press die, and in particular, a male spiral gear tooth is formed in a longitudinal direction on an outer surface, an upper punch is attached to a bottom surface, and a guide punch on which an bearing assembly is attached to an upper surface is formed on a female spiral. It is structurally simple by rotating in the guide die formed with gear teeth, and because the diameter of the guide punch is relatively large, the rotation is stable, and the upper punch is not attached to the guide die, but is formed by attaching to the bottom of the guide punch to secure space.
- the present invention relates to a powder metallurgical press mold for manufacturing a helical gear to facilitate movement of a hopper during operation.
- gears are installed in the power transmission unit for transmitting power or decelerating acceleration and deceleration applied to machinery or automobiles.
- Gears are mechanical parts consisting of gears connected to a rotating shaft, which work in pairs and the teeth of one gear mesh with the teeth of the other gear to transmit or decelerate rotational motion and torque without slipping.
- gears are circular, so that the contact surface of the gear teeth must be precisely shaped to achieve a smooth transfer of motion at a constant speed ratio.
- the axes connecting these gears should be relatively close, but in reality there is some spatial relationship with each other. That is, things that are parallel and not parallel, things that intersect and things that do not intersect.
- Cylindrical gears and helical gears are cylindrical gears that transmit rotational motion between the two parallel axes.
- the helical gear is inclined to one side of the gear, smooth transmission, low vibration and noise, and is mainly used for large power transmission.
- Non-cutting methods include gear forming by plastic processing using metal forming processes such as casting, forging, rolling, extrusion and powder metallurgy.
- the casting method is disadvantageous in terms of quality and productivity, and is not widely used, and research on the gear cooperative system by plastic processing suitable for mass production has been actively conducted.
- Examples of the gear forming method by plastic processing include cold extrusion, precision forging, warm forging, and powder metallurgy. Double powder metallurgy is hardened by press molding metal powder, and then sintered by heating to a high temperature. As a method of making, there is a feature that secondary processing is not required as compared to other processing, and uniform and dense structure can be obtained.
- Chinese Utility Model Registration No. 201208648 has been disclosed as an apparatus for manufacturing a helical gear by the powder metallurgy method.
- this type of structure is structurally unstable because the guiding die is attached directly to the forming punch to obtain a rotational force, thereby rotating a large diameter bearing assembly with a small diameter. Due to the extreme bias, it has an unstable structure due to its structural dynamics, and the upper punch is very long, so that the exact right angle setting is difficult, and mold accidents frequently occur in the field. This is very short, there is a problem that the mold setting is difficult due to lack of space between the hopper and the guide die, which is a raw material input device in the product forming die.
- US Patent No. 5366363 is a structure that is provided with two guide punches to give both sides rotational force, it is difficult to precisely produce a symmetrical mutual symmetry, each guide die is rotated as each guide punch is raised and lowered, respectively Since the side spur gear of the structure is rotated to rotate the center spur gear has a complicated structure.
- the present invention is to solve the above problems, a male spiral gear tooth is formed on the outer surface in the longitudinal direction, the upper punch is attached to the bottom surface, the upper side of the guide punch that the bearing assembly is attached to the female spiral gear on the inner surface It is structurally simple by rotating in the guide die formed, and the diameter of the guide punch is relatively large, so that the rotation is stable, and the upper punch is not attached to the guide die, but is attached to the bottom of the guide punch to secure space. It is an object of the present invention to provide a powder metallurgy press mold for manufacturing a helical gear to facilitate the movement of a hopper.
- the present invention is easy to assemble the forming die and the upper punch, no trouble occurs after the setting, the length of the upper punch can be formed short, the right angle setting is easy, and each setting is difficult, the mold accident frequently occurs in the field,
- Another object is to provide a powder metallurgical press mold for the manufacture of helical gears which minimizes the torsional rotational force applied to the upper punch tooth and thus prevents the upper punch tooth from being broken.
- Another object of the present invention is to provide a powder metallurgical press mold for helical gear manufacturing, which has a structurally stable structure such that the place where the rotational force is generated is structurally located at the center.
- An upper mold coupled to the press machine by a holder to move up and down, and to form a helical gear having a shaft hole formed in a center of the metal powder;
- a molding die having the same inner diameter as the helical gear and having a female helical gear tooth formed therein and having a filling hole in which metal powder is seated, and having a fixed stopper at one side thereof;
- a lower male helical gear tooth which is installed to be rotatable at the center of the upper surface of the lower bearing assembly provided in the lower plate and is inserted below the filling hole of the forming die, and which is coupled to the female helical gear tooth of the forming die on the outside thereof.
- a lower mold having a lower punch having a lower guide hole formed at a center thereof in a longitudinal direction, and a core fixed to the clamp to form an axial hole of the helical gear and drawn into the upper mold as the clamp moves up and down;
- An upper bearing assembly formed in a cylindrical shape and coupled to the bottom surface of the holder to rotate;
- An upper plate which is bolted to the bottom of the upper bearing assembly and has a through hole formed therein;
- a guide punch formed in a cylindrical shape and bolted to a center of a bottom surface of the upper bearing assembly to penetrate a through hole of the upper plate, and a male gear tooth formed in a longitudinal direction on an outer surface thereof; It is installed at the lower end of the upper plate, coupled by the upper plate and the plurality of upper guide posts, and provided with a movement stopper on the bottom side in contact with the fixed stopper of the forming die, the movement when the upper mold descends A guide plate on which the stopper comes in contact with the fixed stopper;
- a coupling hole is formed so that the guide punch penetrates through, and a female spiral gear tooth engaged with the male spiral gear tooth of the guide punch is formed on the inner side of the coupling hole so as to be raised together when the guide plate is raised.
- a rotating guide die And an upper guide hole coupled to a center of a bottom surface of the guide punch and having an upper guide hole inserted into the core of the lower mold, and having an upper male helical gear tooth engaged with the female helical gear tooth of the filling hole of the forming die on the outside thereof. It characterized in that it comprises an upper punch.
- the forming die is provided with a die plate on the outside, a plurality of guide posts are installed perpendicular to the die plate to penetrate the guide plate and the upper plate to guide the lifting and lowering of the guide plate and the upper plate,
- the fixed stopper is installed at the lower end of the guide post.
- each of the upper guide posts is provided between the upper plate and the guide plate, respectively, is provided with a coil spring for returning the guide plate to its original position when the upper mold is raised.
- the forming die and the guide punch are each formed with a plurality of pinholes which are symmetrical to each other in the longitudinal direction to match the concentricity, and the concentricity after inserting the pins while the pinholes are placed in the same line during assembly. After matching, assemble.
- the guide punch when the guide punch is lowered, when the moving stopper comes into contact with the fixed stopper and the guide plate is raised, the guide punch is rotated in one direction by the guide die and rotates the upper mold in one direction, thereby introducing the filling hole into the filling hole. Pressing the metal powder filled in the filling hole, and when the guide plate is lowered by the restoring force of the coil spring when the moving stopper is spaced apart from the fixed stopper when the upper mold is raised, the upper part is rotated in the other direction by the guide die The mold is rotated in the other direction and discharged from the filling hole.
- the forming die is lowered by itself when the pressurization of the helicom gear is completed, and the lower punch of the lower mold is rotated in one direction to the filling hole to rotate and discharge the helicom gear of the filling hole to discharge. Upon completion, the lower punch of the lower mold is rotated and discharged in the other direction from the filling hole to return to its original position.
- the male spiral gear teeth of the guide punch, the female spiral gear teeth of the guide die, the female helical gear teeth of the forming die, the lower male helical gear teeth of the lower punch and the upper male helical gear teeth of the upper punch are the same in one direction. Has a twist angle.
- a male spiral gear tooth is formed in the longitudinal direction on the outer side, an upper punch is attached to the bottom, and a guide punch on which the bearing assembly is attached to the inner side. It is structurally simple by rotating in the guide die formed with female spiral gear teeth, and the manufacturing cost is relatively small. The diameter of the guide punch is relatively large, so that the rotation is stable, and the upper punch is not attached to the guide die. By attaching to the bottom to secure space, the hopper can be easily moved during the molding operation.
- the molding die and the upper punch assembly is easy, so no trouble occurs after setting, and the length of the upper punch can be shortened, so that the right angle setting is easy, and each setting is difficult, and mold accidents frequently occur in the field.
- the upper punch teeth can be prevented from being damaged in advance, thereby minimizing maintenance costs.
- the present invention has a structurally stable structure to the place where the rotational force is generated in the structural center to reduce the occurrence of vibration or torsional moment, maximize the transmission of force to produce a helical gear stably have.
- FIG. 1 is a cross-sectional view showing the configuration of a powder metallurgy press mold for manufacturing a helical gear according to the present invention.
- Figure 2 is a cross-sectional view for explaining the assembly process of the powder metallurgy press mold for manufacturing helical gears according to the present invention.
- Figure 3 is a partially exploded perspective view showing a part of the powder metallurgy press mold for manufacturing helical gears according to the present invention.
- Figure 4 is a perspective view showing a helical gear produced by the powder metallurgy press mold for manufacturing a helical gear according to the present invention.
- FIG. 5 is an operation explanatory diagram for explaining the operation of the powder metallurgy press mold for helical gear production according to the present invention.
- FIG. 1 is a cross-sectional view showing the configuration of the powder metallurgy press mold for manufacturing helical gear according to the present invention
- Figure 2 is a cross-sectional view for explaining the assembly process of the powder metallurgy press mold for manufacturing helical gear according to the present invention
- Figure 3 is a present invention
- Partial exploded perspective view showing a partial configuration of the powder metallurgy press mold for manufacturing helical gear according to Figure 4 is a perspective view showing a helical gear produced by the powder metallurgy press mold for manufacturing helical gear according to the present invention.
- the powder metallurgical press mold 1 for helical gear manufacturing which concerns on FIG. 1 thru
- the upper mold 100 includes an upper bearing assembly 110, an upper plate 120, a guide punch 130, a guide plate 140, a guide die 150, and an upper punch 160. do.
- the upper bearing assembly 110 is formed in a cylindrical shape, the upper end is coupled to the press machine (not shown) by the holder 10, and the lower end is rotated by the thrust bearing TB.
- the upper plate 120 is formed in the shape of a rectangular plate and bolted to the bottom of the upper bearing assembly 110, and a through hole 121 is formed so that the guide punch 130 penetrates and is coupled to the upper bearing assembly 110. do.
- the guide punch 130 is formed in a cylindrical shape and is bolted to the center of the bottom surface of the upper bearing assembly 110 to penetrate the through hole 121 of the upper plate 120, and a male gear tooth in the longitudinal direction on the outer surface thereof ( 131 is formed.
- the diameter of the guide punch 130 is preferably the same or smaller than the upper bearing assembly 110, it is preferably formed larger than the upper punch (160).
- the guide plate 140 is formed in a rectangular plate shape and is spaced apart from the lower end of the upper plate 120, and bolted by the upper plate 120 and the plurality of upper guide posts 141.
- the movable stopper 143 is in contact with the fixed stopper 240 of the 200, and when the upper mold 100 is lowered, the movable stopper 143 is brought into contact with the fixed stopper 240 and raised.
- each upper guide post 141 is installed between the upper plate 120 and the guide plate 140, the coil spring 145 to return the guide plate 140 to its original position when the upper mold 100 is raised. These are each installed.
- the upper guide post 141 and the coil spring 145 are installed diagonally on the guide plate 140, and an air cylinder (not shown) is installed at the remaining diagonal to the air cylinder when the coil spring 145 is not operated. It may be operated by, or in place of the upper guide post 141 and the coil spring 145 may be installed by operating all the air cylinder.
- the guide die 150 has a coupling hole 151 formed at the center thereof so that the guide punch 130 is penetrated in the form of a disc or a square plate, and a male gear of the guide punch 130 is formed at an inner side of the coupling hole 151.
- a female spiral gear tooth 153 engaged with the tooth 131 is formed and bolted to the guide plate 140 to be raised together when the guide plate 140 is raised to rotate the guide punch 130.
- the upper punch 160 is formed in a cylindrical shape that is reduced in multiple stages from the top to the bottom, and is coupled to the center of the bottom surface of the guide punch 130, and the core 350 of the lower mold 300 is located at the center in the longitudinal direction.
- An upper guide hole 161 is provided to be inserted, and an upper male helical gear tooth 163 engaged with the female helical gear tooth 211 of the filling hole 210 of the forming die 200 is formed at an outer side of the lower end.
- the forming die 200 has the same inner diameter as the helical gear 10 and a filling hole 210 in which metal powder is seated is formed, and a female helical gear tooth 211 is formed inside the filling hole 210.
- the forming die 200 is provided with a die plate 220 on the outside, a plurality of guide posts 230 perpendicular to the die plate 220 to penetrate the guide plate 140 and the top plate 120 It is installed to guide the lifting and lowering of the upper plate 120 and the guide plate 140, the fixed stopper 240 is installed at the lower end of the guide post 230.
- the lower mold 300 includes a lower plate 310, a lower bearing assembly 320, a lower punch 330, a clamp 340, and a core 350.
- the lower plate 310 fixes the lower punch 330.
- Lower bearing assembly 320 is formed in a cylindrical shape, the lower end is fixedly coupled to the lower plate 310, the upper end is rotated by the thrust bearing (TB).
- the lower punch 330 is formed in a cylindrical shape that is reduced in multiple stages from the bottom to the top thereof and is installed to be rotatable at the center of the upper surface of the lower bearing assembly 320 to be inserted below the filling hole 210 of the forming die 200.
- the lower male helical gear tooth 331 coupled to the female helical gear tooth 211 of the forming die 200 is formed at an outer side thereof, and the lower guide hole 333 is formed at the center in the longitudinal direction.
- the clamp 340 raises and lowers the core 350.
- the core 350 is fixed to the clamp 340 to form the shaft hole 21 of the helical gear 20, and the core 350 is led into the upper mold 100 as the clamp 340 moves up and down.
- the powder metallurgical press mold 1 for manufacturing a helical gear according to the present invention includes a plurality of molding dies 200 and a guide punch 130 which are symmetrical to each other in the longitudinal direction to match concentricity. Pinholes PH are formed, and when assembling each pinhole PH is placed in the same line, the pins P are inserted, and then concentricity is matched and assembled. Remove P).
- the powder metallurgy press die 1 for manufacturing a helical gear according to the present invention includes a male spiral gear tooth 131 of a guide punch 130, a female spiral gear tooth 153 of a guide die 150, and a molding die 200.
- the female helical gear teeth 211, the lower male helical gear teeth 331 of the lower punch 330 and the upper male helical gear teeth 163 of the upper punch 160 are the same in one direction as the helical gear 20. It is desirable to have the same twist angle (eg right 20 °).
- FIG. 5 is an operation explanatory diagram for explaining the operation of the powder metallurgy press mold for helical gear production according to the present invention.
- a hopper (not shown) is drawn in a state in which the upper mold 100 is raised to fill metal powder in the filling hole 210 of the molding die 200.
- the lower punch 330 and the core 350 are inserted into the filling hole 210.
- the upper mold 100 When the hopper is discharged, the upper mold 100 is lowered as shown in FIG. 5B, and the upper bearing assembly 110, the upper plate 120, and the guide punch (according to the lowering of the upper mold 100) are lowered. 130, the guide plate 140, the guide die 150, and the upper punch 160 are all lowered along the upper plate 120 and the guide plate along the guide post 230 of the forming die 200. 140 is lowered in a straight line.
- the guide punch 130 is rotated by the guide die 150 installed in the guide plate 140, and the upper bearing assembly 110 and the upper punch coupled to the guide punch 130 are rotated. 160 is rotated in one direction.
- the upper male helical gear tooth 163 of the upper punch 160 is rotated while being engaged with the female helical gear tooth 211 of the filling hole 210 of the forming die 200, and then descends to form the inside of the filling hole 210. Pressurize the metal powder to produce a helical gear 20.
- the upper mold 100 is raised as shown in FIG. 5C, and the core 350 of the molding die 200 and the lower mold 300 is lowered.
- the movable stopper 143 of the guide plate 140 is released from the contact with the fixed stopper 240 of the forming die 200, so that the guide plate 140 of the coil spring 145 installed in the upper guide post 141 is removed.
- the guide punch 130, the upper bearing assembly 110, and the upper punch 160 are rotated in other directions and returned to their original positions while being returned to their original positions by the tension.
- the lower punch 330 is rotated in one direction in the filling hole 210 by the lower bearing assembly 320 due to the lowering of the forming die 200, and is raised to raise the helical gear 20 inside the filling hole 210. Will be discharged).
- the lower punch 330 is rotated in the other direction in the filling hole 210 by the lower bearing assembly 320 and lowered to return to its original position.
- the helical gear 20 is discharged to the outside while the hopper is put into the outside, and the metal powder is filled in the filling hole 210, and then the above operation. Repeat this.
- filling hole 220 die plate
- guide post 240 fixed stopper
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to a powder metallurgy press mold and, more specifically, to a powder metallurgy press mold for manufacturing a helical gear, wherein a guide punch is rotated in a guide die, the guide punch having a male spiral gear tooth formed in a lengthwise direction on an outside surface thereof, an upper punch attached to a lower surface thereof, and a bearing assembly attached to an upper surface thereof, the guide die having a female spiral gear tooth formed on an inside surface thereof. Therefore, the powder metallurgy press mold has a simple structure; the guide punch has a relatively large diameter and is thus stably rotated; and the upper punch is attached to the lower surface of the guide punch, but not to the guide die, so as to secure a space for facilitating the motion of a hopper during a molding process.
Description
본 발명은 분말 야금 프레스 금형에 관한 것으로서, 상세하게는 외측면에 길이 방향에 숫 나선 기어치가 형성되고, 저면에 상부 펀치가 부착되며, 상면에 베어링 어셈블리가 부착되는 가이드 펀치를 내측면에 암 나선 기어치가 형성된 가이드 다이에서 회전시킴으로써 구조적으로 간단하고, 가이드 펀치의 직경이 상대적으로 커서 회전이 안정적으로 이루어지며, 상부 펀치가 가이드 다이에 부착되지 않고, 가이드 펀치의 저면에 부착시켜 공간을 확보함으로써 성형 작업시 호퍼의 이동이 용이하도록 하는 헬리컬 기어 제조용 분말 야금 프레스 금형에 관한 것이다.The present invention relates to a powder metallurgy press die, and in particular, a male spiral gear tooth is formed in a longitudinal direction on an outer surface, an upper punch is attached to a bottom surface, and a guide punch on which an bearing assembly is attached to an upper surface is formed on a female spiral. It is structurally simple by rotating in the guide die formed with gear teeth, and because the diameter of the guide punch is relatively large, the rotation is stable, and the upper punch is not attached to the guide die, but is formed by attaching to the bottom of the guide punch to secure space. The present invention relates to a powder metallurgical press mold for manufacturing a helical gear to facilitate movement of a hopper during operation.
일반적으로 기계장치나 자동차 등에 적용되어 동력을 전달하는 동력전달부 또는 가감속하는 감속기에 다양한 기어가 설치된다. 기어는 회전축에 연결된 톱니바퀴로 이루어진 기계부품으로서, 쌍으로 작동하며 한 기어의 톱니는 다른 기어의 톱니와 맞물리면서 회전운동과 회전력을 미끄러짐 없이 전달하거나 가감한다.In general, a variety of gears are installed in the power transmission unit for transmitting power or decelerating acceleration and deceleration applied to machinery or automobiles. Gears are mechanical parts consisting of gears connected to a rotating shaft, which work in pairs and the teeth of one gear mesh with the teeth of the other gear to transmit or decelerate rotational motion and torque without slipping.
대부분의 기어는 원형으로서, 항상 일정한 속도비로 운동을 부드럽게 전달하기 위해서는 기어 톱니의 접촉면을 특정한 형태로 정확하게 만들어야 한다. 이러한 기어를 연결한 축들은 비교적 가깝게 있어야 하지만, 실제로는 서로 간에 어떤 공간적인 관계가 있다. 즉, 평행한 것과 평행하지 않은 것, 교차하는 것과 교차하지 않는 것들이다.Most gears are circular, so that the contact surface of the gear teeth must be precisely shaped to achieve a smooth transfer of motion at a constant speed ratio. The axes connecting these gears should be relatively close, but in reality there is some spatial relationship with each other. That is, things that are parallel and not parallel, things that intersect and things that do not intersect.
상기 평행인 두 축 사이에서 회전 운동을 전달하는 원통형 기어로 평기어와 헬리컬기어가 있다. 이 중 헬리컬기어는 기어의 톱니가 한쪽으로 기울어진 형태로, 전동이 원활해 진동 및 소음이 적고, 큰 동력전달에 주로 사용된다.Cylindrical gears and helical gears are cylindrical gears that transmit rotational motion between the two parallel axes. Among them, the helical gear is inclined to one side of the gear, smooth transmission, low vibration and noise, and is mainly used for large power transmission.
상기와 같은 헬리컬기어를 포함한 통상의 기어 제조방법은 크게 절삭 가공법과 비절삭 가공법으로 나눌 수 있고, 절삭 가공법에는 호빙, 기어세이빙 등 여러가지 방법이 있으나, 보통 호빙 가공한 후 세이빙 가공을 하고 버어니싱 연마 혹은 래핑 등의 공정을 거쳐 가공된다. 비절삭 가공법에는 주조, 단조, 압연, 압출 및 분말야금과 같은 금속성형 공정을 이용한 소성가공에 의한 기어 성형법 등이 있다. 이 중 주조법은 품질과 생산성 면에서 불리하여 많이 이용되지 못하고, 대량 생산화에 적합한 소성가공에 의한 기어 성협법에 대한 연구가 활발하게 진행되고 있다.Conventional gear manufacturing methods including helical gears can be divided into cutting and non-cutting methods, and cutting methods include various methods such as hobbing and gear shaving, but usually after hobbing processing and burnishing It is processed through a process such as polishing or lapping. Non-cutting methods include gear forming by plastic processing using metal forming processes such as casting, forging, rolling, extrusion and powder metallurgy. Among them, the casting method is disadvantageous in terms of quality and productivity, and is not widely used, and research on the gear cooperative system by plastic processing suitable for mass production has been actively conducted.
상기 소성가공에 의한 기어성형법으로는 냉간압출, 정밀단조, 온간단조 및 분말야금법 등을 들 수 있는데, 이중 분말야금은 금속 분말을 가압 성형하여 굳히고, 다시 높은 온도로 가열하여 소결함으로써 제품을 만드는 방법으로, 다른 가공에 비하여 2차 가공이 필요 없고, 균일하고 치밀한 조직을 얻을 수 있다는 특징이 있다.Examples of the gear forming method by plastic processing include cold extrusion, precision forging, warm forging, and powder metallurgy. Double powder metallurgy is hardened by press molding metal powder, and then sintered by heating to a high temperature. As a method of making, there is a feature that secondary processing is not required as compared to other processing, and uniform and dense structure can be obtained.
이러한 분말야금법에 의해 헬리컬 기어를 제조하는 장치로서 중국 실용신안등록 201208648호가 개시되어 있다.Chinese Utility Model Registration No. 201208648 has been disclosed as an apparatus for manufacturing a helical gear by the powder metallurgy method.
그러나 이러한 장채는 가이드 다이(GUIDE DIE)를 성형 펀치에 직접 부착하여 회전력을 얻으므로 작은 직경으로 직경이 큰 베어링 어셈블리를 회전시키기 때문에 구조적으로 불안하고, 회전력을 주는 구조가 중심에 있지 않고 한쪽 하단에 극단적으로 치우쳐 있기 때문에 구조역학상으로 불안한 구조를 가지며, 또한 상부 펀치가 매우길어져 정확한 직각 셋팅이 어려워 현장에서 금형사고가 빈번히 발생하고, 상부 펀치 치형에 비틀림 회전력이 가해져 상부 펀치 치형이 자주 파손되어 수명이 매우 짧으며, 제품 성형 다이에 원재료 투입장치인 호퍼와 가이드 다이와의 공간 부족으로 금형 셋팅이 어려운 문제점이 있다.However, this type of structure is structurally unstable because the guiding die is attached directly to the forming punch to obtain a rotational force, thereby rotating a large diameter bearing assembly with a small diameter. Due to the extreme bias, it has an unstable structure due to its structural dynamics, and the upper punch is very long, so that the exact right angle setting is difficult, and mold accidents frequently occur in the field. This is very short, there is a problem that the mold setting is difficult due to lack of space between the hopper and the guide die, which is a raw material input device in the product forming die.
이러한 문제점을 해결하기 위해 미국 특허등록 5366363호가 개시되어 있다.In order to solve this problem, US Patent No. 5366363 is disclosed.
그러나, 이러한 미국 특허등록 5366363호는 양측 회전력을 주는 가이드 펀치가 2개가 구비되는 구조로서, 상호 정확한 대칭이 되도록 정밀 제작이 어렵고, 각각의 가이드 펀치가 승하강되면서 각각의 가이드 다이를 회전시키고, 각각의 사이드 스퍼 기어가 회전되면서 센터 스퍼 기어를 회전시키는 구조이기 때문에 구조가 복잡한 문제점이 있다.However, the US Patent No. 5366363 is a structure that is provided with two guide punches to give both sides rotational force, it is difficult to precisely produce a symmetrical mutual symmetry, each guide die is rotated as each guide punch is raised and lowered, respectively Since the side spur gear of the structure is rotated to rotate the center spur gear has a complicated structure.
<선행기술문헌><Preceding technical literature>
<특허문헌><Patent Documents>
(선행기술 1) 중국 실용신안등록 201208648호(Priority Technology 1) Utility Model Registration of China 201208648
(선행기술 2) 미국 특허등록 5366363호(Advanced technology 2) US patent registration 5366363
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 외측면에 길이 방향에 숫 나선 기어치가 형성되고, 저면에 상부 펀치가 부착되며, 상면에 베어링 어셈블리가 부착되는 가이드 펀치를 내측면에 암 나선 기어치가 형성된 가이드 다이에서 회전시킴으로써 구조적으로 간단하고, 가이드 펀치의 직경이 상대적으로 커서 회전이 안정적으로 이루어지며, 상부 펀치가 가이드 다이에 부착되지 않고, 가이드 펀치의 저면에 부착시켜 공간을 확보함으로써 성형 작업시 호퍼의 이동이 용이하도록 하는 헬리컬 기어 제조용 분말 야금 프레스 금형을 제공하는데 그 목적이 있다.The present invention is to solve the above problems, a male spiral gear tooth is formed on the outer surface in the longitudinal direction, the upper punch is attached to the bottom surface, the upper side of the guide punch that the bearing assembly is attached to the female spiral gear on the inner surface It is structurally simple by rotating in the guide die formed, and the diameter of the guide punch is relatively large, so that the rotation is stable, and the upper punch is not attached to the guide die, but is attached to the bottom of the guide punch to secure space. It is an object of the present invention to provide a powder metallurgy press mold for manufacturing a helical gear to facilitate the movement of a hopper.
또한, 본 발명은 성형 다이와 상부 펀치 조립이 용이하여 셋팅후 트러블이 미발생하고, 상부 펀치의 길이를 짧게 형성할 수 있어 직각 셋팅이 용이하고, 각 셋팅이 어려워 현장에서 금형사고가 빈번히 발생하고, 상부 펀치 치형에 가해지는 비틀림 회전력을 최소화시켜 상부 펀치 치형이 파손되는 것을 미연에 방지하도록 하는 헬리컬 기어 제조용 분말 야금 프레스 금형을 제공하는데 다른 목적이 있다.In addition, the present invention is easy to assemble the forming die and the upper punch, no trouble occurs after the setting, the length of the upper punch can be formed short, the right angle setting is easy, and each setting is difficult, the mold accident frequently occurs in the field, Another object is to provide a powder metallurgical press mold for the manufacture of helical gears which minimizes the torsional rotational force applied to the upper punch tooth and thus prevents the upper punch tooth from being broken.
또, 본 발명은 회전력을 발생하는 곳이 구조적으로 중심에 위치하도록 하여 구조역학상으로 안정적인 구조를 가지도록 하는 헬리컬 기어 제조용 분말 야금 프레스 금형을 제공하는데 또 다른 목적이 있다.Another object of the present invention is to provide a powder metallurgical press mold for helical gear manufacturing, which has a structurally stable structure such that the place where the rotational force is generated is structurally located at the center.
상기와 같은 목적을 달성하기 위한 본 발명의 특징은,Features of the present invention for achieving the above object,
프레스 기계에 홀더에 의해 결합되어 승하강되며 금속 분말로 중심부에 축홀이 형성된 헬리컬 기어를 성형하는 상부 금형과; 상기 헬리컬 기어와 동일한 내경을 가지며 내측에 암 헬리컬 기어치가 형성되며 금속 분말이 안착되는 충진홀이 구비되고, 일측에 고정 스토퍼를 구비하는 성형 다이; 및 하부 플레이트에 구비된 하부 베어링 어셈블리의 상면 중앙에서 회전 가능하도록 설치되어 상기 성형 다이의 충진홀 하부에 삽입되며, 외측에 상기 성형 다이의 암 헬리컬 기어치와 결합되는 하부 숫 헬리컬 기어치가 형성되고, 길이 방향 중앙에 하부 가이드홀이 형성되는 하부 펀치와, 상기 헬리컬 기어의 축홀을 형성하도록 클램프에 고정되어 상기 클램프의 승강에 따라 상기 상부 금형으로 인입하는 코어를 구비하는 하부 금형으로 이루어지며,An upper mold coupled to the press machine by a holder to move up and down, and to form a helical gear having a shaft hole formed in a center of the metal powder; A molding die having the same inner diameter as the helical gear and having a female helical gear tooth formed therein and having a filling hole in which metal powder is seated, and having a fixed stopper at one side thereof; And a lower male helical gear tooth which is installed to be rotatable at the center of the upper surface of the lower bearing assembly provided in the lower plate and is inserted below the filling hole of the forming die, and which is coupled to the female helical gear tooth of the forming die on the outside thereof. A lower mold having a lower punch having a lower guide hole formed at a center thereof in a longitudinal direction, and a core fixed to the clamp to form an axial hole of the helical gear and drawn into the upper mold as the clamp moves up and down;
상기 상부 금형은,The upper mold,
원기둥 형태로 형성되어 상기 홀더의 저면에 결합되어 회전되는 상부 베어링 어셈블리와; 상기 상부 베어링 어셈블리의 저면과 볼트 결합되고, 관통홀이 형성되는 상부 플레이트와; 원기둥 형태로 형성되어 상기 상부 베어링 어셈블리의 저면 중앙에 볼트 결합되어 상기 상부 플레이트의 관통홀을 관통하고, 외측면에 길이 방향으로 숫 나선 기어치가 형성되는 가이드 펀치와; 상기 상부 플레이트의 하단에서 이격 설치되고, 상기 상부 플레이트와 복수의 상부 가이드 포스트에 의해 결합되며, 저면 일측에 상기 성형 다이의 고정 스토퍼와 접촉되는 이동 스토퍼를 구비하고, 상기 상부 금형의 하강시 상기 이동 스토퍼가 고정 스토퍼와 접촉되어 상승되는 가이드 플레이트와; 상기 가이드 펀치가 관통 결합되도록 결합홀이 형성되고, 상기 결합홀의 내측면에 상기 가이드 펀치의 숫 나선 기어치와 치합되는 암 나선 기어치가 형성되어 상기 가이드 플레이트가 상승될 시 함께 상승되며 상기 가이드 펀치를 회전시키는 가이드 다이; 및 상기 가이드 펀치의 저면 중앙에 결합되고, 상기 하부 금형의 코어가 내부에 삽입되도록 상부 가이드홀이 구비되며, 외측에 상기 성형 다이의 충진홀의 암 헬리컬 기어치와 치합되는 상부 숫 헬리컬 기어치가 형성되는 상부 펀치를 포함하는 것을 특징으로 한다.An upper bearing assembly formed in a cylindrical shape and coupled to the bottom surface of the holder to rotate; An upper plate which is bolted to the bottom of the upper bearing assembly and has a through hole formed therein; A guide punch formed in a cylindrical shape and bolted to a center of a bottom surface of the upper bearing assembly to penetrate a through hole of the upper plate, and a male gear tooth formed in a longitudinal direction on an outer surface thereof; It is installed at the lower end of the upper plate, coupled by the upper plate and the plurality of upper guide posts, and provided with a movement stopper on the bottom side in contact with the fixed stopper of the forming die, the movement when the upper mold descends A guide plate on which the stopper comes in contact with the fixed stopper; A coupling hole is formed so that the guide punch penetrates through, and a female spiral gear tooth engaged with the male spiral gear tooth of the guide punch is formed on the inner side of the coupling hole so as to be raised together when the guide plate is raised. A rotating guide die; And an upper guide hole coupled to a center of a bottom surface of the guide punch and having an upper guide hole inserted into the core of the lower mold, and having an upper male helical gear tooth engaged with the female helical gear tooth of the filling hole of the forming die on the outside thereof. It characterized in that it comprises an upper punch.
여기에서, 상기 성형 다이는 외측에 다이 플레이트가 구비되고, 상기 가이드 플레이트 및 상부 플레이트를 관통하도록 상기 다이 플레이트에 수직으로 복수의 가이드 포스트가 설치되어 상기 가이드 플레이트 및 상부 플레이트의 승하강을 가이드하며, 상기 가이드 포스트의 하단에 상기 고정 스토퍼가 설치된다.Here, the forming die is provided with a die plate on the outside, a plurality of guide posts are installed perpendicular to the die plate to penetrate the guide plate and the upper plate to guide the lifting and lowering of the guide plate and the upper plate, The fixed stopper is installed at the lower end of the guide post.
여기에서 또한, 각각의 상기 상부 가이드 포스트는 상기 상부 플레이트와 가이드 플레이트 사이에 설치되어 상기 상부 금형의 상승시 상기 가이드 플레이트를 원위치로 복귀시키는 코일 스프링이 각각 설치된다.Here, each of the upper guide posts is provided between the upper plate and the guide plate, respectively, is provided with a coil spring for returning the guide plate to its original position when the upper mold is raised.
여기에서 또, 상기 성형 다이와, 가이드 펀치에는 동심도를 일치시키도록 길이 방향으로 서로 대칭되는 복수의 핀홀이 각각 형성되고, 조립시 각각의 상기 핀홀을 동일 선상으로 위치시킨 상태에서 핀을 삽입한 후 동심도를 일치시킨 후 조립한다.Here, the forming die and the guide punch are each formed with a plurality of pinholes which are symmetrical to each other in the longitudinal direction to match the concentricity, and the concentricity after inserting the pins while the pinholes are placed in the same line during assembly. After matching, assemble.
여기에서 또, 상기 가이드 펀치는 상기 상부 금형의 하강시 상기 이동 스토퍼가 고정 스토퍼와 접촉되어 상기 가이드 플레이트가 상승되면 상기 가이드 다이에 의해 일방향 회전되면서 상기 상부 금형을 일방향 회전시켜 상기 충진홀로 인입시키면서 상기 충진홀에 충진된 금속 분말을 가압하고, 상기 상부 금형의 상승시 상기 이동 스토퍼가 고정 스토퍼에서 이격되면서 상기 가이드 플레이트가 상기 코일 스프링의 복원력에 의해 하강되면 상기 가이드 다이에 의해 타방향 회전되면서 상기 상부 금형을 타방향 회전시켜 상기 충진홀에서 배출시킨다.Here, when the guide punch is lowered, when the moving stopper comes into contact with the fixed stopper and the guide plate is raised, the guide punch is rotated in one direction by the guide die and rotates the upper mold in one direction, thereby introducing the filling hole into the filling hole. Pressing the metal powder filled in the filling hole, and when the guide plate is lowered by the restoring force of the coil spring when the moving stopper is spaced apart from the fixed stopper when the upper mold is raised, the upper part is rotated in the other direction by the guide die The mold is rotated in the other direction and discharged from the filling hole.
여기에서 또, 상기 성형 다이는 상기 헬리컴 기어의 가압이 완료되면 자체적으로 하강되면서 상기 하부 금형의 하부 펀치를 상기 충진홀로 일방향으로 회전 인입시켜 상기 충진홀의 헬리컴 기어를 회전시켜 배출시키고, 배출이 완료되면 자체적으로 상승되면서 상기 하부 금형의 하부 펀치를 상기 충진홀에서 타방향으로 회전 배출시켜 원위치시킨다.Here, the forming die is lowered by itself when the pressurization of the helicom gear is completed, and the lower punch of the lower mold is rotated in one direction to the filling hole to rotate and discharge the helicom gear of the filling hole to discharge. Upon completion, the lower punch of the lower mold is rotated and discharged in the other direction from the filling hole to return to its original position.
여기에서 또, 상기 가이드 펀치의 숫 나선 기어치, 가이드 다이의 암 나선 기어치, 성형 다이의 암 헬리컬 기어치, 하부 펀치의 하부 숫 헬리컬 기어치 및 상부 펀치의 상부 숫 헬리컬 기어치는 일측방향으로 동일한 비틀림 각도를 가진다.Here, the male spiral gear teeth of the guide punch, the female spiral gear teeth of the guide die, the female helical gear teeth of the forming die, the lower male helical gear teeth of the lower punch and the upper male helical gear teeth of the upper punch are the same in one direction. Has a twist angle.
상기와 같이 구성되는 본 발명인 헬리컬 기어 제조용 분말 야금 프레스 금형에 따르면, 외측면에 길이 방향에 숫 나선 기어치가 형성되고, 저면에 상부 펀치가 부착되며, 상면에 베어링 어셈블리가 부착되는 가이드 펀치를 내측면에 암 나선 기어치가 형성된 가이드 다이에서 회전시킴으로써 구조적으로 간단하여 제조 비용이 상대적으로 적고, 가이드 펀치의 직경이 상대적으로 커서 회전이 안정적으로 이루어지며, 상부 펀치가 가이드 다이에 부착되지 않고, 가이드 펀치의 저면에 부착시켜 공간을 확보함으로써 성형 작업시 호퍼의 이동이 용이할 수 있다.According to the powder metallurgical press mold for manufacturing the helical gear of the present invention configured as described above, a male spiral gear tooth is formed in the longitudinal direction on the outer side, an upper punch is attached to the bottom, and a guide punch on which the bearing assembly is attached to the inner side. It is structurally simple by rotating in the guide die formed with female spiral gear teeth, and the manufacturing cost is relatively small.The diameter of the guide punch is relatively large, so that the rotation is stable, and the upper punch is not attached to the guide die. By attaching to the bottom to secure space, the hopper can be easily moved during the molding operation.
또한, 본 발명에 따르면 성형 다이와 상부 펀치 조립이 용이하여 셋팅후 트러블이 미발생하고, 상부 펀치의 길이를 짧게 형성할 수 있어 직각 셋팅이 용이하고, 각 셋팅이 어려워 현장에서 금형사고가 빈번히 발생하고, 상부 펀치 치형에 가해지는 비틀림 회전력을 최소화시켜 상부 펀치 치형이 파손되는 것을 미연에 방지할 수 있어 유지 보수 비용을 최소화시킬 수 있다.In addition, according to the present invention, the molding die and the upper punch assembly is easy, so no trouble occurs after setting, and the length of the upper punch can be shortened, so that the right angle setting is easy, and each setting is difficult, and mold accidents frequently occur in the field. By minimizing the torsional rotational force applied to the upper punch teeth, the upper punch teeth can be prevented from being damaged in advance, thereby minimizing maintenance costs.
또, 본 발명에 따르면 회전력을 발생하는 곳이 구조적으로 중심에 위치하도록 하여 구조역학상으로 안정적인 구조를 가짐으로써 진동이나 비틀림 모멘트의 발생을 줄이고, 힘의 전달을 극대화시켜 안정적으로 헬리컬 기어를 제작할 수 있다.In addition, according to the present invention has a structurally stable structure to the place where the rotational force is generated in the structural center to reduce the occurrence of vibration or torsional moment, maximize the transmission of force to produce a helical gear stably have.
도 1은 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형의 구성을 나타낸 단면도이다.1 is a cross-sectional view showing the configuration of a powder metallurgy press mold for manufacturing a helical gear according to the present invention.
도 2는 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형의 조립 과정을 설명하기 위한 단면도이다.Figure 2 is a cross-sectional view for explaining the assembly process of the powder metallurgy press mold for manufacturing helical gears according to the present invention.
도 3은 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형중 일부 구성을 나타낸 부분 분해 사시도이다.Figure 3 is a partially exploded perspective view showing a part of the powder metallurgy press mold for manufacturing helical gears according to the present invention.
도 4는 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형에 의해 제작된 헬리컬 기어를 나타낸 사시도이다.Figure 4 is a perspective view showing a helical gear produced by the powder metallurgy press mold for manufacturing a helical gear according to the present invention.
도 5는 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형의 동작을 설명하기 위한 동작 설명도이다.5 is an operation explanatory diagram for explaining the operation of the powder metallurgy press mold for helical gear production according to the present invention.
이하, 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형의 구성을 첨부된 도면을 참조하여 상세하게 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, the configuration of the powder metallurgy press mold for manufacturing helical gears according to the present invention will be described in detail.
하기에서 본 발명을 설명함에 있어, 관련된 공지 기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략할 것이다. 그리고 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례 등에 따라 달라질 수 있다. 그러므로 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.
도 1은 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형의 구성을 나타낸 단면도이고, 도 2는 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형의 조립 과정을 설명하기 위한 단면도이며, 도 3은 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형중 일부 구성을 나타낸 부분 분해 사시도이고, 도 4는 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형에 의해 제작된 헬리컬 기어를 나타낸 사시도이다.1 is a cross-sectional view showing the configuration of the powder metallurgy press mold for manufacturing helical gear according to the present invention, Figure 2 is a cross-sectional view for explaining the assembly process of the powder metallurgy press mold for manufacturing helical gear according to the present invention, Figure 3 is a present invention Partial exploded perspective view showing a partial configuration of the powder metallurgy press mold for manufacturing helical gear according to Figure 4 is a perspective view showing a helical gear produced by the powder metallurgy press mold for manufacturing helical gear according to the present invention.
도 1 내지 도 4를 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형(1)은, 상부 금형(100)과, 성형 다이(200) 및 하부 금형(300)으로 이루어진다.The powder metallurgical press mold 1 for helical gear manufacturing which concerns on FIG. 1 thru | or 4 is comprised from the upper metal mold | die 100, the molding die 200, and the lower metal mold | die 300. As shown in FIG.
먼저, 상부 금형(100)은 상부 베어링 어셈블리(110)와, 상부 플레이트(120)와, 가이드 펀치(130)와, 가이드 플레이트(140)와, 가이드 다이(150) 및 상부 펀치(160)를 포함한다.First, the upper mold 100 includes an upper bearing assembly 110, an upper plate 120, a guide punch 130, a guide plate 140, a guide die 150, and an upper punch 160. do.
상부 베어링 어셈블리(110)는 원기둥 형태로 형성되고, 상단이 프레스 기계(미도시)에 홀더(10)에 의해 결합되고, 하단이 스러스트 베어링(TB)에 의해 회전된다.The upper bearing assembly 110 is formed in a cylindrical shape, the upper end is coupled to the press machine (not shown) by the holder 10, and the lower end is rotated by the thrust bearing TB.
상부 플레이트(120)는 장방형의 판 형태로 형성되어 상부 베어링 어셈블리(110)의 저면과 볼트 결합되고, 가이드 펀치(130)가 관통하여 상부 베어링 어셈블리(110)와 결합되도록 관통홀(121)이 형성된다.The upper plate 120 is formed in the shape of a rectangular plate and bolted to the bottom of the upper bearing assembly 110, and a through hole 121 is formed so that the guide punch 130 penetrates and is coupled to the upper bearing assembly 110. do.
가이드 펀치(130)는 원기둥 형태로 형성되어 상부 베어링 어셈블리(110)의 저면 중앙에 볼트 결합되어 상부 플레이트(120)의 관통홀(121)을 관통하고, 외측면에 길이 방향으로 숫 나선 기어치(131)가 형성된다. 이때, 가이드 펀치(130)의 지름은 상부 베어링 어셈블리(110)과 동일하거나 작게 형성되고, 상부 펀치(160)보다는 크게 형성되는 것이 바람직하다.The guide punch 130 is formed in a cylindrical shape and is bolted to the center of the bottom surface of the upper bearing assembly 110 to penetrate the through hole 121 of the upper plate 120, and a male gear tooth in the longitudinal direction on the outer surface thereof ( 131 is formed. At this time, the diameter of the guide punch 130 is preferably the same or smaller than the upper bearing assembly 110, it is preferably formed larger than the upper punch (160).
가이드 플레이트(140)는 장방형의 판 형태로 형성되어 상부 플레이트(120)의 하단에서 이격 설치되고, 상부 플레이트(120)와 복수의 상부 가이드 포스트(141)에 의해 볼트 결합되며, 저면 일측에 성형 다이(200)의 고정 스토퍼(240)와 접촉되는 이동 스토퍼(143)를 구비하고, 상부 금형(100)의 하강시 이동 스토퍼(143)가 고정 스토퍼(240)와 접촉되어 상승된다. 여기에서, 각각의 상부 가이드 포스트(141)는 상부 플레이트(120)와 가이드 플레이트(140) 사이에 설치되어 상부 금형(100)의 상승시 가이드 플레이트(140)를 원위치로 복귀시키는 코일 스프링(145)이 각각 설치된다. 또한, 상부 가이드 포스트(141)와 코일 스프링(145)을 가이드 플레이트(140) 상에서 대각으로 설치하고, 나머지 대각에는 에어 실린더(미도시)를 설치하여 코일 스프링(145)의 미동작시 에어 실린더에 의해 동작되도록 할 수도 있고, 상부 가이드 포스트(141)와 코일 스프링(145)를 대신하여 에어 실린더를 모두 설치하여 동작시킬 수도 있다.The guide plate 140 is formed in a rectangular plate shape and is spaced apart from the lower end of the upper plate 120, and bolted by the upper plate 120 and the plurality of upper guide posts 141. The movable stopper 143 is in contact with the fixed stopper 240 of the 200, and when the upper mold 100 is lowered, the movable stopper 143 is brought into contact with the fixed stopper 240 and raised. Here, each upper guide post 141 is installed between the upper plate 120 and the guide plate 140, the coil spring 145 to return the guide plate 140 to its original position when the upper mold 100 is raised. These are each installed. In addition, the upper guide post 141 and the coil spring 145 are installed diagonally on the guide plate 140, and an air cylinder (not shown) is installed at the remaining diagonal to the air cylinder when the coil spring 145 is not operated. It may be operated by, or in place of the upper guide post 141 and the coil spring 145 may be installed by operating all the air cylinder.
가이드 다이(150)는 원판 또는 사각판 형태로 가이드 펀치(130)가 관통 결합되도록 중앙부에 결합홀(151)이 형성되고, 결합홀(151)의 내측면에 가이드 펀치(130)의 숫 나선 기어치(131)와 치합되는 암 나선 기어치(153)가 형성되어 가이드 플레이트(140)에 볼트 결합되어 가이드 플레이트(140)가 상승될 시 함께 상승되며 가이드 펀치(130)를 회전시킨다.The guide die 150 has a coupling hole 151 formed at the center thereof so that the guide punch 130 is penetrated in the form of a disc or a square plate, and a male gear of the guide punch 130 is formed at an inner side of the coupling hole 151. A female spiral gear tooth 153 engaged with the tooth 131 is formed and bolted to the guide plate 140 to be raised together when the guide plate 140 is raised to rotate the guide punch 130.
상부 펀치(160)는 상단에서 하단으로 갈수록 다단으로 축소된 원기둥 형태로 형성되어 가이드 펀치(130)의 저면 중앙에 결합되고, 길이 방향으로 중앙에 하부 금형(300)의 코어(350)가 내부에 삽입되도록 상부 가이드홀(161)이 구비되며, 하단 외측에 성형 다이(200)의 충진홀(210)의 암 헬리컬 기어치(211)와 치합되는 상부 숫 헬리컬 기어치(163)가 형성된다.The upper punch 160 is formed in a cylindrical shape that is reduced in multiple stages from the top to the bottom, and is coupled to the center of the bottom surface of the guide punch 130, and the core 350 of the lower mold 300 is located at the center in the longitudinal direction. An upper guide hole 161 is provided to be inserted, and an upper male helical gear tooth 163 engaged with the female helical gear tooth 211 of the filling hole 210 of the forming die 200 is formed at an outer side of the lower end.
그리고, 성형 다이(200)는 헬리컬 기어(10)와 동일한 내경을 가지며 금속 분말이 안착되는 충진홀(210)이 형성되고, 충진홀(210)의 내측에 암 헬리컬 기어치(211)가 형성된다. 여기에서, 성형 다이(200)는 외측에 다이 플레이트(220)가 구비되고, 가이드 플레이트(140) 및 상부 플레이트(120)를 관통하도록 다이 플레이트(220)에 수직으로 복수의 가이드 포스트(230)가 설치되어 상부 플레이트(120) 및 가이드 플레이트(140)의 승하강을 가이드하며, 가이드 포스트(230)의 하단에 고정 스토퍼(240)가 설치된다.In addition, the forming die 200 has the same inner diameter as the helical gear 10 and a filling hole 210 in which metal powder is seated is formed, and a female helical gear tooth 211 is formed inside the filling hole 210. . Here, the forming die 200 is provided with a die plate 220 on the outside, a plurality of guide posts 230 perpendicular to the die plate 220 to penetrate the guide plate 140 and the top plate 120 It is installed to guide the lifting and lowering of the upper plate 120 and the guide plate 140, the fixed stopper 240 is installed at the lower end of the guide post 230.
또한, 하부 금형(300)은 하부 플레이트(310)와, 하부 베어링 어셈블리(320)와, 하부 펀치(330)와, 클램프(340) 및 코어(350)를 포함한다.In addition, the lower mold 300 includes a lower plate 310, a lower bearing assembly 320, a lower punch 330, a clamp 340, and a core 350.
하부 플레이트(310)는 하부 펀치(330)를 고정시킨다.The lower plate 310 fixes the lower punch 330.
하부 베어링 어셈블리(320)는 원기둥 형태로 형성되고, 하단이 하부 플레이트(310)에 고정 결합되고, 상단이 스러스트 베어링(TB)에 의해 회전된다. Lower bearing assembly 320 is formed in a cylindrical shape, the lower end is fixedly coupled to the lower plate 310, the upper end is rotated by the thrust bearing (TB).
하부 펀치(330)는 하단에서 상단으로 갈수록 다단으로 축소된 원기둥 형태로 형성되어 하부 베어링 어셈블리(320)의 상면 중앙에서 회전 가능하도록 설치되어 성형 다이(200)의 충진홀(210) 하부에 삽입되며, 외측에 성형 다이(200)의 암 헬리컬 기어치(211)와 결합되는 하부 숫 헬리컬 기어치(331)가 형성되고, 길이 방향 중앙에 하부 가이드홀(333)이 형성된다.The lower punch 330 is formed in a cylindrical shape that is reduced in multiple stages from the bottom to the top thereof and is installed to be rotatable at the center of the upper surface of the lower bearing assembly 320 to be inserted below the filling hole 210 of the forming die 200. The lower male helical gear tooth 331 coupled to the female helical gear tooth 211 of the forming die 200 is formed at an outer side thereof, and the lower guide hole 333 is formed at the center in the longitudinal direction.
클램프(340)는 코어(350)를 승하강시킨다.The clamp 340 raises and lowers the core 350.
코어(350)는 도 4에 도시된 바와 같이 헬리컬 기어(20)의 축홀(21)을 형성하도록 클램프(340)에 고정되어 클램프(340)의 승강에 따라 상부 금형(100)으로 인입한다.As shown in FIG. 4, the core 350 is fixed to the clamp 340 to form the shaft hole 21 of the helical gear 20, and the core 350 is led into the upper mold 100 as the clamp 340 moves up and down.
한편, 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형(1)은 도 2에 도시된 바와 같이 성형 다이(200)와, 가이드 펀치(130)에는 동심도를 일치시키도록 길이 방향으로 서로 대칭되는 복수의 핀홀(PH)이 각각 형성되고, 조립시 각각의 핀홀(PH)을 동일 선상으로 위치시킨 상태에서 핀(P)을 삽입한 후 동심도를 일치시킨 후 조립하며, 조립후 핀홀(PH)에서 핀(P)을 제거한다.Meanwhile, as illustrated in FIG. 2, the powder metallurgical press mold 1 for manufacturing a helical gear according to the present invention includes a plurality of molding dies 200 and a guide punch 130 which are symmetrical to each other in the longitudinal direction to match concentricity. Pinholes PH are formed, and when assembling each pinhole PH is placed in the same line, the pins P are inserted, and then concentricity is matched and assembled. Remove P).
또한, 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형(1)은 가이드 펀치(130)의 숫 나선 기어치(131), 가이드 다이(150)의 암 나선 기어치(153), 성형 다이(200)의 암 헬리컬 기어치(211), 하부 펀치(330)의 하부 숫 헬리컬 기어치(331) 및 상부 펀치(160)의 상부 숫 헬리컬 기어치(163)는 헬리컬 기어(20)와 동일하게 일측방향으로 동일한 비틀림 각도(예를 들어, 우측 20°)를 가지는 것이 바람직하다.In addition, the powder metallurgy press die 1 for manufacturing a helical gear according to the present invention includes a male spiral gear tooth 131 of a guide punch 130, a female spiral gear tooth 153 of a guide die 150, and a molding die 200. The female helical gear teeth 211, the lower male helical gear teeth 331 of the lower punch 330 and the upper male helical gear teeth 163 of the upper punch 160 are the same in one direction as the helical gear 20. It is desirable to have the same twist angle (eg right 20 °).
이하, 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형의 동작을 첨부된 도면을 참조하여 상세하게 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, the operation of the powder metallurgy press mold for manufacturing helical gears according to the present invention will be described in detail.
도 5는 본 발명에 따른 헬리컬 기어 제조용 분말 야금 프레스 금형의 동작을 설명하기 위한 동작 설명도이다.5 is an operation explanatory diagram for explaining the operation of the powder metallurgy press mold for helical gear production according to the present invention.
도 5의 (a)와 같이 상부 금형(100)이 상승된 상태에서 호퍼(미도시)가 인입되어 금속 분말을 성형 다이(200)의 충진홀(210)에 충진시킨다. 이때, 충진홀(210) 내부에는 하부 펀치(330)와 코어(350)가 인입된 상태이다.As shown in FIG. 5A, a hopper (not shown) is drawn in a state in which the upper mold 100 is raised to fill metal powder in the filling hole 210 of the molding die 200. In this case, the lower punch 330 and the core 350 are inserted into the filling hole 210.
그리고 호퍼가 배출되면, 도 5의 (b)와 같이 상부 금형(100)이 하강되는데, 상부 금형(100)의 하강에 따라 상부 베어링 어셈블리(110)와, 상부 플레이트(120)와, 가이드 펀치(130)와, 가이드 플레이트(140)와, 가이드 다이(150) 및 상부 펀치(160)가 모두 하강되는 데, 성형 다이(200)의 가이드 포스트(230)를 따라 상부 플레이트(120) 및 가이드 플레이트(140)가 직선으로 하강된다.When the hopper is discharged, the upper mold 100 is lowered as shown in FIG. 5B, and the upper bearing assembly 110, the upper plate 120, and the guide punch (according to the lowering of the upper mold 100) are lowered. 130, the guide plate 140, the guide die 150, and the upper punch 160 are all lowered along the upper plate 120 and the guide plate along the guide post 230 of the forming die 200. 140 is lowered in a straight line.
계속해서 상부 금형(100)이 하강되면, 가이드 플레이트(140)의 이동 스토퍼(143)가 성형 다이(200)의 고정 스토퍼(240)와 접촉되고, 이로 인해 가이드 플레이트(140)가 상부 가이드 포스트(141)에 설치된 코일 스프링(145)의 장력을 이기면서 상승된다.Subsequently, when the upper mold 100 is lowered, the moving stopper 143 of the guide plate 140 comes into contact with the fixed stopper 240 of the forming die 200, thereby causing the guide plate 140 to move to the upper guide post ( The coil spring 145 installed in 141 is raised while winning tension.
그리하여 가이드 플레이트(140)가 상승되면, 가이드 플레이트(140)에 설치된 가이드 다이(150)에 의해 가이드 펀치(130)가 회전되고, 가이드 펀치(130)에 결합된 상부 베어링 어셈블리(110) 및 상부 펀치(160)가 일방향으로 회전된다.Thus, when the guide plate 140 is raised, the guide punch 130 is rotated by the guide die 150 installed in the guide plate 140, and the upper bearing assembly 110 and the upper punch coupled to the guide punch 130 are rotated. 160 is rotated in one direction.
이로 인해, 상부 펀치(160)의 상부 숫 헬리컬 기어치(163)가 성형 다이(200)의 충진홀(210)의 암 헬리컬 기어치(211)와 치합되면서 회전되며 하강하여 충진홀(210) 내부의 금속 분말을 가압하여 헬리컬 기어(20)를 제작한다.As a result, the upper male helical gear tooth 163 of the upper punch 160 is rotated while being engaged with the female helical gear tooth 211 of the filling hole 210 of the forming die 200, and then descends to form the inside of the filling hole 210. Pressurize the metal powder to produce a helical gear 20.
가압이 완료되면, 도 5의 (c)와 같이 상부 금형(100)은 상승되고, 성형 다이(200) 및 하부 금형(300)의 코어(350)는 하강된다.When the pressurization is completed, the upper mold 100 is raised as shown in FIG. 5C, and the core 350 of the molding die 200 and the lower mold 300 is lowered.
이로 인해 가이드 플레이트(140)의 이동 스토퍼(143)가 성형 다이(200)의 고정 스토퍼(240)와의 접촉이 해제되어 가이드 플레이트(140)가 상부 가이드 포스트(141)에 설치된 코일 스프링(145)의 장력에 의해 원위치로 복귀하면서 가이드 펀치(130), 상부 베어링 어셈블리(110) 및 상부 펀치(160)가 타방향으로 회전되어 원위치로 복귀된다.As a result, the movable stopper 143 of the guide plate 140 is released from the contact with the fixed stopper 240 of the forming die 200, so that the guide plate 140 of the coil spring 145 installed in the upper guide post 141 is removed. The guide punch 130, the upper bearing assembly 110, and the upper punch 160 are rotated in other directions and returned to their original positions while being returned to their original positions by the tension.
이와 동시에, 성형 다이(200)의 하강으로 인해 하부 펀치(330)가 하부 베어링 어셈블리(320)에 의해서 충진홀(210) 내에서 일방향으로 회전되며 상승되어 충진홀(210) 내부의 헬리컬 기어(20)를 배출된다.At the same time, the lower punch 330 is rotated in one direction in the filling hole 210 by the lower bearing assembly 320 due to the lowering of the forming die 200, and is raised to raise the helical gear 20 inside the filling hole 210. Will be discharged).
그리고, 도 5의 (a)와 같이 성형 다이(200)가 상승되면, 하부 펀치(330)가 하부 베어링 어셈블리(320)에 의해서 충진홀(210) 내에서 타방향으로 회전되며 하강되어 원위치로 복귀하고, 코어(350)가 클램프(340)에 의해 원위치로 승강된 후 호퍼가 투입되면서 제작된 헬리컬 기어(20)를 외부로 배출함과 동시에 금속 분말을 충진홀(210)에 채운 다음 상기의 동작을 반복 수행한다.When the forming die 200 is raised as shown in FIG. 5A, the lower punch 330 is rotated in the other direction in the filling hole 210 by the lower bearing assembly 320 and lowered to return to its original position. After the core 350 is lifted to the original position by the clamp 340, the helical gear 20 is discharged to the outside while the hopper is put into the outside, and the metal powder is filled in the filling hole 210, and then the above operation. Repeat this.
본 발명은 다양하게 변형될 수 있고 여러 가지 형태를 취할 수 있으며 상기 발명의 상세한 설명에서는 그에 따른 특별한 실시 예에 대해서만 기술하였다. 하지만 본 발명은 상세한 설명에서 언급되는 특별한 형태로 한정되는 것이 아닌 것으로 이해되어야 하며, 오히려 첨부된 청구범위에 의해 정의되는 본 발명의 정신과 범위 내에 있는 모든 변형물과 균등물 및 대체물을 포함하는 것으로 이해되어야 한다.As those skilled in the art would realize, the described embodiments may be modified in various ways, all without departing from the spirit or scope of the present invention. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.
<부호의 설명><Description of the code>
10 : 홀더 20: 헬리컬 기어10 holder 20: helical gear
100 : 상부 금형 110 : 상부 베어링 어셈블리100: upper mold 110: upper bearing assembly
120 : 상부 플레이트 130 : 가이드 펀치120: upper plate 130: guide punch
140 : 가이드 플레이트 150 : 가이드 다이140: guide plate 150: guide die
160 : 상부 펀치 200 : 성형 다이160: upper punch 200: forming die
210 : 충진홀 220 : 다이 플레이트210: filling hole 220: die plate
230 : 가이드 포스트 240 : 고정 스토퍼230: guide post 240: fixed stopper
300 : 하부 금형 310 : 하부 플레이트300: lower mold 310: lower plate
320 : 하부 베어링 어셈블리 330 : 하부 펀치320: lower bearing assembly 330: lower punch
340 : 클램프 350 : 코어340: clamp 350: core
TB : 스러스트 베어링 PH : 핀홀TB: Thrust Bearing PH: Pin Hole
Claims (7)
- 프레스 기계에 홀더에 의해 결합되어 승하강되며 금속 분말로 중심부에 축홀이 형성된 헬리컬 기어를 성형하는 상부 금형과;An upper mold coupled to the press machine by a holder to move up and down, and to form a helical gear having a shaft hole formed in a center of the metal powder;상기 헬리컬 기어와 동일한 내경을 가지며 내측에 암 헬리컬 기어치가 형성되며 금속 분말이 안착되는 충진홀이 구비되고, 일측에 고정 스토퍼를 구비하는 성형 다이; 및A molding die having the same inner diameter as the helical gear and having a female helical gear tooth formed therein and having a filling hole in which metal powder is seated, and having a fixed stopper at one side thereof; And하부 플레이트에 구비된 하부 베어링 어셈블리의 상면 중앙에서 회전 가능하도록 설치되어 상기 성형 다이의 충진홀 하부에 삽입되며, 외측에 상기 성형 다이의 암 헬리컬 기어치와 결합되는 하부 숫 헬리컬 기어치가 형성되고, 길이 방향 중앙에 하부 가이드홀이 형성되는 하부 펀치와, 상기 헬리컬 기어의 축홀을 형성하도록 클램프에 고정되어 상기 클램프의 승강에 따라 상기 상부 금형으로 인입하는 코어를 구비하는 하부 금형으로 이루어지며,It is installed so as to be rotatable in the center of the upper surface of the lower bearing assembly provided in the lower plate is inserted into the bottom of the filling hole of the forming die, the lower male helical gear teeth to be coupled to the female helical gear teeth of the forming die on the outside, the length A lower mold having a lower punch having a lower guide hole formed in the center of the direction, and a core fixed to the clamp to form an axial hole of the helical gear and drawn into the upper mold as the clamp moves up and down;상기 상부 금형은,The upper mold,원기둥 형태로 형성되어 상기 홀더의 저면에 결합되어 회전되는 상부 베어링 어셈블리와;An upper bearing assembly formed in a cylindrical shape and coupled to the bottom surface of the holder to rotate;상기 상부 베어링 어셈블리의 저면과 볼트 결합되고, 관통홀이 형성되는 상부 플레이트와;An upper plate which is bolted to the bottom of the upper bearing assembly and has a through hole formed therein;원기둥 형태로 형성되어 상기 상부 베어링 어셈블리의 저면 중앙에 볼트 결합되어 상기 상부 플레이트의 관통홀을 관통하고, 외측면에 길이 방향으로 숫 나선 기어치가 형성되는 가이드 펀치와;A guide punch formed in a cylindrical shape and bolted to a center of a bottom surface of the upper bearing assembly to penetrate a through hole of the upper plate, and a male gear tooth formed in a longitudinal direction on an outer surface thereof;상기 상부 플레이트의 하단에서 이격 설치되고, 상기 상부 플레이트와 복수의 상부 가이드 포스트에 의해 결합되며, 저면 일측에 상기 성형 다이의 고정 스토퍼와 접촉되는 이동 스토퍼를 구비하고, 상기 상부 금형의 하강시 상기 이동 스토퍼가 고정 스토퍼와 접촉되어 상승되는 가이드 플레이트와;It is installed at the lower end of the upper plate, coupled by the upper plate and the plurality of upper guide posts, and provided with a movement stopper on the bottom side in contact with the fixed stopper of the forming die, the movement when the upper mold descends A guide plate on which the stopper comes in contact with the fixed stopper;상기 가이드 펀치가 관통 결합되도록 결합홀이 형성되고, 상기 결합홀의 내측면에 상기 가이드 펀치의 숫 나선 기어치와 치합되는 암 나선 기어치가 형성되어 상기 가이드 플레이트가 상승될 시 함께 상승되며 상기 가이드 펀치를 회전시키는 가이드 다이; 및A coupling hole is formed so that the guide punch penetrates through, and a female spiral gear tooth engaged with the male spiral gear tooth of the guide punch is formed on the inner side of the coupling hole so as to be raised together when the guide plate is raised. A rotating guide die; And상기 가이드 펀치의 저면 중앙에 결합되고, 상기 하부 금형의 코어가 내부에 삽입되도록 상부 가이드홀이 구비되며, 외측에 상기 성형 다이의 충진홀의 암 헬리컬 기어치와 치합되는 상부 숫 헬리컬 기어치가 형성되는 상부 펀치를 포함하는 것을 특징으로 하는 헬리컬 기어 제조용 분말 야금 프레스 금형.The upper guide hole is coupled to the center of the bottom surface of the guide punch, the upper guide hole is provided so that the core of the lower mold is inserted therein, and the upper male helical gear tooth formed at the outer side is engaged with the female helical gear tooth of the filling hole of the forming die. Powder metallurgy press mold for helical gear manufacturing, characterized in that it comprises a punch.
- 제 1 항에 있어서,The method of claim 1,상기 성형 다이는,The molding die,외측에 다이 플레이트가 구비되고, 상기 가이드 플레이트 및 상부 플레이트를 관통하도록 상기 다이 플레이트에 수직으로 복수의 가이드 포스트가 설치되어 상기 가이드 플레이트 및 상부 플레이트의 승하강을 가이드하며, 상기 가이드 포스트의 하단에 상기 고정 스토퍼가 설치되는 것을 특징으로 하는 헬리컬 기어 제조용 분말 야금 프레스 금형.The die plate is provided on the outside, a plurality of guide posts are installed perpendicular to the die plate to penetrate the guide plate and the upper plate to guide the lifting and lowering of the guide plate and the upper plate, the lower end of the guide post Powder metallurgy press mold for helical gear manufacturing, characterized in that a fixed stopper is installed.
- 제 1 항에 있어서,The method of claim 1,각각의 상기 상부 가이드 포스트는,Each of the upper guide posts,상기 상부 플레이트와 가이드 플레이트 사이에 설치되어 상기 상부 금형의 상승시 상기 가이드 플레이트를 원위치로 복귀시키는 코일 스프링이 각각 설치되는 것을 특징으로 하는 헬리컬 기어 제조용 분말 야금 프레스 금형.Powder metallurgy press mold for manufacturing a helical gear, characterized in that the coil spring is installed between the upper plate and the guide plate to restore the guide plate to its original position when the upper mold is raised.
- 제 1 항에 있어서,The method of claim 1,상기 성형 다이와, 가이드 펀치에는,In the forming die and the guide punch,동심도를 일치시키도록 길이 방향으로 서로 대칭되는 복수의 핀홀이 각각 형성되고, 조립시 각각의 상기 핀홀을 동일 선상으로 위치시킨 상태에서 핀을 삽입한 후 동심도를 일치시킨 후 조립하는 것을 특징으로 하는 헬리컬 기어 제조용 분말 야금 프레스 금형.A plurality of pinholes are formed to be symmetrical to each other in the longitudinal direction so as to match the concentricity, helical, characterized in that the assembly after matching the concentricity after inserting the pins in the state in which each pinhole is located in the same line during assembly Powder metallurgy press mold for gear manufacturing.
- 제 3 항에 있어서,The method of claim 3, wherein상기 가이드 펀치는,The guide punch,상기 상부 금형의 하강시 상기 이동 스토퍼가 고정 스토퍼와 접촉되어 상기 가이드 플레이트가 상승되면 상기 가이드 다이에 의해 일방향 회전되면서 상기 상부 금형을 일방향 회전시켜 상기 충진홀로 인입시키면서 상기 충진홀에 충진된 금속 분말을 가압하고, 상기 상부 금형의 상승시 상기 이동 스토퍼가 고정 스토퍼에서 이격되면서 상기 가이드 플레이트가 상기 코일 스프링의 복원력에 의해 하강되면 상기 가이드 다이에 의해 타방향 회전되면서 상기 상부 금형을 타방향 회전시켜 상기 충진홀에서 배출시키는 것을 특징으로 하는 헬리컬 기어 제조용 분말 야금 프레스 금형.When the moving stopper is brought into contact with the fixed stopper when the upper mold is lowered, the guide plate is raised, and the metal plate is filled in the filling hole while being rotated in one direction by the guide die to rotate the upper mold in one direction to enter the filling hole. Pressurizing, when the guide plate is lowered by the restoring force of the coil spring while the moving stopper is spaced apart from the fixed stopper when the upper mold is raised, the other side is rotated in the other direction by the guide die and the filling is performed by rotating the upper mold in the other direction. Powder metallurgy press mold for helical gear manufacturing, characterized in that the discharge from the hole.
- 제 1 항에 있어서,The method of claim 1,상기 성형 다이는,The molding die,상기 헬리컴 기어의 가압이 완료되면 자체적으로 하강되면서 상기 하부 금형의 하부 펀치를 상기 충진홀로 일방향으로 회전 인입시켜 상기 충진홀의 헬리컴 기어를 회전시켜 배출시키고, 배출이 완료되면 자체적으로 상승되면서 상기 하부 금형의 하부 펀치를 상기 충진홀에서 타방향으로 회전 배출시켜 원위치시키는 것을 특징으로 하는 헬리컬 기어 제조용 분말 야금 프레스 금형.When the pressurization of the helicom gear is completed, while lowering itself, the lower punch of the lower mold is rotated in one direction to the filling hole to rotate and discharge the helicom gear of the filling hole. A powder metallurgical press mold for manufacturing a helical gear, wherein the lower punch of the mold is rotated and discharged in the other direction from the filling hole.
- 제 1 항에 있어서,The method of claim 1,상기 가이드 펀치의 숫 나선 기어치, 가이드 다이의 암 나선 기어치, 성형 다이의 암 헬리컬 기어치, 하부 펀치의 하부 숫 헬리컬 기어치 및 상부 펀치의 상부 숫 헬리컬 기어치는,The male spiral gear teeth of the guide punch, the female spiral gear teeth of the guide die, the female helical gear teeth of the forming die, the lower male helical gear teeth of the lower punch and the upper male helical gear teeth of the upper punch,일측방향으로 동일한 비틀림 각도를 가지는 것을 특징으로 하는 헬리컬 기어 제조용 분말 야금 프레스 금형.Powder metallurgy press die for helical gear manufacturing, characterized in that it has the same twist angle in one direction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2016-0085528 | 2016-07-06 | ||
KR1020160085528A KR101692984B1 (en) | 2016-07-06 | 2016-07-06 | Powder metallurgy press die for manufacuturing helical gear |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018008967A1 true WO2018008967A1 (en) | 2018-01-11 |
Family
ID=57990466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2017/007160 WO2018008967A1 (en) | 2016-07-06 | 2017-07-05 | Powder metallurgy press mold for manufacturing helical gear |
Country Status (2)
Country | Link |
---|---|
KR (1) | KR101692984B1 (en) |
WO (1) | WO2018008967A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108607890A (en) * | 2018-07-04 | 2018-10-02 | 天津普天单向器有限公司 | A kind of novel die of rotary squeezing helical teeth internal gear |
CN111318691A (en) * | 2020-01-09 | 2020-06-23 | 太原开元智能装备有限公司 | Radiation ring pressing device |
CN112387970A (en) * | 2020-10-14 | 2021-02-23 | 韦熙斌 | Gear profiling equipment for metal powder metallurgy |
US11184659B2 (en) | 2016-11-10 | 2021-11-23 | Caavo Inc | Soft universal remote controller |
KR102357241B1 (en) * | 2021-11-01 | 2022-02-08 | 최재성 | Method For Manufacturing Powder Metallurgical Product Using Compact And Powder Metallurgical Product Using Molded Article Manufactured Thereby |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101932708B1 (en) * | 2017-07-06 | 2018-12-27 | 주식회사 엔에스티메탈 | Method for manufacturing double helical member |
KR101904849B1 (en) | 2017-07-11 | 2018-10-05 | (주)신영유니크 | Upper Die Control and Rotating Mechanism In Centrifugal Casting Machine |
KR102375151B1 (en) * | 2017-11-29 | 2022-03-16 | 현대자동차주식회사 | Compacting apparatus of helical gear |
CN109175357B (en) * | 2018-08-20 | 2021-07-09 | 长钰模具(苏州)有限公司 | Spiral gear ring mold |
CN109093112B (en) * | 2018-11-02 | 2019-10-01 | 吉林大学 | A kind of mould bases for powder metallurgy automobile engine piston |
CN111069595A (en) * | 2019-12-30 | 2020-04-28 | 南通力友液压机制造有限公司 | Special forming hydraulic press for tantalum-niobium strips |
KR102353579B1 (en) | 2020-08-10 | 2022-01-21 | (주)지케이에스 | Powder compacting apparatus for multistage product |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09263803A (en) * | 1996-03-25 | 1997-10-07 | Mitsubishi Materials Corp | Molding device for green compact of helical gear and mold adjusting jig |
JP2000079419A (en) * | 1998-09-04 | 2000-03-21 | Noguchi Seisakusho:Kk | Press die and parts for press die |
JP2000510048A (en) * | 1996-05-09 | 2000-08-08 | スタックポール・リミテッド | Opposite double helical gears and method with molding powder |
JP2001073003A (en) * | 1999-09-09 | 2001-03-21 | Honda Motor Co Ltd | Method for compacting helical gear |
JP2013215790A (en) * | 2012-04-11 | 2013-10-24 | Sumitomo Electric Sintered Alloy Ltd | Device for powder forming helical gear |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05195011A (en) | 1991-08-17 | 1993-08-03 | Werkzeugbau Alvier Ag | Modular device for press-molding workpiece having profile of spiral shape |
CN201208648Y (en) | 2008-06-16 | 2009-03-18 | 吴国隆 | Upper punch pressure automatic contraposition and locating detection apparatus for powder metallurgical molding helical gear |
-
2016
- 2016-07-06 KR KR1020160085528A patent/KR101692984B1/en active IP Right Grant
-
2017
- 2017-07-05 WO PCT/KR2017/007160 patent/WO2018008967A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09263803A (en) * | 1996-03-25 | 1997-10-07 | Mitsubishi Materials Corp | Molding device for green compact of helical gear and mold adjusting jig |
JP2000510048A (en) * | 1996-05-09 | 2000-08-08 | スタックポール・リミテッド | Opposite double helical gears and method with molding powder |
JP2000079419A (en) * | 1998-09-04 | 2000-03-21 | Noguchi Seisakusho:Kk | Press die and parts for press die |
JP2001073003A (en) * | 1999-09-09 | 2001-03-21 | Honda Motor Co Ltd | Method for compacting helical gear |
JP2013215790A (en) * | 2012-04-11 | 2013-10-24 | Sumitomo Electric Sintered Alloy Ltd | Device for powder forming helical gear |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11184659B2 (en) | 2016-11-10 | 2021-11-23 | Caavo Inc | Soft universal remote controller |
CN108607890A (en) * | 2018-07-04 | 2018-10-02 | 天津普天单向器有限公司 | A kind of novel die of rotary squeezing helical teeth internal gear |
CN108607890B (en) * | 2018-07-04 | 2024-03-26 | 天津普天单向器有限公司 | Die for rotationally extruding helical-tooth internal gear |
CN111318691A (en) * | 2020-01-09 | 2020-06-23 | 太原开元智能装备有限公司 | Radiation ring pressing device |
CN112387970A (en) * | 2020-10-14 | 2021-02-23 | 韦熙斌 | Gear profiling equipment for metal powder metallurgy |
KR102357241B1 (en) * | 2021-11-01 | 2022-02-08 | 최재성 | Method For Manufacturing Powder Metallurgical Product Using Compact And Powder Metallurgical Product Using Molded Article Manufactured Thereby |
Also Published As
Publication number | Publication date |
---|---|
KR101692984B1 (en) | 2017-01-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2018008967A1 (en) | Powder metallurgy press mold for manufacturing helical gear | |
WO2009145538A2 (en) | Variable mold apparatus for forming stretch sheets and a stretch sheet forming method | |
US5655400A (en) | Progressive die apparatus and method for making a lead alloy battery terminal | |
CN110508643B (en) | Plate bending press | |
US5632173A (en) | Apparatus and method for cold forming a ring on a lead alloy battery terminal | |
CN111229955B (en) | Riveting device for inner plate of lever block wrench and brake cover | |
CN110102632B (en) | Die for side positioning | |
RU2057648C1 (en) | Punching machine for multicavity seamless stamping | |
WO2017018630A1 (en) | Method for manufacturing pinch yoke of automotive steering system by using cold former | |
WO2011162455A1 (en) | Horizontal forging device for thrust shaft for vessel | |
CN109047361B (en) | Lateral extrusion forming die, forming device with non-straight-through concave tooth shape and method | |
CN208437596U (en) | A kind of truck drive shaft spline forging mold | |
JPS5844932A (en) | Manufacture of outer ring of universal joint | |
CN102950187B (en) | Novel multi-station automatic stretching punching machine | |
CN217343241U (en) | Ball lock shell riveting equipment | |
CN109500246A (en) | A kind of number accessory die for processing | |
KR0177003B1 (en) | Multi-stage forging apparatus | |
CN115382966A (en) | Stamping die for automobile wheel cover and stamping method thereof | |
CN110640037B (en) | Stamping forming equipment of high accuracy pay-off | |
CN211727183U (en) | Stamping die of manipulator linkage in mould | |
CN219025728U (en) | Stamping die with automatic discharging assembly | |
CN213476483U (en) | Inner convex ring buckle spinning forming die and equipment for paper pulp molding product | |
JP3448657B2 (en) | Multistage forging machine | |
CN215496364U (en) | Process ring applied to annular ferrite magnetic core | |
JP2016144813A (en) | Roller forming device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17824523 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 17824523 Country of ref document: EP Kind code of ref document: A1 |