WO2021248820A1 - Procédé de fabrication d'élément en forme de u - Google Patents

Procédé de fabrication d'élément en forme de u Download PDF

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Publication number
WO2021248820A1
WO2021248820A1 PCT/CN2020/129093 CN2020129093W WO2021248820A1 WO 2021248820 A1 WO2021248820 A1 WO 2021248820A1 CN 2020129093 W CN2020129093 W CN 2020129093W WO 2021248820 A1 WO2021248820 A1 WO 2021248820A1
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WO
WIPO (PCT)
Prior art keywords
inner contour
contour
manufacturing
forming
roller
Prior art date
Application number
PCT/CN2020/129093
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English (en)
Chinese (zh)
Inventor
王怀计
黄屹立
张海姣
Original Assignee
福立旺精密机电（中国）股份有限公司
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Publication of WO2021248820A1 publication Critical patent/WO2021248820A1/fr

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Classifications

    • 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
    • B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
    • 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
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends

Definitions

  • This application relates to the technical field of mechanical processing, for example, to a manufacturing method of a U-shaped part.
  • U-shaped piece in which the main body is provided with an inner contour in the extending direction, the area between the inner contour and the outer contour is slotted in the middle, and through holes are distributed in the groove, and several convex structures are distributed on both the inner contour and the outer contour.
  • U-shaped parts require high dimensional tolerances, ranging from ⁇ 0.05mm. Due to the narrow area between the inner and outer contours, the traditional stamping production method usually forms the inner and outer contours at one time, resulting in a formed U-shaped part The accuracy is poor, and the qualified rate of finished products is low, which cannot meet the design requirements.
  • the present application proposes a method for manufacturing U-shaped parts, which solves the technical problems of poor processing accuracy of U-shaped parts, low qualified rate of finished products, and inability to meet design requirements.
  • the embodiment of the present application provides a method for manufacturing a U-shaped part, which includes the following steps:
  • An inner contour is formed on the material belt, and then an outer contour is formed on the outer periphery of the inner contour on the material belt to obtain a molded part;
  • a groove is formed in the area between the inner contour and the outer contour of the molded part, and a through hole is formed at the bottom of the groove to obtain a flat product;
  • the obtained flat product is bent by a roller pressing machine, which includes a roller pressing assembly and a stop assembly, and the stop assembly is arranged at the exit position of the output end of the roller pressing assembly, and the roller pressing assembly includes With multiple pairs of rollers, the roller near the output end of the press roller is biased toward the limiting assembly, the flat product is bent after the roller, and the bent product leaves the end of the roller first.
  • the stop of the stop assembly the other end of the bent product is bent toward the roller of the stop assembly, and the flat product forms a U-shaped structure to obtain a U-shaped piece.
  • the manufacturing method of the U-shaped part is to first form the inner contour on the material belt, and then form the outer contour on the outer periphery of the inner contour on the material belt to obtain the molded part.
  • the steps of forming the inner contour and then the outer contour are adopted to ensure The accuracy and yield of the product reduce the chance of fracture and dimensional deviation of the slender plane composed of the inner and outer contours during the stamping process; a groove is formed in the area between the inner and outer contours of the molded part, and the groove is formed in the groove A through hole is formed at the bottom of the groove to obtain a flat product; by adjusting the roller assembly of the press roller and simply setting a stop assembly at the exit position, the flat product can be easily bent into a U-shaped structure to obtain a U-shaped part;
  • the method has high stamping accuracy and simple bending steps, and the U-shaped parts produced by the manufacturing method have high quality and yield.
  • the step of forming an inner contour on the material belt includes:
  • a first half inner contour is formed at the first preset position of the material strip, and a second half inner contour is formed at the second predetermined position of the material belt.
  • the first half inner contour and the second half inner contour form the An inner contour, a rib is reserved in the inner contour, and the rib is located between the first half inner contour and the second half inner contour.
  • the first half inner contour and the second half inner contour form the inner contour.
  • Two moldings realize the molding of the inner contour, avoiding the problem of low accuracy caused by the inner contour of one molding, and reserve ribs in the inner contour for subsequent processing.
  • the step of forming a first half inner contour at a first preset position of the material belt, and forming a second half inner contour at a second preset position of the material belt include:
  • Half-cut forming the first half-inner contour at the first preset position of the material strip, and then punch the half-cut part to form the first half-inner contour
  • the second half-inner contour is formed by half-cutting at the second preset position of the material strip, and then the half-shearing part is punched to form the second half-inner contour.
  • the first half of the inner contour and the second half of the inner contour are cut and then punched to form the inner contour and ribs, which can improve the accuracy of the product, such as the accuracy of the convex structure part, and avoid the low accuracy caused by the inner contour formed at one time.
  • the problem can also reduce the possibility that the material is broken due to the less material at the connecting part of the rib and the inner contour caused by the inner contour of the one-time molding.
  • a first positioning hole is punched on the rib, the first positioning hole is used for CNC positioning, and the CNC step is used for forming the groove and the Through hole.
  • the rib is removed.
  • the ribs are removed to remove the non-product area to obtain a complete inner contour.
  • the step of forming an outer contour on the outer periphery of the inner contour on the material belt includes:
  • the outer contour is formed by half-cutting on the outer periphery of the inner contour, and the half-cut portion is punched to obtain the outer contour.
  • a second positioning hole is punched in the non-product area of the strip.
  • a second positioning hole is punched in the non-product area of the material belt, and the material belt can be positioned through the second positioning hole, so as to avoid the deviation of the material belt when forming the inner and outer contours and lead to the forming deviation.
  • the position where the rib is connected to the inner contour is pre-punched on the front side, and at the stage of removing the rib, Perform reverse punching on the molded part.
  • the manufacturing method of the U-shaped part proposed in this application adopts the steps of first forming the inner contour and then forming the outer contour, and combines the sequence of the inner and outer contours first half-cutting and then punching, ensuring the accuracy and yield of the product, and reducing the inner contour and
  • the slender plane formed by the outer contour is likely to break and size deviation during the stamping process; by adjusting the roller assembly of the press roller and simply setting the stop assembly at the exit position, the flat product can be easily bent into a U-shaped structure.
  • the method has high stamping accuracy and simple bending steps, and the U-shaped parts produced by the manufacturing method have high product quality and yield.
  • Figure 1 is a top view of the U-shaped piece provided by this application.
  • Figure 2 is a flow chart of the manufacturing method of the U-shaped piece provided by the present application.
  • Fig. 3 is a schematic structural view of punching a second positioning hole in the non-product area of the material tape provided by the present application;
  • Figure 4 is a schematic diagram of the structure of the pre-stamping marks on the front surface of the material strip provided by the present application;
  • Fig. 5 is a structural schematic diagram of forming a first half inner contour on a material belt provided by the present application
  • Fig. 6 is a structural schematic diagram of forming a second half inner contour on a material belt provided by the present application.
  • Fig. 7 is a structural schematic diagram of forming a first positioning hole in the rib portion provided by the present application.
  • Fig. 8 is a structural schematic diagram of forming an outer contour at the rib portion provided by the present application.
  • Figure 9 is a schematic diagram of the structure of the planar product provided by the present application.
  • FIG. 10 is a schematic diagram of the structure of the flat product provided by the present application during the rolling and bending process
  • Fig. 11 is a structural schematic diagram of a flat product provided by the present application that is rolled into a U-shaped piece.
  • connection shall be interpreted broadly, for example, they may be fixedly connected, detachably connected, or integrated ; It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components.
  • connection shall be interpreted broadly, for example, they may be fixedly connected, detachably connected, or integrated ; It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components.
  • the "above” or “below” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
  • “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or merely indicating that the level of the first feature is higher than that of the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • This embodiment provides a method for manufacturing a U-shaped piece, which is used to prepare a U-shaped piece.
  • the U-shaped piece 100 is provided with an inner contour 1, and the area between the inner contour 1 and the outer contour 2 is provided with a concave
  • the groove 4, the groove bottom of the groove 4 is provided with a plurality of through holes 5, and the outer contour 2 and the inner contour 1 of the U-shaped piece 100 are both racetrack-shaped structures.
  • the edges of the inner contour 1 and the outer contour 2 of the U-shaped piece 100 are both provided with a plurality of convex structures 6 arranged at intervals to facilitate the cooperation with other components.
  • the manufacturing method of the U-shaped piece includes the following steps:
  • Two second positioning holes 201 are punched in the non-product area of the material belt 200, and the material belt 200 can be positioned through the second positioning holes 201 to avoid the deviation of the material belt 200 when the inner contour 1 and the outer contour 2 are formed. .
  • the first half of the inner contour 11 is formed by first half-cutting the first half of the inner contour 11 at a first preset position on the material belt 200, and then punching the half-cut part to form the first half.
  • the inner contour 11 is matched by half-cutting and punching, so as to avoid forming the first half inner contour 11 at one time to reduce the accuracy of the product.
  • the product accuracy can be improved, such as the accuracy of the convex structure 6, avoiding the problem of low accuracy caused by forming the inner contour 11 at one time, and can also reduce One-time molding of the inner contour 11 may cause the material to be broken due to the fact that the rib 3 and the inner contour 1 are connected with less material.
  • the position where the rib 3 is connected to the inner contour 1 is pre-punched, and in the step of removing the rib 3, the molded part is processed Back stamping.
  • the burr phenomenon caused by the removal of the rib 3 is improved.
  • the front side pre-punching is to punch out a pre-stamping mark 202 at the position where the rib 3 is connected to the inner contour 1 (see FIG. 4), so that the burr phenomenon at the corresponding position can be improved during the back side punching process.
  • the connection strength between the rib 3 and the inner contour 1 after the frontal pre-punching can still meet the requirements.
  • the first half of the inner contour 11 and the second half of the inner contour 12 form the inner contour 1.
  • the inner contour 1 can be formed by step-by-step molding to avoid reducing the accuracy of the inner contour 1. Prepared for subsequent process processing.
  • the first positioning hole 31 is used for CNC positioning, so as to facilitate subsequent CNC precision milling and milling positioning.
  • the outer periphery of the inner contour 1 is half-cut to form the outer contour 2, and the half-cut part is punched to obtain the outer contour 2, and then the molded part is obtained (see Fig. 8).
  • S1-S5 is a continuous stamping process.
  • the inner contour 1 and the outer contour 2 are formed by continuous stamping, and the inner contour 1 and the outer contour 2 can be formed in multiple steps on the same stamping device.
  • the obtained molded part is ground.
  • vibration grinding is used to grind the burrs caused by continuous punching.
  • the molded part After grinding, the molded part can be leveled.
  • the molded part is leveled by the press roller 400 to avoid the unevenness of the molded part caused by the above-mentioned process, and to ensure the molded part in the subsequent process. Processing accuracy (see Figure 10 and Figure 11 for the press roll machine 400).
  • a groove 4 is formed in the area between the inner contour 1 and the outer contour 2 of the molded part, and a through hole 5 is formed at the bottom of the groove 4 to obtain a flat product 300 (see FIG. 9).
  • the groove 4 and the through hole 5 are milled on the molded part by CNC.
  • magnetic grinding is used to finely polish the groove 4 and the through hole 5 milled by CNC to meet the requirements of machining accuracy.
  • the flat product 300 is leveled by the roller press 400 to ensure the flatness of the flat product 300.
  • the rib 3 is removed to remove the non-product area to obtain a complete inner contour 1, and then to obtain a flat product 300.
  • the obtained flat product 300 is bent by a roller press 400.
  • the stop assembly 401 of the roller press 400 is set at the exit position of the roller assembly and forms a height difference with the roller 4021 at the exit position.
  • the roller assembly includes multiple For the roller 4021, the roller 4021 of the pressing roller 400 near the exit position is biased toward the stop assembly 401, the flat product 300 is bent after the roller 4021 of the bias stop assembly 401, and the bent product leaves one end of the roller 4021 first First, it contacts the stop assembly 401, and is temporarily fixed by the force generated between the stop assembly 401. After the bent product leaves the roller 4021, when the end leaves the roller 4021, the flat product 300 forms a U-shaped structure to obtain U-shaped pieces.
  • the roller press 400 is used to roll the flat product 300.
  • the specific method is: adjust the inlet and outlet parameters of the press 400 to an appropriate difference, and the stop assembly 401 is set in the press Above the last pair of rollers 4021 of the roller 400 (that is, the pair of rollers 4021 near the output end of the press 400), move the last pair of rollers 4021 upwards to deflect the stop assembly 401, so that the flat product 300 passes.
  • the last pair of rollers 4021 are bent out of a partial arc, and under the stopper action of the stopper assembly 401 placed at the exit of the roller press 400, the U-shaped end of the product is blocked by the stopper assembly 401 until the entire After the product is rolled, it is forced to leave the exit of the press roller 400.
  • the stop component 401 is a baffle, which has a simple structure and is easy to prepare.
  • the roller press 400 In the leveling step, all the rollers 4021 of the roller press 400 are set to the same height to achieve the leveling purpose. As mentioned above, the roller press 400 is used in both the leveling step and the bending step, which makes the processing more convenient.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un élément en forme de U (100), comprenant les étapes suivantes : formation d'un contour interne (1) sur une bande de matériau (200), puis formation d'un contour externe (2) sur la périphérie externe du contour interne (1) sur la bande de matériau (200), de façon à garantir la précision et le rendement d'un produit, réduire la probabilité de fracture et d'écart dimensionnel d'un plan mince composé du contour interne (1) et du contour externe (2) au cours d'un processus d'estampage ; formation d'une rainure (4) dans une zone située entre le contour interne (1) et le contour externe (2) d'un élément moulé (100), et formation d'un trou traversant (5) au fond de la rainure (4), de façon à obtenir un produit plan (300) ; et laminage du produit plat obtenu (300) au moyen d'une presse à rouleaux (400), et par disposition de la presse à rouleaux (400) et fourniture d'un ensemble de butée (401) à une sortie de la presse à rouleaux (400), conduite d'un cintrage du produit plan (300) dans la direction de l'ensemble de butée (401) puis formation d'une structure en forme de U de façon à obtenir l'élément en forme de U (100). Selon le procédé de fabrication de l'élément en forme de U (100), la qualité et le rendement du produit de l'élément en forme de U fabriqué (100) peuvent être élevés, et la fabrication est simple et pratique.
PCT/CN2020/129093 2020-06-11 2020-11-16 Procédé de fabrication d'élément en forme de u WO2021248820A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010529896.8 2020-06-11
CN202010529896.8A CN113798395B (zh) 2020-06-11 2020-06-11 一种u型件的制造方法

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US4770283A (en) * 1986-03-21 1988-09-13 Hoerbiger & Co. Friction ring for clutches or brakes, and a method and device for producing the friction ring
CN101626852A (zh) * 2007-03-12 2010-01-13 株式会社金光 环状构件的制造方法
CN104014642A (zh) * 2014-06-18 2014-09-03 苏州旭创精密模具有限公司 一种紧固件加工方法
CN105598354A (zh) * 2015-12-29 2016-05-25 杭州东华链条集团有限公司 一种cvt链条链板自动连续冲压成型工艺
CN106216483A (zh) * 2016-07-29 2016-12-14 领胜城科技（江苏）有限公司 一种料带精密定位的冲压工艺
CN107186117A (zh) * 2017-06-16 2017-09-22 航天精工股份有限公司 一种环状物连续弯曲成型设备
CN107597968A (zh) * 2017-10-27 2018-01-19 东莞市健耀烨电子科技有限公司 一种弯切一体化的机器及其方法

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US2932880A (en) * 1955-02-24 1960-04-19 Western Electric Co Method of making electrical switching devices
JP2005041458A (ja) * 2003-07-22 2005-02-17 Jin Hee Kang 改善されたピラーアンカー及びその製造方法
KR100902543B1 (ko) * 2007-09-10 2009-06-15 양창현 파이프 행거의 지지부재 제조방법 및 제조금형
CN104014640A (zh) * 2014-04-22 2014-09-03 重庆三峡学院 一种带孔弧形帽型材冷弯工艺及其生产系统
CN110918778A (zh) * 2019-12-19 2020-03-27 浙江裕泰汽车配件有限公司 一种簧片螺母冲压装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4770283A (en) * 1986-03-21 1988-09-13 Hoerbiger & Co. Friction ring for clutches or brakes, and a method and device for producing the friction ring
CN101626852A (zh) * 2007-03-12 2010-01-13 株式会社金光 环状构件的制造方法
CN104014642A (zh) * 2014-06-18 2014-09-03 苏州旭创精密模具有限公司 一种紧固件加工方法
CN105598354A (zh) * 2015-12-29 2016-05-25 杭州东华链条集团有限公司 一种cvt链条链板自动连续冲压成型工艺
CN106216483A (zh) * 2016-07-29 2016-12-14 领胜城科技（江苏）有限公司 一种料带精密定位的冲压工艺
CN107186117A (zh) * 2017-06-16 2017-09-22 航天精工股份有限公司 一种环状物连续弯曲成型设备
CN107597968A (zh) * 2017-10-27 2018-01-19 东莞市健耀烨电子科技有限公司 一种弯切一体化的机器及其方法

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