201026555 六、發明說明： 【發明所屬之技術領域】201026555 VI. Description of the invention: [Technical field to which the invention belongs]
I 本發明係關於自行車曲柄，尤其係指一種自行車中空曲柄製造方法。 1 【先前技術】 自行車技術強調輕量化，尤其是競技用自行車，對於重量要求更是鎖 鍊必計，在輕量化的同時，如何兼顧強度與耐用度，更突顯出輕量化之難 度，各種達到輕量化的技術更是百家爭鳴，紛紛搶佔-席之地。其中自行 車中空技術可謂輕量化技術之代表，請參閱中華民國 _腦4號『自行車用中空曲柄及其製造方法』，其係結合缚造與熱^ 以獲得輕量、高強度且設計自由度大的結構及其製造方法。係於缚造中空 曲柄的模具中裝人製作砂模的砂芯進行鎊造。經機械加工開Μ取出空心 帽成砂芯的砂子，形成所輕製成^的曲柄轉。也可在置入有 砂芯的狀態下進行加熱型鍛，經加壓鍛造後開孔，再取出空心中構成砂芯 的砂子。由此製作成高強度的中空曲柄。然而，此習用之曲柄製造方法仍 © 存在下顺點：鑄造成之曲柄，無法進行表面纽，無法增加表面硬度及 美觀，此外，中空部分填人砂子，必須另外加工絲出，而且中空部分與 踏板安裝孔純，造成踏板安航尺寸精度不佳且強度減弱。另外，加工 工序煩雜造成加工工時增加與製造成本增加，不利於產品之競爭力。 糾請參閱中華民國專利中請案號第疆〇1847號r自行車中空曲柄 減重之製造方法』，其係關於一種自行車中空曲柄減重之製造方法，該製法 係選取圓棒的棒材進行㈣擠锻細泣以形成初胚，她—端内形成一 開槽以注入填充液’再配合塞設蓋體而封閉，其次，整個她進行锻壓成 201026555 伽城型胚，成型胚鐵《漏孔以取出填充液、切斷蓋體即為強度佳、可 進行表面陽極處理的曲柄半成品。此外，此習用之曲柄製造方法仍存在下 s 舰點：注人填充驗必須塞蓋體以免填綠流出，鑽漏孔後必須再取出 填充液，最後仍需切斷蓋體，如此繁複之工序造成加工工時増加與製造成 本增加，非常補於產品之齡力。故上述料之曲補造方法仍存在各 種缺點故其實用性相當不足’有必要加以研發改善以提供更佳之製造方 法。 . Φ 【發明内容】 本㈣之主要目的係在於提供-種自行車中空_製造方法其可改 善習用之曲柄加工程序複雜，成本過高等缺失。 為達成前述之發明目的，本發明係包括下列步驟： 她成型：將金屬素材置於初轉具巾，锻造成型為實心之初胚； 中空成型：將初胚置於中空模具中，並以沖頭成型中空部製成為中 空初胚； ° 注水特或填冰：將摊人t空部，並純冷綠成冰；或是填入與 中空部形狀相符之冰； 賴成型™水之巾空她置人成贿具中，純麵成型，同 時將中空部封閉，並製成為曲柄半成品； *後加工處理：㈣柄半成品加工心抽安裝孔及雜安裝孔，並於中空 部下端加工穿孔，該穿孔射空部相通，並加以熱處理，水即可由穿孔流 出，完成曲柄成品。 本發明具有叮伽：锻造姻之_可進行陽極處料表面處理， 201026555 增加產品強度及美觀性；水雜處理時自紐出無須手練㈣充物加 工流_少；㈣成翻時射料_，無他賴手段，加工流程 簡化，亦無強度降低與尺寸精度差之問題；簡化加工流程後，製造成本及 加工工時降低，產品競爭力大幅提升。 丨：. - 目此本個可贼-_當具冑實雜錢步性之個，相當值得產 業界來推廣’並公諸於社會大眾_。 【實施方式】 ® 本發明係有關於—種自行車中空曲柄製造方法，請參閱第-圓至第八 圖所示’其係本發明之第—實施例，第—圖係本發明自行車中空曲柄製造 方法之流程示意圖，本發明係包括下列步驟： 初胚成型sn首先將金屬素材置於她模具中，一般來說金屬素材為 齡金’亦可為其他合金，請參閱第二圓所示，初胚模具包括一上模〇ι 及一下⑽，運用習知之2D(二向)锻造方式，將金屬素材锻造成型為實 心之初胚03，她〇3主要觸柄纽相細，_是曲_部本實 ❹施例以右曲柄為例’頭部係包括與齒盤（圖未示）結合之爪部，如第 所不，其他實施例亦可為左曲柄； 中空成型S2 :請參閲細騎示，將初胚Q3置於中空模ΜI The present invention relates to a bicycle crank, and more particularly to a bicycle hollow crank manufacturing method. 1 [Prior Art] Bicycle technology emphasizes lightweight, especially for competitive bicycles. For the weight requirement, it is a chain lock. In terms of weight reduction, how to balance strength and durability, and highlight the difficulty of weight reduction. Quantitative technology is even more contending, and they have seized the place. Among them, bicycle hollow technology can be described as a representative of lightweight technology. Please refer to the Republic of China _ brain 4 "Broken crank for bicycles and its manufacturing method", which combines binding and heat to achieve light weight, high strength and large design freedom. Structure and its manufacturing method. A sand core made of a sand mold is placed in a mold that is bound by a hollow crank to be made of pounds. After machining, the hollow cap is taken out into the sand of the sand core to form a crank turn that is lightly formed. It is also possible to perform heating swaging in a state in which a sand core is placed, and to perform hole drilling after press forging, and then take out sand which constitutes a sand core in the hollow. This produces a high-strength hollow crank. However, this conventional crank manufacturing method still has the following advantages: casting the crank, can not carry out the surface button, can not increase the surface hardness and aesthetics, in addition, the hollow part filled with sand, must be processed separately, and the hollow part and The pedal mounting hole is pure, resulting in poor pedaling accuracy and weakened strength. In addition, the complicated processing steps result in an increase in processing time and an increase in manufacturing cost, which is disadvantageous to the competitiveness of the product. Please refer to the method of manufacturing the hollow crank crank weight reduction of the bicycle No. 1847 of the Republic of China Patent No. 1847, which relates to a method for manufacturing a hollow crank weight reduction of a bicycle, which is carried out by selecting a bar of a round bar (4) Squeezing and weeping to form the primordial embryo, she forms a groove in the end to inject the filling liquid and then closes it with the plugging cap. Secondly, she is forged into a 201026555 galactic embryo, forming the embryo iron The hole is used to take out the filling liquid and cut the lid body, which is a crank semi-finished product which is excellent in strength and can be surface anodized. In addition, this conventional crank manufacturing method still exists under the s ship point: the filling test must be plugged to avoid the green outflow, the filling liquid must be removed after drilling the hole, and finally the cover needs to be cut, so complicated process This will increase the processing time and increase the manufacturing cost, which is very important to the age of the product. Therefore, there are still various shortcomings in the method of making the above-mentioned materials, and the practicality thereof is quite insufficient. It is necessary to develop and improve to provide a better manufacturing method. Φ [Summary of the Invention] The main purpose of this (4) is to provide a bicycle hollow manufacturing method which can be modified to have a complicated crank processing procedure, and the cost is too high. In order to achieve the aforementioned object, the present invention comprises the following steps: She molding: placing the metal material in the initial conversion towel, forging into a solid embryo; hollow molding: placing the initial embryo in a hollow mold, and punching The head forming hollow portion is made into a hollow primordial; ° Water injection or ice filling: the person will be covered with empty parts and purely cold green into ice; or filled with ice that conforms to the shape of the hollow portion; Lai MoldingTM Water Towel Empty She puts the person into a bribe, pure face molding, and at the same time closes the hollow part and makes it into a semi-finished crank. * Post-processing: (4) Handle semi-finished products are processed with a heart-shaped mounting hole and a miscellaneous mounting hole, and the perforation is processed at the lower end of the hollow portion. The perforated shots are connected and heat treated, and the water can flow out through the perforations to complete the finished crank. The invention has the sangha: the forged marriage _ can carry out the surface treatment of the anode material, 201026555 increases the product strength and the appearance; the water miscellaneous treatment does not need to be hand-trained (4) the filling processing flow _ less; (4) the turning material _ There is no other means, the processing flow is simplified, and there is no problem of reduced strength and poor dimensional accuracy; after simplifying the processing flow, manufacturing costs and processing time are reduced, and product competitiveness is greatly improved.丨:. - This is a thief - _ is a sturdy and sloppy step, it is worthy of the industry to promote ‘and publicize to the public _. [Embodiment] The present invention relates to a method for manufacturing a hollow crank of a bicycle. Please refer to the first to the eighth embodiment of the present invention, which is a first embodiment of the present invention. Schematic diagram of the method, the present invention includes the following steps: The initial embryo forming sn first places the metal material in her mold, generally the metal material is the age of gold 'may be other alloys, please refer to the second circle, initially The embryo mold consists of an upper mold 〇ι and a lower (10). Using the conventional 2D (two-way) forging method, the metal material is forged into a solid embryo 03, and her 〇3 main touch handle is fine, _ is a song _ In the embodiment, the right crank is taken as an example. The head portion includes a claw portion combined with a toothed disc (not shown). If not, the other embodiments may also be a left crank. Hollow molding S2: Please refer to Riding the display, placing the primordial Q3 in a hollow mold
模具包括-上模η及-下模12，並以沖頭13由 中J 141，製成為中空她14; 尾孩i中工部 部=轉賴3: _第五咖’嫩人中空初胚a u i是，^1^冰15,使物她14之巾填滿冰】 或疋將㈣部141形狀相符之糾直接填人中_41内. 201026555 I - 鍛壓成型S4 :請參閱第六圖所示，將充滿冰15之中空初胚丨4置入成 型模具中，成型模具包括—上模21及一下模四，，加以锻壓成型，同時 將中空部ι41由尾部賴，並製成域柄半成品23，曲柄半成品23之頭 部與尾娜成高低落差，此時巾_ 141 _存有冰15或融化之水； 後加王處理S5 :請參_七_示，將曲财成品23加工心轴安裝 孔31及踏板安裝孔32，並於中空部141下端加工穿孔33，該穿孔犯與 巾工。M41相通，製成為曲柄成品3G，將曲柄成品3Q熱處理，冰融化 ®成水即自動由穿孔33流出，中空部⑷藉由穿孔33不致形成真空，避免 熱處理時產生爆炸之風險。 本發明之第二實施例，請參閱第九、十圖所示其中與第—實施例相 同者’恕不再贅述，僅就相異處說明。第九圖係本發明第二實施例之流程 不意圖，係包括下列步驟：初胚及中空成型su、注水冷康/填冰犯、鍛 壓成型S13、後加卫處理S14。其中初胚及中空成型su :請參閱第十圖所 不，將金屬素材置於初胚模具中鍛造成型，初胚模具包括—上模“及一 ❹下模42，並以沖頭43成型中空部，由3队三向)锻造方式，製成為中空初 胚44。其他後續步驟：注水冷滚/填冰S12、賴成型S13、後加工處理 SU ’與第-實施例相同，請參閱上述說明。本發明加工流程簡化，降低 製造成本及加工工時，因而產品辭力大幅提升。 由上所述者僅為用以解釋本發明之較佳實施例並非企圖據以對本發 做任何形式上之關，是以，凡有在相同之發鴨神下所做有關本發明 之任何修飾或變更者，㈣聽括在本發㈣祕護之範_内。 综上所述，本發明自行車中空曲柄製造方法在實用性及成本效益上， 確實疋&全符合產業上發展所需，且所娜之方法發财是具有前所未有 201026555 的創新方法’所以其具有「贿性」應無疑慮，又本發明較之習知方法更 具功效之增進’因此亦具有「進步性」，其完讀合我國專概有關發明專 利之申請要件的規定’乃依法提起專利申請，並敬請鈞局早日審查並 給予肯定。 201026555 f圖式簡單說明j 第-圖係本發明自行車令空曲柄製造方法之流程示意圖。 第二圖係本㈣之她_之剖赫相。 第三圖係本發明之初胚之立趙示意圖。 ' 第四®係本發•巾空顧之剖視示意圏。 帛五本發私財轉魏冰之職 參 第七圖係本發明之曲柄成品之剖視示意圖。 第八圖係本伽之曲柄成品之立體示意g。 第九圓係本發明之第二實補之流程示意圖。 第十圖係本發明之第二實關之初胚及中空成型之剖視示意圖。 【主要元件符號說明】 S1初胚成型S2中空成型S3注水冷减/填冰 S4鍛壓細S5後加卫處理su她及中空成型The mold includes an upper mold η and a lower mold 12, and is made of a punch 13 from the middle J 141, which is hollowed out by her 14; the tail child i is the Ministry of the Ministry of Industry = turn 3: _ the fifth coffee 'nature human hollow embryo Aui is, ^1^冰15, so that the towel of her 14 is filled with ice] or 疋41 (4) 141 shape matching directly fill in the _41. 201026555 I - Forging forming S4: Please refer to the sixth figure It is shown that the hollow primary embryo 4 filled with ice 15 is placed in a molding die, and the molding die includes an upper mold 21 and a lower mold four, which are forged and formed, and the hollow portion ι41 is slid by the tail portion, and is made into a semi-finished product of the handle. 23, the head of the crank semi-finished product 23 and the tail of the Nacheng high and low drop, at this time towel _ 141 _ stored ice 15 or melted water; after the addition of Wang treatment S5: Please refer to _ _ _ show, the Qu Cai finished product 23 processing heart The shaft mounting hole 31 and the pedal mounting hole 32, and a through hole 33 is formed at the lower end of the hollow portion 141, which is used by the towel worker. The M41 is connected to the crank product 3G, and the crank finished product 3Q is heat-treated. The ice melts into the water and automatically flows out through the perforations 33. The hollow portion (4) does not form a vacuum by the perforations 33, thereby avoiding the risk of explosion during heat treatment. For the second embodiment of the present invention, please refer to the ninth and tenth drawings, wherein the same as the first embodiment will not be described again, and only the differences will be described. The ninth embodiment is a flow of the second embodiment of the present invention. It is not intended to include the following steps: initial embryo and hollow molding su, water injection cold/ice filling, forging forming S13, and post-protecting treatment S14. Among them, the initial embryo and the hollow molding su: Please refer to the tenth figure, the metal material is placed in the initial embryo mold, and the initial embryo mold includes the upper mold and the lower mold 42 and is formed by the punch 43. The department is made into a hollow primordial 44 by a three-team three-way forging method. Other subsequent steps: water injection cold rolling/ice filling S12, Lai molding S13, and post-processing SU' are the same as in the first embodiment, please refer to the above description. The process flow of the present invention is simplified, the manufacturing cost and the processing time are reduced, and thus the product's speech force is greatly improved. The above description is only for explaining the preferred embodiment of the present invention and is not intended to be in any form for the present invention. Therefore, any modification or change relating to the present invention made under the same duck god, (4) is included in the scope of the hair (4) secret protection. In summary, the bicycle hollow crank manufacturing of the present invention In terms of practicability and cost-effectiveness, the method is indeed in line with the development of the industry, and the method of making money is an innovative method with unprecedented 201026555. Therefore, it has to be considered as a "bribery". More Conventional method is more with the effectiveness of the promotion 'therefore also has a "progressive", which finished reading together our professionals shall apply for requirements related to patents of invention' is the mention law patent applications, and please Jun bureau as soon as possible to review and affirmed. 201026555 f Brief description of the drawing j The first figure is a schematic flow chart of the bicycle cranking manufacturing method of the present invention. The second picture is the result of her (4). The third figure is a schematic diagram of the initial embryo of the present invention. 'The fourth version of the hair and the towel is a cross-sectional view.帛五本发私财转魏冰's job 参 The seventh figure is a schematic cross-sectional view of the crank product of the present invention. The eighth figure is the three-dimensional representation g of the finished product of Benga. The ninth circle is a schematic diagram of the second actual complement of the present invention. The tenth drawing is a schematic cross-sectional view of the first embryo and the hollow molding of the second embodiment of the present invention. [Main component symbol description] S1 initial embryo molding S2 hollow molding S3 water injection cold reduction / ice filling S4 forging fine S5 after adding treatment su her and hollow molding
S12注水冷滚/填冰S13鍛壓成型S14後加工處理 01上模 12下模 15冰 30曲柄成品 33穿孔 02下模 03初胚 11上模 13沖頭 14中空初胚 141中空部 21上模 22下模 23曲柄半成品 31心轴安裝孔32踏板安裝孔 41上模 42下模 43沖頭 44 中空初胚 8S12 water injection cold roll / ice filling S13 forging forming S14 post processing 01 upper mold 12 lower mold 15 ice 30 crank finished product 33 perforated 02 lower mold 03 initial embryo 11 upper mold 13 punch 14 hollow embryo 141 hollow portion 21 upper mold 22 Lower die 23 crank semi-finished product 31 spindle mounting hole 32 pedal mounting hole 41 upper die 42 lower die 43 punch 44 hollow embryo 8