Ratchet
描述
Forged Aluminum Bicycle Ratchet: Externally Splined Barrel Drive Part
The forged aluminum bicycle ratchet is a barrel-shaped drive part for bicycle hubs or drivetrains. It is a cylindrical body with multiple axial spline teeth around its outside and a larger-diameter flange ring at one end. The external splines mate with cassette sprockets or cogs to transmit torque, while the flange ring acts as an axial locating face or pawl engagement surface.
Machining external splines requires milling or hobbing; forging the splines to near-net shape shortens machining and keeps grain flow following the tooth form. Al Forge Tech (AFT) evaluates cold or hot forging by spline accuracy and wall thickness, finish-turns and CNC-finishes the diameters and splines after heat treatment, and offers hard anodizing for wear-resistant tooth faces.
主要功能
- External-spline barrel and flange ring formed in one piece
- Near-net splines shorten milling or hobbing time
- Diameters and splines turned and CNC-finished
- Hard anodizing for wear-resistant tooth faces
Forged Aluminum Bicycle Ratchet Specifications and Manufacturing Capability
| 商品 | 詳細 |
|---|---|
| 產品類別 | Aluminum Forging Bicycle Parts |
| 申請 | Bicycle hubs (e.g. freehub bodies), ratchets and drivetrains |
| 主要過程 | Hot or cold forging, selected by spline accuracy and wall thickness (hot 600T–8,000T / cold 260T–2,500T) |
| 材質 | Selected to customer specification; 2xxx, 5xxx, 6xxx and 7xxx series aluminum alloys available (e.g. 2014, 6061, 6082, 7075) |
| 熱處理 | 根據合金與強度要求而提供的內部 T4 處理方案（8 套）及 T6 人工老化處理方案（7 套） |
| 二次加工 | CNC 加工（52 台加工中心、30 台銑床）、銑削、振動磨削 |
| 表面處理 | 按要求進行陽極氧化（包括硬陽極氧化）、噴射粉碎、電子塗層或塗漆。 |
| 檢查 | Zeiss CMM (4 units), hardness testers, spectrometer, fluorescent penetrant inspection line |
| 尺寸與公差 | 按客戶提供2D/3D圖紙 |
| 品質管理系統 | IATF 16949:2016、ISO 14001:2015 |
Forged Aluminum Bicycle Ratchet Manufacturing Process
- 繪圖評估與 DFM我們確認合金、載荷方向和關鍵尺寸，然後執行 QForm 模擬，以預測金屬流動和缺陷風險。.
- 設計與製造銑刀組數（例如，阻斷刀和完成刀）視零件的複雜程度而定，銑刀輪廓則使用便攜式3D掃描儀進行檢查。.
- Cold forging: cold forming on 260T–2,500T presses, suited to thin-walled, tubular and dimensionally repeatable parts.
- 熱處理T4 溶液處理和 T6 人工老化處理均在廠內進行，參數由合金和強度要求設定。.
- CNC加工 以及完成孔、螺紋和接合面均經過機械加工，然後根據需要進行拋光、振動拋光、噴丸或陽極氧化處理。.
- 檢查與運輸尺寸、硬度及化學成分均通過 CMM、硬度測試儀及分光光度儀進行驗證，且所有批次的產品均遵照 IATF 16949 的標準進行追蹤。.
常見問題
How do I choose between an aluminum and a steel ratchet?
An aluminum ratchet is lighter and suits weight-focused hub and drivetrain designs, but its tooth surface is softer than steel, so hard anodizing and controlled contact pressure are usually needed. A steel ratchet is more wear-resistant and suits high-load or long-life designs. The material should be evaluated against the mating parts and loads; AFT focuses on aluminum forging solutions.
How is the external spline fit with the cassette ensured?
Spline profile, tooth thickness and measurement over pins determine how tightly the cassette fits. AFT forges near-net splines, finishes them to tolerance after heat treatment and measures tooth form and OD with CMM, a profile meter and gauges. If hard anodizing follows, machining dimensions allow for film thickness so the treated part still meets the fit tolerance.
Can the Forged Aluminum Bicycle Ratchet be anodized or given other surface finishes?
Yes. Al Forge Tech offers anodizing (including hard anodizing), shot blasting, vibratory finishing, e-coating and painting, plus pickling and ultrasonic washing lines to clean parts after machining. Please note the finish type and film thickness on the drawing so machining allowances and cosmetic standards for the Forged Aluminum Bicycle Ratchet can be evaluated together.
How do you keep the Forged Aluminum Bicycle Ratchet consistent from lot to lot?
Al Forge Tech runs incoming (IQC), in-process (IPQC) and final (FQC) inspection under IATF 16949:2016, supported by 4 Zeiss CMMs, hardness testers, a spectrometer and a fluorescent penetrant inspection line. First, middle and last pieces of every lot are checked against the die; when wear causes dimensional drift, the die is reworked to keep the Forged Aluminum Bicycle Ratchet stable across lots.
What information do you need to quote the Forged Aluminum Bicycle Ratchet?
Please send a 3D model and 2D drawing, alloy grade and temper, critical tolerances, surface finish requirements, estimated annual volume and target delivery date. Complete data lets our engineers judge forging feasibility, the number of die sets and the machining scope for the Forged Aluminum Bicycle Ratchet at the quotation stage. If the design is still conceptual, a sketch is enough to start a DFM discussion.
Request a Quote for the Forged Aluminum Bicycle Ratchet
Developing a new Forged Aluminum Bicycle Ratchet or converting an existing part to aluminum forging? Send us your 3D/2D drawings, alloy and temper, annual volume and finishing requirements. Our engineering team will reply with a feasibility review, die plan and quotation.
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若要比較相似的零件，請瀏覽 Aluminum Forging Bicycle Parts 以及我們的 汽車鋁合金鍛造應用, 或參觀 公司簡介 關於我們的設備與認證。.
