滚花定位轴 (Knurled Positioning Shaft)

产品简介

滚花定位轴是新能源汽车电机、传感器及电池模组中的核心精密结构件，承担着关键的定位、传动与固定功能。昆山图达讯电子科技有限公司采用碳钢1045（Carbon Steel 1045）为基材，依托60余台进口走心机（西铁城、津上、斯大）的卓越加工能力，为该类零件提供微米级精度的制造方案。

针对滚花定位轴多台阶、高同轴度及端面防滑的需求，我们运用走心机双主轴同步车削与车铣复合工艺，实现一次装夹完成外圆、台阶、滚花、倒角及键槽铣削。配合表面镀镍处理，不仅提升了零件的耐磨与防腐性能，更确保了在严苛工况下的长期可靠性。我们支持500件起订及快速打样，助力新能源客户缩短研发周期。

关键参数

产品特点与走心机工艺优势

• 双主轴同步加工，卓越同轴度

   

  采用走心机双主轴对接车削技术，零件在一次装夹中完成正反两面加工。彻底消除二次装夹带来的累积误差，确保多台阶过渡段与定位基准的极高同轴度，满足电机转子高速旋转的动平衡要求。
• 精密多台阶过渡与端面滚花

   

  利用走心机纵切工艺的高刚性，精准车削复杂的阶梯轴外圆。端面滚花采用专用滚花刀轮，在主轴同步旋转下压入，确保滚花纹路清晰、均匀、无撕裂，提供优异的防滑与装配咬合力。
• 车铣复合一次成型，高效加工键槽

   

  配备动力刀塔与CNC铣削功能，在车削完成后无需拆卸，直接进行平面键槽、横孔或异型结构的铣削加工。工序高度集中，大幅缩短生产周期，提升形位公差的一致性。
• 微米级精度控制与优质表面质量

   

  加工尺寸公差稳定控制在±0.005mm（IT6），表面粗糙度达到Ra0.8–Ra1.6。结合后续的环保镀镍工艺，在保障尺寸精度的同时，赋予碳钢基材优异的抗腐蚀与耐磨损性能。

典型应用

• 新能源汽车电机转子定位：作为电机内部的关键定位轴，确保转子铁芯与转轴的高精度同轴装配，保障电机在高速运转下的平稳性与效率。
• 传感器安装轴：为新能源车企的各类位置、速度传感器提供精密安装基座，其多台阶结构确保传感器探头的精准定位与信号稳定。
• 电池模组固定销：在动力电池模组中充当高强度固定销，端面滚花设计增加了与塑胶或金属壳体的摩擦力，防止模组在震动工况下发生松动。

公司实力与询盘引导

昆山图达讯电子科技有限公司始创于1998年，深耕精密走心机加工近三十年。拥有60余台西铁城、津上、斯大进口走心机，日产能高达50万件。我们已通过 IATF16949 与 ISO9001 双体系认证，全面服务于汽车（含新能源）、医疗器械、航空航天及5G通信等高端行业。

寻求高精度滚花定位轴加工方案？请联系我们获取报价与技术支持：

• 官网：www.tudasyn.com
• 邮箱：yty@tudasyn.com
• 电话：18913105795

Knurled Positioning Shaft

Product Overview

The knurled positioning shaft is a critical precision structural component in new energy vehicles (NEVs), sensors, and battery modules, serving essential functions in positioning, transmission, and fixation. Kunshan Tudasyn Electronic Technology Co., Ltd. utilizes Carbon Steel 1045 as the base material, leveraging our extensive fleet of over 60 imported Swiss-type CNC machines (Citizen, Tsugami, Star) to deliver micron-level precision for these components.

Addressing the demands for multi-step profiles, high coaxiality, and anti-slip end surfaces, we employ dual-spindle synchronous turning and mill-turn composite processes. This allows us to complete OD turning, stepping, knurling, chamfering, and keyway milling in a single clamping. Coupled with nickel plating, the parts achieve enhanced wear and corrosion resistance, ensuring long-term reliability under harsh operating conditions. We support a minimum order of 500 pieces and rapid prototyping to help NEV clients accelerate their R&D cycles.

Key Specifications

Features & Swiss-Type CNC Advantages

• Dual-Spindle Synchronization for Superior Coaxiality

   

  Utilizing dual-spindle back-working technology, the part is completed in a single clamping. This completely eliminates cumulative errors from secondary clamping, ensuring exceptional coaxiality between multi-step transitions and positioning datums, meeting the dynamic balance requirements for high-speed motor rotors.
• Precision Multi-Step Turning & End Knurling

   

  Leveraging the high rigidity of Swiss-type longitudinal cutting, we precisely turn complex stepped shaft ODs. End knurling is performed with dedicated knurling tools under synchronous spindle rotation, ensuring clear, uniform, and tear-free knurled patterns for excellent anti-slip and assembly bite force.
• Integrated CNC Milling for Keyways

   

  Equipped with live tooling and CNC milling capabilities, flat keyways, cross holes, or custom profiles are milled directly after turning without unloading the part. This highly concentrated process significantly reduces production cycles and improves the consistency of geometric tolerances.
• Micron-Level Tolerance & Excellent Surface Finish

   

  Dimensional tolerances are strictly controlled within ±0.005mm (IT6), with surface roughness achieving Ra0.8–Ra1.6. Combined with subsequent eco-friendly nickel plating, it ensures dimensional accuracy while providing the carbon steel substrate with outstanding anti-corrosion and wear-resistant properties.

Typical Applications

• NEV Motor Rotor Positioning: Acts as a critical positioning shaft inside the motor, ensuring high-precision coaxial assembly of the rotor core and shaft, guaranteeing stability and efficiency during high-speed operation.
• Sensor Mounting Shafts: Provides a precision mounting base for various position and speed sensors in NEVs. Its multi-step structure ensures accurate positioning of sensor probes and stable signal transmission.
• Battery Module Fixing Pins: Serves as high-strength fixing pins in power battery modules. The end knurling design increases friction with plastic or metal housings, preventing the module from loosening under vibration conditions.

Company Capability & Inquiry CTA

Kunshan Tudasyn Electronic Technology Co., Ltd. founded in 1998, has been deeply engaged in precision Swiss-type CNC machining for nearly 30 years. We operate over 60 imported Swiss-type CNC machines from Citizen, Tsugami, and Star, with a daily production capacity of up to 500,000 pieces. We are certified with both IATF16949 and ISO9001, comprehensively serving high-end industries including automotive (including NEV), medical devices, aerospace, and 5G communications.

Looking for high-precision knurled positioning shaft machining solutions? Contact us for a quote and technical support:

• Website: www.tudasyn.com
• Email: yty@tudasyn.com
• Phone: 18913105795

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