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High-Precision CNC Base & Housing Components for Advanced Sensing Systems
At Xierge Precision Machinery Co., Ltd., we leverage over 30 years of operational expertise since 1990 to manufacture high-precision CNC Base & Housing Components for modern vehicle safety and control systems. Electronic yokes—such as torque sensor yokes, magnetic encoder mounts, and electric motor stator yokes—are critical components that require extreme geometric precision, strict position tolerances, and flawless magnetic properties to ensure accurate signal transmission and sensor calibration. Even a micron-level deviation in pole tooth alignment can lead to steering feedback errors or motor efficiency drops.
To achieve flawless results, our production facility is equipped with Japanese imported Star CNC Swiss-type lathes and advanced 4-axis CNC machining centers. This specialized equipment allows us to machine complex yoke geometries—including multi-pole teeth, deep internal grooves, and precise cross-drilled mounting holes—in a single setup. This single-clamping approach eliminates secondary positioning errors and ensures extreme coaxiality and true positioning between mating surfaces.
Following our core principle of "Integrity Oriented, Quality Foremost," we strictly adopt premium magnetic-grade raw materials, such as low-carbon steel (10# / SPCC) and specific electrical stainless steels. To guarantee reliable product performance, we apply strict quality inspection protocols utilizing a complete set of testing instruments imported directly from Japan and Germany, verifying pole tooth symmetry, flatness, and magnetic consistency. We keep innovating to maintain sound business development and warmly welcome domestic and overseas clients to visit our factory and explore custom OEM/ODM cooperation opportunities.
CNC Base & Housing Components Technical Specifications
| Yoke Types | Torque Sensor Yokes, Magnetic Encoder Mounts, Motor Stator Yokes, Resolvers Housings |
|---|---|
| Primary Equipment | Star CNC Swiss-type Lathes, 4-axis CNC Machining Centers, CNC Broaching Machines |
| Dimensional Tolerance | Mating Diameters: ±0.005mm; Pole Tooth Spacing: ±0.01mm |
| Geometric Tolerances | True Position: 0.02mm; Flatness: 0.01mm; Coaxiality: 0.005mm |
| Common Materials | SPCC, 10# Carbon Steel, 12L14, SUS430F (Magnetic Stainless), Pure Iron |
| Heat Treatment | Stress Relief Annealing, Normalizing (To optimize magnetic permeability) |
| Surface Roughness (Ra) | Mating Surfaces: Ra 0.8; Pole Teeth / Sensor Paths: Ra 0.4 |
| Machining Features | Multi-Pole Teeth Milling, Deep Grooves, Cross-Drilled Holes, Precision Tapers |
| Inspection Equipment | German/Japanese CMM, Optical Comparators, Gaussmeters, Hardness Testers |
Core Advantages of Xierge CNC Base & Housing Components
- Multi-Axis Pole Tooth Machining: Our 4-axis CNC machining centers allow for the precise milling of complex multi-pole teeth and deep internal grooves in a single setup, ensuring absolute symmetry and pitch accuracy for magnetic sensing.
- Magnetic-Grade Material Expertise: We have mature processing parameters for SPCC, pure iron, and SUS430F, preventing work-hardening and preserving the material's high magnetic permeability required for accurate sensor signals.
- Extreme True Position Control: By eliminating secondary clamping, we maintain tight true position tolerances (0.02mm) between mounting holes and sensor pole teeth, guaranteeing perfect alignment during vehicle assembly.
- Advanced Stress Relief Processing: We implement strict stress-relief annealing post-machining to prevent micro-warping over the vehicle's lifespan, maintaining dimensional stability in harsh engine bay environments.
- Dedicated Demagnetization Protocol: All magnetic yokes undergo a thorough demagnetization process before packaging to eliminate residual magnetic fields that could interfere with delicate automotive electronics.
- World-Class Metrology Assurance: Utilizing imported German and Japanese CMMs and optical comparators, we precisely map pole tooth profiles, flatness, and geometric tolerances on every batch.
- 3-Decade Automotive OEM Experience: Since 1990, we have continuously innovated, providing full PPAP documentation and DFM optimization for custom electronic yoke projects, from prototyping to mass production.
Payment Methods & Global Logistics Solutions
Secure International Payment Terms:
To facilitate smooth B2B international trade, we offer flexible and secure payment options. For mass production orders of CNC Base & Housing Components, we accept standard T/T (Telegraphic Transfer) with a 30% advance deposit and 70% balance before shipment. For large-scale international supply contracts, we are fully capable of processing Irrevocable Letters of Credit (L/C) at sight. For initial prototyping, sample orders, or custom tooling fees, PayPal and Western Union are also available to expedite the process.
Global Logistics & Protective Packaging:
We provide comprehensive end-to-end shipping solutions under FOB, CIF, and DAP Incoterms. For urgent prototypes or small batches, we utilize expedited international couriers such as DHL, FedEx, and UPS. For bulk mass production, we offer highly competitive sea freight (LCL/FCL) and air cargo rates through our trusted global forwarder network. Recognizing that electronic yokes have delicate pole teeth and precise mounting surfaces highly susceptible to impact and oxidation, we utilize specialized packaging: each yoke is separated by custom EPE foam partitions to prevent tooth-to-tooth contact, wrapped in VCI (Volatile Corrosion Inhibitor) anti-rust paper, and packed in sturdy export-grade cartons or wooden cases to ensure zero deformation during international transit.
FAQ
Machining can cause work hardening and residual stress, which degrade magnetic permeability. We use sharp, polished cutting tools with optimized feed rates to minimize heat generation. Furthermore, all magnetic yokes undergo a specialized stress-relief annealing process post-machining, which restores the material's optimal microstructure and ensures consistent magnetic flux transfer for the sensor.
Standard calipers cannot measure pole teeth. We utilize imported German and Japanese Coordinate Measuring Machines (CMM) equipped with micro-probes. The CMM maps the exact coordinates of each pole tooth, calculating the true position, pitch deviation, and symmetry relative to the mounting datum, ensuring they meet strict automotive sensor tolerances.
Yes. The cutting and milling processes can induce residual magnetism in ferrous materials. If left untreated, this residual field can attract metal debris or interfere with the magnetic encoder. Every batch of yokes passes through an industrial demagnetizer, and we verify the residual magnetic field using a gaussmeter to ensure it is within acceptable limits.
Absolutely. For high-volume automotive yokes that do not require maximum magnetic permeability, 12L14 is an excellent choice due to its lead content, which drastically improves machinability and extends tool life. We have extensive experience running 12L14 on our Swiss lathes, allowing us to offer highly competitive pricing for mass production.
Deep internal grooves and pole teeth are highly sensitive to burrs. We employ precision back-chamfering tools directly on the CNC machine during the machining cycle. For inaccessible areas, we use specialized thermal energy deburring (TEM) or abrasive flow machining. This is followed by rigorous ultrasonic cleaning to ensure a 100% burr-free surface.
Yes. With over 30 years of experience supplying the automotive industry, we are fully compliant with PPAP (Production Part Approval Process) requirements. We provide complete documentation, including dimensional layouts, material certificates, capability studies (Cpk/Ppk), and measurement system analysis (MSA) to ensure seamless integration into your automotive supply chain.
