Product Introduction:

This optical encoder disc is a high precision stainless steel disc designed for accurate position detection and signal output in encoder systems. The precision disc is manufactured using chemical etching technology, ensuring uniform slot structure, burr-free edges, and stable optical performance. As a reliable encoder disc, it is suitable for applications requiring high accuracy and long service life.

Applications:

Rotary encoders, servo motors, CNC systems, automation equipment, optical positioning devices

Why Chemical Etching is the Ideal Choice for Optical Encoder Discs

Introduction
In the realm of motion control and automation, the encoder disc is the heart of the system. Its accuracy dictates the performance of the entire machine. At NKEYTO, our engineers specialize in manufacturing Precision Stainless Steel Encoder Discs using a process that prioritizes optical clarity and dimensional stability: Photochemical Etching.

Unlike traditional mechanical punching or thermal laser cutting, our process produces intricate slot patterns without introducing burrs or stress. This results in a Precision Metal Component that ensures stable optical performance and long service life.

The Challenge with Traditional Manufacturing Methods

When fabricating high-resolution components like Optical Encoder Discs, standard manufacturing methods often introduce physical limitations that impact performance:

• Laser Cutting: While fast, laser cutting is a thermal process. The heat-affected zone (HAZ) can cause micro-warping in thin metal sheets and alter the material's grain structure. Recast material and dross can also accumulate on the edges, scattering light and creating signal noise.
• Punching/Stamping: This mechanical process induces high stress into the metal. This stress can cause the disc to deform over time (relaxation), leading to positional drift. Additionally, the physical force of the die often leaves tiny burrs on the slot edges.

Why Choose Chemical Etching for Your Encoder Discs?

Our Chemical Etching process offers a distinct advantage for High-Resolution Encoder Discs. It is a "cold" process that uses a controlled chemical reaction to dissolve metal, leaving the surrounding material completely unaffected.

Key Advantages for Your Application:

1. Zero Burrs & Smooth Edges:
   Mechanical punching often leaves tiny burrs on the edges of the slots. In optical systems, these burrs scatter light, leading to inaccurate signal output. Our etching process produces Burr-Free Edges, ensuring clean light transmission and precise signal generation.
2. Stress-Free & Dimensionally Stable:
   Because there is no physical contact or heat involved, the metal retains its original integrity. This means our Stainless Steel Discs remain perfectly flat, even at thicknesses below 0.1mm. This stability is critical for applications requiring long-term reliability, such as servo motors and CNC systems.
3. Unmatched Geometric Flexibility:
   Need a complex sine/cosine wave pattern or a custom binary code? Chemical etching allows us to produce intricate slot geometries that would be impossible to punch and difficult to laser-cut cleanly. There are no tooling costs or wear, making it perfect for both prototyping and mass production.

Technical Specifications

We manufacture our Precision Optical Discs to meet the stringent demands of modern industrial automation.

• Material: Premium Stainless Steel (SUS304, SUS316)
• Thickness Range: 0.05mm – 1.0mm
• Tolerance: ±0.02mm (depending on material thickness)
• Feature Size: Capable of etching slots as fine as 0.1mm for high-resolution applications.
• Surface Quality: Oxide-free and ready for optical coating.

Applications

These high-precision components are the backbone of accurate position detection in various fields:

• Industrial Robotics: For precise joint position feedback.
• Medical Devices: Where reliability and clean edges are non-negotiable.
• Precision Measurement: Optical positioning and grating systems.

🚀 Ready to Optimize Your Design?

If you are currently facing challenges with burrs or warping in your encoder discs, our chemical etching process might be the solution. Contact our engineering team today for a free design review and see how we can improve the performance of your Precision Metal Components.

Get in touch with us:

• Contact Person: Luna
• Company: NKEYTO (Shenzhen Xintu Precision Hardware Co., Ltd.)
• WhatsApp: 12132219094

❓ Engineer's FAQ

Q1: Why is "Burr-Free" so important for an Optical Encoder Disc?
A: In optical encoding, light passes through the slots of the disc. Any physical imperfection, like a burr left by punching, acts as a diffraction grating, scattering the light. This scattering creates "noise" in the signal, reducing the accuracy of position detection. Our Chemical Etching process ensures perfectly smooth edges, maximizing signal clarity.

Q2: Can chemical etching achieve the same resolution as laser cutting?
A: Absolutely. While lasers are precise, they struggle with thermal distortion on thin films. Our photo-tooling process allows us to achieve feature sizes down to 0.1mm. For high-resolution applications requiring fine pitch and uniform slot spacing, our etched Precision Discs offer superior consistency without the risk of warping.

Q3: Is chemical etching suitable for custom designs?
A: It is the ideal solution for customization. Since we use digital phototools instead of hard steel dies, we can easily accommodate custom diameters, slot counts, and mounting hole patterns without expensive setup changes. Whether you need a standard Grating Disc or a fully custom component, we can manufacture it based on your DXF files.