Lens Chuck Assembly for Optical Lens Grinding

Product Specifications

Technical details and manufacturing context for Lens Chuck Assembly

Definition

The Lens Chuck Assembly is a critical component of the Precision Optical Lens Grinding Machine, responsible for securely and precisely holding optical lenses in place during grinding, polishing, and finishing processes. It ensures minimal distortion and maintains exact positioning to achieve the required optical specifications and surface quality. The assembly typically uses mechanical, vacuum, or adhesive methods to grip the lens periphery or back surface. It rotates with the machine spindle while maintaining precise centering and minimal runout, allowing grinding tools to shape the lens to exact curvature and thickness specifications. Constructed from stainless steel, precision aluminum alloy, and ceramic components, the chuck is designed for durability and stability in demanding production environments. Key parameters include chuck diameter (50–200 mm), clamping force (500–3000 N), runout (≤0.005 mm per ISO 230-1), repeatability (±0.002 mm), operating pressure (1.0–1.6 MPa), maximum speed (3000–6000 rpm), operating temperature (5–60 °C), humidity range (30–80% RH), ingress protection (IP54–IP65 per IEC 60529), material grade (SUS440C per JIS G4303), and weight (5–20 kg). These values are reference ranges and must be verified for the specific model and application. The chuck's performance directly affects lens quality, so proper selection, installation, and maintenance are essential. Regular inspection for wear, runout, and seal integrity is recommended. Always consult the legal manufacturer or supplier to confirm model-specific specifications and compliance with applicable standards.

Working Principle

The Lens Chuck Assembly grips the lens using mechanical, vacuum, or adhesive methods, depending on the lens material and fragility. It is mounted on the machine spindle and rotates with it. The chuck maintains precise centering and minimal runout (≤0.005 mm TIR) to ensure the lens is positioned accurately. Clamping force is adjustable (500–3000 N) to accommodate different lens sizes and materials without causing distortion. The assembly operates within specified pressure, temperature, and humidity ranges to maintain performance. The chuck's design minimizes vibration and thermal effects, enabling consistent grinding and polishing to achieve the required optical specifications.

Common Materials

Stainless steel, Precision aluminum alloy, Ceramic components

Technical Parameters

Parameter	Typical range	Notes & selection driver
Chuck Diameter	50–200 mm	Matches lens blank size
Clamping Force	500–3000 N	Adjustable for lens fragility
Runout (TIR)	≤0.005 mm	Critical for optical centeringISO 230-1
Repeatability	±0.002 mm	Ensures consistent processing
Max Speed	3000–6000 rpm	Limited by chuck balance
Operating Temperature	5–60 °C	Outside range affects elastomer seals
Humidity Range	30–80 % RH	Condensation may cause corrosion
Ingress Protection	IP54–IP65	Protects against coolant and dustIEC 60529
Material Grade	SUS440C	Stainless steel for corrosion resistanceJIS G4303
Weight	5–20 kg	Affects spindle load

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Chuck Body Part
Main structural frame that houses clamping mechanisms

Material: Stainless steel
Clamping Jaws Part
Adjustable elements that contact and secure the lens

Material: Hardened tool steel
Centering Mechanism
Ensures lens is perfectly aligned with rotational axis

Material: Precision aluminum alloy
Mounting Flange Part
Interface for attaching to grinding machine spindle

Material: Stainless steel
Clamping Force Adjuster
Sets clamping force across the 500–3000 N range so thin or fragile lenses are not distorted.
Vacuum Chuck Optional
Holds the lens by suction instead of jaws, for the most fragile elements.

Manufacturers of Lens Chuck Assembly

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Frequently Asked Questions

What materials are used in the Lens Chuck Assembly?

The assembly is typically made from stainless steel, precision aluminum alloy, and ceramic components. The material grade for stainless steel is SUS440C per JIS G4303, but confirm the exact materials with the manufacturer for your specific model.

What is the maximum speed and how does it affect performance?

The maximum speed range is 3000–6000 rpm, limited by chuck balance. Operating within this range ensures stable rotation and minimal vibration, which is critical for achieving precise lens geometry. Always verify the speed rating for your specific chuck.

How do I verify the runout specification?

Runout (TIR) is specified as ≤0.005 mm per ISO 230-1. To verify, use a dial indicator while rotating the chuck. Ensure the chuck is properly installed and maintained. For acceptance testing, refer to the manufacturer's procedures and the relevant standard.

What maintenance is required for the Lens Chuck Assembly?

Regularly inspect for wear, runout, and seal integrity. Check clamping force and ensure operating conditions (temperature, humidity, pressure) are within specified ranges. Follow the manufacturer's maintenance schedule and use recommended lubricants. Replace worn components promptly to avoid quality issues.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Max clamping pressure: 0.5 to 2.0 MPa (adjustable based on lens material)
other spec:	Slurry concentration: Up to 30% abrasive by weight, Flow rate: 5-20 L/min for cooling/lubrication
temperature:	+5°C to +60°C

Lens Chuck Assembly

Product Specifications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards