Description

Product Overview

Engineered for precision optomechanical systems, this Custom CNC Machined Split Ring Optical Lens Tube Clamp is the industry-standard solution for securely mounting cylindrical optical components without introducing distortion or stress. Featuring a robust mounting base and a precision-machined split-ring clamping mechanism, this bracket ensures vibration-resistant fixation of lens tubes, camera lenses, and laser modules.

Crafted from high-grade Aluminum Alloy (6061/7075) and finished with a durable Black Anodized coating, this part combines lightweight construction with exceptional structural rigidity. Our in-house CNC machining services produce parts with tight tolerances, ensuring a perfect fit for your critical imaging and photonics applications.

Explore more custom‑machined optomechanical components within our Optical Parts collection.

CNC Machining Parameters & Specifications

Application Scenarios

Because of its functional design (integrating a base mount with a split clamp), this part is widely utilized across precision industries:

• Optical & Photonics: Securing lens tubes, filter wheels, and beam expanders in benchtop optical setups.

• Cinema & Camera Rigging: Used as a Lens Mount Adapter Support for professional cinema cameras (e.g., RED, ARRI) to hold heavy PL/LPL lenses firmly.

• Laser Systems: Mounting laser diode modules and cylindrical housings in industrial laser marking or cutting equipment.

• Industrial Automation: Fixing cylindrical sensors, linear actuators, and pneumatic tube components in robotic fixtures.

• Medical Devices: Supporting tubular components in diagnostic imaging and surgical equipment where precision and hygiene are paramount.

Material Analysis: Why Aluminum 6061/7075?

We primarily recommend Aluminum 6061-T6 for this bracket, balancing cost and performance. For high-stress load-bearing applications, 7075-T6 is optimal.

• Aluminum 6061-T6: Excellent machinability, superior corrosion resistance, and high weldability. It is perfect for anodizing, providing a sleek matte black finish that resists scratches.

• Aluminum 7075-T6: High-strength aerospace-grade alloy. It offers nearly double the strength of 6061, making it ideal for heavy-duty rigs where the bracket must support large, heavy optics without flexing.

• Why Anodizing? The black anodized layer adds a hard, wear-resistant surface, prevents galvanic corrosion between the aluminum and the optical tube, and reduces light reflection (important for optical environments).

Tolerance Capabilities

Achieving a perfect “grip” on the tube requires exceptional precision. Our machining capabilities include:

• Critical Bore Diameter: Held to ±0.005 mm to ensure a consistent, friction-fit clamp force without binding the optical cylinder.

• Concentricity: Maintained within 0.01 mm between the clamping bore and the mounting base to prevent misalignment in optical axes.

• Flatness: Mounting base surfaces are machined to a flatness of 0.002 mm to ensure perfect contact with the mounting plate or camera body.

• Surface Roughness (Ra): Standard 1.6 μm, with Ra 0.4 μm available for the internal clamping bore to prevent scratching the lens tube.

Manufacturing Challenges & Our Solutions

CNC machining a thin-walled split ring presents specific engineering hurdles:

1. Challenge 1: Distortion during machining. The ring is thin, and clamping forces during CNC milling can warp the part.

   • Our Solution: We use soft jaws and custom fixtures to hold the part during cutting, followed by a stress-relief heat treatment process to ensure the ring remains perfectly round after the split is cut.

2. Challenge 2: Burr control in the split gap. The narrow slit between the clamp ears is prone to burrs.

   • Our Solution: The part is completed using deburring tools, followed by tumbling and secondary ultrasonic cleaning to ensure the gap is smooth and won’t scratch the tube surface.

3. Challenge 3: Anodizing uniformity in tight areas. The hard coat can accumulate unevenly in the split.

   • Our Solution: We utilize Type II (Sulfuric) Anodizing with specialized racking designed for split rings to ensure a consistent film thickness and dimensional stability inside the bore.

Frequently Asked Questions (FAQ)

Q: Is the split ring clamp already cut, or can I adjust the gap?
A: The gap is pre-machined to a specific width. However, it is a functional gap; when you tighten the side screws, the gap closes slightly to apply clamping pressure. We can custom-machined the gap width based on your exact bolt specifications.

Q: Can you match my exact bore diameter and screw thread size?
A: Yes, absolutely. As this is a custom CNC machining part, we do not have standard off-the-shelf sizes. We manufacture strictly to your provided 2D drawings or 3D CAD files (STEP/IGES formats).

Q: What is the maximum torque I can apply to the tightening screws?
A: This depends on the material chosen (6061 vs. 7075) and the wall thickness. For standard 6061-T6 with a 0.5mm wall, we recommend a torque range of 0.5 – 0.8 Nm. We can provide FEA (Finite Element Analysis) suggestions if needed.

Q: Is the black anodized finish conductive?
A: No, Type II anodizing acts as an electrical insulator. If you require anodizing for grounding or electrical contact, we offer Masked Anodizing (leaving specific areas un-anodized) or Chromate Conversion Coating (Alodine).

Q: Do you provide free samples for testing?
A: We offer a competitive prototype service. For complex parts like this, we charge a small machining fee for the sample but deduct the sample cost from your bulk production order.