Multi-Axis Positioning Stage for PCB Optical Inspection

Product Specifications

Technical details and manufacturing context for Multi-Axis Positioning Stage

Definition

The Multi-Axis Positioning Stage is a critical component within Automated PCB Optical Inspection Systems. It enables precise, programmable positioning of printed circuit boards along multiple axes—typically X, Y, and sometimes Z or rotational axes—to facilitate comprehensive optical scanning and defect detection across the entire PCB surface. This stage is designed for integration into inspection equipment used in the computer, electronic, and optical product manufacturing industry. Its construction typically incorporates aluminum alloy, stainless steel, and ceramic bearings, offering a balance of rigidity, corrosion resistance, and low friction. The stage provides travel ranges of 200–400 mm in X and Y, and 50–100 mm in Z, accommodating various PCB sizes. Positioning accuracy is specified at ±0.01–±0.02 mm, with repeatability of ±0.005–±0.01 mm, both referenced to ISO 230-2. It supports a maximum load of 10–50 kg, including PCB and fixture weight, and operates at speeds of 100–500 mm/s. The drive type is servo-based for closed-loop control, with a resolution of 0.001–0.005 mm. The stage operates within a temperature range of 10–40 °C and offers ingress protection rated IP54–IP65 per IEC 60529. Its weight ranges from 150–300 kg, and it requires a single-phase 220 V AC supply (±10%). These parameters are directory reference ranges; actual values must be confirmed with the legal manufacturer or supplier for specific models and applications. The stage's performance directly impacts inspection throughput and accuracy, making it a key selection factor for system integrators and end-users.

Working Principle

The stage uses precision linear motors, servo motors, or stepper motors controlled by motion controllers to achieve accurate positioning. The stage moves according to programmed coordinates, allowing the optical inspection system to scan different areas of the PCB systematically. Feedback systems, such as encoders and linear scales, ensure positioning accuracy and repeatability. The servo drive type provides closed-loop control, continuously adjusting motor commands based on feedback to maintain precise position. The stage's mechanical design, including ceramic bearings and rigid materials, minimizes deflection and vibration, contributing to stable operation. The motion controller interprets inspection software commands and coordinates multi-axis movement, enabling complex scanning patterns. The stage's resolution and repeatability are critical for consistent defect detection, as even minor deviations can affect image quality. The system's speed and acceleration are optimized to balance throughput and accuracy, with the ability to adjust parameters for different PCB types and inspection requirements.

Common Materials

Aluminum alloy, Stainless steel, Ceramic bearings

Technical Parameters

Parameter	Typical range	Notes & selection driver
Travel Range X	200–400 mm	Determines maximum PCB size
Travel Range Y	200–400 mm	Determines maximum PCB size
Travel Range Z	50–100 mm	Focus and clearance
Positioning Accuracy	±0.01–±0.02 mm	Critical for inspection repeatabilityISO 230-2
Repeatability	±0.005–±0.01 mm	Ensures consistent positioningISO 230-2
Maximum Load	10–50 kg	Includes PCB and fixture weight
Speed	100–500 mm/s	Affects throughput
Drive Type	Servo	Servo for closed-loop control
Resolution	0.001–0.005 mm	Smallest incremental movement
Operating Temperature	10–40 °C	Outside range affects accuracy
Ingress Protection	IP54–IP65	Protects against dust and waterIEC 60529
Weight	150–300 kg	Affects installation and floor loading
Supply Voltage	220 ±10% V AC	Single phase

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

Linear Guide Rails
Provide smooth, low-friction linear motion along each axis

Material: Stainless steel
Ball Screws/Linear Motors
Convert rotational motion to linear motion for precise positioning

Material: Steel/alloy
Servo/Stepper Motors
Provide controlled rotational motion to drive the positioning mechanism

Material: Various metals and magnets
Position Encoders
Provide feedback on actual position for closed-loop control

Material: Glass/ceramic scales with optical sensors
Base Plate Part
Structural foundation that supports all moving components

Material: Granite or aluminum alloy
Motion Controller
Turns the scan path into coordinated axis commands and closes the loop on the encoders.

Manufacturers of Multi-Axis Positioning Stage

Manufacturer profiles associated with Multi-Axis Positioning Stage.

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Frequently Asked Questions

What is the typical travel range of this positioning stage?

The travel range is 200–400 mm in X and Y axes, and 50–100 mm in Z axis, as listed in the directory. These are reference ranges; the actual travel for a specific model must be confirmed with the manufacturer.

What standards are referenced for positioning accuracy and repeatability?

The positioning accuracy and repeatability values are referenced to ISO 230-2. This standard provides a method for evaluating the accuracy of machine tools and positioning systems. It is a verification reference, not a certification of compliance.

What is the maximum load capacity of the stage?

The maximum load is 10–50 kg, including the PCB and fixture weight. This range is a directory reference; the actual load capacity depends on the specific model and configuration.

What type of drive system does the stage use?

The drive type is servo, which provides closed-loop control for precise positioning. This is a reference specification; the exact motor and controller configuration should be verified with the supplier.

Data Basis

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

Preliminary Technical Classification

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pressure:	Atmospheric (non-pressure rated)
other spec:	Max velocity: 500 mm/s, Max acceleration: 2 m/s², Positioning accuracy: ±5 μm, Repeatability: ±1 μm
temperature:	10°C to 40°C (operating), -10°C to 60°C (storage)

Multi-Axis Positioning Stage

Product Specifications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards