Professional Digital Optical Profile Projector CPJ-3000 Series | High-Precision 2D Non-Contact Measurement | 0.5µm Resolution & 312mm Projection Screen

Description

I. In-Depth Product Analysis

In modern industrial quality control, accurately verifying the 2D contours, angles, and radii of complex components—such as gears, screw threads, and precision cutting tools—is often challenging with standard contact-style Calipers and micrometers. The Digital Optical Profile Projector CPJ-3000 Series overcomes these limitations by utilizing an optical non-contact measurement method. By projecting a magnified, high-contrast shadow of the workpiece onto a large 312mm diameter glass screen, operators can instantly compare the actual part profile against a standard master template overlay.

The machine boasts a compact, streamlined structure with an aesthetically pleasing and durable design. It offers both upright and inverted projection modes , allowing operators to choose the optimal viewing angle for different measurement tasks. Combined with an easy-to-use digital readout (DRO) system that features 0.5µm resolution, the CPJ-3000 is equally suited for rapid production-line pass/fail inspection and complex, detailed reverse-engineering tasks in metallurgy and electronics manufacturing.

II. Technical Specifications & Model Variations

The CPJ-3000 series is available in two primary configurations (3010 and 3015), offering different X/Y axis travels to suit various part sizes. Both models share the same 0.5µm high resolution, 312mm screen size, and robust 400W power system.

Note: Both models feature dual imaging modes (upright and inverted), transmitted and surface illumination, and a precise digital readout system for versatile 2D dimensional analysis.

III. FAQ (Frequently Asked Questions)

Q1: What is the main advantage of an optical profile projector over a standard measuring microscope?
A: A profile projector projects a large, magnified shadow of the part onto a 312mm screen. This allows for quick comparative measurements —you can overlay a standard Mylar film template or a CAD-drawn overlay directly onto the screen to instantly check complex contours, chamfers, radii, and thread forms. Measuring microscopes are better for point-to-point XY measurements, but the projector excels at checking shape and form .

Q2: How do I measure complex angles and radii using this machine?
A: The screen features a 360° rotating graticule with 1′ (1 arc-minute) resolution. You can align the crosshairs with the edges of a cutting tool or gear tooth and read the exact angle directly from the screen's scale. For radii, operators use the internal concentric circles on the screen's overlay to match the edge contour of the workpiece perfectly.

Q3: What is the role of the dual illumination system (transmitted and surface)?
A: Transmitted illumination shines light from behind the part, casting a sharp silhouette (shadow) for measuring contours, external threads, and punches. Surface illumination reflects light off the top of the part, allowing operators to inspect surface textures, depth features, blind holes, and stepped surfaces where a shadow cannot form.

Q4: Why are the magnification lenses interchangeable?
A: Different parts require different magnifications. For large, coarse tools, 10X magnification allows you to see the entire profile at once. For tiny, intricate watchmaking parts or micro-electronics, 50X or 100X magnification provides the extreme detail required to measure micro-geometry with the system's 0.5µm resolution.

Q5: How often should the machine be calibrated?
A: To maintain the strict ±2.5µm to ±3.0µm accuracy, it should be verified daily against a certified glass scale ruler or master gauge block . For formal ISO 9001 compliance, a full comprehensive calibration using traceable standards should be performed by an accredited metrology lab every 12 months .

IV. Applications & Industry Uses

• Machinery & Tooling Industry: Measuring the flank angles, thread pitch, and profile accuracy of complex cutting tools (drills, end mills, taps) and machining fixtures.

• Gear Manufacturing: Inspecting gear tooth profiles, backlash, and concentricity.

• Electronics & PCB Inspection: Checking the contours of micro-components, contact pins, and PCB surface traces.

• Watchmaking & Precision Timing: Measuring miniature gear trains, pivots, and watch bridge details.

• Stamping & Die Casting: Rapid comparative checking of stamped sheet metal parts and small die-cast housings.

• Automotive & Aerospace: Quality control of small precision components, sealing rings, and fasteners.

• Research & Education: A fundamental teaching tool in mechanical engineering and metrology labs for illustrating 2D geometric principles.

V. Accuracy & Working Principle (Accuracy & Mechanics)

The CPJ-3000 series achieves its 0.5µm resolution and precise indication error using a high-quality optical telecentric lens system. When the workpiece is placed on the glass stage, a collimated light source projects a perfectly magnified shadow of the part onto the 312mm frosted glass screen. The X/Y stage, driven by precision lead screws and micrometer heads, allows the operator to move the part until the shadow aligns with the screen's crosshairs. The digital readout displays the exact X/Y position. The formula used (EΣxy = 2.5 + L/75 or 3.0 + L/50) means that the larger the part being measured, the slightly larger the potential error, but the system guarantees high precision even for medium-to-large profile components.

VI. Calibration & Maintenance

1. Daily Calibration: Use a certified glass linear scale or gauge block to verify the X and Y axis zero-points before starting inspections.

2. Clean the Glass Stage: Oils, fingerprints, or dust on the glass worktable will distort the projected shadow. Wipe the glass daily with a soft cloth and mild glass cleaner. Avoid using abrasive scrubbers.

3. Lens Maintenance: The objective lenses are precision optical components. Only blow off dust using a rubber bulb or compressed air, and use optical-grade lens tissue to clean smudges. Never touch the lens surface with bare fingers.

4. Environmental Protection: Keep the machine away from direct sunlight to prevent thermal expansion of the stages, and protect it from heavy vibration.