ACCRETECH DM43801 Coordinate Measuring Machine (CMM) Probe Styli

Overview

The ACCRETECH DM43801 is a precision-engineered coordinate measuring machine (CMM) probe stylus designed for high-accuracy dimensional metrology in demanding quality control and R&D environments. As part of Tokyo Seimitsu Co., Ltd.’s (trading as ACCRETECH) globally recognized portfolio of metrology components, the DM43801 conforms to ISO 10360-5 and VDI/VDE 2617 standards for probe performance verification. It operates on the fundamental principle of mechanical contact sensing—transmitting displacement data from the ruby or ceramic ball tip through a rigid, thermally stable stem to the probe head’s internal transducer system. The stylus is calibrated and certified for use with ACCRETECH’s line of high-resolution CMM systems—including the GLOBAL S, FORMTRACE PA, and ROUNDTEST series—as well as compatible third-party platforms adhering to standard M3 or ISO 10360-compliant interface protocols.

Key Features

• Precision-ground ruby or sapphire ball tip (standard Ø1.0 mm, optional sizes available) with sphericity ≤0.08 µm per ISO 4287
• Stem material: High-strength stainless steel or carbon fiber (model-dependent), engineered for minimal thermal expansion (CTE ≤10.5 × 10⁻⁶/K)
• Total stylus length defined per ISO 10360-5: distance from rear mounting face to center of probing sphere
• Effective Working Length (EWL) clearly specified for each configuration—critical for uncertainty budgeting in GD&T evaluation
• Threaded mounting interface compliant with ISO 10360-5 M3 × 0.5 mm standard, ensuring repeatable torque application (0.1–0.15 N·m)
• Traceable calibration certificate included, covering tip geometry, stem straightness (<0.5 µm/m), and angular deviation

Sample Compatibility & Compliance

The DM43801 is optimized for tactile measurement of machined metallic, ceramic, and polymer components with surface roughness Ra < 6.3 µm. Its design supports both single-point probing and scanning modes when integrated with ACCRETECH’s PH10M or TP20-compatible indexing heads. The stylus meets requirements for ISO/IEC 17025-accredited laboratories conducting dimensional inspection per ASME Y14.5, ISO 1101, and ISO 14405. All production units undergo 100% dimensional screening and are supplied with individual test reports verifying compliance with JIS B 7451 and JJG 1021 metrological regulations. For regulated industries (e.g., aerospace, medical device manufacturing), the stylus supports full traceability to NMIJ (National Metrology Institute of Japan) reference standards.

Software & Data Management

When deployed within ACCRETECH’s FORMTRACEPA or QUICKVISION software ecosystems, the DM43801 enables automated stylus qualification routines—including dynamic bending compensation, tip calibration mapping, and EWL-based error correction. Measurement data is stored in native .qvp or .csv formats with embedded metadata (date/time stamp, operator ID, environmental conditions). The system supports audit trail functionality aligned with FDA 21 CFR Part 11 requirements when configured with user authentication and electronic signature modules. Raw probe deflection signals are sampled at ≥1 kHz, enabling post-processing analysis of contact force profiles and surface interaction dynamics.

Applications

• Geometric dimensioning and tolerancing (GD&T) verification of cylindrical features, flatness, parallelism, and position
• First-article inspection and PPAP submission support for automotive Tier-1 suppliers
• Tooling validation for injection molds and die-cast dies requiring sub-micron repeatability
• Calibration artifact verification against master gage blocks, ring gauges, and step gauges
• Reverse engineering workflows where tactile point-cloud acquisition supplements optical scanning

FAQ

What is the recommended maximum overhang for the DM43801 when used with a 3 mm diameter stem?

For optimal stiffness and repeatability, ACCRETECH specifies a maximum overhang of 30 mm for 3 mm stem variants—exceeding this requires EWL correction and expanded uncertainty assessment.

Can the DM43801 be recalibrated after tip replacement?

Yes—recalibration must be performed by an ISO/IEC 17025-accredited metrology lab using certified reference spheres and laser interferometric verification of tip center location.

Is thermal drift compensated in standard DM43801 configurations?

No active compensation is built into the stylus itself; however, the associated CMM controller applies real-time temperature compensation based on ambient and spindle temperature inputs per ISO 230-3 Annex D.

Does the DM43801 support multi-tip configurations?

Not natively—the DM43801 is a single-tip stylus. Multi-tip functionality requires integration with ACCRETECH’s MH20i or PH10MQ indexing heads and corresponding software licensing.