TensileMill CNC Classic Upgrade – Flat Tensile and Charpy/Izod Impact Specimen Preparation System

Standards

ASTM E23, ASTM E8, ISO 6892-1, DIN 50125, JIS Z2201

Description

The TensileMill CNC – Classic Upgrade is a hybrid CNC specimen preparation system offered by our partner, TensileMill CNC. It is designed for the precise machining of both flat tensile and Charpy/Izod impact test specimens in-house. The system integrates the dedicated TensileSoft™ specimen preparation interface with a FANUC industrial controller, making operation suitable for both trained CNC machinists and laboratory personnel with minimal machining background.

The system supports specimen preparation for a range of standardized testing methods, including:

• ASTM E8 for metallic tensile specimens
• ASTM E23 for Charpy and Izod impact specimens (U- and V-notch)
• ISO 6892-1 for tensile testing of metallic materials
• DIN 50125 for standardized tensile specimen geometries
• JIS Z2201 for mechanical test specimen dimensions

The machining envelope accommodates specimens up to 14" (350 mm) in length, 2" (50 mm) in width, and 0.5" (12.5 mm) in thickness. A 3.2 kW (3 HP) servo-driven spindle provides repeatable dimensional stability with positioning accuracy of 0.0003" (0.008 mm). The system is capable of machining materials up to 60 HRC. When equipped with the triple clamping fixture, up to three stacked sets of 1.0" (25 mm) thick specimens can be prepared in a single setup, supporting both small research batches and high-throughput QC workflows.

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The World’s First Hybrid CNC Solution for Tensile and Impact Specimen Preparation

The TensileMill CNC – Classic Upgrade is a hybrid CNC specimen preparation system designed to machine both flat tensile and Charpy/Izod impact test specimens within the same platform. This configuration supports standardized preparation workflows in laboratories that require consistent dimensional accuracy for both tensile and impact testing programs.

For impact samples, the system can be used in conjunction with an external Impact Notching Machine, allowing the preparation of U- and V-notched specimens in accordance with ASTM E23. This pairing provides a controlled sequence for rough milling, finishing passes, and final notching, ensuring the dimensional uniformity required for repeatable impact energy results.

The Classic Upgrade supports impact sample preparation with surface finish tolerances below 75 Ra, and when configured for multi-sample operation, up to 8 specimens can be prepared in the same machining sequence. This workflow reduces overall specimen preparation time and supports higher sample throughput in production and research environments.

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System Features

This system incorporates mechanical and software elements that support stable and consistent specimen preparation. It is designed so that operators can work with different specimen sizes and materials without complex setup steps. Below are the primary functional characteristics of the unit:

• Cast iron machine base with linear guideways provides rigidity and supports stable cutting performance during continuous operation.
• Automatic lubrication system distributes oil to rails and bearings to maintain smooth motion across all axes.
• TensileSoft™ control interface receives remote software updates, with major revisions deployed without requiring on-site service visits.
• Preloaded specimen geometry library includes templates aligned with ASTM E8, ASTM E23, ISO 6892-1, DIN 50125, and JIS Z2201 dimensional standards.
• Custom geometry entry allows operators to define gauge length, reduced section width, fillet radius, shoulder length, and total specimen length directly in the software.
• FANUC controller platform supports guided specimen preparation and also allows manual CNC programming for machining additional components when needed.

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Impact Specimen Preparation Capabilities

The TensileMill CNC – Classic Upgrade supports standardized machining workflows for Charpy and Izod impact test specimens. The system accommodates the two most commonly used pendulum impact specimen formats:

• 10 × 10 × 55 mm
• 7.5 × 10 × 55 mm

These dimensions are prepared in accordance with ASTM E23, with surface finish and dimensional uniformity suitable for repeatable impact energy measurements.

For final U- and V-notch formation, the system can be paired with a motorized Impact Notching or Broaching unit, allowing operators to notch one or two samples at a time in compliance with ASTM procedures. This configuration supports efficient, controlled preparation of batches for routine testing or development work.

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Technical Specifications

Parameter	Specification
Working / Traveling Area	15.75 × 15.75 × 8 in (400 × 400 × 200 mm)
Gantry Clearance	7.87 in (200 mm)
Spindle Nose Clearance	1.97 in (50 mm)
Spindle Motor	3.2 kW water-cooled spindle
Spindle Taper	ER20 collet (ISO20 optional)
Axis Drives	PMI precision rolling ball screw drives
Axis Servo Motors	FANUC
Axis Bearings	NSK precision-grade bearings (Japan)
Max Traverse Speed (X/Y/Z)	10,000 mm/min
Feed Rate	1–3,000 mm/min
Positioning Accuracy	±0.13 mm
Repeatability	±0.02 mm
Coolant Pump Flow	≥ 20 L/min
Spindle Speed	24,000 rpm
Max Torque at Low RPM	2.8 N·m
Machine Frame	Fully cast iron body on casters
Controller Interface	FANUC 10.4" touch screen (0i-MF Plus)
Work Table	T-slot cast iron table with tensile specimen clamping fixture
Operating Voltage	220V / 50–60 Hz / 3-phase
Machine Dimensions (W × D × H)	59 × 53 × 79 in (1500 × 1350 × 2000 mm)
Recommended Floor Area	72 × 72 in (1829 × 1829 mm)
Weight	2,640 lbs (1,200 kg)