The SCHNEEBERGER NORMA series is a high-precision 5-axis CNC tool and cutter grinding machine manufactured in Switzerland, designed for the production and regrinding of complex cutting tools. Models such as NORMA NGC feature:

• Travels (X/Y/Z): 470 / 390 / 325 mm
• Spindle: HSK50 interface, 10 kW power, 1,000–12,000 rpm
• Control: FANUC 31i or SCHNEEBERGER proprietary system with QUINTO software
• Workpiece capacity: Ø400 mm × 300 mm length
• Machine weight: ~4,800 kg

Before purchasing a used or surplus unit, it’s essential to carry out a complete verification process from inspection to installation. Below is a structured technical and commercial checklist.

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1. Initial On-Site Inspection

Visual and Structural Condition

• Examine for cracks, rust, oil leaks, or missing covers.
• Check paint consistency (a recent respray might hide prior damage).
• Verify if the machine was used in a clean, climate-controlled tool room or a dusty production area.

Maintenance Records

• Review spindle hours and service logs.
• Ask for the last calibration or geometry report.
• Confirm whether major components (spindle, ball screws, servo drives) were replaced.

Control System and Software

• Confirm the CNC version and software (e.g., QUINTO 5.x).
• Check for backup disks, license dongles, and update compatibility.
• Ensure availability of support and spare parts for that controller version.

Operational Environment

• Verify electrical supply (400 V / 63 A), cooling requirements, and dust extraction system.
• Ensure accessories such as coolant filtration units and wheel changers are present and functional.

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2. Technical Condition – Specific to NORMA

a) Axes and Mechanics

• Check ball screws and linear guides for backlash, noise, or vibration.
• Test rapid traverse speeds (typically up to 20 m/min) and repeatability.
• Inspect A-axis and C-axis rotary tables for rotation smoothness and indexing accuracy (A: ISO50 carrier; C: 380° rotation).

b) Spindle and Grinding System

• The main grinding spindle (HSK50, 10 kW, 12,000 rpm) must run quietly and without excessive heat buildup.
• Check radial and axial runout using a dial indicator.
• Inspect tool clamping surfaces and wheel adapters for wear.
• Verify the automatic wheel changer operates correctly and aligns precisely.

c) Automation and Loading System

• Inspect pallet changer or robot interface if equipped.
• Verify hydraulic and pneumatic circuits for leaks or low pressure.
• Test the tailstock, collet chuck, or workholding system for rigidity.

d) Coolant, Lubrication, and Filtration

• Check coolant tanks for contamination and bacterial growth.
• Ensure centralized lubrication systems function on all axes.
• Verify coolant chiller, cabinet air conditioning, and filter systems operate properly (important for Swiss precision electronics).

e) CNC Control, Electronics, and Sensors

• Confirm the control boots without alarms.
• Test emergency stop, interlocks, and all sensors.
• Inspect servo drives, cables, and encoders for wear or previous repair marks.
• Review alarm history for recurring servo or spindle faults.

f) Accuracy and Calibration

• Perform geometric verification (straightness, perpendicularity, spindle runout).
• Conduct a test grind to check surface finish and dimensional precision.
• Compare measured values to factory specs (repeatability ~0.000025 mm).
• Review any available Renishaw or laser calibration reports.

g) Physical and Site Compatibility

• Confirm machine weight (≈4.8 tons) and floor load capacity.
• Check workshop vibration, humidity, and temperature stability.
• Ensure the power supply and network connection meet SCHNEEBERGER’s installation standards.

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3. Contract and Commercial Checks

• Machine Ownership: Verify legal ownership and serial number authenticity.
• Warranty: Seek a limited test-run or 30-day functional guarantee if possible.
• Spare Parts: Confirm parts supply and software support availability in your region.
• Installation & Commissioning: Clarify who handles transportation, alignment, and calibration.
• Insurance & Logistics: Use specialized machinery movers; insure during transport.
• Payment Terms: Consider partial payment after a successful test or FAT (Factory Acceptance Test).

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4. Pre-Installation Preparation

• Prepare foundation and anchor points per machine drawing.
• Install power line filters, coolant systems, and dust extraction before delivery.
• Have an alignment and level test kit ready for setup.
• Ensure your operator or technician is trained for NORMA operation and QUINTO programming.
• Perform final geometry verification after installation.

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5. Key Decision Criteria

Factor	Details
Condition	Evaluate mechanical, electrical, and cosmetic health.
Software & Control	Ensure the version is serviceable and licensed.
Total Cost	Machine + transport + installation + calibration + training.
Accuracy	Verify with test grind and calibration data.
Support	Local or regional technical support availability.
Suitability	Match with intended tool geometry and production volume.

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Summary

The SCHNEEBERGER NORMA 5-Axis CNC Tool Grinder is a Swiss-made precision machine built for demanding tool manufacturing and regrinding applications. When purchasing a pre-owned or surplus unit, meticulous inspection of its mechanical, electronic, and software systems — along with proper installation and calibration — ensures you obtain the full Swiss-level performance the NORMA is known for.