21.04.2020
Audit Insights: How Does a Factory Audit Go?
Identifying the right factory determines the future of your products, because the capabilities and capacity of your manufacturer have to align with your needs and expectations.
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1. Production Process and Common Quality Issues for Machine Tools
Click to review the detailed production process and common quality issues for machine tools.
2. Ensuring Machine Tools Safety & Compliance with Laboratory Testing
We arrange laboratory testing to confirm adherence to international safety and performance standards:
Safety
- ISO 12100: Safety of Machinery - General Principles for Design
- ISO 13849-1: Safety of machinery - Safety-related parts of control systems
- ISO 16090-1: Safety of Machine Tools - Machining Centres, Milling Machines:
- IEC 60204-1: Safety of Machinery - Electrical Equipment of Machines
- NFPA 79: Electrical Standard for Industrial Machinery
- ANSI B11 series (Machine Tool Safety Standards)
- ISO 19085-6, ISO 19085-8 (Safety of Woodworking Machines - Single Spindle Vertical Moulding Machines / Stationary Calibrating and Sanding Machines)
Accuracy
- ISO 230 – Test Code for Machine Tools
- ISO 10791 – Test Conditions for Machining Centres
- ISO 1708 – Test Conditions for Numerically Controlled Lathes
- ISO 8636 – Test Conditions for Portal-Type Milling Machines
3. Common Defects in Machine Tools Inspections
Functional & Performance Issues
- Inaccurate machining tolerances
- Excessive vibration or noise during operation
- Failure of automatic tool changers
- Spindle runout beyond specifications
- Control system malfunctions (e.g., CNC errors)
Structural & Mechanical Defects
- Misalignment of machine axes
- Loose or improperly secured components
- Cracks or deformities in castings/frames
- Leaking hydraulic or lubrication systems
- Worn or damaged bearings and guide ways
Electrical & Safety Concerns
- Faulty wiring or electrical connections
- Non-functional emergency stop buttons
- Inadequate guarding or safety interlocks
- Overheating of electrical components
- Missing or incorrect safety labels/markings
- Not grounding
Appearance & Finish Defects
- Scratches, dents, or paint imperfections
- Poor surface finish on machined parts of the tool
- Corrosion or rust spots
- Inconsistent color or coating application
Documentation & Labeling Issues
- Missing or incomplete operation manuals
- Incorrect technical specifications on nameplates
- Non-compliant warning labels
- Missing calibration certificates
4. Which Machine Tool Products Do We Have the Most Experience With?
CNC Machining Centers
- Vertical Machining Centers (VMC)
- Horizontal Machining Centers (HMC)
- 5-Axis Machining Centers
Lathes and Turning Centers
- CNC Lathes
- Manual Lathes
- Swiss-Type Lathes
Milling Machines
- Vertical Milling Machines
- Horizontal Milling Machines
- Universal Milling Machines
Grinding Machines
- Surface Grinders
- Cylindrical Grinders
- Tool and Cutter Grinders
Fabrication Machinery
- Press Brakes
- Shearing Machines
- Laser Cutting Machines
5. Our Machine Tool Quality Control Services
Product Inspection
Ensure machine tool quality, functionality, and craftsmanship meet your exact specifications.
Supplier Audits
Evaluate and verify manufacturers’ capabilities and quality management systems pre-engagement.
Laboratory Testing
Confirm machine tools comply with international safety, performance, and regulatory standards.
Check the loading of motors after pressing FEED HOLD when checking the machine in circular interpolation
MPG Function
6. How V-Trust Helps You Find the Right Machine Tool Supplier
We conduct supplier audits to verify production capabilities and compliance before order placement.
Factory Audit
Quick verification of supplier legitimacy through:
- Factory existence and document verification
- Basic production capacity review
- Contact person verification
In-Depth Factory Audit
A comprehensive evaluation covering:
- Production capacity & facility assessment
- Quality control system evaluation
- Social compliance verification
7. How V-Trust Helps You Control the Quality of Machine Tools
V-Trust's comprehensive quality control solutions cover every stage of your Machine Tools production, including Sample Checks, Production Monitoring, During Production Inspection, Pre-Shipment Inspection, and Container Loading Supervision, ensuring your products meet stringent quality and safety standards before they leave the factory.
Sample Check
During the sample check for Machine Tools, our engineers meticulously evaluate prototypes for critical aspects such as dimensional accuracy of key components, material hardness, surface finish, and the functionality of basic controls. This ensures that the foundational design and material choices meet your specifications and performance expectations.
Production Monitoring
Our on-site production monitoring for Machine Tools involves continuous oversight of manufacturing processes. We track critical assembly steps, verify the correct installation of precision components, monitor initial operational tests, and address any deviations in real-time to prevent systemic quality issues from escalating.
During Production Inspection
When at least 10% of your Machine Tools order is completed, a During Production Inspection is conducted. This inspection focuses on verifying the consistency of manufacturing processes, checking for early signs of defects like casting flaws, welding imperfections, or electrical assembly errors, allowing for timely corrective actions.
Pre-Shipment Inspection
The Pre-Shipment Inspection for Machine Tools is a thorough final assessment performed when production is 80-100% complete and packed. We verify overall functionality, precision, safety features (e.g., emergency stops, guarding), electrical integrity, and ensure all accessories, documentation, and packaging comply with your order and international standards.
Container Loading Supervision
Our Container Loading Supervision for Machine Tools ensures that your valuable equipment is loaded correctly and securely. We verify product quantity, inspect packaging for damage, supervise proper bracing and securing within the container to prevent shifting or damage during transit, and confirm that the container itself is suitable for international shipment.
8. The Most Related Sourcing Fairs in Asia
April 21-26, 2026
China International Machine Tool Show (CIMT)
China International Exhibition Center (Shunyi Hall), Beijing, P.R. ChinaAs one of the world's four most renowned international machine tool fairs, CIMT showcases a comprehensive range of metal-cutting and metal-forming machine tools, non-traditional machining equipment, industrial robots, automation systems, precision tools, measuring instruments, and smart manufacturing software.
https://www.cimtshow.com/en/index.html
October 26-31, 2026
Japan International Machine Tool Fair (JIMTOF)
Tokyo Big Sight, Tokyo, JapanJIMTOF is a leading global industrial trade show focusing on machine tools and related equipment. It serves as a hub for innovations in manufacturing technology, displaying cutting-edge advancements in precision machinery, metalworking, robotics, machine tool accessories, grinding wheels, and control systems.
https://www.jimtof.org/en/
April 13-17, 2026
Seoul International Machine Tool Show (SIMTOS)
KINTEX Korea International Exhibition Center, Goyang, Gyeonggi, South KoreaSouth Korea's largest machine tool exhibition highlights smart manufacturing, AI-driven automation, high-precision CNC machining, industrial robotics, IoT-enabled CNC technology, and advanced cutting and forming technologies.
https://simtos.org/
Why Choose V-Trust for Machine Tools Quality Control?
20
Years of Experience
650+
Trained Inspectors
10
Asian Countries
13,000
Satisfied Clients
Asia's leading product inspection company with full-time, professionally trained inspectors and comprehensive accreditation for inspection, audit, and lab testing services.
Machine Tools Quality Control: Frequently Asked Questions (FAQ)
Why do I need product inspections for machine tools?
If you are worried about or have experienced problems such as poor quality, incorrect shipments, or wrong packaging for goods imported from Asia, product inspection services is your solution. V-Trust product inspection service can help you have accurate understanding about the quality of the goods without going to the factory by yourself.
Do I need to send you an approved sample for machine tools?
It would be great if you can send the approved sample to V-Trust before the inspection for reference. Compared with product photos or specification documents, a real product sample allows V-Trust engineers to do a more thorough comparison check.
How many days in advance should I book the pre-shipment inspection?
Though sometimes it's possible to book next-day inspections for many manufacturing clusters where V-Trust has a large team of full-time inspectors, we recommend booking with us at least three days in advance. Early booking is important for appropriate scheduling and good preparation before the inspection.
Who will I be in contact with throughout the whole process?
There will be one dedicated account manager who will be assigned as your main contact point at V-Trust. You will receive prompt responses whenever you have any questions regarding the inspection arrangement.
How long does it take to know the inspection result?
The official report, reviewed and signed by an authorized V-Trust technical manager, will be available within 24 hours after each inspection. Same day report is available if you would like to know about the inspection findings on the same day. V-Trust has the highest same day report rate in the inspection industry.
What if I have questions after I check my V-Trust report?
Please don’t hesitate to contact us whenever you have any questions. V-Trust team is always available even after the inspection is completed.
Request Your Inspection Today
Ready to ensure the quality of your products? Contact our team to discuss your specific requirements.