CNC Machining Quality Control You Can Trust
Discover how we ensure consistent quality in every CNC machined part with ISO-certified processes, strict inspections, and advanced precision tools.
- Final Product Approval Rate ≥ 98%
- On-Time Delivery Rate ≥ 95%
- Customer Satisfaction Rate ≥ 95%
Confiance de la part de
17 Years Of Experience
in CNC Parts Machining
Witcool est qualifié avec la certification de la norme de qualité mondiale ISO9001:2015 et suit strictement un système de gestion de la qualité en production.
Notre équipe de contrôle qualité se consacre à garantir la qualité des matériaux, le contrôle du traitement et le contrôle de la qualité sortante pour répondre à toutes les exigences des clients. Nous nous concentrons sur l'amélioration continue de notre gestion de la qualité et de la qualité des produits.
Excellence in Custom Manufacturing
Witcool is committed to continuous improvement and optimization across all aspects of custom manufacturing — from prototyping to mass production — including CNC machining, rapid prototyping, and quick tooling.
We strictly adhere to the ISO 9001:2015 quality management system, applying standardized manufacturing procedures and utilizing advanced testing equipment. Every stage of the production process is carefully measured and inspected to ensure your project meets the highest quality standards.
Our Quality Policy
Advanced manufacturing methods, rigorous quality control, and strict standards ensure precision and durability.
Scientific Management: Standardized processes, professional development, increased efficiency, and the implementation of best practices.
Lean Manufacturing: Customer-oriented production, process optimization, cost control, and supply chain improvement.
Quality and Efficiency: Enhanced quality control, improved communication, and employee training to deliver high-quality products.
Innovation and Development: Promotion of continuous learning, knowledge management, support for innovation, and strengthening company cohesion.
Tolérances dans l'usinage CNC
Witcool utilise des machines CNC avancées pour garantir une haute précision dans l'usinage des pièces. Nous proposons des tolérances allant jusqu'à ±0,005 mm, ce qui nous permet de produire des composants avec un écart minimal et une précision exceptionnelle.
| Icône | Normes | Tolérance | Icône | Normes | Tolérance | |
|---|---|---|---|---|---|---|
| Tolérance commune | 0,0004" (±10μm / ±0,01мм) | Tolérance de diamètre | 0,00004" (±1μm / ±0,001мм) | |||
|
Platitude | 0,00004" (2 μm / 0,002 mm) |  |
Rectitude | 0,00004" (1 μm / 0,001 mm) | |
 |
Perpendicularité | 0,0002" (5 μm / 0,005 μm) |  |
Parallélisme | 0,0001" (2,5 μm / 0,0025 μm) | |
 |
Rondeur | 0,0002" (5 μm / 0,005 μm) |  |
Concentricité | 0,00002" (0,5μм / 0,0005мм) | |
 |
Cylindricité | 0,0002" (5 μm / 0,005 μm) |  |
Symétrie | 0,0003" (8 μm / 0,008 μm) | |
 |
Déroulement circulaire | 0,00004" (1 μm / 0,001 mm) |  |
Tolérance de position | 0,005 mm |
Our Quality Control Flow
At Witcool, our strict quality control process ensures precision from design to the final product.
Inspection Equipment
Our production facilities are equipped with modern inspection equipment, enabling precise quality checks at every stage of manufacturing. This ensures that every part strictly meets your requirements and industry standards.
2.5D CMM
Used for checking the dimensions and geometric tolerances of machined parts to ensure that machining accuracy meets specified requirements.
Coordinate Measuring Machine (CMM)
Provides precise three-dimensional measurements of dimensions and coordinates, ensuring that parts conform to design drawings.
Optical Measuring Machine
Used for non-contact measurement of complex shapes and surfaces, ensuring geometric accuracy and control.
Contour Measuring Machine
Inspects the profile and contour of parts, helping to verify compliance with design requirements and standards.
Surface Roughness Tester
Evaluates surface quality by measuring roughness, which is crucial for the functionality and durability of parts.
Laser Interferometer
Monitors the accuracy of geometric parameters and part alignment using high-precision laser measurements.
Height Gauge
Used for measuring height, depth, and other part dimensions, typically in combination with a surface plate.
Concentricity Tester
Measures the concentricity of holes or shafts to ensure proper alignment and functioning of mechanical systems.
Coating Thickness Gauge
Controls the thickness of coatings during production or repair to ensure compliance with standards for durability and protection.
Hardness Tester
Measures the hardness of materials, helping to determine their resistance to mechanical stress and wear.
Our Quality Documentation
Witcool follows strict procedures to ensure that custom parts meet the highest manufacturing standards. Upon request, we can also provide certificates and reports. The following quality documents apply to all our manufacturing technologies, including CNC machining, sheet metal fabrication, 3D printing, and die casting.
Coordinate Measuring Machine (CMM) Inspection Report
Provides precise measurements using a coordinate measuring machine to verify that the product meets specified dimensions.
Material Certificate (Metals Only)
Confirms the composition and quality of metals, ensuring materials meet standards and traceability requirements.
Standard Measurement Protocol
Ensures accuracy and consistency of measurements using calibrated tools and adherence to specified accuracy and tolerance requirements.
First Article Inspection Report (FAIR)
Includes a detailed inspection of the first production sample to confirm compliance with all design and contractual requirements.
RoHS Certificate
Verifies compliance with the EU RoHS Directive, ensuring the product is free of hazardous substances and meets safety regulations.
REACH Compliance Certificate
Confirms compliance with the EU REACH Regulation, ensuring safe management of chemical substances and adherence to environmental standards.
Certificate of Conformance
Certifies that the product meets all required quality and safety standards as specified in the requirements and drawings.
Amélioration continue
At Witcool, we understand that ongoing enhancement of quality and efficiency is key to maintaining competitiveness. That’s why we are committed to continuously improving and optimizing two core areas:
Implementation of Advanced Equipment and Technologies
We evaluate and adopt cutting-edge equipment and CNC machining technologies every two years to ensure our manufacturing processes stay aligned with the latest industry advancements. These upgrades not only improve production efficiency but also significantly enhance the precision and quality of our products. For example, we recently introduced a state-of-the-art 5-axis machining center from Switzerland, which has greatly expanded our capability to process complex components.
Employee Training and Development
To ensure our team maintains up-to-date knowledge and skills, we conduct internal training sessions every three months and invite external experts for technical exchanges at least twice a year. In addition, we actively participate in training programs organized by industry associations such as the China Mechanical Engineering Society (CMES) and the China Machinery Manufacturers Association (CMMA). These initiatives help our staff stay informed about the latest industry trends and improve their ability to solve practical challenges.
Questions & Answers
At Witcool, we maintain strict control over every stage of the CNC machining process, ensuring high product quality and precision. We deliver reliable solutions by adhering to standards and implementing innovations to enhance every project.
Why is quality control important in CNC machining?
Quality control ensures that products meet established standards, helps prevent defects, maintains customer satisfaction, and supports the overall reliability of the manufacturing process.
What are the key quality control parameters in CNC machining?
The main parameters include dimensional accuracy, tolerances, surface finish, and material integrity. Adhering to these is essential for the functionality of machined components.
How is quality inspection carried out in CNC machining?
At Witcool, quality inspection includes dimensional measurement, material analysis, and the use of advanced inspection equipment such as CMMs and optical systems to verify compliance with specifications.
What role do skilled operators play in ensuring quality?
Our skilled operators detect subtleties that automated systems might miss, ensuring optimal machine performance and early identification of potential issues.
How can clients be assured of confidentiality during CNC machining?
Witcool prioritizes confidentiality by applying strict protocols, including secure file transfers and non-disclosure agreements (NDAs), to protect your designs.
What happens if a quality issue is found with a CNC-machined part?
If a quality issue is identified, we halt production, investigate the root cause, and implement corrective actions to prevent recurrence. Clients are promptly informed of any delays or issues.
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