Quality is very important in any industry and this also applies to manufacturers of prototypes and custom mechanical parts. So, as a qualified supplier, how can you carry out quality control in CNC prototype production?
Clearly understand and meet customer requirements
1. Understand the purpose of the customer's products
Project review:
The design validation prototype is designed to help customers move from concept to reality and maximize the visual outcome. At this stage, how quality control is achieved in the production of the appearance is very important.
Technical verification: During the product development phase, the technical prototype helps the customer test the product to meet design specifications and verify material, mechanical and optical properties. At this stage, obtaining tighter tolerances can help verify assembly and functionality in use.
Verification of production in small series:
In this phase, the production line is tested, including volume, time, error detection and optimization. At the same time, it can be used for sales, conducting surveys and surveys for market feedback and determining the quality of subsequent production.
At this stage, the result of quality control in manufacturing is brought as close as possible to the final product, the quality of appearance and the accuracy of tolerances are strictly controlled.
2. Understand customer drawings
How should customer drawings be understood? We must clearly understand each hole and each part of the drawings, as well as the true meaning of tolerances. Because CNC machining generally has some machining limitations, such as: For example, undercuts, radii, etc. And understanding the drawings can help us see if these limitations will affect the client's design or if other ways may be necessary to meet the client's design.
For example, see the image below for a three-plate weld. Two of the surfaces used for mounting have very strict verticality tolerance requirements. At this point, the processing order must be adjusted. First, material of a certain size must be sawed with a milling cutter; then these three plates are welded together; Finally, the surface of the panels is CNC machined so that these two surfaces meet the verticality tolerance requirements. Even if you try, you will get a bad result if you change the edit order. That's why it's so important to know the meaning of the drawings.
Ensure ISO certified quality control system in manufacturing
Six Rigorous Workflows for Quality Control in Manufacturing
1. Double-check orders and drawings
In the quotation phase, the engineer will evaluate the feasibility of machining and make machining suggestions (Design For Manufacturing). After placing the order, the production team again reviews the drawings, process standards and production plan. Double-check drawings, treat each order with care, and make sure you meet customer requirements for quality control in manufacturing.
2. Incoming goods inspection
Check the size, quality and quantity of the material and make sure it meets specifications.
3. The first answer key test
IPQC measures important dimensions based on customer drawings to verify that the dimensions meet requirements.
4.Examine the first piece
The first part after CNC machining must be fully inspected to determine if it meets specifications. In series production, it is necessary to carry out a random inspection every 5 pieces to guarantee the continuity and quality of production.
5. Root cause analysis and corrective actions for non-conforming products
If a test cannot be stopped in time, analyze each process, including clamping, tool positioning accuracy, etc. Find the reason and fix it to meet quality control in CNC prototype manufacturing.
6. Final inspection, test reports and certification are required
OQC checks each dimension of the drawing with coordinate measuring machine (CMM), 3D scanner, micrometers, pen gauge, surface roughness tester and other quality testing equipment and provides the report to customers.
University Degree
Wayken has a sales team with solid manufacturing experience that clearly understands customer needs and enables effective communication with engineers. Furthermore, our operational quality control in manufacturing is ISO 9001:2015 certified and our rigorous production process ensures that we achieve continuous quality and customer satisfaction in CNC machining. If you are looking for a supplier of high-quality prototypes and custom mechanical parts, do not hesitate to contact us.
