一,The main request from the automotive sector for CNC machining delivery time
1. Quickly meet the needs of R&D iterations
In the automotive business, the time between iterations of products keeps getting shorter. For example, the time it takes to go from an idea for a new energy vehicle to mass manufacturing has been cut down to 18 to 24 months. CNC machining needs to quickly make and test prototypes of complicated parts. For instance, a top new energy vehicle firm needs its suppliers to send the first batch of samples within 72 hours of getting the design documentation so that wind tunnel testing and structural optimisation may begin. Because of this need, CNC machining plants have to put up a "24-hour sampling mechanism." This cuts the time it takes to programme and debug from the usual 48 hours to less than 8 hours using pre-configured process libraries, standardised tool management, and other technical methods.
2. The ability to deliver a lot of orders on time
Making parts for cars includes a lot of scale impact features. For example, a single model of an engine cylinder block can be made 500,000 times a year. This means that more than 20,000 pieces of CNC machining are needed each month. For this kind of order, suppliers need to have steady and long-term production capability, which includes:
Utilisation rate of equipment: By using AI scheduling algorithms, a top CNC machining plant has raised the overall equipment efficiency (OEE) from 75% to 92%. This is because they can make the most of their equipment through smart scheduling.
Resilience in the supply chain: Set up a regional supply chain network, like a 2-hour response circle between a business in Shenzhen and 50 surface treatment suppliers in the area, to make sure that raw materials and post-processing operations are always connected;
Quality consistency: With IPQC (Process Inspection) every two hours and CMM coordinate measurement, the size difference between batches is kept to within ± 0.005mm.
3. The ability to adapt production to meet the needs of unique requests
As the trend of personalised customisation grows in the car industry, CNC machining needs to be able to handle small quantities and a wide range of requests. For instance, a high-end brand offers automobile buyers full customisation options, from the colour of the body to the layout of the interior. This means that suppliers need to be able to swap production lines within 72 hours. This means:
Modular process design: Break down complicated pieces into standard process modules and use combination calls to quickly switch between them;
Digital twin technology uses virtual simulation to check processing paths ahead of time, which cuts down on the time needed for on-site troubleshooting.
System for automated fixtures: With quick-change and flexible fixtures, the time it takes to replace the mould goes from 2 hours to 15 minutes.
二, Technical support system to guarantee delivery of CNC machining
1. A big step forward in high-speed machining technology
The five-axis linkage machining centre can clamp and shape complex surfaces all at once by coordinating the swing of the spindle and the rotation of the axis. For instance, while machining turbocharger impellers, a five-axis machine tool may cut the time it takes from 12 hours to 1.8 hours and improve the surface roughness from Ra6.3 μ m to Ra1.6 μ m. By using 55 five-axis machining centres, a specific company has been able to increase its production capacity on a huge scale and cut the delivery time for typical items to 7 days.
2. Improving digital processes
Analysis of DFM (Design for Manufacturing): Use simulation software throughout the design phase to find possible machining problems and improve structural aspects ahead of time. Through DFM reports, a certain company helped customers cut down on design changes by 30% and R&D cycles by 25%.
Adaptive machining technology: This technology uses sensors to keep an eye on cutting force, tool wear, and other factors in real time and changes machining techniques on the fly. Adaptive cutting can make tools last 40% longer and cut down on delay caused by tool changes while machining aluminium alloy cylinder bodies, for example.
3. Smart Production Management System
The Manufacturing Execution System (MES) lets you see how your order is progressing in real time. One company has used the MES system to make its delivery time predictions 98% more accurate.
AGV logistics automation: using unmanned handling vehicles to automatically move materials around, which cuts down on delays caused by people doing things by hand;
Cloud collaboration platform: Creating a digital environment for customers to work together on design and production. A specific technology has made communication 60% more efficient by letting people share data in real time, which cuts down on the need to redo work because of information lag.
三,The practice of managing delivery times in industry-leading businesses
Shenzhen Weimaite CNC machining is a good example of how to guarantee both delivery time and quality at the same time by using the following methods:
Full chain quality control system: There are 12 quality control steps that may be followed to trace the whole process from reviewing quotes to analysing QE data, with a yield rate of 99.8%.
Large scale production capacity layout: has 55 CNC machining centres and 3+2 machining technology, which lets it process numerous complex parts at the same time, boosting productivity by 15%.
Quick response system: Set up a 24-hour sampling crew, guarantee to supply urgent orders within 24 hours, and finish 25 sample samples for urgent products within 10 days;
Deep collaboration in the supply chain: Forming strategic alliances with nearby raw material suppliers to get supplies just in time (JIT) and speed up inventory turnover by 40%.
