Before the parts are mass-produced, whether you want to customize a simple prototype or low volume production, reasonable control of manufacturing costs is an important part of CNC machining. Fortunately, the decision you make as a designer directly affects the final pricing of the product. Through the design of the machining technique, you can help you optimize the parts you want to produce, and satisfy you with the least cost and the most suitable production process. The design and market requirements make your products more competitive and advantageous. Here are some suggestions from us. If you are still not sure which one is the best for your process, firstname.lastname@example.org.
The price of CNC machined parts depends on the following:
T Processing time:The longer it takes to machine a part, the higher its cost. Processing time is often the main cost driver for CNC machining.
T Cost:These are related to CAD file preparation and process planning and are important for low volume production. This cost is fixed and there is an opportunity to reduce unit prices by leveraging "economies of scale."
T Other manufacturing costs:When you design parts with special requirements (for example, when you define strict tolerances or design thin walls), special tools, more precise quality control, and more processing steps may be required - at lower Processing speed. This of course affects the total manufacturing time (and price).
It is now clear where the cost of CNC machining cost comes from, let us see how to optimize the design to reduce the cost of this process..
Because CNC machining tools are cylindrical and cannot be directly machined into perpendicular, we recommend adding a circular arc radius at the corner of the cavity. The smallest milling cutter diameter for CNC machines is 1.0mm, so the smallest rounded corner that can be machined is R0.5. With a machining depth of 5.0 mm, the corner radius can be reduced by using a tool with a smaller diameter. This means that although it takes a long time to perform multiple milling, it increases processing time and cost. To minimize costs:
1. Add the radius of the arc at the corner of the cavity (moderate).
2. Try to use the same radius in all internal edges.
Professional Tip: Ideally, the R-angle radius should be slightly larger than the tool radius that will be used to machine the cavity. This reduces the load on the tool and will further reduce your manufacturing costs. For example, if your design has a 12.0mm deep cavity, add a 1.5mm (or larger) radius to the corner. This will allow a ø3.0mm tool to be machined for better efficiency