Tips to Reduce CNC Milling and Machining Cost
Every business aims to deliver high-quality products while keeping costs under control. This section offers some key suggestions to optimize your CNC machining process and reduce CNC milling cost, without compromising the integrity of your parts.
Simplified Design
Minimize the complexity of your design as much as possible. Simple designs often require fewer operations and less time on the machine, thereby reducing costs. For instance, opt for designs that don’t require the use of 5-axis CNC machines unless absolutely necessary. Additionally, removing unnecessary features and reducing the amount of intricate details can also lead to significant savings.
Material Selection
The material you choose can significantly impact the cost. For instance, machining costs for metals like titanium are higher due to their strength and toughness. On the other hand, materials like aluminum and plastics are often cheaper to machine. Always opt for the most cost-effective material that still meets your project’s needs.
High Volume Orders
It’s a basic principle of economics that the more you produce, the lower the cost per unit. This principle holds true for CNC machining as well. Higher volume orders allow you to distribute the setup and programming costs across more parts, reducing the cost per unit. Planning ahead to allow for larger orders can thus significantly reduce your CNC milling costs.
Avoid Unnecessary Precision
Each additional level of precision requires more time, specialized tools, and often more experienced operators. If the highest levels of precision are not necessary for the functionality of your part, avoid specifying tolerances that are tighter than necessary. This will save significant amounts of time and effort, and thus costs.
Use Standard Sizes and Tolerances
Whenever possible, utilize standard tool sizes and tolerances. Custom tools and tight tolerances can add significant cost to your project. Also, standard tools are more readily available, which can help avoid delays.
Optimize for Machinabilit
Some designs are more difficult to machine than others. Sharp internal corners, deep narrow structures, and complex surface finishes all increase the machining time and cost. Designing with the machining process in mind can help to keep costs down.
Minimize Material Waste
Optimize the part layout within the raw material. By reducing the material waste, you not only save on material costs, but also contribute to sustainability. For this, it may be helpful to consult with your CNC machine shop, as they will have extensive experience in optimizing layouts for minimal waste.
Consider Alternative Manufacturing Methods