Computer Numerically Controlled (CNC) machining is swift, accurate, and versatile. The machine is programmed to follow a set of instructions that tell them how to cut and shape the material. This manufacturing method is used to create turned parts with a very high degree of accuracy. CNC machines serve the engineers one of the most cost-effective ways to create complex parts, with exceptional accuracy and repeatability. Producing CAD designs for CNC machining can be troublesome to avoid manufacturing inaccurate or defective components. However, this ensures that each part is the same as the one before it, which is significant for precision engineering applications.
This blog will focus on some of the most pivotal design considerations for CNC-turned parts
The process of material selection
The overall design can be considerably affected owing to the material you use for a CNC-turned-part. Therefore, to make the best choice, it is vital to consider the application and desired properties of the part, as well as the specific capabilities of the CNC turning process.
What measures should be taken?
- Determine material requirements.
The characteristics including functionality, electrical properties, strength, and hardness of the material should be considered to be the most suitable candidate for your project. - Recognize potential material options.
- Choose the most appropriate material- To ensure the quality of the part determining the best material is a crucial one
Physical appearance
Although aesthetics is not considered the primary when choosing a material, in some cases, its significance does matter. For certain products, the physical appearance determines the general acceptability of such products by the consumers. Metals do possess a good surface finish after machining, thus requiring less work during polishing.
Surface finish
Surface finish is one of the most important parameters when considering the design of a CNC Turned Part. An incorrect selection of material or tooling can lead to poor results. Therefore, achieving the desired surface finish can be challenging. A part with a high-quality surface finish will operate more smoothly and efficiently whereas a part with a poor surface finish can cause several problems, including increased friction, excessive wear, and diminished aesthetic appeal.
Availability
When selecting materials for CNC machining, availability is an important aspect. It is recommended to choose materials that fit into the functional requirements and are readily available for use, especially if the part will be produced in large numbers. Easily available materials ensure that the CNC machining is done in the least possible time and efficiently.
Operating Environment
Operating conditions include various factors that include temperature, harsh chemicals, exposure to UV radiation, continuous contact with water, and even subjection to flames. However, in outdoor applications, it is best to select materials such as stainless steel that can withstand large moisture concentrations and rusting while maintaining their physical appearance and structure.
Electrical Conductivity
For parts for electrical applications, the selection of material will depend on the electrical properties required of the part. Therefore, it is crucial to consider the electrical conductivity of the chosen material.
Material Costs
Vigilant consideration must be given to the functionality, strength, hardness, chemical tolerance, electrical properties, and other properties to determine that such a material is a viable low-cost alternative to the best suitable material.
The key to procuring a fully optimized finished part starts with choosing the right material. The decision to choose the right material imposes almost every stage of the product life cycle, from prototyping to full production to the part’s performance in its end application. Therefore, material selection is considered a vital part that needs to be diligently taken into consideration before beginning CNC machining operations.