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Micromachining requires a high level of skill and expertise, not excepting CNC machining of large components that need specialized equipment large enough to process large-scale productions. However, large CNC machining may not be a straightforward process. There are lots of things to consider in order to optimize the whole manufacturing process and get the best results. In this article, we’ll have an overview of large CNC machining, also referred to as large diameter machining or heavy duty machining, and you’ll know its definition, application, and considerations better.
What Is Large Part CNC Machining?
Large part CNC (computer numerical control) machining is a manufacturing process that involves using computer-controlled equipment to cut, shape, or form large pieces of materials into precise and complex shapes. This process is typically used to produce large metal parts and components that are too large or too complex to be manufactured using traditional machining techniques.
Scenarios for Large Part CNC Machining
Large-part CNC (computer numerical control) machining is a manufacturing process that involves using computer-controlled equipment to cut, shape, or form large pieces of materials into precise and complex conditions. This process is typically used to produce that significant metal component that is too large or too complex to be manufactured using traditional machining techniques.
Applications of Large CNC Machining
Many industries require CNC machining in making parts used in their products, tools, or machines. However, due to size, there is a limited number of industries using the process. Below are common industries that use the manufacturing process.
Automotive
The automotive industry uses small-scale CNC machining for making their prototype vehicles. However, in real-time production, they favor large CNC machining in making parts used in their engine, shaft and other vehicle components.
Aviation
The aviation industry relies on large CNC machining because of high precision and accuracy. It is a better method because it offers on-demand replacement and upgraded parts of their machines.
Mining
Equipment used in mining is strong and large. This is because of the stress associated with mining. Therefore, large diameter machining is the right process for making parts such as gear racks, ranging arms and gearboxes.
Oil and Gas
Large CNC machining is crucial in drilling stations to make the large part of their equipment. Examples of such parts are the connecting rods, mud/fracking pumps, and gearboxes.
Considerations for Large Part CNC Machining
There are several factors that should be considered when planning a large part CNC machining project:
Conditions：
The conditions in the initial stage of CNC machining process are crucial factors in making high-quality large parts, some of which are listed below:
Work Area
CNC machinery used for large parts machining needs a larger work zone and higher reach that allows for efficient machining of these parts.
Temperature
The temperature should be taken into consideration during CNC machining large parts processes. In general, this process will generate heat. A typical case is the heat from friction. A temperature change will cause a change in workpiece dimensions.
Stress
There is a high probability of incurring stress in the large CNC machining process. The stress may lead to workpiece distortion in the manufacturing process.
Preparation :
The preparation of large part machining is concerned with the pieces of equipment required, and the space for placing heavy and large equipment and parts. You can prepare for this process by the following:
Weight supports
A larger part comes with a large weight. It’s also a significant factor to note and weight supports are recommended use.
Collision elimination
The probability of collision grows with an increase in part size when machining large diameter parts. Optimization of the CAD file is a practical manner to solve this problem. The first step is to check the relationship between the enclosure’s interior and the design.
Using CNC Routers
You’re supposed to incorporate a CNC router to process large parts. A CNC router with big work envelopes is suitable for this process.
Preparing Loading Equipment
Loading equipment may be not a necessary tool required for the large part machining process, but it can well fit in situations where the heavy part is difficult to carry.
Machining Process
After talking about the factors note to consider at the beginning of machining, it’s time to discuss other important things during the large part manufacturing process.
Material
The material being machined will have a big impact on the machining process. Some materials are easier to machine than others, and the choice of material will also affect the type of tooling and cutting techniques that can be used.
Size and complexity of the part
Large parts can present challenges in terms of handling and machining due to their size and weight. It is important to carefully plan the machining process to ensure that the part can be moved and held in place accurately during the machining process.
Tolerances
The required tolerances of the finished part will also have an impact on the machining process. Tight tolerances will require more precise machining techniques and may also require additional processing steps such as heat treatment or grinding.
Surface finish
The required surface finish of the part will also need to be considered. Some machining processes are better suited to producing high-quality surface finishes than others.
Tooling and equipment
The choice of tooling and equipment will be determined by the material, size, and complexity of the part, as well as the required tolerances and surface finish. It is important to carefully select the right tooling and equipment to ensure that the machining process is efficient and produces high-quality parts. Common tools available to enhance the operation further include planers, shapers, power saws, grinding machines, layout, and moving equipment.
Cost
The cost of the machining process will depend on a variety of factors including the size and complexity of the part, the material being machined, the required tolerances and surface finish, and the tooling and equipment needed. It is important to carefully plan the machining process to minimize costs and ensure that the project is completed within budget.
Choose NOBLE for Your Large CNC Manufacturing Project
Component manufacturing is demanding, from precision and pressure to tooling and tolerances. All of these challenges are magnified when parts are heavy and oversized. This is a daunting task for some shops that are just moving materials. But at NOBLE we pride ourselves on our efficiency and ability to manufacture heavy-duty components to meet customer requirements and needs. This means we have the confidence and ability to tackle projects that might be too complex or difficult for other machine shops. Get your CNC Machining Large Parts Quote Today!
