Time to read: 6 min
Large-scale CNC machining is a subdivision of CNC machining dedicated to the production of large-diameter products, renowned for its high precision and accuracy, and widely applied across various industrial sectors. This article delves into the key applications, design considerations, and essential steps in the large-scale CNC machining process.
Large-part CNC machining is a CNC machining process specifically for manufacturing large mechanical parts. Like regular CNC machining, it is a subtractive process where computer-controlled machine tools remove material from an exceedingly large workpiece. The uniqueness of large-diameter machining lies in its complex nature, requiring an understanding of the scenarios significantly impacting the process.
Many industries require CNC machining for parts used in their products, tools, or machinery. However, due to size constraints, a limited number of industries employ this process. Below are common industries that leverage this manufacturing technique.
The automotive industry uses small-scale CNC machining for prototyping vehicles but favors large-scale CNC machining for actual production, creating parts for engines, shafts, and other vehicle components.
The aviation industry relies on large-scale CNC machining for its precision and accuracy, offering on-demand replacement and upgraded parts for their machinery.
Efficient energy generation requires large-sized parts, which are best manufactured through large-scale CNC machining due to the unique properties it offers.
Mining equipment is robust and large to withstand the stresses of mining, making large-diameter machining the ideal process for creating components like gear racks, ranging arms, and gearboxes.
Large-scale CNC machining is crucial for drilling stations, manufacturing significant parts of equipment such as connecting rods, mud/fracking pumps, and gearboxes.
Large-scale CNC machining is not a straightforward manufacturing process due to differences in size, which introduces many considerations.
Producing high-quality large parts requires understanding conditions that can affect the design. Some conditions to note include:
Temperature is crucial in large-part machining as CNC processes generate heat, often due to friction. Changes in temperature can lead to workpiece dimension variations.
Working with large parts using large-scale CNC machining introduces high stress, potentially leading to workpiece distortion.
Machines used for large-part machining must have a larger work zone and greater reach.
These conditions are critical and must be well-understood before beginning the process. We discuss how to address them under the setup option below.
Preparing for large-part machining involves understanding the equipment required and creating a space that can accommodate large and heavy parts and machinery. You can prepare for the process by:
The increased size raises the likelihood of collisions during machining. It's essential to prepare by optimizing the CAD file to prevent collisions.
Working with larger parts means dealing with increased weight. It's crucial to prepare by using weight supports.
Incorporating a CNC router in preparation is ideal for working with large parts due to their large work envelopes.
While not core to the machining process, loading equipment is vital for handling large and heavy parts that are difficult to move manually.
Effective large-part machining requires proper setup and knowledge of necessary tools for the process. The focus is on the large parts targeted by the manufacturing process.
There are numerous setup adjustments for large-part machining, heavily dependent on part size. Some setup tricks for smoother operations include:
Allowing for larger parts without increasing temperature by opening the machine and incorporating cooling periods between operations.
Segment operations for easier handling and incorporating this into the design process.
For easier handling, use rigs for sliding rectangular parts and spinning circular parts to access different sides.
Tools for large-diameter machining differ slightly from standard CNC tools, requiring adaptation to large-scale machining. Essential tools include large turnings, mills, boring machines, and more. Other tools to enhance operations include:
Loading tools like forklifts, hoists, cranes, and rigging hardware are necessary depending on material size.
Shapers are used for creating flat surfaces, grooves, and angular surfaces with an oscillating cutting tool.
Planers perform similar operations to shapers but with the workpiece fed automatically into a stationary planer.
Grinders remove small metal parts by bringing the part into contact with a rotating, high-speed abrasive wheel, essential for large-scale machining.
Power saws are used for cutting shapes in metal parts, often for internal/external contours and angular cuts.
Other materials include welding materials, lubricants, thermal control systems, and testing and inspection tools.
Understanding the nuances of manufacturing large parts with CNC machining, such as size, workspace, design, preparation, and more, can be complex. However, choosing Unofactory eliminates these concerns as we cater to these requirements.
With a maximum build envelope of 2000mm x 1500mm x 300mm, we are well-equipped for your large-scale CNC machining needs.
Use our instant quotation for designs of any size and receive quotes within minutes. Additionally, we offer Design for Manufacturing analysis to ensure your design's feasibility.
Certified with ISO 9001:2015, we prioritize customer satisfaction and offer these benefits at a low cost, saving an average of 30%.
Most importantly, our qualified engineers with reputable knowledge are ready to answer your questions and provide suggestions.
While technical, large-part CNC machining becomes clearer after understanding the process and necessary steps for smooth operation. We hope this article has enlightened you about large-scale CNC machining and inspired trust in Unofactory for your projects.
What Tools Do I Need for Large-Part Machining?
The tools needed depend on the operations required, typically including turning machines, power saws, planers, shapers, drilling machines, etc.
What Is the Difference Between Small-Scale CNC Machining and Large-Scale CNC Machining?
The main differences lie in their steps and requirements, with small-scale CNC machining being less demanding and more straightforward.
Applications of Large-Part CNC Machining
Industries Utilizing Large-Scale CNC Machining
Considerations for Large-Part CNC Machining
Design
Preparation
Machining
Setup
Tools
Choose Unofactory as Your First Choice for Large-Scale CNC Machining
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