Why Choose CNC Machining Over Manual Processes?
In modern manufacturing, there are two main processes for producing components: manual machining and CNC machining. In this blog post, we’re going to dig into what manual machining is, what CNC machining is and why choose CNC machining over manual processes?
Stick with us to learn more or, to speak to an expert, call us now on 01527 352306.
Manual Processes Explained
Manual processes are the more traditional methods of manufacturing. This includes tools such as drills, lathes and saws, all controlled by a skilled operator to produce carefully crafted results.
How It Works
In manual manufacturing processes, the operator moves a piece of material between tools depending on the intended outcome. They work to a pre-set design, with the ability to adapt as they go.
Manual Machine Tools
Manual machine tools are pieces of manufacturing equipment that require skilled operators. These include:
Manual centre lathes
Manual milling machines
Drill presses
Surface grinders
Manual bandsaws
CNC Machining Explained
CNC stands for computer numerical control. CNC machining uses pre-programmed computer operation to control tools and form components. A design is created using CAD software and programmed into the machine, which then creates the component autonomously.
It involves many of the same end processes as manual machining, such as drilling and milling, only controlled by a computer rather than a human operator.
There are a few key differences between CNC machining and manual machining, which we’ll dig into below.
Differences Between Manual Processes and CNC Machining
Control Over the Process
With manual processes, the operator has continuous control over the working of the piece, and can adapt what they’re doing at any given moment. With CNC machining, the process is pre-programmed and cannot be adjusted on the fly. However, the use of software does allow for a great deal of control over tiny details.
Workflow and Production Methods
Another key difference is how each process is carried out. In the case of manual machining, a design is created either on paper or using CAD software and a skilled operator then creates the component using a series of machines.
With CNC machining, a component design is created using CAD software and then programmed into an appropriate CNC machine. The machine is fitted with the required tooling bit and then carries out the process autonomously, turning a solid piece of material into the finished component.
Automation
In manual machining, the entire process is carried out by an operator, with little to no automation involved. This gives greater flexibility but requires more time. CNC machining, however, is almost entirely automated. After the design is created in CAD software, the tooling is set and the workpiece is loaded, the CNC machine will handle the rest.
Reasons to Choose CNC Machining Over Manual Processes
So, why choose CNC machining over manual processes?
Increased Precision and Accuracy
CNC machining is computer-controlled. As a result, it’s incredibly precise and accurate, able to deliver products to tight tolerances in very short spaces of time. This is ideal for high-precision environments.
Consistency and Repeatability
Because CNC machining is computer-controlled, it’s very consistent and can reliably repeat results over and over. This makes it perfect for producing large batches of the same item.
Quicker Production
CNC machines are designed to be able to make cuts as quickly and precisely as possible. They can produce batches of finished components far quicker than manual machining can, reducing product turnaround times.
Reduces Human Error
Even the most skilled machine operators make mistakes. CNC machines significantly reduce the risk of manufacturing errors. This reliability helps drastically minimise material waste and shortens production times.
More Complex Geometries
CNC machines can produce incredibly complex components with ease and with no errors. The same pieces would take a human operator much longer to complete.
Increased Scalability in Production Runs
Thanks to highly repeatable processes and greater speed, CNC machining makes large production runs fast and easy while minimising material waste. It’s perfect for producing large numbers of the same components.
Less Material Waste
CNC machines work to minimise material waste by nesting components as closely together as possible within the original material. They also make few to no errors, minimising waste even further. This makes them more environmentally friendly and more cost-effective.
Improved Workplace Safety
Manual manufacturing processes involve a degree of risk. Hand-operated tools can break, slip or malfunction, potentially harming the operator. CNC machines don’t require operator supervision and the tooling is entirely encased, protecting staff from potential hazards and creating a safer work environment.
Which Industries Can Benefit
A huge list of industries can benefit from CNC machining, saving time, money and effort while improving the quality of finished products. These industries include:
Aerospace
Automotive
Medical and healthcare
Electronics
Defence and military
Oil and gas
Industrial manufacturing
Construction
Furniture Manifacturing
Marine
Renewable energy
Telecommunications
Consumer products
In many cases, it can also be beneficial to outsource CNC machining. CNC equipment is costly and requires a good deal of space. Outsourcing gives you access to all the benefits of CNC machining without the large upfront cost and saves you the need to find space for the equipment.
Outsourcing CNC Machining with Cut to Size
At Cut to Size, we offer turnkey outsource CNC machining services. We have a large number of top-of-the-line CNC cutting, routing and turning machines, as well as an expert team of operators. Whether you need finished products or prototype components, we can help you design, cut, assemble and finish almost any item in a huge range of materials. Check out our previous work for inspiration.
To discuss your next project, call us now on 01527 352306, email us at info@cuttosize.co or fill out our contact form.
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