CNC

Benefits of CNC

Results in Greater Accuracy
CNC machinery operates autonomously with little to no manual intervention, eliminating human errors in the manufacturing process. Advanced software and coding governs the machining process, delivering greater accuracy than is capable with human hands and actions. Plus, CNC machining relies on immutable digital inputs throughout each cycle in a continuous process for as long as necessary, meaning there are no compromises on quality. CNC machines do not get tired.

Results in Faster and More Efficient Production
CNC machining not only results in greater accuracy but its speed is unmatched by human efforts. These complex machines can run at high speed 24 hours a day if necessary, without tiring, breaks, or pauses for recalibration. Fast, accurate machining of parts means highly efficient production rates, which also contributes to quicker assembly processes. Even manual assembly lines are made more efficient by using CNC machining to produce parts that fit seamlessly together.

Produces Little Waste
CNC machinery software includes built-in coding that intuitively optimizes how a component is machined to reduce waste. Test models are run in simulation to determine optimal methods, so the final CAD-CAM model will produce exemplary results with near-zero wasted material from the first cycle. Moreover, CNC machining uses repeatable software, fixed tools, and fixed material routing to make the most efficient use of raw materials.

Enhances Personnel Safety
A significant benefit of CNC machining is how the complex production at high speed is completely isolated from human operators, enhancing their safety. Modern computer programming handles every adjustment, tool change, adding and removing raw material and finished products, and more without any necessary contact with a person. Operator involvement is limited to supervisory roles with remote monitoring and required maintenance during downtime.

Reduces Production Costs
Every energy-intensive manufacturing industry seeks ways to reduce energy consumption to reduce costs, gas emissions, and other environmental hazards. CNC machining is already an energy-efficient and labor-saving method of manufacturing that saves precious resources. Only the exact amount of effort is expended to complete precision milling operations, reducing energy use, raw materials, and other production costs. Plus, increased safety and efficiency reduces operational costs and financial liabilities from accidents and injuries.

Application of CNC

Woodworking Industries
Wooden furniture is often CNC machined to save time and reduce cost. Manually carving wooden parts is extremely time-consuming and costly. CNC machines can be used to create furniture with complex geometries that would have otherwise required a master woodworker to achieve.

Lettering and Engraving Systems
Some applications don't require the heavy-duty removal of material, but rather make use of an engraving tool to mark patterns or text onto the surface of a part. This application can be done for artistic applications or serialized parts.

Electrical Industry
Demand for CNC-machined parts for the electronics industry covers a wide spectrum of applications. Machining component mounting holes into printed circuit boards and machining aluminum or copper heat sink for heat-generating electrical components are some examples of the use of CNC machining in the electronics industry. Get started on a new Small Batch CNC Machining Quote.

Pharmaceutical Industry
CNC machines are used to manufacture precise equipment for use in the production of pharmaceutical products. Applications can include extremely precise metering pumps, ingredient-dispensing nozzles, and packaging. Get started on a new Production CNC Machining Quote.

Food and Beverage Industry
The fast-moving consumer goods industry makes use of a wide range of custom material-handling machinery that makes use of CNC machined parts. Food packaging is also made from injection molded plastics whose molds are CNC machined.

Components of CNC

How to Choose CNC

Process of CNC

Designing the CAD Model

A CAD (Computer Aided Design) 3D model is developed by an engineer or designer. This part is designed according to specific CNC design principles, which are included in the overall DFM (Design for Manufacturing) philosophy. DFM ensures that the part can be efficiently manufactured on a CNC machine. For CNC parts, it is not strictly necessary to create 2D drawings of the part, since the machine instructions are created using CAM software which generates machine instructions. However, 2D drawings are often generated to indicate key dimensions for quality control purposes.

Converting the CAD File to a CNC Program

The CAD file is exported to a CAM (Computer Aided Manufacturing) software package that contains a range of tools to convert the 3D model into a set of instructions that can be understood by the CNC machine. CAM software is normally used by CNC machine operators to generate G-code. At the end of the process, a G-code file is saved to the machine. This file contains all the relevant instructions required to manufacture the part.

Preparing the CNC Machine

Preparing the machine to fabricate a new part number starts with setting up the required fixturing to hold the raw stock material in place while the cutting tool removes material. Alternatively, the raw stock is fixed in a spindle and stationary cutting tools are presented to the rotating stock piece to remove material. The required tooling must be checked for wear or chips and placed into the machine. More advanced CNC machines have automatic tool changers and tool libraries that allow the machine to automatically select the relevant tool needed to machine a specific feature without having to wait for the operator to swap out tools.

Executing the Machining Operation

When the material is securely clamped into the machine, the correct tooling is selected and the G-code is loaded, the actual machining can commence. Once the cycle-start button is pressed the machine will select the appropriate tool, move to the workpiece and begin removing material as per the G-code instructions and will continue until the part is complete. For operations that require machining with more than one type of tool, or with the part in more than one orientation, some CNC machines may require the operator to reposition the in-process work material between operations.

How to Maintain CNC

Daily Maintenance
Cleanliness is Crucial Maintaining a clean CNC machine is paramount. Dust, chips, and debris can lead to performance issues and wear on critical components.Start each day by blowing away chips and dust with compressed air.Wipe down surfaces with a clean, lint-free cloth.Ensure that coolant and lubrication systems are clean and free from contamination.Inspect Toolholders and Workholding Devices Check toolholders, collets, and workholding devices daily for signs of damage or wear. Replace any components that appear compromised to maintain precise tool alignment.

Weekly Maintenance
Examine Way Covers and Bellows Way covers and bellows protect critical machine components from contaminants. Inspect them weekly for damage or leaks and replace any compromised parts to prevent issues.Spindle and Taper Maintenance Clean the spindle and taper thoroughly, removing debris or buildup. Inspect for wear and have them professionally serviced or replaced if necessary.Check Electrical Connections Regularly inspect all electrical connections, wires, cables, and connectors for wear or loose connections. Reliable electrical connections are crucial for CNC machine performance and safety.

Monthly Maintenance
Vibration Assessment Look for any unusual vibrations or noises. Vibration can indicate issues with bearings, belts, or other moving parts. Address problems promptly to prevent further damage.Tool Change Mechanism Ensure that the automatic tool change mechanism operates smoothly. Clean and lubricate it as per the manufacturer's recommendations to ensure it functions correctly.Axis Alignment Verification Confirm the alignment of the machine's axes by performing a precision calibration check. Correct any misalignment promptly to maintain the machine's accuracy.

Quarterly Maintenance
Ball Screws and Linear Guides Inspection Inspect ball screws and linear guides for signs of wear, damage, or contamination. Clean and lubricate them according to the manufacturer's guidelines. Replace worn components to prevent costly repairs later on.Coolant System Check Perform a thorough inspection of the coolant system, including pumps, filters, and hoses. Replace any worn or damaged parts and clean filters to ensure efficient cooling and chip evacuation.Controller and Software Updates Check for available controller or software updates provided by the manufacturer. Keeping your CNC machine's software up to date can enhance performance and security.

Future of CNC Technology