CNC machining is one of the machining methods in the mechanical field because this method offers the advantage of accuracy and speed. However, this is still a new method and many people still do not understand this method. So follow the article below of P69 Mechanical Factory to answer all your questions!
What is CNC Machining?
– CNC stands for Computerized Numerical Control. CNC machining is a computerized manufacturing process in which pre-programmed computer software dictates the movement of tools and machines in a factory.
This process can be used to control a wide range of complex machines, from grinders and lathes to CNC mills and routers. With CNC machining, three-dimensional cutting tasks can be performed in a single set of prompts.
CNC machining is the control of a series of complex machines, such as grinders, lathes, and lathes, all of which are used to cut, shape, and create various parts and prototypes. Today, CNC machinists combine elements of mechanical design, engineering drawing, math, and computer programming skills to produce a wide variety of metal and plastic parts.
Features of CNC machining
Here are the features that P69 Mechanical Factory wants to share with you, let’s take a look!
1. Automation is always high
– CNC machines can always automatically perform all the different operations after starting up. It can always automatically change the tool, and correct all the errors of the props; Check all detailed dimensions. Thereby, it will always automatically correct the relative position deviation between the tool and the same parts. Automated cooling operations, together sucking workpieces out of cutting areas within all cutting processes…
2. Flexibility in machining
– CNC machines are always used in the CNC Machining industry and can process all the extremely small details; single and possible all in rapid mass production. The most important thing is that always programming the machining can be done on all machines through computer devices; at the same time programs will always be able to program differently.
– The ability to always focus the work: Most all CNC machines can always perform a large number of tasks; all operations are always different; there will be no need for changing the rack position of all those details.
3. CNC mechanical processing is always accurate
– CNC machines always have a closed control system capable of processing all the details accurately; Even in shape and size. Helps reduce all damage caused by human error. CNC technology is also the only technology that can be precisely machined; such as parts that have a lot of extremely complex shapes such as 3-dimensional surfaces.
– Accuracy and same productivity always depend on all skill levels of all operators: All processes for CNC machining are always subject to human intervention. So the tolerance and the same machining speed always depend very much on the qualifications; including the programming experience of the operators.
>>>Invite you to see more: What is mechanical material? Properties and classification of current mechanical materials
Types of popular CNC machining machines today
Let’s take a look at the popular processing machines today!
– The CNC Router machine is one of the most common types of CNC machines used in the woodworking, plastic, composites or soft metal industries such as aluminum. The ability of a CNC Router machine when machining parts with hard materials such as steel or alloys and requiring high accuracy will be inferior to CNC milling machines. Typically, CNC routers are table mounted and tend to have large workspaces. However, a number of desktop-sized CNC Router machines are now available in the market, bringing this powerful tool into small and medium-sized workshops.
– Routers usually have a spindle that moves along the XYZ axis. The router’s Y-axis moves relative to the table, its X-axis moves relative to the Y-axis, and its Z-axis moves relative to the X-axis. CNC routers are mostly designed for cutting flatter material, usually comes with a vacuum foot and is often connected to a dust extraction system. They operate at high speeds, around 18,000 rpm or higher.
2. Milling machine (Milling)
– The CNC milling machine performs the same basic function as a typical CNC Router machine. However, there are some differences to mention. Firstly, CNC Router machines are mainly used to cut through softer materials, milling machines are often used to cut hard metals. Although CNC milling machines also use similar cutting tools, their speeds are much slower, around 6000 rpm or less.
– The milling machine table usually moves along the XY axis. As a result, this limits the working size. The main shaft of the machine moves linearly up and down the part. This also allows the mill to cut through thicker materials, and makes them suitable for cutting irregular pieces and variegated shapes.
– Both router and milling machine have a similar operating principle that the cutting tool will rotate and the part will stay stationary on the machine table. The lathe works on the opposite principle: the lathe rotates the workpiece relative to the fixed cutting tool. As such, lathes are used to produce symmetrical, spherical or domed cylindrical pieces. During machining, the part is fixed into position and rotated, while the cutting tool only controls the depth of the cut. Parts made with a lathe are therefore usually symmetrical.
– The lathes are configured horizontally and vertically. These machines perform roughly the same function: a vertical lathe is essentially an upgraded version of a horizontal lathe. Vertical lathes are suitable for heavier, larger and more awkwardly shaped parts. However, it is easier to free the three buckets with a horizontal lathe. Horizontal lathes are also more suitable for long drilling jobs because they are generally stiffer and vibrate less.
4. Plasma Cutter
– CNC plasma cutters work by cutting through conductive materials using a hot plasma jet. The plasma used is generated by the machine from compressed air, usually consisting of oxygen and other substances. As the plasma beam cuts through the material, it forms an electrical circuit back to the cutter. The electricity conducted through this plasma generates the heat needed to melt through the workpiece.
– When compared to traditional metal cutting tools, plasma cutters provide cleaner cuts and finishes. Plasma cutters are perfect for cutting through sheet metal, sheet metal, bolts and tubes, among many other metal objects.
5. Laser cutting machine
– The working principle of laser cutting machine is similar to plasma cutting machine, CNC laser cutting machine works by focusing laser beam on workpiece. This laser then melts, ignites, or vaporizes the material. Unlike plasma cutters, which are commonly used to cut through metal, laser cutters are used with a wide range of materials, including wood and plastic. For example, you can even engrave wood textures with a laser cutter.
– CNC laser cutters are more precise and use less energy than plasma cutters when cutting through steel or aluminum sheets. However, while plasma cutters are capable of cutting through materials of various thicknesses, laser cutters are not suitable for cutting through thicker metal sheets.
6. Water Cutter
– Similar to plasma cutters and laser cutters, waterjet cutting does not seem to be a commonly used solution for machining. However, waterjet cutting machine has an important place in heavy industry. It works by passing through the part with a high-pressure jet of water, which may or may not be mixed with an abrasive. Water-only machines are typically used to cut through softer materials, such as wood or rubber, while machines with abrasive mixes are capable of cutting through stone and steel.
– There are several advantages to choosing a water jet cutter over a plasma or laser cutter. Firstly, waterjet cutters are considered to be more environmentally friendly and generally use less water. Meanwhile, they are still capable of cutting through harder materials and do so with high precision in the range of 0.13mm. Waterjet cutters also avoid heat-related warping problems that can occur with laser or plasma cutters, helping to stabilize the part’s structure.
7. Spark Machining (EDM)
– Commonly known by many different names such as: spark machining, discharge machining (EDM) works by removing material from the workpiece using a series of electrical discharges (sparks). These discharges occur rapidly between two electrodes separated by a dielectric liquid and subjected to a voltage.
– There are two types of EDM machining. The first is to cut the EDM wire. In this process, a single metal wire, along with deionized water, cuts through the metal using the heat from an electrical spark. Wire EDM allows users to machine complex parts from hard, conductive materials.
– The second process is sink EDM. In this process, two metal parts are immersed in an insulating liquid, which is connected to a current source. When the current is on, there are two electrical tensions between the two metal parts. Bringing these parts together causes tension to release and a spark to jump between them. This spark causes the metal to heat up to the point where it melts.
– Machinists often use EDM with hard metals that can be difficult to machine with other techniques. Common applications of EDM are in the mold and die manufacturing industries. Increasingly, the aerospace, automotive, and electronics industries are also turning to EDM for low-volume prototype and production parts.
– While the other CNC machines listed here are mainly used for metalworking, the main application of the grinder is to produce a good surface finish. A wide range of CNC grinders exist on the market and each serves a distinct purpose.
– Surface grinder helps to create a smooth surface on flat surface by removing impurities and oxide layer. Whereas the cylindrical grinder works in the same way as the lathe, and improves the surface finish of the cylindrical surfaces. Knife sharpeners and cutters differ in that they help sharpen the milling cutter. To create the tool yourself, a mechanic can use a 5-axis grinder.
9. Multiaxis CNC machine
– The working principle of multi-axis CNC machines is similar to standard X, Y and Z 3-axis CNC machines, multi-axis machines have additional rotational axes such as A, B and C axes.
– Recently, CNC machines have moved beyond the traditional 3-axis and are now capable of multi-axis machining. This means that multi-axis CNC machines can perform rotary as well as translational motion at the same time. Multi-axis machines can operate with a minimum of 4 axes up to 6. This reduces the need for manual rotation during machining and allows for better surface finishes and more complex parts.
The role of CNC machining
– Currently, on the market, enterprises in all fields of mechanical engineering; all need to invest in equipment that will always be modern; equipped with all the “modern” machines in the manufacturing industry. In order to accelerate the work of increasing production, while reducing costs. At the same time will always ensure extremely competitive prices. Besides reducing manual labor; to reduce the time in doing the job.
– CNC Machining on all machined parts serving in many fields. It is always possible to mention for example the automotive industry, the military, or even the outsourcing of medical equipment; all items in human life such as kitchen utensils; or even interior decorations, and sanitary ware, etc.
Prestigious CNC mechanical processing address
Here, we own a team of designers, technicians, experienced workers. Well trained with high skill.
The system of equipment, machinery and technology is invested in the most modern and advanced. Guaranteed 100% product quality, genuine products guaranteed.
Customers can directly inspect the product before importing it. Refund if found counterfeit goods.
Various models, designs and product categories to meet the diverse needs of customers. Professional shipping and installation support.
The most competitive quote in the market.
So what are you waiting for, hurry up and contact us for a consultation
Contact information P69 Mechanical Factory
Address: Km 18, Thang Long Boulevard, Thach That Quoc Oai Industrial Park, Hanoi
Office: No. 06/165C, Xuan Thuy, Cau Giay, Hanoi
Phone: 09666 86 969
Hotline: 0989 188 982