Types of CNC 3 Axis Milling Machines
A CNC (Computer Numerical Control) 3 Axis milling machine is an advanced tool used for cutting and shaping materials with great precision and automation. The main three types of CNC 3 Axis milling machines are as follows:
- CNC Bed Mills: A CNC bed mill is a machine tool with a horizontal cutting device mounted on a bed that performs various operations on materials to shape them into desired forms. One of the most significant differences in bed mills is axis control. In many of these machines, only three of the principal six axes are generally digitized or controlled. These include the three primary movement areas: the X-axis, which is lateral, and the Y-axis, which is vertical, and the Z-axis, which is depth. And although the concept of a bed is similar to that of a centroid in that there are also beds like boxes and computers, the bachelor's degree area areas are generally more advanced.
- CNC knee mills: The same principal areas of movement apply to CNC knee mills as to other 3 Axis CNC milling machines. However, the machine design and operations are different. On a CNC knee mill, the machine tool has a part known as the knee. This component moves vertically and horizontally to configure the work material. While the design is similar to that of a traditional milling machine in which the final processes are automated, the CNC machines usually have a computer-controlled design in which the commands are usually 3D.
- CNC engraving mills: As the name implies, the engraving means that this particular CNC milling device is used when only engravings are to be made on an area. The CNC engraving mill may or may not know how to perform other tasks, such as cutting or machining, depending on the level of the device.
Specification and maintenance of 3-axis CNC milling machines
Generally, the specifications of a 3-axis CNC milling machine may vary considerably based on the particular model and brand. The following are some of the typical specifications to focus on:
- Worktable Size: The size of the workpiece that one can use is determined by the size of the CNC milling machine worktable. For instance, a CNC machine with an 800900mm worktable means that it can accommodate a workpiece with a maximum size of 800mm in width and 900mm in length.
- Processing Range: Refers to the maximum machining size of the CNC milling machine. For example, a 3-axis CNC machine with a processing range of 600*600*200 means that it can process workpieces with a maximum size of 600mm in length, 600mm in width, and 200mm in height.
- Rotating Speed of Spindle: Indicates how fast the spindle can rotate when the CNC milling machine is running. For example, a spindle speed of 24000 rpm means that the spindle can rotate up to 24000 times per minute.
Regular maintenance is key to ensuring that the 3-axis CNC milling machine maintains optimal performance. Here are a few maintenance tips:
- Routine Dust Cleaning: Always use a dust blower to blow off the dust on the surface of the machine. Try not to use rags as they may leave traces on the polished parts. Use a soft brush to clean up the invisible areas like the slides and tracks.
- Lubrication for Guides and Rails: Wipe off the oil on the slides and rails with lint-free cloth. Then, apply some light oil or machine tool lubricant on them and then, rub it with a clean cloth to make sure an even layer of oil residue is left.
- Grease for Rack Gears: Apply some grease to the rack gears while making sure the excessive grease does not stick on the rack.
- Regularly Lubricate Ballscrews: Wipe off the dirt and debris on the ballscrews of the CNC milling machine using a clean lint-free cloth. Then, apply some machine tool grease to make sure smooth movement.
Scenarios
- Prototype development: CNC 3-axis milling machines are frequently used to create and develop prototypes for products before they go into full-scale production. A prototype is an essential stage in product development since it enables designers and engineers to quickly produce a working model of their idea, test its functionality, and identify any potential design faults. By utilizing CNC 3-axis milling machines, companies can efficiently produce prototypes for a wide range of products, allowing them to validate their ideas faster and initiate the market introduction process.
- Toolmaking and die manufacturing: CNC 3-axis milling machines play a crucial role in the creation of tools, fixtures, and dies. These items are essential for manufacturing processes, such as injections and stampings, aiding in the efficient production of final goods. The precision and adaptability of CNC 3-axis milling machines enable manufacturers to make customized tooling solutions that perfectly suit their manufacturing needs. Additionally, the automation provided by CNC technology boosts productivity while minimizing human error.
- Industrial part production: The manufacturing of parts and components for use in a variety of sectors, including automotive, aerospace, electronics, and medical equipment, heavily relies on CNC 3-axis milling machines. The precision machining capabilities of these machines enable the production of intricate and precise parts that correspond to sector requirements. Whether it be engine components, housings, brackets, or specialized medical devices, CNC 3-axis milling machines are capable of handling a range of materials and produce high-quality, durable parts.
- Small to medium-scale production: Small to medium-scale production refers to the manufacturing of a limited quantity of products rather than large-scale mass production. CNC 3-axis milling machines excel at this type of production since they can easily change between producing models without requiring extensive setup periods. In addition, the precision of 3-axis CNC milling ensures that products comply with tight tolerances, and their flexibility allows for the production of various products, ranging from mechanical components to decorative items.
How to Choose 3 Axis CNC Milling Machine
When choosing a CNC machine, one needs to carefully consider various factors such as the purpose or specific application for which it will be used, desired features, and the budget constraints ad therefore find an affordable 3 axis CNC milling machine price.
- Intended Use: The first and most important thing to consider when choosing the CNC milling machine is its intended use. One must identify the material he would be working on and the specific parts' complexity. Consider how large and intricate the piece are, is the material one will be dealing with metal, plastic, wood, or any other thing, and what type of finish would be required. An industrial-grade metal CNC 3 axis milling machine will differ significantly from a basic desktop CNC milling machine for wood, for instance.
- Machine Type: There are several types of CNC machines available, and to narrow down choices, one will have to decide on the type of machine that best suits one's needs and therefore, the productivity level. Consider whether a standalone CNC milling machine or a CNC machine center incorporating simultaneously Computeraided CNC tools and milling technology is preferred. A machine center would more likely have automatic tool change functionality, a rotatable workpiece holder comprising multiple axes, and enhanced degrees of automation.
- Work Envelope: The work envelope or workspace of the CNC machine is standardized according to the dimension of the parts it will be working on. Ensure that there is enough room for the workpiece to fit into the machine and that the over milled area will be readily accessible by the tools.
- Spindle Power: Like the milling machine operations which involve a diverse range of operations that must apply varying speeds and pressures, the spindle on a CNC machine must have sufficient torque to carry out its task. Consider whether the generally 3-7 kW spindle motor used for light-duty work is adequate for one's operational needs or if a more powerful 15-22 kW spindle motor would be necessary.
Cnc 3 axis milling machine price Q and A
Q1. What are the benefits of a 3 axis CNC machine?
A1. Simple operation is one of the key benefits of a 3-axis CNC milling machine. In most cases, this machine only uses a CNC controller, which does not require the operator to know more about the principle of the machine. Furthermore, the CNC 3-axis mill is price-friendly compared to some advanced CNC machines with more axis work. Therefore, businesses can invest money in simpler but effective 3-axis CNC machines and still get decent product outcomes.
Q2. What material can a 3-axis CNC milling machine process?
A2. Metal materials such as copper, aluminum, carbon steel, galvanized iron, stainless steel, and alloy steel. Plastic materials include ABS, PVC, PP, PC, POM, Nylon, and other engineering plastics. Wood materials include solid wood, plywood, MDF, etc. Marble, Acrylic, and Aluminum composite materials are also applicable.
Q3. How does a 3-axis CNC milling machine work?
A3. An operator can easily set up workpieces and tools by using fixtures such as vices and jigs on the 3-axis CNC milling machine. After that, the operator needs to program the control system. The workpiece will then be clamped to the machine's table, and the tool will start rotating. The tool moves along the three-axis to perform the desired cut. Once the first process is done, the CNC machine will automatically repeat the process until all parts are complete.
