How to operate CNC milling machine for beginners

CNC machines are increasingly being widely used. Operating a CNC milling machine can be challenging for beginners. To become proficient in operating it, it is important to have a clear understanding of the instructions. This will help ensure work efficiency and minimize errors during machining. In this article, we will explore the process of operating a CNC milling machine for beginners.

What is a CNC milling machine?

CNC (Computer Numerical Control) is a system commonly used in mechanical engineering to manufacture products with complex shapes. These products are designed in 3D and set up on a computer. The CNC machine operator will input the initial workpiece into the machine and create products with specified sizes and patterns.

According to statistics, there are many ways to operate a CNC machine, as it depends on the user and the type of machine. Therefore, CNC machine operators need to be familiar with certain aspects before starting the operation.

1. Understanding the operating principles of a CNC milling machine

Typically, a CNC machine consists of: a worktable to hold the workpiece, a high-speed rotating spindle with a cutting tool such as a drill bit for cutting the workpiece. The spindle moves up and down along the Z-axis. The machine’s worktable, which holds the workpiece, moves along the X and Y axes in conjunction with the Z-axis to bring the cutting tool to all surfaces of the workpiece.

2. Key principles to grasp when operating a CNC machine

During operation, the operator needs to accurately determine the directions of movement for the axes:

• Understand the right-hand and left-hand rules for the X, Y, and Z axes.
• Familiarize yourself with the control buttons and commands of the machine.
• Understand the auxiliary devices connected to the machine.
• Have a clear understanding of the types of cutting tools used for different workpieces.
• Understand the parameters and command codes.
• Recognize errors that may occur during the machining process and know how to troubleshoot them.

3. Operations when operating a CNC machine

A CNC machine cannot function autonomously to produce a product; it requires the use of simulation software and a CNC control panel on a computer, such as SSCNC. Therefore, the operator needs to practice using the control panel and the various command keys on the CNC machine.

Consider the workpiece origin, workholding, and tool declaration for the CNC Router machine.

Declare the tool height based on the absolute coordinate axis.

Set the CNC machining standard according to the Z-axis of the relative coordinate system.

Declare the X, Y, Z machining standards for the workpiece on the CNC Router machine.

Lastly, write the program, delete and load the CNC program from the computer.

The CNC milling process

The CNC milling process consists of the following five basic steps:

Step 1: Design CAD model on the computer

Use CAD software to create simulated files of the product’s shape to be manufactured on the computer.

Step 2: Convert CAD files into CNC milling program

Specialists will convert the CAD files into command codes and install them into the computer.

Step 3: Prepare the CNC milling machine

Check the dimensions and place the workpiece on the CNC milling machine.
Mount the cutting tools into the tool holder.
Adjust the machine parameters to zero.
Load the established CNC milling program into the machine.

Step 4: Perform CNC milling operation

The CNC milling machine operates automatically on the workpiece under the control of the programmed CNC instructions set in the previous steps.

Step 5: Monitor the CNC milling operation

During operation, it is important to monitor the milling process to ensure that the machine operates according to the programmed instructions. It is advised not to manually interfere with the machine while it is running to minimize the risk of accidents.

In summary, to ensure efficiency in the milling process, as well as to produce high-quality products, the operator needs to be proficient and knowledgeable about the CNC milling machine. Additionally, seeking advice from experienced users or suppliers can provide a better understanding of the milling process and effective machine operation.

HA NOI MOULD TECHNOLOGY Co., Ltd.

Hanoi Mould Tech – Fast and Precise

Hotline: +84-911323590

Website: www.hanoimould.com

https://bit.ly/35zabER

Location: Lai Xa Industrial Zone, Kim Chung, Hoai Duc, Hanoi