Safety Operating Procedures For Milling Machine Work Positions

Safety operating procedures for milling machine work positions

Have you ever witnessed a workpiece flying out of a milling machine, or an operator's sleeve being caught in the spindle? These tragic incidents often occur in just a second or two, but the root cause is that safety procedures are ignored. The Xiangcheng District Emergency Management Bureau recently produced a batch of safe operation videos for industrial and trade companies. Among them, the specifications for milling machine operations are particularly worthy of every operator and manager to follow and implement.

Job hazards are more hidden than you think

There are sharp edges, sharp corners and protruding parts on the milling machine. They may not seem inconspicuous, but they can easily scratch the operator's arm when he turns around or adjusts the workpiece. What's even more frightening is that if the workpiece or tool is not clamped, it may fly out directly under high-speed rotation and hit the operator or other colleagues. The Xiangcheng District Emergency Management Bureau specifically emphasized in the video that this type of mechanical injuries accounted for more than 30% of accidents in industrial and trade enterprises.

In addition, the high-speed rotating spindle, chuck and grinding wheel themselves are huge energy carriers. Once loose clothes or gloves are trapped, there is no way for human limbs to get rid of them; if machine tool lighting uses ordinary voltage instead of safe voltage, and the power cord is damaged and leaks, electric shock accidents may occur at any time. These risk factors often appear at the same time, and as long as one of them loses control, it will trigger a series of reactions.

Do not be careless when wearing labor protection equipment

Many old workers feel that wearing goggles will cause obstacles and wearing anti-smash shoes is too heavy, but they don’t know that it only takes a fraction of a second for flying iron filings to hit their eyes. The teaching video of Xiangcheng District clearly stipulates that personnel working on milling machines must wear goggles, protective earplugs and anti-smash safety shoes. Goggles can block the debris flying out at high speed, earplugs can reduce the noise damage caused by long-term milling, and safety shoes can prevent falling workpieces from injuring your toes.

At the same time, the video repeatedly warns about CNC milling safety regulations and strictly prohibits wearing loose clothing and gloves for operation. Loose cuffs or hems can easily be caught by the rotating cutter. However, even if the gloves are very thin, they may be bitten by the milling cutter and pull the entire hand toward the cutting area. In 2025, an accident occurred in a machinery factory in Suzhou. The accident was caused by wearing gloves to operate a milling machine, which eventually resulted in the finger being cut off. The lesson was extremely painful.

Pre-operation inspection is the last line of defense to save your life

Before starting the machine, be sure to check the protective baffle at the end of the ram to see if the safety interlock device is effective, and also pay attention to whether there is any problem with the emergency brake button. Failure of these protective devices would leave the equipment unprotected. In addition, it is necessary to check whether the anti-loose devices of fixtures, fixtures and tools are in good condition, because any looseness in any place is likely to cause the workpiece to fly out during the processing.

Shake the handwheel of each axis to check whether the operation is stable, confirm that the transmission system is normal and the operating system is normal. Don’t forget to check the safety handover record of the previous shift , CNC milling safety regulations , and equipment maintenance records to see if there are any remaining abnormalities in the equipment. Finally, check whether the brightness of the working environment is sufficient, whether the space is crowded, and whether the power cord is damaged. Videos from Xiangcheng District show that these preparations only take three to five minutes, but can avoid more than 90% of accidents.

Not a single standard action in the homework should be missing.

After turning on the power and air source, first let the cooling water pump run dry to test the machine. Only after confirming that everything is normal can you start the operation. When clamping workpieces and tools, the wrench must comply with the standard specifications. After clamping, a test pull is required to confirm that there will be no looseness. After adjusting the height of the milling head and completing the CNC system settings, start the spindle to start milling according to the parameters.

During the processing process, the operator must always pay attention to the status of the milling, adjust the height of the milling head in time, and maintain the stability of the equipment. For the operations of lifting and lowering the workpiece, tightening the tool, adjusting the speed, and measuring the workpiece, all operations must be stopped before the equipment is running. When two people work together, they need to shout commands to make the actions consistent. It is strictly forbidden to stack tools or measuring tools on the workbench. The head and hands must not be close to the milling surface. If you want to remove the workpiece, you must first remove the tool. As long as any safety device fails, the equipment must be stopped and professional personnel can be hired to repair it before the operation can continue. It is absolutely forbidden to reach out and touch the rotating cutting tools, and it is also forbidden to use cotton gauze to wipe the rotating cutting tools and transmission parts. Once an abnormality occurs in the equipment, technicians must be called in to deal with it immediately.

Job finishing and emergency response determine whether you can go to work safely tomorrow

After the production and processing is completed, the spindle needs to be shut down in sequence, then the power is turned off, the air source is turned off, and the cooling water pump is turned off. When cleaning iron filings and debris, it is best to use a special iron hook or brush. Do not grab it directly with your hands. The handles of each part must be placed in the empty space according to CNC milling safety regulations to avoid accidental startup the next time the machine is turned on. After stopping operation and cutting off the power supply, maintenance work must be carried out conscientiously and in detail, and relevant maintenance records must be filled in truthfully and thoroughly to provide corresponding reference for the next shift.

If a fire hazard occurs in the working area, immediately stop the machine and cut off the power supply, use fire extinguishers placed nearby to put out the fire and report to the supervisor. Once a person's limbs are cut or their eyes are hit by flying objects, immediately press the emergency stop button, call 120 for emergency services, and inform the supervisor at the same time. The Xiangcheng District Emergency Management Bureau demonstrated the correct first aid methods in the video, emphasizing that seriously injured patients should not be moved until professional medical staff arrive.

Use video teaching to improve safety skills of all employees

Based on the distinctive characteristics of different positions in industrial and trade enterprises, the Xiangcheng District Emergency Management Bureau has produced teaching videos with on-site practical operations as the background. This type of video turns boring procedures into very intuitive practical demonstrations of actions, helping employees truly understand the reasons for doing what they do. Companies can include the video in the onboarding training for new employees and annual repeated training, and play it for about two or three minutes in pre-shift meetings to continuously strengthen relevant safety awareness.

Since 2025, there are more than 200 industrial and trade companies in Xiangcheng District, which have adopted this set of video teaching programs for safe operating procedures for milling machine operations, and workplace safety accidents have been reduced by 40% year-on-year. Managers can organize employees to check on their own one by one according to the video, and make rectifications immediately once problems are discovered. Employees can also observe and remind each other, thereby creating a good atmosphere in which everyone pays attention to safety and knows how to operate. Safety is not a slogan hanging on the wall, but a habit that exists in every action.

When operating a milling machine, have you ever encountered a situation where the protective device failed or a colleague operated contrary to regulations? Feel free to share your experiences and responses in the comment area so that more people can benefit from your experience. If you find this article helpful, please like it and forward it to the workers around you, so as to stick to the bottom line of safety together.