Safety Technical Problems & Tips in CNC Turning - CNC Turning Operation Precautions

2019/11/11 16:58:28

CNC turning is the most basic and common cutting method, which is important for production. What is CNC Turning? It can be regarded as changing the shape and size of the material by using the rotation of the workpiece relative to the cutting tool and the linear or curvilinear motion of the cutter on the lathe, and cutter process the workpiece to create CNC turned parts meet the requirements of drawing. 

cnc turning safety.png

Due to the wide application of CNC turning service, the lathes, the number of people and the tools involved are numerous, so the safety technical problems of CNC turning to the machine are particularly important. What CNC turning safety problems you should pay attention to?

CNC Turning Operation Precautions & Safety Tips

Here are some main technical CNC turning safety problems and safety tips or precautions for them. 

1. CNC chip damage

The various steel parts processed on the lathe have good toughness, and the chips generated during the CNC turning process are plastically curled and the edges are sharp. When cutting CNC steel parts at high speed, red hot and long chips are formed, which makes the operator extremely easy to injure and often entangled on workpieces, turning tools and tool holders. On the other hand, improper chip breaking can result in poor surface finish. How to avoid it? In the work, you can use the iron hook to clean or break the chips in time. If necessary, stop it, but never remove it by hand or pull it off. In order to prevent chip damage, chip breaking, control chip flow direction measures and add various protective baffles are often used. The chip breaking measure including to grind the chip breaker or step on the turning tool; using a suitable chip breaker, apply a mechanical clamping tool, etc.

2. Installation and clamping of the workpiece

In the process of CNC turning, there are many accidents that damage the machine tool, break or crash the tool, and the workpiece falls or flies out due to improper clamping of the workpiece. Therefore, in order to ensure the safe production of turning parts, great attention must pay when clamping the workpiece. For the turned components of different sizes and shapes, the appropriate fixtures should be used. The connection of the three-jaw chuck, four-jaw chuck or special fixture and the spindle must be stable and reliable. The workpiece should be stuck and clamped in the right direction closely, and the large workpiece can be clamped with a sleeve to ensure that the workpiece does not fall off, not fall out and not displaced when rotating at a high speed and subjected to cutting force. If necessary, it can be reinforced with a top, a center frame, etc.  

3. Safe operation

Improper operation is also one of the major factors contributing to the accident. To ensure security, some CNC safety rules must be followed.

- Check the machine thoroughly before working and confirm that it is good.

- The mounting of the workpiece and the tool ensures that the position is correct, firm and reliable.

- When changing tools, loading and unloading workpieces, and measuring workpieces during machining, stop the turning machine.

- Do not touch or wipe with a cotton thread while the workpiece is rotating.

- To properly select the cutting speed, feed rate and depth, no overload processing is allowed.

- Do not place workpieces, work tools, and other debris on the machine tool and tool holder.

- When using the file, move the turning tool to a safe position with the right hand in front and the left hand in the back to prevent the sleeve from getting caught.

- The machine tool must have an individual professional person responsible for use and maintenance, and other personnel must not use it.


DAJIN provides excellent quality turning services, precision turned parts, offering professional machining services at competitive price and on timely delivery. With our extensive machining capabilities, we produce the most challenging precision machining parts covering all Industries especially in mass production in automotive industry.