Numerical control machining is very active in various fields, including aerospace, medical, automotive, intelligent equipment, daily necessities, and other industries. However, numerical control machining uses heavy equipment, and a slight lack of attention can lead to serious consequences. So what are the reasons for mechanical processing errors?

1. Human factors

(1) Lack of concentration: When the operator's attention is not focused, it may cause unnecessary mistakes, and in severe cases, it may damage the machine tool and endanger life safety.

(2) Misunderstanding: The operator's incomplete understanding of the processing frame can easily lead to processing errors.

(3) Beginner's error: Due to lack of experience, novice operators are prone to mechanical processing errors.

(4) Unexpected error: Mechanical processing errors caused by some abnormal situations, such as component failures in processing equipment, detachment during fixture processing, etc.

(5) Intentional error: The operator's intentional human error caused by certain personal reasons has a very negative impact.

2. Programming error

(1) The bottom of the coordinates is set to 0, but in actual processing, the top is set to 0.

(2) The safety height is too low, and the tool cannot fully lift the workpiece.

(3) The secondary opening has less clearance than the previous one.

(4) After completing the program, analyze and check the program path.

3. Program manifest remark error

(1) Write the number of contacts on one side as the center of the four sides.

(2) The display of the clamping distance of the caliper or the protrusion distance of the workpiece is incorrect.

(3) When the length annotation of the tool ejection is unclear or incorrect, it may cause contact.

(4) The program list should be as detailed as possible.

(5) When changing a single assembly, the new exchange principle of discarding old programs must be adopted.

4. Tool measurement error

(1) The input of tool data does not consider the tool holder.

(2) The tool installation is too short.

(3) Tool measurement adopts scientific methods and strives to use precise instruments.

(4) The length of the knife is 2-5mm longer than the actual depth.

5. Program transmission error

(1) The program number is called incorrectly or there is a change in the program, but it has been processed by the old program.

(2) The on-site contractor should check the detailed data of the program before processing.

During CNC Machining, due to human or machine tool reasons, tools or tool holders are prone to collide with workpieces or machine tools. Mild cases can cause collisions between tools or machined parts, while severe cases can damage machine tool parts, causing the machine tool to lose machining accuracy and even causing personal safety accidents. Therefore, familiarizing oneself with the causes of CNC machining errors before performing CNC machining can help reduce the occurrence of errors, reduce CNC machining accidents, and improve the safety rate of CNC machining.