Teach you six steps to play CNC machining CNC machine tools

Regardless of which line you are in, if you want to become a master, you must be able to withstand the experience of time, and you must continuously improve your work ability. In the CNC machining industry, if you want to become a CNC master (metal cutting), you must graduate from university and enter the factory. At least it will take more than 6 years. He needs to have the theoretical level of an engineer, as well as the practical experience and practical ability of a technician. Today, I will share with you: It is not difficult to learn CNC machining well. A master will teach you six steps to play CNC machine programming!

　　The first step: Must be an excellent craftsman. Without the support and trust of employees, it is impossible to become an excellent craftsman. Through such a long time of study and accumulation, you should meet the following technical standards and requirements:

　　 1. Familiar with the structure and process characteristics of drilling, milling, boring, grinding and planing machines,

　　2. Familiar with the properties of processed materials.

　　3, a solid basic knowledge of tool theory, master the conventional cutting parameters of the tool, etc.

　　4. Familiar with the company's process specifications, guidelines and general requirements that can be achieved by various process processing, and the process route of conventional parts. Reasonable material consumption and working hours quota, etc.

　　 5. Collect a certain amount of tool, machine tool, and mechanical standard data. Particularly familiar with the tool system used by CNC machine tools.

　　 6. Familiar with the selection and maintenance of coolant.

　　 7. Have a common sense understanding of related types of work. For example: casting, electrical processing, heat treatment, etc.

　　 8. Have a good fixture foundation.

　　 9. Understand the assembly requirements and use requirements of the processed parts.

　　 10. There is a good foundation of measurement technology.

　　 Step 2: Proficient in the application of CNC programming and computer software. In practice, the criteria for a good procedure are:

　　 1. Easy to understand and organized, everyone can understand.

　　2. The fewer instructions in a block, the better. It is simple, practical and reliable. From the perspective of programming, I think that the commands are G00 and G01, and the others are auxiliary commands, which are convenient for programming.

　　 3. Convenient adjustment. When the machining accuracy of the parts needs to be fine-tuned, there is no need to change the program. For example, if the tool is worn out, to adjust, just change the length and radius in the tool offset table.

　　 4. Convenient operation. The programming should be compiled according to the operating characteristics of the machine tool, which is conducive to observation, inspection, measurement and safety. For example, the same kind of part, the same processing content, in vertical processing, and horizontal processing, processing separately, the procedure is definitely different.

　　 Step 3: Be able to operate CNC machine tools proficiently. This requires 1-2 years of study, and the operation is very handy. Beginners, especially college students, know how to do it in their hearts, but they just don’t listen. In this process, you must learn: system operation mode, fixture installation, part reference alignment, tool setting, zero offset setting, tool length compensation, radius compensation, tool and tool holder loading and unloading, tool edge Grinding, measurement of parts (proficient in the use of vernier calipers, micrometer cards, dial indicators, dial indicators, inner diameter lever indicators), etc. What can best reflect the level of operation is: horizontal processing and large gantry (moving beam, top beam) processing. The practice of operation requires savvy! Sometimes there is an artistic conception of "a leisurely mind, but it is difficult to talk to the master"! In the CNC workshop, you can calm down and practice! Generally speaking, from the processing of the first part to the processing accuracy The qualification process requires the CNC programming technician to complete it personally. You can't operate the machine tool proficiently, you can't pass this level.

　　 Fourth step: Must have a good tooling and fixture foundation and measurement technology level. The difficulty in analyzing the cause of the fixture is that it can only be qualitative but difficult to quantify. If there is no experience in fixture design and part clamping, the difficulty will be great. For learning in this area, it is recommended to consult the technicians who do precision jig boring machines. One of the basic skills of machining to accurately measure the level, one must be able to use vernier calipers, micrometers, dial indicators, dial indicators, inner diameter lever meters, calipers, etc. proficiently. Sometimes parts processing, three-coordinate measuring machine is not expected.

　　 Step 5: Familiarize yourself with CNC machine tools. Proficient in the maintenance of CNC machine tools. The so-called familiarity with CNC machine tools should:

　　 1. Familiar with CNC electrical components and control principles. Can tell the name and function of each component in the electrical box, and understand the electrical schematic diagram. The alarm content can be found based on the electrical alarm number.

　　2. Understand the structure and transmission principle of the ball screw. Know which factors have a greater impact on the accuracy of machine tools.

　　 3. Understand the structure of the bearings at both ends of the machine tool screw rod and its influence on the accuracy of the machine tool.

　　4. Understand the lubrication system of the machine tool (bearings, main shaft, motion pairs, gearbox, etc.), and know the distribution of the lubrication points. The brand of machine oil and the normal consumption of oil every week or month.

　　 5. Understand the cooling system of the machine tool: cutting (water, air) cooling, spindle cooling, electric box cooling, etc.

　　6. Understand the main drive structure of the machine tool, and the specific data characteristics between the speed and torque of each machine tool.

　　7. Understand the characteristics of the machine tool guide rail pair: is it a linear rail or a sliding rail, how rigid (carrying capacity) is?

　　 8. Common operation faults can be eliminated (such as: exceeding limit, tool magazine tool number error, etc.)

　　 9. Proficient in various precision (static and dynamic) indexes and detection methods of machine tools. 10. Familiar with the tool magazine mechanism and the principle of tool change.

　　 The above several items do not have more than 3 years of exercise, I am afraid it is difficult to meet the requirements. And many companies do not yet have the conditions to learn. It is recommended to consult the master of the equipment cnc processing and maintenance department.

　　 Step 6: Develop good habits and adapt to the characteristics of CNC machining.