2. Specialized courses: engineering mechanics, electrotechnics, mechanical manufacturing technology, CNC machining technology, CNC programming, electrical control and PLC, electrician technology, electronic technology, mechanical drawing, computer drawing (cad), computer foundation, programmable controller, mechanical manufacturing technology and fixture, CNC machine tools, CNC machine tool failures and maintenance, typical CNC systems, etc.
There are digital circuits, analog circuits, the principle and interface of single chip microcomputer and its application, C programming, VF, VB programming, computer network technology, numerical control system, numerical control processing technology, numerical control programming, automatic control theory, hydraulic transmission and pneumatic transmission.
3. Required certificates: computer level 2 certificate (C programming, VF, VB programming), mechanical engineer qualification certificate, mechanical English qualification certificate, English level 4-6 certificate, computer level 3 certificate, etc.
Question 2: What is the major of numerical control technology? Numerical control technology specialty
Core skills: Master the basic theoretical knowledge of CNC technology and modern manufacturing technology, skillfully operate CNC machining equipment, master CNC machining technology and programming, have the ability to maintain CNC machining equipment, skillfully use commonly used computer-aided design and manufacturing (CAD/CAM) software, and have the ability to use computer-aided mechanical product design and manufacturing. Students can apply for professional qualification certificates such as computer high-tech CAD, Pro/E draftsman and CNC machine tool operation.
Main courses: mechanical drawing, mechanical design foundation, mechanical manufacturing foundation, AutoCAD application, MasterCAM application, NC programming and machining, NC technology of machine tools, NC fault diagnosis and maintenance, NC machine tool programmable controller, cnc programming and operation training, NC turning and milling operation research comprehensive training, etc.
Career orientation: Engaged in mechanical processing, mold design and manufacturing, plastics, hardware, electronic products, computer production and other enterprises. Engaged in processing technology design, CNC machine tool operation and programming, CNC machine tool debugging and maintenance, mold product design and manufacturing.
Question 3: What occupation can the numerical control technology major engage in? In addition to operating several CNC machine tools, you can also engage in the installation, debugging and maintenance of CNC machine tools. Numerical control programming; Product design and development; Planning and compilation of processing technology; Product quality inspection and control.
Question 4: CNC technical qualification certificate Other: This major can obtain the intermediate vocational technical certificate of modular machine tool operators of the Ministry of Labor and the intermediate vocational technical certificate of CNC machining center operators of the Ministry of Labor. NC programmer: Master the knowledge of NC machining process and operation of NC machine tools, master the professional knowledge of complex mold design and manufacturing, and master 3D CAD/CAM software, such as UG and ProE. Proficient in numerical control manual and automatic programming technology; Suitable for organizing training in higher vocational colleges. Suitable for CNC programmers in factory design department and process department. This kind of personnel is in great demand, especially in the mold industry, and the treatment is also high. Maintenance personnel of CNC machine tools: master the mechanical structure and electromechanical debugging of CNC machine tools, master the operation and programming of CNC machine tools, and be familiar with the characteristics of various CNC systems, software and hardware structures, PLC and parameter settings. Proficient in electromechanical debugging and maintenance of CNC machine tools. Suitable for organizing training in higher vocational colleges. It is suitable for engineers and technicians in the equipment department of the factory. The demand for such personnel is relatively small, but it is very difficult to train such personnel, which requires a wide knowledge structure, strong ability to adapt to CNC-related work, and a lot of practical experience accumulation. CNC generalist: Have and master the comprehensive knowledge needed by CNC operators, CNC programmers and CNC maintenance personnel, and have accumulated a lot of practical experience in practical work with a wide range of knowledge. Proficient in the mechanical structure design of CNC machine tools and the electrical design of CNC system, and master the electromechanical alignment of CNC machine tools. Can complete the selection of CNC system, the design, installation, debugging and maintenance of electrical system of CNC machine tools. Can independently complete the numerical control transformation of machine tools. It is a sought-after talent in enterprises (especially private enterprises) and has a high salary. Suitable for organizing training in higher vocational colleges. Provide special training measures and guidance from famous teachers to promote its success. Suitable for being the technical director of an enterprise or the electromechanical design director of CNC machine tool product development in a machine tool factory. For the above CNC talents, the main basic knowledge is basically the same, and the content and focus of professional courses are different. In the course setting, it is especially necessary to strengthen the content of practical training with enterprises, teach students in accordance with their aptitude, and cultivate talents needed by enterprises. During my school days, I mainly obtained the professional qualification certificate of numerical control, computer grade certificate of national universities, intermediate certificate of AutoCAD, intermediate certificate of maintenance electrician/machinist, etc.
Question 5: What are the professional titles and professional certificates of CNC technology specialty? 2, the content of numerical control technology, the school is not the same, but generally similar. The following information is for your reference. (1) Features of three-year higher vocational education: to cultivate compound high-tech applied talents with strong practical ability, all-round development in morality, intelligence, physique and aesthetics, basic theoretical knowledge and application ability of numerical control technology, and engaged in numerical control processing, programming, maintenance and management. Curriculum: modern engineering graphics, engineering mechanics, mechanical design basis, pneumatic, hydraulic and electrical control technology, mechanical design basis, electrical and electronic technology, special processing technology, programmable controller, numerical control processing technology, numerical control machine tools, CAD/CAM technology, typical numerical control system, fault analysis and maintenance of numerical control machine tools, technical training of numerical control machine tools and professional qualification appraisal. Employment prospects: Graduates of this major have good employment prospects. After graduation, I can engage in modern manufacturing numerical control technology and modern equipment operation, programming, maintenance and management. (2) Training objectives of the major of machining and numerical control technology: this major trains and masters the working principle, operation, debugging and maintenance methods of machining equipment such as turning, milling, grinding, planing and drilling; Proficient in the application of materials and process analysis, regulation formulation and manufacturing technology of various parts; Master computer drawing, NC machining technology and NC machining programming, operate NC machining equipment, and cultivate skilled talents who can engage in machining, operation and maintenance of NC machine tools, NC programming and production management. Main courses: mechanical drawing, CAD/CAM software, metal materials and heat treatment, engineering mechanics, tolerance fit, mechanical foundation, electrotechnics, machine tool fixture, mechanical manufacturing technology, turning technology, numerical control technology and programming, enterprise management, etc. Professional skills: lathe worker's primary level, national cartographer's intermediate level, CNC lathe programming and processing (intermediate level), CNC milling machine programming and processing center programming and processing. Employment: Mainly engaged in NC machining technology and programming, operation and maintenance of NC equipment, installation, debugging and maintenance of NC equipment, organization and management of workshop production. (3) The curriculum of CNC major includes Chinese, politics, physical education, mathematics, English, mechanical drawing, mechanical foundation and hydraulic technology, metal materials and heat treatment, computer application foundation, programming of CNC machine tools, tolerance fit and technical measurement, metal cutting principles and tools, metal cutting machine tools, machine tool electricity and turning technology.
Question 6: What are the professional certificates of numerical control? 2. The content of each school of numerical control technology is different, but it is almost the same. The following information is for your reference. (1) Features of three-year higher vocational education: to cultivate compound high-tech applied talents with strong practical ability, all-round development in morality, intelligence, physique and aesthetics, basic theoretical knowledge and application ability of numerical control technology, and engaged in numerical control processing, programming, maintenance and management. Curriculum: modern engineering graphics, engineering mechanics, mechanical design basis, pneumatic, hydraulic and electrical control technology, mechanical design basis, electrical and electronic technology, special processing technology, programmable controller, numerical control processing technology, numerical control machine tools, CAD/CAM technology, typical numerical control system, fault analysis and maintenance of numerical control machine tools, technical training of numerical control machine tools and professional qualification appraisal. Employment prospects: Graduates of this major have good employment prospects. After graduation, I can engage in modern manufacturing numerical control technology and modern equipment operation, programming, maintenance and management. (2) Training objectives of the major of machining and numerical control technology: this major trains and masters the working principle, operation, debugging and maintenance methods of machining equipment such as turning, milling, grinding, planing and drilling; Proficient in the application of materials and process analysis, regulation formulation and manufacturing technology of various parts; Master computer drawing, NC machining technology and NC machining programming, operate NC machining equipment, and cultivate skilled talents who can engage in machining, operation and maintenance of NC machine tools, NC programming and production management. Main courses: mechanical drawing, CAD/CAM software, metal materials and heat treatment, engineering mechanics, tolerance fit, mechanical foundation, electrotechnics, machine tool fixture, mechanical manufacturing technology, turning technology, numerical control technology and programming, enterprise management, etc. Professional skills: lathe worker's primary level, national cartographer's intermediate level, CNC lathe programming and processing (intermediate level), CNC milling machine programming and processing center programming and processing. Employment: Mainly engaged in NC machining technology and programming, operation and maintenance of NC equipment, installation, debugging and maintenance of NC equipment, organization and management of workshop production. (3) The curriculum of CNC major includes Chinese, politics, physical education, mathematics, English, mechanical drawing, mechanical foundation and hydraulic technology, metal materials and heat treatment, computer application foundation, programming of CNC machine tools, tolerance fit and technical measurement, metal cutting principles and tools, metal cutting machine tools, machine tool electricity and turning technology.
Question 7: How is the certificate of CNC machine tools graded? CNC machine tools * * * level is divided into five levels:
1, Grade 5/Primary School: those who have obtained the diploma of secondary vocational school (higher vocational school) and obtained the graduation (completion) certificate after reaching the required standard hours through relevant professional training.
2. Level 4/Intermediate:
(1) Engaged in this occupation for more than 2 years after obtaining the primary certificate;
(2) Those with relevant technical secondary schools (including technical schools and vocational schools) or above;
(3) employees of enterprises and institutions have been engaged in this occupation for more than 5 years.
3. Level III/Advanced:
(1) Having been engaged in this occupation for more than 3 years after obtaining the Level 4 certificate;
(two) to obtain a college degree in this major or related majors, and to engage in this occupation for more than 3 years;
(3) employees of enterprises and institutions have been engaged in this occupation for more than 8 years.
4. Level II/Technician:
(1) After obtaining the advanced certificate, he has been engaged in this occupation for more than 3 years, has been trained as a technician and reached the national standard, and has obtained the certificate of completion;
(2) Obtaining the advanced certificate of this occupation and working in this occupation for more than 5 years;
(3) graduated from a vocational and technical college or a senior technical school, obtained a senior vocational certificate, and worked in this profession for more than 2 years;
(4) Obtain an assistant engineer and have been engaged in this profession for more than 2 years in the front line.
5. Level I/Senior Technician:
(1) Obtain the professional technician certificate, have been engaged in the professional work for more than 2 years, have been trained by the professional senior technician to reach the national standard hours, and have obtained the certificate of completion;
(two) after obtaining the certificate of technician, engaged in this occupation for more than 5 years;
(3) Obtain an engineer and have been engaged in this profession in the production line for more than 3 years;
(4) obtain the qualification of lecturer and engage in internship guidance and teaching in vocational and technical colleges (or technical schools) for a long time;
(five) to obtain the qualification of a first-class internship instructor and to engage in this occupation for more than 3 years in a vocational and technical college;
(6) Obtaining a master's degree in the same or similar major, and having been engaged in the professional work in the production line for more than 3 years.
Question 8: What is the certificate required by the CNC major? CNC lathe workers are divided into five grades: junior workers, intermediate workers, senior workers, technicians and senior technicians.
The covers are all national vocational qualification certificates, which say grades and so on.
Question 9: What is the certificate for taking the numerical control major? It is more suitable for girls to draw carefully. Technicians or programmers are not tired and don't have to stay in the workshop all day. If you study numerical control, your school should be able to take the computer draftsman certificate, which is more suitable for you. I also graduated from CNC, so I can communicate with you if you have any questions.
Question10: What are the CNC certificates? Junior year: graduated from technical secondary school or related major.
Intermediate: Having worked in this industry for 2 years after graduating from junior college or obtaining primary level.
Engaged in this industry for three years after graduating from junior college or four years after obtaining intermediate level.
Content and steps of NC programming
When machining parts on ordinary machine tools, technicians should first analyze the manufacturability of the parts and formulate the technological procedures for processing the parts, including machine tools, cutters, positioning and clamping methods, cutting parameters, etc. Similarly, when machining parts on CNC machine tools, it is also necessary to analyze the process of parts and formulate process regulations. At the same time, the process parameters and geometric data should be recorded on the control medium according to the specified information format, and the information on this control medium should be input into the CNC device of the CNC machine tool, and the CNC device will control the machine tool to complete all the processing of the parts. We call the whole process from part drawing to making control medium of NC machine tool and checking it NC machining programming, or NC programming for short. NC programming is an important step in NC machining. The ideal processing program should not only ensure that qualified parts that meet the requirements of drawings are processed, but also make full use of the functions of CNC machine tools to make CNC machine tools work safely, reliably and efficiently.
Generally speaking, the main contents of NC programming process include: analysis of part drawing, process treatment, numerical calculation, preparation of machining program sheet, production of control medium, program verification and trial machining of the first piece.
The specific steps and requirements of NC programming are as follows:
1. Analyze the part drawing
Firstly, the material, shape, size, precision, batch number, blank shape and heat treatment requirements of the parts should be analyzed to determine whether the parts are suitable for machining on CNC machine tools or what kind of CNC machine tools are suitable for machining. At the same time, it is necessary to clarify the content and requirements of the treatment.
2. Process treatment
On the basis of analyzing part drawings, process analysis is carried out to determine processing methods (such as fixture, clamping and positioning methods, etc.). ), processing route (such as tool setting point, tool changing point, feed route) and cutting parameters (such as spindle speed, feed speed, back feed, etc. ) part. The analysis and treatment of NC machining process is the premise and foundation of NC programming, and NC programming is to program the content of NC machining process. When making NC machining technology, it is necessary to reasonably select machining scheme, and determine machining sequence, machining route, clamping mode, cutter and cutting parameters. At the same time, we should also consider the command function of the CNC machine tool used to give full play to the efficiency of the machine tool; Shorten the machining route as far as possible, correctly select the tool alignment point and tool change point, reduce the number of tool changes and facilitate numerical calculation; Reasonable selection of cutting point, cutting point and cutting mode to ensure the smooth progress of cutting process; Avoid the interference between the tool and the non-machining surface and ensure the safety and reliability of the machining process. About the content of NC machining technology, we will make a detailed introduction in Section 2.3 and Section 2.4 of Chapter 2.
3. Numerical calculation
According to the geometric dimensions of the part drawing, the determined process route and the set coordinate system, the rough machining and finish machining trajectories of the part are calculated, and the tool position data are obtained. For the contour machining of parts with simple shapes (such as parts composed of straight lines and arcs), coordinate values of the starting point and ending point of geometric elements, the center of arc, the intersection point or tangent point of two geometric elements should be calculated, and the coordinate values of the tool center should also be calculated if the CNC device does not have the tool compensation function. For parts with complex shapes (such as parts composed of non-circular curves and surfaces), it is necessary to approximate them with straight or circular segments, and calculate the coordinate values of nodes according to the requirements of machining accuracy. This numerical calculation is generally done by a computer. The content of numerical calculation will be introduced in detail in chapter 3.
4. Write the processing program sheet
According to the machining route, cutting amount, tool quantity, tool compensation, machine tool auxiliary action and tool motion trajectory, the program sheet of part machining is written according to the instruction code and program segment format used by the numerical control system, and the above two steps are checked to correct errors.
5. Making control media
The content of the compiled program list is recorded on the control medium as the input information of the numerical control device. It is sent to the numerical control system through manual input or communication transmission of the program.
6. Program Verification and First Piece Trial Cutting
The written program sheet and the prepared control medium must be checked and cut before they can be officially used. The verification method is to directly input the contents of the control medium into the numerical control system, let the machine idle and check whether the motion trajectory of the machine tool is correct. It is more convenient to test by simulating the cutting process of tools and workpieces on CNC machine tools with CRT graphic display, but these methods can only test whether the movement is correct, but not the machined workpiece ...