Exploration on the Teaching Method of Integrated Management of Numerical Control Machine Tools

First, the characteristics of the "practical integration" teaching model:

The so-called rational integration teaching is to combine the professional theory class with the practical training course. This teaching mode emphasizes the leading role of the teacher. Through the setting of teaching tasks and teaching objectives in the teaching process, both teachers and students can teach each other. Studying and doing the same, constructing a quality and skill training framework throughout the whole process, enriching the classroom teaching and practical teaching links, and improving the quality of professional teaching. It solves the phenomenon that the previous theoretical teaching and professional practice are out of touch. In the whole teaching process, the theory and Practice alternates, intuitive and abstract interlace, there is no fixed pre-existing or rational, but rational, real and reasonable, not only to achieve the communication and connection between theory and practice, but also to stimulate students Active learning of interest and passion. This kind of teaching method pays attention to the cultivation of students' quality education and operation skills, emphasizes doing middle school and learning, and achieves the ability to train students to analyze and solve problems independently in the process of doing and learning, and pay attention to the cultivation of students' professional quality.

Second, the micro-top CNC machine tools in the "realistic integration" teaching application:

In the old-fashioned teaching methods, many schools have large-scale internship equipment. When students are internships, they usually have more than a dozen people and one machine tool. The students’ practice time is very short, and some even have no way to get in touch. Machine tools, so it is impossible to improve the quality of teaching to complete the teaching tasks, and the talents cultivated are usually theoretical. The application of small CNC machine tools in teaching is the trend of the times. Although the machine tools are small and complete, they can produce better teaching results with a fraction of the input. They can effectively solve the problem of insufficient funds and venues in real teaching, reduce procurement costs and strengthen Teaching density, reducing internship consumption, improving teaching effectiveness, multiple safety settings to improve operational safety, solving the problem of numerical control teaching in the early stage, while ensuring safety and stability, energy saving and environmental protection, efficient consumption reduction, large-scale teaching, and increased machine time, Students are safe, teachers are relieved, and the burden on teachers is reduced.

The main features of the desktop small CNC machine tool in the integrated teaching application:

1, small size, light weight, using 220 power supply, a standard classroom can put 30 small CNC machine tools, one person and one machine.

2. The structure is the same as that of a large-scale CNC machine tool, and the same numerical control machine is used to operate the numerical control system. It is a scaled-down version of the large-scale CNC.

3, the use of safety, reduce the fear of students facing the machine for the first time, students practically fast, initiative; machine tool internship materials and tools consumption; small footprint, placed on the ordinary desk; power consumption, even Long-term internships, no need to worry about electricity bills, but it is quite in line with energy conservation and environmental protection policies.

4, configure professional CNC system, such as wide number, Huazhong, Siemens, Fanuc, and equipped with electronic hand pulse, cooling system, lubrication system, etc., using the same methods and functions as large professional CNC machine tools, can process steel and iron , aluminum-copper, plastic, etc.; students master not only the knowledge of the programming and numerical control system operation panel, but more importantly, the students use the small CNC machine tool of the professional numerical control system, and can also master the machining arrangement of the machining, the precision of the workpiece machining and the different The hardness of the material uses the choice of the tool (the requirements that must be mastered in the actual machining), and fully demonstrates the small CNC machine tools in the teaching requirements of the theory and practice of CNC teaching.

Third, "practical integration" machine tool configuration:

Product name

model

Quantity

unit price

Accessories and consumables

Bench-top small CNC milling machine

(4-axis linkage)

10

Â¥49800

Accessories: 4th axis CNC indexing head, elastic milling chuck set, 58 sets of combined platen, fast pliers, 6 sets of imported carbide milling cutter, 7 sets of HSS keyway milling cutter, Mohs No. 3 disc milling Knife, eccentric edge finder

Consumables: 50 sheets of aluminum plate 80*80*20mm

Acrylic board 100 pieces 100*100*10mm

PVC board 100 pieces 80*60*5mm

A3 iron plate 10 pieces 60*60*10mm

20 copper rods: 100*20mm

Desktop small CNC lathe

C000056A

10

Â¥38600

Accessories: 7-piece machine clamp, 11-piece turning tool, Mohs No. 1 active top, 13mm tail sitting chuck with taper shank

Consumables: 50 aluminum rods 100*20mm

PVC rod 100 100*20mm

20 copper rods: 100*20mm

Desktop micromachining center

VMC200

2

Â¥89000

Accessories: 58 sets of combined platen, fast pliers, 6 sets of imported carbide milling cutter, 7 sets of HSS keyway milling cutter

Benchtop five-axis machining center

VMC230

1

Â¥186000

Accessories: 58 sets of combined platen, fast pliers, 6 sets of imported carbide milling cutter, 7 sets of HSS keyway milling cutter

Fourth, the "practical integration" teaching advantages:

The practical and integrated teaching is actually a four-in-one teaching mode of “teaching, learning, doing, and testing”. In the teaching process, this teaching method has the following obvious advantages:

(1) Breaking the traditional teaching mode of classroom teaching, solving the problems of inconsistency and non-cohesion of theoretical knowledge and practical operation skills in teaching, not only mobilizing students' subjective initiative, but also cultivating students' comprehensive ability to analyze and solve problems. The classroom atmosphere was activated, and the advantages of teaching venues and facilities were fully utilized, and limited teaching time was effectively utilized to improve classroom teaching efficiency.

(2) Scientifically and effectively transform abstract and boring theoretical knowledge into a lively and interesting practice process, verify it in practice, enable students to get perceptual knowledge from practice, and consciously raise perceptual knowledge into rational understanding. In order to develop thinking ability and exercise hands-on ability, the whole teaching process can get twice the result with half the effort.

(3) Effectively combine classroom teaching with professional practice, integrate skill practice into classroom teaching, let students learn the necessary operational skills in the future in the classroom, change passive learning into active participation, and mobilize the enthusiasm of students to learn. Initiative strengthens students' practical ability and has positive significance for improving teaching effectiveness and enhancing students' practical skills.

(4) Effectively improve the theoretical level and practical operation ability of the teaching staff, and enable the teachers to continuously study the teaching methods in the teaching process, and constantly grasp new knowledge and new technologies to meet the teaching needs. Continuously improve the teaching ability and teaching level of teachers.

V. The number of practical and integrated training equipment technology

C17A desktop small CNC milling machine (4-axis linkage)

Characteristics

1. Optional 4th axis can be 4-axis linkage, equipped with industrial-grade panel 4-axis CNC system, and with electronic hand-pulse. Although the machine tool is small and complete, students who use this equipment can directly operate large machine tools;

2, can be combined with industrial 4.0 robots to form an automated production line, powerful network functions, can achieve multi-machine interconnection, support remote monitoring and DNC file transfer processing, U disk and other communication methods;

3, perfect self-diagnosis function, real-time display of internal and external status, alarm immediately;

4, using ISO standard G code programming, support M code and S code, fully compatible with FANUC, Mitsubishi G code and a variety of CAD / CAM software (MasterCAM, UG, CAXA and other software programming, etc.); support powerful B-class macro analysis function To facilitate users to develop their own motion control programs;

5, teaching function: teaching + instruction programming, using the tabular teaching method, the teaching method is simple and intuitive;

6. Graphic simulation function: display the graphics of the machining program and the tool movement track during the actual operation, simulate the tool path without controlling the machine tool operation, and check whether the programmed machining program is correct;

7. It is made of selected high-quality cast iron material, adopts high-precision grinding ball screw, fully enclosed structure, improves safety and observation; covers an area of ​​0.5 square meters, has a large randomness in placement, can be placed on the podium On, use 220V voltage. The practical machine tool with actual processing capability and precision is safe and stable, allowing students to master the actual CNC machine tool programming and operation capabilities, and bid farewell to learning CNC machine tool mode with simulation software;

8, detachable, small machine, small and complete small CNC milling machine structure to display the various parts of the machine tool and achieve machine disassembly, commissioning, measurement, assembly; learning milling machine structure construction principle, disassembly process, commissioning method and machine tool maintenance Casting parts, the weight of the whole machine is appropriate, the design is full open structure, the size is suitable, the students do not need to climb up and down when assembling and debugging, the requirements on the area of ​​the laboratory are greatly reduced, and the students can have no lifting equipment in the laboratory alone. Easy to adjust in case, removable and detachable;

9. The main processing materials are: steel, iron, copper, aluminum, plastic and other materials (the consumables are basically unrestricted);

Technical Parameters:

●Repeat positioning accuracy: 0.02mm

●Maximum drilling diameter: 13mm

●Maximum milling diameter: 16mm

●System resolution: 0.0025mm

●Workbench size: 380×90mm

●X/Y/Z axis direction stroke: 210/95/200mm

●Work table T-slot size: 12 mm

●Working table T-slot number: 3

● Spindle taper: MT3

● Screw: Industrial grade C3 ball screw

●Electronic handwheel: equipped with 4-axis electronic handwheel (MSG)

● Spindle speed range: 100-3500 rev / min (CN system G code control frequency control)

● Fast moving speed: 1200mm/min

● Machines can be networked, support remote monitoring and DNC file transfer processing, U disk and other communication methods

● Machine structure: Fully enclosed structure to improve teaching safety and observation

● Spindle output power: 350W

● CNC system: industrial-grade panel 4-axis CNC system, 7-inch super large color LCD display screen, with graphic simulation function

●Multi-axis linkage function: The 4th axis interface is reserved, and the 4th axis can be added to realize the 4-axis linkage.

●Support software and format: Fully compatible with FANUC, Mitsubishi G code and various CAD/CAM software (MasterCAM, UG, CAXA and other software programming, etc.); Support powerful B-class macro analysis function, convenient for users to develop their own motion control programs;

● CNC indexing head (fourth axis): Support CNC indexing head (optional accessory)

●Power supply: AC220V/50Hz

● Machine size: 845 × 580 × 850mm

●Package size: 950×680×950mm

●Net weight / gross weight: 100Kg /120Kg

● Accuracy testing equipment: Accurate detection with Renishaw laser interferometer

Random accessories: 1 drill chuck, 1 drill chuck key, 1 drill chuck locking screw, 1 T-nut, 1 hex wrench, 1 double-head wrench, 1 oil can, hook head 2 wrenches, 1 ejector pin, 1 fuse, 1 flat-end pliers, 1 drill bit, 1 single-head wrench, 2 sets of instructions, machine tool lighting

C56A desktop small CNC lathe

1. It is equipped with professional industrial-grade panel numerical control system, with electronic hand-held pulse, built-in memory to meet various large program workpiece processing, G code control spindle speed;

2, powerful network functions, can achieve multi-machine interconnection, support remote monitoring and DNC file transfer processing, U disk and other communication methods;

3, perfect self-diagnosis function, real-time display of internal and external status, alarm immediately;

4, using ISO standard G code programming, support M code and S code, fully compatible with FANUC, Mitsubishi G code and a variety of CAD / CAM software (MasterCAM, UG, CAXA and other software programming, etc.); support powerful B-class macro analysis function To facilitate users to develop their own motion control programs;

5, teaching function: teaching + instruction programming, using the tabular teaching method, the teaching method is simple and intuitive;

6. Graphic simulation function: display the graphics of the machining program and the tool movement track during the actual operation, simulate the tool path without controlling the machine tool operation, and check whether the programmed machining program is correct;

7. It is made of selected high-quality cast iron material, adopts high-precision grinding ball screw, fully enclosed structure, improves safety and observation; covers an area of ​​0.5 square meters, has a large randomness in placement, can be placed on the podium On, use 220V voltage. The practical machine tool with actual processing capability and precision is safe and stable, allowing students to master the actual CNC machine tool programming and operation capabilities, and bid farewell to learning CNC machine tool mode with simulation software;

8. Removable, real small lathe bed structure displays various parts of the machine tool and realizes disassembly, debugging, measurement and assembly of the machine tool; learns the structural principle of the milling machine, disassembly and assembly process, debugging method and machine tool maintenance; casting parts, The weight of the whole machine is suitable, the design is full open structure, the size is suitable, the students do not need to climb up and down when assembling and debugging, the requirements on the area of ​​the laboratory are greatly reduced, and the students can easily adjust the equipment without lifting equipment in the laboratory. , removable and detachable;

9. The main processing materials are: steel, iron, copper, aluminum, plastic and other materials;

Technical Parameters

●Repeat positioning accuracy: 0.02mm

●Maximum turning diameter: 140mm

●Maximum clamping diameter: 70mm

●X/Z axis travel: 70/160mm

● Machine structure: fully enclosed structure to improve teaching safety and observation

● Spindle speed (stepless speed regulation): 100~2000 rev / min (CN system G code control frequency control)

●Maximum moving speed: 2000mm/min

●Maximum feedrate of X/Z axis: 1100mm / min

● Spindle through hole: 10mm

●Working table effective size: 130mm × 85mm

●Electronic handwheel: equipped with electronic handwheel

● Spindle hole Mohs taper: Mohs 2

●Tail shaft hole Mohs taper: Mohs 1

● Resolution: 0.0025mm

● Spindle output power: 150W

● Machines can be networked, support remote monitoring and DNC file transfer processing, U disk and other communication methods

●Spindle: C5 grade bead screw

● CNC system: industrial-grade panel system, 7-inch large color LCD display screen, with graphic simulation function, built-in memory

●Support software and format: Fully compatible with FANUC, Mitsubishi G code and various CAD/CAM software (MasterCAM, UG, CAXA and other software programming, etc.); Support powerful B-class macro analysis function, convenient for users to develop their own motion control programs;

●Power supply: AC220V/50Hz

●Net weight / gross weight: 50/60kg

●Outer size: 750×450×450mm

●Packing size: 850 × 470 × 470mm

● Accuracy testing equipment: Accurate inspection with Renishaw laser interferometer

Random accessories: fuse, three-jaw chuck key, top, T-nut, hex wrench, oil pot, double-head wrench, hook wrench, chuck reverse claw, outer end turning tool, manual

VMC200 Micro Teaching and Processing Center

1. Using 220 volts, it occupies a small area and consumes less power. It combines transparent acrylic and sheet metal to improve the safety of observation and ensure the structural stability of the machine is completely closed.

2, using a 4-station automatic tool change system, using 0.6Mpa air pressure.

3, function is increased, three-axis linkage, XENDOLL M4 industrial-grade panel numerical control system, suitable for international common procedures, automatic fault detection and alarm function, power-off memory function.

4. The spindle is a high-precision industrial grade high-speed spindle with a spindle accuracy of 0.005mm.

5, the speed of 50-24000 stepless frequency control, the spindle uses circulating water or oil cooling.

6, spindle motor power 2.2Kw, can be used for milling, drilling, engraving and other processes.

7. The three-axis track is covered with dustproof and anti-dust expansion and contraction cover, which protects the track and the ball screw from wear caused by cutting water and residual material.

8. Three-axis C3 precision double nut ball screw. After medium-frequency heat treatment and precision grinding, each shaft is pre-tensioned to reduce thermal deformation, and the positioning and repeating precision is high.

9. The machine adopts the Renishaw laser interferometer for accurate detection to ensure the three-axis precision backlash and ensure the positioning accuracy.

10, equipped with a 5-axis electronic hand pulse three-speed adjustable greatly facilitates the operation and tool setting.

Applicable industry: Maker, innovation laboratory, college or vocational college numerical control integrated technology training and teaching.

Technical Parameters

● Spindle accuracy: 0.005mm

●Repeat positioning accuracy: 0.02mm

●Clamping tool: 1-10mm

●Workbench: 400×110mm

●X-axis travel: 200mm

●Y-axis travel: 110mm

●Z axis travel: 200mm

● Spindle speed: 50-24000 rev / min

● Spindle motor power: 2.2 KW

●System resolution 0.00125mm

● Tool magazine number: 4 stations

●Automatic tool change system form: Pneumatic tool change

●Use air pressure: 0.55-0.6Mpa

● CNC system: XENDOLL M4 industrial grade panel CNC system

●Electronic MPG: 5-axis three-speed adjustable

●Workbench T-slot size: 12 mm

●Working table T-slot number: 3

●Power supply: AC220V/50Hz

●Dimensions: 850 × 670 × 1100 mm

● Weight: 150 kg

● Accuracy testing equipment: Accurate detection with Renishaw laser interferometer

Random accessories: electronic handwheel, tool holder, handle shank, tool holder wrench, ER lock chuck, twist drill 1, 2 milling cutters, flat pliers, double end wrench, hex bolt, washer, T nut , CNC system manual, CNC system electrical wiring manual, hardware manual

VMC230 miniature desktop five-axis machining center

Notable features

1. Using 220 volts, it occupies a small area and consumes less power. It combines transparent acrylic and sheet metal to improve the safety of observation and ensure the structural stability of the machine is completely closed.

2, the function is increased, 5-axis linkage, configuration XENDOLL M5 five-axis linkage CNC system, applicable to international common procedures, fault automatic detection alarm function, power-off memory function.

3, the spindle is ISO 20 type, equipped with 4 station tool magazine, which can greatly improve the processing efficiency and machining accuracy of complex products.

4. The spindle motor power is 1.1Kw, which can process steel parts, copper parts, aluminum parts, plastic parts, etc.

5. The three-axis track is covered with dustproof and anti-dust expansion and contraction cover, which protects the track and the ball screw from wear caused by cutting water and residual material.

6. Three-axis C3 precision double nut ball screw. After medium-frequency heat treatment and precision grinding, each shaft is pre-tensioned to reduce thermal deformation, and the positioning and repeating precision is high.

7. The machine adopts the Renishaw laser interferometer for accurate detection to ensure the three-axis precision backlash and ensure the positioning accuracy.

8, with a 5-axis electronic hand pulse three-speed adjustable greatly facilitates the operation and tool setting.

9. Configure intermittent lubrication system, full protection structure and configuration pneumatic broach system.

Technical Parameters

●Repeat positioning accuracy: 0.01mm

●Maximum drilling diameter: 16mm

●Maximum milling diameter: 60mm

●Workbench: 450×160mm

●X-axis travel: 230mm

●Y-axis travel: 210mm

●Z axis travel: 250mm

● Tool magazine number: 4 stations

●Axis linkage: 5-axis linkage

● CNC system: XENDOLL M5 five-axis CNC system

●Electronic MPG: 5-axis three-speed adjustable

●Workbench T-slot size: 12 mm

●Working table T-slot number: 3

● Spindle speed: 300-3500 rpm

● Spindle motor power: 1.1 KW

●Spindle type: ISO20

●System resolution 0.00125mm

●Automatic tool change system form: Pneumatic tool change

●Lubrication system: electric automatic lubrication system

●Power supply: AC220V/50Hz

●Dimensions: 1200 × 960 × 950 mm

● Weight: 250 kg

● Accuracy testing equipment: Accurate detection with Renishaw laser interferometer

Random accessories: electronic handwheel, tool holder, handle shank, tool holder wrench, ER lock chuck, twist drill 1, 2 milling cutters, flat pliers, double end wrench, hex bolt, washer, T nut , CNC system manual, CNC system electrical wiring manual

Sixth, CNC machine tool integration practical application case

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