Due to the complexity of CNC machining (such as different machine tools, different materials, different tools, different cutting methods, different parameter parameters, etc.), it determines that CNC treatment (that it is Act of treatment or programming) on arrival The level must certainly go through a relatively long period. During treatment.
1. How to divide the processing process?
The division of the CNC processing process can generally be carried out in the following methods:
1. Tool concentration scal up consists in dividing the process according to the tools used and using the same tool to process parts to be completed on parts. Use the second knife and the third to finish the other parts they can finish. This can reduce the number of knives, compress air and reduce unnecessary positioning errors.
2. The treatment parts are divided into several parts according to their structural characteristics. Generally, positioning plans, positioning plans, then the treatment of holes; Treatment of simple geometric shapes, then complex geometric shapes;
3. For parts that are subject to the deformation of treatment with rough and precise treatment of treatment division, school forms must be carried out due to the deformation which can occur after approximate treatment. In summary, during the process division, we must depend on the structure and process process, the function of the machine, the quantity of parts of the parts, the number of parts of the parts, the number of installations and the unit production organization. It is also recommended to adopt the principle of concentration of the process or the principle of dispersed processes.
2. What principles should be followed by the provision of the processing order?
The arrangement of the treatment sequence must be taken into account according to the structure of the parts and the state of the roughness, as well as the positioning and tightening needs. The order must generally be made in the following principles:
1. The treatment of the higher procedure cannot affect the positioning and tightening of the track process.
2. Give the process of processing the internal cavity of the internal cavity of the inner shape, then perform the form processing process.
3. It is preferable to connect to the same positioning, tightening method or processing process of the same processing to the knife to reduce the repeated number of positioning time, and the number of times and the number of times when the sword is modified .
4. The multiple processes carried out in the same installation must first be organized as the rigidity of the part is damaged.
Third, what is the determination of the part and the light method?
When determining the positioning benchmark and the tightening scheme, pay attention to the following three points:
1. Start from design, process and programming calculations.
2. Minimize the number of lights as much as possible, and as much as possible, you can treat all the surface surfaces to be treated after a positioning.
3. Avoid adopting manual adjustment patterns.
4. The luminaire must be smooth and its positioning and tightening mechanisms cannot affect the walking knife in treatment (such as collision).
Fourth, how can we determine that the knife is more reasonable? What is the relationship between the part coordinate system and the programming coordinate system?
1. The knife point can be located on the treatment parts, but note that the knife point must be the reference index or the part which has been processed. , which will lead to the second channel. Benchmark. This is generally located on the tool-tool or the lighting. The principle of its selection is as follows:
1) It is easy to find positive.
2) Practical programming.
3) The knife error is small.
4) It is practical and verified during treatment.
2. The point of origin of the coordinate system of the part is defined by the operator himself. Once the coordinate system of the part is fixed, it generally does not change. The coordinate system of the parts and the programming coordinate system must be unified, that is to say during treatment, the coordinate system of the parts and the programming coordinate system are consistent.
5. How to choose the knife route?
The knife route is the movement trajectory and the direction of the knife in relation to treatment parts during the index processing process. The reasonable choice of the treatment route is very important because it is closely linked to the processing precision and the quality of the room surface. The following points are mainly taken into account by determining the knife route:
1. Ensure the precision requirements for processing parts.
2. Practice for digital calculations and reduce the programming workload.
3. Look for the shortest processing route to reduce empty knife time to improve treatment efficiency.
4. Minimize the number of program segments.
5. To ensure the roughness of roughness after the surface of the outline of the room, the final outline must be organized to be treated continuously.
6. The progress of the knife (cut and cut) The route must also be carefully considered to minimize the knife marks at the outline (the cut force suddenly changes to the elastic deformation).
6. How to monitor and adjust during treatment?
Once the part is found and the program debugging is completed, the automatic processing step can be entered. During the automatic processing process, the operator must monitor the cutting process to prevent the quality of the room and other accidents caused by the non -normal cut.
Monitor the cutting process, mainly considering the following aspects:
1. The monitoring process monitoring rough treatment mainly considers rapid resection of the excessive quantity of the surface of the room. During automatic machine processing, depending on the set amount, the tool is automatically cut depending on the planned cutting trajectory. Currently, the operator must pay attention to the observation of loading changes in the load in the automatic processing process via the cutting load table, adjust the quantity of cut in the quantity of cut according to The tool tolerance of the tool and gives a complete game to the maximum efficiency of the machine tool.
2. During the cutting process, cutting the cutting sound during the automatic cutting process, the sound of the cutting part of the tool is generally stable, continuous and fast during the cut. As the cutting process is carried out, when there are hard points or knives or knives on the room, the cutting process is unstable. Currently, the quantity of cutting and cutting should be adjusted over time.
3. Monitoring and processing of the precision processing process are mainly to guarantee the size of the room treatment and the quality of the processing surface. Currently, the impact of dandruff tumors on the surface of the treatment should be concentrated. For the solution of the above problems, we consider paying attention to the adjustment of the spraying position of the cutting fluid to make the treatment surface at the time of cooling; And to adjust the quantity of cut to avoid quality changes as much as possible. If there is still no obvious effect, the initial prosecution procedure must be stopped.
It is particularly noted that when a suspension of inspection or inspection of stop, pay attention to the position of the tool. If the tool is stopped during the cutting process, the sudden stop of the main axis will cause knife brands to generate the surface of the room. Consider the stop when left with a knife.
4. The quality of knife monitoring The tool determines the quality of treatment of the part. In the automatic processing process, it is necessary to determine the normal wear and tear and the state of the non -normal damage to the tool by monitoring the sound, the control of the cutting time, the suspension of the inspection, room surface analysis and other methods. Depending on the treatment requirements, the appropriate treatment of tools should be processed in time to avoid the quality of treatment problems caused by the treatment of the tool on time.
7. How to reasonably choose a treatment tool? How many elements cut? How many materials are there? How to determine the speed of the tool, the cutting speed and the cutting width?
1. When the grinding by plane, you must choose a non -enriching hard alloy ending or a vertical milling cutter. Generally, during milling, try to use a secondary knife as much as possible. The width of each knife is recommended at 60% to 75% of the diameter of the tool.
2. The ending of the vertical milling fragmentation and a hard alloy blade are mainly used to treat convex, grooves and boxes.
3. Ball knives, round knives (also known as round nasal knife) are often used for the treatment of curved surfaces and diagonal angle contours. KALM is mainly used for the treatment of semi-precision and precision treatment. Round knives with hard alloy knives are mainly used for roughness.
8. What are the effects of the treatment program?
1. The processing program is one of the contents of the design of the CNC processing process, and it is also a regulation that obliges the operator to comply and execute. The program should not only be careful.
2. In the processing form, it must include: names of drawing and programming files, parts, sketches, program names, the maximum depth of the tool and the cut of each Program, treatment of nature (such as gross treatment or precision treatment), theoretical treatment time, etc.
9. What are the preparations for CNC programming?
After determining the processing process, you must understand before programming:
1. The installation method of the part;
2. The size of the wool embryo order to determine the scope of the treatment or if it should be installed several times;
3. Part materials —- What type of tool can be used to choose;
4. What are the inventory knives-avoid the program because there is not such a knife during treatment.
10. What are the principles of programming safety?
Principle of safety and height adjustment: generally greater than the highest surface of the island. Or define the zero programming point on the highest surface, which can also avoid the danger of hitting the knife to the greatest measure.
Eleven, after the compilation of the Chemin du Couteau, why should you do post-procedure?
Since the NC address and program code formats that the different machine tools can recognize are different, the correct post-procedure format must be selected for the machine tools used to ensure that the modified program can be executed.
12. What is DNC communication?
The program transmission method can be divided into two types of CNC and DNC. . The program of realization by The Memory to carry out the program to carry out the program for procedures to carry out the program for the memory to carry out the program to carry out the program to carry out the program to carry out the program to carry out It of memory during treatment. Because memory capacity is limited by size, it can be treated by DNC when the program is large. .
1. There are three major elements of the cutting dose: cutting depth, zone speed and power speed.
2. Classified by materials, the tools are generally divided into ordinary white steel knives (the materials are in high speed steel), coating knives (such as titanium veneer, etc.), alloy knives ( Like tungsten steel, boron nitride knife, etc.).
Daguang focuses on providing solutions such as precision CNC machining services (3-axis, 4-axis, 5-axis machining), CNC milling, 3D printing and rapid prototyping services.
