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First of all: understand the basic parameters and technical indicators of the machine tool, the maximum processing size, the maximum cutting force, the cutting speed, the spindle speed, the feed rate, etc.
Second: understand the structure and function, the bed spindle and feed system, cooling system, control system and other components of the machine tool, as well as the processing function and scope of use of the machine tool.
Third: the material of the machine tool, the quality of the material directly affects the rigidity, stability, durability of the machine tool, and the fourth: the overall performance and accuracy.
Fifth: the quality of the product, the evaluation and credibility of after-sales, as well as the best and cost-effective, according to their own needs and budget to evaluate whether it is worth buying.
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Summary. CNC milling machine is an automatic processing equipment developed on the basis of general milling machine, the processing technology of the two is basically the same, and the structure is somewhat similar. CNC milling machines are divided into two categories: without tool magazine and with tool magazine.
Among them, the CNC milling machine with a tool magazine is also called a machining center. In addition to the characteristics of ordinary milling machine processing, CNC milling processing also has the following characteristics: machining center.
1. The adaptability and flexibility of parts processing are strong, and the parts with particularly complex contours and shapes or difficult to control the size can be processed, such as mold parts, shell parts, etc.;
2. It can process parts that cannot be processed by ordinary machine tools or are difficult to process, such as complex curve parts described by mathematical models and three-dimensional space surface parts;
What is the combination of machine tools?
CNC milling machine is a kind of self-starting processing equipment developed on the basis of general milling machine, the processing technology of the two is basically the same, and the structure is somewhat similar. CNC milling machines are divided into two categories: without tool magazine and with tool magazine. Among them, the CNC milling machine with a tool magazine is also called a machining center.
In addition to the characteristics of ordinary milling machine processing, CNC milling processing also has the following characteristics: machining center 1, parts processing adaptability, good flexibility, can process parts with particularly complex contour shape or difficult to control the size, such as mold parts, shell parts, etc.; 2. It can process parts that cannot be processed or difficult to process by ordinary machine tools, such as complex curve parts and three-dimensional space surface parts described in mathematical models;
3. It can process parts that need to be processed in multiple processes after a clamping and positioning; 4. The precision of the sail bucket is high, the processing quality is stable and reliable, the pulse equivalent of the numerical control device is general, the high-precision numerical control system can reach, in addition, the numerical control machining also avoids the operator's operation error; 5. The high degree of production automation can reduce the labor intensity of the operator. It is conducive to the automation of production management; 6. The production efficiency is high, the CNC milling machine generally does not need to use special process equipment such as special fixtures, and only the processing program, clamping tools and adjustment tool data stored in the numerical control device need to be called when replacing the workpiece, so that the production cycle is greatly shortened. Secondly, the CNC milling machine has the functions of milling machine, boring machine and drilling machine, which makes the process highly concentrated and greatly improves the production efficiency.
In addition, the spindle speed and feed speed of the CNC vertical car milling machine are continuously variable, so it is conducive to selecting the best cutting amount.
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The main motor type is selected, and the main drive system of the CNC vertical lathe is driven by the motor to rotate the spindle through the base gearbox. In order to ensure the consistency of the quality of the workpiece in the processing process, it is necessary to ensure the constant linear speed of cutting, that is, it is necessary to ensure that the CNC system can carry out stepless speed regulation of the motor; At the same time, in order to ensure that the lathe has the function of turning threads, it is necessary to coordinate the feed relationship between the speed of the worktable and the thread turning tool through the system, so a photoelectric pulse encoder is installed at the bottom of the spindle, and the angular displacement signal of the spindle is transmitted to the numerical control system through the encoder, and after the numerical control system processes the signal, the signal is transmitted to the feed motor, so as to achieve the purpose of coordinating the spindle speed and the feed.
Spindle pulse encoder selection, the use of pulse encoder is mainly to achieve the function of cutting threads, so it must be selected according to the highest speed of the spindle. When selecting, on the basis of meeting the functional requirements, it is also necessary to consider economy and practicality as much as possible.
With professional production technology and high-quality service business philosophy, the company has won the praise and trust of our customers. The company's development goal is to enhance the core competitiveness of the enterprise with high and new technology, constantly seek innovation, promote the development of the enterprise with innovation, drive the sales, design, production and manufacturing mode to be fully in line with the world, and strive to build our company into a first-class enterprise in China.
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A machine tool that sells well has the following advantages:
1. Strong adaptability and flexibility of side stress resistance.
When the type of processed product changes, only the CNC program needs to be changed to meet the transformation requirements, and there is no need to adjust the machine tool structure, so that the production cycle can be shortened, the cost can be saved, and the production efficiency can be improved.
2. Good economic benefits.
When using CNC machine tools to process workpieces, it can reduce the use of process equipment, shorten the production cycle, and also has the advantages of convenient management and low scrap rate, which can improve our efficiency.
3. High degree of automation and high productivity.
The machining allowance can be reasonably selected according to the specific situation, which greatly shortens the machining time. Equipped with a variety of detection elements, it can be accurately positioned and measured. There is no need for manual positioning and measurement of socks, which further improves production efficiency, and at the same time, the labor intensity of workers is also reduced.
4. High processing accuracy and stable product quality.
The positioning accuracy and repeated positioning accuracy of the machine tool are very high, as long as the process design and procedure are correct and reasonable, coupled with careful operation, the parts can be guaranteed to obtain high machining accuracy, and it is also convenient to implement quality control in the machining process.
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The choice of machine tool depends on your processing requirements, whether you use more metal cutting or forging process. Lathes, boring machines, milling machines, planers, grinding machines, and drilling machines are divided according to different processing needs.
On the other hand, if the spatial structure of the parts to be machined and the surface is more complex, you can use CNC machine tools, such as machining centers.
All in all, the choice of machine depends on your actual machining needs.
If you have answered your question, you are also welcome to do so.
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If the economy allows, choose the big rather than the small.
The woodworking car can adjust the direction of the front of the car best. The distance between the two centers of the lathe should be greater than 700mm. Because if one day you want to make a garden leg table, rolling pins and other objects, it will be very convenient.
Balcony party and toilet party can be smaller, because in general, the noise is directly proportional to the size of the car. Weight is also something to consider for the balcony party, and metal gears for metalworking cars are noisier than nylon gears. But the intensity is higher.
If you can follow the operating procedures to implement it. Nylon gears can do the same, not plastic gears as most people imagine. CNC lathe is not suitable for pot friends who do not have a certain computer knowledge.
Friends who know fitter technology can choose second-hand goods, and novices should buy new ones. Because general fault repair is a pleasure for those who have technology, and a misery for novices.
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How to buy second-hand machine tools?
Nanjing Fangrun Materials**** - is a regular material company strictly registered by the State Administration and Nanjing Industrial and Commercial Bureau, and is a new type of company dedicated to social and environmental protection. The company's long-term door-to-door use of various waste materials and idle equipment, reasonable use, honesty and trustworthiness, commitment to cash transactions, safe and fast. Units and individuals with waste materials are welcome to contact and negotiate ** matters.
In recent years, there has been an increase in the number of used equipment**. The progress of society promotes the progress of various enterprises, that is to say, every enterprise wants to keep pace with the times, then it must improve its own capabilities, and its ability refers to the continuous updating of its internal high-tech equipment. There is no doubt that while updating the equipment, there will naturally be the elimination of old equipment.
In fact, although a large number of old equipment looks old and worn, the value of its existence should not be underestimated, and its value is called surplus value.
The second-hand machine tool and equipment market is necessary in the process of industrialization in China. So, how to buy the most reliable second-hand machine tools? In the face of cheap, cost-effective second-hand machine tools, many machine tool users with tight capital costs want to buy.
However, the following three aspects need to be considered comprehensively.
First, if a company wants to buy a second-hand machine tool, it needs to go to the designated second-hand machine tool market to choose. Before buying second-hand machine tools, it is recommended that you check the relevant machine tool information on the Internet according to the production situation of your own enterprise in advance, and select the machine tool brand and machine model you want to buy.
Second, conduct on-the-spot inspections to the second-hand machine tool market, shop around, and select second-hand CNC lathes suitable for your own enterprises.
Third, the status quo of second-hand machine tools and the size of the manufacturer will affect the selling price. Finally, you must find a professional second-hand machine tool equipment company to buy second-hand machine tools.
The residual value of second-hand machine tools is extremely expensive, so you must make full use of their regenerative value.
At present, many enterprises want to take the road of "open source and reduce expenditure", so they will choose to buy high-quality second-hand machine tools. At the same time, if the waste machine tool is not the best, it will seriously pollute the environment, and it will also waste the residual value of the second-hand machine tool.
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First of all, we must choose the right platform, generally large-scale trading platforms have a certain guarantee in quality, and secondly, we need to look at the age of the machine, fineness and so on.
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On the one hand, it depends on the matching degree of the model and the product, and the second is to look at the cost performance.
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The selection of CNC machine tools is a comprehensive technical problem, daily necessities can be thrown away if they are not suitable, CNC machine tools can not work, now there are countless varieties of CNC machine tools at home and abroad, if enterprises need to buy CNC machine tools suitable for themselves, then the choice of CNC machine tools should be considered comprehensively The following points:
1. Preliminary preparations: determine the batch and processing requirements of the processed workpiece, and formulate whether the CNC machine tool can meet the processing requirements according to the structural size of the parts and the processing range.
2. CNC machine tool accessories and tool selection: machine tool accessories, spare parts and their best capabilities, and tool matching.
3. Choose the cost performance of CNC machine tools: so that the function and accuracy are not idle and not wasted.
4. Reliability of CNC machine tools: understand the brand, reputation, function, accuracy requirements and production efficiency of machine tools.
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