Author: yangxueqin

PTJ(MINGHE) Factory is a is a cnc machining china manufacturer of hardware parts for solve customers problems .

What are the requirements for the division of CNC machining processes?

 

When CNC machining processes are divided, it must be flexibly controlled based on the structure and manufacturability of the parts, the functions of the CNC machining center machine tools, the number of parts CNC machining content, the number of installations and the production organization of the unit. It is also recommended to adopt the principle of process concentration or the principle of process dispersion, which should be determined according to the actual situation, but must strive to be reasonable. The division of processes can generally be carried out according to the following methods:

 

When CNC machining is divided into processes, it must be flexibly controlled according to the structure and manufacturability of the parts, the functions of the CNC machining center machine tools, the number of parts CNC machining content, the number of installations and the production organization of the unit. It is also recommended to adopt the principle of process concentration or the principle of process dispersion, which should be determined according to the actual situation, but must strive to be reasonable. The division of processes can generally be carried out according to the following methods:

 

1. Tool centralized sorting method.

 

This method is to divide the process according to the tool used, and use the same tool to process all the parts that can be completed on the part. In order to reduce the tool change time, compress the idle time, and reduce unnecessary positioning errors, the parts can be processed according to the method of tool concentration, that is, in one clamping, use one tool to process all the parts that may be processed as much as possible, and then Change another knife to process other parts. This can reduce the number of tool changes during the plasctic machining, reduce idle time, and reduce unnecessary positioning errors.

 

2, the order of processing parts.

 

The structure and shape of each part are different, and the technical requirements of each surface are also different. Therefore, the positioning methods are different during processing, so the process can be divided according to the different positioning methods.

 

For parts with a lot of processing content, the processing part can be divided into several parts according to its structural characteristics, such as inner shape, shape, curved surface or plane, etc. Generally, the plane and positioning surface are processed first, and then the hole is processed; the simple geometric shape is processed first, and then the complex geometric shape is processed; the parts with lower precision are processed first, and then the parts with higher precision requirements are processed.

 

3, the roughing and finishing are sorted in order.

 

When dividing the process according to factors such as the machining accuracy, rigidity and deformation of the part, the process can be divided according to the principle of separating rough and finishing, that is, roughing and then finishing. At this time, different machine tools or different tools can be used for processing; For parts that are prone to deformation during CNC machining, due to the deformation that may occur after rough machining, it needs to be corrected. Therefore, in general, all the rough and finishing processes must be separated.

Do you really understand five-axis machining? After reading it, you will suddenly realize!

5 Axis Machining, as the name suggests, is a mode of CNC machining. The linear interpolation movement of any 5 coordinates among X, Y, Z, A, B, and C is adopted. The machine tool used for five-axis machining is usually called a five-axis machine tool or a five-axis machining center. But do you really understand five-axis machining?
The development of five-axis technology
For decades, it has been widely believed that five-axis CNC machining technology is the only way to process continuous, smooth, and complex curved surfaces. Once people encounter unsolvable problems in the design and manufacture of complex curved surfaces, they will turn to five-axis machining technology. but. . .
Five-axis linkage CNC is the most difficult and most widely used technology in CNC technology. It integrates computer control, high-performance servo drive and precision machining technology, and is used in the efficient, precise and automated machining of complex curved surfaces. Internationally, the five-axis linkage numerical control technology is regarded as a symbol of the automation technology level of a country’s production equipment. Because of its special status, especially its important influence on aviation, aerospace, military industry, and technical complexity, western industrialized countries have always implemented the export license system for the five-axis CNC system as a strategic material.
Compared with three-axis CNC machining, from the perspective of technology and programming, five-axis CNC machining for complex curved surfaces has the following advantages:
　(1) Improve processing quality and efficiency
　(2) Expand the process range
　(3) Meet the new direction of composite development
But haha, but again. . . Due to interference and position control of the tool in the machining space, five-axis CNC machining has a much more complicated CNC programming, CNC system and machine tool structure than a three-axis machine tool. Therefore, the five-axis is easy to say, but it is really difficult to realize it! In addition, it is more difficult to operate well!
Speaking of five-axis, do you have to talk about the true and false five-axis? The difference between true and false 5-axis is mainly whether there is RTCP function. For this reason, the editor specially looked for the term!
RTCP, explain, Fidia’s RTCP is the abbreviation of “Rotational Tool Center Point”, literally means “rotating tool center”, the industry tends to slightly escape it as “turn around the tool center”, and some people literally translate it as “rotating tool” Central programming”, in fact, this is only the result of RTCP. The RTCP of PA is the abbreviation of the first few words of “Real-time Tool Center Point rotation”. Heidenhain refers to the similar so-called upgrade technology as TCPM, which is the abbreviation of “Tool Centre Point Management”, tool center point management. Other manufacturers call the similar technology TCPC, which is the abbreviation of “Tool Center Point Control”, tool center point control.
From the literal meaning of Fidia’s RTCP, assuming that the RTCP function is executed manually, the tool center point and the actual contact point between the tool and the workpiece surface will remain unchanged. At this time, the tool center point falls at the actual contact point between the tool and the workpiece surface. The tool holder will rotate around the tool center point. For ball-end tools, the tool center point is the target track point of the CNC turning code. In order to achieve the purpose of allowing the tool holder to simply rotate around the target trajectory point (ie the tool center point) when executing the RTCP function, it is necessary to compensate for the offset of the linear coordinates of the tool center point caused by the rotation of the tool holder in real time. It can change the angle between the tool holder and the normal at the actual contact point of the tool and the workpiece surface while keeping the tool center point and the actual contact point of the tool and the workpiece surface unchanged, so as to play the best cutting of the ball nose tool. Efficiency, and effectively avoid interference and other effects. Therefore, RTCP seems to be more standing on the tool center point (that is, the target trajectory point of the numerical control code) to deal with the change of the rotation coordinate.
Five-axis machine tools and numerical control systems that do not have RTCP must rely on CAM programming and post-processing, and plan the tool path in advance. For the same part, if the machine tool is changed, or the tool is changed, CAM programming and post-processing must be performed again. It is called fake five-axis, and many domestic five-axis CNC machine tools and systems belong to this kind of fake five-axis. Of course, it is understandable that people insist on calling themselves a five-axis linkage, but this (fake) five-axis is not the other (true) five-axis!
The editor therefore also consulted industry experts. In short, the true five-axis is five-axis and five-linkage, while the fake five-axis may be five-axis and three-linkage. The other two axes only play a positioning function!
This is a popular saying, not a standard one. Generally speaking, five-axis machine tools are divided into two types: one is five-axis linkage, that is, all five axes can be linked at the same time, and the other is five-axis positioning processing. It is a five-axis three-linkage: that is, two rotating shafts are rotated and positioned, and only three axes can be simultaneously processed. This five-axis machine tool commonly known as 3+2 mode can also be understood as a fake five-axis.
The current form of five-axis ptj cnc tools
In the mechanical design of 5-axis machining centers, machine tool manufacturers have always been unremittingly committed to developing new motion modes to meet various requirements. In summary, there are various types of five-axis machine tools currently on the market. Although there are various mechanical structures, there are mainly the following forms:
Two rotating coordinates directly control the direction of the tool axis (double swing head form)
The two coordinate axes are at the top of the tool,
But the rotation axis is not perpendicular to the linear axis (pitch type swing head type)
Two rotating coordinates directly control the rotation of the space (double turntable form)
The two coordinate axes are on the worktable,
But the rotation axis is not perpendicular to the linear axis (pitch type worktable)
Two rotating coordinates act on the tool one,
One acts on the workpiece (one swing and one turn)
Having seen these five-axis machine tools, I believe we should understand what and how the five-axis machine is moving.
Difficulties and resistances in developing five-axis CNC technology
Everyone has long recognized the superiority and importance of five-axis CNC technology. But so far, the application of five-axis CNC technology is still limited to a few well-funded departments, and there are still unresolved problems.
The editor below has collected some difficulties and resistances to see if they correspond to your situation?
Five-axis CNC programming is abstract and difficult to operate
This is a headache that every traditional CNC china turning feels deeply. Three-axis machine tools have only linear coordinate axes, while five-axis CNC machine tools have various structures; the same NC code can achieve the same processing effect on different three-axis CNC machine tools, but the NC code of a five-axis machine tool cannot be applied All types of five-axis machine tools. In addition to linear motion, CNC programming must also coordinate related calculations of rotational motion, such as rotation angle stroke inspection, non-linear error check, tool rotation calculation, etc. The amount of information processed is very large, and CNC programming is extremely abstract.
The operation of five-axis CNC machining is closely related to programming skills. If the user adds special functions to the machine tool, the programming and operation will be more complicated. Only by repeated practice, programming and operating personnel can master the necessary knowledge and skills. The lack of experienced programming and operators is a major obstacle to the popularization of five-axis CNC technology.
Many domestic manufacturers have purchased five-axis CNC machine tools from abroad. Due to inadequate technical training and services, it is difficult to realize the inherent functions of five-axis CNC machine tools, and the utilization rate of the machine tools is very low. In many cases, it is better to use three-axis machine tools.
Very strict requirements for NC interpolation controller and servo drive system
The movement of a five-axis machine tool is a combination of five coordinate axis movements. The addition of rotating coordinates will not only increase the burden of interpolation calculations, but also the small errors of the rotating coordinates will greatly reduce the processing accuracy. Therefore, the controller is required to have higher arithmetic accuracy.
The motion characteristics of the five-axis machine tool require the servo drive system to have good dynamic characteristics and a large speed range.
NC program verification of five-axis CNC is particularly important
To improve the efficiency of mechanical processing, it is urgent to eliminate the traditional “trial cutting method” verification method. In five-axis CNC machining, the verification of NC programs has also become very important, because workpieces processed by five-axis CNC machine tools are usually very expensive, and collisions are common problems in five-axis CNC machining: the tool cuts into the workpiece; It collides with the workpiece at a very high speed; the tool collides with the machine tool, fixture and other equipment within the processing range; the moving part on the machine tool collides with the fixed part or the workpiece. In five-axis CNC, collisions are difficult to predict, and the calibration program must comprehensively analyze the machine tool kinematics and control system.
If the CAM system detects an error, the tool path can be processed immediately; but if an NC program error is found during the machining process, the tool path cannot be modified directly as in the three-axis CNC. On a three-axis machine tool, the machine operator can directly modify the tool radius and other parameters. In five-axis machining, the situation is not so simple, because the change of the tool size and position has a direct impact on the subsequent rotary motion trajectory.
Tool radius compensation
In the 5-axis NC program, the tool length compensation function is still valid, but the tool radius compensation is invalid. When using cylindrical milling cutters for contact forming milling, different programs need to be programmed for cutters of different diameters. The current popular CNC systems are unable to complete the tool radius compensation, because the ISO file does not provide enough data to recalculate the tool position. The user needs to change the tool frequently or adjust the exact size of the tool when performing CNC machining. According to the normal processing procedure, the tool path should be sent back to the CAM system for recalculation. As a result, the efficiency of the entire processing process is very low.
In response to this problem, Norwegian researchers are developing a temporary solution called LCOPS (Low Cost Optimized Production Strategy). The data required for tool path correction is sent to the CAM system by the CNC application, and the calculated tool path is directly sent to the controller. LCOPS requires a third party to provide CAM software, which can be directly connected to the CNC machine tool, during which the CAM system file is transmitted instead of the ISO code. The final solution to this problem depends on the introduction of a new generation of CNC control system, which can recognize workpiece model files in common formats (such as STEP, etc.) or CAD system files.
Post processor
The difference between a five-axis machine tool and a three-axis machine tool is that it also has two rotating coordinates. The tool position is transformed from the workpiece coordinate system to the machine tool coordinate system, and several coordinate transformations are required in the middle. Using the popular post processor generator on the market, you only need to input the basic parameters of the machine tool to generate the post processor of the three-axis CNC machine tool. For five-axis CNC machining tools, there are currently only some improved post processors. The post processor of the five-axis CNC machine tool has yet to be further developed.
When three-axis linkage, the position of the workpiece origin on the machine tool table does not need to be considered in the tool trajectory, and the post processor can automatically process the relationship between the workpiece coordinate system and the machine coordinate system. For five-axis linkage, for example, when machining on a horizontal milling machine with five-axis linkage of X, Y, Z, B, and C, the position and size of the workpiece on the C turntable and the position and size between the B and C turntables are generated when the tool path is generated Must be considered. Workers usually spend a lot of time dealing with these positional relationships when clamping workpieces. If the post-processor can process these data, the installation of the workpiece and the processing of the tool path will be greatly simplified; just clamp the workpiece on the worktable, measure the position and direction of the workpiece coordinate system, and input these data into the post-processing After processing the tool path, the appropriate NC program can be obtained.plastic machining
Non-linear errors and singularity problems
Due to the introduction of rotating coordinates, the kinematics of a five-axis CNC machine tool is much more complicated than that of a three-axis machine tool. The first problem related to rotation is nonlinear error. The non-linear error should be attributed to the programming error, which can be controlled by reducing the step distance. In the pre-calculation stage, the programmer cannot know the size of the non-linear error. Only after the cnc machining tool program is generated by the post-processor can the non-linear error be calculated. Tool path linearization can solve this problem. Some control systems can linearize the tool trajectory while processing, but it is usually linearized in the post processor.
Another problem caused by the rotating shaft is singularity. If the singular point is at the extreme position of the rotating shaft, a small oscillation near the singular point will cause the rotating shaft to flip by 180°, which is quite dangerous.
Requirements for CAD/ CAM system
For the operation of pentahedron processing, the user must rely on a mature CAD/CAM system, and must have experienced programmers to operate the CAD/CAM system.
Large investment in the purchase of machine tools
There was a huge price gap between five-axis machine tools and three-axis machine tools in the past. Now, the addition of a rotating axis to a three-axis machine tool is basically the price of an ordinary three-axis machine tool, which can realize the functions of a multi-axis machine tool. At the same time, the price of a five-axis machine tool is only 30% to 50% higher than the price of a three-axis machine tool.https://numerical-control.com/
In addition to the investment in the machine tool itself, the CAD/CAM system software and post-processor must also be upgraded to adapt to the requirements of five-axis machining; the verification program must be upgraded to enable it to simulate the entire machine tool .

The editor has encountered an unexpected error. Attempt Recovery Copy Post Text

Vibration of the knife in the CNC turning process is very common, and it is generally manifested as: uneven and rough surface of the part, accompanied by harsh sounds, unstable dimensions, etc… In order to better solve these common problems, we have to understand the source of this problem: resonance point On Wikipedia, it is explained like this: The resonance point (acoustics is called resonance) refers to the situation when a physical system vibrates with a greater amplitude than other frequencies at a specific frequency; these specific frequencies are called resonance frequencies, which are very small. Periodic driving force can CNC machining huge vibrations because the system stores vibration energy as damping. There is a very small chance that the resonance frequency is approximately equal to the natural frequency or natural frequency of the system, which is the frequency during free oscillation. In a normal cutting environment, the rotation speed of the spindle remains stable, and the frequency and amplitude of vibration are also maintained within an acceptable range. As the vibration frequency increases, the vibration amplitude will increase accordingly. The most obvious example is: In some intermittent CNC turning processing environments, as the spindle speed increases, not only will it not increase the surface roughness of the workpiece, but on the contrary, it will make the surface rougher. For example, increasing the speed is equivalent to increasing the frequency of vibration; a rough surface means that when the tool touches the workpiece, the contact point on the circumference has a slight change, and it also shows that the amplitude of the vibration has been amplified. This does not mean that increasing the frequency of the vibration will definitely increase the amplitude of the vibration. Only this result will be more obvious when the resonance is excited. Essentially, in order to ensure the parts have a stable roughness, it is necessary to maintain a stable vibration amplitude. Keep the generated vibration away from the resonance frequency and no longer increase the amplitude of the vibration. If forced to shorten the time for resonance to occur, it will also have a positive effect on controlling the amplitude of vibration. The unique function of Haas lathe, SSV (Spindle Speed ​​Floating), uses the changing speed to shorten the time of resonance, thereby achieving the purpose of improving roughness. Continue reading The editor has encountered an unexpected error. Attempt Recovery Copy Post Text

How laser technology is subverting the steel pipe cutting industry

Material cutting is currently a subdivision of laser applications in my country, most of which are laser cutting applications for medium and high-power metal materials. Mainly include stainless steel, carbon steel, copper, aluminum and other daily major metals, of which stainless steel and carbon steel are mostly. Continue reading How laser technology is subverting the steel pipe cutting industry

Have you heard of friction welding of wood?

Welding is defined as the manufacturing process and technology of joining metals or other thermoplastic materials (such as plastics) by heating, high temperature, or high pressure. In fact, in our impression, the object of welding is generally metal. How to weld wood that is afraid of high temperatures? Continue reading Have you heard of friction welding of wood?

What are the factors that affect the quality of laser welding?

There are many factors that affect the quality of laser welding. Some of them are very unstable. How to correctly set and control these parameters in the high-speed continuous laser welding process, and control them in the appropriate range, so as to ensure the welding quality. Continue reading What are the factors that affect the quality of laser welding?

The knowledge that CNC engraving and machining must learn

COMPUTER NUMERICAL CONTROL engraving machine is good at fine machining of small tools, with the ability of milling, grinding, drilling and high-speed tapping. It is widely used in 3C industry, mold industry, medical industry and other fields. This article collects common questions about CNC engraving.1 . What is the main difference between COMPUTER NUMERICAL CONTROL engraving and CNC milling?
Both CNC engraving and CNC milling use the principle of milling. The main difference lies in the diameter of the tool used. Among them, the commonly used tool diameter for cnc manufac turings is 6-40 mm, while the device diameter intended for CNC engraving is 0. 2-3 millimeter.
2 . Does CNC milling can only be used to get rough engineering and CNC engraving can only just be utilized pertaining to finishing?
Before answering this question, let us first understand the concept of the process. The rough machining process requires a large amount of machining, but the finishing machining amount is usually small , so some people habitually regard tough machining as “heavy cutting” and finishing as “light cutting”. In fact, rough engineering, semi-finishing, and finishing are process concepts, which represent different processing stages. Therefore , the accurate answer to this kind of question is that CNC milling can be used for heavy cutting or light cutting, while COMPUTER NUMERICAL CONTROL engraving can only be used meant for light trimming.

  1. Can CNC decoration be utilized designed for rough machining of steel materials?
    To judge whether CNC engraving can process a certain material, it mainly depends on the size of the tool that can be used. The application used in COMPUTER NUMERICAL CONTROL engraving determines its maximum cutting capacity. If the mildew shape allows the use of tools with a diameter of more than 6 mm, it is strongly recommended to use CNC milling first, and then utilize the engraving method to remove the remaining material.
  2. Can the CNC machining center add a speed-increasing head to complete the decoration process?
    Can not finish this. This kind of product appeared at the exhibition 2 years ago, but it was unable to complete the engraving procedure. The main reason is that the design from the CNC machining middle takes into account its own range of equipment, and the overall structure is not suitable for engraving processing. The main reason for this wrong idea is that they mistakenly regarded the high-speed electric spindle as the only feature in the engraving machine.
  3. CNC machininged can use tools with a small diameter. Can it replace EDM?
    Cannot be replaced. Although decoration has narrowed the range of tool diameters for milling, small molds that could only be processed by EDM can now be processed by engraving. However , the length/diameter ratio of the decoration tool is generally around 5: 1 . When using small-diameter equipment, only very shallow cavities can be machined, and there is almost no cutting force in the EDM machining.. As long as the electrode could be manufactured, the cavity can be machined.
    six. What are the primary factors affecting engraving control?
    Machining is definitely a relatively complex process, and there are many factors that affect it, mainly including the following points: equipment tool characteristics, cutting tools, control systems, material features, processing technology, auxiliary fixtures and surrounding environment.
  4. What are the requirements for the control system of CNC turning?
    CNC engraving processing is milling processing first, so the control system must have the ability to control milling handling. For the processing of small equipment, the feedforward function must be provided at the same time to reduce the speed of the path in advance to lessen the breaking frequency of small tools. At the same time, it is necessary to increase the cutting speed in a comparatively smooth path section to improve the efficiency of engraving processing.
  5. What qualities of the materials will impact processing?
    The primary factors influencing the decoration performance with the material are the material type, hardness and toughness. The material category includes metallic materials and non-metallic materials. In general, the greater the hardness, the worse the processability, and the higher the viscosity, the worse the processability. The more impurities, the worse the processability, the greater the hardness of the particles inside the material, and the worse the processability. A general standard is: the higher the carbon content, the worse the workability, the bigger the alloy content, the worse the workability, the higher the content of non-metal elements, the better the workability ( however the nonmetal content in general materials is strictly controlled of).
  6. Which materials are ideal for engraving processing?
    nonmetallic materials suitable for engraving include organic glass, resin, wood, etc ., and nonmetallic materials that are not ideal for decoration include natural marble and glass. Metal materials suitable for engraving include copper, aluminum, and mild steel with a hardness less than HRC40. Metallic materials not ideal for engraving include quenched steel.
  7. What impact does the instrument itself have on digesting, and how?
    The tool elements that affect the engraving process include the software material, geometric parameters, and grinding technology. The program material found in the decoration process can be cemented carbide material, which is a powder alloy. The main performance index that determines the material performance is the average diameter of the powder. The smaller the diameter, the more wear-resistant the tool, and the bigger the durability of the tool. For more  knowledge, pay attention to the WeChat public account (CNC programming teaching) to receive the tutorial. The sharpness on the tool mainly affects the cutting force. The sharper the tool, the smaller the cutting pressure, the smoother the control, and the higher the surface quality, but the lower the durability of the device. Therefore , different sharpness should be selected when processing diverse materials. When processing relatively soft and sticky components, the slicing tool needs to be sharper. When the processing material is harder, the sharpness ought to be reduced to boost the durability of the cutting application. But it should not be too blunt, otherwise the cutting push will be too large, which will impact the processing. The key factor in the grinding of this tool may be the mesh number of the fine grinding wheel. A high-mesh grinding steering wheel can grind a more delicate cutting edge, which can effectively improve the durability of the tool. A high-mesh grinding wheel can grind a smoother flank surface and enhance the reducing surface top quality.
  8. What is the instrument life formula?
    Tool life is mainly the tool life in the finalizing of metal materials. The empirical formula is: (T is the software life, CT is the life parameter, VC may be the cutting linear speed, f is the amount of knife per revolution, and P may be the depth of your knife). Included in this, the lowering linear speed is the biggest influence on tool existence. In addition, program radial runout, tool milling quality, tool material and coating, and coolant will also affect device durability.
  9. How to protect the engraving machine application during handling?
    1) Protect the instrument setter from excessive oil erosion.
    2) Pay attention to the control of flying chips. Flying chips are very harmful to the machine tool. Flying into the electric control cabinet will cause a short circuit. Soaring in to the guide rail will reduce the life belonging to the lead screw and the guideline rail. Consequently , the device software must be The main part of the seal is well sealed.
    3) When moving the lamp, do not pull the light cap, it is easy to damage the lamp cap.
    4) During the machining method, usually do not observe near the lowering area to avoid flying chips to injure your eyes. When the spindle motor is certainly rotating, it really is forbidden to perform any operations on the work surface.
    5) When opening and closing the door of the machine program, do not open and close it violently. Through the finishing process, the shock and vibration during the door opening process may cause the machined surface to have knife marks.
    6) The spindle velocity should be set, and start processing. Otherwise, because the spindle starts to rotate slowly, it will start producing without reaching the desired rate, causing the motor to suffocate.
    7) It really is forbidden to place any tools or perhaps workpieces on the beam of the device tool.
    8) It is strictly unacceptable to put magnetic tools such as magnetic suction cups and dial indicator holders on the electric powered control cupboard, otherwise the display will be damaged.
  10. There is a phenomenon of holding back through the processing of a new device, and the processing is very laborious. What parameters need to be adjusted at this time?
    The reason why the machining is very laborious is that the power and torque of the spindle cannot withstand the current clipping amount. A reasonable approach is to remake the road to reduce the depth within the tool, the depth for the groove, and the amount of trimming. If the entire processing time is significantly less than 30 minutes, you can also adjust the cutting acceleration to improve the cutting state.
  11. What’s the role of cutting fluid?
    Focus on cooling oil for metal processing. The role of the cooling system is to take away the trimming heat and flying potato chips, and play a role in lubricating the refinement. The coolant will take away the cutting heat, reduce the heat transferred to the tool and the motor, and increase their service life. Take away soaring chips in order to avoid secondary cutting. Lubrication can easily decrease the slicing force and make the developing more stable. In the copper processing, the selection of oil-based reducing fluid can certainly improve the surface quality.
  12. What are the stages of tool wear?
    Tool wear is divided into three stages: initial wear, normal put on, and sharp wear. In the initial stage of use, the main cause of tool put on is that the temperature of the tool is low, and the optimal cutting temperature is not reached. At this time, the wear from the tool is mainly abrasive have on. Such don has a greater impact on the tool. More knowledge of COMPUTER NUMERICAL CONTROL programming Pay attention to the WeChat public account (edm engineering teaching) to get the tutorial, you can easily cause the application to collapse. This stage is a very dangerous level. If it is not really handled well, it may directly cause the tool to collapse and fail. When the tool passes the original wear period, the lowering temperature in the tool reaches a particular value. This is the primary wear is diffusion dress in, and its function is principally to cause local spalling. Therefore , the use is smaller and slower. When the dress yourself in reaches a certain level, the tool fails and enters a period of rapid be dressed in.
  13. Why do tools have to be run-in and how to run-in?
    We mentioned above that the tool is easy to collapse in the initial put on stage. In order to avoid the phenomenon of instrument collapse, we must run-in the tool. The cutting heat of the instrument is gradually increased to a reasonable temperature. It really is verified simply by experiments the same refinement parameters are used for comparison. It can be seen that after running-in, the tool lifestyle has increased by simply more than 2 times.
    The method of running-in is usually to lessen the feed rate by half while maintaining an acceptable spindle swiftness, and the developing time is about 5-10 minutes. Take a small value once processing soft materials, and take a large value when ever processing hard metals.

    http://plastic-mold.cn/
  14. How exactly to judge the severe wear with the tool?
    The technique of judging severe software wear is definitely:
    1) Once listening to the processed sound, there is a harsh call;
    2) Listening to the sound of the main shaft, the primary shaft is obviously holding back;
    3) It feels that the vibration increases during processing, and the machine program spindle appears obvious vibration;
    4) Looking at the application effect, the knives around the processed bottom surface are sometimes good and sometimes bad ( if it is like this at the beginning, it means the fact that depth on the knife is too deep).
  15. When should I change the tool?
    We should change the tool at about 2/3 of this tool your life limit. For example, the tool is severely worn in 60 minutes, the next time you process, you should begin the device change in 40 minutes, and develop the habit of changing the application regularly.
  16. Can seriously worn equipment continue to be processed?
    After the device is significantly worn, the cutting power could be increased to 3 times the normal. The cutting drive has a great influence within the service life of your spindle electrode. The lifespan of the spindle motor as well as the force will be inversely proportional to the third power.https://beryllium-copper.com/

     

    For instance, when the trimming force can be increased by three times, application for 10 minutes is equivalent to the spindle using 10*33=270 minutes under normal conditions.

  17. How to determine the protruding length of the tool during roughing?
    The protruding amount of the tool is as short as possible. However , in actual processing, if it’s too short, the length of the instrument must be modified frequently, that may affect the absorbing efficiency too much. So how should the protruding length of the program be controlled in real processing? The principle is as follows: a φ3 size cutter bar can be prepared normally if it protrudes 5mm. The φ4 diameter instrument bar could be processed normally if it protrudes 7mm. The φ6 dimension tool club can be highly processed normally if this protrudes 10mm. Try to go below these values the moment loading the knife.https://sandcasting.org/ If the space of the upper knife is certainly greater than the above value, try to control the depth belonging to the machining when the tool is normally worn. This is a bit difficult to grasp and requires more exercise.
  18. What must i do if the software breaks suddenly during taking?
    1) Stop processing and check the existing serial quantity of processing.
    2) Check whether there is a broken knife body at the broken knife, and take it out if there is one.
    3) Analyze the reasons just for tool breakage. This is actually the most important thing. https://www.wondercopper.com/Why is the program broken? If we want to analyze, we should evaluate the various factors that affect the processing mentioned previously. But the reason for the broken tool is that the force for the tool all of a sudden increases. Or the path problem, or the programme jitter is too big, or the material has lumps, or maybe the spindle motor speed is incorrect.
    4) After analysis, change the tool for dealing. If the path is not changed, the original serial number should be advanced one serial number for accomplishment. At the moment, you must focus on lower the feed rate. One is because the broken application is hardened severely, plus the other is the tool running-in.

What should I carry out if clear plastic injection molding is unfinished?

This is a frequently encountered problem, but it is also relatively easy to solve. When it is really not solved by technological means, it can be improved from the design and manufacture of molds, which can generally be solved. Continue reading What should I carry out if clear plastic injection molding is unfinished?

What problems can CNC lathe exist?

In the processing industry, in order to avoid mistakes, in addition to strengthening training, we began to develop a scientific management process, but even this is not to avoid mistakes. Among them, cnc computer lathe processing has achieved a dominant position in the industry, but there are many problems in production, for example, the surface color of some products is not uniform, and at the time of production, there will be delays due to the large number of orders. .

How can the above phenomenon be avoided, cnc lathe processing in the face of these situations, but also began to adjust the company’s corresponding management. In order to improve efficiency, equipment has also been introduced. At the same time as the equipment arrives, it has begun to strengthen personnel training. After all, many of these equipments are foreign languages. If you do not master the relevant language, it is very difficult to control. Of course, in addition to these, in order to minimize the occurrence of defective products, it has also begun to strengthen the monitoring of the entire production process, and even set up this test procedure in the production line.

There will be a great deal of interception of any product that may be defective. It is precisely because after the improvement of the management process, cnc computer lathe processing can fully balance efficiency and quality, and the possibility of embarrassment is also reduced a lot.

PTJ (MINGHE) Factory also pays great attention to product quality when processing products. After all, the quality of the products also affects the development of the company. Therefore, it is recommended that you choose PTJ. After all, it is large and large, and it is also very good in quality.