In the modern metal processing field, although the cost of the tool machining production costs only a small part of the machine shop but a direct impact on the overall processing efficiency. Users of the tool performance with the increasing requirement for tools and rapid development,glue stick both in accuracy and in terms of the complexity of the tool shapes have a higher demand.
So as a tool maker - tool grinder how to keep up with the pace of development of the tool do? Each machine tool manufacturers have unique insights.
To maintain the accuracy of and intelligent software are indispensable.
Mr. Zhang Ming: China's tool is in a rising trend in demand,glue gun especially in previously high-end market is not large share of the domestic cutting tool business, the current growth momentum is also very fast. Therefore, for the manufacture of these high-end tool grinding machine tool demand is also much greater. As a tool grinding machine manufacturers, tool manufacturers know how to use our tools to create the tool they need is our primary responsibility. Schleifring mainly through the following two aspects to meet customer needs: first, to meet accuracy; the other is the efficient processing of complex tool shapes.
Users have become increasingly demanding products, including machine noise, stability and reliability requirements, the final analysis, the tool is actually a precision requirements. But the emphasis here is "precision" is not the precision of a knife on the machine tool manufacturers, the "accuracy" represents the accuracy of preservation, is to ensure a period of time created by the tool are the same precision, Even with fluctuations, but also in a very small range.
Accuracy is guaranteed by the three, the first is the mechanical structure of the machine. In the initial stage of the design must consider how to ensure the mechanical precision machine tools, such as Walter's Helitronic products, bed with marble manufacturing, not only the ability to very strong vibration, heat distortion is very small. Which Helitronic Basic and Helitronic Power cast iron bed, can guarantee absolutely still in the process machine. In addition, the series also features a special gantry design, compared to the ordinary high column of the tool grinder, the product stability and rigidity have been increased dramatically.
Second, the choice of the spindle and drive components to ensure the accuracy of the machine is also very important. We use the spindle are relatively thick, rigid to ensure good use of the screw is relatively large, we could reduce the wear and tear. Finally, better thermal performance of the machine, can not produce distortion and deformation of machine components. Rapid rise in oil temperature will high-speed processing, how to avoid contact with the oil is critical parts of the thermal deformation. Schleifring mechanical structure through a rational design of the part affected by temperature to reach a balance, the table on the part of the connection with the machine so that the workpiece flexibility in part to avoid contact with high temperature.
In addition to ensuring the accuracy outside the complex shape of the processing tool is a challenge. Renovation of the current tool vendors faster and faster, more complex product shapes, which need a flexible software to keep up the high pace of their development. "Tool Studio" is such a software.
"Tool Studio" covers a large database, users do not need to create your own you can choose the shape tool available in all markets, simply enter the size, the system can automatically generate with ease. We described the software is "WYSIWYG", because it has 3D real-time simulation capabilities, the tool not only to meet regular production, but also can simulate any part geometry processing. Programming tool to display the shape is to see the way out of the upcoming process can also be programmed in the investigation process if there is the possibility of collision, which is integrated with the machine itself, rather than a separate computer simulation The. Smart-oriented programming features of the tool, even for people who are not familiar with programming you can use handy. "Tool Studio" provide customers a better, more simple, more secure solution.
Many ways to ensure accuracy.
Mr. Tang Xinkang: High speed milling cutter in the metal processing industry, more and more widely, the corresponding precision of the tool is also increasing. Angke attaches great importance to the company through continuous technological innovation to improve the precision tool grinding and processing efficiencies. Precision machining tool in improving this area in recent years mainly in the following several new technologies.
1. For the shape and contours of high precision tools, precision machine Angke launched an online measurement system. The system uses a 300-fold pixel CCD camera, detection accuracy of up to 2μ, the actual grinding of the tool size and tool design theory outline contour overlap, we could find any point of the error. Tolerance can also outline the scope of theory, automatically making it up.
So doing reduce the outside measurement error caused by the two cards installed, saving the machine outside the detection time. On the other hand, the general external grinding machine if the test is applied to compensate for it, often only through the wheel for radial or axial size of making it up, and the profile section to compensate for the actual size is different, can not be met by way of compensation in place of traditional . Angke is not a simple compensation, but for various different programs points to automatically compensate for the deviation, can eliminate the wheel and angle error circle arc machine positioning errors and other adverse factors integrated error.
2. Online wheel balancing equipment, high-precision cutting tools for machining, grinding wheel balancing their performance will affect the dimensional accuracy and surface quality of the tool. Even if an independent balancing of grinding wheel at a reasonable range of indicators is not enough, because a set of wheels will cause the cumulative amount of eccentricity in high-speed grinding of small diameter and surface polishing tool will produce a slight vibration. Not only can not control the accuracy of size, the error on the cutting edge of tool life and quality of the product is processed there will be damage. Angke by machine grinding wheel balancing system that can detect grinding wheels comprehensive balancing work performance, including the size and direction of eccentricity, and then the software prompts grinding wheels with locking nuts where to add weight screws. Through this very simple and effective method can greatly reduce the grinding wheels of the eccentricity.
3. MX7 launch. Complete a variety of traditional tools grinding machining 5 axis enough, but MX7 also increased the Q-axis, the "precision grinding spindle axis indexing and memory." Many customers to reduce the error of the two installed cards, often carried out in the machine wheel dressing and balancing, to be followed to improve grinding wheels into the wheel database, then the robot will be the next group and then back into the grinding wheel spindle, then there may be grinding spindle and the direction and angle grinding wheels will be different, according to ISO standards in the HSK interface standard, repeat accuracy of the original beat error 2μ, different angles will be set back into the grinding wheel spindle interface, then produced the original beat and grinding wheel Balancing performance is completely different.
4. Grinder clamping system. Regardless of the accuracy of a tall factory handle clamping system, the use of a period of time so that the jacket will wear the original beat increases, will affect the tool life and accuracy of parts to be machined. For this situation, Angke "floating support device", by the United States Arobotec technology, according to the diameter of cutting tools to regulate, adjust the range of 8 ~ 10mm. Floating bushing with hydraulic sensors, supported by three pieces, without manual adjustment. It can reduce the tool of the original beat to 4 ~ 5μ below, while eliminating the traditional fixed support frame tedious calibration and set the time.
PCD and PCBN cutting tools for tool grinding requirements.
Mr. Shu Zhiyong: most of the domestic diamond tool grinding machines are designed with the following two characteristics: First, PCBN and PCD tool sharpening at the same time, taking into account natural diamond tools; the second is mainly used for grinding of superhard turning tools and boring Welding also take into account the disc type and the shaft tool.
Now, with the rapid development of technology and market, PCBN and PCD cutting tool has been widely used. PCD and PCBN cutting tools market in the grinding efficiency and grinding equipment, put forward a very high demand, mainly as follows.
1. Indexable inserts to increase the proportion of grinding, requires special equipment and strong, simple structure and rigidity. With the deepening division of labor, more than 80% of customers are using the equipment to mass-produce the same type of tool, that is, PCNB, PCD indexable or alloy, welding turning tools and so on. The demand for a single, machine tool structure can be simplified, equipment to be greatly enhanced rigidity. This not only reduces equipment costs, but also for efficient production and laid a solid foundation.
2. Assisted the main part of the time - time requirements on the tool significantly reduced. The circular blade is formed by rotating table, the tool to adjust the arc center to the axis of rotation coincides with the table (ie, move the knife) is a prerequisite for grinding, and the "action of the knife" through the grinding tool the whole process, and continue to repeat, this is the traditional tools can not get rid of the root causes of manual operation.
3. Requires convenient and reliable operation, try not to rely on the operator's manual skills. Natural diamond tools for grinding, the introduction of the traditional tools of "soft feed" and "constant grind," the process, the fragility of the natural diamond tools have a very strong "Let the knife" protective effect. The traditional equipment used way into the knife cylinder to achieve this effect, so that PCD has largely at the expense of efficiency and PCNB grinding tool. In addition, due to lack of precision machinery manufacturing, so this machine is very unstable, very strong manual skills needed to perform their specialty.
Deming is satisfied that the use of modern high-tech companies a means to solve the tool sharpening key technical problems that exist in the traditional BT-150A type diamond tool grinding machines, based on the development of BT-150B (electric type), BT-150C (economic) and BT-150D (Smart) Series blade grinder, the basic finding ways to solve these problems.