Choosing the right tool shank is the key to control the cost

Because of the different clamping ways of the machine tool, the size accuracy, surface quality, the time of replacing and the tool wear will be affected. Therefore, the tool shank has a direct impact on the quality of the workpiece and the processing cost. In the cutting process, the tool shank is the key interface between the tool and the machine tool. In various processing conditions, the choice of the right handle will affect a number of factors, such as: dimensional accuracy, surface quality, replacement time and tool wear, which ultimately affect the quality and cost of the processed workpiece. As there is processing different occasions, the market does not need a set of CNC knife handle can be applied to all processing. Therefore, with the development of processing technology, SCHUNK thirty years to develop a variety of different high-precision knife handle system. With these sets of handle, you can meet the needs of the user a variety of cutting tasks. The application of industry from the micro machining to the metal cutting processing industry, the high speed electronic clock (HPC/HSC) full range; both handle high value and high precision, and cheap and suitable for large cutting machining tool. The clamping rotary precision determines the size precision high precision machining tool, such as TENDO static expansion toolholder and TRIBOS stress locking tool in manufacturing structure size on the high assurance, through a series of dynamic balance calibration, a rotary clamp to achieve high precision. With this feature not only can improve the quality of the workpiece, but also greatly reduce the processing costs. The processing cost is obviously lower than the traditional machining cost, which is due to the use of high precision tool shank to prolong the service life of the cutter. Compared with the traditional spring handle, TENDO static expansion clamping technology (Figure 2) and TRIBOS stress locking clamping technology (Figure 3) only because of reducing tool wear, can save up to 27%. High precision SCHUNK system has to handle high precision rotary clamp, the user can use in the size precision of processing precision of the workpiece at very high. Although the heat shrinkable tool holder and the high precision spring handle can also reach a higher clamping rotation accuracy, there are still differences in the clamping technology. Experimental results show that the pyrocondensation shank because of the material will gradually lose the clamping precision under influence of heat expansion; and rely on the static pressure oil cavity deformation of TENDO under normal temperature or material deformation and stress of clamping TRIBOS shank after tool change times, still can keep the radial rotation beating does not exceed 0.003mm. In vibration damping, numerical SCHUNK tool holder system reflects very wide adaptability. One of the TENDO static expansion handle and the TRIBOS-R type stress locking tool handle is particularly prominent. The TENDO static expansion handle is clamped by a symmetrical oil cavity wall, and the pressure bolt is uniformly transferred to each part of the oil cavity through a six angle wrench. The inner wall of the oil chamber is pressed uniformly and symmetrically to the direction of the axis. With each clamping and loosening, compression bolts are fixed to the same position, to ensure the accuracy of repeated clamping requirements. Because the vibration damping of the oil is greater than that of the steel, the TENDO handle has a very high damping property. In the same way, the TRIBOS-R type stress locking type knife handle is filled with the plastic damping material with the cavity structure, and the utility model has the similar damping characteristics, so as to achieve the extremely quiet processing effect. The SINO universal shank has a similar advantage because of the lining of the plastic material. That experiments, such as the user selected clamping technology with vibration damping, the investment is worth it. Because of the damping effect, the cutting state of the cutting tool is improved, the cutter is well protected, and the service life is prolonged. As shown in the experimental results, the tool life can be extended by up to 47% (Figure 4) due to the improved vibration characteristics. At the same time, users can also get a better surface quality of the workpiece. Another advantage of vibration damping characteristics of with handle is its impact on the main shaft of the device. If the damping is relatively weak, the vibration will be transmitted directly to the spindle, and the tool with vibration damping characteristics will play a buffer role. In this way, the utility model can not only protect the main components of the main shaft and the equipment, but also prolong the service life of the main shaft. In cutting task large quantities, high radial force will affect the hilt. If you want to achieve a larger amount of cutting in a short time, it is recommended to adopt this system can withstand radial force. SINO-R strong knife handle, TRIBOS-R handle and CELCIO heat shrinkable technology are all good choices. These kinds of tool handle systems have high radial stiffness, which can be processed smoothly under the condition of large cutting capacity. The first two systems also have excellent damping characteristics. Tool change time change faster for shorter often need to dress up for tool customers, the time change in the selection of suitable handle also has an important influence. TENDO hydraulic knife handle and SINO universal handle only a simple six angle wrench or crescent wrench, you can replace the tool in the 30s. It does not require the use of peripheral equipment, not only a short time, and no extra cost. While the heat exchanger of the knife handle to replace the need for special heat shrinkable equipment, the purchase price of about 10000 euros. In contrast to other tool clamping techniques, the longest time required to heat the tool shank, including the cooling time required for the cooling of the tool holder, requires 10min. This is a very bad thing in a lot of changes. In machining workpiece is smaller or