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How to extend tool life?

Update:30 Aug 2017
Summary:

   To extend the life of the tool, you need a reasonabl […]

   To extend the life of the tool, you need a reasonable choice of metal processing fluid type and optimize the processing methods, especially for difficult to process materials even more so. Cutting the hard material is difficult to cut high-quality cutting fluid, the cost of this cutting fluid is relatively expensive. However, in the cutting process, difficult to process the material will often have a negative impact on the life of the tool, so choose the right cutting fluid, effectively extend the tool life, reduce processing costs is very necessary. The reason for the damage to the tool is the cutting force and the cutting heat, so no matter what kind of processing method is used, the fundamental purpose is to minimize the cutting point of the cutting part and parts of the processing area of the temperature, to prevent the surface hardened parts And the tip temperature is too high, increase the cooling area, control the cutting force.
   Solution:
   1, the appropriate control of cutting force and cutting speed
   Proper control of the cutting force and cutting speed of the tool is also one of the most effective means to reduce the temperature of the working area and prolong the service life of the cutting fluid. In the processing of difficult processing materials, the general use of fine grinding tool edge, cutting depth and cutting width should not be too large. Select the cutting line speed, according to the different types of materials, parts and processing equipment and other factors to be considered. In general, if the processing material is nickel-based alloy, the line speed should be controlled at 20 to 50 meters per minute; the processing material is titanium alloy, the linear velocity should be controlled at 30 to 110 meters per minute; the processing material is PH stainless steel, It should be controlled in the range of 50 to 120 meters per minute.
   2, choose a reasonable cutting method
   For difficult to process materials, choose a different cutting method for the damage of the cutting fluid is very different. Regardless of which cutting method is chosen, the principle is the same, that is, as much as possible to reduce the cutting force, reduce the cutting zone temperature. The use of cycloidal cutting method can minimize the cutting area, so that the actual cutting angle of cutting fluid to achieve the minimum, thus extending the cutting time of each tooth cutting tool to reduce the cutting temperature; the use of spiral interpolation method can make each tooth cutting volume is relatively uniform , To avoid the cutting force concentrated in a few teeth and to speed up the wear and tear, this effect is particularly evident in the corner; and the use of large feed cutting method to a smaller depth of cut, the larger feed effectively reduce the cutting Force, resulting in the processing of the smallest cutting heat, the lowest processing temperature.
   3, to ensure timely and effective chip breaking
   In the metal processing, there will be a large number of cutting heat generated in the cutting chip, if you can control the chip length, to ensure timely and effective chip breakage, you can make this part of the cutting heat is taken away the chip, so chip is controlled cutting temperature An effective way. In the processing of difficult to process the material, especially in the roughing process, in the processing system under the premise of the rigid allowed, should try to make it in the whole process of chip breaking. At the same time the use of good settling performance cutting fluid, the cutting chip discharge, do not let the cutting chip and the workpiece surface friction.

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