An important indicator of deep hole processing -- Deviation
In the deep hole processing industry, an important indicator of deep hole is deviation
What are the factors that affect the deviation?
1, first consider the movement form adopted by deep hole drilling. In the process of deep hole processing, the best of the deviation control of the workpiece is the rotation of the workpiece, the tool rotation and the double rotation of the feed movement; the second is the rotation of the workpiece and the single rotation of the feed movement: the worst is the effect relative to the gun drilling. The workpiece is not moved, and the cutter rotates to feed again.
2. Assembly accuracy of guide sleeve has the most important influence on hole deflection in deep hole machining. When the machine tool is assembled, the coaxality of the guide sleeve and the spindle of the workpiece and the drill pipe box must be ensured. The deviation of the hole in the deep hole processing is linear with the processing length. For example, the length of the guide sleeve is 50mm, and if the offset of the axis of the guide sleeve and the axis of the workpiece is 0.05mm (for example), the deviation of the 1000 mm depth hole may reach more than 1mm.
3. The grinding angle of deep hole drill bit will also affect the deviation degree of machining hole.and the deviation of the hole can be obtained for the different grinding angles of the deep hole bits which are different from the processed materials and the drilling aperture.
4. The uniformity of the material quality of the workpiece is also greatly affected by the Deviation. During processing, the deep hole bit will move toward the direction of soft material. Therefore, the heat treatment of materials is very important in deep hole processing with high deviation. Make the material fine and uniform as much as possible.
5, whether the choice of cutting parameters is reasonable has a certain degree of influence on Deviation . If the production schedule is not affected, it is not appropriate to use a large amount of cutters. The increase of cutting tool will have a negative effect on the deflection of holes.
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