Deep Hole Drills Teach You How to Improve the Accuracy of Deep Hole Processing

Deep hole processing is a strong degree of perforation of hole processing technology, generally need to use special deep-hole tools (such as gun drilling, internal chip deep hole drilling, jacket drilling, etc.) and special machine tools for processing, and the use of a large number of circulating cutting oil to complete chip removal and cooling, lubrication tools, cutting oil consumption is greater, not only increase processing costs, but also to the processing site will cause oil pollution, threaten the health of operators, and at the same time will cause the treatment of oil It is one of the development directions of deep hole processing technology to realize dry processing without cutting fluid or sub-drying processing with trace cutting fluid. The longest questions presented in deep hole drilling have the question of drilling skew, guide block wear and so on. These questions are addressed in the process process by:

1. Strictly manipulate the gap between the guide sleeve or guide hole and drill bit in deep hole drilling, and use the guide sleeve rotation method as far as possible to ensure the scale accuracy of the drilling.

2. When drilling deep holes, it is necessary to ensure that the coolant flow is satisfied and the guide block material with good anti-sticking properties is selected to avoid cutting adhesion on the chip block and guide block.

3. Strengthen the guide to reduce the skew of the borehole.

4. Progress guide block or guide hole accuracy, enhance the guidance effect.

5. The coaxial error of the machine spindle, guide sleeve and connector inner hole is necessary to be less than 0.03mm.

6. Properly add the drill head front angle, can reduce the drillradial force, is conducive to the deep hole drilling to reduce the wear of the guide block and reduce the deflection of the drilling.

7. Change the viewpoint of the drill and the width of the knife and tooth, it is necessary to ensure that the radial force has been pressed towards the guide block, never allow editing the direction of the guide block. Radial forces are neither too small nor too large. Too small radial force will make the drill bit guide weakened, simple vibration, too large radial force simply destroythe the oil film of the guide block, so that the guide block wear son faster. Therefore, in the deep hole drilling to pay great attention to this question.