Blind hole drilling method

After the drilling boring tool is selected and installed, and the workpiece is clamped and aligned on the rocker drilling machine, drilling can begin. Drilling and axle-like workpieces are the same as the outer circle of the car, and the roughing and finishing processes should be separated.

In terms of cutting amount determination and selection, since the workpiece condition of the drilling is worse than the outer circle of the vehicle, especially after the drilling tool is clamped, the hanging elongation of the drill rod is often larger than the overhang of the outer turning tool, and the rigidity ratio thereof is The outer turning tool is low and is more prone to vibration. Therefore, the feed rate and cutting speed during drilling are lower than when the outer turning is performed.

Blind hole drilling. The length of the drill is slightly longer than the diameter of the drilled hole, and the size of the drill should be smaller than the radius. When the hole is drilled, when drilling the hole, install the hole cutter according to the method shown in the figure. After several times of feeding, the bottom of the hole is leveled. When drilling the hole depth, the drill hole is horizontally oriented to the hole. The center exits and then exits the hole longitudinally. When adjusting the amount of back-feeding knife, it should be noted that the direction of the back-slurry of the slider of the skateboard dial during drilling is opposite to that of the outer circle.

Fine drilling allowance should be left for rough drilling. When the wall of the hole is thin, the workpiece should be relaxed before the fine drilling, and then gently clamped to prevent the workpiece from being deformed due to over-tightening. Drilling routes when drilling blind holes are advantageous for removing chips. The method of controlling the drilling speed is usually done by scribing the drill rod or using the dial on the slide box. When the tool is automatically moved, when the drilling depth is reached, the manual feed should be manually slowed to avoid damage to the drill.

Radial Drilling Machine Series http://YaoBiZuan/