3 methods of deep hole processing of Ji'nan hand model:
1 、 the long handle twist drill is machined on the universal machine tool. A long handled twist drill is a long shank welded on an ordinary twist drill.
Because of the large axial force cutting drill, drill edged symmetry is not easy to wear, chisel edge grinding quality can not be guaranteed, and the cutter bar with poor rigidity, so processing is easy to vibrate, the center line of the hole is easy to produce deviation, due to limited space in order to drill chip, chip removal and cooling tool, must be in processing a length (5~10 mm) is a bit out of.
For the spindle with longer spindle angles, the drilling method is used at both ends. Therefore, the deep hole processing method has poor quality, low productivity and high labor intensity, but because of the simple manufacture of the cutting tool and the use of universal equipment, the utility model can be used more in single piece and small batch production.
2, the material knife processing deep hole. Larger hole diameter (general diameter greater than 50mm) should be processed with a knife set. This method reduces the cutting load, thereby increasing productivity and reducing material consumption. When the diameter of the utility model is small, the integral welding type is adopted; when the diameter is large, the assembly type or the adjustable type can be adopted.
The tool should be used to wear strip guiding device, the material can be textolite, hard alloy, rolling bearing, blade design should also consider the chip and chip breaking. It is also suitable for mass production.
3. Use deep hole drilling on special deep hole drilling machine. Deep hole drilling is a better way to solve such problems as offset of tools, cooling of cutting tools and chip removal in deep hole machining, which obviously improves machining quality and productivity.
Deep hole capable of processing to 10~30. Deep hole machining machine tool can use special deep hole drilling machine, also can be converted to ordinary lathe.
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