What is the best method for high precision internal hole machining?

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1. Drilling Commonly used drilling machines are: desktop drilling machines, vertical drills; and radial drilling machines. 2 61. Drilling machine 1) Bench drilling machine is a small machine tool that is placed on a fitter table for use.

The diameter of the drilling hole is generally less than 12mm. It is mainly used to process various holes on small workpieces, and is most used among fitters. 2) Vertical drilling machine is generally used to drill holes on medium-sized workpieces, and its specifications are expressed by the maximum drilling diameter.

There are several commonly used such as 25mm, 35mm, 40mm, 50mm, etc. 3) radial drilling machine: the spindle box can be moved laterally on the rocker arm, and can be adjusted up and down along the column with the rocker arm 3 62, twist drill twist drill is the main tool for drilling, it is composed of cutting part, guide part and shank part, as shown in Figure 4.

When the diameter is small t12mm, it is generally a straight shank drill bit, and when it is more than 12mm, it is a taper shank drill bit. 4 6 Second, reaming The tool used in reaming is reaming drill. Due to the good rigidity of the reaming drill, no transverse edge, and good guidance, the reaming size tolerance grade has been improved.

The reaming can be used as a final process or as a pre-machining before reaming. 5 6 Third, countersinking On the surface of the orifice, a certain shape of the hole or the plane of the boss is processed by countersinking, which is called countersinking. 6 6 Fourth, reaming reaming is the finishing of holes.

The reaming can be divided into coarse hinge and fine hinge. Hope it helps. Have a great day!

First of all, the hole diameter tolerance is very well guaranteed, whether it is fine boring or fine hinge can be guaranteed, the difficulty of the piece is the position, and it needs to be mass-produced, I don't know how much your mass production is? If it is industrial-grade mass production, the existing processing potato testing technology cannot reach it.

First of all, this kind of high-precision processing, the basic environment must be guaranteed: 1, the temperature is constant 20 1 °, 2, the humidity is 50%, and secondly, the processing equipment: 1, must be fully closed-loop, 2, the positioning accuracy of the machining center must be higher than the commonly used high-end horizontal machining center I know, optical coordinate grinding machine may be), 3, the testing equipment must be a measurement type high-precision three-coordinate error is less than.

After the above conditions are met, the processing technology is not detailed, and the main points are noted: 1. The constant temperature of the blank and the temperature control of the hand-shot in the processing process, such as the temperature of the workpiece can not be raised, and the cutting must be at constant temperature; 2. Whether the aging of the blank is qualified, the aging after rough machining, etc.; 3. Select appropriate tools and materials according to the equipment, such as CBN, ceramics and other materials to maintain high stability; 3. Allocation of processing allowance.

The above processing methods are estimated to be unable to meet the requirements of the drawings you want, and you still have the most important rough Kai has not written. Theoretically, it is necessary to ensure the coordinate position and hole diameter, optical coordinate boring, and if the roughness is required, the hole must be honed.