What measures can be taken to ensure the processing quality of the drilling holes that occupy a large proportion in Dongguan CNC Precision Processing Factory
author: Hansheng Automation
2023-05-11
Drilling is a basic method of hole processing, which occupies a large proportion in Dongguan CNC precision machining factory. The tools used for drilling are shoulder drills and Fried Dough Twists drills, which can process holes on solid materials.
Due to the high cutting load, poor tool stiffness, and structural defects of the drill bit during drilling.
The following problems often arise during drilling: the drill bit is prone to deviation, resulting in deviation of the hole axis and straightness errors; The aperture is easy to expand; Rough hole wall; The axial force during drilling is high. So the drill bit
Generally, it can only be used for machining holes with low precision requirements or for rough machining of holes with high precision requirements. The general dimensional accuracy of drilling is T11~T14, and the surface roughness is Ra60~12.5m.
In order to ensure processing quality, the following measures are adopted in the process:
(1) Before drilling, machine the end face to ensure that it is perpendicular to the drill bit and prevent deviation.
(2) When grinding, try to make the two main cutting edges of the drill bit symmetrical, so that the radial cutting force generated by the two cutting edges is consistent.
(3) Dongguan CNC Precision Machining Factory uses a drilling jig as a guiding device, which can reduce the deviation at the beginning of drilling, especially when drilling on inclined or curved surfaces.
(4) When drilling small or deep holes, a smaller feed rate should be used.
Dongguan CNC Precision Machining Factory Should Learn to Choose Processing Methods and Content Based on Processing Characteristics
Repair of CNC Machine Tools in Precision Parts Processing
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