Deep hole drilling method for tiny thin-walled parts

Abstract

The invention discloses a deep hole drilling method for tiny thin-wall components. The deep hole drilling method is characterized by comprising the following steps that in the step of SS1, a centeringdrill is utilized for centering a product, the drilling depth is set, and the machining allowance for a next drill bit is reserved; in the step of SS2, a medium drill bit is adopted for product drilling, the drilling depth is controlled, and the machining allowance for a next drill bit is reserved; and in the step of SS3, a long drill bit is adopted for product drilling, the drilling depth is controlled, and the single-side allowance is reserved. The tiny long wire diameter ratio thin-wall component drill bit machining technology is provided for the technical problems that according to existing centering drill machining, the drill bit wire diameter ratio is too long, and after a drill bit vibrates, and eccentric drilling, wall breaking and fracture are likely to happen to holes. Accordingto the technology, the technology is optimized from the aspects of tool selection, rotation speed, feeding, cutting amount and cutting reserved amount control, a drilling scrap feeding method and thelike, and accordingly the technical problems that according to tiny drill bit thin-wall deep hole drilling, eccentricity and scrap winding are likely to happen, and drill bits are prone to fracture are solved.

Description

technical field [0001] The invention relates to a deep hole drilling method for tiny thin-walled parts, belonging to the technical field of mechanical processing. Background technique [0002] Such as Figure 4 As shown, for the traditional drilling process, the material removal part is conical after the center drilling is used; then as Figure 5 As shown, the conical shape is reserved after the spot drilling process, which causes the force of the drill bit to suddenly increase when the hole is in contact with the material. Because the drill bit wire diameter ratio is too long, after the drill bit vibrates, the hole is very prone to drilling eccentricity, The problem of broken walls and fractures. Such as Image 6 Shown is a schematic diagram of the traditional tool feed, the specific CNC tool feed process is: G0X0Y0Z15T31; G0Z0.2; G83Z-7.0Q10000F0.01; 1, G83 (deep hole peck drilling); 2, Z-7.0 (drilling depth); 3, G0Z0.2 (distance from workpiece surface); 4, F (feed per ...

AI Technical Summary

Problems solved by technology

[0003] In this feed mode, the drill bit will have drill chips remaining, which will lead to secondary cutting of the hole; the above G83 pecking mode advances and retreats as G0 rapid feed

This feed mode will cause drill chips to remain on the drill bit and cause secondary cutting of the drill hole, which is a key factor affecting small drilling eccentricity and drill bit breakage

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