High-efficiency rough machining method suitable for titanium alloy forge pieces

Abstract

The invention relates to the machining of titanium alloy workpieces in the field of aviation, in particular to a high-efficiency rough machining method suitable for titanium alloy forge pieces. Specific methods and related parameters of the high-efficiency rough machining for titanium alloy are disclosed; as the prior art relating to the field of the method has the problems of low machining efficiency of the titanium alloy workpieces, high investment and high consumption of titanium alloy materials and manpower, the method is researched and developed; the service life of a cutter is long; the removing quantity of the titanium alloy in a unit time is largely increased; the rough machining efficiency for cativities of the titanium alloy workpieces is enhanced by 12.6 times; and the effects of high efficiency and economy are achieved.

Description

technical field [0001] The invention relates to the machining of titanium alloy workpieces in the aviation field, in particular to an efficient rough machining method suitable for titanium alloy forgings. Background technique [0002] In the prior art, rough machining of titanium alloy workpieces is generally divided into outline rough machining and cavity rough machining. [0003] When roughing the outline, the general processing method is the blade type disc milling cutter / layered processing of each layer. This method has a high metal removal rate, but due to the small elastic modulus of the material, the blade wears seriously, the life is short, and the blade loss is large. The economy is not obvious. [0004] During the rough machining of the cavity, the general processing method is the blade-type tool with small depth of cut and low-feed layered milling. Among such tools, even the fast-feed blade of a certain brand known as the king of feed can only reach 1000MM / min...

AI Technical Summary

Problems solved by technology

[0003] When roughing the contour, the general processing method is blade type disc milling cutter / layered processing of each layer. This method has a high metal removal rate but due to the material elasticity The modulus is small, resulting in serious blade wear and short life, and the blade loss is large and the economy is not obvious

[0004] During the rough machining of the cavity, the general processing method is the blade-type cutter with small depth of cut and low feed layered milling method. Even the so-called feed A certain brand of Wang’s fast-feed blade can only reach a tool feed speed of 1000MM / min, and the cutting depth of each knife during the use of the fast-feed tool cannot exceed 2MM (such as Figure 2), while the conventional blade square shoulder milling cutter or round nose blade can cut deeper than Fast feed tool but the feed rate is as low as 300MM / min, its efficiency is too low, and milling in this way is due to tool reasons (the tool has a small back angle, the edge is not sharp and the strength is low, so long-term spiral downcutting cannot be performed) , it is also necessary to pre-drill the tool hole and ream the hole before processing (such as Figure 1), which further reduces the processing efficiency

In addition to low efficiency, the service life of such tools is also very low. The best-performing machine-clip inserts do not exceed 2 hours under full load. If full-load cutting often requires four sets of replacement for rough machining of titanium parts in one shift The above blades (Note: 3 blades in each group), and the processing process needs to be carefully observed during the processing to prevent quality accidents caused by the blade falling off or collapsing, and the economy is quite poor.

Images