It is a common problem in various titanium alloy manufacturers, and the use of high-pressure cooling lubrication is an effective measure to solve the problem of titanium alloy cutting.
1, the characteristics of high-pressure cooling
In actual use, the effective cooling of the cutting tool and the effective control of the chip is a prerequisite, requiring a high pressure of the cooling lubricant, sufficient flow, and accurate alignment of the contact area between the cutting edge and the chip. The use of direct through the spindle/tool high-pressure cooling system, driven by a number of external nozzles to spray the external jet cutting tools, in order to maintain the good running performance of the spindle, fast cooling tools, workpieces and punching chips, improve the quality of parts processing, increase the service life of the tool, improve the reliability of processing, is conducive to the automation of the cutting process.
2, the advantage of high pressure cooling
2.1 High pressure cooling can improve chip breaking
Precise directional and parallel O-100mpa high pressure coolant high-speed jets remove chips from the surface of the transposing blade, which can play a cooling and early chip break role for better chip control. At the same time, the effective cooling of the cutting edge reduces the sensitivity of the cutting edge to thermal fluctuations.
2.2 High pressure cooling can improve the cutting speed
When machining titanium alloys, tools with mechanically clamped indexable plates and integral carbide tools are generally used. Compared with conventional processing, the use of high pressure cooling, due to the reduction of cutting zone temperature, improve the durability of the tool, cutting speed can be increased by 200%.
2.3 Surface quality can be improved by high pressure cooling
The fluctuation of surface quality is due to the influence of temperature changes and cutting forces generated during machining. The traditional cooling method has a positive impact on improving the surface quality of the workpiece, and the use of high pressure cooling greatly affects the results of finishing.3, the use of high pressure cooling, should consider the following points:
3.1 Accurately coordinate the relationship between pressure, flow rate and nozzle aperture
The size of the nozzle aperture should be selected so that the pressure generated and the flow rate can be utilized by the cooling lubricant.
3.2 Determination of working pressure of safety coolant
It should be noted that the coolant pressure cannot exceed the safe coolant working pressure that the tool can withstand, and refer to the tool series safety coolant pressure provided by the tool manufacturer when working.