Method for helically milling hole and device thereof

Abstract

The invention discloses a method for helically milling a hole and a device thereof. The method comprises the following steps: a cutting tool automatically rotates around the center line of the cutting tool and rotates around the center of a machining hole; when the size of the hole which is to be machined changes, a distance that the center line of the cutting toll departures from the center line of a stander is adjusted and the hole is continuously to be machined; and the cutting tool is used for continuously milling the hole according to predetermined feed rate until that the hole is machined. By adopting the method and the device, the cutting tool with diameter from 6mm to 8mm is used for machining the holes with different specifications, therefore, tool changing time is reduced, finish machining is avoided, and efficiency is greatly improved. The device also can have holes with high quality on the new materials such as carbonized fiber, titanium alloy, etc. Simultaneously, the device is portable, under the condition with the same precision, greatly reduces dependence to machine tools with large scale and high precision, can combine with manipulators, and can complete the work for milling holes with high precision in the whole assembly of an airplane whole components assembly.

Description

technical field [0001] The invention relates to a helical milling method and a device thereof, in particular to a helical milling method and a device for machining high-precision holes with different diameters in aviation manufacturing equipment design, manufacturing technology and high-strength composite material manufacturing. Background technique [0002] Now our country is in a period of rapid development of manufacturing technology. As the main basic technology of manufacturing technology, cutting processing has made great progress with the development of manufacturing technology. It has entered the stage of developing high-speed cutting, developing new cutting technology and processing methods, A new stage of development characterized by the provision of a complete set of technologies. Aerospace is one of the most important components of the manufacturing industry and the industry with the most high-tech enrichment. In aviation manufacturing, a large number of parts n...

AI Technical Summary

Problems solved by technology

The diameter of the hole is generally 6~15mm. In the traditional drilling process, the linear speed of the spindle center is zero, that is, the center of the drill bit does not participate in cutting, and the removal of workpiece material in this central area depends entirely on the downward movement of the drill. It is extruded by the thrust, so the drill bit bears a very large Z-direction force during drilling. When processing high-hardness materials such as titanium alloys, rapid wear and failure of the tool is a common phenomenon.

In addition, the traditional drilling process is a continuous cutting process, the blade is always in contact with the workpiece, the temperature of the contact surface between the blade and the workpiece is very high during cutting, and the thermal conductivity of titanium alloy is relatively poor. The cutting process leads to the accumulation of temperature, which will also Accelerated tool wear failure leads to reduced machined surface quality

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