Portable spiral hole milling device and machining method

Abstract

The invention provides a portable spiral hole milling device and a machining method, which belong to the technical field of spiral hole milling machining, and are applied to new materials such as carbon fiber composites, aluminum alloy, titanium alloy and other hard machined materials. The portable device consists of a cutter self-rotation mechanism, a revolution mechanism, a radial shifting mechanism, an axial feeding mechanism and a machining locating mechanism, wherein a main shaft of the cutter self-rotation mechanism is a mechanical main shaft and is provided with four shaft necks in different shapes, and the center O1 of the axial line of a right-end shaft neck of the main shaft deviates from the center O of the axial line of a main body shaft neck of the main shaft. The portable device is located by a driller template and a fixed bushing in a combination manner; when machining positions are changed, the process is simple and the location is precise; and meanwhile, the portable device has enough stability and rigidity during machining. According to the portable device disclosed by the invention, the end surfaces of a worm wheel and a worm rod for regulating eccentricity are respectively provided with an index plate and an indicator for indicating the eccentricity, so that the regulation of the eccentricity is more accurate and visual.

Description

technical field [0001] The invention belongs to the technical field of helical milling hole processing, and relates to a portable helical milling device and a processing method for difficult-to-machine materials such as new materials such as carbon fiber composite materials, aluminum alloys, and titanium alloys. Background technique [0002] With the rapid development of the contemporary equipment manufacturing industry, aluminum alloys, titanium alloys and advanced composite materials are widely used in aerospace, national defense and military industries, and are used to prepare wings and cabins of large passenger aircraft and military aircraft. Composite material structural parts usually need to be partially connected with titanium alloy and aluminum alloy parts as load-bearing supports to form composite material / alloy laminated components when assembling. The hole making of laminated components is a widely used and extremely important process in aircraft manufacturing pro...

AI Technical Summary

Problems solved by technology

Although the patent summarizes some principles, this manual hole-making tool cannot meet the requirements of the aerospace field for hole-making quality. The reason is that the manual tool is positioned manually, which seriously affects the position accuracy of the hole. Provides too much stiffness, affecting hole concentricity and surface quality

[0004] The patent application number is 200910306026.8, and the patent name is "automatic helical milling hole unit". The automatic helical milling device invented by Qin Xuda of Tianjin University and others uses a double eccentric sleeve to adjust the eccentricity of the tool to solve the problem of aviation Hole making of difficult-to-machine materials in the aerospace field, the entire device has a large radial size and heavy weight, and it needs to be installed on the manipulator

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