Spiral hole milling device

Abstract

The invention discloses a spiral hole milling device. The spiral hole milling device comprises an rotationsystem, a revolution system, a feeding system and an eccentricity adjusting system. An electric main shaft in the rotation system drives a milling cutter to rotate through a spring collet arranged on an output shaft of the electric main shaft. A revolution motor in the revolution system drives an inner sleeve to perform revolution relative to the axis of an outer sleeve through a small synchronous pulley, a synchronous belt and a large synchronous pulley. A feeding motor in the feeding system drives a feeding lead screw to enable a feeding nut to move so as to achieve feeding. An eccentricity adjusting mechanism in the eccentricity adjusting system controls motion of a shifting sliding block, a fixed anti-backlash nut and a movable anti-backlash nut remove the backlash of the eccentricity adjusting system, and therefore high-precision adjustment of the eccentricity can be achieved. A holding mechanism arranged on the inner sleeve achieves the aim that the shifting sliding block is held on the inner sleeve after the eccentricity adjustment is completed. The spiral hole milling device can be applied to integral, high-quality and high-efficiency hole forming of difficultly-machined materials in the aerospace field.

Description

technical field [0001] The invention relates to the field of helical milling hole devices, which can be applied to the integrated, high-quality and high-efficiency hole making of difficult-to-machine materials in the aerospace field. Background technique [0002] At present, my country is in a period of rapid development of manufacturing technology, and cutting processing is the main basic process of manufacturing technology. As an important part of the manufacturing industry, aerospace has always been the industry with the richest high-tech. In aviation manufacturing, assembly hole making is a key link in the manufacture and assembly of aircraft and large aircraft. The hole making efficiency directly restricts the aircraft assembly cycle, and the hole making quality will also directly affect the fatigue resistance of the connected structural parts. The traditional drilling process is a continuous cutting process. For titanium alloys with poor thermal conductivity, the dril...

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Problems solved by technology

[0006] Aiming at the technical problems of large eccentricity adjustment error, no clamping device, poor rigidity of radial offset device and radial offset device will be more difficult to adjust as the eccentricity increases in the structure proposed by the above patent, the present invention provides a A helical milling device with high adjustment precision, good working stability and convenient adjustment

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