Automatic drilling device for end frames of composite material barrel

Abstract

The invention provides an automatic drilling device for end frames of a composite material barrel. The automatic drilling device comprises a plurality of rotating brackets placed on the same horizontal plane, and the composite material barrel is placed on the plurality of rotating brackets; two ends of the composite material barrel are connected with a front end frame drilling device and a rear end frame drilling device respectively; the front end frame drilling device and the rear end frame drilling device are consistent in structure and used for drilling holes in a front end frame and a rear end frame of the composite material barrel respectively. According to the device, automatic processing of holes in the front end frame and the rear end frame of the composite material barrel is achieved, the automation level is high, the processing efficiency is high, the dimensional accuracy and the position accuracy of hole drilling in the composite material are greatly improved, and the processing period is shortened.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to an automatic drilling device and method for the end frame of a composite material cylinder, which is applicable to the diameter of the composite material cylinder , the length of the end frame with a length of 3 to 10m is processed in the axial connection hole and the radial connection hole, and the diameter of these holes is Between, hole processing depth between 1 ~ 100mm. Background technique [0002] Carbon fiber composites and FRP composites are typical aerospace materials. Various defects such as delamination are produced during processing, which greatly reduces the performance of the material. The front and rear end frames of composite materials with a barrel structure need to process radial or axial connection holes. According to the length and diameter of the barrel, the hole diameter and hole depth are often large, and the number is as many as several hundred. [0...

AI Technical Summary

Problems solved by technology

very low versatility

[0005] In terms of reducing the drilling defects of composite materials, due to the instability of the axial force and the low rotation speed of the tool, the manual electric drill often adopts a backing plate at the exit of the hole to make the layer diameter smaller than or equal to the hole diameter, and the operation is cumbersome.

Drilling holes with a rocker arm can be used to make small holes first, and gradually expand the holes to the nominal size, but due to the unavoidable vibration of the composite material cylinder, various defects often occur

Images