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Method for determining machining positioning datum of metal honeycomb plate

A metal honeycomb and positioning datum technology, which is applied in the field of composite material manufacturing, can solve the problems of excessive front position, inaccurate alignment accuracy on the reverse side, affecting product quality, etc., to achieve the effect of improving quality and ensuring production progress.

Inactive Publication Date: 2016-09-28
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The front and back sides of the structure have sags that need to be processed, but in the actual processing process, the alignment accuracy of the back side is not accurate, resulting in the deviation between the sag of the back side and the position of the front side, which seriously affects the product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0011] The specific implementation of the above invention content includes the following steps:

[0012] Step 1: Lay the metal honeycomb with tape on the vacuum suction platform, and keep the X direction of the honeycomb level with the platform. Find a point in the lower left corner of the honeycomb, as the coordinate system, use a sharp knife to cut the cross coordinate hole, the number is 2;

[0013] Step 2: Use a sharp knife to make a cross coordinate hole on the surface of the metal honeycomb according to the pre-designed knife path. The X and Y directions of the cross coordinate holes must be kept parallel. The focal distance of the two crosshairs is greater than half of the X direction of the honeycomb panel;

[0014] Step 3: Turn the honeycomb panel in the X direction, and glue the opaque tape along the line connecting the centers of the two cross coordinate holes;

[0015] Step 4. Set the center of any cross coordinate hole as the new coordinate origin on the processing plat...

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Abstract

The invention belongs to the composite material manufacturing technology, and in particular relates to a method for determining the positioning reference of a metal honeycomb panel in the process of honeycomb processing. Both the front and back sides of the honeycomb core need to be processed to have sags, and the alignment accuracy of the back side is not accurate, which seriously affects the product quality. In the present invention, any position on the processing platform is set as the coordinate origin in the controller; at two predetermined positions of the metal honeycomb panel, a sharp knife is controlled to cut a cross coordinate hole; the metal honeycomb panel is turned over, along the Bond the opaque adhesive tape to the line connecting the centers of the two cross coordinate holes; start the sharp knife from the center of one of the cross coordinate holes, move close to the surface of the metal honeycomb panel along the X direction of the machine tool, so that the sharp knife track coincides with the edge of the tape for processing. The method of the invention improves the problem of improving the precision of metal honeycomb reverse alignment, improves the quality of metal honeycomb double-sided processing, and ensures production progress.

Description

Technical field [0001] The invention belongs to composite material manufacturing technology, and in particular relates to a method for determining the positioning datum of a metal honeycomb panel during honeycomb processing. Background technique [0002] The floor of the aircraft mostly uses metal honeycomb sandwich structures to meet this technical requirement. Both the front and back sides of the honeycomb core need to be processed to sink. The previous processing method is to place the honeycomb core between the upper and lower skins and punch with a 100-ton press. Now the honeycomb core is processed in the form of CNC machining. The front and back sides of the structure have sags that need to be processed, but in the actual processing process, the accuracy of the back side alignment is inaccurate, causing the back side processing to sink and the front side position out of tolerance, which seriously affects the product quality. Summary of the invention [0003] The present in...

Claims

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Application Information

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IPC IPC(8): B21D47/00B21C51/00
CPCB21D47/00B21C51/00
Inventor 郝宇刘艳伟
Owner HARBIN
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