Universal tool for pasting reinforcing sheets and using method and application thereof

Abstract

The invention belongs to the field of universal tools, and particularly relates to a universal tool for pasting reinforcing sheets and a using method and application thereof. The universal tool comprises an L-shaped right-angle main positioning arm, a first sliding arm perpendicular to one side of the right-angle main positioning arm, a second sliding arm perpendicular to the other side of the right-angle main positioning arm, a positioning slide knob for connecting the first sliding arm and the second sliding arm, and a limiting block for positioning the reinforcing sheets and ensuring the gauge length of a tested test piece, wherein the limiting block is arranged in a rectangle formed by the right-angle main positioning arm, the first sliding arm and the second sliding arm. The universaltool can be used for pasting reinforcing sheets on composite test pieces which have different types and specifications and can assist in rapid preparation of the test pieces with the reinforcing sheets, so that the reinforcing sheet pasting procedure is simplified, the reinforcing sheet pasting tool cost is lowered, and pasting efficiency and the test piece machining dimension precision are improved.

Description

technical field [0001] The invention belongs to the field of general tooling, and in particular relates to a general tooling for pasting reinforcing sheets and its use method and application. Background technique [0002] When testing the mechanical properties of composite material test pieces, whether it is the national standard or the ASTM standard, some test pieces need to be pasted with reinforcement sheets to ensure effective failure modes during the test, such as tensile strength samples (ASTMD3039) and compressive strength samples (ASTM D695) preparation, all need to paste the reinforcement sheet, and according to the thickness change of the test sample, the size, thickness and type of the reinforcement sheet are different. In particular, the size difference between the tensile strength reinforcing sheet and the compressive strength reinforcing sheet is large. [0003] The existing reinforcing sheet pasting method is usually to design special reinforcing sheet pastin...

AI Technical Summary

Problems solved by technology

[0003] The existing reinforcing sheet pasting method is usually to design special reinforcing sheet pasting tooling for different samples. The tooling is only suitable for the bonding of reinforcing sheets of specific types of test pieces, and is only suitable for the preparation of specific size and thickness of reinforcing sheet test pieces. , poor versatility, the number and size of prepared samples are limited, the process is complicated, and the cost is high

First of all, the reinforcement sheet bonding tool designed for tensile samples is not suitable for the bonding of the reinforcement sheet of the compressive strength composite material test piece. Different types of test pieces need to design special special tooling, and the cost is high

At the same time, most of the existing tooling adopts upper and lower closed molds, which are difficult to clean and the process is complicated. However, no matter whether the reinforcement sheet is pasted with adhesive film or adhesive, the thickness of the adhesive layer needs to be artificially calculated and controlled through the thickness of the reinforcement sheet and the gap between the molds. The thickness of the sheet is limited by the size of the mold, and the thickness and uniformity of the adhesive layer are difficult to guarantee

In addition, the existing tooling does not have a unified positioning reference, and the quality of pasting the reinforcement sheet is highly dependent on personnel, which brings difficulties to the subsequent finishing and cutting of the test piece, and it is difficult to guarantee the processing accuracy of the final test piece

Images