CMM blade clamping unit and modular measuring fixture

Abstract

The invention provides a three-coordinate measuring machine blade clamping unit and a modular measuring fixture, which are efficient, reliable, high in precision, strong in versatility, and beneficial to modular production. The clamping unit includes a support seat, a positioning block installed on the support seat, a guide rail, a quick clamp fixing seat and a quick clamp installed on the quick clamp fixing seat, and a clamping block is installed on the sliding part of the guide rail , the clamping end of the quick clamp faces the rear end of the clamping block. The jaw of the clamping unit is modularized and consists of two parts, namely, the positioning block and the clamping block. The positioning block is a stationary part, which is precisely positioned and fixed on the base to position the workpiece; the clamping block slides with the sliding part of the guide rail , the force is exerted by the quick clamp, and it is pressed on the workpiece, thus ensuring the reliability of the clamping, ensuring the measurement accuracy and improving the measurement efficiency.

Description

technical field [0001] The invention relates to the technical field of engine blade measurement, in particular to a fixture for blade measurement. Background technique [0002] Jet engines are increasingly being used in various fields. As a key part of the engine, blades are becoming more and more important to improve their production efficiency and ensure their processing quality. Blade detection is an important means to ensure the quality of blade manufacturing. The three-coordinate measuring machine has been introduced into the jet engine industry for many years. The blade detection of the jet engine is mainly carried out on the three-coordinate measuring machine at present, and the clamping and positioning of the blade affects its The key factor of detection accuracy, therefore, the three-coordinate measuring machine fixture is particularly important. [0003] In the prior art, most of the blades are directly clamped by vise, which is a commonly used clamping tool and ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, most of the blades are directly clamped by vise, which is a commonly used clamping tool and has good versatility, but the vise does not have an accurate positioning mechanism and cannot meet the repeatability requirements for clamping the workpiece; the operability of the vise Not good, it takes time and effort to clamp the blades; in addition, the vise is bulky, heavy, and inconvenient to operate

Obviously, the vise cannot meet the high requirements of the measuring machine for accuracy and efficiency

[0004] In the measurement industry, there are also special fixtures for certain blades. This kind of fixture can improve the clamping accuracy and efficiency, but it cannot adapt to the clamping of other types of blades.

As we all know, if an engine has multiple types of blades, it is necessary to equip each blade with a set of fixtures, which is costly and easy to cause waste of resources

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