Hardometer

Abstract

The invention discloses a hardometer which comprises a supporting pipe, a hardness sensor, a magnetic testing body which is arranged in the supporting pipe in a sliding mode, and a transmission device arranged in the supporting pipe, wherein the transmission device drives the magnetic testing body to impact the surface of a workpiece so as to generate impact speed and rebound speed; a data processing transmitter is arranged on the hardness sensor; the data processing transmitter comprises a shell, and a data processing unit, a data emission and transmission unit and a battery which are fixedly arranged in the shell; data measured by the hardness sensor is directly transmitted to the data processing unit for processing and is wirelessly transmitted to an external receiver through the data emission and transmission unit. The data processing transmitter is directly arranged on the hardness sensor, so that the data processing transmitter is directly combined to the hardometer, and the problem that a transmission line of an external data processor is easily damaged is solved. Meanwhile, the inclination angle of the hardometer is detected through a triaxial sensor, so that data compensation is calculated, and the measurement accuracy is improved.

Description

technical field [0001] The invention relates to a hardness tester. Background technique [0002] Hardness testers can effectively help mechanical engineers choose the most suitable material and the best engineering design in various environments. [0003] In the prior art, a portable hardness tester is commonly used, which includes a support tube, a hardness sensor, a test body that can slide in the support tube, and a transmission device arranged in the support tube, wherein the test body is made of magnetic material, and the transmission The device can drive the test body to impact the surface of the workpiece to generate impact velocity and rebound velocity. Several coil groups are arranged in the hardness sensor, and the coil groups are connected to an external data processor through a transmission line. When the test object impacts the surface of the test workpiece at a certain speed, and when the test object rebounds from the surface of the workpiece, a current will b...

AI Technical Summary

Problems solved by technology

[0005] 1. Since the data processor is externally connected, the transmission line between the hardness sensor and the data processor is very easy to be damaged during long-term use, especially the connection head, which is prone to loosening and breaking

And due to the limitation of transmission line length, it is not suitable for long-distance measurement

[0006] 2. Since the test body slides in the support tube, the resistance of the side wall of the support tube will inevitably cause errors in measurement accuracy

If the hardness tester is set to be placed vertically to measure the horizontal surface of the workpiece, the measured value is accurate, then when the hardness tester is tilted, there must be errors due to the influence of the acceleration of gravity

When used on site, it is often necessary to measure the inclined side of the workpiece, or even the bottom surface of the workpiece, which causes a considerable error value, resulting in inaccurate measurement

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