Automatic adding and discharging carrier of sclerometer and measuring cell

Abstract

This invention discloses one metal and non metal hardness test and study meter automatic load and measurement unit, which comprises supportive rack, step drive structure, main axis loading structure, and main axis structure, clamping structure, print deepness measurement structure and electricity control structure. This invention can automatically trace print deepness to eliminate rack deformation and impact on test parts and can exert initial test force under slow impact status and can automatic clamp test parts free of size and weight impact.

Description

1. Technical field: [0001] The invention relates to a durometer used for testing and researching the hardness of metals and nonmetals, more specifically, it relates to an automatic load-unloading and measuring unit for the durometer. 2. Background technology: [0002] (1) The conventional hardness tester is to apply the test force on the spindle to the test piece through the indenter to form an indentation, and then calculate the hardness value of the metal and non-metal according to the size and depth of the indentation. [0003] (2) The application and removal of the test force of the conventional hardness tester is carried out through a set of complex mechanical system, which is lifted by the standard weight weight with the buffer system, and amplified by the lever, so that the force generated by the weight acts on the indenter In this way, the loading and unloading mechanism becomes complex in structure, bulky, and the accuracy cannot be reliably guaranteed. At the same ...

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Problems solved by technology

[0003] (2) The application and removal of the test force of the conventional hardness tester is carried out through a set of complex mechanical system, which is lifted by the standard weight weight with the buffer system, and amplified by the lever, so that the force generated by the weight acts on the indenter In this way, the loading and unloading mechanism becomes complex in structure, bulky, and the accuracy cannot be reliably guaranteed. At the same time, the conversion between different test forces needs to be controlled by a complex load-changing mechanism.

[0004] (3) The indentation depth measurement mechanism of the traditional hardness tester is usually fixed on a rigid frame, which cannot realize tracking measurement

The indentation depth measurement mechanism is in contact with the main shaft equipped with the indenter, and the data measured by the indentation depth measurement mechanism is actually the displacement of the indenter relative to the frame, so when the rigidity of the workbench carrying the test piece is insufficient and the test piece is deformed Or when the rigidity of the frame is insufficient and relative deformation occurs before and after the test force is applied and removed, the data measured by the indentation depth measurement mechanism includes these deformations, which will bring a large error to the actual depth measurement of the indentation, so Such structures usually have extremely high rigidity requirements, making processing and assembly complex and difficult

[0005] (4) So far, various types of hardness testers have no effective clamping mechanism, so the test pieces cannot be effectively clamped, and it is difficult to measure thin-walled parts and special-shaped parts, which limits the use of hardness testers

[0006] (5) The initial test force applied by the traditional hardness tester needs to be completed by the operator rotating the handwheel of the carrying table by hand, and measuring the displacement of the spindle through the displacement indicator. The operation is complicated, the human error is large, the repeatability is poor, and the accuracy is low.

[0007] (6) The movement range of the main shaft of the indenter is small, only less than 1mm, and the height of the workbench needs to be adjusted manually to adapt to the height change of the test piece for each point test, so as to complete the initial test force, so the labor intensity is high and the work efficiency is low

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