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Convertible modular fixture of multifunctional frictional wear testing machine

A friction and wear test, combined fixture technology, used in measuring devices, instruments, scientific instruments, etc., can solve the problems of inability to meet the needs of experiments, difficulties in tribological tests, and single type of indexable CNC turning inserts, and can achieve disassembly and assembly. And the replacement is simple and convenient, accurate and effective tribological performance, stable and reliable clamping effect

Active Publication Date: 2013-09-25
WUHAN RES INST OF MATERIALS PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the diversification of the shape of indexable CNC turning inserts, and in actual turning, there are left and right offsets, as well as a variety of entering angles, rake angles, and edge inclination angles, it is recommended to directly use indexable CNC turning inserts for UMT friction scientific experiment brings difficulties
The fixtures in the prior art can only be installed in a simple vertical direction, and the indexable CNC turning inserts that can be clamped have a single model, and the leading angle, rake angle, and edge inclination angle cannot be effectively reflected, and the indexable CNC turning inserts cannot be guaranteed The repeatability of the clamping affects the credibility of the experimental data and cannot meet the needs of the experiment

Method used

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  • Convertible modular fixture of multifunctional frictional wear testing machine
  • Convertible modular fixture of multifunctional frictional wear testing machine
  • Convertible modular fixture of multifunctional frictional wear testing machine

Examples

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Embodiment Construction

[0031] Now further illustrate how the present invention is implemented in conjunction with accompanying drawings:

[0032] Such as figure 2 In the example shown, the reference main cutting plane 21 is perpendicular to the base plane 1 and parallel to the intersection line of the groove side 2 and the groove bottom 3, and the reference orthogonal plane 20 is perpendicular to the base plane 1 and the reference main cutting plane 21 at the same time.

[0033] Such as Figure 9 In the example shown, four screws 12 are used to mount the fixture base 6 on the UMT force sensor 11 . The four screws 12 are evenly installed on the four corners of the fixture base 6, so that the clamping of the fixture base 6 on the testing machine is stable and the positioning is accurate.

[0034] Then, according to the indexable CNC turning insert 13, select a suitable convertible fixture base 7, such as the CNMG series indexable CNC turning insert 13 shown in the figure as an example, according to...

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Abstract

The invention provides a convertible modular fixture of a multifunctional frictional wear testing machine, relating to an indexable numeric control turning blade fixture. The primary structure of a convertible fixture of the convertible modular fixture provided by the invention is a stepped slot, the stepped slot is provided with an upper base surface, a slot side and a slot bottom surface, the slot side and the slot bottom surface are mutually vertical, the lower part of the stepped slot is provided with a U-shaped opening cutter feeding slotted hole, the upper part of the stepped slot is provided with a U-shaped opening cutter retracting slotted hole which is consist with the direction of the cutter feeding slotted hole, a slot included angle, a tool cutting edge angle, an oblique angle, tool cutting edge inclination and a front angle related angle are formed, and a calculation formula which can design and calculate an included angle-inclined angle between a center line of a slot and the horizontal line is provided, namely the tool cutting edge angle Kr is equal to 90 degrees plus or minus (oblique angle alpha-1 / 2. the slot included angle theta), thus the primary structure of the convertible fixture which can be comprehensively and accurately adaptive to a diversity indexable numeric control turning blade, and an accurate, high-efficiency and practical innovative tool is provided for detecting and evaluating tribological properties and cutting capacity of the indexable numeric control turning blade.

Description

technical field [0001] The invention relates to a convertible combined clamp for a multifunctional friction and wear testing machine, in particular to a clamp for an indexable numerically controlled turning blade of a multifunctional friction and wear testing machine (UMT). Background technique [0002] The UMT multi-functional friction and wear testing machine of CETR company in the United States is a widely used tribological test device. It can evaluate the friction performance of indexable CNC turning inserts and their surface coatings by using suitable fixtures. Due to the diversification of the shape of indexable CNC turning inserts, and in actual turning, there are left and right offsets, as well as a variety of entering angles, rake angles, and edge inclination angles, it is recommended to directly use indexable CNC turning inserts for UMT friction Difficulties in scientific testing. The fixtures in the prior art can only be installed in a simple vertical direction, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/04
Inventor 李健徐建华涂杰松吴勇李春燕
Owner WUHAN RES INST OF MATERIALS PROTECTION
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