Self-adjustable face-to-face reciprocating type friction testing device and testing method thereof

Abstract

The invention discloses a self-adjustable face-to-face reciprocating type friction testing device and a testing method thereof. An upper clamp with an upper friction test piece is connected with the front end of a strain beam, the rear end of the strain beam is connected with a first retainer, a lower rotating shaft is arranged on a moving platform through a second retainer, the axial lead of thelower rotating shaft is arranged along the moving direction of the moving platform, and a lower clamp with a lower friction test piece is positioned below the upper clamp and arranged at the top of the lower rotating shaft, so as to adjust the contact surface between the upper and lower friction test pieces around the axial lead of the lower rotating shaft; the moving platform is arranged on a reciprocating motion motor, so as to drive the lower friction test piece to do linear reciprocating motion relative to the upper friction test piece, and a strain gage arranged on the strain beam is usedfor collecting friction data; the lower clamp is rotated through the lower rotating shaft, so that the lower friction test piece can be slightly adjusted around the lower rotating shaft so as to be close fit with the contact surface with the upper friction test piece; and during the motion, the lower friction test piece can also be self micro-adjusted, so that the truth and accuracy of the surface-to-surface contact friction can be improved.

Description

technical field [0001] The invention relates to the field of tribological performance testing equipment and a testing method thereof, in particular to a self-adjustable face-to-face reciprocating friction testing device and a testing method thereof. Background technique [0002] Reciprocating friction is a common form of friction, and the study of reciprocating friction is of great significance for evaluating the friction characteristics of materials. [0003] At present, the methods of testing reciprocating friction characteristics mainly include ball-plane, pin-plane, cylinder-cylindrical and plane-plane. In terms of contact friction or line-surface contact friction, surface-to-surface contact friction has a large contact surface, which can easily lead to incomplete contact of the contact surface, so that the collected friction signals cannot truly reflect the characteristics of face-to-face friction. [0004] Traditional plane-plane friction testing devices usually rely ...

AI Technical Summary

Problems solved by technology

[0003] At present, the methods of testing reciprocating friction characteristics mainly include ball-plane, pin-plane, cylinder-cylindrical and plane-plane. In terms of contact friction or line-surface contact friction, surface-to-surface contact friction has a large contact surface, which can easily lead to incomplete contact of the contact surface, so that the collected friction signals cannot truly reflect the characteristics of face-to-face friction

[0004] Traditional plane-plane friction testing devices usually rely on processing and installation accuracy to control the contact state of the friction surface, but it cannot guarantee the complete contact of the friction surface

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