Finger friction test device

A test device and finger technology, applied in the field of finger friction test device, can solve the problems of great influence of friction tribological characteristics, great variation of contact area, large error, etc., and achieve the effect of wide application range and accurate parameters

Pending Publication Date: 2017-04-19
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, when the friction angle changes, the contact area between the finger and the object changes greatly, which has a great impact on the tribological properties such as fricti

Method used

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  • Finger friction test device

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Example Embodiment

[0026] figure 1 It is shown that a specific embodiment of the present invention is a finger friction test device, which is characterized in that: the upper surface of the rectangular base 11 is sequentially installed with a vertical plate 2, a left support plate 4, and a right support plate 10 from left to right. ; The servo motor 1 is installed horizontally on the left vertical surface of the vertical plate 2. The output shaft of the servo motor 1 is connected to the left end of the screw rod 5 through the coupling 3; the left part of the screw rod 5 is installed on the left support plate 4 through the left rolling bearing 4a The right part of the screw rod 5 is mounted on the right support plate 10 through the right rolling bearing 10a; the left ends of the front optical shaft 6 and the rear optical shaft 7 are fixed on the left support plate 4, and the front optical shaft 6 and the rear optical shaft 7 The right ends are all fixed on the right support plate 10, the front opt...

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Abstract

A finger friction test device is mainly structured as follows: a servo motor on a rectangular pedestal drives a sliding table through a leading screw and nut mechanism to slide side to side; the upper surface of the sliding table is connected with a sample stage through a strain-type two-direction force sensor; a three-dimensional acceleration sensor is installed on the sample stage; a sound sensor is arranged; a left connecting rod and a right connecting rod which can rotate and can be fastened are mounted on the pedestal; a finger support block is fixed on the right connecting rod, and the left connecting rod is connected with a finger press block, which can move up and down and can be fastened, through an installation block and a loading plate; and the servo motor, the strain-type two-direction force sensor, the three-dimensional acceleration sensor and the sound sensor are all electrically connected to a control and signal acquisition and processing system. The device of the invention can reliably and accurately analyze and study the relations of test parameters and friction coefficients including friction angle, friction normal force, relative sliding speed, etc., vibration acceleration and acoustical signals when the finger is in contact friction with a substance, thus providing the basis for surface design of relevant products and touch simulation design of an intelligent robot.

Description

Technical field [0001] The invention relates to a finger friction test device. Background technique [0002] Finger tribology is an important research topic of body surface in biotribology. Finger contact and friction behavior can be seen everywhere in human activities, such as the operation of buttons, joysticks, etc., touch operations on the touch screen, unscrewing the bottle cap, using the keyboard, and the mouse. In these behaviors, the fingers will rub against various materials due to touch and sliding, which will affect the fingers and cause the skin of the fingers to deform, such as: fingers and labor production tools, sports goods, etc. ; The comfort of friction between fingers and touch screen and other materials. Therefore, it is necessary to test and study the laws of friction force vector and vibration acceleration vector when the finger is in contact and friction, that is, the friction mechanics characteristics of the finger. Thus, according to the measured frict...

Claims

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Application Information

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IPC IPC(8): G01N19/00
CPCG01N19/00Y02T90/00
Inventor 莫继良张猛徐敬业王晓翠朱旻昊周仲荣
Owner SOUTHWEST JIAOTONG UNIV
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