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94 results about "Wear pattern" patented technology

Axial layered cutting method for turning coarse-pitch threads, tool wear testing method and force-heat load calculating method of tool wear

The invention discloses an axial layered cutting method for turning coarse-pitch threads, a tool wear testing method and a force-heat load calculating method of tool wear for eliminating principle errors caused by radial layered cutting of the coarse-pitch threads. The axial layered cutting method for turning the coarse-pitch threads, the tool wear testing method and the force-heat load calculating method of tool wear are technically characterized in that through the cutting method, a testing tool with a left cutting edge and a right cutting edge is used for axially turning a left thread surface and a right thread surface of a coarse-pitch test piece in a layered mode, wear tests of the tool turning the coarse-pitch threads are conducted through the cutting method, the wear pattern of the tool turning the coarse-pitch threads is obtained, the influence of tool wear on thread machining surfaces is revealed, then a finite element analytical model of the tool is reconstructed according to the flank wear data of the tool and the blunt round radius measurement data of the cutting edges, analysis and calculation of the temperature field and the stress field of the tool are carried out, and the force-heat load change characteristic on the tool wear condition is obtained.
Owner:HARBIN UNIV OF SCI & TECH

Test device and method for researching friction characteristics between tire and actual pavement

PendingCN109612929AExtended service lifeEliminate the influence of other additional loads such as centrifugal forceUsing mechanical meansVehicle tyre testingWear patternRoad surface
The invention discloses a test device and method for researching friction characteristics between a tire and an actual pavement, and belongs to the technical field of detecting equipment. Actual working conditions of the tire with load running on different pavements are well simulated through mechanical structures such as a loading sleeve, a loading sleeve base, a rotary arm and a rack, the test device and method for researching friction characteristics between the tire and the actual pavement can be used for testing a friction factor between the tire and the pavement and researching wear pattern between the tire and the pavement, compression amount of a loading spring can be adjusted through a loading screw according to requirements, and thus a test load is adjusted; meanwhile tire running speed is adjusted through a transmission system; changing is conducted on a slip rotary rate or a slip shift rate between the tire and a pavement through adjusting a connected relation between a tested wheel and an auxiliary wheel, multiple kinds of running conditions of the tire on the pavement are simulated, data such as the load, a rotate speed and a torque are detected in real time through asensor, and thus the friction factor between the tested tire and the tested pavement is obtained by formula calculation.
Owner:西安凯德液压机电有限责任公司
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