An offset algorithm is important to the contour-parallel tool path generation process. Usually, it is necessary to offset with islands. In this paper a new offset algorithm for a 2D point-sequence curve (PS-curve) with multiple islands is presented. The algorithm consists of three sub-processes, the islands bridging process, the raw offset curve generation… (More)
Thermoelectric energy harvesting is emerging as a promising alternative energy source to drive wireless sensors in mechanical systems. Typically, the waste heat from spindle units in machine tools creates potential for thermoelectric generation. However, the problem of low and fluctuant ambient temperature differences in spindle units limits the application… (More)
As the biocompatible materials, hydrogels have been widely used in three- dimensional (3D) bioprinting/organ printing to load cell for tissue engineering. It is important to precisely control hydrogels deposition during printing the mimic organ structures. However, the printability of hydrogels about printing parameters is seldom addressed. In this paper,… (More)
As a pump-free and lightweight analytical tool, paper-based microfluidic analytical devices (µPADs) attract more and more interest. If the flow speed of µPAD can be programmed, the analytical sequences could be designed and they will be more popular. This reports presents a novel µPAD, driven by the capillary force of cellulose powder, printed by a desktop… (More)
The authors wish to make the following corrections to this paper . The authorship should be The authors would like to apologize for any inconvenience caused to the readers by these changes.
• Uniform scallop tool path has been generated via cutting simulation. • Grass/CC rings are calculated both in parametric and 3D Euclidean space. • Optimized methods are used to fast calculate the grass/CC ring. • The method is free of local geometry assumptions; thus is more precise. • The method is generic for any cutter, parametric surface and tool path… (More)