Recent Patents on Mechanical Engineering - Volume 14, Issue 3, 2021

Background: This work presents a review of international patents dealing with the measurement of the induced fatigue of electrical stimulators. Sometimes muscles cannot move or have limited movement because of an injury such as Spinal Cord Injury and are in need of therapy. A complement of such therapy is Electrical Stimulation. A device sends electrical pulses to the muscle in order to generate contractions. S Read More

Background: Hydrostatic bearings possess the advantages of strong bearing capacity, good stability, small friction coefficient, and long life. The performance of liquid hydrostatic bearings directly affects the accuracy and efficiency of CNC machining equipment. The performance is conducive to the development of CNC machine tools towards high speed and heavy load, so it is necessary to sort out and summarize the existing Read More

Background: The eccentric load has a great influence on the bearing capacity, which can easily lead to a decrease in bearing capacity or even the destruction of working conditions. Objective: The prospects for bearing eccentric load research are put forward, hoping to provide some help for the development and optimization of bearings. Methods: According to recently published patents and journal papers, the theoretical and Read More

Background: In order to enable robots to complete complex tasks, robots are required to have higher intelligence and adaptability. RVSC (Robot Visual Servo Control) is an organic combination of machine vision and servo control and is a complex system with strong coupling and nonlinearity, which improves the performance of robots and provides feasible solutions for solving practical problems in many fields. Objective: To re Read More

Background: With a growing demand for blueberries, the planting area of blueberries is also increasing. However, the main method of picking blueberries is the traditional manual picking, so the operation of picking is the most time-consuming and laborious in the chain of production. Objective: By analyzing and discussing the patents of equipment of blueberry picking, some valuable conclusions have been drawn to pr Read More

Background: The motorized spindle preload technology is one of the motorized spindle key technologies, and adjusting the preload according to the working conditions can effectively improve the dynamic performance of the motorized spindle and enhance the machining accuracy. Objectives: Review the preload mechanism development, introduce various preload mechanisms, and show research status in recent years. Then to Read More

Background: Electrochemical Machining (ECM) can machine most conductive materials and is not limited by physical properties of materials such as strength, hardness and toughness. However, the process of ECM is unstable as the structure of tool electrode, electrolyte composition and the machining device of ECM will affect machining accuracy and stability of shaped holes. Therefore, people pay more and more attention t Read More

Background: Heat pump air conditioning technology has broad application prospects and high market value in the field of electric automobiles owing to its increasing performance and energy-saving properties. Pure electric vehicles require high-energy consumption at low temperatures, which seriously affects the popularity of electric vehicles with a heat pump air conditioning system. Objective: The aim of this research is Read More

Background: In the process of high-speed driving, the wheel hub is constantly subjected to the impact load from the ground. Therefore, it is important to estimate the fatigue life of the hub in the design and production process. Objective: This paper introduces a method to study the fatigue life of car hub based on the road load collected from the test site. Methods: Based on interval analysis, the distribution character Read More

Background: With the continuous improvement of spindle speed, and the occurrence of problems, such as chattering, the hot bite of bearings or premature bearing failures during high-speed rotation are gradually exposed. Objective: The purpose of this paper is to explore the problem of premature failure of hydraulic dynamic- static bearing caused by temperature rise and vibration at high speed. Methods: The hydraulic Read More

Background: The parallel mechanism plays an important role in various fields. The multifunctional integrated innovation experiment platform can improve the utilization rate of the mechanism and be applied in many fields. Objective: The main objective of the study is to establish an integrated innovation experiment platform based on the 3-PRS parallel mechanism, which can be used in typical application and related technology Read More

Background: For the cooling system of the traditional new-type engine and new-energy vehicle, the water pump is the core component. If the design of the water pump is not reasonable, the engine will be overcooled or overheated, which will affect the efficiency of the engine. Therefore, it is significant to propose a design method of electronic water pump for automobiles based on active regulation. Objective: In this study, Read More

Background: Cold forging operation is done on small as well as large scale in manufacturing industries. These industries are facing problems such as higher rejection rate of the final product, low productivity, the high number of accidents during production, etc. Objective: The purpose of this research work is to develop a Voice-Assisted Forging System (VAFS) with a lower rejection rate, higher productivity, and lower number of Read More