Recent Patents on Mechanical Engineering - Volume 14, Issue 2, 2021

Background: In recent times, large diameter plastic pipes have been widely used in many functions because of their unique advantages. These applications include water supply, drainage, heating network, industrial transportation, gas delivery, agricultural irrigation, etc. Therefore, manufacturing large diameter plastic pipes economically and efficiently has now become an important research area. Objective: This pa Read More

Background: With the rapid growth of the elderly population, the phenomenon of shoulder subluxation caused by stroke is increasing. For young people, frozen shoulders caused by works and shoulder fractures caused by accidents are also increasing. With the development and popularization of rehabilitation medicine, more and more people realize that rehabilitation and treatment are equally important. Theref Read More

Background: The non-conductive materials are widely applied in electronics, optics, instrumentation, aerospace, national defense and civil industry because of their strong wear resistance, high hardness and good insulation performance. However, it is difficult for traditional machine methods to process the non-conductive materials. Electrical Discharge Machining (EDM), as a nontraditional advanced processing technology, is an Read More

Background: Space docking technology and space docking mechanism are indispensable parts of modern complex spacecraft and important means to expand satellite functions in the future. However, there is still some technology to be broken through in the research of their buffer and locking, so that the docking mechanism can be better used in the future. Objective: Through the introduction and discussion of the char Read More

Background: In this paper, we present a completely new type of propulsion system where thrust force is created by the helicoidal shape of the hull rather than screw propellers. The method and device have been recently patented. The inspiration comes from nature, the world of bacteria, where some organisms have been using the drilling motion or rotating flagella to move in fluid media for several million years. The hull Read More

Background: As the realization of the flexibility of the wheel handling manipulator, the key technical problem that needs to be overcome is the design of a flexible end effector. Objective: The purpose of this study is to design a flexible manipulator end effector to complete the handling of wheels of different sizes on the flexible production line of wheels. Methods: According to the size range and mass range of the wheel to Read More

Background: The electromagnetic aircraft launch system helps the carrier aircraft accelerate take-off on a short distance on the flight deck. Linear motors are required to have high efficiency and thrust / volume ratio, as the actuator of the EMALS. In addition, linear motors were required to have the fluctuation of the thrust is as small as possible to prevent impact and overstress on the airborne equipment. The thrust perfor Read More

Background: Problems, such as severe hardening and poor processing quality, are present in the cutting process of difficult-to-machine materials. Objective: The aim of this study was to investigate and optimize the machining parameters of 630 stainless steel by using an independently designed 28-KHz double-excitation elliptical vibration cutting process. Methods: Using the AdvantEdge platform and response surface m Read More

Background: The spiral drum is the working mechanism of the coal shearer, whether the design of spiral drum is reasonable or not, will directly affect the cutting performance, which has an important impact on the reliability, productivity and working stability of coal shearer. Objective: In order to improve the working performance of the spiral drum, a program for the structural design and load calculation of the spiral dru Read More

Background: The safety of vehicles has been valued throughout the world, whether it is now or in the future, the automobile safety issue is the hotspot and focus of the research by experts and scholars both at home and abroad. The continuous increase of car ownership not only brings convenience to people's lives, but it also poses a threat to people's lives and security of the property. Objective: Vehicle active safety sys Read More

Background: Assistive exoskeleton robot is required to improve the control of exoskeleton joints. The robust response of all joint controls is planned to improve the performance of joint tracking control. Recent patents of an assistive exoskeleton robot concern to explore the system design and integration have been used. Objective: To design and improve the control performance to gain more stability locomotion of exoskeleton Read More

Background: Friction stir welding is an advanced process that could be used to join dissimilar materials and alloys. However, there are some areas that require some further analysis. This involves the impact of the material positioning on various dissimilar joints. Objective: The purpose of this paper is to investigate the influence of material positioning on the microstructure and the mechanical properties of AA8011/AA6082 and Read More