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Spinning is a process method that uses a tool to continuously apply pressure to a very small part of the workpiece to gradually shape it. Spinning deformation is a local progressive deformation, and its progressiveness is similar to swing rolling. According to the deformation characteristics of spinning, the spinning process can be divided into two categories: ordinary spinning and high-power spinning [1]. Using software to simulate the high-power spinning process can clearly obtain the required data and effectively prevent defects in actual production. Software modeling and simulation  In this paper, the metal forming software Simufact is used to simulate the high-power spinning process. The simulation process ignores the influence of gravity and metal inclusions, and ignores the influence of temperature Read more

In order to machine 3 mm thick large-size cylindrical Al alloy part with curvilinear generatrix followed by straight- walled section, power-conventional spinning combination method supplemented with heat spinning via horizontal CNC spinning machine was explored through process tests, namely, power spinning of the conical curve section at the small end fol-lowed by multi-pass heat conventional spinning. It has been proved that power-conventional spinning combination method is feasible for the machining of large-size Al alloy cylindrical parts with cone-curved profile. Part blank design, necking amount of conventional spinning and part expanding are primary factors affecting the success of the above spinning processes. A certain aluminum alloy cylindrical part is a large-sized cylindrical part with a small taper curved generatrix connected to Read more

A metal lathe is a fundamental machine tool used in metalworking for shaping metal and other materials through rotational cutting. It has been essential in manufacturing and engineering for over a century, evolving from manual lathes to sophisticated computer-controlled systems. The speed at which a metal lathe spins, or its rotational speed, is a critical parameter that influences machining efficiency, surface finish, tool wear, and overall productivity. This article provides a comprehensive overview of the factors affecting lathe speed, the types of lathes, and the implications of different speeds in metalworking. Historical Context Of Metal Lathe Rotation Speeds The metal lathe’s origins can be traced back to ancient Egypt and Greece, where primitive forms of the lathe were used for Read more

Spinning, a fundamental process in the textile and metalworking industries, involves the manipulation of materials to create fibers or shapes through rotation. There are several variations of spinning, with power spinning and normal spinning being two primary techniques. This article elucidates the differences between power spinning and normal spinning, highlighting their unique applications, advantages, and processes. Normal Spinning Normal spinning, also known as conventional spinning or hand spinning in the context of textiles, is a traditional method employed for centuries. In metalworking, normal spinning refers to a technique where a metal disc is rotated at high speed and formed into an axially symmetric part. Process Textile Spinning: Material Preparation: Raw fibers, such as cotton or wool, are cleaned and carded Read more

The newly developed integral hollow shaft roller is created by directly reducing and spinning the ends of a thin-walled tube to form the shaft neck. Through diameter-reduction spinning experiments on the rollers, this paper summarizes the deformation process of thin-walled tubes, analyzes the plastic deformation laws, forming mechanisms, changes in metallic properties during the spinning process, and methods to control and prevent defects in diameter-reduction spinning. Belt conveyors are widely used in mines, ports, and other work sites, with rollers being their primary component and used in large quantities. Addressing defects in the existing roller structures, we have developed a new type of roller with a hollow shaft. The structure of the new roller is shown in Figure 1. The Read more

In industrial control systems, devices such as proximity switches and photoelectric switches are commonly used for positioning tasks. With the continuous development of industrial control, rotary encoders have emerged, characterized by: Informationization: Besides positioning, the control room can also determine the exact position. Flexibility: Positioning can be flexibly adjusted in the control room. Ease of Installation and Safety: They are easy to install, safe, and have a long service life. A rotary encoder can measure distances ranging from a few micrometers to tens or hundreds of meters. Using a single rotary encoder can eliminate the need for multiple proximity switches and photoelectric switches, addressing issues like complicated mechanical installations, susceptibility to damage, and interference from high temperatures and moisture. Due Read more

Metal forming processes are fundamental to manufacturing industries, offering various techniques to shape metals into desired forms. Among these, metal spinning and deep drawing are two widely utilized processes. Each method has distinct characteristics, advantages, and limitations, making them suitable for specific applications. This article delves into a comprehensive comparison of metal spinning and deep drawing, exploring their history, techniques, applications, advantages, and disadvantages. A Comparison Chart Of Metal Spinning and Deep Drawing Here is a detailed comparison table of Metal Spinning vs. Deep Drawing: Aspect Metal Spinning Deep Drawing History Ancient origins, manual processes, industrial evolution Developed in early 20th century for containers and automotive parts Basic Technique Rotating a metal blank and forming it against a mandrel Stretching Read more