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1. Minimum bending radius of plate When the material is bent, on the fillet area, the outer layer is stretched and the inner layer is compressed. When the material thickness is constant, the smaller the inner radius R is, the more serious the tension and compression of the material are; When the tensile stress of the outer fillet exceeds the ultimate strength of the material, cracks and fractures will occur. Therefore, too small bending fillet radius should be avoided in the structural design of bending parts. The minimum bending radius is specified for this purpose. L bending radius refers to…

When designing product parts, the problem of easy manufacture must be considered. Try to think of some methods, which can not only make processing easy, but also save materials, increase strength and avoid waste products. Therefore, designers should pay attention to the following manufacturing matters. The manufacturability of sheet metal parts refers to the difficulty of parts in punching, bending and stretching. Good technology should ensure less material consumption, less number of processes, simple die structure, high service life and stable product quality. In general, the biggest impact on the manufacturability of sheet metal parts is the performance of materials,…

Opening Preface: Sheet metal (metal plate;; sheetmetal), a processing technology, has not yet had a relatively complete definition of sheet metal. According to a definition in a foreign professional journal, it can be defined as: sheet metal is a comprehensive cold working process for sheet metal (usually less than 6mm), including shearing, punching / cutting / compounding, folding, riveting, splicing, forming (such as automobile body), etc. Its remarkable feature is that the thickness of the same part is the same. Sheet metal has the characteristics of light weight, high strength, conductivity (which can be used for electromagnetic shielding), low cost…

Some time ago, there was an article on wechat that "Japan will silence the whole world in six seconds with such a gentle press" and burst the circle of friends. In the article, a short video was sent to put the two iron blocks together. With a gentle press of your finger, they were tightly combined The video made people marvel at the seamless cooperation of the two parts. The article introduced that such technology came from a Japanese township enterprise with only 18 employees, boasting that this Japanese mold factory is an exclusive precision technology, and it is unclear…

The reducer, the core component of industrial robot, is the core of mechanical transmission. The speed and accuracy of robot are related to the reducer. The reducer used by industrial robot mainly includes harmonic reducer and RV Reducer. 1、 Harmonic reducer 1. The motor shaft is connected to the wave generator, and the manipulator is connected to the hard base of the flexible gear ring 2. The flexible gear ring has n gear positions less than the rigid gear ring 3. The wave generator rotates once, and the flexible gear ring moves n gear positions 4. High deceleration ratio can…

With the development of science and technology, machining technology is no longer limited to turning, milling, grinding and drilling, and more processing technologies have emerged, which meet the functions of product production and manufacturing and make up for the shortcomings of traditional processing; Now let's learn about these new machining processes! 1、 Metal injection molding (MIM) 1. Introduction: metal injection molding (MIM) is a near net shape forming process suitable for producing small, three-dimensional complex shapes and products with special performance requirements. This technology is a new near net shape forming technology of powder metallurgy, which introduces modern plastic injection…

Thread is the most common method of connecting mechanical parts, and thread hole processing is often at the end of the whole production process. Once the processing is unqualified, it will lead to the scrapping of components or more troublesome reprocessing. Therefore, it puts forward higher requirements for the safety of the process. There are all kinds of cutting tools for machining threaded holes. The common ones are thread turning tool, tap, extrusion tap, thread milling cutter and so on. How to select the correct machining tool? The choice of cutting tools is actually the choice of machining methods. The…

The deformation of thin-walled parts in turning is multifaceted. The clamping force when clamping the workpiece, the cutting force when cutting the workpiece, and the elastic deformation and plastic deformation when the workpiece hinders the cutting tool, resulting in thermal deformation due to the increase of the temperature in the cutting area. The cutting force is closely related to the cutting parameters. From the "metal cutting principle", we can know that the back cutting amount AP, feed rate f and cutting speed V are the three elements of cutting parameters. During the test, it is found that: 1) When the…

The driving gear has sharp teeth, which can bite into the wire, and then rely on the rotation direction of the gear to push the wire forward and backward. If the wire cannot be moved, but the gear continues to rotate, the gear may scrape some plastic off the wire, so that the gear has no place to grasp the wire. Many people call this situation "planing". Because too much plastic has been shaved off, the extrusion function is abnormal. If this happens to your printer, you will usually see many pieces of plastic scattered on the ground. You will…

Color is an indispensable element in our life. Make the world colorful and colorful. With the progress of science and technology and the improvement of living standards, the importance of color in people's life has become more obvious. I once went to a supermarket and faced with napkins of various brands. Finally, I decided to buy the one with the most beautiful color and the best packaging. This is the influence of color on the commercial society. In today's marketing, color has increasingly become an important link in consumers' purchase of goods. It has become a consensus that good colors…