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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…

Preface With the continuous progress of fiber laser technology and the continuous decline of laser processing cost, there is an obvious trend in the sheet metal processing market, that is, gradually transfer the products below the medium batch originally used for stamping by NC punch to NC laser cutting machine. However, people in the industry also clearly realize that NC punch still has its irreplaceable advantages, which are mainly reflected in the following points: sheet metal processing combined with NC stamping; Large quantities of non cutting and punching sheet metal processing; Sheet metal processing with dense mesh. At present, these…

Taking metal or alloy parts as anodes, oxide films are formed on their surfaces by electrolysis. Metal oxide film changes the surface state and properties, such as surface coloring, improving corrosion resistance, enhancing wear resistance and hardness, protecting metal surface and so on. The thin layer of oxide film has a large number of micropores, which can absorb various lubricants and is suitable for manufacturing engine cylinders or other wear-resistant parts; The membrane has strong microporous adsorption capacity and can be colored into various beautiful and gorgeous colors. Non ferrous metals or their alloys (such as magnesium, aluminum and their…

During printing, through the extrusion of the scraper, the ink is transferred to the substrate through the mesh of the picture and text part to form the same picture and text as the original. Screen printing equipment is simple, easy to operate, simple printing and plate making, low cost and strong adaptability. Screen printing has a wide range of applications. Common printing materials include: color oil paintings, posters, business cards, binding covers, commodity signs, printing and dyeing textiles, etc. In the machining industry, everyone must be familiar with silk screen printing. But what are the advantages and characteristics of silk…

Water transfer technology is a kind of printing that uses water pressure to hydrolyze the transfer paper / plastic film with color pattern. With the improvement of people's requirements for product packaging and decoration, water transfer printing is used more and more widely. The principle of indirect printing and perfect printing effect solve the problems of surface decoration of many products. Process flow of water transfer printing: making water transfer paper → soaking the paper → pattern transfer → drying → finished product 1. Production of water transfer printing paper: the negative film is output for printing plate after computer…

Painting is the general name of surface coating processing of industrial products. Painting processing is generally used for plastic Painting, silk screen printing and pad printing processing; Color modification and silk screen printing of EVA, rubber and other shoe materials. An injector is required to complete the process operation. You can choose oil spray matte, semi matte, high gloss, etc. according to your needs. Why Painting? The Painting on the surface of the hand board can make it more beautiful. To some extent, the Painting effect reaches the extreme, which can make consumers have a better visual impact and promote…

Strictly speaking, sand blasting is a kind of skin texture, which can be divided into two effects: concave convex effect and concave convex effect. The hand mold sandblasting is also powered by compressed air to form a high-speed jet beam to spray the sprayed materials (copper ore, quartz sand, emery, iron sand and sea sand) to the surface of the workpiece to be treated at high speed, so as to change the appearance or shape of the workpiece surface. Due to the impact and cutting effect of abrasive on the surface of hand board workpiece, the surface of hand board…