What is the tolerance range of precision screws?
What is the tolerance range of precision screws?
new type of screw includes a fixing object and a screw body composed of a nut, a fixing piece and a screw rod. An outer gear ring is fixedly sleeved on the fixing piece, and a support plate is arranged on the lower side of the outer gear ring. The upper side of the support plate is connected with a mounting frame through an adjustment mechanism, the inside of the mounting frame is connected with the outer gear ring through an anti-drop mechanism, and a mounting plate is fixedly connected to the side of the support plate close to the fixed object, and the mounting plate is clamped The coupling mechanism is connected to the fixture.
1. No matter what industry it is, the business is more difficult, and it is still more difficult for the fastener business. After a long period of contact, I realized that the business of making fasteners also requires a lot of attention to be able to do it well. In the business of making fasteners, not just any person can do it, and they all have certain requirements. 2. When it comes to the business of fasteners, no matter what kind of salesperson, the first thing you must have is enough patience, so that we can do this job with confidence, and some customers are not difficult to follow us. Communication, as long as we have enough patience, then we have a greater chance of being able to cooperate with customers on fasteners, and in the face of some relatively large fastener customers, sometimes it is not that we can get it all at once , Sometimes if you want to cooperate, you need to go through multiple contacts to promote a cooperation, so as a salesperson, enough patience is essential. 3. Then, as a fastener salesman, what you need to have is perseverance. Sometimes the salesperson is difficult at work. At this time, you need to adjust it in time, so it will not lead to the phenomenon of giving up easily, after all As a salesman, only through our own efforts can we have the opportunity to receive orders for fasteners from customers. What we need is to be able to face difficulties and move forward bravely. 4. The most important thing for fastener salesmen is to pay attention to details. If we can do a good job in the details, then sometimes we are not far from success. The above are several requirements that need to be met in the fastener business.
1. Ordinary outer hexagon - widely used, characterized by relatively large tightening force, the disadvantage is that there must be enough operating space during installation, and adjustable wrench, open-end wrench or glasses wrench can be used during installation, all of the above wrenches require a large amount of space. operating space. 2. Cylindrical head hexagon socket - is the most widely used of all screws, because it has a relatively large tightening force, and can be operated with a hexagon wrench. It is very convenient to install and is used in almost all kinds of structures. The appearance is more beautiful and neat. The disadvantage is that the tightening force is slightly lower than the outer hexagon, and the inner hexagon is easily damaged due to repeated use and cannot be disassembled. 3. Pan head inner hexagon - rarely used mechanically, the mechanical properties are the same as above, mostly used in furniture, the main function is to increase the contact surface with wooden materials and increase the ornamental appearance. 4. Headless inner hexagon - must be used in certain structures, such as the top wire structure that requires a large top-tight force, or where the cylindrical head needs to be hidden. 5. Countersunk head hexagon - mostly used in power machinery, the main function is the same as the inner hexagon. 6. Nylon lock nut - a nylon rubber ring is embedded in the hexagonal surface to prevent the thread from loosening, and it is used on strong power machinery. 7. Flange nuts - mainly play the role of increasing the contact surface with the workpiece, mostly used in pipes, fasteners, some stamping parts and casting parts. 8. Ordinary hex nut - the most widely used and one of the most common fasteners.
Ordinary snap-type retaining rings have ears on their structure, which cause interference with the inner parts. If the ears are not provided, it is very troublesome to disassemble. For the very demanding aerospace field, ordinary snap rings cannot meet their requirements.
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