Special grade screw function

In our daily life, screws can be seen everywhere, whether it is household appliances, computers, vehicles, buildings, all kinds of screws will be used,Special ScrewsIt is a very representative mechanical element.

When it comes to the role of super screws, the first thing that comes to mind is to use super screws to connect the parts to the parts, so that the parts will not be separated. This "linkage" is one of the representative functions of the screw. However, the same effect can be achieved by using adhesive instead of screws to connect the components. What is the difference between this connection method and screw connection method?

The super screw is a tool that uses the physics and mathematics of the circular rotation and friction of the inclined surface of the object to gradually tighten the parts of the object. Screw is the common saying of fasteners, everyday colloquies. Special screws are indispensable industrial supplies in daily life: small screws used in cameras, glasses, clocks, electronics, etc.; general screws for televisions, electrical products, musical instruments, furniture, etc.; as for engineering, construction, and bridges, Large screws and nuts are used; transportation appliances, airplanes, trams, automobiles, etc. are used together. Screws have an important role in industry, and as long as there is industry on Earth, the function of screws is always important.

We used an adhesive to stick the two parts together so that they would never come apart. The metal parts are fused together in the same way so that the two parts do not separate.

Instead, the two parts can be tightly connected together with screws, and if you want to separate them, you can easily unscrew them with the right tools.

Tighten quickly, tighten accurately, unscrew lightly, and unscrew happily. If you think about it, it's very difficult. However, if the screws are used properly, this contradiction will occur. "How to use screws correctly" is a very difficult problem, which is the same as "how to choose the right screw among many screws. There is an inseparable relationship. To do this, you need a wealth of knowledge.

In addition, super screws have other uses besides tightening. When the screws delivered by the machine tool reach a certain length together, since they are threaded, they can be moved by turning the parts close to them. To convert rotary motion into linear motion, this is what the "motion" of the spiral does. Can we imagine other uses for screws?

Put the screw into the micrometer for accurate length measurement, turn the handle screw to rotate, and measure the length by moving the amount. In this way, the special grade screw also has the function of measurement.

We must first understand the principle and performance of the expansion super screw. Expansion super-grade screws generally refer to metal expansion screws. In fact, there are plastic expansion screws, but they are not commonly used, so we generally think that they are metal. The fixed expansion screws mainly use the wedge-shaped slope, which can cause the expansion screws to generate friction and grip. force. One end of the screw is threaded and the other is tapered. The expansion super screw is wrapped with an iron sheet. Half of the iron sheet cylinder has several incisions. Put them together into a hole in the wall. Then lock the nut. The nut pulls the screw out and pulls the taper into the iron sheet cylinder. The iron sheet cylinder is expanded and tightly fixed to the wall. However, its fixation is not very reliable. If there is a large vibration, it may loosen. For safety reasons, try not to install ceiling fans, etc., which may be dangerous if you are not careful.