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Original title: "screwdriver, screwdriver, screw chisel, screwdriver why there are so many names, what do you call it there?" "

A screwdriver, one of the four tools, must be a familiar tool, and almost every household has a few at home for use at any time.

In fact, a screwdriver is a tool specially used to screw screws, and it seems that the structure is relatively simple. The screwdriver placed at home can not be used several times a year, and no one cares about it, but sometimes a small screwdriver can't do without it.

A screwdriver is a tool used to turn a screw to force it into place. The head is usually shaped according to the screw head and can be inserted into the slot or notch of the screw head to loosen or tighten the screw.

There are many names for a screwdriver, for example, the dialects of Beijing, Tianjin, Hebei, Shandong, Jin, Henan and Shaanxi are called "screwdrivers"; Anhui and Hubei are called "screwdrivers", the central and western regions are called "knives", and the Yangtze River Delta region is called "chisels". This is because each place has given these names to the screwdriver according to its dialect and usage habits.

And "screwdriver" is the most frequently called name, no matter where it can be understood.

In fact, the standard name of the screwdriver is screwdriver, which is introduced in the national standard GB / T 4625-1998. This name sounds a little strange now, but it is still easy to understand.

So what's the name of the screwdriver in your hometown?

The history of screwdrivers was first recorded in medieval Europe. After screws were invented and gradually popularized in industry, screwdrivers were invented and used. With the increase of screw specifications and styles, it also led to the improvement and diversification of screwdrivers, so the development of screwdrivers is the history of screwdrivers.

Early screws were made of wood and were used in wine presses and olive oil presses; metal screws and nuts did not appear until the fifteenth century, mainly to hold two objects together.

In 1908, the Canadians invented square slotted screws, which were considered to be "the first grooved fasteners suitable for production". The square slots on the screws were used for fastening, and the square head screwdriver was soon invented.

The word and Phillips head screws were invented in 1932 and were soon widely used in automobile manufacturing. With the emergence of these screws, word and Phillips screwdrivers were invented one after another.

With the rapid development of modern industry, many changes have taken place in the handle and stem of the screwdriver. Affected by the use and manufacturing requirements, the original screwdriver is riveted with a wooden handle. Even now, there are still some factories producing this kind of screwdriver. We call it a screwdriver. Now, the screwdriver has derived countless styles.

Types of screwdrivers are classified according to working head type.

One-word screwdriver, also known as slotted screwdriver, flat head or flat-edged screwdriver, is the most commonly used form of screwdriver that works on a simple screw slot.

This kind of knife head is flat and comes in different sizes to accommodate different sizes of screws.

The opening of a small word screwdriver is so small that it almost becomes a tapered tip, so care must be taken when using this screwdriver, as hard pressure may cause the screwdriver to slip out of the screw slot, scratch the surface of the material or hurt the body.

Phillips screwdriver Phillips screwdriver is also called Phillips head because of its Phillips head, and the head is semicircular and not as sharp as a word screwdriver.

The Phillips screwdriver has four blades, which means that the screwdriver can be inserted deeper into the screwdriver instead of sliding out from the side like a word screwdriver.

This also means that more torque can be applied to the screwdriver, which is why Phillips screwdrivers are used in almost all fields and are the most popular screwdrivers.

The meter screwdriver is considered to be an upgraded version of the Phillips screwdriver and is made to increase the torque of the screwdriver head.

The rice screwdriver is characterized by four edges radiating from the center, and there will be a shallow edge between any two edges to increase contact with the screw head, which can exert more rotating force without the risk of skidding.

And when the correct pressure is applied, the rice screwdriver is less likely to damage the head of the screw. this screwdriver is usually available in 1 to 3 sizes.

Plum blossom screwdriver has now become the most widely used screwdriver, which is also because this kind of trapped screws are used more and more.

This screwdriver is characterized by a concave hexagonal blade, but the head is rounded, which increases the contact area between the screwdriver head and the screw head, and increases the torque, so the screwdriver can withstand the maximum torque and is not easy to slip out or break.

Star screwdrivers come in many sizes, and the commonly used sizes are T15 to T40.

The Y-shaped screwdriver is also known as a three-pronged or three-point screwdriver. The Y-shaped screwdriver is characterized by three blades extending from the center point at an angle of 120 degrees.

These screwdrivers and screws are very popular in the electronics industry, such as plug-in rows, mobile phones, game consoles and other devices.

U-shaped screwdriver has a double-pointed head in front, which looks very strange, so it is vividly called snake eye, pig nose, barbecue fork and other names, which are mainly used to screw flat screws. there are two tiny rectangular grooves on both sides of the screwdriver. You need this kind of screwdriver to disassemble.

Because it is very safe to use, these screwdrivers are usually used for the maintenance of various electrical appliances, cars and elevators.

Square screwdriver this is the earliest invented screwdriver. Although this screwdriver is not commonly used, it is sometimes considered to be the highest of all screwdrivers because of its high torque.

Because the square screwdriver has no tip, it is unlikely to fall out of the groove, which means that a very large rotating force can be applied.

Because it is very durable, although it is rarely used in household toolkits, it is still widely used in industries such as furniture and automobiles.

Inner / outer hexagon screwdriver this screwdriver has an inner hexagon sleeve instead of a blade and a pointed head, all of which are also known as inner hexagon wrenches.

The inner hexagonal sleeve screwdriver can be directly used to tighten hexagonal bolts, as well as using screwdriver heads of various specifications, which can be used only by inserting the required screwdriver into the hexagonal sleeve. An inner hexagonal sleeve screwdriver and batch head can complete all the work of the screwdriver.

The one above is an outer hexagon screwdriver, and there is also a kind of inner hexagon screw that also has a corresponding screwdriver. There is a strange phenomenon. The following one is used to screw hexagon screws, but everyone seems to call it a hexagon wrench instead of an inner hexagon screwdriver. The editor feels that it may have something to do with the method of use. This screw is pulled left and right, the same as the use of a wrench.

Classification by function ordinary screwdriver this is the kind commonly used in our home, is the screw directly installed in the handle, the general handle is made of plastic injection molding.

Usually according to different screw specifications, and choose the corresponding screwdriver, so the home needs to prepare a lot of screwdrivers of different specifications.

Insulated screwdriver is a screwdriver specially designed for use in live and high-voltage operations. in general, the handle and part of the handle of the insulated screwdriver are wrapped in insulating materials, except that part of the tool holder is exposed metal, which can effectively prevent the high voltage arc caused by the contact between charged metal and the outside world, thus improving the safety of the screwdriver.

Because this kind of screwdriver needs to work under strong electricity, it needs to pass strict insulation testing to ensure its insulation performance and ensure the safety of users.

Percussion screwdriver in order to make the screwdriver have the function of tapping and digging, a screwdriver with a screwdriver rod through the handle is designed, so this kind of screwdriver is also called a through-the-heart screwdriver.

The screw rod passing through the handle not only has the tapping surface, the handle will not crack when tapping, but also has the function of screwing.

The cutter bar of the partial percussion screwdriver is also equipped with hexagonal bolts, which can be screwed with an open wrench or socket wrench to produce more torque.

Precision screwdriver is a screwdriver with a smaller head. At first, this kind of screwdriver is mainly used for the maintenance and disassembly of watches, glasses and other precision products, so it is also known as "watch screwdriver". Now it is widely used to disassemble small products.

Because the specification of the whole screwdriver is relatively small, it not only needs high precision in the manufacturing process, but also requires the Arbor to have considerable strength and toughness, and has higher requirements for the whole manufacturing process and materials.

With the development of industry, in order to meet the requirements of various industries, the types and specifications of screwdrivers are more and more.

In industry, screws are widely used in various industrial fields, from ships, airplanes to small glasses, mobile phones can not do without screws, people call it "industrial rice", and the product that twists these industrial rice is a screwdriver, so the screwdriver has made a great contribution to the development of the whole industry.

The picture in this article is taken from Youtube "History of the Screwdriver".

This article is from the official account of Wechat: manufacturing principle (ID:zhizaoyuanli), author: Lao Zheng

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