What’s the Technical Principle of Screwdriver?

Screwdrivers used to pry the paint cover leverages the working principle. Power point to the fulcrum of the greater the more energy, so long screwdriver than short screwdriver more effort.

Screwdrivers used to tighten the screw when working with the wheel. When the wheel is larger, the more effort, so the use of coarse screwdriver screwdriver than the use of thin screw tightening more effort.

Classification of Screwdriver

1, Ordinary screwdriver

Screwdrivers made of headstock are easy to prepare and can be used as long as they are taken out. However, since screws have many different lengths and thicknesses, sometimes it is necessary to prepare a large number of different screwdrivers.

2, Combination of screwdrivers

A screwdriver to separate the head and handle the screwdriver, to install different types of screws, simply replace the screwdriver head can be, do not need to bring a large number of screwdrivers.

1, Straight. This is the most common one. The head model has a word, cross, rice word, T type (plum type), H type (hex), etc.

2, L-shaped. More common in the hexagonal screwdriver, the use of its longer rod to increase torque, so more effort.

3, T-shaped. Auto repair industry more applications.

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Why Screwdrivers Have No Round Head?

A screwdriver, a tool used to turn a screw to force it into place, usually has a thin wedge head that can be inserted into a slot or notch in a screw head.

No screwdriver head, because the round head did not twist. The word is to ensure that there is a twist, while the cross can make the power distribution more evenly.

According to the power source to have a manual screwdriver and electric screwdriver; according to the first or the cutter head to divide the word (flathead) and Phillips (phillips).

High-quality screwdriver head is made of relatively high hardness spring steel.

A good screwdriver should be hard but not brittle, hard and have a tail. When the screw head opening bald slipping slippery hammer hammer can be used to strike the screw slot tick ticking deeper, easy to unscrew the screwdriver unscathed; screwdrivers are often used to pry things, it requires a certain degree of toughness Bend not fold. Overall hope that the head of the screwdriver hardness greater than HRC60, not easy to rust.

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Classification of Screwdrivers

The previous article has described the screwdriver details, this article describes the simple classification of the screwdriver. From its structure and shape, screwdrivers are usually divided into three categories.
The first is a straight screwdriver. This is the most common one kind of screwdriver, head model has a word, cross, T-type, H-type (hexagonal), and so on.
The second is a L-shaped screwdriver. The most common is the hexagonal screwdriver, which uses its longer rods to increase the torque, thus saving effort.
The third is a T-shaped screwdriver. Mainly used in the automotive industry.
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