A hand tool is a small tool that is held by the hand and controlled by manpower or human hands to act on an object. For hand cutting and auxiliary decor. Generally, there is a handle, easy to carry.
Hand tools are a tool for transforming and conquering nature, which was created and developed at the same time as people. The original hand tools were extremely simple, such as wooden sticks and angular stones. After people were able to finely work stones or animal bones into stone axes, stone knives and bone needles, they began to use more sophisticated hand tools. Around 4000 BC metallurgical technology began to appear, which contributed to the separation of agriculture and crafts, and also improved the manufacture of hand tools. Modern hand tools still retain the characteristics of the original hand tools, such as the hand pliers created in 300 AD and the entire set of wrenches for tightening and loosening screws that are still in use today.
With the development of modern mechanical engineering and metallurgical technology, hand tools are constantly updated and improved in terms of shape design and use of materials, fully considering design factors such as the mechanics and functions of the human body; with the development of the social economy and industrial production. With a fine division of labor, the production of hand tools becomes more specialized and the functions more diverse. Special auxiliary hand tools have emerged, such as vehicle tools and electronic tool assembly tools.
Hand tool is a relative term that basically refers to the difference from machine or automatic tools. It got its name because most driving methods are manual. Some tools can be used manually or installed on machines or automatic mechanisms, so there is no strict distinction regarding the tools themselves.
Hand tools can be divided into cutting tools and auxiliary decoration tools according to their functions, as well as screw and nut assembly hand tools (such as wrenches, screwdrivers), construction hand tools, gardening hand tools ( scissors, sickle). ), moss knife, branch shears, etc.) plumbing hand tool, measuring hand tool, woodworking hand tool, welding hand tool, etc. Common hammers, files, knives, pliers, saws, screwdrivers, wrenches and diamond tools.