Professional Classification of Hand Tools

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As the name implies, hand tools are tools that people use when working by hand. They are a classification of the hardware industry. They are used in decoration. They are generally used in special environments, such as flammable, explosive, and extremely harsh conditions. Consumables, the specific purchase volume and purchase frequency will need to be analyzed in detail.

 

Classification of hand tools

Hand tools can be divided into wrenches, pliers, screwdrivers, tape measures, hammers, sockets, cutting tools, scissors, sets, and auxiliary tools such as tool carts. Each type is different. Model. Wrenches include open-end wrenches, double torx wrenches, ratcheting combination wrenches, combination wrenches, tubing wrenches, T-type socket wrenches, cross socket wrenches, adjustable wrenches and other categories; pliers include wire pliers, needle-nose pliers, diagonal pliers, Retaining ring pliers, slip joint pliers, water pump pliers, pipe pliers, power pliers and other categories; screwdrivers have a word, cross, Pozi, hexagon, pattern and other categories; sockets are 1/4″, 3/8″ and 1/2 “Three specifications,” are expressed in inches; at the same time, each specification is divided into 6-point socket and 12-point socket; the socket types are divided into pneumatic socket and manual socket; hammers include claw hammer, fitter’s hammer, and round Head hammer, rubber hammer and installation hammer are divided; cutting types include files, diamond files, tin snips, aviation scissors, utility knives, square pipe saws, pipe cutters, bolt cutters, etc.; in terms of material, there is chrome vanadium steel , Carbon steel, alloy steel, etc.

 

Wrench: Use the principle of leverage to turn bolts, nuts, screws, and other threads. Usually, a clamp handle is made at one or both ends of the handle. When using, apply external force to the handle along the thread rotation direction to turn the bolts and nuts. Openings or sleeve holes for holding bolts and nuts.

 

Hammer: Used to strike an object to move or deform it. It is often used to strike a nail, correct or knock an object open. A common hammer is a construction method with a handle and a metal top. The top is a flat surface that is easy to hit, and the other side is a hammer head, with horns and wedge shapes, which can pull out the nails.

 

Screwdriver: Used to screw screws, usually with a thin wedge-shaped head that can be inserted into the slot or notch of the screw head, and a hand-held handle. When in use, align the special-shaped end of the screwdriver with the recess on the top of the screw and fix it, and then rotate the handle.

 

Tape measure: The most commonly seen is steel tape measure, which is commonly used in construction and decoration, and is used for marking lines such as tenon lines, starting lines, and groove lines. Specifically, it can be divided into tape measure, fiber tape measure, waist measurement and so on. Luban ruler, Feng Shui ruler, and Wen Gong ruler are also steel tape measures.

 

Pliers: used to clamp and fix workpieces or bend, twist, or cut metal wires. The shape is V-shaped, including handles, jaws and jaws. When using, place the jaws toward the inside and stretch your little finger between the two pliers handles. Hold the clamp handle and open the clamp head to clamp the object.

 

Wire pliers: pliers and cutting tools. The tooth opening is used to tighten and loosen the nut. The knife edge is used to cut the rubber or plastic insulation layer of the flexible wire. The guillotine can cut off the steel wire and other metal wires, with a rated voltage of 500V. The insulating plastic of the insulating sleeve can cut the wire.

 

Needle-nosed pliers: used to cut single-stranded and multi-stranded wires with small diameters, and to strip plastic insulation and bend loops for single-strand needle-nose pliers wire joints, covered with insulating sleeves with rated voltage 500V, suitable for Small space. Use needle-nose pliers to bend the wire connector to first fold the end of the thread to the left, and then bend it clockwise to the right against the screw.

 

Wire stripper: The pliers handle is covered with an insulating sleeve with a rated working voltage of 500V, which is suitable for stripping rubber insulated wires, plastics, and cable core wires. When using, put the thread to be stripped in the cutting edge of the pliers head, and force the two pliers handles to the middle with a moderate force to separate the insulation skin from the core wire.

 

 

Multimeter: It is composed of three main parts: measuring circuit, meter head and transfer switch. It is mainly used to measure current and voltage.

 

Wallpaper knife: The blade is sharp, used to cut wallpapers and the like, hence the name “wallpaper knife”, also known as “utility knife”. It is often used in decoration, decoration, and billboard industries.

 

Electrician’s knife: a commonly used cutting tool, the root of the blade is directly hinged with the handle, and there are scale lines and scale marks on it, which can be used for measurement during cutting. The blades have multiple functions, and only an electrician’s knife is needed to complete the operations of connecting the wires.

 

Hacksaw: It only needs an electrician’s knife to complete various operations of connecting wires. It can cut round steel, angle steel, flat steel and workpieces of smaller sizes. The direction of the saw tooth is to install forward to fix the object. The left thumb of the left hand saw the left side of the saw tooth, and the right hand holds the saw handle. The saw blade and the material plane form an appropriate plane. Angle, push the saw blade back and forth.

 

File: The strip is at an appropriate angle to the plane of the material, and the saw blade is pushed back and forth. There are many fine teeth on the surface, which are hand tools used to file the workpiece. Used for micro processing of metal, leather, wood and other surface layers.

 

Test pen: used to test whether the wire is charged. When using the test pen, be sure to touch the metal part of the end of the test pen with your hand, put your index finger against the cap end of the electric pen, gently pinch the electric pen with your thumb, middle finger, and ring finger, and place the metal tip of the pen. Insert the socket hole.

 

Level ruler: Gently pinch the electric pen and insert the metal pen tip into the socket hole. The spirit level has a horizontal bubble, which can be used to inspect, debug, and measure whether the equipment is installed horizontally. Place the level on the object to be measured. The side of the level bubble is higher. You need to lower the height of the side or increase the height of the opposite side, and adjust the bubble to the center.

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Hand tool selection guide

Whether there are turbid oil stains on the surface. For all hardware products, it must be determined whether the anti-rust technology is well processed. When purchasing, you can check whether the product will leave thick oil stains on your hands and whether it will be sticky on your hands. If you have this product, it is generally unqualified. In addition, it can be distinguished by the sense of smell. If the product has a pungent odor, there is usually an omission in the production. Whether the stamp is clear. Hardware products are usually printed with brand words and labels. Although small, most of the products produced by the factory use stamping technology, and they are pressed before heat treatment. Therefore, the fonts are small but deep concave and very clear. . The fonts of counterfeit products are relatively fuzzy. Due to the rough printing technology, the fonts float on the surface, and some of them can even be easily erased by hand. Whether the outer packaging is clear. The factory brand has dedicated designers to design the outer packaging, and arrange production and production in factories that pass the production conditions. The packaging is very clear from the lines to the color blocks. Part of the imported brand accessory packaging also has a unique design designed to protect intellectual property rights. “Put up your ears” to listen to the sound. Shake the product while listening to see if there is any noise. Most of the counterfeit products are under backward production conditions and are completely hand-crafted in workshops. Impurities such as sand will inevitably be mixed into the production process, which is hidden in the bearing body, so it will make noise when rotating. This is the biggest difference from a genuine brand that strictly enforces production standards and uses machines to operate.

 

Hand tool maintenance method

1. All tools should be checked and maintained regularly. 2. All tools should be equipped with inspection and maintenance record cards, and various maintenance data should be recorded in detail. 3. In case of failure or damage, check and repair immediately. 4. When the tool is damaged, the cause of the damage should be found out. 5. The correct use method should be taught before using the tool. 6. Tools that have not been used for a long time still need to be maintained. 7. All hand tools must be used in accordance with the designed purpose. 8. It is forbidden to use the tool before it is installed securely. 9. Tool maintenance should be implemented in a static state. 10. Do not stab others with sharp tools. 11. Never use damaged or loose tools. 12. The tool has reached the service life or limit of use, and it is forbidden to use it again. 13. When the tool is maintained, the principle of not destroying the original design is the principle. 14. Tools that cannot be repaired should be returned to the original manufacturer for repair.


Post time: Sep-06-2021