Broadly speaking, a pneumatic tool is mainly a tool that uses compressed air to drive a pneumatic motor to output kinetic energy to the outside. According to its basic working mode, it can be divided into: 1) Rotary type (eccentric movable blade type). 2) Reciprocating type (Volume piston type) General pneumatic tools are mainly composed of the power output part, the operation form conversion part, the intake and exhaust path part, the operation start and stop control part, the tool housing and other main parts. Of course, the operation of the pneumatic tool must also have an energy supply part, Air filtration and air pressure adjustment parts, tool accessories, etc.
 
Tool classification
Jackhammer (also called pneumatic wrench, pneumatic wrench, pneumatic trigger), pneumatic screwdriver (also called pneumatic screwdriver, pneumatic screwdriver), pneumatic grinder (also called pneumatic polisher, pneumatic water grinder, pneumatic sand mill, pneumatic grinder) , Pneumatic spray gun, pneumatic nail gun, pneumatic pull cap gun, air shovel, pneumatic hammer, shock-absorbing pneumatic saw, shock-absorbing pneumatic file

Oil pressure pulse
Mainly used for the maintenance and assembly of heavy trucks, trolleys and construction machinery or the disassembly and assembly of screws of the same specification

Power output
It is one of the main components of pneumatic tools, mainly composed of a pneumatic motor and a power output gear. It relies on high-pressure compressed air to blow the motor blades to make the motor rotor rotate, output rotational movement to the outside, and drive the entire operation form transformation through the gear Partial exercise. According to whether the stator and the rotor are concentric, air motors can be divided into concentric motors and eccentric motors; according to the number of air intake holes, they can be divided into single air inlet motors, double air inlet motors, and multiple air inlet motors. No matter what type of air motor, it relies on compressed air to blow the motor blades to drive the rotor to rotate. When the motor blades rotate at high speed, they always rub against the inner wall of the stator. It is the most common vulnerable part in the motor. High requirements for the quality of compressed air and whether the compressed air contains lubricating oil molecules;
 
Work form
It mainly converts the rotational motion output by the motor accordingly. In the automobile manufacturing industry, because there are many ways of threaded connection, most of them are rotary motions, of course, there are also linear reciprocating motions. For different types of pneumatic tools, the operation form conversion part is mainly divided into mechanical clutches and planetary gear sets, friction plate clutches and planetary gear sets, hydraulic cylinders, torsion bars and hammer block sets, etc. The above components are all important components based on rotary motion, which determine the torque, speed, and tightening accuracy of the pneumatic tightening tool. Due to its constant clutch, pressure or torque change, its component parts Vulnerable to damage

Intake and exhaust
Obviously, the intake and exhaust passages are the relevant passages for the compressed air to enter and exit, and are the energy supply system that guarantees the normal movement of the motor;

sports
That is, the generally mentioned pneumatic switch is prone to damage due to its direct contact with the operator and external objects at all times and many engineering plastic products;

Energy supply
Compressed air is mainly formed by compressing the atmosphere by an air compressor, and is transported by compressed air pipelines to related gas and electricity, and is pulsating;

Air filtration
Since compressed air is usually transported through pipelines made of seamless steel pipes, during long-term use, rust on the inner wall, moisture, and dust in the compressed air will continue to form. If such compressed air enters the air motor directly without any treatment, the life of the motor will be greatly shortened, resulting in insufficient power output of the entire tool, and unstable, easily causing damage to the motor and other parts. Between the compressed air transported by the pipeline and the pneumatic tools, compressed air filtering and regulating devices must be installed, and the pneumatic triplex undertakes this task. Pneumatic triple parts are mainly composed of barometers, filters, lubricators, pressure regulators and other parts. Among them, the filter has a built-in filter element, which should be maintained and cleaned and replaced regularly after a period of use;

Tool accessories
The tool accessory here refers to the tool that is installed on the body of the pneumatic tool to directly contact the workpiece, and the pneumatic triplet undertakes this task. Between the compressed air transported by the pipeline and the pneumatic tools, compressed air filtering and adjustment devices must be installed, including various pneumatic sleeves, extension rods, conversion joints, cutter heads, etc.; the above-mentioned parts are interdependent, mutually restricted, and cannot be isolated separately There is a realization job.
 
Install system
Air source (air compressor or pressure room) oil-water separator-3/8” (1/2”) quick connector-3/8” 1/2”) test connection- —3/8”(1/2”) quick connector—-pneumatic tool.
 
Tool use
Safety first, use second
Some pneumatic tools may generate reaction torque during use, which puts the operator’s body in a state of tension, affects the balance of the body, and may pinch fingers. Therefore, be especially careful when using multi-axis nut locking equipment, screwdrivers, ratchet wrenches, diagonal wrenches, rotors, tapping machines, pipe miter cutters and other equipment. The operator should be careful and take preventive measures against undesirable reaction torque.
Pneumatic tools pay attention to two “must”
To do:
1. When placing the diamond dressing tool head on the holder, be careful not to hit the surface of the grinding wheel.
2. It is not possible to align the single-point diamond dressing tool head vertically at the center of the grinding wheel, generally it needs to be tilted 10-15°.
3. It is not possible to “quench” (referring to sudden coldness) to hot dressing tools. In dry dressing, the interval between two dressings must be maintained, which is sufficient to cool the heating dressing tool.
4. It cannot be assumed that the surface of the grinding wheel is perfectly flat. At the beginning of dressing, find out the point position of the grinding wheel and perform dressing.
5. If possible, the amount of each grinding wheel repair should not exceed 0.001 inches on the radius of the grinding wheel. Excessive repairing amount can cause premature wear and frequent breakage of the diamond dressing tool head.
6. But it is also not possible to remove too small a margin each time. The grinding wheel used on the old or poorly rigid machine tool may not be trimmed.
7. Be careful not to stay in one position for too long during the trimming. This will polish the surface of the grinding wheel, generate high temperatures and damage the diamond dressing tool. Turn the dressing tool at least once a day.
8. Can not continue to use worn or damaged dressing tools. It should be adjusted or replaced in time.
9. It is not possible to select over-removal amount and too fast infeed speed during rough trimming, and then select small trimming amount and slow infeed speed during finishing. This will quickly damage the diamond dressing tool. if possible,
It is recommended to choose the same infeed speed for rough trimming and finishing trimming.
 
To know:
1. Before using a new dresser, it should be withdrawn from the last dressing feed. Many brittle diamond dressing tools are easily damaged when they first come into contact with the grinding wheel.
2. Install the diamond dressing tool head at an inclined angle of 10-15°, so that it points to the direction of rotation of the grinding wheel.
3. Install the dresser or clamp the dressing tool firmly, and don’t hang the tool head too long.
4. When possible, try to use coolant. During the entire dressing time, use coolant to pour the contact between the dressing tool and the grinding wheel.
5. At the beginning of dressing, start from the point of the grinding wheel, usually the middle of the grinding wheel.
6. Pay attention to minor repairs. The maximum depth of trimming, for rough trimming: 0.001-0.002 inches. For finishing division: 0.0005 to 0.001 inches.
7. Select the appropriate lateral movement speed according to the relevant manual. The slower the lateral movement speed (within the allowable range), the lower the surface roughness of the grinding wheel obtained.
8. The grinding wheel must be trimmed within the specified time interval to prevent the grinding wheel from becoming dull and increase the grinding force.
9. Within the specified time interval, rotate the dressing tool in the tool holder 1/8 turn to ensure that the dressing tool is always sharp.
10. When the diamond dresser or tool head becomes blunt or obviously flattened, it should be adjusted and replaced in time.
11. According to the diameter of the grinding wheel, select the diamond CARAT amount (pure diamond content) reasonably. The larger the diameter of the grinding wheel, the greater the diamond CARAT value selected.
 
Advantage
⒈ The air is easy to obtain, and the working pressure is low. The used air can be discharged on the spot, without the need to recycle the pipe. The system has strong adaptability to the environment, can work reliably in a wide temperature range, humid and dusty environments, a slight leakage will not pollute the environment, no fire and explosion hazard, and safe to use. Simple structure, convenient maintenance, low cost. Pneumatic components have a long service life ⒎The execution output of pneumatic components is smaller than hydraulic pressure, faster movement, strong adaptability, and can work in flammable, explosive, dusty, humid, and impact harsh environments, without polluting the environment, and long working life. Simple structure, easy maintenance, low price
 
Maintenance
Confucius said: “A worker must first sharpen his tools if he wants to do his job well.” To complete each processing or assembly task, you must first be equipped with appropriate and excellent tools. Hardware tools can’t be used without maintenance. That will reduce the service life of hardware tools. Let’s talk about the use and maintenance of pneumatic screwdrivers in pneumatic tools. Pneumatic tools are mainly used in tightening and assembly. Automobile manufacturing, electronics, home appliances, auto parts production, equipment maintenance, and aerospace are all major industries for their applications. Precision, reliability, and durability are the functional measurement standards of pneumatic tools. The quality of rotary pneumatic tools depends on six aspects: ⒈the performance of the built-in pneumatic motor (rotation power); ⒉the metal materials and processing methods used in the transmission mechanism parts; ⒊the processing accuracy of the parts and the assembly accuracy of the tools; ⒋tools Innovation, optimization and improvement of design and production; ⒌quality control; ⒍correct and reasonable use.
 
Maintenance

The correct substitute air supply system: the inlet pressure at the tool inlet (not the outlet pressure of the air compressor) is generally 90PSIG (6.2Kg/cm^2), too high or too low will damage the performance and life of the tool . The air intake must contain sufficient lubricating oil so that the pneumatic motor in the tool can be fully lubricated (a piece of white paper can be placed on the exhaust of the tool to check whether there is oil stains. Normally, there is oil stains). The intake air must be completely free of moisture. It is not appropriate if the compressed air is not supplied with an air dryer. 2. Do not arbitrarily remove the parts of the tool and then operate it, except that it will affect the safety of the operator and cause the tool to be damaged. .If the tool is slightly faulty or cannot reach the original function after use, it can no longer be used, and it must be checked immediately. 4. Regularly (approximately once a week) check and maintain the tools, add grease (Grease) to the rotating parts such as bearings, and add oil (Oil) to the air motor parts. 5. When using various tools, be sure to follow various safety regulations and instructions for operation. 6. Use appropriate tools for work. Tools that are too large can easily cause work injuries, and tools that are too small can easily cause damage to the tools.

 
prospect
1. In terms of operating capability, pneumatic tools can be easily operated through the operation of the air supply valve handle and adjustment of the regulating valve. More levels of choice can be provided in the speed range. Under the same output power, it is comparable to electric tools. Compared with small and light weight, pneumatic tools are more suitable for long-time work without heat generation. Even if the compressed air engine is overloaded, the starting tool will only stop rotating. Once the overload is removed, normal operation will resume. 2. In terms of economic performance, the initial investment of power tools is relatively small, but the long-term use of energy consumption is relatively high, and the cost of tool maintenance and replacement is also relatively high. The initial investment of pneumatic tools requires the establishment of air pressure pipeline equipment, but the long-term use of energy consumption and tool maintenance costs lower. 3. In terms of environmental application capabilities, pneumatic tools have stronger water resistance. Although water immersion is harmful to the tool, it will not generate electric sparks and cause harm like hardware electric tools. And because pneumatic tools can use internal combustion engine air pumps, they can adapt to various bad or harsh environments.
form
The “2013-2017 China Pneumatic Tool Industry Market Analysis and Development Trend Consultation Report” pointed out: Although the research and application of my country’s pneumatic manufacturing industry and pneumatic technology started relatively late, there has been greater development in the past ten years. Tools have the characteristics of high quality, long life, high speed, high output force and high precision. More and more businesses are optimistic about the pneumatic tool market. With the continuous advancement of technology, the development of pneumatic tools will be more and more. width! The manual tools in our country use manpower to work in daily applications, mainly including wrenches, screwdrivers, pliers, etc. Under normal circumstances, they do not require a lot of power. Manual tools are usually used, which are convenient for operation and do not consume energy. . However, in the case of high-power operations, pneumatic tools have the incomparable advantages of manual tools. Their high quality, long life, high speed, high output force and high precision are quickly popularized and applied to the assembly industry and machinery industry. , Transportation industry, scooters, electric bicycles, motorcycle assembly, auto repair shops and some assembly line operations enterprises or manufacturers, play a significant role. In the future, pneumatic tools will develop in the direction of miniaturization, precision and intelligence, high-speed, aseptic and energy-saving. There are three main advantages: First, under the same output power, compared with electric tools, they are small and lightweight. Tools are more suitable for long-term work without heating. Even if the engine is overloaded, it can resume normal operation after the phenomenon is removed. Secondly, pneumatic tools are more resistant to water. Since pneumatic tools can use internal combustion engine air pumps, they can adapt to various defects. Or harsh environment; the final initial investment of pneumatic tools requires the establishment of air pressure pipeline equipment, but the long-term use of energy consumption and tool maintenance costs lower.