What is the standard number of a torque measuring instrument and what is its function?

There is no positive or negative torque for this torque.

Torque is a special moment that causes an object to turn. Engine torque is the torque that the engine outputs from the crankshaft end. Under the condition of fixed power, it is inversely proportional to the engine speed, the faster the speed, the smaller the torque, and vice versa, it reflects the load capacity of the car within a certain range.

The external torque is called torque or external force moment, and the internal torque is called internal force moment or torque.

Torque (torque, also known as torque) is a special moment in physics, equal to the product of force and force arm, the SI unit is Nm nm, in addition, you can also see kgm, lb-ft such a unit of torque, because g = mg, when g = when the gravity of 1kg is, so 1kgm =, and the pound lb-ft is the imperial unit of torque, 1lb=; 1ft=, you can calculate 1lb-ft=. Torque is often referred to as torsion in everyday expression (these are two different concepts in physics). For example:

The torque of the 8th generation Civic is, which means that the engine output torque at 4300 rpm, how can that force make a car more than 1 ton run? In fact, the torque emitted by the engine is amplified (at the cost of reducing the revs at the same time) and it depends on the gearbox, final pass and tires. The torque released by the engine is first amplified by the gearbox for "adjustable" torque, then transmitted to the final pass (tail teeth) for further amplification (and further reduction of the revs), and finally the driving force is released through the tires.

For example, the 1st gear gear ratio of a car (the gear number ratio, the essence is the radius ratio of the gear) is 3, the tail tooth is 4, the tire radius is meters, and the original torque is 200Nm, and finally the torque of the axle becomes 200 3 4 = 2400Nm, and then divided by the tire radius in meters, the part of the tire and the ground friction has 2400Nm, that is, the driving force of 800 kgf, which is enough to drive the car.

The standard number of the torque measuring instrument actually shows the effect of a functional aspect of the instrument, the standard number is often used in a wider range, and the function is relatively comprehensive. The standard number of the instrument purchased in Zhuoyilong company has a wide range, a wide range of applications, and accurate measurement data.

The use of digital torque tester, digital torque tester is mainly used to detect and correct the torque of various electric pneumatic screwdrivers, torque drivers, torque wrenches, various products involving tightening force testing, torsional destructive test of parts, etc., with the characteristics of simple operation, high precision, full function, easy to carry, etc., widely used in various electrical, light industry, machinery, manufacturing, scientific research institutions and other industries. Performance characteristics of digital torque tester:

1. High accuracy, high resolution, fast sampling speed, and full-screen display.

2. High-precision torque sensor is adopted, and the torque direction is displayed.

3. The setting of the upper and lower limits, the red and green indicator lights and the sound and light alarm of the peak sound and banquet device.

4. Three units can be converted to each other and can be selected (n·m, kgf·cm, ibf·in).

5. Real-time, peak, and automatic peak modes can be switched at will.

6. There is no automatic shutdown function for operation, and the time can be set freely.

There are many ways to achieve torque measurement, and the main ones are as follows:

1. Strain gauge test torque method, the disadvantage of this measurement method is that there is friction between the brush and the collector ring, the input energy requirement is larger, and the wear is faster, the life is low, the reliability is poor and the measurement accuracy is low, 2, the capacitive torque sensor, the disadvantage is that the device structure is complex, the output is nonlinear, the parasitic capacitance and the distributed capacitance have a greater influence on the sensitivity and measurement accuracy, and the connection circuit is more complex, and it is quite laborious to make a flexible printed circuit board and install it on the shaft.

3. Laser torque sensor: It uses the laser Doppler effect to achieve non-contact measurement of torque. The disadvantage is that the production cost and use cost of the device spring liquid are very high, it is difficult to promote the annual sales and widely use, and the equipment debugging is difficult to debug when measuring, and the orientation is poor and greatly affected by the ambient temperature.

With the rise of modern industry and production lines, torque testers are increasingly used in production testing and quality assurance, however, instrument damage due to improper operation and lack of awareness of torque testers is more frequent. The damage of the torque tester not only seriously affects the normal progress of production, but also is a loss that cannot be underestimated in terms of quality assurance, product management and cost. Understanding the structure and technical requirements of the torque tester, correctly operating the gage to complete the measurement task, correctly protecting the instrument gage, and prolonging its life is the basic responsibility of an instrument operator, and it is also one of the important criteria to measure the ability level of a technician and instrument operator.

1. Torque tester is a measuring tool used to measure the torque value. For the sake of explanation, all torque testers are collectively referred to as torque testers here. It is able to express the force value of the load on the one end of the shouting and measuring instrument through its own internal mechanism.

Torque tools are widely used in today's machinery manufacturing neighborhoods, and are an indispensable instrument in measuring the force of screws, destroying torsion breaking force and fastening screws.

a.Force-bearing pawl: An interface for connecting an external force measuring device. (all kinds of nozzles, sleeves and all kinds of fixtures and other auxiliary tools).

b, direction conversion button: used to change the force application point when measuring.

c.Lever Fulcrum: Used to support the applied moment.

d.Numerical Indication: Shows the value of the force to which the measurement is exerted.

e.Handle: The place where the force is applied during operation.

f.Locking device: ensures that the set value does not change during operation.

g.Positioning pointer: When the torque at the time of measurement is removed, the maximum torque at the time of measurement is displayed, so that the value does not disappear immediately.