A controllable torque impact wrench online calibration method and device
A technology of impact wrench and calibration method, applied in the direction of force/torque/work measuring instrument calibration/test, measuring device, instrument, etc. Improve the quality of torsion work, high flexibility, and easy portability
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Embodiment 1
[0053] See figure 1 , image 3 , Figure 4 The controlled torque impact wrench of the present invention is in line calibration method, and the process and steps of calibrating the controlled torque impact wrench in the job site (in order to ensure the measurement and calibration accuracy, the measured torque is dynamic torque):
[0054] S1, according to the torque and corner relationship between the tight phase, the elastic phase, the ultravalastic phase during the threaded side, and the dynamic torque and corner are measured in real time, and the corresponding relationship curve of dynamic torque and corner is established.
[0055] figure 1 The dynamic torque and the corner relationship curve are shown, wherein the OA segment is a tight phase, and when the nut / bolt rotates, the torque used is small, but the KS value (ks = Δt / Δα) is faster. Growth, complete the tight process in "a" point, at this time, KS is close to the value, the torque at this time is TS;
[0056] The AB seg...
Embodiment 2
[0073] The torque coefficient of the elastic phase and the friction surface roughness, lubrication conditions, surface plating, material hardness, threaded panels, processing accuracy (cylindrical, straightness, teeth, pitch errors, etc.), The assembly cleanliness is related to the same batch of moving parts, bolts / nuts, and washers and use the same torsion process. " figure 2 Disted), the reduction of the length of the absence is beneficial to improve torque control accuracy;
[0074] The controlled torque impact wrench of this embodiment is in line calibration method, in order to increase the torque control accuracy, reduce the length of the decrease in the same method: in the same batch of workpiece, bolt / nut and gasket and use the same torsion process conditions Next, twisted multi-sets of threaded pairs, real-time measurement dynamic torque and corner curve coordinate point data, continuously calculate the K value (Δt / α), and substitute the K value into the mathematical...
Embodiment 3
[0078] See Figure 9 , Figure 10 , Figure 12 This embodiment is a controlled torque impact wrench online calibration device for realizing the aforementioned controlled torque impact wrench online calibration method.
[0079] The controlled torque impact wrench is on the line calibration device, and the apparatus body 10 includes a driving director 11, an output square 13, and an intermediate elastic body 14 that is driven, and outputs a square elastomer 14 in which it is provided on the device body. Torque sensor 18, the angle sensor, and the microelectronic detection and processing unit 20, the microemption and processing unit 20 includes a microcontroller 21, a torque, and a corner signal conditioning circuit, and an OLED display 25; the microcontroller 21 includes data processing. Unit and non-volatile memory; the non-volatile memory stores the controlled torque impact wrench online calibration method algorithm process as described in Example 1 or Embodiment 2;
[0080] After th...
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