The test bench uses this pilot work to lubricate the gearbox through two identical oil baths.

As shown in the figure, the connection is arranged back to back. 1。 The device adopts a set of 045M 15 steel.

(without any heat treatment), in which 137 Hv30 is used to measure hardness. The gears (teeth 49 and 65) have

The modulus is 3mm, the pressure angle 1 20 1, and the surface roughness (ra) is 2 to 3 mm. A simple one

Mechanism for allowing relative rotation and locking of a pair of flanges

The position is the gear used to apply torque.

Response types of broadband relatively flat area of acoustic emission sensor for experiment

Between 100 kHz and 1 MHz. A sensor is placed on the 49-tooth pinion. While the second acoustic emission sensor

Located in the bearing sleeve. The cable is connected to the gear sensor which is put together with the preamplifier.

The feed-in shaft and slip ring are connected to a (IDM'PH is-12). This arrangement allows acoustic emission sensors.

Put the gear as close as possible. The sensor is fixed in one place with super glue. should

The output signal of acoustic emission sensor is pre-amplified to 20 dB. The signal output by the preamplifier

Direct connection (i.e. manufacturer, straight-through/coaxial cable) to commercial data acquisition card.

The accelerometer is installed on the vibration data recording bearing of the casing, as shown in the figure. 1。 accelerometer

A resonant sensor with frequency response is used in the vibration measurement experiment.

10 to 8000 Hz. The accelerometer is installed on the base where the bearing is connected with the shell.

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Figure. 1。 Go back to the back end and arrange with the American Express sensor and accelerometer gearbox.

210 C.K. Tan et al./Mechanical System and Signal Processing 2 1(2007)208-233

The pinion shaft accelerometer is connected to the charge amplifier, the preamplifier and the slave signal output.

It is sent to a commercial data acquisition card.

Gear box is in normal operation, and anti-wear lubricant is usually used to prevent or slow down wear.

Gear teeth. In order to start surface pitting, there is no wear resistance and lubricating oil in a short time.

This characteristic has been used to accelerate the fatigue test of gears. SAE's 20 watts, 50. In addition, in order to speed up.

In the process of pitting corrosion, the width of the pinion surface is occupied by half of the wheel.