After using the radial drilling machine for a period of time, some minor faults may occur, which will cause the drilling machine to be unable to operate normally and delay the normal production, and point out some common faults and maintenance solutions during the use of the drilling machine.
Fault 1: The main motor does not rotate when the start button is pressed. Fault analysis shows that the main power switch is not opened. The start button is not well contacted. The contactor is not engaged. The connection in the junction box and electrical panel of the main motor is not well contacted or the connector falls off. Solution Turn on the main power switch and check the start button connector. Check each contact of the contactor in the electrical cabinet. Check the connection of the motor.
Fault 2: There is oil leakage on the main shaft and the outer surface. The oil in the fault analysis box is overfilled and leaks out from the top of the bearing pedestal. Solution When filling oil, do not make the oil amount exceed the mark in the center of the oil pointer.
Fault 3: the spindle box clamp is not tight fault analysis: the 55 ° guide rail surface between the spindle box and the rocker arm has a large fit clearance; The position of the spindle box clamping block is incorrect; There is oil leakage at the joint between the clamping cylinder and the brake frame or there is oil leakage at the relevant part; The interference of the beauty shaped block is not enough to make it stand up and self lock. Solution: Adjust the screw so that the 55 ° guide rail surface matched with it should not be greater than 0.04mm clearance; In the loosening state, loosen the screw to adjust the clamping block to a proper position, and then tighten the screw.
1、 Reasons for loose clamping of spindle box
The 55 ° guide rail combined with the spindle box and the rocker arm is on the surface, with large fitting clearance, the position of the spindle box clamping block is not correct, and there is oil leakage at the joint of the clamping cylinder and the brake frame or oil pipe; Wrapping block, the interference is not enough to make it stand up and self-locking.
Adjust the screw so that the matched 55 ° guide rail surface cannot be more than 0.04m with a gap (generally empty without inspection). Loosen the screw to adjust the clamping block to a suitable position and then tighten the screw.
2、 The column is not clamped tightly
1. The screw on the spring plate is adjusted too much, so that the column is lifted too much, and the diamond block clamping mechanism cannot compress the conical surface combined with the inner column
2. The adjusting screw is not adjusted properly, so that there is a gap between the rod and the housing. 3. The pressure oil in the hydraulic system is too little to push the piston in the oil cylinder, so that the diamond block cannot be in the clamped position
Treatment method: 1. Readjust the screw on the spring plate to ensure the force when the rocker arm is loosened, then adjust the screw on the top of the column to make its clamping force reach 1568N (push force at the end of the rocker arm), and then lock the nut with the screw. 2. If the column is loosened, adjust the four screws in the nut to tighten. 3. Adjust the pressure oil of the hydraulic system to ensure 205-291 × 10% or replace the oil in the oil pool
3、 The rocker arm clamp is not tight
1. Adjust the green light inappropriately. There is a gap between the rocker arm and the outer column when it is clamped. The limit switch is installed close to the number of piston rods. The piston rod has touched the switch before it reaches the point tight position, so that the hydraulic motor stops oil supply. Treatment method: 1. Remove the lock nut or adjust the screw again to ensure that the rocker arm cannot be plugged in 0.04mm when it is clamped, and that the American block can stand up and long self-locking
2. In the clamping state, adjust the position of the limit switch so that the normally closed contact of the limit switch is disconnected and the diamond block is in the clamping position
4、 The main shaft does not return smoothly
Reasons: 1. The spring tension is not enough, and the horizontal axis is deformed. 2. The guide sleeve galling treatment method: 1. The spring tension is not enough, and there is an adjustment under the spindle rod. 2. The horizontal axis is deformed, and the horizontal axis is replaced. The guide sleeve galling is removed and repaired.