Common Faults and Solutions of Used Pipe Mill Machine

Publish Time: 2024-12-04

Used Pipe Mill Machine may encounter a variety of faults during use. The following is a detailed professional explanation of these common faults and their solutions:

1. Spindle failure

(1) Spindle does not work properly

Failure phenomenon: The spindle cannot start or runs abnormally.

Failure cause:

The main drive speed gear shift is not in place: The speed gear is not properly engaged, resulting in the spindle being unable to obtain the correct transmission ratio.

Cutting overload: Improper cutting parameter setting or workpiece material is too hard, resulting in excessive load on the spindle.

Motor failure: Internal damage to the motor or electrical circuit failure, resulting in failure to provide sufficient driving force.

Spindle mechanical part damage: Mechanical parts such as spindle bearings and seals are worn or damaged.

Solution:

Check and adjust the main drive gearbox to ensure that the speed gear is properly engaged.

Adjust cutting parameters according to cutting specifications to avoid overload.

Check the motor and its electrical circuit, and repair or replace damaged parts.

Check the spindle mechanical part and replace worn or damaged parts.

(2) Spindle accuracy exceeds the standard

Fault phenomenon: The accuracy of the machined workpiece does not meet the requirements.

Fault cause:

Bearing damage or improper adjustment: Bearing wear or improper adjustment causes the spindle radial runout to increase.

Spindle inner hole wear: Long-term wear of the spindle inner hole causes the accuracy to decrease.

Spindle temperature rise is too high: The spindle temperature rise is too high due to poor lubrication or excessive load, resulting in thermal deformation.

Loose locking nut: Loose locking nut causes the spindle axial movement.

Solution:

Replace the damaged bearing and adjust it to the appropriate position.

Repair or replace the worn spindle inner hole.

Check the spindle lubrication system to ensure good lubrication; adjust the cutting parameters to avoid excessive load.

Tighten the loose nut to ensure the axial stability of the spindle.

(3) Spindle temperature rise exceeds the standard

Fault phenomenon: The spindle temperature rises abnormally.

Fault cause:

Bearing damage: Bearing wear or damage causes increased friction and heat generation.

Locking nut is too tight: Locking nut is too tight, which causes bearing to bear too much preload and generate heat.

Solution:

Replace damaged bearing.

Adjust the tightness of locking nut to avoid overtightening.

2. Electrical failure

(1) No power when starting

Failure phenomenon: The device cannot start and the display screen is blank.

Failure cause:

Incorrect input power: The power supply voltage does not meet the equipment requirements.

Incorrect wiring: The electrical circuit wiring is wrong or the terminal is loose.

Solution:

Input the correct power according to the equipment requirements.

Check the electrical circuit to ensure the wiring is correct; tighten the terminal to ensure good contact.

3. Feed system failure

(1) Feed box is too noisy

Failure phenomenon: The feed box makes abnormal noise when running.

Failure cause:

Transmission gear is misaligned or loose: The transmission gear is not properly engaged or loose, causing noise.

Solution:

Check whether each transmission gear is loose or misaligned, and adjust or replace it.

(2) No feed motion in the feed box

Fault phenomenon: The feed box cannot provide feed motion.

Fault cause:

The feed motor is not connected or damaged: The motor is not powered on or is internally damaged.

The feed electromagnetic clutch cannot be engaged: The electromagnetic clutch failure causes the inability to transmit power.

Solution:

Check the electrical circuit to ensure that the feed motor is powered on and working properly.

Check and repair the feed electromagnetic clutch failure.

4. Other common faults

(1) Moving parts creep

Fault phenomenon: The moving parts creep when moving at low speed.

Fault cause:

Insufficient guide rail lubrication: Poor guide rail lubrication causes increased friction.

Solution:

Check whether the pipeline is blocked or the distributor is damaged; refuel each lubrication point regularly according to the machine tool manual; ensure that the guide rail is well lubricated.

(2) No coolant

Fault phenomenon: The coolant system cannot provide coolant.

Cause of failure:

Coolant is too dirty or the filter is blocked: the coolant is deteriorating or the filter is blocked, resulting in the inability to circulate.

Pipeline leaks or hoses are bent: the pipe or hose is damaged and causes the coolant to leak.

Nozzle blockage: the nozzle is blocked by impurities and the coolant cannot be sprayed.

Solution:

Clean or replace the coolant; clean or replace the filter.

Replace the damaged pipe or hose.

Clean the nozzle to ensure that the coolant can be sprayed normally.

Common failures of Used Pipe Mill Machine involve spindles, electrical, feed systems and other aspects. When solving these failures, it is necessary to carefully analyze the cause of the failure and take appropriate solutions to ensure that the equipment can resume normal operation. At the same time, regular maintenance and care of the equipment is also an important measure to prevent failures.