home MFG News Summary of CNC machining center tool magazine faults, worth collecting

Summary of CNC machining center tool magazine faults, worth collecting

One: Summary of the failure of the disc tool magazine of the CNC machining center

1. The knife cover is broken, the knife is abnormally reversed when the knife is reversed (the knife is not reversed, the knife is not in place when the knife is reversed, the knife is reversed when the knife is not in place), the knife falls when the knife is changed
Cause Analysis:
①Whether the air pressure is within the standard range
②Whether the solenoid valve of the cylinder is damaged
③Is there any problem in the cylinder itself?
④Whether the tool is too heavy or too long
⑤The structure of the knife holder itself, such as whether the stop screw is loose, the knife block, the knife holder positioning seat
⑥ There is an inverted knife action before the knife holder is positioned, causing the knife holder to rupture
⑦ The cutter head rotates before the knife holder is positioned horizontally, causing the knife holder to break
⑧ The spring clamping force in the tool is not enough, causing the tool to fall when changing the tool

2. The cutter head motor is not running normally (not running, always running, not rotating, not running smoothly)
Cause Analysis:
①Check whether the wiring voltage is normal
②Whether the weight of the tool is overloaded
③Is there any foreign matter inside the tool magazine: The tool magazine hood is found to be full of iron filings, and the iron filings are attached to the proximity switch, causing the tool number to be unrecognized, causing the positioning signal to be sensed abnormally to keep the tool magazine rotating, etc.

3, the knife arm does not work normally
①The arm of the knife is abnormal when the knife is buckled (the knife is not buckled, the buckle is not in place)
Cause analysis: a The tool sleeve is not in place b The reference point protection switch has a signal c The spindle positioning is inaccurate
②The rotation of the knife arm is abnormal when the knife is pulled out and inserted.
Cause analysis: a. Knife cylinder problem, the lower limit signal is not in place b. The origin of the tool arm, tool buckle, and rotation signals are not in place
③The knife arm returns to the origin abnormally
Cause analysis: a. Knife cylinder problem, the upper limit signal is not in place. b Tool arm origin, tool buckle, and rotation signals are not in place

4. The knife fell when changing the knife
Cause Analysis:
①The structure of the tool arm itself has been deformed, which may be caused by the tool being too heavy.
②The position of the loosening and broaching of the knife cylinder is inaccurate, and the knife cannot be loosened; the air pressure of the knife cylinder is not enough, which makes the loosening action abnormal; the compression spring in the knife sleeve is broken

5. Random knife
Cause Analysis:
① Malfunction during tool change, such as emergency stop, reset, sudden power failure, etc.
②The positioning signal is used for counting, and the accumulated error after a period of time causes the counting to be inaccurate

6. ​​There is abnormal noise when changing the knife
Cause Analysis:
①The location of the tool magazine is not well calibrated
②The tool change reference point is not adjusted properly
③The spindle positioning is not adjusted properly
④Whether the arm structure itself is deformed

2: Summary of faults in the tool magazine of the CNC machining center

1. Analysis of the reasons why the tool magazine does not move to the right:
①The spindle is not positioned
②The protection switch of the tool change point has a signal
③The left and right limits of the tool magazine are not in place
④Is there a problem with the structure of the cylinder itself?
⑤The upper and lower limits of the knife cylinder are not in place

2, the tool magazine moves to the right, the spindle does not loosen the tool
Cause Analysis:
①The spindle positioning signal is lost
② Knife cylinder problem
③The right limit of the tool magazine is not in place

3. There is an abnormal noise when changing the knife
Cause Analysis:
①The location of the tool magazine is not well calibrated
②The tool change reference point is not adjusted properly
③The spindle positioning is not adjusted properly
④The claw structure is deformed
⑤The air pressure adjustment is too large when the tool magazine moves to the left or right, and the recoil is not adjusted properly

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