How To Manually Reset A Heavy-duty Ordinary Lathe And Test It After Reset

Manual reset of heavy-duty ordinary lathes ‌ must follow safe and standardized operating procedures to ensure the safety of equipment and personnel. The following are the specific steps:

1. removes the emergency stop state ‌

First, check whether the emergency stop button on the machine tool operation panel has been pressed. If triggered, rotate the button clockwise to make it pop out and release the emergency stop lock state.

2. confirm the safety conditions ‌

Check whether the protective door is closed properly, whether the oil level of the lubrication system is normal, and whether the air pressure is stable (generally required to be ≥0.5MPa). Ensure that no personnel are working within the movement range of the machine tool.

3. performs the operation of returning to the reference point ‌

In manual mode (JOG), slowly move each axis (X, Z, etc.) towards the mechanical origin direction in sequence until the corresponding limit switch is triggered. The system will automatically recognize and set it as the coordinate zero point. This process ensures that the machine tool "knows" its own position and is a key step in resetting.

4. run an empty test ‌

Select the low-speed mode, run a simple program to conduct an idle tool run test, observe whether the movement of each axis is smooth, and whether there are any abnormal sounds or alarms. Only after confirming that the system has returned to normal can the processing be started.

After the tool changing device of the ‌ heavy-duty ordinary lathe is reset to ‌, the following steps need to be taken for functional testing to ensure its accurate positioning, smooth operation and no interference.

1. manual jog test ‌

In manual mode (JOG) or handwheel mode, select each tool position one by one and observe whether the tool turret can rotate accurately into place. Each time a tool is changed, check whether it is aligned with the center of the spindle and whether there is any offset or jamming.

2. no-load tool change cycle test ‌

Start the automatic operation mode, write a simple program containing only T code (such as T0101→T0202→T0303), and execute the multi-tool rotation loop. Observe whether the tool changing process is smooth, whether the pneumatic/hydraulic clamping device is properly locked, and whether there are any abnormal sounds or vibrations.

3. repeat positioning accuracy detection ‌

Install a dial indicator on the tool rest. Gently touch the spindle positioning reference surface with the indicator head. Switch to the same tool position five times in sequence and record the reading deviation each time. The repeat positioning error should be ≤0.008mm‌. If it exceeds this, the tool turret positioning mechanism needs to be readjust or the clearance of the worm gear pair should be checked.

4. load trial switching verification ‌

Install the actual cutting tool and perform short-time cutting on the specimen (such as lightly turning the outer circle), and check whether the machined surface is continuous and free of vibration marks. If intermittent cutting or dimensional fluctuations occur, it indicates that the tool position has not been fully reset after tool change. The tool needs to be re-aligned or the compensation value adjusted.