How to Level a CNC Lathe

An accurately leveled CNC lathe cannot be overemphasized. Your machine’s performance receives enhancement through this feature which delivers precise cutting results. If you don’t know how to do it, no need to second-guess, as that will damage your assets.

This article will provide a thorough guide on how to level a CNC lathe.

Tools and Equipment you need to Level CNC Lathe

Machinist Level

These are highly sensitive for accuracy and precision. Some have a sensitivity level of 0.0005 inches per foot. You could get the Starett level, Hamar, or Mitutoyo, which are highly recommended.

Feeler Gauges

These gauges check for misalignment in the machine’s components. They also help to detect uneven surfaces and enhance any adjustments made. You can access the metric or imperial measurements, depending on the setup of your lathe machine.

Shim materials

These are flat and thin sheets placed under the feet of the machine to provide stability for the floor. These sheets are made of different materials. Popular ones are brass, stainless steel, or plastic. Each of these has its durability requirement. So use the right one to prevent strain on the machine’s base.

Adjustable leveling feet

CNC lathes come with adjustable feet that allow you to adjust their heights. Some feet come with shock absorbers to withstand external disturbance and improve stability. Generally, for the feet to be leveled, they must be:

Sturdy and heavy-duty to support the machine’s weight
Easy to adjust
Vibration-resistant to minimize external interference during work operation

Wrenches and Spanners

These are also essential for securing the feet and for adjusting the machine’s leveling bolts. Torque wrenches, for example, can apply pressure on leveling bolts. Use the correct size to enhance smooth adjustments.

CNC Lathe Leveling Process

Step 1 – Prepare the Work Area

The first step is to place the CNC lathe on a stable surface. The surface should also be vibration-free for a smooth work operation. Make sure that the bed, feet, and the surrounding area are free from dirt and debris. Now is also the time to check for any prior misalignment or uneven flooring.

Step 2 – Rough Level Your Machine

Before you start proper leveling, it is important to perform a rough level of your machine. This ensures a smooth coolant flow and chip flow. To begin this process, place the lathe at an appropriate height. Placement should be done in such a way that the conveyor and coolant pans fit underneath properly.

However, your machine should be kept as low as possible for improved stability. Furthermore, placing your machine in a low position will prevent the coolant from splashing onto the floor during operation.

Adjust the outer screws to create a considerable gap between the base of your machine and the floor. Once the appropriate height is set, raise the leveling crew of your machine. Make sure the screws do not touch the ground until you’re done with leveling.

Step 3 – Perform Calibration

Understanding precision levels requires accurate calibration to reveal if your measurements are correct. Therefore, it’s a step that shouldn’t be missed.

Place the level on a clean and flat surface. Some machinists use a granite surface plate since the plate is a plane with one axis that reads level. Others rely on machines which are pre-levelled or surfaces which are known to be flat. You can opt for anything that enables you to achieve your goal.

Let the level stay on the surface for about five minutes. Study the bubble position to determine if it deviates from the center point. Rotate the level until you’ve gotten a flat axis.

Place a heavy straight edge against the level, then flip it at 1800 and check again. You need to make adjustments when the bubble appears in a position off-center.

You may need to repeat the process till you get a perfect reading. A perfect reading means your level reads ‘zero. ’ Once it reads ‘zero’ in both directions, then calibration is complete.

Step 4 – Achieve Proper Tolerance Levels

The nature of your work determines if tight tolerances will be prioritized or not. However, the right tolerance levels leads to increased precision alongside better accuracy. If a slight change from a part’s dimension will cause it to be unstable, then you need to pay attention to achieving a tight tolerance.

Do research to know how tight your tolerances need to be (if there’ll be any). Ensure your machine is accurately leveled to fulfill the requirements.

Step 5 – Level in Multiple Directions

Place the machinist’s level on the machine bed. Adjust the feet under the lathe so that the bubble is properly aligned. Once this is done, move the level to the cross slide. The procedure needs to be executed multiple times until you achieve proper accuracy.

Move the level to the tailstock end and check. Adjustments should be made until the bubble is centered in the three positions. After that, check the level from the front and back of the CNC lathe. Adjust the feet as necessary.

Step 6 – Test run for Accuracy

Place a square-shaped piece on the table and check for accuracy. If you’ve achieved accurate leveling, touch down all the support below the magazine and electrical cabinets.

How to Maintain Your CNC Machine

Periodically check the leveling of your machine every 3 – 6 months.
Perform a leveling accuracy assessment each time you move the machine or execute intensive machining duties,
Regularly check for vibration inconsistency and keep the machine in a temperature-controlled environment.

FAQ

Does a CNC need to be level?

A CNC machine needs to be leveled for accurate and precise machining of high-quality parts.

How do I align my CNC bed?

First, clean the bed. Next, Check then adjust the bed level if necessary. Adjust the tailstock and use a dial indicator to measure any deviation. Your bed is leveled if the indicator reads zero.

What are the safety checks before starting a lathe?

A clean workspace and machine in proper condition must be present before starting work. Use personal protective equipment together with a face mask for maintaining your safety.

Conclusion

Understanding how to level a CNC lathe is a simple yet essential part of the machining process. The instructions above promote efficient practices which boost productivity and reduces mistakes.

Tsinfa has a knowledgeable and expert team that is ready to assist with your project. Contact us now for more inquiries.