Ten causes of grinding vibration and solutions

In the grinding process, the surface of the workpiece is a common quality problem, which not only affects the appearance of the workpiece, but also may reduce its service life and performance. For grinding wheel users, how to reduce or eliminate the seismic marks has become an urgent problem to be solved. This paper will analyze the causes of grinding vibration from many aspects, and put forward the corresponding solutions, aiming at helping the grinding wheel user to improve the grinding quality and reduce the production cost.

Cause analysis of grinding vibration

Grinding wheel mismatch

Cause: improper selection of grinding wheel material, particle size, bond type, etc., does not match with the workpiece material.

Solution: Select the right grinding wheel according to the workpiece material to ensure a good match between the grinding wheel and the workpiece.

Grinding wheel hardness is too high

Cause: The hardness of the grinding wheel is too high, resulting in excessive grinding force and vibration during grinding.

Solution: Select a grinding wheel with moderate hardness and adjust it according to the workpiece material and grinding requirements.

Wheel clogging

Cause: The grinding wheel is blocked by debris or impurities in the grinding fluid during grinding.

Solution: Regularly trim and clean the grinding wheel to keep the grinding wheel surface clean and sharp; Check the filtration system to keep the grinding fluid pure even after changing it.

Grinding wheel balance problem

Cause: Improper balance adjustment after installation of the grinding wheel or unbalance of the grinding wheel itself.

Solution: Balance test before installing grinding wheel to ensure balance of grinding wheel; Use the balance meter to adjust the wheel balance.

The grinding wheel is not installed properly

Cause: When the grinding wheel is installed, the flange and the contact surface of the grinding wheel have debris or are not fully fitted.

Solution: Clean the flange and the grinding wheel contact surface before installing the grinding wheel to ensure that the flange is tightly fitted to the grinding wheel.

Grinding wheel spindle fault

Cause: grinding wheel spindle wear, loose or bearing failure.

Solution: Regularly check the wear of the grinding wheel spindle and bearing, and replace the damaged parts in time; ensure that the spindle is firmly installed to reduce vibration.

Equipment vibration

Cause: The equipment foundation is not firm, the transmission system is unstable or the internal parts of the equipment are loose.

Solution: Strengthen the equipment foundation to ensure that the equipment is stable; Check the transmission system to ensure smooth operation; Check the internal parts of the equipment regularly, and tighten or replace loose parts in time.

Resonance caused by machining parameters

Cause: Improper selection of grinding parameters leads to resonance of grinding system.

Solution: According to the workpiece material and grinding requirements, select the appropriate grinding parameters; Perform grinding tests and adjust parameters to eliminate resonances.

Workpiece material problem

Solution: Material inspection of the workpiece before grinding to ensure that the workpiece material meets the requirements; for the workpiece with uneven material, appropriate pretreatment measures should be taken.

Fixture problem

Solution: Design a reasonable fixture structure to ensure that the workpiece is stable in the grinding process; Check fixture wear regularly and replace damaged parts in time.

In a word, the generation of grinding jarring is a complex problem, involving grinding wheel, equipment, workpiece, fixture, processing parameters and many other aspects. In order to reduce or eliminate seismic marks, we need to start from multiple aspects, consider various factors, and take appropriate solutions. Through reasonable selection of grinding wheel, adjusting grinding parameters, strengthening equipment maintenance and other measures, we can effectively improve the grinding quality, reduce production costs, and meet the needs of users.