1. The influence of dynamic balancing performance on grinding accuracy
The dynamic balancing performance of the centerless grinder pallet is directly related to the grinding accuracy. When the dynamic balance of the pallet is not good, centrifugal force will be generated during high-speed rotation, causing radial runout of the pallet and workpiece. This kind of runout causes uneven contact between the workpiece and the grinding wheel during grinding, causing grinding in some areas. The amount of cutting is too large, while other areas are not ground enough, which seriously affects the dimensional accuracy and cylindricity of the workpiece.
For example, when grinding high-precision shaft parts, even a small radial runout may cause the diameter tolerance of the shaft to exceed the allowable range, causing the product to be scrapped. Moreover, the vibration caused by dynamic imbalance will also leave vibration marks on the surface of the workpiece, reducing the surface finish and failing to meet the requirements of precision machining.
2. Impact on grinding wheel life and equipment stability
Poor dynamic balancing performance also has a significant impact on grinding wheel life and equipment stability. Because the unbalanced vibration of the pallet is transmitted to the grinding wheel, the grinding wheel bears additional impact force during work, which accelerates the wear and breakage of the grinding wheel. Frequent replacement of grinding wheels not only increases production costs, but also reduces production efficiency due to operations such as redressing after replacement of the grinding wheels. From the perspective of the overall stability of the equipment, continuous vibration will loosen the connections of various components of the centerless grinder, affecting the mechanical accuracy and service life of the equipment.
For example, long-term vibration may cause increased wear of the spindle bearings, reduce the positioning accuracy and rotation accuracy of the equipment, and thus affect the reliability and stability of the entire grinding processing system.
3. Measures to improve dynamic balancing performance - balance detection and correction
In order to improve the dynamic balancing performance of the centerless grinder pallet, precise balance detection and correction must first be carried out. Using professional dynamic balancing testing equipment, such as a dynamic balancing instrument, the imbalance amount and phase of the pallet can be accurately measured. Based on the measurement results, it can be determined by placing the
Correction is made by adding or removing weights. The material, shape and installation position of the counterweight need to be carefully calculated and determined experimentally to ensure the best dynamic balance effect with the smallest counterweight mass.
Type counterweight blocks allow for quick and easy correction; for large pallets, it may be necessary to drill holes and insert counterweight blocks.
4. Measures to improve dynamic balancing performance - daily maintenance and design optimization
In addition to balance detection and correction, routine maintenance and design optimization are also crucial. In terms of daily maintenance, regularly check the wear of the pallet and repair or replace damaged parts in a timely manner to prevent the deterioration of dynamic balance performance due to component wear. At the same time, keep the pallet clean to avoid dust, chips and other impurities from adhering to the balance.
In terms of design optimization, starting from the structure of the pallet, try to adopt a symmetrical design to reduce the inherent imbalance factors caused by structural asymmetry. Materials with uniform density are selected to make the pallets, and the processing accuracy is strictly controlled during the manufacturing process to ensure uniform mass distribution of the pallets, improve the dynamic balancing performance of the pallets from the source, and provide a strong guarantee for the efficient and precise grinding of centerless grinders.
