What are the key differences in structural design between high-precision Centerless Grinding Machine and general-purpose Centerless Grinding Machine?

The spindle precision of high-precision Centerless Grinding Machine is higher, and structures such as multi-piece ball-supported short-bearing dynamic oil film bearings are often used. This design can ensure that the spindle has better stability and rigidity when rotating at high speed, thereby meeting the needs of high-precision grinding. Although general-purpose Centerless Grinding Machine also focus on the precision and stability of the spindle, they may adopt relatively simple or low-cost bearing structures to meet general processing needs.

The guide wheel drive system of a high-precision centerless grinder usually adopts variable frequency AC motor stepless speed regulation, which can achieve more precise speed control, thereby adapting to the grinding needs of different workpieces. At the same time, the guide wheel dressing device may adopt a more advanced drive method, such as a reduction motor driving a ball screw, to achieve stepless speed regulation and smooth and reliable dressing. The guide wheel drive system of a general-purpose centerless grinder may adopt a relatively simple speed regulation method, such as mechanical speed regulation or a limited stepless speed regulation range, to meet the needs of general processing speed.

The grinding wheel dressing device of a high-precision centerless grinder usually uses a servo motor to drive a ball screw for dressing, which can achieve more precise dressing control. At the same time, it may be equipped with a feed compensation mechanism for the grinding wheel frame feeding and grinding wheel dressing, such as a manual or hydraulic mechanical tracking compensation mechanism, as well as timing compensation and timing dressing functions to ensure the accuracy and stability of the grinding wheel. The grinding wheel dressing device of a general-purpose centerless grinder may use a relatively simple mechanical or hydraulic method for dressing, and the compensation mechanism may not be as perfect as that of a high-precision centerless grinder.

The bed of a high-precision centerless grinder usually uses high-strength densely baked cast iron and undergoes multiple aging treatments to ensure the stability and rigidity of the machine tool. The guide rail design may use more advanced lubricating and wear-resistant materials, such as flat V-shaped plastic-coated lubricated guide rails, to improve shock resistance, feed sensitivity and grinding stability. The bed and guide rail design of a general-purpose centerless grinder may use relatively simple or low-cost materials and structures to meet general processing needs.

The control system of high-precision Centerless Grinding Machine is usually more advanced, such as the Mitsubishi system, which has a display screen human-machine communication function and can easily adjust parameters such as feed rate, speed and time. At the same time, it may be equipped with more advanced automation functions, such as automatic loading and unloading devices, automatic measurement and compensation systems, etc., to improve production efficiency and processing accuracy. The control system of general-purpose Centerless Grinding Machine may be relatively simple and mainly meet basic processing needs. The automation function may be limited or require additional configuration.