The following are the core differences and technical characteristics comparison of different types of double-sided grinding and polishing machines:

一、Differentiate by structural design

1、Horizontal double-sided grinder

Traditional layout, large footprint (about 10 square meters), severe dust pollution requiring supporting dust removal system

Suitable for rough grinding of large workpieces (such as metal valve plates), with a grinding disc diameter of over 1000mm

2、Vertical double-sided grinder

Adopting a vertical structure, occupying less than 1 square meter, integrated dust recovery device, suitable for assembly line collaboration

Higher precision (flatness ± 1 μ m), mostly used for precision polishing of semiconductor silicon wafers and optical glasses

二、Differentiate by driving mode

1、Mechanical planetary gear transmission type

Double sided synchronous machining is achieved by rotating the upper and lower grinding discs in reverse (speed ratio 1:1.2-1.5)

Typical application: Batch processing of metal parts such as bearing rings, with an efficiency increase of 30% -50% compared to single-sided machines

2、Magnetic Drive Type

Using a disk to drive the steel needle to rotate, the workpiece remains stationary to avoid deformation, and is specifically designed for polishing non-ferrous metals such as copper and silver

Advantages: Able to handle ultra-thin workpieces (thickness ≤ 0.1mm), with a surface roughness of Ra 0.05 μ m

三、Differentiate by process integration degree

1、Basic grinding type

Only has rough grinding function, requiring a separate polishing process afterwards, with lower cost

2、Grinding polishing composite type

Integrated with multiple workstations, capable of synchronously completing thinning, precision grinding, and mirror polishing, shortening the process chain

Representative model: Semiconductor specialized equipment equipped with diamond dressing wheels and nanofiber polishing discs

四、Selection suggestions

Large metal parts → choose horizontal+mechanical transmission (grinding disc diameter ≥ 700mm)

High precision brittle materials → vertical selection+pneumatic pressure control (such as sapphire substrate processing)

Complex shaped workpieces → Prioritize magnetic drive or eddy current models