A combined grinding machine is a type of machine that combines multiple grinding processes into a single machine for increased efficiency and productivity. Some potential features of a combined grinding machine include:

Versatility: A combined grinding machine can perform multiple grinding processes, such as surface grinding, cylindrical grinding, and tool grinding, in a single machine.
Increased Efficiency: By combining multiple grinding processes into a single machine, a combined grinding machine can increase efficiency by reducing the need for multiple machines and setups.
Precision: A combined grinding machine can offer precise and consistent results across multiple grinding processes, improving accuracy and reducing errors.
Automation: Many combined grinding machines are equipped with advanced automation features, such as CNC controls and robotics, that can further improve efficiency and accuracy.
Reduced Floor Space: By combining multiple machines into a single unit, a combined grinding machine can help to save floor space in a workshop or manufacturing facility.

It's important to note that the specific features and benefits of a combined grinding machine will depend on the manufacturer and product, and that some applications may still require specialized grinding machines.