How to maintain the tools on a day to day basis? Is it necessary or to carry out any preventive maintenance between regrinds?

Yes, your tools like Sawblades, Router Cutter's should be removed from the machine at the end of the day and dipped in a solution of water and caustic soda (add 20 grams of caustic soda to a litre of water) for 15 - 20 minutes. This will remove dirt and resins deposited on the tool and will increase the life between regrinds.