Imported motorized spindle manufacturer: how to choose a motorized spindle? A detailed introduction.

Depending on the application, high-speed motorized spindles can be roughly divided into 8 categories: cutting, milling, machining-center, belt-driven spindle units without built-in motors, and special rotation-test spindles, etc. The types most customers commonly encounter are cutting, milling, machining-center spindles and belt-driven mechanical spindle units without built-in motors.

When selecting a motorized spindle, the application environment must be considered first - different applications require different tool interfaces. You must also determine the power required by your machining conditions and the corresponding speed at that power. This is very important: two 1 kW spindles differ greatly in size between 1,000 rpm and 10,000 rpm duty, and the design difficulty is different as well, so the machining conditions must be accurately defined. Spindle manufacturers remind that the tool interface must also be confirmed: as a rule of thumb, BT50 interfaces are used on spindles below about 8,000 rpm, while BT40 interfaces can be used on spindles up to about 18,000 rpm; if higher speeds are required, choose the corresponding quick-change interfaces such as HSK.

Cutting motorized spindles are generally constant-torque motors: motor speed, output power and machining voltage are proportionally related, with voltage and power rising linearly as spindle speed increases, while current stays basically stable because torque and current are linearly related. That is why this type of spindle is called a constant-torque motor. When choosing a spindle, always select according to your actual requirements!

Imported motorized spindle manufacturer: what advantages does a motorized spindle have?

1. Cooling system. As everyone knows, when a motorized spindle is machining, its speed is very high, so the surface temperature rises sharply during heavy operation. To ensure normal operation and prevent damage from sustained high temperature, the spindle must dissipate heat effectively during machining. This is done by connecting channels on the inner and outer walls of the spindle housing that circulate cooling liquid, keeping the coolant temperature at an extremely low level.

2. Built-in encoder. Generally, to enable automatic operation or automatic tool setting without external assistance for processes such as rigid tapping, a pulse encoder is built into the spindle. The encoder precisely controls the phase angle of the spindle and achieves smooth coordinated feed.

3. Automatic tool-changing components. If the motorized spindle works together with a machining center, an automatic tool changer must be installed on the spindle, such as a disc spring or a drawbar cylinder.

Imported motorized spindle manufacturer: that is all for this article. Thank you for watching, see you next time.