Customized linear motion with high-load capacity up to 1570N
Along the axial length of the system is a precision recirculating ball rail capable of extremely high-load capacity and high rigidity. The extruded aluminum frame supports all the components for the system. In this particular design, the drive mechanism is a Haydon stepper motor and a precision rolled 303 stainless steel Kerk lead screw. Attached to both the lead screw and the precision ball rail is a machined aluminum load carriage with an integral Delrin drive nut. The rail system can be easily tailored to many other applications.
The design of the rail mechanics allows a maximum load of 1570N in the ‘Z’ direction while still maintaining accuracy specs. Maximum roll, pitch, and yaw specs are 22.65 Nm,13.9 Nm, and13.9 Nm respectively. The practical load capability will depend on the motor / leadscrew combination. The system was designed around a 9.5mm diameter lead screw with standard available leads of 0.64mm to 38.10mm. When combined with a 1.8 degree hybrid stepping motor, very fine positioning resolutions can be configured. A brush or brushless DC motor also can be used for applications requiring higher speed and higher linear force output. Positioning resolution in the case of a closed loop DC brush or brushless motor is determined by the capabilities of the encoder system. An encoder system can be added to either the motor or the screw.
Visit Haydon Kerk Motion Solutions at www.HaydonKerk.com