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Sub-Millimeter Accuracy for Robotic Motion

NB  ’s rotary ball spline has a nut that rolls on the ball spline shaft, making it capable of both linear and rotary motion and provides sub-millimeter accuracy every time. Splines feature arch-shaped grooves on both the shaft and inner portion of the cylinder. These grooves approximate the diameter of the ball bearings, allowing them to carry a high load in a linear motion. A ball spline’s forte is the transfer of torque. In addition, it can even be customized so cabling can run the length of the robotic arm by using a hollow shaft ball spline.

Topics:
Motion Control

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    Transcript

    00:00:04 nb's ball spline utilizes ball bearings as its rolling elements and consists of a nut and a spline shaft its movement is similar in principle to that of Ball Bush the primary difference from The Ball Bush is that both the spline shaft and the outer cylinder have the arch-shaped grooves which approximate the diameter of rolling balls

    00:00:33 in effect these arch-shaped grooves of the spline shaft and outer cylinder allow ball elements to come in contact in linear motion displacing the load this compared with a ball Bush's single point contact load capacity of one ball in the NB ball spline is increased about 10-fold compared with the same size Ball Bush the NB ball spline provides approximately 700 times greater travel

    00:00:59 life with the unique structure of the NB ball spline miniaturization of a device becomes possible from conventional multiple axis to a single axis the ball elements contact the arch-shaped groove of the spline shaft and the outer cylinder so that when power is added to the spline shaft in a rotational Direction This movement is

    00:01:34 transmitted to the outer cylinder much like a gear this special feature of the NB ball spline is enhanced to achieve both linear and rotary motion either simultaneously or independently by a single AIS component nb's spr spline consists of both spline and rotary function within a single component the spr is the ideal component for application ations

    00:02:00 requiring multi-motion movement of both linear and rotary please note that applications such as pick and place and automatic tool Changers are some in which the NB ball spline is [Music] [Music] used [Music]

    00:02:36 d