Compound Motion Structure with Optimized Shaft End Design

This composite unit adopts a cross structural design that integrates ball screw spiral raceways and straight rolling spline raceways on a single unified shaft. The ball nut and spline sleeve are respectively integrated with high-precision rolling bearings to form an all-in-one composite assembly. By controlling the rotation or static state of the ball nut and spline sleeve, the screw spline shaft can realize three flexible compound motion modes: pure rotation, pure linear straight movement, and spiral composite movement. The highly integrated structural design eliminates the need for separate linear and rotary components, greatly simplifying the mechanical system structure and improving motion coordination accuracy and operational stability.

Lightweight Structure & Ultra-Low Inertia

Equipped with a hollow screw spline shaft structure, the entire motion unit effectively reduces overall dead weight while maintaining structural rigidity. The integrated design of bearings with ball nuts and spline sleeves minimizes the radial overall dimension of the composite assembly. This optimized structural configuration greatly lowers the moment of inertia of rotating parts, delivering excellent dynamic response performance. It supports frequent start-stop and high-speed reciprocating motion of automated equipment, effectively improving production cycle efficiency and reducing motor load and equipment energy consumption.

High-Speed Operation & Low Running Noise

Matched with a large-lead ball screw design and combined with the ultra-low inertia rotating unit structure, the DKG-type composite spline unit achieves stable high-speed motion operation. The precision-ground raceways ensure smooth ball rolling circulation with low friction resistance and no stagnation during movement. Compared with traditional discrete motion structures, it effectively suppresses vibration and running noise during high-speed operation, realizing quiet, stable and efficient long-cycle operation, which perfectly meets the high-speed and low-noise working requirements of intelligent automated production equipment.

Standardized Interface & Easy Installation

Both ends of the ball nut rolling bearing composite unit and spline sleeve rolling bearing composite unit are equipped with standard driving pulley connecting structures. The unified DKG type mounting connection dimensions ensure high structural compatibility and interchangeability. Users can quickly select matching accessories and complete assembly and positioning without complicated modification and debugging processes. The standardized mounting design greatly shortens equipment assembly cycles, reduces installation difficulty, and improves the overall assembly efficiency of automated equipment.

Wide Application Scenarios

Benefiting from its compound motion capability, high-speed low-noise performance, lightweight low-inertia advantages and convenient installation, the DKG-type ball screw rolling spline composite unit is widely used in core motion scenarios of intelligent automated production lines. Typical applications include the Z-axis motion system of horizontal multi-joint SCARA robots, automatic dispensing equipment, precision welding machines, automatic loading and unloading devices, industrial precision testing equipment, and ATC automatic tool change systems of machining centers. It is also applicable to various customized automation machinery that requires synchronous or independent linear and rotary compound motion.

Professional R&D and Technical Strength

Developed independently based on the iterative upgrading demands of intelligent automation equipment, the DKG-type composite motion unit integrates dual functions of ball screw linear transmission and rolling spline torque transmission. The technical team optimizes the hollow shaft structure, raceway layout and bearing integration scheme, and formulates unified DKG mounting connection dimension standards to ensure product interchangeability and assembly accuracy. All products undergo strict dynamic balance testing, high-speed operation testing, dimensional tolerance inspection and load stability verification during the R&D and mass production stages, ensuring consistent high precision and reliable performance of each finished unit.

Advanced Processing Technology & Efficient Delivery

The core hollow screw spline shaft adopts precision grinding technology to ensure high finish and accurate dimensional tolerance of spiral and straight raceways, enabling smooth and low-friction ball circulation. The integrated bearing composite assembly is processed and assembled with mature precision technology to guarantee structural rigidity and running stability. All products are strictly inspected in accordance with DKG type mounting connection dimension standards before delivery. Standard models are in stock for fast batch delivery, and customized mounting dimensions and structural parameters can be provided according to customer equipment requirements, supporting flexible and efficient procurement for global industrial customers.