Semi-closed lead screw modules for 3D printing
The application of semi-closed lead screw modules in 3D printing is primarily reflected in high-precision
transmission and stable motion control. Their technical features are highly compatible with the perform
ance requirements of 3D printing equipment. The following is a detailed analysis:
I. Core Advantages
Micron-level Positioning Accuracy
Utilizing a high-precision ball screw and dual linear guide design, the Z-axis positioning accuracy reache
s 0.01mm, effectively eliminating layer lines and improving the surface quality of printed parts. For exam
ple, the ELEGOO Saturn 3 Ultra printer uses this technology to achieve high-resolution printing at 11520
×5120 resolution.
Structural Stability
The semi-closed design combines dustproofing and heat dissipation, reducing dust intrusion by 92% and
extending maintenance intervals to 2000 hours, making it suitable for long-term continuous printing.
Models such as the Chuangxiang 3D CR-3040 utilize a dual Z-axis lead screw structure, further enhancing
platform stability.
Load Adaptability
Compatible with diverse printing requirements: Light-load applications (such as stereolithography prin
ting) utilize aluminum-based modules to achieve high-speed motion of 1200mm/s, while heavy-load
applications (such as large-scale FDM models) utilize steel-based modules to maintain ±0.005mm accu
racy.
II. Technical Implementation
Transmission System: Closed-loop servo control (e.g., EtherCAT bus) enables multi-axis linkage error
compensation, reducing positioning time by 33% in medical CT slide applications.
Material Innovation: Some modules utilize 3D printing technology to manufacture their main componen
ts, such as the one-piece molded slide structure described in patent CN119289052A, eliminating gaps
in traditional joints.
III. Application Examples
Industrial-Grade Equipment: TPA Jiujun Intelligent's HNR series modules are used in new energy battery
assembly lines. The coordinated design of displacement slots and dust covers meets Class 1000 cleanroo
m requirements. Consumer-grade device: The CR-5 utilizes imported T-type lead screws and bearings,
enabling intelligent features like power-off resume printing and material break detection, improving
model printing success rates.
This technology is driving 3D printing toward higher precision and lower maintenance costs, and holds
significant potential in precision manufacturing fields such as medical and semiconductors.
