Structural Optimization for Instrument Micro Screws to Enhance Load-Bearing Capacity
2026,04,02
Structure is the foundation of rigidity and requires systematic design from the overall to the local:
Formwork Section and Thickness: Box-shaped sections are used instead of traditional flat plates, utilizing the characteristic of "large moment of inertia of closed sections" to improve bending stiffness.
The template thickness is calculated based on the tensile force. Typically, the template thickness for large
Instrument Micro Screws is no less than 100mm, and the upper and lower template thicknesses must match to avoid unilateral deformation.
Strengthening Rib Arrangement: Vertical or diagonal reinforcing ribs are added to non-working areas of the template. The rib height is 1.5 to 2 times the template thickness, and the spacing is controlled at 300 to 500mm. Emphasis is placed on reinforcing areas with concentrated stress, such as the punch support area and the edge of the pressure ring.
Modulator Rigidity Upgrade: Heavy-duty molds are selected, and the diameter (e.g., φ50mm or more) and number of guide pillars are increased (from 4 to 6-8 guide pillars). Ball bearing guide pillars and bushings are used instead of sliding guide pillars to reduce gaps and improve guiding accuracy, effectively resisting lateral forces.
Pre-tightening Structure Design: Pre-tightening bolts are used for large Instrument
Micro Screws. During assembly, a pre-tightening force of 1.2 to 1.5 times the working load is applied, ensuring the template is in a compressed state before operation, offsetting bending deformation during tension.
