A main drive mechanism for a multi-link press

By designing a symmetrical transmission mechanism and lateral stabilizing components, combined with fluid lubrication and a semi-rigid connection, the structural complexity and precision issues of multi-link presses are resolved, achieving stable operation and long service life of the equipment.

CN122275346APending Publication Date: 2026-06-26HEFEI METALFORMING MACHINE TOOL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI METALFORMING MACHINE TOOL
Filing Date
2026-05-21
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The transmission system of existing multi-link presses has a complex structure, poor accuracy retention, is prone to wear, requires frequent maintenance, and the long transmission chain leads to large cumulative errors, affecting the accuracy of slide movement and equipment utilization.

Method used

The system employs a symmetrical transmission mechanism and a lateral stabilizing component. The symmetrical transmission mechanism applies the same driving force to the upper end of the power connecting rod to counteract the inertial force. It also utilizes lubricating oil pipes and return oil boxes to achieve fluid lubrication. Combined with a semi-rigid connection and steel ball buffer, it reduces mechanical shock and wear.

Benefits of technology

It improves the operational stability and service life of multi-link presses, reduces the failure rate, maintains the accuracy of slide movement and the health of the equipment, and extends the maintenance cycle of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of press technology and discloses a main transmission mechanism for a multi-link press. The mechanism includes an upper box beam and four power connecting rods movably mounted at the bottom of the upper box beam. It also includes two sets of symmetrical transmission mechanisms, each hinged to the upper ends of two corresponding power connecting rods. Equal driving forces are applied to the tops of the power connecting rods from two symmetrical directions, preventing uneven wear. Two mounting plates supporting the symmetrical transmission mechanisms are fixedly connected inside the upper box beam. A lateral stabilizing component is installed between the four power connecting rods, utilizing the structure of the upper and lower frames to maintain lateral stability during the movement of the power connecting rods. This technical solution can ensure superior motion performance of the press while simplifying the connecting rod structure and improving the stress environment of the power connecting rods, thereby enhancing the overall accuracy and stability of the press's main transmission mechanism.
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