An automated machining flexible clamping fixture with adjustable clamping force

CN224274985UActive Publication Date: 2026-05-26CHENGDU TECH UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHENGDU TECH UNIV
Filing Date
2025-06-05
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing automated machining flexible fixtures lack clamping force adjustment structures, making it difficult to adapt to the different clamping force requirements of different materials, shapes and processing stages. This results in thin-walled workpieces being prone to indentation, deformation or breakage, affecting machining accuracy and quality.

Method used

An automated machining flexible fixture was designed, which includes a clamping mechanism and an adjustment mechanism. The clamping force is adjusted by using a servo motor to drive the lead screw and threaded plate, and a spring telescopic rod and contact plate are used to provide buffering. The automatic adjustment of the clamping force is controlled by a PLC controller.

Benefits of technology

It improves the versatility and flexibility of the fixture, avoids damage to the workpiece surface, ensures processing quality and accuracy, reduces shaking and wear during transmission, and extends service life.

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Abstract

This utility model discloses an automated flexible machining fixture with adjustable clamping force, belonging to the field of machining fixture technology. Key technical features include a machining table with a clamping mechanism on its top. An adjustment mechanism is welded to the top of the clamping mechanism. A PLC controller is installed on the front of the machining table. The clamping mechanism drives a moving block to slide within a groove via an electric cylinder, causing the clamping shells on both sides to move closer or further apart. This adapts to the clamping requirements of workpieces of different sizes, significantly improving the fixture's versatility and flexibility, reducing the time and cost of frequent fixture replacements due to changes in workpiece size. The design of the spring telescopic rod and contact plate provides cushioning when the clamping plate contacts the workpiece, preventing damage such as indentations and scratches on the workpiece surface caused by rigid clamping, thus ensuring workpiece machining quality. The adjustment mechanism uses a servo motor to drive a lead screw to rotate, which in turn moves the right clamping plate via a threaded plate, thereby adjusting the clamping force.
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