Numerical control machine tool screw drive mechanism with thermal temperature rise compensation function
By designing a CNC machine tool lead screw transmission mechanism with thermal temperature rise compensation, a servo motor is used to drive the lead screw to counteract the thermal deformation of the spindle. Combined with cooling water cooling, the problem of the thermal deformation of the CNC machine tool spindle affecting machining accuracy is solved, ensuring machining accuracy.
CN224543784UActive Publication Date: 2026-07-24GUANGDONG CANEN PRECISION MASCH CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG CANEN PRECISION MASCH CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-24
AI Technical Summary
Technical Problem
Existing CNC machine tool spindles heat up and deform during long-term operation, affecting machining accuracy.
Method used
Design a CNC machine tool lead screw transmission mechanism with thermal temperature rise compensation function. The lead screw is driven by a servo motor to rotate and move the machine head. The thermal deformation of the spindle and the lead screw cancels each other out, and the cooling water circuit cools down the machine to ensure machining accuracy.
Benefits of technology
It effectively counteracts the thermal deformation of the spindle, maintains the stability of machining accuracy, and prevents the workpiece from being affected by thermal deformation in terms of machining quality.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224543784U_ABST
Abstract
This utility model provides a CNC machine tool lead screw transmission mechanism with thermal temperature rise compensation function, comprising a column, a machine head, a spindle, and a Z-axis drive mechanism. The spindle includes a sleeve and a mandrel. The machine head has a spindle hole, and the sleeve is movably mounted on the spindle hole. A mounting panel is provided on the side wall of the sleeve and is mounted on the bottom of the machine head. The Z-axis drive mechanism includes a motor base connected to the top of the column, a servo motor mounted on the motor base, a lead screw driven by the output shaft of the servo motor, a lead screw nut connected to the lead screw, and a bearing seat fixedly connected to one side of the column. The lead screw nut is disposed through one side of the machine head. One end of the lead screw is connected to the motor base via a first bearing, and the other end of the lead screw is connected to the bearing seat via a second bearing. Because the mandrel deforms downward when heated, and the lead screw deforms upward when heated, the deformations of the two parts cancel each other out, preventing workpiece deformation caused by thermal temperature rise from affecting machining accuracy.
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