Tool for improving the roughness of a cold-worked surface

By using small extrusion tools and universal drive components for rolling extrusion finishing, combined with wear-resistant oil film technology, the limitations of precision and depth in traditional tool cutting and grinding wheel machining have been overcome, enabling efficient machining of high-precision surface roughness and complex structures with Ra0.4 and above.

CN224347274UActive Publication Date: 2026-06-12JIANGLU MACHINERY & ELECTRONICS GROUP
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGLU MACHINERY & ELECTRONICS GROUP
Filing Date
2025-06-27
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Traditional cutting tool processes struggle to achieve surface roughness of Ra0.8 or higher, and traditional grinding wheel machining methods are limited in their ability to perform high-precision machining on complex structures, resulting in limitations on the quality and efficiency of precision parts manufacturing.

⚗Method used

Using a small extrusion tool, including a tool body, a rolling assembly, and a universal drive assembly, a rolling extrusion finishing process is achieved. Combined with wear-resistant oil film technology, this process enables rolling contact between a high-hardness, smooth sphere and the surface of the part, improving the surface roughness to Ra0.4 and above, and adapting to the machining requirements of non-coaxial internal holes.

🎯Benefits of technology

Breaking through the bottleneck of cutting accuracy of traditional cutting tools, achieving stable control of high-precision surface roughness, improving the machining quality and efficiency of complex structural parts, and solving the problems of traditional methods in precision parts machining.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The utility model discloses improve the tool cold working surface roughness auxiliary tool, and specifically related to machining technical field, including small -size extrusion tool, small -size extrusion tool includes with the tool holder or milling machine main shaft connection's tool concrete, the inside of tool concrete is provided with the placing groove, the inside of placing groove is equipped with the rolling pressure subassembly, is used for the metal surface after tool cutting to carry out rolling extrusion finishing treatment, rolling pressure subassembly includes the bearing of embedding in the placing groove. The utility model discloses by setting up by the tool concrete, high -hardness smooth ball, rolling pressure support ring, connecting shaft and bearing constitute small -size extrusion tool, when using, utilize extrusion principle, the metal surface after tool cutting carries out rolling extrusion finishing treatment, can improve the surface roughness to Ra0.4 and above, effectively breaks through the precision bottleneck of traditional tool cutting, and its use flexibility is strong, and the tool concrete handle part can adapt the tool holder of lathe and milling machine main shaft.
Need to check novelty before this filing date? Find Prior Art