Structure of free-cutting steel bar

By setting cutting grooves and a center hole on the surface of the steel bar, and combining them with a lubricating coating, the problem of chip adhesion is solved, thereby reducing cutting resistance and improving machining efficiency and safety.

CN224498166UActive Publication Date: 2026-07-14HUIZHOU JUNHAOSHENG IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUIZHOU JUNHAOSHENG IND CO LTD
Filing Date
2025-10-16
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In the existing steel bar structure, chips tend to stick to the cutting tool during the cutting process, which increases cutting resistance, accelerates tool wear, and affects processing efficiency and quality.

Method used

Multiple through-cutting grooves are set along the length of the steel bar surface. They are designed as V-shaped or strip-shaped grooves with a depth of 1/10-1/8 of the bar diameter. There are 3-6 grooves in total, which are evenly distributed. Combined with a central hole and a lubricating coating, the contact area and friction between the chips and the cutting tool are reduced.

Benefits of technology

By designing cutting grooves, chips are separated, cutting resistance is reduced, machining efficiency and quality are improved, chips are ensured to be discharged smoothly, entanglement is avoided, and machining safety is enhanced.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224498166U_ABST
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Abstract

The utility model belongs to metal material technical field especially relates to an easy cutting steel bar structure, including the bar body, the bar body is strip -shaped structure, the outer surface of bar body is evenly provided with a plurality of cutting grooves along its length direction, the cutting groove is the strip -shaped recess that penetrates the both ends of bar body, and the depth of cutting groove is 1 / 10-1 / 8 of bar body diameter. The easy cutting steel bar structure provided by the application can divide the cutting chip in the cutting process by setting the cutting groove on the surface of the bar body, reduce the contact area of the cutting chip and the cutter, thereby reduce the cutting resistance, improve the processing efficiency and quality, the design of the cutting groove can guide the discharge direction of the cutting chip, avoid the cutting chip winding on the cutter or workpiece, improve the processing safety.
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