Grinding and honing machining method for blind hole or stepped hole with ultra-large length-diameter ratio

During the processing of the blind holes or step holes with large length-to-diameter ratio, internal circle grinding is first performed to form a tool retracting groove, and then the web is formed through honing tools, which solves the problems of straightness, roundness and perpendicularity of the hole bottom during the processing process, and achieves high-quality processing effects.

CN119748310APending Publication Date: 2025-04-04CHANGZHOU KAIRUILAI PRECISION TOOLS CO LTD
5 Cites 1 Cited by

Patent Information

Application Number
CN202411986335.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

It is difficult to ensure straightness, roundness and perpendicularity of the hole bottom during the processing of ultra-large length-to-diameter blind holes or step holes, and the existing technology lacks effective processing methods.

Method used

The bottom of the hole to be processed is grinded with the grinding head of the grinder, grinding out the tool retracting groove, and honing the hole wall through the honing tool to form a mesh to ensure that the hole wall is connected to the side groove surface of the tool retracting groove.

Benefits of technology

The processed blind holes or step holes have high straightness and high roundness, and the surface forms a mesh, while ensuring the perpendicularity of the bottom of the hole.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to the technical field of honing, in particular to a honing machining method for a blind hole or a stepped hole with an ultra-large length-diameter ratio, which comprises the following steps of: 1, performing internal grinding on the hole bottom of a hole to be machined through a grinding head of a grinding machine, grinding a tool withdrawal groove on the hole wall of the hole bottom, the side groove surfaces are parallel to the axis of the to-be-machined hole, and the inner diameter of an inner circle formed by the side groove surfaces of the tool withdrawal groove is the same as the target inner diameter of the to-be-machined hole; step 2, performing internal grinding on the to-be-processed hole above the tool withdrawal groove through a grinding head, and processing the straightness of the to-be-processed hole above the tool withdrawal groove; and thirdly, the hole wall of the hole to be machined is honed through a honing tool of the honing equipment, reticulate patterns are machined on the hole wall of the hole to be machined, the inner diameter of the part, above the tool withdrawal groove, of the hole to be machined is honed to be the same as the inner diameter of the tool withdrawal groove, and the honed hole wall is connected with the side groove face of the tool withdrawal groove. The roundness is high, and the perpendicularity is good.
Need to check novelty before this filing date? Find Prior Art