A Method of Low Frequency Vibration Coupled Axial Feed Fly Cutting for Machining Two-Stage Structure Arrays

Abstract

The invention discloses a method for fly-cutting and processing a two-stage structure array by coupling low-frequency vibrating with axial feeding, and a processing device based on a numerical-controlmachine tool and a low-frequency vibrating table. The method comprises the following steps: I, performing ultra-precise surface cutting and processing on the surface of a workpiece, and enabling roughness of the workpiece to be within 10 nm; II, clamping the workpiece onto a low-frequency vibrating table, changing a fly cutter into a sharp knife, re-designing height, cutting depth and a Z-direction feeding rate of the workpiece, and processing a groove array of a second-stage structure; III, performing circular-arc knife processing on the surface of the workpiece with the second-stage structure, setting zero point deviation amount, nominal cutting depth and Z-direction feeding amount of the low-frequency vibrating table, and superposing the second-stage structure on the first-stage structure to form the two-stage structure array. Single groove structure in each row of the two-stage structures is generated by cutting during every-circle rotation of a tool, and shape precision and surface quality of the groove structure are very high; and each groove structure is accomplished once in single-time axial feeding, so that processing efficiency is high.

Description

technical field [0001] The invention relates to the technical field of two-stage structure processing, in particular to a low-frequency vibration coupling axial feed fly-cutting method for processing two-stage structure arrays. Background technique [0002] There are many two-level structures in plants in nature. This two-level structure is the result of nesting microstructures in macrostructures. For example, there are many small grooves nested inside a large groove; The laws are superimposed to form a macroscopic structure. Due to their special surface functions, materials with two-level and multi-level structures have aroused great interest in both engineering applications and scientific research. The leaves of many plants in nature have two-level structures, and these two-level structures often make the leaves show special hydrophilicity and hydrophobicity and optical properties. The vertical sliding of the hierarchical structure; the same research shows that there is ...

AI Technical Summary

Problems solved by technology

Although ultrasonic vibration assistance can achieve high-speed and high-efficiency machining of the two-stage structure, because the second-stage microstructure is generated under the vibration of the tool tip, the length of the microstructure is very short, and only the tool tip participates in cutting. portion size

Images