Rotary bending fatigue specimen V-shaped notch abrasive flow grinding device and process

Abstract

The invention discloses a rotating bending fatigue sample V-shaped notch abrasive flow grinding device and process, the rotating bending fatigue sample V-shaped notch abrasive flow grinding device comprises a cylindrical clamp, the cylindrical clamp comprises a first clamp body and a second clamp body which are connected through a hinge shaft, and a locking device used for tightly attaching the first clamp body and the second clamp body is installed on the cylindrical clamp. A cavity matched with a part to be machined in shape is formed in the cylindrical clamp, a first channel communicated with the cavity is formed in the bottom of one side of the first clamp body in the direction perpendicular to the axis of the first clamp body, and a second channel communicated with the cavity is formed in the top of one side of the second clamp body in the direction perpendicular to the axis of the second clamp body. The abrasive material flows through the to-be-machined part in the axial direction, machining textures in the axial direction can be left on the surface of the to-be-machined part, the machining texture direction on the surface of the to-be-machined part is perpendicular to the fatigue stress sensitive direction of the part, and the service life of the part can be greatly prolonged.

Description

technical field [0001] The invention relates to the field of grinding equipment, in particular to a V-notch abrasive flow grinding device and process for rotating bending fatigue samples. Background technique [0002] Grinding is the last processing procedure of important parts, and its motion direction and motion mechanism play a decisive role in processing texture. If the surface texture during grinding is not perpendicular to the fatigue stress sensitive direction of the part, the previous machining work to make the machining texture parallel to the fatigue stress direction will be in vain. However, most of the existing grinding processes for rotary parts are circumferential grinding, and the surface processing texture direction is parallel to the fatigue stress sensitive direction of the parts. 18CrNiMo7-6 steel, as a high-strength, difficult-to-machine alloy steel, has been used in many fields. In order to better study the properties of 18CrNiMo7-6 steel, it is necess...

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Problems solved by technology

In order to better study the properties of 18CrNiMo7-6 steel, it is necessary to carry out various experiments on it. Therefore, a rotating bending fatigue specimen with a V-shaped notch is required, and its machined surface is a complex surface. It is difficult for ordinary grinding processes to meet the requirements of this paper. Requirements, the present invention proposes to use the abrasive flow machining process with good adaptability to grind the V-shaped notch

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