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Device and method for processing surface of hemispherical-surface workpiece by rotary ultrasonic magnetic grinding

A technology of magnetic grinding and workpiece surface, which is applied to machine tools suitable for grinding the edge of workpieces, surface polishing machine tools, metal processing equipment, etc. It can solve the problems of reduced performance of parts, poor surface quality, and inability to achieve effects, etc., to achieve Strong processing specificity, improved processing efficiency, and wide application range

Inactive Publication Date: 2018-09-28
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface quality of the hemispherical part is poor, which will reduce the overall performance of the part
The surface quality of hemispherical parts can be improved to a certain extent by using ordinary polishing process methods, but it still cannot achieve the desired effect

Method used

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  • Device and method for processing surface of hemispherical-surface workpiece by rotary ultrasonic magnetic grinding
  • Device and method for processing surface of hemispherical-surface workpiece by rotary ultrasonic magnetic grinding
  • Device and method for processing surface of hemispherical-surface workpiece by rotary ultrasonic magnetic grinding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In this embodiment, the hemispherical inner surface of the workpiece is machined using the rotary ultrasonic magnetic grinding method of the present invention. The specific process is as follows:

[0049] a. Clamping: align the inner surface of the workpiece 13 to be processed with the magnetic pole head 14 side, and install it on the workbench 8 through the sleeve 16 and the clamp 10; the magnetic pole head 14 adopts a cylindrical magnetic pole with a hemispherical end face, and the hemispherical The end face faces the side of the workpiece 13, and is installed on the horn 17 through the collet 18;

[0050] b. Selected abrasive: select Al 2 o 3 After mixing with Fe powder according to the mass ratio of 1:2, the magnetic abrasive material 15 formed by pressing, drying, sintering, pulverizing and sieving;

[0051] c. Processing parameters: set the rotational speed of the speed regulating motor 2 to 1000r / min; the horizontal feed speed of the workpiece 13 to 50mm / min, ...

Embodiment 2

[0057] In this embodiment, the hemispherical outer surface of the workpiece is machined using the rotating ultrasonic magnetic grinding method of the present invention, and the specific process is the same as that in Embodiment 1. Use a 3D super depth-of-field microscope to detect the micro-morphological changes before and after the surface processing of the workpiece 13, such as Image 6 , Figure 7 As shown, the surface quality of the processed workpiece 13 meets the requirements.

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Abstract

The invention relates to a device and a method for processing the surface of a hemispherical-surface workpiece by rotary ultrasonic magnetic grinding. The device comprises a rotary drive device, an ultrasonic magnetic grinding device and a workpiece feeding device, wherein the ultrasonic magnetic grinding device consists of an ultrasonic generator, a collector ring, a carbon brush, an amplitude-change pole, a transducer, a collet chuck and a magnetic pole head, wherein the magnetic pole head is a cylindrical magnetic pole with a hemispherical end surface; the workpiece feeding device consistsof a step motor, a feeding lead screw, a workbench, a hand-operated lead screw and a clamp; when the step motor drives the feeding lead screw to rotate, the workbench can drive a workpiece to longitudinally move back and forth along the magnetic pole head; the hand-operated lead screw drives the workpiece to transversely move back and forth; and during processing, a processing gap is formed between the processed surface of the workpiece and the magnetic pole head, and the processing gap is filled with a magnetic abrasive. Through the processing device with the reasonable design and the processscheme, reasonable process parameters are set, so that precision finishing processing of a hemispherical part is realized, and grinding and processing efficiency can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of precision machining of hemispherical parts, in particular to a device and method for machining the surface of a hemispherical workpiece by rotating ultrasonic magnetic force grinding. Background technique [0002] With the rapid development and continuous progress of science and technology, the machinery manufacturing industry has also developed by leaps and bounds, and hemispherical parts can be used more and more widely, especially valve parts, liquefied gas cylinders, etc., there are many spherical parts. Due to the special use of such parts, there are high requirements for spherical surface roughness, dimensional accuracy, and shape and position tolerances. For parts with such special curved surface shapes, the hemispherical part is often the key part of the part, which plays a decisive role in the overall performance of the part. The surface quality of the hemispherical part is poor, which will redu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/04B24B1/00B24B31/10
CPCB24B1/005B24B1/04B24B31/10
Inventor 陈燕曾加恒李刚谭悦胡玉刚高鑫董晓旭
Owner UNIV OF SCI & TECH LIAONING
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