Experimental study on vibration-assisted magnetic abrasive finishing for internal blind cavity by bias external rotating magnetic pole

2021 ◽  
Author(s):  
Liaoyuan Wang ◽  
Yuli Sun ◽  
Fayu Chen ◽  
Guiguan Zhang ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Magnetic Pole ◽  
Magnetic Abrasive Finishing ◽  
Abrasive Finishing

Investigation on the Improvement of Surface Quality by the Magnetic Plate-Assisted Magnetic Abrasive Finishing Process

2021 ◽  
Vol 1018 ◽  
pp. 111-116
Author(s):  
Yan Hua Zou ◽  
Hui Jun Xie
Keyword(s):  
Magnetic Field ◽  
Surface Quality ◽  
Field Distribution ◽  
Magnetic Field Distribution ◽  
Magnetic Flux Density ◽  
Magnetic Pole ◽  
Magnetic Abrasive Finishing ◽  
Abrasive Finishing ◽  
Glass Lens ◽  
The Magnetic Field

The traditional magnetic abrasive finishing (MAF) process, the magnetic flux density at the bottom of the magnetic pole is unevenly distributed, resulting in poor uniformity of the finished surface. Therefore, it is proposed to improve the surface quality by attaching a magnetic plate at the bottom of the workpiece to improve the magnetic field distribution. It is confirmed by simulation that the magnetic field distribution at the bottom of the magnetic pole is effectively improved after the magnetic plate is attached. It is proved through experiments that the magnetic plate-assisted MAF process can obtain a smoother surface. The experimental results show that the surface roughness of the glass lens improves from 246 nm Ra to 3 nm Ra through the magnetic plate-assisted MAF process within 45min.

Discussion on Roundness of Non-Ferromagnetic Tube by Interior Magnetic Abrasive Finishing Using a Magnetic Machining Jig

2021 ◽  
Vol 1018 ◽  
pp. 105-110
Author(s):  
Jiang Nan Liu ◽  
Yan Hua Zou
Keyword(s):  
Stainless Steel ◽  
Dynamic Equation ◽  
Steel Tube ◽  
Experimental Results ◽  
Stainless Steel Tube ◽  
Helical Motion ◽  
Magnetic Pole ◽  
Magnetic Abrasive Finishing ◽  
Sus304 Stainless Steel ◽  
Abrasive Finishing

In this study, mainly researching the improvement of roundness of thick SUS304 stainless steel tube by interior magnetic abrasive finishing using a magnetic machining jig. The influence of reciprocating velocity of magnetic pole unit on the improvement of roundness of interior surface was studied by establishing the dynamic equation of magnetic machining jig. Experimental results showed that low reciprocating velocity of magnetic pole unit is conducive to the improvement of interior roundness of the thick SUS304 stainless steel tube. The reason is that the low reciprocating velocity of magnetic pole unit reduces the pitch of the helical motion and can produce greater finishing force of the magnetic machining jig.

Study on a Magnetic Deburring Method by the Application of the Plane Magnetic Abrasive Machining Process

2009 ◽  
Vol 76-78 ◽  
pp. 276-281 ◽  
Author(s):  
Yan Hua Zou ◽  
Takeo Shinmura ◽  
F. Wang
Keyword(s):  
Magnetic Particles ◽  
Constant Pressure ◽  
Machining Process ◽  
Magnetic Pole ◽  
Shape Accuracy ◽  
Magnetic Abrasive Finishing ◽  
Finishing Process ◽  
Abrasive Finishing ◽  
The Difference ◽  
Pole Surface

This research studies the influence　of constant pressure acting on the magnetic particles brush for the precision machining of planar and curved workpieces. In particular, it examined the effects of constant pressure on improving the formal accuracy of the workpiece. This process method, constant pressure is applied to the magnetic pole of a conventional magnetic brush, the constant pressure acted to the surface of the workpiece through the magnetic particle brush formed at the magnetic pole surface. The authors conducted a plane magnetic abrasive finishing experiment using both the conventional magnetic abrasive finishing process and the newly proposed constant-pressure magnetic abrasive finishing process to compare the deburring characteristics between the processes for removing burrs from holes drilled in brass plate workpieces. In this experiment, a brass disk with a drilled hole was used as a workpiece. As a result, the difference in finishing characteristics was clarified. The results showed that the burr can be removed by use of this new plane magnetic abrasive finishing process and it is more useful than the conventional magnetic brush for improving the shape accuracy of the workpiece.

Theoretical Research on Polishing Free-Form Surface with Magnetic Abrasive Finishing

2008 ◽  
Vol 392-394 ◽  
pp. 404-408 ◽  
Author(s):  
Man Dong Zhang ◽  
Ming Lv ◽  
H.L. Chen
Keyword(s):  
Design Theory ◽  
Theoretical Research ◽  
Free Form ◽  
Machining Accuracy ◽  
Magnetic Pole ◽  
Computer Aided Geometric Design ◽  
Magnetic Abrasive Finishing ◽  
Abrasive Finishing ◽  
Free Form Surface ◽  
Free Form Surfaces

In the paper, polishing free-form surfaces of die are studied with magnetic abrasive finishing. The principle of magnetic abrasive finishing free-form surface, the design of magnetic pole, the composition and categories of magnetic abrasive are introduced. Through digitizing of free-form surface by using trimmed NURBS, based on residual roughness, machining accuracy and other parameters, the offset variable of free-form surface, which is the path of magnetic pole, is derived with the computer aided geometric design theory. These will provide theoretic foundation for the realization of finishing free-form surfaces of die automatically.

The Research of NC Magnetic Abrasive Finishing for Mould Parting Surface

2008 ◽  
Vol 389-390 ◽  
pp. 199-204
Author(s):  
Wei Qiang Gao ◽  
L. Meng ◽  
Qiu Sheng Yan ◽  
J.H. Song ◽  
T.X. Qiu
Keyword(s):  
Effective Control ◽  
Magnetic Pole ◽  
Workpiece Surface ◽  
Magnetic Abrasive Finishing ◽  
Finishing Process ◽  
Abrasive Finishing ◽  
Feeding Speed ◽  
Polishing Tool ◽  
The Relationship

In this paper, a new kind of NC magnetic abrasive finishing method with meshy polishing track to grind the parting face of mould was presented, and a new simple polishing tool using permanent magnet was also developed. Using the magnetic polishing tool, 3D NC polishing experiments was conducted on 2D parting surfaces. Experimental results reveal the relationship between several main parameters (rotational speed of magnetic pole, working gap, feeding speed and number of polishing times) and surface roughness. This study is expected to be helpful to improve the efficiency of finishing process, reduce worker's labor intensity, realize the effective control of finishing process and obtain fine quality of workpiece surface.

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