| GAO Hang,GUO Tian-bo,PENG Can,WANG Xuan-ping,LI Wei-qiu,LIN Hai-sheng.Deburring and Passivation Polishing Technology of Tap Tool with Rotary Abrasive Flow[J],52(3):299-307 |
| Deburring and Passivation Polishing Technology of Tap Tool with Rotary Abrasive Flow |
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| DOI：10.16490/j.cnki.issn.1001-3660.2023.03.027 |
| KeyWord:tap tool rotary abrasive flow polishing deburring passivation of tool edge |
| Author | Institution |
| GAO Hang |
School of Mechanical Engineering,Key Laboratory of Precision and Non-traditional Machining Technology under the Ministry of Education, Dalian University of Technology, Liaoning Dalian , China |
| GUO Tian-bo |
School of Mechanical Engineering,Key Laboratory of Precision and Non-traditional Machining Technology under the Ministry of Education, Dalian University of Technology, Liaoning Dalian , China |
| PENG Can |
School of Mechanical Engineering,Key Laboratory of Precision and Non-traditional Machining Technology under the Ministry of Education, Dalian University of Technology, Liaoning Dalian , China |
| WANG Xuan-ping |
School of Mechanical Engineering,Key Laboratory of Precision and Non-traditional Machining Technology under the Ministry of Education, Dalian University of Technology, Liaoning Dalian , China |
| LI Wei-qiu |
Conprofe Technology Group Co., Ltd., Guangzhou , China |
| LIN Hai-sheng |
Conprofe Technology Group Co., Ltd., Guangzhou , China |
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| Abstract: |
| The work aims to efficiently and cost-effectively eliminate the burr and subsurface burn on the blade surface caused by the grinding of metal working tools such as taps, reamers, drills and milling cutters, and to realize the efficient passivation and polishing treatment of the tool. Therefore, based on abrasive flow machining (AFM) technology, the polishing principle and method of tool rotary abrasive flow (R-AFP) was proposed in the paper. The optimized tool trajectory was obtained by simulation method with ADAMS application, and the multi-station rotary abrasive flow high-efficiency polishing machine was developed which can be used to polish 40 tools at the same time. With high-speed steel tap as the research object, a new self-developed GC abrasive medium was selected for passivation and polishing, the orthogonal experimental design method was adopted to explore the influence of processing parameters such as workpiece speed, processing time, abrasive grain size and abrasive grain mass fraction on the radius of the blunt circle of the cutting edge by range analysis and variance analysis. Using the combination of process parameters obtained by orthogonal test, the passivation and polishing test of tap tool was carried out respectively with the self-developed WS and GC abrasive media, and the passivation and polishing characteristics of the two kinds of abrasive media were analyzed. Experimental results showed that the influence degree of each process parameter on the passivation polishing effect of rotary abrasive flow was as follows:rotating speed of tool, passivation polishing time, mass fraction of abrasive grains and abrasive grains' size; the result of variance analysis was consistent with that of range analysis; the optimal combination of technological parameters with the highest edge passivation efficiency was as follows:tool rotating speed 200 r/min, processing time 60 s, abrasive particle mass fraction 50%, abrasive particle size 180# in the range of various technological parameters. GC abrasive medium with high hardness had high material removal rate and strong passivation ability to the edge and low hardness. WS abrasive media provided better burr removal while maintaining cutting edge sharpness. Using the optimized process parameters, the new machined taps were polished for 1.5 min and 1min respectively with the self-developed WS and GC abrasive media. The burrs on the surface of the taps were completely removed and the burn marks on the surface of the taps were significantly reduced by twice passivation polishing. Also, the passivated surface roughness was reduced from Sa 0.73 μm to Sa 0.26 μm, the corner radius of the tap edge after passivation polishing can be controlled within 5 μm, the phenomenon of excessive passivation of cutting edge was avoided, and the average polishing efficiency was about 20 sticks/min. In this paper, a creative method of multi-position combined polishing is proposed, the rotary abrasive flow polishing technology can effectively remove the burrs on the tool surface and improve the machining defects of the cutting edge. The newly developed tool passivation polishing machine has better use effect and higher application value. A new way for high-quality and efficient polishing and passivation for complex structural forming tools is presented by the research results. |
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