Improving the Efficiency of Machine Grinding of Double Curvature Surfaces with a Profiled Flap Wheel

Abstract:

To obtain the desired shape of long panels and sheaths in the aircraft industry, the technology of shot peen forming with subsequent grinding with flap wheels is successfully used. To implement this technology, a special UDF-4 (shot peen forming equipment of the 4th version of modernization) device was designed and manufactured. The last version of this device is equipped with a CNC system and a revolver head with the 4-flap wheels for optimizing the grinding operation. The ability to select the desired flap wheel during the grinding process, depending on the curvature and width of panels or sheaths, has significantly expanded the technological capabilities of this equipment. During grinding with flap wheels of a rectilinear profile, to ensure uniform removal along the cross-section of the part’s curvilinear contour, it is necessary to carry out processing with overlapping previous passages. The need for overlapping passages significantly increases the processing time. At the same time, the calculation of the overlapping width during the changing curvature of the part’s profile is quite a difficult task. This paper presents analytical studies of the use of profiled flap wheels for grinding the part’s surface with a variable radius of transverse curvature, and also proposed the mathematical models for selecting the necessary profiled flap wheels depending on the curvature of the part’s processing surface.

• Periodical: Key Engineering Materials (Volume 910)
• Pages: 232-239
• DOI: https://doi.org/10.4028/p-912xam
• Online since: February 2022
• Authors: Tri Vinh Le*, Vladimir P. Koltsov, Valentina B. Rakitskaya, Evgenia V. Tardybaeva
• Keywords: Grinding with a Flap Wheel, Grinding with Overlapping Passages, Shot Peen Forming, Surface of Double Curvature

References

[1] A.E. Pashkov, Technological links in the process of manufacturing long-length sheet parts, IrSTU, Irkutsk, (2005).

[2] A.E. Pashkov, A.A. Veprev, Complex technology of the aircraft panels forming, IJAMFO, Vol. 4 No. 1 (2012)  39-54.

[3] A.E. Pashkov, A.A. Likhachev, S.V. Vikulova, To the issue of complex automation of the process of forming long-dimensional sheet parts, Publishing House of IrSTU № 4-3 (28) (2006) 21-24.

[4] D.A. Starodubtseva, Revolver head for grinding panels and sheaths with flap wheels after shot peen forming, Modern technologies. System analysis. Modeling №4 (48) (2015) 34-37.

[5] D.A. Starodubtseva, Automation of the process of grinding large-sized surfaces of panels and sheaths after shot peen forming on contact-type device, Aviamashinostroenie i transport Sibiri: sb. articles of the XI All-Russian Scientific and Technical Conference (2018) 96-101.

[6] Y.V. Dimov, Prospects for the use of flap wheels in the manufacture of aircraft parts, Improving the efficiency of technological processes in mechanical engineering (2000) 3-10.

[7] Y.V. Dimov, Processing of parts with an elastic tool, Publishing House of IrSTU, Irkutsk, (2013).

[8] Y.V. Dimov, A.V. Shmatkova, Interaction of the flap wheels with the processed surface, STIN No. 4. (2011) 23-28.

[9] D.B. Podashev, Finishing of parts with elastic polymer-abrasive tools, Publishing House of IRNITU, Irkutsk, (2018).

[10] V.P. Koltsov, Le Tri Vinh, D.A. Starodubtseva, Formation of the surface roughness during grinding with flap wheels after shot peening, International Conference on Modern Trends in Manufacturing Technologies and Equipment vol. 224 (2018).

DOI: 10.1051/matecconf/201822401070

[11] V.P. Koltsov, Le Tri Vinh, D.A. Starodubtseva, Influence of allowance value on formation of surface roughness during grinding with flap wheels after shot peen forming, International Conference on Aviamechanical Engineering and Transport Vol. 188 (2019).

DOI: 10.2991/aviaent-19.2019.59

[12] Le Tri Vinh, V.P. Koltsov, V.B. Rakitskaya, D.A. Starodubtseva, Selection of the width of the cylindrical flap wheel for the revolver head during grinding large-sized contour-forming parts, Publishing House of IrSTU VESNIK 24(2) (20200 275-283.

DOI: 10.21285/1814-3520-2020-2-275-283