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Üçayaklı Ayna İle Tutulan Parçaların Üretim Sonrası Delik Profillerinin Tahmin Edilmesi

Year 2020, , 542 - 549, 25.06.2020

Fatih Güven

https://doi.org/10.17776/csj.674764
Cited By: 1

Abstract

Üretim planlaması aşamasında delik profilinin tahmin edilebilmesi hassas imalatta doğru kesici takıma karar vermek için önemlidir. Profil tahmini, aynı zamanda üretimde ıskarta oranını da düşürülmesine yardımcı olur. Üreticiler her zaman tüm takımları elinde bulunduramazlar ve an az takımla en iyi üretimi yapmak isterler. Üçayaklı torna aynası, özellikle silindirik parçalar için, farklı boyutlardaki parçaların aynı tezgâhta işlenmesine imkân verir. Fakat üçayaklı ayna sıkıştırma sırasında parçasının şeklinin bozulmasına sebep olur. Bu çalışmada delik profilinin şekil değiştirmesi sayısal olarak incelenmiştir. Tam elastik şekil değiştirme koşullarında farklı malzeme ve cidar kalınlığına sahip parçaların boyutsal değişimi sonlu elemanlar yöntemi ile incelenmiştir. Gerilim altındaki silindiril parça üçgen bir şekil almaktadır. Malzeme ve cidar kalınlığının üçgenleşme açısından önemli değişkenler olduğu görülmüştür. Üçgenleşme sonucunda parçanın istenilen şekil toleranslarında kalıp kalmayacağını tahmin edebilmek için kalın cidarlı basınçlı kaplar teorisine dayanan basit hesaplamalar önerilmiştir. Bu kolay yöntem, seri üretimi yapılan silindirik parçaların ıskarta oranının düşürülmesine imkân vermektedir.

Keywords

Geçme Kesme İşleme Hassas imalat Tolerans

References

  • [1] Li B., Melkote S.N., Fixture clamping force optimisation and its impact on workpiece location accuracy. Int J Adv Manuf Technol. 17 (2001) 104–113.
  • [2] Güven F., Contact Pressure Losses in Shrink Fitted Assembly Due to Triangular Hub Form. In: 5th International Conference on Advances in Mechanical Engineering. İstanbul (2019) 950–955.
  • [3] Feng P.F., Yu D.W., Wu Z.J. and Uhlmann E., Jaw-chuck stiffness and its influence on dynamic clamping force during high-speed turning. Int. J Mach. Tools Manuf. 48 (2008) 1268–1275.
  • [4] Rahman M., Factors affecting the machining accuracy of a chucked workpiece. Precis. Eng. 8 (1986) 34–40.
  • [5] Brinksmeier E., Sölter J. and Grate C., Distortion engineering - identification of causes for dimensional and form deviations of bearing rings. CIRP Ann. – Manuf. Technol. 56 (2007) 109–112.
  • [6] Kessler O., Prinz C., Sackmann T., Nowag L., Surm H., Frerichs F., Lübben Th. and Zoch W., Experimental Study of Distortion Phenomena in Manufacturing Chains. Mat.‐wiss. u. Werkstofftech., 37 (2006) 11-18. DOI: 10.1002/mawe.200500975.
  • [7] Malluck J.A., Melkote S.N., Modeling of Deformation of Ring Shaped Workpieces Due to Chucking and Cutting Forces. J. Manuf. Sci. Eng. Feb 126(1) (2004) 141-147
  • [8] Estrems M., Arizmendi M., Cumbicus W.E. and López A., Measurement of Clamping Forces in a 3 Jaw Chuck through an Instrumented Aluminium Ring. Procedia Eng. 132 (2015) 456–463.
  • [9] Estrems M., Arizmendi M., Zabaleta A.J., and Gil A., Numerical Method to Calculate the Deformation of Thin Rings during Turning Operation and its Influence on the Roundness Tolerance. Procedia Eng. 132 (2015) 872–879.
  • [10] Estrems M., Carrero-Blanco J., Cumbicus W.E., de Francisco O. and Sánchez H.T., Contact mechanics applied to the machining of thin rings. Procedia Manuf. 13 (2017) 655–662.
  • [11] Bajpai S., Optimization of workpiece size for turning accurate cylindrical parts. Int J Mach. Tool Des. Res. 12 (1972) 221–228.
  • [12] Maračeková M., Zvončan M. and Görög A. Effect of clamping pressure on parts inaccuracy in turning. Teh. Vjesn. 19(3) (2012) 509–512.
  • [13] Görög A., Görögová I., Research of the Influence of Clamping Forces on the Roundness Deviations of the Pipes Turned Surface. Res. Pap. Fac. Mater. Sci. Technol. Slovak Univ Technol 26(42) (2018) 47–54.
  • [14] Shawky A., Rosenberger T. and Elbestawi M., In-process monitoring and control of thickness error in machining hollow shafts. Mechatronics 8 (1998) 301–322.
  • [15] Beekhuis B., Stoebener D. and Brinksmeier E., Adapted Non-Circular Soft Turning of Bearing rings – Impact of process machine interactions on compensation potential. Procedia CIRP 1 (2012) 540–545.
  • [16] Stöbener D., Beekhuis B., Application of an in situ measuring system for the compensation of wall thickness variations during turning of thin-walled rings. CIRP Annals 62(1) (2013) 511–514.
  • [17] Jones F.D., Oberg E. and Horton H.L. and Henry H.R., Machinery’s handbook 27th Eds. Industrial Press, (2004).
  • [18] Schmid S.R., Hamrock B.J. and Jacobson B.O., Fundamentals of machine elements. 3rd ed. Boca Raton: CRC Press, 2013.
  • [19] Norm ISO 286-1:2010. Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes — Part 1: Basis of tolerances, deviations and fits. 2010.
  • [20] Güven F., Rende H., Influence of Contact Pressure on Surface Roughness Losses in Shrink Fitted Joints. In: 8th International Advanced Technologies Symposium. (2017) 3115–3119.
  • [21] Rende H., Güven F., Sıkı geçme bağlantılarında malzemeye bağlı yüzey pürüzlülüğü kayıp katsayısının belı̇rlenmesı̇. Mühendis ve Makina 665 (2015) 46–52.
  • [22] Volkmuth J., Lane S., Jung M. and Sjöblom U.,. Uneven residual stresses in bearing rings prior to hardening and their effect on shape changes after hardening. HTM - Haerterei-Technische Mitteilungen. 60 (2005) 317-322.
  • [23] Neslušan M., Mrkvica I., Čep R., Kozak D., and Konderla R., Deformations after heat treatment and their influence on cutting process. Teh Vjesn 18 (2011) 601–608.

Post-op bore profile estimation of workpiece clamped using three-jaw chuck

Year 2020, , 542 - 549, 25.06.2020

Fatih Güven

https://doi.org/10.17776/csj.674764
Cited By: 1

Abstract

Estimating bore profile is important to select an appropriate tool for precision manufacturing in the process planning stage. Also, it helps in reducing the rejection rate of the process. A manufacturer might not be well-equipped and want to make their best with the resource on hand. Three-jaw chuck allows machining a wide range of workpiece, mostly circular parts in a lathe. However, clamping via a three-jaw chuck distorts the workpiece. In this study, the deformation of the bore profile was investigated numerically for circular parts. Finite element analyses were performed to examine dimensional variation for various materials and different wall thicknesses under fully elastic plane stress conditions. The stressed workpiece had a triangular form. Results showed that wall thickness and materials are important parameters on the triangulation of bore diameter. A simple calculation method based on thick-walled vessel theory was proposed to estimate the tolerance grade of the workpiece. This simple method provides the opportunity to reduce the rejection rate in the mass production of circular parts.

Keywords

Fit Cutting Machining Precision Tolerance

References

  • [1] Li B., Melkote S.N., Fixture clamping force optimisation and its impact on workpiece location accuracy. Int J Adv Manuf Technol. 17 (2001) 104–113.
  • [2] Güven F., Contact Pressure Losses in Shrink Fitted Assembly Due to Triangular Hub Form. In: 5th International Conference on Advances in Mechanical Engineering. İstanbul (2019) 950–955.
  • [3] Feng P.F., Yu D.W., Wu Z.J. and Uhlmann E., Jaw-chuck stiffness and its influence on dynamic clamping force during high-speed turning. Int. J Mach. Tools Manuf. 48 (2008) 1268–1275.
  • [4] Rahman M., Factors affecting the machining accuracy of a chucked workpiece. Precis. Eng. 8 (1986) 34–40.
  • [5] Brinksmeier E., Sölter J. and Grate C., Distortion engineering - identification of causes for dimensional and form deviations of bearing rings. CIRP Ann. – Manuf. Technol. 56 (2007) 109–112.
  • [6] Kessler O., Prinz C., Sackmann T., Nowag L., Surm H., Frerichs F., Lübben Th. and Zoch W., Experimental Study of Distortion Phenomena in Manufacturing Chains. Mat.‐wiss. u. Werkstofftech., 37 (2006) 11-18. DOI: 10.1002/mawe.200500975.
  • [7] Malluck J.A., Melkote S.N., Modeling of Deformation of Ring Shaped Workpieces Due to Chucking and Cutting Forces. J. Manuf. Sci. Eng. Feb 126(1) (2004) 141-147
  • [8] Estrems M., Arizmendi M., Cumbicus W.E. and López A., Measurement of Clamping Forces in a 3 Jaw Chuck through an Instrumented Aluminium Ring. Procedia Eng. 132 (2015) 456–463.
  • [9] Estrems M., Arizmendi M., Zabaleta A.J., and Gil A., Numerical Method to Calculate the Deformation of Thin Rings during Turning Operation and its Influence on the Roundness Tolerance. Procedia Eng. 132 (2015) 872–879.
  • [10] Estrems M., Carrero-Blanco J., Cumbicus W.E., de Francisco O. and Sánchez H.T., Contact mechanics applied to the machining of thin rings. Procedia Manuf. 13 (2017) 655–662.
  • [11] Bajpai S., Optimization of workpiece size for turning accurate cylindrical parts. Int J Mach. Tool Des. Res. 12 (1972) 221–228.
  • [12] Maračeková M., Zvončan M. and Görög A. Effect of clamping pressure on parts inaccuracy in turning. Teh. Vjesn. 19(3) (2012) 509–512.
  • [13] Görög A., Görögová I., Research of the Influence of Clamping Forces on the Roundness Deviations of the Pipes Turned Surface. Res. Pap. Fac. Mater. Sci. Technol. Slovak Univ Technol 26(42) (2018) 47–54.
  • [14] Shawky A., Rosenberger T. and Elbestawi M., In-process monitoring and control of thickness error in machining hollow shafts. Mechatronics 8 (1998) 301–322.
  • [15] Beekhuis B., Stoebener D. and Brinksmeier E., Adapted Non-Circular Soft Turning of Bearing rings – Impact of process machine interactions on compensation potential. Procedia CIRP 1 (2012) 540–545.
  • [16] Stöbener D., Beekhuis B., Application of an in situ measuring system for the compensation of wall thickness variations during turning of thin-walled rings. CIRP Annals 62(1) (2013) 511–514.
  • [17] Jones F.D., Oberg E. and Horton H.L. and Henry H.R., Machinery’s handbook 27th Eds. Industrial Press, (2004).
  • [18] Schmid S.R., Hamrock B.J. and Jacobson B.O., Fundamentals of machine elements. 3rd ed. Boca Raton: CRC Press, 2013.
  • [19] Norm ISO 286-1:2010. Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes — Part 1: Basis of tolerances, deviations and fits. 2010.
  • [20] Güven F., Rende H., Influence of Contact Pressure on Surface Roughness Losses in Shrink Fitted Joints. In: 8th International Advanced Technologies Symposium. (2017) 3115–3119.
  • [21] Rende H., Güven F., Sıkı geçme bağlantılarında malzemeye bağlı yüzey pürüzlülüğü kayıp katsayısının belı̇rlenmesı̇. Mühendis ve Makina 665 (2015) 46–52.
  • [22] Volkmuth J., Lane S., Jung M. and Sjöblom U.,. Uneven residual stresses in bearing rings prior to hardening and their effect on shape changes after hardening. HTM - Haerterei-Technische Mitteilungen. 60 (2005) 317-322.
  • [23] Neslušan M., Mrkvica I., Čep R., Kozak D., and Konderla R., Deformations after heat treatment and their influence on cutting process. Teh Vjesn 18 (2011) 601–608.
There are 23 citations in total.

Details

Primary Language English
Journal Section Engineering Sciences
Authors

Fatih Güven 0000-0002-3570-9736

Publication Date June 25, 2020
Submission Date January 14, 2020
Acceptance Date April 10, 2020
Published in Issue Year 2020

Cite

APA Güven, F. (2020). Post-op bore profile estimation of workpiece clamped using three-jaw chuck. Cumhuriyet Science Journal, 41(2), 542-549. https://doi.org/10.17776/csj.674764

Cited By

An XFEM-Based Approach to Fatigue Crack Growth in Press-Fit Spur Gears
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering
https://doi.org/10.1177/09544089211072716