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Technical sciences ISSN 23075732

621.763

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L.D. PITULEI, R.T. KARPYK, I.O.SHULIAR Ivano-Frankivsk National Technical University of Oil and Gas

THE STUDY OF THE OPTIMAL PARAMETERS FOR PRESSING OF THE REPLACEABLE ROLLER BITS OF

THE DRILLING BITS

Annotation The problem of reliability of the mounting of replaceable bits in the roller bit body of the drilling bit is considered since the lack of recommendations for optimal parameters of pressing adversely affects stability index of the rock drilling bits. In the study, specific working conditions of pressure coupling and the difference between elastic modulus of its elements have been considered.

As a criterion for restraint evaluation, the restraint value of the bit knockout was adopted. The study has shown that with the set pressure range of the bit the body of the roller bit for the replaceable bits of certain sizes, their reliable mounting can be achieved.

Keywords: drilling bit, roller bit, bit, liner, coupling, pressing in, knockout, pressure, specific pressure.

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References

1. Sharoshechnye dolota. Mejdunarodnyy translyator-spravochnik: Mejdunarodnaya injenernaya e`nciklopediya / [Pod nauch. red.

V.Y. Kershenbauma, A.V. Torgashova]. M, Nedra, 2000, 245 p.

2. Bogomolov R.M., Morozov L.V., Nosov N.V., Kremlev V.I. Issledovanie napryajenno-deformirovanogo sostoyaniya pri zapressovke tverdosplavnyh elementov voorujeniya sharoshki burovogo dolota, Vesnik Samar. gos. tehn. un-ta. Ser. Tehn. Nauki, 2005,Vyp. 39, pp. 98-103.

3. Shackiy I.P. Shulyar I.O., Kornuta V.A., Ropyak L.Y. Racionalniy pidbir natyagu u ze'dnanni zubcya z sharoshkoyu, Progresivni tehnologii i sistemi mashinobuduvannya, 2013,Vip. 45. pp. 17 - 25.

   

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