Analysis of techniques of parts production and rolling-cutter drill bits assembling and their influence on the tool operational capacity

Bogomolov, R.M.

doi:10.33285/1999-6934-2020-4(118)-8-12

Cited by 2 publications

(3 citation statements)

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“…To study the energy-saving properties of the conveyor belt in Germany, a special test and stand were developed, described in the standard [3,4], representing a method for determining the rolling resistance of conveyor belts by supporting rollers, taking into account the width of the belt, the…”

Section: Consideration Of the Issuementioning

confidence: 99%

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Loading tests of retaining tricone bit bearing using physical model

Валиев¹,

Simisinov²,

Afanasiev³

2021

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Tricone bits are currently less commonly used as compared with PDC bits. Tricone bits are mainly used in drilling in difficult geotechnical conditions and in blasthole drilling in open pit mines. The main disadvantage of tricone bits is the relatively short life. The main cause of the age limit is failure of the retaining ball bearing due to destruction of raceway and journal shoulder under high contact and bending stresses. Based on the provisions of the similarity theory, the physical model of the retaining drill bit bearing has been manufactured. The paper presents the data of the retaining bearing testing using a friction and wear testing machine, namely, the temporal variations in temperature, frictional torque and clearances of bearings. The temperature and the heat rating of the bearing are related. In the extreme conditions of operation at deficiency of lubrications, the contact stresses in the rings and balls of bearing, as well as their temperatures exceed greatly the allowable values. The authors propose using the procedure in engineering of a roller drill bit.

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Section: Consideration Of the Issuementioning

confidence: 99%

“…On this basis, it is of the current concern to actuate studies aimed at design improvement of roller drill bits. Many researchers have addressed the design improvement of roller drill bits and their availability enhancement [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Loading tests of retaining tricone bit bearing using physical model

Валиев¹,

Simisinov²,

Afanasiev³

2021

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“…Thus, it is relevant to undertake the research aimed to improve the design of roller bits to ensure their high penetration rate. Many researchers addressed the design development and performance improvement of the roller drill bits [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Thermal model of cone drill bit bearing with air flushing

Valiev¹,

Simisinov²,

Afanasyev³

2022

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Analysis of techniques of parts production and rolling-cutter drill bits assembling and their influence on the tool operational capacity

Cited by 2 publications

References 0 publications

Loading tests of retaining tricone bit bearing using physical model

Loading tests of retaining tricone bit bearing using physical model

Thermal model of cone drill bit bearing with air flushing

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