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Research Papers

Technological Assurance of High-Efficiency Machining of Internal Rope Threads on Computer Numerical Control Milling Machines

[+] Author and Article Information
Anna Neshta

Faculty of Technical Systems and
Energy Efficient Technologies,
Sumy State University,
2 Rymskogo-Korsakova Street,
Sumy 40007, Ukraine
e-mail: anna.neshta@i.ua

Dmytro Kryvoruchko

Faculty of Technical Systems and
Energy Efficient Technologies,
Sumy State University,
2 Rymskogo-Korsakova Street,
Sumy 40007, Ukraine
e-mail: dmytro.kryvoruchko@gmail.com

Michal Hatala

Faculty of Manufacturing Technologies
with a Seat in Presov,
Technical University of Kosice,
1 Bayerova Street,
Presov 08001, Slovak Republic
e-mail: michal.hatala@tuke.sk

Vitalii Ivanov

Faculty of Technical Systems and
Energy Efficient Technologies,
Sumy State University,
2 Rymskogo-Korsakova Street,
Sumy 40007, Ukraine
e-mail: ivanov@tmvi.sumdu.edu.ua

Frantisek Botko

Faculty of Manufacturing Technologies
with a seat in Presov,
Technical University of Kosice,
1 Bayerova Street,
Presov 08001, Slovak Republic
e-mail: frantisek.botko@tuke.sk

Svetlana Radchenko

Faculty of Manufacturing Technologies
with a seat in Presov,
Technical University of Kosice,
1 Bayerova Street,
Presov 08001, Slovak Republic
e-mail: svetlana.radchenko@tuke.sk

Dusan Mital

Faculty of Manufacturing Technologies
with a seat in Presov,
Technical University of Kosice,
1 Bayerova Street,
Presov 08001, Slovak Republic
e-mail: dusan.mital@tuke.sk

1Corresponding author.

Manuscript received July 26, 2017; final manuscript received November 28, 2017; published online May 14, 2018. Assoc. Editor: Radu Pavel.

J. Manuf. Sci. Eng 140(7), 071012 (May 14, 2018) (8 pages) Paper No: MANU-17-1475; doi: 10.1115/1.4039062 History: Received July 26, 2017; Revised November 28, 2017

The analysis of various methods of machining of rope internal thread ISO 10208, DIN 20317 has been carried out and the criteria of high-efficiency machining have been formulated. The concept of the method has been developed, which supposes the designing of the construction of noncore tool and the calculation of the parameters of mechanical trajectory with the purpose of ensuring the machining per one pass on the computer numerical control (CNC) milling machine. The compensation procedure of dimensional wear of insert has been developed. While machining the production batch of the parts in an experimental way, the optimum cutting conditions have been determined which allow ensuring the maximum efficiency on reaching the required roughness and the dimensional accuracy of the profile of rope thread. The performed statistical analysis of the machined parts allowed to establish that dispersions of the actual values of profiles' roughness follow Gauss' law. In an experimental way, it has been proved that the application of the proposed method increased the efficiency of machining of the internal rope thread by 2.5 times. On the basis of comparison of engineering-and-economical performance, the efficient fields of application of high-efficient method of machining of the rope threads have been determined.

Copyright © 2018 by ASME
Topics: Machining , Thread , Cutting , Ropes , Wear
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References

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Figures

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Fig. 1

Parameters of the profile of the rope internal thread in according to ISO 10208

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Fig. 2

The scheme of allowance cutting while turning by form cutter with application of the standard multipass cycle of thread cutting

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Fig. 3

The model of turning by form cutter with application of the standard multipass cycle of thread cutting

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Fig. 4

The scheme of allowance cutting while turning by standard cutter with variable depth of cut

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Fig. 5

The model of turning by standard cutter with variable depth of cut

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Fig. 6

The scheme of allowance cutting while line turning of the internal rope thread by the standard cutter: (а) rough finish and (b) final machining

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Fig. 7

The model of the line turning by the standard cutter

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Fig. 8

The concept of the high-efficiency machining

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Fig. 9

The adjustment scheme of the dimensional tool wear correction of the insert

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Fig. 10

Kinematic scheme of noncore tool motion [24]

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Fig. 11

The construction of the multipoint-cutting noncore tool

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Fig. 12

The body of drill bit

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Fig. 13

Noncore tool for machining of the internal thread R32 ISO 10208

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Fig. 14

Adjustment of the CNC machine on the machining of the internal rope thread R32 by the noncore tool

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Fig. 15

Parameters of the profile of internal rope thread R32 after machining in the axial section

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Fig. 16

The illustration of the process of compensation of dimensional wear

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Fig. 17

Statistical distribution of the roughness of internal rope thread R32

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Fig. 18

The diagram of the cutting time of machining of the internal rope thread. R32 ISO 10208 by considered methods of the helix surfaces machining.

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