Research Papers

Influence of Deformational Cutting Data on Parameters of Polymer Slotted Screen Pipes

[+] Author and Article Information
Nikolay Zubkov

Department of Cutting Tool Engineering,
Bauman Moscow State Technical University,
2-ya Baumanskaya Street 5,
Moscow 105005, Russia
e-mail: zoubkovn@bmstu.ru

Arkady Sleptsov

Department of Cutting Tool Engineering,
Bauman Moscow State Technical University,
Moscow 105005, Russia
e-mail: arkady.sleptsov@sandvik.com

1Present address: AB Sandvik Coromant, Mossvägen 10, Sandviken 811 34, Sweden.

2Corresponding author.

Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received October 01, 2014; final manuscript received May 25, 2015; published online September 9, 2015. Assoc. Editor: Guillaume Fromentin.

J. Manuf. Sci. Eng 138(1), 011007 (Sep 09, 2015) (7 pages) Paper No: MANU-14-1501; doi: 10.1115/1.4030827 History: Received October 01, 2014

A method for manufacturing polymer slotted screen pipes by the use of deformational cutting (DC) technology is presented in this paper. The slotted macrostructure is created by cutting through the pipe wall without chip removal. These screen pipes can be made from thermoplastic tubular workpieces which can either be standard pipes or have internal longitudinal grooves. Descriptions of the manufacturing method, process kinematics, required equipment, and tool for making slotted screen pipes are given. The influence of tool angles and process parameters on dimensions and accuracy of manufactured through slots is analyzed. The theoretical equations are verified by experimental results.

Copyright © 2016 by ASME
Topics: Pipes , Polymers , Cutting
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Fig. 1

Concept of DC: shaping of flat surfaces (a) and turning of cylindrical surfaces (b)

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Fig. 2

Process kinematics of slotting pipe having internal longitudinal grooves (a) and for slotting conventional pipe (b), half-section of pipe with internal grooves (c), and crosscut of filtering slots (d). 1—primary rotational movement of the workpiece, 2—tool feed movement, 3—primary rotational movement of the tool, and 4—circular feed movement of the workpiece

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Fig. 3

Computer-aided design model (a) and photo (b) of screen pipe with helical rows of through wall slots. Photos of compressed (c) and stretched (d) screen pipes.

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Fig. 4

Slotting of pipe having internal grooves on lathe: 1—carriage, 2—chuck, 3—follow rest with ball bearing and reducing bushing, 4—DC tool, and 5—workpiece

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Fig. 5

Lathe modernized for slotting by DC technology: 1—tool spindle, 2—follow rest, and 3—workpiece

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Fig. 6

Tool spindle for slotting: 1—AC motor, 2—spindle housing, 3—gears transmitting torque from the AC motor to the spindle, 4—DC insert, and 5—tool block

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Fig. 7

Theoretical graph for influence of tool rotational speed on helix angle of slot rows

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Fig. 8

Scheme of DC slotting of pipe having internal longitudinal grooves: I—initial DC tool position, II—final DC tool position, s—pipe wall thickness, dg—depth of internal longitudinal groove, ap—depth of cut, fa—axial feed, h—fin thickness, b—slot width, κr—tool major cutting edge angle, κr1—tool minor cutting edge angle, and τ—slot inclination angle

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Fig. 9

Fin retraction angle for different feeds and penetration depths

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Fig. 10

Comparison of experimental and calculated values of fin thickness versus feed for ap = 4 mm (a) and ap = 5 mm (b)

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Fig. 11

Tool trajectory when slotting in lathe

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Fig. 12

Nonuniformity of slot width for adjustable screen pipes (bright-field photo)

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Fig. 13

Relative motion of the tool when cutting a helical slot row. All motions are applied to the tool. 1—relative tool trajectory when making previous slot, 2—relative tool trajectory when making considered slot, 3—relative tool motion caused by circular feed, and 4—workpiece outer surface.

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Fig. 14

Comparison of experimental and calculated values of fin thickness along the fin for different pipes with helical rows of slots. The parameters of the pipes are shown in Table 2.




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