MD2674B2 - Process for electroerosion machining of pieces with complicated contour and oblique surfaces - Google Patents

Process for electroerosion machining of pieces with complicated contour and oblique surfaces Download PDF

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Publication number
MD2674B2
MD2674B2 MDA20020162A MD20020162A MD2674B2 MD 2674 B2 MD2674 B2 MD 2674B2 MD A20020162 A MDA20020162 A MD A20020162A MD 20020162 A MD20020162 A MD 20020162A MD 2674 B2 MD2674 B2 MD 2674B2
Authority
MD
Moldova
Prior art keywords
angle
axis
guide roller
electrode
precession
Prior art date
Application number
MDA20020162A
Other languages
Romanian (ro)
Other versions
MD20020162A (en
MD2674C2 (en
Inventor
Ion Bostan
Sergiu Mazuru
Maxim Vaculenco
Nicolae Trifan
Original Assignee
Universitatea Tehnica A Moldovei
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universitatea Tehnica A Moldovei filed Critical Universitatea Tehnica A Moldovei
Priority to MDA20020162A priority Critical patent/MD2674C2/en
Publication of MD20020162A publication Critical patent/MD20020162A/en
Publication of MD2674B2 publication Critical patent/MD2674B2/en
Publication of MD2674C2 publication Critical patent/MD2674C2/en

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  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Turning (AREA)

Abstract

Inventia se refera la procedeele de prelucrare prin electroeroziune a metalelor si poate fi utilizata la prelucrarea suprafetelor conjugate ale diverselor piese ale masinilor. Procedeu de prelucrare prin electroeroziune a pieselor cu contur complicat si suprafete oblice efectuat cu un electrod-sarma, care se infasoara pe doua elemente de reazem, amplasate din doua parti ale piesei pentru prelucrare, care consta in aceea ca pe masa turnanta a masinii-unelte legata rigid cu sistemul fix dreptunghiular de coordonate Îxyz, se fixeaza piesa-electrod, axa carei coincide cu axa z, totodata, electrodul-sarma este legat rigid cu sistemul mobil dreptunghiular de coordonate Îx1y1z1. Originea sistemelor dreptunghiulare de coordonate Îxyz si Îx1y1z1 coincide cu centrul de precesie, axa z1 descrie o suprafata conica cu varful in centrul de precesie, formand unghiul de nutatie cu axa z. Electrodului-sarma, amplasat in canelura in forma de spirala cu sectiunea arcuita executata pe suprafata rolei de ghidare si amplasat sub un unghi fata de axa rolei de ghidare, care trece prin centrul de precesie, sub un unghi fata de planul format de axele x1y1, i se comunica o miscare suplimentara fata de axele de coordonate x1 si y1, in concordanta cu relatia:x=(j+(dsr+rf)/tg()(1-cos()cos(sin(,y=(j+(dsr+rf)/tg()(sin2(+ cos(cos2(),z=(j+(dsr+rf)/tg()(sin(cos(),unde ( este unghiul conicitatii rolei de ghidare;dsr - diametrul electrodului-sarmei;j - jocul intre electrozi;rf - distanta de la axa rolei de ghidare pana la canelura in forma de spirala;( - unghiul de nutatie, egal cu unghiul dintre axele z si z1;( - unghiul de precesie.La o rotatie a arborelui manivelei masinii-unelte, electrodul-sarma efectueaza o miscare de precesie si oscilatorie in jurul axei rolei de ghidare, iar piesa-electrod se roteste sub un unghi determinat de corelatia(=(Z1-Z2)2(/Z2,unde Z1 este numarul de dinti ai rotii dintate pentru prelucrare;Z2 - numarul ciclurilor de precesie.Suprafata sectiunii canelurii in forma de spirala a rolei de ghidare este egala cu suprafata sectiunii electrodului-sarma. ŕThe invention relates to the processes of metal erosion processing and can be used to process the conjugated surfaces of the various parts of the machines. Procedure for electro-erosion processing of parts with complicated contour and oblique surfaces made with a wire electrode, which is wrapped on two supporting elements, located on two parts of the workpiece, which consists of the rotating table of the machine tool. rigidly linked to the fixed rectangular coordinate system Îxyz, the electrode piece is fixed, the axis coinciding with the z axis, at the same time, the wire electrode is rigidly linked to the mobile rectangular system Îx1y1z1. The origin of the rectangular coordinate systems Îxyz and Îx1y1z1 coincides with the precession center, the z1 axis describes a conical surface with the tip in the precession center, forming the feeding angle with the z axis. Wire electrode, located in the spiral groove with the arched section executed on the surface of the guide roller and placed at an angle to the axis of the guide roller, passing through the precession center, at an angle to the plane formed by the x1y1 axes, an additional movement is communicated to the x1 and y1 coordinate axes, according to the relation: x = (j + (dsr + rf) / tg () (1-cos () cos (sin (, y = (j + (dsr + rf) / tg () {sin2 (+ cos (cos2 (), z = (j + (dsr + rf) / tg () (sin (cos (), where (is the angle of the conicity of the guide roller; dsr - electrode diameter) - wire; j - play between the electrodes; rf - distance from the axis of the guide roller to the groove in the spiral form; (- the angle of nutrition, equal to the angle between the axes z and z1; (- the angle of precession. At a rotation of the crankshaft crank shaft, the wire electrode performs a precision and oscillatory movement around the axis of the guide roller, and the electrode part rotates at an angle determined by the correlation (= (Z1-Z2) 2 (/ Z2, where Z1 is the number of teeth a and gear wheels for processing; Z2 - the number of precession cycles. The surface of the groove section in the spiral shape of the guide roller is equal to the surface of the electrode-wire section. à

MDA20020162A 2002-06-07 2002-06-07 Process for electroerosion machining of pieces with complicated contour and oblique surfaces MD2674C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MDA20020162A MD2674C2 (en) 2002-06-07 2002-06-07 Process for electroerosion machining of pieces with complicated contour and oblique surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MDA20020162A MD2674C2 (en) 2002-06-07 2002-06-07 Process for electroerosion machining of pieces with complicated contour and oblique surfaces

Publications (3)

Publication Number Publication Date
MD20020162A MD20020162A (en) 2004-06-30
MD2674B2 true MD2674B2 (en) 2005-01-31
MD2674C2 MD2674C2 (en) 2005-12-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
MDA20020162A MD2674C2 (en) 2002-06-07 2002-06-07 Process for electroerosion machining of pieces with complicated contour and oblique surfaces

Country Status (1)

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MD (1) MD2674C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD3623G2 (en) * 2005-02-07 2009-01-31 Технический университет Молдовы Gearwheel-tool for array processing (variants) and process for working thereof (variants)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU707744A1 (en) * 1977-10-05 1980-01-05 Предприятие П/Я Р-6930 Method of electro-erosion cutting-out of articles with complex contour and inclined walls
SU1102663A1 (en) * 1982-07-19 1984-07-15 Всесоюзный Научно-Исследовательский И Конструкторский Институт По Оборудованию Для Шинной Промышленности Method of electro-erosion machining of shaped surfaces

Also Published As

Publication number Publication date
MD20020162A (en) 2004-06-30
MD2674C2 (en) 2005-12-31

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Legal Events

Date Code Title Description
KA4A Patent for invention lapsed due to non-payment of fees (with right of restoration)
MM4A Patent for invention definitely lapsed due to non-payment of fees