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Title:PREGLED IN ANALIZA SODOBNIH POSTOPKOV IZSEKOVANJA PLOČEVINE
Authors:Pernat, Anton (Author)
Pahole, Ivan (Mentor) More about this mentor... New window
Ficko, Mirko (Co-mentor)
Files:.pdf UNI_Pernat_Anton_2010.pdf (5,09 MB)
 
Language:Slovenian
Work type:Undergraduate thesis (m5)
Organization:FS - Faculty of Mechanical Engineering
Abstract:Postopki in obdelovalni stroji za izsekovanje pločevine so dokaj dobro raziskani in primerno opisani v literaturi. Gre predvsem za dlje časa poznane, dobro preizkušene postopke in izvedbe strojev. V uporabi ali v razvoju pa so tudi že stroji in postopki s povsem na novo razvitimi mehanizmi izsekovanja, ki obljubljajo krajše proizvodne čase, boljšo obstojnost orodja in nižje stroške proizvodnje. Ti stroji in postopki v slovenski literaturi skorajda niso omenjeni, zato je njihov pregled zajet v tem delu. Znani izsledki samega postopka izsekovanja veljajo za nižje hitrosti izsekovanja, nekje do 150 udarcev v minuti. Novi obdelovalni stroji na področju izsekovanja pa omogočajo tudi več kot 10-kratno povečanje števila udarcev, tam do 2000 v minuti in več. S tem se na obdelovancih pojavijo povsem drugačne, ugodnejše obremenitve, ki vplivajo na večjo natančnost končnih izdelkov. Na tem mestu se srečamo tudi z izrazom »visokohitrostno izsekovanje« (ang. High Speed Punching). Nove možnosti zniževanja stroškov se tako kažejo na področju obdelovalnih strojev, ki so vse manjši in zmogljivejši (Bruderer, Schuler, Trumpf). Zelo zanimiv je način izsekovanja »brez uporabe obdelovalnih strojev« — v mislih imamo visokohitrostne elektromagnetne stiskalnice (izdeluje jih ameriško podjetje WinSet Technologies, LLC.), ki niso kaj dosti večje od izsekovalnega orodja samega, imajo zelo malo gibajočih se delov in s tem manj možnosti za nepričakovane napake v njihovem delovanju ter nenačrtovane izpade proizvodnje. Opisana je še cela vrsta drugih postopkov, ki utegnejo v nekaj letih prodreti na trg in pomembno vplivati na sodobno proizvodnjo izsekovanja pločevin.
Keywords:visokohitrostno izsekovanje, izsekovalna orodja, izsekovalni stroji, sodobni izsekovalni postopki, visokohitrostna elektromagnetna stiskalnica
Year of publishing:2010
Publisher:[A. Pernat]
Source:Maribor
UDC:621.691.07(043.2)
COBISS_ID:14339862 Link is opened in a new window
NUK URN:URN:SI:UM:DK:FWROO5AR
Views:1984
Downloads:471
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Categories:KTFMB - FS
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Secondary language

Language:English
Title:REVIEW AND ANALYSIS OF CONTEMPORARY TECHNIQUES OF SHEET METAL PUNCHING
Abstract:Procedures and working machines for punching sheet metal are relatively well investigated and well established in literature. This is the case with a long established and well-known procedures and working machines. However, the working machines and procedures with a completely new development of punching mechanisms have been in use or in progress. They enable shortest production times, better tool persistence and lower costs of production and have not been described in the Slovene literature yet. Therefore this diploma thesis offers a comprehensive overview of these machines and procedures. The established results of the research of punching described in literature are valid for lower speed of punching, i. e. about 150 strokes per minute. The new working machines in the field of punching can reach more than 10-times higher working speeds, i. e. about 2000 strokes per minute. In such circumstances we achieve different and more advantageous loading on working pieces, which affect the precision of working products. In this case we talk about the High Speed Punching. The new possibilities of lowering production costs are in working machines, which are smaller and more efficient (Bruderer, Schuler, Trumpf). An interesting example of punching is also “punching without using a working machine”, in which we think of high speed electromagnetic punch presses (made by the USA enterprise WinSet Technologies, LLC.), which are not bigger than punching tool itself. They have a very small number of moving parts, which means that there are fewer possibilities for unexpected defects, which cause unplanned losses in current production. There are many more new punching procedures described in this work, which may appear in market in few years and significantly affect the contemporary production of punching sheet metal.
Keywords:punching, high speed punching, punching tools, punching machines, contemporary procedures of punching, high speed electromagnetic punch presses


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