Odsesovalna naprava na 5-osnem CNC obdelovalnem stroju : diplomsko delo - visokošolski strokovni študij

Pintarič, Peter (author), Bučar, Bojan (mentor), Medič, Marijan (reviewer)

V večini podjetij, kjer imajo 5-osne CNC obdelovalne stroje, je največji problem odsesavanje odrezkov, saj so vrtilne hitrosti orodja zelo visoke (do 24.000 min-1) ter premeri orodij dokaj veliki. Pri tem pa moramo upoštevati še rotacijo 4. in 5. osi agregata, ki nam preprečujeta fiksno pritrditev odsesovalnega sistema. Za merjenje smo uporabili merilni sistem z vakuumsko črpalko ter po metodi vzorčenja zraka ugotovili ustreznost odsesovalne naprave. Izvedli smo 10 meritev in jih analizirali. Ugotavljali smo, kako na količino prašnih delcev v zraku vplivata oblika in velikost obdelovanca ter premer in vrtilna hitrost orodja. Z večjim premerom orodja in večjo vrtilno hitrostjo se količina prašnih delcev v zraku povzpne čez mejne dovoljene vrednosti. Že pred postavitvijo celega sistema pa smo ugotovili, da se bo učinkovitost glede mejnih zmožnosti obdelave CNC stroja zelo poslabšala. Izmerili smo tudi kolikšen hrup povzroči odsesovalna naprava ter ugotovili, da izmerjene vrednosti v nekaterih opcijah tudi presegajo dovoljene meje.

• Language: Slovenian
• Keywords: odsesovanje, 5-osni CNC odsesovalni stroj, velikost obdelovancev, premer orodja, hrup
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [P. Pintarič]
• Year: 2009
• Number of pages: X, 45 f., [16] f. pril.
• PID: 20.500.12556/RUL-426
• UDC: 630*829
• COBISS.SI-ID: 1774473
• Publication date in RUL: 11.07.2014

Secondary language

• Language: English
• Title: Dust exhausing device on 5-axis CNC machining center : graduation thesis - higher professional studies

Abstract

The biggest problem in firms using 5-axis CNC machining centres is the suction of cuttings, because the rotation speed of these machines is very high (up to 24,000 min-1), and the diameters of the tools rather big. We also need to consider the rotation of 4th and the 5th axe of the aggregate, which prevent fixing of the suction system. A measurement system with a vacuum pump was used, and a method of air sampling adopted to establish suitability of the suction tool. 10 measurements were performed and analysed. It was established how shape and largeness of work-pieces together with diameter and rotation speed influence the amount of dust particles in the air. Using a bigger diameter of the equipment and higher rotation speed the amount of dust particles climbs over allowed values. Even before setting up of the whole system, it was found out that the efficiency regarding boundary options of CNC-machine tool working will deteriorate. The noise of the suction machine was also measured, and it was found out that the measured amounts in some options climbed above the allowed levels.

• Keywords: suction, 5-axis CNC-machining centre, size of work-pieces, diameter of tools, noise