National Repository of Grey Literature 150 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Manufacture of AC / DC adapter housing
Vašíček, Lukáš ; Ohnišťová, Petra (referee) ; Žák, Ladislav (advisor)
The bachelor's thesis proposes an injection mold for the production of a plastic adapter. Based on the evaluation of the technological possibilities of the production of a plastic product, the technology of plastic injection was chosen. The first part of the work is devoted to a theoretical explanation of plastic materials, injection molds and machines. The practical part presents and develops a complete design of the injection mold, including the selection of a suitable material. The mold is designed four times with a cold inlet insert. At the end of the work is a technical - economic evaluation of production.
Optimization of the injection process of a diesel engine dosing module component
Ohnút, Lukáš ; Podaný, Kamil (referee) ; Žák, Ladislav (advisor)
This diploma thesis deals with optimalization of the injection process of the part and its implementation into serial production. In the first step, the injection mold was tested and injection parameters were initially defined. In the next step, simulations were created in the CADMOULD program. These simulations calculated theoretical injection parameters and these were compared with the parameters set on the injection molding machines. Then, the shape measurement protocols were prepared, according to which the shapes in the cavities of the injection mold were optimized. Finally stress tests were performed, which detected problems in the injection process.
Manufacture of connector cover
Lukeštík, Tomáš ; Ohnišťová, Petra (referee) ; Žák, Ladislav (advisor)
The work presents a proposal for the production of the connector cover by injection molding from amorphous ABS polymer. Based on a literature study of injection technology and calculations, a two-part injection mold with four cavities, equipped with side sliding trolleys, was designed. The mold is composed of standardized components, some of which are modified. An Intec D100 / 380-B injection molding machine was chosen. The work is accompanied by drawing documentation of the assembly of the mold, molding plates and the designed side sliding trolleys.
Production of the Folding meter lock
Václavek, Petr ; Lidmila, Zdeněk (referee) ; Žák, Ladislav (advisor)
The thesis proposes a concept of manufacturing the folding meter lock. The part is made from DC01+LC steel of 0,3 mm thickness. The series size is 100 000 pcs/year. A forming in a progressive combination tool combining shearing, bending and stamping was chosen for the production, based on the analysis of possible solutions. The tool, designed on the basis of literary research of used technologies, produces the part in eleven steps exerting maximal force of 38,5 kN. The production will take place on an eccentric press LEN 40 C. The market price of 3,38 Kč for one piece was established by the technical and economic evaluation.
Manufacture of Chandelier Hinge
Mergeščíková, Lenka ; Jopek, Miroslav (referee) ; Žák, Ladislav (advisor)
The master’s thesis presents a design for the technology of manufacture of a chandelier hinge from the material ČSN 42 3005 (Cu99.5) with a sheet thickness of 0.5 mm. Due to the spherical shape of the part and the series 40 000 parts per year, the technology of deep drawing was chosen for two drawing operations, while the redrawing is performed by reverse deep drawing. Due to the nature of the component, the additional technology is shearing. The manufacturability of the part was verified using numerical simulation in the PAM-STAMP software. The forming process is performed using three forming tools on three different presses. For the first, combined tool, an LE 160C eccentric press is used. A hydraulic press ZHO100 is applied in the second tool for the reverse drawing, and finally, an eccentric press LEK160 is applied for the shearing in the third operation. With the selected profit value of 25 %, the final price for the component was set at CZK 104.17. The turning point occurs after reaching 16 248 parts.
Manufacturing of Trailer Connecting Joint
Vahala, Jiří ; Žák, Ladislav (referee) ; Řiháček, Jan (advisor)
The project elaborated design of technology production of the trailer connecting joint from the deep drawing sheet iron 11 320. Pursuant to of the literary pursuit a problem of the deep drawing and calculation was designed progressive tool concatenate four operations. The lower ejectors are using for ejecting components. The drawing instrument especially made of non-standardised components and it is designed for use on a hydraulic press CTH 250, with nominal tensile force 250 kN. Drawing punch and drawing die are produced from alloyed instrumental steel 19 436 heat-worked according to drawing documentation. The technical and economical evaluation was focused on the forming cost, which is 2 922 893 CZK in total.
Design of lighting cover production
Bahula, Jan ; Žák, Ladislav (referee) ; Podaný, Kamil (advisor)
The project elaborated design of technology production of the lighting cover – rotating extract from the deep drawing sheet iron DC01 0,5 mm thick. Pursuant to analyses of production and calculation was designed drawing in conventional instrument with holder in one operation and the cup is being wiped by the die. The drawing instrument make use of standardised and construction components and it is solving forms of customary stool clamped by clamps on the hydraulic press CUPS 40 DEU, with nominal tensile force 400 kN. Drawing punch and drawing die are produced from alloyed instrumental steel 19 436.9.
Production of a rotating vessel
Novák, Václav ; Žák, Ladislav (referee) ; Císařová, Michaela (advisor)
The thesis is concerned with the concept of an rotating vessel, that is a part of cotton candy machine. A drawing is cylindrical shape with circular a hole in the bottom, which is made of austenitic chrome-nickel steel 1.4301 with the thickness 1,5 mm. Due to the production volume 50 000 units per year, the pulling technology without wall thinning was choosen. The process of drawing will be performer in one operation. Due to calculated force, the ZHS 400 hydraulic press with a nominal force of 4 000 kN was chosen.
Manufacturing of a Cable Holder
Šimka, Radek ; Žák, Ladislav (referee) ; Řiháček, Jan (advisor)
The bachelor’s thesis proposes a design for the production technology of the cabling holder, situated in the outdoor part of the air conditioner. This product is made of steel sheet DC01 with a thickness of 1 mm. The production of this holder is set to be 200 000 pieces per year. A progressive die tool was selected as the most suitable type of production technology, based on a literature study of various production technologies. This enables to combine cutting and bending of steel sheets with the use of one tool device. Manufacture will be performed using a mechanical eccentric press LEN 63 C. All the necessary requirements of this device are satisfactory for the production.
Manufacturing of iron holder
Tichoň, Ondřej ; Žák, Ladislav (referee) ; Podaný, Kamil (advisor)
The project deals with design of manufacturing technology of the holder, which is used as a space for the iron to be placed. It is a component made of steel with a quality of 11 373.0 on the form of sheet metal with a thickness of 1,5 mm. Based on the studies of literature relevant to the topic of technologies of cutting, bending and hemming, a production process was developed. After performing technological, constructional and control calculations, a gradual cutter, bending and hemming tools were designed, for which further technical documentation was developed. Each tool consists inter alia of standardized components containing functional parts clamped in guides standing on eccentric presses. For progressive cutting, an eccentric press with designation S 250 was chosen due to meeting requirements for the size of the forming force and the dimensions of the tools, and the press with designation S 160 was used for further operations, which are bending and hemming.

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2 Žák, Luboš
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