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Verification of the properties crimp joint
Horák, Ondřej ; Hruška, Ondřej (referee) ; Lidmila, Zdeněk (advisor)
The bachelor thesis deals with the description of mechanically unbreakable conections, called crimp connection. The most often used materials are copper, brass and bronze. The crimp connections are divided into joints with an open tube, closed tube and crimp isolation. The joint is formed by bending of the parties of the crimp, where a consequent plastic deformation results in a mechanically non-detachable joint. The post production control of the crimp consists of visual inspection, measure of the crimp height, supplementary tearing test and cutting the crimp. No visual defect in testing two types of crimp connections was detected. The measured crimp height corresponds to the values specified by the manufacturer. During the tear test, the desired values were not achieved by incorrectly attaching the wire to the clamping mechanism and no manufacturing defects were detected at the final check of the cut.
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Bulk forming technology of connecting pin
Trnka, Filip ; Šlais, Miroslav (referee) ; Forejt, Milan (advisor)
The project elaborated in frame of engineering studies branch M-STG proposes a technology of connecting pin – structural steel 11 320 5R. The technological calculations were performed and the production procedure was devised on the basic on the literary study of cold bulk forming with concentration on the extrusion and upsetting. Forming machine was design HATEBUR BKA-3 with a nominal power 1800 kN. The component is made in four forming operations. Extruder will be made from tool steel 19 830, extrusion die from tool steel 19 830 and clamp ring from tool steel 19 740.
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Production single parts "Bracket" from sheet metal
Buchta, Petr ; Lidmila, Zdeněk (referee) ; Žák, Ladislav (advisor)
The project which was developed in the framework of a bachelor's degree submits a proposal of production of steel material 11373, shearing and subsequent bending. The main topic of this thesis was to create tools that would allow a simple and inexpensive production of components. Tools have been designed and manufactured on the basis of literary studies issues, associated with shearing and bending. The function parts of the instruments are made of tools steel class 19.
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Simulation of rolling operation using explicit FEM
Bezrouková, Martina ; Zemčík, Oskar (referee) ; Zouhar, Jan (advisor)
The purpose of this work is to introduce explicit finite element method (FEM) and to familiarize with commercial software tools witch are capable to perform simulations. The technological conditions and the scope of application of roller burnishing are described in subsequent part. The simulation model of roller burnishing was created. Software ANSYS LS-DYNA was used to make computations. The results of simulation and technical and economical benefits of roller burnishing are presented in the conclusion.
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Production of high pressure hydraulic filter housing
Podloucký, Lukáš ; Lidmila, Zdeněk (referee) ; Císařová, Michaela (advisor)
The Bachelor’s thesis is focused on solving the problem of production of high-pressure hydraulic filter by cold extrusion technology. The initial semi-finished product is a C15R steel cap with a diameter of 104 mm and a height of 57.9 mm. The production series assumes a quantity of 30,000 pieces per year. The technologicality of the product evaluation was based on technical literature knowledge and professional experience. The technological process was chosen subsequently. This process counts with the extrusion in two operations with mid-operational recrystallization annealing and with the use of surface treatment by phosphating and soaping. An Eitel 1 250 press with a nominal forming force of 12 500 kN is designed for the production. The design of the forming tools takes into consideration the shape of the extrusion, technological principles and mathematically verified safety. The material of the die and punch is high-speed tool steel 19 830. The material of the ejector it is high-alloy tool steel 19 437. The technological process and force calculations are verified by simulation of the forming process created in the Simufact Forming program.
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Bulk forming technology of piston of disk brake
Kiza, Jakub ; Jopek, Miroslav (referee) ; Forejt, Milan (advisor)
The master’s thesis presents a proposal for the manufacturing technology of a disk brake piston made of material ČSN 41 2010 for a car brake caliper. Method of cold volume forming was chosen due to the production requirement of 200 000 parts per year, convenient axisymmetric shape of the part and required size tolerance. Based on study of chosen technology, production technique, which contains calibration and backward extrusion, was designed. Technological computations and optimalization of tool dimensions were done for the chosen production technique. The manufacturability of the part was verified by numerical simulation in Simufact Forming software. Because of unavailability of automatic cold forming machine designed for bigger sized parts on the market, the forming process is done by two forming tools with use of INWORK 700 hydraulic press. For the selected profit of 20 % the price for the part was set at 26,8 Kč. The turning point was determined as 52 745 pieces.
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Production of a hollow pin by cold forming
Šanca, Kristián ; Řiháček, Jan (referee) ; Jopek, Miroslav (advisor)
The hollow pin with a length of 45 mm and a diameter of 28 mm made of 12 050 steel is produced by cold cold forming. It showed defect-translation and the goal was to eliminate it by optimization. 10 variants were proposed, of which No. 10 was without defects and the goal of the work was met. The forming process was simulated by Simufact Forming software. The semi-finished product is a block made of a round bar 18 x 35.68. The part is manufactured on a process tool for 4 operations by a combination of upsetting and extrusion. The machine used is the CBF-204L automatic machine. The required force is 3 042 kN. The price of 1 piece is CZK 19.59. 120,000 pieces are produced annually.
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Forming technology production of window hanger.
Štejnar, Radek ; Šlais, Miroslav (referee) ; Forejt, Milan (advisor)
An objective of the bachelor’s thesis is the solution of forming technology production of window hanger by means of backward extrusion and elaboration of study concerning cold bulk forming. Required component is made of material ČSN 41 1320 5R and rounded chock with dimension of 14,6h9 - 25,3 mm is selected as semifinished product for production. Generally 2 alternatives of technology process were assessed whereas technological and strength calculations are executed utilizing computing support of TVÁŘENÍ and OPTIM97 software. Component is produced within 4 operations including cutting of wire. Multi-stage cold forming press TPZK 25 made by ŠMERAL a.s. Brno producer was chosen for designed technology. Production tools are made of high speed tool steel 19830.
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