|
|
Manufacturing of the part "shaker" by cold sheet metal forming
Pekař, Pavel ; Císařová, Michaela (referee) ; Jopek, Miroslav (advisor)
The project elaborated design of technology production of the extract from the stainless deep drawing sheet 0,3 mm steel 17 240. Pursuant to of the literary pursuit a problem of the sheering and deep drawing was designed sheering and drawing with blank holder in combined tool. The tool is solved like customary rack with guiding rods clamped on the hydraulic press for forming of sheet PO 100 with nominal forming force 1 000 kN. Shearing die, drawing die and drawing punch are produced from tool steel 19 436.9 heat-worked according to drawing documentation.
|
|
|
Innovative production of the brake segment
Vágner, Lukáš ; Řiháček, Jan (referee) ; Jopek, Miroslav (advisor)
The project elaborates the design of the new technology production of the developed shape of the component, which is part of the drum break. The material of the component is structural steel S355J2C. The annual series produced is 100,000 pieces. From the possible production variants, the production by progressive cutting was chosen as the most suitable. Based on a literature study of the issue, an optimal method of production was proposed. The coil blank is fed to the designed tool by an unwinding and straightening device. The tool is clamped in the selected press LDO 800 A/S with the nominal forming force 8 MN. According to the economic calculations, the selling price of one manufactured part was set at 195 Kč. Production becomes profitable after making 55 283 parts.
|
|
|
Heat treatment of formed parts
Leška, Radim ; Jopek, Miroslav (referee) ; Lidmila, Zdeněk (advisor)
In the research part, the bachelor thesis deals with forming, the mechanism of plastic deformation and steels used for forming. It also describes the principles of heat treatment, specifically the methods used in the preparation of semi-finished products, pressings, and forgings, i.e., annealing, hardening, and tempering. In the practical part, several experiments were performed on C45 steel. The first of them verified the effect of strain hardening after compaction, the others were focused on recrystallization, full annealing, hardening, and tempering. The effect of deformation and heat treatment was assessed in terms of hardness, which was measured by the Vickers hardness test.
|
|
|
Manufacturing of mirrors clamp
Večeřa, Jaromír ; Jopek, Miroslav (referee) ; Podaný, Kamil (advisor)
This thesis presents a proposal for manufacturing of a mirror clamp, used for wall mounting. The clamp is made of stainless steel 1.4301 with a thickness of 1 mm. Manufacture series produces 40,000 pcs/year. After considering the individual manufacturing options, production in the combined process tool was chosen. The manufacture takes place in five steps, the utilization of the material is 84.1 %. This was completely proved by technological, design and control calculations. According to these calculations, a tool was designed with all of the technical documentation. Due to the forming force of 180 kN and the work of 113 kJ, the eccentric press T-30 CE from the company SanGiacomo Presse was chosen.
|
|
|
Part Manufacturing by Using Hydroforming and Its Optimization
Chrz, Jan ; Jopek, Miroslav (referee) ; Řiháček, Jan (advisor)
The thesis presents an analysis and optimization of the manufacturing process of a part using the technology of parallel hydroforming. Two circular blanks made of DC01 steel with a thickness of 1 mm serve as a semi-manufactured part. In one of the blanks, the supply of the forming medium is constructed using Flowdrill technology. Subsequently, the two blanks are laser welded together and then formed. Numerical simulation using PAM-STAMP software was used to analyse the manufacturing process. This analysis provided information on wall thinning, deformation size, critical points on the product and springback. The numerical simulation was verified on the basis of comparison with an experiment. The criterion for verification was the course of the thickness of the part. Based on the results of the simulation, an optimization is performed in the thesis. It consists in determining the minimum required pressure of the forming medium for pressing the part, particularly for different distances between the two formed sheets.
|
|
|
Production of a part of the TV bracket
Vodák, Marek ; Jopek, Miroslav (referee) ; Podaný, Kamil (advisor)
This master’s thesis is focused on the design of the technology to produce a part of the TV bracket. The part is made of steel sheet with a thickness of 2.5 mm. The structural steel S235JR was chosen as the most suitable material with following powder coating. From the possible variants, the production by progressive forming tool was chosen with respect to production requirements and a series size of 30 000 pieces by year. The part will be made in seven steps in designed tool and the total required force is 1013 kN. The production will take place on a mechanical press PCK12 from Bliss-Bret with a maximum force of 1250 kN. The final price of the part is 39.4 Kč.
|
|
|
Influence of anchor stamping process on the function of pressure control valve
Koumar, František ; Jopek, Miroslav (referee) ; Peterková, Eva (advisor)
The project elaborated a possible simplification of the tool which is used for stamping of the anchor of pressure control valve (PCV). PCV is manufactured at Bosch Diesel s.r.o. Jihlava. The resulting change will reduce the cost of tool production. Current tool can be manufactured only in one company in order to achieve precise dimensions. Based on the comparison of internal stamping, it obtains the dispersion of depths for further tests. Optimal a force is obtained from these tests, followed by limit sample tests. The tests show that modified tool is not suitable for stamping on the force for anchors with limited hardness. It is necessary to use a more suitable variant. A more suitable variant is stamping on the track. With this method, there will be less effect of the hardness of the anchor. The test on stamping on the track will be performed in the second half of 2020 and, if successfully validated, will be introduced into the series.
|
|
|
CNC Applications in Forming Processes
Pobořil, Martin ; Jopek, Miroslav (referee) ; Řiháček, Jan (advisor)
This thesis presents the study on CNC control and its usage in forming processes. It analyses the main elements which are essential for functionality of computed numerically controlled processes. It also comprises the basics of CNC programming and related software programmes. Individual technologies of forming are covered in terms of fundamental principles. Subsequently the technologies are described in relation to the CNC control – in theory and also the specific examples of machines and software programmes are given. The thesis considers advantages and disadvantages of each technology and its suitability for use in given application.
|
|
|
Production of gully
Švejda, Jakub ; Jopek, Miroslav (referee) ; Podaný, Kamil (advisor)
The project elaborated design of technology production of the gully – the rotational extract with flange from the deep drawing corrosion resistant sheet iron 1.4301. Pursuant to of the literary pursuit and calculation was designed drawing without thinning the wall in two operation and that in one instrument with two bottom holders enabling their combination into one stroke. The drawing instrument makes use of as standardised components as construction elements calculated using calculations and consist of three parts. The bottom and upper are magnetically clamped on the hydraulic drawing press Dieffenbacher PO 250, with nominal tensile force 2500 kN. Both drawing punches and drawing dies are produced from alloyed instrumental steel 19 436.9 heat-worked according to drawing documentation.
|
|
|
Design of wheel hub production
Šidlák, Filip ; Jopek, Miroslav (referee) ; Podaný, Kamil (advisor)
The thesis deals with the design the technology production of wheel hub for the automotive industry made of C45 steel. After the evaluation of suitable technologies, a die forging on a mechanical press was selected. On the basis of technology analysis, the component shape was modified, all allowances and dimensional tolerances were set. According to calculated forming force, the crank press LZK 3150B with nominal force 31, 5 MN from the manufacturer Šmeral Brno, a. s., was chosen. Manufacturing is divided into two operations, pre-forging and after that final forging. Design of dies is based on the ČSN 22 8306 standard and they are made of tool steel of grade 19 552 with the subsequent heat treatment. The dies have upper and lower ejector for easier removal of the forged piece.
|
guest ::
RSS feed.