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Suggestions for changes in the production of a part "revolver trigger"
Jiráček, Jan ; Chladil, Josef (referee) ; Kalivoda, Milan (advisor)
The study deals with production technology of “revolver trigger“. Final assembly is short firearm ALFA Steel and its model series of ALFA-PROJ, Ltd company. Introduction submits an explanation of trigger technology suitability. The following analysis describes current manufacturing process, which has manufacturing inaccuracy problem. Furthermore rootcause of manufacturing inaccuracy was determined and analysis of suggestions for changes (including modifications of technological process) was realized. Based on experiment dimensions were measured on provided samples of suggest production in Technical Control Department. Dimensions of triggers manufactured by current production were verified during the experiment too. Results were compared according to the rejects of production. In the final phase of the study manufacturing labor costs were compared for the one piece of trigger with the new suggested technology.
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Possibilities of the CAM software PowerMILL 2018 for machining of a component for a firearm
Drmota, Josef ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
The subject of this diploma thesis deals with possibilities of the CAM software PowerMILL 2018 for machining of a component for a firearm. The thesis consists of a research focused on the issue of combined firearms, the specification of the part the thesis deals with and the analysis of the materials used. The practical chapters solve component clamping, tool selection and subsequent elaboration of the NC programs. At the end of the thesis there is shown the simulation of machinig including collison control.
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Teaching shooting and taking into account of personal defence
Hlavička, Petr ; Fiala, Miloš (advisor) ; Opelka, Luboš (referee)
Title: Teaching shooting and taking into account of personal defence. Objectives:. The main goal of this thesis is to describe a problem of using a firearm for self- defence. Methods: The used method is descriptive analysis Results: The result of this thesis is that training of defensive shooting is conditional on basic shooting skills and that it improves chance of success in case of defending your life with firearm. Keywords: Firearms, defensive, shooting, gun, law, pistol, target, aiming
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Dynamic Analysis of Selected Firing Mechanisms of Firearms
Hussliková, Veronika ; Hadaš, Zdeněk (referee) ; Slažanský, Martin (advisor)
Bachelor thesis engages in analysis of firing mechanisms of chosen firearms. In introductory part of the thesis, there is a research made which involves gun problems, theoretical basis of gun theory is summarized and detailed description of firing mechanism of some types of guns is given. Alternatives of solution of the set assignment are analyzed at the end of the theoretical introduction. Practical part of the thesis deals with firing mechanisms’ analysis of four different types of firearms and subsequently with theoretical calculation of initiation energy and impact speed of the firing pin. This calculation is in conclusion applied on some specific guns. Final output is the determination of initiation energy, impact speed of the firing pin and safety in safe firing of the bullet's primer.
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Deriving and Application of Analytical Design of Hammerspring in Firearms
Vobejda, Radek ; Polzer, Stanislav (referee) ; Slažanský, Martin (advisor)
The thesis deals with inference of analytic relations for calculation of pressure helical coil spring and considerates usage possibilities of simplified relations. In the thesis there is introduced analytic computation of slightly curvatured rod theory completed by finite element method calculations. The thesis describes two springs of firearm, which weren’t able to achieve required functionality. After this there was created a plan of concept particular spring on the base of derivated relations, which should be able to meet operative conditions.
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Production technology of part barrel shroud
Jiráček, Jan ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
The study deals with technology of "sport steel" barrel shroud part made from a rod semi-product. It makes part of final assembly of a short firearm - ALFA steel revolver, Sport model, of ALFA - PROJ, Ltd. Czech company. Recherche introduction explains basic tooling (its history, tool material's development, milling and hole machining). Furthermore, it is submits an explanation to general arms division and analysis of barrel shroud technology suitability. The following technology process analysis describes the barrel shroud manufacturing process in the aforementioned company. Study's last part shows possible suggestions for manufacturing improvements and rationalizing measures.
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Using firearms in extraordinary situations
HLINOVSKÝ, Jakub
This Bachelor thesis is focused on incidents of firearms using. It points out at the necessity of preparedness of the Integrated Rescue System for active shooter attack with the using of firearms. Extremely insidious behavior of the offender is for the Integrated Rescue System very difficult and demanding. The main objective of this thesis is theoretically and empirically map the issue of incidents with using of firearms. Availability of literature on the issue was limited althought the subject is attractive to the media. The theoretical part is defined the theoretical background and basic concepts incidents with the using of firearms. I also follow up illegal arming, acquisition, ownership, possession and carrying of weapons or ammunition. I was defining the conditions for obtaining a gun license and permission to use guns. Next I attended to the legitimate using of firearms by the citizens and the Czech Police. I also point out specific incidents related to firearms in the Czech Republic and abroad. It illustrates the topicality of the theme. In the last part I describe the psychological characteristics of the active shooter. The practical part consists of empirical quantitative research. Its main objective was descriptively chart the trend of emergencies with the using of firearms in the Czech Republic. Police Presidium of the Czech Rep in the first phase of the negotiations agreed with the implementation of the research term within 10 years. Subsequently Police Presidium gave only detailed data for analysis in the timeframe of 3 years (i.e. 2012 2014). There are also formulated four research questions. For the method I opted - content analysis of the text twhich I realized in a quantitative way. By defining a core set of texts I have analyzed official documents official statistics of the Police Presidium of the Czech Rep, Department of Computer Science and Information Technology Operation, and documents internal regulations and guidelines of the Police of the Czech Rep. I worked with two files: the basic (ie. Total), and a sample. In my investigation I used a variaty of choice a deliberate choice. The basic set is the set of all 82 territorial departments of the Police of the Czech Republic. The selection included a total of two local unions: one from South Bohemia - Czech Budejovice and the other from Central Bohemia Pribram. Sample size influenced the number of variables interest. With regard to the size of the universe and the amount of collected data, I prefered the time of the expected 10 years to 3 years. Quantification sense units investigated their frequency, i.e. the absolute number (ni), the relative number (FI%) and diameter. Based on our investigation there were confirmed two research questions and two negative results. The survey confirmed the differences in the Framework, development trend, the nature and frequency of incidents with using a firearm in selected locations of Regional Department Pribram and Czech Budejovice. In Czech Budejovice, the number of attacks has increased, but in smaller numbers to the commission of using a firearm. In Pribram, on average, for more than half of the attacks is used a firearm. The survey confirmed the compliance framework dominating the category of the crime robbery, where there is more than half of all incidents at that reason. In the using of type of weapon by the perpetrator, it was found that the most commonly used short firearms are pistols and revolvers. Finally, I summarize my whole work, evaluate results and recommend some solutions and methods of preparation and I also explain why it is important to address this issue and to prepare citizens and members of the basic components of the IRS to prevent incidents and solutions. Good preparedness can help professionals to overcome these situations both in personal as well as professional life. Prevention and preparedness are fundamental to successful fighting such serious situations.
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Dynamic Analysis of Selected Firing Mechanisms of Firearms
Mešina, Matej ; Hadaš, Zdeněk (referee) ; Slažanský, Martin (advisor)
This bachelor thesis strives to evaluate the dynamic analysis of firing mechanisms of different types of firearms. In the present research is analyzed the matter of firearms and ammunitions, followed by the description of distribution of firearm mechanisms, as well as the detailed scrutiny of the initiation mechanism. The thesis also marginally explores the testing of primers. The last part of the research documents the possible solutions for the analyzed issues. The practical part of the thesis is devoted to the geometry of firing mechanisms, followed by the description of the physical principles, which are relevant to this matter. Based on the analysis, a theoretical calculation of the initiation energies for all of the analyzed types of firearms is established. Lastly, the calculation of the initiation energy is calculated, and the security in secure firing of the bullet's primer is determined.
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The influence of legally owned firearms on crime in the Czech Republic.
Převrátil, David ; Stroukal, Dominik (advisor) ; Brožová, Dagmar (referee)
The work aims to analyze the influence of the number of legally owned firearms on crime in the Czech Republic. The main hypothesis is chosen on the basis of previous empirical research from the United States. The work assumes that the effect of the number of legally owned firearms held by civilians has a negative impact on the overall crime rate in the Czech Republic. The hypothesis is tested by using the metodology of regression analysis of time series for the whole country between the years 2003 - 2013 and regression analysis of panel data for 14 regions in the Czech Republic between the years 2009 - 2013. Based on the obtained data six models observing the effect of the number of firearms and the number of firearm license owners to overall crime, murder and burglary and theft. The result is the finding of a positive impact on the number of legal guns in overall crime in the country. Unfortunately, the observed variable of legally owned firearms is statistically insignificant in all models. The work opens up new possibilities for further study of the influence of firearms on crime in the Czech Republic.
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Analysis of suicidal behavior manifested by firearm usage in the Czech Republic in the period of 2004 to 2008 regarding selected demographic characteristics.
BAMBAS, Vladislav
Bachelor thesis deals with the issue of successfully committed suicides by firearm usage in the period of 2004 to 2008. The first part summarizes the current knowledge, introduces the definition of suicide, a brief history of suicide, motivation and ways of suicide commitment. Details on suicides committed by shooting themselves are mentioned. The second part is devoted to the research that was carried out, deals with analyzing the current state of successfully committed suicides by shooting themselves. The aim was to determine whether there is an increase in suicide rate committed by shooting themselves. In the period of 2004 to 2008 suicidal behavior analysis was carried out according to the age, sex, motives for suicide, belonging to a social group, education and the type of gun ownership. The aim was to verify if the police suicide registration is sufficient in relation to the reasons for its introduction. To meet the research goals the secondary data analysis was used, the baseline data were obtained from internal databases of the Police of the Czech Republic. Data analysis revealed that the increase in the rate of suicide by firearm usage was not recorded, more men than women commit suicide by shooting themselves and in most cases legally possessed firearms are used to suicide commitment. Firearm suicides are committed more likely by adults and the elderly, minimally by adolescents. In the largest group of self-murderers the motif was not identified, the most frequent motif identified is a physical illness. The most vulnerable social group are the unemployed, and most suicides are committed by people with secondary education. The police suicide statistics is used by the prevention department of the Ministry of the Interior of the Czech Republic for analytical, statistical and inspection activities, the tracked markers are sufficient.
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