| Subject name (in Hungarian, in English) | Machine ekements2. | |||
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Machine Elements 2.
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| Neptun code | BMEGEGIBGG2 | |||
| Type | study unit with contact hours | |||
| Course types and number of hours (weekly / semester) | course type: | lecture (theory) | exercise | laboratory excercise |
| number of hours (weekly): | 3 | 1 | 1 | |
| nature (connected / stand-alone): | - | coupled | coupled | |
| Type of assessments (quality evaluation) | exam | |||
| ECTS | 6 | |||
| Subject coordinator | name: | Dr. Kerényi György Zsolt | ||
| post: | associate professor | |||
| contact: | kerenyi.gyorgy@edu.bme.hu | |||
| Host organization | Department of Machine and Product Design | |||
| http://www.gt3.bme.hu | ||||
| Course homepage | http://www.gt3.bme.hu/bgg2 | |||
| Course language | hungarian, english, german | |||
| Primary curriculum type | mandatory | |||
| Direct prerequisites | Strong prerequisite | none | ||
| Weak prerequisite | BMEGEGIBGG1 | |||
| Parallel prerequisite | ||||
| Milestone prerequisite | at least obtained 0 ECTS | |||
| Excluding condition | BMEGEGEAGG2 | |||
Aim
Building on Machine Elements 1, to acquaint students with the principles and methods of machine construction and their basic tasks. To prepare for solving simpler construction tasks independently: to create structural models, to identify possible causes of failure, to estimate stress and limit states, to perform dimensioning and/or verification procedure, especially concerning sliding and rolling bearings in machines, typical types of mechanical drives, for gear, worm, belt, chain and friction drives.
Learning outcomes
Competences that can be acquired by completing the course
Knowledge
Knows the most important properties of mechanical drives. Provides an overview of the commonly used concept of mechanical drive elements. Knows the main features and operating principle of different sliding and roller bearings. Aware of the typical failure modes of sliding and roller bearings, their causes and the countermeasures required to avoid them. Knows the types and types of couplings, their characteristics, and their main mechanical and constructional features. The student knows the design of simpler gears as well as worm gears. Possesses the knowledge required for the geometrical and basic strength sizing of gear drives and worm-worm gear drive pairs. Understands the basic laws of tooth connection, speed and slip conditions. Distinguishes between the typical modes of failure of gears, their causes and the countermeasures required to avoid them. Aware of traction drives, their main characteristics, their geometrical and basic strength dimensioning principles. Informed about high power density drives and their applicability.
Ability
Able to perform geometric and basic strength dimensioning of simpler sliding and rolling bearings. Able to determine the service life of rolling bearings, select the required lubricant, choose a suitable bearing for a simpler construction. Designs the arrangement of a simple rolling bearing rotor. Selects the required clutches for a particular design. Defines the geometrical characteristics of gear drive pairs, worm gear drives. Determines the load on the gear drive pairs, the worm gear drive pairs. Able to create a surrogate mechanical model for sizing a gear drive pair. Solves the geometrical and basic strength sizing of simple traction drive drives based on a catalogue Selects the appropriate traction drive unit for a mechanical drive system based on a catalogue. Identifies the structural units of mechanical systems, the structure and operation of their elements, the design and relationship of the applied systems. Apply calculation and modelling principles and methods of mechanical design.
Attitude
Open to learning with his/her instructor and fellow students. Expands his/her knowledge by continuously acquiring knowledge in the course of his/her work Strives to learn and use the necessary standards when solving tasks. Strives for an accurate and error-free clear solution. Open to learning and using advanced computer systems.
Independence and responsibility
Independently thinks through structural design tasks and problems of simple mechanical drive elements. Accepts well-founded professional and other critical remarks. Considering as many aspects as possible, it performs its task with a systematic and complex approach. With his/her knowledge, he makes a responsible, informed decision based on his/her analysis. Does his/her job with the responsibility of a (prospective) engineer conscientiously.
Teaching methodology
There is a three-hour lecture per week to transfer theoretical knowledge. Here, the technical knowledge and knowledge competencies required for the mid-year performance appraisal and exam are presented. Classroom exercises are used to practice the lecture's curriculum and consult on the planning task. The laboratory sessions are used to present basic machine structural elements.
Support materials
Textbook
1. Szendrő Péter (szerk.): Gépelemek, Mezőgazdasági Kiadó, 2007. ISBN 9789632866451
2. Dr. Zsáry Árpád: Gépelemek I. Nemzedékek Tudása Tankönyvkiadó, Budapest, 2003. ISBN 97896319458509789631945850
3. Dr. Zsáry Árpád: Gépelemek II. Nemzeti Tankönyvkiadó, Budapest, 2000. ISBN 9631911667
Lecture notes
1. Simon - Kozma - Molnár - Karsai - Nguyen - Király: Gépelemek 2., Műegyetemi K., 2008. (45084)
3. Máté L.: Gépelemek 2 példatár., BME Printer Nonprofit Kft., 2012 (45092)
2. Tóth S., Molnár L., Bisztray S., Marosfalvi J.: Gépelemek 1., Műegyetemi K., 2007. (45080)
Online material
https://regi.tankonyvtar.hu/hu/tartalom/tamop425/2011_0001_521_Gepelemek/adatok.html
Validity of the course description
| Start of validity: | 2024. January 15. |
| End of validity: | 2028. July 15. |
General rules
Learning outcomes are assessed through a mid-year written performance measurement (summary study performance assessment) and a mid-year construction planning task during the diligent period. These partial performance evaluations prove the practical application of knowledge and competence. It is based on written performance measurement to be completed during the examination period (summary study performance assessment, exam) and active participation in the internships (partial performance assessments).
Assessment methods
Detailed description of mid-term assessments
| Mid-term assessment No. 1 | ||
| Type: | formative assessment, project-based, complex | |
| Number: | 1 | |
| Purpose, description: | A complex, written way of evaluating the subject and knowledge, ability-type competence elements in the form of a dissertation. The dissertation focuses on the theoretical knowledge acquired during the lessons and their application, thus focusing on problem recognition and solution solving. Where appropriate, practical (calculation and design) tasks must also be solved during the performance evaluation. The part of the curriculum on which the assessment is based is determined by the lecturer of the subject in agreement with the person in charge of the subject. The available working time is 60 minutes. | |
| Mid-term assessment No. 2 | ||
| Type: | formative assessment, simple | |
| Number: | 1 | |
| Purpose, description: | It is a complex way of evaluating the knowledge, ability, attitude, and independence and responsibility type competence elements of the subject, the form of which is the individually designed construction planning task. The content, requirements, submission deadline and assessment method of the planning task are determined by the person in charge of the course in agreement with the supervisor. The task is 25 points, 25% included in the exam mark. | |
Detailed description of assessments performed during the examination period
Elements of the exam:
| Written partial exam | ||
| Obligation: | mandatory (partial) exam unit, failing the unit results in fail (1) exam result | |
| Description: | The summary assessment consists of two written parts, each of which must reach the required minimum level separately, as follows: • elaboration of minimum questions: at least 5 out of 6 questions must be answered completely correctly. Criterion requirement. The time available is 10 minutes. • Elaboration of theoretical questions, numerical examples and a drawing question: At least 50% (30 points) of the total score (60 points) must be achieved. The time available is 120 minutes. If the student does not meet the required minimum level in even one of the parts, the grade obtained for the exam is insufficient. | |
| Oral partial exam | ||
| Obligation: | does not apply | |
| Description: | ||
| Practical partial exam | ||
| Obligation: | does not apply | |
| Description: | ||
| Inclusion of mid-term results | ||
| Obligation: | mandatory (partial) exam unit, failing the unit results in fail (1) exam result | |
| Description: | The semester planning tasks are included in the exam mark with a weight of 25% and the closed place with a weight of 15%. To obtain a signature, the design task and the enclosure must be completed at a level of at least 40%. In evaluating the design task, the quality of continuous progress, drawing and written documentation is evaluated. The design task: to compile the technical documentation, including the construction drawings and calculations performed within the framework of the individual work. | |
The weight of mid-term assessments in signing or in final grading
| ID | Proportion |
|---|---|
| Mid-term assessment No. 1 | 100 % |
| Mid-term assessment No. 2 | 100 % |
The condition for signing is that the score obtained in the mid-year assessments is at least 40%.
The weight of partial exams in grade
| Type: | Proportion |
|---|---|
| Written partial exam | 60 % |
| Inclusion of mid-term results | 40 % |
Determination of the grade
| Grade | ECTS | The grade expressed in percents |
|---|---|---|
| very good (5) | Excellent [A] | above 90 % |
| very good (5) | Very Good [B] | 85 % - 90 % |
| good (4) | Good [C] | 72 % - 85 % |
| satisfactory (3) | Satisfactory [D] | 59 % - 72 % |
| sufficient (2) | Pass [E] | 46 % - 59 % |
| insufficient (1) | Fail [F] | below 46 % |
The lower limit specified for each grade already belongs to that grade.
Attendance and participation requirements
The lack of the value means that there is no attendance requirement.
At least 70% the exercises (rounded down) must be actively attended.
At least 70% of laboratory practices (rounded down) must be actively attended.
Special rules for improving, retaken and replacement
The special rules for improving, retaken and replacement shall be interpreted and applied in conjunction with the general rules of the CoS (TVSZ).
| Can the submitted and accepted partial performance assessments be resubmitted until the end of the replacement period in order to achieve better results? | ||
| NO | ||
| Taking into account the previous result in case of improvement, retaken-improvement: | ||
| new result overrides previous result | ||
| The way of retaking or improving a partial assessment for the first time: | ||
| partial assesment(s) in this group cannot be improved or repeated, the final result is assessed in accordance with Code of Studied 122. § (6) | ||
| Completion of unfinished laboratory exercises: | ||
| missed laboratory practices may be performed in the repeat period, non-mandatory | ||
| Repetition of laboratory exercises that performed incorrectly (eg.: mistake in documentation) | ||
| incorrectly performed laboratory practice (e.g. Incomplete/incorrect report) can be corrected upon improved re-submission | ||
Study work required to complete the course
| Activity | hours / semester |
|---|---|
| participation in contact classes | 70 |
| mid-term preparation for practices | 7 |
| preparation for laboratory practices | 14 |
| elaboration of a partial assessment task | 34 |
| exam preparation | 42 |
| additional time required to complete the subject | 13 |
| altogether | 180 |
Validity of subject requirements
| Start of validity: | 2024. January 15. |
| End of validity: | 2028. July 15. |
Primary course
The primary (main) course of the subject in which it is advertised and to which the competencies are related:
Mechanical engineering
Link to the purpose and (special) compensations of the Regulation KKK
This course aims to improve the following competencies defined in the Regulation KKK:
Knowledge
- Student has the knowledge of the theories and contexts of fundamental importance in the field of engineering and of the terminology which underpins them.
Ability
- Student has the ability to apply the theories and related terminology in an innovative way when solving problems in a given field of engineering.
Attitude
- Student strives to plan and carry out tasks to a high professional standard, either independently or in a team.
Independence and responsibility
- Student has the ability to work independently on engineering tasks.
Prerequisites for completing the course
|
Knowledge type competencies
(a set of prior knowledge, the existence of which is not obligatory, but greatly facilitates the successful completion of the subject) |
none |
|
Ability type competencies
(a set of prior abilities and skills, the existence of which is not obligatory, but greatly contributes to the successful completion of the subject) |
none |