Development of the Two-Dimensional General Mechanical CAD System

2013 ◽  
Vol 694-697 ◽  
pp. 3168-3171
Author(s):  
Yong Jun Feng
Keyword(s):  
Mechanical Structure ◽  
Standard Data ◽  
Cad System ◽  
Function Points ◽  
System A ◽  
Programme Development ◽  
The Common ◽  
Set Up ◽  
2D Drawing ◽  
Auto Cad

Although the function of Auto CAD is powerful, its professional pertinence is weak, and partuicularly it cannot satisfy the requirement for the efficient drawing and annotation of the common mechanical structure. The author of this paper has a discussion on the development principle and methods of a 2D General Mechanical CAD System (MACD). Faced up with all the requirements of the mechanical designing 2D drawing, and on the basis of the overall extracting the special features of the mechanical structure 2D primitives, the designing habits and the designing standards and specifications, all the function points of the system have been set up through the intersection and integration of the Auto CAD working mode and the functions of the system. A mechanical CAD system with a general drawing fucntion has been complished with a comprehensive use of the tools of the Auto CAD like function expansion, menu customization and programme development. Applied practice shows that this system has satisfied all the requirements for the mechanical desginers to make the drawings, annotations, enquiry for the standard data, the structure enquiry and quotations so that the designing efficiency has been greatly increased.

CATI: A Computer Aided Tolerancing Interface

1992 ◽  
Author(s):  
Rikard Söderberg
Keyword(s):  
Normal Distribution ◽  
Tolerance Analysis ◽  
Distribution Model ◽  
Preliminary Design ◽  
Tolerance Limits ◽  
Cad System ◽  
System A ◽  
Computer Aided ◽  
2D Drawing ◽  
Normal Distribution Model

Abstract This work presents an interface for tolerance analysis in a CAD system. A method for picking up necessary information from a 2D drawing is developed and implemented as an interface in a commercial CAD system. The interface communicates with an external calculation program which determines unknown tolerance limits using the normal distribution model. Results from the calculation program is in the end used by the interface to present measures with tolerances on the drawing. The advantage of using CATI in preliminary design is discussed, and a strategy for treating interrelated tolerance chains is presented.

Self-Synchronization in a Class of Motor Driven Reciprocating Mechanisms

2019 ◽  
Author(s):  
Anubhab Sinha ◽  
Saurabh Kumar Bharti ◽  
Arun Kumar Samantaray ◽  
Ranjan Bhattacharyya
Keyword(s):  
Numerical Study ◽  
Connecting Rod ◽  
System A ◽  
Driving Speed ◽  
The Common ◽  
Set Up ◽  
The Individual ◽  
Multi Body ◽  
Base Structure ◽  
Do So

Abstract The phenomena of ‘self-synchronization’ is investigated in Reciprocating Mechanisms, namely — crank slider mechanisms. A typical crank-slider mechanism comprises a rotating crank, a sliding piston and a connecting rod in between them. A series of such mechanisms are installed inside a common vibrating base structure. Each of these mechanisms are independently powered by a DC motor. So, for ‘n’ number of mechanisms, there are also ‘n’ number of motors driving them. The assembly is then set up an SDoF vibrating system. A multi-body simulation model is developed on MSC Adams. The numerical study shows that even with different voltage inputs for each motor, the individual mechanisms ‘self-synchronize’ by attaining a single common driving speed. The synchronization is self-induced due to energy interactions between the non-ideal drives and the common vibrating base. Moreover, the tendency to synchronize is so strong that once synchronized, the mechanisms continue to do so even when one or more motors are switched off. The study demonstrates how synchronization can assist in driving multiple mechanisms simultaneously, possibly with minimal power requirements as well as reduced vibrations.

Isolation and characterization of oleochemical compounds from watermelon seed

2020 ◽  
Vol 10 (4) ◽  
pp. 79-82
Author(s):  
Madhubhushan M ◽  
Seshaiah S ◽  
Chandrudu J ◽  
Sagar R ◽  
Akila CR
Keyword(s):  
Cutting Tool ◽  
Citrullus Lanatus ◽  
Fatty Esters ◽  
Mineral Oils ◽  
Light Yellow ◽  
Isolation And Characterization ◽  
The Common ◽  
Set Up ◽  
Natural Gradation

The common watermelon item (Citrullus lanatus) seeds were gained from castoffs verdant nourishments for use by decorating, sun ventilation and pulverizing. Light yellow-toned oil was gotten by dissolvable withdrawal using oil atmosphere and the going with traits were gotten using oil ether: pH, refractive rundown, thickness, dissolvable miscibility, coagulating temperature, fire nature, express gravity, streak point and warmth of consuming. With a shallow level of unsaturation, stepped level of smoothness, and proximity of raised degree of the sensible proportion of free unsaturated fats. The low assessment of the solidifying temperature of the oil offered a hint that the oil can be managed in various areas paying little heed to the qualification in temperature. The following level of linoleic destructive of the oil offers a hint of natural gradation of solidarity. Fatty esters are increasing expanding significance as a biodegradable swap for mineral oils. In some request regions, for example, cutting tool oil, gearbox, pressure-driven oils, and greases for raw petroleum creation, the oleochemical items are set up. Nonetheless, certain particular wellsprings of fatty esters are hitherto to be abused for this comparative reason. This exploration subsequently tests into one of the less used wellsprings of fatty esters in watermelon. The oil from the kernels demonstrations a top-notch yield presents significant utilitarian gatherings for change and thus was utilized to set up an assortment of oleochemicals which demonstrated excellence materials in contrast with the routinely utilized oils feed frameworks for oleochemicals after portrayal. The photopolymers acquired indicated piercing vinyl protons for consistent polymerize.

scholarly journals Adverse Selection, Heterogeneous Beliefs, and Evolutionary Learning

2021 ◽  
Author(s):  
Clemens Buchen ◽  
Alberto Palermo
Keyword(s):  
Adverse Selection ◽  
Relative Size ◽  
Nonlinear Dynamic System ◽  
Heterogeneous Beliefs ◽  
Evolutionary Learning ◽  
Common Assumption ◽  
Cobweb Model ◽  
The Common ◽  
Learning Set ◽  
Set Up

AbstractWe relax the common assumption of homogeneous beliefs in principal-agent relationships with adverse selection. Principals are competitors in the product market and write contracts also on the base of an expected aggregate. The model is a version of a cobweb model. In an evolutionary learning set-up, which is imitative, principals can have different beliefs about the distribution of agents’ types in the population. The resulting nonlinear dynamic system is studied. Convergence to a uniform belief depends on the relative size of the bias in beliefs.

The Creation of a Multi-Link Load Balancing Mechanism for Planetary Gearing: Part 2 — Optimum Mechanism Selection and Dimension Determination

1992 ◽  
Author(s):  
Zhang Hong ◽  
Wei-qing Cao ◽  
Ting Li Yang ◽  
Jin Kui Chu
Keyword(s):  
Load Balancing ◽  
Arbitrary Number ◽  
Uniform Load ◽  
Topological Structures ◽  
Optimum Load ◽  
New Type ◽  
The Common ◽  
The Creation ◽  
Set Up

Abstract This paper is the second of a series of two papers which designed a new type of load balancing mechanisms for planetary gearings with arbitrary number of planets. In this paper the common expression of the non-uniform load share factor was deduced, and a function parameter:force-arm factor and their solution was given. That makes it possible that the dimensions and the ability of load equilibrium of Multi-Link Load Balancing Mechanisms can be determined. The criteria of optimum load balancing Mechanisms selection were set up with consider of the effects of turning pair clearances, and optimum mechanisms were selected among the 15 candidates obtained in Part 1. Finally, it was demonstrated that the optimum multi-link load balancing mechanisms for arbitrary number of planets had the similar topological structures and same function and performence of load equilibrium.

CAFP: Computer-Aided Fixture Planning

1993 ◽  
Author(s):  
Jerry Y. Fuh ◽  
Chao-Hwa Chang ◽  
Michel A. Melkanoff ◽  
Hsin Rau
Keyword(s):  
Process Planning ◽  
Rational Approach ◽  
Machining Processes ◽  
Constraint Equations ◽  
Cad System ◽  
Manufacturing Process Planning ◽  
Modular Fixtures ◽  
Fixture Planning ◽  
Computer Aided ◽  
The Common

Abstract Fixture planning is an indispensable part of a manufacturing process planning routine. This paper introduces a rational approach to computer-aided fixture planning (CAFP). A method of fixture classification and selection is introduced for planning of modular fixtures. The location of each fixture component is determined according to the common fixturing principles. We has developed a prototype CAFP system and linked to a commercial CAD system, namely CADAM. Modular fixture elements are automatically selected by the system, and the generated fixture layout can be displayed on-screen after assembly. For verification and optimization of a fixturing scheme, a fixture analysis module is also developed. An iteration method is used to solve the fixturing constraint equations and to determine the adequate clamping forces for holding the workpiece during machining processes.

The Common Bond

2015 ◽  
pp. 19-29
Author(s):  
Anne Eyre ◽  
Pam Dix
Keyword(s):  
Support Groups ◽  
Legal Status ◽  
Common Bond ◽  
Action Group ◽  
Self Help ◽  
Group Members ◽  
The Common ◽  
Set Up ◽  
The Uk

This chapter discusses how those affected by a disaster often form an extraordinary common bond. Self-help support and action group members say that only with others from 'their' disaster can they open up completely, without fear of judgement, about the most difficult aspects of their experience. The examples in this chapter illustrate the kinds of support groups that grew out of those disasters of the 1980s, including the King's Cross Families Action Group, the Herald Families Association, the UK Families Flight 103, the Marchioness Action Group, the Stairway to Heaven Memorial Trust, and the MV Derbyshire Families Association. There are a number of different options for the structure of family and survivor groups in terms of membership, legal status, and management. Some groups have set up unincorporated associations, while a few have chosen to apply for charitable status. Ultimately, representatives from the groups of the 1980s, as well as individual survivors and bereaved people, went on to form, join, and develop Disaster Action.

15. Business Organizations

2019 ◽  
pp. 421-451
Author(s):  
Lucy Jones
Keyword(s):  
Limited Liability ◽  
Business Organizations ◽  
Limited Partnership ◽  
Legal Personality ◽  
Different Types ◽  
The Common ◽  
The Difference ◽  
Set Up ◽  
Limited Liability Partnership ◽  
The Relationship

This chapter discusses the common types of business organizations and explains the difference between unincorporated and incorporated businesses. The three types of partnership arrangements are considered, namely a general (ordinary) partnership, a limited partnership, and a limited liability partnership. The chapter includes discussion of the rules relating to partnerships under the Partnership Act 1890 and the Limited Liability Partnership Act 2000. It explains how different types of partnerships may be set up and looks at the relationship between partners and the relationship between partnerships and outsiders. It considers the dissolution of the different types of partnerships. The chapter concludes with a discussion of the different types of companies and the separate legal personality of companies.

15. Business Organisations

2017 ◽  
Author(s):  
Lucy Jones
Keyword(s):  
Limited Liability ◽  
Limited Partnership ◽  
Legal Personality ◽  
Different Types ◽  
The Common ◽  
The Difference ◽  
Set Up ◽  
Limited Liability Partnership ◽  
The Relationship

This chapter discusses the common types of business organisations and explains the difference between unincorporated and incorporated businesses. The three types of partnership arrangements are considered, namely a general (ordinary) partnership, a limited partnership, and a limited liability partnership. The chapter includes discussion of the rules relating to partnerships under the Partnership Act 1890 and the Limited Liability Partnership Act 2000. It explains how different types of partnerships may be set up and looks at the relationship between partners and the relationship between partnerships and outsiders. It considers the dissolution of the different types of partnerships. The chapter concludes with a discussion of the different types of companies and the separate legal personality of companies.

The Republic of Bees

2019 ◽  
pp. 77-126
Author(s):  
Lawrence M. Friedman
Keyword(s):  
Eighteenth Century ◽  
Common Law ◽  
The United States ◽  
State Constitutions ◽  
System A ◽  
The Social ◽  
American Law ◽  
The Common ◽  
The Republic ◽  
Law Of Evidence

This chapter details changes in American law from the eighteenth century onward, covering federal and state constitutions, judges, organization of courts, and civil procedure, and the law of evidence. The colonies declared themselves independent in 1776. However, American law continued to borrow from English law. English doctrines that were needed and appropriate were welcome. Between 1776, and the middle of the nineteenth century, there developed a true republic of bees; their flowers were the social and economic institutions that grew up in the United States. American conditions and ideas were the lawmakers that made American law a distinctive system: a separate language within the common-law family.

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