DEVELOPMENT OF KNOWLEDGE BASE FOR DESIGNING LINKAGE-TYPE DWELL MECHANISMS: PART 1 - THEORY.

Sridhar Kota, Arthur G. Erdman, Donald R. Riley

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Linkage-type mechanisms have certain advantages over cams for dwell applications. The design of a typical six-link dwell mechanism involves adding an output dyad to the basic four-bar mechanism that generates either a circular arc or a straight line portion of the coupler curve. The entire motion characteristics of these four-bar mechanisms should be considered in order to design a suitable dwell linkage. Part 1 of this paper is devoted to the study of four-bar linkages which generate straight line, circular arc and symmetrical curves. Part 2 discusses how the design experience gained in this study can be applied to develop an expert system for designing linkagetype dwell mechanisms. Using path curvature theory and design charts developed by Tesar, et al., hundreds of four-bar straight-line mechanisms are systematically investigated. Based on the typical shapes of coupler curves these mechanisms are then classified. A synthesis technique has been developed to design four-bar mechanisms for circular arc generation. Symmetrical coupler curves with straight-line or circulararc segments, which are required for designing double-dwell mechanisms, are studied. This paper is part of the research that is underway to develop an "expert system" for designing mechanisms to generate straight lines, circular arcs, symmetrical curves, parallel motion and dwell.

Original languageEnglish (US)
Pages (from-to)308-315
Number of pages8
JournalJournal of Mechanisms, Transmissions, and Automation in Design
Volume109
Issue number3
DOIs
StatePublished - Sep 1 1987

Fingerprint

Dive into the research topics of 'DEVELOPMENT OF KNOWLEDGE BASE FOR DESIGNING LINKAGE-TYPE DWELL MECHANISMS: PART 1 - THEORY.'. Together they form a unique fingerprint.

Cite this