Study behaviour of ratchet mechanism manufactured with 3D printing technology. Issue 1 (1st March 2022)

• Record Type: Journal Article
• Authors: Rizescu, C I; Baciu, D E; Rizescu, D
• Is Part Of: IOP conference series. Volume 1235:Issue 1(2022)
• Publication Date: 2022-03-01
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/1235/1/012001
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: In the present paper, there was developed research for the behavior of ratchet mechanism and ratchet wheel considering several materials and technologies. A ratchet wheel and pawl allow rotation of the shaft in only one direction. Considering 3D printing technologies, the paper approaches the designing and machining of a classic ratchet mechanism, generally well known, but there were highlighted some special particularities. That is known that the ratchet mechanisms are used mainly to low-speed applications, as well as in those applications where noise and vibration are of low importance. Using materials like PLA (Polylactic Acid) or ABS (Acrylonitrile Butadiene Styrene) for example, noise and vibrations can be considerably reduced. Another advantage is that the entire mechanism has lightweight. In this work, there were considered different infill percentages, 20% and 30%, for the 3D printed parts. The designed experimental setup allows rapid changing of the mechanical elements. There were developed several mechanisms, considering different numbers of teeth for the ratchet wheel and two materials. This paper aims the study of the behavior of machine elements obtained as 3D Printed parts like gears, bellows, bushes, sliders, brakes, diaphragms, leaf, and helical springs, bearings, clutches, etc., presented by authors in the previous papers.