Obrabotka Metallov 2019 Vol. 21 No. 4

OBRABOTKAMETALLOV Vol. 21 No. 4 2019 56 EQUIPMENT. INSTRUMENTS References 1. Faxin L., Xianzhang F. The design of parallel combination for cam mechanism. Procedia Environmental Sciences , 2011, vol. 10, pt. B, pp. 1343–1349. DOI: 10.1016/j.proenv.2011.09.215. 2. Sateesh N., Rao C.S.P., Janardhan Reddy T.A. Optimisation of cam-follower motion using B-splines. International Journal of Computer Integrated Manufacturing , 2009, vol. 22, iss. 6, pp. 515–523. DOI: 10.1080/ 09511920802546814. Synthesis of the Motion Law of Filling Threads Beat-up Mechanisms of the STB Loom with Cam Driven Yuriy Podgornyj 1, 2, а, * , Alexander Kirillov 1, 3, b , Vladimir Ivancivsky 1, c , Dmitry Lobanov 4, d , Olga Maksimchuk 2, e 1 Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian Federation 2 Novosibirsk Technological Institute (branch) Moscow State University of Design and Technology, 35 Krasny prospect (5 Potaninskayast.), Novosibirsk, 630099, Russian Federation 3 Novosibirsk State Pedagogical University, 28 Viluiskayast., Novosibirsk, 630126, Russian Federation 4 I. N. Ulianov Chuvash State University, 15 Moskovsky Prospekt, Cheboksary, 428015, Russian Federation a https://orcid.org/0000-0002-1664-5351, pjui@mail.ru , b https://orcid.org/0000-0002-8142-2787, kirillovalvs@mail.ru, c https://orcid.org/0000-0001-9244-225X , ivancivskij@corp.nstu.ru , d https://orcid.org/0000-0002-4273-5107, lobanovdv@list.ru , e http://orcid.org/0000-0001-6976-1164 , ovmak@mail.ru Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2019 vol. 21 no. 4 pp. 47–58 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2019-21.4-47-58 Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov ARTICLE INFO Article history : Received: 25 May 2019 Revised: 12 September 2019 Accepted: 15 November 2019 Available online: 15 December 2019 Keywords : Cam mechanism Synthesis of motion law Technological machine Automatic machine Cyclogram Cam profile Funding This study was supported by a NSTU grant (project No. TP-PTM-1_19). ABSTRACT Introduction. The paper considers the design of the filling threads beat-up mechanism for the STB type loom. The analysis of scientific literature in the field indicates that the wide range of fabrics production at high speeds requires providing the initial period of the mechanism movement with an additional area on the cam profile which allows reducing the impact load at the time of clearance adjustment in the pair of cam-roller. In this case, the designer needs to synthesize an acceleration law which should be task-specific and provide for a certain production step. This study is relevant since the existing synthesis methods of the filling threads beat-up mechanism fail in providing the basis for modernization of the mechanisms whose work depends on the main one (beat-up mechanism). The performance of such mechanisms can be increased only after significant changes in their cycle charts. Objective: synthesis of the new motion law of the filling threads beat-up mechanism (slay mechanism), allowing to reduce the load on the follower in the initial period of its movement. The paperinvestigates the motion law of the beat- up mechanism with an additional section of the cam profile which allows imparting additional movement to the follower at the moment of its initial movement. Research Method: designing the slay mechanism drive with form-fit cams using software packages application. Results and discussion. The conducted research allowed proposing the method of motion law synthesis for slay mechanism. We suggest introducing an additional section at the cam profile. The laws of displacement change are obtained by integrating the acceleration curve. Theoretical studies are brought to numerical values of the slay mechanism’s follower accelerations and displacements. For citation: Podgornyj Yu.I., Kirillov A.V., Ivancivsky V.V., Lobanov D.V., Maksimchuk О.V. Synthesis of the motion law of filling threads beat-up mechanisms of the STB loom with cam driven. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science , 2019, vol. 21, no. 4, pp. 47–58. DOI: 10.17212/1994-6309-2019-21.4-47-58. (In Russian). ______ * Corresponding author Podgornyj Yuriy I ., D.Sc. (Engineering), Professor Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian Federation Tel: +7 (383) 346-17-79, e-mail: pjui@mail.ru