Symmetric Beauty: Three-steps Force Amplified Clamping Device Based on Lever-Toggle Mechanism Driven by Pneumatic Muscle

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1 06 Internationa Conference on Computer, Mechatronics and Eectronic Engineering (CMEE 06) ISBN: Symmetric Beauty: Three-steps orce Ampified Camping Device Based on ever-togge Mechanism Driven by Pneumatic Musce Pei-iang QIN, Yang WANG, Kang-min ZHONG and Ming-di WANG Department of Information and Mechanica Engineering, Suzhou Poytechnic Institute of Agricuture, Suzhou, Jiangsu Province, China Schoo of Mechanica and Eectronic Engineering, Soochow University Suzhou, Jiangsu Province, China Keywords: Pneumatic musce, ever, Togge mechanism, Camping device. Abstract. Compared with the traditiona rigid pneumatic cyinder, the pneumatic musce has many outstanding advantages such as big initia tension, smooth movement, no reative motion component, ightweight. However, it can ony provide the tension, can not provide the thrust force; it is a oneorientation output force component. In this paper, use pneumatic musce as drive component, combined with ever-togge mechanism, a new type of three-steps force ampified camping device has been innovated. The working principe of the camping device is anayzed. Some corresponding mechanics cacuating formuas of output force are provided in this paper too. This device has a good effect of force ampifying and no contamination poution; it is a green-oriented camping device. Introduction Pneumatic musce is new type drive component invention in recent year, it imitate musce motion, consists of contraction system and the corresponding fittings, contraction system compose of the pressure sea rubber hose, a high strength fiber outside. ber as a three dimensiona network structure, the diamond weaving. Hose wi expands outward, tendons ongitudina contraction produce tensie and contraction movement when the compressed air into it, the tension with the trip is function reation, the pneumatic musce provide the tension maximum at beginning, and then precipitous decine. The highest rated ength contraction achieve 5% of effective working scope. Compared with the traditiona rigid pneumatic cyinder, the pneumatic musce has many outstanding advantages such as: initia force and high acceeration, can most provide 0 times initia force to the same diameter traditiona rigid pneumatic cyinder, high dynamic response, even in high oad, without moving mechanica components are touching each other, super sow moving, absoutey no jitter, isoation working medium and atmosphere, suitabe for dust and dirt environment, structure strong[]. Working Principe Based on scientific aesthetic symmetry concept [,3], the working principe of three-steps force ampified camping device based on ever togge mechanism driven by pneumatic musce iustrated in g., the camping device compose of pneumatic musces, eterna ever force ampifier, togge mechanism and power output device. the pneumatic musce provide the tension when the compressed air into it, the tension was ampify the first time through togge mechanism by Soft cabe, and then was ampify the second time through eterna ever force ampifier, at ast the tension was ampify the third time through togge mechanism, and the output pressure o by the pressure head, In order to compaction workpiece, the pneumatic musce reaxation back to the state when compressed

2 air is removed, at the same time the pressure head restored to its origina state under the action of reposition spring (not shown in g. ). Using constant increase force ever, which generay repace institutions under the condition of no change size output force ampifying the effect is more significant. It can reduce the camping device s voume of the whoe system, by increasing the force through the hinge rod and the ever, when the pneumatic musce size certain. gure. Three-steps force ampified camping device based on ever togge mechanism driven by pneumatic musce. Mechanica Cacuation The output power of camping device iustrated in gure, the formua of o is: o M tan( ) tan( ) () Here i the tension of the arge-diameter pneumatic musce, theory of pressure ange of togge mechanism (iustrated in g.) M the mechanica efficiency of institutions Equivaent friction ange of the togge = arcsin rf active arm ength of permanent force increasing ever passive arm ength of permanent force increasing ever where the center distance of two hinge / mm; r the radius of the hinge axis / mm; f friction factor of hinge; [4] Performance Anaysis and Appication Hypothesis i p 4, 6, is the increase force coefficient. 0, 0. 5, its generation into type (),

i p tan ( 0.5) 0 () The reations between i p and edited and operation by MATAB shown in gure. gure. Dependence of theoretica mechanica advantage on theoretica pressure anges.

3 i p tan ( 0.5) 0 () The reations between i p and edited and operation by MATAB shown in gure. gure. Dependence of theoretica mechanica advantage on theoretica pressure anges. Choose pneumatic musce of the type MA S0[, 5 ], the tension of the pneumatic musce i = 00 N, = 5, =40, =0, = 5, =0.95, respectivey generation into type (), cacuated camping device output camping forces o 470N, assumptions for the cyinder pressure 0. 4M Pa, the diameter of cyinder wi be 684mm to get the same pressure o, but the diameter of the type MA S0 ony 43 mm, ony /5 of cyinder diameter, the increase force coefficient of this camping device reach, it can not ony reduce the device voume but aso satisfy the compaction force the requirement greaty. We can use the structure shown in gure 3 which can satisfy the actua production of encounter a arger size of workpiece, its working principe and output compaction force cacuation formua the same as gure, in this no onger repeat. gure 3. Three-steps force ampified camping device based on ever togge mechanism driven by pneumatic musce (two).

Based on the idea of reconfigurabe, we aso can use the structure shown in gures 4-6 which can

compaction force cacuation formua the same as gure, do not repeat. gure 4.

musce(three). gure 5. musce(four). gure 6. musce (five).

4 Based on the idea of reconfigurabe, we aso can use the structure shown in gures 4-6 which can satisfy the actua production of the space size restrictions, its working principe and output compaction force cacuation formua the same as gure, do not repeat. gure 4. Three-steps force ampified camping device based on ever togge mechanism driven by pneumatic musce(three). gure 5. Three-steps force ampified camping device based on ever togge mechanism driven by pneumatic musce(four). gure 6. Three-steps force ampified camping device based on ever togge mechanism driven by pneumatic musce (five).

5 Concusion Using pneumatic musce as driving eement, combined with ever-togge mechanism, a kinds of camping device be innovated, which can meet the requirements of different structure and size pressure. Such camping device, simpe structure, high efficiency, force-magnifying effect is remarkabe, the camping device introduced in this paper just one of them. Hope that we can cause pubic concern peers for the pubication of this artice, pay attention to pneumatic musce of research and appication, thus makes its in engineering appication range of more extensive. References [] Wang Xiongyao, 00, Introduction to A New Product-Musce Actuator Sinae (MAS), China, Hydrauics Pneumatics & Seas. [] Jim Bagoba. Write, itao, Cao Zhiiang transation, 999, Perfect symmetry-fuerenes unexpected discovery, Shanghai science and technoogy education press, Shanghai. [3] Anthony Zee (USA) Write, Xunkun, ao Yujun transation, 00, earfu symmetry-beauty exporation of the modern physic, Hunan science and technoogy pubishing press, Changsha. [4] in Wenhuan, Chen Bentong, 987, The machine too's fixture design, China, Defense industry press. [5] iang Jinsheng, Cao Jujiang, 004, The Cam Mechanica Drive Device for ifting and Transposition Manipuator, ight Industry Machinery.

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