A thermal-expansion-type microactuator with paraffin as the expansive material (basic performance of a prototype linear actuator)

被引：35

作者：

Kabei, N

Kosuda, M

Kagamibuchi, H

Tashiro, R

Mizuno, H

Ueda, Y

Tsuchiya, K

机构：

[1] Saitama Ohara Cardiovasc Ctr, Res Inst, Osato, Saitama 36001, Japan

[2] Waseda Univ, Dept Mech Engn, Shinjuku Ku, Tokyo 169, Japan

[3] Olympus Opt Co Ltd, Prod Dev Dept, Tokyo 192, Japan

来源：

JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING | 1997年 / 40卷 / 04期

关键词：

actuator; micromachine; thermomotor; endoscope; paraffin;

D O I：

10.1299/jsmec.40.736

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Our aim is to develop a microactuator for use in endoscopic-surgery. The purpose of this study was to construct cylinder-piston-type microactuators actuated by thermal expansion of paraffin, We use paraffin as the material for expansion because paraffin has a large coefficient of expansion in the temperature range of 35 to 45 degrees centigrade, For smooth actuation of the piston, we must prevent the paraffin from sticking to the inside surface of the cylinder. Thus, the paraffin is enclosed in a silastic tube, The cavity between the cylinder and the tube is filled with silicone oil for lubrication and prevention of expansion loss, The outer diameter of the actuator is 2.5 mm and its length is 130 mm. The actuator can generate a stroke of 8 mm against a load of 1 kg.

引用

页码：736 / 742

页数：7