Abstract
Due to the presence of nonlinear springback deformation, when the aviation piston hydraulic pump which is usually called sliding-shoe is formed by cold extrusion method, the surface of the sliding-shoe’s ball-socket becomes non-analytic curved surface. And this brings many difficulties to the measurement. In this paper, the precision measurement and fitting method to the inferior concave spherical surface of the sliding-shoe is discussed. And according to the deformation characteristics of the sliding-shoe, a meridian measurement method is established for the measurement. To a large number of discrete data, we fit it by least squares method and calculate it by VC++ Language program. Then we get the ball-socket’s center and radius. And fitting the sliding-shoe’s ball-socket to find out the contour error. It provides a reliable basis for the inspection of sliding-shoe.
Publisher
Trans Tech Publications, Ltd.
Reference4 articles.
1. J.X. Li and Y.L. Ke: Chinese Jouranl of Mechanical Engineering, Vol. 36 (2000) No. 5, pp.18-22. (In Chinese).
2. H.B. Huang W.G. Zheng S.L. Teng and S.S. Han: Forging & Stamping Technology, Vol. 37 (2012) No. 1, pp.88-91. (In Chinese).
3. G. Chen Z.L. Ren and H.Z. Sun: Ordnance Industry Automation, Vol. 24 (2005) No. 3, pp.107-108. (In Chinese).
4. J.Y. Zheng: Object-Oriented Programming Introduction and Application of C++ (China Railway Publishing House, China 2002).