Manufacturing of the surfaces of spline fitting connection
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ORIGINAL ARTICLE
Manufacturing of the surfaces of spline fitting connection Sándor Bodzás 1 Received: 27 May 2020 / Accepted: 28 September 2020 / Published online: 6 October 2020 # The Author(s) 2020
Abstract The aim of this publication is the analysis of the geometric establishment and the manufacturing designing and development of spline fitting promoting the engineer’s designing works. There are many connection possibilities according to the utilization on different constructions. Based on them, different technologies are needed for the manufacturing of the spline shaft and the spline hole. Generally, milling and grinding technologies are needed. These technologies will be analysed. We design mathematical models for the analysis of the milling technologies by mathematical way. We define the technological parameters and the computed machine time for the manufacturing designing process and recommend technologies for the different shapes. Keywords Spline fitting . Milling . Grinding . Spline hole . Spline shaft
1 Introduction The application of key joints does not give solution in case of high-loaded parts and moment transmission. Firstly, the engineers try to use two keys by 180° arrangement to solve the load and moment problem. If it is not successful, the application of spline fitting is needed. The spline shaft is connected to the spline hole which has grooves. They are element pair together [1–3]. There are many splines around the perimeter of the shaft with which the high load could be distributed equally (Fig. 1) on the connecting surfaces. The number of splines around the shaft perimeter could be z = 3, 4, 6, and 8. Three types of the spline fitting are standardized [1]: & & &
Square spline fitting Triangular spline fitting Involute spline joint
If we have to provide axial motion for a toothed gear on a shaft, the solution of spline fitting could be applicable (Fig. 2)
* Sándor Bodzás [email protected] 1
Department of Mechanical Engineering, University of Debrecen, Ótemető str. 2-4., Debrecen 4031, Hungary
(https://tudasbazis.sulinet.hu/hu/szakkepzes/gepeszet/ gepeszeti-szakismeretek-1/a-bordastengely-kotes/ bordastengely-kotesek-kulonbozo-tipusai). In case of the geometric designing, the side surfaces have to be designed for surface pressure (Fig. 3) [3]: p¼
F per M ¼ ≤ pallowed A Ψ i rk a l z Ψ i
ð1Þ
The position accuracy and quality of spline fitting are determined by [1]: & & & &
The concentricity and size accuracy of the centralized diameters The side sizes of the spline width, division accuracy and the parallelism of the side surfaces in comparison with the centre line The surface roughness and hardness The accuracies of the fits
The geometric sizes and tolerances of the shaft and the hole are standardized (DIN 5463, DIN 5480). This work can help for the manufacturing engineers and the technologist for the manufacturing designing of spline fittings. These are the main conventional manufacturing methods that will be analysed. These technologies could be applicable on conve
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