Formation between barrel connections

Abstract

The article is devoted to the coverage of issues related to the manufacture of handrail joints (fittings) from wood. Attention is focused on the fact that the process of mechanical processing (cutting) of both handrails and fittings is complex, takes place in different vertical planes and is accompanied by errors depending on the type of cutting. Conducted research while cutting the fitting and handrails by hand with a hacksaw and with the help of a miter saw showed that errors during the connection (gluing) of the fitting with the handrails exist and they differ depending on the cutting method. The purpose of the work is to develop a method and a device for making precise cuts in different vertical planes during the formation of inter-floor handrail joints. Methods of fitting calculations with a trapezoidal and rectangular central element are given, as well as research methods. In particular, mathematical dependencies for calculating elements of fittings of various styles are given. The angular and linear parameters of the fitting elements are shown depending on the distance between the handrails. The proposed method of cutting in the vertical planes of the fitting and handrails and the device for implementing the method. It is shown that after cutting the fitting and handrails using the device, there are practically no gaps in the connection (less than 0.1 mm). The conducted studies showed that there are no standard machines, devices or mechanisms for cutting installed and fixed handrails in a given direction. Therefore, the proposed method of cutting in the vertical planes of the fitting and handrails and the device for implementing the method significantly improved the quality of the connection between the fitting and handrails. The use of the proposed technical solutions will significantly improve the quality of the connection, the design of the product and the convenience of human movement.