Improving the efficiency of grinding teeth by copying with the control of dynamic technological connections

Abstract

The conception of dynamic technological connections during machining is developed. Dynamic technological connections are presented that act during the formation of surfaces and indicators of the production quality of the product and its components during machining. Managing of relationships are sources of improving the quality of manufacturing parts. Some output technological parameters that form the quality of parts during machining are investigated, and factors influencing them. The mechanism and pattern of changes in the actual depth of cut during grinding of teeths by copying were identified. The method was determined to ensure its stability with by control of dynamic technological connections. Achieved improved quality of grinding teeth and processing performance when grinding teeth with copying compared with the traditional method. Keywords: dynamic; technological connections; grinding; control; depth of cut; quality.

The Issues of Improving Surfaces Quality and Productivity in the Grinding with the Copy Method for Shaped and Tooth Surfaces

“…Number of teeth Z = 40, module m =4mm, length of teeth l =44mm, gear wheel with material steel 40XH, [8] material hardness HRC 49-52, 2. The number of teeth is Z = 32, the module m =5mm, the tooth length l =45mm, the hardness of the core material is 342-368 HB, and a gear wheel made of 12ХН3А steel is used [14].…”

“…Considering the above, to ensure the efficiency of tooth grinding with the proposed method, the number of rows of teeth rotated by the maximum angle n α from the vertical symmetry plane, which ensures the possibility of parallel grinding of involute profiles of opposite teeth with two grinding wheels, allowed by the methodology presented by the authors is used for determination [9,18]. At this time, two options for determining the optimal number of rows of the turned tooth with the maximum inclination to be grinded are used: the number of teeth of the gear wheel is expressed in even numbers, and the number of teeth is expressed in odd numbers.…”

Increasing the Efficiency of Forming Complex Rotating Surfaces with the Controlling of Technological Connections

“…When grinding surfaces of a complex profile by copying, its elementary sections are located at different angles to the tool axis in the cutting zone. Despite the fact that a constant processing allowance Z is provided in the direction normal to the profile, the actual processing allowance and cutting depth t at the sites of elementary sections of the profile take on variable values along the shaped profile, depending on their position during grinding [7,17,19]. by changing the values of the cutting depth along the machined surface, according to the principle of heredity of the technological process, the values of non-removable cutting depths and changes the physical and mechanical processes changes the physical and mechanical processes [4,[20][21].…”

“…Among them, threaded and serrated surfaces are the most commonly used. Such surfaces, operating conditions that require high precision and quality, are usually ground [1,[5][6][7].…”

“…It is more economical to grind complex shaped surfaces with grinding wheels with appropriate profiles. Grinding complex shaped surfaces using the copying method not only ensures high precision processing, but also relatively high productivity [1,4,8,9].…”