Increasing the Productivity of Multitool Machining on Automated Lathes by Optimizing the Machining Plan

Abstract

A method is developed for optimizing surface machining plans on the basis of a mathematical model in which the influence of the diameter in each pass on the dimensional precision is taken into account in multipass surface machining on multispindle automatic lathes. That permits calculation of the number of operations, the cutting depth in each pass, and the intermediate quality classes corresponding to maximum machining productivity in automatic lathes.

Digital Twins for Computer Aided Design on Lathe Operations

“…However, as a result of a survey of a number of enterprises, it turned out that the basic time in the manufacture of similar parts can differ by 1.5 -2 times. As a result of analyzing the reasons for this situation, among others, differences in the parameters of applied tools and adjustment structures that differ in surface machining plans, distribution of tools on machine positions and methods of tool replacement were revealed [1,2].…”

Theoretical Basis for the Development of an Algorithmic Unified Complex of Mathematical Models of Cutting Forces

“…As part of the creation of a matrix theory of the accuracy of multi-tool machining [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], for a range of multi-tool adjustments, two classes of error models for the dimensions performed have been developed:…”

“…Thus, for the practical application of the machining error models developed in [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], the dependences of the coordinate components of the cutting forces on technological factors are necessary (parameters of cutting conditions, strength properties of the material being machined, deformation properties of the technological system, etc.). These dependencies establish the so-called cutting force models.…”

“…Koshin's plane-parallel accuracy theory [18] of multi-tool machining is based on traditional empirical power dependences for the components of cutting forces. Machining error models in the proposed matrix theory of accuracy [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] are also formed using power dependences for the components of cutting forces:…”

Decision-making in the conditions of introduction of automated design systems of technological processes in enterprises of oil machine building

“…Designing plans for surface treatment on automatic lathes with insufficient productivity Improving the productivity of multi-tool machining on automatic lathes by optimizing surface treatment plans [7] 2 Design of multi-tool double-carriage adjustments with insufficient productivity Improving the productivity of multi-tool machining on automatic lathes by optimizing the placement of tools by machine positions [8] 3 Insufficient performance in multi-axis machining Optimization of multi-axis machining [9] 4 Insufficient milling performance Optimization of the milling operation [10,11] 5 Non-optimal tool path when machining on CNC machines Optimization of the tool path when machining on CNC machines [12] 6 Insufficient cutting speed Optimization of cutting speed based on the model of the shear plane scheme during the formation of chips in the cutting process [13] 7 Tool wear is not taken into account when changing the cutting force during turning Optimization of turning, taking into account tool wear when changing the cutting force [14] 8 Insufficient time, cost and product quality Optimization of time, cost and quality of the product [15] 9 Excess power consumption when turning Optimization of cutting conditions during turning in order to minimize energy consumption [16] 10 Insufficient grinding performance Optimization of automatic grinding cycles [17]…”