Automatic compensation of tool disturbances, caused by an unstable cutting process

В Г Гусев

doi:10.1051/matecconf/201929800017

Abstract

Modern machining processes are characterized by a separate functioning of the elements of technological system (TS). The cutting mode, that determines the machining efficiency, depends on the functional capability of a low-performance element, and the other higher-performance elements are not able to reduce the workload of the first element. The “strong” element of the TS can not help the “weak” one in reducing the received workload. The transfer of a part of the workload from the “weak” to the “strong” element allows to use the higher cutting mode. In such statement the increase of efficiency of machining processes in the scientific and technical literature was not observed. Is offered to connect a pliable cutting tool with a rigid large-sized workpiece by special contact knot, which allows to compensate the tool perturbations, caused by unstable process of cutting. This knot provides a dissipative and elastic connection between the tool and the workpiece, has been made and tested at holes machining. As a result the increase of efficiency of machining processes of holes was installed.

Highlights

In the industry the large-sized details have a wide application, the weight of such details is measured by tens and hundreds kg
A weld surface is processed on the minimum cutting regimes at a big wear of an expensive cutting tool, what increase the technological cost
From (14) we find the radial stiffness value, which the elastically plate 9 of the Elastic damping element 5 (EDE) 7 should have (Fig. 3) to compensate the force ΣX : EI

Summary

Introduction

In the industry the large-sized details have a wide application, the weight of such details is measured by tens and hundreds kg. To eliminate noted shortcomings is offered a new direction of raise of functional properties of the TS [19, 20] It was previously noted, that the elements of technological system differ from each other in their static and dynamic properties: one of the elements (for example, a large-sized workpiece) has a high stiffness, vibration resistance, large mass, inertial and damping ability, but the other element (the cutting tool) is characterized by its low values. Where Dd - is the maximum diameter of the EDE, when it is not inserted into the machined hole with a diameter Do. As a result of the counterbore axis bending, the elastic displacements of the plates 9 in the points k and l become equal to:. To solve the spatial task, it is necessary to consider the displacements of all elastic plates 9, which contact with the processed hole 14 on the all circumference

Automatic compensation of the external disturbances of the cutting tool

Conclusion