Abstract

The article observes the amount of vibration on the bearing house of a turning lathe selected in advance through the change of the revolutions per minute and the thickness of the removed material in frontal type of lathe processing. Increase in mechanical vibration values depending on the value of nominal thickness of splinter was observed during changing technological parameters of the drilling process as a consequence of rotation speed of the motor. The vibration acceleration amplitude course changes depending on the frequencies are evaluated together for 400, 800 and 1200 motor r/min. A piezoelectric sensor of the type 4507B-004 from the Brüel & Kjaer Company was used for monitoring the frequency analysis of the vibration, which was attached to the bearing house of the lathe TOS SV 18RB. The vibration signal measured during the processing and during the time period is transformed through the means of a quick Fourier transformation to the frequency spectrum in the range of 3.0–10.0 kHz. Measured values of vibration acceleration amplitude were processed and evaluated by the SignalExpress software. Graphical abstract Unwanted vibration in machine tools like lathe is one of the main problems as it affects the quality of the machined parts and tool life and creates noise during machining operation. Bearings are of paramount importance to almost all forms of rotating machinery and are the most common among machine elements. The article describes in more detail the issue of vibrations created when machining the material by lathe turning. It also includes execution, experiment evaluation in this field, and comparison of measured vibrations’ acceleration amplitude values according to the standards. [Formula: see text][Formula: see text]

Highlights

  • Research on mechanical vibration and methods for its elimination presently gained an importance

  • We can see from the comparison graph of frequency spectrum covers (Figure 5(a)) for processing of material selected in advance and set motor speed of 400 r/min that the highest vibration resonance values were achieved for processing without load

  • Based on norm ISO 10816-3, the lathe TOS SV 18RB with 9 kW output belongs to group 4, where individual parts and subgroups of machines integrated into the overall system working in normal operational conditions belong

Read more

Summary

Introduction

Research on mechanical vibration and methods for its elimination presently gained an importance. Advances in Mechanical Engineering to the spread of speed machining methods. The research on vibration issues during metal processing through machining was not sufficient. The difference and benefit of this article when compared to that of the work done by Gerard and from Eze is examining the effect of generating a vibration in the other working and operational conditions set during operation. The research will be focused on vibration measurements with different objectives, namely, to establish the most appropriate setting of operating parameters and optimize the machining process, eliminating the influence of vibrations. The expected result was obtained.[1,2]

Objectives
Methods
Findings
Conclusion
Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call