Determination of Methodology and Research of the Influence of the Trial Run of High-Precision Reducers on the Change of Their Characterizing Properties

Round 1

Reviewer 1 Report

This paper describes a series of experiments on the torsional rigidity of the TwinSpin bearing reducer , which integrates roller bearings in the radial and axial arrangement of the rolling elements of the reducer. The authors evaluate a wide range of diagnostic methods and techniques to determine the technical condition of the examined object of measurement of high-precision reducers in course of the research.

 The following comments need to be addressed carefully before I can recommend for publications:

(1) The contributions of the paper is not clear enough from abstract and conclusion.

(2) The writing style is more like a report rather than paper. There is a lack of flow in the paper, which makes it difficult to read. Sudden jumps from sections could be improved.

(3) How this work differ from the state-of-the art works? i.e., please clarify the novelty of this work.

Author Response

Dear reviewer,

thank you very much for your comments on the article. In this annex I attach the changes made to the article. I respond to your comments below:

 

Comments and Suggestions for Authors

This paper describes a series of experiments on the torsional rigidity of the TwinSpin bearing reducer, which integrates roller bearings in the radial and axial arrangement of the rolling elements of the reducer. The authors evaluate a wide range of diagnostic methods and techniques to determine the technical condition of the examined object of measurement of high-precision reducers in course of the research.

The following comments need to be addressed carefully before I can recommend for publications:

(1) The contributions of the paper is not clear enough from abstract and conclusion.

The abstract and conclusion were supplemented by a brief summary of the benefits and objectives of the article.

 

(2) The writing style is more like a report rather than paper. There is a lack of flow in the paper, which makes it difficult to read. Sudden jumps from sections could be improved.

(3) How this work differ from the state-of-the art works? i.e., please clarify the novelty of this work.

The aim of the article is a comprehensive research in the field of elaboration of a methodology for measuring the properties of high-precision reducers during their commissioning. This work is a combination of theory and experimental techniques. This work brings important knowledge for industry where high positioning accuracy is required, especially for the field of robotics and in the development of high-precision machines. Manufacturers in this industry require, in addition to the requirement for accuracy and reliability, a high gear ratio, high kinematic accuracy, high tilting rigidity, backlash, high torque capacity, compact size, low weight and high load capacity, which can be ensured by high-precision gearboxes. The article describes the recommendations and the developed methodology for the introduction of the bearing reducer into operation after its incorporation into the relevant device.

Author Response File: Author Response.docx

Reviewer 2 Report

The manuscript is intetesting and very well written, so I recommend the publication on Applied Sciences after (very) minor revisions. For example,

(1) Page 4, Eq. (3): better place the high dots, please. Moreover, use the roman fonts for "if", "or" and "in other cases". Is "a" a typos for "and"? Use also a better alignment, expecially for "in other cases".

(2) Page 5, line 177: a space is missed before "et al.".

(3) Indentation is not always necessary after an equation. See, for example, page 5, Eq. (6). Check accurately all the equations, add final points when necessary, check the journal style, and use the right character (uppercase or lowercase) in the line following the equation (see, for example, page 5 Eq. (7)).

 

Probably, the manuscript would profit if one tried to improve Introduction and references (many of them Russian) by providing a broader overview of recent research both theoretical and Industry 4.0 trends (and mechanical applications, in particular, as the authors certainly know). I limit myself to suggesting some new theoretical methods of an analytical-computational nature to infinitesimals with arbitrary high variable precision, very promising, which, in addition to being patented in EU, USA, etc., (also Russia, as the incipit seems to have been given by  Russian researchers), are applied in many different contexts (more than 200 papers around the world).  For example, see the bibliography in {doi: 10.1016/j.cnsns.2019.105019} (applicable to singularities, parasitic non-linearities, etc.).

Author Response

Dear reviewer,

thank you very much for your comments on the article. In this annex I attach the changes made to the article. I respond to your comments below:

 

Comments and Suggestions for Authors

The manuscript is interesting and very well written, so I recommend the publication on Applied Sciences after (very) minor revisions. For example,

 

 (1) Page 4, Eq. (3): better place the high dots, please. Moreover, use the roman fonts for "if", "or" and "in other cases". Is "a" a typos for "and"? Use also a better alignment, expecially for "in other cases".

All equations in the article were checked and adjusted according to the required formatting.

 

2) Page 5, line 177: a space is missed before "et al.".

The texts of the article were checked and the formal errors found were corrected.

 

(3) Indentation is not always necessary after an equation. See, for example, page 5, Eq. (6). Check accurately all the equations, add final points when necessary, check the journal style, and use the right character (uppercase or lowercase) in the line following the equation (see, for example, page 5 Eq. (7)).

Probably, the manuscript would profit if one tried to improve Introduction and references (many of them Russian) by providing a broader overview of recent research both theoretical and Industry 4.0 trends (and mechanical applications, in particular, as the authors certainly know). I limit myself to suggesting some new theoretical methods of an analytical-computational nature to infinitesimals with arbitrary high variable precision, very promising, which, in addition to being patented in EU, USA, etc., (also Russia, as the incipit seems to have been given by  Russian researchers), are applied in many different contexts (more than 200 papers around the world).  For example, see the bibliography in {doi: 10.1016/j.cnsns.2019.105019} (applicable to singularities, parasitic non-linearities, etc.).

The reference list was supplemented by important publications in the field of research.

Author Response File: Author Response.docx