Cutting Force Prediction for Trochoid Milling of 300M Ultra-High Strength Steel
Round 1
Reviewer 1 Report
In this article,the instantaneous chip thickness during trochoid milling has been predicted based on the numerical and analytical methods, a semi-mechanical cutting force model based on chip thickness is established, and experiments are designed to compare the cutting force coefficients extracted from trochoid milling and slot milling, and the relationship between the trochoid milling parameters and the cutting force coefficients is obtained with a linear regression method. A effective cutting force model has been establised, which has certain application potential.
Some problems need to be revised,
1、 As the abstract, it should be a refinement of conclusions,rather than lengthy narration.
2、Why the tested material composition is not fixed but in a range?
3、In Fig.12-16, there are obvious irregular fluctuations in the experimental data of the force, while in the simulated curve does not shows the features, a detailed explanation is needed.
4、In the clusion 2, what does "Model between force coefficients."mean?
5、A thorough check for the format errors and grammar errors should be carried out, such as
Line 86 90, letter case of "ZHANG,PLETA".
The legend cannot be outside the picture frame.
Kt in equation(14) 325 should be 3254? accoring to Fig.11(d).
There is no (c) in Fig.11. (a-d) should only appear once in Fig.11.
Format of reference should be checked carefully, especially the uppercase and lowercase letters.
Author Response
Please refer to the attachment
Author Response File: 
Author Response.docx
Reviewer 2 Report
The authors presented aspects of milling 300M ultra-high strength steel. A semi-mechanical cutting force model grounded on chip thickness was established and experiments were designed to compare the cutting force factors obtained from trochoidal and slot milling. The relationship between trochoidal milling parameters and cutting force factors was obtained by a linear regression between the tangential cutting force coefficients obtained from trochoid milling and slotting experiments.
The paper seems interesting. I have no main doubt about its content. However, I found errors and flaws in this paper. It must be fixed.
Weak
The paper is sloppily formatted. It should be strictly aligned with the journal template with chapter subtitles and figure captions.
Noticed errors
1. All the work and especially Abstract in my opinion requires consultation with an English native speaker.
2. Despite the interesting presentation of the state of the issue in Chapter 1. Introduction, it lacked a summary and a clearly presented research gap that should have resulted from the analysis of the state of the issue.
3. Lines 220-221. The equation has no ordinal number.
4. Lines 229. The expression has no ordinal number.
5. 12 lines of conclusions for 19 pages is far too modest. It is imperative that the conclusions be expanded, as the work has exciting potential, untapped by the authors. Also missing is a conclusion(s) for further research.
6. The References chapter also requires a strict match to the template and the removal of mysterious symbols such as [J]
Small errors
1. Lines 86, 90. The authors' names should not be distinguished by capitals.
2. Figure 1 caption. Is: (a)Tool trajectory diagram. (b)Current…;
should be: (a) Tool trajectory diagram. (b) Current…
3. Figure 2 caption. As above.
4. Figure 3 caption. Is: single-tooth…; should be: Single-tooth…
5. Figure 5 caption. Is: (a)Double cutter tooth chip shape construction diagram;(b) Double…
should be: (a) Double cutter tooth chip shape construction diagram; (b) Double…
6. Pages 11/12 and 17/18. Bad pagination.
7. Line 290. Is: experiments; should be: Experiments
8. Line 297. Is: 100mm×80mm×30mm; should be: 100 mm×80 mm×30 mm. Such errors should be corrected throughout the work.
9. Line 390 Figure 9 caption. Is: Fig. 9; should be: Figure 9.
Author Response
Please refer to the attachment
Author Response File: Author Response.docx
