Experimental Research on Superlong Deep-Hole Drilling Processing Technology for Beryllium Bronze

2011 ◽  
Vol 130-134 ◽  
pp. 1634-1637 ◽  
Author(s):  
Zhan Feng Liu ◽  
Rui Liang Li
Keyword(s):  
Heat Treatment ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Tool Material ◽  
Cutting Parameters ◽  
Processing Method ◽  
Hole Drilling ◽  
Deep Hole ◽  
Actual Structure ◽  
Beryllium Bronze

According to the material properties and the cutting performance of beryllium bronze, research into the various factors of cutting, such as the materials heat treatment, the cutting tool material, cutting-tool angle and the cutting parameters, combined with the actual structure of the workpiece and the overlong deep-hole processing method for study. The test proved that selected reasonable heat treatment , processing methods, cutting tools and cutting parameters can be solved Φ12mm × 4000mm overlong deep-hole processing problems of the beryllium bronze.

Experimental Research on Superlong Deep-Hole Drilling Processing Technology for Steel of 4145H Drill Collar

2011 ◽  
Vol 201-203 ◽  
pp. 2597-2600
Author(s):  
Zhan Feng Liu ◽  
Rui Liang Li
Keyword(s):  
Cutting Tool ◽  
Cutting Tools ◽  
Tool Material ◽  
Cutting Parameters ◽  
Machining Process ◽  
Hole Drilling ◽  
Deep Hole ◽  
Actual Structure ◽  
Steel Processing ◽  
Drill Collar

Through the analysis for steel of 4145H drill collar, Research into the various factors of cutting, such as the cutting tool material, cutting-tool angle and cutting parameters, combined with the actual structure of the workpiece and the superlong deep-hole processing method for study. In the test, the machining process is analyzed, especially the process of boring and honing. The test result indicates that the trepanning process is stable and reliable to solve the superlong deep hole (Φ71mm×7500mm) of 4145H drill collar steel processing problems of production if the optimizing cutting method is appropriate and the cutting tools and the cutting parameters are rational.

Hardened Steel Turning by Means of Modern CBN Cutting Tools

2013 ◽  
Vol 581 ◽  
pp. 188-193 ◽  
Author(s):  
Łukasz Ślusarczyk ◽  
Grzegorz Struzikiewicz
Keyword(s):  
Cutting Tool ◽  
Cutting Tools ◽  
Tool Material ◽  
Chip Morphology ◽  
Cutting Parameters ◽  
Hardened Steel ◽  
Cutting Depth ◽  
Cutting Rate ◽  
Steel Turning ◽  
The Impact

The paper presents an analysis of the impact of cutting parameters such as cutting rate, feed rate, cutting depth and cutting tool material grade for surface roughness, the components of the total cutting force and chip morphology. We analysed the process of rolling 145Cr steel with a hardness of 55HRC with Wiper type tools with different percentage of CBN. The results and conclusions were presented.

Research on Technology Test of 304 Stainless Steel Super Long Deep-Hole Drilling

2013 ◽  
Vol 774-776 ◽  
pp. 1137-1140 ◽  
Author(s):  
Zhan Feng Liu ◽  
Meng Xu
Keyword(s):  
Stainless Steel ◽  
Cutting Tools ◽  
Cutting Parameters ◽  
304 Stainless Steel ◽  
Hole Drilling ◽  
Tool Geometry ◽  
Drilling Process ◽  
Deep Hole ◽  
Deep Hole Drilling ◽  
Material Tool

In this paper, through the analysis of 304 stainless steel to elaborate the influence of various factors in the process of drilling from the blade material,tool geometry parameters,cutting parameters and drilling methods.It is proved by selecting reasonable processing, cutting tools and cutting parameters (Φ50mm × 4700mm) 304 stainless steel parts of the drilling process issues can be resolved.

scholarly journals Temperature monitoring in the subsurface during single lip deep hole drilling

2020 ◽  
Vol 87 (12) ◽  
pp. 757-767
Author(s):  
Robert Wegert ◽  
Vinzenz Guski ◽  
Hans-Christian Möhring ◽  
Siegfried Schmauder
Keyword(s):  
Cutting Parameters ◽  
Drill Hole ◽  
Machining Process ◽  
Hole Drilling ◽  
Drilling Process ◽  
Deep Hole ◽  
Machining Processes ◽  
Deep Hole Drilling ◽  
Feed Force ◽  
Cutting Zone

AbstractThe surface quality and the subsurface properties such as hardness, residual stresses and grain size of a drill hole are dependent on the cutting parameters of the single lip deep hole drilling process and therefore on the thermomechanical as-is state in the cutting zone and in the contact zone between the guide pads and the drill hole surface. In this contribution, the main objectives are the in-process measurement of the thermal as-is state in the subsurface of a drilling hole by means of thermocouples as well as the feed force and drilling torque evaluation. FE simulation results to verify the investigations and to predict the thermomechanical conditions in the cutting zone are presented as well. The work is part of an interdisciplinary research project in the framework of the priority program “Surface Conditioning in Machining Processes” (SPP 2086) of the German Research Foundation (DFG).This contribution provides an overview of the effects of cutting parameters, cooling lubrication and including wear on the thermal conditions in the subsurface and mechanical loads during this machining process. At first, a test set up for the in-process temperature measurement will be presented with the execution as well as the analysis of the resulting temperature, feed force and drilling torque during drilling a 42CrMo4 steel. Furthermore, the results of process simulations and the validation of this applied FE approach with measured quantities are presented.

scholarly journals Evaluation of Cutting-Tool Coating on the Surface Roughness and Hole Dimensional Tolerances during Drilling of Al6061-T651 Alloy

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1783
Author(s):  
Hamza A. Al-Tameemi ◽  
Thamir Al-Dulaimi ◽  
Michael Oluwatobiloba Awe ◽  
Shubham Sharma ◽  
Danil Yurievich Pimenov ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Cutting Tool ◽  
Good Practice ◽  
Cutting Tools ◽  
Statistical Design ◽  
Cutting Parameters ◽  
Statistical Design Of Experiments ◽  
Hole Quality ◽  
Coated Tools ◽  
Tool Coating

Aluminum alloys are soft and have low melting temperatures; therefore, machining them often results in cut material fusing to the cutting tool due to heat and friction, and thus lowering the hole quality. A good practice is to use coated cutting tools to overcome such issues and maintain good hole quality. Therefore, the current study investigates the effect of cutting parameters (spindle speed and feed rate) and three types of cutting-tool coating (TiN/TiAlN, TiAlN, and TiN) on the surface finish, form, and dimensional tolerances of holes drilled in Al6061-T651 alloy. The study employed statistical design of experiments and ANOVA (analysis of variance) to evaluate the contribution of each of the input parameters on the measured hole-quality outputs (surface-roughness metrics Ra and Rz, hole size, circularity, perpendicularity, and cylindricity). The highest surface roughness occurred when using TiN-coated tools. All holes in this study were oversized regardless of the tool coating or cutting parameters used. TiN tools, which have a lower coating hardness, gave lower hole circularity at the entry and higher cylindricity, while TiN/TiAlN and TiAlN seemed to be more effective in reducing hole particularity when drilling at higher spindle speeds. Finally, optical microscopes revealed that a built-up edge and adhesions were most likely to form on TiN-coated tools due to TiN’s chemical affinity and low oxidation temperature compared to the TiN/TiAlN and TiAlN coatings.

Forecasting Performance of Ceramic Cutting Tool

2017 ◽  
Vol 736 ◽  
pp. 86-90 ◽  
Author(s):  
Vyacheslav Maksarov ◽  
A. Khalimonenko
Keyword(s):  
Electrical Resistance ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Tool Material ◽  
Ceramic Materials ◽  
Specific Electrical Resistance ◽  
Testing Methods ◽  
Microstructural Parameters ◽  
Forecasting Performance ◽  
Nondestructive Testing Methods

The article considers the problems of forecasting the performance of cutting tools equipped with replaceable ceramic cutting bits. It is proposed to forecast the operability of ceramic tools on the ground of dependence between its performance characteristics and the microstructural parameters of the tool material. It is proposed to determine the parameters of ceramic bits microstructure by a nondestructive testing methods based on measuring the specific electrical resistance of ceramic materials. As a result of the study we have undertaken, a relationship was detected between the performance and specific electrical resistance of ceramic cutting tools.

scholarly journals Tool stability analysis for deep hole drilling

2018 ◽  
Vol 224 ◽  
pp. 01035 ◽  
Author(s):  
Sergey Gorbatyuk ◽  
Valery Kondratenko ◽  
Larisa Sedykh
Keyword(s):  
Stability Analysis ◽  
Cutting Force ◽  
Axial Compression ◽  
Cutting Tools ◽  
Critical Value ◽  
Hole Drilling ◽  
Deep Hole ◽  
Compression Load ◽  
Rotary Cutting ◽  
Rotary Cutting Tools

A large number of parts have deep holes, therefore, rotary cutting tools, which represent relatively long and thin columns are used for holemaking. In this article we analyze the behavior of such tools under the influence of an axial compression load, in our case, the axial cutting force Fp , which differs fundamentally from the compression of short tools. Moreover, experience shows that when the cutting force Fp reaches a certain critical value equal to Fkp , a long straight column becomes unstable.

Study on the Cutting Parameter Optimization of Medical Titanium Alloy Based on Tools Durability

2007 ◽  
Vol 24-25 ◽  
pp. 103-108
Author(s):  
Q.L. Du ◽  
X.H. Chen ◽  
Ke Hua Zhang
Keyword(s):  
Titanium Alloy ◽  
Parameter Optimization ◽  
Cutting Tool ◽  
Tool Material ◽  
Cutting Parameters ◽  
Online Optimization ◽  
Geometrical Parameters ◽  
Cutting Parameter Optimization ◽  
Optimization Of Cutting Parameters ◽  
Tool Durability

In this paper, based on analyzing the properties of medical Ti-6Al-4V Titanium alloy, the author takes the purpose of studying the machinability of the medical Ti-6Al-4V Titanium alloy and aims at improving the tool durability. The study starts from the tool material, geometrical parameters of the tools, usage for the cutting and other aspects in order to achieve the suitability of selecting cutting tool as well as the optimization of choosing cutting usage which lays the foundation for further investigation of the machinability of the medical Ti-6Al-4V Titanium alloy and carry out the online optimization of cutting parameters.

Life Prediction of Cutting Tool by the Workpiece Cutting Condition

2011 ◽  
Vol 223 ◽  
pp. 554-563 ◽  
Author(s):  
Noemia Gomes de Mattos de Mesquita ◽  
José Eduardo Ferreira de Oliveira ◽  
Arimatea Quaresma Ferraz
Keyword(s):  
Cutting Tool ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Operating Conditions ◽  
Production Costs ◽  
Depth Of Cut ◽  
Cutting Condition ◽  
Workpiece Material ◽  
The Cost

Stops to exchange cutting tool, to set up again the tool in a turning operation with CNC or to measure the workpiece dimensions have direct influence on production. The premature removal of the cutting tool results in high cost of machining, since the parcel relating to the cost of the cutting tool increases. On the other hand the late exchange of cutting tool also increases the cost of production because getting parts out of the preset tolerances may require rework for its use, when it does not cause bigger problems such as breaking of cutting tools or the loss of the part. Therefore, the right time to exchange the tool should be well defined when wanted to minimize production costs. When the flank wear is the limiting tool life, the time predetermination that a cutting tool must be used for the machining occurs within the limits of tolerance can be done without difficulty. This paper aims to show how the life of the cutting tool can be calculated taking into account the cutting parameters (cutting speed, feed and depth of cut), workpiece material, power of the machine, the dimensional tolerance of the part, the finishing surface, the geometry of the cutting tool and operating conditions of the machine tool, once known the parameters of Taylor algebraic structure. These parameters were raised for the ABNT 1038 steel machined with cutting tools of hard metal.

Optimal Design of Multi-Edge Cutting Tools for BTA Deep-Hole Machining

1979 ◽  
Vol 101 (2) ◽  
pp. 281-290 ◽  
Author(s):  
V. Latinovic ◽  
R. Blakely ◽  
M. O. M. Osman
Keyword(s):  
Objective Function ◽  
Cutting Force ◽  
Cutting Tools ◽  
Design Procedure ◽  
Preliminary Test ◽  
Cutting Parameters ◽  
Deep Hole ◽  
Cutting Head ◽  
Nonlinear Objective Function ◽  
Hole Machining

The design procedure of optimal multi-edge BTA deep-hole machining tools with unsymmetrically located cutters and preliminary test evidence are presented. Based on a mathematical model of cutting forces in terms of fundamental cutting parameters of the tool, a multivariable, nonlinear objective function was derived and modified to an unconstrained type with bounded decision variables. A numerical, direct search method, accelerated in distance, was selected to minimize the objective function. This procedure insures, on one hand, a predetermined cutting force resultant necessary for tool guidance; on the other hand, it minimizes the variation of cutting edge pressure. A relatively fast computer routine was adapted to provide the optimal tool parameters, which then were used to design cutting head prototypes. Two trepanning heads of three and two cutters were manufactured and tested at production facilities. The test results showed that the cutting force resultant was well predicted in both heads and that they were well guided. Much higher feed rates were possible compared to those achieved with single-edge tools without any loss of hole accuracy straightness or surface finish.

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