Research on Modeling and Simulation of Linearity Controlling in Gun Drill Machining

2013 ◽  
Vol 423-426 ◽  
pp. 828-832
Author(s):  
Shu Qin Chen ◽  
Yao Ming Li ◽  
Pei Kangc Bai ◽  
Xing Quan Shen
Keyword(s):  
Modeling And Simulation ◽  
High Precision ◽  
Machine Tools ◽  
Cutting Tools ◽  
Machining Process ◽  
Deep Hole ◽  
Vibration System ◽  
Analysis Software ◽  
Gun Drill ◽  
Drill Cutting

With the diversified market demands, the high precision deep hole processing increased and the difficulty coefficient has been getting greater, Therefore, how to improve the deep hole linearity problem is also imminent. This article studies on the linearity deviation problems in the process of small deep hole processing which diameter is between 3 and 16. From the parameters of gun drill cutting tools, accessoties of machine, and the vibration system of machine tools in the machining process, etc., to discuss the reasons affecting the linearity and put forward corresponding solutions for various influencing factors. Finally through computer analysis software and experimental means to verify the feasibility of the scheme.

scholarly journals Features and Characteristics of Motorized and Non-Motorized Milling Spindles

2020 ◽  
Vol 9 (4) ◽  
pp. 1095-1100
Keyword(s):  
Machine Tools ◽  
Cutting Tools ◽  
Control Device ◽  
Common Type ◽  
Machining Process ◽  
Industrial Practice ◽  
Quality Of Products ◽  
Efficiency And Reliability ◽  
Reliability And Availability

The Cutting process used in milling is one of the most common type of industrial machining methods. Similar to traditional milling spindles, the motor driven spindles are fitted with an integrated motor, thereby eliminating belts and gears for the transmission of power from the motor to the cutting tools. The innovative machine tools should be highly characterized systems in order to retain the necessary precision, efficiency and reliability. To satisfy their end user's reliability and availability requirements, both the spindle system (Tool/Tool-Holder/ Spindle) and motor tool system need to be configured for their usability and output results. However, the quality of a control device in industrial practice is greatly affected by the spindle cutting output and its reliability. The motor spindles are nothing but the rotating drive shafts which acts as axes for cutting force tools or in machining process for holding cutting instrument. Hence the spindles are one of the important factor in machining tool process and productivity, as these are used to produce parts as well as machines that produce components, which in turn have a significant impact on production levels and quality of products.

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.

Mini Special Issue on Machining Control and Process Monitoring

2014 ◽  
Vol 8 (6) ◽  
pp. 791-791
Author(s):  
Tojiro Aoyama
Keyword(s):  
Machine Tool ◽  
Process Monitoring ◽  
Machine Tools ◽  
Cutting Tools ◽  
Machining Process ◽  
Machining Accuracy ◽  
Special Issue ◽  
Practical Proposal ◽  
Machining Control ◽  
Novel Approaches

Control and process monitoring are key technologies supporting high machining accuracy and efficiency. This special issue features six papers taking novel approaches to controlling machine and cutting tools and monitoring the machining process. The motion control of machine tools and cutting tools are introduced. A new challenge for monitoring the machining process by referring to NC control servo signals implements a practical proposal. The precise identification of friction at driving elements of machine tool components is an important factor in improving machine tool control motion accuracy. I would like to express my sincere appreciation to the authors and reviewers whose invaluable efforts have helped make the publication of this manuscript possible.

Research of Machining Process on 17-4PH Stainless Steel Superfine Deep-Hole Drilling

2014 ◽  
Vol 633-634 ◽  
pp. 688-692 ◽  
Author(s):  
Zhan Feng Liu ◽  
Han Chen Wang
Keyword(s):  
Stainless Steel ◽  
Wall Thickness ◽  
Machining Process ◽  
New Method ◽  
Hole Drilling ◽  
Drilling Process ◽  
Deep Hole ◽  
Deep Hole Drilling ◽  
Gun Drill

Through the analysis of superfine deep-hole drilling process, we used the combination of gun drill and BTA deep-hole drilling process for 17-4PH (0Cr17Ni4Cu4Nb) stainless steel deep-hole drilling test. We measured wall thickness point by point, and calculated the conversion of the eccentricity in a deviation axis line. Which fully embodies the advantage of this process for stainless steel 17-4PH, and provides a new method in super hardness material deep-hole drilling field.

Special Issue on Modeling and Simulation of Cutting Process

2010 ◽  
Vol 4 (3) ◽  
pp. 213-213
Author(s):  
Keiichi Shirase
Keyword(s):  
Machine Tool ◽  
Modeling And Simulation ◽  
Process Modeling ◽  
Machine Tools ◽  
Numerical Control ◽  
Cutting Process ◽  
Machining Process ◽  
Special Issue ◽  
Machine Tool Dynamics ◽  
Tool Dynamics

In the 5 decades-plus since the first numerical control (NC) machine tool was demonstrated at the Massachusetts Institute of Technology in Boston, MA, USA, advances such as high-speed, multi-axis and multi-tasking machine tools have been introduced widely to achieve high quality and productivity in machining operations. In order to handle these sophisticated machine tools freely and effectively, sophisticated NC programs are conventionally required in advance for problem-free machining. Computer simulation and optimization of cutting processes by considering process physics, machine tool dynamics and kinematics and process constraints are helpful in the strategic process planning operation and useful in preparing sophisticated NC programs. However, challenges and models quantitatively predicting cutting process performance remain to be developed. Topics of interests in this special issue include but are not limited to - machining process modeling - machine tool dynamics modeling - cutting force, cutting temperature, surface roughness, etc., prediction - machining stability prediction - simulation-based machining-process diagnostics - optimization using machining simulation The review paper and ten research works accepted are related to state-of-the-art modeling and simulation applicable to the machining and manufacturing domains. Besides traditional machining, nontraditional machining such as laser machining for micromachining have been explored. Also the machining of calcium polyphosphate (CPP) for tissue engineering applications has been investigated. The articles in this special issue are sure to prove interesting, informative, and inspiring to our readers on advances in cutting process modeling and simulation. Finally, we thank the authors, reviewers, and editors for their invaluable contributions and generous efforts in enabling this issue to be published.

Special Issue on Measurement and Control in Machine Tools and Machining Process

2009 ◽  
Vol 3 (4) ◽  
pp. 377-377
Author(s):  
Atsushi Matsubara ◽  
Keyword(s):  
Process Control ◽  
Machine Tools ◽  
High Speed ◽  
Cutting Tools ◽  
Machining Process ◽  
Sufficient Information ◽  
Control Technology ◽  
Special Issue ◽  
High Productivity ◽  
Development Approach

Manufacturing fields in high-income countries have tended to pursue high quality and high productivity together. In conventional machining, however, machine tools, cutting tools, machining process, and measurement technologies have progressed individually rather than together -- mainly due to the production industry configuration. With society’s needs growing and diversifying, however, development approach that combines distinct technologies without integration no long ensures competitiveness. In a world where knowledge and ideas regarded as know-how and used implicitly, knowledge and ideas should be integrated into explicit software with adequate hardware. The important issues are as follows:<br /> (1)Process monitoring technology providing sufficient information for systems to make decisions based on economical investment<br /> (2)Process control technology based on a deeper understanding of processes themselves and of the nature of control<br /> (3)Motion control technology for precise, high-speed, versatile movement in support process control This special issue provides the latest topics related to these issues, and we are sure readers will enjoy reading about and sharing ideas toward a new machine tools and manufacturing technology paradigm. We thank the authors for their contributions to this special issue and the reviewers and editors for their ongoing efforts.

Research of On-Machine Laser Measurement Method for Cutting Tools

2014 ◽  
Vol 1039 ◽  
pp. 223-228
Author(s):  
Xian Liang Chi ◽  
Xi Zhang ◽  
Fan Jiang
Keyword(s):  
High Precision ◽  
Cutting Tools ◽  
Machining Process ◽  
Laser Measurement ◽  
Process Technology ◽  
Detection Algorithms ◽  
Tool Shape ◽  
Photodiode Array ◽  
Measuring Tool ◽  
Tool Diameter

To successfully achieve high precision machining, process technology and on-machine measurement is essential. On-machine laser measurement will be widely used in industry because it is non-contacting, real-time and high-precision. However, proper method for tool shape monitoring and dimensional control are important to research. In this study, the measurement system consists of a laser light source and a quad photodiode array. And two different edge detection algorithms are introduced to determine the position of the tool edge accurately in order to measure the diameter of cutting tool and errors caused by tool runout. The experimental results verify the validity of measuring tool diameter and runout error.

Innovative Design of Device of Conical Deep-Hole Boring

2012 ◽  
Vol 271-272 ◽  
pp. 969-973
Author(s):  
Da Guo Yu ◽  
Xing Quan Shen ◽  
Ji Ming Wang
Keyword(s):  
High Precision ◽  
Principal Axis ◽  
Pulse Generator ◽  
The Other ◽  
Work Piece ◽  
Deep Hole ◽  
Servo Motor ◽  
Innovative Design ◽  
Gun Drill ◽  
The One

The device is designed for the solutions of the ready-deformation, hard feeding of the boring rod of conical deep-hole boring, and of impossible boring by the gun drill, BTA drill and DF drill during conical deep-hole boring. The central hole of the boring rod is fitted with boring cutter, rod with double cones, cylindrical rod, threaded and splined rod. The front cone of the rod with double cones is set through the conical hole of boring cutter and reaches only one side of the hole. The rear one of the rod with double cones is in contact with the one end of the springing rod of which the other reaches the surface of bored work piece. The industrial endoscope is set within the hole drilled in boring rod. The servo motor, by the way of NC device, is linked with pulse generator, which connects the principal axis of lathe. The design is advantaged with a springing rod which prevents the deformation of boring rod, and with servo motor, NC device, and industrial endoscope supporting conical deep-hole boring of high precision.

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.

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