data acquisition case studies
Geometry of single point turning tools and drills
Ngày tải lên :
08/04/2014, 11:17
... 10.1007/978-1-84996-053-3 Springer London Dordrecht Heidelberg New York British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library Library of Congress ... in any form or by any means, with the prior permission in writing of the publishers, or in the case of reprographic reproduction in accordance with the terms of licences issued by the Copyright ... ranges of tool geometry parameters provided by handbooks Being at least 20+ years outdated, these data not account for any particularities of a machining operation including a particular grade of...
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Tài liệu Cutting Tools P1 pptx
Ngày tải lên :
17/12/2013, 11:15
... appear to be similar, the applications of these tool materials may be entirely different In most cases the tool manufacturers will provide tools made of the proper material for each given application...
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Tài liệu Cutting Tools P2 ppt
Ngày tải lên :
17/12/2013, 11:15
... when delicate, light cuts are required which exert minimum force against the workpiece, as in the case of thin wall tubing, for example Other uses of double positive inserts are for very soft or ... 30 and 45 degrees As seen in Figure 2.15, the volume of chip material is about the same in each case but the positive lead angle distributes the cutting force over a greater area of the tool’s ... may become a problem when machining a workpiece that is not well supported Care must be taken in cases where an end support, such as a tail stock center is not used Feed (IPR) Undeformed chip thickness...
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Tài liệu Cutting Tools P3 pdf
Ngày tải lên :
17/12/2013, 11:15
... determination very difficult The first comprehensive tool life data were reported by F.W Taylor in 1907, and his work has been the basis for later studies Taylor showed that the relationship between cutting ... bar of aluminum exposed to the same set of test conditions would measure 100.125 inches In this case, the change in the aluminum bar length was nearly twice that of the steel bar This is a clear ... Machinability ratings based on tool life cannot be compared if a high speed steel tool is used in one case and a sintered carbide tool in another The superior life of the carbide tool would cause the...
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Tài liệu Cutting Tools P4 pptx
Ngày tải lên :
17/12/2013, 11:15
... with cutting fluids altogether by cutting dry The decision to cut wet or dry must be made on a case- by -case basis A lubricious fluid often will prove beneficial in low-speed jobs, hard-to-machine ... forces on the cutting tool and the tool tip temperature are essentially constant For the special case of facing, the varying cutting speed will affect the tool tip temperature Higher temperatures ... four jaw chucks are shown in Figure 4.8 Between Centers: For accurate turning operations or in cases where the work surface is not truly cylindrical, the workpiece can be turned between centers...
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Tài liệu Cutting Tools P9 doc
Ngày tải lên :
25/12/2013, 23:17
... about half the size of a conventional gun Speeds and feeds for gun drilling are ferred In this case, chips tend to be drill of the same diameter using the based on the workpiece material and ... outer and inner tubes, no space is required between the drill tube and the hole wall as in the case of STS drilling The Ejector System is therefore often used for machining in workpieces where ... machines, while • Dissipation of heat event of overloading The machine Ejector drilling and, in some cases, gun • Flushing of chips spindle should not be able to start until drilling, can be done relatively...
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Tài liệu Cutting Tools P10 pptx
Ngày tải lên :
25/12/2013, 23:17
... workpiece Since diameter of the hole in the angle together will equal less than boring is done in most cases, in a workpiece must be taken into consid- 90 degrees A positive rake angle pre-machined hole ... tool geometry and can give rise to vibration In those force with a degree lead angle A the cutting data chosen, and also c a s e s understanding how various types of where the boring bars and tool ... the radial and tangential cutting forces, and the emergence of vibration However, this is not the case with radial cutting forces The deflection of the tool in a radial direction is instead affected...
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Tài liệu Cutting Tools P12 pdf
Ngày tải lên :
25/12/2013, 23:17
... will result The excessive clamping forces can cause enough cutter body distortion that in some cases when loading inserts into a milling body, the last insert slot will have narrowed to a point ... and negative rake milling or push the cutter away from the workpiece may be beneficial in some cases because the force tends to ‘load’ the system, which often reduces chatter Double Positive ... rake and as with double positive inserts, this provides the proper clearance for cutting In the case of positive/negative cutters, the workpiece is contacted away from the cutting edge in the...
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Tài liệu Cutting Tools P13 pdf
Ngày tải lên :
25/12/2013, 23:17
... controls are usually mounted on the side of the column The base is usually hollow, and in many cases serves as a sump for the cutting fluid A pump and filtration system can be installed in the ... In all milling operations, the work is held by fixtures, vises, or clamping arrangements In most cases the work is held stationary in relation to the table while it is being machined, but work ... surfaces The indexer may be mounted with the axis of the chuck vertical or horizontal, and in some cases the chuck may be replaced with a specially made holding fixture or a faceplate If necessary,...
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Tài liệu Cutting Tools P14 docx
Ngày tải lên :
25/12/2013, 23:17
... available with capacities of to 25 tons, strokes up to 36 inches, and speeds as high as 40 FPM In some cases, universal machines have been designed which combine as many as three different broaching...
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Tài liệu Cutting Tools P16 pptx
Ngày tải lên :
25/12/2013, 23:17
... totally replaced natural abrasive materials Even natural diamonds have been Work replaced in some cases by synthetic diamonds The manufactured abrasives most commonly used in grinding FIGURE 16.1:...
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Tài liệu Cutting Tools P11a docx
Ngày tải lên :
25/12/2013, 23:17
... see Fig 11.4) Work to be reamed can either be held in a chuck or mounted onto the faceplate In case of a turret lathe, the reamer can only be used in the hex turret Sometimes reamers are held...
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Tài liệu Cutting Tools P11b docx
Ngày tải lên :
25/12/2013, 23:17
... Chap 11: Reaming and Tapping Chap 15: Saws and Sawing The gun tap has, in many cases, replaced the ‘standard’ style in industry, especially for open-ended trough holes in mild ... are FIGURE 11.12: (a) Spiral-point taps have replaced ‘stanshaped so that they dard’ taps in many cases (b) A spiral-fluted bottoming tap ‘cold form’ the metal (Courtesy: Morse Cutting Tools) out...
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Báo cáo hóa học: " Structural Analysis of Single-Point Mutations Given an RNA Sequence: A Case Study with RNAMute" potx
Ngày tải lên :
22/06/2014, 23:20
... These test cases are shorter in their sequence lengths (< 100 nt), and they can be analyzed independently without further assumptions λ2 = 0.260323 (c) λ2 = 0.324869 (e) Other case studies (d) ... made prior to predictions A class of such test cases that will be reported in the future can potentially be used for the examination of phenotypic data available from hepatitis C virus (HCV) experiments ... 4.2 (a) λ2 = 0.267949 (b) The case study reported in this paper [22] was the first we analyzed with RNAMute Based on the gathered results, we have tried other test cases that require less assumptions...
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Cutting Tools Episode 2 Part 9 ppt
Ngày tải lên :
21/07/2014, 15:20
... replace worn-out grits as the erated • Affordable, more machinable almachining process continues The case for using diamond super ternative to ‘natural’ ceramic plates abrasives rather than conventional...
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Cutting Tools Episode 2 Part 8 potx
Ngày tải lên :
21/07/2014, 15:20
... become an important can often avoid it other hand, bond breakdown should production process, in some cases rebe slow enough so that wheel costs placing conventional grinding operaare not prohibitive ... noted After the proper wheel has figuration variables were discussed in been chosen, wheel life data may be connection with machinability obtained Usually, this can be done In grinding operations ... are good Silicon carbide grit works well, and belt grinding outperforms wheel grinding in many cases www.toolingandproduction.com ...
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