Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center 8 doc
Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_1 pot
... cutting conditions found when machining the actual production part. e assessment of a material’s machinability can be undertaken by two groups of tests, these are machining and non-machin- ing ... G-code. Conversely, a ‘non-modal’ G-code will only aect the programmed block in which it appears. Machinability and Surface Integrity 7 Machinability and Surface I...
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Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_2 docx
... technique in conjunction with a strictly controlled and limited ma- chining strategy – based upon some form of ‘orthogo- nal array’ , in combination with the strength (i.e >5% ‘F-ratio’) of parameters ... situation is that surface texture continuously degen- erates, and it is only the burnishing (i.e.‘ironing’) of the surface that ‘masks’ the temporary improvement in mac...
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Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_4 pot
... at high feedrates when high- speed machining. Machinability and Surface Integrity Figure 157. A chatter model, with potential chatter conditions and the application of the ‘stability lobe ... result of energy Machinability and Surface Integrity dissipation – heat transformation, which could result in decreased tool life, with the superu- ous eect of therma...
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Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_5 pdf
... con- dition. Machinability and Surface Integrity Figure 163. Surface texture data- capture, with techniques for the derivation of the arithmetic roughness parameter: Ra. Machinability and Surface ... and position of the honing stroke, the hon- ing stick pressure (Vc). e inclination angle of the cross-hon- ing action, is a product of the up-/down-ward head motion (...
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Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_7 ppt
... ‘T’. NB is rate of heat generation only exists within the primary and secondary deformation zones. By way of example of how the temperature genera- tion/distribution occurs in orthogonal cutting, ... disappear and at the region of the tool (i.e. insert) only the conduction term remains. ∴ Rate of heat generation (˙q) = σ ˙ε Where: ‘σ’ was obtained from an emprical function o...
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Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_8 doc
... deformation – occurs when high pressures (i.e. compression) are exerted on the cutting edge in combination with elevated temperatures. Con- ditions likely to create plastic deformation on the ... of tool/workpiece anity associated with tem- Machinability and Surface Integrity • good quality and consistent workpiece material is to be utilised; • that the condition...
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Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_9 docx
... application of the above equation for practical machining operations, due to the vast amount of machining data that is necessary to determine the parameters of this equation – producing considerable ... forming forces with very high- frequency acoustic emissions (AE). e application of AE in association with other Figure 177. The correlation of typical manufacturing c...
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Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_10 ppt
... brief resumé of just one of these ‘orthogonal models’ shown in Fig. 181 will be mentioned below, together with a concise review of friction in metal cutting operations (Fig. 182 ) will be presented, ... thrust force component, • F C = cutting force component, • F N = normal force component on the shear plane, • F S = shear force component on shear plane, • R = resul...
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Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_11 pot
... 186 . The eects of residual stress and deformations of a workpiece by machining. [After: Brinksmeier et al., 1 982 ] . Machinability and Surface Integrity Figure 185 . The cross-section of ... 7.10 Surface Integrity of Machined Components – Introduction Previously in Section 7.5 concerning machined sur- face texture, the discussion was principally concerned with...
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Machining of High Strength Steels With Emphasis on Surface Integrity by air force machinability data center_12 pptx
... Chapter Figure 189 . The inuence of the cutting edge’s condition on the resultant machined surface integrity . Machinability and Surface Integrity condition degrades the functional performance, ... region extends to quite a small depth beneath the surface, in the region of 10 to 100 µm, de - pending upon the severity of the ‘abusive regime’ of surface generation...
Ngày tải lên: 21/06/2014, 22:20