2. Machine tool modeling. Presentation

Figure 2 - Specific cutting pressures (tangential KT and repulsive K R ) for a 600 MPa steel (60 daN /mm2) and a cutting speed Vc &#61; 120 m /min (from Russian standards)

Figure 3 - Conventional machine tools: force path

Figure 4 - Two-dimensional elastic machine model

Figure 5 - Special machine spindle

Figure 6 - Influence of synchronous bearing defects on a machined bore

Figure 7 - Circularity error mitigation. Spindle gain

Figure 8 - Model of a spindle subjected to a cutting force

Figure 9 - Representative curve of the function F1 , derivative of the deflection at the tool in relation to the distance L between bearings

Figure 10 - Spindle example (SKF)

Figure 11 - Echelon of materials and transitional regimes

Figure 12 - Projected cutting length L cp

Figure 13 - Spindle with front bearings preloaded by dimensional interference (SKF)

Figure 14 - Boring spindle. Elastic preload bearings (Renault)

Figure 15 - Graph of temperature and torque versus time for the spindle shown in figure . Speed range 0-6,000 rpm

Figure 16 - Universal milling spindle drive shaft

Figure 18 - Temperature vs. time of a spindle with bearings preloaded by dimensional interference

Figure 19 - Thermal instability. Elimination of the time variable

Figure 20 - Turning center headstock

Figure 21 - Spindle shaft for turning center

Figure 22 - Spindle. Turning roughing pick-up

Figure 23 - Elimination of threads on a spindle (ring with rough-turned groove)

Figure 24 - Flexible spindle shaft workshop

Figure 25 - Spindle body

Figure 26 - Part that can be machined in one clamping by a 4-axis machining center

Figure 27 - Rotation of C axis motor

Figure 28 - Single socket

Figure 29 - Spindle with bearing housing thermally decoupled from the spindle body

Figure 30 - Robot head or wrist with 3 rotary axes (Renault ACMA)

Figure 31 - Robot architectures

Figure 32 - Machine frames: sections

Figure 33 - Structures: recommendations for frame design by a foundry

Figure 34 - Structure: other design recommendation extracts

Figure 35 - Improved structure

Figure 36 - Parallelepiped frame

Figure 37 - Deflection at the center of the frame as a function of height: case study a

Figure 38 - Single-supported frames: variation in deflection as a function of B

Figure 39 - Arrow at the center of a frame as a function of width: case study a

Figure 40 - Gain in rotational rigidity of slides (Jacques MIAUTON study)

Figure 41 - Special machine frame: cross-section

Figure 42 - ZB cart: 2nd socket showing 1flanges socket

Figure 43 - Machining not initially taken into account

Figure 44 - V-guides

Figure 45 - Prismatic slide

Figure 46 - Rolling-body slide (Doc. Schneeberger)

Figure 47 - Hydrostatic slides

Figure 48 - Hydrostatic skid pocket with seal

Figure 49 - Frequency response of a hydrostatic slide carriage with pocket depth parameter (mm)