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Uploaded: 04.07.2020
Content: Метрология 21 вариант.doc 387,5 kB
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Product description

Task 1
Tolerances and fitments of smooth cylindrical joints
For a smooth cylindrical joint h6/f6 with a nominal diameter D = 72 mm, determine:
1. The size limit.
2. Tolerances.
3. The highest, lowest and average gaps.
4. Fit tolerance.
5. Executive sizes of limit calibers.
The location of the tolerance fields is shown graphically.
Task 2
Rolling bearing tolerances and fitments
For single-row radial bearing to build the schema location of tolerance zones with the indication of deviations. Loading-circulation. The shaft is solid.
Source data:
1. Accuracy class – 5.
2. the bearing Number is 301.
3. Radial load R = 1000 N.
4. the nature of loading - with strong shocks and vibration.
Task 3
The calculation of dimensional chains
According to the specified nominal size values and tolerance fields of all component links (A1 = 100H11, A2 = 20H10, A3 = 3h8, A4 = 110h11) we determine the nominal value, limit deviations and tolerance of the closing link A in conditions of complete interchangeability.
Task 4
Tolerances and fitments of threaded connections
Determine the maximum dimensions of all elements of the metric thread M30,7-5G/6h and build a diagram of the location of the tolerance fields of the bolt and nut.
2. the Maximum deviations of thread diameters (in microns) are determined according to GOST 16093-81 (table 4.29 [1]):
Task 5
Spline connection tolerances and fitments
For a movable splined joint with a nominal size of 61620, select the centering surface, select the fit, and build diagrams of the connection tolerance fields for all elements.
The loading pattern is moderate. The spline connection works with increased centering accuracy. The bushing is heat-treated.
Task 6
Keyway tolerances and fitments
For a key connection (prismatic key, version A, free connection), determine the tolerances and limit sizes of all connection elements, as well as give the layout of the tolerance fields for the width of the key b and the Assembly drawing of the key connection.
Shaft diameter d = 142 mm, key length l = 360 mm.

Additional information

Metrology 21 options


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