第五章 Representations：Usually, machine parts are complicated and various in actual projects.It is impossible to use the three views only introduced before to represent them clearly and completely.Therefore, other more representation methods are introduced in this chapter, such as other views,sections,cuts and so on, All the drawing methods are prescribed by national standards which must be followed.5.1Principle Views and Other Views:In this part we learn the principle views, partial views and oblique views.[单选题]How much is the inclined angle of hatching for the commonly used metallic material
5.2Section Summarization:Sectional views are drawn to express the internal structures of a complex object, to clarify internal details.
5.3Full Section:In this part we introduce the drawing method of sectional views and full section.
5.4Half and Local Section:In this part we learn the half and local section.A half-section is a view that to show half external and half internal features at the same time.The local section shows the internal detail and is separated by an irregular boundary.
5.5Cutting Plane Sorts:In this part we learn the cutting plane sorts, include single cutting plane, several parallel cutting planes and several intersection cutting planes.
5.6Cuts:When an assumptive cutting plane is passed through an object, the cross section is drawn, which is called a cut.
5.7Other Representations:In this part we learn other representations, include the partial enlargement, representation of rib,conventional representation and simplified representation.
5.8Comprehensive Representation:In this part we talk about the comprehensive representation, and introduce the representation principles.
选项:[30°, 45°, 90°, 60°]
[判断题]An object be represented as local section in the condition that both the outside and inside are complex, and its structure is not symmetry选项:[对, 错]
[判断题]When a cutting plane pass through symmetric position of a rib, there should be no hatching on the area of the rib.选项:[对, 错]
[判断题]Superposition cut is represented as thick line and is put inside the original view选项:[对, 错]
[判断题]When a cutting plane pass through the symmetric position, the labeling location symbols can be omitted.选项:[对, 错]
[判断题]The position of labeling the name letters for a sectional view should be above its view选项:[对, 错]
[判断题]when several parallel cutting planes are used to cut, there will be a bold line at the corner of turning point.选项:[错, 对]
[判断题]The arrow head can be omitted when the cut structure is symmetry,选项:[对, 错]
[判断题]The cut is represented only on the croosection, but the section is represented for all the visible outlines选项:[对, 错]
[判断题]When a inclined cutting plane is used, the inclined sectional view can be rotated at an angle of less than 45°.选项:[错, 对]
温馨提示支付 ￥1.00 元后可查看付费内容,请先翻页预览!
