"Mechanical drawing" teaching display case "Mechanical drawing" teaching display case is suitable for fulltime general secondary school, worker middle school, television middle school, vocational high school mechanical major drawing teaching, but also can be used for other similar majors or reference. In order to highlight the main line of cultivating students' drawing ability and viewing ability, the theoretical study, use scope of mechanical students to enhance their understanding and deepen their understanding, this showcase is an ideal set of equipment to improve the quality of teaching. ( Teaching Equipment  Teaching Instruments )
Serial number and name  Model contents in the showcase  The first cabinet: basic knowledge and tools of drawing  (1) List of Roman numerals (2) Example of Arabic numerals (3) Example of Latin alphabet (4) Title bar, detail column (5) Proportion (6) Font (GBT 1469193) Basic requirements (7) Long imitation Song Examples of Chinese characters (8) Drawing format and size (9) Frame format (10) Triangle ruler (11) Triangular scale (12) Circular protractor (13) Multifunctional template (14) Compasses  The second cabinet: point, line, plane projection  Trihedral projection of points, trihedral projection of straight lines at general locations, line segment real length and inclination angle α, vertical side, horizontal plane, oblique projection and orthographic projection Trace points of a straight line, characteristics of plane projection, trace plane, center projection method, projection characteristics of points on a straight line, projection characteristics of line segments Projection of the four subangle midpoints  Third cabinet: relative positions of points, lines, and planes  Orthogonal projection theorem, projection of two intersecting straight lines, using the agglomeration of the projection to find the point of intersection of the straight line and the plane, using the auxiliary surface method to find the point of penetration of the line and the plane, and using the agglomeration of the projection to find the line of intersection of the two plane , The projection of the circle on the vertical plane, the analysis of the relative position of the line on the solid surface and the projection, the projection of the intersection of two lines, the projection characteristics of the two lines that intersect, the use of the auxiliary line method to find the point of intersection between the line and the plane, Projection of the intersection of the position plane and two parallel lines  The fourth cabinet: projection transformation  Two basic methods of projection transformation (facechanging method), two basic methods of projection transformation (rotation method), point rotation around positive and vertical axis, general position linear transformation to new projection surface vertical line, general position linear transformation to projection Plane parallel lines, normal position straight lines are transformed into parallel lines of the new projection plane, general position planes are transformed into new projection planes parallel planes, general position planes are transformed into new projection planes perpendicular planes, normal vertical planes are transformed into projection plane parallel planes, points The second transformation of the plane, the parallel line of the projection plane becomes the vertical line of the projection plane, find the distance from point A to the P plane, and the foot K of the perpendicular line made by point A to the P plane.  Fifth Cabinet: Curves and Surfaces  Curved solid twosided projection example (inclined cylinder), curved solid twosided projection example (slanted cylinder), curved solid twosided projection example, curved solid twosided projection example (a quadrangular prism with a quarter cylindrical groove in the upper left corner) ), Twodimensional projection example of curved solid (oblique cone), twosided projection example of curved solid (oblique cone), twosided projection example of curved solid (upsidedown circular table), twosided projection example of curved solid (with half a circular table) Grooved semicylinder), curved twodimensional projection example (cylinder with hemispherical groove), curved threedimensional projection example (combined revolution body example 1) Example of a twodimensional projection of a curved solid (example of a combined revolution body), the intercept line of the head of the connecting rod, the projection of the intercept line of the vertical plane piled spheres Curve formation, space curve, formation and projection of curved surface Formation of singleleaf hyperbolic revolution surface, torus surface, intercept line of thimble  Cabinet Six: Intersection and Intersection  Hemispherical grooving projection, notched triangular pyramid, cylindrical slotted projection Projection of slotted hollow cylinder, 2 interception lines, projection of boring bar head, joint projection, jack cover projection, 5 sections of inertia line  Seventh Cabinet: Intersecting Lines  Orthogonal twocylindrical intersecting line, orthogonal twocylindrical intersecting line, using the spherical method to find the intersecting line of a cylinder and a cone, the intersecting line of two orthogonal cylinders Intersecting line of drilling on a cylinder and two cylindrical holes, intersecting line of drilling on a cylinder and two cylindrical holes, intersecting line of two intersecting cylinders, intersecting line of a truncated cone and a hemisphere, orthogonal of a cylinder and a cone Special cases of intersecting lines of two cylinders, intersecting lines of diagonally intersecting cylinders, orthogonality of cylinders and cones, intersecting lines of two cylinders whose axes do not intersect, unequal diameters, intersecting lines of intersections of cylinders and hemispheres Intersecting lines of cylinders, tables and spheres  Eighth cabinet: surface intersection  Analysis of the projection of the cylinder and the point on the surface, the projection of the cone and the point on the surface, the projection of the hexagonal prism and the point on the surface, and the analysis of the midplane of the shape , Spherical projection and points on the surface, circular projection and points on the surface, projection of special gaskets, projection of a pentagon and points on the surface, surface intersection model 22 pieces  Ninth cabinet: combination  82 ： Combination method of combination body (2 pieces), 83: Coplanar and noncoplanar surfaces (2 pieces), 84: Coplanar and noncoplanar inner surfaces (2 pieces) 85: Tangent to the outer surface, 86: Tangent to the inner surface, 88: the plane intersects the curved surface, 89: the two surfaces intersect, 811: Analysis of bearing housing and its shape, 813: Block, 815: Connect several views (4 items) 817: bracket, 821: pressure plate, 830: Strive for novel shape design (3 pieces), 833: Combination composed of superposition, 835: Combination composed of cylindrical cutout, 836: Integrated composition  Tenth cabinet: parts Expression method  91: basic projection surface, 95: partial view, 96: Partial view of symmetrical objects, 97: Oblique view, 99: Sectional view, 911: Full sectional view, 912: Half sectional view (1), 913: Halfsection view (2) 914: partial sectional view, 916: single oblique section 917: full sectional view of stepped section, 918: half sectional view of stepped section 919: partial crosssectional view of stepped section, 922: two intersecting section planes, 923: Cases where incomplete elements are generated by rotation section, 924: Compound section, 925: Use sections to express structures such as shafts and keyways, 928: Sectional view when the section is separated, 929: removed crosssectional view cut out by two intersecting cutting planes, 934: Painting with the same structure 935: Drawing of porous structure, 936: Simplified drawing of ribs and holes (2 pieces), 937: Simplified drawing of uniform holes on the flange, 940: Simplified drawing of the ellipse  Eleventh cabinet: parts drawing  111: plunger sleeve, 113: pump shaft, 114; end cover, 115: bracket, 117: box, 1154; Worm gear reduction box and valve body Flange plate, cone tube, cylinder block, hand wheel, shaft bracket, bracket Lathe tailstock hollow sleeve, disc  Twelfth cabinet: parts drawings, gears, keys, springs  1029: Spur gear transmission, 1029: Bevel gear transmission 1029: Worm gear transmission, 1028: Involute spline connection drawing Table 106: Ordinary flat keys, Table 106: Semicircle keys Table 107: cylindrical pin, table 107: conical pin Table 107: Split pin, Table 1011: Compression spring Table 1011: Tension spring, Table 1011: Torsion spring Table 1011: leaf spring, table 1011: scroll spring 1037: Parts drawing of spur gear, 1042: Parts drawing of bevel gear 1044: worm parts drawing, 1045: worm gear parts drawing  Thirteenth Cabinet: Assembly Drawing Expression method  Ball valve (2 pieces), oil pump, gear oil pump (2 pieces), milling head (2 pieces), oil pump (2 pieces)  Fourteenth Cabinet: Assembly Picture reading  Plain bearings, gear pumps, cocks, levers, micromovements, Machine vise, bench vise, reducer  Fifteenth cabinet: standard parts  105: drawing method of external thread, 106: drawing method of internal thread 107: Machining internal thread, 108: Partial thread drawing 109: Drawing of intersecting lines in threaded holes, 1010: painting method of thread connection, 1014: bolt connection 1014: screw connection, 1014: double head stud connection Table 103: Hex head bolts, Table 103: Double head studs Table 103: Slotted cylinder head screws, Table 103: Slotted countersunk head screws, Table 103: Slotted pan head screws Table 103: Slotted flatend set screws, Table 103: Type Ⅰ hex nut Table 103: Flat washer, Table 103: Spring washer  Cabinet Sixteen: Exercise Model  Total: 30 items 
