Number | Display cabinet name | Display and display content |
1 | Screw connections and applications | A. The types of threads: coarse thread, fine thread, cylindrical pipe thread, conical thread, and conical pipe thread; Rectangular thread, trapezoidal pattern, serrated thread B. Basic types of threaded connections: ordinary bolt connections (2 types), double headed screw connections, screw connections, and set screw connections C. Standard connectors: double headed bolts, screws, set screws, self tapping screws, hexagonal nuts, round nuts, washers D. Application of threaded connections: loose bolt connections for lifting hooks, cylinder head bolt group connections, and screw hoists E. Anti loosening of threaded connections: counter nuts, spring washers, self-locking nuts; Split pins, slotted nuts, and stop washers F. Measures to improve strength: waist bolt, hollow bolt; Sealing with soft pads and sealing rings; Suspension nut and waist ring bolt connection. |
2. | Hub connection and riveting, welding and bonding | A. Key connection: ordinary flat key connection, semicircular key connection, wedge key connection, tangential key connection B. Spline connection: rectangular spline, involute spline, triangular spline C. Keyless connection types: surface connection, expansion sleeve connection D. Types of pin connections: positioning pins, connecting pins, safety pins, and split pins E. Riveting: lap joint, single cover plate butt joint, double cover plate butt joint. F. Welding: straight fillet weld, lap fillet weld, butt weld, rolled edge weld G. Gluing: Plate joints, cylindrical joints, corner joints, conical and blind hole joints. |
3. | Belt drive | A. Belt drive types: flat belt drive, V-belt drive, synchronous belt drive B. Belt types: round belt, ordinary V-belt, multi wedge belt, synchronous belt. C. V-belt wheel structure: solid type, web type, perforated plate type, spoke type. D. Tensioning device: slide type periodic tensioning, floating pendulum type automatic tensioning, tensioning wheel tensioning. |
4. | Chain drive | A. The types of transmission chains include single row roller chains, double row roller chains, inner guide plate toothed chains, and outer guide plate toothed chains B. Chain wheel structure: integral, orifice plate, ring gear screw connection, variable speed chain wheel C. The motion characteristics of chain transmission D. Chain drive tensioning device: Regular tensioning of tensioning wheel, automatic tensioning of tensioning wheel, tensioning of pressure plate and support plate |
5. | gear drive | A. Basic types of gear transmission: open gear transmission, closed gear transmission 1, and closed gear transmission 2 B. Forms of tooth failure (pictures): tooth fatigue fracture, abrasive wear on the tooth surface, tooth pitting, tooth bonding, and tooth rolling deformation C. Gear tooth force analysis: spur gear tooth force analysis, helical gear tooth force analysis, bevel gear tooth force analysis D. Gear structure: cylindrical gear shaft, bevel gear shaft, solid gear, web type gear, ribbed web type gear, spoke type gear. |
6. | worm drive | A. Worm transmission types: cylindrical worm transmission, toroidal worm transmission, and conical worm transmission& Nbsp< B. Worm force analysis< C. Worm structure form: worm with retraction groove or worm without retraction groove< D. Worm gear structure: ring gear type, bolt connection type, integral casting type, assembly casting type worm gear. |
7. | Sliding bearings and lubrication seals | A. Radial sliding bearings: integral radial sliding bearings, split radial sliding bearings, self-lubricating bearings, multi oil wedge bearings B. Thrust sliding bearings: solid, hollow, single ring, multi ring C. Bearing structure: integral sleeve, rolled bearing, split thick walled bearing, split thin-walled bearing; Shape of bearing oil groove (2 types) D. Lubricating oil cups: straight through pressure injection oil cup, screw cap oil cup, press fit pressure injection oil cup, spring cap oil cup E. Sealing method: contact sealing, non-contact sealing F. Standard sealing components: O-ring, J-ring, U-ring, YX hole sealing ring, YX shaft sealing ring. |
8. | Rolling bearings and device design | A. The main types of rolling bearings include self-aligning ball bearings, thrust self-aligning roller bearings, tapered roller bearings, unidirectional thrust ball bearings, bidirectional thrust ball bearings, deep groove ball bearings, angular contact ball bearings, outer ring cylindrical roller bearings without retaining edges, inner ring cylindrical roller bearings without retaining edges, and needle roller bearings B. Comparison of diameter and width series: Comparison of diameter series; Comparison of width series C. Typical structure of bearings: small bevel gear bearing support 1, small bevel gear bearing support 2, spur gear bearing support, helical gear bearing support, worm bearing support, herringbone gear bearing support |
9. | Structure and Design of Shafts | A. Types of shafts: optical shaft, stepped shaft, crankshaft, hollow shaft, steel wire flexible shaft. B. Positioning of components on the shaft: positioning of the shaft end retaining ring, positioning of the round nut, positioning of the elastic retaining ring, and positioning of the conical surface. C. Structural design of the axis: Step 1 model, Step 2 model, Step 3 model (Scheme 1), Step 3 model (Scheme 2). |
10. | Coupling and clutch | A. Rigid coupling: sleeve coupling, flange coupling 1, flange coupling 2 Flexible couplings: cross slide couplings, cross shaft universal couplings, tooth couplings, elastic sleeve pin couplings, and plum blossom couplings C. Clutches: toothed clutch, single disc friction clutch, multi disc friction clutch, directional clutch. |