This design is a welding roller frame, which is suitable for assembly and welding of cylindrical workpieces. The machine consists of a driving roller frame and a driven roller frame. The distance between the two roller frames can be adjusted according to the weight and length of the workpiece, and the rollers can adjust themselves according to the weight and diameter of the workpiece. The principle of the whole machine is that the motor is the power source, which is transmitted to the driving roller through the four-stage gear reducer, and the welding workpiece is driven to rotate through the friction between the roller and the workpiece, thus realizing the welding displacement requirements. Because of its low cost, convenient use and strong adaptability to workpieces, it is a necessary machine for small and medium-sized enterprises.
This topic mainly uses Pro/E for 3D design, and Pro/E is the most widely used CAD software for 3D design at home and abroad. Among them, Pro/E has powerful parametric modeling function of surfaces and solids, and has certain advantages in 3D design of solids.
The welding roller frame designed in this paper is a combination of driving roller frame and driven roller frame. It is most suitable for welding cylindrical workpieces with large wall thickness and good rigidity. In the flash, the driving roller frame drives the workpiece to rotate at one end of the cylinder. However, due to the good rigidity of the workpiece, the rotation speed can still be kept uniform and there will be no distortion. The welding roller frame I designed this time has the advantages of low cost, convenient operation and low technical requirements for ten people, and is suitable for small and medium-sized factories and mines. The roller frame I designed is 200 tons. Because of the large tonnage, this kind of roller frame is currently used in China: it is mainly used in large petrochemical industry, power station equipment and vertical equipment manufacturing industry. The main features of this roller frame are: 1 non-self-adjusting roller frame, and the distance between rollers can be adjusted by moving the roller seat on the bracket. 2. A positioning device is arranged on the roller swing frame to fix the left and right groups of rollers at the same position. 3. The welding roller frame can determine the distance between the driving roller frame and the driven roller frame according to the length of the workpiece, which is convenient to adjust. 4. Driven by DC motor, stepless speed regulation.
catalogue
Abstract 1
Abstract 1
Foreword 2
1, determination of design scheme 5
2. Known technical data 6
3. Scheme determination 6
3. 1. The transmission scheme is as follows: 6.
3.2. Transmission ratio distribution: 6
4. Motion and dynamic parameters of transmission device 7
5, the design of the four-stage reducer 8
5. 1, calculation of main parameters and geometric dimensions of ordinary cylindrical worm drive 8
5. 1. 1. Modulus m and pressure angle α8
5. 1.2. Diameter of worm indexing circle D 1.8
5. 1.3. number of worm heads Z 1.8
5. 1.4. Advance angle Y 9
5. 1.5. transmission ratio I and transmission ratio u 9
5. 1.6. Number of teeth of worm wheel z2 9
5. 1.7. Standard center distance of worm drive a 9
5. 1.8. Structural design of common cylindrical worm and worm wheel 12
5. 1.9. 12 structural dimension calculation of reducer
5. Structural design of1.10.45438+03 axis
5.2 design of transmission gear (high speed gear) 15
5.2.3. Design according to the bending strength of tooth root 16.
5.2.5. Checking calculation 17
5.2.6. Design of17 Axis
5.2.7. Structure and Assembly of Shaft 18
5.2.8. Inspection of shaft 18
6. Design of welded roller frame underframe 19
Feeling after design 20
Reference 2 1 The above answer comes from:/html/44-3/3070.htm.