Helical Gear Hobbing Machine Technical Parameters
Helical Gear Hobbing Machine is a special machine for cutting straight teeth with a helical cutting edge. It has a wide range of applications in the processing of cylindrical gears and worm gears. This paper mainly introduces the main technical parameters and characteristics of helical gear hobbing machine.
The main technical parameters of helical gear hobbing machines include: the maximum diameter of processed gears, the maximum modulus, the maximum length of processed gears, the minimum and maximum number of teeth, the speed of the main shaft, the speed of the hob shaft, the speed ratio of the hob and the main shaft, the maximum hobbing travel, the maximum radial movement of the hob, the maximum processing length of the worm, the maximum diameter of the worm, the number of hobbing tool holders, the type of hobbing tool holder and the type of coolant pump.
1. The maximum diameter of the processed gears is usually referred to as the maximum diameter of the helical gear hobbing machine. The precise value of this parameter should be in accordance with the product requirements and the man-made conditions. It depends on the hobbing tool size, the maximum transmission power and the material characteristics of the processed gears. Generally, the maximum diameter of the processed gears should not exceed 540mm.
2. The maximum modulus usually refers to the maximum pressure ratio of the helical gear hobbing machine. Most machines are designed to process gears with a pressure ratio of up to 8. Therefore, if the workpiece has a greater pressure ratio, the machines parameters should be adjusted.
3. The maximum length of the processed gear is the length of the gear hobbed on the machine. This parameter is related to the length of the hob and the coaxiality accuracy between the hob and the gear blank. Generally speaking, the maximum length of the processed gear should not exceed 500mm.
4. The minimum and maximum number of teeth refers to the minimum and maximum number of gear teeth that can be processed by the machine. Generally speaking, the number of gear teeth should not exceed 30.
5. The speed of the main shaft and the hob shaft refer to the rotational speed of the workpiece and the hob in the helical gear hobbing machine. The accurate speed value should be determined according to the hobbing tool size and the processing materials. Generally speaking, the main shaft can reach 3000 ~ 8000rpm, and the hob shaft can reach 30 ~ 5000rpm.
6. The speed ratio of the hob and the main shaft is the proportion of the speed between the hob and the workpiece. The correct speed ratio can ensure the uniformity of the tooth processing. Generally speaking, the ratio should be in the range of 1:20~1:50.
7. The maximum hobbing travel is the maximum distance that can be processed by the hob in the helical gear hobbing machine. It is usually determined by the length of the ram. Generally speaking, the maximum hobbing travel should not exceed 1000mm.
8. The maximum radial movement of the hob is the maximum distance of the hob movement in a radial direction during the hobbing process in a helical gear hobbing machine. It is related to the ram stroke, the accuracy of the collet, the speed of rotation and the processing diameter. Generally, the maximum radial movement of the hob should not exceed 100mm.
9. The maximum processing length of the worms refers to the maximum length that can be processed by the helical gear hobbing machine. The value of this parameter should be determined according to the product requirements and the man-made conditions. Generally, the maximum processing length should not exceed 500mm.
10. The maximum diameter of the worm refers to the maximum diameter of the worm that can be processed by the helical gear hobbing machine. The value of this parameter should be determined according to the product requirements and the man-made conditions. Generally, the maximum diameter should not exceed 200mm.
11. The number of hobbing tool holders is an important parameter for the helical gear hobbing machine. It should be determined according to the processing requirements and the number of tools that can be used. Generally, the number of tool holders should not exceed 4.
12. The type of hobbing tool holder refers to the type of tool holder used in the helical gear hobbing machine. It is related to tool selection, manufacturing accuracy and hob cutting accuracy. Commonly used tool holders are: manually operated, radial, threaded and inclined shaft.
13. The type of coolant pump is an important parameter to ensure the lubrication of the helical gear hobbing machine. Commonly used pumps include oil pumps, air pumps and water pumps.
In conclusion, the above-mentioned are the main technical parameters and characteristics of the helical gear hobbing machine.Under the guidance of these parameters, users can select and accurately use the machine according to their actual needs, so as to ensure the accuracy, efficiency and reliability of the machining process.
