8头蜗杆蜗轮是指蜗杆上具有8条螺旋线的蜗轮蜗杆传动装置。以下是其生产过程：
蜗杆生产
• 材料选择：常采用高强度的合金钢或碳钢，如40Cr等，部分蜗杆齿面需经渗碳淬火等热处理以获得较高硬度。
• 粗加工：用车床将材料加工成近似形状，去除大部分多余材料，要保证同轴度并留适当精加工量。
• 精加工：采用旋风铣等方法进行更精确的切削，提高生产效率和加工精度，旋风铣分内外旋风两种，精度可达DIN6至DIN7。
• 热处理：对蜗杆进行淬火、回火等热处理，提高材料的硬度和耐磨性。
• 磨削加工：使用磨床对蜗杆进行磨削，进一步提高尺寸精度和表面光洁度，保证螺旋线的精度和齿形的准确性。
蜗轮生产
• 材料选择：一般采用锡青铜，易于磨合和承载，能与钢蜗杆齿运转磨合后增加支承面积。
• 粗加工：在车床上进行粗车，加工出蜗轮的大致外形，包括外圆、内孔等，为后续精加工留余量。
• 滚齿加工：利用定芯夹具定位蜗轮中心，使用特制蜗轮滚刀进行滚齿加工，滚切时滚刀做纯径向滚切，径向进给量为0.03-0.05mm/r。
• 铣削加工：对蜗轮进行铣削，加工键槽等其他部位，保证各部分尺寸和精度符合设计要求。
• 热处理及表面处理：根据需要进行适当的热处理和表面处理，如去应力退火等，提高蜗轮的性能和使用寿命。
最后是装配和调试，将加工好的蜗杆和蜗轮按照设计要求进行装配，确保两者的啮合间隙、中心距等参数符合标准。调试过程中，检查传动是否平稳、噪音是否正常、温度是否过高等问题，对不符合要求的地方进行调整和修复。
An 8-head worm gear refers to a worm gear transmission device with 8 spiral lines on the worm. The following is its production process:
Worm production
• Material selection: High-strength alloy steel or carbon steel, such as 40Cr, is often used. Some worm tooth surfaces need to be heat treated by carburizing and quenching to obtain higher hardness.
• Rough machining: Use a lathe to process the material into an approximate shape, remove most of the excess material, ensure coaxiality and leave an appropriate amount of finishing.
• Finishing: Use methods such as whirlwind milling for more precise cutting to improve production efficiency and processing accuracy. Whirlwind milling is divided into internal and external whirlwinds, and the accuracy can reach DIN6 to DIN7.
• Heat treatment: The worm is subjected to heat treatment such as quenching and tempering to improve the hardness and wear resistance of the material.
• Grinding: Use a grinder to grind the worm to further improve the dimensional accuracy and surface finish, and ensure the accuracy of the spiral line and the accuracy of the tooth shape.
Worm gear production
• Material selection: Generally, tin bronze is used, which is easy to run-in and load-bearing, and can increase the bearing area after running-in with the steel worm gear.
• Rough machining: Rough turning is performed on a lathe to process the approximate shape of the worm gear, including the outer circle, inner hole, etc., leaving a margin for subsequent fine machining.
• Gear hobbing: Use a centering fixture to locate the center of the worm gear, and use a special worm gear hob for gear hobbing. During hobbing, the hob performs pure radial hobbing, and the radial feed rate is 0.03-0.05mm/r.
• Milling: Mill the worm gear, process keyways and other parts, and ensure that the size and accuracy of each part meet the design requirements.
• Heat treatment and surface treatment: Perform appropriate heat treatment and surface treatment as needed, such as stress relief annealing, to improve the performance and service life of the worm gear.
Finally, assembly and debugging are performed. The processed worm and worm gear are assembled according to the design requirements to ensure that the parameters such as the meshing clearance and center distance between the two meet the standards. During the debugging process, check whether the transmission is smooth, whether the noise is normal, whether the temperature is too high, etc., and adjust and repair any areas that do not meet the requirements.
Pls. send me other drawings of worm gear and worn shaft to customize.