How are spiral tooth profiles produced through milling and grinding?
Release time:
2025-01-14
The milling and grinding processes of spiral tooth profiles require precise calculations, appropriate tool and grinding tool selection, and strict process control. Through these steps of processing, helical gears that meet the design requirements can be obtained.
Spiral tooth profile is processed through processes such as milling and grinding. The specific processing steps are as follows:
1、 Milling processing
Tool selection:
When milling helical gears on a universal milling machine, disc-shaped milling cutters are usually used. The selection of cutting tools is not based on the actual number of teeth of the gear, but on the equivalent number of teeth (or imaginary number of teeth). This is because the tooth groove of the helical gear is a helical groove, and during milling, the worktable needs to rotate a helix angle to make the rotation plane of the milling cutter consistent with the direction of the tooth groove.
The calculation of the equivalent number of teeth takes into account factors such as the actual number of teeth and helix angle of the helical gear. Select the appropriate milling cutter based on the calculated equivalent number of teeth.
Milling process:
Before milling, it is necessary to check the size, geometric accuracy, and mutual positional accuracy of the gears.
Calculate the lead, hanging wheel, indexing, etc. based on the parameters of the helical gear, and install and adjust the indexing head.
When milling, the milling cutter cuts on the gear blank according to the predetermined trajectory, forming a spiral tooth shape. Due to the helical groove of the helical gear, the worktable needs to be rotated according to the helix angle during the milling process.
2、 Grinding processing
Preparation before grinding:
Before grinding, it is necessary to perform heat treatment on the helical gear to improve its hardness and wear resistance. After heat treatment, there may be some deformation on the gear tooth surface, so precision machining is needed to correct these deformations.
When grinding, it is necessary to choose suitable abrasives and grinding tools. Abrasive is usually a mixture of small abrasives and lubricants used to remove very small amounts of metal during the grinding process.
Grinding process:
During the grinding process, the grinding tool (such as the grinding wheel) slides relative to the tooth surface of the helical gear, relying on the relative sliding generated by the meshing of the tooth surface to push the abrasive particles for cutting.
During grinding, it is necessary to continuously spray grinding agent between the tooth surfaces to ensure a smooth grinding process. At the same time, it is necessary to control the pressure and time of grinding to avoid excessive grinding causing damage to the tooth surface.
Through multiple grinding and correction, a spiral tooth profile that meets the design requirements can gradually be obtained. The ground tooth surface has lower roughness and higher accuracy.
Teeth grinding technology:
For complex tooth profiles such as bevel gears, gear grinding technology is widely used in precision machining processes. Grinding is a process of using grinding to remove a very small amount of metal, which is completed by the speed and force related to the relative sliding of the tooth surface.
During the tooth grinding process, it is necessary to continuously adjust the installation position and angle of the grinding tool to ensure that the entire tooth surface can be uniformly ground. At the same time, it is necessary to control the injection amount and grinding time of the abrasive to achieve the best grinding effect.
In summary, the milling and grinding processes of spiral tooth profiles require precise calculations, appropriate tool and grinding tool selection, and strict process control. Through these steps of processing, helical gears that meet the design requirements can be obtained.
德帕精密螺杆
Recommend News
Telephone:0510-85997271
Mobile:150 2119 1772(Same as WeChat)
Mailbox:jerryhe@woyo.cn
Contact person: manager he
Address: No.5 Chang Kang Road, Mashan Advanced Manufacturing Park, Binhu District, Wuxi City, Jiangsu Province
Copyright © 2025 Depa Precision Screw (Wuxi) Co., Ltd www.300.cn
