Grinding gear rack and milling gear rack are two processing methods used to manufacture racks. There are some significant differences between them in terms of processing technology, precision, surface quality and application. The following is a specific comparison between the two.
1. Processing Technology
- Grinding Gear Rack
The processing is carried out by grinding technology, usually using a grinder.
The tooth shape is processed to the predetermined size and tolerance through high-precision grinding of the grinding tool.
It is usually used to process racks that have been rough-machined to improve accuracy and surface finish.
- Fine Milling Rack
Generally, milling is used, using a milling machine or CNC milling machine.
The tooth shape is formed by cutting on the working surface of the gear rack with a tool with a tooth shape.
Some higher-precision milling processes can also use precision milling cutters and control systems to improve accuracy.
2. Accuracy and Surface Quality
- Grinding Gear Rack
It has higher processing accuracy. Grinding can achieve very high tooth shape and dimensional accuracy, and is often used in high-demand applications.
The surface finish after grinding is high, and a lower Ra value (surface roughness) can usually be achieved.
- Fine Milling Rack
The precision of precision milling is relatively low, but it can improve efficiency in mass production.
The surface finish is relatively lower than that of ground gear racks, but after appropriate process selection, the surface quality of precision milling can also reach a good level.
3. Application Scope of Gear Rack
- Ground Gear Rack
Usually suitable for occasions with very high precision requirements, such as transmission systems, precision machinery, aerospace and other fields.
Suitable for racks with small batches or high precision requirements.
- Fine Milling Rack
More used in general mechanical applications, such as automobiles, heavy machinery, etc., suitable for mass production.
It can be used in occasions with relatively low precision requirements, or as a preliminary processing before other subsequent processing.
4. Cost
- Ground Gear Rack
Due to the complex grinding process and long time, the cost is usually high.
- Fine Milling Rack
The manufacturing time is relatively short, suitable for mass production, so the cost is relatively low.
Summary
The choice of ground rack or precision milling rack needs to be determined according to the specific application requirements, manufacturing budget and production scale. If you need high precision and better surface quality, ground gear racks are a more suitable choice; if production efficiency and cost are more important, milled racks may be more in line with your needs.
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