Gear machining process

Gear machining processRoughly go through the following stages:

Blank heat treatment-tooth blank processing-tooth profile processing-tooth end processing-tooth surface heat treatment-fine datum correction and tooth profile finishing, etc.

Specifically, the gear processing process is mainly divided into the following 4 stages:

XNUMX. The first stage of gear processing:

1. This stage is the stage where the tooth blank initially enters the machining process.

2. Since the transmission accuracy of the gear is mainly determined by the accuracy of the tooth profile and the uniformity of the tooth pitch distribution, this is directly related to the accuracy of the positioning reference (hole and end surface) used when cutting the tooth.

3. This stage is mainly to prepare precision benchmarks for the next stage of processing the tooth profile, so that the accuracy of the inner hole and end face of the tooth basically meets the specified technical requirements.

4. However, the processing of secondary surfaces other than the tooth profile should also be completed as much as possible in the later stage of this stage.

XNUMX. The second stage of gear processing is tooth profile processing:

1. For gears that do not need to be quenched, this stage is generallyGear processingIn the final stage, after this stage, gears that fully meet the requirements of the drawing should be machined.

2. For gears that need to be hardened, the tooth profile accuracy that can meet the final finishing requirements of the tooth profile must be machined at this stage. Therefore, the processing at this stage is the key stage to ensure the gear machining accuracy, and everyone should pay attention to it.

XNUMX. The third stage of gear processing is the heat treatment stage:

At this stage, the main quenching treatment is applied to the tooth surface to make the tooth surface reach the required hardness.

XNUMX. The final stage of gear processing is the finishing stage of the tooth profile:

1. The purpose of this stage is to correct the tooth shape deformation caused by the quenching of the gear to further improve the tooth shape accuracy and reduce the surface roughness, so that it can meet the final accuracy requirements.

2. At this stage, the positioning reference surface (hole and end surface) should be trimmed first. Because the inner hole and end surface of the gear will be deformed after quenching, if such a hole and end surface are directly used as a reference for tooth profile precision after quenching Machining is difficult to meet the requirements of gear accuracy.

3. The tooth profile finishing is performed by positioning the trimmed reference surface, which can make the positioning accurate and reliable, and the margin distribution is also relatively uniform, so as to achieve the purpose of finishing.

The above is the description of the gear processing process that I shared with you today, including but not limited to, for more content or related needs, you can consult EP Precision Gear Processing for free.