The main processes are:
- Boring gear coupling shaft sleeve hole, cutting and dressing of keyway.
- Rough machining of upper teeth of inner and outer ring and finishing of teeth.
- Drilling holes and reaming holes on the flanges of the two inner gear bushings.
- Check the balance of coupling.
The boring and keyway machining of the gear coupling is the same as that of the flange coupling, and then the end face and other surfaces are machined.
I: Gear processing method
GIICL Gear coupling gear processing is according to its structure, shape and workshop equipped with machine tools and other conditions. Decide what method to use processing. gear processing methods such as some in the universal milling machine milling gear processing. Some hobbing machine gear processing, and in the slotting machine gear processing. Usually, the outer teeth are processed by milling or hobbing, and the inner teeth are processed by shaper.
gear processing is a complex special technology, processing is correct or not. Inner and outer gear indexing circle center line and axis center line concentricity and gear contact is important. In order to improve the precision of the gear, the gear should be shaved. Surface gear is generally subjected to surface hardening heat treatment such as quenching, which can improve the hardness of the working surface, but also maintain good impact toughness inside the gear gear.
After quenching, the gear will inevitably deform and reduce the precision of the gear. Surface hardness gear is very high, so we can only use honing, grinding or grinding to improve the precision. At present, gear coupling widely used in high speed rotating machinery requires high machining accuracy of teeth.
II:Processing method of bolt hole
After gear is processed, the bolt hole can be drilled on the flange of the inner gear shaft sleeve. Then two inner gear shaft sleeve flanges are connected together to ream bolt hole, and check match of the bolts used in coupling, generally for the transition match. After processing, should do a good job of the coupling between the parts of the mark. Of course, some coupling manufacturers, in order to adapt to the requirements of batch production, not the coupling flange pair drilling, hinged. But to the sample mold as the benchmark, with bolt hole flange connection, this method is called drilling.
III:Dynamic balance test requirements
Gear couplings used for high speed machinery, must carry out the balance of the coupling inspection, so in the gear coupling after processing, to carefully do the static balance test and the overall dynamic balance test.
Dynamic balance test is to set the coupling on a special mandrel, the manufacturing accuracy of the mandrel and the surface finish of the journal must meet the specified requirements. Unbalance phenomenon of the coupling is generally used to eliminate the weight method.
Finally, the most important point in full gear coupling or half gear coupling processing is to ensure that the center line of the shaft sleeve hole of the coupling and shaft center line high concentricity. Ensure that the end face and shaft center line vertical. In this way, after coupling is aligned, center line of the two shafts can also be aligned.