Hello Everyone
We have got a HMC , to do boring on two different diameters of connecting rod
We are having waviness issue in small bore
As shown in PPT, there are 3 components loaded on locations A, B, C of fixture, while waviness on A is by and large within limits barring few cases, generally it is out for B and C
Please find couple of actions from our side thus far related to fixture
1. Accumulator charged to 85 bars to ensure adequate clamping pressure of components
2. Rest pads checked and ensured tightness. Blue seating of brass rest pads checked and found ok – although we have no issues with regard twist and bend.
3. Replaced locator for fixture B
4. In the original program, at the end of boring, spindle moves to 180 deg then retracts, blocked this block and retracted in feed till boring bar leaves component
5.Boring bar replaced with new one, Feed rate reduced from 126mm/min to 100 mm/min
6. Dia of small bore is 40.026 for length of 40mm, whereas dia of big bore is 73
7. Coolant pressure, tool clamping pressure found alright
8. Axis Z1 is master having linear scale along with direct motor encoder with it, Axis Z2 is slave with only direct motor encoder
Request your advice to overcome Waviness of small bore
Regards
The measurements for the small bore diameter, which is 40 mm slope game in length, are 40.026, and the big bore diameter is 73.