Items | Mechanical drive | Servo drive |
Operation
speed
|
×: High speed operation is not possible by backlash due to aging.
|
〇: Reduce backlash by renewal. Maximum acceleration and maximum speed will be improved.
|
Motion |
×: Set in the worst condition of all parts. Cannot be changed after completion.
|
〇: Optimum motion for parts will be set and selected.
|
Short-stop |
×: Vibration and wear caused by backlash causes
- Many mis-grips.
- Many Feed bar connect/dis-connect errors.
|
〇: Vibration and wear are improved by renewal,and short-stop will be reduced.
|
Deterioration over time |
×: Many backlash factors (Such as gears)
Increase vibration
Increase noise
|
〇: Reduce parts that cause backlash
Reduce vibration → Stable transfer
Reduce noise → Improve working environment
|
Customer-A (TR renewal) | Customer-B (TR and DF renewal) |
Before : 950 GSPH
|
Before : 12.3 SPM
|
↓
|
↓
|
After : 1100 GSPH (15%UP)
|
After : 18.4 SPM (50%UP)
|
Item | Mechanical drive | Servo drive |
Structure image | ![]() *Red color parts are not required by adopting servo unit.
|
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Special parts |
×: Many (Such as cams, gears)
Expensive fabrication cost
Long lead time
|
〇:Few(Adapt manufacturer’s standard parts)
Low cost
Short lead time(Easy to get)
|
Drive part replacement work |
×:(Require experienced skill)
|
〇:Easy to replace
|
Trouble shooting |
×:Require long term production stop
|
〇:Easy
|
Item | Mechanical drive | Servo drive | |
Lubrication |
Refueling amount
Filing amount
Greasing point
|
×: Many
|
〇: Few
Reduce lubrication cost
|
Operating oil |
Oil amount (for cam-shift, etc.)
|
×: Many
|
〇: Almost none
Reduce operation oil cost
|
Air |
Initial filling amount
Consumption (Such as cam restriction cylinder)
|
×: Many
×: Many
|
〇: Many
〇: Almost none
Reduce primary side air consumption
|
Maintenance cost |
Consumable parts
Spare parts
|
×:Expensive
|
〇:Low cost
|