Hitachi Zosen Fukui Corporation.
①Improve productivity
①Improve productivity
| 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
|
[Example of productivity Improved]
| 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)
|
②Improve maintainability
②Improve maintainability
| Item | Mechanical drive | Servo drive |
| Structure image | 
*Red color parts are not required by adopting servo unit.
|
 |
| 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
|
③Running cost
③Running cost
| 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
|
Note：It may be necessary to update power supply equipment of customer’s plant.
1-8-28, Jiyugaoka,
Awara-city, Fukui-pref.,
919-0695, Japan
TEL +81-(0)776-73-1220
919-0695, Japan
TEL +81-(0)776-73-1220
FAX +81-(0)776-73-3055
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・Servo Press
・Mechanical Press
・Automation equipment
・Control equipment
・After-sales Services
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