Mitsui Surface Grinder: Difference between revisions
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|model=Mitsui 250MH | |model=Mitsui 250MH | ||
|arrived=Late 2016 | |arrived=Late 2016 | ||
|doesitwork= | |doesitwork=no | ||
|contact=Dean Anderson | |contact=Dean Anderson | ||
|where= | |where=Removed | ||
|certification=yes | |certification=yes | ||
|hackable=no | |hackable=no | ||
|value=~$3000 | |value=~$3000 | ||
|hostarea= | |hostarea= | ||
}} | }} | ||
Removed by owner | |||
== Repair and Setup== | == Repair and Setup== | ||
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Ball ways and table are installed. Test grinds are showing good repeatability. A grit and light parts catcher is installed on the left hand side. | Ball ways and table are installed. Test grinds are showing good repeatability. A grit and light parts catcher is installed on the left hand side. | ||
# Remove saddle | # Remove saddle | ||
# Z ways | ## Clean ways and check turcite for damage. | ||
## Replace way wipers. | |||
## Fix y-axis oil lines. | |||
## Reinspect/regrind table and chuck. | |||
# Clean Z ways. | |||
# Replace Z way pleated covers. | # Replace Z way pleated covers. | ||
# Install VFD. | |||
# Install | |||
# Develop an authorization plan. | # Develop an authorization plan. | ||
# Set up dust collection. | |||
== Diagnosis == | == Maintenance == | ||
=== Current Status === | |||
The small electromagnetic sine chuck was mounted and ground in to less than a tenth on 2017-03-12. | |||
=== Further Diagnosis === | |||
After initial repair, diagnosis of further issues will come via a test grind. | After initial repair, diagnosis of further issues will come via a test grind. | ||
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# Five block test can be used as a rough diagnosis. | # Five block test can be used as a rough diagnosis. | ||
== Table Removal == | === Procedures === | ||
==== Table Removal ==== | |||
The table needs to be removed periodically to clean the grinding grit from the ways. | The table needs to be removed periodically to clean the grinding grit from the ways. | ||
The table is heavy. We need a system for lifting the table off of the saddle. | The table is heavy. We need a system for lifting the table off of the saddle. The engine hoist doesn't work well. Perhaps a ceiling supported crane would work. | ||
# Remove the nut at the end of the cable on the right side under the table. Fasten a weight to the end of the cable to prevent the cable from unwinding on the capstan. | # Remove the nut at the end of the cable on the right side under the table. Fasten a weight to the end of the cable to prevent the cable from unwinding on the capstan. | ||
== Moving the grinder == | ==== Moving the grinder ==== | ||
The ball | ''Never move the grinder without coordinating with Dean, the owner.'' | ||
The two table ball cages need to be removed anytime the grinder is moved. This is necessary to prevent the races from Brinelling. To remove the ball cages, disconnect the X axis cable at each end of the table then prop up the ends of the table. | |||
[[Category:Loaned Equipment]] | |||
