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Line 26: + − # Mount/grind in a chuck. − + + + + Line 38:
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no edit summary
|model=Mitsui 250MH
|model=Mitsui 250MH
|arrived=Late 2016
|arrived=Late 2016
|doesitwork=yes
|doesitwork=no
|contact=Dean Anderson
|contact=Dean Anderson
|where=Cold Metals
|where=Removed
|certification=yes
|certification=yes
|hackable=no
|hackable=no
|value=~$3000
|value=~$3000
|hostarea=Cold Metals
|hostarea=
}}
}}
Removed by owner
== Repair and Setup==
== Repair and Setup==
## Replace way wipers.
## Replace way wipers.
## Fix y-axis oil lines.
## Fix y-axis oil lines.
## Reinspect/regrind table and chuck.
# Clean Z ways.
# Clean Z ways.
# Replace Z way pleated covers.
# Replace Z way pleated covers.
# Install VFD.
# Install VFD.
# Develop an authorization plan.
# Develop an authorization plan.
# Set up dust collection.
# Set up dust collection.
== Maintenance ==
== Maintenance ==
=== Diagnosis ===
=== 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.
# 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.
# 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 ====
''Never move the grinder without coordinating with Dean, the owner.''
''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.
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]]