Differences

This shows you the differences between two versions of the page.

--- bandsaw_sop [2020/08/14 17:09] – [Safety Concerns] furst
+++ bandsaw_sop [2022/07/15 15:21] (current) – dave
@@ Line 52: / Line 52: @@
 ====Safe Operating Procedure====
 Sequence of Operation:
-  *Move the saw out from the alcove if cutting large stocks.
+  -Move the saw out from the alcove if cutting large stocks.
-  *Adjust the rip fence to the proper length for the cut. Lock the rip fence in place.
+  -Adjust the rip fence to the proper length for the cut. Lock the rip fence in place.
-  *Adjust the saw blade cover to 1/4” above the workpiece. Tighten the blade cover in place.
+  -Adjust the saw blade cover to 1/4” above the workpiece. Tighten the blade cover in place.
-  *Power on the motor controller. The power switch is located on the side of the unit.
+  -Power on the motor controller. The power switch is located on the side of the unit.
-  *Select the proper material setting on the motor controller. Press once to select the material group and then press the button to cycle through to the appropriate settings.
+  -Select the proper material setting on the motor controller. Press once to select the material group and then press the button to cycle through to the appropriate settings.
-  *Press On to start the bandsaw.
+  -Press On to start the bandsaw.
-  *Turn the exhaust system on.
+  -Turn the exhaust system on.
-  *Hold the material securely, keeping fingers at least 3 inches away from the saw blade. Use the push stick if necessary.
+  -Hold the material securely, keeping fingers at least 3 inches away from the saw blade. Use the push stick if necessary.
-  *Push the material through the saw blade evenly and slowly. If the sawblade chatters or screams, ease on the feed pressure.
+  -Push the material through the saw blade evenly and slowly. If the sawblade chatters or screams, ease on the feed pressure.
-  *Once the cut is complete, press Off on the motor controller to stop the bandsaw. Do not reach for the parts at this time.Turn the exhaust system off as well.
+  -Once the cut is complete, press Off on the motor controller to stop the bandsaw. Do not reach for the parts at this time.Turn the exhaust system off as well.
-  *Once the saw blade has come to a complete stop, remove your parts. Use a brush or the shop vacuum to clean up any remaining dust.
+  -Once the saw blade has come to a complete stop, remove your parts. Use a brush or the shop vacuum to clean up any remaining dust.
-  *Extend the saw blade cover to cover the entire blade.
+  -Extend the saw blade cover to cover the entire blade.
-  *Power off the motor controller (The motor controller stays illuminated for approximately 15 seconds after switching the power off).
+  -Power off the motor controller (The motor controller stays illuminated for approximately 15 seconds after switching the power off).
-  *Return the bandsaw to the alcove. Clean up any remaining dust on the floor.
+  -Return the bandsaw to the alcove. Clean up any remaining dust on the floor.
+Detailed Procedure:
+Supplies:
+  * Bandsaw blades are kept in the cabinet of the Bandsaw stand. Notify the lab staff by emailing bothman@ucsb.edu if you break a bandsaw blade. The lab staff will replace it.
+  * Resaw bar assembly is kept in the cabinet of the bandsaw stand. Use this to prevent the bandsaw blade from walking and moving during the cut.
+====Recommended blade selection and speed====
+In general, we want at least three cutting teeth to be in contact with the material being cut. So thinner materials require a finer tooth blade than thick materials. Please see lab staff for instruction on changing blades.
+The bandsaw motor connects to the blade drive via a two speed belt drive. The belt must be in the low range for cutting stainless steel and titanium. All other materials may be cut with the belt in high range. The controller has 4 material categories pre-programmed: wood, metal, non-ferrous metals and plastic. Within each category 4 materials are programmed. These preset speeds are listed below. The speeds are listed in two units (sfm/rpm): surface feet per minute (sfm)/ and revolutions per minute (rpm). The conversion factor between sfm and rpm changes with the position of the belt on the drive pulley.
+The speed adjust dial on the controller is used to adjust the speed up and down from these preset levels. If the saw is making a lot of noise, try lowering the speed.
+====References====
+**Manuals:**
+  * {{ :tools:rikonbandsaw:https_www.rikontools.com_manuals_10-326.pdf |}}
+  * {{ :tools:rikonbandsaw:striatech_information.pdf |}}
+**Other SOP’s:**
+**Sources for Supplies:**
+**Contact Information:**
+**Recipes:** \\
+General rule of thumb for TPI: always at a minimum have 3 teeth worth of engagement in your material at a time.\\
+{| style=""
+|+ Bandsaw Feeds and Speeds
+!
+Material
+!
+Blade TPI
+!
+SFPM
+|-
+|
+Aluminum
+|
+TPI @ 1 mm, <10 TPI @ > 6 mm
+|
+FPM
+|-
+|
+Steel (low carbon)
+|
+TPI @ 3 mm, <14 TPI @ > 6.5 mm
+|
+<250 FPM
+|-
+|
+Steel (stainless/Chromoly/High carbon)
+|
+TPI @ 1 mm, <14 TPI @ > 6 mm
+|
+<125 FPM
+|-
+|
+Plastic
+|
+TPI @ 1 mm, <10 TPI @ > 6 mm
+|
+FPM
+|-
+|
+Wood
+|
+TPI @ 1 mm, <10 TPI @ > 6 mm
+|
+FPM
+|}
+Other References: