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Difference between revisions of "Dial Indicator"

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== Hemostats ==
+
== Dial Indicator ==
  Project developed by [[User:Patrick Gilland]]
+
  Project developed by [[User:Devon Smith]]
 
{{Statusboxtop}}
 
{{Statusboxtop}}
 
{{status-design}}
 
{{status-design}}
Line 8: Line 8:
  
 
==Abstract==
 
==Abstract==
# A dial indicator is a tool used to measure linear displacements. It accomplishes so via the use of a plunger that's constricted to a measured linear movement. Simply, when the plunger is pushed into the body of the tool, the distance it is pushed in is "indicated" on the "dial" face of the tool. This is useful for any kind of precise measurement of thickness, depth, width, and can even be used to ensure a machining device or tool is accurately trammed.  
+
* A dial indicator is a tool used to measure linear displacements. It accomplishes so via the use of a plunger that's constricted to a measured linear movement. Simply, when the plunger is pushed into the body of the tool, the distance it is pushed in is "indicated" on the "dial" face of the tool. This is useful for any kind of precise measurement of thickness, depth, width, and can even be used to ensure a machining device or tool is accurately trammed.  
  
# Picture of completed print using your printer [[Image:Hemostat.jpg|200px|right]]
+
* https://www.youmagine.com/designs/dial-indicator [[Image:Dial Indicator Front.jpg|200px|right]]
 +
 
 +
* OSAT: http://www.appropedia.org/Open_Source_Appropriate_Technology
  
 
== Bill of Materials==
 
== Bill of Materials==
Line 22: Line 24:
 
|-
 
|-
 
|  PLA
 
|  PLA
|  ~XX grams
+
|  ~87 grams
 
|  Filament supplier of choice
 
|  Filament supplier of choice
 
|  Color of choice
 
|  Color of choice
Line 28: Line 30:
 
|  Dial Indicator Body
 
|  Dial Indicator Body
 
|  1
 
|  1
|  [/ Youmagine]
+
|  [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
 
|  Using PLA
 
|  Using PLA
 
|-
 
|-
 
|  Dial Indicator Top
 
|  Dial Indicator Top
 
|  1
 
|  1
|  [/ Youmagine]
+
|  [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
 
|  Using PLA
 
|  Using PLA
 
|-
 
|-
 
|  Spacer
 
|  Spacer
3
+
2
|  [/ Youmagine]
+
|  [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
 
|  Using PLA
 
|  Using PLA
 
|-
 
|-
 
|  Dial Indicator Needle
 
|  Dial Indicator Needle
 
|  1
 
|  1
|  [/ Youmagine]
+
|  [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
 
|  Using PLA
 
|  Using PLA
 
|-
 
|-
 
|  Gear 1-2
 
|  Gear 1-2
 
|  1
 
|  1
|  [/ Youmagine]
+
|  [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
 
|  Using PLA
 
|  Using PLA
 
|-
 
|-
 
|  Gear 3-4
 
|  Gear 3-4
 
|  1
 
|  1
|  [/ Youmagine]
+
|  [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
 
|  Using PLA
 
|  Using PLA
 
|-
 
|-
 
|  Gear 5-6
 
|  Gear 5-6
 
|  1
 
|  1
|  [/ Youmagine]
+
|  [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
 
|  Using PLA
 
|  Using PLA
 
|-
 
|-
 
|  Dial Indicator Plunger
 
|  Dial Indicator Plunger
 
|  1
 
|  1
|  [/ Youmagine]
+
|  [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
 
|  Using PLA
 
|  Using PLA
 
|-
 
|-
 
|  Gear 7
 
|  Gear 7
 
|  1
 
|  1
|  [/ Youmagine]
+
|  [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
 
|  Using PLA
 
|  Using PLA
 
|-
 
|-
1/8 Diameter Button Head Cap Screw 1 inch long
+
6-32 Button Head Cap Screw 1 inch long
 
|  3
 
|  3
 
|   
 
|   
 
|   
 
|   
 
|-
 
|-
1/8 Diameter Button Head Cap Screw 1.25 inch long
+
6-32 Button Head Cap Screw 1.25 inch long
 
|  1
 
|  1
 
|   
 
|   
 
|   
 
|   
 
|-
 
|-
1/8 Diameter Nylock Nut
+
6-32 Nylock Nut
 
|  4
 
|  4
 
 
|-
 
|  1/8 Inner Diameter Washer
 
|  8
 
 
|   
 
|   
 
|   
 
|   
 
|-
 
|-
 
|}
 
|}
 
 
NUT & BOLT DIMENSIONS MAY CHANGE WITH CUSTOMIZATION OF PRINT
 
  
 
== Tools needed for fabrication of the OSAT==
 
== Tools needed for fabrication of the OSAT==
 
# [[Athena Build Overview| MOST Delta RepRap]] or similar RepRap 3-D printer
 
# [[Athena Build Overview| MOST Delta RepRap]] or similar RepRap 3-D printer
# Phillips head screw driver
+
# Number 2 Phillip's Head Screw Driver
# 5.5 mm wrench
+
# 1/4 inch Open End Wrench
  
 
TOOL REQUIREMENTS MAY VARY BASED ON NUT & BOLT SELECTION
 
TOOL REQUIREMENTS MAY VARY BASED ON NUT & BOLT SELECTION
Line 105: Line 99:
 
== Skills and Knowledge Necessary to Make the OSAT ==
 
== Skills and Knowledge Necessary to Make the OSAT ==
 
* 3D Printing Knowledge & Capabilities
 
* 3D Printing Knowledge & Capabilities
* Understand the needs & application for the most efficient customization
+
* Understand the needs & application for a dial indicator
 +
* Ability to assemble fasteners and critically aligned plastic components
  
 
== Technical Specifications and Assembly Instructions==
 
== Technical Specifications and Assembly Instructions==
# Customize & Print 2 copies of the Hemostats
+
* Download and print the plastic components listed in the bill of materials
* It is recommended to print around 30 mm/s with a 100% infill
+
** Recommended:
# Orient the two printed pieces so that:
+
*** Material: PLA
## The holes align
+
*** Layer Height: 0.25 mm
## The finger holes of the prints are on opposite sides
+
*** Shell Thickness: 0.8 mm
## Locking wedges are pointing toward each other for proper engagement
+
*** Fill Density: 100%
# Insert bolt into hole. (Direction does not matter)
+
*** Print Speed: 50 mm/s  
# Engage the nut onto the bolt.
+
*** Printing Temperature: 215 C
# Tighten with very little force using a screw driver and a wrench. (Over tightening will the limit the ability of the hemostats.
+
* Clean burrs and excess plastic from parts that may be remaining from print
 +
* Align the corresponding components from the bill of materials to the pictures posted below while ensuring:
 +
** All holes align
 +
** All gears mesh together
 +
[[Image:Open Gears.jpg|200px]]
 +
[[Image:SpacerAlignment.jpg|200px]]
 +
[[Image:Rear.jpg|200px]]
 +
[[Image:Dial Indicator Front.jpg|200px]]
 +
* Assemble Fasteners so that the head of the screws are on the face of the indicator
 +
* Lightly tighten fasteners so that gears spin freely with minimal slop
 +
* Assemble needle so that needle is spaced away from dial face
 +
* Once completed, use a protractor to mark the face of the indicator in whichever scale is desired
 +
 
 
== Common Problems and Solutions==
 
== Common Problems and Solutions==
* Make sure that the wedges that lock into each other are both wide enough and deep enough so that they do not break when you try and lock the Hemostats down.
+
* If the gears don't align and interface properly, first ensure they are oriented with the proper gear in the proper location and proper orientation. Also ensure the layering of the gears is correct and in order. Another possibility is that the holes within the body and top  components aren't lined up correctly.
* Make sure the nut & bolt are loose enough to allow free movement of the hemostats.
+
 
* Make sure the all of the pieces are thick enough as to not bend under forces ('''minimum of 4mm thickness is recommended''')
+
* If the plunger is difficult to move: The indicator works best when the dial is rotated to move the plunger to it's location rather than using the plunger to rotate the high gear ratio.
  
 
== Cost savings==
 
== Cost savings==
* 25g of PLA ($0.40 USD) + 3mm Nut ($0.13 USD) + 3mm x 12mm bolt ($0.33 USD) = '''$0.86 USD Total'''
+
* 87g of PLA ($1.57 USD) + Hardware ($1.58 USD) = '''$3.15 USD Total'''
* Compared to '''$4.27 USD''' [https://www.amazon.com/Stainless-Hemostat-Mosquito-Straight-5-Inch/dp/B004C32AIQ/ref=sr_1_4?s=pet-supplies&ie=UTF8&qid=1544113930&sr=1-4&keywords=hemostats Cheapest Hemostats I Could Find]
+
* current one on the market: ($172.80 USD:https://www.mscdirect.com/browse/tnpla/86427457?cid=ppc-google-New+-+Measuring+%26+Inspecting+-+PLA_sW2Cu6rhf___164110844316_c_S&mkwid=sW2Cu6rhf%7Cdc&pcrid=164110844316&rd=k&product_id=86427457&gclid=EAIaIQobChMIyMap7rKV3wIVDAtpCh07fwOtEAQYBCABEgL5M_D_BwE/Current Market Indicator)
* '''Cost savings of $3.41 USD (79.9% cost savings)'''
+
* '''Cost savings of $169.65 USD (1.82% of the cost)'''
* '''The biggest benefit is not cost, but availability''' when Amazon delivery is not an option in a remote or devastated area.
 
  
 
== Benefited Internet Communities ==
 
== Benefited Internet Communities ==
 
'''Name and add links to at least 5 using single brackets around [url name]:'''
 
'''Name and add links to at least 5 using single brackets around [url name]:'''
 
*[http://www.appropedia.org/777_OSAT_projects_2018 Appropedia OSAT Project for MY4777]
 
*[http://www.appropedia.org/777_OSAT_projects_2018 Appropedia OSAT Project for MY4777]
*[https://www.fieldready.org/overview-1 Field Ready]
+
*[https://grabcad.com/ Grab Cad]
*[https://supply.unicef.org/unicef_b2c/app/displayApp/(layout=7.0-12_1_66_67_115&carea=%24ROOT)/.do?rf=y Unicef]
+
*[https://www.practicalmachinist.com/ Practical Machinist]
 
*[https://github.com/ Gitbug]
 
*[https://github.com/ Gitbug]
 
*[https://www.thingiverse.com/ Thingiverse]
 
*[https://www.thingiverse.com/ Thingiverse]
Line 138: Line 144:
 
==References==
 
==References==
  
* These hemostats were designed based on my own used of them
+
* https://www.thingiverse.com/thing:873948/comments
 
 
==Bill of Materials==
 
 
 
==Tools Needed for Creation of OSAT==
 
 
 
==Skills and Knowledge Necessary to Create OSAT==
 
 
 
==Technical Specification and Assembly Instruction==
 
 
 
==Common Problems and Solutions==
 
 
 
==Cost Savings==
 
 
 
==Benefitted Communities==
 
 
 
==References==
 

Latest revision as of 14:53, 10 December 2018

Dial Indicator[edit]

Project developed by User:Devon Smith
Status
This OSAT has been designed but not yet tested - use at own risk.
This OSAT has been prototyped.

You can help Appropedia by contributing to the next step in this OSAT's status.

Abstract[edit]

  • A dial indicator is a tool used to measure linear displacements. It accomplishes so via the use of a plunger that's constricted to a measured linear movement. Simply, when the plunger is pushed into the body of the tool, the distance it is pushed in is "indicated" on the "dial" face of the tool. This is useful for any kind of precise measurement of thickness, depth, width, and can even be used to ensure a machining device or tool is accurately trammed.

Bill of Materials[edit]

Part Quantity Source Comments
PLA ~87 grams Filament supplier of choice Color of choice
Dial Indicator Body 1 Youmagine Using PLA
Dial Indicator Top 1 Youmagine Using PLA
Spacer 2 Youmagine Using PLA
Dial Indicator Needle 1 Youmagine Using PLA
Gear 1-2 1 Youmagine Using PLA
Gear 3-4 1 Youmagine Using PLA
Gear 5-6 1 Youmagine Using PLA
Dial Indicator Plunger 1 Youmagine Using PLA
Gear 7 1 Youmagine Using PLA
6-32 Button Head Cap Screw 1 inch long 3
6-32 Button Head Cap Screw 1.25 inch long 1
6-32 Nylock Nut 4

Tools needed for fabrication of the OSAT[edit]

  1. MOST Delta RepRap or similar RepRap 3-D printer
  2. Number 2 Phillip's Head Screw Driver
  3. 1/4 inch Open End Wrench

TOOL REQUIREMENTS MAY VARY BASED ON NUT & BOLT SELECTION

Skills and Knowledge Necessary to Make the OSAT[edit]

  • 3D Printing Knowledge & Capabilities
  • Understand the needs & application for a dial indicator
  • Ability to assemble fasteners and critically aligned plastic components

Technical Specifications and Assembly Instructions[edit]

  • Download and print the plastic components listed in the bill of materials
    • Recommended:
      • Material: PLA
      • Layer Height: 0.25 mm
      • Shell Thickness: 0.8 mm
      • Fill Density: 100%
      • Print Speed: 50 mm/s
      • Printing Temperature: 215 C
  • Clean burrs and excess plastic from parts that may be remaining from print
  • Align the corresponding components from the bill of materials to the pictures posted below while ensuring:
    • All holes align
    • All gears mesh together

Open Gears.jpg SpacerAlignment.jpg Rear.jpg Dial Indicator Front.jpg

  • Assemble Fasteners so that the head of the screws are on the face of the indicator
  • Lightly tighten fasteners so that gears spin freely with minimal slop
  • Assemble needle so that needle is spaced away from dial face
  • Once completed, use a protractor to mark the face of the indicator in whichever scale is desired

Common Problems and Solutions[edit]

  • If the gears don't align and interface properly, first ensure they are oriented with the proper gear in the proper location and proper orientation. Also ensure the layering of the gears is correct and in order. Another possibility is that the holes within the body and top components aren't lined up correctly.
  • If the plunger is difficult to move: The indicator works best when the dial is rotated to move the plunger to it's location rather than using the plunger to rotate the high gear ratio.

Cost savings[edit]

Benefited Internet Communities[edit]

Name and add links to at least 5 using single brackets around [url name]:

References[edit]