From 9751aed9ceaf21376ba1f27f14286d68a95812ac Mon Sep 17 00:00:00 2001 From: lovebird Date: Sun, 18 Aug 2024 13:02:38 +0200 Subject: [PATCH] tests:hdpe --- resources/material/hdpe/assets/DSC02732.JPG | 3 ++ resources/material/hdpe/assets/DSC02734.JPG | 3 ++ resources/material/hdpe/assets/DSC02735.JPG | 3 ++ resources/material/hdpe/assets/DSC02737.JPG | 3 ++ resources/material/hdpe/assets/DSC02738.JPG | 3 ++ resources/material/hdpe/assets/DSC02739.JPG | 3 ++ resources/material/hdpe/assets/DSC02740.JPG | 3 ++ resources/material/milling-hdpe.md | 43 +++++++++++++++++++++ resources/material/tests.csv | 6 ++- 9 files changed, 68 insertions(+), 2 deletions(-) create mode 100644 resources/material/hdpe/assets/DSC02732.JPG create mode 100644 resources/material/hdpe/assets/DSC02734.JPG create mode 100644 resources/material/hdpe/assets/DSC02735.JPG create mode 100644 resources/material/hdpe/assets/DSC02737.JPG create mode 100644 resources/material/hdpe/assets/DSC02738.JPG create mode 100644 resources/material/hdpe/assets/DSC02739.JPG create mode 100644 resources/material/hdpe/assets/DSC02740.JPG create mode 100644 resources/material/milling-hdpe.md diff --git a/resources/material/hdpe/assets/DSC02732.JPG b/resources/material/hdpe/assets/DSC02732.JPG new file mode 100644 index 0000000..090d505 --- /dev/null +++ b/resources/material/hdpe/assets/DSC02732.JPG @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:62df26997cf764ad82d976a5cc7c44b1e7313269b973e7dbf7f85c46ca9da8cf +size 236043 diff --git a/resources/material/hdpe/assets/DSC02734.JPG b/resources/material/hdpe/assets/DSC02734.JPG new file mode 100644 index 0000000..86d93c4 --- /dev/null +++ b/resources/material/hdpe/assets/DSC02734.JPG @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:bf56dc577f97e0007662f3281a20dd0c6f95954801b7b1f79485d7c8f39d57d8 +size 249693 diff --git a/resources/material/hdpe/assets/DSC02735.JPG b/resources/material/hdpe/assets/DSC02735.JPG new file mode 100644 index 0000000..13106bc --- /dev/null +++ b/resources/material/hdpe/assets/DSC02735.JPG @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:6fddd76397464a625ae0ef77cdec15a0ce1b774476e873f168eb907c51f8dd0a +size 228686 diff --git a/resources/material/hdpe/assets/DSC02737.JPG b/resources/material/hdpe/assets/DSC02737.JPG new file mode 100644 index 0000000..2d2051b --- /dev/null +++ b/resources/material/hdpe/assets/DSC02737.JPG @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:ac6f0806e098b1c2be15158430c4e254f584ff0fbbb4821e6d0d10faebec62c5 +size 249608 diff --git a/resources/material/hdpe/assets/DSC02738.JPG b/resources/material/hdpe/assets/DSC02738.JPG new file mode 100644 index 0000000..890c26a --- /dev/null +++ b/resources/material/hdpe/assets/DSC02738.JPG @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:1ae05141dd76ac6a94b65f5a258476668b5178b89618152168943a4b1786961d +size 212066 diff --git a/resources/material/hdpe/assets/DSC02739.JPG b/resources/material/hdpe/assets/DSC02739.JPG new file mode 100644 index 0000000..8299040 --- /dev/null +++ b/resources/material/hdpe/assets/DSC02739.JPG @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:61f2f4f99c0bf338be0c087a6dc6a602cdab318480a75011032724992cc0d53b +size 248629 diff --git a/resources/material/hdpe/assets/DSC02740.JPG b/resources/material/hdpe/assets/DSC02740.JPG new file mode 100644 index 0000000..aed5438 --- /dev/null +++ b/resources/material/hdpe/assets/DSC02740.JPG @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:7893ead087e818421a5ae12b9df8f4faf7bb456ce35134aa44387f0fefa0c7e3 +size 318688 diff --git a/resources/material/milling-hdpe.md b/resources/material/milling-hdpe.md new file mode 100644 index 0000000..fc1f38b --- /dev/null +++ b/resources/material/milling-hdpe.md @@ -0,0 +1,43 @@ +### Milling - Speeds & Feeds + +# Machining Guide + +## Basic Machining Tips for Engineering Plastics + +- **Keep heat to a minimum** and ensure heat build-up in the part is avoided. +- **Keep tools sharp** at all times. +- Ensure that only the **cutting edge contacts** the material. +- Apply coolants (per guidelines) where heat is generated. +- The lower rigidity of plastics may require **support or plugging** to avoid deflection in thin-walled sections. +- Cutting tools should be **high-speed steel** or **carbide-tipped** for production runs, especially on graphite or glass-filled materials. + +## Matching Tolerance + +- It is much larger than for metal. +- Watch for **stress relieving** where a large body of material is removed. +- **Thermal conditioning** may be required after pre-machining on some parts. +- Allow a tolerance of **0.1-0.2% of nominal size**. +- Be aware of **thermal expansion** in larger parts or panels where fixings are required. +- **Minimum tolerance** for small dimensions: **0.05mm**. + +| Endmill Diameter (Millimeters) | Surface Speed (SMM) | Feed Per Tooth (MMPT) | +|--------------------------------|---------------------|-----------------------| +| 3.175mm | 91-114 SMM | 0.02286 | +| 6.350mm | 91-114 SMM | 0.04572 | +| 12.700mm | 91-114 SMM | 0.0889 | +| 15.875mm | 91-114 SMM | 0.1143 | +| 19.05mm | 91-114 SMM | 0.1397 | +| 25.4mm | 91-114 SMM | 0.1778 | + +| Endmill Diameter (inches) | Surface Speed (SFM) | Feed Per Tooth (IPT) | +|---------------------------|---------------------|----------------------| +| 1/8" | 300-375 SFM | 0.0009 | +| 1/4" | 300-375 SFM | 0.0018 | +| 1/2" | 300-375 SFM | 0.0035 | +| 5/8" | 300-375 SFM | 0.0045 | +| 3/4" | 300-375 SFM | 0.0055 | +| 1" | 300-375 SFM | 0.007 | + +### References + +- [Source: Feed Calculator](https://www.easyspeedsandfeeds.com/plastic) diff --git a/resources/material/tests.csv b/resources/material/tests.csv index 45cd4cf..e36ad0a 100644 --- a/resources/material/tests.csv +++ b/resources/material/tests.csv @@ -1,2 +1,4 @@ -Mill Diameter (mm),Material,Depth of Cut (mm),Width of Cut,Speed (RPM),Feed Rate (mm/min),Tool Material,Type,Type of Cutting,Tool,Cooling Method,Surface Finish Quality,Observations -17,HDPE,10,50.00%,1500,300,Carbide,Climbing,Contour,2 Flute,Cooling Fluid,, +Mill Diameter (mm),Material,Depth of Cut (mm),Width of Cut,Speed (RPM),Feed Rate (mm/min),Tool Material,Type,Type of Cutting,Tool,Error,Cooling Method,Surface Finish Quality,Observations +17,HDPE,10,4mm,1500,300,Carbide,Climbing,Contour,2 Flute,0.3,Cooling Fluid,5,Toolmarks +14,HDPE,10,5mm,2000,300,Carbide,Climbing,Contour,2 Flute,0.3,Cooling Fluid,5,Toolmarks | Bur +14,HDPE,15,100%,2000,300,Carbide,Helix,Pocket-Round,2 Flute,0.1,Cooling Fluid,10,