engineering-dat/structure-design-dat/2025-12-22-17-06-26.png
... ...
Binary files /dev/null and b/engineering-dat/structure-design-dat/2025-12-22-17-06-26.png differ
engineering-dat/structure-design-dat/2025-12-22-17-07-19.png
... ...
Binary files /dev/null and b/engineering-dat/structure-design-dat/2025-12-22-17-07-19.png differ
engineering-dat/structure-design-dat/2025-12-22-17-07-41.png
... ...
Binary files /dev/null and b/engineering-dat/structure-design-dat/2025-12-22-17-07-41.png differ
engineering-dat/structure-design-dat/2025-12-22-17-07-58.png
... ...
Binary files /dev/null and b/engineering-dat/structure-design-dat/2025-12-22-17-07-58.png differ
engineering-dat/structure-design-dat/2025-12-22-17-08-43.png
... ...
Binary files /dev/null and b/engineering-dat/structure-design-dat/2025-12-22-17-08-43.png differ
engineering-dat/structure-design-dat/2025-12-22-17-09-17.png
... ...
Binary files /dev/null and b/engineering-dat/structure-design-dat/2025-12-22-17-09-17.png differ
engineering-dat/structure-design-dat/2025-12-22-17-09-32.png
... ...
Binary files /dev/null and b/engineering-dat/structure-design-dat/2025-12-22-17-09-32.png differ
engineering-dat/structure-design-dat/structure-design-dat.md
... ...
@@ -0,0 +1,39 @@
1
+
2
+
3
+# structure-design-dat
4
+
5
+## holder
6
+
7
+![](2025-12-22-17-06-26.png)
8
+
9
+## tube locker
10
+
11
+![](2025-12-22-17-07-19.png)
12
+
13
+
14
+## screw locker
15
+
16
+![](2025-12-22-17-07-41.png)
17
+
18
+## groove / slider
19
+
20
+![](2025-12-22-17-07-58.png)
21
+
22
+
23
+## tube locker / rotation / spring
24
+
25
+![](2025-12-22-17-08-43.png)
26
+
27
+
28
+## sheet metal
29
+
30
+![](2025-12-22-17-09-17.png)
31
+
32
+![](2025-12-22-17-09-32.png)
33
+
34
+
35
+
36
+
37
+## ref
38
+
39
+- [[onshape-dat]]
... ...
\ No newline at end of file
fab-dat/fab-mech-dat/fab-mech-dat.md
... ...
@@ -3,6 +3,21 @@
3 3
- [[3d-print-dat]] - [[3d-prototype-dat]]
4 4
5 5
6
+
7
+
8
+## fab-mech
9
+
10
+- [[fab-sheet-metal-dat]]
11
+
12
+## small scale and prototype preparation
13
+
14
+- [[fab-drilling-dat]]
15
+
16
+
17
+
18
+
19
+
20
+
6 21
## fab mech compare
7 22
8 23
### CNC Aluminium (per piece pricing)
fab-dat/fab-mech-dat/fab-sheet-metal-dat/fab-drilling-dat.md
... ...
@@ -0,0 +1,11 @@
1
+
2
+# fab-drilling-dat.md
3
+
4
+- make the **master pattern** for drilling
5
+
6
+
7
+
8
+
9
+## ref
10
+
11
+- [[fab-drilling]] - [[fab]] - [[fab-mech]]
... ...
\ No newline at end of file
mechanics-dat/CAD-dat/onshape-dat/onshape-dat.md
... ...
@@ -1,6 +1,9 @@
1 1
2 2
# onshape-dat
3 3
4
+- [[onshape-constrain-dat]]
5
+
6
+
4 7
5 8
## relevant
6 9
mechanics-dat/CAD-dat/onshape-dat/onshape-standard-dat.md
... ...
@@ -0,0 +1,33 @@
1
+
2
+# onshape-standard-dat.md
3
+
4
+## Method 1: Insert Standard Screws (Recommended)
5
+
6
+### Steps
7
+1. **Open an Assembly**
8
+ > Standard screws can only be inserted in **Assemblies**, not Part Studios.
9
+
10
+2. **Insert → Standard Content**
11
+ - Click **Insert** (top toolbar)
12
+ - Choose **Standard Content**
13
+
14
+3. **Choose the screw standard**
15
+ - Standards: `ISO`, `DIN`, `ANSI`, `ASME`
16
+ - Type: `Socket head`, `Pan head`, `Countersunk`, etc.
17
+ - Example:
18
+ - ISO → Screws → Socket head cap screw (ISO 4762)
19
+
20
+4. **Set parameters**
21
+ - Diameter: `M3`, `M4`, `M5`…
22
+ - Length: `8 mm`, `12 mm`, `20 mm`…
23
+ - Material (optional)
24
+
25
+5. **Place the screw**
26
+ - Click a **cylindrical hole face**
27
+ - Onshape auto-aligns the screw axis
28
+
29
+6. **Fasten with mates**
30
+ - Use **Fastened Mate**
31
+ - Or **Revolute Mate** if rotation is needed
32
+
33
+---
mechanics-dat/mechanical-assembly-dat/mechanical-assembly-dat.md
... ...
@@ -0,0 +1,6 @@
1
+
2
+# mechanical-assembly-dat
3
+
4
+
5
+## drill assembly
6
+
mechanics-dat/mechanical-structure-dat/tube-dat/tube-dat.md
... ...
@@ -0,0 +1,41 @@
1
+
2
+
3
+# tube-dat
4
+
5
+- [[tube-copper-dat]]
6
+
7
+- [[tube-pvc-dat]]
8
+
9
+
10
+6mm 以下
11
+
12
+聚氨酯管
13
+
14
+氟管, 铁氟龙管
15
+
16
+PA6尼龙管
17
+
18
+硅胶软管
19
+
20
+
21
+以下为 **≤6 mm 管径** 常见材料的**典型物理属性对比**（工程常用范围，具体数值会随配方/厂家变化）：
22
+
23
+| 材料 | 常见英文 | 密度 (g/cm³) | 硬度 | 抗拉强度 (MPa) | 工作温度 (°C) | 柔韧性 | 耐化学性 | 典型特点 |
24
+|---|---|---|---|---|---|---|---|---|
25
+| 聚氨酯管 | PU / TPU Tube | 1.10–1.25 | Shore A 80–98 | 30–55 | -40 ~ +80 | ⭐⭐⭐⭐ | ⭐⭐⭐ | 高弹性、耐磨、回弹好，气动常用 |
26
+| 氟管 / 铁氟龙管 | PTFE Tube | 2.10–2.30 | Shore D 50–65 | 20–35 | -200 ~ +260 | ⭐ | ⭐⭐⭐⭐⭐ | 极强耐腐蚀、低摩擦、不老化 |
27
+| PA6 尼龙管 | PA6 / Nylon 6 Tube | 1.12–1.15 | Shore D 70–80 | 50–80 | -40 ~ +120 | ⭐⭐ | ⭐⭐⭐⭐ | 强度高、耐压好、尺寸稳定 |
28
+| 硅胶软管 | Silicone Tube | 1.10–1.20 | Shore A 30–70 | 5–12 | -60 ~ +200 | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | 极柔软、耐高低温、生物惰性 |
29
+
30
+---
31
+
32
+### 关键工程对比要点（≤6 mm 管径时尤为明显）
33
+
34
+- **耐压能力（由高到低）**
35
+ PA6 尼龙 ＞ PU ＞ PTFE（薄壁） ＞ 硅胶
36
+- **柔软度 / 可弯折性**
37
+ 硅胶 ＞ PU ＞ PA6 ＞ PTFE
38
+- **耐化学 / 溶剂**
39
+ PTFE ＞ PA6 ≈ 硅胶 ＞ PU
40
+- **耐磨性**
41
+ PU ＞ PA6 ＞ PTFE ＞ 硅胶
... ...
\ No newline at end of file
mechanics-dat/mechanical-tools-dat/mechanical-tools-dat.md
... ...
@@ -59,7 +59,9 @@ The most important measurement is the **distance across the flat sides of the he
59 59
> 🔹 These sizes must match the hex socket of the bolt exactly.
60 60
61 61
62
+## the bad brand
62 63
64
+- [[delixi-dat]]
63 65
64 66
65 67
## ref