jixie-all

![](/media/202605/Snipaste_2024-11-08_00-06-52_1778833924.png)

GB/T 1184

https://www.mechtool.cn/drawingandaccuracy/drawingandaccuracy_undeclaredtolerancevaluesforshapeandposition.html

# 材料

# 互换性
包容原则与最大实体原则

## 包容原则

![](/media/202605/Snipaste_2025-01-04_22-39-59_1778833935.png)

![](/media/202605/Snipaste_2025-01-04_22-43-07_1778833946.png)

![](/media/202605/Snipaste_2025-01-04_22-43-26_1778833957.png)

![](/media/202605/Snipaste_2025-01-04_22-43-46_1778833967.png)

## 最大实体原则

![](/media/202605/Snipaste_2025-01-05_21-15-13_1778833979.png)

![](/media/202605/Snipaste_2025-01-05_21-16-50_1778833990.png)

![](/media/202605/Snipaste_2025-01-05_21-18-23_1778834000.png)
## 最小实体原则

# 机械设计
## 尺寸链

![](/media/202605/Snipaste_2024-12-12_08-19-18_1778834062.png)

增环：随着

## 公差
![](../img/Snipaste_2025-11-23_08-31-20.png)

# 选型
## 螺纹紧固件
螺纹形成
![](../img/Snipaste_2024-10-28_01-13-45.png)
![](../img/Snipaste_2024-10-28_01-15-58.png)
![](../img/Snipaste_2024-10-28_01-16-38.png)
螺纹基本要素
![](../img/Snipaste_2024-10-28_01-17-29.png)
![](../img/Snipaste_2024-10-28_01-17-47.png)
![](../img/Snipaste_2024-10-28_01-18-10.png)
![](../img/Snipaste_2024-10-28_01-20-30.png)
![](../img/Snipaste_2024-10-28_01-21-05.png)
![](../img/Snipaste_2024-10-28_01-21-30.png)

螺纹的主要参数
![](../img/20241028102615.jpeg)

螺纹分类
![](../img/Snipaste_2024-10-28_10-45-53.png)
![](../img/Snipaste_2024-10-28_23-10-53.png)

螺纹表示法
![](../img/Snipaste_2024-10-28_23-11-48.png)
![](../img/Snipaste_2024-10-28_23-12-37.png)
![](../img/Snipaste_2024-10-28_23-13-12.png)
![](../img/Snipaste_2024-10-28_23-13-58.png)
![](../img/Snipaste_2024-10-28_23-14-43.png)

螺纹的标注
![](../img/Snipaste_2024-10-28_23-16-01.png)
![](../img/Snipaste_2024-10-28_23-16-32.png)
![](../img/Snipaste_2024-10-28_23-16-54.png)
![](../img/Snipaste_2024-10-28_23-17-23.png)
![](../img/Snipaste_2024-10-28_23-18-10.png)
![](../img/Snipaste_2024-10-28_23-19-16.png)
![](../img/Snipaste_2024-10-28_23-19-38.png)
![](../img/Snipaste_2024-10-28_23-20-06.png)

螺纹紧固件的种类及画法
![](../img/Snipaste_2024-10-28_23-21-06.png)
![](../img/Snipaste_2024-10-28_23-21-54.png)
![](../img/Snipaste_2024-10-28_23-22-45.png)
![](../img/Snipaste_2024-10-28_23-23-28.png)
![](../img/Snipaste_2024-10-28_23-23-46.png)
![](../img/Snipaste_2024-10-28_23-24-22.png)
![](../img/Snipaste_2024-10-28_23-24-49.png)
![](../img/Snipaste_2024-10-28_23-27-15.png)
![](../img/Snipaste_2024-10-28_23-28-43.png)
![](../img/Snipaste_2024-10-28_23-29-08.png)
![](../img/Snipaste_2024-10-28_23-31-30.png)
![](../img/Snipaste_2024-10-28_23-31-53.png)
![](../img/Snipaste_2024-10-29_06-25-49.png)
![](../img/Snipaste_2024-10-29_06-26-22.png)

键及其连接

# 三维建模练习
https://www.bilibili.com/video/BV1gehYemEfY/

![](../img/Snipaste_2026-03-09_13-09-24.png)