建立方向盘项目初始版本
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models/conversion_disk_m4/DONE.txt
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models/conversion_disk_m4/DONE.txt
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ok
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models/conversion_disk_m4/validation.txt
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models/conversion_disk_m4/validation.txt
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Native Hole: threaded=True modeled=True size=M4x0.7 class=6H depth_type=ThroughAll valid=True faces=377
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Final: valid=True solids=1 volume=12125.67112200 faces=385
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Outside six PCD48 masks, old minus new volume=0.000000000; new minus old=0.000000000 mm3
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Reopened FCStd: modeled=True size=M4x0.7 class=6H final_valid=True
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STEP objects=1 total_volume=12125.67135829 total_faces=385 valid=True
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models/conversion_disk_m4/说明.md
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models/conversion_disk_m4/说明.md
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# 转换盘:外圈 M4 螺纹版
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在原有参数化转换盘的轮廓与尺寸基础上,外圈 PCD 48 mm 的 6 孔改为 M4 × 0.7、6H、右旋通孔螺纹;采用 FreeCAD 原生 PartDesign Hole 的实体螺纹(`ModelThread=True`),STEP 亦包含螺旋几何。
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原厚度 8 mm、外圈起始角 30°、中心 Ø15 mm、内圈 PCD 20 mm 的 8 个 Ø3 mm 通孔及背面 Ø28 × 2 mm 凹腔保持原样,孔位与轮廓由原参数化模型继承。原始模型和 STEP 没有覆盖。
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`OuterHole` 草图直径只用于六处孔的定位示意,实际螺纹的规格由 `OuterM4Thread` 孔特征的 `ThreadSize` 与 `ThreadClass` 控制,数值为 M4×0.7、6H;更改螺纹规格时应修改孔特征,不应仅修改草图圆直径。
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本文件用于新的加工打样;原盘模型外圈原为约 Ø4.234 mm 通孔,不能直接把该孔视为可攻 M4 的正常底孔。加工时需让厂家以螺纹规格加工并检验,实际材质、精度及配合需要厂家确认。螺纹几何、轮廓和 STEP 复核见 `validation.txt`,不代表装配、螺纹强度或实体试制已经验证。
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models/conversion_disk_m4/转换盘_M4.FCStd
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models/conversion_disk_m4/转换盘_M4.FCStd
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models/conversion_disk_m4/转换盘_M4.step
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models/conversion_disk_m4/转换盘_M4.step
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models/conversion_disk_m4/转换盘_M4预览.png
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models/conversion_disk_m4/转换盘_M4预览.png
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