[{"data":1,"prerenderedAt":799},["ShallowReactive",2],{"header-article-translation-zh-section-none":3,"section-zh-guides":4},null,[5,183,365,603],{"id":6,"title":7,"body":8,"category":158,"date":159,"description":160,"difficulty":161,"draft":162,"duration":163,"extension":164,"featured":162,"image":165,"layout":168,"locale":169,"meta":170,"navigation":171,"path":172,"references":173,"related":3,"section":177,"seo":178,"slug":179,"status":3,"stem":180,"tags":3,"translationKey":181,"updated":3,"video":3,"__hash__":182},"content\u002Fzh\u002Fguides\u002Fcam-toolpath-basics.md","CAM 刀路规划与保守切削参数指引",{"type":9,"value":10,"toc":151},"minimark",[11,20,24,27,33,36,44,49,52,80,83,148],[12,13,16],"cnc-warning",{"level":14,"title":15},"warning","首次试切安全准则",[17,18,19],"p",{},"首次切削前，请确认工件夹持可靠，佩戴符合 ANSI Z87.1 的护目镜，将急停开关保持在可触及范围，并先使用废料进行试切。下列数值只是保守起始值，不保证适用于所有机床和材料。",[21,22,23],"h2",{"id":23},"为什么桌面机床需要保守参数",[17,25,26],{},"桌面数控雕刻机的铝型材与光杆结构刚性远低于重型铸铁机床。盲目套用工业加工中心的激进进给，容易引发机床剧烈颤振、表面起棱起毛，甚至导致细柄硬质合金铣刀瞬间崩断。",[28,29],"figure",{"alt":30,"caption":31,"src":32},"多层板切削试样","图 1：采用保守进给参数在桌面雕刻机上完成的桦木多层板试切样品","\u002Fmedia\u002Fproject1.webp",[21,34,35],{"id":35},"切削参数计算公式",[17,37,38,39,43],{},"主轴每分钟进给量 (",[40,41,42],"strong",{},"F",") 计算公式：",[17,45,46],{},[40,47,48],{},"F = 主轴转速 (RPM) × 刀刃数 × 每刃切削厚度 (mm)",[17,50,51],{},"以标准的 3.175mm（1\u002F8 英寸）双刃硬质合金上切铣刀切削桦木多层板或 MDF 为例：",[53,54,55,62,68,74],"ul",{},[56,57,58,61],"li",{},[40,59,60],{},"主轴转速","：16,000 - 18,000 RPM",[56,63,64,67],{},[40,65,66],{},"刀刃数","：2",[56,69,70,73],{},[40,71,72],{},"目标单刃切削量","：0.05 - 0.08 mm\u002F齿",[56,75,76,79],{},[40,77,78],{},"起始进给范围","：1,600 - 2,400 mm\u002Fmin",[21,81,82],{"id":82},"常用板材推荐基准切削用量",[84,85,87],"parameter-table",{"title":86},"3.175mm 刀具在桌面 CNC 上的保守起始基准",[88,89,90,119],"table",{},[91,92,93],"thead",{},[94,95,96,101,104,107,110,113,116],"tr",{},[97,98,100],"th",{"align":99},"left","加工材料",[97,102,103],{"align":99},"主轴转速 (RPM)",[97,105,106],{"align":99},"单刃切削量 (mm\u002F齿)",[97,108,109],{"align":99},"水平切削进给 (mm\u002Fmin)",[97,111,112],{"align":99},"垂直下刀速度 (mm\u002Fmin)",[97,114,115],{"align":99},"单层最大下刀深度",[97,117,118],{"align":99},"横向步距",[120,121,122],"tbody",{},[94,123,124,130,133,136,139,142,145],{},[125,126,127],"td",{"align":99},[40,128,129],{},"桦木多层板 \u002F MDF",[125,131,132],{"align":99},"16,000 - 18,000",[125,134,135],{"align":99},"0.05 - 0.08",[125,137,138],{"align":99},"1,600 - 2,400",[125,140,141],{"align":99},"400 - 600（优先采用坡走下刀）",[125,143,144],{"align":99},"1.5 mm（≤ 刀具直径的 50%）",[125,146,147],{"align":99},"刀具直径的 40% - 45%",[17,149,150],{},"请先使用废料试切，再在正式加工前检查可用的刀路\u002F材料去除预览。如果机床或材料不同于技术笔记中的条件，应以机床制造商指导为准。",{"title":152,"searchDepth":153,"depth":153,"links":154},"",2,[155,156,157],{"id":23,"depth":153,"text":23},{"id":35,"depth":153,"text":35},{"id":82,"depth":153,"text":82},"刀路规划","2026-09-08","在桌面雕刻机上安全生成 2D 轮廓与下陷挖槽的核心准则，规避断刀、废料与机床共振。","intermediate",false,8,"md",{"src":32,"alt":166,"caption":167},"桦木多层板试切样品","采用保守参数完成的桦木多层板试切件，用于核验边缘光洁度与切削垂直度。","article","zh",{},true,"\u002Fzh\u002Fguides\u002Fcam-toolpath-basics",[174],{"id":175,"title":176},"notes-feeds-01","Laetoly CNC 硬件团队：进给、转速与单刃切削量技术笔记","guides",{"title":7,"description":160},"cam-toolpath-basics","zh\u002Fguides\u002Fcam-toolpath-basics","guides-toolpath-basics","bnCzyd6qF525dMCWpuPpTofW0XCuaZWKCqzt7wzEE2s",{"id":184,"title":185,"body":186,"category":337,"date":338,"description":339,"difficulty":340,"draft":162,"duration":341,"extension":164,"featured":162,"image":342,"layout":168,"locale":169,"meta":346,"navigation":171,"path":347,"references":348,"related":3,"section":177,"seo":360,"slug":361,"status":3,"stem":362,"tags":3,"translationKey":363,"updated":3,"video":3,"__hash__":364},"content\u002Fzh\u002Fguides\u002Fchip-load-and-feed-rate.md","每齿切屑厚度与进给速度：以验证为中心的方法",{"type":9,"value":187,"toc":329},[188,194,197,200,203,206,220,223,226,229,234,238,241,251,254,257,260,263,268,271,274,277,280,304,309,312,326],[12,189,191],{"level":14,"title":190},"每齿切屑厚度是计算目标，不是允许切削的依据",[17,192,193],{},"下面的公式用于解释参数关系，不能证明某台机器、某把刀具、某种材料或某种夹持能够承受计算结果。正式切削前，请遵守刀具厂商数据并进行废料试切。",[21,195,196],{"id":196},"参数关系",[17,198,199],{},"对于旋转刀具，可以用下面的关系估算名义每齿切屑厚度：",[17,201,202],{},"$$\nf_z = \\frac{V_f}{n \\cdot z}\n$$",[17,204,205],{},"其中：",[53,207,208,211,214,217],{},[56,209,210],{},"(f_z) 是名义每齿切屑厚度，单位为 mm\u002Ftooth；",[56,212,213],{},"(V_f) 是编程进给速度，单位为 mm\u002Fmin；",[56,215,216],{},"(n) 是主轴转速，单位为 RPM；",[56,218,219],{},"(z) 是有效切削刃数。",[17,221,222],{},"反推进给速度：",[17,224,225],{},"$$\nV_f = f_z \\cdot n \\cdot z\n$$",[17,227,228],{},"这只是编程变量之间的关系，不是通用材料参数表，也没有覆盖所有会影响实际切屑厚度的因素。",[28,230],{"alt":231,"caption":232,"src":233},"主轴转速、进给、刃数和每齿切屑厚度的关系示意图","示意图：变量彼此相关；实际切削力还取决于轴向和径向啮合量。","\u002Fmedia\u002Fdiagrams\u002Ffeeds-speeds\u002Ffirst-clean-cut-chip-load.svg",[21,235,237],{"id":236},"一个小例子不是推荐参数","一个小例子，不是推荐参数",[17,239,240],{},"假设双刃刀具的转速为 18,000 RPM，进给为 1,800 mm\u002Fmin：",[242,243,248],"pre",{"className":244,"code":246,"language":247,"meta":152},[245],"language-text","每齿切屑厚度 = 1,800 \u002F (18,000 × 2)\n每齿切屑厚度 = 0.05 mm\u002Ftooth\n","text",[249,250,246],"code",{"__ignoreMap":152},[17,252,253],{},"这个计算可用于检查程序，但不能告诉你刀具是否锋利、机器是否足够刚性，或者材料和夹持能否承受切削。刃数改变而进给不变，结果也会改变。",[21,255,256],{"id":256},"名义每齿切屑厚度并不是完整切削过程",[17,258,259],{},"公式简化了进给和切削刃之间的关系。实际切屑厚度还会受到径向啮合量、轴向切深、刀具几何形状、跳动、刀具锋利程度、材料、顺铣或逆铣方向，以及机器刚性的影响。",[17,261,262],{},"低径向啮合量可能降低实际最大切屑厚度。不要在没有针对具体刀具和工序来源的情况下，直接套用“进给增加 10%–30%”的规则。啮合量发生变化时，应参考刀具厂商的切屑变薄说明，再通过废料验证。",[28,264],{"alt":265,"caption":266,"src":267},"进给速度在每齿切屑厚度关系图中被突出显示","示意图：切深、步距或进给变化都会改变负载，应重新计算并试切，而不是套用固定修正。","\u002Fmedia\u002Fdiagrams\u002Ffeeds-speeds\u002Fchip-load-feed-highlight.svg",[21,269,270],{"id":270},"必须限定材料范围",[17,272,273],{},"木材、胶合板、MDF、塑料、铝材和纤维增强复合材料没有共同的安全每齿切屑厚度范围。刀具几何、涂层、主轴能力、机器刚性、排屑方式和夹持方式都会影响结果。",[17,275,276],{},"对于 Laetoly 的桌面 CNC 示例，应从已经记录的木材或胶合板基线开始，并保持首轮试切较浅。本文不授权在未经验证的机器上切削铝材或复合材料。塑料加工也不能只依赖“增加进给”解决，排屑和散热同样属于加工设置。金属和复合材料应使用针对材料和刀具的厂商数据，并先评估机器能力。",[21,278,279],{"id":279},"验证闭环",[281,282,283,286,289,292,295,298,301],"ol",{},[56,284,285],{},"记录刀具直径、刃数、伸出长度、材料、机器和夹持方式。",[56,287,288],{},"从刀具厂商或已批准的内部笔记中选择起始每齿切屑厚度范围。",[56,290,291],{},"计算编程进给，并确认它处于机器和主轴允许范围内。",[56,293,294],{},"降低首轮试切的切深和啮合量。",[56,296,297],{},"先关闭主轴进行安全高度空运行，再只切一个小型测试特征。",[56,299,300],{},"观察切屑、声音、边缘、工件移动、热量和丢步情况。",[56,302,303],{},"一次只改变一个变量，并记录结果。",[28,305],{"alt":306,"caption":307,"src":308},"平衡木材试切产生一致切屑的示意图","示意图：切屑形态是需要考虑的证据之一，不能单独作为通过或失败的测量标准。","\u002Fmedia\u002Fdiagrams\u002Ffeeds-speeds\u002Fhealthy-chips.svg",[21,310,311],{"id":311},"切削结果异常时怎么办",[53,313,314,317,320,323],{},[56,315,316],{},"出现细粉尘或摩擦：停止并重新评估刀具锋利度、进给、转速、啮合量和排屑，不要盲目降低进给；",[56,318,319],{},"出现烧焦或材料熔化：停止切削，检查热量、排屑、刀具几何和材料兼容性；",[56,321,322],{},"出现颤振或挠曲：在继续调整数值前，先减小啮合量、缩短伸出长度、改善夹持或换用更刚性的设置；",[56,324,325],{},"刀具折断或机器丢步：把当前设置视为未验证状态，检查工件、夹具、刀具和控制器状态后再决定是否重试。",[17,327,328],{},"每齿切屑厚度可以让参数调整更有依据，但不能替代机器限制、保守试切和明确的停止条件。",{"title":152,"searchDepth":153,"depth":153,"links":330},[331,332,333,334,335,336],{"id":196,"depth":153,"text":196},{"id":236,"depth":153,"text":237},{"id":256,"depth":153,"text":256},{"id":270,"depth":153,"text":270},{"id":279,"depth":153,"text":279},{"id":311,"depth":153,"text":311},"Feeds and Speeds","2026-09-09","解释进给、主轴转速、刃数和啮合量之间的关系，并提供适用于桌面 CNC 的保守验证闭环。","advanced",10,{"src":343,"alt":344,"caption":345},"\u002Fmedia\u002Farticle-covers\u002Fguides\u002Fchip-load-and-feed-rate.webp","无品牌硬质合金刀具在胶合板上进行浅层试切并产生切屑","文章封面示意图；切削画面不代表任何具体机器参数。",{},"\u002Fzh\u002Fguides\u002Fchip-load-and-feed-rate",[349,353,357],{"id":350,"title":351,"url":352},"onsrud-plastic-routing","LMT Onsrud CNC Plastic Routing: Fixturing, Feeds & Tooling","https:\u002F\u002Fonsrud.com\u002Farticles\u002FFixturing-and-Routing-of-Plastics-with-CNC.asp",{"id":354,"title":355,"url":356},"onsrud-soft-plywood-data","LMT Onsrud Soft Plywood Technical Data","https:\u002F\u002Fwww.onsrud.com\u002Fimages\u002FSoft%20Plywood.pdf",{"id":358,"title":359},"laetoly-cam-toolpath-basics","Laetoly CAM Toolpath Planning & Conservative Feeds",{"title":185,"description":339},"chip-load-and-feed-rate","zh\u002Fguides\u002Fchip-load-and-feed-rate","guides-chip-load-and-feed-rate","My_Vin7kCfqgzVUaBL96v3W2KcimP1i-Lvlu6MDE2Gg",{"id":366,"title":367,"body":368,"category":586,"date":338,"description":587,"difficulty":588,"draft":162,"duration":341,"extension":164,"featured":162,"image":589,"layout":168,"locale":169,"meta":593,"navigation":171,"path":594,"references":595,"related":3,"section":177,"seo":598,"slug":599,"status":3,"stem":600,"tags":3,"translationKey":601,"updated":3,"video":3,"__hash__":602},"content\u002Fzh\u002Fguides\u002Ffirst-clean-cut.md","第一次稳定 CNC 试切：保守的设置流程",{"type":9,"value":369,"toc":578},[370,376,380,383,400,403,407,410,483,486,489,492,495,498,501,507,510,513,516,533,538,542,545,565,568,572,575],[12,371,373],{"level":14,"title":372},"先验证试切，不要直接切正式工件",[17,374,375],{},"本文数值只适用于条件相近的桌面 CNC 起始设置，不是所有机器都安全的通用配方。请遵守机器和刀具厂商限制，将急停保持在可触及位置，并使用相同材料的废料进行试切。",[21,377,379],{"id":378},"先固定前提再填写参数","先固定前提，再填写参数",[17,381,382],{},"进给和转速必须结合机器、刀具、材料和啮合量理解。填写数值前，请记录：",[53,384,385,388,391,394,397],{},[56,386,387],{},"机器类型和大致刚性；",[56,389,390],{},"刀具直径、刃数、刃长和伸出长度；",[56,392,393],{},"材料种类、厚度，以及是实木、胶合板还是 MDF；",[56,395,396],{},"主轴范围、进给上限、夹持方式和吸尘条件；",[56,398,399],{},"当前工序是型腔、轮廓还是贯穿切削。",[17,401,402],{},"其中任一项发生变化，都应把旧参数当作新的起点，而不是已经证明的配方。",[21,404,406],{"id":405},"laetoly-的保守起始基线","Laetoly 的保守起始基线",[17,408,409],{},"对于 3.175mm（1\u002F8 英寸）双刃上切硬质合金刀、桦木胶合板或 MDF，Laetoly 当前笔记使用下面的初始窗口：",[84,411,413],{"title":412},"桌面 CNC 初始基线；必须在相同材料废料上验证",[88,414,415,428],{},[91,416,417],{},[94,418,419,422,425],{},[97,420,421],{},"参数",[97,423,424],{},"起始窗口",[97,426,427],{},"边界",[120,429,430,440,451,462,473],{},[94,431,432,434,437],{},[125,433,60],{},[125,435,436],{},"16,000–18,000 RPM",[125,438,439],{},"必须处于主轴和刀具允许范围内",[94,441,442,445,448],{},[125,443,444],{},"每齿切屑厚度",[125,446,447],{},"0.05–0.08 mm\u002Ftooth",[125,449,450],{},"是计算目标，不是安全保证",[94,452,453,456,459],{},[125,454,455],{},"进给速度",[125,457,458],{},"1,600–2,400 mm\u002Fmin",[125,460,461],{},"堵转、颤振或丢步时应停止并降低负载",[94,463,464,467,470],{},[125,465,466],{},"每层切深",[125,468,469],{},"不超过 1.5mm",[125,471,472],{},"对此基线保持不超过刀具直径的 50%",[94,474,475,477,480],{},[125,476,118],{},[125,478,479],{},"刀具直径的 40%–45%",[125,481,482],{},"刚性或夹持不确定时应减小",[17,484,485],{},"不要把这张表直接用于 6mm 刀具、不同刃数、铝材、亚克力或另一台机器。刀具变化后，同一个进给值会产生不同的每齿切屑厚度和切削力。",[28,487],{"alt":231,"caption":488,"src":233},"示意图：进给、转速和刃数决定名义每齿切屑厚度；啮合量仍会改变切削力。",[21,490,491],{"id":491},"不要用通用规则决定每层切深",[17,493,494],{},"每层切深是一次切削中沿 Z 轴去除的材料厚度。相比深切，浅层首刀更容易验证，因为它降低了切削力，也更容易及时停止异常运动。",[17,496,497],{},"优先选择能够证明刀具、工件和夹持稳定的最小切深。“刀具直径的一半”在某些轻型木工设置中可以作为保守上限启发，但它不是所有刀具的最大值，也不会自动保证安全。当刀具较长、材料较硬、机器柔性较大、型腔狭窄或夹持不确定时，应进一步减小。",[17,499,500],{},"可以用向上取整计算层数：",[242,502,505],{"className":503,"code":504,"language":247,"meta":152},[245],"切削层数 = ceiling(总切深 \u002F 选定的每层切深)\n",[249,506,504],{"__ignoreMap":152},[17,508,509],{},"最后一层不应超过设定的每层切深。如果需要精加工，应在粗加工中明确保留余量。",[21,511,512],{"id":512},"完成空运行和夹持检查",[17,514,515],{},"开始切削前：",[281,517,518,521,524,527,530],{},[56,519,520],{},"确认当前工作零点和总切深；",[56,522,523],{},"确认夹具、螺钉、吸尘罩和夹头不会进入刀路；",[56,525,526],{},"在已知安全高度、主轴关闭的情况下运行刀路；",[56,528,529],{},"确认刀具不会意外离开工件范围，且最终深度正确；",[56,531,532],{},"保持急停可触及，不要解除护罩、限位、门或联锁。",[28,534],{"alt":535,"caption":536,"src":537},"刀具以指定横向步距进行重叠切削的示意图","示意图：横向步距会改变啮合宽度和切削力。","\u002Fmedia\u002Fdiagrams\u002Ffeeds-speeds\u002Ffirst-clean-cut-stepover.svg",[21,539,541],{"id":540},"先读懂切削结果再改变参数","先读懂切削结果，再改变参数",[17,543,544],{},"出现工件移动、刀具明显挠曲、机器丢步、声音突然改变、冒烟或材料熔化时，应立即停止。检查：",[53,546,547,553,559],{},[56,548,549,552],{},[40,550,551],{},"切屑："," 固体切屑通常比细粉尘更有参考价值，但具体形态仍取决于材料和刀具几何形状；",[56,554,555,558],{},[40,556,557],{},"声音："," 刺耳啸叫、颤振或突然增大的负载是停止信号，不是继续运行的理由；",[56,560,561,564],{},[40,562,563],{},"边缘："," 烧焦、毛刺、撕裂或尺寸误差可能同时与几何形状、啮合量、夹持和参数有关。",[17,566,567],{},"一次只改变一个变量，并记录实际刀具、材料、工作零点、转速、进给、每层切深、步距和结果。带记录的失败试切比没有上下文的“好参数”更有价值。",[28,569],{"alt":570,"caption":571,"src":308},"平衡木材切削产生一致切屑的示意图","示意图：切屑只是观察指标之一，应与声音、边缘、工件移动和机器限制一起判断。",[21,573,574],{"id":574},"把第一次切削当作验证闭环",[17,576,577],{},"第一次切削的目标不是最快的周期，而是验证机器、工作零点、刀具、材料、夹持和刀路能够相互匹配。完成记录后，再一次只优化一个变量，并保留已经验证过的记录作为回退点。",{"title":152,"searchDepth":153,"depth":153,"links":579},[580,581,582,583,584,585],{"id":378,"depth":153,"text":379},{"id":405,"depth":153,"text":406},{"id":491,"depth":153,"text":491},{"id":512,"depth":153,"text":512},{"id":540,"depth":153,"text":541},{"id":574,"depth":153,"text":574},"Toolpath","为新手提供一套从刀路起始参数、每层切深到废料验证的保守试切流程。","beginner",{"src":590,"alt":591,"caption":592},"\u002Fmedia\u002Farticle-covers\u002Fguides\u002Ffirst-clean-cut.webp","桌面 CNC 位于已夹紧的胶合板试切件上方","文章封面示意图；机器处于两次试切之间的状态。",{},"\u002Fzh\u002Fguides\u002Ffirst-clean-cut",[596,597],{"id":358,"title":359},{"id":354,"title":355,"url":356},{"title":367,"description":587},"first-clean-cut","zh\u002Fguides\u002Ffirst-clean-cut","guides-first-clean-cut","iiSL8GyjsATHWabgd4P6L0KWqcem9I4JwJCLQpmLFss",{"id":604,"title":605,"body":606,"category":780,"date":338,"description":781,"difficulty":588,"draft":162,"duration":163,"extension":164,"featured":162,"image":782,"layout":168,"locale":169,"meta":786,"navigation":171,"path":787,"references":788,"related":3,"section":177,"seo":794,"slug":795,"status":3,"stem":796,"tags":3,"translationKey":797,"updated":3,"video":3,"__hash__":798},"content\u002Fzh\u002Fguides\u002Frouter-bit-geometry.md","如何根据刀具几何形状选择 CNC 铣刀",{"type":9,"value":607,"toc":772},[608,614,617,620,628,678,683,686,689,692,697,700,704,707,710,715,718,721,724,729,732,735,738,743,746,769],[12,609,611],{"level":14,"title":610},"这是选刀原则，不是针对某台机器的安全保证",[17,612,613],{},"下面的关系用于确定起始刀具，不能替代刀具厂商数据、机器手册和废料试切。正式切削前，请确认刀柄、刃长、夹头、材料、夹持、路径和安全高度。",[21,615,616],{"id":616},"先明确边缘和排屑问题",[17,618,619],{},"选择铣刀时，不要先看包装上的名称，而应先明确最终结果：",[281,621,622,625],{},[56,623,624],{},"哪个表面需要最干净的边缘？",[56,626,627],{},"切屑应该往哪里排出，才能避免堆积、重复切削或过热？",[88,629,630,643],{},[91,631,632],{},[94,633,634,637,640],{},[97,635,636],{},"几何形状",[97,638,639],{},"通常效果",[97,641,642],{},"需要检查的取舍",[120,644,645,656,667],{},[94,646,647,650,653],{},[125,648,649],{},"上切螺旋",[125,651,652],{},"将切屑向上带出，通常有利于排屑",[125,654,655],{},"上表面可能出现更多毛刺或撕裂，需要良好吸尘",[94,657,658,661,664],{},[125,659,660],{},"下切螺旋",[125,662,663],{},"将切屑压向工件，可能改善可见上边缘",[125,665,666],{},"盲槽或型腔中的切屑可能堆积并被重复切削",[94,668,669,672,675],{},[125,670,671],{},"压缩螺旋",[125,673,674],{},"组合相反的刃向，用于控制板材上下边缘",[125,676,677],{},"取决于切削深度；浅层切削可能没有进入压缩区域",[28,679],{"alt":680,"caption":681,"src":682},"上切铣刀将切屑带离工件的示意图","示意图：上切螺旋会将切屑向上带出；实际边缘质量还取决于木纹、支撑和切削参数。","\u002Fmedia\u002Fdiagrams\u002Ftooling\u002Frouter-bit-geometry-upcut-chip-direction.svg",[17,684,685],{},"不要把“上切”和“下切”理解成质量排名。它们只是不同的排屑选择。型腔中下切刀可能带来更干净的上边缘，但也可能让切屑留在型腔中；贯穿切削中上切刀可能更利于排屑，但会增加上边缘毛刺。最终选择取决于当前工序能接受哪一种取舍。",[21,687,688],{"id":688},"什么时候使用压缩刀",[17,690,691],{},"当覆膜板或胶合板的上下表面都需要控制边缘时，压缩刀可能有价值。它只有在切削深度进入刀具设计的重叠区域时，才能产生预期效果。必须遵守刀具厂商给出的最小啮合深度，不要假设一次浅层切削就能实现压缩切削。",[28,693],{"alt":694,"caption":695,"src":696},"上下刃向相反的压缩铣刀示意图","示意图：压缩几何组合了相反刃向，所需切削深度取决于具体刀具。","\u002Fmedia\u002Fdiagrams\u002Ftooling\u002Frouter-bit-geometry-compression.svg",[17,698,699],{},"对于普通胶合板或 MDF，优先选择能够解决边缘问题的简单几何形状。压缩刀并不自动更好，复杂刀具也可能增加排屑和参数调整难度。",[21,701,703],{"id":702},"把刃数当作约束而不是评分","把刃数当作约束，而不是评分",[17,705,706],{},"刃数会改变排屑空间，以及进给、转速和每齿切屑厚度之间的关系。单刃刀在某些材料和机器条件下可以提供更大的排屑空间；双刃刀是木工场景中常见的起点；更多刃数则可能适合特定的精加工或材料去除策略，但也会改变所需进给和排屑条件。",[17,708,709],{},"不要把某种刃数的进给值复制给另一种刃数。应根据实际刀具使用公式和厂商表格，再通过废料验证。",[28,711],{"alt":712,"caption":713,"src":714},"带螺旋刃的双刃上切铣刀示意图","双刃刀是常见木工起点，但不是所有材料和机器的通用默认值。","\u002Fmedia\u002Fdiagrams\u002Ftooling\u002Frouter-bit-geometry-upcut.svg",[21,716,717],{"id":717},"优先选择刚好够用的最短刀具",[17,719,720],{},"更长的刃长可以增加可达深度，但通常会降低刚性。“刃长约为直径三倍”可以作为早期选刀时的警戒线，不能当作通用安全上限。刀具材料、刀柄直径、伸出长度、机器刚性、径向啮合量和进给都会影响挠曲。",[17,722,723],{},"选择足以穿过工件的刃长即可，不要额外追求长刃。伸出长度应尽可能短，并确认夹头夹住的是刀柄而不是刃部。",[28,725],{"alt":726,"caption":727,"src":728},"长刃铣刀在切削力下发生挠曲的示意图","示意图：未支撑长度越长，挠曲风险越高；实际限制取决于完整加工条件。","\u002Fmedia\u002Fdiagrams\u002Ftooling\u002Frouter-bit-geometry-flute-length.svg",[21,730,731],{"id":731},"将粗加工和精加工分开",[17,733,734],{},"负责去除大部分材料的刀具，不必同时建立最终尺寸。粗加工可以有意留出少量余量，再用更小啮合量的精加工清除余量，从而获得更可预测的边缘和尺寸。",[17,736,737],{},"这对尺寸精度和可见边缘很有帮助，但不能替代夹持检查、刀路模拟和废料试切。",[28,739],{"alt":740,"caption":741,"src":742},"粗加工留下余量并由精加工建立最终边界的示意图","示意图：粗加工去除大部分材料，精加工负责建立最终边界。","\u002Fmedia\u002Fdiagrams\u002Ftooling\u002Frouter-bit-geometry-roughing-finishing.svg",[21,744,745],{"id":745},"可重复执行的选刀清单",[281,747,748,751,754,757,760,763,766],{},[56,749,750],{},"明确材料、厚度、可见表面，以及工序是型腔、轮廓还是贯穿切削。",[56,752,753],{},"根据边缘和排屑要求选择刃向。",[56,755,756],{},"核对刀具直径、刃数、刃长、刀柄和厂商限制。",[56,758,759],{},"选择刚好够用的刃长，并让伸出长度尽可能短。",[56,761,762],{},"设置保守刀路，完成模拟并检查夹具和安全高度。",[56,764,765],{},"在相同材料的废料上进行浅层试切，观察切屑、声音、边缘和工件移动。",[56,767,768],{},"一次只改变一个变量，并记录实际刀具、材料和结果。",[17,770,771],{},"最好的刀具不是最复杂的刀具，而是能够满足当前边缘、排屑、可达深度和刚性要求，并且可以通过试切验证的最简单方案。",{"title":152,"searchDepth":153,"depth":153,"links":773},[774,775,776,777,778,779],{"id":616,"depth":153,"text":616},{"id":688,"depth":153,"text":688},{"id":702,"depth":153,"text":703},{"id":717,"depth":153,"text":717},{"id":731,"depth":153,"text":731},{"id":745,"depth":153,"text":745},"Tooling","从上切、下切、压缩刀、刃数和刀具刚性出发，为桌面 CNC 路由选择合适的刀具。",{"src":783,"alt":784,"caption":785},"\u002Fmedia\u002Farticle-covers\u002Fguides\u002Frouter-bit-geometry.webp","桌面 CNC 旁工作台上的三把无品牌螺旋铣刀","文章封面示意图；刀具排列不代表具体刀具规格。",{},"\u002Fzh\u002Fguides\u002Frouter-bit-geometry",[789,793],{"id":790,"title":791,"url":792},"onsrud-routing-tools-catalog","LMT Onsrud Production Cutting Tools Catalog","https:\u002F\u002Fwww.onsrud.com\u002Fimages\u002F2017%20LMT%20Onsrud%20Production%20Cutting%20Tools%20Catalog.pdf",{"id":358,"title":359},{"title":605,"description":781},"router-bit-geometry","zh\u002Fguides\u002Frouter-bit-geometry","guides-router-bit-geometry","kq1B4j8X9fWqwMjOJehnORxi3KmHrWWSvsY443unfEI",1789009347331]