[{"data":1,"prerenderedAt":366},["ShallowReactive",2],{"post-zh-guides-chip-load-and-feed-rate":3,"header-article-translation-zh-guides-chip-load-and-feed-rate":202,"trans-guides-chip-load-and-feed-rate-zh":203},{"id":4,"title":5,"body":6,"category":167,"date":168,"description":169,"difficulty":170,"draft":171,"duration":172,"extension":173,"featured":171,"image":174,"layout":178,"locale":179,"meta":180,"navigation":181,"path":182,"references":183,"related":195,"section":196,"seo":197,"slug":198,"status":195,"stem":199,"tags":195,"translationKey":200,"updated":195,"video":195,"__hash__":201},"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":7,"value":8,"toc":158},"minimark",[9,18,22,25,28,31,47,50,53,56,62,66,69,80,83,86,89,92,97,100,103,106,109,133,138,141,155],[10,11,14],"cnc-warning",{"level":12,"title":13},"warning","每齿切屑厚度是计算目标，不是允许切削的依据",[15,16,17],"p",{},"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。",[19,20,21],"h2",{"id":21},"参数关系",[15,23,24],{},"对于旋转刀具，可以用下面的关系估算名义每齿切屑厚度：",[15,26,27],{},"$$\nf_z = \\frac{V_f}{n \\cdot z}\n$$",[15,29,30],{},"其中：",[32,33,34,38,41,44],"ul",{},[35,36,37],"li",{},"(f_z) 是名义每齿切屑厚度，单位为 mm\u002Ftooth；",[35,39,40],{},"(V_f) 是编程进给速度，单位为 mm\u002Fmin；",[35,42,43],{},"(n) 是主轴转速，单位为 RPM；",[35,45,46],{},"(z) 是有效切削刃数。",[15,48,49],{},"反推进给速度：",[15,51,52],{},"$$\nV_f = f_z \\cdot n \\cdot z\n$$",[15,54,55],{},"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。",[57,58],"figure",{"alt":59,"caption":60,"src":61},"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",[19,63,65],{"id":64},"一个小例子不是推荐参数","一个小例子，不是推荐参数",[15,67,68],{},"假设双刃刀具的转速为 18,000 RPM，进给为 1,800 mm\u002Fmin：",[70,71,77],"pre",{"className":72,"code":74,"language":75,"meta":76},[73],"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","",[78,79,74],"code",{"__ignoreMap":76},[15,81,82],{},"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。",[19,84,85],{"id":85},"名义每齿切屑厚度并不是完整切削过程",[15,87,88],{},"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。",[15,90,91],{},"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。",[57,93],{"alt":94,"caption":95,"src":96},"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",[19,98,99],{"id":99},"必须限定材料范围",[15,101,102],{},"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。",[15,104,105],{},"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。",[19,107,108],{"id":108},"验证闭环",[110,111,112,115,118,121,124,127,130],"ol",{},[35,113,114],{},"记录刀具直径、刃数、伸出长度、材料、机器和夹持方式。",[35,116,117],{},"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。",[35,119,120],{},"计算编程进给，并确认它处于机器和主轴允许范围内。",[35,122,123],{},"降低首轮试切的切深和啮合量。",[35,125,126],{},"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。",[35,128,129],{},"观察切屑、声音、边缘、工件移动、热量和丢步情况。",[35,131,132],{},"一次只改变一个变量，并记录结果。",[57,134],{"alt":135,"caption":136,"src":137},"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",[19,139,140],{"id":140},"切削结果异常时怎么办",[32,142,143,146,149,152],{},[35,144,145],{},"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；",[35,147,148],{},"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；",[35,150,151],{},"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；",[35,153,154],{},"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。",[15,156,157],{},"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":76,"searchDepth":159,"depth":159,"links":160},2,[161,162,163,164,165,166],{"id":21,"depth":159,"text":21},{"id":64,"depth":159,"text":65},{"id":85,"depth":159,"text":85},{"id":99,"depth":159,"text":99},{"id":108,"depth":159,"text":108},{"id":140,"depth":159,"text":140},"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",false,10,"md",{"src":175,"alt":176,"caption":177},"\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。","article","zh",{},true,"\u002Fzh\u002Fguides\u002Fchip-load-and-feed-rate",[184,188,192],{"id":185,"title":186,"url":187},"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":189,"title":190,"url":191},"onsrud-soft-plywood-data","LMT Onsrud Soft Plywood Technical Data","https:\u002F\u002Fwww.onsrud.com\u002Fimages\u002FSoft%20Plywood.pdf",{"id":193,"title":194},"laetoly-cam-toolpath-basics","Laetoly CAM Toolpath Planning & Conservative Feeds",null,"guides",{"title":5,"description":169},"chip-load-and-feed-rate","zh\u002Fguides\u002Fchip-load-and-feed-rate","guides-chip-load-and-feed-rate","My_Vin7kCfqgzVUaBL96v3W2KcimP1i-Lvlu6MDE2Gg",{"section":196,"slug":198},{"id":204,"title":205,"body":206,"category":167,"date":168,"description":352,"difficulty":170,"draft":171,"duration":172,"extension":173,"featured":171,"image":353,"layout":178,"locale":356,"meta":357,"navigation":181,"path":358,"references":359,"related":195,"section":196,"seo":363,"slug":198,"status":195,"stem":364,"tags":195,"translationKey":200,"updated":195,"video":195,"__hash__":365},"content\u002Fen\u002Fguides\u002Fchip-load-and-feed-rate.md","Chip Load and Feed Rate: A Verification-First Method",{"type":7,"value":207,"toc":344},[208,214,218,221,223,226,240,243,245,248,252,256,259,265,268,272,275,278,282,286,289,292,296,319,323,327,341],[10,209,211],{"level":12,"title":210},"Chip load is a calculation target, not a permission to cut",[15,212,213],{},"The formula below helps explain parameter relationships. It does not prove that a machine, tool, material, or workholding setup can carry the resulting load. Use the tool maker's data and a scrap test before a production cut.",[19,215,217],{"id":216},"the-relationship","The relationship",[15,219,220],{},"For a rotating cutter, nominal chip load per tooth can be estimated as:",[15,222,27],{},[15,224,225],{},"where:",[32,227,228,231,234,237],{},[35,229,230],{},"(f_z) is nominal chip load per tooth in mm\u002Ftooth;",[35,232,233],{},"(V_f) is programmed feed rate in mm\u002Fmin;",[35,235,236],{},"(n) is spindle speed in RPM;",[35,238,239],{},"(z) is the number of effective cutting flutes.",[15,241,242],{},"The rearranged feed-rate relationship is:",[15,244,52],{},[15,246,247],{},"This is a relationship between programmed variables. It is not a universal material chart and it does not include every factor that affects actual chip thickness.",[57,249],{"alt":250,"caption":251,"src":61},"Spindle speed, feed rate, flute count, and chip load shown as linked variables","Schematic: the variables are linked; actual cutting force also depends on axial and radial engagement.",[19,253,255],{"id":254},"a-small-example-not-a-recommendation","A small example, not a recommendation",[15,257,258],{},"Suppose a two-flute tool is programmed at 18,000 RPM and 1,800 mm\u002Fmin:",[70,260,263],{"className":261,"code":262,"language":75,"meta":76},[73],"chip load = 1,800 \u002F (18,000 × 2)\nchip load = 0.05 mm\u002Ftooth\n",[78,264,262],{"__ignoreMap":76},[15,266,267],{},"The arithmetic is useful for checking a program. It does not tell you whether the tool is sharp, whether the machine is rigid enough, or whether the material and workholding can tolerate the cut. Changing the flute count without changing the feed changes the result.",[19,269,271],{"id":270},"nominal-chip-load-is-not-the-whole-cut","Nominal chip load is not the whole cut",[15,273,274],{},"The formula assumes a simple relationship between the feed and the cutting edges. Actual chip thickness changes with radial engagement, axial depth, cutter geometry, runout, tool sharpness, material, climb or conventional direction, and the rigidity of the machine.",[15,276,277],{},"Low radial engagement can reduce the actual maximum chip thickness. Do not apply a fixed “increase feed by 10–30%” rule without a source for the exact tool and operation. When the engagement changes, use the tool maker's chip-thinning guidance if available, then validate the result on scrap.",[57,279],{"alt":280,"caption":281,"src":96},"Feed rate highlighted in a chip-load relationship diagram","Schematic: changing depth, stepover, or feed changes the load; recalculate and test rather than applying a fixed correction.",[19,283,285],{"id":284},"material-scope-matters","Material scope matters",[15,287,288],{},"Wood, plywood, MDF, plastics, aluminum, and fiber-reinforced composites do not share one safe chip-load window. Tool geometry, coating, spindle capability, machine rigidity, dust or chip extraction, and workholding all matter.",[15,290,291],{},"For Laetoly's desktop-CNC examples, begin with the documented wood or plywood baseline and keep the test cut shallow. This page does not authorize aluminum or composite cutting on an unverified machine. For plastics, avoid treating “more feed” as the only correction: chip evacuation and heat removal are part of the setup. For metals and composites, use material- and tool-specific manufacturer data and an appropriate machine assessment.",[19,293,295],{"id":294},"a-verification-loop","A verification loop",[110,297,298,301,304,307,310,313,316],{},[35,299,300],{},"Record the tool diameter, flute count, stickout, material, machine, and workholding.",[35,302,303],{},"Select a starting chip-load range from the tool maker or an approved internal note.",[35,305,306],{},"Calculate the programmed feed and confirm it is inside the machine and spindle limits.",[35,308,309],{},"Reduce depth and engagement for the first scrap test.",[35,311,312],{},"Run a spindle-off clearance check, then cut only a small test feature.",[35,314,315],{},"Observe chips, sound, edge quality, movement, heat, and missed steps.",[35,317,318],{},"Change one variable at a time and record the result.",[57,320],{"alt":321,"caption":322,"src":137},"Consistent chips from a balanced wood test cut","Schematic: chip appearance is evidence to consider, not a standalone pass\u002Ffail measurement.",[19,324,326],{"id":325},"what-to-do-when-the-cut-looks-wrong","What to do when the cut looks wrong",[32,328,329,332,335,338],{},[35,330,331],{},"Fine dust or rubbing: stop and reassess tool sharpness, feed, RPM, engagement, and extraction. Do not blindly lower the feed.",[35,333,334],{},"Burning or melted material: stop the cut and investigate heat, chip evacuation, tool geometry, and material compatibility.",[35,336,337],{},"Chatter or deflection: reduce engagement, shorten stickout, improve workholding, or use a more rigid setup before chasing a number.",[35,339,340],{},"Broken tool or lost steps: treat the setup as unverified. Inspect the workpiece, clamp, tool, and controller state before any retry.",[15,342,343],{},"Chip load makes parameter changes explainable. It does not remove the need for machine limits, conservative testing, and an explicit stop condition.",{"title":76,"searchDepth":159,"depth":159,"links":345},[346,347,348,349,350,351],{"id":216,"depth":159,"text":217},{"id":254,"depth":159,"text":255},{"id":270,"depth":159,"text":271},{"id":284,"depth":159,"text":285},{"id":294,"depth":159,"text":295},{"id":325,"depth":159,"text":326},"How feed rate, spindle speed, flute count, and engagement relate, with a conservative validation loop for desktop CNC routing.",{"src":175,"alt":354,"caption":355},"Unbranded carbide cutter making a shallow test pass in plywood with visible chips","Editorial cover image; the cutting scene is illustrative and does not specify a machine setting.","en",{},"\u002Fen\u002Fguides\u002Fchip-load-and-feed-rate",[360,361,362],{"id":185,"title":186,"url":187},{"id":189,"title":190,"url":191},{"id":193,"title":194},{"title":205,"description":352},"en\u002Fguides\u002Fchip-load-and-feed-rate","NA2dVBYtfSwMdYhxSKEIKyjbX64E96Aw6snsE3l-zkU",1789009347661]