數控機床熱變形問題及其控制

探索號QM

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7 l% u5 k9 }% H) E- bokuma提出了“與熱共舞”的概念（thermal-friendly concept），將主軸，機身植入熱傳感器，并（據說）采用“熱對稱”（我的理解就是設計時植入某種熱變形與加工時產生的熱變形互相抵消）方法，來控制加工精度。所提供的實驗數據顯示x軸的變形量可以控制到8個微米(0.008mm)，y軸5個微米(0.005mm)，z軸6個微米(0.006mm)。
Mazak則有相應的“智能熱屏蔽”的概念（intelligent thermal shield），據稱其控制各個方向的變形量也是在10個微米(0.01mm)以下。
還有瑞士一家，也是有相應的控制熱變形量的方法。相信中國也會跟進。
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) |8 J: }1 K. i2 V! T+ v( `英雄不問出路，各家自有招數。

1 D. @2 [. K& G3 H  w9 i我的問題是想問各位大俠，針對數控連續高速量產所引起的熱變形，有什么經歷可以參考，有什么想法可以探討？


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探索號QM

Thermo-Friendly Concept—An Overview
/ Z- |. G5 b$ U" _" j/ DWe don’t fight thermal growth; we work with it. Thermo-Friendly Concept helps improve quality, save time and reduce the incidence of waste product by controlling the “uncontrollable.”
: k/ d2 ~" N! }Okuma's Thermo-Friendly Concept combines control technology and machine design to both minimize the amount of heat generated and deal with the heat that cannot be eliminated. Coupled with extremely accurate thermal deformation compensation, the benefit is unrivaled dimensional stability over long, continuous runs. You no longer waste time and money warming machines up, thus requiring manual adjustments for temperature changes.
Machine Design—With simple machine designs and construction that equalize ambient temperatures, deformation is predictable and complex torsion or tilting is controlled.
Control Technology—Okuma's Thermal Active Stabilizer has two components: Spindle (TAS-S) and Construction (TAS-C).
TAS-S considers not only spindle temperature information but also spindle rotation, spindle speed changes, and spindle stoppage. The result is that deformation of the spindle and Z-axis are accurately controlled.
TAS-C is based on machine thermal characteristics. With appropriately placed temperature sensors and feed axis position data TAS-C will predict and accurately control thermal deformation in machine construction when ambient temperatures change.

源波403

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櫻木花道1

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木子12

受教了，頂一下

清飛揚

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caesar1724

學習學習

fffmysmbkn

最近也在關注這個問題，只能從零件尺寸變化來反映趨勢了。不知道還在找其他方法探索熱變形問題，共勉
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jesuisdj

學習了

dusurong

學習了