数控机床热变形问题及其控制

探索号QM

$ a; X! \/ T. G( C' S
okuma提出了“与热共舞”的概念（thermal-friendly concept），将主轴，机身植入热传感器，并（据说）采用“热对称”（我的理解就是设计时植入某种热变形与加工时产生的热变形互相抵消）方法，来控制加工精度。所提供的实验数据显示x轴的变形量可以控制到8个微米(0.008mm)，y轴5个微米(0.005mm)，z轴6个微米(0.006mm)。
Mazak则有相应的“智能热屏蔽”的概念（intelligent thermal shield），据称其控制各个方向的变形量也是在10个微米(0.01mm)以下。
+ z$ i, a3 ~- N3 L还有瑞士一家，也是有相应的控制热变形量的方法。相信中国也会跟进。

  k8 S8 c; [" t. I英雄不问出路，各家自有招数。
1 @1 p' A* J' x
我的问题是想问各位大侠，针对数控连续高速量产所引起的热变形，有什么经历可以参考，有什么想法可以探讨？
5 D$ ~9 S( ?$ d$ i$ n$ b. j

探索号QM

Thermo-Friendly Concept—An Overview
2 e1 k4 y6 ]* D$ J/ @We 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.”
8 n' r# m. `( x9 bOkuma'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.
9 G( ]/ i: @' W) ?8 C3 _, ]6 yMachine Design—With simple machine designs and construction that equalize ambient temperatures, deformation is predictable and complex torsion or tilting is controlled.
7 `+ C+ _# N1 c8 i6 _* EControl 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

学习

樱木花道1

学习

木子12

受教了，顶一下

清飞扬

学习

caesar1724

学习学习

fffmysmbkn

最近也在关注这个问题，只能从零件尺寸变化来反映趋势了。不知道还在找其他方法探索热变形问题，共勉

jesuisdj

学习了

dusurong

学习了
! r# i, w" R1 G. b" P; O