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Improving Your Results in Diamond Turning: Proven Performance

Temperature control boosted cut accuracy of a part by a factor of 7.

It's important to know that errors caused by thermal effects are the number one source of error in precision machining. In the figure below an 80mm flat was diamond turned in a non-temperature controlled environment over a period of 5 hours.

Figure 1


Figure 1

The figure above is an interferometric analysis of the flatness of the part. The part profile displayed the effects of +/- 1 ºC cycling of the room temperature  in the form of 0.327 micrometer p-v waves.  

To eliminate the waviness, temperature control was used:

Figure 2


Figure 2

Figure 2 displays the result of cutting the same part under identical conditions -- but with +/- 0.1 ºC temperature control.

The waviness is gone, and the part flatness was improved by a factor of 7 to 0.046 micrometers PV.