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Siemens SINUMERIK 840C User Manual

Siemens SINUMERIK 840C
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Contents
Page
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
1.2 Measurement variants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.2.1 Measurement variants for turning machines . . . . . . . . . . . . . . . . . . . . 1–2
1.2.2 Measurement variants for milling machines and machining centres . . . . 1–4
1.3 Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–7
1.3.1 Multidirectional probe (3D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–8
1.3.2 Bidirectional probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–8
1.3.3 Monodirectional probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–8
1.4 Calibrating tool, workpiece probe in the TOA memory . . . . . . . . . . . . . 1–9
1.4.1 Assignment of calibrating tool in the TOA memory for turning machines 1–9
1.4.2 Workpiece probe in the TOA memory for turning machines . . . . . . . . . 1–10
1.4.3 Workpiece probe in the TOA memory for milling machines and
machining centres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–13
1.5 Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–14
1.5.1 Probe signal evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–14
1.5.2 In-process measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–15
1.5.3 Measuring accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–17
1.5.4 Outline flowchart for workpiece measurement . . . . . . . . . . . . . . . . . . . 1–18
1.6 Measuring strategy and correction value determination . . . . . . . . . . . . . 1–20
1.6.1 Types of dimensional deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–20
1.6.2 Averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–21
1.7 Tolerance parameters (R33, R34, R36, R37, R40/R41) . . . . . . . . . . . . 1–23
1.7.1 Tolerance parameters for workpiece measurement . . . . . . . . . . . . . . . 1–24
1.7.2 Tolerance parameters for tool measurement . . . . . . . . . . . . . . . . . . . . 1–25
1.8 Plane definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–26
1.9 Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–27
1.9.1 Logging via logging module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–27
1.9.2 Logging via CP315 with the SINUMERIK 840/880 . . . . . . . . . . . . . . . . 1–28
1.9.2.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–28
1.9.2.2 Configuring the form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–29
1.9.2.3 Data transmission between NC and PLC . . . . . . . . . . . . . . . . . . . . . . 1–33
1.9.2.4 Description of transfer parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–35
1.9.2.5 Error messages of logging function . . . . . . . . . . . . . . . . . . . . . . . . . . 1–39
1.9.2.6 Example demonstrating the logging of measurement results for the
SINUMERIK 840/880 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–39
1.10 Notes to ensure smooth running of the measuring cycles . . . . . . . . . . . 1–44
1.11 Reference points on machine and workpiece . . . . . . . . . . . . . . . . . . . 1–45
2 Defining Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
2.1 R parameters used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
2.2 R10 Offset number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
2.2.1 R10 Tool offset memory number (workpiece measurement) . . . . . . . . . 2–1
2.2.1.1 D number known: Relative D number . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
2.2.1.2 D number unknown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
2.2.2 R10 ZO memory number (ZO determination) . . . . . . . . . . . . . . . . . . . 2–2
2.3 R11 Empirical value/average value . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2

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Siemens SINUMERIK 840C Specifications

General IconGeneral
BrandSiemens
ModelSINUMERIK 840C
CategoryControl Unit
LanguageEnglish

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