Thermal displacement compensation apparatus

A technology of thermal displacement and workpiece, applied in the direction of biological neural network model, measurement/indicating equipment, program control, etc., can solve the problems of hindering shape inspection and unrealistic, and achieve the effect of high-precision measurement error

Active Publication Date: 2019-01-15
FANUC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, it is impractical to use an adhesive type temperature sensor (contact sensor such as a thermocouple, etc.) when performing shape inspection of a workpiece.
In addition, there is a problem that technical knowledge or trial and error are required in order to determine the measurement position of the temperature (how many temperature sensors should be pasted on the workpiece).

Method used

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Embodiment Construction

[0026] Figure 1A It is a schematic hardware configuration diagram showing main parts of the thermal displacement correction device of the first embodiment.

[0027] The CPU 11 included in the thermal displacement correction device 1 of the present embodiment is a processor that controls the thermal displacement correction device 1 as a whole. The CPU 11 reads the system program stored in the ROM 12 via the bus 20, and controls the entire thermal displacement correction device 1 according to the system program. Temporary calculation data, display data, and various data input from a control device and a shape measuring device described later are temporarily stored in the RAM 13 .

[0028] The nonvolatile memory 14 is configured, for example, as a memory that is backed up by an unillustrated battery or the like and maintains a storage state even if the power supply of the thermal displacement correction device 1 is cut off, and stores various programs and programs input through ...

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Abstract

A thermal displacement compensation apparatus for compensating a dimensional measurement error due to a thermal displacement of a workpiece, including a machine learning device for learning shape measurement data at the time of inspection of the workpiece, wherein the machine learning device observes image data showing the temperature distribution of the workpiece and shape data after machining asstate variables representing the current state of the environment, acquires judgment data indicating the shape measurement data at the time of inspection, and learns the image data showing the temperature distribution of the workpiece and shape data after machining and the shape measurement data at the time of inspection in association with each other using the observed state variables and the acquired judgment data.

Description

technical field [0001] The present invention relates to a thermal displacement correction device, and more particularly to a technology capable of easily and accurately correcting measurement errors due to thermal displacement of a workpiece. Background technique [0002] The workpiece expands or contracts depending on the temperature. Therefore, the dimensional inspection of the processed workpiece needs to be performed in a state where sufficient thermal balance is achieved (or at a predetermined temperature set in consideration of the usage environment of the workpiece, etc.). Therefore, an environment and time for bringing the workpiece to an optimum temperature for inspection are required. [0003] Japanese Unexamined Patent Application Publication No. 2002-224935 discloses a method of correcting the measured dimensions of the workpiece using a neural network that inputs the temperature of the workpiece measured by a contact temperature sensor and outputs a thermal dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/20
CPCB23Q17/20G05B19/404G05B13/027G05B2219/32335G05B2219/33034G05B2219/49207G06N3/08
Inventor 佐伯正博
Owner FANUC LTD
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