Fabricating apparatus, control device, and fabricating method

1. A fabricating apparatus comprising:

a fabricating device to fabricate a plurality of predetermined fabrication layers according to fabrication data of a three-dimensional fabrication object;

a memory to store a predetermined corrected shape according to a predetermined shape of a fabrication layer; and

processing circuitry configured to:

measure a planar shape including at least one corner of an already-fabricated layer to obtain measurement data; and

correct fabrication data of a subsequent fabrication layer of the plurality of predetermined fabrication layers based on an error between the measured planar shape of the already-fabricated layer and fabrication data of the corresponding layer of the plurality of predetermined fabrication layers; and

fabricate the subsequent fabrication layer according to the corrected fabrication data;

wherein the processing circuitry is configured to perform the correcting fabrication data according to the predetermined corrected shape stored in memory where a part or whole of the measured planar shape of the already-fabricated layer matches the predetermined shape of a fabrication layer stored in memory.

2. The fabricating apparatus according to claim 1 ,

wherein the processing circuitry is configured to measure a dummy fabrication object fabricated by the fabricating device and revise the predetermined corrected shape according to a measurement result of the dummy fabrication object.

3. The fabricating apparatus according to claim 2 ,

wherein the dummy fabrication object is a fabrication object formed by line drawing.

4. The fabricating apparatus according to claim 3 ,

wherein the fabrication object formed by line drawing is a line drawing having a lifted portion.

5. The fabricating apparatus according to claim 1 , wherein the processing circuitry is configured to measure a three-dimensional shape of the fabrication object and calculates the planar shape of the plurality of fabrication layers.

6. A control device to control operation of a fabricating apparatus that fabricates a three-dimensional object having a plurality of predetermined fabrication layers, the control device comprising:

a memory to store a predetermined corrected shape according to a predetermined shape of a fabrication layer; and

processing circuitry configured to:

correct fabrication data of a subsequent fabrication layer of the plurality of predetermined fabrication layers according to a difference between a measured planar shape of an already-fabricated layer and fabrication data of the corresponding layer of the plurality of predetermined fabrication layers; and

issue control commands to the fabricating apparatus to carry out fabrication of the subsequent fabrication layer onto the already-fabricated layer according to the corrected fabrication data;

wherein the processing circuitry is configured to perform the correcting fabrication data according to the predetermined corrected shape stored in memory where a part or whole of the measured planar shape of the already-fabricated layer matches the predetermined shape of a fabrication layer stored in memory.

7. The control device according to claim 6 ,

wherein the processing circuitry is configured to measure a dummy fabrication object fabricated by the fabricating device and revise the predetermined corrected shape according to a measurement result of the dummy fabrication object.

8. The control device according to claim 7 ,

wherein the dummy fabrication object is a fabrication object formed by line drawing.

9. The control device according to claim 8 ,

wherein the fabrication object formed by line drawing is a line drawing having a lifted portion.

10. The control device according to claim 6 ,

wherein the processing circuitry is configured to measure a three-dimensional shape of the fabrication object and calculates the planar shape of the plurality of fabrication layers.

11. A method for fabricating a three-dimensional object, the method comprising:

fabricating a plurality of predetermined fabrication layers of a three-dimensional object according to fabrication data of the three-dimensional object;

measuring a planar shape including at least one corner of an already-fabricated layer to obtain measurement data;

correcting fabrication data of a subsequent fabrication layer of the predetermined plurality of fabrication layers according to a difference between the measured planar shape of the already-fabricated layer and fabrication data of the corresponding layer of the plurality of predetermined fabrication layers; and

fabricating the subsequent fabrication layer according to the corrected fabrication data;

wherein the correcting fabrication data of the subsequent fabrication layer is corrected according to a predetermined corrected shape where a part or whole of the measured planar shape of the already-fabricated layer matches a predetermined shape of a fabrication layer which corresponds to the predetermined corrected shape.

12. The method according to claim 11 , further comprising:

measuring a dummy fabrication object fabricated by the fabricating device; and

revising the predetermined corrected shape according to a measurement result of the dummy fabrication object.

13. The method according to claim 12 ,

wherein the dummy fabrication object is a fabrication object formed by line drawing.

14. The method according to claim 13 ,

wherein the fabrication object formed by line drawing is a line drawing having a lifted portion.

15. The method according to claim 11 ,

wherein measuring the planar shape including at least one corner of an already-fabricated layer to obtain measurement data further comprises: measuring a three-dimensional shape of the fabrication object and calculating the planar shape of the plurality of fabrication layers.