Apparatus for manufacturing three-dimensional objects
Apparatus ( 1 ) for additively manufacturing of three-dimensional objects ( 2 ) by means of successive layerwise selective irradiation and consolidation of layers of a build material ( 3 ) which can be consolidated by means of an energy beam, wherein a direct measuring unit ( 4 ) is provided for determining a position and/or a travel distance of at least one moveable component ( 5 ) of the apparatus ( 1 ).
1. An apparatus for additively manufacturing of three-dimensional objects by successive layerwise selective irradiation and consolidation of layers of a build material with an energy beam, comprising:
a direct measuring unit configured for determining a position and/or a travel distance of at least one moveable component of the apparatus; and
a coupling element configured to couple the direct measuring unit with the at least one moveable component, wherein the coupling element comprises a redirection element configured to redirect a movement of the at least one moveable component directed along a first movement direction and/or a first axis into a movement of the direct measuring unit along a second movement direction and/or a second axis.
2. The apparatus according to claim 1 , wherein the coupling element is further configured to transfer a pushing and/or a pulling force.
3. The apparatus according to claim 1 , wherein the coupling element comprises a flexible material and/or a low elongation material.
4. The apparatus according to claim 1 , wherein the coupling element comprises a rope and/or a wire and/or a chain and/or a rod and/or a spring and/or a pneumatic element and/or a hydraulic element.
5. The apparatus according to claim 1 , wherein the redirection element is arranged as a redirection roll guiding and/or redirecting the coupling element.
6. The apparatus according to claim 1 , wherein the coupling element is preloaded.
7. The apparatus according to claim 6 , wherein the coupling element is preloaded via a pneumatic pressure and/or a hydraulic pressure.
8. The apparatus according to claim 6 , by further comprising:
at least one sensor configured to determine at least one ambient parameter; and
a control unit configured to control the preload of the coupling element dependent on the at least one determined ambient parameter.
9. The apparatus according to claim 8 , wherein the ambient parameter comprises at least one of a temperature or a humidity.
10. The apparatus according to claim 6 , wherein the coupling element is preloaded via a spring and/or a supplementary weight.
11. The apparatus according to claim 1 wherein the direct measuring unit comprises at least one direct measuring element extending in a direction and/or along an axis different from a movement direction of the at least one moveable component.
12. The apparatus according to claim 1 , wherein the at least one moveable component is driven or drivable via at least one telescopic spindle.
13. The apparatus according to claim 1 , wherein the direct measuring unit further comprises an optical measuring unit.
14. The apparatus according to claim 1 , wherein the direct measuring unit further comprises a glass scale.
15. The apparatus according to claim 1 , wherein the at least one moveable component is a component of a carrying unit.
16. The apparatus according to claim 15 , wherein the at least one moveable component is a build plate.
17. The apparatus according to claim 1 , wherein the coupling element is further configured to transfer a pushing and a pulling force.