CoreXY is a technique used to move the printhead of a

3D printer 3D printing, or additive manufacturing, is the construction of a three-dimensional object from a CAD model or a digital 3D model. It can be done in a variety of processes in which material is deposited, joined or solidified under computer ...

or the toolhead in CNC machines in the

horizontal plane Horizontal may refer to: *Horizontal plane, in astronomy, geography, geometry and other sciences and contexts *Horizontal coordinate system, in astronomy *Horizontalism, in monetary circuit theory *Horizontalidad, Horizontalism, in sociology *Hor ...

. The advantage of this technique is that the two motors used to perform the movement in the horizontal plane are stationary and do not have to move themselves, which can result in less moving

mass Mass is an Intrinsic and extrinsic properties, intrinsic property of a physical body, body. It was traditionally believed to be related to the physical quantity, quantity of matter in a body, until the discovery of the atom and particle physi ...

. Instead, drive belts are used which are connected in an intricate way to provide movement in a

Cartesian coordinate system In geometry, a Cartesian coordinate system (, ) in a plane (geometry), plane is a coordinate system that specifies each point (geometry), point uniquely by a pair of real numbers called ''coordinates'', which are the positive and negative number ...

. Compared to conventional Cartesian 3D printers for fused filament, it can provide increased printing speed due to less moving mass.

Movement

For movement along the ''x''-axis, both motors must rotate in the same direction. For movement along the ''y''-axis, the motors must rotate in opposite directions. If only one motor rotates, the movement will be diagonal. The movement can be mathematically described as follows. If ''A'' is the movement of the first motor and ''B'' the movement of the second motor, the movement in the ''x'' and ''y'' directions is given by:

\Delta y &= \tfrac(\Delta A - \Delta B) \end

Compared to conventional printers

Other Cartesian 3D printers which do not use the CoreXY technique most commonly also use two motors for the ''xy''-plane, but where one motor is independently responsible for movement along the ''x''-axis, and the other independently responsible for movement along the ''y''-axis. This is sometimes called a ''Cartesian technique''. "''Bed slinger''" is a Cartesian variant where the build surface moves along the ''y''-axis, and the print head moves along the ''x''-axis, and this technique is used on amongst others the

Prusa i3 The Prusa i3 is a family of fused filament fabrication 3D printers, manufactured by Czech company Prusa Research under the trademarked name Original Prusa i3. Part of the RepRap project, Prusa i3 printers were called the most used 3D printer in ...

and clones.

References

{{reflist Mechanisms (engineering) 3D printing

Movement

Compared to conventional printers

See also

References