An assembly machine comprising: a main body frame; a substrate conveyance device that is supported by the main body frame, and is configured to convey a substrate in a conveyance direction; a plurality of component supply devices that are supported by the main body frame lined up in a direction that is parallel to the conveyance direction, and respectively configured to supply a single kind of component; a work device that is configured to perform work that includes at least mounting work, which is configured to receive the components from the component supply devices, and to mount the components onto the substrate that is carried into the work region by the substrate conveyance device; and a control device that is configured to control at least the work device, wherein the assembly machine is configured to assemble a target device by mounting a plurality of components, which are supplied from the plurality of component supply devices, onto the substrate that is carried into a work region by the substrate conveyance device, the assembly machine being characterized in that the work device includes an articulated robot, which includes an arm section that includes a plurality of link members (48, 50), which are connected so as to be relatively rotatable with respect to one another at a plurality of joints, and a base end section, which is held by a base platform through a rotating body in a manner in which the arm section is capable of revolving about a vertical axis, and a hand that is attached to a free end section of the arm section so as to be relatively rotatable about a horizontal axis line. a main body frame; a substrate conveyance device that is supported by the main body frame, and is configured to convey a substrate in a conveyance direction; a plurality of component supply devices that are supported by the main body frame lined up in a direction that is parallel to the conveyance direction, and respectively configured to supply a single kind of component; a work device that is configured to perform work that includes at least mounting work, which is configured to receive the components from the component supply devices, and to mount the components onto the substrate that is carried into the work region by the substrate conveyance device; and a control device that is configured to control at least the work device, wherein the assembly machine is configured to assemble a target device by mounting a plurality of components, which are supplied from the plurality of component supply devices, onto the substrate that is carried into a work region by the substrate conveyance device, the assembly machine being characterized in that the work device includes an articulated robot, which includes an arm section that includes a plurality of link members (48, 50), which are connected so as to be relatively rotatable with respect to one another at a plurality of joints, and a base end section, which is held by a base platform through a rotating body in a manner in which the arm section is capable of revolving about a vertical axis, and a hand that is attached to a free end section of the arm section so as to be relatively rotatable about a horizontal axis line.