A machine tool includes a workpiece spindle unit (15) including a workpiece spindle (17) and a workpiece spindle motor (20) and includes a tool spindle unit (25) including a tool spindle (27) and a tool spindle motor. The machine tool further includes a first-axis movement mechanism (6) and a second-axis movement mechanism (9) relatively moving, in a plane including an axis of the workpiece spindle (17) and an axis of the tool spindle (27), the workpiece spindle unit (15) and the tool spindle unit (25) in a first axis direction and a second axis direction intersecting the first axis direction, respectively, and further includes a controller. The tool spindle unit (25) is arranged such that the axis of the tool spindle (27) intersects the axis of the workpiece spindle (17). The controller relatively moves the workpiece spindle unit (15) and the tool spindle unit (25) along the axis of the tool spindle (27) through combined operation of the first-axis movement mechanism (6) and second-axis movement mechanism (9), thereby grinding a workpiece (W) with a cup grindstone (T).

A machine tool includes a workpiece spindle unit (15) including a workpiece spindle (17) and a workpiece spindle motor (20) and includes a tool spindle unit (25) including a tool spindle (27) and a tool spindle motor. The machine tool further includes a first-axis movement mechanism (6) and a second-axis movement mechanism (9) relatively moving, in a plane including an axis of the workpiece spindle (17) and an axis of the tool spindle (27), the workpiece spindle unit (15) and the tool spindle unit (25) in a first axis direction and a second axis direction intersecting the first axis direction, respectively, and further includes a controller. The tool spindle unit (25) is arranged such that the axis of the tool spindle (27) intersects the axis of the workpiece spindle (17). The controller relatively moves the workpiece spindle unit (15) and the tool spindle unit (25) along the axis of the tool spindle (27) through combined operation of the first-axis movement mechanism (6) and second-axis movement mechanism (9), thereby grinding a workpiece (W) with a cup grindstone (T).

A machine tool comprises first and second support arms, and a rigid structure which couples the first support arm to the second support arm. A first rotary drive is operable to rotate the first support arm and the rigid structure relative to each other about a first rotational reference axis, and a second rotary drive is operable to rotate the second support arm and the rigid structure relative to each other about a second rotational reference axis, wherein the first and second rotational reference axes are parallel and spaced apart by a fixed distance. A control arrangement is configured to control the first and second rotary drives such that a workpiece mount carried by the second support arm follows a predetermined path relative to a tool mount carried by the first support arm in a plane perpendicular to the rotational reference axes.

A machine tool comprises first and second support arms, and a rigid structure which couples the first support arm to the second support arm. A first rotary drive is operable to rotate the first support arm and the rigid structure relative to each other about a first rotational reference axis, and a second rotary drive is operable to rotate the second support arm and the rigid structure relative to each other about a second rotational reference axis, wherein the first and second rotational reference axes are parallel and spaced apart by a fixed distance. A control arrangement is configured to control the first and second rotary drives such that a workpiece mount carried by the second support arm follows a predetermined path relative to a tool mount carried by the first support arm in a plane perpendicular to the rotational reference axes.

The present disclosure relates to a floor surfacing machine (100) comprising drive wheels (171, 172) and a planetary head (140) with one or more satellite grinding heads (120), A first drive motor (110) is arranged to drive the planetary head (140) and a second drive motor (130, 430) is arranged to drive the one or more satellite grinding heads (120). The first drive motor (110) is arranged to be directly powered only by means of a re-chargeable internal electrical power source (310) comprised in the floor surfacing machine (100).

A surface processing device includes a machining mechanism and a driving mechanism driving the machining mechanism to polish a workpiece. The machining mechanism includes a machining assembly and a first transmission shaft eccentrically coupled with the machining assembly at a first end. The first transmission shaft rotates to bring the machining assembly into revolving around the first transmission shaft. The driving mechanism includes a motor connected to a second end of the first transmission shaft for outputting power to the machining mechanism. The surface processing device provides smooth machining without the noise of a pneumatically-powered tool.

A surface processing device includes a machining mechanism and a driving mechanism driving the machining mechanism to polish a workpiece. The machining mechanism includes a machining assembly and a first transmission shaft eccentrically coupled with the machining assembly at a first end. The first transmission shaft rotates to bring the machining assembly into revolving around the first transmission shaft. The driving mechanism includes a motor connected to a second end of the first transmission shaft for outputting power to the machining mechanism. The surface processing device provides smooth machining without the noise of a pneumatically-powered tool.

A grinding machine includes a main part and an end case. A driving unit is connected to the end case and includes a first motor which has an output shaft with a groove. A grinding unit is connected to the end case, and cantilevered above the main part. The grinding unit includes a grinding wheel set which has a central axle with a slide. The slide is located in the groove of the output shaft of the first motor. A driving wheel is connected to the central axle. An adjustment device includes a second motor which drives an eccentric unit that has an eccentric axle, and the eccentric axle extends through a bearing which is located in a recess formed to the driving wheel. The driving wheel is driven by the eccentric unit to move the grinding wheel set of the grinding unit left and right.

An adapter plate for use with a floor finishing machine for coupling abrasive drive plates to the spider arms of the floor finishing machine which includes a plurality of stamped plate components which when joined together form a polygon on which is mounted a plurality of hub members in which shafts are journaled for rotation in a spherical bearing. The shafts are, in turn, coupled to the abrasive drive plates.

An adapter plate for use with a floor finishing machine for coupling abrasive drive plates to the spider arms of the floor finishing machine which includes a plurality of stamped plate components which when joined together form a polygon on which is mounted a plurality of hub members in which shafts are journaled for rotation in a spherical bearing. The shafts are, in turn, coupled to the abrasive drive plates.