Disclosed is a rocker type polishing apparatus and method for full-aperture deterministic polishing of a planar part. The apparatus includes a control system, a substrate, a lifting plate, a polishing module and a measuring module. The polishing module and the measuring module are arranged on the substrate. The lifting plate is arranged between the polishing module and the measuring module. The polishing module includes a rocker mechanism, a polishing pad surface dressing mechanism, a polishing pad surface profile measuring apparatus and a continuous polishing pad mechanism. Considering the specific surface profile of the planar part, the present invention makes the material removal rate distribution of the planar part and the surface profile of the planar part be in the normalized mirror symmetry relationship by controlling the material removal rate distribution on the surface of the planar part, thereby implementing the deterministic polishing of the planar part and ensuring the efficient convergence of the surface profile of the planar part in the polishing process. The present invention completes the high-precision polishing process by using the low-cost operation manner, thereby reducing the device cost.

Disclosed is a rocker type polishing apparatus and method for full-aperture deterministic polishing of a planar part. The apparatus includes a control system, a substrate, a lifting plate, a polishing module and a measuring module. The polishing module and the measuring module are arranged on the substrate. The lifting plate is arranged between the polishing module and the measuring module. The polishing module includes a rocker mechanism, a polishing pad surface dressing mechanism, a polishing pad surface profile measuring apparatus and a continuous polishing pad mechanism. Considering the specific surface profile of the planar part, the present invention makes the material removal rate distribution of the planar part and the surface profile of the planar part be in the normalized mirror symmetry relationship by controlling the material removal rate distribution on the surface of the planar part, thereby implementing the deterministic polishing of the planar part and ensuring the efficient convergence of the surface profile of the planar part in the polishing process. The present invention completes the high-precision polishing process by using the low-cost operation manner, thereby reducing the device cost.

A processing apparatus includes a processing unit. The processing unit includes a spindle, a spindle housing having an air bearing for rotatably supporting the spindle by using air, and a tool mounted on the front end of the spindle. The spindle housing has an air supply passage for supplying air to the air bearing, an air supply port connected to the air supply passage, an air discharge passage, and an air discharge port. The air supply port is connected through an air supply line to an air source. The air supply line is provided with a pressure gauge and a flowmeter. A first allowable value is previously set for the pressure to be detected by the pressure gauge, and a second allowable value is previously set for the flow rate to be detected by the flowmeter.

A processing apparatus includes a processing unit. The processing unit includes a spindle, a spindle housing having an air bearing for rotatably supporting the spindle by using air, and a tool mounted on the front end of the spindle. The spindle housing has an air supply passage for supplying air to the air bearing, an air supply port connected to the air supply passage, an air discharge passage, and an air discharge port. The air supply port is connected through an air supply line to an air source. The air supply line is provided with a pressure gauge and a flowmeter. A first allowable value is previously set for the pressure to be detected by the pressure gauge, and a second allowable value is previously set for the flow rate to be detected by the flowmeter.

A power tool that includes a tool body housing, a drive system, a tool head and a connection system. The drive system is housed in the tool body housing. The tool head, which is configured to perform work on a work piece, includes a tool head housing and an input member that is driven by the drive system when the tool head is coupled to the tool body housing. The tool head can be engaged to the tool body housing in at least two pre-defined and distinct orientations. The connection system secures the tool head to the tool body housing in each of the at least two pre-defined and distinct orientations.

A power tool that includes a tool body housing, a drive system, a tool head and a connection system. The drive system is housed in the tool body housing. The tool head, which is configured to perform work on a work piece, includes a tool head housing and an input member that is driven by the drive system when the tool head is coupled to the tool body housing. The tool head can be engaged to the tool body housing in at least two pre-defined and distinct orientations. The connection system secures the tool head to the tool body housing in each of the at least two pre-defined and distinct orientations.

A belt sander includes: a power unit having a rotating shaft; a rotatable belt casing defining a track groove that is open toward the power unit and that surrounds the rotating shaft, and having a plurality of engaging portions that are arranged around the track groove; an abrasive belt drivable by the rotating shaft; and a positioning unit including a movable positioning member that is adapted for manual operation, and an engaging member that is co-movably connected to the positioning member. The positioning unit is movable between an engaging position, where the engaging member is engaged with a selected one of the engaging portions, and a releasing position, where the engaging member is disengaged from the engaging portions.

A belt sander includes: a power unit having a rotating shaft; a rotatable belt casing defining a track groove that is open toward the power unit and that surrounds the rotating shaft, and having a plurality of engaging portions that are arranged around the track groove; an abrasive belt drivable by the rotating shaft; and a positioning unit including a movable positioning member that is adapted for manual operation, and an engaging member that is co-movably connected to the positioning member. The positioning unit is movable between an engaging position, where the engaging member is engaged with a selected one of the engaging portions, and a releasing position, where the engaging member is disengaged from the engaging portions.

A quill includes a fixing side quill to be fixed to a spindle housing and a leading end side quill having a whetstone mounted thereon and removably connectable to the fixing side quill. In the connecting portions between the fixing side quill and the leading end side quill, faces that are perpendicular to the axis of the quill are combined with each other. A first drive shaft is provided within the fixing side quill, and a second drive shaft, rotatable integrally with the whetstone, is provided within the leading end side quill. The first drive shaft and second drive shaft are removably connected to each other.

A quill includes a fixing side quill to be fixed to a spindle housing and a leading end side quill having a whetstone mounted thereon and removably connectable to the fixing side quill. In the connecting portions between the fixing side quill and the leading end side quill, faces that are perpendicular to the axis of the quill are combined with each other. A first drive shaft is provided within the fixing side quill, and a second drive shaft, rotatable integrally with the whetstone, is provided within the leading end side quill. The first drive shaft and second drive shaft are removably connected to each other.