Toothed gearwheel single flank total composite error-testing apparatus

Claim 2

Apparatus for testing single-flank total composite error in a bevel gear pair disposed at a required mounting distance, including means for mounting first and second intermeshing bevel gears to be tested, first and second base circle discs of a given diameter independent of the transmission ratio of the bevel gear pair, the two base circle discs being mounted such that the axis of the first and second base circle disc is coaxial with the axis of the first and second bevel gear, respectively, the axes of the base circle discs thereby being perpendicular to each other, the first base circle disc being freely rotatable relative to the first bevel gear, the second base circle disc being connectable rigidly with the second bevel gear, first and second rolling bars disposed perpendicularly to each other and perpendicularly to the axes of the first and second base circle discs, respectively, the first and second rolling bar being slidable without slip on the first and second base circle disc, respectively, a slide being slidably mounted for movement perpendicular to the axis of said first bevel gear, said slide bearing the first rolling bar which is rigidly mounted on the slide so as to be movable therewith, the second rolling bar being rectilinearly movable relative to the slide, a control bar mounted on the slide to be angularly adjustable relative to and in the plane of the slide in accordance with the transmission ratio of the gear pair, the second rolling bar being movable rectilinearly by the control bar, means for driving the slide so as to cause movement of the two rolling bars, the two base circle discs and the two intermeshing bevel gears, and indicating means located between the first base circle disc and the mounting means for the first bevel gear to be responsive to error between rotating motion transmitted to the second bevel gear and the rotating motion produced in the first bevel gear by the intermeshing of the gear pair.

Claim 3

Apparatus according to claim 1, in which the means for mounting the bevel gear pair comprises two mandrels, and the said indicating means are disposed between the mandrel for the first bevel gear and the first base circle disc and are adapted to indicate the angular difference between the rotating motion of the first bevel gear and the first base circle disc.

Claim 4

Apparatus according to claim 1, in which the means for connecting rigidly the second base circle disc with the second bevel gear is a detachable clutch, and a further detachable clutch is disposed between the indicating means and the first bevel gear.

Claim 5

Apparatus for testing single-flank total composite error in a bevel gear pair disposed at a required mounting distance, including means for mounting first and second intermeshing bevel gearS to be tested, first and second base circle discs of a given diameter independent of the transmission ratio of the bevel gear pair, the two base circle discs being mounted such that the axis of the first and second base circle disc is coaxial with the axis of the first and second bevel gear, respectively, the axes of the base circle discs thereby being perpendicular to each other, first and second rolling bars disposed perpendicularly to each other and perpendicularly to the axes of the first and second base circle discs, respectively, the first and second rolling bar being slidable without slip on the first and second base circle disc, respectively, a slide fast with the first rolling bar, said slide being slidably mounted for movement perpendicular to the axis of said first bevel gear a control bar mounted on the slide to be angularly adjustable relative to and in the plane of the slide in accordance with the transmission ratio of the gear pair, the second rolling bar being movable rectilinearly by the control bar, drive means for causing movement of the slide, the first rolling bar which is fast with the slide and the control bar mounted on the slide and thereby causing said rectilinear movement of the second rolling bar, whereby to rotate the two base circle discs, the first base circle disc being freely rotatable relative to the first bevel gear, the second base circle disc being freely rotatable relative to the second bevel gear and means being provided for directly coupling the second base circle disc with the second bevel gear to drive the second bevel gear and also drive the first bevel gear intermeshing with the second bevel gear, and indicating means located between the first base circle disc and the mounting means for the first bevel gear for comparing the rotating motion of the first base circle disc with the rotating motion of the first bevel gear.

Claim 6

Apparatus for testing single-flank total composite error in a bevel gear pair disposed at a required mounting distance, including means for mounting first and second intermeshing bevel gearS to be tested, first and second base circle discs of a given diameter independent of the transmission ratio of the bevel gear pair, the two base circle discs being mounted such that the axis of the first and second base circle disc is coaxial with the axis of the first and second bevel gear, respectively, the axes of the base circle discs thereby being perpendicular to each other, first and second rolling bars disposed perpendicularly to each other and perpendicularly to the axes of the first and second base circle discs, respectively, the first and second rolling bar being slidable without slip on the first and second base circle disc, respectively, a slide fast with the first rolling bar, said slide being slidably mounted for movement perpendicular to the axis of said first bevel gear a control bar mounted on the slide to be angularly adjustable relative to and in the plane of the slide in accordance with the transmission ratio of the gear pair, the second rolling bar being movable rectilinearly by the control bar, drive means for causing movement of the slide, the first rolling bar which is fast with the slide and the control bar mounted on the slide and thereby causing said rectilinear movement of the second rolling bar, whereby to rotate the two base circle discs, the first base circle disc being freely rotatable relative to the first bevel gear, the second base circle disc being freely rotatable relative to the second bevel gear and means being provided for directly coupling the second base circle disc with the second bevel gear to drive the second bevel gear and also drive the first bevel gear intermeshing with the second bevel gear, and indicating means located between the first base circle disc and the mounting means for the first bevel gear for comparing the rotating motion of the first base circle disc with the rotating motion of the first bevel gear.