60 results about "Tooth number" patented technology

The heat exchange tube comprises a tube body, a plurality of tooth structures spirally extending in the length direction of the tube body are arranged on the inner circumferential wall of the tube body, the tooth structures are arranged in the circumferential direction of the tube body at intervals, the ratio of the tooth number of the tooth structures to the tooth height of the tooth structures is 1000-2590.7, and the outer diameter of the tube body is 6.8-7.5 mm. According to the heat exchange tube, the tooth structures spirally extending in the length direction of the tube body are arranged on the inner circumferential wall of the tube body, the multiple tooth structures are arranged in the circumferential direction of the tube body at intervals, and for the heat exchange tube with the outer diameter of the tube body being 6.8 mm-7. 5 mm, the ratio of the tooth number of the tooth structures to the tooth height of the tooth structures is 1000-2590.7; the pressure drop of the heat exchange tube can be reduced, the flow path can be simplified under the condition that the heat exchange performance is not changed, and the complexity of the manufacturing process is reduced.

Wave gear (1) with a ring-shaped, fixed, internally toothed gear (2), a flexible, externally toothed gear (3) arranged inside the internally toothed gear (2), and a wave generator (4) which is inserted into the externally toothed gear (3), wherein the flexible, externally toothed gear (3) has a flexible, cylindrical body region (301) and an annular membrane (302) extending radially from a rear end (301a) of the cylindrical body region (301), and wherein a toothed region formed in a region of the cylindrical body region (301) near an open region at the front end (301b) is deformed into an elliptical shape by the wave generator (4) over a region extending from a rear end region near the diaphragm (302) to a front end region near the opening, such that the deformation is substantially proportional to the distance from the diaphragm (302), wherein the wave gear (1) has a compound tooth profile which is engaged during positive deformation, wherein: the fixed, internally toothed gear (2) is designed as a spur gear with a module (m); the flexible, externally toothed gear (3) is designed as a spur gear with a module (m); a number of teeth of the flexible, externally toothed gear (3) is smaller by the size 2n, where n is a positive integer, than the number of teeth of the fixed, internally toothed gear (2); the deformation of a principal axis of an elliptical boundary neutral line of the flexible, externally toothed gear (3) in a cross-section which is perpendicular to an axis and is hereinafter referred to as the principal cross-sectional area, and which is selected at a predetermined position of the toothing of the flexible, externally toothed gear (3) in a tooth path direction, is set to 2κmn (κ>1); the engagement of the teeth of the fixed, internally toothed gear (2) and the flexible, externally toothed gear (3) in the main cross-sectional area is approximated by rack engagement in order to calculate a motion position curve (M) of the teeth of the flexible, externally toothed gear (3) in relation to the teeth of the fixed, internally toothed gear (2) in connection with a rotation of the shaft generator (4); characterized by the fact that a curve region (AB) is obtained from a region of the motion position curve (M) extending from the main axis of the deepest engagement position of the two gears (2, 3) to a side where the engagement of the teeth is disengaged, such that the curve region (AB) begins at position (A) of the deepest engagement of the two gears (2, 3), which is the position where the inclination angle is 90°, and reaches a position (B) where the inclination angle of the motion position curve (M) relative to a radial line of the fixed, internally toothed gear (2) is α° (0°<α°<30°); and a main area of ​​the tooth profile (30) of the flexible, externally toothed gear (3) is defined by a first similarity transformation curve (AC) in which the curve area (AB) is enlarged by a multiple of λ, and by a straight line (33) smoothly connected to an endpoint of the first similarity transformation curve (AC); a main region of a tooth profile (20) of the fixed, internally toothed gear (2) by a second similarity transformation curve (AD) in which the curve region (AB) is enlarged by a multiple of (λ+1), and is defined by a straight line (24) smoothly connected to an endpoint of the second similarity transformation curve (AD); and a value of λ is less than a maximum value of λ, where the maximum value of λ is obtained when the curve region (AB) is subjected to a similarity transformation with the factor (λ+1), where the origin of the similarity transformation of the curve region (AB) is placed at the position of the deepest intervention (A), such that a remote end of the second similarity transformation curve (AD) is arranged on the motion position curve (M).

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 100 < Cz < 104, in particular Cz = 102 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 63.0 mm < TDFS < 64.0 mm, in particular 63.5 mm, and / or that for the flex spline inner diameter IDFS: 60.8 mm < IDFS < 61.8 mm, in particular IDFS = 61.3 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 3.00, in particular LFS < IDFS / 3.17 or LFS < IDFS / 3.73, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < |R(φ)| < Hmax, where Hmin = 23.124 mm and Hmax = 23.132 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c, where c = 22.627 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: |R(φ)| < d, where d = 22.03 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ-π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < |R(φ)| < Hmax + Sh, where Hmin = 23.124 mm and Hmax = 23.132 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c+(Sh+Sn) / 3, in particular |R(φ)| > c+(Sh+Sn) / 2.6 or |R(cp)| > c+(Sh+Sn) / 2.3, where c = 22.627 mm, and - For all φ = {π / 2 + k·π | k ∈ ℤ}, |R(φ)| < d+Sn, where d = 22.03 mm.

The invention relates to a stator core fault detection method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: establishing a stator core fault simulation model, and generating a stator core fault simulation data table based on the model; based on the simulation data table, determining the single-side tooth number of the local excitation iron core; a fault tooth part is determined, and first local excitation iron cores meeting the single-side tooth number are arranged on target tooth parts on the two sides of the fault tooth part; inquiring whether the tooth number of the single side of the magnet core has bypass magnetic flux or not based on the simulation data table, if yes, obtaining a second local excitation iron core which is the same as the first local excitation iron core in material and size and opposite in winding direction, and placing the second local excitation iron core on the remaining tooth part except the target tooth part to eliminate the bypass magnetic flux; the first local excitation iron core and the second local excitation iron core are adopted to measure the temperature rise of the fault tooth part, and the fault condition of the stator iron core is judged according to the temperature rise. By adopting the method, stator core fault detection can be realized.

Stress wave gear in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 100 < Cz < 104, in particular Cz = 102 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 34.4 mm < TDFS < 35.4 mm, in particular 34.9 mm, and / or that for the flex spline inner diameter IDFS: 33.4 mm < IDFS < 34.4 mm, in particular IDFS = 33.9 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.05, in particular LFS < IDFS / 2.16 or LFS < IDFS / 3.35, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < | R(φ) | < Hmax, where Hmin = 12.830 mm and Hmax = 12.838 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, the following holds: | R(φ) | > c, where c = 12.549 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d, where d = 12.22 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ=π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(φ) | < Hmax + Sh, where Hmin = 12.830 mm and Hmax = 12.838 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k E ℤ}, | R(φ) | > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(φ) | > c+(Sh+Sn) / 2.3, where c = 12.549 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d+Sn, where d = 12.22 mm.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 240 < Cz < 244, in particular Cz = 242 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 42.6 mm < TDFS < 43.6 mm, in particular 43.1 mm, and / or that for the flex spline inner diameter IDFS: 41.2 mm < IDFS < 42.2 mm, in particular IDFS = 41.7 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.47, in particular LFS < IDFS / 2.61 or LFS < IDFS / 3.54, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < |R(φ)| < Hmax, where Hmin = 15.365 mm and Hmax = 15.373 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c, where c = 15.160 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, |R(φ)| < d, where d = 14.93 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ-π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < |R(φ)| < Hmax + Sh, where Hmin = 15.365 mm and Hmax = 15.373 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c+(Sh+Sn) / 3, in particular |R(φ)| > c+(Sh+Sn) / 2.6 or |R(φ)| > c+(Sh+Sn) / 2.3, where c = 15.160 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, |R(φ)| < d+Sn, where d = 14.93 mm.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 200 < Cz < 204, in particular Cz = 202 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 42.6 mm < TDFS < 43.6 mm, in particular 43.1 mm, and / or that for the flex spline inner diameter IDFS: 41.2 mm < IDFS < 42.2 mm, in particular IDFS = 41.7 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.47, in particular LFS < IDFS / 2.61 or LFS < IDFS / 3.54, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < | R(φ) | < Hmax, where Hmin = 15.398 mm and Hmax = 15.406 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, the following holds: | R(φ) | > c, where c = 15.159 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d, where d = 14.90 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ=π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(φ) | < Hmax + Sh, where Hmin = 15.398 mm and Hmax = 15.406 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, | R(φ) | > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(φ) | > c+(Sh+Sn) / 2.3, where c = 15.159 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d+Sn, where d = 14.90 mm.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 200 < Cz < 204, in particular Cz = 202 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. The following applies to the pitch circle diameter TDFS: 82.0 mm <TDFS < 83,0 mm, insbesondere 82,5, und / oder dass für den Flexsplineinnendurchmesser IDFS gilt: 79,3 mm < IDFS < 80,3 mm, insbesondere IDFS = 79,8 mm, und dass e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.99, in particular LFS < IDFS / 3.16 or LFS < IDFS / 3.72, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < |R(φ)| < Hmax, where Hmin = 29.937 mm and Hmax = 29.945 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c, where c = 29.483 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: |R(φ)| < d, where d = 28.98 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ=π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < |R(φ)| < Hmax + Sh, where Hmin = 29.937 mm and Hmax = 29.945 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c+(Sh+Sn) / 3, in particular |R(φ)| > c+(Sh+Sn) / 2.6 or |R(φ)| > c+(Sh+Sn) / 2.3, where c = 29.483 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, |R(φ)| < d+Sn, where d = 28.98 mm.

The invention discloses an oral cavity image data processing method and device, electronic equipment and a readable storage medium, and relates to the technical field of computers, in particular to the technical fields of dental orthodontics, computer aided design and the like. According to the specific implementation scheme, based on two-dimensional images in at least two specified directions in an oral cavity, a tooth segmentation result of the two-dimensional image in each specified direction in the at least two specified directions and a tooth number corresponding to the tooth segmentation result are obtained; acquiring a three-dimensional tooth image with tooth number characteristics in the oral cavity; and correcting tooth numbers corresponding to the tooth segmentation results of the two-dimensional images in each specified direction by using the three-dimensional tooth images with tooth number characteristics in the oral cavity.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 100 < Cz < 104, in particular Cz = 102 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 50.3 mm < TDFS < 51.3 mm, in particular 50.8 mm, and / or that for the flex spline inner diameter IDFS: 48.6 mm < IDFS < 49.6 mm, in particular IDFS = 49.1 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.81, in particular LFS < IDFS / 2.97 or LFS < IDFS / 3.74, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < | R(φ) | < Hmax, where Hmin = 18.205 mm and Hmax = 18.213 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, the following holds: | R(φ) | > c, where c = 17.802 mm, and - For all φ ∈ {π / 2 + k·π | k E ℤ}, the following holds: | R(φ) | < d, where d = 17.32 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ=π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(φ) | < Hmax + Sh, where Hmin = 18.205 mm and Hmax = 18.213 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, | R(φ) | > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(φ) | > c+(Sh+Sn) / 2.3, where c = 17.802 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d+Sn, where d = 17.32 mm.

This invention provides a speed reduction mechanism and a motor with a speed reduction mechanism. The first gear and the second gear can be configured with an arc-shaped, uneven meshing structure that does not deteriorate the meshing state between them. Furthermore, the number of teeth on the first gear can be set to one, and the number of teeth on the second gear can be increased to easily increase the tooth difference. A helical meshing protrusion (31c) is provided on the pinion (31), and multiple meshing recesses (32d) for the meshing protrusion to mesh on the helical gear (32). These meshing protrusions and recesses are formed in an arc shape in a direction orthogonal to the axial direction of the pinion. Therefore, the pinion and helical gear can be configured with an arc-shaped, uneven meshing structure that does not deteriorate the meshing state between them, and the number of teeth on the pinion can be set to one, and the number of teeth on the helical gear can be increased to easily increase the tooth difference. Therefore, the reduction ratio can be further increased without increasing the volume of the speed reduction mechanism (30).

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 100 < Cz < 104, in particular Cz = 102 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 42.6 mm < TDFS < 43.6 mm, in particular 43.1 mm, and / or that for the flex spline inner diameter IDFS: 41.2 mm < IDFS < 42.2 mm, in particular IDFS = 41.7 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.47, in particular LFS < IDFS / 2.61 or LFS < IDFS / 3.54, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < | R(φ) | < Hmax, where Hmin = 15.503 mm and Hmax = 15.511 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, the following holds: | R(φ) | > c, where c = 15.164 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d, where d = 14.76 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ=π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(φ) | < Hmax + Sh, where Hmin = 15.503 mm and Hmax = 15.511 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, | R(φ) | > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(φ) | > c+(Sh+Sn) / 2.3, where c = 15.164 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d+Sn, where d = 14.76 mm.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 200 < Cz < 204, in particular Cz = 202 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 42.6 mm < TDFS < 43.6 mm, in particular 43.1 mm, and / or that for the flex spline inner diameter IDFS: 41.2 mm < IDFS < 42.2 mm, in particular IDFS = 41.7 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.47, in particular LFS < IDFS / 2.61 or LFS < IDFS / 3.54, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < | R(φ) | < Hmax, where Hmin = 15.398 mm and Hmax = 15.406 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, the following holds: | R(φ) | > c, where c = 15.159 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d, where d = 14.90 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ=π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(φ) | < Hmax + Sh, where Hmin = 15.398 mm and Hmax = 15.406 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, | R(φ) | > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(φ) | > c+(Sh+Sn) / 2.3, where c = 15.159 mm, and - For all φ = {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d+Sn, where d = 14.90 mm.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 320 < Cz < 324, in particular Cz = 322 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 63.0 mm < TDFS < 64.0 mm, in particular 63.5 mm, and / or that for the flex spline inner diameter IDFS: 60.8 mm < IDFS < 61.8 mm, in particular IDFS = 61.3 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 3.00, in particular LFS < IDFS / 3.17 or LFS < IDFS / 3.73, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < | R(φ) | < Hmax, where Hmin = 22.858 mm and Hmax = 22.866 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, the following holds: | R(φ) | > c, where c = 22.625 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d, where d = 22.36 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ=π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(φ) | < Hmax + Sh, where Hmin = 22.858 mm and Hmax = 22.866 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, | R(φ) | > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(φ) | > c+(Sh+Sn) / 2.3, where c = 22.625 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d+Sn, where d = 22.36 mm.

Engine (50; 54; 55; 56), comprising: a field (2); and a runner (1) which is facing the field (2) and is arranged to be movable relative to the field (2), wherein the rotor (1) comprises a core back (11), several teeth (12) and several coils (13), wherein the several teeth (12) each extend from the core back (11) to the field (2) and are arranged in a direction of travel of the rotor (1) with respect to the field (2), wherein the several coils (13) are attached to the several teeth (12), wherein the multiple teeth (12) comprise at least one first tooth and at least one second tooth, wherein each of the at least one first tooth is a tooth to which only one coil of a single phase of the coils (13) is attached, wherein each of the at least one second tooth is a tooth to which coils of multiple phases of the coils (13) are attached, wherein the multiple coils (13) are each arranged such that they do not extend beyond a slot formed by adjacent teeth, wherein C sections (10) are arranged in the direction of travel, wherein the section (10) comprises N / C teeth (12), where N is the number of teeth (12) of the runner (1), wherein C is a greatest common divisor of N and the number of magnetic poles of the field (2), the magnetic poles being located in a region facing the N teeth (12), and where the number of second teeth per section of the C sections (10) is one.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 240 < Cz < 244, in particular Cz = 242 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 42.6 mm < TDFS < 43.6 mm, in particular 43.1 mm, and / or that for the flex spline inner diameter IDFS: 41.2 mm < IDFS < 42.2 mm, in particular IDFS = 41.7 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.47, in particular LFS < IDFS / 2.61 or LFS < IDFS / 3.54, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < | R(φ) | < Hmax, where Hmin = 15.365 mm and Hmax = 15.373 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, the following holds: | R(φ) | > c, where c = 15.160 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d, where d = 14.93 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ=π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(φ) | < Hmax + Sh, where Hmin = 15.365 mm and Hmax = 15.373 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, | R(φ) | > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(φ) | > c+(Sh+Sn) / 2.3, where c = 15.160 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d+Sn, where d = 14.93 mm.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 200 < Cz < 204, in particular Cz = 202 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 50.3 mm < TDFS < 51.3 mm, in particular 50.8 mm, and / or that for the flex spline inner diameter IDFS: 48.6 mm < IDFS < 49.6 mm, in particular IDFS = 49.1 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.81, in particular LFS < IDFS / 2.97 or LFS < IDFS / 3.74, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < |R(φ)| < Hmax, where Hmin = 18.083 mm and Hmax = 18.091 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c, where c = 17.799 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: |R(φ)| < d, where d = 17.49 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ=π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < |R(φ)| < Hmax + Sh, where Hmin = 18.083 mm and Hmax = 18.091 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c+(Sh+Sn) / 3, in particular |R(φ)| > c+(Sh+Sn) / 2.6 or |R(φ)| > c+(Sh+Sn) / 2.3, where c = 17.799 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, |R(φ)| < d+Sn, where d = 17.49 mm.

The invention relates to a manually actuated sampling pipette (1) comprising a volumeter (22) comprising:-at least one drive gear (26) rotated by an adjustment screw (14); a first driven gear (30a) having a number of teeth Z1; a second driven gear (30b) having a number of teeth Z2, the number of teeth Z2 being different from the number of teeth Z1; -a first angle sensor (38a) configured to determine a first angle A1 of the first driven gear (30a); -a second angle sensor (38b) configured to determine a second angle A2 of the second driven gear (30b); a system (42) for determining the angular position of the adjustment screw (14) from the pairs of values (angle A1; angle A2).

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 100 < Cz < 104, in particular Cz = 102 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 63.0 mm < TDFS < 64.0 mm, in particular 63.5 mm, and / or that for the flex spline inner diameter IDFS: 60.8 mm < IDFS < 61.8 mm, in particular IDFS = 61.3 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 3.00, in particular LFS < IDFS / 3.17 or LFS < IDFS / 3.73, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < | R(φ) | < Hmax, where Hmin = 23.124 mm and Hmax = 23.132 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k E ℤ}, the following holds: | R(φ) | > c, where c = 22.627 mm, and - For all φ ∈ {π / 2 + k·π | k E ℤ}, the following holds: | R(φ) | < d, where d = 22.03 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ=π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(φ) | < Hmax + Sh, where Hmin = 23.124 mm and Hmax = 23.132 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k E ℤ}, | R(φ) | > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(φ) | > c+(Sh+Sn) / 2.3, where c = 22.627 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d+Sn, where d = 22.03 mm.

Embodiments of the present application provide a method and device for determining tooth numbers, obtaining first crown data and second crown data of the same patient in the same treatment stage; determining the tooth number of the second tooth as the tooth number of the first tooth based on the overlapping degree of the crown of the first tooth in the first crown data and the crown of the second tooth in the second crown data, the overlapping degree of the first tooth satisfying a first set threshold; determining the tooth number of any third tooth in the second crown data according to the positional relationship between the crown of the second tooth with the tooth number and the crown of the third tooth; the third tooth is any tooth in the second crown data except the second tooth with the tooth number. By pairing the tooth numbers according to the first crown data and the second crown data, the tooth number of the corresponding permanent tooth in the second crown data and the tooth number of the embedded tooth in the second crown data are determined, thereby improving the efficiency and accuracy of determining the tooth number.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 160 < Cz < 164, in particular Cz = 162 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 50.3 mm < TDFS < 51.3 mm, in particular 50.8 mm, and / or that for the flex spline inner diameter IDFS: 48.6 mm < IDFS < 49.6 mm, in particular IDFS = 49.1 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.81, in particular LFS < IDFS / 2.97 or LFS < IDFS / 3.74, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < | R(φ) | < Hmax, where Hmin = 18.143 mm and Hmax = 18.151 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, the following holds: | R(cp) | > c, where c = 17.796 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d, where d = 17.42 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ-π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(φ) | < Hmax + Sh, where Hmin = 18.143 mm and Hmax = 18.151 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, | R(φ) | > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(φ) | > c+(Sh+Sn) / 2.3, where c = 17.796 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(φ) | < d+Sn, where d = 17.42 mm.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 320 < Cz < 324, in particular Cz = 322 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 50.3 mm < TDFS < 51.3 mm, in particular 50.8 mm, and / or that for the flex spline inner diameter IDFS: 48.6 mm < IDFS < 49.6 mm, in particular IDFS = 49.1 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.81, in particular LFS < IDFS / 2.97 or LFS < IDFS / 3.74, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < |R(φ)| < Hmax, where Hmin = 17.992 mm and Hmax = 18.000 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c, where c = 17.801 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, |R(φ)| < d, where d = 17.58 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ-π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < |R(φ)| < Hmax + Sh, where Hmin = 17.992 mm and Hmax = 18.000 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c+(Sh+Sn) / 3, in particular |R(φ)| > c+(Sh+Sn) / 2.6 or |R(φ)| > c+(Sh+Sn) / 2.3, where c = 17.801 mm, and - For all φ = {rr / 2 + k·π | k ∈ ℤ}, |R(φ)| < d+Sn, where d = 17.58 mm.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 100 < Cz < 104, in particular Cz = 102 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 82.0 mm < TDFS < 83.0 mm, in particular 82.5 mm, and / or that for the flex spline inner diameter IDFS: 79.3 mm < IDFS < 80.3 mm, in particular IDFS = 79.8 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.99, in particular LFS < IDFS / 3.16 or LFS < IDFS / 3.72, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < |R(φ)| < Hmax, where Hmin = 30.134 mm and Hmax = 30.142 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c, where c = 29.488 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: |R(φ)| < d, where d = 28.71 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ-π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(cp) | < Hmax + Sh, where Hmin = 30.134 mm and Hmax = 30.142 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(cp) | > c+(Sh+Sn) / 2.3, where c = 29.488 mm, and - For all φ = {rr / 2 + k·π | k ∈ ℤ}, |R(φ)| < d+Sn, where d = 28.71 mm.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 320 < Cz < 324, in particular Cz = 322 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 63.0 mm < TDFS < 64.0 mm, in particular 63.5 mm, and / or that for the flex spline inner diameter IDFS: 60.8 mm < IDFS < 61.8 mm, in particular IDFS = 61.3 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 3.00, in particular LFS < IDFS / 3.17 or LFS < IDFS / 3.73, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < | R(φ) | < Hmax, where Hmin = 22.858 mm and Hmax = 22.866 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, the following holds: | R(cp) | > c, where c = 22.625 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(cp) | < d, where d = 22.36 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ=π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(cp) | < Hmax + Sh, where Hmin = 22.858 mm and Hmax = 22.866 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, | R(cp) | > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(cp) | > c+(Sh+Sn) / 2.3, where c = 22.625 mm, and - For all φ = {π / 2 + k·π | k ∈ ℤ}, the following holds: | R(cp) | < d+Sn, where d = 22.36 mm.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 100 < Cz < 104, in particular Cz = 102 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 50.3 mm < TDFS < 51.3 mm, in particular 50.8 mm, and / or that for the flex spline inner diameter IDFS: 48.6 mm < IDFS < 49.6 mm, in particular IDFS = 49.1 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 2.81, in particular LFS < IDFS / 2.97 or LFS < IDFS / 3.74, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < |R(φ)| < Hmax, where Hmin = 18.205 mm and Hmax = 18.213 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c, where c = 17.802 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ 2}, |R(φ)| < d, where d = 17.32 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ-π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < |R(φ)| < Hmax + Sh, where Hmin = 18.205 mm and Hmax = 18.213 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c+(Sh+Sn) / 3, in particular |R(φ)| > c+(Sh+Sn) / 2.6 or |R(φ)| > c+(Sh+Sn) / 2.3, where c = 17.802 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, |R(φ)| < d+Sn, where d = 17.32 mm.

Voltage wave gears in pot or hat design with a. a circular spline (1) whose circular spline toothing (2) has a number of teeth Cz of 200 < Cz < 204, in particular Cz = 202 teeth, b. a flexspline (3) whose flexspline toothing (4) has a number of teeth Fz of Fz = Cz-2 and a pitch circle diameter TDFS and engages in the circular spline toothing (2) at two opposite points and whose wall (5) in its basic form is circular in cross-section and has a flexspline inner diameter IDFS, and with c. a shaft generator (6) having a radially flexible rolling bearing (7) by means of which an oval shaft generator insert (8) is rotatably mounted, characterized in that d. for the pitch circle diameter TDFS: 63.0 mm < TDFS < 64.0 mm, in particular 63.5 mm, and / or that for the flex spline inner diameter IDFS: 60.8 mm < IDFS < 61.8 mm, in particular IDFS = 61.3 mm, and that e. for the axial length LFS of the wall (5) of the flexspline (3) the following applies: LFS < IDFS / 3.00, in particular LFS < IDFS / 3.17 or LFS < IDFS / 3.73, and that i. the oval shape of the wave generator insert (8) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin < |R(φ)| < Hmax, where Hmin = 22.972 mm and Hmax = 22.980 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c, where c = 22.622 mm, and - For all φ ∈ {π / 2 + k·π | k ∈ ℤ}, the following holds: |R(φ)| < d, where d = 22.24 mm, and / or ii. that the radially flexible rolling bearing (7) has a cross-sectional height Sh in the direction φ=0 and a cross-sectional height Sn in the direction φ-π / 2 and that the oval shape of the radially flexible rolling bearing (7) in polar coordinates (φ, R(φ)) satisfies the following conditions: - For all φ ∈ {kπ | k ∈ ℤ}, Hmin + Sh < | R(cp) | < Hmax + Sh, where Hmin = 22.972 mm and Hmax = 22.980 mm, and - For all φ ∈ {π / 4 + kπ / 2 | k ∈ ℤ}, |R(φ)| > c+(Sh+Sn) / 3, in particular | R(φ) | > c+(Sh+Sn) / 2.6 or | R(cp) | > c+(Sh+Sn) / 2.3, where c = 22.622 mm, and - For all φ = {π / 2 + k·π | k ∈ ℤ}, |R(φ)| < d+Sn, where d = 22.24 mm.

To provide a moderation device capable of switching moderation feeling by simple processing, and a rotation operation device.SOLUTION: The detent device 20 includes a coil 8 through which a current intermittently flows, a plurality of first teeth 21 provided on the stator 3, and a plurality of second teeth 22 provided on the rotor 4. The second tooth part 22 has the number of teeth different from that of the first tooth part 21, and can be opposed to the first tooth part 21. When a current flows through the coil 8, the coil 8 generates a magnetic flux that attracts the opposing teeth to each other, thereby generating a click in the rotation operation of the rotor 4. The plurality of first teeth 21 and the plurality of second teeth 22 are formed so as to have a plurality of combination patterns of tooth shapes when facing each other in the process of rotation of the rotor 4. When the rotor 4 is rotated, a current is supplied to the coil 8 every time the teeth of the selected combination pattern face each other based on a detection signal of a detection unit that detects the rotation of the rotor 4.SELECTED DRAWING: Figure 1

The application relates to the technical field of machine tool machining control, in particular to a continuous automatic secondary tool setting method, device, equipment and medium based on a numerical control gear machine tool, which comprises the following steps: after the coupling of a tool shaft and a workpiece shaft, the tool shaft and the workpiece shaft are continuously rotated in one direction; the full-tooth coordinates of the workpiece are collected by using a continuous measurement function, and the installed tooth number is verified by calculating the coordinate jump data; if the tooth numbers match, the actual angle of each tooth of the full tooth is calculated, the quenching deformation amount is estimated, and the initial phase deviation is determined; the first piece is cut by using a hand wheel guide function, and the accurate compensation angle is determined; finally, the compensation angle is superimposed into the workpiece shaft coordinates in the coupled state by using a phase tracking function, and the automatic tool setting with high precision is completed. By continuously measuring the full tooth in one direction after the coupling, the application solves the reverse gap precision problem, the quenching deformation uneven problem and the efficiency problem of repeated start and stop of the main shaft in the prior art, and realizes the secondary tool setting with higher precision, lower rejection rate and higher automation level.

Embodiments of the present invention provide a method and apparatus for determining the tooth number of a tooth. The method comprises: acquiring first dental crown data and second dental crown data of a same patient in at least one treatment stage; on the basis of the degree of overlap between the dental crown of a first tooth in the first dental crown data and the dental crown of a second tooth in the second dental crown data, determining the tooth number of the first tooth having a degree of overlap satisfies a first set threshold as the tooth number of the second tooth; and on the basis of a positional relationship between the dental crown of the second tooth having the tooth number and the dental crown of a third tooth, determining the tooth number of the third tooth, wherein the third tooth is any tooth other than the second tooth having the tooth number in the second dental crown data. By matching the tooth numbers on the basis of the first dental crown data and the second dental crown data, the tooth number of a corresponding permanent tooth in the second dental crown data and the tooth number of an impacted tooth in the second dental crown data are determined, thereby improving the efficiency and accuracy of determining the tooth number of a tooth.

The reduction gear 1 of the embodiment is provided with a housing having internal tooth pins and a vibrating gear having external teeth 15d which engage in the internal tooth pins, and in which the number of teeth of the external teeth 15d is less than the number of teeth of the internal tooth pins.If the position at which an uneven shape of the tooth flank 20 reverses on the outer teeth 15d is defined as the inflection point Ip, if the point at which the surface pressure on the side closer to the tooth tip 22t than the inflection point Ip is maximal due to the engagement with the inner teeth, where the tooth flank 20 is considered as the theoretical tooth shape La, is defined as the point of maximum surface pressure SPmax, and if the curve along the theoretical tooth shape La is defined as the same height, the highest position of the tooth flank 20 on the side closer to the tooth root 22b than the inflection point Ip is higher than the height of the tooth flank 20 at the point of maximum surface pressure SPmax.