Coupling Design Method of Star Gear Tooth Angle and Screw Groove Bottom Angle
A design method and technology of star gear teeth, applied in the direction of calculation, instrument, geometric CAD, etc., to achieve the effect of meeting the sealing requirements
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Embodiment 1
[0043] A coupling design method for a star gear tooth angle and a screw groove bottom angle profile, comprising the following steps:
[0044] 1) According to the principle of selecting a value greater than the radius of the ball head of the milling cutter as the radius of the enveloping arc, the transition arc of the alveolar bottom angle is formed.
[0045] The motion relationship between the star wheel and the screw is as follows: figure 2 As shown, establish a comprehensive coordinate system: S1, S2, S3, S4. The fixed coordinate system S1 and S3 represent the initial positions of the star wheel teeth and the screw tooth groove respectively, Z1 coincides with the star wheel axis, Z3 coincides with the screw axis, O 1 o 3 It is the mid-perpendicular line of the two axes; the starting position of the moving coordinate system S2 is the same as that of S1, fixed on the star wheel; the starting position of the moving coordinate system S4 is the same as that of S3, fixed on the...
Embodiment 2
[0063] The method provided in this embodiment is to use a circular arc transition at the joint between the bottom surface and the side surface of the screw tooth groove (called the groove bottom angle), and use a corresponding variable-diameter ellipse circular arc transition for the tooth angle of the star wheel.
[0064] A coupling design method for a star gear tooth angle and a screw groove bottom angle profile, comprising the following steps:
[0065] 1) According to the principle of selecting a value greater than the radius of the ball head of the milling cutter as the radius of the enveloping arc, the transition arc of the alveolar bottom angle is formed.
[0066] The motion relationship between the star wheel and the screw is as follows: figure 2 As shown, establish a comprehensive coordinate system: S1, S2, S3, S4. The fixed coordinate system S1 and S3 represent the initial positions of the star wheel teeth and the screw tooth groove respectively, Z1 coincides with t...
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