Let the circumferential matching angle between the measuring coordinate system and the theoretical coordinate system be φ P. Then the coordinate value of the measured point in the theoretical coordinate system is: According to the coordinate value of the measured point in the theoretical coordinate system, the torus helix...
In order to obtain the actual coordinate points of the hourglass worm tooth surface, the coordinate machine or gear measuring center can be used to measure it. Because the gear measuring center has a rotating c-axis, it has more flexibility in the measurement of hourglass worm. The measurement diagram...
The enveloping hourglass worm with variable tooth thickness involute gear is a new type of worm. At present, there is no project inspection standard. Due to the inconsistency of left and right tooth surfaces and the different tooth shape, tooth thickness and lead, the existing accuracy standards and inspection...
Based on the above measurement principle, the milling involute enveloping hourglass worm sample shown in Figure 1 is tested in the klingelberg P26 gear measurement center, as shown in Figure 2. Take the distance angle between measurements θ C is 60 °， The measured data are imported into the...
The accurate three-dimensional model of variable tooth thickness involute gear enveloping hourglass worm is established. In the five axis linkage CAM software hyperMILL, the tooth groove of hourglass worm is roughened with a 4 mm diameter end mill, as shown in Figure 1a, and the tooth surface is roughened...
In variable tooth thickness involute gear enveloping hourglass worm gearing, the worm gear is variable tooth thickness involute gear with different helix angles. Based on the equivalent characteristics of axial movement and circumferential rotation of involute helicoid, the axial movement of variable tooth thickness involute gear can realize the...
What are the characteristics of worm gear mechanism? Answer: (1) transfer the motion and power between the spatial staggered axes, that is, the spatial mechanism. (2) In theory, the tooth profile contact is point contact, but the worm gear is added by the hob of the worm engaged with...
1.In general, what is the allowable center distance difference of spur gear? Generally, the tolerance of the reference value is taken as ± 0 2.Axial angle. The angle between the two shafts of the intersecting shaft gear (umbrella gear) and the intersecting shaft gear (intersecting shaft helical gear and...
1.Modulus Module: the pitch circle of the gear is the basis for designing and calculating the dimensions of each part of the gear, while the circumference of the pitch circle of the gear = π d = Z P. Therefore, the diameter of the scoring circle d = Z...
Due to the low efficiency and precision of gear shaping, which can only cut the soft tooth surface gear, it is not conducive to the application of high-speed and heavy load of the surface gear. With the support of NASA, the military and Boeing, etc., Litvin and others proposed...