WO2010006550A1

WO2010006550A1 - Male and female full rolling gears

Info

Publication number: WO2010006550A1
Application number: PCT/CN2009/072774
Authority: WO
Inventors: 赖登桂
Original assignee: 刘林欛
Priority date: 2008-07-16
Filing date: 2009-07-15
Publication date: 2010-01-21
Also published as: CN201496509U

Abstract

Male and female full rolling gears use a couple rolling curves which can transmit power by engaged rolling as tooth profile. The rolling curves are synthetic curves executing both circular motion and radially linear motion. One of the tooth profile of two mutual mating gears uses convex rolling curve tooth profile (2), and another uses concave rolling curve tooth profile (7). The engaging transmission turns into concave-convex contact transmission, and line of contact engagement lies on the line of centres (6) of two intersecting gear circles. The tooth profile angle is 45°,the pressure angle is equal to 0, the length of tooth is equal to t/2, and the addendum circle is pitch circle. Said male and female full rolling gears do not cause sliding friction and vibration during the transmission.

Description

Manual yin and yang full rolling gear

Technical field

[1] The present invention relates to a mechanical transmission mechanism, and more particularly to a mechanical transmission gear.

Background technique

[2] The more common use of modern gear is the involute gear, with the involute curve as the tooth profile curve, and the two gear tooth profile contact drive meshing line is the inner common tangent of the two gear base circles. During the operation of the two gears, each point of the two gears is in a circular motion. The transmission contact point is no exception, not the tangent point of the two circles, that is, the intersection of the two circles, only on the connecting line of the two fixed circles. The meshing point is the tangent point of the two circles. The involute gear transmission only passes through the connecting line, which is the node on the involute gear pitch circle. The rest of the contact is outside the connecting line of the two gear circles. It is the intersection of the two circles, which will produce sliding friction. , production of shock, vibration and noise, higher temperature rise, lower mechanical efficiency.

[3] Arc gear, the arc gear is a bump-and-concave transmission from the surface, but the tooth profile of the arc gear is an arc, the contact mesh is a line segment, only one point passes through the connecting line, and the remaining contact points, It is the intersection of two circles, which will produce sliding friction. In addition, its contact engagement is the front contact drive, not the side. If the manufacturing accuracy is a little wrong, even the only point of the rolling point can not be touched, that is, sliding friction and impact are generated. If the contact is over-engaged, the vibration will be larger. resistance.

Summary of the invention

[4] The object of the present invention is to overcome the drawbacks of the above-mentioned gears, and to provide a non-sliding friction and no impact.

, full-rolling yin-yang rolling gear with vibration, noise and pressure angle equal to zero.

[5] The object of the present invention is achieved by: using a pair of rolling curves capable of engaging the rolling transmission power as a tooth profile

The rolling curve is a curve formed by both a circular motion and a radial linear motion. The tooth profile of the two-phase meshing gear has a convex rolling curve tooth profile, and a concave concave rolling curve tooth profile; The contact transmission has a contact mesh line on the intersecting center line of the two gear circles, the tooth angle is 45°, the pressure angle is equal to 0, the tooth height is h=t/2, and the addendum circle is a pitch circle.

[6] The two gears mesh the transmission 吋, the tooth top of the large gear and the tooth root of the pinion are connected, the tooth top of the pinion and the tooth root of the large gear are connected, the tooth profile of the general gear is a concave rolling curve, the pinion Convex curve In this way, it conforms to the equal elements of the two circles whose two vector vectors are equal and the same direction, realizes the continuous rolling of yin and yang in the transmission process, and solves the resistance problem caused by the encounter of the two convex curves.

[7] The pitch circle is a pitch circle, which means that the tooth top circumferences of the two gears are equal. Of course, the 1/2 joints are also equal. When the two gears are running, the large gear teeth and the pinion roots are in contact with each other. The circumference of the pinion of the large gear tooth top is equal to the circumference of the next tooth top. Because the transmission contact points of the large and small gears are from the root to the top of the tooth and from the top of the tooth to the root.

[8] In gear transmission: For a pair of gears with meshing transmission, the strength of the teeth of the pinion gear generally needs to be greater than the strength of the large gear teeth to ensure that the service life is basically the same. Therefore, the tooth profile of the pinion gear is designed to be convex. The profile of the rolling curve, the tooth profile of the large gear is designed as a concave rolling curve profile.

[9] Since the present invention draws the above design, the gear is meshed with the gear, the tooth top of the large gear is connected to the tooth root of the pinion, the tooth top of the pinion is connected to the tooth root of the large gear, and the circumference of the two gears The knots are equal, the radial straight line, that is, the tooth height h is equal, and the rolling curve vector of the two circles is analyzed according to engineering mathematics. 'The two vectors have the same mode and direction, and the two vectors are equal. 'And the two tooth profiles curve concave and convex, one-to-one correspondence, and continuous transmission, that is, rolling. In the instant of fast transmission of the two gears, the surface contact transmission is realized, and the mechanical test efficiency of the invention is 97%.

DRAWINGS

[10] FIG. 1 is a schematic structural view of the present invention;

[11] Figure 2 is a schematic diagram of the names and codes of various parts of the present invention;

3 is a schematic structural view of a helical gear according to an embodiment of the present invention;

[13] FIG. 4 is a schematic view showing a transmission structure of a spur gear and a transmission shaft according to Embodiment 2 of the present invention;

Figure 5 is a schematic view showing the transmission structure of the helical bevel gear and the transmission shaft according to the embodiment of the present invention;

Figure 6 is a schematic view showing the structure of a straight bevel gear according to an embodiment of the present invention;

Figure 7 is a schematic view showing the structure of a planetary gear according to a fifth embodiment of the present invention.

detailed description

[17] As shown in Fig. 1, the yin and yang full rolling gear of the present invention is a pair of rolling curves capable of meshing the transmitted power of the gears as a tooth profile, and the rolling curve is a curve synthesized by both circular motion and radial constant velocity motion. . Pinion 0! Having a root circle 1, a tooth top circle 4, the tooth profile is a convex rolling curve tooth profile 2; the large gear 0 ₂ has a root circle 5, a tip circle 3, the tooth profile is a concave rolling curve tooth profile 7; (^ with the large gear 0 ₂ mesh transmission for bumping The contact transmission has a contact meshing line on the intersecting core line 6 of the two gear circles, the tooth angle is 45°, the pressure angle is equal to 0, the tooth height is h=t/2, and the addendum circle is a pitch circle.

[18] For ease of understanding, the names, codes and main parameters of each part of the present invention are described with reference to FIG. 2: [19] The names and codes of the various parts of the present invention:

[20] Teeth circle - all the circles of the crest, the diameter is indicated by de. (This gear is set to a pitch circle)

[21] Root circle - all circles of the tooth root, the diameter is represented by di.

[22] The division circle -- the circle between the addendum circle and the root circle, denoted by d.

[23] Tooth thickness The arc length on the indexing circle on the left and right sides of the tooth is indicated by S.

[24] The arc length between the teeth between the adjacent left and right tooth profiles on the index circle is indicated by W. W>S

[25] Crest height - the radial distance from the gear index circle to the addendum circle is indicated by he.

[26] Root height - The radial distance from the root circle to the index circle is indicated by hi.

[27] Full tooth height The radial distance from the tip circle to the root circle is denoted by h = h + he + hi.

[28] Tooth width - - The gear width in the axial direction is indicated by B.

Main parameters of the invention

[29] (1) Modulus - - The tip diameter of the gear d, the circumference t and the number of teeth z, the following relationship exists: t = Jld / z ie t / Jl = d

/z where t/Jl is taken as a rational parameter as the basic parameter of the gear, called the modulus, expressed in m, in millimeters.

[30] (2) Pressure angle - The original meaning of the pressure angle refers to the angle between the direction of the force and the direction of motion of the object. In a pair of contact gears, the direction of the force of the drive wheel is the tangential direction of the contact point, and the direction of movement of the passive wheel at that point is also the tangential direction. Since both the driving wheel and the driven wheel are circular motions, the direction of the force in contact with the transmission point coincides with the direction of movement of the passive wheel in the contact, so the pressure angle is equal to zero. In the gears that transmit power to the yin and yang rolling gears, the pressure angle is equal to zero. However, in other gears with sliding frictional contact transmissions, they are not equal to zero. In the involute gear, only the nodes on the pitch circle are equal to zero.

[31] (iii) Tooth angle—The tooth angle of the rolling gear means that the tangent to the point on the tooth profile curve and the diameter of the point are 45°. Since the rolling curve is a trajectory synthesized by the circular motion and the radial linear motion, the point on the tooth angle is the direction of the circular motion. The tangential direction of the circle is 90° to the radial line, and the angle of the two vectors is 45°.

[32] (4) The number of teeth is determined by the gear ratio. The number of teeth of the large gear circle is larger than that of the small wheel. Let the diameter of the large circle be 4, the number of teeth be, the diameter of the small wheel circle is d ₂ , and the number of teeth is Z ₂ .

(gear ratio), then ά,ΙΖ^ά^ (modulus).

Dimensional calculation of the invention:

[33] The number of teeth of the large and small gears is determined by the gear ratio of the gear and the diameter of the large and small gears. Set the drive gear 0, , diameter 4, the number of teeth is Ζ _{1 ; the} driven gear 0 ₂ , the diameter is d ₂ , the number of teeth is Z ₂ , the same modulus is M, the same circumference is t, the tooth height is h, and the relationship is as follows From the modulus formula M = t / Jl, t = Jlm, from the nature of the rolling curve, the height h = t / 2 = Jl / 2m. The center distance A is a pair of distances that mesh the two axes of the two gears. After the correct installation, the center line A is the sum of the two-degree circle radius, that is, ^^+^)^.

[34] Embodiment 1, the male and female rolling gears shown in Fig. 3 are helical gears. The yin and yang rolling spur gear can realize the surface contact transmission, which is more suitable for high speed and large load transmission, but in the very low speed transmission 吋, because it is the contact between the force surface and the force surface, and the other side is rotated by the inertial force, generally it is not in contact. of. This is driven by a helical gear, as shown in Figure 3. In the helical gear transmission, the driving gear 1 has a convex rolling curve, and the driven gear 2 has a concave rolling curve.

[35] Embodiment 2 As shown in FIG. 4, the yin and yang rolling gears are driven by a spur gear and a transmission shaft. In the transmission of the transmission shaft 1 and the spur gear 2, the transmission shaft 1 has a convex rolling curve, and the tooth profile of the spur gear 2 has a concave rolling curve.

[36] The outer circle of the spur gear 2 is tangent to the straight circle of the transmission shaft 1; the tail end of the spur of the transmission shaft 1 is tangent to the inner circle of the spur gear 2 of the disk. The rack portion of the drive shaft 1 is formed in a conical shape, and the inner circumference of the spur gear 2 is increased in order to be in close contact with the teeth of the spur gear 2 . Thus, the large circle d _{±1 of the} disk is tangent to the large circle d _{M of the} transmission shaft 1, and the same circumference and modulus and the respective number of teeth 3⁄40 and ₂ are obtained according to the transmission ratio, but the number of the straight rack teeth on the transmission shaft 1 is The number of teeth of the big end and the small end is the same; the number of teeth of the large and small circles of the spur gear is the same, called Z ₂ . Large plate angle spur gear rings of the pitch circle d _± t _{_±} = Jld _± JZ _2; pinion plate angle rings of the circumferential section is t _₂ = Jld / Z _2. Its tooth height h _± = l / 2t _± , h = l / 2t ₂ . Thus, the teeth of the transmission shaft 1 and the teeth of the spur gear 2 are closely meshed and transmitted to realize the rolling transmission.

[37] Embodiment 3, as shown in FIG. 5, the male and female rolling gears are driven by the helical gears and the transmission shaft, and the teeth of the propeller shaft 1 and the helical gear 2 are helically toothed, and the transmission shaft 1 The tooth profile has a convex rolling curve, and the tooth profile of the helical gear 2 is a concave rolling curve.

[38] In order to continuously drive the transmission shaft 1 and the helical gear 2, the gear shaft 1 has a helical tooth. The transmission shaft is a cone, and the oblique line is a spiral. [39] Embodiment 4, as shown in Fig. 6, the yin and yang rolling gear is a bevel gear transmission. The bevel gear transmission is similar to the spur gear transmission. The difference is that the two bevel gear axes of the bevel gear drive intersect at a certain angle. The small bevel gear 1 has a convex rolling curve, and the large bevel gear 2 has a concave rolling curve. The large circle of the large bevel gear 2 is tangent to the small bevel gear 1; the small bevel gear 2 small circle is tangent to the small bevel gear 1 small circle.

[40] Embodiment 5 As shown in Fig. 7, the yin and yang rolling gears are planetary gear transmissions. The planetary gear 1 has a convex rolling curve, and the internal gear 2 has a concave rolling curve; the planetary gear 1 rotates inside the internal gear 2 to form a rolling transmission.

Industrial applicability

[41] The yin and yang rolling gear of the invention is suitable for high-power, high-speed mechanical transmission, and the utility model detects that when the input power of the reducer is 7.5 KW and the mechanical efficiency is 97%, it is suitable for various mechanical transmissions, and is not only suitable for the reducer, but also suitable for For high-speed heavy-duty cars, airplanes, ships, large machine tools, forklifts, and more. The specific implementation method is to roll the gear according to the position of the original model gear. If the reducer can use a 5.5KW reducer for one machine, it can be used for 7.5KW or higher power reducer. At high speeds, airplanes, trains, and trams must increase the speed and increase the inertial force. The design does not need to properly reduce the input power. This saves energy, so that the speed is too fast, the inertia force is greater, and the control is not When you are driving at a high speed, you must limit the speed, that is, do not exceed the maximum speed of the original locomotive. The transmission ratio of the original gear is designed to be large, the diameter of the addendum circle of the pinion is d, and the circumference of the joint 1=1111 d/z (circumference) t/Jl=d/z (modulus). The tooth shape and design of the two gears are made into a hobbing cutter. The yin and yang full rolling gears are produced on the original involute hobbing machine. The other various gears are combined with the new gear design according to their original production procedures to produce yin and yang. Rolling gears.

Claims

Claim

[1] A yin-yang full-rolling gear, characterized in that: a pair of rolling curves capable of engaging the rolling transmission power is a tooth profile, and the rolling curve is a curve synthesized by both a circular motion and a radial linear motion, The tooth profile of the meshing gear has a convex rolling curve profile, and a concave concave curve profile; the meshing transmission is a concave-convex contact transmission, and the contact meshing line is on the intersecting center line of the two gear circles, the teeth thereof The shape angle is 45°, the pressure angle is equal to 0, the tooth height is h=t/2, and the addendum circle is a pitch circle.

[2] The male and female full roller gear according to claim 1, wherein: the gear is a helical gear

The tooth profile of the large gear is a convex rolling curve, and the tooth profile of the pinion is a concave rolling curve.

[3] The male and female full roller gear according to claim 1, wherein: the gear is a transmission shaft and a spur gear, the tooth profile of the transmission shaft is a convex rolling curve, and the tooth profile of the spur gear Use a concave scroll curve.

[4] The male and female full roller gear according to claim 1 or 3, wherein: the transmission shaft and the angular gear are helically toothed, the tooth profile of the transmission shaft is convexly curved, and the helical gear is helical. The tooth profile is a concave rolling curve.

[5] The male and female full roller gear according to claim 1, wherein: the gear is a bevel gear

The tooth profile of the small bevel gear is a convex rolling curve, and the tooth profile of the large bevel gear is a concave rolling curve.

[6] The male and female full roller gear according to claim 1, wherein: the gear is a planetary gear transmission, and the tooth profile of the large circular inner gear is a concave rolling curve, and the tooth profile of the planetary gear is a convex rolling curve.