Novel synchronous wheel tooth form

Abstract

The utility model relates to the technical field of automatic transmission wheels, in particular to a synchronous wheel tooth profile. Comprising a zigzag outer diameter (1) and a coaxial tooth bottom circle (2) close to the inner side of the outer diameter (1). A fillet (3) close to the zigzag outer diameter (1); the fillet (4) is close to the tooth bottom circle (2); an angle (6) is formed between connecting lines of the outer diameter (1) and the tooth bottom circle (2); and the distance between the highest points of the two adjacent fillets (3) is equal to 7. The utility model aims at providing a novel synchronous wheel tooth profile which is simple in design, high in transmission efficiency and capable of achieving fine transmission, meeting the miniaturization requirement and increasing the integration degree of a system.

Description

Technical Field

[0001] This invention relates to the technical field of automated transmission wheels, and in particular to a synchronous wheel tooth profile. Background Technology

[0002] In the field of mechanical transmission, synchronous belt pulley technology is an important technology widely used in transmission systems. Synchronous belt pulleys work in conjunction with synchronous belts to transmit power, achieving precise speed transmission and high transmission efficiency. However, practical applications have revealed that commercially available synchronous pulleys, due to their pitch limitations, cannot meet miniaturization requirements, making precise transmission difficult; they also cannot meet the integration needs of mechanical systems. Summary of the Invention

[0003] Based on this, the purpose of this invention is to invent a novel synchronous gear tooth profile, which has a simple design, high transmission efficiency, and can achieve precise transmission, meeting the requirements of miniaturization and increasing the integration of the system.

[0004] This invention is achieved through the following technical solution:

[0005] A novel synchronous gear tooth profile includes a sawtooth-shaped outer diameter and a tooth root circle coaxial with the inner side of the outer diameter; a first fillet near the outer diameter of the sawtooth shape; a second fillet near the tooth root circle; an angle formed between the connecting line of the outer diameter and the tooth root circle; and the distance between the highest points of two adjacent first fillets.

[0006] Furthermore, the pitch of the synchronizer pulley is 1 mm.

[0007] Furthermore, the method for calculating the pitch circle diameter of the synchronous pulley is the number of teeth required for the synchronous pulley × pitch; the method for calculating the outer diameter is the pitch circle diameter - the second drop; and the method for calculating the tooth root circle is the outer diameter - the first drop.

[0008] Furthermore, the first rounded corner has a size of R0.2; the second rounded corner has a size of R0.1; the angle is 70°; and the distance is 0.98.

[0009] Furthermore, the first drop dimension is 0.48; the second drop dimension is 0.35.

[0010] Compared to existing technologies, this study compares and analyzes all synchronous pulleys on the market, employing knowledge from multiple disciplines such as mechanics, materials science, and tribology to conduct in-depth analysis and optimization of key parameters such as pitch, tooth profile, and materials. Through the establishment of mathematical models and simulations, the performance of synchronous pulleys under different design schemes is predicted; finally, the current design scheme is determined. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the synchronizing gear tooth profile in a specific embodiment of the present invention;

[0012] Figure 2 This is a schematic diagram of the synchronous pulley structure in a specific embodiment of the present invention; Detailed Implementation

[0013] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or fewer.

[0014] Material preparation: Cut the raw materials into appropriate sizes according to the drawing requirements.

[0015] Lathe machining: rough turning and finish turning are performed on a lathe. For a small number of sample parts, machining can be performed on a conventional lathe.

[0016] Gear hobbing: Based on the design requirements of the synchronous gear, a suitable gear hobbing cutter is customized. The synchronous gear blank to be machined is mounted on the worktable of the gear hobbing machine and secured with clamps to ensure it does not shift during machining. Various parameters of the gear hobbing machine are adjusted, including cutting speed, feed rate, and depth of cut. The gear hobbing machine is started; the hob rotates under the drive of the motor, while the worktable rotates according to the predetermined indexing accuracy, causing the hob to gradually cut the tooth profile of the synchronous gear.

[0017] After processing, the timing pulley is inspected, including tooth pitch, tooth profile deviation, and tooth direction error, to ensure that it meets design standards and usage requirements.

Claims

1. A novel synchronous gear tooth profile, characterized in that, It includes a sawtooth-shaped outer diameter (1) and a tooth root circle (2) coaxial with the inner side of the outer diameter (1); a first fillet (3) near the sawtooth-shaped outer diameter (1); a second fillet (4) near the tooth root circle (2); an angle (6) formed between the connecting line of the outer diameter (1) and the tooth root circle (2); and a distance (7) between the highest points of two adjacent first fillets (3).

2. The novel synchronous gear tooth profile according to claim 1, characterized in that... The pitch of the synchronous pulley is 1 mm.

3. The novel synchronous gear tooth profile according to claim 1, characterized in that... The calculation method for the pitch circle diameter (8) of the synchronous pulley is the number of teeth required for the synchronous pulley × pitch; the calculation method for the outer diameter (1) is the pitch circle diameter (8) - the second drop (9); the calculation method for the tooth root circle (2) is the outer diameter (1) - the first drop (5).

4. The novel synchronous gear tooth profile according to claim 1, characterized in that... The first fillet (3) has a size of R0.2; the second fillet (4) has a size of R0.1; the angle (6) has a size of 70°; and the distance (7) has a size of 0.

98.

5. The novel synchronous gear tooth profile according to claim 3, characterized in that... The first drop (5) has a dimension of 0.48; the second drop (9) has a dimension of 0.35.

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