High-precision duplicate gear

Abstract

The utility model relates to the technical field of duplicate gears, in particular to a high-precision duplicate gear which comprises a gear shaft, a first gear fixedly installed on the gear shaft and a second gear detachably installed on the gear shaft, and the first gear and the second gear respectively comprise first aligned gear teeth and second aligned gear teeth. A guiding and positioning structure is arranged between the gear shaft and the second gear, the guiding and positioning structure comprises a guiding groove formed in the inner wall of the bottom of the second aligned gear teeth and a guiding block arranged on the outer wall of the gear shaft, the diameter of the guiding block is the same as that of the first aligned gear teeth, and the guiding and positioning structure further comprises a fool-proof positioning assembly. According to the utility model, the guide block is embedded into the guide groove for guide installation, and the fool-proof blocks with different sizes are used for fool-proof positioning and fixing, so that the aligned gear teeth of the first gear and the second gear can be aligned with each other at high precision to realize synchronous transmission.

Description

Technical Field

[0001] The utility model relates to the technical field of double gears, in particular to a high-precision double gear. Background Art

[0002] A duplex gear is a transmission component consisting of two coaxially arranged gears of different sizes and a certain distance between each other. The large and small gears work together to change the rotation speed or speed from the input end to the output end, and are used in transmission systems such as gear boxes. There is currently a detachable duplex gear, which can be disassembled and replaced individually to change the ratio of the number of teeth of the two gears to adjust the rotation speed or torque of the input and output ends.

[0003] When the large and small gears are assembled, there is an angle correspondence between the teeth, and it is required that at least one tooth of the large and small gears be aligned to achieve synchronous transmission. However, it is found that it is difficult to accurately align and install to meet high precision requirements when disassembling and replacing double gears. Utility Model Content

[0004] In order to solve the above problems in the background technology, the utility model provides a high-precision double gear.

[0005] The solution adopted by the utility model to solve its technical problem is: a high-precision double gear, including a gear shaft, a first gear fixedly mounted on the gear shaft and a second gear detachably mounted on the gear shaft, the first gear and the second gear respectively include a first alignment gear tooth and a second alignment gear tooth, a guide positioning structure is provided between the gear shaft and the second gear, the guide positioning structure includes a guide groove provided on the inner wall at the bottom of the second alignment gear tooth and a guide block provided on the outer wall of the gear shaft and having the same diameter as the first alignment gear tooth, and the guide positioning structure also includes an anti-foolproof positioning component.

[0006] By adopting the above technical solution, by setting a guide groove on the inner wall of the bottom of the second alignment gear teeth, and setting a guide block with the same diameter as the first alignment gear teeth on the outer wall of the gear shaft, it is ensured that when the second gear is installed, it can accurately dock with the alignment gear teeth of the first gear along the preset path, thereby achieving high-precision installation of the gears and ensuring synchronous transmission. The second gear can be detachably installed on the gear shaft, which is convenient for replacement and maintenance to adjust the gear ratio.

[0007] Furthermore, the fool-proof positioning assembly includes a plurality of fool-proof blocks arranged on the circumference of the guide block and a plurality of fool-proof grooves arranged on the inner wall of the second gear and adapted to the fool-proof blocks, and the fool-proof blocks are not of the same size as the guide block.

[0008] By adopting the above technical solution, by adding anti-fool blocks of different sizes and anti-fool grooves around the guide block for fixing, it is ensured that the first gear and the second gear are aligned with high precision after the second gear is installed on the gear shaft. The guide block can also be used to stop the second gear to prevent it from loosening after installation.

[0009] Furthermore, the guide block, the anti-fool block and the guide groove, the anti-fool groove are penetrated and locked by fixing screws.

[0010] Furthermore, threaded countersunk holes are provided at the bottom of the guide block and the anti-foolproof block, and nuts for fixing screws can be accommodated in the threaded countersunk holes.

[0011] By adopting the above technical solution, the guide block, the anti-fool block and the guide groove and the anti-fool groove are locked through the fixing screws at the bottom of the gear shaft, ensuring that the second gear can be accurately and firmly connected to the gear shaft during installation to avoid displacement due to vibration; and the screw locking method is adopted, so that the second gear can be easily and quickly disassembled and installed when replacement or maintenance is required. Threaded countersunk holes are provided at the bottom of the guide block and the anti-fool block, and nuts can be placed in the threaded countersunk holes to prevent the nuts from affecting the operation of the gears.

[0012] Furthermore, the guide block and the anti-foolproof block are trapezoidal and are integrally formed with the gear shaft.

[0013] By adopting the above technical solution, the integrally formed trapezoidal guide block and anti-foolproof block make their connection with the gear shaft more firm and reliable, which can improve the stability of gear installation.

[0014] Furthermore, the gear shaft is located between the first gear and the second gear and is also provided with a chip-absorbing magnetic block for absorbing iron chips.

[0015] By adopting the above technical solution, the chip-absorbing magnetic block can absorb the metal chips generated in the double gear transmission process, preventing iron chip particles from entering the gear meshing area to wear the gears and jam the gears, affecting the gear accuracy.

[0016] In summary, the beneficial effects of the utility model are:

[0017] 1. The utility model embeds the guide block and the guide groove which are aligned with the two alignment gear teeth, and cooperates with the anti-fool blocks of different sizes on the circumferential side and the anti-fool groove to ensure the correct installation direction so that the second alignment gear teeth of the second gear can be aligned with the first alignment gear teeth of the first gear with high precision after the second gear is installed and fixed.

[0018] 2. The utility model can effectively absorb metal chips generated during the gear transmission process by means of a chip-absorbing magnetic block disposed between the first gear and the second gear, thereby preventing these particles from affecting the high-precision synchronous transmission of the double gears.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of this embodiment;

[0021] Figure 2 is a cross-sectional view of this embodiment;

[0022] Figure 3 It is a side view of this embodiment.

[0023] In the figure: 1. gear shaft; 2. first gear; 21. first alignment gear tooth; 3. second gear; 31. second alignment gear tooth; 4. guide positioning structure; 41. guide block; 42. guide groove; 43. anti-fool block; 44. anti-fool groove; 5. fixing screw; 6. threaded countersunk hole; 7. chip suction magnetic block. DETAILED DESCRIPTION

[0024] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0025] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like used herein to indicate directions or positional relationships are based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.

[0026] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0027] like Figures 1 to 3As shown, a high-precision double gear includes a gear shaft 1, a first gear 2 fixedly mounted on the gear shaft 1, and a second gear 3 detachably mounted on the gear shaft 1. A plurality of gear tooth groups are equidistantly arranged on the first gear 2 and the second gear 3. The gear tooth groups of the first gear 2 and the second gear 3 of this embodiment include first alignment gear teeth 21 and second alignment gear teeth 31, respectively. A guide positioning structure 4 is provided between the gear shaft 1 and the second gear 3. The guide positioning structure 4 includes a guide groove 42 provided on the inner wall at the bottom of the second alignment gear teeth 31 and a guide block 41 provided on the outer wall of the gear shaft 1 and having the same diameter as the first alignment gear teeth 21. The guide positioning structure 4 also includes an anti-foolproof positioning component.

[0028] The second gear 3 of this embodiment can be detachably mounted on the gear shaft 1, which is convenient for replacement and maintenance to adjust the gear ratio. In addition, by providing a guide groove 42 on the inner wall at the bottom of the second alignment gear tooth 31 and providing a guide block 41 with the same diameter as the first alignment gear tooth 21 on the outer wall of the gear shaft 1, it is ensured that when the second gear 3 is installed, it can be accurately docked with the alignment gear tooth of the first gear 2 along a preset path, which can improve the gear installation accuracy and stability, and ensure synchronization during the transmission process.

[0029] like Figure 1 and Figure 3 As shown, the foolproof positioning assembly of this embodiment includes a plurality of foolproof blocks 43 arranged around the circumference of the guide block 41 and a foolproof groove 44 matched and arranged at the corresponding position of the inner wall of the second gear 3. The foolproof blocks 43 and the guide block 41 are not of the same size. By adding the foolproof blocks 43 of inconsistent sizes and fixing them with the foolproof groove 44 on the circumference of the guide block 41, it is ensured that the aligned gear teeth of the first gear 2 and the second gear 3 are aligned with high precision after the second gear 3 is installed on the gear shaft 1. The foolproof blocks 43 and the foolproof groove 44 can also cooperate with the guide block 41 to stop the second gear 3 to ensure installation stability.

[0030] like Figure 2 As shown, the guide block 41, the anti-idiot block 43 and the guide groove 42 and the anti-idiot groove 44 of this embodiment are penetrated and locked by the fixing screw 5. The screw penetrates the guide block 41, the anti-idiot block 43 from the bottom of the gear shaft 1 and is tightly locked with the corresponding guide groove 42 and the anti-idiot groove 44 to ensure that the second gear 3 can be accurately and firmly connected to the gear shaft 1 during the installation process to avoid displacement due to vibration; and the screw penetration locking method is adopted, so that the second gear 3 can be easily and quickly disassembled and installed when it needs to be replaced or maintained. And a threaded countersunk hole 6 is provided at the bottom of the guide block 41 and the anti-idiot block 43, and the nut of the fixing screw 5 can be accommodated in the threaded countersunk hole 6. The threaded countersunk hole 6 is provided at the bottom of the guide block 41 and the anti-idiot block 43, and the nut can be placed in the threaded countersunk hole 6 to prevent the nut from affecting the operation of the gear.

[0031] like Figure 1As shown, the guide block 41 and the anti-fool block 43 of this embodiment are trapezoidal and are integrally formed with the gear shaft 1. The integrally formed guide block 41 and anti-fool block 43 ensure the durability and stability between the guide block 41 and the anti-fool block 43 and the gear shaft 1, and the embedding of the trapezoidal guide block 41 makes its connection with the gear shaft 1 more firm and reliable, which can improve the stability of the gear installation.

[0032] like Figure 1 As shown, the gear shaft 1 of this embodiment is further provided with a chip suction magnetic block 7 for absorbing iron chips between the first gear 2 and the second gear 3. The chip suction magnetic block 7 can absorb metal chips generated during the double gear transmission process, preventing iron chips from entering the gear meshing area to wear the gears and jam the gears to affect the gear accuracy.

[0033] In summary, the beneficial effects of this embodiment are as follows: this embodiment ensures that the installation direction is correct by embedding the guide block 41 and the guide groove 42 that align the gear teeth in the gear set of the first gear 2 and the second gear 3, and by cooperating with the anti-stupid blocks 43 of different sizes on the circumferential side and the anti-stupid groove 44, so that the second alignment gear teeth 31 of the second gear 3 can be accurately aligned with the first alignment gear teeth 21 of the first gear 2 after installation and fixation. The scrap magnet block 7 disposed between the first gear 2 and the second gear 3 can effectively absorb the metal scraps generated during the gear transmission process, thereby preventing these particles from affecting the high-precision synchronous transmission of the double gears.

[0034] The embodiments described above are only preferred implementation modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and modifications made by technicians in this field on the basis of the utility model shall fall within the protection scope of the present utility model.

Claims

1. A high-precision double gear, comprising a gear shaft, a first gear fixedly mounted on the gear shaft, and a second gear detachably mounted on the gear shaft, characterized in that: The first gear and the second gear respectively include a first alignment gear tooth and a second alignment gear tooth. A guiding and positioning structure is provided between the gear shaft and the second gear. The guiding and positioning structure includes a guiding groove provided on the inner wall at the bottom of the second alignment gear tooth and a guiding block provided on the outer wall of the gear shaft and having the same diameter as the first alignment gear tooth. The guiding and positioning structure also includes an anti-foolproof positioning assembly. The anti-foolproof positioning assembly includes a plurality of anti-foolproof blocks provided on the circumference of the guide block and a plurality of anti-foolproof grooves provided on the inner wall of the second gear and adapted to the anti-foolproof blocks.

2. A high-precision double gear according to claim 1, characterized in that: The foolproof block is inconsistent in size with the guide block.

3. A high-precision double gear according to claim 2, characterized in that: The guide block, the anti-fool block and the guide groove, the anti-fool groove are penetrated and locked by fixing screws.

4. A high-precision double gear according to claim 3, characterized in that: The guide block and the anti-foolproof block are provided with threaded countersunk holes at the bottom, and the nuts of the fixing screws can be accommodated in the threaded countersunk holes.

5. A high-precision double gear according to claim 4, characterized in that: The guide block and the fool-proof block are trapezoidal and are integrally formed with the gear shaft.

6. A high-precision double gear according to claim 5, characterized in that: The gear shaft is located between the first gear and the second gear and is also provided with a scrap magnet for absorbing iron scraps.

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