Novel double-lead worm and gear transmission structure

Abstract

The utility model relates to the technical field of mechanical transmission, and discloses a novel double-lead worm and gear transmission structure which comprises a servo motor, the output end of the servo motor is fixedly connected with a transmission shaft, an oil seal is arranged on the outer ring of the top of the transmission shaft, and a mounting seat is arranged on the outer wall of the transmission shaft. An end cover seat is fixedly connected to the outer ring of the bottom of the servo motor, a mounting seat is arranged at the bottom of the end cover seat, the end cover seat and the mounting seat are fixedly connected through a locking nut, a gasket is arranged at the bottom of the end cover seat, a first bearing is arranged at the bottom of the gasket, and the first bearing is fixedly connected with the transmission shaft. The worm moves upwards by reducing the thickness of the adjusting washer, so that the gap between the worm gear and the worm is reduced, the transmission center distance cannot be changed by axial movement, the tooth surface contact condition cannot be worsened or the abrasion cannot be aggravated, the precision can be kept, the double-lead worm transmission can always keep correct meshing, and the service life of the worm gear and the worm is prolonged. The structure is compact, and adjustment is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission, in particular to a novel double-lead worm gear transmission structure. Background Art

[0002] In the field of mechanical transmission, worm gear transmission is a form of spatial transmission that can transmit motion and power between two staggered axes. Usually, the angle between the two axes is 90°. It is widely used in mechanical design because of its compact transmission structure, large transmission ratio, and self-locking function.

[0003] In the actual application of some machinery, there are higher requirements for transmission errors. Ordinary worm gears have errors in machining accuracy, machining errors in the assembly center distance of the housing, and axial clearance in the angular contact ball bearings used in the worm gears. Therefore, it is difficult to meet the precision requirements of transmission. In addition, due to wear of the worm gear during use, the transmission clearance will become larger and larger, thus affecting the normal use of the equipment.

[0004] In view of the above problems, a new type of double-lead worm gear transmission structure is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a novel double-lead worm gear transmission structure, which solves the problem that the angular contact ball bearings used in the worm gear in the background technology have axial clearance, making it difficult to meet the precision requirements of the transmission, and the worm gear wears during use, and the transmission clearance becomes larger and larger, thereby affecting the normal use of the equipment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel double-lead worm gear transmission structure, comprising a servo motor, the output end of the servo motor is fixedly connected to a transmission shaft, the top outer ring of the transmission shaft is provided with an oil seal, the outer wall of the transmission shaft is provided with a mounting seat, the bottom outer ring of the servo motor is fixedly connected to an end cover seat, the bottom of the end cover seat is provided with a mounting seat, the end cover seat and the mounting seat are fixedly connected by a locking nut, a washer is provided at the bottom of the end cover seat, a first bearing is provided at the bottom of the washer, and the first bearing is fixedly connected to the transmission shaft, and a mounting assembly is provided at the bottom outer ring of the transmission shaft.

[0007] By adopting the above technical solution, the transmission shaft is made more lubricated by the oil seal, and the end cover seat and the mounting seat are fixed by the locking nut, which can be disassembled and the internal oil seal can be replaced.

[0008] As a further description of the above technical solution: the installation assembly includes a spline sleeve, the spline sleeve is arranged at the bottom of the transmission shaft, a double-lead worm is arranged on the inner wall of the bottom of the spline sleeve, a shaft clamp is arranged at the bottom of the spline sleeve, the top outer ring of the double-lead worm is fixedly connected to a second bearing, and the second bearing is fixedly connected to the inner wall of the shaft clamp.

[0009] By adopting the above technical solution, the double-lead worm is fixed by the shaft clamp.

[0010] As a further description of the above technical solution: a cover plate is fixedly connected to the bottom of the mounting seat, a flange is arranged on the top of the cover plate, and an adjusting gasket is arranged on the top of the flange.

[0011] By adopting the above technical solution, the position of the double-lead worm is moved downward by adjusting the washer.

[0012] As a further description of the above technical solution: the left outer wall of the double-lead worm is meshingly connected with a double-lead worm wheel, and a pressure ring is arranged at the bottom of the double-lead worm.

[0013] By adopting the above technical solution, the double-lead worm gear is driven to rotate by the double-lead worm.

[0014] As a further description of the above technical solution: the outer ring at the bottom of the double-lead worm is provided with a bearing seat, and the outer ring of the bearing seat is provided with an O-ring.

[0015] By adopting the above technical solution, the bearing seat and the mounting seat are fixed, and the double-lead worm is installed.

[0016] As a further description of the above technical solution: a third bearing is fixedly connected to the inner wall of the top of the bearing seat, and the third bearing is fixedly connected to the double-lead worm.

[0017] By adopting the above technical solution, the double-lead worm is driven to rotate through the third bearing.

[0018] As a further description of the above technical solution: a fourth bearing is fixedly connected to the inner wall of the bottom of the bearing seat, and the fourth bearing is fixedly connected to the double-lead worm.

[0019] By adopting the above technical solution, the double-lead worm is driven to rotate through four bearings.

[0020] As a further description of the above technical solution: the outer ring of the double-lead worm is provided with an inner spacer sleeve, and the inner wall of the bearing seat is provided with an outer spacer sleeve.

[0021] By adopting the above technical solution, the double-lead worm is protected by the outer spacer sleeve and the inner spacer sleeve.

[0022] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0023] The utility model provides a novel double-lead worm gear transmission structure, which first reduces the thickness of the adjusting washer to move the worm upward, thereby reducing the gap between the worm gear and the worm, and this axial movement will not change the center distance of the transmission group, so it will not cause the tooth surface contact condition to deteriorate or aggravate the wear, which is conducive to maintaining accuracy. The double-lead worm gear transmission can always maintain a correct meshing relationship and has the characteristics of compact structure and easy adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0025] Figure 2 It is a schematic cross-sectional structure diagram of the first bearing of the utility model;

[0026] Figure 3 It is a schematic cross-sectional structure diagram of the second bearing of the utility model;

[0027] Figure 4 It is a schematic cross-sectional structure diagram of the third bearing of the utility model.

[0028] In the figure: 1. servo motor; 2. end cover seat; 3. locking nut; 4. oil seal; 5. transmission shaft; 6. mounting seat; 7. spline sleeve; 8. shaft clamp; 9. second bearing; 10. double-lead worm gear; 11. double-lead worm; 12. bearing seat; 13. third bearing; 14. outer spacer; 15. inner spacer; 16. O-ring; 17. fourth bearing; 18. pressure ring; 19. adjusting washer; 20. flange; 21. cover plate; 22. washer; 23. first bearing. DETAILED DESCRIPTION

[0029] The following will refer to the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.

[0031] Reference Figure 1The utility model discloses a novel double-lead worm gear transmission structure, including a servo motor 1, a transmission shaft 5 is fixedly connected to the output end of the servo motor 1, the transmission shaft 5 is driven to rotate by the servo motor 1, the double-lead worm 11 is driven to rotate by the transmission shaft 5 and the spline sleeve 7, and the double-lead worm wheel 10 is driven to rotate, an oil seal 4 is arranged on the top outer ring of the transmission shaft 5, and lubrication can be increased by the oil seal 4, a mounting seat 6 is arranged on the outer wall of the transmission shaft 5, the transmission shaft 5 and the double-lead worm 11 are mounted and fixed by the mounting seat 6, an end cover seat 2 is fixedly connected to the outer ring of the bottom of the servo motor 1, the mounting seat 6 is sealed by the end cover seat 2 to prevent impurities from entering the interior, a mounting seat 6 is arranged on the bottom of the end cover seat 2, the end cover seat 2 and the mounting seat 6 are fixedly connected by a locking nut 3, and the end cover seat 2 and the mounting seat 6 are fixed by the locking nut 3.

[0032] Reference Figure 2 and Figure 3A gasket 22 is provided at the bottom of the end cover seat 2, a first bearing 23 is provided at the bottom of the gasket 22, and the first bearing 23 is fixedly connected to the transmission shaft 5. A mounting assembly is provided at the outer ring at the bottom of the transmission shaft 5, and the mounting assembly includes a spline sleeve 7, the spline sleeve 7 is provided at the bottom of the transmission shaft 5, a double-lead worm 11 is provided on the inner wall of the bottom of the spline sleeve 7, and a shaft clamp 8 is provided at the bottom of the spline sleeve 7 for fixing the hole-direction movement of the parts. The inner diameter of this type of retaining ring is slightly smaller than the assembly shaft diameter, and the double-lead worm 11 is fixed, and the shaft clamp 8 is fixed to the mounting seat 6, and a second bearing 9 is provided inside the shaft clamp 8. , so that the double-lead worm 11 rotates, the double-lead worm 11 is inserted into the spline sleeve 7, and the transmission shaft 5 is also inserted into the spline sleeve 7, so that the transmission shaft 5 drives the double-lead worm 11 to rotate, the spline sleeve 7 is rotatably connected to the mounting seat 6, the top outer ring of the double-lead worm 11 is fixedly connected with the second bearing 9, and the second bearing 9 is fixedly connected to the inner wall of the shaft clamp 8, the bottom of the mounting seat 6 is fixedly connected with a cover plate 21, the top of the cover plate 21 is provided with a flange 20, the top of the flange 20 is provided with an adjusting washer 19, and the left outer wall of the double-lead worm 11 is meshed with the double-lead worm The wheel 10, the double-lead worm 11 is provided with a pressure ring 18 at the bottom, the double-lead worm 11 is provided with a bearing seat 12 at the bottom outer ring, the bearing seat 12 is provided with an O-ring 16 at the outer ring, the top inner wall of the bearing seat 12 is fixedly connected with a third bearing 13, and the third bearing 13 is fixedly connected to the double-lead worm 11, the bottom inner wall of the bearing seat 12 is fixedly connected with a fourth bearing 17, and the fourth bearing 17 is fixedly connected to the double-lead worm 11, the outer ring of the double-lead worm 11 is provided with an inner spacer 15, the inner wall of the bearing seat 12 is provided with an outer spacer 14, and the outer spacer 14 is aligned with the inner spacer 15 The internal double-lead worm 11 is protected, the cover 21 is opened and the adjusting gasket 19 is placed on the top of the flange 20, the position of the double-lead worm 11 is adjusted, the pressure ring 18 cushions the double-lead worm 11, the internal cover 21 and the flange 20 are fixed with bolts, and the mounting seat 6 is fixed. A bearing seat 12 is sleeved at the bottom of the double-lead worm 11, and the bearing seat 12 is fixed to the mounting seat 6, so that the third bearing 13 and the fourth bearing 17 are provided at the upper and lower ends of the bearing seat 12, so that the double-lead worm 11 can rotate, and the bearing seat 12 is limited by the O-ring 16.

[0033] Working principle: open the cover 21 and place the adjusting washer 19 on the top of the flange 20, adjust the position of the double-lead worm 11, the pressure ring 18 cushions the double-lead worm 11, and the bolts fix the internal cover 21 and the flange 20, and fix it to the mounting seat 6. The bottom of the double-lead worm 11 is sleeved with a bearing seat 12, and the bearing seat 12 is fixed to the mounting seat 6, so that the third bearing 13 and the fourth bearing 17 are provided at the upper and lower ends of the bearing seat 12, so that the double-lead worm 11 can rotate, and the bearing seat 12 is limited by the O-ring 16. The drive shaft 5 is driven to rotate by the servo motor 1, so that the spline sleeve 7 rotates, and the double-lead worm 11 is driven to rotate by the spline sleeve 7. By adjusting the position of the washer 19, the double-lead worm 11 transmission can always maintain a correct meshing relationship, and has the characteristics of compact structure and easy adjustment.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel dual-lead worm gear transmission structure, comprising a servo motor (1), characterized in that: The output end of the servo motor (1) is fixedly connected to a transmission shaft (5), the top outer ring of the transmission shaft (5) is provided with an oil seal (4), the outer wall of the transmission shaft (5) is provided with a mounting seat (6), the bottom outer ring of the servo motor (1) is fixedly connected to an end cover seat (2), the bottom of the end cover seat (2) is provided with a mounting seat (6), the end cover seat (2) and the mounting seat (6) are fixedly connected via a locking nut (3), a washer (22) is provided at the bottom of the end cover seat (2), a first bearing (23) is provided at the bottom of the washer (22), and the first bearing (23) is fixedly connected to the transmission shaft (5), and a mounting assembly is provided at the bottom outer ring of the transmission shaft (5).

2. A novel dual-lead worm gear transmission structure according to claim 1, characterized in that: The mounting assembly comprises a spline sleeve (7), wherein the spline sleeve (7) is arranged at the bottom of the transmission shaft (5), a double-lead worm (11) is arranged on the inner wall of the bottom of the spline sleeve (7), a shaft clamp (8) is arranged at the bottom of the spline sleeve (7), a second bearing (9) is fixedly connected to the top outer ring of the double-lead worm (11), and the second bearing (9) is fixedly connected to the inner wall of the shaft clamp (8).

3. A novel dual-lead worm gear transmission structure according to claim 1, characterized in that: A cover plate (21) is fixedly connected to the bottom of the mounting seat (6), a flange plate (20) is arranged on the top of the cover plate (21), and an adjustment gasket (19) is arranged on the top of the flange plate (20).

4. A novel dual-lead worm gear transmission structure according to claim 2, characterized in that: The left outer wall of the double-lead worm (11) is meshingly connected with a double-lead worm wheel (10), and a pressing ring (18) is arranged at the bottom of the double-lead worm (11).

5. A novel dual-lead worm gear transmission structure according to claim 2, characterized in that: The outer ring at the bottom of the double-lead worm (11) is provided with a bearing seat (12), and the outer ring of the bearing seat (12) is provided with an O-ring (16).

6. A novel dual-lead worm gear transmission structure according to claim 5, characterized in that: A third bearing (13) is fixedly connected to the inner wall of the top of the bearing seat (12), and the third bearing (13) is fixedly connected to the double-lead worm (11).

7. A novel dual-lead worm gear transmission structure according to claim 5, characterized in that: A fourth bearing (17) is fixedly connected to the inner wall of the bottom of the bearing seat (12), and the fourth bearing (17) is fixedly connected to the double-lead worm (11).

8. A novel dual-lead worm gear transmission structure according to claim 5, characterized in that: The outer ring of the double-lead worm (11) is provided with an inner spacer sleeve (15), and the inner wall of the bearing seat (12) is provided with an outer spacer sleeve (14).

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