Machine tool magazine speed reducer with low noise and low abrasion

Abstract

The utility model discloses a machine tool magazine speed reducer with low noise and low abrasion, which relates to the technical field of speed reducers, and comprises a box body and a transmission component, the transmission component comprises a motor, a first gear, a second gear, a third gear, a worm, a fourth gear and a worm gear, an output shaft of the motor extends into the box body, and the output shaft of the motor extends into the box body. The first gear is connected to an output shaft of the motor in a sleeved mode, the second gear is provided with a connecting shaft, the second gear is rotatably connected into the box body through the connecting shaft, the third gear is connected to the connecting shaft in a sleeved mode and meshed with the first gear, and the third gear is connected to the second gear in a sleeved mode. The worm is sleeved with the fourth gear, the fourth gear is meshed with the second gear, the diameter of the second gear, the diameter of the first gear, the diameter of the fourth gear and the diameter of the third gear are sequentially increased, and the threaded part of the worm is meshed with the worm gear; the utility model is more convenient to produce, low in noise and low in abrasion during operation, reduces the generated heat, and reduces the volume.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to a machine tool magazine speed reducer with low noise and low wear. Background Art

[0002] A reducer is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of the motor to the desired number of revolutions and obtain a larger torque.

[0003] There are roughly two types of reducers used for tool magazines on the market. One is to use two pairs of worm gears and worm wheels for speed change. One of the smaller worm gears and worm wheels is connected to a servo motor, which has the characteristic of high speed. However, due to the split setting of the box, when the manufacturing and assembly accuracy do not meet the design requirements, there are defects such as high noise, high wear and high heat generation during operation. Therefore, the manufacturing accuracy requirements for the worm wheel and worm are relatively high; the other is to use two-section speed change gears and roller cams for speed change, which has the advantages of low noise and low wear, but the overall volume is large, and the rear-installed roller camshaft is not convenient for maintenance, and the production cost is high.

[0004] Therefore, the reducer structure needs to be optimized. Utility Model Content

[0005] The utility model discloses a machine tool magazine reducer with low noise and low wear, which solves the technical problems of high noise, high wear and large volume.

[0006] In order to solve the above technical problems, the present invention proposes the following optimization technical solutions:

[0007] A machine tool tool magazine reducer with low noise and low wear, comprising a housing and a transmission assembly, the transmission assembly comprising a motor, a first gear, a second gear, a third gear, a worm, a fourth gear and a worm wheel, the motor being fixed to the outside of the housing, the output shaft of the motor extending into the interior of the housing, the first gear being sleeved on the output shaft of the motor, the second gear being provided with a connecting shaft, the second gear being rotatably connected in the housing via the connecting shaft, the third gear being sleeved on the connecting shaft and meshing with the first gear, the worm being rotatably connected in the housing for the first time, the fourth gear being sleeved on the worm and meshing with the second gear, the diameters of the second gear, the first gear, the fourth gear and the third gear increasing in sequence, the threaded portion of the worm being meshed with the worm wheel, the worm wheel being rotatably connected in the housing for the sixth time.

[0008] Furthermore, the box body includes a base and a shell, the base is detachably connected to the shell, and the shell is provided with an accommodating cavity for accommodating the transmission assembly.

[0009] Further, the shape of the housing is adapted to the shape formed by the assembly of the transmission assembly.

[0010] Further, the box is provided with an opening, and the opening is located at the position corresponding to the worm gear.

[0011] Further, the output shaft of the motor is provided with a first limiting protrusion, and the inner wall of the first gear is provided with a first limiting groove, and the first limiting protrusion is clamped into the first limiting groove.

[0012] Further, the side surface of the connecting shaft is provided with a second limiting protrusion, and the inner wall of the third gear is provided with a second limiting groove, and the second limiting protrusion is clamped into the second limiting groove.

[0013] Further, the worm is provided with a third limiting protrusion, and the inner wall of the fourth gear is provided with a third limiting groove, and the third limiting protrusion is clamped into the third limiting groove.

[0014] Further, the transmission assembly further comprises an oil seal mounting seat, and the oil seal mounting seat is sleeved on the fourth gear and the worm.

[0015] Further, the box is provided with a circular hole, and the circular hole is located at the position corresponding to the worm, and the circular hole is provided with a sealing cover.

[0016] The utility model has the following beneficial effects relative to the prior art:

[0017] The speed reducer provided by the utility model realizes the transmission of the first gear, the second gear, the third gear, the fourth gear, the worm and the worm gear in sequence, the first gear is driven by the motor, and the first gear realizes twice speed change through the second gear, the third gear and the fourth gear and then is transmitted to the worm, so that the worm is driven to reach the required transmission ratio, the production process of the gear is very mature, so that the production is more convenient, noise and abrasion are low during operation, heat generation is reduced, and the volume is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the transmission assembly of the utility model.

[0020] Figure 3 It is an exploded view of the transmission assembly of the utility model.

[0021] In the figure: 1. casing; 2. motor; 3. first gear; 4. second gear; 5. third gear; 6. worm; 7. fourth gear; 8. worm wheel; 9. connecting shaft; 10. threaded portion; 11. base; 12. housing; 13. opening; 14. oil seal mounting seat; 15. sealing cover; 16. bearing; 17. first limiting protrusion; 18. second limiting protrusion; 19. third limiting protrusion. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] See also Figure 1-Figure 3 A machine tool magazine reducer with low noise and low wear, including a box body 1 and a transmission assembly, the transmission assembly includes a motor 2, a first gear 3, a second gear 4, a third gear 5, a worm 6, a fourth gear 7 and a worm wheel 8, the motor 2 is fixed to the outside of the box body 1, the output shaft of the motor 2 extends into the interior of the box body 1, the output shaft of the motor 2 is rotatably connected to the box body 1 by a bearing 16, the first gear 3 is sleeved on the output shaft of the motor 2, the second gear 4 is provided with a connecting shaft 9, the second gear 4 is rotatably connected to the box body 1 through the connecting shaft 9, and a bearing 1 is used between the connecting shaft 9 and the box body 1 6 realizes rotatable connection, the third gear 5 is sleeved on the connecting shaft 9 and meshes with the first gear 3, the second gear 4 and the third gear 5 are coaxially arranged and rotate together under the action of external force, the worm 6 is rotatably connected to the housing 1, and the worm 6 is rotatably connected to the housing 1 through a bearing 16. The fourth gear 7 is sleeved on the worm 6 and meshes with the second gear 4. The diameters of the second gear 4, the first gear 3, the fourth gear 7, and the third gear 5 increase in sequence, the threaded portion 10 of the worm 6 meshes with the worm wheel, and the worm wheel 8 is rotatably connected to the housing 1 through a bearing 16.

[0024] The working principle of the above technical solution is: the motor 2 is started, and the first gear 3 on its output shaft rotates, and the first gear 3 drives the third gear 5 to rotate. Since the third gear 5 is sleeved on the second gear 4, the second gear 4 and the third gear 5 rotate together, and the second gear 4 drives the fourth gear 7 to rotate. Since the fourth gear 7 is sleeved on the worm 6, the worm 6 and the fourth gear 7 rotate together. The worm 6 drives the worm wheel 8 to rotate through the threaded portion 10. Therefore, the meshing transmission between the first gear 3, the second gear 4, the third gear 5, and the fourth gear 7 realizes two speed changes, that is, the output speed of the motor 2 is conveniently transmitted to the worm 6 twice, driving the worm 6 to achieve the transmission ratio required by the design.

[0025] In addition, the worm gear 8 is arranged above the first gear 3 and the second gear 4. Since the worm 6 is relatively long, the worm gear 8 is arranged above the first gear 3 and the second gear 4, which is equivalent to filling the blank space above the first gear 3 and the second gear 4, making the overall structure of the reducer more reasonable and coordinated.

[0026] In this embodiment, the box body 1 includes a base 11 and an outer shell 12, and the base 11 and the outer shell 12 are detachably connected by bolts. The outer shell 12 is provided with an accommodating cavity for accommodating a transmission assembly, and the first gear 3, the second gear 4, the third gear 5, the worm 6, the fourth gear 7 and the worm wheel 8 are all arranged in the accommodating cavity.

[0027] In this embodiment, the shape of the outer shell 12 is adapted to the shape formed by the assembly of the transmission component, and the appearance shape matches the shape of the transmission component. In addition to the aesthetic advantage, it also facilitates the connection of the gear, worm 6, and worm wheel 8 to the inner wall of the outer shell 12 through the bearing 16.

[0028] In this embodiment, an opening 13 is provided on the side of the box body 1, and the position of the opening 13 corresponds to the worm gear 8. The opening 13 is used for external components that need to rotate to pass through the opening 13 to connect to the worm gear 8, and the worm gear 8 can achieve the effect of driving the external components to rotate.

[0029] In this embodiment, the output shaft of the motor 2 is provided with a first limiting protrusion 17, and the inner wall of the first gear 3 is provided with a first limiting groove. The first limiting protrusion 17 is inserted into the first limiting groove. When the motor 2 is started, it is ensured that the motor 2 can drive the first gear 3 to rotate.

[0030] In this embodiment, a second limiting protrusion 18 is provided on the side of the connecting shaft 9, and a second limiting groove is provided on the inner wall of the third gear 5. The second limiting protrusion 18 is inserted into the second limiting groove. When the second gear 4 rotates, it ensures that the connecting shaft 9 of the second gear 4 can drive the third gear 5 to rotate.

[0031] In this embodiment, the worm 6 is provided with a third limiting protrusion 19, and the inner wall of the fourth gear 7 is provided with a third limiting groove. The third limiting protrusion 19 is inserted into the third limiting groove. When the fourth gear 7 rotates, it is ensured that the fourth gear 7 can drive the worm 6 to rotate.

[0032] In this embodiment, the transmission assembly further includes an oil seal mounting seat 14, which is sleeved on the fourth gear 7 and the worm 6. The oil seal mounting seat 14 further fixes the fourth gear 7 on the worm 6 to ensure that the fourth gear 7 and the worm 6 rotate coaxially.

[0033] In this embodiment, the housing 1 is provided with a circular hole, the position of the circular hole corresponds to the worm 6, and the circular hole is provided with a sealing cover 15, which is installed on the housing 1 with bolts and seals the circular hole.

[0034] The foregoing description is intended only to provide specific embodiments of the present invention, intended to enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but rather to be construed in the broadest manner consistent with the principles and novel features claimed herein.

Claims

1. A machine tool magazine reducer with low noise and low wear, characterized in that: The transmission assembly includes a motor, a first gear, a second gear, a third gear, a worm, a fourth gear and a worm wheel. The motor is fixed to the outside of the housing, and the output shaft of the motor extends into the interior of the housing. The first gear is sleeved on the output shaft of the motor. The second gear is provided with a connecting shaft. The second gear is rotatably connected to the housing through the connecting shaft. The third gear is sleeved on the connecting shaft and meshes with the first gear. The worm is rotatably connected to the housing for the first time. The fourth gear is sleeved on the worm and meshes with the second gear. The diameters of the second gear, the first gear, the fourth gear and the third gear increase successively. The threaded portion of the worm meshes with the worm wheel. The worm wheel is rotatably connected to the housing for the sixth time.

2. A machine tool magazine reducer with low noise and low wear according to claim 1, characterized in that: The box body includes a base and a shell. The base is detachably connected to the shell. The shell is provided with an accommodating cavity for accommodating the transmission assembly.

3. A machine tool magazine reducer with low noise and low wear according to claim 2, characterized in that: The shape of the housing is adapted to the shape formed by assembling the transmission assembly.

4. A machine tool magazine reducer with low noise and low wear according to claim 1, characterized in that: An opening is provided on the side of the box body, and the position of the opening corresponds to the worm gear.

5. The machine tool magazine reducer with low noise and low wear according to claim 1, characterized in that: The output shaft of the motor is provided with a first limiting protrusion, the inner wall of the first gear is provided with a first limiting groove, and the first limiting protrusion is clamped into the first limiting groove.

6. The machine tool magazine reducer with low noise and low wear according to claim 1, characterized in that: A second limiting protrusion is provided on the side surface of the connecting shaft, and a second limiting groove is provided on the inner wall of the third gear. The second limiting protrusion is inserted into the second limiting groove.

7. The machine tool magazine reducer with low noise and low wear according to claim 1, characterized in that: The worm is provided with a third limiting protrusion, and the inner wall of the fourth gear is provided with a third limiting groove, and the third limiting protrusion is clamped into the third limiting groove.

8. The machine tool magazine reducer with low noise and low wear according to claim 1, characterized in that: The transmission assembly further includes an oil seal mounting seat, which is sleeved on the fourth gear and the worm.

9. The machine tool magazine reducer with low noise and low wear according to claim 1, characterized in that: The box body is provided with a circular hole, the position of the circular hole corresponds to the worm, and the circular hole is provided with a sealing cover.

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