Adjustable speed reducer special for high-precision tool magazine

Abstract

The utility model discloses an adjustable high-precision tool magazine special speed reducer, which comprises a box body and a worm and gear structure arranged in the box body, the worm and gear structure respectively forms an input end and an output end on the two sides of the box body, the worm and gear structure comprises a double-lead worm and a worm gear, and the worm gear is arranged in the box body. An axial adjusting structure used for adjusting the axial position of the double-lead worm is arranged on one side of the box body. According to the speed reducer structure, torque transmission is achieved through the double-lead worm and gear structure, the axial position of the double-lead worm can be adjusted after the double-lead worm is used for a long time and abraded in cooperation with the axial adjusting structure, the position, with the proper tooth thickness, on the double-lead worm is fully meshed with the worm gear, the service life is greatly prolonged, and use precision is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of speed reducers and relates to an adjustable high-precision speed reducer for tool magazines. Background Technology

[0002] Speed ​​reducers are widely used in mechanisms for transmitting power and motion. Among them, worm gear reducers are a common type. They are mechanisms that use gear speed converters to reduce the rotational speed of a motor to the desired rotational speed and obtain a larger torque.

[0003] In some applications involving significant centrifugal force, such as the tool selection process in a machining equipment, the large centrifugal force can cause significant wear on traditional worm gears. Long-term use can lead to a rapid decrease in the precision of the reducer itself, affecting the overall performance of the equipment. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides an adjustable high-precision tool magazine reducer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable high-precision tool magazine reducer includes a housing and a worm gear structure disposed within the housing. The worm gear structure forms an input end and an output end on both sides of the housing, respectively. The worm gear structure includes a double-lead worm and a worm wheel. An axial adjustment structure for adjusting the axial position of the double-lead worm is provided on one side of the housing.

[0007] Furthermore, the axial adjustment structure includes an adjustment sleeve, which is coaxially and rotatably disposed on the outer periphery of the double-lead worm gear, and a connection port for threaded connection with the adjustment sleeve is provided on one side of the housing.

[0008] Furthermore, a slot is provided on one side of the connector, and a screw hole is provided through the slot.

[0009] Furthermore, the input end includes an input shaft and an output shaft passing through the housing, the input shaft and the output shaft are connected, and the output shaft is connected to the shaft end of the double-lead worm gear.

[0010] Furthermore, the input shaft is arranged perpendicularly to the output shaft, and the input shaft and the output shaft are connected by a bevel gear transmission.

[0011] Furthermore, the shaft end of the dual-lead worm gear is coaxially inserted into the output shaft, and an expansion sleeve for gripping the output shaft and the dual-lead worm gear is sleeved on the outer periphery of the output shaft.

[0012] Furthermore, deep groove ball bearings are respectively fitted around the outer periphery of the double-lead worm gear and the outer periphery of the output shaft.

[0013] Furthermore, the output end includes an output flange, which is connected to the worm gear.

[0014] In summary, the advantages of this utility model are as follows:

[0015] The reducer structure of this utility model adopts a double-lead worm gear structure to realize torque transmission. With the help of the axial adjustment structure, the axial position of the double-lead worm can be adjusted after long-term use and wear, so that the appropriate tooth thickness of the double-lead worm can fully mesh with the worm wheel, which greatly extends the service life and ensures the accuracy of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the speed reducer of this utility model.

[0017] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure in one of the directions.

[0018] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure from another direction.

[0019] The markings in the diagram are: 1. Housing; 11. Output flange; 21. Input shaft; 22. Output shaft; 31. Double-lead worm gear; 311. Expansion sleeve; 312. Deep groove ball bearing; 32. Worm gear; 4. Adjusting sleeve; 41. Slotted. Detailed Implementation

[0020] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0022] In this embodiment of the invention, all directional indicators (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0023] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of this utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0024] This embodiment provides an adjustable high-precision tool magazine reducer for use as a torque reducer in the tool magazine's rotating tool selection operation. It includes a housing 1, an input shaft 21, an output shaft 22, and a worm gear structure.

[0025] The input shaft 21 is located on one side of the housing 1. One end of the input shaft 21 is axially extended outward to form an input end for external torque input. The output shaft 22 is located inside the housing 1. In this embodiment, the input shaft 21 and the output shaft 22 are perpendicular to each other to form a right-angle structure. The shaft ends of the input shaft 21 and the output shaft 22 are respectively provided with bevel gears to mesh with each other, so as to realize the torque transmission from the input shaft 21 to the output shaft 22.

[0026] The worm gear structure includes a worm gear 32 and a worm. The worm and the output shaft 22 are coaxially mounted in the housing 1. One end of the worm is connected to the output shaft 22 through an expansion sleeve 311, realizing torque transmission from the output shaft 22 to the worm and effectively reducing wear and slippage during long-term use. Furthermore, deep groove ball bearings 312 are respectively fitted on the outer circumference of the worm and the outer circumference of the output shaft 22 to adjust the coaxiality of the worm and the output shaft 22, effectively avoiding torque transmission failure and transmission noise caused by coaxiality problems.

[0027] The worm gear 32 is installed inside the housing 1 and meshes with the worm to realize the torque transmission from the worm to the worm gear 32. One end of the worm gear 32 is provided with an output flange 11. The output flange 11 is coaxially arranged with the worm gear 32 and is fixedly connected by a pin sleeve, so that the output flange 11 can be used to connect with external equipment to output torque.

[0028] The output flange 11 is positioned and supported by tapered roller bearings between it and the housing 1 to ensure the stability of the rotation of the output flange 11 and to prevent it from shifting.

[0029] In the application scenario of the reducer described in this embodiment, a large centrifugal force occurs during the tool magazine rotation selection process, which causes significant wear on the gears of the worm wheel 32 of the reducer. Long-term use will lead to a decrease in the accuracy of the reducer itself, affecting the overall use of the tool magazine. Therefore, as a preferred embodiment, the worm is a double-lead worm 31. Specifically, the helical teeth on the double-lead worm 31 are configured such that the tooth backlash gradually increases or decreases along the axial direction. When wear occurs during long-term use, the tooth backlash is adjusted by setting the position of the double-lead worm 31 meshing with the worm wheel 32 in the axial direction to ensure full meshing between the gears.

[0030] Furthermore, an axial adjustment structure is provided for adjusting the axial position of the double-lead worm 31. The axial adjustment structure includes an adjustment sleeve 4, which is a hollow cylindrical structure. One side of the shaft end of the double-lead worm 31 passes through the adjustment sleeve 4, and one or more tapered roller bearings are provided on the outer circumference of the shaft end of the double-lead worm 31. The outer circumference of the tapered roller bearings is fitted with the inner circumference of the adjustment sleeve 4 to form a positioning support for the double-lead worm 31 and allow it to rotate relative to the adjustment sleeve 4.

[0031] The outer circumference of the adjusting sleeve 4 is threaded so that the adjusting sleeve 4 and the housing 1 are connected by a threaded connection. This allows the depth of the adjusting sleeve 4 relative to the housing 1 to be adjusted, thereby adjusting the axial position of the double-lead worm gear 31. The output shaft 22 and the other shaft end of the double-lead worm gear 31 are connected by a through-sleeve. The output shaft 22 forms a circular hole of a set depth along the axial direction. The shaft end of the double-lead worm gear 31 passes through the circular hole, and there is a certain margin between the shaft end and the circular hole to allow for axial adjustment of the double-lead worm gear 31.

[0032] Furthermore, the housing 1 has a slot 41 of a set thickness radially provided at the connection port for installing the adjusting sleeve 4, and a screw hole provided through the slot 41. After the adjusting sleeve 4 is set to a set depth in the housing 1, by screwing the screw into the screw hole and tightening it, a certain deformation can be generated at the slot 41, so that the housing 1 hugs the adjusting sleeve 4 inward, so that the adjusting sleeve 4 cannot rotate in this state, thereby achieving the positioning effect of the adjusting sleeve 4 and the double-lead worm gear 31.

[0033] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. An adjustable high-precision tool magazine reducer, characterized in that, The enclosure includes a housing (1) and a worm gear (32) structure disposed within the housing (1). The worm gear (32) structure forms an input end and an output end on both sides of the housing (1). The worm gear (32) structure includes a double-lead worm (31) and a worm wheel (32). An axial adjustment structure for adjusting the axial position of the double-lead worm (31) is provided on one side of the housing (1). The axial adjustment structure includes an adjustment sleeve (4), which is a hollow cylindrical structure. One side of the shaft end of the double-lead worm (31) passes through the adjustment sleeve. The entire set (4) is provided with one or more tapered roller bearings sleeved on the outer periphery of the shaft end of the double lead worm (31). The outer periphery of the tapered roller bearings is fitted with the inner periphery of the adjusting sleeve (4) to form a positioning support for the double lead worm (31) and rotation relative to the adjusting sleeve (4). The outer periphery of the adjusting sleeve (4) is provided with threads so that the adjusting sleeve (4) and the housing (1) form a threaded connection. By rotating the adjusting sleeve (4), the depth of the adjusting sleeve (4) relative to the housing (1) can be adjusted, thereby adjusting the axial position of the double lead worm (31).

2. The adjustable high-precision tool magazine reducer according to claim 1, characterized in that, The box (1) has a connection port on one side for threaded connection with the adjustment sleeve (4), and a slot (41) is provided on one side of the connection port, with a screw hole through the slot (41).

3. The adjustable high-precision tool magazine reducer according to claim 1, characterized in that, The input end includes an input shaft (21) and an output shaft (22) passing through the housing (1). The input shaft (21) and the output shaft (22) are connected, and the output shaft (22) is connected to the shaft end of the double-lead worm gear (31).

4. The adjustable high-precision tool magazine reducer according to claim 3, characterized in that, The input shaft (21) is perpendicular to the output shaft (22), and the input shaft (21) and the output shaft (22) are connected by bevel gear transmission.

5. The adjustable high-precision tool magazine reducer according to claim 3, characterized in that, The shaft end of the double-lead worm (31) is coaxially inserted into the output shaft (22), and the outer periphery of the output shaft (22) is fitted with an expansion sleeve (311) for holding the output shaft (22) and the double-lead worm (31).

6. The adjustable high-precision tool magazine reducer according to claim 5, characterized in that, The outer periphery of the double-lead worm gear (31) and the outer periphery of the output shaft (22) are respectively fitted with deep groove ball bearings (312).

7. The adjustable high-precision tool magazine reducer according to claim 1, characterized in that, The output end includes an output flange (11), which is connected to the worm gear (32).

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