Gear hobbing machine for machining worm gear of electric actuating mechanism

Abstract

The utility model discloses a gear hobbing machine for machining a worm gear of an electric actuating mechanism, which is characterized in that a plurality of different types of hobbing cutters are arranged on a rotating frame, when the hobbing cutters need to be replaced, the rotating frame is driven by a geneva wheel mechanism to intermittently rotate at a fixed distance, and then the needed hobbing cutters need to be replaced for use. In addition, the hobbing cutter can be rapidly replaced through the supporting and connecting part and the limiting nut, due to the fact that the side, away from the second motor, of the driving rod is exposed out of the gear hobbing machine body, the hobbing cutter needing to be used subsequently can be installed on the rotating frame without shutdown, shutdown replacement is not needed, and the hobbing cutter is more rapid and convenient to change.

Description

Technical Field

[0001] This utility model relates to the field of worm gear machining, and more specifically, it relates to a gear hobbing machine for machining worm gears of electric actuators. Background Technology

[0002] A worm gear is a gear that meshes with a worm and has a special tooth profile. During the manufacturing process, a gear hobbing machine is used to process this tooth profile. There are many different models of worm gears, and the tooth profiles of different models are different. Different gear hobbing cutters are required for processing. When it is necessary to change the gear hobbing cutter, the machine needs to be stopped for replacement. Frequent replacements also consume a lot of time, which to some extent reduces production efficiency and increases the labor intensity of workers.

[0003] Based on the above, the purpose of this utility model is to provide a gear hobbing machine for machining worm gears of electric actuators, so as to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a gear hobbing machine for machining worm gears in electric actuators. This invention sets multiple gear hobbing cutters of different models on a rotating frame. When it is necessary to replace the gear hobbing cutter, the rotating frame is driven to rotate by a switching module, thereby changing the required gear hobbing cutter for use. This shortens the time required to replace the gear hobbing cutter and makes the replacement of gear hobbing cutters more convenient.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a gear hobbing machine for machining worm gears of an electric actuator, comprising a gear hobbing machine body, a rotating frame rotatably connected to the gear hobbing machine body, a plurality of mounting frames rotatably connected to the rotating frame, drive rods detachably connected to the mounting frames, gear hobbing cutters of different models respectively provided on the plurality of drive rods, a mounting table slidably connected to the gear hobbing machine body, a drive shaft rotatably connected to the mounting table, drive grooves for the drive shaft to be inserted on the drive rods, both the drive shaft and the drive grooves having a polygonal structure, a drive mechanism for driving the mounting table to move and driving the drive shaft to rotate provided on the gear hobbing machine body, and a switching module for driving the rotating frame to rotate provided on the gear hobbing machine body.

[0006] By adopting the above technical solution, when it is necessary to replace the gear hobbing cutter, the user drives the rotating frame to rotate by switching the module until the required gear hobbing cutter is rotated to be flush with the drive shaft. Then, the drive shaft is driven by the drive mechanism to move closer to the drive rod until the drive shaft is inserted into the drive groove. At this time, the drive shaft can be driven to rotate by the drive mechanism, and then the gear hobbing cutter can be rotated by the drive shaft and the drive groove. At this time, the tooth profile of the worm gear can be machined.

[0007] The present invention is further configured such that: the switching module includes a Geneva mechanism, the Geneva mechanism includes a Geneva wheel and a drive wheel, both of which are rotatably connected to the main body of the gear hobbing machine; a motor is provided on the main body of the gear hobbing machine; the output shaft of the motor is fixedly connected to the drive wheel; and the Geneva wheel is fixedly connected to the rotating frame.

[0008] The present invention is further configured such that: the gear hobbing cutter is detachably connected to the drive rod; the drive rod is provided with a support portion for limiting the position of the gear hobbing cutter; a key bar is fixedly connected to the drive rod; the gear hobbing cutter is provided with a mounting hole and a keyway for the drive rod and the key bar to be inserted; and a limiting nut is threadedly connected to the drive rod.

[0009] The present invention is further configured such that both the drive shaft and the drive groove are frustoconical in shape.

[0010] The present invention is further configured such that: the drive module includes an electric push rod fixedly connected to the main body of the gear hobbing machine, the extended end of the electric push rod is fixedly connected to the mounting platform, a second motor is provided on the mounting platform, and the output shaft of the second motor is fixedly connected to the drive shaft.

[0011] The present invention is further configured such that the drive rod on the side away from the second motor is exposed outside the main body of the gear hobbing machine.

[0012] In summary, this utility model has the following beneficial effects:

[0013] This invention arranges multiple hobbing cutters of different models on a rotating frame. When a hobbing cutter needs to be replaced, the rotating frame is driven by a grooved wheel mechanism to rotate intermittently at a fixed distance, thereby allowing the replacement of the required hobbing cutter. The hobbing cutter can also be quickly replaced through the support part and the limit nut. Since the drive rod on the side away from the motor is exposed outside the hobbing machine body, the hobbing cutter to be used can be installed on the rotating frame without stopping the machine, making the replacement of hobbing cutters faster and more convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model patent. Figure 1 This shows the overall structure of the pile foundation testing device;

[0015] Figure 2 for Figure 1 Enlarged view of part A;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model patent. Figure 2 This shows the positional relationship between the main body of the gear hobbing machine and the rotating frame;

[0017] Figure 4 This is a schematic diagram of the structure of this utility model patent. Figure 3 This shows the structure of the Geneva mechanism.

[0018] In the diagram: 1. Main body of the gear hobbing machine; 2. Rotating frame; 3. Mounting frame; 4. Drive rod; 5. Gear hobbing cutter; 6. Mounting platform; 7. Drive shaft; 8. Drive groove; 9. Grooved wheel; 10. Drive wheel; 11. Motor 1; 12. Support part; 13. Key bar; 14. Limit nut; 15. Electric push rod; 16. Motor 2. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "provided with," "set up / connected," "connection," etc., should be interpreted broadly. For example, "connection" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The present invention will now be described in detail with reference to the accompanying drawings.

[0023] A gear hobbing machine for machining worm gears in electric actuators, such as Figures 1 to 4 As shown, the machine includes a gear hobbing machine body 1, a rotating frame 2 rotatably connected to the gear hobbing machine body 1, several mounting frames 3 rotatably connected to the rotating frame 2, drive rods 4 detachably connected to the mounting frames 3, and gear hobbing cutters 5 of different models respectively mounted on the drive rods 4. A mounting table 6 is slidably connected to the gear hobbing machine body 1, and a drive shaft 7 is rotatably connected to the mounting table 6. A drive groove 8 is opened on the drive rod 4 for the drive shaft 7 to be inserted. Both the drive shaft 7 and the drive groove 8 are polygonal structures. The gear hobbing machine body 1 is equipped with a drive mechanism for driving the mounting table 6 to move and driving the drive shaft 7 to rotate. The gear hobbing machine body 1 is also equipped with a switching module for driving the rotating frame 2 to rotate.

[0024] Furthermore, the switching module includes a Geneva mechanism, which includes a Geneva wheel 9 and a drive wheel 10. Both the Geneva wheel 9 and the drive wheel 10 are rotatably connected to the hobbing machine body 1. A motor 11 is installed on the hobbing machine body 1. The output shaft of the motor 11 is fixedly connected to the drive wheel 10, and the Geneva wheel is fixedly connected to the rotating frame.

[0025] Furthermore, the gear hobbing cutter 5 is detachably connected to the drive rod 4. The drive rod 4 has a support portion 12 machined on it to limit the position of the gear hobbing cutter 5. A key bar 13 is fixedly connected to the drive rod 4. The gear hobbing cutter 5 is provided with mounting holes and keyways for the drive rod 4 and the key bar 13 to be inserted. A limit nut 14 is threadedly connected to the drive rod 4.

[0026] Furthermore, both the drive shaft 7 and the drive groove 8 are arranged in a frustoconical shape.

[0027] Furthermore, the drive module includes an electric push rod 15 fixedly connected to the main body of the gear hobbing machine. The extended end of the electric push rod 15 is fixedly connected to the mounting platform 6. The mounting platform 6 is equipped with a second motor 16, and the output shaft of the second motor 16 is fixedly connected to the drive shaft 7.

[0028] Furthermore, the drive rod 4 on the side away from the motor 16 protrudes outside the gear hobbing machine body 1. An openable protective cover can be installed here to prevent the exposed gear hobbing cutter 5 from colliding with external objects.

[0029] Working principle: When it is necessary to replace the hobbing cutter 5, the user drives the drive wheel 10 to rotate via motor 11. The drive wheel 10 then drives the rotating frame 2 to rotate intermittently at a fixed distance via the grooved wheel 9 until the required hobbing cutter 5 rotates to be flush with the drive shaft 7. Then, the electric push rod 15 drives the drive shaft 7 to move closer to the drive rod 4 until the drive shaft 7 is inserted into the drive groove 8. The drive shaft 7 is truncated cone shape, making it easier to insert into the drive groove 8. At this time, the drive shaft 7 can be driven to rotate via motor 2 16, which in turn drives the hobbing cutter 5 to rotate via the drive shaft 7 and the drive groove 8. At this time, the tooth profile of the worm gear can be machined.

[0030] When it is necessary to replace the hobbing cutter 5 on the drive rod 4, simply remove the limiting nut 14 to remove the hobbing cutter 5 from the drive rod 4. Then, insert the new hobbing cutter 5 onto the drive rod 4. The support part 12 will limit one end of the hobbing cutter 5. After resetting the limiting nut 14, the limiting nut 14 will limit the other side of the hobbing cutter 5. The drive rod 4 will drive the hobbing cutter 5 to rotate through the key bar 13 and keyway. The side of the drive rod 4 away from the motor 16 will be exposed outside the hobbing machine body 1. The hobbing cutter 5 that is needed later can be installed on the rotating frame 2 without stopping the machine. This makes the replacement of the hobbing cutter 5 faster and more convenient.

[0031] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A gear hobbing machine for machining worm gears in electric actuators, comprising a gear hobbing machine body (1), characterized in that: The gear hobbing machine body (1) is rotatably connected to a rotating frame (2), and several mounting frames (3) are rotatably connected to the rotating frame (2). A drive rod (4) is detachably connected to the mounting frame (3). Each of the drive rods (4) is provided with a gear hobbing cutter (5) of a different model. The gear hobbing machine body (1) is slidably connected to a mounting table (6), and a drive shaft (7) is rotatably connected to the mounting table (6). A drive groove (8) for the drive shaft (7) to be inserted is provided on the drive rod (4). Both the drive shaft (7) and the drive groove (8) are polygonal structures. The gear hobbing machine body (1) is provided with a drive mechanism for moving the mounting table (6) and rotating the drive shaft (7). The gear hobbing machine body (1) is provided with a switching module for rotating the rotating frame (2).

2. The gear hobbing machine for machining worm gears in an electric actuator according to claim 1, characterized in that: The switching module includes a Geneva mechanism, which includes a Geneva wheel (9) and a drive wheel (10). Both the Geneva wheel (9) and the drive wheel (10) are rotatably connected to the hobbing machine body (1). A motor (11) is provided on the hobbing machine body (1). The output shaft of the motor (11) is fixedly connected to the drive wheel (10). The Geneva wheel (9) is fixedly connected to the rotating frame (2).

3. The gear hobbing machine for machining worm gears in an electric actuator according to claim 1, characterized in that: The hobbing cutter (5) is detachably connected to the drive rod (4). The drive rod (4) is provided with a support part (12) for limiting the hobbing cutter (5). A key bar (13) is fixedly connected to the drive rod (4). The hobbing cutter (5) is provided with a mounting hole and a keyway for the drive rod (4) and the key bar (13) to be inserted. A limit nut (14) is threadedly connected to the drive rod (4).

4. A gear hobbing machine for machining worm gears in an electric actuator according to claim 1, characterized in that: Both the drive shaft (7) and the drive groove (8) are arranged in a frustum shape.

5. A gear hobbing machine for machining worm gears in an electric actuator according to claim 1, characterized in that: The drive mechanism includes an electric push rod (15) fixedly connected to the gear hobbing machine body (1). The extended end of the electric push rod (15) is fixedly connected to the mounting platform (6). A second motor (16) is provided on the mounting platform (6). The output shaft of the second motor (16) is fixedly connected to the drive shaft (7).

6. A gear hobbing machine for machining worm gears in an electric actuator according to claim 5, characterized in that: The drive rod (4) on the side away from the motor (16) is exposed outside the gear hobbing machine body (1).

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