Worm Gear Press Fitting Device

Abstract

This application provides a worm gear pressing device, including: a machine base; a support base mounted on the machine base for supporting a rotor; and a pressing mechanism including a material-taking head positioned opposite the support base, a lifting seat supporting the material-taking head, a driver for driving the lifting seat to move up and down, and a support frame for supporting the driver. The support frame is mounted on the machine base, and the power output end of the driver is connected to the lifting seat. The material-taking head has a receiving hole for inserting the worm gear, and the receiving hole contains a limiting structure for moving the worm gear towards the support base. In this embodiment, the worm gear pressing device utilizes the receiving hole to accommodate the worm gear, which helps prevent the worm gear from tilting and popping out, pressing the worm gear onto the rotor shaft and reducing the safety risks caused by worm gear tilting.

Description

Technical Field

[0001] This application belongs to the field of motor processing technology, and more specifically, relates to a worm gear press-fitting device. Background Technology

[0002] In some motor manufacturing processes, worm gears need to be press-fitted onto the rotor shaft. To prevent the worm gear from rotating or sliding relative to the shaft, the inner wall of the worm gear and the outer wall of the shaft usually need to be interference-fitted, which requires a large pressure during the press-fitting process. Existing press-fitting devices typically use clamps to hold the worm gear, control the alignment of the worm gear with the shaft, and then use a linear actuator to push the worm gear towards the shaft. Although chamfers are provided at the ends of both the inner wall of the worm gear and the end of the shaft, there is still a risk of press-fitting failure, worm gear tilting, or even worm gear ejection during stamping, posing a significant safety hazard. Utility Model Content

[0003] The purpose of this application is to provide a worm gear pressing device to solve the technical problem of significant safety risks during worm gear pressing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a worm gear pressing device, comprising: Machine tool; A support base is mounted on the machine base and is used to support the rotor. The pressing mechanism includes a material taking head disposed opposite to the support base, a lifting base supporting the material taking head, a driver for driving the lifting base to move up and down, and a vertical frame supporting the driver. The vertical frame is mounted on the machine base, and the power output end of the driver is connected to the lifting base. The material taking head has a receiving hole for inserting a worm gear, and the receiving hole has a limiting structure for driving the worm gear to move toward the support base.

[0005] In this embodiment, a receiving head with a receiving hole is used to accommodate the worm gear. When the driver drives the receiving head to move the worm gear towards the rotor, the worm gear aligns with the rotor's axis of rotation. The receiving hole restricts the worm gear's lateral movement along the rotor, thus preventing the worm gear from tilting and popping out. This facilitates pressing the worm gear onto the rotor's axis of rotation and reduces the safety risks caused by worm gear tilting. The limiting structure restricts the worm gear's movement away from the rotor, facilitating control of the worm gear's position along the rotor's axis of rotation when pressed onto the rotor.

[0006] In one embodiment, the limiting structure is a limiting ring; a positioning rod for aligning with the axis of the rotor is slidably inserted in the limiting ring, and the outer diameter of the end of the positioning rod away from the support is larger than the inner diameter of the limiting ring.

[0007] By adopting the above-mentioned technical means, it is beneficial to prevent the worm from tilting and to make it easier to control the alignment of the worm with the shaft.

[0008] In one embodiment, a first spring for pushing the positioning rod toward the support is installed in the receiving hole, and the two ends of the first spring abut against the lifting seat and the positioning rod, respectively.

[0009] By adopting the above-mentioned technical means, it is convenient to insert the receiving hole during press fitting, so as to avoid collision with the rotating shaft.

[0010] In one embodiment, the end of the positioning rod near the support base is provided with a positioning section for engaging with a positioning groove into the rotor; and / or, The inner diameter of the limiting ring is larger than the outer diameter of the rotor shaft.

[0011] By adopting the above-mentioned technical means, it is easier to align the positioning rod with the center of the rotating shaft; it also helps to prevent the rotating shaft from colliding with the limiting ring.

[0012] In one embodiment, a sliding rod is installed on the lifting seat, and a sliding sleeve is installed on the upright frame. The sliding sleeve is slidably fitted onto the sliding rod. There are multiple sliding rods arranged in a circular array around the material receiving head. There are also multiple sliding sleeves, with each sliding sleeve corresponding to one of the multiple sliding rods.

[0013] By adopting the above-mentioned technical means, stability can be improved.

[0014] In one embodiment, a pressure sensor is installed on the lifting seat, and the pressure sensor is connected to the power output terminal of the driver.

[0015] By employing the above-mentioned technical means, the pressure of press-fitting can be controlled, thus protecting the rotor.

[0016] In one embodiment, the picking head is equipped with a magnetic element for magnetically attracting the worm gear; or, the picking head is magnetic; and / or, The actuator is an electric cylinder.

[0017] By employing the above-mentioned technical means, it is possible to prevent the worm from falling out of the receiving hole and to control the position of the worm.

[0018] In one embodiment, the support base includes an annular seat and a support plate supporting the annular seat. The support plate is connected to the machine base. The annular seat has a clearance hole for inserting the end of the rotor. The clearance hole has a support ring for stopping and positioning the bearing of the rotor.

[0019] By employing the aforementioned technical means, it is beneficial to control the rotor position.

[0020] In one embodiment, a floating seat and a second spring are installed in the clearance hole. The floating seat is used to support the rotor shaft, and the second spring is located on the side of the floating seat away from the lifting seat, with both ends of the second spring abutting against the floating seat and the machine base, respectively.

[0021] By adopting the above-mentioned technical means, it is beneficial to protect the rotating shaft.

[0022] In one embodiment, a limiting hole is provided on the floating seat, and the end of the second spring is placed in the limiting hole.

[0023] By adopting the above-mentioned technical means, it is beneficial to protect the second spring and to maintain the stability of the second spring's position. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the worm gear pressing device provided in the embodiments of this application; Figure 2 A three-dimensional structural schematic diagram of the pressing mechanism provided in the embodiments of this application; Figure 3 A cross-sectional structural diagram of the material handling head and worm gear provided in the embodiments of this application; Figure 4 This is a cross-sectional structural diagram of the support base and rotor provided in an embodiment of this application.

[0026] The following are the labeling elements in the figure: 10. Machine tools; 20. Support base; 21. Annular seat; 211. Clearance hole; 212. Support ring; 22. Support plate; 23. Floating seat; 231. Limiting hole; 24. Second spring; 30. Pressing mechanism; 31. Material handling head; 311. Receiving hole; 312. Limiting structure; 32. Lifting seat; 321. Slide rod; 33. Driver; 34. Stand; 341. Sliding sleeve; 35. Positioning rod; 351. Positioning section; 36. First spring; 37. Pressure sensor; 38. Magnetic suction component; 40. Worm gear; 50. Rotor; 51. Shaft; 511. Positioning groove; 52. Bearing. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 application 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 application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] Please refer to the following: Figures 1 to 3 The worm gear pressing device provided in the embodiments of this application will now be described. The worm gear pressing device includes a machine base 10, a support base 20, and a pressing mechanism 30. The support base 20 is mounted on the machine base 10 and is used to support the rotor 50. The pressing mechanism 30 includes a material taking head 31, a lifting seat 32, a driver 33, and a stand 34. The material taking head 31 is arranged opposite to the support base 20. The lifting seat 32 supports the material taking head 31. The driver 33 is used to drive the lifting seat 32 to rise and fall. The stand 34 supports the driver 33. The power output end of the driver 33 is connected to the lifting seat 32. The stand 34 is mounted on the machine base 10. The material taking head 31 has a receiving hole 311 for inserting the worm gear 40. The receiving hole 311 has a limiting structure 312 for driving the worm gear 40 to move toward the support base 20.

[0032] It should be noted that the worm 40 has an adapter hole in the middle, and the rotor 50 has a shaft 51. After assembly, the shaft 51 is inserted into the adapter hole, and the inner wall of the adapter hole is interference-fitted with the outer circumference of the shaft 51. The receiving hole 311 is located directly opposite the middle of the support base 20. After the rotor 50 is loaded onto the support base 20 and the worm 40 is installed into the receiving hole 311, the adapter hole of the worm 40 is directly opposite the shaft 51 of the rotor 50. The shaft 51 can be, but is not limited to, loaded on the support base 20 in a vertical direction, and the lifting direction of the lifting seat 32 is along the axis of the shaft 51.

[0033] In this embodiment, a take-up head 31 is used, with a receiving hole 311 provided on it. The receiving hole 311 accommodates the worm gear 40. When the driver 33 drives the take-up head 31 to move the worm gear 40 toward the rotor 50, the worm gear 40 is aligned with the shaft 51 of the rotor 50. The receiving hole 311 restricts the worm gear 40's lateral movement along the rotor 50, thus preventing the worm gear 40 from tilting and popping out. This facilitates pressing the worm gear 40 onto the shaft 51 of the rotor 50, reducing the safety risks caused by the worm gear 40 tilting. The limiting structure 312 restricts the worm gear 40 from moving away from the rotor 50, thereby controlling the position of the worm gear 40 along the axis of the shaft 51 when it is pressed onto the rotor 50.

[0034] In one embodiment of this application, please refer to Figures 1 to 3 The limiting structure 312 is a limiting ring; a positioning rod 35 for aligning the axis of the rotor 50 is slidably inserted in the limiting ring, and the outer diameter of the end of the positioning rod 35 away from the support seat 20 is larger than the inner diameter of the limiting ring. The limiting ring can apply pressure to the worm 40 in the circumferential direction during press-fitting to maintain pressure balance and prevent the worm 40 from tilting; the positioning rod 35 can further prevent the worm 40 from tilting, making it easier for the worm 40 to be coaxially aligned with the rotating shaft 51.

[0035] In one embodiment of this application, please refer to Figures 1 to 3A first spring 36 is installed inside the receiving hole 311. The first spring 36 is used to push the positioning rod 35 to slide towards the support base 20. The two ends of the first spring 36 abut against the lifting base 32 and the positioning rod 35, respectively. By using the first spring 36, the positioning rod 35 can be elastically pushed to extend towards the rotating shaft 51 of the rotor 50, so as to align with the center of the rotating shaft 51, and can be retracted into the receiving hole 311 during press-fitting to avoid hard contact with the rotating shaft 51 and damage to the rotor 50. Specifically, the first spring 36 is placed on the side of the limiting ring away from the support base 20, and the end of the positioning rod 35 away from the support base 20 is provided with a limiting section, which is limited to the side of the limiting ring away from the support base 20; the end of the picking head 31 away from the support base 20 is provided with a connecting plate, which is connected to the lifting base 32 and covers the end of the receiving hole 311 away from the support base 20, and the first spring 36 abuts against the connecting plate. This can prevent the positioning rod 35 from falling out of the receiving hole 311.

[0036] In one embodiment of this application, please refer to Figures 1 to 3 The positioning rod 35 has a positioning section 351 at one end near the support base 20 for engaging with the positioning groove 511 of the rotor 50. The positioning section 351 may be, but is not limited to, conical, and the positioning groove 511 is formed at the center of the end of the rotating shaft 51 near the worm 40. Thus, by inserting the positioning section into the positioning groove 511, the positioning rod 35 and the rotating shaft 51 can be kept coaxial during the press-fitting of the rotor 50.

[0037] In one embodiment of this application, please refer to Figures 1 to 3 The inner diameter of the limiting ring is larger than the outer diameter of the rotor shaft 51 of the rotor 50. Here, the inner diameter of the limiting ring can be understood as the inner diameter of the end of the limiting ring closest to the support base 20. In this way, the limiting ring can be prevented from colliding with the rotor shaft 51 during the press-fitting process.

[0038] The adapter hole of the worm gear 40 has a first chamfer at the end near the support base 20, and the rotating shaft 51 has a second chamfer at the end near the worm gear 40. The chamfer structure facilitates the press-fitting of the worm gear 40 onto the rotating shaft 51.

[0039] In one embodiment of this application, please refer to Figures 1 to 3 The picking head 31 is equipped with a magnetic suction element 38 for engaging with the magnetic worm gear 40. This allows the worm gear 40 to be easily magnetically secured within the receiving hole 311, preventing it from falling out during the lifting and lowering of the picking head 31. Alternatively, in other embodiments, the picking head 31 may be magnetic, allowing it to magnetically attract the worm gear 40.

[0040] In one embodiment of this application, please refer to Figures 1 to 3A sliding rod 321 is installed on the lifting seat 32, and a sliding sleeve 341 is installed on the upright frame 34. The sliding sleeve 341 is slidably fitted onto the sliding rod 321. This guides the material-taking head 31 to move linearly. Optionally, there are multiple sliding rods 321 arranged in a circular array around the material-taking head 31, and multiple sliding sleeves 341 corresponding one-to-one with multiple sliding rods 321. This helps improve the stability during the pressing process.

[0041] In one embodiment of this application, please refer to Figures 1 to 3 A pressure sensor 37 is installed on the lifting seat 32, and the pressure sensor 37 is connected to the power output terminal of the driver 33. In this way, the pressure during the pressing process can be detected, so as to facilitate the control of the pressing pressure and avoid damage to the rotor 50.

[0042] In one embodiment of this application, please refer to Figures 1 to 3 The actuator 33 is an electric cylinder. This allows the take-up head 31 to move linearly and controls the stroke and positional accuracy of the worm gear 40 during pressing. Of course, in other embodiments, the actuator 33 can also be a pneumatic cylinder or the like, to control the take-up head 31 to drive the worm gear 40 in linear movement.

[0043] In one embodiment of this application, please refer to Figures 1 to 4 The support base 20 includes an annular seat 21 and a support plate 22 supporting the annular seat 21. The support plate 22 is connected to the machine base 10. The annular seat 21 has a clearance hole 211 for inserting the end of the rotor 50. A support ring 212 is provided in the clearance hole 211, which is used to stop and position the bearing 52 of the rotor 50. In this way, the clearance hole 211 can accommodate the end of the shaft 51, so as to avoid the shaft 51 from deforming and bending due to hard collision with the support base 20 during the pressing process. By using the support ring 212, the bearing 52 of the rotor 50 can be stopped, and the position of the rotor 50 in the vertical direction can be controlled, so as to maintain the relative stability of the height position of the rotor 50 during the pressing of the worm gear 40 to a certain extent. The inner ring of the bearing 52 is interference-fitted with the shaft 51. When the pressing pressure is too high, the bearing 52 can slide along the shaft 51, thereby preventing the shaft 51 from bending and deforming due to excessive pressure.

[0044] In one embodiment of this application, please refer to Figures 1 to 4A floating seat 23 and a second spring 24 are installed inside the clearance hole 211. The floating seat 23 is used to support the rotating shaft 51 of the rotor 50. The second spring 24 is located on the side of the floating seat 23 away from the lifting seat 32, and its two ends abut against the floating seat 23 and the support plate 22, respectively. By using the floating seat 23 and the second spring 24, the rotating shaft 51 can be supported to provide resistance to the rotor 50 when pressing the worm gear 40. The floating seat 23 is located between the support ring 212 and the support plate 22, and the second spring 24 pushes the floating seat 23 against the support ring 212 to support the rotating shaft 51.

[0045] In one embodiment of this application, please refer to Figures 1 to 4 A limiting hole 231 is provided on the floating seat 23, and the end of the second spring 24 is placed in the limiting hole 231. This helps to improve the stability of the position of the second spring 24 and the floating seat 23.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A worm press fitting device characterized by comprising: include: Machine tool; A support base is mounted on the machine base and is used to support the rotor. The pressing mechanism includes a material taking head disposed opposite to the support base, a lifting base supporting the material taking head, a driver for driving the lifting base to move up and down, and a vertical frame supporting the driver. The vertical frame is mounted on the machine base, and the power output end of the driver is connected to the lifting base. The material taking head has a receiving hole for inserting a worm gear, and the receiving hole has a limiting structure for driving the worm gear to move toward the support base.

2. The worm press fitting device according to claim 1, wherein: The limiting structure is a limiting ring; a positioning rod for aligning with the axis of the rotor is slidably inserted in the limiting ring, and the outer diameter of the end of the positioning rod away from the support is larger than the inner diameter of the limiting ring.

3. The worm press fitting device according to claim 2, wherein: A first spring for pushing the positioning rod toward the support is installed in the receiving hole, and the two ends of the first spring abut against the lifting seat and the positioning rod, respectively.

4. The worm press fitting device according to claim 2, wherein: The positioning rod has a positioning section at one end near the support base for engaging with the positioning groove of the rotor; and / or, The inner diameter of the limiting ring is larger than the outer diameter of the rotor shaft.

5. The worm gear pressing device as described in claim 1, characterized in that: The lifting seat is equipped with a sliding rod, and the upright frame is equipped with a sliding sleeve. The sliding sleeve is slidably fitted onto the sliding rod. There are multiple sliding rods arranged in a circular array around the material receiving head. There are also multiple sliding sleeves, with each sliding sleeve corresponding to one of the multiple sliding rods.

6. The worm gear pressing device as described in claim 1, characterized in that: A pressure sensor is installed on the lifting platform, and the pressure sensor is connected to the power output terminal of the driver.

7. The worm gear pressing device as described in claim 1, characterized in that: The material handling head is equipped with a magnetic element for magnetically attracting the worm gear; or, the material handling head is magnetic; and / or, The actuator is an electric cylinder.

8. The worm gear press-fitting device according to any one of claims 1 to 7, characterized in that: The support base includes an annular seat and a support plate supporting the annular seat. The support plate is connected to the machine base. The annular seat has a clearance hole for the end of the rotor to be inserted. The clearance hole has a support ring for the bearing of the rotor to stop and position the rotor.

9. The worm gear pressing device as described in claim 8, characterized in that: A floating seat and a second spring are installed in the clearance hole. The floating seat is used to support the rotor shaft. The second spring is located on the side of the floating seat away from the lifting seat, and the two ends of the second spring abut against the floating seat and the support plate, respectively.

10. The worm gear pressing device as described in claim 9, characterized in that: The floating seat has a limiting hole, and the end of the second spring is placed in the limiting hole.

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