A tooling structure and installation method for realizing the grinding of the gear disc of a locking device

Abstract

The present invention discloses a tooling structure and installation method for realizing the grinding of the gear disc of a locking device, comprising a workbench, a fixedly connected gear-grinding base provided above the workbench, a gear-grinding machine provided at the inner center of the workbench, an inner hole provided at the center of the gear-grinding base, a fixedly connected shaft sleeve provided on the inner hole, a grinding mandrel passing through the shaft sleeve provided in the shaft sleeve, the lower end of the grinding mandrel connected to the gear-grinding machine via a lifting shaft, a fixedly connected transition plate provided at the upper end of the grinding mandrel, a lower gear disc provided above the gear-grinding base, and an upper gear disc provided below the transition plate. The present invention adopts the above-mentioned tooling structure and installation method for realizing the grinding of the gear disc of a locking device, transmits power through the gear-grinding machine, the lifting shaft quickly raises and lowers the upper gear disc, and the shift fork rotates a certain angle to realize multi-directional grinding, thereby solving the problem that the engagement accuracy of the gear disc of the locking device is difficult to ensure.

Description

Technical Field

[0001] The present invention relates to the field of precision measurement technology, and in particular to a tooling structure for implementing a gear grinding tool for a locking device and an installation method. Background Art

[0002] The locking device is a component of the integrated inertial measurement system. As part of the system, it mechanically locks the IMU to the IMU chassis, achieving both positioning and locking. It can withstand mechanical environments such as vibration, shock, and overload, ensuring reliable locking between the IMU and the chassis.

[0003] The locking mechanism's main components include an upper and lower gear plate. When engaged, these two plates mechanically lock the inertial measurement unit (IMU) to the IMU chassis. The upper gear plate is also called the fixed gear plate, while the lower gear plate is also called the lift gear plate. These two plates form a pair of end-face gear plates, utilizing the averaging effect of multiple teeth to improve repeatability.

[0004] Existing technology requires high precision machining of the 60° end face tooth profile, and achieving the required coaxiality of the meshing circle is difficult. By designing specialized grinding tooling, combined with a dedicated grinding machine, the tooth profile and repeatability accuracy of the lifting and fixed sprockets can be guaranteed. Furthermore, the locking device only features a lifting system, not an indexing system, making it difficult to grind every tooth of the sprocket 360°, making the grinding process difficult to carry out. Summary of the Invention

[0005] The purpose of the present invention is to provide a tooling structure and installation method for realizing the grinding of the gear disc of the locking device. The power is transmitted by the gear grinding machine, the lifting shaft quickly raises and lowers the upper gear disc, and the shift fork rotates a certain angle to realize multi-directional grinding, thereby solving the problem that the engagement accuracy of the gear disc of the locking device is difficult to ensure.

[0006] To achieve the above-mentioned objectives, the present invention provides a tooling structure for grinding the gear disc of a locking device, comprising a workbench, a fixedly connected gear-grinding base is provided above the workbench, a gear-grinding machine is provided at the inner center position of the workbench, an inner hole is provided at the center position of the gear-grinding base, a fixedly connected shaft sleeve is provided on the inner hole, a grinding core shaft passing through the shaft sleeve is provided in the shaft sleeve, the lower end of the grinding core shaft is connected to the gear-grinding machine through a lifting shaft, a fixedly connected transition plate is provided at the upper end of the grinding core shaft, a lower gear disc is provided above the gear-grinding base, an upper gear disc is provided below the transition plate, the upper gear disc is meshed with the lower gear disc, a ratchet is provided above the transition plate, and a fork assembly corresponding to the ratchet is provided on the workbench.

[0007] Preferably, through holes are provided on both sides of the lower surface of the lower gear plate, and blind holes corresponding to the through holes are provided on the upper surface of the racket gear base, and the blind holes are engaged with the through holes via positioning pins.

[0008] Preferably, the upper toothed disc is fixedly connected to the transition plate by screws, and the lower surface of the ratchet is fixedly connected to the transition plate by screws.

[0009] Preferably, the tooth surface portion of the lower toothed disc is located above the end surface of the lower toothed disc, the inner ring of the tooth surface of the lower toothed disc is provided with an inner sand retaining ring, and the outer ring of the tooth surface of the lower toothed disc is provided with an outer sand retaining ring.

[0010] Preferably, the fork assembly includes a fork, a coupling, a base and a sleeve, the base is fixedly connected to the workbench by screws, a drive motor is provided inside the base, the motor shaft of the drive motor passes through the center position above the base and is connected to the coupling, the bottom end of the sleeve is sealed with the base, the fork is an inverted L-shaped structure, one end of the bent part of the fork passes through the sleeve and is connected to the coupling, the other end of the bent part of the fork is fitted with the ratchet, and bearings are respectively provided at the upper and lower ends of the fork, and the outer circle part of the bearing is fitted with the inner wall of the sleeve.

[0011] Preferably, the grinding mandrel is arranged at the center of the workbench and the tooth base.

[0012] To achieve the above-mentioned purpose, the present invention also provides a method for installing a tooling for grinding a gear disc of a locking device, comprising the following steps:

[0013] S1. First, install the gear-snapping machine inside the workbench. Place the gear-snapping base on the workbench, with the inner hole being roughly coaxial with the center hole of the workbench. Place the shaft sleeve into the inner hole of the gear-snapping base.

[0014] S2. Install the positioning pins in the blind holes at both ends of the racket gear base, with the lower ends close together, install the lower gear plate on the racket gear base, and install the positioning pins in the through holes at both ends for positioning;

[0015] S3. Install the inner and outer sand retaining rings on the inner and outer rings of the lower gear disc respectively. Apply vaseline evenly on the bottom of the inner and outer sand retaining rings, and add the abrasive sand evenly into the inner and outer sand retaining rings.

[0016] S4. Fix the upper gear plate and the transition plate with screws, making sure that the upper gear plate and the transition plate are coaxial;

[0017] S5. Insert the grinding mandrel along the center of the lower gear disc, install the lower end into the shaft sleeve, and press it against the gear-beating machine and the lifting shaft;

[0018] S6. Install the upper toothed disc and the transition plate onto the grinding mandrel, with the grinding mandrel resting against the upper toothed disc, and engage the upper toothed disc with the lower toothed disc;

[0019] S7. Install the ratchet, ensure the coaxiality of the ratchet and the transition plate, and adjust the fork assembly so that the gear mechanism can drive the gear disc to grind up and down and can be dislocated intermittently.

[0020] Therefore, the present invention adopts the above-mentioned tooling structure and installation method for realizing the gear grinding of the locking device, and its technical effects are as follows:

[0021] (1) The present invention can achieve accurate engagement of the upper and lower toothed discs by controlling the transition plate, upper toothed disc, grinding core shaft, and ratchet wheel to be coaxial during installation, thereby improving the grinding effect and thus improving the toothed disc engagement accuracy.

[0022] (2) The present invention is provided with a shift fork assembly to adjust the position of the upper gear disc, realize intermittent dislocation, and grind at all angles of 360° to ensure that each tooth can be fully grinded.

[0023] (3) The present invention is provided with an inner sand retaining ring and an outer sand retaining ring, and the rings block the grinding sand to prevent the grinding sand from flowing out.

[0024] (4) The present invention is provided with a grinding core shaft, which does not need to be pressed against the upper gear disc, but instead presses against the transition plate, and uses the transition plate to drive the upper gear disc to perform grinding, thereby fully protecting the upper gear disc.

[0025] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of an embodiment of a tooling structure and installation method for a geared disc of a locking device according to the present invention;

[0027] Figure 2 It is a structural diagram of an upper gear plate and a lower gear plate of an embodiment of a gear plate grinding tooling structure and an installation method for a locking device of the present invention;

[0028] Figure 3 It is a structural schematic diagram of a fork assembly according to an embodiment of the present invention, which realizes a gear grinding tooling structure and an installation method of a locking device.

[0029] Reference numerals

[0030] 1. Workbench; 2. Gear-beating base; 3. Outer sand ring; 4. Grinding mandrel; 5. Bushing; 6. Inner sand ring; 7. Transition plate; 8. Locating pin; 9. Ratchet; 10. Fork; 11. Upper gear plate; 12. Lower gear plate; 13. Lifting shaft; 14. Gear-beating machine; 15. Base; 16. Outer sleeve; 17. Coupling; 18. Bearing; 19. Drive motor. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0032] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0033] As shown in the figure, a tooling structure for grinding a gear disc of a locking device includes a workbench 1. A fixedly connected gear-grinding base 2 is provided above the workbench 1. The gear-grinding base 2 is used to support the entire tooling structure. A gear-grinding machine 14 is provided at the center position of the workbench 1, and power transmission is achieved by energizing the gear-grinding machine 14. An inner hole is provided at the center position of the gear-grinding base 2, and the inner hole is substantially coaxial with the gear-grinding machine 14 of the workbench 1. A fixedly connected shaft sleeve 5 is provided on the inner hole, and a grinding core shaft 4 passing through the shaft sleeve 5 is provided in the shaft sleeve 5. The lower end of the grinding core shaft 4 is connected to the gear-grinding machine 14 via a lifting shaft 13. The lifting shaft 13 passes through the workbench 1 and abuts against the grinding core shaft 4. The gear-grinding machine 14 transmits power to the grinding core shaft 4 by means of the lifting shaft 13.

[0034] A transition plate 7 is fixedly attached to the upper end of the grinding mandrel 4. A lower toothed disc 12 is disposed above the toothed base 2. The lower surface of the lower toothed disc 12 is provided with through-holes on both sides. The upper surface of the toothed base 2 is provided with blind holes corresponding to the through-holes, which are engaged with the through-holes via locating pins 8. An upper toothed disc 11 is disposed below the transition plate 7. The upper toothed disc 11 is fixedly attached to the transition plate 7 via screws and meshes with the lower toothed disc 12. The upper and lower toothed discs 11 and 12 are mounted with their tooth surfaces facing each other, initially in meshing engagement. The toothed surface of the lower toothed disc 12 is located above the end face of the lower toothed disc 12. An inner sand retaining ring 6 is provided on the inner ring of the toothed disc 12, while an outer sand retaining ring 3 is provided on the outer ring of the toothed disc 12. Abrasive sand is evenly added to the inner and outer sand retaining rings 6 and 3, and the rings block the abrasive sand to prevent it from escaping. The grinding mandrel 4 is positioned at the center of the workbench 1 and the toothed base 2. Specifically, the grinding core shaft 4 is arranged at the center of the entire structure and performs axial movement to achieve the grinding effect.

[0035] A ratchet 9 is mounted above the transition plate 7, its lower surface fixedly connected to the transition plate 7 via screws. A shift fork assembly corresponding to the ratchet 9 is mounted on the workbench 1. The shift fork assembly comprises a shift fork 10, a coupling 17, a base 15, and a sleeve 16. The base 15 is fixedly connected to the workbench 1 via screws. A drive motor 19 is housed within the base 15, its shaft extending through the center of the base 15 and connected to the coupling 17. The bottom end of the sleeve 16 is sealed to the base 15, maintaining a sealed seal across the entire shift fork assembly. The shift fork 10 has an inverted L-shaped structure. One end of the shift fork 10's bend extends through the sleeve 16 and connects to the coupling 17, while the other end of the bend engages with the ratchet 9. Bearings 18 are mounted at each of the upper and lower ends of the shift fork 10, with the outer diameter of the bearing 18 engaging the inner wall of the sleeve 16. When the shift fork 10 rotates, the bearings 18 rotate with it without stagnation.

[0036] During actual use, the driving motor 19 is energized to provide power, and the motor shaft rotates to drive the fork 10 to rotate 360°. The fork 10 and the ratchet 9 only contact at a fixed angle. When a cycle of grinding is completed, the upper toothed disc 11 is in a raised state, and the fork 10 rotates to a position of contact with the ratchet 9, driving the ratchet 9 to rotate a certain angle to continue the next cycle of grinding.

[0037] A method for installing a tooling for grinding a gear disc of a locking device comprises the following steps:

[0038] S1. First, install the gear-beating machine 14 inside the workbench 1, place the gear-beating base 2 on the workbench 1, with the inner hole being substantially coaxial with the center hole of the workbench 1, and place the shaft sleeve 5 in the inner hole of the gear-beating base 2.

[0039] S2. Install the positioning pins 8 in the blind holes at both ends of the racket gear base 2, with the lower ends close together, install the lower gear plate 12 on the racket gear base 2, and install the positioning pins 8 in the through holes at both ends for positioning.

[0040] S3, the inner sand ring 6 and the outer sand ring 3 are respectively installed on the inner and outer rings of the lower gear disc 12. Vaseline is evenly applied to the bottom of the inner and outer sand rings 6 and 3, and the grinding sand is evenly added into the inner and outer sand rings 6 and 3.

[0041] S4. Fix the upper gear disc 11 and the transition plate 7 with screws, ensuring that the upper gear disc 11 and the transition plate 7 are coaxial.

[0042] S5. Insert the grinding mandrel 4 along the center of the lower gear disc 12, install the lower end into the shaft sleeve 5, and abut against the gear-beating machine 14 and the lifting shaft 13.

[0043] S6. Install the upper toothed disc 11 and the transition plate 7 above the grinding mandrel 4. The grinding mandrel 4 presses against the upper toothed disc 11, and the upper toothed disc 11 is engaged with the lower toothed disc 12.

[0044] S7. Install the ratchet 9, ensure the coaxiality of the ratchet 9 and the transition plate 7, and adjust the shift fork assembly so that the gear-beating machine 14 can drive the gear disc to grind up and down, and can be dislocated intermittently.

[0045] Therefore, the present invention adopts the above-mentioned tooling structure and installation method for grinding the gear disc of the locking device. The power is transmitted by the gear grinding machine, the lifting shaft quickly raises and lowers the upper gear disc, and the shift fork rotates a certain angle to achieve multi-directional grinding, which solves the problem that the engagement accuracy of the gear disc of the locking device is difficult to ensure.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solutions of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A tooling structure for grinding a gear disc of a locking device, characterized by: The invention comprises a workbench, wherein a fixedly connected gear-beating base is provided above the workbench, a gear-beating machine is provided at the inner center position of the workbench, an inner hole is provided at the center position of the gear-beating base, a fixedly connected shaft sleeve is provided on the inner hole, a grinding core shaft passing through the shaft sleeve is provided in the shaft sleeve, the lower end of the grinding core shaft is connected to the gear-beating machine through a lifting shaft, a fixedly connected transition plate is provided at the upper end of the grinding core shaft, a lower gear disc is provided above the gear-beating base, an upper gear disc is provided below the transition plate, the upper gear disc is meshed with the lower gear disc, a ratchet is provided above the transition plate, and a fork assembly corresponding to the ratchet is provided on the workbench.

2. A tooling structure for grinding a gear disc of a locking device according to claim 1, characterized in that: Through holes are provided on both sides of the lower surface of the lower gear plate, and blind holes corresponding to the through holes are provided on the upper surface of the racket gear base. The blind holes are connected to the through holes through positioning pins.

3. The tooling structure for grinding the gear disc of a locking device according to claim 1, characterized in that: The upper toothed disc is fixedly connected to the transition plate via screws, and the lower surface of the ratchet is fixedly connected to the transition plate via screws.

4. The tooling structure for grinding the gear disc of a locking device according to claim 1, characterized in that: The tooth surface portion of the lower toothed disc is located above the end surface of the lower toothed disc. The inner ring of the toothed disc is provided with an inner sand retaining ring, and the outer ring of the toothed disc is provided with an outer sand retaining ring.

5. The tooling structure for grinding the gear disc of a locking device according to claim 1, characterized in that: The fork assembly includes a fork, a coupling, a base and a sleeve. The base is fixedly connected to the workbench by screws. A drive motor is provided inside the base. The motor shaft of the drive motor passes through the center position above the base and is connected to the coupling. The bottom end of the sleeve is sealed with the base. The fork is an inverted L-shaped structure. One end of the bent fork passes through the sleeve and is connected to the coupling. The other end of the bent fork is fitted with the ratchet. Bearings are respectively provided at the upper and lower ends of the fork, and the outer circular part of the bearing fits with the inner wall of the sleeve.

6. The tooling structure for grinding the gear disc of a locking device according to claim 1, characterized in that: The grinding core shaft is arranged at the center of the workbench and the tooth base.

7. A method for installing a tool for grinding a gear disc of a locking device, applied to a tool structure for grinding a gear disc of a locking device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. First, install the gear-beating machine inside the workbench, place the gear-beating base on the workbench, with the inner hole basically coaxial with the center hole of the workbench, and place the shaft sleeve in the inner hole of the gear-beating base; S2. Install the positioning pins in the blind holes at both ends of the gear-beating base, with the lower ends close together, install the lower gear disc on the gear-beating base, and install the positioning pins in the through holes at both ends for positioning; S3. Install the inner sand ring and the outer sand ring on the inner and outer rings of the lower gear disc respectively, and evenly apply vaseline on the bottom of the inner and outer sand rings to place the grinding sand. Evenly add it to the inner and outer sand retaining rings; S4. Fix the upper gear disc and the transition plate with screws, and ensure that the upper gear disc and the transition plate are coaxial; S5. Insert the grinding mandrel along the center of the lower gear disc, install the lower end into the shaft sleeve, and press against the gear-beating machine and the lifting shaft; S6. Install the upper gear disc and the transition plate above the grinding mandrel, with the grinding mandrel pressed against the upper gear disc, and make the upper gear disc mesh with the lower gear disc; S7. Install the ratchet, ensure that the ratchet is coaxial with the transition plate, and adjust the fork assembly so that the gear-beating machine can drive the gear discs to grind each other up and down, and can be dislocated intermittently.

Images