A circumferential gapless locking mechanism that eliminates axial forces

Abstract

The utility model discloses a kind of eliminate axial force circumferential gapless locking mechanism, including spiral angle vertical slide, rear support seat, brake disc, elastic connecting plate, brake hub, two gap-eliminating key assemblies, rotating shaft and power component;Brake hub is sleeved on rotating shaft, elastic connecting plate is sleeved on the outside of brake hub, its inside is fixed with the outside of brake hub, brake disc is sleeved on the outside of elastic connecting plate, its inside is fixed on the outside of elastic connecting plate, the utility model is adjusted the interval of two parts of rotating shaft and brake hub by gap-eliminating key assembly, eliminate the gap between rotating shaft and brake hub, so that it can resist both sides in keyway, not let rotating shaft and brake hub occur relative activity, brake hub and brake disc are connected by elastic connecting plate, axial force generated to main shaft when braking can be effectively reduced, avoid the influence of axial force to gear when grinding, improve gear grinding machining precision.

Description

Technical Field

[0001] This utility model relates to the field of CNC forming grinding wheel gear grinding machine technology, and in particular to a circumferential gapless locking mechanism for eliminating axial force. Background Technology

[0002] The helix angle component of a grinding wheel gear grinding machine is the "steering wheel" and "navigation system" for grinding the helical tooth grooves of gears. It has the functions of resisting grinding forces, maintaining positioning accuracy, eliminating vibration and chatter, and extending the machine tool life. As the requirements for gear grinding accuracy become higher and higher, the existing gear grinding accuracy is increasingly unable to meet the needs of users.

[0003] To address the shortcomings of existing technologies, it is necessary to design a circumferential backlash-free locking mechanism that eliminates axial forces. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a circumferential gapless locking mechanism that eliminates axial force.

[0005] A circumferential backlash-free locking mechanism for eliminating axial force includes a helical angle vertical slide body, a rear support seat, a brake disc, an elastic connecting plate, a brake hub, two backlash-free key assemblies, a rotating shaft, and a power assembly. The rear support seat is fixed on the helical angle vertical slide body. One end of the rotating shaft is mounted on the helical angle vertical slide body. The brake hub is sleeved on the rotating shaft. The elastic connecting plate is sleeved on the outside of the brake hub, and its inner side is fixed to the outside of the brake hub. The brake disc is sleeved on the outside of the elastic connecting plate, and its inner side is fixed to the outside of the elastic connecting plate. The brake disc and the brake hub are connected through the elastic connecting plate. The power assembly is mounted on the rear support seat. The rotating shaft has symmetrically formed elliptical keyways on both sides, and the brake drum has symmetrically formed rectangular keyways on both sides. The backlash elimination key assembly includes a fixed block and an adjusting wedge. The fixed block includes an elliptical block and an extension block fixed on the elliptical block. The elliptical block is fixed in the elliptical keyway, and the extension block is embedded in the rectangular keyway. A fixing slope is provided on the side of the extension block opposite to the adjusting wedge. The adjusting wedge includes a fixed section and an adjusting section. One side of the adjusting section is perpendicular to the fixed section, and the other side is provided with an adjusting slope. The fixed section is fixed on the extension block, so that the adjusting section is inserted between the elliptical block and the brake drum.

[0006] Furthermore, the rear support base includes an upper annular disc and an annular support base. The annular support base is provided with several arc-shaped connecting blocks. The upper annular disc is fixed on the arc-shaped connecting blocks, and the annular support base is fixed on the helical angle vertical slide body. The rotation shaft passes through the annular support base and the upper annular disc.

[0007] Furthermore, the power assembly is provided in several parts, including a piston rod, a cylinder body, a disc spring, and a pressure cap; the cylinder body is fixed on the upper annular disc, the piston rod is installed inside the cylinder body, and its rod end extends through the cylinder body to the outside of the cylinder body; the disc spring is disposed inside the cylinder body and sleeved on the piston rod; the pressure cap is fixed on the top of the cylinder body to press down the disc spring.

[0008] Furthermore, the elliptical keyway and the rectangular keyway are positioned correspondingly, and the extension block is a right-angled frustum shape with a rounded corner on the bottom side near the right-angled surface.

[0009] Furthermore, the tilt angle between the adjusting slope and the fixed section is in the range of 92°~98°, and the tilt angle of the fixed slope is adapted to the adjusting slope.

[0010] Furthermore, the annular support chassis is provided with a plurality of composite friction plates, and the brake disc is disposed between the rod end of the piston rod and the composite friction plates, with a gap provided between the brake disc and the composite friction plates.

[0011] Furthermore, the composite friction plate is arc-shaped, and the composite friction plate and the power component are evenly distributed around the rotation axis.

[0012] Furthermore, a motor is mounted on the other end of the rotating shaft. Beneficial effects

[0013] This invention adjusts the distance between the rotating shaft and the brake drum by using a gap-eliminating key assembly, thereby eliminating the gap between them and allowing them to abut against both sides within the keyway, preventing relative movement between the rotating shaft and the brake drum.

[0014] This invention can effectively brake and lock the helical angle component. By connecting the brake hub and brake disc with an elastic connecting plate, it can effectively reduce the axial force generated on the spindle during braking, avoid the influence of axial force on the gear during grinding, and improve the grinding accuracy. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the circumferential gapless locking mechanism of this utility model; Figure 2 This is a three-dimensional structural diagram of the present invention with the upper annular disk and power component removed; Figure 3 This is an exploded view of the present invention; Figure 4 This is a three-dimensional structural diagram of the gap-eliminating key assembly of this utility model; In the picture: 1. Helical angle vertical slide body; 2. Rear support seat; 21. Upper annular disc; 22. Arc-shaped connecting block; 23. Annular support chassis; 3. Composite friction plate; 5. Brake disc; 6. Piston rod; 7. Cylinder body; 9. Pressure cover; 10. Elastic connecting plate; 11. Brake hub; 12. Backlash elimination key assembly; 121. Fixing block; 122. Adjusting wedge; 13. Rotating shaft. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please refer to Figures 1-4This embodiment proposes a circumferential backlash-free locking mechanism to eliminate axial force, including a helical angle vertical slide body 1, a rear support seat 2, a brake disc 5, an elastic connecting plate 10, a brake hub 11, two backlash-free key assemblies 12, a rotating shaft 13, and a power assembly. The rear support seat 2 is fixed on the helical angle vertical slide body 1. One end of the rotating shaft 13 is mounted on the helical angle vertical slide body 1, and the rotating shaft 13 is connected to the helical angle vertical slide body 1 through bearings and other parts. The specific installation method adopts existing technology and will not be elaborated here. The rotating shaft 13 can rotate freely within it, and the other end of the rotating shaft 13 is equipped with an electric motor. The brake hub 11 is mounted on the rotating shaft 13. An elastic connecting plate 10 is mounted on the outside of the brake hub 11, with its inner side fixed to the outside of the brake hub 11. A brake disc 5 is mounted on the outside of the elastic connecting plate 10, with its inner side fixed to the outer side of the elastic connecting plate 10. The elastic connecting plate 10 connects the brake disc 5 and the brake hub 11. The power assembly is mounted on the rear support 2. Elliptical keyways are symmetrically formed on both sides of the rotating shaft 13, and rectangular keyways are symmetrically formed on both sides of the brake hub 11. The elliptical and rectangular keyways are positioned correspondingly. The backlash elimination key assembly 12 includes a fixing block 121 and an adjusting wedge 122. The fixing block 121 includes an elliptical block and an extension block fixed to the elliptical block. The extension block is a right-angled frustum shape with a rounded corner on the bottom side near the right angle. The elliptical block is fixed in an elliptical keyway, and the extension block is embedded in a rectangular keyway. A fixing inclined surface is provided on the side of the extension block opposite to the adjusting wedge 122. The adjusting wedge 122 includes a fixing section and an adjusting section. One side of the adjusting section is perpendicular to the fixing section, and the other side is provided with an adjusting inclined surface. The inclination angle between the adjusting inclined surface and the fixing section is in the range of 92°~98°. The inclination angle of the fixing inclined surface matches the adjusting inclined surface. The fixing section is fixed to the extension block, so that the adjusting wedge 122 can be adjusted to the adjusting wedge 122. The segment is inserted between the elliptical block and the brake hub 11. The gap between the two parts, the rotating shaft 13 and the brake hub 11, is adjusted by the backlash elimination key assembly 12 to eliminate the gap between the rotating shaft 13 and the brake hub 11. This allows the rotating shaft 13 and the brake hub 11 to abut against both sides in the keyway, preventing relative movement between them. Furthermore, this invention can effectively brake and lock the helical angle component. The brake hub 11 and the brake disc 5 are connected by the elastic connecting plate 10, which can effectively reduce the axial force generated on the spindle during braking, avoid the influence of axial force on the gears during grinding, and improve the grinding accuracy.

[0018] The rear support base 2 includes an upper annular disk 21 and an annular support base 23. Several arc-shaped connecting blocks 22 are provided on the annular support base 23. The upper annular disk 21 is fixed on the arc-shaped connecting blocks 22. The annular support base 23 is fixed on the helical angle vertical slide body 1. The rotating shaft 13 passes through the annular support base 23 and the upper annular disk 21 and is connected to the motor. The power assembly comprises several components, including a piston rod 6, a cylinder body 7, a disc spring, and a pressure cap 9. The cylinder body 7 is fixed on an upper annular disc 21. The piston rod 6 is installed inside the cylinder body 7, with its rod end extending through the cylinder body 7 to the outside. The disc spring is located inside the cylinder body 7 and sleeved on the piston rod 6. The pressure cap 9 is fixed to the top of the cylinder body 7, pressing down on the disc spring. Several composite friction plates 3 are arranged on an annular support base 23. A brake disc 5 is located between the rod end of the piston rod 6 and the composite friction plates 3. A gap is provided between the brake disc 5 and the composite friction plates 3, which can be set to a gap of 5 to 10 microns depending on the actual situation. The composite friction plates 3 are arc-shaped and are evenly distributed around the rotation axis 13 along with the power assembly.

[0019] Under normal braking conditions, the piston rod 6 moves under the action of the disc spring, pressing against the brake disc 5. This eliminates the 5 to 10 micrometer gap left during installation between the brake disc 5 and the composite friction pad 3, bringing them into contact and locking the brake disc 5 to prevent the rotating shaft 13 from rotating. Because the brake disc 5 and the brake hub 11 are connected by an elastic connecting plate 10, when the piston rod 6 presses against the brake disc 5, only a small portion of the force exerted by the disc spring on the brake disc 5 is transmitted to the brake hub 11 through the elastic connecting plate 10. Since the brake hub 11 is fitted onto the rotating shaft 13, the rotating shaft 13 is only subjected to a very small axial force.

[0020] When oil is supplied, the hydraulic oil inside the cylinder body 7 will press against the piston rod 6 and push it to the right to counteract the elastic force of the disc spring. The elastic connecting plate 10 will restore its deformation, so that the piston rod 6 and the brake disc 5 will not contact each other, and the rotating shaft 13 can rotate freely.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circumferential backlash-free locking mechanism for eliminating axial force, characterized in that: The system includes a helical angle vertical slide body (1), a rear support seat (2), a brake disc (5), an elastic connecting plate (10), a brake hub (11), two backlash elimination key assemblies (12), a rotating shaft (13), and a power assembly. The rear support seat (2) is fixed on the helical angle vertical slide body (1). One end of the rotating shaft (13) is installed on the helical angle vertical slide body (1). The brake hub (11) is sleeved on the rotating shaft (13). The elastic connecting plate (10) is sleeved on the outside of the brake hub (11), and its inner side is fixed to the outside of the brake hub (11). The brake disc (5) is sleeved on the outside of the elastic connecting plate (10), and its inner side is fixed to the outside of the elastic connecting plate (10). The brake disc (5) and the brake hub (11) are connected through the elastic connecting plate (10). The power assembly is installed on the rear support seat (2). The rotating shaft (13) has symmetrically opened elliptical keyways on both sides, and the brake hub (11) has symmetrically opened rectangular keyways on both sides. The backlash elimination key assembly (12) includes a fixed block (121) and an adjusting wedge (122). The fixed block (121) includes an elliptical block and an extension block fixed on the elliptical block. The elliptical block is fixed in the elliptical keyway, and the extension block is embedded in the rectangular keyway. The extension block and the adjusting wedge (122) are provided with a fixed inclined surface on the opposite side. The adjusting wedge (122) includes a fixed section and an adjusting section. One side of the adjusting section is perpendicular to the fixed section, and the other side is provided with an adjusting inclined surface. The fixed section is fixed on the extension block so that the adjusting section is inserted between the elliptical block and the brake hub (11).

2. The circumferential zero-backlash locking mechanism according to claim 1, characterized in that: The rear support base (2) includes an upper annular disk (21) and an annular support base (23). Several arc-shaped connecting blocks (22) are provided on the annular support base (23). The upper annular disk (21) is fixed on the arc-shaped connecting blocks (22), and the annular support base (23) is fixed on the helical angle vertical slide body (1). The rotating shaft (13) passes through the annular support base (23) and the upper annular disk (21).

3. The circumferential gapless locking mechanism according to claim 2, characterized in that: The power assembly includes several components, including a piston rod (6), a cylinder body (7), a disc spring, and a pressure cap (9). The cylinder body (7) is fixed on the upper annular plate (21). The piston rod (6) is installed inside the cylinder body (7), and its rod end extends through the cylinder body (7) to the outside of the cylinder body (7). The disc spring is set inside the cylinder body (7) and sleeved on the piston rod (6). The pressure cap (9) is fixed on the top of the cylinder body (7) to press the disc spring.

4. The circumferential gapless locking mechanism according to claim 1, characterized in that: The elliptical keyway and the rectangular keyway are positioned opposite each other, and the extension block is a right-angled frustum shape with a rounded corner on the bottom side near the right-angled face.

5. The circumferential gapless locking mechanism according to claim 1, characterized in that: The tilt angle between the adjusting slope and the fixed section is in the range of 92°~98°, and the tilt angle of the fixed slope is adapted to the adjusting slope.

6. The circumferential zero-backlash locking mechanism according to claim 3, characterized in that: The annular support chassis (23) is provided with a number of composite friction plates (3), and the brake disc (5) is located between the rod end of the piston rod (6) and the composite friction plates (3). A gap is provided between the brake disc (5) and the composite friction plates (3).

7. The circumferential backlash-free locking mechanism according to claim 6, characterized in that: The composite friction plate (3) is arc-shaped, and the composite friction plate (3) and the power component are evenly distributed around the rotating shaft (13).

8. The circumferential zero-backlash locking mechanism according to claim 1, characterized in that: A motor is installed at the other end of the rotating shaft (13).

Images