A rotor positioning and locking structure with accurate corner

Abstract

The utility model discloses a rotor positioning and locking structure with accurate rotation angle. The rotor positioning and locking structure comprises: a shell, a bearing, a rotating shaft, a rotating disc, a fixed disc fixedly connected with the shell or integrated on the shell, a locking disc, a driving system and a position feedback element; the rotating disc is sleeved with the rotating shaft, the rotating shaft is rotatably arranged in the shell through the bearing, and the outer side end face of the rotating disc is flush with that of the fixed disc; the locking disc can move along the axial direction of the rotating shaft; when the rotating shaft needs to be accurately positioned, the driving system and the position feedback element cooperate to drive the rotating shaft and the rotating disc to move to any preset position; then the locking disc is moved, when the end face of the locking disc contacts with the end face of the rotating disc and the fixed disc, the locking disc locks the rotating disc in the circumferential direction through the friction force between the opposite end faces of the rotating disc and the fixed disc, and the angular position of the rotating shaft is fixed; when the locking disc is separated from the rotating disc and the fixed disc, the rotating disc and the rotating shaft can rotate freely. The utility model has the effects of automatically and accurately positioning the rotating disc and simple and convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of rotor positioning and locking, and in particular to a rotor positioning and locking structure with precise rotation angle. Background Technology

[0002] Precise rotor positioning is a crucial aspect of mechanical structures. Due to gaps between components, rotors may exhibit angular deviations during operation. The problem is that such deviations are unacceptable in precision machining, as they can easily introduce machining system errors and reduce machining accuracy. Therefore, precise rotor angular positioning is necessary. Currently, manual zeroing is used during mechanical maintenance. However, this method has drawbacks: the rotor adjustment process is complex, time-consuming, and requires maintenance personnel with specialized skills. Utility Model Content

[0003] To address one or more of the aforementioned problems, this invention provides a rotor positioning and locking structure with precise rotation angle.

[0004] According to one aspect of the present invention, a rotor positioning and locking structure with precise rotation angle includes: a housing, a bearing, a rotating shaft, a turntable, a fixed disc fixedly connected to or integrated into the housing, a locking disc capable of axial movement, a drive system, and a position feedback element.

[0005] The turntable is fixedly sleeved onto the rotating shaft, which is rotatably mounted inside the housing via bearings. The outer end face of the turntable is flush with and coplanar with the outer end face of the fixed disc.

[0006] The locking disc can move axially along the rotating shaft. In the initial state, the end face of the locking disc is set with a small axial clearance relative to the end faces of the rotating disc and the fixed disc.

[0007] When the rotating shaft requires precise angular positioning, the drive system and position feedback element work together to drive the rotating shaft and turntable to move together to any preset position; then the locking plate is moved, and when the end face of the locking plate contacts the end faces of the turntable and the fixed plate, the locking plate locks the turntable circumferentially through the friction between the opposite end faces of the turntable and the fixed plate, and the angular position of the rotating shaft is fixed accordingly; when the end face of the locking plate disengages from the end faces of the turntable and the fixed plate, the turntable and the rotating shaft fixedly connected to the turntable can rotate freely.

[0008] In some implementations, the turntable is fixed to the shaft by a locking mechanism, and the axial position of the turntable can be finely adjusted in the unlocked state.

[0009] In some embodiments, the fixed disk is fixed to the housing by a fastening mechanism, and in the unfastened state, the axial position of the fixed disk relative to the housing can be finely adjusted.

[0010] In some embodiments, the end faces of the turntable and the fixed plate opposite to the locking plate are provided with a layer of material to increase friction.

[0011] In some embodiments, the end faces of the locking disc, the turntable, and the fixed disc opposite each other are provided with a layer of material to increase friction.

[0012] In some embodiments, the material that increases friction is any one of silicon carbide, tungsten carbide, chromium carbide, and titanium carbide, which are wear-resistant materials.

[0013] In some embodiments, the end faces of the turntable and the fixed plate opposite to the locking plate are both configured with a concave-convex structure that can increase friction.

[0014] In some embodiments, the end faces of the locking disc, the turntable, and the fixed disc opposite each other are configured with a concave-convex structure that can increase friction.

[0015] In some embodiments, the concave-convex structure is a Z-shaped sawtooth structure; when the end face of the locking disc contacts the end faces of the turntable and the fixed disc, the Z-shaped sawtooth structure on the locking disc meshes with the Z-shaped sawtooth structure on the end faces of the turntable and the fixed disc.

[0016] In some implementations, in the initial state, the end face of the locking disc has an axial clearance of 1-3 mm with the opposite end faces of the turntable and the fixed disc.

[0017] The advantages of this rotor positioning and locking structure with precise rotation angle are: firstly, by precisely positioning the angle of the turntable through the locking disc, the rotation angle of the turntable can be precisely controlled, eliminating systematic errors in processing and ensuring good processing accuracy; secondly, the device realizes automated locking and positioning of the rotor, which is simple and convenient to operate, greatly reducing the professional requirements for maintenance personnel and shortening maintenance time. Attached Figure Description

[0018] Figure 1 This is a cross-sectional schematic diagram of a rotor positioning and locking structure with precise rotation angle according to one embodiment of the present invention;

[0019] 1. Outer shell, 2. Bearing, 3. Shaft, 4. Turntable, 5. Fixed plate, 6. Locking plate, 7. Cylinder shell, 8. Piston. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, while the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0021] Figure 1The diagram schematically illustrates a rotor positioning and locking structure with precise rotation angle according to one embodiment of the present invention. As shown, the rotor positioning and locking structure with precise rotation angle includes: a housing 1, a bearing 2, a rotating shaft 3, a turntable 4, a fixing disc 5 fixedly connected to or integrated into the housing 1, a locking disc 6 capable of axial movement, a drive system, and a position feedback element;

[0022] Turntable 4 is fixedly sleeved onto rotating shaft 3. Furthermore, turntable 4 is fixed to rotating shaft 3 by a locking mechanism, and in the unlocked state, the axial position of turntable 4 can be finely adjusted. Its locking structure can be an axial key connection structure, specifically: the first keyway on the shaft hole of turntable 4 and the second keyway on the outer peripheral wall of rotating shaft 3 are connected by an axial key with a small axial clearance. Then, the right end shoulder of turntable 4 and rotating shaft 3 are locked by a radial pin. When the radial pin is locked, the position of turntable 4 is fixed. When it is not locked, turntable 4 can be finely adjusted axially by a small size.

[0023] The rotating shaft 3 is rotatably mounted inside the housing 1 via the bearing 2. Preferably, the bearing 2 consists of two bearing discs arranged side by side.

[0024] The outer end face of the turntable 4 is flush with and coplanar with the outer end face of the fixed plate 5. Furthermore, the fixed plate 5 is fixed to the outer shell 1 by a fastening mechanism, and in the non-fastened state, the axial position of the fixed plate 5 relative to the outer shell 1 can be finely adjusted. The fastening mechanism consists of several threaded pairs. The fixed plate 5 is provided with multiple first axial through holes in a circumferential array, and the outer shell 1 is provided with multiple threaded blind holes in a circumferential array on its side wall. The first threaded component is screwed into the threaded blind hole through the first axial through hole to achieve a fastening connection. The outer shell 1 and the fixed plate 5 are finely adjusted axially by adding fine-tuning shims of different sizes or other structures to achieve precise coplanar setting of the turntable 4 and the fixed plate 5.

[0025] The locking disc 6 is axially movable along the rotating shaft 3. Initially, a small axial gap is provided between the locking disc 6 and the outer end faces of the rotating disc 4 and the fixed disc 5, with the axial relative distance preferably being 1-3 mm, more preferably 2 mm. Further, the outer side of the outer casing 1 is fixedly connected to the cylinder shell 7, and the inner cavity of the cylinder shell 7 is axially slidably connected to the piston 8. The right end of the locking disc 6 is fitted or fixedly connected to the piston 8. The locking disc 6 and the piston 8 are sleeved by the rotating shaft 3 with a large gap. When the piston 8 is axially pushed by an external force, the locking disc 6 moves axially along the rotating shaft 3, approaching or moving away from the rotating disc 4 and the fixed disc 5.

[0026] When the rotating shaft 3 needs precise angular positioning, the drive system and position feedback element work together to drive the rotating shaft 3 and the turntable 4 to move together to any preset position; then the locking plate 6 is moved, and when the end face of the locking plate 6 contacts the end faces of the turntable 4 and the fixed plate 5, the locking plate 6 locks the turntable 4 circumferentially through the friction between the opposite end faces of the turntable 4 and the fixed plate 5, and the angular position of the rotating shaft is fixed accordingly, thus achieving precise angular positioning; when the end face of the locking plate 6 disengages from the end faces of the turntable 4 and the fixed plate 5, the turntable 4 and the rotating shaft 2 fixedly connected to the turntable 4 can rotate freely.

[0027] The advantages of this rotor positioning and locking structure with precise rotation angle are as follows: First, by precisely positioning the angle of the turntable 4 through the locking disc 6, the rotation angle of the turntable 4 can be precisely controlled, eliminating systematic errors in the machining process and ensuring good machining accuracy; Second, the device realizes automated locking and positioning of the rotor, which is simple and convenient to operate, greatly reducing the professional requirements for maintenance personnel and shortening maintenance time.

[0028] Furthermore, the end faces of the turntable 4 and the fixed plate 5 opposite to the locking plate 6 are all provided with a layer of material to increase friction. Preferably, the end faces of the locking plate 6 opposite to the turntable 4 and the fixed plate 5 are provided with a layer of material to increase friction. The material to increase friction is preferably a wear-resistant material such as silicon carbide, tungsten carbide, chromium carbide, or titanium carbide. The beneficial effect is that this arrangement can obtain greater relative friction, locking the turntable 4 circumferentially, thereby obtaining a precise angular position of the rotating shaft 3.

[0029] Furthermore, the end faces of the turntable 4 and the fixed plate 5 opposite to the locking plate 6 are all configured with a concave-convex structure to increase friction; preferably, the end face of the locking plate 6 opposite to the turntable 4 and the fixed plate 5 is configured with a concave-convex structure to increase friction. The concave-convex structure is preferably a Z-shaped sawtooth structure. When the end face of the locking plate 6 contacts the end faces of the turntable 4 and the fixed plate 5, the Z-shaped sawtooth structure on the locking plate 6 meshes with the Z-shaped sawtooth structures on the end faces of the turntable 4 and the fixed plate 5. The beneficial effect is that this concave-convex structure can increase relative friction, locking the turntable 4 circumferentially, thereby obtaining a precise angular position of the rotating shaft 3.

[0030] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A rotor positioning and locking structure with precise rotation angle, characterized in that, Includes: housing (1), bearing (2), shaft (3), turntable (4), fixed plate (5) fixedly connected to or integrated on housing (1), locking plate (6) capable of axial movement, drive system and position feedback element; The turntable (4) is fixedly sleeved on the rotating shaft (3), and the rotating shaft (3) is rotatably disposed in the outer shell (1) through the bearing (2). The outer end face of the turntable (4) is flush with the outer end face of the fixed disk (5). The locking disc (6) can move axially along the rotating shaft (3). In the initial state, the end face of the locking disc (6) is set with a small axial gap with the opposite end faces of the rotating disc (4) and the fixed disc (5). When the rotating shaft (3) needs precise angular positioning, the drive system and position feedback element cooperate to drive the rotating shaft (3) and the turntable (4) to move together to any preset position; then the locking plate (6) is moved. When the end face of the locking plate (6) contacts the end face of the turntable (4) and the fixed plate (5), the locking plate (6) locks the turntable (4) circumferentially through the friction between the opposite end faces of the turntable (4) and the fixed plate (5), and the angular position of the rotating shaft is fixed accordingly; when the end face of the locking plate (6) disengages from the end face of the turntable (4) and the fixed plate (5), the turntable (4) and the rotating shaft (3) fixedly connected to the turntable (4) can rotate freely.

2. The rotor positioning and locking structure with precise rotation angle according to claim 1, characterized in that, The turntable (4) is fixed to the rotating shaft (3) by a locking mechanism, and the axial position of the turntable (4) can be finely adjusted in the unlocked state.

3. The rotor positioning and locking structure with precise rotation angle according to claim 1, characterized in that, The fixed plate (5) is fixed to the outer shell (1) by a fastening mechanism, and in the unfastened state, the axial position of the fixed plate (5) relative to the outer shell (1) can be finely adjusted.

4. The rotor positioning and locking structure with precise rotation angle according to any one of claims 1-3, characterized in that, The end faces of the turntable (4) and the fixed plate (5) opposite to the locking plate (6) are all provided with a layer of material to increase friction.

5. The rotor positioning and locking structure with precise rotation angle according to claim 4, characterized in that, The locking disc (6) has a layer of friction-increasing material on the end face opposite to the turntable (4) and the fixed disc (5).

6. The rotor positioning and locking structure with precise rotation angle according to claim 4 or 5, characterized in that, The material that increases friction is any one of silicon carbide, tungsten carbide, chromium carbide, and titanium carbide, which are wear-resistant materials.

7. The rotor positioning and locking structure with precise rotation angle according to any one of claims 1-3, characterized in that, The end faces of the turntable (4) and the fixed plate (5) opposite to the locking plate (6) are all configured with a concave-convex structure that can increase friction.

8. The rotor positioning and locking structure with precise rotation angle according to claim 7, characterized in that, The end face of the locking disc (6) opposite to the turntable (4) and the fixed disc (5) is configured with a concave-convex structure that can increase friction.

9. The rotor positioning and locking structure with precise rotation angle according to claim 1, characterized in that, In the initial state, the end face of the locking disc (6) and the opposite end faces of the turntable (4) and the fixed disc (5) have an axial gap of 1-3 mm.

Images