Bearing block structure for an encoder

Abstract

The utility model belongs to encoder installation component technical field, concretely relates to a bearing seat structure of encoder, including bearing seat body, bearing assembly, positioning hole and installation base, bearing seat body is hollow structure, and its inner chamber is equipped with bearing assembly, positioning hole is located at both ends of bearing seat body, the installation base is located at the bottom of bearing seat body. The utility model is through a pair of face -to -face or back -to -back group's angular contact bearing and constitutes bearing assembly, utilizes the pre -tightening force effectively and eliminates the axial play, makes the axial play and angle measurement error in the rotation process of encoder to be controlled.

Description

Technical Field

[0001] This utility model belongs to the technical field of encoder mounting components, specifically, it relates to a bearing housing structure for an encoder. Background Technology

[0002] As a precision measuring element, the stability and accuracy of the encoder's mounting structure directly determine the reliability of the measurement data. Existing encoder bearing housings have the following technical defects in practical applications: Inappropriate bearing configuration: Deep groove ball bearings are often used. This type of bearing has inherent axial clearance, which causes axial movement during encoder rotation, resulting in angle measurement errors. Especially in high-precision testing scenarios, the error can accumulate to more than 0.1°. Insufficient positioning accuracy: The positioning holes at both ends of the bearing housing used to mate with the encoder shaft are mostly machined separately, lacking a unified benchmark, resulting in a large coaxiality error at both ends of the holes (usually exceeding 0.01mm). After assembly, the encoder shaft is misaligned with the axis of the bearing housing, further amplifying the measurement deviation. Poor ease of operation: The bearing housing body has no dedicated disassembly and assembly structure. It is easy to damage the parts by relying on external force to move or prying with tools. Moreover, the operation efficiency is low when frequently changing encoders or maintaining equipment. Redundant structural design: The whole structure adopts a solid structure, which has low material utilization. This not only increases manufacturing costs, but also causes uneven stress on the mounting base due to excessive weight. Long-term use is prone to micro-deformation, which affects the stability of the reference. Inaccurate installation reference: The bottom mounting surface is not machined with sufficient precision, and the flatness is usually greater than 0.01mm. There is a gap when it fits with the mounting platform, and it is prone to additional displacement due to vibration, which will damage the measurement reference. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a bearing housing structure for an encoder.

[0004] According to the present invention, an encoder bearing housing structure includes a bearing housing body, a bearing assembly, a positioning hole, and a mounting base. The bearing housing body is a hollow structure, and the bearing assembly is provided in its inner cavity. The operating part is symmetrically arranged on the outer side of the middle part of the bearing housing body. The mounting base is located at the bottom of the bearing housing body.

[0005] In a preferred embodiment, the bearing housing body is made of metal.

[0006] In a preferred embodiment: the bearing assembly consists of a pair of angular contact bearings, which are assembled face-to-face or back-to-back.

[0007] In a preferred embodiment: the positioning hole is formed by a contour machining process to ensure that the coaxiality accuracy with the mating component is ≤0.01mm.

[0008] In a preferred embodiment: the positioning holes are located at both ends of the bearing housing body; the operating part is a C-shaped handle, which is fixedly connected to the bearing housing body by bolts, and the outer surface of the handle is provided with anti-slip texture.

[0009] In a preferred embodiment: an encoder is provided inside the positioning hole.

[0010] In a preferred embodiment: the connection end between the bearing housing body and the encoder is provided with a shaft hole mating structure, and the positioning hole and the encoder shaft are tightly fitted without loosening.

[0011] In a preferred embodiment, several hollow holes are formed in the side wall of the bearing housing body.

[0012] In a preferred embodiment: the mounting base has a symmetrical plate structure, the lower surface of the mounting base is the mounting reference surface, the flatness of the mounting reference surface is ≤0.005mm, and the mounting base is in contact with the marble platform.

[0013] In a preferred embodiment: the mounting base has mounting holes, which are connected to the marble platform by fixing bolts.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model uses a pair of face-to-face or back-to-back angular contact bearings to form a bearing assembly. The preload force effectively eliminates axial backlash, thereby controlling the axial movement and angle measurement error during encoder rotation.

[0015] 2. The positioning holes of this utility model adopt the same height machining process, and the holes at both ends are machined synchronously with the same tooling datum to ensure that the coaxiality of the positioning holes at both ends is ≤0.01mm, so that the encoder shaft and the bearing seat form a high-precision rigid connection and the eccentricity error is reduced.

[0016] 3. The C-shaped handle of this utility model forms the operating part, and with the anti-slip texture design, the disassembly and assembly process does not require special tools, and can be completed by a single person.

[0017] 4. The hollow holes in this utility model reduce material usage and manufacturing costs while ensuring structural strength, and also reduce overall weight, thus avoiding deformation of the mounting base due to excessive weight.

[0018] 5. In this utility model, the flatness of the reference surface of the mounting base is controlled within 0.005mm, which fits tightly with the marble platform. Combined with the rigid fixation of the mounting holes, the overall verticality error of the bearing seat is ≤0.005mm, effectively resisting vibration interference and ensuring the long-term stability of the measurement reference. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the positioning hole of this utility model; Figure 3 This is a cross-sectional view of the present invention.

[0020] The following are the labeling elements in the figure: Detailed Implementation

[0021] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0022] like Figure 1-3As shown, this utility model discloses a bearing housing structure for an encoder, including a bearing housing body 1. The bearing housing body 1 is made of metal to ensure structural stability during long-term use. The bearing housing body 1 has an inner cavity with an angular contact bearing assembly 8, which consists of a pair of angular contact bearings. The angular contact bearings are assembled face-to-face or back-to-back. The bearing assembly 8 eliminates axial backlash through preload, improving rotational accuracy. Positioning holes 5 are provided at both ends of the bearing housing body 1. The positioning holes are formed using a contour machining process to ensure coaxiality with mating components ≤0.01mm. An encoder 2 is installed within the positioning holes 5. The connection end between the bearing housing body 1 and the encoder 2 has a shaft-hole mating structure, allowing the positioning holes 5 to fit tightly with the encoder shaft. There is no looseness. The outer side of the middle part of the bearing housing body 1 is provided with a symmetrical operating part 3. The operating part 3 is a C-shaped handle. The handle is fixed to the bearing housing body 1 by bolts. The outer surface of the handle is provided with anti-slip texture for easy disassembly and assembly. Several hollow holes 6 are opened on the bearing housing body 1. The hollow holes 6 are used to reduce the amount of material used, reduce the overall weight, and reduce costs. The bottom of the bearing housing body 1 is provided with a symmetrical mounting base 4. The mounting base 4 is a symmetrical plate structure. The mounting base 4 fits against the marble platform. The lower surface of the mounting base 4 is the mounting reference surface. The flatness of the mounting reference surface is ≤0.005mm. The mounting base 4 is provided with mounting holes 7. The mounting holes 7 are connected to the marble platform by fixing bolts to achieve rigid fixation of the bearing housing.

[0023] Working principle When using this utility model, the encoder 2 is fixed to the marble platform by the mounting base 4, and the shaft of the encoder 2 is inserted into the positioning holes 5 at both ends of the bearing housing body 1. During the test, the angular contact bearing of the bearing assembly 8 ensures that the encoder 2 rotates synchronously with the reducer without backlash, and ensures that the shaft of the encoder 2 does not run out. The high-precision coaxiality of the positioning holes 5 avoids eccentricity error. The handle of the operating part 3 makes it easy to quickly disassemble and install the bearing housing when changing different models of reducers. The weight reduction of the hollow hole 6 makes the force on the marble platform more uniform, and improves the accuracy and repeatability of the test data as a whole.

[0024] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "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.

[0025] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A bearing housing structure for an encoder, characterized in that, The bearing housing includes a bearing housing body (1), a bearing assembly (8), a positioning hole (5), and a mounting base (4). The bearing housing body (1) is a hollow structure, and the bearing assembly (8) is provided in its inner cavity. The positioning hole (5) is located at both ends of the bearing housing body (1). The mounting base (4) is located at the bottom of the bearing housing body (1).

2. The encoder bearing housing structure according to claim 1, characterized in that, The bearing housing body (1) is made of metal.

3. The encoder bearing housing structure according to claim 1, characterized in that, The bearing assembly (8) consists of a pair of angular contact bearings, which are assembled face-to-face or back-to-back.

4. The encoder bearing housing structure according to claim 1, characterized in that, The positioning hole (5) is formed by equal height machining process to ensure that the coaxial accuracy with the mating part is ≤0.01mm.

5. The encoder bearing housing structure according to claim 1, characterized in that, The operating part (3) is symmetrically arranged on the outer side of the middle part of the bearing seat body (1); the operating part (3) is a C-shaped handle, and the handle is fixedly connected to the bearing seat body (1) by bolts, and the outer surface of the handle is provided with anti-slip texture.

6. The encoder bearing housing structure according to claim 4, characterized in that, An encoder (2) is installed inside the positioning hole (5).

7. The encoder bearing housing structure according to claim 6, characterized in that, The connection end of the bearing housing body (1) and the encoder (2) is provided with a shaft hole fitting structure, and the positioning hole (5) is tightly fitted with the encoder shaft without loosening.

8. The encoder bearing housing structure according to claim 1, characterized in that, The bearing housing body (1) has several hollow holes (6) on its side wall.

9. The encoder bearing housing structure according to claim 1, characterized in that, The mounting base (4) has a symmetrical plate structure. The lower surface of the mounting base (4) is the mounting reference surface. The flatness of the mounting reference surface is ≤0.005mm. The mounting base (4) is in contact with the marble platform.

10. The encoder bearing housing structure according to claim 9, characterized in that, The mounting base (4) has mounting holes (7), which are connected to the marble platform by fixing bolts.

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