Formed bearing bush with concentricity control structure

Abstract

The utility model discloses a kind of forming main bearing bush with concentricity control structure, comprising: bearing bush body, further comprising: the positioning cone surface on the outer wall of bearing bush body, the outer wall of bearing bush body is opened with arc structure's radiating groove, and bearing bush body inner wall is inserted and is installed with inner liner, the inner wall of the inner liner is fixed with elastic compensation, the inner wall of the elastic compensation band is opened with multiple equidistant distribution's arc oil groove, the inner wall of bearing bush body is opened with multiple equidistant distribution's ring insertion slot.The utility model of a kind of forming main bearing bush with concentricity control structure, with convenient initial concentric positioning ability, easy to calibrate coaxial degree when installation, subsequent deviation can be fine adjusted.The vibration of main shaft and load offset can be offset during operation, reduce friction loss, and the concentricity is stably maintained.The structure connection is stable, the inner liner can be prevented from displacement, and the heat dissipation effect is good, avoid the influence precision of thermal deformation, overall improve equipment operation reliability and service life.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically a molded main bearing with a concentricity control structure. Background Technology

[0002] In mechanical transmission systems, molded spindle bushings, as key components supporting spindle operation, are widely used in various power equipment and precision machinery. However, with the continuous expansion of applications for high-precision and high-stability equipment, there is still room for optimization in the functional integration and precision control of existing molded spindle bushings: Firstly, during installation, the concentricity calibration between the spindle, bushing, and base often relies on external tooling, making the operation process relatively cumbersome and difficult to achieve accurate alignment quickly, thus affecting equipment assembly efficiency; secondly, during operation, the spindle is susceptible to slight misalignment due to vibration, load fluctuations, and temperature changes. Existing bushings have limited dynamic concentricity compensation capabilities, and their precision is prone to decay after long-term operation, requiring frequent shutdowns for adjustment to restore performance. Utility Model Content

[0003] The purpose of this invention is to provide a molded main shaft bearing with a concentricity control structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a molded main bearing with a concentricity control structure, comprising: a bearing body, and further comprising: a positioning cone surface disposed on the outer wall of the bearing body, wherein arc-shaped heat dissipation grooves are opened on both outer walls of the bearing body, and an inner liner is inserted and installed on the inner wall of the bearing body, wherein an elastic compensation band is fixed on the inner wall of the inner liner.

[0005] The inner wall of the elastic compensation band has multiple equally spaced arc-shaped oil grooves.

[0006] The inner wall of the bearing body has multiple equally spaced ring slots, and the outer wall of the inner liner has multiple equally spaced ring inserts.

[0007] Both the ring slot and the ring insert have trapezoidal cross-sections.

[0008] The bearing body has two adjusting screw holes on its top.

[0009] Both of the aforementioned heat dissipation slots have multiple equidistantly distributed heat dissipation fins installed on their inner walls.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention relates to a molded spindle bearing with a concentricity control structure, which provides convenient initial concentricity positioning, easy coaxiality calibration during installation, and subsequent fine-tuning of deviations. During operation, it can counteract spindle vibration and load offset, reduce frictional loss, and stably maintain concentricity. The structural connection is robust, preventing displacement of the inner liner, and offers good heat dissipation, avoiding thermal deformation that could affect accuracy, thus improving overall equipment reliability and service life. Attached Figure Description

[0011] Figure 1 This is a top view of the structure of this utility model; Figure 2 This is a bottom view of the structure of this utility model; Figure 3 This is a structural diagram of the bearing body of this utility model; Figure 4 This is a structural diagram of the inner lining layer of this utility model.

[0012] In the diagram: 1. Bearing body; 2. Positioning cone surface; 3. Heat dissipation groove; 4. Inner liner; 5. Elastic compensation band; 6. Adjustment screw hole; 7. Heat sink; 8. Arc-shaped oil groove; 9. Ring slot; 10. Ring insert block. Detailed Implementation

[0013] 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.

[0014] Please see Figure 1-4 The present invention provides a molded main bearing with a concentricity control structure, comprising: a bearing body 1, and further comprising: a positioning cone surface 2 provided on the outer wall of the bearing body 1, and arc-shaped heat dissipation grooves 3 on both sides of the outer wall of the bearing body 1, and an inner lining layer 4 inserted into the inner wall of the bearing body 1, and an elastic compensation band 5 fixed on the inner wall of the inner lining layer 4.

[0015] It should be noted that: the bearing body 1 fits tightly with the matching conical hole in the base through the positioning conical surface 2 on the outer wall, and the initial concentric positioning during installation is achieved by utilizing the guiding characteristics of the conical surface, which quickly calibrates the coaxiality of the spindle and the bearing body 1; the arc-shaped heat dissipation grooves 3 on both sides of the bearing body 1 can dissipate the frictional heat and ambient heat generated during operation, and reduce the interference of thermal deformation on concentricity; the inner liner 4 is fixed to the inner wall of the bearing body 1 by plugging, providing a stable mounting carrier for the elastic compensation belt 5; the elastic compensation belt 5 relies on its own elastic deformation to offset the small radial displacement caused by spindle vibration and load fluctuation, maintain the fit between the spindle and the bearing body 1, and ensure the stability of concentricity throughout the process.

[0016] In a preferred embodiment, the inner wall of the elastic compensation belt 5 has a plurality of equally spaced arc-shaped oil grooves 8.

[0017] It should be noted that the multiple equidistant arc-shaped oil grooves 8 on the inner wall of the elastic compensation belt 5 can store lubricating oil, forming a continuous and stable oil film when the spindle is running. On the one hand, this reduces the direct friction loss between the spindle and the elastic compensation belt 5, and on the other hand, the oil film can buffer the slight shaking of the spindle. Combined with the deformation characteristics of the elastic compensation belt 5, it further weakens the influence of the offset on the concentricity, ensuring that the coaxial state of the spindle and the bearing body 1 is not disrupted.

[0018] In a preferred embodiment, the inner wall of the bearing body 1 has a plurality of equally spaced ring slots 9, and the outer wall of the inner liner 4 is fitted with a plurality of equally spaced ring inserts 10; the cross-sections of the ring slots 9 and the ring inserts 10 are both trapezoidal structures.

[0019] It should be noted that: the ring slot 9 on the inner wall of the bearing body 1 and the ring insert 10 on the outer wall of the inner liner 4 form a concave-convex interlocking fit, which restricts the relative rotation and axial displacement of the inner liner 4 and the bearing body 1 through structural interlocking; it avoids the impact load generated by the operation of the main shaft from causing the inner liner 4 to shift, thereby preventing the concentricity deviation between the main shaft and the bearing body 1 caused by the offset of the inner liner 4, and ensuring the positioning stability of the overall structure; the trapezoidal cross-section design of the ring slot 9 and the ring insert 10 makes the two form a "wedge" effect after they are inserted. The trapezoidal structure can effectively resist radial tension and prevent the inner liner 4 from falling off or loosening from the inner wall of the bearing body 1, further strengthening the connection stability between the inner liner 4 and the bearing body 1, and indirectly ensuring the concentricity control function of the positioning cone 2 and the elastic compensation band 5.

[0020] In a preferred embodiment, the bearing body 1 has two adjusting screw holes 6 on its top.

[0021] It should be noted that the two adjusting screw holes 6 on the top of the bearing body 1 can be fitted with adjusting screws. If a concentricity deviation between the main shaft and the bearing body 1 is detected after installation, the radial position of the bearing body 1 can be slightly adjusted by screwing in or out the adjusting screws. This accurately compensates for minor errors during installation, calibrates the coaxiality of the main shaft and the bearing body 1 to the target range, and improves the operating accuracy of the equipment.

[0022] In a preferred embodiment, the inner walls of both heat dissipation slots 3 are equipped with a plurality of equally spaced heat dissipation fins 7.

[0023] It should be noted that the multiple equidistant heat sinks 7 on the inner wall of the heat sink 3 greatly increase the heat dissipation area and accelerate the heat conduction efficiency.

[0024] Working principle: The bearing body 1 is fitted with the matching conical hole in the base through the positioning conical surface 2 on the outer wall. The initial concentric positioning is quickly completed with the guiding characteristics of the conical surface, ensuring that the main shaft and the bearing body 1 are initially coaxial. At the same time, the ring insert 10 on the outer wall of the inner liner 4 is inserted into the ring slot 9 on the inner wall of the bearing body 1. The trapezoidal cross sections of the two form a "wedge" fit, which restricts the relative displacement between the inner liner 4 and the bearing body 1, laying a stable foundation for subsequent concentricity control.

[0025] When the spindle is running, the elastic compensation band 5 on the inner wall of the inner liner 4 offsets the slight radial displacement caused by spindle vibration and load fluctuation through its own elastic deformation, ensuring the fit between the spindle and the bearing body 1; the arc-shaped oil groove 8 on the inner wall of the elastic compensation band 5 stores lubricating oil and forms a continuous and stable oil film, which not only reduces the frictional loss between the spindle and the elastic compensation band 5, but also buffers the slight shaking of the spindle, further enhancing the concentricity stability.

[0026] The frictional heat generated by the bearing is dissipated through the heat dissipation grooves 3 on both sides. The heat dissipation fins 7 on the inner wall of the heat dissipation grooves 3 increase the heat dissipation area, accelerate heat conduction, prevent the bearing body 1 from thermally deforming due to high temperature, prevent the positioning cone surface 2 from decreasing the fitting accuracy and the elastic compensation belt 5 from being unevenly stressed, and indirectly maintain the concentricity control effect.

[0027] If a concentricity deviation is detected between the spindle and the bearing body 1 after installation, the adjusting screw 6 on the top of the bearing body 1 can be used to adjust the adjusting screw. By screwing the adjusting screw in or out, a small radial adjustment can be made to the bearing body 1 to accurately compensate for the error and ensure that the spindle and the bearing body 1 always maintain a high-precision coaxial state.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A molded main bearing bush with a concentricity control structure, comprising: Bearing body (1); The feature is that it further includes: a positioning cone surface (2) provided on the outer wall of the bearing body (1), and arc-shaped heat dissipation grooves (3) opened on both sides of the outer wall of the bearing body (1), and an inner liner (4) inserted into the inner wall of the bearing body (1), and an elastic compensation band (5) fixed on the inner wall of the inner liner (4).

2. A molded spindle bearing with a concentricity control structure according to claim 1, characterized in that: The inner wall of the elastic compensation band (5) has multiple equally spaced arc-shaped oil grooves (8).

3. The shaped bearing bushing with concentricity control structure of claim 1, wherein: The inner wall of the bearing body (1) has multiple equally spaced ring slots (9), and the outer wall of the inner liner (4) has multiple equally spaced ring inserts (10).

4. The shaped bearing bushing with concentricity control structure according to claim 3, characterized in that: Both the ring slot (9) and the ring insert (10) have trapezoidal cross-sections.

5. The shaped bearing bushing with concentricity control structure of claim 1, wherein: The bearing body (1) has two adjusting screw holes (6) on its top.

6. The shaped bearing bushing with concentricity control structure of claim 1, wherein: The inner walls of both heat sinks (3) are equipped with multiple equidistant heat sinks (7).

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