Chucking target straightening device and target straightening method

Abstract

The application discloses a bearing seat targeting and shaping device and a targeting and shaping method. The device comprises a mounting seat assembly, a bottom pressing ring component and an upper pressing and expanding assembly. The bearing seat to be shaped is sleeved on the mounting seat assembly and vertically supported on the mounting seat assembly. The bottom pressing ring component is sleeved on the bearing seat to press and fix the lower flange of the bearing seat on the mounting seat assembly. The upper pressing and expanding assembly is arranged on the upper end of the mounting seat assembly to outwardly expand and fix the upper end inner hole of the bearing seat and then press and fix the top end. When the device is used to clamp and fix the bearing seat, the lower end of the bearing seat is fixed on the mounting seat assembly by the bottom pressing ring component to press and fix the lower flange, the upper end is outwardly expanded and fixed by the upper pressing and expanding assembly to fix the upper end inner hole, and the top end is further pressed and fixed by the upper pressing and expanding assembly, so that the stable support and fixation of the bearing seat are realized, the bearing seat is forced to have the same precision as the device for shaping, and the shaping of the bearing seat can be accurately controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bearing seat shaping, in particular, to a bearing seat targeted shaping device. Furthermore, the present application also relates to a targeted shaping method for bearing seat targeted shaping using the device. BACKGROUND

[0002] As shown in the drawings, the workpiece bearing seat is a key part of a certain device in the aviation field, and its precision directly affects the service life of the workpiece and even the device. Due to the production process of the workpiece, there is uneven residual stress in the workpiece, and the direct factor affecting the precision is the deformation caused by the residual stress existing in the workpiece itself. The precision mainly affected by deformation is shown in the drawings. Figure 1 Figure 1 As shown in the drawings, the upper end hole axis is perpendicular to the lower flange.

[0003] At present, the method for dealing with this problem is to remove stress or homogenize stress as a whole. Since the stress size and distribution of each workpiece are different, the same treatment process is used, which has certain blindness and uncertainty, and the effect of shaping and preventing deformation is poor. SUMMARY

[0004] The present application provides a bearing seat targeted shaping device and a targeted shaping method to solve the technical problem that the current method for dealing with bearing seat stress deformation is to remove stress or homogenize stress as a whole, which has certain blindness and uncertainty, and the effect of shaping and preventing deformation is poor.

[0005] The technical solution adopted by the present application is as follows:

[0006] A bearing seat targeted shaping device, comprising: a mounting seat assembly for mounting and supporting, a bottom pressure ring component, and an upper pressure expansion assembly; the bearing seat to be shaped is sleeved on the mounting seat assembly and vertically supported on the mounting seat assembly; the bottom pressure ring component is sleeved on the bearing seat to press and fix the lower flange of the bearing seat on the mounting seat assembly; the upper pressure expansion assembly is arranged at the upper end of the mounting seat assembly to expand and fix the upper end hole of the bearing seat outward and then press down the top end.

[0007] Further, the mounting seat assembly comprises a mounting bottom plate and a mounting column vertically fixed on the mounting bottom plate; the bearing seat is sleeved on the mounting column and vertically supported on the mounting bottom plate; the bottom pressure ring component presses and fixes the lower flange of the bearing seat on the mounting bottom plate; the upper pressure expansion assembly is connected to the upper end of the mounting column.

[0008] ​Further, the bottom pressing ring component comprises a bottom pressing ring sleeved on the outer circle of the lower end of the bearing seat and a fastener for connection and fixation; the bottom pressing ring is pressed on the lower flange of the bearing seat; the fastener is connected with the mounting base after penetrating the bottom pressing ring and the lower flange, so that the bottom pressing ring tightly fixes the lower flange on the mounting base.

[0009] Further, the upper pressing and expanding assembly comprises an upper outer expanding component and an upper pressing component connected with the upper end of the mounting column respectively; the upper outer expanding component is located in the upper end inner hole of the bearing seat for expanding and fixing the upper end inner hole of the bearing seat from inside to outside; the upper pressing component is located at the upper end of the bearing seat for pressing the top end of the bearing seat.

[0010] Further, the upper outer expanding component comprises a spring expanding sleeve and a conical core sleeved on the outer circle of the mounting column in sequence along the axial direction, and a first locking nut threadedly connected with the outer circle of the mounting column; the conical core is pressed down during the rotation of the first locking nut, so that the lower end of the conical core is extruded into the spring expanding sleeve, and then the spring expanding sleeve is forced to expand outward to outwardly expand and fix the upper end inner hole of the bearing seat.

[0011] Further, the upper end of the mounting column has an outwardly convex annular mounting flange, and the outer circumferential surface of the mounting flange is an outer conical surface with gradually increasing outer diameter from top to bottom; the lower inner conical hole of the spring expanding sleeve is arranged in cooperation with the outer conical surface of the mounting flange, and the spring expanding sleeve is limitedly mounted between the mounting flange and the upper end inner hole of the bearing seat through the cooperation of the lower inner conical hole and the outer conical surface.

[0012] Further, the outer circle of the lower end of the conical core is a reverse conical surface with gradually decreasing outer diameter from top to bottom; the upper inner conical hole of the spring expanding sleeve is arranged in cooperation with the reverse conical surface of the conical core.

[0013] Further, the lower end of the spring expanding sleeve is provided with lower opening slits arranged in a circumferential direction and extending towards the upper end inner recess; the upper end of the spring expanding sleeve is also provided with upper opening slits arranged in a circumferential direction and extending towards the lower end inner recess, and the upper opening slits and the lower opening slits are arranged in sequence in a staggered manner.

[0014] Further, the upper pressing component comprises a pressing cap penetrating the outer circle of the mounting column, and a second locking nut threadedly connected with the outer circle of the mounting column; the pressing cap is pressed down during the rotation of the second locking nut, so that the lower end of the pressing cap presses the top end of the bearing seat.

[0015] According to another aspect of the present application, a bearing chock targeted alignment method is also provided, comprising the following steps: clamping the bearing chock to the bearing chock targeted alignment device; performing non-destructive stress detection on the bearing chock to obtain stress values of each region on the bearing chock; analyzing the obtained stress values corresponding to the respective regions to mark the stress state and stress values; performing targeted impact treatment on the high stress region to reduce the stress value of the region or even change the stress state; and performing non-destructive stress detection on the bearing chock again, and the bearing chock is qualified for alignment completion if the stress state and stress value of each position are consistent.

[0016] The present application has the following beneficial effects:

[0017] When the bearing chock targeted alignment device of the present application is used to clamp and fix the bearing chock, the bearing chock is vertically sleeved outside the mounting seat assembly and supported at the bottom on the mounting seat assembly, the lower end of the bearing chock is fixed on the mounting seat assembly by pressing the lower flange of the bearing chock through the bottom pressing ring member, the upper end of the bearing chock is fixed by outwardly expanding the inner hole of the upper end through the upper pressing and expanding assembly, and the top end is further fixed by pressing downward through the upper pressing and expanding assembly, so that stable support and fixation of the bearing chock can be achieved, the bearing chock is forced to have the same precision as the alignment device, and the alignment of the bearing chock can be accurately controlled to ensure the effect of the later alignment.

[0018] The bearing chock targeted alignment method of the present application realizes clamping and alignment of the bearing chock, measures and evaluates the stress on the workpiece, and then eliminates the stress and further pre-sets the known stress according to the measurement and evaluation results, so that the stress state of the workpiece can be more accurately understood, the stress can be more purposefully targeted, the alignment of the workpiece can be achieved, and the deformation of the workpiece during the service period can be prevented.

[0019] In addition to the objects, features, and advantages described above, the present application has other objects, features, and advantages. The present application will be described in further detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings are provided to explain the present application and, do not limit the present application in any way. In the drawings:

[0021] Figure 1 is a spatial structure schematic diagram of a bearing chock to be aligned;

[0022] Figure 2 is a cross-sectional main view structure schematic diagram of the bearing chock targeted alignment device of the preferred embodiment of the present application;

[0023] Figure 3It is a three-dimensional exploded schematic view of the bearing seat targeting and straightening device of the preferred embodiment of the present application.

[0024] Legend

[0025] 10, mounting base assembly; 11, mounting base plate; 12, mounting stand; 121, mounting flange; 20, bottom pressing ring member; 21, bottom pressing ring; 22, fastener; 30, bearing seat; 31, lower flange; 301, upper end inner hole; 40, upper outer expansion member; 41, spring expansion sleeve; 42, conical core; 43, first locking nut; 50, upper pressing member; 51, pressing cap; 52, second locking nut. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered by the following.

[0027] Reference Figures 1-3 The preferred embodiment of the present application provides a bearing seat targeting and straightening device, which comprises a mounting base assembly 10 for installation and support, a bottom pressing ring member 20, and an upper pressing expansion assembly. The bearing seat 30 to be straightened is sleeved outside the mounting base assembly 10 and vertically supported on the mounting base assembly 10. The bottom pressing ring member 20 is sleeved on the bearing seat 30 to press and fix the lower flange 31 of the bearing seat 30 on the mounting base assembly 10. The upper pressing expansion assembly is installed at the upper end of the mounting base assembly 10 to outwardly expand and fix the upper end inner hole 301 of the bearing seat 30 and then press and fix the top end.

[0028] When the bearing seat 30 is clamped and fixed by the bearing seat targeting and straightening device of the present application, as shown in Figure 2 and Figure 3 , the bearing seat 30 is vertically sleeved outside the mounting base assembly 10 and supported at the bottom on the mounting base assembly 10. The lower end of the bearing seat 30 is fixed on the mounting base assembly 10 by the bottom pressing ring member 20 pressing the lower flange 31 of the bearing seat 30. The upper end of the bearing seat 30 is outwardly expanded and fixed by the upper pressing expansion assembly, and the top end is then pressed and fixed by the upper pressing expansion assembly, so that the stable support and fixation of the bearing seat 30 can be achieved, and the bearing seat 30 is forced to have the same precision as the straightening device, thereby accurately controlling the straightening of the bearing seat 30 and ensuring the effect of the later straightening.

[0029] Optionally, as shown in Figure 2 and Figure 3As shown, the mounting base assembly 10 comprises a mounting base plate 11 and a mounting column 12 vertically fixed on the mounting base plate 11. The bearing seat 30 is sleeved on the mounting column 12 and vertically supported on the mounting base plate 11. The bottom pressing ring member 20 presses the lower flange 31 of the bearing seat 30 to be fixed on the mounting base plate 11. The upper pressing expansion assembly is connected to the upper end of the mounting column 12. In this alternative, the mounting base assembly 10 is simple in structure, easy to process and manufacture.

[0030] Alternatively, as shown in Figure 2 The bottom pressing ring member 20 comprises a bottom pressing ring 21 sleeved on the outer circle of the lower end of the bearing seat 30 and a fastener 22 for connection and fixation. The bottom pressing ring 21 is pressed on the lower flange 31 of the bearing seat 30. The fastener 22 is connected to the mounting base plate 11 after penetrating the bottom pressing ring 21 and the lower flange 31, so that the bottom pressing ring 21 presses the lower flange 31 to be fixed on the mounting base plate 11. In this alternative, as shown in Figure 3 The bottom pressing ring 21 is annular and has a notch in the circumferential direction, which facilitates the assembly and disassembly of the bottom pressing ring 21 on the bearing seat 30. The fastener 22 is a fastening bolt, which is uniformly and spacedly arranged along the circumferential direction of the bottom pressing ring 21, thereby uniformly pressing the lower flange 31.

[0031] Alternatively, as shown in Figure 2 The upper pressing expansion assembly comprises an upper outer expansion member 40 and an upper pressing member 50, which are respectively connected to the upper end of the mounting column 12. The upper outer expansion member 40 is located in the upper end inner hole 301 of the bearing seat 30, so as to outwardly expand and fix the upper end inner hole 301 of the bearing seat 30. The upper pressing member 50 is located at the upper end of the bearing seat 30, so as to press the top end of the bearing seat 30.

[0032] In this alternative, as shown in Figure 2 and Figure 3 The upper outer expansion member 40 comprises a spring expansion sleeve 41 and a tapered core 42, which are sequentially sleeved on the outer circle of the mounting column 12 in the axial direction, and a first locking nut 43, which is threadedly connected to the outer circle of the mounting column 12. The first locking nut 43 presses the tapered core 42 downward during rotation, so that the lower end of the tapered core 42 is extruded into the spring expansion sleeve 41, thereby forcing the spring expansion sleeve 41 to expand outward to outwardly expand and fix the upper end inner hole 301 of the bearing seat 30. In operation, the first locking nut 43 is rotated and moved downward, thereby forcing the lower end of the tapered core 42 to be extruded into the upper end port of the spring expansion sleeve 41, so that the spring expansion sleeve 41 expands outward to outwardly expand and fix the upper end inner hole 301 of the bearing seat 30.

[0033] Preferably, as shown in Figure 2As shown, the upper end of the mounting column 12 has an outwardly convex annular mounting flange 121, and the outer circumferential surface of the mounting flange 121 is an outer conical surface with gradually increasing outer diameter from top to bottom. The lower end inner hole of the spring expander sleeve 41 is a lower inner conical hole configured to cooperate with the outer conical surface of the mounting flange 121. The spring expander sleeve 41 is limitedly mounted between the mounting flange 121 and the upper end inner hole 301 of the bearing seat 30 through the cooperation of the lower inner conical hole and the outer conical surface, effectively preventing the spring expander sleeve 41 from falling out of the gap between the mounting flange 121 and the upper end inner hole 301, and facilitating easy disassembly of the spring expander sleeve 41 from the mounting column 12.

[0034] Preferably, as shown in Figure 2 , the outer circle of the lower end of the conical core 42 is a rounded conical surface with gradually decreasing outer diameter from top to bottom. The upper end inner hole 301 of the spring expander sleeve 41 is an upper inner conical hole configured to cooperate with the rounded conical surface of the conical core 42. Similarly, the structure of the conical core 42 facilitates the easy extrusion of the lower end of the conical core 42 into the spring expander sleeve 41 when it is forced to press down.

[0035] Preferably, as shown in Figure 3 , the lower end of the spring expander sleeve 41 is provided with lower opening slits arranged circumferentially and extending towards the upper end inner recess. The upper end of the spring expander sleeve 41 is also provided with upper opening slits arranged circumferentially and extending towards the lower end inner recess, and the upper opening slits and the lower opening slits are arranged in sequence. The structure of the spring expander sleeve 41 ensures that it has sufficient strength and rigidity, and at the same time, makes the spring expander sleeve 41 easily expand outwardly under stress, and ensures the external expansion fixing effect.

[0036] Optionally, as shown in Figure 2 and Figure 3 , the upper pressing member 50 includes a pressing cap 51 penetrating the outer circle of the mounting column 12, and a second locking nut 52 threadedly connected to the outer circle of the mounting column 12. The second locking nut 52 rotates to press down the pressing cap 51, so that the lower end of the pressing cap 51 presses down the top end of the bearing seat 30. In operation, the second locking nut 52 is rotated to move downward and press down the pressing cap 51, and the bottom end of the pressing cap 51 presses against the top end of the bearing seat 30 under stress. In this optional scheme, the upper pressing member 50 has a simple structure, and is easy to process and manufacture.

[0037] Referring to Figures 1-3 , the preferred embodiment of the present application also provides a bearing seat target shaping method, comprising the following steps:

[0038] Clamping the bearing seat 30 to the bearing seat target shaping device of any one of the above;

[0039] Non-destructive stress testing of the bearing seat 30 to obtain stress values of each region of the bearing seat 30;

[0040] The stress values obtained are analyzed to mark the stress state and stress values of the corresponding regions;

[0041] The high stress region is subjected to targeted impact treatment to reduce the stress value of the region or even change the stress state;

[0042] The bearing seat 30 is subjected to non-destructive stress detection again, and if the stress state of each position is consistent and the stress value is the same, the bearing seat is considered to be qualified and the shaping is completed.

[0043] Specifically, when the bearing seat 30 is shaped by the bearing seat targeted shaping method of the present application, first, the bearing seat 30 is clamped to the bearing seat targeted shaping device of any one of the above, the bottom pressure ring 21 of the device is used to press the lower flange 31 of the bearing seat tightly to the mounting plate 11, the upper end inner hole 301 of the bearing seat 30 is fixed and fastened by the spring expansion sleeve 41, and finally the pressure cap 51 is pressed tightly. After clamping, the bearing seat 30 is forced to have the same precision as the shaping tool. Since the bearing seat 30 is deformed to a certain extent before being clamped to the shaping device, the bearing seat 30 has stress generated by shaping. Then, the bearing seat 30 clamped to the shaping device is subjected to non-destructive stress detection to obtain the stress value of each region of the bearing seat 30. Next, the corresponding regions corresponding to the obtained stress values are analyzed to mark the stress state (tensile stress or compressive stress) and stress value. Then, the stress is subjected to ultrasonic impact treatment, and the high stress region is subjected to targeted impact treatment to reduce the stress value of the region or even change the stress state. Finally, the bearing seat 30 is subjected to non-destructive stress detection again, and if the stress state of each position is consistent and the stress value is the same, the bearing seat is considered to be qualified and the shaping is completed.

[0044] The bearing seat targeted shaping method of the present application realizes clamping and shaping of the bearing seat 30, measures and evaluates the stress on the workpiece, and then eliminates the stress and further pre-sets the known stress according to the measurement and evaluation results, so as to more accurately understand the stress state of the workpiece and more purposefully target the stress treatment, thereby achieving the shaping of the workpiece and ensuring that the workpiece does not deform during the service period. The bearing seat targeted shaping method of the present application can accurately control the shaping of the bearing seat 30, thereby ensuring the shaping effect and fundamentally solving the deformation problem.

[0045] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for target alignment of a bearing chock, characterized in that, The device comprises a mounting base assembly (10) for installation support, a bottom pressing ring component (20), and an upper pressing and expanding assembly; The bearing seat (30) to be corrected is sleeved on the outside of the mounting base assembly (10) and is vertically supported on the mounting base assembly (10); The bottom pressing ring component (20) is sleeved on the bearing seat (30) to press and fix the lower flange (31) of the bearing seat (30) on the mounting base assembly (10); The upper pressing and expanding assembly is arranged at the upper end of the mounting base assembly (10) to expand and fix the upper end inner hole (301) of the bearing seat (30) outward and then press and fix the top end downward; The mounting base assembly (10) comprises a mounting bottom plate (11) and a mounting column (12) vertically fixed on the mounting bottom plate (11); the upper pressing and expanding assembly comprises an upper outer expanding component (40) and an upper pressing component (50) respectively connected to the upper end of the mounting column (12); The upper outer expanding component (40) comprises a spring expanding sleeve (41) and a tapered core (42) which are sequentially sleeved on the outer circle of the mounting column (12) in the axial direction, and a first locking nut (43) which is threadedly connected to the outer circle of the mounting column (12); the first locking nut (43) presses the tapered core (42) downward during rotation, so that the lower end of the tapered core (42) is extruded into the spring expanding sleeve (41), thereby forcing the spring expanding sleeve (41) to expand outward to outwardly expand and fix the upper end inner hole (301) of the bearing seat (30); The upper end of the mounting column (12) has an annular mounting flange (121) protruding outward, and the outer circumferential surface of the mounting flange (121) is an outer conical surface with gradually increasing outer diameter from top to bottom; the lower end inner hole of the spring expanding sleeve (41) is a lower inner conical hole matched with the outer conical surface of the mounting flange (121), and the spring expanding sleeve (41) is limitedly mounted between the mounting flange (121) and the upper end inner hole (301) of the bearing seat (30) through the cooperation of the lower inner conical hole and the outer conical surface; The outer circle of the lower end of the tapered core (42) is a reverse conical surface with gradually decreasing outer diameter from top to bottom; the upper end inner hole (301) of the spring expanding sleeve (41) is an upper inner conical hole matched with the reverse conical surface of the tapered core (42); The upper pressing component (50) comprises a pressing cap (51) penetrating the outer circle of the mounting column (12) and a second locking nut (52) threadedly connected to the outer circle of the mounting column (12); the second locking nut (52) presses the pressing cap (51) downward during rotation, so that the lower end of the pressing cap (51) presses the top end of the bearing seat (30) downward.

2. The device according to claim 1, wherein the bearing seat (30) is sleeved on the outside of the mounting column (12) and is vertically supported on the mounting bottom plate (11); The bottom pressing ring component (20) presses and fixes the lower flange (31) of the bearing seat (30) on the mounting bottom plate (11); The upper pressing and expanding assembly is connected to the upper end of the mounting column (12).

3. The device according to claim 2, wherein the bottom pressing ring component (20) comprises a bottom pressing ring (21) sleeved on the outer circle of the lower end of the bearing seat (30) and a fastener (22) for connection and fixation. ​ ​ ​ The bottom pressing ring (21) is pressed on the lower flange (31) of the bearing seat (30); The fastener (22) is connected with the mounting base plate (11) after penetrating the bottom pressing ring (21) and the lower flange (31), so that the bottom pressing ring (21) tightly fixes the lower flange (31) on the mounting base plate (11).

4. The device for target alignment of the bearing seat according to claim 2, characterized in that, The upper outer expansion member (40) is located in the upper end inner hole (301) of the bearing seat (30) for outward expansion of the upper end inner hole (301) of the bearing seat (30); The upper pressing member (50) is located at the upper end of the bearing seat (30) for pressing the top end of the bearing seat (30).

5. The device for target alignment of the bearing seat according to claim 4, characterized in that, The lower end of the spring expansion sleeve (41) is provided with lower open slits which are circumferentially spaced and extend inwardly towards the upper end; The upper end of the spring expansion sleeve (41) is also provided with upper open slits which are circumferentially spaced and extend inwardly towards the lower end, and the upper open slits and the lower open slits are arranged in staggered manner.

6. A method of target alignment of a bearing block, characterized in that The method comprises the following steps: Clamping the bearing seat (30) to the device for target alignment of the bearing seat according to any one of claims 1-5; Non-destructive stress testing of the bearing seat (30) to obtain stress values of each region of the bearing seat (30); Analysis of the obtained stress values corresponding to the corresponding region to mark the stress state and stress value; Targeted impact treatment of the high stress region to reduce the stress value of the region or even change the stress state; Again, non-destructive stress testing of the bearing seat (30) is performed, and if the stress state of each position is consistent and the stress value is the same, it is considered as qualified alignment.

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