Tool for checking machining size of bearing body after surfacing

Abstract

The utility model discloses a tool for checking the machining size of a bearing body after surfacing, which comprises a centering fixing device fixed in the bearing body, the centering fixing device is rotatably connected with an L-shaped measuring device through a connecting device, and the measuring device can rotate in the circumferential direction and axially move around the bearing body. The measuring device is provided with a radial arm and an axial arm, the inner side of the radial arm is close to the end face of the bearing body, the inner side of the axial arm is provided with a calibration face, and the calibration face is close to the peripheral face of the bearing body. The adaptability is high, and the inspection requirements of different types of bearing bodies can be flexibly met. Adjustable bolts distributed on the circumference of the centering fixing device can adapt to bearing bodies with different inner diameters, and a fixing structure does not need to be independently customized for each inner diameter; and the movable design of the axial arm can cover bearing bodies with different axial lengths, so that the customized number of special tools is reduced, and the processing and manufacturing cost of the inspection tool is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of bearing body cladding after machining size's checking tool, belong to checking tool technical field. BACKGROUND

[0002] Bearing body cladding is widely used in many fields of valve, chemical etc. The bearing body of reactor coolant pump is a core component inside coolant pump, and its role is crucial, and its core role is to provide accurate, stable, clean, lubricated and cooled working environment for key bearing, while serving as the support and sealing interface of shaft seal system, to ensure that pump shaft can rotate reliably, smoothly and long life at high speed.

[0003] Bearing body cladding is a technology that a layer of special material is deposited on the surface of the bearing body by welding method, to resist the corrosion of high temperature and high pressure boron-containing water and lubricant, resist fretting wear, scratches and abrasive wear, maintain dimensional accuracy and fit, and prolong service life. It realizes the composite structure of "matrix toughness + surface wear resistance". Due to the problems of uneven surface, size out-of-tolerance and micro-deformation caused by welding stress in the process of cladding, the bearing body cannot directly meet the fit requirements with other components, so it is necessary to remove the excess cladding material by finishing and correct the shape error. The size after cladding and finishing needs to be strictly checked. At present, the traditional comparative measurement method is still used for checking the size after finishing. In actual production, there are often problems such as high cost of manufacturing inspection tools, difficulty in fixing, long time-consuming in inspection process and deviation in inspection data. UTILITY MODEL CONTENT

[0004] The utility model aims at: in view of the above problems, provide a kind of bearing body cladding after machining size's checking tool, can quickly realize the checking of bearing body cladding after machining size.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A kind of bearing body cladding after machining size's checking tool, including the centering fixed device fixed in bearing body, the centering fixed device is rotationally connected with the L-shaped measuring device by connecting device, the measuring device can rotate around bearing body circumferentially and move axially, the measuring device has radial arm and axial arm, the inside of radial arm is close to the end surface of bearing body, the inside of axial arm has calibration surface, and the calibration surface is close to the outer circumferential surface of bearing body.

[0007] Alternatively, the centering fixed device includes a frame, and the frame is provided with positioning bolts distributed along the circumference and having axial lines extending radially along the bearing body.

[0008] Alternatively, the positioning bolts include at least three.

[0009] Alternatively, the connecting device comprises a connecting shaft; the middle part of the centering fixing device is provided with a fixing plate, and the connecting shaft is rotatably arranged on the fixing plate.

[0010] Alternatively, the connecting shaft is provided with a threaded section, and two nuts are arranged on the threaded section and arranged on the two sides of the plane of the fixing plate.

[0011] Alternatively, the outer end of the connecting shaft is a clamping plate, the inner side of the radial arm of the measuring device is provided with a limiting plate, and the limiting plate is inserted into the clamping plate.

[0012] Alternatively, the two sides of the clamping plate are provided with clamping grooves; the middle part of the limiting plate is provided with an opening, and the two sides of the limiting plate are inserted into the clamping grooves; the clamping plate is further provided with a first fastener, and the first fastener acts on the limiting plate through the clamping plate.

[0013] Alternatively, the limiting plate and the radial arm of the measuring device are provided with steps matched with each other, and the steps are connected through a second fastener.

[0014] Alternatively, the axial arm can be telescoped in the axial direction of the bearing body.

[0015] Alternatively, the axial arm comprises a fixed part fixedly connected with the radial arm or integrated with the radial arm, and the fixed part is provided with an insertion slot; the axial arm further comprises a movable part, and the movable part is provided with an insertion block arranged in the insertion slot and axially movable along the insertion slot; the insertion slot is provided with a third fastener, and the third fastener acts on the insertion block through the insertion slot.

[0016] As described above, by adopting the above technical scheme, the beneficial effects of the utility model are:

[0017] 1. The bearing body post-welding machining size inspection tool provided by the utility model has high adaptability and can flexibly cope with inspection requirements of different types of bearing bodies. The adjustable positioning bolts circumferentially distributed on the centering fixing device can be adapted to bearing bodies with different inner diameters, and it is not necessary to separately customize fixing structures for each type of inner diameter; the movement design of the axial arm can cover bearing bodies with different axial lengths, the number of customized special tools is reduced, and the machining and manufacturing cost of the inspection tool is greatly reduced.

[0018] 2, The utility model provides a bearing body after surfacing welding processing size's check frock, and check efficiency is high, and easy operation. The measuring device can rotate around the bearing body circumference, and one -time coverage full -week check area, and need not repeat dismounting, axial arm telescopic adjustment is through the slot scale and fastener and is completed, and the limit plate and the clamping plate's intercalation structure realizes the quick assembly of the measuring device, and the preparation time of check is greatly shortened, and whether the size is up to the standard is judged directly through the calibration surface adhesion, reduces the dependence on the skill of the operator, reduces the artificial judgment deviation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The utility model provides a bearing body after surfacing welding processing size's check frock contains the whole structure schematic diagram of measuring body;

[0020] Figure 2 The utility model provides a bearing body after surfacing welding processing size's check frock's structure schematic diagram;

[0021] Figure 3 It is the structure schematic diagram for connecting device;

[0022] Figure 4 It is the structure schematic diagram for measuring device;

[0023] Figure 5 It is the structure schematic diagram for finding center fixed device;

[0024] Marked in the drawing: 1 - bearing body, 2 - find center fixed device, 21 - frame body, 22 - positioning bolt, 23 - fixed plate, 3 - connecting device, 31 - connecting shaft, 32 - nut, 33 - clamping plate, 34 - clamping groove, 35 - first fastener, 4 - measuring device, 41 - radial arm, 42 - axial arm, 421 - fixed part, 422 - movable part, 423 - plug block, 43 - calibration surface, 44 - limit plate, 45 - second fastener, 46 - third fastener, 47 - step. DETAILED DESCRIPTION

[0025] The utility model is described in detail below in combination with the drawings.

[0026] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following in combination with the drawing and example, this utility model carries out further detailed description.Should understand, the specific example described here is only used to explain the utility model, and is not used to limit the utility model.It should be explained that, except from the dependent embodiment, any embodiment is independently existing, and implementation or not affects the scheme integrity of the rest embodiment, and the dependent embodiment implementation or not also does not affect the scheme integrity of the original embodiment.

[0027] A bearing body after surfacing welding processing size's check frock, such as Figures 1-5As shown, it includes a centering fixture 2 fixed in the bearing body 1, and the centering fixture 2 is rotatably connected to an L-shaped measuring device 4 through a connecting device 3. The measuring device 4 can rotate circumferentially around the bearing body 1 and move axially. The measuring device 4 has a radial arm 41 and an axial arm 42. The inner side of the radial arm 41 is close to the end face of the bearing body 1, and the inner side of the axial arm 42 has a calibration surface 43, and the calibration surface 43 is close to the outer peripheral surface of the bearing body 1.

[0028] Among them, the centering fixture 2 is fixed in the bearing body 1, providing a stable installation foundation for the entire tooling, ensuring that the tooling is consistent with the center of the bearing body 1, and establishing a reliable measurement benchmark. The connecting device 3 connects the measuring device 4 to the centering fixture 2, and allows the measuring device 4 to rotate circumferentially around the bearing body 1, so that the measuring device 4 can fully cover the outer circumference and end face of the bearing body 1. The inner side of the radial arm 41 of the L-shaped measuring device 4 is close to the end face of the bearing body 1 to achieve positioning, and the degree of fit can be used to judge whether the flatness of the end face processing meets the requirements; the calibration surface 43 on the inner side of the axial arm 42 is close to the outer circumference of the bearing body 1, and the fit can be used to reflect whether the radial size, roundness and surface flatness of the outer circumference meet the standards. With the help of the centering fixture 2, a stable installation is achieved, solving the problem of difficult fixation of traditional tooling. The measuring device 4 can move axially along the bearing body 1, which enhances the adaptability of the tooling, reduces the need to customize special measuring devices 4 for bearing bodies 1 with different axial dimensions, and reduces manufacturing costs. Measuring device 4 rotates around bearing body 1, enabling a complete inspection of the entire circumference of bearing body 1 in a single operation, reducing repeated installation and adjustment steps and shortening the inspection process. Dimensional compliance is determined by observing the fit between calibration surface 43 and the surface of bearing body 1, eliminating the need for complex comparative measurements, reducing reliance on operator skill, and minimizing deviations in inspection data. The shape of calibration surface 43 is consistent with the finished appearance, and the accuracy of its fit with the outer peripheral surface is determined based on actual production requirements. Furthermore, the simple structure of the tooling eliminates the need for extensive customization for different bearing body models, reducing the manufacturing cost of the inspection tooling and better accommodating the inspection needs of different bearing body models.

[0029] Alternatively, the centering fixing device 2 comprises a frame 21, and the frame 21 is provided with positioning bolts 22 distributed along the circumference and extending radially along the bearing body 1. The positioning bolts 22 distributed along the circumference and extending radially along the bearing body 1 on the frame 21 can be in contact with the inner wall of the bearing body 1 by adjusting the extension length of each positioning bolt 22. The circumferential distribution can uniformly constrain the frame 21 from multiple directions, and the radial extension direction can make the positioning bolts 22 apply force along the radial direction of the bearing body 1 during tightening, gradually calibrate the concentricity of the frame 21 and the bearing body 1, and ensure that the center of the centering fixing device 2 accurately coincides with the center of the bearing body 1. Through the telescopic adjustment of the bolts, the bearing body 1 with different inner diameters can be adapted without the need to customize the fixing structure for each type. The cooperation of multiple bolts can improve the connection stability of the frame 21 and the bearing body 1, and avoid the reference deviation caused by loose fixation during measurement. The uniform stress distribution can also reduce the local pressure on the inner wall of the bearing body 1 and protect the processing surface.

[0030] Alternatively, the positioning bolts 22 comprise at least three. The number of positioning bolts 22 is at least three, which can form multi-point support in the circumferential direction. The distribution of three or more can form a stable positioning structure, and the cooperation of positioning bolts 22 in different directions can avoid the rotation or inclination around the axis that may occur when two-point support is used, and ensure the stable posture of the frame 21 in the bearing body 1. The adjustment of each positioning bolt 22 can be coordinated, and the extension length of each positioning bolt 22 can be gradually adjusted to more accurately calibrate the concentricity of the frame 21 and the bearing body 1 and reduce the center deviation caused by uneven single-point stress.

[0031] Alternatively, the connecting device 3 comprises a connecting shaft 31, and the centering fixing device 2 has a fixing plate 23 at the middle part, and the connecting shaft 31 is rotatably arranged on the fixing plate 23. The rotatable arrangement enables the connecting shaft 31 to drive the measuring device 4 to rotate flexibly around the bearing body 1, so that the calibration surface 43 of the measuring device 4 can fully adhere to the outer circumferential surface and the end surface of the bearing body 1, covering all areas to be checked. The fixing plate 23 is located at the middle part of the centering fixing device 2 and is connected with the frame 21, which can ensure that the axis of the connecting shaft 31 is consistent with the center of the centering fixing device 2, and the centering fixing device 2 has been calibrated to be concentric with the bearing body 1 by the positioning bolts 22, so that the rotation axis of the connecting shaft 31 can accurately coincide with the axis of the bearing body 1.

[0032] Alternatively, the connecting shaft 31 is provided with a threaded section, and two nuts 32 are arranged on the threaded section and located on both sides of the plane of the fixing plate 23. The two nuts 32 on the connecting shaft 31 are located on both sides of the plane of the fixing plate 23, and the fixing plate 23 can be axially clamped by tightening, thereby limiting the axial movement of the connecting shaft 31. This structure ensures that the axial position of the connecting shaft 31 relative to the fixing plate 23 is stable when the connecting shaft 31 rotates around the bearing body 1, avoids the relative position deviation between the measuring device 4 and the bearing body 1 due to axial displacement, and ensures the stable fitting state of the inner side of the radial arm 41 and the end face of the bearing body 1 and the fitting state of the alignment surface 43 of the axial arm 42 and the outer peripheral surface of the bearing body 1. At the same time, by rotating and adjusting the two nuts 32, the axial position of the connecting shaft 31 relative to the fixing plate 23 can be flexibly adjusted to adapt to bearing bodies 1 of different axial sizes or end face positions, thereby enhancing the adaptability of the tool to different types of workpieces. The clamping action of the nuts 32 can also enhance the assembly stability of the connecting shaft 31 and the fixing plate 23, reduce the shaking of the measuring device 4 during rotation, and make the fitting inspection more accurate.

[0033] Alternatively, the outer end of the connecting shaft 31 is a clamping plate 33, the inner side of the radial arm 41 of the measuring device 4 is provided with a limiting plate 44, and the limiting plate 44 is inserted into the clamping plate 33. The clamping plate 33 at the outer end of the connecting shaft 31 and the limiting plate 44 at the inner side of the radial arm 41 of the measuring device 4 form an insertion structure, the limiting plate 44 inserted into the clamping plate 33 can quickly determine the relative position of the measuring device 4 and the connecting shaft 31, ensure the positioning accuracy of the two in the radial and axial directions, and make the inner side of the radial arm 41 of the measuring device 4 and the alignment surface 43 of the axial arm 42 accurately align with the end face and the outer peripheral surface of the bearing body 1, thereby reducing the time-consuming position adjustment during assembly. The clamping plate 33 forms a wrapping constraint on the inserted limiting plate 44, which can limit the shaking of the limiting plate 44 from both sides, thereby enhancing the connection stability of the measuring device 4 and the connecting shaft 31. When the measuring device 4 rotates around the bearing body 1, this insertion structure can transmit torque and resist radial force, avoid the deviation of the measuring device 4 relative to the connecting shaft 31, ensure the stable fitting state of the alignment surface 43 and the surface of the bearing body 1, and improve the consistency of the inspection.

[0034] Alternatively, the clamping plate 33 is provided with clamping grooves 34 on both sides; the middle part of the limiting plate 44 is provided with an opening, and both sides of the limiting plate 44 are inserted into the clamping grooves 34; the clamping plate 33 is further provided with a first fastener 35, which acts on the limiting plate 44 through the clamping plate 33. The clamping grooves 34 on both sides of the clamping plate 33 are adaptively inserted into both sides of the limiting plate 44, and the clamping grooves 34 precisely guide the limiting plate 44 from both sides, limiting the transverse displacement of the limiting plate 44 in the clamping plate 33, ensuring the relative position of the limiting plate 44 and the clamping plate 33 stable, so that the radial arm 41 and the axial arm 42 of the measuring device 4 can always be aligned with the end face and the outer peripheral surface of the bearing body 1, improving the initial positioning accuracy. The clamping grooves 34 are open along the axial direction and both sides, and the limiting plate 44 and the clamping grooves 34 are inserted along the axial direction. The opening in the middle part of the limiting plate 44 reserves a space for the non-opening part in the middle part of the clamping plate 33, avoiding structural interference. The first fastener 35 on the clamping plate 33 acts on the limiting plate 44 through the clamping plate 33, further applying clamping force on the basis of insertion, firmly fixing the limiting plate 44 in the clamping grooves 34, preventing the limiting plate 44 from loosening due to centrifugal force or vibration when the measuring device 4 rotates around the bearing body 1, ensuring that the inside of the radial arm 41 and the end face of the bearing body 1, the alignment surface 43 of the axial arm 42 and the outer peripheral surface of the bearing body 1 always remain stable, reducing positional deviation during inspection. The first fastener 35 is a jacking screw, and the clamping plate 33 is provided with a threaded hole, and the first fastener 35 jacks the limiting plate 44 through the threaded hole.

[0035] Alternatively, the limiting plate 44 and the radial arm 41 of the measuring device 4 are provided with steps 47 that cooperate with each other, and the steps 47 are connected by a second fastener 45. The steps 47 on the limiting plate 44 and the radial arm 41 of the measuring device 4 can form precise positioning constraints during assembly, limiting the relative sliding and misalignment of the two in the plane, ensuring that the connection position of the limiting plate 44 and the radial arm 41 accurately corresponds, providing a stable reference for the fit inspection. The steps 47 are connected by the second fastener 45, further strengthening the connection strength on the basis of positioning, firmly fixing the limiting plate 44 and the radial arm 41 as a whole, avoiding relative displacement due to stress when the measuring device 4 rotates around the bearing body 1, and ensuring that the alignment surface 43 and the surface of the bearing body 1 always remain stable. The second fastener 45 is a bolt, and the limiting plate 44 and the radial arm 41 are provided with threaded holes; or the second fastener 45 is connected with a nut 32 after passing through the limiting plate 44 and the radial arm 41.

[0036] Alternatively, the axial arm 42 can be telescopic along the axial direction of the bearing body 1. The position of the calibration surface 43 can be flexibly adjusted according to the axial length of the bearing body 1, so that the calibration surface 43 always fits the outer circumferential surface of the bearing body 1 at different axial positions, ensuring that the full axial range from one end surface to the other end can be covered for inspection, avoiding partial area missed inspection or loose fitting due to the axial size difference of the bearing body 1. The telescopic adjustment does not need to replace the entire measuring device 4, but only needs to adjust the length by simple operation, so as to adapt to the axial size difference of different types of bearing bodies 1.

[0037] Alternatively, the axial arm 42 includes a fixed part 421 fixedly connected or integrated with the radial arm 41, and the fixed part 421 is provided with a slot; the axial arm 42 further includes a movable part 422, and the movable part 422 is provided with an insertion block 423, which is arranged in the slot and can move axially along the slot; the slot is provided with a third fastener 46, which acts on the insertion block 423 through the slot. The fixed part 421 of the axial arm 42 is connected with or integrally formed with the radial arm 41, which provides stable support for the entire axial arm 42. The slot on the fixed part 421 and the insertion block 423 of the movable part 422 form a sliding fit, and when the insertion block 423 moves axially along the slot, it can guide the movable part 422 to stably telescope along the axial direction of the bearing body 1, avoiding deviation or shaking, and ensuring that the calibration surface 43 on the movable part 422 is always aligned along the axial direction of the bearing body 1, without direction deviation caused by telescoping. The third fastener 46 on the slot acts on the insertion block 423 through the slot, and after the movable part 422 is adjusted to the appropriate position, the insertion block 423 is fixed in the slot by locking, preventing the movable part 422 from being displaced due to external force or vibration during the inspection process, and ensuring the stability of the fitting state of the calibration surface 43 and the outer circumferential surface of the bearing body 1. The third fastener 46 is a jacking screw, and the slot is provided with a threaded hole, and the third fastener 46 passes through the slot to jack the insertion block 423.

[0038] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. The present application extends to any new features or any new combinations disclosed in the specification, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the details of the embodiments not disclosed, such as specific structures, are all prior art, which can be obtained by those skilled in the art. The connection mode can be fixed connection, detachable connection or integral connection; it can be fixed connection, movable connection or hinged connection, and it can be directly connected or indirectly connected through an intermediate medium. Those skilled in the art can understand the specific mode of the above terms in the embodiments of the present application according to the specific circumstances, and the embodiments of the present disclosure do not make specific limitations on this.

Claims

1. A tool for inspecting the dimensions of a bearing body after surfacing welding, characterized in that: The invention comprises a centering fixture (2) fixed in a bearing body (1), wherein the centering fixture (2) is rotatably connected to an L-shaped measuring device (4) via a connecting device (3), wherein the measuring device (4) can rotate circumferentially around the bearing body (1) and move axially, and wherein the measuring device (4) has a radial arm (41) and an axial arm (42), wherein the inner side of the radial arm (41) is close to the end face of the bearing body (1), and the inner side of the axial arm (42) has a calibration surface (43), and the calibration surface (43) is close to the outer peripheral surface of the bearing body (1).

2. The inspection tool according to claim 1, characterized in that: The centering and fixing device (2) comprises a frame (21), on which positioning bolts (22) are distributed along the circumference and whose axes extend radially along the bearing body (1).

3. The inspection tool according to claim 2, characterized in that: The number of the positioning bolts (22) is at least three.

4. The inspection tool according to claim 1, characterized in that: The connecting device (3) includes a connecting shaft (31); the middle portion of the centering fixing device (2) is provided with a fixing plate (23), and the connecting shaft (31) is rotatably arranged on the fixing plate (23).

5. The inspection tool according to claim 4, characterized in that: The connecting shaft (31) is provided with a threaded section, and the threaded section is provided with two nuts (32). The two nuts (32) are respectively arranged on both sides of the plane of the fixing plate (23).

6. The inspection tool according to claim 4, characterized in that: The outer end of the connecting shaft (31) is a clamping plate (33), and a limiting plate (44) is provided on the inner side of the radial arm (41) of the measuring device (4), and the limiting plate (44) is inserted into the clamping plate (33).

7. The inspection tool according to claim 6, characterized in that: The clamping plate (33) is provided with a card slot (34) on both sides; the middle part of the limiting plate (44) has an opening, and the two sides of the limiting plate (44) are inserted into the card slot (34); the clamping plate (33) is also provided with a first fastener (35), and the first fastener (35) passes through the clamping plate (33) and acts on the limiting plate (44).

8. The inspection tool according to claim 1, characterized in that: The limiting plate (44) and the radial arm (41) of the measuring device (4) are provided with mutually matching steps (47), and the steps (47) are connected by a second fastener (45).

9. The inspection tool according to claim 1, characterized in that: The axial arm (42) can be extended and retracted along the axial direction of the bearing body (1).

10. The inspection tool according to claim 9, characterized in that: The axial arm (42) includes a fixed portion (421) fixedly connected to or integrated with the radial arm (41), and a slot is provided on the fixed portion (421); the axial arm (42) also includes a movable portion (422), and an insert block (423) is provided on the movable portion (422). The insert block (423) is arranged in the slot and can move axially along the slot; a third fastener (46) is provided on the slot, and the third fastener (46) passes through the slot and acts on the insert block (423).

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