Single-case large-ring raceway supporting structure

Abstract

The utility model discloses a single-case large-ring raceway supporting structure, and relates to the technical field of single-case large-ring raceway supporting. The positioning device comprises a reference plate, and further comprises a positioning part which is installed on the front face of the reference plate and used for positioning a supporting structure, and a positioning part which is installed on the front face of the reference plate and used for positioning the supporting structure. The supporting part is mounted on the positioning part, and the supporting part is used for supporting the ferrule; the datum plate is used for being installed on a machine tool. According to the utility model, the roundness and the waviness are improved by arranging the supporting arcs, particularly external pre-adjusting four-point arc traceless supporting, so that the influence of three, five and seven outer-diameter edges on the grinding of the raceway can be filtered to a certain extent, and the consistency of geometric accuracy of a product and the quantification of eccentricity play a role in supporting failure prevention; the support abrasion is reduced, the service life is prolonged by more than ten times, the product has no support marks, the subsequent procedures are reduced, the influence of ferrule scrapping, wall thickness difference, perpendicularity difference and the like is reduced due to no subsequent outer diameter grinding, and the product precision is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of single-row large-ring raceway support, and particularly relates to a single-row large-ring raceway support structure. Background Technique

[0002] The single-row large-ring raceway of a hub bearing refers to the outer ring (large ring) and its conical raceway structure in a single-row tapered roller bearing, and a support structure is required for support during the processing of the single-row large-ring raceway; in the traditional single-row large-ring raceway support structure, the single-row large-ring raceway is usually supported by using a square fixing block. This support method will cause relatively large wear of the product, and there will be support marks. Subsequently, the outer diameter needs to be ground, and in severe cases, the ring will be scrapped, thus affecting the product accuracy. Content of the Utility Model

[0003] The purpose of the utility model is to provide a single-row large-ring raceway support structure. By setting a support arc, specifically, the off-machine pre-adjusted four-point arc trace-free support improves the roundness and waviness, and can filter out the influence of the three-, five-, and seven-edge multi-faceted shapes of the outer diameter on the grinding process of the raceway to a certain extent. The consistency of the geometric accuracy of the product and the quantification of eccentricity play a role in preventing support failure, reducing support wear and extending the service life by more than ten times. The product has no support marks, reducing subsequent processes, and no subsequent outer diameter grinding reduces the scrapping of rings, wall thickness difference, vertical difference, etc., making the product accuracy higher, and solving the problem that in the traditional single-row large-ring raceway support structure, the single-row large-ring raceway is usually supported by using a square fixing block, which will cause relatively large wear of the product, and there will be support marks. Subsequently, the outer diameter needs to be ground, and in severe cases, the ring will be scrapped.

[0004] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0005] The utility model is a single-row large-ring raceway support structure, including a reference plate, and further includes:

[0006] A positioning part, the positioning part is installed on the front surface of the reference plate, and the positioning part is used for positioning the support structure; and

[0007] A support part, the support part is installed on the positioning part, and the support part is used for supporting the ring;

[0008] Wherein, the reference plate is used for being installed on a machine tool, and the concentricity of the installation position of the machine tool and the reference plate is calibrated to be ≤ 0.02 mm.

[0009] Furthermore, the positioning part includes an L-shaped positioning block positioned and installed on the reference plate. Two locking threaded shafts I are threadedly connected to the front surface of the L-shaped positioning block. Plug holes I are respectively opened on the right side and the bottom of the L-shaped positioning block, and positioning pins I are inserted into the plug holes I;

[0010] Among them, the L-shaped positioning block is fixed on the reference plate by bolts, and the first locking threaded shaft corresponds to the first jack.

[0011] Furthermore, the supporting part includes an off-machine pre-adjusting support plate positioned and placed on the L-shaped positioning block. The off-machine pre-adjusting support plate is installed on the reference plate by bolts, and positioning holes II are provided at both the bottom and the right side of the off-machine pre-adjusting support plate;

[0012] A supporting component, which is installed on the off-machine pre-adjusting support plate and is used to support the ferrule;

[0013] Among them, two groups of the supporting components are provided in total. When the off-machine pre-adjusting support plate is installed on the reference plate, the off-machine pre-adjusting support plate is positioned by using the positioning part.

[0014] Furthermore, the supporting component includes a connecting block positioned and installed on the off-machine pre-adjusting support plate. A supporting arc is fixedly connected to the top of the connecting block, and a positioning hole I is provided at the bottom of the connecting block; the supporting arc and the eccentric are formed by one-time grinding with a special fixture, and the radian of the supporting arc coincides with the outer diameter and height of the ferrule;

[0015] Among them, two arc-shaped protrusions are provided on the supporting arc, and the two supporting arcs form a four-point arc without trace support.

[0016] Furthermore, two fixing blocks are fixedly connected to the front surface of the off-machine pre-adjusting support plate. A second jack is provided inside the fixing block, and a second positioning pin is inserted into the second jack. A second locking threaded shaft is threadedly connected to the front surface of the fixing block; the entire off-machine pre-adjusting support plate adopts three-point positioning, the flatness of the installation surface ≤ 0.02mm, the perpendicularity between the installation surface and the workpiece axis radius mm ≤ 0.02mm, the concentricity of the supporting grinding fixture is calibrated with an eccentric plate ≤ 0.02mm, the concentricity of the machine tool installation position is calibrated with the reference plate ≤ 0.02mm, the off-machine pre-adjusting support plate can be quickly replaced, and the eccentricity does not need to be adjusted inside the machine, which improves the adjustment and changeover speed;

[0017] Among them, the second positioning pin is used for positioning and matching the supporting component, and the fixing block and the off-machine pre-adjusting support plate are integrally formed.

[0018] Furthermore, the first positioning pin is adapted to the shape of the second positioning hole. After the first positioning pin is inserted into the second positioning hole, the off-machine pre-adjusting support plate is positioned, and when the first locking threaded shaft rotates clockwise, the inserted first positioning pin is locked and fixed.

[0019] Furthermore, the shape of the second positioning pin is adapted to the first positioning hole. After the second positioning pin is inserted into the first positioning hole, it is used to position the connecting block, and the second locking threaded shaft is rotated clockwise to contact the second positioning pin and lock it.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model improves the roundness and waviness by setting a support arc, specifically a four-point arc markless support pre-adjusted outside the machine, which can effectively filter out the influence of three, five, and seven multi-edges on the outer diameter on the raceway grinding. The consistency of the product's geometric accuracy and the quantification of the eccentricity play a role in preventing support failure, reducing support wear and extending the service life by more than ten times. The product has no support mark, which reduces the subsequent processes. No subsequent outer diameter grinding reduces the scrapping of the ring, wall thickness difference, vertical difference and other effects, making the product more accurate.

[0022] 2. The utility model sets an external pre-adjustment support plate, specifically, removes the bolts on the external pre-adjustment support plate, loosens the locking threaded shaft 1 and pulls out the positioning pin 1, releases the restriction of the external pre-adjustment support plate, and takes out the external pre-adjustment support plate. When the connecting block needs to be disassembled, the bolts on the connecting block are removed, and the locking threaded shaft 2 is rotated counterclockwise to loosen the positioning pin 2, and then the positioning pin 2 is pulled out to disassemble the connecting block, which is convenient for subsequent maintenance and replacement, and the external pre-adjustment support plate can be quickly replaced without adjusting the eccentricity in the machine, thereby improving the adjustment and changeover speed.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of the reference plate of the utility model;

[0027] Figure 3 This is a schematic diagram of the overall structure of the pre-adjusted support plate outside the machine of the utility model;

[0028] Figure 4 This is a schematic diagram of the overall structure of the connecting block of the utility model.

[0029] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0030] 1. Reference plate; 2. Positioning part; 21. L-shaped positioning block; 22. First locking threaded shaft; 23. First jack; 24. First positioning pin; 3. Support part; 31. External pre-adjustment support plate; 311. Fixed block; 312. Second jack; 313. Second positioning pin; 314. Second locking threaded shaft; 32. Support assembly; 321. Connecting block; 322. Support arc; 323. First positioning hole; 33. Second positioning hole. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-4 As shown, the present invention is a single-instance large-ring raceway support structure, including a reference plate 1, and further including:

[0033] A positioning part 2, which is installed on the front surface of the reference plate 1, and the positioning part 2 is used to position the support structure; and

[0034] A support part 3, which is installed on the positioning part 2, and the support part 3 is used to support the raceway;

[0035] Among them, the reference plate 1 is used to be installed on the machine tool, and the concentricity of the installation position of the machine tool is calibrated with the reference plate 1 to be ≤ two wires.

[0036] The positioning part 2 includes an L-shaped positioning block 21 positioned and installed on the reference plate 1. Two first locking threaded shafts 22 are threadedly connected to the front surface of the L-shaped positioning block 21. A first jack 23 is opened on both the right side and the bottom of the L-shaped positioning block 21, and a first positioning pin 24 is inserted into the first jack 23;

[0037] Among them, the L-shaped positioning block 21 is fixed on the reference plate 1 by bolts, and the first locking threaded shaft 22 corresponds to the first jack 23.

[0038] The support part 3 includes an external pre-adjustment support plate 31 positioned and placed on the L-shaped positioning block 21. The external pre-adjustment support plate 31 is installed on the reference plate 1 by bolts. Second positioning holes 33 are opened on both the bottom and the right side of the external pre-adjustment support plate 31;

[0039] A support assembly 32, which is installed on the external pre-adjustment support plate 31, and the support assembly 32 is used to support the raceway;

[0040] Among them, there are two sets of support components 32. When the off-machine pre-adjustment support plate 31 is installed on the reference plate 1, the positioning part 2 is used to position the off-machine pre-adjustment support plate 31.

[0041] The support component 32 includes a connection block 321 positioned and installed on the off-machine pre-adjustment support plate 31. A support arc 322 is fixedly connected to the top of the connection block 321, and a first positioning hole 323 is opened at the bottom of the connection block 321. The off-machine pre-adjustment four-point arc trace-free support improves roundness and waviness, and can effectively filter out the influence of multi-faceted rolling on the outer diameter of 3, 5, and 7 on the raceway grinding process. The consistency of product geometric accuracy and the quantification of eccentricity play a role in preventing support failure. The support wear is reduced and the service life is extended by more than ten times. The product has no support marks, reducing subsequent processes. The elimination of subsequent outer diameter grinding reduces the rejection of rings, wall thickness difference, vertical difference, etc., making the product more accurate.

[0042] Among them, two arc-shaped protrusions are provided on the support arc 322, and the two support arcs 322 form a four-point arc trace-free support.

[0043] Two fixing blocks 311 are fixedly connected to the front of the off-machine pre-adjustment support plate 31. A second jack 312 is opened inside the fixing block 311, and a second positioning pin 313 is inserted into the second jack 312. A second locking threaded shaft 314 is threadedly connected to the front of the fixing block 311. Remove the bolts on the off-machine pre-adjustment support plate 31, loosen the locking threaded shaft 22 and pull out the first positioning pin 24 to release the restriction of the off-machine pre-adjustment support plate 31, and then the off-machine pre-adjustment support plate 31 can be taken out. When it is necessary to disassemble the connection block 321, remove the bolts on the connection block 321, rotate the second locking threaded shaft 314 counterclockwise to loosen the second positioning pin 313, and then pull out the second positioning pin 313 to disassemble the connection block 321, which is convenient for subsequent maintenance and replacement. The off-machine pre-adjustment support plate 31 can be quickly replaced without adjusting the eccentricity inside the machine, improving the adjustment and changeover speed.

[0044] Among them, the second positioning pin 313 is used to position and cooperate with the support component 32, and the fixing block 311 and the off-machine pre-adjustment support plate 31 are integrally formed.

[0045] The first positioning pin 24 is adapted to the shape of the second positioning hole 33. After the first positioning pin 24 is inserted into the second positioning hole 33, the off-machine pre-adjustment support plate 31 is positioned, and when the locking threaded shaft 22 is rotated clockwise, the inserted first positioning pin 24 is locked and fixed.

[0046] The shape of the second positioning pin 313 is adapted to the first positioning hole 323. After the second positioning pin 313 is inserted into the first positioning hole 323, it is used to position the connection block 321, and the second locking threaded shaft 314 is rotated clockwise to contact the second positioning pin 313 to lock and fix it.

[0047] A specific application of this embodiment is:

[0048] The reference plate 1 is positioned and installed on the machine tool by bolts. Subsequently, the L-shaped positioning block 21 is positioned and installed on the reference plate 1 by bolts. Then, the off-machine pre-adjusting support plate 31 is placed inside the L-shaped positioning block 21. The L-shaped positioning block 21 is used to position the off-machine pre-adjusting support plate 31. The two positioning pins 24 are respectively inserted into the jacks 23 on the side and bottom of the L-shaped positioning block 21, and the two positioning pins 24 are respectively inserted into the positioning holes 33 on the right side and bottom of the off-machine pre-adjusting support plate 31, thereby positioning the off-machine pre-adjusting support plate 31 again. Subsequently, bolts are used to fix the off-machine pre-adjusting support plate 31 on the reference plate 1. A locking threaded shaft 22 is installed on the L-shaped positioning block 21. By using an external hexagonal tool to rotate the locking threaded shaft 22 clockwise, the positioning pin 24 is locked and fixed. Finally, the connecting block 321 is placed on the fixing block 311, and the positioning pin 313 is inserted into the jack 312 and at the same time into the positioning hole 323 to position the connecting block 321. Subsequently, bolts are used to fix the connecting block 321 on the off-machine pre-adjusting support plate 31. Finally, the locking threaded shaft 314 is installed on the fixing block 311, and the positioning pin 313 is locked and fixed. The other connecting block 321 is installed in the same way. Since the top of the support arc 322 is provided with two arc-shaped protrusions, the support arcs 322 on the two connecting blocks 321 form a four-point arc support. This method can achieve mark-free support, improving roundness and waviness. When it is necessary to disassemble the off-machine pre-adjusting support plate 31, the bolts on the off-machine pre-adjusting support plate 31 are disassembled, and the locking threaded shaft 22 is loosened to pull out the positioning pin 24 to release the restriction of the off-machine pre-adjusting support plate 31, and then the off-machine pre-adjusting support plate 31 can be taken out. When it is necessary to disassemble the connecting block 321, the bolts on the connecting block 321 are disassembled, and the locking threaded shaft 314 is rotated counterclockwise to loosen the positioning pin 313, and then the positioning pin 313 is pulled out, and the connecting block 321 can be disassembled, which is convenient for subsequent maintenance and replacement.

[0049] The large ring raceway support uses four-point arc contact with the ring. The support arc 322 and the eccentricity are formed by grinding with a special fixture in one time. The radian of the support arc 322 coincides with the outer diameter and height of the ring. Grinding greatly improves the roundness, waviness of the workpiece, and the eccentricity data of the support is quantified and unified (20 ± 2.5 wires). With data support, replacement can be done before the support eccentricity wears out. The principle of the support surface contact is the same as that of the dynamic pressure shaft. When the ring rotates, a certain oil wedge effect is generated, reducing support wear and leaving no support marks on the ring, greatly improving the support life (service life over 6 months). The whole off-machine pre-adjusting support plate 31 uses three-point positioning. The flatness of the installation surface ≤ two wires, the perpendicularity between the installation surface and the workpiece axis radius of 100 mm ≤ two wires, the concentricity calibration of the support grinding fixture with the eccentric plate ≤ two wires, and the concentricity calibration of the machine tool installation position with the reference plate 1 ≤ two wires. The off-machine pre-adjusting support plate 31 can be quickly replaced without adjusting the eccentricity inside the machine, improving the adjustment and changeover speed.

[0050] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A singleton large-ring raceway support structure, including a reference plate, characterized in that, Further included are: a positioning part, which is installed on the front surface of the reference plate and is used for positioning the support structure; and a support part, which is installed on the positioning part and is used for supporting the ferrule; wherein, the reference plate is used for being installed on the machine tool, and the concentricity of the installation position of the machine tool is calibrated with the reference plate to be ≤ two wires.

2. The single-instance large-ring raceway support structure according to claim 1, characterized in that, The positioning part includes an L-shaped positioning block positioned and installed on the reference plate. Two locking threaded shafts I are threadedly connected to the front surface of the L-shaped positioning block. Plug holes I are respectively opened on the right side and the bottom of the L-shaped positioning block, and a positioning pin I is inserted into the plug hole I; wherein, the L-shaped positioning block is fixed on the reference plate by bolts, and the locking threaded shaft I corresponds to the plug hole I.

3. The single-instance large-ring raceway support structure according to claim 2, characterized in that, The support part includes an off-machine pre-adjustment support plate positioned and placed on the L-shaped positioning block. The off-machine pre-adjustment support plate is installed on the reference plate by bolts. Positioning holes II are respectively opened on the bottom and the right side of the off-machine pre-adjustment support plate; a support assembly, which is installed on the off-machine pre-adjustment support plate and is used for supporting the ferrule; wherein, two groups of the support assemblies are provided in total. When the off-machine pre-adjustment support plate is installed with the reference plate, the positioning part is used for positioning the off-machine pre-adjustment support plate.

4. The single-instance large-ring raceway support structure according to claim 3, characterized in that, The support assembly includes a connecting block positioned and installed on the off-machine pre-adjustment support plate. A support arc is fixedly connected to the top of the connecting block, and a positioning hole I is opened at the bottom of the connecting block; wherein, two arc-shaped protrusions are arranged on the support arc, and the two support arcs form a four-point arc non-marking support.

5. The single-instance large-ring raceway support structure according to claim 4, characterized in that, Two fixing blocks are fixedly connected to the front surface of the off-machine pre-adjustment support plate. Plug holes II are opened inside the fixing blocks, and a positioning pin II is inserted into the plug hole II. A locking threaded shaft II is threadedly connected to the front surface of the fixing block; wherein, the positioning pin II is used for positioning and matching the support assembly, and the fixing block and the off-machine pre-adjustment support plate are integrally formed.

6. The single-instance large-ring raceway support structure according to claim 5, characterized in that, The positioning pin I is adapted to the shape of the positioning hole II. After the positioning pin I is inserted into the positioning hole II, the off-machine pre-adjustment support plate is positioned. When the locking threaded shaft I rotates clockwise, the inserted positioning pin I will be locked and fixed.

7. A singleton large-ring raceway support structure according to claim 5, characterized in that, The shape of the positioning pin II is adapted to the positioning hole I. After the positioning pin II is inserted into the positioning hole I, it is used for positioning the connecting block, and the locking threaded shaft II is rotated clockwise to contact the positioning pin II and lock it and fix it.

Images