Inner hole grinding tool for improving roughness and cylindricity of inner hole

Abstract

The utility model relates to the technical field of inner hole grinding equipment for improving the roughness and cylindricity of an inner hole, in particular to an inner hole grinding tool for improving the roughness and cylindricity of the inner hole, which comprises an adapter rod, a base is fixed at the end part of the adapter rod, a plurality of groups of grinding components are arranged on the outer wall of the base in a sliding manner, and the grinding components are arranged on the adapter rod. The grinding assembly can move in the direction perpendicular to the center line of the adapter rod, the grinding assembly comprises an oilstone sleeve and at least two guide columns, the guide columns are connected with the base in a sliding mode, the ends of the guide columns are fixedly connected with the oilstone sleeve, and grinding oilstone is fixed to the end, away from the adapter rod, of the oilstone sleeve. The inner hole grinding tool is high in structural adaptability, the inner hole grinding tool can adapt to workpieces with different inner hole sizes by replacing components such as the spring and the guide column in the tool, the inner hole grinding tool is wide in applicability, the number of the inner hole grinding tool is reduced, and the machining cost of parts is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to improve the inner hole roughness and cylindricity's inner hole grinding equipment technical field especially relates to a kind of inner hole grinding tooling for improving the inner hole roughness and cylindricity. BACKGROUND

[0002] As the core transmission component of mechanical equipment, the planetary gear box is particularly critical in the design of the central hole of the planetary gear. This hole not only realizes the stable connection of the planetary gear and the planet carrier, ensuring the stability and reliability of power transmission, but also bears the important task of efficiently transmitting the power of the input shaft to the output shaft to ensure the stable operation of the planetary gear box under complex working conditions.

[0003] In the production process of the planetary gear box, the surface roughness of the central hole and the inner hole cylindricity are two key quality control indicators, which need to be strictly controlled through high-precision machining and strict detection to ensure the performance, reliability and life of the planetary gear box and meet the use requirements under complex working conditions.

[0004] Currently, in the existing inner hole grinding equipment, a fixed diameter grinding head is usually used to process the central hole. Although this grinding equipment can be used, the adaptability of the grinding tooling with fixed structure is low, and different specifications of grinding tooling are required when processing different specifications and sizes of workpieces, thereby increasing the processing cost of parts. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide an inner hole grinding tooling for improving the inner hole roughness and cylindricity to solve the problem of using grinding tooling with fixed structure, which requires a large number of grinding toolings when processing workpieces of different specifications and sizes, thereby increasing the processing cost of parts.

[0006] To achieve the above purpose, the utility model provides an inner hole grinding tooling for improving the inner hole roughness and cylindricity, which includes an adapter rod, a base is fixed to the end of the adapter rod, a plurality of groups of grinding assemblies are installed on the outer wall of the base in a sliding manner, the grinding assemblies can move in a direction perpendicular to the center line of the adapter rod, the grinding assemblies include a oilstone sleeve and at least two guide columns, the guide columns are connected to the base in a sliding manner, the end of the guide column is fixedly connected to the oilstone sleeve, a grinding oilstone is fixed to one end of the oilstone sleeve facing away from the adapter rod, a spring is sleeved on the outer wall of the guide column, one end of the spring abuts against the base, the other end of the spring abuts against the oilstone sleeve, and the spring pushes the oilstone sleeve to move away from the adapter rod in the direction of the spring force.

[0007] In an optional example, an end of the adapter rod towards the base is provided with a connecting threaded hole, the base is provided with a connecting through hole penetrating along the axial direction of the adapter rod, and a connecting bolt is inserted into the connecting through hole and fixed in the connecting threaded hole by screwing.

[0008] In an optional example, an end of the base away from the connecting rod is provided with a mounting groove, and the connecting through hole is arranged in the mounting groove and penetrates through the base along the axial direction of the connecting rod.

[0009] In an optional example, a sliding hole penetrating into the mounting groove is arranged on the outer wall of the base, and the guide column is inserted into the sliding hole in a sliding manner.

[0010] In an optional example, a first external thread is arranged on the outer wall of the end of the guide column close to the base, a locking nut is sleeved on the outer wall of the first external thread in a threaded connection manner, and the locking nut is arranged in the mounting groove.

[0011] In an optional example, a support part and a connecting part are arranged on the outer wall of the adapter rod, a limiting boss extending outward is arranged between the support part and the connecting part, the support part is provided with a quadrangular body at an end away from the base, and a positioning hole is arranged at the end of the quadrangular body.

[0012] In an optional example, an oil stone insertion groove is arranged on the oil stone sleeve along the axial direction of the adapter rod, and the grinding oil stone is inserted into the oil stone insertion groove.

[0013] In an optional example, a second external thread is arranged on the outer wall of the end of the guide column away from the base, an internal threaded hole perpendicular to the axial direction of the adapter rod is arranged in the oil stone insertion groove, and the second external thread is fixedly connected with the internal threaded hole in a threaded connection manner.

[0014] In an optional example, the oil stone insertion groove penetrates through the oil stone sleeve towards an end of the adapter rod.

[0015] In an optional example, the grinding oil stone is in a cylindrical shape, and the oil stone insertion groove is in a C shape.

[0016] The inner hole grinding tool has the advantages of simple structure and easy disassembly, can be quickly applied to the machining process of various wheel inner holes, reduces the installation and adjustment time, simplifies the installation process, improves the disassembly efficiency, and has strong adaptability, can adapt to workpieces with different inner hole sizes by replacing the spring and guide column and other components in the tool, has wide applicability, reduces the number of inner hole grinding tools, and reduces the machining cost of parts. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the technical scheme of the utility model or the prior art clearer, the drawings needed in the embodiment or the prior art description will be briefly introduced below, obviously, the drawings in the following description are only the utility model, and other drawings can be obtained according to these drawings without creative labor for the ordinary skilled in the art.

[0018] Figure 1 The utility model is a three-dimensional structure diagram Figure 1 ;

[0019] Figure 2 The utility model is a three-dimensional structure diagram Figure 2 ;

[0020] Figure 3 The utility model is an explosive structure diagram

[0021] Figure 4 The utility model is a three-dimensional structure diagram of the adapter rod

[0022] Figure 5 The utility model is a three-dimensional structure diagram of the oil stone sleeve.

[0023] Marked as: 1, adapter rod;11, connecting threaded hole;12, support part;13, connecting part;14, limiting boss;15, square;2, base;21, connecting through hole;22, installation slot;23, sliding hole;3, guide column;31, first external thread;32, second external thread;4, spring;5, oil stone sleeve;51, oil stone insertion slot;52, internal threaded hole;6, grinding oil stone;7, connecting bolt;8, locking nut. Specific implementation

[0024] In order to make the technical scheme of the utility model or the prior art clearer, the drawings needed in the embodiment or the prior art description will be briefly introduced below, obviously, the drawings in the following description are only the utility model, and other drawings can be obtained according to these drawings without creative labor for the ordinary skilled in the art.

[0025] It should be noted that, unless otherwise defined, technical or scientific terms used in the present application should be understood as their common meanings to those skilled in the art to which the present application pertains. The terms "first", "second" and similar terms used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "including", "containing" and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, without excluding other elements or objects. The terms "connected" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0026] In an embodiment, referring to Figures 1 to 4 The present application provides an inner hole grinding tool for improving inner hole roughness and cylindricity, which comprises an adapter rod 1, the end of the adapter rod 1 is fixed with a base 2, a plurality of groups of grinding assemblies are installed on the outer wall of the base 2 in a sliding manner, the grinding assemblies can move along the direction perpendicular to the center line of the adapter rod 1, the grinding assemblies comprise an oil stone sleeve 5 and at least two guide columns 3, the guide columns 3 are connected with the base 2 in a sliding manner, the ends of the guide columns 3 are fixedly connected with the oil stone sleeve 5, the oil stone sleeve 5 is fixed with a grinding oil stone 6 at the end away from the adapter rod 1, a spring 4 is sleeved on the outer wall of the guide column 3, one end of the spring 4 abuts against the base 2, the other end of the spring 4 abuts against the oil stone sleeve 5, and the spring 4 pushes the oil stone sleeve 5 to move away from the center line of the adapter rod 1. The spring 4 pushes the oil stone sleeve 5 to move away from the center line of the adapter rod 1, so that the grinding oil stone 6 in the oil stone sleeve 5 can tightly adhere to the processed inner hole, and the grinding of the inner hole of the workpiece is realized; the adapter rod 1 can be adjusted according to the hole diameter and depth, different length of the adapter rod 1 can be replaced for different depth of the processed hole; the grinding assemblies can be arranged at intervals of 60° or 120°, so as to ensure the grinding accuracy of the processed inner hole.

[0027] Specifically, the present application has the advantages of simple structure and easy disassembly, can be quickly applied to the machining process of various inner holes of wheels, reduces the installation and adjustment time, simplifies the installation process, improves the disassembly efficiency, and the inner hole grinding tool structure has strong adaptability, can adapt to workpieces of different inner hole sizes by replacing the spring 4 and guide column 3 and other components in the tool, has wide applicability, reduces the number of inner hole grinding tools, and reduces the machining cost of parts.

[0028] In an optional example, referring to Figures 1 to 4As shown, in order to facilitate assembly, the adapter rod 1 is provided with a connecting threaded hole 11 at one end thereof facing the base 2, the base 2 is provided with a connecting through hole 21 penetrating along the axial direction of the adapter rod 1, and the connecting through hole 21 is inserted with a connecting bolt 7 which is fixed in the connecting threaded hole 11 by threaded connection.

[0029] Specifically, the design of fixing the adapter rod 1 and the base 2 by the connecting bolt 7 not only simplifies the installation process, but also enhances the stability and adaptability of the inner hole grinding tool, further improving the processing efficiency and economy of the inner hole grinding tool.

[0030] In an optional example, please refer to Figures 1 to 4 As shown, the base 2 is provided with a mounting groove 22 at one end thereof facing away from the connecting rod, and the connecting through hole 21 is provided in the mounting groove 22 and penetrates through the base 2 along the axial direction of the connecting rod.

[0031] Specifically, the mounting groove 22 provided on the base 2 facilitates the installation of the inner hole grinding tool, optimizes the installation process of the inner hole grinding tool, and saves the assembly time of the inner hole grinding tool.

[0032] In an optional example, please refer to Figures 1 to 4 As shown, the outer wall of the base 2 is provided with a sliding hole 23 penetrating into the mounting groove 22, and the guide column 3 is inserted into the sliding hole 23 by sliding. The sliding hole 23 adopts a round hole structure, and the guide column 3 has a cylindrical sliding part.

[0033] Specifically, the sliding hole 23 provided on the base 2 enables the guide column 3 to be quickly inserted into the sliding hole 23, which facilitates the quick assembly of the guide column 3 and saves the assembly time of the inner hole grinding tool.

[0034] In an optional example, please refer to Figures 1 to 4 As shown, the guide column 3 is provided with a first external thread 31 on the outer wall of one end thereof close to the base 2, and the first external thread 31 is sleeved with a locking nut 8 by threaded connection, and the locking nut 8 is arranged in the mounting groove 22.

[0035] Specifically, the cooperation of the locking nut 8 and the first external thread 31 can quickly fix the guide column 3, so that the guide column 3 can slide within a set range, which facilitates the quick assembly of the guide column 3 and saves the assembly time of the inner hole grinding tool.

[0036] In an optional example, please refer to Figures 1 to 4As shown, the outer wall of the adapter rod 1 is provided with a support part 12 and a connecting part 13, and a limiting boss 14 extending outward is arranged between the support part 12 and the connecting part 13. The support part 12 is provided with a four-square body 15 at one end away from the base 2, and the end of the four-square body 15 is provided with a positioning hole. The outer wall of the support part 12 is provided with a process groove for tool withdrawal to avoid interference and collision between the tool and the workpiece during processing.

[0037] Specifically, the four-square body 15 is connected with the machine tool for processing to avoid slipping phenomenon at the interface with the machine tool during processing, so as to better ensure the processing quality. The diameter of the support part 12 is greater than that of the connecting part 13, and the support part 12 can increase the structural strength of the adapter rod 1, and the connecting part 13 is connected with the base 2.

[0038] In an optional example, please refer to Figures 1 to 4 As shown, the oil stone sleeve 5 is provided with an oil stone insertion slot 51 along the axial direction of the adapter rod 1, and the abrasive oil stone 6 is inserted into the oil stone insertion slot 51.

[0039] Specifically, the oil stone insertion slot 51 is arranged on the oil stone sleeve 5 to facilitate quick fixing of the abrasive oil stone 6, thereby improving the disassembly and assembly efficiency of the inner hole grinding tool.

[0040] In an optional example, please refer to Figures 1 to 4 As shown, the outer wall of the guide column 3 at one end away from the base 2 is provided with a second external thread 32, and the oil stone insertion slot 51 is provided with an internal thread hole 52 perpendicular to the axial direction of the adapter rod 1. The second external thread 32 is fixedly connected with the internal thread hole 52 in a threaded connection manner.

[0041] Specifically, the second external thread 32 cooperates with the internal thread hole 52 to enable the guide column 3 to be quickly fixed, thereby improving the disassembly and assembly efficiency of the inner hole grinding tool.

[0042] In an optional example, please refer to Figures 1 to 4 As shown, the oil stone insertion slot 51 penetrates the oil stone sleeve 5 at one end of the adapter rod 1.

[0043] Specifically, the abrasive oil stone 6 is inserted into the oil stone insertion slot 51 through the penetration of the oil stone sleeve 5, thereby facilitating quick installation of the abrasive oil stone 6 and improving the disassembly and assembly efficiency of the inner hole grinding tool.

[0044] In an optional example, please refer to ​ As shown, the abrasive oil stone 6 is in a cylindrical shape, and the oil stone insertion slot 51 is in a C shape.

[0045] Specifically, the example fixes the abrasive oil stone 6 through the oil stone insertion groove 51 in the shape of C, which can extend more towards the outer circle of the abrasive oil stone 6, further improving the stability of the abrasive oil stone 6 when fixed, and ensuring the grinding accuracy of the inner hole grinding tool.

[0046] In general, the example, when assembled, first fixes the oil stone sleeve 5 and the guide column 3, then inserts the abrasive oil stone 6 into the oil stone sleeve 5, then sleeves the spring 4 to the outer wall of the guide column 3, then inserts the guide column 3 into the base 2, fixes the guide column 3 by the locking nut 8, and finally fixes the adapter rod 1 and the base 2.

[0047] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary and is not intended to imply that the scope (including claims) of the utility model is limited to these examples; under the idea of the utility model, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the utility model as described above, which are not provided in details for the sake of brevity.

[0048] The utility model aims at covering all such alternatives, modifications and variations falling within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An inner hole polishing tool for improving roughness and cylindricity of an inner hole, comprising an adapter rod (1), characterized in that, The end of the adapter rod (1) is fixed with a base (2), a plurality of groups of grinding assemblies are installed on the outer wall of the base (2) in a sliding manner, the grinding assemblies can move along the direction perpendicular to the center line of the adapter rod (1), the grinding assembly comprises a oilstone sleeve (5) and at least two guide columns (3), the guide column (3) is connected with the base (2) in a sliding manner, the end of the guide column (3) is fixedly connected with the oilstone sleeve (5), the oilstone sleeve (5) is fixed with a grinding oilstone (6) at the end away from the adapter rod (1), the outer wall of the guide column (3) is sleeved with a spring (4), one end of the spring (4) abuts against the base (2), the other end of the spring (4) abuts against the oilstone sleeve (5), the spring (4) pushes the oilstone sleeve (5) to move away from the adapter rod (1) by the elastic force.

2. The inner hole polishing tool for improving inner hole roughness and cylindricity according to claim 1, wherein The end of the adapter rod (1) towards the base (2) is provided with a connecting threaded hole (11), the base (2) is provided with a connecting through hole (21) penetrating along the axial direction of the adapter rod (1), the connecting through hole (21) is inserted with a connecting bolt (7), and the connecting bolt (7) is fixed in the connecting threaded hole (11) in a threaded connection manner.

3. The inner hole lapping tool for improving inner hole roughness and cylindricity according to claim 2, wherein The end of the base (2) away from the connecting rod is provided with a mounting groove (22), the connecting through hole (21) is arranged in the mounting groove (22) and penetrates the base (2) along the axial direction of the connecting rod.

4. The inner hole polishing tool for improving inner hole roughness and cylindricity according to claim 3, wherein The outer wall of the base (2) is provided with a sliding hole (23) penetrating into the mounting groove (22), and the guide column (3) is inserted into the sliding hole (23) in a sliding manner.

5. The bore lapping tool for improving bore roughness and cylindricity according to claim 4, wherein The outer wall of the guide column (3) towards the end close to the base (2) is provided with a first external thread (31), the outer wall of the first external thread (31) is sleeved with a locking nut (8) in a threaded connection manner, and the locking nut (8) is arranged in the mounting groove (22).

6. The bore lapping tool for improving bore roughness and cylindricity according to claim 2, wherein The outer wall of the adapter rod (1) is provided with a supporting portion (12) and a connecting portion (13), a limiting boss (14) extending outward is arranged between the supporting portion (12) and the connecting portion (13), the end of the supporting portion (12) away from the base (2) is provided with a quadrangular body (15), and the end of the quadrangular body (15) is provided with a positioning hole.

7. The bore lapping tool for improving bore roughness and cylindricity according to claim 1, wherein The oilstone sleeve (5) is provided with an oilstone insertion groove (51) along the axial direction of the adapter rod (1), and the grinding oilstone (6) is inserted into the oilstone insertion groove (51).

8. The bore lapping tool for improving bore roughness and cylindricity according to claim 7, wherein The outer wall of the guide column (3) towards the end away from the base (2) is provided with a second external thread (32), the oilstone insertion groove (51) is provided with an internal threaded hole (52) perpendicular to the axial direction of the adapter rod (1), and the second external thread (32) is fixedly connected with the internal threaded hole (52) in a threaded connection manner.

9. The bore lapping tool for improving bore roughness and cylindricity according to claim 7, wherein The end of the oilstone insertion groove (51) towards the adapter rod (1) penetrates the oilstone sleeve (5).

10. The bore lapping tool for improving bore roughness and cylindricity according to claim 7, wherein The grinding oilstone (6) is in a cylindrical shape, and the oilstone insertion groove (51) is in a C shape.

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