Thin-wall large circular ring finish machining tool

Abstract

The utility model discloses a finish machining tool for a thin-wall large circular ring, which relates to the field of finish machining of workpieces and comprises a plurality of outer clamping full-wrapping blocks fixed on a machining chuck and an inner supporting positioning block. The outer clamping full-wrapping blocks are fixed to the machining chuck through the precise positioning blocks, and the outer clamping full-wrapping blocks are all fixed to the peripheral side of the inner supporting positioning block. A clamping station is formed by the interval between the inner supporting positioning block and the outer clamping full-wrapping block. A to-be-machined workpiece is placed in the clamping station between the outer clamping full-wrapping block and the inner supporting positioning block, in the process of clamping and machining the to-be-machined workpiece, the inner supporting positioning block can play a role in supporting the to-be-machined workpiece from the inside, the possibility that the to-be-machined workpiece deforms when being extruded is reduced, and the machining efficiency is improved. And the same finish machining tool can repeatedly machine to-be-machined workpieces of the same model, frequent replacement is not needed, and the problems that in the prior art, a conventional clamp tool is low in machining production efficiency and high in production cost, and the dimensional precision is difficult to guarantee are solved.

Description

Technical Field

[0001] The utility model relates to the field of workpiece finishing, in particular to a thin-walled large ring finishing tool. Background Art

[0002] Conventional lathes usually use three-jaw or fan-shaped three-jaw fixtures on the machining chuck to clamp the outer diameter of the workpiece to be processed before processing the workpiece. When encountering a workpiece with a thin wall thickness, the three-jaw fixture clamps are easy to cause the workpiece to be processed to deform when clamping the outer diameter of the workpiece to be processed inward, which increases the production cost and makes it difficult to complete the processing needs, and cannot guarantee the dimensional accuracy requirements of the workpiece to be processed.

[0003] The bearing products commonly produced in the market are turning rings, which require frequent processing of thin-walled large rings and frequent production changes. Conventional three-jaw or fan-shaped three-jaw fixtures have low efficiency and high production costs during processing and production, and it is difficult to ensure the dimensional accuracy of the workpiece to be processed. Utility Model Content

[0004] The present application provides a thin-walled large ring finishing tooling, which can solve the technical problems existing in the prior art of low production efficiency, high production cost and difficulty in ensuring dimensional accuracy of conventional three-jaw or fan-shaped three-jaw clamp tooling.

[0005] The embodiment of the present application provides a thin-walled large ring finishing tool, which includes:

[0006] Multiple external clamping full-enclosed blocks and internal support positioning blocks used to be fixed on the processing chuck;

[0007] The outer clamping full-enclosing blocks are fixed on the processing chuck through the precise positioning blocks, and the outer clamping full-enclosing blocks are all fixed on the peripheral side of the inner support positioning blocks;

[0008] The interval between the inner support positioning block and the outer clamping full-wrapping block forms a clamping station.

[0009] By adopting the above technical scheme, when performing the thin-walled large ring finishing process, the workpiece to be processed is placed in the clamping station between the outer clamping full-wrapped block and the inner support positioning block. During the clamping process of the workpiece to be processed, the inner support positioning block can support the workpiece to be processed from the inside, thereby reducing the possibility of deformation of the workpiece to be processed when it is squeezed. In addition, the same set of finishing tooling can repeatedly process the same model of workpiece to be processed multiple times without the need for frequent replacement, thereby solving the problems of low processing efficiency, high production cost and inability to guarantee dimensional accuracy of the original tooling equipment in the prior art.

[0010] In one embodiment, connecting holes are correspondingly formed on the precise positioning block and the outer clamping full-enclosing block, and connecting bolts are threadedly connected to the connecting holes.

[0011] By adopting the above technical solution, the connecting bolts are tightened so that the connecting bolts are threadedly connected to the connecting holes on the precise positioning block and the external clamping full block at the same time, thereby stably fixing the external clamping full block on the precise positioning block, thereby reducing the possibility that the external clamping full block will shake under the influence of the power of the processing chuck during the subsequent processing of the workpiece to be processed, thereby affecting the processing accuracy.

[0012] In one embodiment, a precise slot is provided on the precise positioning block, and the precise slot is adapted to the specifications of the outer clamping full-enclosing block.

[0013] By adopting the above technical solution, when installing the external clamping full-enclosing block, the external clamping full-enclosing block can be directly inserted into the precise card slot on the precise positioning block, so that the external clamping full-enclosing block can be quickly installed, which is simple to operate and easy to use.

[0014] In one embodiment, the difference between the outer diameter of the outer clamping block and the outer diameter of the workpiece to be processed is less than 0.05 mm; the difference between the inner diameter of the inner support positioning block and the inner diameter of the workpiece to be processed is less than 0.05 mm.

[0015] By adopting the above technical solution, the inner support positioning block can support the inner diameter surface of the workpiece to be processed from the inside while minimizing the clamping stress of the outer clamping block on the outer diameter surface of the workpiece to be processed during the processing, thereby effectively reducing the possibility of the workpiece to be processed being clamped and deformed, and effectively improving the accuracy and stability of the workpiece to be processed.

[0016] In one embodiment, a hollow chip removal hole is opened in the middle of the inner support positioning block.

[0017] By adopting the above technical scheme, the chips of the workpiece to be processed can be discharged from the hollow chip removal holes in time during the processing, reducing the possibility of chip accumulation of the workpiece to be processed. At the same time, the hollow chip removal holes can also play a role in heat dissipation and cooling during the processing, effectively reducing the possibility of excessive temperature of the internal support positioning block affecting the workpiece to be processed.

[0018] In one embodiment, a first detachable mounting hole is formed on the precise positioning block, and a first mounting bolt is threadedly connected to the first detachable mounting hole.

[0019] By adopting the above technical solution, a mounting hole for installing the precise positioning block is opened on the processing chuck. When installing the precise positioning block, the precise positioning block can be quickly installed on the processing chuck by tightening the first mounting bolt. The structure is simple and easy to use.

[0020] In one embodiment, a second detachable mounting hole is formed on the inner support positioning block, and a second mounting bolt is threadedly connected to the second detachable mounting hole.

[0021] By adopting the above technical solution, a mounting hole for installing the inner support positioning block is opened on the processing chuck. When installing the inner support positioning block, the inner support positioning block can be quickly installed on the processing chuck by tightening the second mounting bolt. The structure is simple and easy to use.

[0022] In one embodiment, the outer clamping full package is made of a rigid metal material.

[0023] By adopting the above technical solution, the strength of the outer clamping block is improved, thereby increasing the service life of the thin-walled large ring finishing tooling.

[0024] In one embodiment, the precise positioning block is made of a rigid metal material.

[0025] By adopting the above technical solution, the strength of the precise positioning block and the internal support positioning block is improved, thereby increasing the service life of the thin-walled large ring finishing tooling.

[0026] In one embodiment, the inner support positioning block is made of a rigid metal material.

[0027] By adopting the above technical solution, the strength of the inner support positioning block is improved, thereby increasing the service life of the thin-walled large ring finishing tooling.

[0028] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0029] By placing the workpiece to be processed in the clamping station between the outer clamping block and the inner support positioning block, during the process of clamping the workpiece to be processed, the inner support positioning block can support the workpiece to be processed from the inside, reducing the possibility of deformation of the workpiece to be processed when it is squeezed, and the same set of finishing tooling can repeatedly process the same model of workpiece to be processed multiple times without the need for frequent replacement, thereby solving the problems of low processing efficiency, high production cost and inability to guarantee dimensional accuracy of the original tooling equipment in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1This is a schematic diagram of the overall structure of a thin-walled large ring finishing tool in this application;

[0032] Figure 2 This is a schematic diagram of the structure of a precise positioning block in a thin-walled large ring finishing tooling for this application;

[0033] In the figure: 1. External clamping full-wrapped block; 11. Precision positioning block; 111. First removable mounting hole; 112. Precision slot; 12. Connection hole; 2. Internal support positioning block; 21. Hollow chip removal hole; 22. Second removable mounting hole; 3. Clamping station. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] The embodiment of the present application provides a thin-walled large ring finishing tooling, which can solve the problems of low production efficiency, high production cost and difficulty in ensuring dimensional accuracy of conventional three-jaw or fan-shaped three-jaw clamp tooling.

[0036] Reference Figure 1 The present application discloses a thin-walled large circular ring finishing tool, comprising a plurality of outer clamping full-enclosed blocks 1 and inner support positioning blocks 2 for fixing on a processing chuck, wherein the inner support positioning block 2 is configured as a circular block having the same shape as the workpiece to be processed but slightly smaller in size than the workpiece to be processed, the outer clamping full-enclosed block 1 is fixed to the circumference of the inner support positioning block 2 by a precise positioning block 11, and one end of the outer clamping full-enclosed block 1 facing the inner support positioning block 2 is configured in a crescent shape, the arc crescent shape of the outer clamping full-enclosed block 1 facing inward is adapted to the arc of the inner support positioning block 2, and the interval between the inner support positioning block 2 and the outer clamping full-enclosed block 1 forms a clamping station 3. When performing the thin-walled large circular ring finishing process, the workpiece to be processed is sleeved on the outside of the inner support positioning block 2, so that the workpiece to be processed is located in the clamping station 3, and the processing chuck drives the outer clamping block 1 to move toward the inner support positioning block 2 to clamp the workpiece to be processed. During the clamping process, the inner support positioning block 2 can support the workpiece to be processed from the inside, reducing the possibility of deformation of the workpiece to be processed when it is squeezed, and the same set of finishing tooling can repeatedly process the same model of workpiece to be processed multiple times without frequent replacement, which solves the problems of low processing efficiency, high production cost and inability to guarantee dimensional accuracy of the original tooling equipment in the prior art.

[0037] More specifically, the difference between the outer diameter of the outer clamping block 1 and the outer diameter of the workpiece to be processed should also be less than 0.05mm, and the difference between the inner diameter of the inner support positioning block 2 and the inner diameter of the workpiece to be processed should be less than 0.05mm, so that the inner support positioning block 2 can support the inner diameter surface of the workpiece to be processed from the inside while minimizing the clamping stress of the outer diameter surface of the workpiece to be processed by the outer clamping block 1 during the processing, thereby effectively reducing the possibility of the workpiece to be processed being clamped and deformed, and effectively improving the accuracy and stability of the workpiece to be processed.

[0038] Reference Figure 2 The precise positioning block 11 is provided with a precise slot 112, which is compatible with the specifications of the external clamping full package block 1. When installing the external clamping full package block 1, the external clamping full package block 1 is directly inserted into the precise slot 112 on the precise positioning block 11, so that the external clamping full package block 1 can be quickly installed, which is simple to operate and convenient to use. The precise positioning block 11 and the external clamping full package block 1 are correspondingly provided with connecting holes 12, and the connecting holes 12 are internally threadedly connected with connecting bolts. After the external clamping full package block 1 is clamped into the precise slot 112, the connecting bolts are tightened so that the connecting bolts are simultaneously threadedly connected with the precise positioning block 11 and the connecting holes 12 on the external clamping full package block 1, thereby stably fixing the external clamping full package block 1 on the precise positioning block 11, thereby reducing the possibility that the external clamping full package block 1 shakes under the influence of the power of the processing chuck when the workpiece to be processed is subsequently processed, thereby affecting the possibility of processing accuracy.

[0039] The thin-walled large circular ring finishing tooling in the present application has strong adaptability. When selecting a processing chuck, you can use an ordinary processing chuck that drives the outer clamping full block 1 to move horizontally toward the inner support positioning block 2 to clamp the workpiece to be processed, or you can use an opening and closing floating chuck that drives the outer clamping full block 1 to rotate toward the inner support positioning block 2 to clamp the workpiece to be processed. The ordinary processing chuck has low cost and is easy to operate. The opening and closing floating chuck can reduce the friction between the outer clamping full block 1 and the workpiece to be processed, and further reduce the possibility of deformation of the workpiece to be processed during the processing. The specific processing chuck selection can be determined according to the actual processing conditions.

[0040] In this embodiment, three pairs of the outer clamping full-enclosing blocks 1 and the precise positioning blocks 11 are specifically provided, and the three pairs of the outer clamping full-enclosing blocks 1 and the precise positioning blocks 11 move toward the inner support positioning blocks 2 from three directions to more stably clamp the workpiece to be processed. In other embodiments, the actual number of the outer clamping full-enclosing blocks 1 and the precise positioning blocks 11 can be selected according to actual working conditions.

[0041] In order to improve the durability of the thin-walled large circular ring finishing tooling, the outer clamping full block 1, the precise positioning block 11 and the inner support positioning block 2 are all made of rigid metal materials to improve the strength of the outer clamping full block 1, the precise positioning block 11 and the inner support positioning block 2, thereby improving the service life of the thin-walled large circular ring finishing tooling.

[0042] In this embodiment, both the precise positioning block 11 and the inner support positioning block 2 can be detachably mounted on the processing chuck, so that the operator can replace the outer clamping full-wrapped block 1 and the inner support positioning block 2 of different specifications. The precise positioning block 11 is provided with a first detachable mounting hole 111, and the first detachable mounting hole 111 is internally threadedly connected with a first mounting bolt; the inner support positioning block 2 is provided with a second detachable mounting hole 22, and the second detachable mounting hole is internally threadedly connected with a second mounting bolt. The processing chuck is provided with mounting holes for mounting the precise positioning block 11 and the inner support positioning block 2. When the precise positioning block 11 and the inner support positioning block 2 are installed, the precise positioning block 11 and the inner support positioning block 2 can be quickly mounted on the processing chuck by the first mounting bolt and the second mounting bolt.

[0043] In other embodiments, the precise positioning block 11 and the inner support positioning block 2 can also be directly welded on the processing chuck to reduce the possibility of movement of the precise positioning block 11 and the inner support positioning block 2 during the processing process. By changing the size of the outer clamping block 1 on the precise positioning block 11, the processing process of the workpiece with the same inner diameter but different thickness can be completed.

[0044] Furthermore, a plurality of hollow chip removal holes 21 are provided around the second detachable mounting hole 22 in the middle of the inner support positioning block 2, so that the chips of the workpiece to be processed can be discharged from the hollow chip removal holes 21 in time during the processing, thereby reducing the possibility of chip accumulation of the workpiece to be processed. At the same time, the hollow chip removal holes 21 can also play a role in heat dissipation and cooling during the processing, thereby effectively reducing the possibility of the internal support positioning block 2 having an excessively high temperature affecting the workpiece to be processed.

[0045] The embodiment of the present application discloses a thin-walled large circular ring finishing tool, and its implementation principle is: the precise positioning block 11 and the inner support positioning block 2 are installed on the processing chuck by the first mounting bolt and the second mounting bolt, and then the outer clamping full-enclosing block 1 is fixed in the precise clamping groove 112 of the precise positioning block 11 by the connecting bolt, and the workpiece to be processed is placed in the clamping station 3, and the processing chuck can be opened to perform the processing process on the workpiece to be processed; during the processing, the debris of the workpiece to be processed can be discharged through the hollow chip discharge hole 21 on the inner support positioning block 2. After the processing is completed, the outer clamping full-enclosing block 1, the precise positioning block 11 and the inner support positioning block 2 are removed, and replaced with another specification and size of the outer clamping full-enclosing block 1, the precise positioning block 11 and the inner support positioning block 2 for installation, and then the processing process of the workpiece to be processed of other specifications and sizes can be carried out.

[0046] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0047] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0048] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A thin-walled large ring finishing tool, characterized in that: It includes: A plurality of external clamping full-envelope blocks (1) and an internal support positioning block (2) used for fixing on a processing chuck; The outer clamping full-enclosing block (1) is fixed on the processing chuck via a precise positioning block (11), and the outer clamping full-enclosing block (1) is fixed on the circumference of the inner support positioning block (2); The space between the inner support positioning block (2) and the outer clamping full-wrapping block (1) forms a clamping station (3).

2. A thin-walled large ring finishing tool according to claim 1, characterized in that: The precise positioning block (11) and the outer clamping full-envelope block (1) are provided with corresponding connection holes (12), and the connection holes (12) are internally threaded with connection bolts.

3. A thin-walled large ring finishing tool according to claim 1, characterized in that: The precise positioning block (11) is provided with a precise slot (112), and the precise slot (112) is adapted to the specifications of the external clamping full-envelope block (1).

4. A thin-walled large ring finishing tool according to claim 1, characterized in that: The difference between the outer diameter of the outer clamping block (1) and the outer diameter of the workpiece to be processed is less than 0.05 mm; the difference between the inner diameter of the inner support positioning block (2) and the inner diameter of the workpiece to be processed is less than 0.05 mm.

5. A thin-walled large ring finishing tool according to claim 1, characterized in that: A hollow chip removal hole (21) is provided in the middle of the inner support positioning block (2).

6. A thin-walled large ring finishing tool according to claim 1, characterized in that: The precise positioning block (11) is provided with a first detachable mounting hole (111), and the first detachable mounting hole (111) is internally threadedly connected with a first mounting bolt.

7. A thin-walled large ring finishing tool according to claim 1, characterized in that: The inner support positioning block (2) is provided with a second detachable mounting hole (22), and the second detachable mounting hole (22) is internally threadedly connected with a second mounting bolt.

8. A thin-walled large ring finishing tool according to claim 1, characterized in that: The outer clamping full package block (1) is made of a rigid metal material.

9. A thin-walled large ring finishing tool according to claim 1, characterized in that: The precise positioning block (11) is made of a rigid metal material.

10. A thin-walled large ring finishing tool according to claim 1, characterized in that: The inner support positioning block (2) is made of a rigid metal material.

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