Flexible tool for copying a spherical surface

Abstract

This utility model discloses a flexible cutting tool for spherical surface contour machining, relating to the field of machining. The utility model includes a cutting tool, a cover plate, a housing, a standard tool holder, a cutting tool connecting seat, a rotating sphere, a cutting tool fixing bolt, and a limiting screw. The cutting tool connecting seat has a tower-like structure, and the cover plate has a circular ring structure. The cutting tool seat is hollow, and a limiting hole for the cutting tool fixing bolt to pass through is located at the top center. The front end of the cutting tool fixing bolt is connected to the central hole of the cutting tool connecting seat. This utility model features a flexible connection that allows the cutting tool to fully conform to the machining surface. The flexible connection method results in more uniform tool wear and higher precision. Installation is achieved using bolts and screws, making installation and disassembly convenient and quick. The top is a standard tool holder, offering strong adaptability.

Description

Technical Field

[0001] This utility model belongs to the field of machining, and in particular relates to a flexible cutting tool for spherical surface contour machining. Background Technology

[0002] Spherical surface contouring tools are specialized tools used for machining spherical curved surfaces, enabling precise machining of spherical surfaces. (See attached instruction manual.) Figure 6-8 As shown, there is an existing structure in which the cutting tool is connected to the tool holder and the tool connecting seat, which is a rigid connection. When machining complex curved surfaces, this rigid cutting tool is prone to vibration marks and requires high positional accuracy. The adjustment is complicated and time-consuming, and the machining accuracy decreases due to uneven tool wear. To address this, this technical solution proposes a flexible connection between the cutting tool and the tool holder, which allows the cutting tool to have a certain degree of freedom around the axis of the tool holder. Utility Model Content

[0003] This utility model provides a flexible cutting tool for spherical surface contouring. A tool fixing bolt installed in the tool holder is inserted into a tool connecting seat. The tool connecting seat is fitted into the central circular hole of a cover plate, and an elastic ring is installed on the inner side wall of the central circular hole of the cover plate through a limiting groove. The elastic ring abuts against the side wall of the tool connecting seat. The top of the tool connecting seat is inserted into a rotating sphere. When the tool contacts the workpiece and machining pressure is applied, the tool will be completely in contact with the machining surface due to the deformation of the elastic ring, the insertion and engagement of the tool fixing bolt and the tool connecting seat, the insertion and engagement of the tool connecting seat and the rotating sphere, and the abutment and buffering between the rotating sphere and the arc-shaped washer. The connection method is flexible, resulting in more uniform tool wear and higher precision. In summary, this solves the problems in the prior art.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model discloses a flexible cutting tool for spherical surface contouring, comprising a cutting tool with a tool holder mounted on top, a cover plate fixed to the tool holder by cover plate fixing screws, an outer shell fixed to the cover plate by shell fixing screws, a standard tool holder fixed to the outer shell by tool holder fixing screws, a cutting tool connecting seat installed in the outer shell, a rotating ball installed between the bottom of the standard tool holder and the top of the outer shell and sleeved on the top of the cutting tool connecting seat, a cutting tool fixing bolt inserted and connected from the center of the bottom of the tool holder upward to the center hole of the cutting tool connecting seat, and a limiting screw for limiting the rotation ball.

[0006] The tool connector is a tower-shaped structure, and the cover plate is a circular structure. The tool connector is fitted into the central circular hole of the cover plate, and an elastic ring is installed on the inner side wall of the central circular hole of the cover plate through a limiting groove. The elastic ring abuts against the side wall of the tool connector.

[0007] The tool holder is hollow and has a limiting hole at the top center for the tool fixing bolt to pass through. The tool fixing bolt is located at the bottom of the limiting hole with a large end that is larger than the diameter of the limiting hole. The front end of the tool fixing bolt is connected to the center hole of the tool connecting seat.

[0008] The rotating sphere is provided with a positioning groove that engages with the top of the tool connector.

[0009] Furthermore, the rotating sphere is symmetrically provided with insertion positioning round holes on both sides, and positioning threaded holes corresponding to the insertion positioning round holes are provided on both sides of the standard tool holder. Limiting screws are installed in the internal threads of the positioning threaded holes, and O-rings are installed at the front end of the limiting screws in the insertion positioning round holes.

[0010] Furthermore, the upper part of the rotating sphere is provided with an arc-shaped washer, and the rotating sphere is larger than the diameter of the channel hole opened on the surface of the outer shell for the tool connecting seat to pass through.

[0011] Furthermore, the tool fixing bolt, rotating ball, outer shell, tool connecting seat, tool holder, and tool are arranged with a coaxial centerline.

[0012] Furthermore, the elastic ring is made of rubber.

[0013] Furthermore, the housing fixing screw extends upwards from the bottom of the cover plate and is threadedly connected to the threaded hole at the bottom of the housing.

[0014] Furthermore, the cover plate fixing screw is inserted into the positioning hole at the bottom of the tool connecting seat from the mounting hole on the surface of the tool holder, and the cover plate fixing screw is an expansion screw.

[0015] Furthermore, the tool holder fixing screw passes upward from the bottom of the top plate at the upper channel position of the outer casing and is threadedly connected to the mounting hole at the bottom of the standard tool holder.

[0016] The present invention has the following advantages over the prior art:

[0017] (1) Flexible connection: The tool fixing bolt installed in the tool holder is inserted into the tool connecting seat. The tool connecting seat is sleeved in the central circular hole of the cover plate. The inner side wall of the central circular hole of the cover plate is equipped with an elastic ring through the limiting groove. The elastic ring abuts against the side wall of the tool connecting seat. The top of the tool connecting seat is inserted into the rotating ball. When the tool contacts the workpiece and the processing pressure is applied, the tool will be completely attached to the processing surface through the deformation of the elastic ring, the insertion and cooperation of the tool fixing bolt and the tool connecting seat, the insertion and cooperation of the tool connecting seat and the rotating ball, and the abutment and buffering of the rotating ball and the arc washer. The connection method is a flexible connection, which makes the tool wear uniform and the accuracy higher.

[0018] (2) The installation is connected by bolts and screws, making installation and disassembly convenient and quick; the top is a standard tool holder, which is highly adaptable.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a flexible cutting tool for spherical surface contouring combined with a workpiece according to the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure from the perspective of point A;

[0023] Figure 3 for Figure 1 Vertical cross-sectional view;

[0024] Figure 4 for Figure 3 A structural diagram from the perspective of B;

[0025] Figure 5 for Figure 3 Main view of the structure;

[0026] Figure 6 This is a schematic diagram of an existing structure in which a cutting tool is connected to a tool holder and a tool connecting seat.

[0027] Figure 7 for Figure 6 Vertical cross-sectional view;

[0028] Figure 8 for Figure 7 Main view of the structure;

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1-Tool, 2-Tool fixing bolt, 3-Tool holder, 4-Standard tool holder, 5-Rotating ball, 6-Tool connecting seat, 7-Outer shell, 8-Arc washer, 9-Cover plate, 10-Limit screw, 11-O-ring, 12-Cover plate fixing screw, 13-Elastic ring, 14-Workpiece, 15-Shell fixing screw, 16-Tool holder fixing screw, 17-Tool holder. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be understood that the terms "top", "upper part", "surface", "rear side", "side wall", "interior", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] like Figure 6-8 As shown, there is an existing structure in which the cutting tool 1 is connected to the tool holder 17 and the cutting tool connecting seat 6, which is a rigid connection. When machining complex curved surfaces, this rigid cutting tool is prone to generating vibration marks and requires high positional accuracy. The adjustment is complicated and time-consuming, and the machining accuracy decreases due to uneven wear of the cutting tool 1.

[0034] To address this, a flexible cutting tool for spherical surface contouring is proposed; this tool has a certain degree of freedom around the axis of the tool holder.

[0035] Please see Figure 1-5 As shown, this utility model discloses a flexible cutting tool for spherical surface contouring. The bottom of the tool is attached to the workpiece 14 to be machined into a spherical surface. The flexible cutting tool includes a cutting tool 1 with a cutting tool holder 3 mounted on top, a cover plate 9 fixed to the cutting tool holder 3 by cover plate fixing screws 12, a housing body 7 fixed to the cover plate 9 by housing fixing screws 15, a standard cutting tool holder 4 fixed to the housing body 7 by cutting tool holder fixing screws 16, a cutting tool connecting seat 6 installed inside the housing body 7, a rotating ball 5 installed between the bottom of the standard cutting tool holder 4 and the top of the housing body 7 and sleeved on the top of the cutting tool connecting seat 6, a cutting tool fixing bolt 2 inserted from the center of the bottom of the cutting tool holder 3 upwards and connected to the center hole of the cutting tool connecting seat 6, and a limiting screw 10 for limiting the rotation of the ball 5. The cutting tool 1 is specifically made of an oilstone. The standard cutting tool holder 4 and the cutting tool 1 are the same as in the prior art, and the standard cutting tool holder 4 can be directly installed with the mounting components. The specific structure of the rotating ball 5 is as follows. Figure 3-5 As shown, the interior has a convex-shaped cavity that is inserted into the tool connecting seat 6.

[0036] The tool connector 6 has a tower-shaped structure, with the top adopting a convex-shaped structure corresponding to the convex-shaped cavity. The cover plate 9 has a ring-shaped structure. The tool connector 6 is fitted into the central circular hole of the cover plate 9, and an elastic ring 13 is installed on the inner side wall of the central circular hole of the cover plate 9 through a limiting groove. The elastic ring 13 abuts against the side wall of the tool connector 6.

[0037] The tool holder 3 is hollow and has a limiting hole 31 at the top center for the tool fixing bolt 2 to pass through. The tool fixing bolt 2 is located at the bottom of the limiting hole 31 with a large end that is larger than the diameter of the limiting hole. The front end of the tool fixing bolt 2 is connected to the center hole of the tool connecting seat 6.

[0038] The rotating sphere 5 has a positioning groove, i.e., a convex-shaped cavity, that is, a positioning groove that is inserted and matched with the top of the tool connecting seat 6.

[0039] The rotating sphere 5 has symmetrical insertion positioning holes on both sides. The standard tool holder 4 has positioning threaded holes on both sides corresponding to the insertion positioning holes. The positioning threaded holes are threaded with limit screws 10, and the front end of the limit screws 10 is installed with an O-ring 11 in the insertion positioning hole. The O-ring 11 is made of rubber.

[0040] Among them, the upper part of the rotating ball 5 is provided with an arc-shaped washer 8. The diameter of the rotating ball 5 is larger than the channel hole opened on the surface of the outer shell 7 for the tool connecting seat 6 to pass through, so as to limit the rotation ball 5; the arc-shaped washer 8 is made of rubber.

[0041] Among them, the tool fixing bolt 2, the rotating ball 5, the outer shell 7, the tool connecting seat 6, the tool holder 3, and the tool 1 are arranged with a coaxial centerline.

[0042] Among them, the elastic ring 13 is made of rubber.

[0043] Among them, the housing fixing screw 15 passes through the bottom of the cover plate 9 and is threaded to the threaded hole at the bottom of the outer shell 7; the cover plate fixing screw 12 is inserted into the mounting hole on the surface of the tool holder 3 and is connected to the positioning hole at the bottom of the tool connecting seat 6. The cover plate fixing screw 12 is an expansion screw.

[0044] The tool holder fixing screw 16 extends upward from the bottom of the top plate at the upper channel position of the outer casing 7 and is threadedly connected to the bottom mounting hole of the standard tool holder 4.

[0045] The working principle is as follows: The tool 1 is glued to the tool holder 3, and then fixed to the tool connecting seat 6 with the tool fixing bolt 2. The tool connecting seat 6 is connected to the rotating ball 5. When the tool 1 contacts the workpiece 14 and a certain processing pressure is applied, the tool 1 will be completely in contact with the processing surface through the deformation of the elastic body 13, the insertion and engagement of the tool fixing bolt 16 and the tool connecting seat 6, the insertion and engagement of the tool connecting seat 6 and the rotating ball 5, and the contact buffering between the rotating ball 5 and the arc-shaped washer 8. The connection method is a flexible connection, which makes the wear of the tool 1 more uniform and precise, and ensures that the tool 1 is completely in contact with the processing surface, so that the shape and position of the workpiece 14 are not damaged, while the workpiece 14 can be processed to the required size and roughness. The whole set of devices can achieve quick tool change through the standard tool holder 4, and is convenient to install and disassemble with bolts.

[0046] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A flexible cutting tool for contour machining of spherical surfaces, characterized in that, Includes a cutting tool (1) with a cutting tool holder (3) mounted on top, a cover plate (9) fixedly mounted on the cutting tool holder (3) by a cover plate fixing screw (12), an outer shell (7) fixedly mounted on the cover plate (9) by a shell fixing screw (15), a standard cutting tool holder (4) fixedly mounted on the outer shell (7) by a cutting tool holder fixing screw (16), a cutting tool connecting seat (6) installed inside the outer shell (7), a rotating ball (5) installed between the bottom of the standard cutting tool holder (4) and the top of the outer shell (7) and sleeved on the top of the cutting tool connecting seat (6), a cutting tool fixing bolt (2) inserted and connected from the center of the bottom of the cutting tool holder (3) upward to the center hole of the cutting tool connecting seat (6), and a limiting screw (10) for limiting the rotating ball (5); The tool connecting seat (6) is a tower-shaped structure, and the cover plate (9) is a ring-shaped structure. The tool connecting seat (6) is fitted into the central hole of the cover plate (9), and an elastic ring (13) is installed on the inner side wall of the central hole of the cover plate (9) through a limiting groove. The elastic ring (13) abuts against the side wall of the tool connecting seat (6). The tool holder (3) is hollow and has a limiting hole (31) at the top center for the tool fixing bolt (2) to pass through. The tool fixing bolt (2) is located at the bottom of the limiting hole (31) with a large end larger than the diameter of the limiting hole. The front end of the tool fixing bolt (2) is connected to the center hole of the tool connecting seat (6). The rotating sphere (5) is provided with a positioning groove that is inserted into the top of the tool connecting seat (6).

2. The flexible cutting tool for spherical surface contour machining according to claim 1, characterized in that, The rotating sphere (5) is symmetrically provided with insertion positioning round holes on both sides. The standard tool holder (4) is provided with positioning threaded holes corresponding to the insertion positioning round holes on both sides. The positioning threaded holes are threaded with limit screws (10), and the front end of the limit screws (10) is installed with an O-ring (11) in the insertion positioning round hole.

3. A flexible cutting tool for spherical surface contour machining according to claim 1, characterized in that, The rotating sphere (5) is provided with an arc-shaped washer (8) on its upper part. The rotating sphere (5) is larger than the diameter of the channel hole opened on the surface of the outer shell (7) for the tool connecting seat (6) to pass through.

4. A flexible cutting tool for spherical surface contour machining according to claim 1, characterized in that, The tool fixing bolt (2), rotating ball (5), outer shell (7), tool connecting seat (6), tool holder (3) and tool (1) are arranged with a coaxial centerline.

5. A flexible cutting tool for spherical surface contour machining according to claim 1, characterized in that, The elastic ring (13) is made of rubber.

6. A flexible cutting tool for spherical surface contour machining according to claim 1, characterized in that, The housing fixing screw (15) passes through the bottom of the cover plate (9) and is threadedly connected to the threaded hole at the bottom of the outer shell (7).

7. A flexible cutting tool for spherical surface contour machining according to claim 1, characterized in that, The cover plate fixing screw (12) is inserted into the positioning hole at the bottom of the tool connecting seat (6) from the mounting hole on the surface of the tool holder (3).

8. A flexible cutting tool for spherical surface contour machining according to claim 1, characterized in that, The tool holder fixing screw (16) passes through the bottom of the top plate at the upper channel position of the outer shell (7) and is threadedly connected to the bottom mounting hole of the standard tool holder (4).

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