Clamping fixture for small tools

Abstract

The utility model relates to the technical field of fixture, disclose the clamping fixture of small -size cutter. The clamping fixture of small -size cutter includes handle, clamping piece and tight pressure spare, clamping piece includes base, one end of base is equipped with boss, one end of handle is equipped with recess, boss assembles in recess and is connected with base fixedly, be equipped with elastic pressure block and clamping mouth on base, clamping mouth is along the axial penetration base of base, base side wall is equipped with a radial through -hole, and the radial through -hole extends to elastic pressure block place inwards, be equipped with tight pressure spare in the radial through -hole, and tight pressure spare is connected with base screw thread, through tight pressure spare pressure tight elastic pressure block, with the cutter of fixed clamping in clamping mouth, can improve the stability and reliability of cutter clamping, has improved processing accuracy and processing quality.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to clamping fixtures for small cutting tools. Background Technology

[0002] In machining processes, fixtures are typically used to clamp and position cutting tools. Existing tool fixtures are mostly suitable for standard-sized tools, such as those with a diameter of 1 mm or more. However, some machining scenarios require the use of small tools with a diameter of less than 1 mm. Existing tool fixtures are difficult to adapt to ultra-small tools with a diameter of 1 mm or less, resulting in insufficient clamping force and making it difficult to meet machining requirements.

[0003] Therefore, there is an urgent need for a clamping fixture for small cutting tools to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a clamping fixture for small cutting tools, which can improve the stability and reliability of tool clamping and improve machining quality.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A clamping fixture for small knives includes a knife handle, a clamping component, and a pressing component. The clamping component includes a base, one end of which has a boss, and one end of which has a groove. The boss is fitted into the groove and is fixedly connected to the base.

[0007] The base is provided with an elastic clamping block and a clamping opening. The clamping opening extends through the base along the axial direction of the base. The side wall of the base is provided with a radial through hole. The radial through hole extends inward to the elastic clamping block. A clamping member is provided in the radial through hole. The clamping member is threaded to the base. The elastic clamping block is clamped by the clamping member to fix the tool clamped in the clamping opening.

[0008] Optionally, the base is provided with a receiving space, one end of the elastic clamping block is connected to the base, and the other end is suspended in the receiving space. One side wall of the receiving space is provided with the clamping opening. The two sides of the end of the elastic clamping block connected to the base are respectively provided with a first through hole and a second through hole, and both the first through hole and the second through hole are in communication with the receiving space.

[0009] Optionally, the first through hole is located on the side of the elastic clamping block opposite to the clamping opening, and the diameter of the first through hole is larger than the diameter of the second through hole.

[0010] Optionally, the base is constructed as a cylindrical structure, and the outer wall of the base has a cut surface that is tangent to the outer edge of the boss.

[0011] Optionally, the edge of the boss is provided with a chamfered structure.

[0012] Optionally, the clamping fixture for the small tool further includes a fastener. The tool handle includes a shank and a connecting part. The connecting part has a groove at one end away from the shank. The bottom wall of the groove has a plurality of first fixing holes. The base has a plurality of second fixing holes. The first fixing holes and the second fixing holes correspond one-to-one. The fastener passes through the first fixing holes and the second fixing holes in sequence and is threadedly connected to the base.

[0013] Optionally, a plurality of the first fixing holes are evenly distributed along the axis of the tool holder on the bottom wall of the groove.

[0014] Optionally, the number of the first fixing holes is at least three.

[0015] Optionally, both the handle and the clamping member are made of metal.

[0016] Optionally, the tool holder and the clamping member are made of 42CrMo material.

[0017] Beneficial effects:

[0018] The present invention provides a clamping fixture for small cutting tools, comprising a tool holder, a clamping component, and a clamping component. The clamping component includes a base, one end of which has a boss, and one end of which has a groove. The boss is fitted into the groove and fixedly connected to the base. The base has an elastic clamping block and a clamping opening, which extends through the base along its axial direction. The side wall of the base has a radial through hole that extends inward to the elastic clamping block. The clamping component is located inside the radial through hole and is threadedly connected to the base. By clamping the elastic clamping block with the clamping component, the cutting tool clamped in the clamping opening is fixed, thereby improving the stability and reliability of the cutting tool clamping and improving the machining quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the clamping fixture for small cutting tools provided in a specific embodiment of this utility model;

[0020] Figure 2 This is a cross-sectional view of the clamping fixture for small cutting tools provided in a specific embodiment of this utility model;

[0021] Figure 3 This is a structural schematic diagram of the base provided in a specific embodiment of the present invention from a first-view perspective;

[0022] Figure 4 This is a structural schematic diagram of the base provided in a specific embodiment of the present invention from a second perspective;

[0023] Figure 5This is a radial sectional view of the base provided in a specific embodiment of this utility model;

[0024] Figure 6 This is a schematic diagram of the knife handle provided in a specific embodiment of the present invention from a first-view perspective;

[0025] Figure 7 This is a cross-sectional view of the knife handle provided in a specific embodiment of this utility model;

[0026] Figure 8 This is a schematic diagram of the knife handle provided in a specific embodiment of the present invention from a second perspective.

[0027] In the picture:

[0028] 1. Tool holder; 11. Handle; 12. Connecting part; 13. First fixing hole; 14. Groove; 2. Clamping part; 21. Base; 211. Cutting surface; 22. Boss; 221. Chamfered structure; 23. Second fixing hole; 3. Elastic clamping block; 4. Clamping opening; 5. Radial through hole; 6. Clamping part; 7. First through hole; 8. Second through hole; 9. Tool; 10. Fastener. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] This embodiment provides a clamping fixture for small cutting tools, used to hold small cutting tools, wherein small cutting tools can be understood as tools with a diameter or width less than or equal to 1 mm. Figures 1-3 As shown, the clamping fixture for small cutting tools includes a tool holder 1, a clamping member 2, and a clamping member 6. The clamping member 2 includes a base 21, one end of which has a boss 22, and one end of which has a groove 14. The boss 22 is fitted into the groove 14 and fixedly connected to the base 21. The base 21 has an elastic clamping block 3 and a clamping opening 4. The clamping opening 4 passes through the base 21 along its axial direction. The side wall of the base 21 has a radial through hole 5, which extends inward to the elastic clamping block 3. The clamping member 6 is provided in the radial through hole 5 and is threadedly connected to the base 21. By clamping the elastic clamping block 3 with the clamping member 6, the cutting tool 9 clamped in the clamping opening 4 is fixed, which can improve the stability and reliability of the cutting tool 9 clamping and improve the machining accuracy and machining quality.

[0034] Optionally, the clamping member 6 can be a screw. In this embodiment, the clamping member 6 is a countersunk hexagon screw, and the corresponding radial through hole 5 is a countersunk through hole, so that the screw head does not protrude from the outer wall of the base 21, thus improving the overall aesthetics.

[0035] Optionally, such as Figure 3As shown, the elastic clamping block 3 has a first through hole 7 and a second through hole 8 on both sides of its root. Specifically, the base 21 has a receiving space. One end of the elastic clamping block 3 is connected to the base 21, and the other end is suspended in the receiving space. One side wall of the receiving space has a clamping opening 4. The first through hole 7 and the second through hole 8 are provided on both sides of the end of the elastic clamping block 3 connected to the base 21. Both the first through hole 7 and the second through hole 8 are connected to the receiving space, so that the elastic clamping block 3 has a certain elasticity in the radial direction of the base 21, improving the convenience of clamping.

[0036] Optionally, such as Figure 3 and Figure 4 As shown, the first through hole 7 is located on the side of the elastic clamping block 3 away from the clamping opening 4, and the diameter of the first through hole 7 is larger than the diameter of the second through hole 8, making it easier for the elastic clamping block 3 to deform towards the clamping opening 4, thus improving the clamping effect on the tool 9. At the same time, the larger diameter of the first through hole 7 helps to disperse local stress and improve the service life of the elastic clamping block 3.

[0037] Optionally, such as Figure 4 As shown, the base 21 has a cylindrical structure, and the outer wall of the base 21 has a cutting surface 211 that is tangent to the outer edge of the boss 22. In use, the tool holder 1 and the clamping member 2 are assembled and fixed together. The elastic clamping block 3 is pressed by the clamping member 6 in the radial through hole 5 to fix the tool 9 clamped in the clamping opening 4. The installation direction of the tool 9 is confirmed by the cutting surface 211, which improves the clamping efficiency and clamping convenience.

[0038] Optionally, such as Figure 5 As shown, the edge of the boss 22 is provided with a chamfered structure 221, which can guide the tool holder 1 and the boss 22 during assembly, making it easier for the two to fit together smoothly and reducing jamming during the assembly process. At the same time, the chamfer can effectively prevent burrs or sharp corners on the edge of the boss 22 from scratching the tool holder 1, improving the safety of assembly and the appearance quality of the tool holder 1.

[0039] Optionally, such as Figure 1 , Figure 6 and Figure 7 As shown, the clamping fixture for the small cutting tool also includes a fastener 10. The tool handle 1 includes a shank 11 and a connecting part 12. The end of the connecting part 12 away from the shank 11 is provided with a groove 14. The bottom wall of the groove 14 is provided with a plurality of first fixing holes 13. The base 21 is provided with a plurality of second fixing holes 23. The first fixing holes 13 and the second fixing holes 23 correspond one-to-one. The fastener 10 passes through the first fixing holes 13 and the second fixing holes 23 in sequence and is threadedly connected to the base 21. Through the above arrangement, the fastener 10 can realize a reliable connection between the tool handle 1 and the clamping member 2, and improve the connection strength between the tool handle 1 and the base 21.

[0040] In this embodiment, the fastener 10 is a fastening screw, which is low in cost, has high rigidity, and has a good fastening effect, ensuring a stable connection between the handle 1 and the base 21.

[0041] Optionally, a number of first fixing holes 13 are evenly distributed along the axis of the tool holder 1 on the bottom wall of the groove 14, and the second through holes 8 correspond one-to-one with the first through holes 7, thereby improving the stability and reliability of the connection between the base 21 and the tool holder 1.

[0042] Optionally, such as Figure 8 As shown, the number of first fixing holes 13 is at least three, which can form multiple connection points between the tool holder 1 and the base 21, thereby achieving uniform force distribution and significantly enhancing the stability and reliability of the connection. In other embodiments, the number of first fixing holes 13 can be four, five, six, etc., and the number of first fixing holes 13 is not specifically limited and can be set according to actual needs.

[0043] Optionally, both the handle 1 and the clamping member 2 are made of metal, which can significantly improve the overall strength and durability of the handle 1 and the clamping member 2.

[0044] Optionally, both the tool holder 1 and the clamping member 2 are made of 42CrMo material, which can significantly improve the mechanical strength, wear resistance and fatigue resistance of the tool holder 1 and the clamping member 2, thereby extending the service life of the tool holder 1 and the clamping member 2.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A clamping fixture for small cutting tools, characterized in that, It includes a knife handle (1), a clamping member (2) and a pressing member (6). The clamping member (2) includes a base (21). One end of the base (21) is provided with a boss (22). One end of the knife handle (1) is provided with a groove (14). The boss (22) is assembled in the groove (14) and fixedly connected to the base (21). The base (21) is provided with an elastic clamping block (3) and a clamping opening (4). The clamping opening (4) passes through the base (21) along the axial direction of the base (21). The side wall of the base (21) is provided with a radial through hole (5). The radial through hole (5) extends inward to the elastic clamping block (3). A clamping member (6) is provided in the radial through hole (5). The clamping member (6) is threaded to the base (21). The elastic clamping block (3) is clamped by the clamping member (6) to fix the tool (9) clamped in the clamping opening (4).

2. The clamping fixture for small cutting tools according to claim 1, characterized in that, The base (21) is provided with a receiving space. One end of the elastic pressing block (3) is connected to the base (21), and the other end is suspended in the receiving space. One side wall of the receiving space is provided with the clamping port (4). The two sides of the end of the elastic pressing block (3) connected to the base (21) are respectively provided with a first through hole (7) and a second through hole (8). The first through hole (7) and the second through hole (8) are both connected to the receiving space.

3. The clamping fixture for small cutting tools according to claim 2, characterized in that, The first through hole (7) is located on the side of the elastic clamping block (3) away from the clamping opening (4), and the diameter of the first through hole (7) is larger than the diameter of the second through hole (8).

4. The clamping fixture for small cutting tools according to claim 1, characterized in that, The base (21) is constructed as a cylindrical structure, and the outer wall of the base (21) is provided with a cutting surface (211) that is tangent to the outer edge of the boss (22).

5. The clamping fixture for small cutting tools according to claim 1, characterized in that, The edge of the boss (22) is provided with a chamfered structure (221).

6. The clamping fixture for small cutting tools according to claim 1, characterized in that, The clamping fixture for the small cutting tool also includes a fastener (10). The handle (1) includes a shank (11) and a connecting part (12). The connecting part (12) has a groove (14) at one end away from the shank (11). The bottom wall of the groove (14) has a plurality of first fixing holes (13). The base (21) has a plurality of second fixing holes (23). The first fixing holes (13) and the second fixing holes (23) correspond one-to-one. The fastener (10) passes through the first fixing holes (13) and the second fixing holes (23) in sequence and is threadedly connected to the base (21).

7. The clamping fixture for small cutting tools according to claim 6, characterized in that, Several first fixing holes (13) are evenly distributed along the axis of the tool holder (1) on the bottom wall of the groove (14).

8. The clamping fixture for small cutting tools according to claim 6, characterized in that, The number of the first fixing holes (13) is at least 3.

9. The clamping fixture for small cutting tools according to any one of claims 1-8, characterized in that, Both the handle (1) and the clamp (2) are made of metal.

10. The clamping fixture for small cutting tools according to claim 9, characterized in that, Both the handle (1) and the clamping member (2) are made of 42CrMo material.

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