Tool bit structure convenient to replace

Abstract

The tool bit structure convenient to replace comprises a tool bar, a threaded hole is formed in the top of the tool bar, the inner wall of the threaded hole is in threaded connection with a butt joint, the top of the butt joint is fixedly communicated with a cooling liquid inlet pipe, a water inlet cavity is formed in the outer wall of the tool bar, and a U-shaped column is fixedly connected into the water inlet cavity. According to the utility model, an integral tool apron dismounting structure is adopted, the whole tool apron can be quickly dismounted only by loosening the locking bolt when the tool bit is replaced, and fixing parts of the tool bit body do not need to be dismounted layer by layer, so that the downtime is obviously reduced; double locking is achieved through the limiting assemblies (the I-shaped piece and the oval connector), stability is guaranteed, and the step of independently replacing the tool bit is simplified; cooling liquid is directly conveyed to a cutting area of the tool bit through an integrated flow channel (a water inlet cavity, a water inlet hole, a hollow rectangular column and a thickened liquid outlet pipe), pressure loss caused by a traditional multi-stage pipeline is reduced, and the cooling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of blade replacement technology, and in particular to a blade structure that is easy to replace. Background Technology

[0002] Cutting is an important metalworking process whose main purpose is to apply cutting force to a workpiece using a cutting tool to remove material and form the desired shape and size. The cutting process involves complex physical phenomena, including elasto-plastic deformation, thermo-mechanical coupling, friction, and chip formation. During use, the cutting tool wears down due to contact with the cutting material. The degree of tool wear increases significantly with usage time, and when the tool wear reaches a certain level, it must be replaced to ensure machining quality and efficiency.

[0003] In the existing technology, the coolant delivery path of the traditional tool holder needs to be configured separately on the tool holder, resulting in a large overall size. In addition, the existing tool head structure still requires the disassembly of multiple connecting parts when replacing it individually, making the replacement cumbersome. Therefore, we propose a tool head structure that is easy to replace to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a replaceable cutter head structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A replaceable cutter head structure includes a cutter shank, a threaded hole at the top of the cutter shank, a connector threaded to the inner wall of the threaded hole, a coolant inlet pipe fixedly connected to the top of the connector, a water inlet cavity at the outer wall of the cutter shank, a U-shaped column fixedly connected inside the water inlet cavity, a mating cavity at the outer wall of the cutter shank, a conical head and a rectangular block slidably connected to the inner wall of the mating cavity, a fixed connection between the conical head and the rectangular block, water inlet holes at the outer walls of both the conical head and the rectangular block, a cutter holder fixedly connected to the outer wall of the rectangular block, a cutter head body fixedly connected to the outer wall of the cutter holder, a through hole at the outer wall of the cutter shank, a locking bolt threaded to the inner wall of the through hole, one end of the locking bolt pressing against the outer wall of the conical head, and a limiting component at the outer wall of the cutter holder.

[0007] Preferably, the limiting component includes a hollow rectangular column, one end of which is fixedly connected to the outer wall of the cutter holder. An elliptical connector is slidably sleeved on the outer wall of the hollow rectangular column, and a thickened liquid outlet pipe is fixedly connected to the outer wall of the elliptical connector. An I-shaped part is rotatably connected to the outer wall of the cutter holder. By setting the limiting component, one side of the cutter head body can be limited, which can play a better role in protection and cooling.

[0008] Preferably, the outer wall of the tool holder has multiple mounting holes, and the tool holder is fixed to the machine tool spindle through the multiple mounting holes.

[0009] Preferably, the outer wall of the U-shaped column is in contact with the inner wall of the conical head, and the concave structure of the U-shaped column does not affect the coolant inlet effect.

[0010] Preferably, the outer wall of the thickened liquid outlet tube is pressed against the outer wall of the cutter head body.

[0011] Preferably, the outer wall of the I-shaped part is pressed against the outer wall of the cutter head body.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] This solution adopts an overall disassembly structure for the tool holder. When replacing the tool head, the entire tool holder can be quickly removed simply by loosening the locking bolts, without having to disassemble the fixed components of the tool head body layer by layer, significantly reducing downtime. Double locking is achieved through limiting components (I-shaped parts, elliptical connectors), which not only ensures stability but also simplifies the steps of replacing the tool head individually. Coolant is directly delivered to the cutting area of ​​the tool head through an integrated flow channel (water inlet chamber, water inlet hole, hollow rectangular column, thickened outlet pipe), reducing the pressure loss caused by traditional multi-stage pipelines and improving cooling efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific 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.

[0015] Figure 1 This is a three-dimensional structural diagram of a replaceable cutter head structure proposed in this utility model;

[0016] Figure 2 This is a cross-sectional schematic diagram of a replaceable cutter head structure proposed in this utility model.

[0017] Figure 3 This is a partial three-dimensional structural diagram of a replaceable cutter head structure proposed in this utility model;

[0018] Figure 4 This utility model proposes a replaceable cutter head structure. Figure 2 A magnified structural diagram of part A in the diagram.

[0019] In the diagram: 1. Tool holder; 2. Mounting hole; 3. Connector; 4. Coolant inlet pipe; 5. Inlet chamber; 6. U-shaped column; 7. Conical head; 8. Inlet hole; 9. Rectangular block; 10. Tool holder; 11. Tool head body; 12. Hollow rectangular column; 13. Elliptical connector; 14. Thickened outlet pipe; 15. I-shaped part; 16. Locking bolt. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. 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 an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] Depend on Figures 1-4 As shown, a replaceable cutter head structure is disclosed, including a cutter bar 1. The outer wall of the cutter bar 1 has multiple mounting holes 2. The top of the cutter bar 1 has a threaded hole. The inner wall of the threaded hole is threaded with a connector 3. The top of the connector 3 is fixedly connected to a coolant inlet pipe 4. An existing pump body delivers coolant to the coolant inlet pipe 4 and the connector 3.

[0023] The outer wall of the tool holder 1 has a water inlet cavity 5, and a U-shaped column 6 is fixedly connected inside the water inlet cavity 5. The outer wall of the tool holder 1 has a docking cavity, and a conical head 7 and a rectangular block 9 are slidably connected to the inner wall of the docking cavity. The conical head 7 and the rectangular block 9 are fixedly connected. The U-shaped column 6 assists in the positioning and installation of the conical head 7 and the rectangular block 9. The bottom of the tool holder 1 has a rectangular groove that matches the rectangular block 9, which can increase the stability of the tool holder 10. The outer wall of the U-shaped column 6 is in contact with the inner wall of the conical head 7. Both the outer walls of the conical head 7 and the rectangular block 9 have water inlet holes 8. The overall volume is reduced through the built-in coolant channel.

[0024] The outer wall of the rectangular block 9 is fixedly connected to a tool holder 10. The outer wall of the tool holder 10 is fixedly connected to a tool head body 11 by existing screws. The screws are located at the center of the tool head body 11. The tool holder 10 has a tool groove that matches the tool head body 11 to ensure the stability of the tool head body 11 after it is fixed and to prevent it from rotating during use. The outer wall of the tool bar 1 has a through hole. The inner wall of the through hole is threaded with a locking bolt 16. One end of the locking bolt 16 is pressed against the outer wall of the conical head 7, and the locking bolt 16 fixes the conical head 7 in the mating cavity.

[0025] The outer wall of the tool holder 10 is provided with a limiting component, which includes a hollow rectangular column 12. One end of the hollow rectangular column 12 is fixedly connected to the outer wall of the tool holder 10, and an elliptical connector 13 is slidably sleeved on the outer wall of the hollow rectangular column 12.

[0026] The outer wall of the elliptical connector 13 is fixedly connected to a thickened liquid outlet pipe 14. The outer wall of the thickened liquid outlet pipe 14 is pressed against the outer wall of the cutter head body 11. The thickened liquid outlet pipe 14 plays a limiting role for the cutter head body 11. The outer wall of the cutter holder 10 is rotatably connected to a I-shaped part 15. The outer wall of the cutter holder 10 is fixedly connected to an I-shaped column. The outer wall of the I-shaped column is rotatably fitted with the I-shaped part 15, so that the I-shaped part 15 can rotate stably. The outer wall of the I-shaped part 15 is pressed against the outer wall of the cutter head body 11.

[0027] Working principle: During use, the tool holder 1 is installed onto the machine tool spindle through multiple mounting holes 2 on the tool holder 1. The movement of the spindle drives the tool holder 1 to move. When the tool head body 11 is in use, the existing pump body delivers coolant to the coolant inlet pipe 4 and the connector 3, then into the inlet hole 8 through the inlet chamber 5. The coolant then enters the tool holder 10 and flows into the hollow rectangular column 12. From the hollow rectangular column 12, the coolant enters the thickened outlet pipe 14. The coolant outlet is located on one side of the tool head body 11, cooling the tool head body 11. When the tool head body 11 needs to be replaced, the tool holder 11 is rotated... The locking bolt 16 is released from fixing the position of the conical head 7, allowing the tool holder 10 to be removed as a whole for replacement. This speeds up the replacement process and avoids the need to disassemble and install the tool head body 11 sequentially. When replacing the tool head body 11 on the tool holder 10, rotate the tool 15 to remove the limiting effect on the elliptical connector 13. Slide the elliptical connector 13 outward through the hollow rectangular column 12 so that the thickened liquid outlet tube 14 no longer limits the side of the tool head body 11. Rotate the screws installed on the tool head body 11 and the tool holder 10 to remove the tool head body 11 from the tool holder 10.

[0028] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0029] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A replaceable cutter head structure, comprising a cutter shank (1), characterized in that, The top of the tool holder (1) is provided with a threaded hole, and a connector (3) is threadedly connected to the inner wall of the threaded hole. A coolant inlet pipe (4) is fixedly connected to the top of the connector (3). A water inlet cavity (5) is provided on the outer wall of the tool holder (1). A U-shaped column (6) is fixedly connected inside the water inlet cavity (5). A mating cavity is provided on the outer wall of the tool holder (1). A conical head (7) and a rectangular block (9) are slidably connected to the inner wall of the mating cavity. The conical head (7) and the rectangular block (9) are connected to each other. The conical head (7) and the rectangular block (9) are fixedly connected. Both the outer walls of the conical head (7) and the rectangular block (9) are provided with water inlet holes (8). The outer wall of the rectangular block (9) is fixedly connected with a knife holder (10). The outer wall of the knife holder (10) is fixedly connected with a knife head body (11). The outer wall of the knife bar (1) is provided with a through hole. The inner wall of the through hole is threaded with a locking bolt (16). One end of the locking bolt (16) is pressed against the outer wall of the conical head (7). The outer wall of the knife holder (10) is provided with a limiting component.

2. The replaceable cutter head structure according to claim 1, characterized in that, The limiting component includes a hollow rectangular column (12), one end of which is fixedly connected to the outer wall of the knife holder (10). An elliptical connector (13) is slidably sleeved on the outer wall of the hollow rectangular column (12). A thickened liquid outlet pipe (14) is fixedly connected to the outer wall of the elliptical connector (13). An I-shaped part (15) is rotatably connected to the outer wall of the knife holder (10).

3. The replaceable cutter head structure according to claim 1, characterized in that, The outer wall of the tool holder (1) is provided with multiple mounting holes (2).

4. The replaceable cutter head structure according to claim 1, characterized in that, The outer wall of the U-shaped column (6) is in contact with the inner wall of the conical head (7).

5. The replaceable cutter head structure according to claim 2, characterized in that, The outer wall of the thickened liquid outlet tube (14) is pressed against the outer wall of the cutter head body (11).

6. The replaceable cutter head structure according to claim 2, characterized in that, The outer wall of the I-shaped part (15) is pressed against the outer wall of the cutter head body (11).

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