Milling machine tool with anti-drop structure

Abstract

This utility model relates to the field of milling machine tool technology, specifically a milling machine tool with an anti-detachment structure, including a tool holder, a tool body, and bolts. The tool holder has a mounting groove at its bottom center. The tool body is positioned inside the mounting groove of the tool holder and is fitted against the inner wall of the mounting groove. Multiple connecting blocks are provided at equal angles on the outer surface of the top of the tool body to limit rotation of the tool body within the mounting groove during use. At least one bolt is present, positioned on the side of the tool holder and extending through the tool holder into the mounting groove to connect with the tool body. This utility model uses the tool body to drive the connecting blocks into the mounting groove of the tool holder, ensuring a close fit between the tool body and the inner wall of the mounting groove. Rotating the tool body accommodates the connecting blocks in a limiting groove, where the inner wall of the limiting groove provides limiting support for the connecting blocks. Simultaneously, the bolt passes through the tool holder and is inserted into a threaded groove, fixing the tool body within the tool holder, forming a multi-layered stable structure and improving structural stability.

Description

Technical Field

[0001] This utility model relates to the field of milling machine tool technology, and specifically to a milling machine tool with an anti-detachment structure. Background Technology

[0002] A milling cutter is a rotating cutting tool with one or more cutting teeth used for milling operations. During operation, the cutting teeth sequentially and intermittently remove the excess material from the workpiece. Milling cutters are mainly used on milling machines to machine planes, steps, grooves, shaped surfaces, and cut off workpieces.

[0003] Chinese patent document CN217290586U discloses a CNC milling machine tool with an anti-detachment structure. The tool body is aligned with the groove of the tool body by moving the fixed anti-detachment block outward through a T-shaped tie rod. Then, by releasing the T-shaped tie rod, the fixed anti-detachment block is inserted into the groove, which facilitates the quick fixation of the tool body in the fixed tool holder. This structure has the effect of preventing the tool body from detaching in the fixed tool holder.

[0004] However, in the above solution, the fixed anti-detachment block is connected to the groove by a T-shaped tie rod driven by a spring. However, due to the gap between the tool body and the inner wall of the fixed mounting groove, the tool body will cause the fixed anti-detachment block to move slightly during use, resulting in unstable connection and affecting machining accuracy. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a milling machine tool with an anti-detachment structure.

[0006] The technical solution of this utility model is: a milling machine tool with an anti-detachment structure, including a tool holder, a tool body, and a bolt;

[0007] A mounting groove is provided at the bottom center of the tool holder;

[0008] The blade body is set inside the mounting slot of the tool holder and is fitted and connected to the inner wall of the mounting slot of the tool holder. The outer circular surface of the top of the blade body is provided with multiple connecting blocks at equal angles to limit the rotation of the blade body in the mounting slot of the tool holder during use.

[0009] The number of bolts is at least one, and the bolt is located on the side of the tool holder with its end extending through the tool holder into the mounting groove of the tool holder to connect with the tool body.

[0010] Preferably, the tool holder has multiple sliding grooves inside the mounting groove. The length of the sliding groove is the same as the depth of the tool holder's mounting groove, and the width of the sliding groove is adapted to the width of the connecting block. The sliding groove and the connecting block are arranged in a one-to-one correspondence.

[0011] Preferably, a limiting groove is provided inside the mounting groove of the tool holder and on the side of multiple sliding grooves, and the limiting groove is arc-shaped.

[0012] Preferably, the limiting groove is connected to the sliding groove, and when the connecting block and the tool holder are installed together, the connecting block is accommodated in the limiting groove.

[0013] Preferably, a locking block is provided at the top of the inner side of the mounting slot of the tool holder, and a fixing slot is provided at the top of the tool body. When the tool body and the tool holder are installed together, the locking block is accommodated in the fixing slot.

[0014] Preferably, the locking block includes a connecting post and a limiting block;

[0015] The connecting column is installed at the top of the mounting slot inside the tool holder and inserted into the fixing slot;

[0016] There are multiple limiting blocks, which are arranged at equal angles on the outer side of the bottom of the connecting column and located on the inner bottom of the fixing groove, connecting with the fixing groove.

[0017] Preferably, the top side of the cutter body is provided with a threaded groove, and the side of the cutter holder is provided with a through hole, through which the bolt is inserted into the threaded groove.

[0018] Preferably, a connecting groove is provided on the side of the tool holder and at the end of the through hole, and a spring is sleeved on the outside of the bolt and inside the connecting groove.

[0019] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0020] This utility model uses a blade body to drive a connecting block to be inserted into the mounting groove of the blade holder, so that the blade body is in close contact with the inner wall of the mounting groove of the blade holder. The blade body is rotated to accommodate the connecting block in the limiting groove, so that the inner wall of the limiting groove supports and limits the connecting block. At the same time, a bolt is inserted through the blade holder and into the threaded groove to fix the blade body in the blade holder, forming a multi-layered stable structure and improving structural stability. Attached Figure Description

[0021] Figure 1 This is a perspective view of one embodiment of the present invention.

[0022] Figure 2 This is an exploded view of the connection structure between the tool holder and the tool body in one embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the inner structure of the mounting groove of the tool holder in one embodiment of the present invention.

[0024] Figure 4 An exploded view of the connection structure between the locking block and the blade body in one embodiment of this utility model.

[0025] Figure 5This is a cross-sectional schematic diagram of the tool holder structure in one embodiment of the present invention.

[0026] Reference numerals: 1. Tool holder; 2. Tool body; 3. Bolt; 4. Connecting block; 5. Threaded groove; 6. Sliding groove; 7. Limiting groove; 8. Connecting column; 9. Limiting block; 10. Fixing groove; 11. Spring; 12. Connecting groove; 13. Through hole. Detailed Implementation

[0027] Example 1

[0028] like Figure 1-5 As shown, the present invention proposes a milling cutter with an anti-detachment structure, which includes a tool holder 1, a tool body 2, and a bolt 3;

[0029] A mounting groove is provided at the bottom center of the tool holder 1;

[0030] The blade body 2 is set inside the mounting slot of the tool holder 1 and is attached to the inner wall of the mounting slot of the tool holder 1. The outer circular surface of the top of the blade body 2 is provided with multiple connecting blocks 4 at equal angles to limit the rotation of the blade body 2 in the mounting slot of the tool holder 1 during use.

[0031] The number of bolts 3 is at least one. Bolt 3 is set on the side of the tool holder 1 and its end extends through the tool holder 1 to the mounting groove of the tool holder 1 and connects with the tool body 2. It is used to limit the rotation of the tool body 2 in the tool holder 1 during use and to support the tool body 2 in the tool holder 1, so that the tool body 2 is fixed in the mounting groove of the tool holder 1, effectively preventing the tool body 2 from falling off during high-speed operation.

[0032] In an optional embodiment, a plurality of sliding grooves 6 are provided inside the mounting groove of the tool holder 1. The length of the sliding groove 6 is the same as the depth of the mounting groove of the tool holder 1, and the width of the sliding groove 6 is adapted to the width of the connecting block 4. The sliding grooves 6 and the connecting blocks 4 are arranged in a one-to-one correspondence. This is used to limit the position of the connecting blocks 4 through the sliding grooves 6 during use. When the tool body 2 drives the connecting block 4 to be inserted into the mounting groove of the tool holder 1, the connecting block 4 is connected to the inner wall of the sliding groove 6, which increases the connection area between the tool holder 1 and the tool body 2, further improving the reaction force between the tool body 2 and the tool holder 1, thereby ensuring the stability of the tool body 2 in the tool holder 1.

[0033] In this embodiment, the connecting block 4 is inserted into the mounting slot of the tool holder 1 by the tool body 2, and the connecting block 4 is tightly fitted with the inner wall of the slide groove 6. At the same time, the end of the bolt 3 extends through the tool holder 1 into the mounting slot of the tool holder 1 and connects with the tool body 2, so that the bolt 3 fixes the tool body 2 in the mounting slot of the tool holder 1 and limits the rotation of the tool body 2. At the same time, the tight fit between the connecting block 4 and the inner wall of the slide groove 6 further enhances the force between the tool body 2 and the tool holder 1, forming a multi-layered stable structure, improving structural stability. And because the tool body 2 is fitted and connected to the inner wall of the mounting slot of the tool holder 1, the tool body 2 can maintain the stability of the overall tool structure even when it is subjected to severe vibration during use, effectively extending its service life and improving machining accuracy.

[0034] Example 2

[0035] like Figure 1-2 As shown, the present invention proposes a milling machine cutter with an anti-detachment structure. The difference between this embodiment and the first embodiment is that a limiting groove 7 is provided on the inner side of the mounting groove of the tool holder 1 and on the side of the multiple sliding grooves 6. The limiting groove 7 is arc-shaped and is used to move the connecting block 4 from the sliding groove 6 into the limiting groove 7 when the tool body 2 drives the connecting block 4 to rotate inside the mounting groove of the tool holder 1.

[0036] In an optional embodiment, the limiting groove 7 is connected to the sliding groove 6. When the connecting block 4 and the tool holder 1 are installed together, the connecting block 4 is accommodated in the limiting groove 7. This allows the connecting block 4 to move from the sliding groove 6 into the limiting groove 7 during use, so that the inner wall of the limiting groove 7 is in close contact with the side and upper and lower end faces of the connecting block 4, and the position of the connecting block 4 is limited. When the tool holder 1 drives the tool body 2 to rotate, the tool body 2 has a reaction force through the cooperation between the connecting block 4 and the inner wall of the limiting groove 7, so that the tool body 2 performs milling work. At the same time, the inner bottom end of the limiting groove 7 supports the connecting block 4 to prevent the connecting block 4 from falling off.

[0037] In this embodiment, by adding a limiting groove 7 inside the mounting groove of the tool holder 1 and making the connecting block 4 rotate in the sliding groove 6 into the limiting groove 7, the connecting block 4 is made to fit against the inner wall of the limiting groove 7, thus limiting the unidirectional rotation of the connecting block 4 and supporting the tool body 2, ensuring that the tool body 2 does not shift during high-speed operation, further improving the stability of the tool body 2 and extending the tool's service life.

[0038] Example 3

[0039] like Figure 3 and Figure 5As shown, the present invention proposes a milling machine tool with an anti-detachment structure. The difference between this embodiment and the first embodiment is that a locking block is provided at the top of the inner side of the mounting groove of the tool holder 1, and a fixing groove 10 is provided at the top of the tool body 2. When the tool body 2 and the tool holder 1 are installed together, the locking block is accommodated in the fixing groove 10.

[0040] In an optional embodiment, the card block includes a connecting post 8 and a limiting block 9;

[0041] The connecting column 8 is installed at the top of the mounting slot inside the tool holder 1 and inserted into the fixing slot 10;

[0042] There are multiple limit blocks 9, which are arranged at equal angles on the outer side of the bottom end of the connecting column 8 and located on the inner bottom end of the fixing groove 10 and connected to the fixing groove 10.

[0043] In this embodiment, when the cutter body 2 is inserted into the mounting groove of the tool holder 1 and connected to the bottom end of the mounting groove, the connecting column 8 drives the limiting block 9 to be inserted into the inner side of the fixing groove 10. When the cutter body 2 drives the connecting block 4 to move from the sliding groove 6 to the limiting groove 7, the limiting block 9 moves relative to the cutter body 2 in the inner side of the fixing groove 10. The cooperation between the limiting block 9 and the fixing groove 10 limits the rotation of the top end of the cutter body 2 and supports the cutter body 2, further improving the overall stability of the tool, ensuring that no displacement occurs during high-speed operation, extending the service life, and optimizing the milling effect.

[0044] Example 4

[0045] like Figure 5 As shown, the present invention proposes a milling machine tool with an anti-detachment structure. The difference between this embodiment and the first embodiment is that the top side of the tool body 2 is provided with a threaded groove 5, and the side of the tool holder 1 is provided with a through hole 13. The bolt 3 passes through the through hole 13 and is inserted into the threaded groove 5.

[0046] In an optional embodiment, a connecting groove 12 is provided on the side of the tool holder 1 and at the end of the through hole 13, and a spring 11 is sleeved on the outside of the bolt 3 and inside the connecting groove 12.

[0047] In this embodiment, the bolt 3 is inserted into the threaded groove 5 on the outside of the tool holder 1 through the cooperation of the threaded groove 5 and the through hole 13, and the tool body 2 is fixed in the mounting groove of the tool holder 1. At the same time, the bolt 3 compresses the spring 11 inside the connecting groove 12, and when the end of the bolt 3 is separated from the threaded groove 5, the spring 11 rebounds, leaving a gap between the end of the bolt 3 and the threaded groove 5, making it easier to separate the tool holder 1 from the tool body 2.

[0048] In this invention, the blade body 2 is inserted into the mounting groove of the tool holder 1 and is fitted against the inner wall of the mounting groove. The blade body 2 drives the fixing groove 10 to wrap around the outside of the connecting post 8 and the limiting block 9. The blade body 2 drives the connecting block 4 to be installed inside the mounting groove of the tool holder 1 through the sliding groove 6. At the same time, rotating the blade body 2 causes the connecting block 4 to rotate inside the sliding groove 6 into the limiting groove 7, and the connecting block 4 is fitted against the inner wall of the limiting groove 7. This limits the unidirectional rotation of the connecting block 4 and supports the connecting block 4. The limiting block 9 moves relative to the blade body 2 inside the fixing groove 10, so that the connecting post 8 and the limiting block 9 are fitted against each other. The engagement of the positioning block 9 restricts and supports the rotation of the top of the cutter body 2. Simultaneously, the rotation of the cutter body 2 places the threaded groove 5 and the through hole 13 coaxially, and moves the bolt 3 in the through hole 13 toward the mounting groove of the cutter holder 1, so that the end of the bolt 3 is inserted into the threaded groove 5. The bolt 3 fixes the cutter body 2 in the mounting groove of the cutter holder 1, forming a multi-layered stable structure, improving structural stability. When replacing the cutter body 2, the bolt 3 is separated from the threaded groove 5, so that the elastic force of the spring 11 creates a gap between the end of the bolt 3 and the threaded groove 5 in the through hole 13. The cutter body 2 is then reversed, and the cutter body 2 can be easily removed, making the disassembly and replacement of the cutter body 2 more convenient.

[0049] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A milling cutter with an anti-detachment structure, characterized in that, Includes a tool holder (1), a tool body (2), and bolts (3); A mounting groove is provided at the bottom center of the tool holder (1); The blade (2) is set inside the mounting slot of the tool holder (1) and is attached to the inner wall of the mounting slot of the tool holder (1). The outer circular surface of the top of the blade (2) is provided with multiple connecting blocks (4) at equal angles to limit the rotation of the blade (2) in the mounting slot of the tool holder (1) during use. The number of bolts (3) is at least one. The bolts (3) are set on the side of the tool holder (1) and the end extends through the tool holder (1) to the mounting groove of the tool holder (1) and is connected to the tool body (2).

2. A milling cutter with an anti-detachment structure according to claim 1, characterized in that, Multiple sliding grooves (6) are provided inside the mounting groove of the tool holder (1). The length of the sliding groove (6) is the same as the depth of the mounting groove of the tool holder (1). The width of the sliding groove (6) is adapted to the width of the connecting block (4), and the sliding groove (6) and the connecting block (4) are arranged in a one-to-one correspondence.

3. A milling cutter with an anti-detachment structure according to claim 2, characterized in that, Limiting grooves (7) are provided on the inner side of the mounting groove of the tool holder (1) and on the side of multiple sliding grooves (6). The limiting grooves (7) are arc-shaped.

4. A milling cutter with an anti-detachment structure according to claim 3, characterized in that, The limiting groove (7) is connected to the sliding groove (6). When the connecting block (4) and the tool holder (1) are installed together, the connecting block (4) is accommodated in the limiting groove (7).

5. A milling cutter with an anti-detachment structure according to claim 1, characterized in that, A locking block is provided at the top of the mounting slot inside the tool holder (1), and a fixing slot (10) is provided at the top of the tool body (2). When the tool body (2) and the tool holder (1) are installed together, the locking block is accommodated in the fixing slot (10).

6. A milling cutter with an anti-detachment structure according to claim 5, characterized in that, The card block includes a connecting post (8) and a limiting block (9); The connecting column (8) is installed on the top of the mounting groove inside the tool holder (1) and inserted into the fixing groove (10); There are multiple limiting blocks (9), which are arranged at equal angles on the outer side of the bottom end of the connecting column (8) and on the inner bottom end of the fixing groove (10) and connected to the fixing groove (10).

7. A milling cutter with an anti-detachment structure according to claim 1, characterized in that, The top side of the blade body (2) is provided with a threaded groove (5), and the side of the tool holder (1) is provided with a through hole (13). The bolt (3) passes through the through hole (13) and is inserted into the threaded groove (5).

8. A milling cutter with an anti-detachment structure according to claim 7, characterized in that, A connecting groove (12) is provided on the side of the tool holder (1) and at the end of the through hole (13), and a spring (11) is sleeved on the outside of the bolt (3) and inside the connecting groove (12).

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