A tool bar mechanism of a numerical control machine tool

Abstract

The utility model discloses a tool bar mechanism of numerical control machine tool, including tool bar, the lower extreme of tool bar is provided with blade mounting tool rest, the surface of blade mounting tool rest is connected with cutting blade through locking screw fixed connection in the surface of blade mounting tool rest, the inside surface of blade mounting tool rest is provided with male slide groove, the inside surface sliding connection of male slide groove department of blade mounting tool rest has spring and male positioning clamping block, the outer surface of male positioning clamping block is extruded and supported on the upper surface of cutting blade, the surface of male positioning clamping block department of blade mounting tool rest is provided with recess, and it is supported and is connected through positioning recess and is inserted into cutting blade structure, and after locking screw fixed locking, external support and connect through male positioning clamping block, through cutting blade and positioning recess structure, support and connect after inserting, and male positioning clamping block support and connect, external support force is big, and its support is stable.

Description

Technical Field

[0001] This utility model relates to the field of tool holder mechanisms for CNC machine tools, and more specifically, to a tool holder mechanism for a CNC machine tool. Background Technology

[0002] A CNC tool holder is a component mounted on a CNC tool shank, primarily used to connect the tool shank to the tool head (or insert), serving to transmit torque and support the tool. Its design typically features a central connection structure, with one end connected to the tool shank and the other end housing the tool head, allowing for quick tool changes via a standardized interface. Traditional cutting tools are usually connected and fixed with a single screw. However, in actual use, due to factors such as vibration, the connection between the tool and the tool holder is prone to loosening. This loosening can cause the tool to shift or wobble, thus affecting the cutting quality and machining accuracy. Therefore, in order to improve the performance of the tool, a machine tool holder tool mounting structure is needed. In existing technologies, such as the present invention disclosed in patent announcement number CN221603274U, a machine tool tool holder mounting structure is provided, including a tool holder and a tool connected to the machine tool. A tool groove for tool mounting is provided on one side of the tool holder, and a mounting component is provided in the middle of the tool groove. The mounting component is used to connect the tool to the tool groove, completing the connection between the tool and the tool holder. This invention, through the installation component including a mounting rod, a insertion slot, and a bolt, achieves a stable connection between the tool and the tool holder, effectively avoiding loosening problems caused by vibration and other factors. At the same time, the stable tool connection ensures that the tool position will not shift or wobble, thereby guaranteeing cutting quality and machining accuracy. It can effectively improve the tool's performance, ensure machining quality and accuracy, and make the machining process more stable and reliable. In the aforementioned patent, the installation components include a mounting rod, a plug groove, and a bolt, which achieve a stable connection between the tool and the tool holder, effectively avoiding loosening caused by factors such as vibration. However, the elastic fastening structure has an unstable support around the center, resulting in an insufficiently secure installation. Summary of the Invention

[0003] To address the problems existing in the prior art, the purpose of this utility model is to provide a tool holder mechanism for a CNC machine tool. The cutting blade structure is inserted into the positioning groove, and after the locking screw is tightened, it is supported and engaged externally by a convex positioning block. Through the cutting blade and the positioning groove structure, the support is stable after insertion. The convex positioning block provides strong external support and stable support.

[0004] To solve the above problems, the present invention adopts the following technical solution.

[0005] A tool holder mechanism for a CNC machine tool includes a tool holder with a tool insert mounting holder at its lower end. A cutting insert is snapped onto the surface of the tool insert mounting holder, and the cutting insert is fixedly connected to the surface of the tool insert mounting holder by a locking screw. A convex groove is provided on the inner surface of the tool insert mounting holder, and a spring and a convex positioning block are slidably connected to the inner surface of the convex groove. The outer surface of the convex positioning block presses against the upper surface of the cutting insert. A notch is provided on the surface of the convex positioning block of the tool insert mounting holder, through which the cutting insert is snapped into the structure. After the locking screw is tightened, the external support and snapping are achieved by the convex positioning block. Through the cutting insert and the positioning groove structure, the structure provides stable support after snapping in. The convex positioning block provides strong external support and stable support.

[0006] Furthermore, the surface of the blade mounting holder is provided with a positioning protrusion, and the surface of the cutting blade is provided with a positioning groove. The outer surface of the positioning protrusion is slidably engaged with the inner surface of the positioning groove on one side of the cutting blade.

[0007] Furthermore, the surface of the blade mounting holder is provided with a positioning groove, and the outer surface of the cutting blade is tightly engaged with the inner surface of the positioning groove of the blade mounting holder.

[0008] Furthermore, the convex positioning blocks of the blade mounting holder are distributed on the inner end surfaces on both sides.

[0009] Furthermore, the lower surface of the convex positioning block is tightly fitted to the outer surface of the cutting blade.

[0010] Furthermore, the outer surface of the convex positioning block is tightly fitted to the inner surface of the convex groove of the blade mounting holder.

[0011] Furthermore, the tool holder and the blade mounting base are an integral structure, and both are made of high-manganese spring steel.

[0012] Compared with existing technologies, the advantages of this utility model are: (1) The cutting blade structure is inserted through the positioning groove. After the locking screw is locked, the external support is secured by the convex positioning block. The cutting blade and the positioning groove structure are stably supported after insertion. The convex positioning block provides strong external support and stable support. Attached Figure Description

[0013] Figure 1 This is a first schematic diagram of the overall structure of this utility model; Figure 2 This is a second schematic diagram of the overall structure of this utility model; Figure 3This is a third schematic diagram of the overall structure of this utility model; Figure 4 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 5 This is an enlarged schematic diagram of point A of this utility model.

[0014] Explanation of the labels in the diagram: 1. Tool holder, 2. Tool holder for insert mounting, 3. Cutting insert, 4. Locking screw, 5. Positioning protrusion, 6. Convex groove, 7. Spring, 8. Convex positioning block, 9. Notch. Detailed Implementation

[0015] 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.

[0016] Example 1 Please see Figure 1-5 A tool holder mechanism for a CNC machine tool includes a tool holder 1, with a tool holder 2 at the lower end of the tool holder 1. A cutting blade 3 is snapped onto the surface of the tool holder 2, and the cutting blade 3 is fixedly connected to the surface of the tool holder 2 by a locking screw 4. A convex groove 6 is provided on the inner surface of the tool holder 2, and a spring 7 and a convex positioning block 8 are slidably connected to the inner surface of the convex groove 6 of the tool holder 2. The outer surface of the convex positioning block 8 presses and supports the upper surface of the cutting blade 3, and a notch 9 is provided on the surface of the convex positioning block 8 of the tool holder 2. The cutting blade is snapped into the positioning groove structure, and after being fixed and locked by the locking screw, it is supported and snapped in the outside by the convex positioning block. Through the cutting blade and the positioning groove structure, the support is stable after snapping in, and the convex positioning block provides a large external support force, resulting in stable support. The blade mounting holder 2 has a positioning protrusion 5 on its surface and a positioning groove on its surface. The outer surface of the positioning protrusion 5 slides and engages with the inner surface of the positioning groove on one side of the cutting blade 3. It can be snapped in for support. After the cutting blade 3 is snapped in for installation, the positioning protrusion 5 can be snapped into the positioning groove for positioning. The cutting blade 3 cannot slip off at the vertical position, and the snapping installation is stable. The surface of the blade mounting holder 2 is provided with a positioning groove, and the outer surface of the cutting blade 3 is tightly engaged with the inner surface of the positioning groove of the blade mounting holder 2; this facilitates the installation of the cutting blade 3 in the blade mounting holder 2, and the cutting blade 3 is easy to assemble with the blade mounting holder 2, its shape matches, and the assembly and installation are stable. The convex positioning blocks 8 of the blade mounting holder 2 are distributed on the inner end surfaces on both sides; when the cutting blade 3 is inserted into the blade mounting holder 2, the convex positioning blocks 8 can be used to block and position the cutting blade 3 on both sides. When the locking screw 4 is loose, the cutting blade 3 will not slide outward, but will be blocked by the convex positioning blocks 8, and the cutting blade 3 will not be ejected. The lower surface of the convex positioning block 8 is tightly fitted to the outer surface of the cutting blade 3; after installation, the cutting blade 3 is tightly pressed and blocked by the convex positioning block 8, providing stable support and preventing it from shaking. The outer surface of the convex positioning block 8 is tightly fitted to the inner surface of the convex groove 6 of the insert mounting holder 2; the convex positioning block 8 is slidably connected within the convex groove 6 and can slide within the convex groove 6, allowing for sliding extension and retraction; the tool holder 1 and the insert mounting holder 2 are an integral structure, and both are made of high-manganese spring steel; the material structure is robust, and a precision forging process is used to ensure uniform material density and structural stability; through a three-stage heat treatment process of annealing, quenching, and tempering, the hardness can reach HRC 58-62, combining resistance to deformation and service life; the machining center uses a heat-treated machining technology (secondary machining after heat treatment), avoiding deformation problems caused by traditional processes; During installation, a blade mounting holder 2 is provided at the lower end of the tool holder 1. A cutting blade 3 is snapped onto the surface of the blade mounting holder 2. The cutting blade 3 is fixedly connected to the surface of the blade mounting holder 2 by a locking screw 4 and is locked in place by the locking screw 4. The cutting blade 3 is firmly fixed, and the surface of the blade mounting holder 2 is provided with a positioning groove. The outer surface of the cutting blade 3 is tightly snapped onto the inner surface of the positioning groove of the blade mounting holder 2. This facilitates the installation of the cutting blade 3 in the blade mounting holder 2. The cutting blade 3 and the blade mounting holder 2 are easy to assemble, their shapes match, and the assembly and installation are stable. Furthermore, the inner surface of the blade mounting holder 2 is provided with a convex groove 6. A spring 7 and a convex positioning block 8 are slidably connected to the inner surface of the convex groove 6 of the blade mounting holder 2. The outer surface of the convex positioning block 8 presses and supports the upper surface of the cutting blade 3. The convex positioning blocks 8 of the blade mounting holder 2 are distributed on the inner end surfaces on both sides. When the cutting blade 3 is inserted into the blade mounting holder 2, the convex positioning blocks 8 can be used to block and position the cutting blade 3 on both sides. When the locking screw 4 is loosened, the cutting blade... The blade 3 will not slide outwards and can be blocked by the convex positioning block 8, preventing the cutting blade 3 from popping out. Furthermore, the surface of the convex positioning block 8 on the blade mounting holder 2 is provided with a notch 9. During disassembly, after the locking screw 4 is removed, pressing the convex positioning block 8 will retract and slide it into the notch 9, allowing it to detach from the surface of the cutting blade 3. The cutting blade 3 can then be removed by sliding it upwards. The cutting blade 3 cannot be disassembled without pressing the convex positioning block 8. The structure is stable and secure, and the loosening of the locking screw 4 will not affect its use. Furthermore, a positioning protrusion 5 is provided on the surface of the blade mounting holder 2, and a positioning groove is provided on the surface of the cutting blade 3. After the cutting blade 3 is installed, it can slide along the outer surface of the positioning protrusion 5 and be engaged with the inner surface of the positioning groove on one side of the cutting blade 3. The positioning protrusion 5 can be engaged for support. After the cutting blade 3 is engaged and installed, the positioning protrusion 5 can be engaged and positioned in the positioning groove. The cutting blade 3 cannot slip off at the vertical position, and the engagement and installation are stable, thereby improving the external support force of the cutting blade 3.

Claims

1. A tool holder mechanism for a CNC machine tool, comprising a tool holder (1), characterized in that: The lower end of the tool holder (1) is provided with a blade mounting holder (2). A cutting blade (3) is snapped onto the surface of the blade mounting holder (2). The cutting blade (3) is fixedly connected to the surface of the blade mounting holder (2) by a locking screw (4). A convex groove (6) is provided on the inner surface of the blade mounting holder (2). A spring (7) and a convex positioning block (8) are slidably connected to the inner surface of the convex groove (6) of the blade mounting holder (2). The outer surface of the convex positioning block (8) presses and supports the upper surface of the cutting blade (3). A notch (9) is provided on the surface of the convex positioning block (8) of the blade mounting holder (2).

2. The tool holder mechanism of a CNC machine tool according to claim 1, characterized in that: The surface of the blade mounting holder (2) is provided with a positioning protrusion (5), and the surface of the cutting blade (3) is provided with a positioning groove. The outer surface of the positioning protrusion (5) is slidably engaged with the inner surface of the positioning groove on one side of the cutting blade (3).

3. The tool holder mechanism of a CNC machine tool according to claim 1, characterized in that: The blade mounting holder (2) has a positioning groove on its surface, and the outer surface of its cutting blade (3) is tightly engaged with the inner surface of the positioning groove of the blade mounting holder (2).

4. The tool holder mechanism of a CNC machine tool according to claim 1, characterized in that: The convex positioning blocks (8) of the blade mounting holder (2) are distributed on the inner end surfaces on both sides.

5. The tool holder mechanism of a CNC machine tool according to claim 1, characterized in that: The lower surface of the convex positioning block (8) is tightly attached to the outer surface of the cutting blade (3).

6. The tool holder mechanism of a CNC machine tool according to claim 1, characterized in that: The outer surface of the convex positioning block (8) is closely attached to the inner surface of the convex groove (6) of the blade mounting holder (2).

7. The tool holder mechanism of a CNC machine tool according to claim 1, characterized in that: The tool holder (1) and the blade mounting holder (2) are an integral structure, and the tool holder (1) and the blade mounting holder (2) are made of high manganese spring steel.

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