Shockproof boring and milling combined cutter

Abstract

The utility model relates to metal cutting tool technical field especially relates to a shockproof boring and milling combined cutter, including main part and setting on the cutter of main part, the positioning block of integral connection is clamped with cutter on main part, is provided with the damping structure for converting vibration into heat energy to prevent cutter vibration on main part. The utility model discloses through the linkage cooperation of moving ring frame, connecting block two, fixed plate, connecting block one, moving block and spring, first realizes the quick preposition of positioning block, then through the secondary locking of L type fixed rod and bolt, forms double fixed structure, effectively avoids the vibration deviation of cutter in the boring and milling process because of loosening, is helpful to the promotion processing accuracy, through the transmission of vibration to the damping sleeve of cutter through positioning block, utilizes the relative movement of the rigid sheet of damping layer two sides, drives the shear deformation of damping layer, converts vibration energy into heat energy, directly suppresses vibration from the vibration source, realizes damping while guaranteeing cutter rigidity.

Description

Technical Field

[0001] This utility model relates to the field of metal cutting tool technology, and in particular to a vibration-damping boring and milling composite tool. Background Technology

[0002] A boring-milling composite tool is a tool that integrates boring and milling functions into one, and can complete hole machining and milling of planes and contours of workpieces on the same machine.

[0003] Under current conditions, a common CNC tool vibration damping mechanism is disclosed in CN219403481U, which includes a connecting bolt with an internal buffer structure fixedly connected to its bottom end. This mechanism uses both internal and external buffer structures to dampen and secure the tool holder. However, this device relies on a connecting plug inserted into a slot and a buffer spring rod pushing an abutment plate for lateral clamping. The tool is only clamped by spring force, which can easily cause axial movement or circumferential micro-rotation during high-speed, high-load cutting, affecting machining accuracy. Furthermore, the device uses a return spring, buffer spring rod, and soft silicone grease pad for elastic vibration damping, which may cause micro-displacement of the tool under cutting force, affecting dimensional accuracy and geometric tolerances. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing boring and milling composite tools are prone to vibration or micro-rotation during high-speed, heavy-load cutting, which affects machining accuracy. Therefore, this invention proposes a vibration-resistant boring and milling composite tool.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A vibration-damping boring and milling composite tool includes a main body and a tool disposed on the main body. A positioning block integrally connected to the tool is snapped onto the main body. A vibration damping structure for converting vibration into heat energy to prevent tool vibration is provided on the main body. The vibration damping structure includes a vibration damping sleeve wrapped around the surface of the positioning block and used to offset the kinetic energy of tool vibration. A fixing mechanism for moving from top to bottom to fix the positioning block is provided on the main body. The fixing mechanism includes a fixing plate that is slidably sleeved in the main body and moves against the positioning block.

[0006] Preferably, the vibration damping sleeve includes an adhesive layer, a vibration damping layer, and a thermally conductive layer. The adhesive layer is a thin metal shell, the vibration damping layer is a silicone-based adhesive film with viscoelastic damping properties, and the thermally conductive layer is made of copper foil with a high thermal conductivity.

[0007] Preferably, the adhesive layer, the vibration damping layer, and the thermally conductive layer are arranged sequentially from the outside to the inside. Rigid sheets for tool vibration damping are attached to both sides of the vibration damping layer. The vibration damping layer and the two rigid sheets undergo shear deformation to convert vibration into heat energy to prevent tool vibration.

[0008] Preferably, the adhesive layer surface has a groove for reinforcing the connection between the positioning block and the main body.

[0009] Preferably, the fixing mechanism further includes a movable block slidably sleeved within the main body, a spring for initial positioning of the fixing plate is welded between the movable block and the main body, and a connecting block integrally connected to the fixing plate is fixedly installed on the movable block; A movable ring frame is slidably sleeved on the main body. Connecting blocks two, which are integrally connected to the movable ring frame, are fixedly installed on both sides of the fixed plate. A fixing rod for re-fixing the fixed plate is movably installed on the movable ring frame through a pin.

[0010] Preferably, the fixing rod has an L-shaped structure, and the main body is threaded with bolts for fixing the fixing rod.

[0011] Compared with the prior art, the present invention has the following advantages: 1. This utility model achieves rapid pre-positioning of the positioning block by means of the linkage between the movable ring frame, connecting block two, fixing plate, connecting block one, movable block and spring. Then, the L-shaped fixing rod and bolt are used for secondary locking to form a double fixing structure, which effectively avoids vibration and displacement of the tool due to loosening during boring and milling, and helps to improve machining accuracy.

[0012] 2. This utility model transmits vibration to the damping sleeve through the positioning block of the cutting tool. The relative movement of the rigid thin plates on both sides of the damping layer causes the damping layer to undergo shear deformation, converting the vibration energy into heat energy. This directly suppresses the vibration from the source, achieving vibration reduction while ensuring the rigidity of the cutting tool, effectively reducing tool vibration and ensuring the stability of the cutting process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a vibration-damping composite boring and milling tool proposed in this utility model; Figure 2 This is a cross-sectional view of the positioning block of a vibration-damping composite tool proposed in this utility model; Figure 3 This is a cross-sectional view of the main body of a vibration-damping composite boring and milling tool proposed in this utility model; Figure 4 This is a schematic diagram of a vibration damping sleeve for a composite boring and milling tool proposed in this utility model; Figure 5 This is a cross-sectional view of a vibration damping sleeve for a vibration-damping composite tool proposed in this utility model.

[0014] In the diagram: 1. Main body; 2. Positioning block; 3. Cutting tool; 4. Vibration damping sleeve; 41. Adhesive layer; 42. Vibration damping layer; 43. Rigid sheet; 44. Heat-conducting layer; 5. Fixing plate; 6. Moving block; 7. Spring; 8. Connecting block one; 9. Connecting block two; 10. Moving ring frame; 11. Fixing rod. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figures 1-5 A vibration-damping boring and milling composite tool includes a main body 1 and a tool 3 disposed on the main body 1. A positioning block 2 integrally connected to the tool 3 is snapped onto the main body 1. A snap-fit ​​groove adapted to the positioning block 2 is provided on the main body 1. The integral molding structure of the positioning block 2 and the tool 3 ensures the continuity of force transmission and avoids loosening at the connection point, which would cause additional vibration.

[0017] The main body 1 is provided with a vibration damping structure to convert vibration into heat energy to prevent the tool 3 from vibrating. The vibration damping structure suppresses vibration from the vibration source through energy conversion, ensuring the rigidity of the tool 3 while reducing the vibration of the tool 3, and ensuring the smoothness of the cutting process. The vibration damping structure includes a vibration damping sleeve 4 wrapped around the surface of the positioning block 2 and used to offset the vibration kinetic energy of the tool 3. The full fit design between the vibration damping sleeve 4 and the positioning block 2 can ensure that the vibration energy is fully transmitted to the vibration damping structure, which helps to improve the vibration damping effect.

[0018] The vibration damping sleeve 4 includes an adhesive layer 41, a vibration damping layer 42, and a heat-conducting layer 44. The adhesive layer 41 is a thin metal shell. The metal material has good structural rigidity, which can ensure the firm connection between the vibration damping sleeve 4 and the positioning block 2 and the main body 1.

[0019] The adhesive layer 41 has a groove on its surface to strengthen the connection between the positioning block 2 and the main body 1. The groove can increase the contact area of ​​the adhesive layer 41 and the main body 1, and at the same time enhance the friction of the connection between the two, preventing the vibration damping sleeve 4 from shaking synchronously with the positioning block 2, and further improving the connection stability.

[0020] The vibration damping layer 42 is made of a silicone-based film with viscoelastic damping properties. The silicone-based film has excellent damping energy dissipation capabilities and can absorb and dissipate vibration energy through its own deformation when subjected to vibration force.

[0021] The thermal conductive layer 44 is made of copper foil with a high thermal conductivity. Copper foil itself has excellent thermal conductivity and its thermal conductivity is much higher than that of conventional thermal conductive materials. It can quickly absorb the heat energy generated by the damping layer 42 and prevent the heat energy from accumulating inside the damping sleeve 4, thus affecting the damping effect.

[0022] The adhesive layer 41, the vibration damping layer 42, and the heat-conducting layer 44 are arranged sequentially from the outside to the inside. Each layer is fixed with a special adhesive to ensure a tight connection between the layers and to avoid gaps that could lead to poor vibration transmission or reduced energy conversion efficiency. Rigid sheets 43 for damping the tool 3 are attached to both sides of the vibration damping layer 42. The rigid sheets 43 are made of high-strength metal to ensure that they only move relative to each other under vibration without deforming themselves.

[0023] The vibration damping layer 42 and the two rigid sheets 43 shear deformation convert vibration into heat energy to prevent the tool 3 from vibrating. The guiding effect of the rigid sheets 43 makes the deformation of the vibration damping layer 42 more regular, which helps to improve the energy conversion efficiency.

[0024] The main body 1 is provided with a fixing mechanism for moving from top to bottom to fix the positioning block 2. The fixing mechanism ensures that the positioning block 2 is stably connected to the main body 1 through double fixing, and avoids the vibration and displacement of the tool 3.

[0025] The fixing mechanism includes a fixing plate 5 that is slidably sleeved inside the main body 1 and moves against the positioning block 2. The main body 1 has a sliding cavity adapted to the fixing plate 5. The fixing plate 5 can slide smoothly up and down along the sliding cavity. The surface of the fixing plate 5 is provided with anti-slip textures adapted to the surface of the positioning block 2, which enhances the friction when the fixing plate 5 contacts the positioning block 2 and helps to improve the fixing effect.

[0026] The fixing mechanism also includes a movable block 6 that is slidably sleeved in the main body 1. Guide blocks extending into the main body 1 are fixedly installed on both sides of the movable block 6. A guide groove adapted to the guide block is opened on the main body 1. The guide block and the guide groove cooperate to realize the smooth movement of the movable block 6.

[0027] A spring 7 for initial positioning of the fixing plate 5 is welded between the movable block 6 and the main body 1. The spring 7 is a high-strength compression spring, and its initial state is a naturally extended state. The welding connection method ensures that the two ends of the spring 7 are firmly connected to avoid falling off during the elastic reset process. A connecting block 8 that is integrally connected with the fixing plate 5 is fixedly installed on the movable block 6.

[0028] A movable ring frame 10 is slidably sleeved on the main body 1. The movable ring frame 10 is a ring structure, and its inner diameter is adapted to the outer diameter of the main body 1 to ensure that the movable ring frame 10 can slide smoothly along the axial direction of the main body 1. Connecting blocks 9 that are integrally connected with the movable ring frame 10 are fixedly installed on both sides of the fixed plate 5. A fixing rod 11 for re-fixing the fixed plate 5 is movably installed on the movable ring frame 10 through a pin.

[0029] The fixing rod 11 has an L-shaped structure. The bent part of the L-shaped fixing rod 11 can be precisely fitted with the surface of the main body 1, further improving the locking stability. The main body 1 is threaded with bolts for fixing the fixing rod 11. The main body 1 has threaded holes corresponding to the fitting position of the fixing rod 11. The tightening force of the bolts can firmly press the fixing rod 11 onto the surface of the main body 1, thereby achieving secondary positioning of the fixing plate 5 and forming a double fixing structure.

[0030] The functional principle of this utility model can be explained through the following operation methods: When the cutting tool 3 is lowered, the moving ring frame 10 is manually moved upward. The moving ring frame 10 drives the fixing plate 5 to move upward through the connecting block 2 9. The upward movement of the fixing plate 5 drives the connecting block 1 8 and the moving block 6 to move upward synchronously, and applies pressure to the spring 7, so that the positioning block 2 is inserted into the main body 1 accordingly. Release the moving ring frame 10, and the spring 7 elastically resets, causing the moving block 6 to move down. The moving block 6 moves the fixed plate 5 down through the connecting block 8, which initially limits the positioning block 2. Then, rotate the fixed rod 11 with the pin as the fulcrum until it is in contact with the surface of the main body 1. Tighten the bolts to limit the fixed plate 5 again, thus completing the stable installation of the tool 3. The vibration generated during the operation of the tool 3 is transmitted to the damping sleeve 4 through the positioning block 2. The rigid sheets 43 on both sides of the damping layer 42 in the damping sleeve 4 move relative to each other, causing the damping layer 42 to undergo shear deformation. The damping layer 42 converts vibration energy into heat energy through shear deformation. The heat energy is dissipated through the heat-conducting layer 44 of the damping sleeve 4, suppressing vibration from the vibration source in the form of energy conversion, ensuring the rigid connection of the tool 3 while reducing vibration.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vibration-damping boring and milling composite tool, comprising a main body (1) and a tool (3) disposed on the main body (1), characterized in that, The main body (1) is fitted with a positioning block (2) integrally connected to the cutting tool (3). The main body (1) is provided with a vibration damping structure for converting vibration into heat energy to prevent the cutting tool (3) from vibrating. The vibration damping structure includes a vibration damping sleeve (4) wrapped around the surface of the positioning block (2) and used to counteract the vibration kinetic energy of the cutting tool (3). The main body (1) is provided with a fixing mechanism for moving from top to bottom to fix the positioning block (2). The fixing mechanism includes a fixing plate (5) that is slidably sleeved in the main body (1) and moves against the positioning block (2).

2. The anti-vibration boring and milling composite tool according to claim 1, characterized in that, The vibration damping sleeve (4) includes an adhesive layer (41), a vibration damping layer (42), and a thermal conductive layer (44). The adhesive layer (41) is a thin metal shell, the vibration damping layer (42) is a silicone-based adhesive film with viscoelastic damping properties, and the thermal conductive layer (44) is made of copper foil with high thermal conductivity.

3. The anti-vibration boring and milling composite tool according to claim 2, characterized in that, The adhesive layer (41), the damping layer (42), and the heat-conducting layer (44) are arranged sequentially from the outside to the inside. The damping layer (42) has rigid sheets (43) attached to both sides for damping the tool (3). The damping layer (42) and the two rigid sheets (43) shear deformation convert the vibration into heat energy to prevent the tool (3) from vibrating.

4. The anti-vibration boring and milling composite tool according to claim 2, characterized in that, The adhesive layer (41) has a groove on its surface for reinforcing the connection between the positioning block (2) and the main body (1).

5. The anti-vibration boring and milling composite tool according to claim 1, characterized in that, The fixing mechanism also includes a movable block (6) that is slidably sleeved in the main body (1). A spring (7) for initial positioning of the fixing plate (5) is welded between the movable block (6) and the main body (1). A connecting block (8) that is integrally connected to the fixing plate (5) is fixedly installed on the movable block (6). The main body (1) is slidably fitted with a movable ring frame (10), and the fixed plate (5) is fixedly installed on both sides with connecting blocks two (9) integrally connected with the movable ring frame (10). The movable ring frame (10) is movably installed with a fixing rod (11) for re-fixing the fixed plate (5) through a pin shaft.

6. The anti-vibration boring and milling composite tool according to claim 5, characterized in that, The fixing rod (11) has an L-shaped structure, and the main body (1) is threaded with bolts for fixing the fixing rod (11).

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