Cutting tools with spiral grooves and vibration damping tapered shanks
By designing helical grooves on BT-type taper shank cutting tools and filling them with elastic damping material, the vibration problem during high-speed cutting was solved, achieving a high-rigidity and low-cost vibration reduction effect while maintaining the reliability and strength of the structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN HERLY CUTTING TOOL TECH CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-26
AI Technical Summary
BT-type taper shank cutting tools are prone to vibration during high-speed cutting, which affects machining accuracy and surface quality. Existing vibration-damping tools use an integral damping structure, which results in high manufacturing costs and affects rigidity.
The design incorporates a spiral grooved, vibration-damping tapered shank tool. The spiral groove is filled with elastic damping material, and the multi-head spiral structure disperses vibration energy. High-frequency vibration is absorbed through shear deformation. The design employs a rigid-flexible composite structure.
The tool achieves high rigidity and good vibration reduction performance, reducing manufacturing costs while maintaining structural reliability and original strength.
Smart Images
Figure CN224273340U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of BT-type taper shank cutting tools, specifically a taper shank cutting tool with a spiral groove for vibration reduction. Background Technology
[0002] A tool holder is a tool that connects a machine spindle to cutting tools and other accessory tools. The main standards include spindle models such as BT, SK, CAPTO, BBT, and HSK.
[0003] In the existing technology, BT type 7:24 BT type taper shank tools are prone to vibration during high-speed cutting, which affects machining accuracy and surface quality.
[0004] Furthermore, most existing vibration damping tools adopt an integral damping structure, which results in high manufacturing costs and affects rigidity. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a taper shank cutting tool with a spiral groove for vibration reduction. This solves the problem mentioned in the background art that BT-type 7:24BT-type taper shank cutting tools are prone to vibration during high-speed cutting, which affects machining accuracy and surface quality. Existing vibration-reducing cutting tools mostly adopt an integral damping structure, resulting in high manufacturing costs and affecting rigidity.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a taper shank cutting tool with helical grooves for vibration damping, comprising a flange and a BT-type taper shank.
[0007] The surface of the BT-type tapered shank is provided with a spiral groove, and the spiral groove is filled with an elastic damping material.
[0008] Preferably, the elastic damping material is vulcanized oil-resistant rubber or polyurethane elastomer.
[0009] Preferably, the elastic damping material is 0.05mm to 0.1mm lower than the cone surface of the BT-type cone shank.
[0010] Preferably, the spiral groove is a multi-head spiral structure and is arranged along the axial direction of the BT-type tapered shank, and the inner wall of the spiral groove is arc-shaped.
[0011] Preferably, the flange is connected to a BT-type tapered shank.
[0012] Preferably, the BT type tapered shank adopts a 7:24 taper standard.
[0013] This utility model provides a taper shank cutting tool with a spiral groove for vibration reduction, which has the following advantages:
[0014] This spiral grooved vibration-damping taper shank tool utilizes a multi-start spiral groove designed into the BT-type taper shank and filled with elastic damping material. The multi-start spiral groove disperses vibration energy in multiple directions, while the elastic damping material absorbs high-frequency vibrations through shear deformation. This "rigid-flexible composite" structural design resolves the contradiction between vibration suppression and structural strength in BT-type taper shank tools. Furthermore, it boasts high structural reliability and does not affect the original strength of the BT-type taper shank. This provides a BT-type taper shank tool that combines high rigidity, good vibration reduction performance, and low manufacturing cost. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a partial cross-sectional structural diagram of the present invention.
[0017] In the diagram: 1. BT type tapered shank; 2. Flange; 3. Spiral groove; 4. Elastic damping material. Detailed Implementation
[0018] 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.
[0019] Example 1: Refer to Figures 1-2 This utility model provides a taper shank cutting tool with a spiral groove for vibration reduction, including a flange 2 and a BT-type taper shank 1. The flange 2 is connected to the BT-type taper shank 1, and the BT-type taper shank 1 adopts a 7:24 taper standard. It is fully compatible with existing CNC machine tool spindle interfaces.
[0020] The surface of the BT-type tapered shank 1 is provided with a spiral groove 3. The spiral groove 3 adopts a multi-head spiral structure and is arranged along the axial direction of the BT-type tapered shank 1. In order to avoid stress concentration in the spiral groove 3, the inner wall of the spiral groove 3 is designed as an arc to reduce the stress concentration coefficient and facilitate the uniform dissipation of vibration energy.
[0021] The spiral groove 3 is filled with elastic damping material 4, which is vulcanized oil-resistant rubber or polyurethane elastomer. The vulcanized oil-resistant rubber can be nitrile rubber (NBR), and the polyurethane elastomer is polyurethane (PU). The recommended hardness range is 60-80 Shore A to balance vibration reduction and rigidity. The elastic damping material 4 is surface activated before filling and then cured at low temperature after filling.
[0022] The surface of the elastic damping material 4 is 0.05mm to 0.1mm lower than the cone surface of the BT type cone shank 1. In the specific processing, the elastic damping material 4 is filled into the spiral groove 3 and then precision ground so that the rubber layer is 0.05mm to 0.1mm lower than the cone surface, thereby maintaining the rigid contact of the metal cone surface and ensuring the reliability of torque transmission.
[0023] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0024] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0025] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A taper shank cutting tool with helical groove vibration damping, comprising a flange (2) and a BT-type taper shank (1), characterized in that: The surface of the BT-type tapered shank (1) is provided with a spiral groove (3), and the spiral groove (3) is filled with an elastic damping material (4).
2. The helically fluted, reduced vibration taper shank tool of claim 1 wherein: The elastic damping material (4) is vulcanized oil-resistant rubber or polyurethane elastomer.
3. The helically fluted, reduced vibration taper shank tool of Claim 1 wherein: The elastic damping material (4) is 0.05 mm to 0.1 mm lower than the cone surface of the BT type cone shank (1).
4. The helically fluted, reduced vibration taper shank tool of claim 1 wherein: The spiral groove (3) is a multi-head spiral structure and is arranged along the axial direction of the BT type cone shank (1). The inner wall of the spiral groove (3) is arc-shaped.
5. The helically fluted, reduced vibration taper shank tool of Claim 1 wherein: The flange (2) is connected to the BT type tapered shank (1).
6. The helically fluted, reduced vibration taper shank tool of Claim 1 wherein: The BT type tapered shank (1) adopts a 7:24 taper standard.