A self-positioning, shock-resistant locking tip for blades

Abstract

This utility model provides a self-positioning, vibration-resistant locking head for CNC machining tools. It includes a vibration-resistant tool holder, with a locking head body at one end. The locking head body has two symmetrically arranged open-end wrench-shaped flat sections on its exterior. The locking head body is made entirely of high-strength, tough alloy steel. Each end of the locking head body has two symmetrically arranged blade mounting slots, each containing a blade. This locking head facilitates the installation of blades into the mounting slots through its designed mounting mechanism, simplifying operation and adapting to the growing market demand for five-axis machine tool tools. It ensures more stable blade installation, preventing loosening due to vibration and increasing the cutting rigidity of the tool. The locking head body, made of high-strength, tough alloy steel, possesses high strength and vibration resistance, thereby enhancing the tool's vibration resistance.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining tool technology, specifically a self-positioning anti-vibration locking bit for inserts. Background Technology

[0002] In recent years, with the increasing popularity of five-axis machine tools in the domestic machining market, the market demand for supporting tool holders and cutting tools has also shown a "daily growth" trend, forming a clear demand orientation and providing a market foundation for targeted tool development. Because the parts machined by five-axis machine tools possess "complexity and unique characteristics," such as requiring the tool to be inserted into the hollowed-out parts of the part at a specific angle for cutting, stringent technical standards are imposed on the cutting tools used. On the one hand, the tools are required to have high precision to match the machining accuracy of complex parts and meet the needs of fine cutting; on the other hand, the tools are required to have strong vibration resistance to cope with stress fluctuations under special machining postures, ensure the stability of the machining process, and ultimately achieve the goal of high-quality part machining.

[0003] However, a statistical analysis of the usage of cutting tools for five-axis machine tools on the market reveals that current cutting tools still have significant limitations and are difficult to adapt to actual machining needs: ordinary cutting tools lack vibration resistance, directly resulting in rough surfaces on machined parts, failing to meet high-quality requirements; even if some cutting tools use vibration-resistant tool holders, there are still local shortcomings. Not only is vibration easily generated at the tool tip, leading to tool loosening, but the screws that fix the cutting tools are also small in size, making them prone to bending and deformation during cutting, which can also cause tool loosening and affect machining stability and accuracy.

[0004] Based on such market demand, technical requirements, and the shortcomings of existing cutting tools, designing a special cutting tool that is "not easy to loosen and has strong vibration resistance" in the field of five-axis machine tool special cutting tools, or for specific complex machining scenarios, has become a necessary direction to solve current machining pain points and meet the high-quality machining needs of five-axis machine tools. Utility Model Content

[0005] The purpose of this application is to provide a self-positioning, shock-resistant locking head for blades, in order to solve the technical problems existing in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is: to provide a blade self-positioning type anti-vibration locking head, comprising: an anti-vibration handle, a locking head body at one end of the anti-vibration handle, two symmetrically arranged open-end wrench flats on the outside of the locking head body, the locking head body being made entirely of high-strength alloy steel, and two symmetrically arranged blade mounting grooves at one end of each locking head body, each blade mounting groove containing a blade;

[0007] The mounting mechanism is located on the blade mounting slot and is used to install and fix the blade. The mounting mechanism includes: mounting hole, screw hole a, clamping screw, positioning block and positioning slot.

[0008] Furthermore, the blade has a fan-shaped mounting hole, and the blade mounting groove has a screw hole a corresponding to the mounting hole. A clamping screw is provided inside the mounting hole, and the bottom end of the clamping screw extends through the mounting hole into the screw hole a. A positioning block is fixedly connected to the blade mounting groove near the screw hole a. The bottom of the blade has a positioning groove that cooperates with the two positioning blocks.

[0009] Furthermore, both sides of the top of the positioning block are chamfered, and the top of the positioning groove is provided with a matching chamfer design that matches the chamfer of the positioning block.

[0010] Furthermore, the inner wall of the blade mounting groove is provided with an inclined surface a that slopes upward, and the periphery of the blade is provided with an inclined surface b that slopes downward.

[0011] Furthermore, a positioning cylinder is fixedly connected to the center of one end of the locking head body, and a locking bolt is fixedly connected to one end of the positioning cylinder. A screw hole b is opened at the center of one end of the anti-vibration tool holder.

[0012] Furthermore, a cooling chamber a is provided inside the main body of the locking head, and two liquid outlets are provided at the bottom end of the cooling chamber a, which are connected to the blade mounting groove. The two liquid outlets correspond to the two blades.

[0013] Furthermore, both the positioning cylinder and the locking bolt have liquid inlet chambers that communicate with the cooling chamber a, and the anti-vibration tool holder has a cooling chamber b that cooperates with the liquid inlet chamber.

[0014] The beneficial effects of this utility model are:

[0015] The advantages of this utility model are that the installation mechanism facilitates the installation of the cutting tool into the cutting tool mounting slot, making the operation simple and adaptable to the market scenario of increasing demand for five-axis machine tool cutting tools. It makes the cutting tool installation more stable and will not loosen due to vibration, and also increases the cutting rigidity of the cutting tool. The locking head body, made of high-strength alloy steel with high strength and shock resistance, improves the shock resistance of the cutting tool. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0019] Figure 3 This is an exploded view of the overall structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the main structure of the locking head of this utility model.

[0021] Figure 5 This is a schematic diagram of the blade structure of this utility model.

[0022] The following are the labeling elements in the figure:

[0023] 1. Anti-vibration handle; 11. Locking head body; 12. Open-end wrench flat part; 13. Blade mounting slot; 14. Blade; 2. Mounting hole; 21. Screw hole a; 22. Clamping screw; 23. Positioning block; 24. Positioning groove; 3. Angled surface a; 31. Angled surface b; 4. Positioning cylinder; 41. Locking bolt; 42. Screw hole b; 5. Cooling chamber a; 51. Liquid outlet; 52. Liquid inlet chamber; 53. Cooling chamber b. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0025] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0026] As attached Figure 1 and Figure 2The self-positioning anti-vibration locking head shown includes: an anti-vibration handle 1, a locking head body 11 at one end of the anti-vibration handle 1, two symmetrically arranged open-end wrench flats 12 on the outside of the locking head body 11, the locking head body 11 being made entirely of high-strength alloy steel, and two symmetrically arranged blade mounting slots 13 at one end of each locking head body 11, each blade mounting slot 13 containing a blade 14; and a mounting mechanism, which is located on the blade mounting slots 13 and is used to install and fix the blade 14.

[0027] During assembly, the insert 14 is first installed into the insert mounting slot 13 via the mounting mechanism, making the insert 14 more secure and preventing it from loosening due to vibration, thus increasing the cutting rigidity of the tool. Then, the locking head body 11 is installed onto the anti-vibration tool holder 1, and the locking head body 11 is tightened by clamping the open-end wrench flat part 12 with a wrench. Finally, the anti-vibration tool holder 1 is installed on the machine tool for use. The locking head body 11, made of high-strength alloy steel with high toughness, has the characteristics of high strength and vibration resistance, thereby improving the vibration resistance of the tool.

[0028] As attached Figure 3 , Figure 4 and Figure 5 As shown, the mounting mechanism includes: mounting hole 2, screw hole a21, clamping screw 22, positioning block 23 and positioning groove 24. The blade 14 has a fan-shaped mounting hole 2. The blade mounting groove 13 has a screw hole a21 corresponding to the mounting hole 2. The mounting hole 2 is provided with a clamping screw 22. The bottom end of the clamping screw 22 extends through the mounting hole 2 and into the screw hole a21. The blade mounting groove 13 is fixedly connected to the screw hole a21. The bottom of the blade 14 has a positioning groove 24 that cooperates with the two positioning blocks 23. The two sides of the top of the positioning block 23 are chamfered. The top of the positioning groove 24 is provided with a matching chamfer design that matches the chamfer of the positioning block 23.

[0029] When installing the blade 14, place the blade 14 into the blade mounting slot 13, aligning the two positioning slots 24 of the blade 14 with the two positioning blocks 23. At this time, the mounting hole 2 is opposite to the screw hole a21. Then, insert the clamping screw 22 into the mounting hole 2 and screw it into the screw hole a21. This fixes the blade 14 in the blade mounting slot 13. The positioning block 23 has a triangular structure design and a chamfered top, making it narrower at the top than at the bottom, making it easier to insert into the positioning slot 24. The matching chamfered design at the top of the positioning slot 24 increases the contact area, forming a triangular fixing relationship to improve stability and prevent the blade 14 from loosening due to vibration. It also increases the cutting rigidity of the tool. When replacing the blade 14, unscrew the clamping screw 22 from the screw hole a21 to release the clamping screw 22 and replace it.

[0030] In a preferred embodiment, the inner wall of the blade mounting groove 13 is provided with an inclined surface a3 that is inclined upwards, and the periphery of the blade 14 is provided with an inclined surface b31 that is inclined downwards.

[0031] Furthermore, during assembly, the blade 14 is inserted downwards from the top of the blade mounting slot 13. The inclined surface b31 on the periphery of the blade will naturally fit against the inclined surface a3 on the inner wall of the mounting slot. Since a3 is inclined to the top and b31 is inclined to the bottom, the inclination angles of the two form complementary guidance, which can automatically correct the slight deviation when the blade is inserted and guide the blade to slide into the preset installation position along the inclined surface. No additional tools are needed to assist in alignment, achieving a self-positioning effect of accurate placement and improving assembly efficiency.

[0032] As attached Figure 2 , Figure 3 and Figure 4 As shown, a positioning cylinder 4 is fixedly connected to the center of one end of the locking head body 11, and a locking bolt 41 is fixedly connected to one end of the positioning cylinder 4. A screw hole b42 is opened at the center of one end of the anti-vibration tool holder 1.

[0033] Specifically: When installing the locking head body 11, the locking bolt 41 is screwed into the screw hole b42, and the locking head body 11 is tightly fitted with the anti-vibration tool holder 1 by the pre-tightening force of the thread, so that the positioning cylinder 4 fits with the bottom of the screw hole b42.

[0034] In a preferred embodiment, the locking head body 11 has a cooling chamber a5 inside, and the bottom of the cooling chamber a5 has two liquid outlets 51 that communicate with the blade mounting groove 13. The two liquid outlets 51 correspond to the two blades 14. The positioning cylinder 4 and the locking bolt 41 both have liquid inlet chambers 52 that communicate with the cooling chamber a5. The anti-vibration handle 1 has a cooling chamber b53 that cooperates with the liquid inlet chamber 52.

[0035] Furthermore, after the locking head body 11 is installed, the liquid inlet chamber 52 corresponds to the cooling chamber b53. The coolant enters from the side hole of the cooling chamber b53, flows into the liquid inlet chamber 52 along the cooling chamber b53, and then flows into the cooling chamber a5 from the liquid inlet chamber 52. Finally, it flows out from the liquid outlet 51 onto the blade 14, thereby cooling the anti-vibration tool holder 1, the locking head body 11, and the blade 14.

[0036] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A blade self-positioning anti-shock lock head, characterized in that, include: The anti-vibration knife handle (1) has a locking head body (11) at one end. The locking head body (11) has two symmetrically arranged open wrench flats (12) on its exterior. The locking head body (11) is made of high-strength alloy steel. The locking head body (11) has two symmetrically arranged blade mounting slots (13) at one end. The blade mounting slots (13) are equipped with blades (14) inside. The mounting mechanism is located on the blade mounting slot (13) and is used to install and fix the blade (14). The mounting mechanism includes: mounting hole (2), screw hole a (21), clamping screw (22), positioning block (23) and positioning slot (24).

2. The self-locating shock resistant lock blade head of claim 1, wherein, The blade (14) has a fan-shaped mounting hole (2), and the blade mounting groove (13) has a screw hole a (21) corresponding to the mounting hole (2). The mounting hole (2) is provided with a clamping screw (22). The bottom end of the clamping screw (22) extends through the mounting hole (2) into the screw hole a (21). The blade mounting groove (13) is fixedly connected to a positioning block (23) near the screw hole a (21). The bottom of the blade (14) is provided with a positioning groove (24) that cooperates with the two positioning blocks (23).

3. The self-locating shock resistant lock blade head of claim 2, wherein, The two sides of the top of the positioning block (23) are all chamfered, and the top of the positioning groove (24) is provided with a matching chamfer design that matches the chamfer of the positioning block (23).

4. The self-locating shock resistant collet head of claim 1 wherein, The inner wall of the blade mounting groove (13) is provided with an inclined surface a (3) that is inclined towards the top, and the periphery of the blade (14) is provided with an inclined surface b (31) that is inclined towards the bottom.

5. The self-locating shock resistant collet head of claim 1 wherein, The locking head body (11) is fixedly connected to a positioning cylinder (4) at one end of its shaft. A locking bolt (41) is fixedly connected to one end of the positioning cylinder (4). A screw hole b (42) is provided at one end of the anti-vibration handle (1).

6. The self-locating shock resistant collet head of claim 5, wherein, The locking head body (11) has a cooling chamber a (5) inside. The bottom of the cooling chamber a (5) has two liquid outlets (51) that are connected to the blade mounting groove (13). The two liquid outlets (51) correspond to the two blades (14).

7. The self-locating shock resistant lock blade head of claim 6, wherein, The positioning cylinder (4) and the locking bolt (41) are both provided with liquid inlet chambers (52) that communicate with the cooling chamber a (5), and the anti-vibration handle (1) is provided with a cooling chamber b (53) that cooperates with the liquid inlet chamber (52).

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