Alloyed hole opener

Abstract

The application relates to the field of machining tools, in particular to an alloy hole opener which comprises an opener main body and a positioning drill, the opener main body is in a downward-opening cylindrical cylinder shape, an upper end is provided with a connecting handle, alloy drill bits are uniformly distributed in the circumferences of a lower end of the opening, an inner side top is provided with a fixing groove for inserting a handle part of the positioning drill, the positioning drill is internally provided with a hollow accommodating cavity, the accommodating cavity is placed with lubricating wax in a solidification state at normal temperature, a blade part surface of the positioning drill is provided with a plurality of liquid outlet holes which are in communication with the accommodating cavity, the alloy hole opener further comprises a material returning spring, a pressing-down assembly, a limiting nail and other structures, and the distribution of the liquid outlet holes, the insertion mode of the lubricating wax and the like are specifically designed. The alloy hole opener reaches the functions of lubrication, noise reduction and shock absorption by using high-temperature melted lubricating wax in the alloy hole opening process.

Description

Technical Field

[0001] This application relates to the field of machining, and in particular to an alloy hole opener. Background Technology

[0002] In the field of machining, hole drilling is a fundamental and crucial process, playing a vital role in the manufacturing and assembly of various parts. With the continuous development of industry, the performance requirements for hole drilling tools are also increasing. Alloy materials are being used more and more widely in industry, leading to the development of alloy hole drills. Their emergence has provided new possibilities for high-strength, multi-material machining, meeting the high-precision and high-efficiency machining requirements in many fields such as construction, aerospace, and automotive manufacturing, greatly promoting the development of these industries. However, existing alloy hole drills have some drawbacks: they generate significant high-frequency vibration and noise during operation, which not only affects the working environment and health of operators but may also have a certain impact on machining accuracy and quality, failing to meet the needs of some professional construction scenarios with high requirements for machining environment and precision. Utility Model Content

[0003] The purpose of this application is to provide an alloy hole opener that can solve the problem of large high-frequency vibration and noise generated when the hole opener is working.

[0004] An alloy hole saw includes a hole saw body and a positioning drill. The upper end of the hole saw body has a connecting shank. The hole saw body is a cylindrical tube with its opening facing downwards, and alloy drill bits are evenly distributed circumferentially at the lower end of the opening. A fixing groove is provided on the inner top of the hole saw body for the insertion of the positioning drill shank. The positioning drill has a hollow receiving cavity containing lubricating wax that is solidified at room temperature. The cutting surface of the positioning drill has several outlet holes that connect inwards to the receiving cavity. By adopting the above technical solution, the alloy hole saw heats up during hole making, causing the lubricating wax in the receiving cavity to melt and flow out through the outlet holes. This reduces friction, absorbs vibration energy, and reduces direct impact on the metal contact surface, thereby achieving noise reduction and vibration damping. It can adapt to the processing needs of various materials, has a long service life, and stable cutting performance. Optionally, the outlet holes are divided into at least two groups along the axial direction of the positioning drill; each group has two outlet holes, and the two outlet holes are symmetrically arranged on both sides of the positioning drill along the same axis. By adopting the above technical solution, the melted lubricating wax can flow more evenly from both sides of the positioning drill, further improving the effects of reducing friction, absorbing vibration energy, and reducing direct impact on the metal contact surface, thus better achieving noise reduction and vibration damping. Optionally, a material ejection spring is sleeved on the outside of the positioning drill, and the upper end of the material ejection spring is fixed inside the hole opener body; the liquid outlet is distributed on the inner side of the material ejection spring. By adopting the above technical solution, the material ejection spring is sleeved on the outside of the positioning drill, and the liquid outlet is distributed on the inner side of the material ejection spring, which not only plays a material ejection role, but also prevents foreign objects such as debris from entering the liquid outlet. Optionally, the lubricating wax is a rod-shaped independent structure; the top of the shank of the positioning drill has an insertion hole communicating with the receiving cavity, and the lubricating wax is movably inserted into the receiving cavity through the insertion hole. By adopting the above technical solution, the lubricating wax is designed as a rod-shaped independent structure and can be movably inserted into the receiving cavity of the positioning drill, which facilitates the replacement and replenishment of the lubricating wax, ensuring that the alloy hole opener can continuously use the lubricating wax to reduce friction and absorb vibration energy. Optionally, a pressing component is provided at the upper end of the lubricating wax within the insertion hole. The pressing component includes a pressing block and a spring. The pressing block presses the spring downwards against the upper end of the lubricating wax. By adopting the above technical solution, the pressing component can use the elasticity of the spring to press the pressing block downwards to squeeze the lubricating wax when the lubricating wax decreases due to melting, ensuring that the lubricating wax can continuously flow out from the outlet hole, maintaining good lubrication, noise reduction, and vibration damping effects. Optionally, a limiting hole penetrating into the fixing groove is provided on the upper outer side of the hole opener body. A limiting pin is movably installed in the limiting hole, and a limiting groove is provided on the side of the shank of the positioning drill for the limiting pin to be inserted and abutted. By adopting the above technical solution, when the hole opener body and the positioning drill are installed, the limiting pin can be inserted into the limiting groove of the positioning drill shank to achieve positioning and fixation of the two, ensuring that the positioning drill will not easily shake or detach during use, thus ensuring the stability and reliability of the overall structure of the alloy hole opener.Optionally, the limiting groove is connected to the insertion hole, and a guide extending outward through the limiting groove is provided on one side of the pressure block. The guide extends obliquely downward outward, and a clearance groove is provided at the lower end of the limiting groove for the guide to be inserted downward. By adopting the above technical solution, the limiting groove is connected to the insertion hole, and a guide extending outward through the limiting groove is provided on one side of the pressure block. The guide extends obliquely downward outward, and a clearance groove is provided at the lower end of the limiting groove, so that when the limiting pin enters the limiting groove, it can squeeze the guide and press it downward, and the limiting pin can be used to keep the compression spring compressed. Optionally, a friction plate is provided at the outer end of the guide to conform downward to the outer surface of the positioning drill. By adopting the above technical solution, the friction plate can be squeezed between the shank of the positioning drill and the inner wall of the fixing groove, so that when the positioning drill is inserted upward into the fixing groove, the frictional resistance of the friction plate will drive and hold the pressure block towards the compression spring, thereby facilitating the insertion of the limiting pin into the limiting groove.

[0005] In summary, this application includes at least one of the following beneficial technical effects: 1. The alloy hole opener has higher hardness and stronger wear resistance, can adapt to the processing needs of various materials, and is suitable for professional construction scenarios requiring efficient and precise hole opening; 2. The positioning drill has a receiving cavity filled with lubricating wax. When the hole is opened, the temperature rises, causing the lubricating wax to melt and flow out through the liquid outlet, which can reduce friction, absorb vibration energy, and reduce the direct impact on the metal contact surface, thereby achieving the effects of noise reduction and vibration damping. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0007] Figure 2 This is a schematic diagram of the positioning drill and the limiting pin in the embodiments of this application.

[0008] Figure 3 This is a cross-sectional view of the positioning drill and the limiting pin in the embodiments of this application.

[0009] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at point A in the diagram.

[0010] Explanation of reference numerals in the attached figures: 1. Hole opener body; 11. Alloy drill bit; 12. Fixing groove; 13. Limiting hole; 14. Limiting pin; 2. Connecting handle; 3. Positioning drill; 31. Receiving cavity; 32. Liquid outlet hole; 33. Insertion hole; 34. Limiting groove; 341. Relief groove; 4. Lubricating wax; 5. Material ejection spring; 6. Pressing assembly; 61. Pressure block; 62. Compression spring; 63. Guide component; 64. Friction plate. Detailed Implementation

[0011] The technical solutions in the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model. An alloy hole opener provided in this application embodiment, referencing... Figure 1 and 3 The device includes a hole saw body 1 and a positioning drill 3. The hole saw body 1 has an integrally formed connecting shank 2 for easy connection to a drive device (drill gun). The hole saw body 1 is a cylindrical tube with its opening facing downwards. A large number of alloy drill bits 11 are evenly distributed circumferentially at the lower end of the opening. The alloy drill bits 11 are fixed to the lower end of the opening of the hole saw body 1 by welding, ensuring they will not fall off during the hole-making process and allowing for stable cutting. The positioning drill 3 is installed by inserting its shank into a fixing groove 12 on the top inner side of the hole saw body 1.

[0012] Reference Figure 1 and 2 The upper outer side of the hole opener body 1 has a limiting hole 13 that extends into the fixing groove 12. A limiting pin 14 is threaded into the limiting hole 13. A limiting groove 34 is formed on the side of the shank of the positioning drill 3. After passing through the limiting hole 13, the limiting pin 14 can be inserted into and abut against the limiting groove 34, thereby preventing the positioning drill 3 from rotating or moving axially relative to the hole opener body 1 during operation and ensuring the stability of the positioning drill 3. The limiting pin 14 is made of metal and can be cylindrical in shape. The shape of the limiting groove 34 must match the end face structure of the limiting pin 14.

[0013] Reference Figure 3 The positioning drill 3 has a receiving cavity 31, and the upper end of the receiving cavity 31 passes through the positioning drill 3 to form an insertion hole 33. A solidified lubricating wax rod 4 can be inserted into the receiving cavity 31 through the insertion hole 33. Several liquid outlet holes 32 are formed on the surface of the cutting edge of the positioning drill 3, communicating with the receiving cavity 31. This allows the lubricating wax 4 to melt when the hole is drilled, and flow out through the liquid outlet holes 32, reducing friction, absorbing vibration energy, and reducing direct impact on the metal contact surface, thus achieving noise reduction and vibration damping. The lubricating wax 4 can be made of materials with good lubrication and vibration damping properties, such as paraffin wax containing special additives, or existing cooling wax can be used, providing lubrication and vibration damping while also cooling the temperature.

[0014] The shape of the receiving cavity 31 can be designed according to the shape of the lubricating wax 4, and is generally cylindrical. In this embodiment, eight liquid outlet holes 32 are provided on the surface of the cutting edge of the positioning drill 3. The eight liquid outlet holes 32 are evenly divided into four groups, upper and lower, along the axial direction of the positioning drill 3. Two liquid outlet holes 32 in each group are symmetrically arranged on both sides of the positioning drill 3 along the same axis. This arrangement allows the melted lubricating wax 4 to flow out more evenly, improving the lubrication and vibration reduction and noise reduction effects. The shape of the liquid outlet hole 32 can be circular, elliptical, etc., and its size is determined according to the flow rate and amount of lubricating wax 4.

[0015] Reference Figure 2 A ejector spring 5 is fitted around the outer side of the positioning drill 3. The upper end of the ejector spring 5 is fixed inside the hole opener body 1, and the liquid outlet holes 32 are distributed inside the ejector spring 5. The ejector spring 5 can push out the waste material generated during processing after the hole is opened, improving work efficiency, and can also prevent foreign objects such as debris from entering the liquid outlet holes 32. Reference Figure 3 and 4 The limiting groove 34 is connected to the insertion hole 33. A set of pressing components 6 can be installed into the receiving cavity 31 through the limiting groove 34. The pressing component 6 includes a pressing block 61 and a compression spring 62. The compression spring 62 is snapped and fixed below the pressing block 61. The pressing block 61 presses the compression spring 62 downward onto the upper end of the lubricating wax 4. One side of the pressing block 61 has an integrally formed guide member 63 extending outward through the limiting groove 34. The guide member 63 extends obliquely downward outward. The outer end of the guide member 63 also has an integrally formed friction plate 64 that conforms downward to the outer surface of the positioning drill 3. The lower end of the limiting groove 34 has a relief groove 341 for the guide member 63 to be inserted downward. The function of the guide member 63 is to guide the lubricating wax 4 to flow better to the outlet hole 32 after melting. At the same time, it can also play a certain guiding role in the movement of the pressing component 6. The friction plate 64 can increase the friction between the guide member 63 and the outer surface of the positioning drill 3, making the guide member 63 more stable during operation. It can also play a certain protective role for the positioning drill 3. The friction plate 64 can be made of rubber or other materials with good friction properties.

[0016] The implementation principle of this embodiment is as follows: During the drilling process, friction generates heat, causing the lubricating wax 4 to melt and flow out through the outlet hole 32, forming a lubricating film on the metal contact surface. This reduces direct impact and absorbs vibration energy, effectively lowering noise and vibration. The cooperation of the ejector spring 5, the pressing assembly 6, the limiting pin 14, and other structures further improves the stability and working efficiency of the drilling machine.

[0017] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An alloy hole opener, comprising a hole opener body (1) and a positioning drill (3), wherein the upper end of the hole opener body (1) is provided with a connecting handle (2); the hole opener body (1) is a cylindrical tube with its opening facing downward, and alloy drill bits (11) are evenly distributed circumferentially at the lower end of its opening; a fixing groove (12) for inserting the shank of the positioning drill (3) is provided on the inner top of the hole opener body (1), characterized in that, The positioning drill (3) is provided with a hollow receiving cavity (31), and the receiving cavity (31) is provided with lubricating wax (4) that is solidified at room temperature; the cutting surface of the positioning drill (3) is provided with a plurality of liquid outlet holes (32) that communicate inward with the receiving cavity (31).

2. The alloy hole opener according to claim 1, characterized in that: The liquid outlet holes (32) are divided into at least two groups along the axial direction of the positioning drill (3); each group of liquid outlet holes (32) is provided with two holes, and the two liquid outlet holes (32) are symmetrically arranged on both sides of the positioning drill (3) along the same axis.

3. The alloy hole opener according to claim 2, characterized in that: The positioning drill (3) is fitted with a material ejection spring (5) on its outer side, and the upper end of the material ejection spring (5) is fixed inside the hole opener body (1); the liquid outlet (32) is distributed on the inner side of the material ejection spring (5).

4. The alloy hole opener according to claim 1, characterized in that: The lubricating wax (4) is a rod-shaped independent structure; the top of the shank of the positioning drill (3) is provided with an insertion hole (33) that communicates with the receiving cavity (31), and the lubricating wax (4) can be movably inserted into the receiving cavity (31) through the insertion hole (33).

5. The alloy hole opener according to claim 4, characterized in that: A pressing component (6) is provided inside the socket (33) at the upper end of the lubricating wax (4). The pressing component (6) includes a pressing block (61) and a compression spring (62). The pressing block (61) presses the compression spring (62) down onto the upper end of the lubricating wax (4).

6. The alloy hole opener according to claim 5, characterized in that: The upper outer side of the hole opener body (1) is provided with a limiting hole (13) that extends into the fixing groove (12). A limiting pin (14) is movably disposed in the limiting hole (13). The side of the shank of the positioning drill (3) is provided with a limiting groove (34) for the limiting pin (14) to be inserted and abutted.

7. The alloy hole opener according to claim 6, characterized in that: The limiting groove (34) is connected to the insertion hole (33). One side of the pressure block (61) is provided with a guide (63) extending outward through the limiting groove (34). The guide (63) extends obliquely downward outward. The lower end of the limiting groove (34) is provided with a relief groove (341) for the guide (63) to be inserted downward.

8. The alloy hole opener according to claim 7, characterized in that: The outer end of the guide member (63) is provided with a friction plate (64) that is in contact with the outer surface of the positioning drill (3) downward.

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