Internal cooling screw tap

Abstract

The utility model relates to the technical field of thread machining tools, and discloses an internal cooling screw tap which comprises an installation block. And the flow guide cooling mechanism is fixedly connected to the top of the mounting block, and the flow guide cooling mechanism is used for facilitating cooling air to circulate in the flow guide cooling mechanism for heat dissipation. Through cooperation of the conical cylinder, the inserting pipe, the drainage cylinder and the drainage cover, in the rotating process of the mounting block, air flow can be guided into an inner cavity of one bent groove, then flows through the straight groove, the U-shaped groove and the other straight groove above the bent groove and is output from the other bent groove, and in the air circulation process, the air flow can be guided into the inner cavity of the other bent groove. The air flow can take away heat in the screw tap head, the function of internally cooling the screw tap head is achieved, the temperature of the screw tap head is reduced, the stability of the screw tap head in the tapping process is guaranteed, the screw tap head does not need to be externally connected with devices such as cooling liquid for use, and the use cost is low.

Description

Technical Field

[0001] This utility model relates to the field of thread cutting tool technology, specifically to an internally cooled tap. Background Technology

[0002] A tap is a tool for machining internal threads, also called a screw tap. It is typically made of high-hardness steel or cemented carbide and has a cutting edge and guide section at the front end to facilitate the formation of precise threads on the workpiece. Taps can be classified according to their shape into spiral flute taps, angled flute taps, straight flute taps, and pipe thread taps, etc.; according to their application environment into hand taps and machine taps; and according to their specifications into metric, US, and imperial taps, etc. Taps are the most mainstream machining tool used by operators in manufacturing for tapping.

[0003] Chinese patent discloses an internally cooled tap, publication number CN206305556U. The technical solution disclosed in this patent document is as follows: it includes a body, the front section of which is a tapping tool section and the rear section is a tool holder section. The front end of the tapping tool section has a conical section, and the part after the conical section of the tapping tool section is a cylindrical section. A threaded tool structure is provided on the outer peripheral surface of the tapping tool section, and a chip removal groove extending from the front end to the rear is provided on the tapping tool section.

[0004] To address the issue that taps generally lack cooling structures, existing technologies employ methods such as adding cooling holes and liquid inlets to the taps. However, this approach still results in high operating costs. In practical applications, this structure requires the construction of coolant pipelines and the continuous supply of coolant to the tap via a coolant device, further contributing to the high operating costs. Utility Model Content

[0005] The purpose of this invention is to provide an internally cooled tap, which solves the problem that the cost of using coolant to cool the tap through its interior is too high in the existing technology.

[0006] This utility model provides the following technical solution: an internally cooled tap, comprising:

[0007] Mounting block;

[0008] A cooling guide mechanism is fixedly connected to the top of the mounting block. The cooling guide mechanism is used to facilitate the flow of cooling air through its interior for heat dissipation.

[0009] A flow guiding mechanism is provided on the flow guiding cooling mechanism, and the flow guiding mechanism is used to guide cooling air into the interior of the flow guiding cooling mechanism.

[0010] As a preferred embodiment of the above technical solution, the flow guiding and cooling mechanism includes a square block, which is fixedly connected to the top of the mounting block. An extension shaft is fixedly connected to the top of the square block, and a tap is fixedly connected to the top of the extension shaft.

[0011] As a preferred embodiment of the above technical solution, the square block has a bending groove inside, the extension shaft has a straight groove inside, the number of bending grooves and straight grooves is set to two, and the tap head has a U-shaped groove inside.

[0012] Through the above technical solutions, by designing bending grooves, straight grooves and U-shaped grooves, heat dissipation channels can be formed inside the cooling mechanism, which facilitates the cooling of the tap tip.

[0013] As a preferred embodiment of the above technical solution, the drainage mechanism includes a connecting block, which is fixedly installed on the side of the square block. A connecting leg is movably inserted into the inner cavity of the connecting block, and a fixing bolt is threaded onto the outer wall of the connecting block. The threaded end of the fixing bolt is movably connected to the outer wall of the connecting leg.

[0014] The above technical solution, through the design of connecting legs, connecting blocks and fixing bolts, facilitates the operator's disassembly and recycling of the entire drainage tube.

[0015] As a preferred embodiment of the above technical solution, a conical cylinder is fixedly installed at the end of the connecting leg away from the connecting block, and a plug tube is fixedly connected to the side of the conical cylinder near the square block, and the plug tube is movably inserted into the side of the square block.

[0016] As a preferred embodiment of the above technical solution, a drainage tube is fixedly connected to the side of the conical cylinder away from the square block, and a drainage hood is fixedly connected to the side of the drainage tube away from the conical cylinder.

[0017] Through the above technical solution, by combining the diversion tube and the diversion hood, airflow can be introduced into the heat dissipation channel when the structure is rotating, which facilitates the cooling process.

[0018] As a preferred embodiment of the above technical solution, a rubber sleeve is fixedly fitted onto the outer wall of the insertion tube, and a filter cylinder is fixedly installed on the inner wall of the insertion tube.

[0019] The above technical solution, through the design of the filter cartridge, can prevent debris from entering the cooling mechanism and ensure the cooling effect.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This invention, through the cooperation of a conical cylinder, a plug pipe, a flow guide cylinder, and a flow guide shroud, allows airflow to be introduced into the inner cavity of one of the bending grooves during the rotation of the mounting block. The airflow then flows through the straight groove, the U-shaped groove, and another straight groove above the bending groove, and then exits from the other bending groove. During the airflow process, the airflow can carry away the heat inside the tap, achieving the function of internal cooling of the tap, reducing the temperature of the tap, ensuring the stability of the tap during the drilling process, and eliminating the need for external coolant or other devices, resulting in lower usage and maintenance costs. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present utility model;

[0023] Figure 2 This is a cross-sectional structural diagram of the square block, extension shaft, and tap head of this utility model;

[0024] Figure 3 This is a schematic diagram of the disassembled conical cylinder of this utility model;

[0025] Figure 4 This is a cross-sectional structural diagram of the insertion tube of this utility model.

[0026] In the diagram: 1. Mounting block; 2. Cooling guide mechanism; 21. Square block; 22. Extension shaft; 23. Tap head; 24. Bending groove; 25. Straight groove; 26. U-shaped groove; 3. Drainage mechanism; 31. Connecting block; 32. Connecting leg; 33. Conical cylinder; 34. Insert pipe; 341. Filter cylinder; 342. Rubber sleeve; 35. Drainage tube; 36. Drainage cover. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] like Figures 1-4 As shown, this utility model provides a technical solution: an internally cooled tap, comprising:

[0029] Install block 1;

[0030] The airflow cooling mechanism 2 is fixedly connected to the top of the mounting block 1. The airflow cooling mechanism 2 is used to facilitate the flow of cooling air through its interior for heat dissipation.

[0031] The airflow guiding mechanism 3 is installed on the airflow guiding cooling mechanism 2 and is used to guide the cooling air into the interior of the airflow guiding cooling mechanism 2.

[0032] As one implementation method in this embodiment, such as Figure 2As shown, the cooling mechanism 2 includes a square block 21, which is fixedly connected to the top of the mounting block 1. An extension shaft 22 is fixedly connected to the top of the square block 21, and a tap 23 is fixedly connected to the top of the extension shaft 22. A bending groove 24 is formed inside the square block 21, and a straight groove 25 is formed inside the extension shaft 22. Two bending grooves 24 and two straight grooves 25 are provided. A U-shaped groove 26 is formed inside the tap 23. Through the design of the bending groove 24, the straight groove 25, and the U-shaped groove 26, cooling can be achieved... The square block 21, the extension shaft 22, and the tap 23 form a reflux heat dissipation channel. When the tap 23 rotates, the airflow guiding mechanism 3 can introduce airflow into the inner cavity of one of the bending grooves 24. The airflow then flows through the straight groove 25, the U-shaped groove 26, and another straight groove 25 above the bending groove 24, and then exits from the other bending groove 24. During the airflow process, the airflow can carry away the heat inside the tap 23, thus realizing the function of internal cooling of the tap 23.

[0033] As one implementation method in this embodiment, such as Figure 3 , Figure 4 As shown, the drainage mechanism 3 includes a connecting block 31, which is fixedly installed on the side of the square block 21. A connecting leg 32 is movably inserted into the inner cavity of the connecting block 31. A fixing bolt is threaded onto the outer wall of the connecting block 31, and the threaded end of the fixing bolt is movably connected to the outer wall of the connecting leg 32. A conical cylinder 33 is fixedly installed on the end of the connecting leg 32 away from the connecting block 31. A insertion pipe 34 is fixedly connected to the side of the conical cylinder 33 near the square block 21 and is movably inserted into the side of the square block 21. A drainage tube 35 is fixedly connected to the side of the conical cylinder 33 away from the square block 21, and a drainage hood 36 is fixedly connected to the side of the drainage tube 35 away from the conical cylinder 33. When the mounting block 1 rotates, the opening of one of the drainage tubes 35 will rotate in the direction of rotation of the mounting block 1, and room temperature air will follow. The gas enters the inner cavity of the conical cylinder 33 through the guide tube 35 and the guide shroud 36, and then passes through the insertion tube 34 into the bending groove 24 for cooling. The opening of the other guide tube 35 is opposite to the rotation direction of the mounting block 1, so that the cooled gas can be discharged from the other guide tube 35. Loosen the fixing bolt on the connecting block 31, and then pull out the connecting leg 32 from the connecting block 31. Insert the connecting leg 32 into the inside of the connecting block 31 to complete the disassembly of the entire guide tube 35. Then tighten the fixing bolt on the connecting block 31 to complete the installation of the entire guide tube 35. With this design, when the tap 23 is damaged, the entire guide tube 35 can work together with other guiding and cooling mechanisms 2 to achieve the function of recycling the entire guide tube 35 and reduce the cost of use.

[0034] As one implementation method in this embodiment, such as Figure 3 , Figure 4 As shown, a rubber sleeve 342 is fixedly fitted onto the outer wall of the insertion tube 34, and a filter cylinder 341 is fixedly installed on the inner wall of the insertion tube 34. The design of the filter cylinder 341 avoids the problem that debris may pass through the insertion tube 34 and enter the inner cavity of the flow guiding cooling mechanism 2 during the processing, ensuring the unobstructed flow in the inner cavity of the flow guiding cooling mechanism 2, thereby ensuring the cooling effect. The design of the rubber sleeve 342 can seal the connection between the insertion tube 34 and the bending groove 24 when the insertion tube 34 is inserted into the bending groove 24.

[0035] Working principle: During use, this structure is connected to the external machine body from the mounting block 1. After the external machine body is working, it can drive the tap 23 to rotate to open the thread groove of the workpiece. During the rotation of the mounting block 1 and the cooling mechanism 2, the opening of one of the guide tubes 35 will rotate in the same direction as the rotation of the mounting block 1. The room temperature air will then be captured by the guide tube 35 and the guide cover 36 and enter the inner cavity of the conical cylinder 33. Then, it will pass through the insertion tube 34 and enter one of the bending grooves 24 for cooling. The airflow will then flow through the straight groove 25, the U-shaped groove 26 and another straight groove 25 above the bending groove 24, and then be output from the other bending groove 24. The opening of the other guide tube 35 will be opposite to the rotation direction of the mounting block 1, so that the cooled gas can be discharged from the other guide tube 35. During the airflow process, the airflow can carry away the heat inside the tap 23, thus realizing the function of internal cooling of the tap 23.

[0036] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An internally cooled tap, characterized in that, include: Install block (1); A flow-guiding cooling mechanism (2) is fixedly connected to the top of the mounting block (1). The flow-guiding cooling mechanism (2) is used to facilitate the flow of cooling air through its interior for heat dissipation. A flow guiding mechanism (3) is provided on the flow guiding cooling mechanism (2) and is used to guide cooling air into the interior of the flow guiding cooling mechanism (2).

2. The internally cooled tap according to claim 1, characterized in that: The flow guiding cooling mechanism (2) includes a square block (21), which is fixedly connected to the top of the mounting block (1). An extension shaft (22) is fixedly connected to the top of the square block (21), and a tap (23) is fixedly connected to the top of the extension shaft (22).

3. The internally cooled tap according to claim 2, characterized in that: The square block (21) has a bending groove (24) inside, the extension shaft (22) has a straight groove (25) inside, the number of bending grooves (24) and straight grooves (25) is set to two, and the tap head (23) has a U-shaped groove (26) inside.

4. The internally cooled tap according to claim 2, characterized in that: The drainage mechanism (3) includes a connecting block (31), which is fixedly installed on the side of the square block (21). A connecting leg (32) is movably inserted into the inner cavity of the connecting block (31). A fixing bolt is threadedly connected to the outer wall of the connecting block (31), and the threaded end of the fixing bolt is movably connected to the outer wall of the connecting leg (32).

5. The internally cooled tap according to claim 4, characterized in that: A conical cylinder (33) is fixedly installed at the end of the connecting leg (32) away from the connecting block (31). A plug tube (34) is fixedly connected to the side of the conical cylinder (33) near the square block (21). The plug tube (34) is movably inserted into the side of the square block (21).

6. The internally cooled tap according to claim 5, characterized in that: A diversion tube (35) is fixedly connected to the side of the conical tube (33) away from the square block (21), and a diversion hood (36) is fixedly connected to the side of the diversion tube (35) away from the conical tube (33).

7. The internally cooled tap according to claim 6, characterized in that: A rubber sleeve (342) is fixedly fitted on the outer wall of the insertion tube (34), and a filter cylinder (341) is fixedly installed on the inner wall of the insertion tube (34).

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