Gear shaft deep hole machining tool

Abstract

The utility model discloses a gear shaft deep hole processing tool, concretely relates to gear shaft processing technical field, including handle, the one side fixed setting of handle has the tool shank, the one side fixed setting of tool shank has the tool head, the inside setting of tool shank has cooling mechanism, and cooling mechanism includes the hollow slot of setting in the inside of tool shank, the inside fixed setting of hollow slot has cooling liquid pipe, and the cross section of cooling liquid pipe sets up as L shape, and the one end of cooling liquid pipe is through tool head and extends to the inside of tool head, and the surface of cooling liquid pipe sets up a plurality of cooling liquid mouth, and the one end fixed setting of tool head has cutting edge. In the utility model, the cooling liquid can be accurately sprayed to the cutting edge, the cutting heat is quickly taken away, the tool wear is effectively reduced in time, the service life of tool is prolonged, the processing cost is reduced, and the economic benefit and processing quality of gear shaft deep hole processing are improved.

Description

Technical Field

[0001] This utility model relates to the field of gear shaft machining technology, and more specifically, to a tool for deep hole machining of gear shafts. Background Technology

[0002] In the manufacturing process of gear shafts, deep hole machining is a key and challenging process. Gear shaft deep hole machining tools are tools specifically used to machine deep hole structures in gear shaft parts. Deep holes usually refer to holes with a length-to-diameter ratio greater than the ratio of hole depth to hole diameter, such as the center hole and oil hole of gear shafts.

[0003] Currently, when machining deep holes in gear shafts, traditional deep hole machining tools are used because the space inside the hole is small and enclosed, making it difficult for heat to dissipate. Traditional tools cannot create a good convection cooling environment, and the heat generated by cutting accumulates inside the hole, causing the temperature to rise rapidly. This changes the material properties of the workpiece, affecting the machining quality. At the same time, high temperatures also accelerate the wear and damage of the tool. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a deep hole machining tool for gear shafts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A deep hole machining tool for gear shafts includes a tool holder, a tool shank fixedly mounted on one side of the tool holder, a tool head fixedly mounted on one side of the tool shank, and a cooling mechanism disposed inside the tool shank.

[0007] The cooling mechanism includes a hollow groove inside the tool holder, a coolant pipe fixedly installed inside the hollow groove, the coolant pipe having an L-shaped cross-section, one end of the coolant pipe passing through the tool head and extending into the tool head, and multiple coolant ports being opened on the surface of the coolant pipe, with a cutting edge fixedly installed at one end of the tool head.

[0008] By adopting the above technical solution, the L-shaped coolant pipe combined with multiple coolant ports allows the coolant to be precisely sprayed around the cutting edge, quickly removing cutting heat, effectively reducing the temperature of the tool and workpiece, and avoiding the impact of high temperature on the material properties of the workpiece.

[0009] As a further description of the above technical solution: the surface of the cutting head is provided with a chip removal mechanism, the chip removal mechanism includes multiple chip removal grooves formed on the surface of the cutting head, the width of the chip removal grooves gradually increases on the cutting head, the chip removal grooves extend spirally to the surface of the cutting shank, multiple guide strips are fixedly provided on the surface of the cutting shank, the cutting head is made of cemented carbide material, the cutting shank is made of alloy steel material, and the cutting shank is made of high-strength alloy steel material.

[0010] By adopting the above technical solution, the centrifugal force generated by the rotation of the tool and the flushing force of the coolant can be used to quickly remove chips, avoid chip blockage, ensure processing continuity, improve processing efficiency, and enhance tool stability by contacting the hole wall during processing, reducing vibration and ensuring high precision and good surface quality in deep hole machining.

[0011] As a further description of the above technical solution: the surface of the guide strip is provided with a wear-resistant coating, which can be made of ceramic material; a rotary joint is fixedly installed at one end of the coolant pipe; and a threaded groove is opened on the inner wall of the tool holder 1.

[0012] By adopting the above technical solution, a rotary joint at one end of the coolant pipe is used to achieve a reliable connection with the external coolant supply system, ensuring a continuous and stable supply of coolant during the machining process. In addition, the guide strip is coated with a wear-resistant ceramic material coating, which greatly reduces friction with the hole wall, significantly improves wear resistance, and enhances the stability of the tool during the machining process.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. By setting up a cooling mechanism, compared with existing technologies, the tool holder and machine tool spindle are firmly connected through a threaded groove, and the coolant pipe is reliably connected to the external system through a rotary joint, ensuring a stable coolant supply throughout the machining process. The L-shaped coolant pipe, together with multiple coolant ports, can accurately spray coolant around the cutting edge. Compared with traditional cooling methods, it can more efficiently cover the key cutting area and quickly remove cutting heat. This effectively avoids the problem of changes in material properties of the workpiece due to high temperature, reduces tool wear caused by overheating, and extends tool life. At the same time, stable and precise cooling ensures the stability of the machining process, improves the accuracy and surface quality of deep hole machining of gear shafts, reduces scrap rate, and improves machining efficiency.

[0015] 2. By setting up a chip removal mechanism, compared with existing technologies, the spiral chip removal groove design with gradually changing groove width, with the help of the centrifugal force generated by the rotation of the tool and the flushing force of the coolant, can more efficiently and quickly remove chips from the hole than the traditional straight chip removal groove, completely solving the problem of chip clogging, ensuring machining continuity, and improving machining efficiency. The guide strip set on the surface of the tool holder and coated with a ceramic wear-resistant coating changes the situation of unstable tool guidance and easy wear in the existing tool. When guiding the tool in contact with the hole wall, it significantly reduces the coefficient of friction, reduces tool vibration, enhances machining stability, ensures high precision and excellent surface quality in deep hole machining, avoids scrap caused by guidance deviation, extends tool life, and effectively reduces overall machining costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0018] Figure 3 This is a cross-sectional structural diagram of the cooling mechanism of this utility model.

[0019] Figure 4 This is a schematic diagram of the chip removal mechanism of this utility model.

[0020] Figure 5 This is a top view of the structure of this utility model.

[0021] The attached diagram is labeled as follows: 1. Tool holder; 2. Tool shank; 3. Tool head; 4. Hollow groove; 5. Coolant pipe; 6. Coolant inlet; 7. Cutting edge; 8. Chip removal groove; 9. Guide bar; 10. Wear-resistant coating; 11. Rotary joint; 12. Threaded groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The embodiments disclosed in this application are as follows: Figure 1-5 The gear shaft deep hole machining tool shown includes a tool holder 1, a tool bar 2 fixedly mounted on one side of the tool holder 1, a tool head 3 fixedly mounted on one side of the tool bar 2, and a cooling mechanism inside the tool bar 2.

[0024] The cooling mechanism includes a hollow groove 4 inside the tool holder 2. A coolant pipe 5 is fixedly installed inside the hollow groove 4. The cross-section of the coolant pipe 5 is L-shaped. One end of the coolant pipe 5 passes through the tool head 3 and extends into the tool head 3. Multiple coolant ports 6 are opened on the surface of the coolant pipe 5. A cutting edge 7 is fixedly installed at one end of the tool head 3.

[0025] The machine tool spindle drives the tool holder 1, tool bar 2 and tool head 3 to rotate at high speed. The cutting edge 7 of the tool head 3 begins to cut the gear shaft. The tool head 3 is made of cemented carbide material, which has high hardness and can efficiently cut workpiece material.

[0026] Meanwhile, during the cutting process, the external coolant supply system delivers coolant to the coolant pipe 5 through the rotary joint 11. The coolant pipe 5 has an L-shaped cross-section and multiple coolant ports 6 on its surface. The coolant is sprayed out from the coolant ports 6 and accurately sprayed onto the cutting area around the cutting edge 7, carrying away a large amount of heat generated during the cutting process, achieving effective cooling of the tool and workpiece, and reducing changes in workpiece material properties and tool wear caused by high temperature.

[0027] Furthermore, when the cutter head 3 generates chips while cutting the gear shaft, the chip removal groove 8 provided on the surface of the cutter head 3 begins to function. The chip removal groove 8 extends spirally to the surface of the tool holder 2, and the groove width gradually increases at the cutter head 3. During the rotation of the tool, the chips move along the chip removal groove 8 towards the tool holder 2 under the action of centrifugal force and the flushing action of the coolant, and are eventually discharged out of the hole, avoiding chip blockage that affects the machining.

[0028] Reference Figure 2-3 As shown, the surface of the cutter head 3 is provided with a chip removal mechanism, which includes multiple chip removal grooves 8 formed on the surface of the cutter head 3. The width of the chip removal grooves 8 gradually increases on the cutter head 3. The chip removal grooves 8 extend spirally to the surface of the cutter shank 2. Multiple guide strips 9 are fixedly provided on the surface of the cutter shank 2. The cutter head 3 is made of cemented carbide material, the cutter shank 1 is made of alloy steel material, and the cutter shank 2 is made of high-strength alloy steel material.

[0029] The tool holder 1 is connected to the machine tool spindle through the threaded groove 12 on the inner wall. The tool holder 1 is made of alloy steel, and its threaded groove 12 can ensure a stable fit with the machine tool spindle. At the same time, the rotary joint 11 at one end of the coolant pipe 5 is connected to the external coolant supply system to ensure that the coolant delivery path is unobstructed.

[0030] Furthermore, when the cutter head 3 generates chips while cutting the gear shaft, the chip removal groove 8 provided on the surface of the cutter head 3 begins to function. The chip removal groove 8 extends spirally to the surface of the tool holder 2, and the groove width gradually increases at the cutter head 3. During the rotation of the tool, the chips move along the chip removal groove 8 towards the tool holder 2 under the action of centrifugal force and the flushing action of the coolant, and are eventually discharged out of the hole, avoiding chip blockage that affects the machining.

[0031] Reference Figure 4-5 As shown, the surface of the guide bar 9 is provided with a wear-resistant coating 10, which can be made of ceramic material. A rotary joint 11 is fixedly installed at one end of the coolant pipe 5, and a threaded groove 12 is opened on the inner wall of the tool holder 1.

[0032] Meanwhile, multiple guide bars 9 fixedly installed on the surface of the tool holder 2 contact the hole wall of the deep hole of the gear shaft during the machining process, playing the role of guiding the tool. The ceramic wear-resistant coating 10 coated on the surface of the guide bars 9 can effectively reduce friction with the hole wall, reduce wear, enhance the stability of the tool during the machining process, and ensure the accuracy and surface quality of deep hole machining. As the tool continues to rotate and cut, the above-mentioned cooling, chip removal and guiding stabilization processes continue until the machining task of the deep hole of the gear shaft is completed.

[0033] Working principle of this utility model:

[0034] This utility model is a deep hole machining tool for gear shafts. When the device is in use, the tool holder 1 is connected to the machine tool spindle through the threaded groove 12 on the inner wall. The tool holder 1 is made of alloy steel, and its threaded groove 12 can ensure a stable fit with the machine tool spindle. At the same time, the rotary joint 11 at one end of the coolant pipe 5 is connected to the external coolant supply system to ensure that the coolant delivery path is unobstructed.

[0035] When the machine tool is turned on, the machine tool spindle drives the tool holder 1, tool bar 2 and tool head 3 to rotate at high speed. The cutting edge 7 of the tool head 3 begins to cut the gear shaft. The tool head 3 is made of cemented carbide material, which has high hardness and can efficiently cut workpiece material.

[0036] Meanwhile, during the cutting process, the external coolant supply system delivers coolant to the coolant pipe 5 through the rotary joint 11. The coolant pipe 5 has an L-shaped cross-section and multiple coolant ports 6 on its surface. The coolant is sprayed out from the coolant ports 6 and accurately sprayed onto the cutting area around the cutting edge 7, carrying away a large amount of heat generated during the cutting process, achieving effective cooling of the tool and workpiece, and reducing changes in workpiece material properties and tool wear caused by high temperature.

[0037] Moreover, when the cutter head 3 generates chips while cutting the gear shaft, the chip removal groove 8 provided on the surface of the cutter head 3 begins to play its role. The chip removal groove 8 extends spirally to the surface of the tool holder 2, and the groove width gradually increases at the cutter head 3. During the rotation of the tool, the chips move along the chip removal groove 8 towards the tool holder 2 under the action of centrifugal force and the flushing action of the coolant, and are eventually discharged out of the hole, avoiding chip blockage and affecting the machining.

[0038] Meanwhile, multiple guide bars 9 fixedly installed on the surface of the tool holder 2 contact the hole wall of the deep hole of the gear shaft during the machining process, playing the role of guiding the tool. The ceramic wear-resistant coating 10 coated on the surface of the guide bars 9 can effectively reduce friction with the hole wall, reduce wear, enhance the stability of the tool during the machining process, and ensure the accuracy and surface quality of deep hole machining. As the tool continues to rotate and cut, the above-mentioned cooling, chip removal and guiding stabilization processes continue until the machining task of the deep hole of the gear shaft is completed.

[0039] 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. A tool for machining deep holes in gear shafts, including a tool holder (1), characterized in that: A blade (2) is fixedly provided on one side of the handle (1), and a blade head (3) is fixedly provided on one side of the blade (2). A cooling mechanism is provided inside the blade (2). The cooling mechanism includes a hollow groove (4) inside the tool holder (2), a coolant pipe (5) is fixedly installed inside the hollow groove (4), the cross-section of the coolant pipe (5) is L-shaped, one end of the coolant pipe (5) passes through the tool head (3) and extends into the tool head (3), a plurality of coolant ports (6) are opened on the surface of the coolant pipe (5), and a cutting edge (7) is fixedly installed at one end of the tool head (3).

2. The gear shaft deep hole machining tool according to claim 1, characterized in that: The surface of the cutter head (3) is provided with a chip removal mechanism, which includes a plurality of chip removal grooves (8) formed on the surface of the cutter head (3). The width of the chip removal grooves (8) gradually increases on the cutter head (3), and the chip removal grooves (8) extend spirally to the surface of the cutter bar (2).

3. The gear shaft deep hole machining tool according to claim 1, characterized in that: The surface of the cutter bar (2) is fixedly provided with multiple guide strips (9), and the cutter head (3) is made of cemented carbide material.

4. The gear shaft deep hole machining tool according to claim 1, characterized in that: The handle (1) is made of alloy steel, and the shank (2) is made of high-strength alloy steel.

5. The gear shaft deep hole machining tool according to claim 3, characterized in that: The surface of the guide strip (9) is provided with a wear-resistant coating (10), which may be made of ceramic material.

6. The gear shaft deep hole machining tool according to claim 1, characterized in that: A rotary joint (11) is fixedly installed at one end of the coolant pipe (5), and a threaded groove (12) is provided on the inner wall of the knife handle (1).

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