A variable pitch milling cutter for high-speed milling of titanium alloy

Abstract

This utility model relates to the field of machining technology, and in particular to a variable pitch milling cutter for high-speed milling of titanium alloys. It includes a drive assembly, a water supply assembly rotatably mounted at the bottom of the drive assembly, and a milling assembly fixedly mounted at the bottom of the water supply assembly by screws. The drive assembly includes a protective shell, and a top cover fixedly mounted on the top of the protective shell by screws. Two rotating rods are rotatably mounted inside the top cover. A first gear is welded and fixedly mounted on the outer surface of each rotating rod, and a single chain is fitted onto the outer surface of the two first gears. This device can drive the rotating rods to rotate via a motor, which, in conjunction with the chain, drives the water supply assembly and the milling assembly to rotate at high speed. Simultaneously, a second gear mounted at the bottom of the connecting seat rotates, and a hexagonal opening is formed at its bottom. The user can adjust the tooth pitch by fitting a rack fixedly mounted on the outer surface of the milling cutter body through the opening.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a variable pitch milling cutter for high-speed milling of titanium alloys. Background Technology

[0002] Milling cutters are rotary cutting tools used for milling operations, and most are multi-edged tools. They are classified by application into face milling cutters, end mills, etc., and are made of materials such as high-speed steel and cemented carbide. They can machine planes, grooves, and shaped surfaces, and are widely used in the field of mechanical manufacturing. However, most existing milling cutters are fixed in one piece. If it is necessary to change the milling cutter during the machining process, it is necessary to manually disassemble the milling cutter and replace it with the corresponding milling cutter.

[0003] Chinese utility model patent CN215941623U discloses an unequal pitch end mill, which includes "a fixing member, the surface of which is movably connected to the end mill body, a U-shaped groove at the bottom of the fixing member, a placement groove on the inner wall of the U-shaped groove, a U-shaped block movably connected to the inner wall of the placement groove, the surface of the U-shaped block being welded to the surface of the end mill body, a circular hole on the surface of the U-shaped block, and a threaded hole on the surface of the fixing member". However, during machining, this unequal pitch end mill may experience a rapid temperature rise due to friction. Under high temperature, the metal chips generated during milling will undergo plastic deformation due to material softening. In addition, the cutting fluid is difficult to fully penetrate the contact interface, and the chips easily adhere to the cutting edge or the surface of the cutter body. The chips accumulated on the cutting edge or the cutter body not only affect the machining accuracy but also accelerate tool wear and reduce cutting efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a variable pitch milling cutter for high-speed milling of titanium alloys, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a variable pitch milling cutter for high-speed milling of titanium alloys, comprising a drive assembly, a water supply assembly rotatably mounted on the bottom of the drive assembly, and a milling assembly fixedly mounted on the bottom of the water supply assembly by screws;

[0006] The drive assembly includes a protective housing, and a top cover is fixedly installed on the top of the protective housing by screws. Two rotating rods are rotatably installed inside the top cover. A first gear is fixedly installed on the outer surface of each rotating rod by welding. The same chain is sleeved on the outer surface of the two first gears. A motor is rotatably installed on the top of one of the rotating rods.

[0007] The water delivery assembly includes a rotating rod rotatably mounted on the bottom of the protective housing. A fixed base is fixedly mounted on the bottom of the rotating rod by welding. A first screw is threaded onto the inner wall of the fixed base. A water delivery groove is opened at the bottom of the fixed base. A water delivery pipe is slidably installed inside the rotating rod.

[0008] The milling assembly includes a connecting seat fixedly mounted at the bottom of a rotating rod by a first screw. The top of the connecting seat has a through hole. A second gear is rotatably mounted on the inner wall of the connecting seat. An outer cover is fixedly mounted on the bottom of the connecting seat by welding. Eight milling cutter bodies are meshed on the outer surface of the second gear. Eight second screws are threaded on the bottom of the connecting seat. A rack is fixedly mounted on the outer surface of each milling cutter body by welding.

[0009] The beneficial effects of this utility model are as follows: This high-speed milling cutter for titanium alloy uses a variable pitch milling cutter. The motor drives the rotating rod to rotate, and the chain drives the water supply component and the milling component to rotate at high speed. At the same time, the second gear installed at the bottom of the connecting seat rotates. A hexagonal opening is opened at the bottom of the gear. The user can adjust the pitch by using the opening to cooperate with the rack fixedly installed on the outer surface of the cutter body.

[0010] To achieve rapid rotation of the milling cutter body:

[0011] The configuration is further defined as follows: the first gear and the motor form a rotating structure through a rotating rod, and the rotating rod and the first gear form a transmission structure through a chain.

[0012] By adopting the above technical solution, the motor will drive the rotating rod mounted at the bottom of the motor to rotate, and the first gear fixedly mounted on the outer surface of the rotating rod, together with the chain, will drive another first gear to rotate, thereby driving the water conveying component and the milling component fixedly mounted at the bottom of the water conveying component to rotate together.

[0013] To reduce the temperature rise of the milling cutter body due to friction during milling:

[0014] The fixed base and the connecting seat are further configured to form a fixed installation structure by means of a first screw.

[0015] By adopting the above technical solution, the connecting seat is fixedly installed at the bottom of the fixed base by the first screw, and in conjunction with the water supply tank opened at the bottom of the fixed base, cooling water is delivered to the inside of the milling assembly.

[0016] To adjust the tooth pitch to adapt to different machining conditions:

[0017] The milling cutter body and the connecting seat are configured to form a rotating structure via a second screw, and the milling cutter body and the second gear are configured to form a transmission structure via a rack.

[0018] By adopting the above technical solution, the user can drive the second gear to rotate through the hexagonal opening at the bottom of the second gear, and in conjunction with the rack fixedly installed on the outer surface of the milling cutter body, thereby driving several milling cutter bodies to rotate and adjust together.

[0019] To reduce the temperature on the outer surface of the milling cutter body:

[0020] The connection seat and the water pipe are configured to form a water supply and cooling structure through a through hole.

[0021] By adopting the above technical solution, cooling water will be delivered to the outer surface of each milling cutter body through the through hole opened on the top of the connecting seat, and the rotating milling assembly as a whole will cause the cooling water to be delivered to the outer surface of each milling cutter body, thereby reducing the temperature of the milling cutter body.

[0022] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the drive component of this utility model;

[0024] Figure 2 This is a schematic diagram of the protective shell of this utility model;

[0025] Figure 3 This is a schematic diagram of the water conveying component of this utility model;

[0026] Figure 4 This is a schematic diagram of the milling component of this utility model.

[0027] In the diagram: 1. Drive assembly; 11. Protective housing; 12. Top cover; 13. Rotating rod; 14. First gear; 15. Chain; 16. Motor; 2. Water supply assembly; 21. Rotating rod; 22. Fixed base; 23. First screw; 24. Water supply tank; 25. Water supply pipe; 3. Milling assembly; 31. Connecting seat; 32. Through hole; 33. Second gear; 34. Outer cover; 35. Milling cutter body; 36. Second screw; 37. Rack. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0029] Please see Figures 1 to 4 A variable pitch milling cutter for high-speed milling of titanium alloy includes a drive assembly 1, a water supply assembly 2 is rotatably mounted on the bottom of the drive assembly 1, and a milling assembly 3 is fixedly mounted on the bottom of the water supply assembly 2 by screws.

[0030] The drive assembly 1 includes a protective housing 11. A top cover 12 is fixedly installed on the top of the protective housing 11 by screws. Two rotating rods 13 are rotatably installed inside the top cover 12. A first gear 14 is fixedly installed on the outer surface of each rotating rod 13 by welding. The same chain 15 is sleeved on the outer surface of the two first gears 14. A motor 16 is rotatably installed on the top of one of the rotating rods 13.

[0031] The water supply assembly 2 includes a rotating rod 21 rotatably mounted on the bottom of the protective housing 11. A fixed base 22 is fixedly mounted on the bottom of the rotating rod 21 by welding. A first screw 23 is threaded on the inner wall of the fixed base 22. A water supply groove 24 is opened on the bottom of the fixed base 22. A water supply pipe 25 is slidably installed inside the rotating rod 21.

[0032] The milling assembly 3 includes a connecting seat 31 fixedly mounted on the bottom of the rotating rod 21 by a first screw 23. The top of the connecting seat 31 has a through hole 32. A second gear 33 is rotatably mounted on the inner wall of the connecting seat 31. An outer cover 34 is fixedly mounted on the bottom of the connecting seat 31 by welding. Eight milling cutter bodies 35 are meshed on the outer surface of the second gear 33. Eight second screws 36 are threaded on the bottom of the connecting seat 31. A rack 37 is fixedly mounted on the outer surface of each milling cutter body 35 by welding.

[0033] In this embodiment, as Figure 2 As shown, the first gear 14 and the motor 16 form a rotating structure through the rotating rod 13, and the rotating rod 13 and the first gear 14 form a transmission structure through the chain 15.

[0034] In this embodiment, as Figure 3 As shown, the fixed base 22 and the fixed base 22 form a fixed installation structure by the first screw 23, and the rotating rod 21 and the water supply pipe 25 form a cooling water supply structure.

[0035] In this embodiment, as Figure 4 As shown, the milling cutter body 35 and the connecting seat 31 form a rotating structure through the second screw 36, and the milling cutter body 35 and the second gear 33 form a transmission structure through the rack 37.

[0036] In this embodiment, as Figure 4 As shown, the connecting seat 31 and the water supply pipe 25 form a water supply and cooling structure through the through hole 32.

[0037] The working process of this variable pitch end mill for high-speed milling of titanium alloys is as follows:

[0038] First, the user needs to start the motor 16 through an external electrical control. The motor 16 will drive the rotating rod 13 to rotate. A first gear 14 is fixedly installed on the outer surface of the rotating rod 13 by welding. Therefore, the motor 16 will also drive the first gear 14 to rotate together. In conjunction with the chain 15, it will drive another first gear 14 to rotate together, providing power for the rotation of the water conveying component 2 and the milling component 3.

[0039] Meanwhile, the rotating rod 21, which is fixedly installed on the inner wall of the first gear 14, will also rotate with the first gear 14. The bottom of the rotating rod 21 is fixedly installed with a fixed base 22, which, together with the first screw 23, fixes the milling assembly 3 to the bottom of the fixed base 22. The water supply pipe 25, which is slidably installed on the inner wall of the rotating rod 21, can deliver cooling water to the inside of the milling assembly 3. The water supply groove 24 at the bottom of the fixed base 22, together with the through hole 32 opened at the top of the connecting seat 31, delivers cooling water to the inside of the milling assembly 3. The rotating milling assembly 3 as a whole delivers cooling water to the outer surface of each milling cutter body 35, thereby reducing the temperature generated on the outer surface of the milling cutter body 35 due to milling.

[0040] If the user needs to adjust the pitch of the variable pitch milling cutter, the user only needs to insert a specific handle into the hexagonal opening at the bottom of the second gear 33 to rotate the second gear 33, thereby driving several milling cutter bodies 35 that mesh with the outer surface of the second gear 33 to adjust the pitch.

[0041] Among them, the model of motor 16 is SGM7J-04AFC6S.

[0042] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above are only preferred embodiments of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A variable-pitch milling cutter for high-speed milling of a titanium alloy, characterized by: Includes a drive assembly (1), a water delivery assembly (2) is rotatably mounted on the bottom of the drive assembly (1), and a milling assembly (3) is fixedly mounted on the bottom of the water delivery assembly (2) by screws. The drive assembly (1) includes a protective shell (11), and a top cover (12) is fixedly installed on the top of the protective shell (11) by screws. Two rotating rods (13) are rotatably installed inside the top cover (12). A first gear (14) is fixedly installed on the outer surface of each rotating rod (13) by welding. The same chain (15) is sleeved on the outer surface of the two first gears (14). A motor (16) is rotatably installed on the top of one of the rotating rods (13). The water supply assembly (2) includes a rotating rod (21) rotatably mounted on the bottom of the protective shell (11). A fixed base (22) is fixedly mounted on the bottom of the rotating rod (21) by welding. A first screw (23) is threaded on the inner wall of the fixed base (22). A water supply groove (24) is opened on the bottom of the fixed base (22). A water supply pipe (25) is slidably mounted inside the rotating rod (21). The milling assembly (3) includes a connecting seat (31) fixedly mounted on the bottom of the rotating rod (21) by a first screw (23). The top of the connecting seat (31) has a through hole (32). A second gear (33) is rotatably mounted on the inner wall of the connecting seat (31). An outer cover (34) is fixedly mounted on the bottom of the connecting seat (31) by welding. Eight milling cutter bodies (35) are meshed on the outer surface of the second gear (33). Eight second screws (36) are threaded on the bottom of the connecting seat (31). A rack (37) is fixedly mounted on the outer surface of each milling cutter body (35) by welding.

2. A variable pitch cutter for high speed milling of a titanium alloy as claimed in claim 1, wherein: The first gear (14) and the motor (16) form a rotating structure through the rotating rod (13), and the rotating rod (13) and the first gear (14) form a transmission structure through the chain (15).

3. A variable pitch cutter for high speed milling of a titanium alloy as claimed in claim 1, wherein: The fixed base (22) and the connecting seat (31) form a fixed installation structure by the first screw (23), and the rotating rod (21) and the water supply pipe (25) form a cooling water supply structure.

4. The variable pitch milling cutter for high-speed milling of titanium alloys as described in claim 1, characterized in that: The milling cutter body (35) and the connecting seat (31) form a rotating structure through the second screw (36), and the milling cutter body (35) and the second gear (33) form a transmission structure through the rack (37).

5. A variable pitch milling cutter for high-speed milling of titanium alloys as described in claim 1, characterized in that: The connecting seat (31) and the water supply pipe (25) form a water supply and cooling structure through the through hole (32).

Images