Milling cutter structure

Abstract

The utility model discloses a milling cutter structure which comprises an assembling seat, a circular vertical groove is formed in the bottom of the assembling seat, a cutter bar is connected to the inner wall of the circular vertical groove in a sliding mode, a milling cutter body is fixedly connected to the bottom of the cutter bar, four key grooves are formed in the inner wall of the circular vertical groove, and key blocks are connected to the inner walls of the four key grooves in a sliding mode. And one ends of the four key blocks are fixedly connected with the outer wall of the cutter bar, a rectangular groove is formed in the outer wall of the assembling base, and two springs are fixedly connected into the rectangular groove. By arranging the circular vertical groove, the key grooves, the key blocks, the rectangular groove, the spring, the positioning column, the concentric-square-shaped block, the through hole, the straight push rod, the circular stop block and the circular push block, the milling cutter body is quickly replaced under the condition that the overall structural strength is not affected, meanwhile, the contact area of the milling cutter body is increased through cooperation of the key grooves and the key blocks, and therefore the stress area is increased, and the service life of the milling cutter body is prolonged. And deformation caused by local stress is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of balancing machines, in particular to a milling cutter structure. Background Art

[0002] A balancing machine is an instrument used to measure and correct rotor imbalance. It does this by reducing the vibration generated during rotor rotation or the vibration acting on the bearings, thereby reducing vibration, improving performance, and improving product quality. In the operation of a balancing machine, the milling cutter, as a cutting tool, corrects the rotor's imbalance by removing the unbalanced mass on the rotor. This correction method involves removing weight or adding counterweights to the rotor to change the rotor's mass distribution, reducing the rotor vibration caused by the eccentric centrifugal force of the center of mass or the dynamic load acting on the bearings to within an allowable range, thereby achieving the purpose of smooth engine operation. There are various types of milling cutters, including cylindrical milling cutters, face milling cutters, end mills, three-sided milling cutters, angle milling cutters, saw blade milling cutters, etc. Each type of milling cutter has its specific purpose and application scenario.

[0003] A search revealed patent document with publication number CN219852289U, which discloses a milling cutter mounting structure specifically related to the field of mechanical processing technology. The invention comprises a cutter bar having an internal mounting slot, within which a blade is detachably connected. Opposite screw holes are formed on either side of the mounting slot, each threadedly connected to a fastening bolt. Two fastening bolts are threadedly connected to the blade. A fixing rod is provided on the distal sidewall of the mounting slot, and a spring is fixedly connected to the fixing rod. The free end of the spring abuts against the blade. The invention addresses the problems of slow replacement speed and low part processing efficiency associated with existing milling cutters during installation.

[0004] When the above-mentioned blade is actually used, since there is a threaded hole inside, during the drilling and milling process, the force position is transmitted to the threaded hole and contacts the blade. When encountering vibration or a large drilling depth, it is easy to cause the threaded connection to loosen or deform. In severe cases, it may lead to the situation that the blade cannot be replaced and detached. At the same time, the existing drill chuck adopts a wrapping clamping method. When encountering the above situation, the blade is also prone to slipping. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a milling cutter structure.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A milling cutter structure includes an assembly seat, a circular vertical groove is provided at the bottom of the assembly seat, the inner wall of the circular vertical groove is slidably connected to a tool rod, the bottom of the tool rod is fixedly connected to a milling cutter body, the inner wall of the circular vertical groove is provided with four key grooves, the inner walls of the four key grooves are slidably connected to key blocks, one end of the four key blocks is fixedly connected to the outer wall of the tool rod, the outer wall of the assembly seat is provided with a rectangular groove, the inside of the rectangular groove is fixedly connected to two springs, one end of the two springs is fixedly connected to the same circular block, the outer wall of the tool rod is provided with an annular groove, the inner wall of the annular groove contacts the outer wall of the circular block, and the outer wall of the assembly seat is provided with an unlocking mechanism.

[0008] Preferably, the unlocking mechanism includes a straight push rod, a through hole is opened on the outer wall of the assembly seat, the inner wall of the through hole is slidably connected to the outer wall of the straight push rod, and a circular stop block is provided on the outer wall thread sleeve of the straight push rod. The milling cutter body can be quickly replaced by setting the unlocking mechanism.

[0009] Preferably, one end of the straight push rod is fixedly connected to a circular push block, and the circular push block is provided to facilitate the movement of the straight push rod.

[0010] Preferably, the outer wall of the circular block is slidably connected to the inner wall of the rectangular groove, the inner wall of the circular block is beveled, and the rectangular groove is provided to assist the circular block in performing linear pushing.

[0011] Preferably, the outer wall of the circular block is fixedly connected to two positioning columns, and one end of the two springs is respectively sleeved on the outer walls of the two positioning columns. The positioning columns are provided to ensure that the spring is stable when compressed.

[0012] Preferably, a V-shaped clamp is fixedly connected to the outer wall of the assembly seat, and the cooling pipe is clamped and fixed by arranging the V-shaped clamp.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] This solution completes the rapid replacement of the milling cutter body without affecting the overall structural strength by providing circular vertical grooves, keyways, key blocks, rectangular grooves, springs, positioning columns, circular blocks, through holes, straight push rods, circular stop blocks and circular push blocks. At the same time, by cooperating with multiple keyways and key blocks, the contact area is increased, thereby increasing the force-bearing area and avoiding deformation caused by local force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the specific implementation methods. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a three-dimensional structural diagram of a milling cutter structure proposed by the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of a milling cutter structure proposed in the present invention;

[0018] Figure 3 A milling cutter structure proposed in this utility model Figure 2 A schematic diagram of the enlarged structure of part A;

[0019] Figure 4 This is a partial three-dimensional structural diagram of a milling cutter structure proposed by the utility model.

[0020] In the figure: 1. Assembly seat; 2. Cutter bar; 3. Milling cutter body; 4. Circular vertical groove; 5. Keyway; 6. Key block; 7. Rectangular groove; 8. Spring; 9. Positioning column; 10. Circular block; 11. Through hole; 12. Straight push rod; 13. Circular stop block; 14. Circular push block; 15. V-clip. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Depend on Figures 1-4 As shown, a milling cutter structure is involved, including an assembly seat 1, a circular vertical groove 4 is opened at the bottom of the assembly seat 1, the inner wall of the circular vertical groove 4 is slidably connected to a tool rod 2, the tool rod 2 slides into the circular vertical groove 4, and is limited to the left and right. The bottom of the tool rod 2 is fixedly connected to a milling cutter body 3, and the milling cutter body 3 and the tool rod 2 are designed as an integral whole.

[0023] Four key slots 5 are provided on the inner wall of the circular vertical slot 4. The inner walls of the four key slots 5 are slidably connected with key blocks 6. One end of the four key blocks 6 is fixedly connected to the outer wall of the tool rod 2. The key blocks 6 cooperate with the key slots 5 to increase the contact area between the tool rod 2 and the assembly seat 1, and the key slots 5 and key blocks 6 can be added.

[0024] A rectangular groove 7 is provided on the outer wall of the assembly seat 1, and two springs 8 are fixedly connected to the inside of the rectangular groove 7. One end of the two springs 8 is fixedly connected to the same circular block 10. The two springs 8 elastically support the circular block 10 to ensure that its inner wall is squeezed into the annular groove of the knife rod 2. The outer wall of the circular block 10 is fixedly connected to two positioning columns 9, and one end of the two springs 8 is respectively sleeved on the outer walls of the two positioning columns 9.

[0025] The outer wall of the circular block 10 is slidably connected to the inner wall of the rectangular groove 7. The inner wall of the circular block 10 is beveled. An annular groove is provided on the outer wall of the knife rod 2. The inner wall of the annular groove contacts the outer wall of the circular block 10. The top inner wall cross-section of the annular groove is flat, and the bottom inner wall cross-section is beveled. The overall structure is annular. After the circular block 10 is located in the annular groove, the top of the circular block 10 contacts the bottom inner wall to prevent the knife rod 2 from moving downward under force.

[0026] An unlocking mechanism is provided on the outer wall of the assembly seat 1, and the unlocking mechanism includes a straight push rod 12. A through hole 11 is opened on the outer wall of the assembly seat 1. The inner wall of the through hole 11 is slidably connected to the outer wall of the straight push rod 12. The through hole 11 assists the straight push rod 12 to move left and right. A circular stop block 13 is provided on the outer wall thread of the straight push rod 12. The circular stop block 13 rotates on the straight push rod 12 through a threaded connection, forming a limit on the moving distance of the circular push block 14 to avoid the knife from being accidentally touched and caused by the circular push block 14. One end of the straight push rod 12 is fixedly connected to the circular push block 14, and the outer wall of the assembly seat 1 is fixedly connected to a V-shaped clamp 15.

[0027] Working principle: When in use, the assembly seat 1 is fixed to the driving end of the milling equipment in the balancing machine. When replacing the milling cutter body 3, the circular stop block 13 is rotated to release the movement restriction of the circular push block 14. The circular push block 14 is pressed by the thumb to drive the straight push rod 12 to move to the left. The straight push rod 12 drives the circular block 10 to move to the left, overcoming the elastic force of the two springs 8 and moving it a certain distance to the left. At this time, the inclined surface of the circular block 10 no longer contacts the annular groove on the tool rod 2, releasing the position fixation of the tool rod 2, sliding the tool rod 2 out of the circular vertical groove 4, and the four key blocks 6 slide out of the four key grooves 5 respectively, to complete the disassembly of the milling cutter body 3. This process is simple to operate and can complete the rapid replacement of the milling cutter body 3 without affecting the overall structural strength. At the same time, when in use, the milling cutter body 3 rotates at high speed, and the four key grooves 5 contact the four key blocks 6 to increase their contact area.

[0028] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A milling cutter structure, comprising an assembly seat (1), characterized in that: The bottom of the assembly seat (1) is provided with a circular vertical groove (4), the inner wall of the circular vertical groove (4) is slidably connected to the tool rod (2), the bottom of the tool rod (2) is fixedly connected to the milling cutter body (3), the inner wall of the circular vertical groove (4) is provided with four key grooves (5), the inner walls of the four key grooves (5) are slidably connected to key blocks (6), one end of the four key blocks (6) is fixedly connected to the outer wall of the tool rod (2), the outer wall of the assembly seat (1) is provided with a rectangular groove (7), the interior of the rectangular groove (7) is fixedly connected to two springs (8), one end of the two springs (8) is fixedly connected to the same circular block (10), the outer wall of the tool rod (2) is provided with an annular groove, the inner wall of the annular groove is in contact with the outer wall of the circular block (10), and the outer wall of the assembly seat (1) is provided with an unlocking mechanism.

2. A milling cutter structure according to claim 1, characterized in that: The unlocking mechanism comprises a straight push rod (12), the outer wall of the assembly seat (1) is provided with a through hole (11), the inner wall of the through hole (11) is slidably connected to the outer wall of the straight push rod (12), and the outer wall of the straight push rod (12) is threadedly sleeved with a circular stop block (13).

3. A milling cutter structure according to claim 2, characterized in that: One end of the straight push rod (12) is fixedly connected to a circular push block (14).

4. A milling cutter structure according to claim 1, characterized in that: The outer wall of the circular block (10) is slidably connected to the inner wall of the rectangular groove (7), and the inner wall of the circular block (10) is beveled.

5. The milling cutter structure according to claim 1, characterized in that: The outer wall of the circular block (10) is fixedly connected to two positioning columns (9), and one end of the two springs (8) is respectively sleeved on the outer walls of the two positioning columns (9).

6. The milling cutter structure according to claim 1, characterized in that: A V-shaped clip (15) is fixedly connected to the outer wall of the assembly seat (1).

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