Machine clamping type groove milling cutter

Abstract

The utility model discloses a machine clamping type groove milling cutter which comprises a cutter body, a cutter head rod is integrally formed at one end of the cutter body, a groove is formed in one end of the cutter head rod, a cutter pad is arranged in the groove, and a pressing plate is arranged in the groove, so that the cutter head rod can be clamped in the groove. The pressing notch tightly attached to the upper surface of the blade is formed in the bottom of the pressing plate, it can be guaranteed that the blade is kept at the stable position in the machining process through tight attachment of the pressing notch and the upper surface of the blade, the risk that the blade moves or falls off due to vibration or impact is reduced, and the stable blade position can guarantee improvement of the machining precision; in addition, the blade is always kept at a stable position, and the cutting edge, located in the groove, of the blade cannot collide with the interior of the groove, so that the problem that the cutting edge to be replaced is scrapped in advance is effectively solved, and the service life of the blade is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of milling tool technology, in particular to a machine-clamped groove milling cutter. Background Art

[0002] In the mechanical manufacturing and precision machining industries, milling cutters are an indispensable machining tool used to cut grooves, holes and surfaces of various shapes and sizes on workpieces. With the continuous development of machining technology and the increasing requirements for machining accuracy, traditional milling cutters can no longer meet the needs of modern manufacturing in certain specific machining tasks, especially in situations where high-precision cutting of small grooves is required. Traditional milling cutters are often unable to cope with the task due to insufficient cutting stability and low cutting accuracy.

[0003] For example, a machine-clamped groove milling cutter (announcement number: CN212384690U), the device includes a cutter body; and a blade, a first end of which is configured to be connected to the cutter body, and a second end of which extends from the cutter body; wherein, one side of the second end of the blade includes a first cutting edge and a free-running cutting edge at a non-working portion on the other side, the center of the first cutting edge is eccentrically arranged relative to the rotation center of the cutter body, and the cutting edge at the non-working portion on the other side is free-running in the form of a large chamfer. The milling cutter of this application can meet the requirements of stable processing, the blade can be used multiple times and the cutter body can be reused, the blade is easy to replace, and the repeat positioning accuracy and processing accuracy can be continuously guaranteed.

[0004] However, the device still has the following defects:

[0005] The blade of the device is arranged in a diamond shape, and the cutting edge to be replaced is located inside the groove, but the inside of the groove lacks a mechanism to protect the cutting edge to be replaced, resulting in that in actual use, the cutting edge to be replaced may be squeezed against the inner wall of the groove, which may cause the cutting edge to be scrapped prematurely and be difficult to perform subsequent processing operations, resulting in blade waste and increased workpiece processing costs. Therefore, we need to propose a machine-clamped groove milling cutter. Utility Model Content

[0006] The purpose of the utility model is to provide a machine-clamped groove milling cutter, aiming to solve the problem that the interior of the groove in the prior art lacks a mechanism to protect the cutting edge to be replaced, resulting in that in actual use, the cutting edge to be replaced may be squeezed against the inner wall of the groove, which may cause the cutting edge to be scrapped prematurely and be difficult to perform subsequent processing operations, resulting in blade waste and increased workpiece processing costs.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A machine-clamped groove milling cutter comprises a cutter body, one end of which is integrally formed with a cutter head rod, one end of which is provided with a groove, a cutter pad is provided inside the groove, a blade is provided at the top of the cutter pad, the blade is arranged in a diamond shape as a whole, a pressure plate is provided at the top of the cutter head, a clamping notch matched with the blade is provided at the bottom of the pressure plate, the top of the blade fits tightly with the clamping notch, a clamping piece is fixed to the top of the cutter head rod by screw bolts, and the bottom of the clamping piece abuts against the top of the pressure plate.

[0009] Preferably, the knife pad is fixed by bolting a center pin, a truncated cone limit block is fixedly sleeved on the outer wall of the center pin, a truncated cone hole matching the truncated cone limit block is opened on the knife pad, and the truncated cone limit block is inserted into the inside of the truncated cone hole.

[0010] Preferably, two groups of through holes matched with the center pin are opened on the top of the blade, the center pin is inserted into the inside of the through hole, and the bottom of the blade abuts against the top of the truncated table limit block.

[0011] Preferably, a supporting portion is integrally formed on a side wall of the cutter head rod, a first threaded blind hole is formed on the top of the supporting portion, and the bottom of the center pin is threadedly connected to the inside of the first threaded blind hole.

[0012] Preferably, the groove is arranged in a V-shape, and barb protrusions are respectively arranged on the inner walls on both sides of the groove, and the side walls on both sides of the blade are tightly fitted with the two groups of barb protrusions respectively.

[0013] Preferably, a positioning column is fixedly connected to the bottom of the clamping member, a positioning hole matched with the positioning column is opened on the top of the pressing plate, and the bottom end of the positioning column is inserted into the interior of the positioning hole.

[0014] Preferably, the top of the clamping piece is provided with three groups of threaded through holes compatible with the screws, the top of the cutter head rod is provided with three groups of second threaded blind holes compatible with the threaded through holes, and the screws are threadedly connected to the inside of the threaded through holes and the second threaded blind holes.

[0015] Preferably, the clamping piece is arranged in a T-shape, and the clamping piece and the screw are both made of high-speed steel.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model arranges a pressure plate inside the groove, and opens a clamping notch at the bottom of the pressure plate that fits tightly with the upper surface of the blade. The tight fit between the clamping notch and the upper surface of the blade can ensure that the blade maintains a stable position during the machining process, reducing the risk of blade displacement or falling off due to vibration or impact. The stable blade position can ensure improved machining accuracy, making the size and shape of the machined workpiece more precise. In addition, the blade that always maintains a stable position, the cutting edge of which is located inside the groove will not collide with the inside of the groove, thereby effectively solving the problem of premature scrapping of the cutting edge to be replaced, which is conducive to further improving the service life of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the cutter head rod, groove and blade of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the cutter head rod, blade and pressure plate of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the blade and the through hole of the utility model.

[0022] In the figure: 1. tool body; 2. tool head rod; 3. groove; 4. tool pad; 5. blade; 6. pressure plate; 7. clamping notch; 8. clamping member; 9. center pin; 10. truncated cone limit block; 11. truncated cone hole; 12. through hole; 13. supporting part; 14. first threaded blind hole; 15. barb protrusion; 16. positioning column; 17. positioning hole; 18. threaded through hole; 19. second threaded blind hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 , the utility model provides a technical solution:

[0025] A machine-clamped groove milling cutter comprises a cutter body 1, one end of the cutter body 1 is integrally provided with a cutter head rod 2, one end of the cutter head rod 2 is provided with a groove 3, a cutter pad 4 is provided inside the groove 3, a blade 5 is provided at the top of the groove 3 and the blade 5 is arranged in a diamond shape as a whole, a pressure plate 6 is provided at the top of the groove 3 and the bottom of the pressure plate 6 is provided with a clamping notch 7 matched with the blade 5, the top of the blade 5 is tightly fitted with the clamping notch 7, a clamping piece 8 is fixed to the top of the cutter head rod 2 by screw bolts, and the bottom of the clamping piece 8 abuts against the top of the pressure plate 6.

[0026] The utility model arranges a pressure plate 6 inside the groove 3, and opens a clamping notch 7 at the bottom of the pressure plate 6 that fits tightly with the upper surface of the blade 5. The tight fit between the clamping notch 7 and the upper surface of the blade 5 can ensure that the blade 5 maintains a stable position during the processing, reducing the risk of blade displacement or falling off due to vibration or impact. The stable position of the blade 5 can ensure improved processing accuracy, making the size and shape of the processed workpiece more accurate.

[0027] In addition, the blade 5 always maintains a stable position, and its cutting edge located inside the groove 3 will not collide with the inside of the groove 3, thereby effectively solving the problem of premature scrapping of the cutting edge to be replaced, which is conducive to further improving the service life of the blade 5;

[0028] The knife pad 4 is fixed by bolting the center pin 9, and a truncated cone limit block 10 is fixedly sleeved on the outer wall of the center pin 9. A truncated cone hole 11 matching the truncated cone limit block 10 is opened on the knife pad 4, and the truncated cone limit block 10 is inserted into the inside of the truncated cone hole 11. Two groups of through holes 12 matching the center pin 9 are opened on the top of the blade 5, and the center pin 9 is inserted into the inside of the through hole 12, and the bottom of the blade 5 abuts against the top of the truncated cone limit block 10.

[0029] By setting the center pin 9, the truncated cone stopper 10 and the truncated cone hole 11 for coordinated use, it is ensured that the position of the blade 5 is stable and accurate when the blade 5 rotates at high speed or performs complex processing, thereby improving the processing accuracy. The design of the truncated cone stopper 10 makes the installation of the blade 5 on the cutter head rod 2 more stable. When the center pin 9 is inserted into the truncated cone hole 11 and cooperates with the truncated cone stopper 10, they jointly form a stable structure, which effectively reduces the vibration and deviation of the milling cutter during the processing and improves the stability of the processing process.

[0030] A supporting portion 13 is integrally formed on one side wall of the cutter head rod 2 , a first threaded blind hole 14 is formed on the top of the supporting portion 13 , and the bottom of the center pin 9 is threadedly connected to the inside of the first threaded blind hole 14 .

[0031] The knife pad 4 serves as a buffer layer between the blade 5 and the cutter head rod 2, which can effectively reduce the impact and vibration of the blade 5 during the processing. This buffering effect can reduce the stress and wear of the blade 5, thereby extending the service life of the blade 5.

[0032] In addition, the knife pad 4 usually has good flatness and hardness, which can ensure that the blade 5 maintains a stable cutting state during the processing, which helps to reduce the processing error caused by the position change or vibration of the blade 5 and improve the processing accuracy and product quality;

[0033] The groove 3 is V-shaped, and the inner walls on both sides of the groove 3 are respectively provided with barb protrusions 15. The side walls on both sides of the blade 5 are respectively tightly fitted with the two groups of barb protrusions 15. By providing the barb protrusions 15, the blade 5 is further positioned, which is conducive to further improving the processing accuracy.

[0034] The bottom of the pressing member 8 is fixedly connected with a positioning column 16, and the top of the pressing plate 6 is provided with a positioning hole 17 adapted to the positioning column 16. The bottom end of the positioning column 16 is inserted into the inside of the positioning hole 17. By setting the positioning column 16 and the positioning hole 17 in coordination, the pressing plate 6 is positioned.

[0035] The top of the clamping piece 8 is provided with three groups of threaded through holes 18 compatible with the screws, and the top of the cutter head rod 2 is provided with three groups of second threaded blind holes 19 compatible with the threaded through holes 18. The screw threads are connected to the inside of the threaded through holes 18 and the second threaded blind holes 19.

[0036] The addition of the clamping member 8 makes the position of the pressing plate 6 on the cutter head rod 2 more accurate and stable, ensures the accurate positioning of the blade 5 during the processing, and improves the processing accuracy and product quality. In addition, the clamping member 8 connected by bolting makes the installation and replacement process of the pressing plate 6 simple and quick. When it is necessary to replace the blade 5 or adjust the position of the blade 5, it is only necessary to loosen the clamping member 8 to easily complete the operation.

[0037] The clamping piece 8 is arranged in a T shape. The clamping piece 8 and the screw are both made of high-speed steel. The material of the blade 5 can also be high-speed steel. High-speed steel (HSS) is a tool steel with high hardness, high wear resistance and high heat resistance, also known as high-speed tool steel or sharp steel, commonly known as white steel. The hardness of high-speed steel is usually higher than other tool steels, which can keep the cutting edge sharp and durable. At the same time, it also has high wear resistance and can withstand the friction and wear generated during high-speed cutting. In addition, high-speed steel can still maintain its hardness and cutting performance at high temperatures, which makes it suitable for high-speed cutting and high feed rate processing.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A machine-clamped groove milling cutter, characterized in that: include: A knife body (1), wherein one end of the knife body (1) is integrally provided with a knife head rod (2); A groove (3) is provided at one end of the cutter head rod (2), a cutter pad (4) is arranged inside the groove (3), a blade (5) is arranged on the top of the cutter pad (4) in the groove (3), and the blade (5) is arranged in a rhombus shape as a whole; A pressure plate (6) is arranged in the groove (3) and located at the top of the blade (5); a clamping notch (7) matching the blade (5) is provided at the bottom of the pressure plate (6); the top of the blade (5) fits tightly with the clamping notch (7); a clamping piece (8) is fixed to the top of the cutter head rod (2) by screw bolts; the bottom of the clamping piece (8) abuts against the top of the pressure plate (6).

2. The machine-clamped groove milling cutter according to claim 1, characterized in that: The knife pad (4) is bolted and fixed by a center pin (9); a truncated cone limit block (10) is fixedly sleeved on the outer wall of the center pin (9); a truncated cone hole (11) matching the truncated cone limit block (10) is opened on the knife pad (4); and the truncated cone limit block (10) is inserted into the interior of the truncated cone hole (11).

3. A machine-clamped groove milling cutter according to claim 2, characterized in that: The top of the blade (5) is provided with two groups of through holes (12) adapted to the center pin (9), the center pin (9) is inserted into the inside of the through holes (12), and the bottom of the blade (5) abuts against the top of the truncated table limit block (10).

4. The machine-clamped groove milling cutter according to claim 3, characterized in that: A supporting portion (13) is integrally formed on a side wall of the cutter head rod (2), a first threaded blind hole (14) is provided at the top of the supporting portion (13), and the bottom of the center pin (9) is threadedly connected to the inside of the first threaded blind hole (14).

5. The machine-clamped groove milling cutter according to claim 1, characterized in that: The groove (3) is arranged in a V-shape, and barb protrusions (15) are respectively arranged on the inner walls on both sides of the groove (3), and the side walls on both sides of the blade (5) are respectively tightly fitted with the two groups of barb protrusions (15).

6. The machine-clamped groove milling cutter according to claim 1, characterized in that: The bottom of the clamping member (8) is fixedly connected to a positioning column (16), the top of the pressure plate (6) is provided with a positioning hole (17) adapted to the positioning column (16), and the bottom end of the positioning column (16) is inserted into the interior of the positioning hole (17).

7. The machine-clamped groove milling cutter according to claim 1, characterized in that: The top of the clamping member (8) is provided with three groups of threaded through holes (18) compatible with the screws, the top of the cutter head rod (2) is provided with three groups of second threaded blind holes (19) compatible with the threaded through holes (18), and the screws are threadedly connected to the inside of the threaded through holes (18) and the second threaded blind holes (19).

8. The machine-clamped groove milling cutter according to claim 7, characterized in that: The pressing member (8) is arranged in a T-shape.

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