Hard alloy milling cutter

Abstract

The utility model belongs to the technical field of machining cutters, and particularly relates to a hard alloy milling cutter which comprises a cutter handle part and a cutter head part, and further comprises an adapter rod, a first connecting flange, a second connecting flange, a third connecting flange, a fourth connecting flange, a fourth connecting flange and a fifth connecting flange, and the adapter rod is fixedly connected with one end, far away from the cutter head part, of the cutter handle part; the clamping rod is used for being fixedly connected with a tool apron of a machine tool, and a second connecting flange matched with the first connecting flange is fixed to the clamping rod; a locking bolt; the locking nut is mounted at the extending end of the locking bolt in a thread screwing manner; according to the clamping device, the adapter rod and the clamping rod are fixedly connected through cooperation of the first connecting flange, the second connecting flange, the locking bolt and the locking nut, on the premise that installation stability is guaranteed, the clamping rod can be detached and replaced conveniently, different clamping rods can be replaced conveniently according to different use scenes, and the application range is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining tools, and in particular relates to a hard alloy milling cutter. Background Art

[0002] A milling cutter is a rotating tool used for milling processing. It has one or more teeth. During the milling process, each tooth cuts off the workpiece's excess in turn and intermittently. Milling cutters are mainly used to process planes, steps, grooves, formed surfaces and cut off workpieces on milling machines. According to different classification standards, milling cutters can be divided into different types. For example, according to the structure, they can be divided into integral type, insert type and indexable type. According to the purpose, they can be divided into cylindrical milling cutters, face milling cutters, end mills, etc. Most milling cutters on the market are made of cemented carbide.

[0003] At present, in order to reduce the cost of use, carbide milling cutters with a split design of tool holder and tool head are gradually used. When the tool head is severely worn, only the tool head needs to be replaced, and the tool holder that meets the use conditions can continue to be used.

[0004] It was retrieved from the prior art that a Chinese utility model patent with authorization announcement number CN221715709U discloses "a special carbide milling cutter for aluminum substrates", which includes a shank portion, a neck portion is provided above the shank portion, a cutting portion is fixedly connected to the top of the neck, a fastening nut is provided between the shank portion and the neck, the fastening nut is in contact with the bottom of the neck, a connecting column is fixedly connected to the bottom of the neck, a first thread is fixedly connected to the outer surface of the connecting column, the upper end of the connecting column is threadedly connected to the bottom of the neck, and a connecting component is provided at the bottom of the neck.

[0005] Although the carbide milling cutters in the prior art, including those mentioned above, are easy to disassemble and replace the cutter heads, they cannot match different installation scenarios in actual use. This is because milling cutters of different specifications have different diameters, and the installation methods in different usage scenarios are also different. The carbide milling cutters in the prior art can only be fixed on the machine tool tool holder using a tool holder, which has very high usage limitations.

[0006] In order to solve the above problems, the utility model proposes a cemented carbide milling cutter. Utility Model Content

[0007] In order to solve the above problems existing in the prior art, the utility model provides a cemented carbide milling cutter, which has the characteristics of being easy to use and having a wide range of applications.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a cemented carbide milling cutter, comprising a shank portion and a cutter head detachably connected to one end of the shank portion, and further comprising:

[0009] A transfer rod, the transfer rod being fixedly connected to an end of the tool handle away from the tool head, and a first connecting flange being fixed to the end of the transfer rod away from the tool handle;

[0010] A clamping rod, the clamping rod being used for fixed connection with the tool holder of the machine tool, and a second connecting flange matching the first connecting flange being fixed on the clamping rod;

[0011] Locking bolts, wherein a plurality of the locking bolts are evenly spaced along the circumferential direction and pass through the second connecting flange and the first connecting flange;

[0012] A locking nut is installed on the protruding end of the locking bolt by screwing.

[0013] As a preferred technical solution of the utility model, it also includes:

[0014] A square connecting block is fixed to the end of the cutter head, and a No. 1 threaded hole is processed on the outer wall of the square connecting block, and a No. 1 square connecting groove for the square connecting block to be inserted is processed at one end of the handle;

[0015] A countersunk screw is processed with a countersunk hole on the shank portion, and the countersunk screw passes through the countersunk hole and is screwed into the No. 1 threaded hole by threading.

[0016] As a preferred technical solution of the present invention, the outer wall of the square connecting block abuts against the inner wall of the No. 1 square connecting groove.

[0017] As a preferred technical solution of the present invention, four countersunk screws are evenly spaced along the circumferential direction.

[0018] As a preferred technical solution of the utility model, it also includes:

[0019] A square connecting rod is fixed to the end of the handle away from the blade head, and a plurality of positioning grooves are formed on the outer wall of the square connecting rod and are evenly spaced along the length thereof. A second square connecting groove is formed on the adapter rod for the square connecting rod to be inserted into;

[0020] An adjusting bolt is processed with a No. 2 threaded hole on the adapter rod, and the adjusting bolt is screwed into the No. 2 threaded hole by thread engagement, and the end of the adjusting bolt is embedded in the positioning groove.

[0021] As a preferred technical solution of the present invention, the outer wall of the square connecting rod abuts against the inner wall of the No. 2 square connecting groove.

[0022] As a preferred technical solution of the present invention, four adjusting bolts are evenly spaced along the circumferential direction.

[0023] As a preferred technical solution of the present invention, the second connecting flange and the clamping rod are forged integral components.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] In the utility model, the adapter rod and the clamping rod are fixedly connected by the cooperation of the No. 1 connecting flange, the No. 2 connecting flange, the locking bolt and the locking nut. While ensuring stable installation, it is also convenient to disassemble and replace the clamping rod, and it is convenient to replace different clamping rods according to different usage scenarios, and it has a wide range of applications.

[0026] Other additional advantages and beneficial effects of the present invention will be partially given in the following description, and partially become obvious from the following description, or be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a structural diagram of the utility model;

[0029] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0030] Figure 3 For this utility model Figure 2 A in the figure shows the enlarged structural diagram;

[0031] Figure 4 For this utility model Figure 2 A schematic diagram of the structure at point B in FIG.

[0032] Figure 5 For this utility model Figure 2 The enlarged structural diagram at C in FIG.

[0033] In the figure: 1. Tool handle; 11. Square connecting groove No. 1; 12. Countersunk hole; 13. Square connecting rod; 131. Positioning groove; 2. Tool head; 21. Square connecting block; 211. Threaded hole No. 1; 3. Adapter rod; 31. Square connecting groove No. 2; 32. Threaded hole No. 2; 33. Connecting flange No. 1; 4. Clamping rod; 41. Connecting flange No. 2; 5. Countersunk screw; 6. Adjusting bolt; 7. Locking bolt; 8. Locking nut. DETAILED DESCRIPTION

[0034] The following will be combined with the 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.

[0035] See also Figure 1-Figure 5 The utility model provides the following technical solutions: a carbide milling cutter, comprising a shank portion 1 and a cutter head portion 2 detachably connected to one end of the shank portion 1, and also comprising: a transfer rod 3, a clamping rod 4, a locking bolt 7 and a locking nut 8.

[0036] Further, by Figure 1 、 Figure 2 and Figure 5 As shown, in this embodiment, the adapter rod 3 is fixedly connected to the end of the tool handle 1 away from the tool head 2, and a No. 1 connecting flange 33 is fixed on the end of the adapter rod 3 away from the tool handle 1, the clamping rod 4 is used to be fixedly connected to the machine tool tool holder, and a No. 2 connecting flange 41 matching the No. 1 connecting flange 33 is fixed on the clamping rod 4, a plurality of locking bolts 7 are evenly spaced along the circumferential direction, and the locking bolts 7 pass through the No. 2 connecting flange 41 and the No. 1 connecting flange 33, and the locking nut 8 is installed on the protruding end of the locking bolt 7 by threaded engagement. After adopting the above scheme, when in use, the clamping rod 4 is fixedly connected to the output shaft of the machine tool, and the output shaft of the machine tool controls the operation of the tool head 2. In the utility model, the adapter rod 3 and the clamping rod 4 are fixedly connected by the cooperation of the No. 1 connecting flange 33, the No. 2 connecting flange 41, the locking bolt 7 and the locking nut 8. On the premise of ensuring stable installation, it is also convenient to disassemble and replace the clamping rod 4, and it is convenient to replace different clamping rods 4 according to different usage scenarios, and it has a wide range of applications.

[0037] Preferably, by Figure 1-Figure 3As shown, in this embodiment, it also includes: a square connecting block 21 and a countersunk screw 5. The square connecting block 21 is fixed to the end of the cutter head 2, and a No. 1 threaded hole 211 is processed on the outer wall of the square connecting block 21. A No. 1 square connecting groove 11 for the square connecting block 21 to be embedded is processed at one end of the shank portion 1, and a countersunk hole 12 is processed on the shank portion 1. The countersunk screw 5 passes through the countersunk hole 12 and is screwed into the No. 1 threaded hole 211 by threading. After adopting the above scheme, when installing the cutter head 2, the square connecting block 21 is first embedded in the No. 1 square connecting groove 11, and then the countersunk screw 5 is tightened. The square connecting block 21 is locked by the countersunk screw 5, so that the cutter head 2 can be stably installed. On the premise of ensuring the stable installation of the cutter head 2, it is also convenient to replace the cutter head 2 that is severely worn.

[0038] It should be noted that after the square connecting block 21 is embedded in the No. 1 square connecting groove 11 , the square structure can effectively prevent the cutter head 2 and the handle 1 from rotating relative to each other, and has high stability.

[0039] Preferably, by Figure 1-Figure 3 As shown, in this embodiment, the outer wall of the square connecting block 21 abuts against the inner wall of the square connecting groove No. 1 1. After adopting the above scheme, after the square connecting block 21 is embedded in the square connecting groove No. 1 1, the cutter head 2 and the handle part 1 are tightly connected, with high stability, avoiding relative shaking between the cutter head 2 and the handle part 1 during operation, thereby improving safety.

[0040] Optionally, by Figure 1-Figure 3 As shown, in this embodiment, four countersunk screws 5 are evenly spaced along the circumferential direction, and the locking stability is high, ensuring the stability of the connection between the cutter head portion 2 and the handle portion 1.

[0041] Preferably, by Figure 1 、 Figure 2 and Figure 4 As shown, in this embodiment, it also includes: a square connecting rod 13 and an adjusting bolt 6. The square connecting rod 13 is fixed to the end of the shank portion 1 away from the cutter head portion 2, and a plurality of positioning grooves 131 are provided on the outer wall of the square connecting rod 13 at equal intervals along its length direction. A No. 2 square connecting groove 31 for embedding the square connecting rod 13 is processed on the adapter rod 3, and a No. 2 threaded hole 32 is processed on the adapter rod 3. The adjusting bolt 6 is screwed into the No. 2 threaded hole 32 by threading, and the end of the adjusting bolt 6 is embedded in the positioning groove 131. After adopting the above scheme, when connecting the shank portion 1 and the adapter rod 3, the square connecting rod 13 is first embedded in the No. 2 square connecting groove 31, and then the adjusting bolt 6 is tightened so that one end of the adjusting bolt 6 is embedded in the positioning groove 131 for locking, thereby ensuring the stability of the connection between the shank portion 1 and the adapter rod 3.

[0042] It should be noted that since there are multiple positioning grooves 131, loosening the adjusting bolt 6 can adjust the embedded length of the square connecting rod 13, which is used to adjust the length of the entire carbide milling cutter to meet different processing requirements. After the adjustment is completed, tighten the adjusting bolt 6 so that one end of the adjusting bolt 6 is embedded in the positioning groove 131 at different positions for locking.

[0043] Preferably, by Figure 1 、 Figure 2 and Figure 4 As shown, in this embodiment, the outer wall of the square connecting rod 13 abuts against the inner wall of the second square connecting groove 31. After adopting the above scheme, after the square connecting rod 13 is embedded in the second square connecting groove 31, the handle part 1 and the adapter rod 3 are tightly connected, with high stability, avoiding relative shaking between the handle part 1 and the adapter rod 3 during operation, and improving safety.

[0044] Optionally, by Figure 1 、 Figure 2 and Figure 4 As shown, in this embodiment, four adjusting bolts 6 are evenly spaced along the circumferential direction, and the locking stability is high, ensuring the stability of the connection between the handle portion 1 and the adapter rod 3.

[0045] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the second connecting flange 41 and the clamping rod 4 are forged integral components with high structural strength.

[0046] Components not described in detail herein are prior art.

[0047] The working principle and use process of the utility model: When the carbide milling cutter of the utility model is used, the clamping rod 4 is fixedly connected to the output shaft of the machine tool, and the output shaft of the machine tool controls the operation of the cutter head 2;

[0048] In the present invention, the adapter rod 3 and the clamping rod 4 are fixedly connected by the cooperation of the No. 1 connecting flange 33, the No. 2 connecting flange 41, the locking bolt 7 and the locking nut 8. Under the premise of ensuring stable installation, the clamping rod 4 can be easily disassembled and replaced, and different clamping rods 4 can be easily replaced according to different usage scenarios, and the application range is wide.

[0049] In addition, for the carbide milling cutter of the present invention, loosening the adjusting bolt 6 can adjust the embedded length of the square connecting rod 13, which is used to adjust the length of the entire carbide milling cutter to meet different processing requirements. After the adjustment is completed, tighten the adjusting bolt 6 so that one end of the adjusting bolt 6 is embedded in the positioning groove 131 at different positions for locking.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A carbide milling cutter, comprising a shank portion (1) and a cutter head portion (2) detachably connected to one end of the shank portion (1), characterized in that: Also includes: A transfer rod (3), the transfer rod (3) being fixedly connected to one end of the knife handle (1) away from the knife head (2), and a first connection flange (33) being fixed to the end of the transfer rod (3) away from the knife handle (1); A clamping rod (4), the clamping rod (4) being used for fixed connection with a tool holder of a machine tool, and a second connecting flange (41) matching the first connecting flange (33) being fixed on the clamping rod (4); Locking bolts (7), wherein a plurality of the locking bolts (7) are distributed at equal intervals along the circumferential direction, and the locking bolts (7) penetrate the second connecting flange (41) and the first connecting flange (33); A locking nut (8) is mounted on the protruding end of the locking bolt (7) by screwing.

2. A cemented carbide milling cutter according to claim 1, characterized in that: Also includes: A square connecting block (21), the square connecting block (21) is fixed to the end of the cutter head (2), and a No. 1 threaded hole (211) is processed on the outer wall of the square connecting block (21), and a No. 1 square connecting groove (11) for the square connecting block (21) to be embedded is processed on one end of the handle (1); A countersunk screw (5) is processed with a countersunk hole (12) on the shank portion (1), and the countersunk screw (5) passes through the countersunk hole (12) and is screwed into the No. 1 threaded hole (211) by screwing.

3. A cemented carbide milling cutter according to claim 2, characterized in that: The outer wall of the square connecting block (21) abuts against the inner wall of the No. 1 square connecting groove (11).

4. The cemented carbide milling cutter according to claim 2, characterized in that: Four countersunk screws (5) are distributed at equal intervals along the circumferential direction.

5. The cemented carbide milling cutter according to claim 1, characterized in that: Also includes: A square connecting rod (13), the square connecting rod (13) is fixed to one end of the handle portion (1) away from the cutter head portion (2), and a plurality of positioning grooves (131) are formed on the outer wall of the square connecting rod (13) and are distributed at equal intervals along the length direction thereof, and a second square connecting groove (31) for the square connecting rod (13) to be embedded is processed on the transfer rod (3); An adjusting bolt (6) is processed with a No. 2 threaded hole (32) on the transfer rod (3), and the adjusting bolt (6) is screwed into the No. 2 threaded hole (32) by screwing, and the end of the adjusting bolt (6) is embedded in the positioning groove (131).

6. The cemented carbide milling cutter according to claim 5, characterized in that: The outer wall of the square connecting rod (13) abuts against the inner wall of the second square connecting groove (31).

7. The cemented carbide milling cutter according to claim 5, characterized in that: Four adjusting bolts (6) are distributed at equal intervals along the circumferential direction.

8. The cemented carbide milling cutter according to claim 1, characterized in that: The second connecting flange (41) and the clamping rod (4) are forged integral components.

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