Milling cutter with high assembly precision

Abstract

The utility model discloses a milling cutter with high assembly precision, which comprises a cutter head, the inner wall of the cutter head is in threaded connection with a connecting rod, the top end of the connecting rod is fixedly connected with a cutter handle, the outer surface of the cutter head is provided with a cutter groove, and the inner wall of the cutter groove is fixedly connected with a blade. The external thread at the bottom end of the connecting rod is screwed into the internal thread of the cutter head, the bolt is inserted into the overlapped through holes in the cutter head and the connecting rod after screwing, the fixing relation between the cutter head and the connecting rod is enhanced, then a cutter handle is taken out, and the inserting column and the protruding block at the bottom end of the cutter handle are inserted into the arc sleeve at the top end of the connecting rod. The arc sleeve and the first mounting hole in the inserting column are overlapped, then the inner wall of the arc sleeve is sleeved with the mounting sleeve, the inner column in the mounting sleeve is inserted into the overlapped first mounting hole, a bolt is inserted into the second mounting hole to reinforce the fixing relation between the mounting sleeve and the cutter handle, finally, the blade is installed on the cutter head, and assembling of the milling cutter is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of milling machining, in particular to a milling cutter with high assembly precision. Background Technique

[0002] A milling cutter is a rotary cutter with one or more cutting teeth used for milling machining. During operation, each cutting tooth intermittently cuts off the surplus of the workpiece in turn. Milling cutters are mainly used for machining planes, steps, grooves, formed surfaces, and cutting workpieces on milling machines, etc.

[0003] After retrieval, in the Chinese utility model patent publication No. CN212945650U, an assembled high-precision end milling cutter is disclosed, which includes a milling cutter body and a three-jaw chuck. The installation method of the milling cutter is more diversified, facilitating users to selectively use according to needs. For example, it can achieve the use effect of using one of the jaws of the three-jaw chuck for auxiliary positioning installation. However, the above-mentioned cutter is an integral machining cutter. Once the cutting edge is damaged, it will affect the machining quality. Therefore, once the cutting edge breaks down, regardless of the degree of damage, the cutter generally needs to be replaced, and the tool holder and other intact parts need to be discarded together, resulting in great waste and pollution. Therefore, a milling cutter is needed in which the blade, cutter head, and tool holder are separated and assembled for use. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a milling cutter with high assembly precision, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A milling cutter with high assembly precision includes a cutter head. The inner wall of the cutter head is threadedly connected with a connecting rod, the top end of the connecting rod is fixedly connected with a tool holder, a cutter groove is formed on the outer surface of the cutter head, and a blade is fixedly connected to the inner wall of the cutter groove.

[0007] To achieve the effect of fixing the blade, as a milling cutter with high assembly precision of the utility model, fixing holes are formed on the inner wall of the cutter groove, and fastening nails are fixedly connected to the inner walls of the fixing holes.

[0008] To achieve the effect of connecting the cutter head and the connecting rod, as a milling cutter with high assembly precision of the utility model, internal threads are provided on the inner wall of the cutter head, and external threads are provided at the bottom end of the connecting rod.

[0009] To achieve the effect of inserting a bolt, as a milling cutter with high assembly precision of the utility model, a middle groove is formed on the outer surface of the cutter head, and through holes are formed on the inner wall of the middle groove and the bottom of the outer surface of the connecting rod.

[0010] In order to enhance the fixing effect between the cutter head and the connecting rod, as a milling cutter with high assembly precision of the present utility model, a plug pin is provided on the inner wall of the through hole, and clamping heads are fixedly connected to both ends of the plug pin.

[0011] In order to achieve the effect of facilitating the insertion of the insertion post, as a milling cutter with high assembly precision of the present utility model, an arc-shaped sleeve is fixedly connected to the upper surface of the connecting rod, an insertion post is fixedly connected to the lower surface of the tool handle, and first mounting holes are provided on the outer surfaces of the arc-shaped sleeve and the insertion post.

[0012] In order to achieve the effect of cooperating with the bolt for fixing, as a milling cutter with high assembly precision of the present utility model, a convex block is fixedly connected to the outer surface of the insertion post, and a second mounting hole is provided on the outer surface of the convex block.

[0013] In order to achieve the effect of facilitating the clamping of the arc-shaped sleeve and the insertion post, as a milling cutter with high assembly precision of the present utility model, a mounting sleeve is fixedly connected to the outer surface of the arc-shaped sleeve, an inner post is fixedly connected to the inner wall of the mounting sleeve, and a bolt is connected to the inner wall of the second mounting hole.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. For this milling cutter with high assembly precision, through the settings of the cutter head, connecting rod, tool handle, arc-shaped sleeve, first mounting hole, insertion post, convex block, second mounting hole, mounting sleeve, inner post and bolt, take out a cutter head and a connecting rod, and screw the external thread at the bottom end of the connecting rod into the internal thread of the cutter head. After tightening, insert a plug pin into the overlapping through holes of the cutter head and the connecting rod to strengthen the fixing relationship between the cutter head and the connecting rod. Then take out a tool handle, insert the insertion post and the convex block at the bottom end of the tool handle into the arc-shaped sleeve at the top end of the connecting rod, so that the first mounting holes on the arc-shaped sleeve and the insertion post overlap. Then use the mounting sleeve to cover the inner wall of the arc-shaped sleeve, and insert the inner post in the mounting sleeve into the overlapping first mounting holes, and insert a bolt into the second mounting hole to strengthen the fixing relationship between the mounting sleeve and the tool handle. Finally, install the blade on the cutter head to complete the assembly of the milling cutter. Thus, the milling cutter can be divided into multiple parts. After a certain part of the milling cutter is damaged, only the corresponding part needs to be replaced, and there is no need to replace the entire milling cutter, avoiding waste and pollution.

[0016] 2. For this milling cutter with high assembly precision, through the settings of the cutter groove, blade, fixing hole and fastening nail, there are six cutter grooves on the cutter head, and there is a fixing hole in the cutter groove. When fixing the blade, select a blade of appropriate size, place the blade on the inner wall of the cutter groove so that the hole on the blade corresponds to the fixing hole, and then insert the fastening nail to fix the blade. Thus, blades with different blade sizes can be installed in the cutter head. Description of the Drawings

[0017] Figure 1Schematic diagram of the structure of a milling cutter with high assembly accuracy in Embodiment 1 of the present utility model;

[0018] Figure 2 Axonometric structure diagram of the bottom view of a milling cutter with high assembly accuracy in Embodiment 1 of the present utility model;

[0019] Figure 3 Axonometric structure diagram of the rear view of a milling cutter with high assembly accuracy in Embodiment 1 of the present utility model;

[0020] Figure 4 Schematic cross-sectional view of the right view of a milling cutter with high assembly accuracy in Embodiment 1 of the present utility model;

[0021] Figure 5 Axonometric structure diagram of the exploded view of a milling cutter with high assembly accuracy in Embodiment 1 of the present utility model;

[0022] Figure 6 Axonometric structure diagram of the cutter head of a milling cutter with high assembly accuracy in Embodiment 1 of the present utility model;

[0023] Figure 7 Exploded structure diagram of the middle mounting sleeve of a milling cutter with high assembly accuracy in Embodiment 1 of the present utility model;

[0024] Figure 8 Axonometric structure diagram of the tool shank of a milling cutter with high assembly accuracy in Embodiment 1 of the present utility model.

[0025] In the figure: 1, cutter head; 2, connecting rod; 3, tool shank; 4, cutter groove; 5, blade; 6, fixing hole; 7, fastening nail; 8, internal thread; 9, external thread; 10, middle groove; 11, through hole; 12, plug pin; 13, chuck; 14, arc sleeve; 15, first mounting hole; 16, inserting column; 17, convex block; 18, second mounting hole; 19, mounting sleeve; 20, inner column; 21, bolt. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1

[0028] Such as Figure 1-8As shown in the figure, a milling cutter with high assembly precision includes a cutter head 1. A connecting rod 2 is threadedly connected to the inner wall of the cutter head 1. The top end of the connecting rod 2 is fixedly connected to a tool handle 3. A cutter groove 4 is formed on the outer surface of the cutter head 1, and a cutter blade 5 is fixedly connected to the inner wall of the cutter groove 4.

[0029] During specific use, through the settings of the cutter head 1, connecting rod 2, tool handle 3, arc sleeve 14, first mounting hole 15, plug post 16, convex block 17, second mounting hole 18, mounting sleeve 19, inner post 20 and bolt 21, the external thread 9 at the bottom end of the connecting rod 2 is connected to the internal thread 8 of the cutter head 1. There are through holes 11 in the middle groove 10 of the cutter head 1 and at the bottom end of the connecting rod 2, and they are used in cooperation with the insertion of a split pin 12. The top end of the connecting rod 2 is fixedly connected with an arc sleeve 14. The bottom end of the tool handle 3 is fixedly connected with a plug post 16 and a convex block 17. The plug post 16 and convex block 17 at the bottom of the tool handle 3 are inserted into the arc sleeve 14 at the top end of the connecting rod 2. There are three inner posts 20 in the mounting sleeve 19 for cooperation with the first mounting hole 15. When assembling the milling cutter, first take out a cutter head 1 and a connecting rod 2, and screw the external thread 9 at the bottom end of the connecting rod 2 into the internal thread 8 of the cutter head 1. After tightening, insert a split pin 12 into the coincident through holes 11 on the cutter head 1 and the connecting rod 2 to strengthen the fixing relationship between the cutter head 1 and the connecting rod 2. Then take out a tool handle 3, insert the plug post 16 and convex block 17 at the bottom end of the tool handle 3 into the arc sleeve 14 at the top end of the connecting rod 2, so that the first mounting holes 15 on the arc sleeve 14 and the plug post 16 coincide with each other. Then use the mounting sleeve 19 to cover the inner wall of the arc sleeve 14, and insert the inner posts 20 in the mounting sleeve 19 into the coincident first mounting holes 15, and insert a bolt 21 into the second mounting hole 18 to strengthen the fixing relationship between the mounting sleeve 19 and the tool handle 3. Finally, install the cutter blade 5 on the cutter head 1 to complete the assembly of the milling cutter. Thus, the milling cutter can be divided into multiple parts. After a certain part of the milling cutter is damaged, only the corresponding part needs to be replaced, and there is no need to replace the entire milling cutter, avoiding waste and pollution.

[0030] In this embodiment, a fixing hole 6 is formed on the inner wall of the cutter groove 4, and a fastening nail 7 is fixedly connected to the inner wall of the fixing hole 6.

[0031] During specific use, the cutter blade 5 is fixed through the setting of the fastening nail 7.

[0032] In this embodiment, an internal thread 8 is provided on the inner wall of the cutter head 1, and an external thread 9 is provided at the bottom end of the connecting rod 2.

[0033] During specific use, the cutter head 1 and the connecting rod 2 are connected through the settings of the internal thread 8 and the external thread 9.

[0034] In this embodiment, a middle groove 10 is formed on the outer surface of the cutter head 1, and through holes 11 are formed on the inner wall of the middle groove 10 and at the bottom of the outer surface of the connecting rod 2.

[0035] During specific use, through the setting of the through hole 11, the bolt 12 is inserted.

[0036] In this embodiment, the inner wall of the through hole 11 is provided with a bolt 12, and clamping heads 13 are fixedly connected to both ends of the bolt 12.

[0037] During specific use, through the setting of the bolt 12, the fixation between the cutter head 1 and the connecting rod 2 is strengthened.

[0038] In this embodiment, an arc-shaped sleeve 14 is fixedly connected to the upper surface of the connecting rod 2, a plug post 16 is fixedly connected to the lower surface of the tool handle 3, and first mounting holes 15 are formed in the outer surfaces of the arc-shaped sleeve 14 and the plug post 16.

[0039] During specific use, through the setting of the first mounting hole 15, it is convenient for the plug post 16 to be inserted.

[0040] In this embodiment, a convex block 17 is fixedly connected to the outer surface of the plug post 16, and a second mounting hole 18 is formed in the outer surface of the convex block 17.

[0041] During specific use, through the setting of the second mounting hole 18, it is fixed in cooperation with the bolt 21.

[0042] In this embodiment, a mounting sleeve 19 is fixedly connected to the outer surface of the arc-shaped sleeve 14, an inner post 20 is fixedly connected to the inner wall of the mounting sleeve 19, and a bolt 21 is connected to the inner wall of the second mounting hole 18.

[0043] During specific use, through the setting of the bolt 21, it is convenient to clamp the arc-shaped sleeve 14 and the plug post 16.

[0044] Working principle: When assembling the milling cutter, first take out a cutter head 1 and a connecting rod 2, and screw the external thread 9 at the bottom end of the connecting rod 2 into the internal thread 8 of the cutter head 1. After tightening, insert the bolt 12 into the overlapping through holes 11 in the cutter head 1 and the connecting rod 2 to strengthen the fixed relationship between the cutter head 1 and the connecting rod 2. Then take out a tool handle 3, insert the plug post 16 and the convex block 17 at the bottom end of the tool handle 3 into the arc-shaped sleeve 14 at the top end of the connecting rod 2, so that the first mounting holes 15 on the arc-shaped sleeve 14 and the plug post 16 overlap with each other. Then use the mounting sleeve 19 to cover the inner wall of the arc-shaped sleeve 14, and insert the inner post 20 in the mounting sleeve 19 into the overlapping first mounting holes 15, and insert the bolt 21 into the second mounting hole 18 to strengthen the fixed relationship between the mounting sleeve 19 and the tool handle 3. Finally, install the blade 5 on the cutter head 1 to complete the assembly of the milling cutter.

[0045] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A milling cutter with high assembly accuracy, comprising a cutter disc (1), characterized in that: The inner wall of the cutter disc (1) is threadedly connected to a connecting rod (2), the top end of the connecting rod (2) is fixedly connected to a cutter handle (3), the outer surface of the cutter disc (1) is provided with a cutter groove (4), the inner wall of the cutter groove (4) is fixedly connected to a blade (5), the inner wall of the cutter disc (1) is provided with an internal thread (8), the bottom end of the connecting rod (2) is provided with an external thread (9), the outer surface of the cutter disc (1) is provided with a middle groove (10), the inner wall of the middle groove (10) and the bottom of the outer surface of the connecting rod (2) are both provided with a through hole (11), the inner wall of the through hole (11) is provided with a latch (12), both ends of the latch (12) are provided with a through hole (11), and the inner wall of the through hole (11) is provided with a latch (12). The connecting rod (2) and the shank (3) are fixedly connected with a clamp (13), the upper surface of the connecting rod (2) is fixedly connected with an arc sleeve (14), the lower surface of the shank (3) is fixedly connected with an insertion column (16), the outer surfaces of the arc sleeve (14) and the insertion column (16) are both provided with a first mounting hole (15), the outer surface of the insertion column (16) is fixedly connected with a protrusion (17), the outer surface of the protrusion (17) is provided with a second mounting hole (18), the outer surface of the arc sleeve (14) is fixedly connected with a mounting sleeve (19), the inner wall of the mounting sleeve (19) is fixedly connected with an inner column (20), and the inner wall of the second mounting hole (18) is connected with a bolt (21).

2. A milling cutter with high assembly precision according to claim 1, characterized in that: The inner wall of the knife groove (4) is provided with a fixing hole (6), and the inner wall of the fixing hole (6) is fixedly connected with a fastening nail (7).

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