Special cutter

Abstract

The utility model relates to the technical field of cutter machining, in particular to a special cutter which comprises a milling cutter handle, a milling cutter head is fixedly connected to the surface of the milling cutter handle, a through groove and a second inserting hole are formed in the milling cutter handle, a guide shaft is arranged on the surface of the milling cutter head, a connecting rod is fixedly connected to the surface of the guide shaft, and a second inserting hole is formed in the connecting rod. And a first inserting hole is formed in the connecting rod. The guide shaft is arranged at the front end of the milling cutter head, so that a guide device can be additionally arranged at the front end of the cutter when the milling cutter is used for machining a hole in an uneven blank surface, the guide shaft is inserted into a prefabricated machining hole before the milling cutter is used for machining the hole, and the guide shaft can limit drifting of the cutter, so that the roundness of the machined hole is ensured; and meanwhile, through connection of the bolt and the nut, the purpose of disassembling the guide shaft can be achieved, the disassembled milling cutter is machined again, it can be guaranteed that the surface of a machined hole is smooth, and a prefabricated machined hole disappears.

Description

Technical Field

[0001] The utility model relates to the technical field of tool processing, in particular to a special tool. Background Art

[0002] This special tool is a milling cutter, which is a tool used for milling processing. It is a rotating tool with one or more teeth. During the working process, each tooth of the milling cutter intermittently cuts off the excess of the workpiece in turn. The milling cutter is mainly used to process planes, steps, grooves, forming surfaces and cut off workpieces on milling machines.

[0003] During the process of the milling cutter processing the blank, the milling cutter needs to be installed on the corresponding fixture to drive the milling cutter to rotate. However, when the existing milling cutter processes holes on the uneven surface of the blank, the roundness of the processed holes cannot be guaranteed due to the unevenness of the blank, which in turn leads to inaccurate precision of the holes required in the blank, affecting the production and processing of the blank. Utility Model Content

[0004] The purpose of the utility model is to provide a special tool to solve the problem that when the milling cutter proposed in the above background technology processes holes on the uneven surface of a blank, the roundness of the processed holes cannot be guaranteed due to the unevenness of the blank, which in turn leads to inaccurate precision of the holes required in the blank, affecting the production and processing of the blank.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a special tool, comprising a milling cutter shank, a milling cutter head is fixedly connected to the surface of the milling cutter shank, a through groove and a second plug-in hole are provided inside the milling cutter shank, a guide shaft is provided on the surface of the milling cutter head, a connecting rod is fixedly connected to the surface of the guide shaft, a first plug-in hole is provided inside the connecting rod, a bolt is installed on the surface of the second plug-in hole, a nut is installed on the surface of the bolt, a limiting block is fixedly connected to the surface of the through groove, and a limiting groove is provided on the surface of the connecting rod.

[0006] Preferably, two groups of through grooves are provided, one group of through grooves is opened inside the milling cutter handle, and the other group of through grooves is opened inside the milling cutter head, and the guide shaft is abutted and connected to the surface of the milling cutter head.

[0007] Preferably, one end of the connecting rod is fixedly connected to the surface of the guide shaft, and the other end of the connecting rod is plug-connected to the surface of the through groove.

[0008] Preferably, two groups of the first and second plug-in holes are provided, each group of the second plug-in holes has two second plug-in holes, the two groups of the second plug-in holes are opened on both sides of the milling cutter handle, and the diameter of the first and second plug-in holes is the same.

[0009] Preferably, two groups of bolts are provided, one end of the bolt is abutted and connected to the surface of the milling cutter shank, the other end of the bolt is threadedly connected to the surface of the nut, and the bolt passes through the first insertion hole and the second insertion hole and is connected to the surface of the milling cutter shank and the connecting rod.

[0010] Preferably, the nuts are provided in two groups, the size of the nuts is larger than the size of the second insertion hole, and the nuts are abutted and connected to the surface of the milling cutter handle.

[0011] Preferably, two groups of the limit blocks and limit grooves are provided, the two groups of the limit blocks are arranged inside the milling cutter head, the two groups of the limit blocks are fixedly connected on both sides of the through grooves, the two groups of the limit grooves are opened on both sides of the connecting rod, and the limit blocks are snap-connected to the surface of the limit grooves.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting a guide shaft at the front end of the milling cutter head, a guide device can be added to the front end of the tool when the milling cutter processes holes on uneven blank surfaces. The guide shaft is inserted into the prefabricated processing hole before the milling cutter processes the hole. The guide shaft can limit the drift of the tool, thereby ensuring the roundness of the processed hole. At the same time, the guide shaft can be disassembled through the connection of bolts and nuts. The disassembled milling cutter can be processed again to ensure that the surface of the processed hole is smooth, resulting in the disappearance of the prefabricated processing hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a left-side perspective schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a right-side perspective schematic diagram of the structure of the utility model;

[0016] Figure 3 It is a schematic diagram of a frontal three-dimensional cross-sectional view of the structure of the utility model;

[0017] Figure 4 It is a partial three-dimensional cross-sectional schematic diagram of the structure of the milling cutter head of the utility model;

[0018] Figure 5 It is a schematic diagram of a partial three-dimensional cross-sectional view of the structure of the milling cutter handle of the utility model.

[0019] In the figure: 1. milling cutter handle; 2. milling cutter head; 3. through groove; 4. guide shaft; 5. connecting rod; 6. first plug-in hole; 7. second plug-in hole; 8. bolt; 9. nut; 10. limit block; 11. limit groove. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-5 , an embodiment provided by the utility model:

[0022] A special tool comprises a milling cutter handle 1, a milling cutter head 2 is fixedly connected to the surface of the milling cutter handle 1, a through groove 3 and a second plug-in hole 7 are provided inside the milling cutter handle 1, a guide shaft 4 is provided on the surface of the milling cutter head 2, a connecting rod 5 is fixedly connected to the surface of the guide shaft 4, a first plug-in hole 6 is provided inside the connecting rod 5, a bolt 8 is installed on the surface of the second plug-in hole 7, a nut 9 is installed on the surface of the bolt 8, a limiting block 10 is fixedly connected to the surface of the through groove 3, and a limiting groove 11 is provided on the surface of the connecting rod 5. When using the special milling cutter, the milling cutter needs to be installed on a fixture, and the milling cutter is rotated by the drive of a motor to process the blank.

[0023] Furthermore, two groups of through grooves 3 are provided, one group of through grooves 3 is opened inside the milling cutter shank 1, and the other group of through grooves 3 is opened inside the milling head 2. The guide shaft 4 is abutted and connected to the surface of the milling head 2. Through grooves 3 are opened inside the milling cutter shank 1 and the milling head 2 to achieve the installation of the connecting rod 5 on the surface of the through groove 3, and the disassembly and assembly effect of the guide shaft 4 can be achieved at the same time.

[0024] Furthermore, one end of the connecting rod 5 is fixedly connected to the surface of the guide shaft 4, and the other end of the connecting rod 5 is plugged into the surface of the through groove 3. Under the action of the connecting rod 5, the connection effect of the guide shaft 4 is achieved, so that the guide shaft 4 is installed on the surface of the milling cutter head 2, and at the same time plays a guiding role for the milling cutter, so that when the milling cutter processes uneven blanks, the accuracy and roundness of the circular hole can be guaranteed.

[0025] Furthermore, two groups of first plug-in holes 6 and second plug-in holes 7 are provided, and the number of second plug-in holes 7 in each group is two. The two groups of second plug-in holes 7 are opened on both sides of the milling cutter shank 1. The diameter of the first plug-in hole 6 and the diameter of the second plug-in hole 7 are the same. Under the action of the first plug-in hole 6 and the second plug-in hole 7, the two groups of bolts 8 can be plugged and connected on the surfaces of the two.

[0026] Furthermore, two groups of bolts 8 are provided, one end of the bolt 8 is abutted against the surface of the milling cutter shank 1, and the other end of the bolt 8 is connected to the surface of the nut 9 through a thread. The bolt 8 passes through the first plug-in hole 6 and the second plug-in hole 7 and is connected to the surfaces of the milling cutter shank 1 and the connecting rod 5. Through the connection between the bolt 8 and the first plug-in hole 6 and the second plug-in hole 7, the bolt 8 limits and fixes the connection between the milling cutter shank 1 and the connecting rod 5 to avoid the connecting rod 5 sliding on the surface of the through groove 3 during rotation.

[0027] Furthermore, two groups of nuts 9 are provided, and the size of the nuts 9 is larger than the size of the second plug-in hole 7. The nuts 9 are connected to the surface of the milling cutter shank 1, and the bolts 8 and the nuts 9 are connected by the action of the threads, and the bolts 8 are limited by the nuts 9 to fix the bolts 8 installed on the first plug-in hole 6 and the second plug-in hole 7, thereby completing the connection effect between the connecting rod 5 and the milling cutter shank 1.

[0028] Furthermore, two groups of limit blocks 10 and limit grooves 11 are provided, and the two groups of limit blocks 10 are arranged inside the milling head 2, and the two groups of limit blocks 10 are fixedly connected on both sides of the through groove 3, and the two groups of limit grooves 11 are opened on both sides of the connecting rod 5. The limit blocks 10 are snap-connected to the surface of the limit grooves 11. Through the connection between the limit blocks 10 and the limit grooves 11, during the installation of the connecting rod 5, the limit grooves 11 on both sides can be directly inserted into the surfaces of the two groups of limit blocks 10 connected on the milling head 2, so as to avoid the inability to align the hole positions of the first plug-in hole 6 and the second plug-in hole 7 when the connecting rod 5 is installed in the through groove 3, thereby avoiding the difficulty of installing the bolt 8 on the first plug-in hole 6 and the second plug-in hole 7.

[0029] Working principle: When opening a hole on the surface of an uneven blank, a prefabricated hole smaller than the processing hole can be opened at the position of the desired processing hole. At this time, when processing the processing hole, first insert the connecting rod 5 and the limiting groove 11 into the surfaces of the through groove 3 and the limiting groove 11 respectively, and the guide shaft 4 abuts against the milling head 2 so that the hole positions of the first plug-in hole 6 and the second plug-in hole 7 are aligned, and the bolt 8 is inserted into the surfaces of the first plug-in hole 6 and the second plug-in hole 7. Through the action of the thread, the nut 9 is installed on the bolt 8 and abuts against the milling cutter handle 1, and the guide shaft 4 is inserted into the prefabricated hole. At this time, start the power supply to make the milling cutter rotate, and the milling cutter head 2 processes the uneven blank surface. After a circular hole is formed, remove the milling cutter and remove the nut 9 from the surface of the bolt 8, and use the guide shaft 4 to pull the connecting rod 5 out of the surface of the through groove 3, and install the milling cutter again to process the circular hole, and finally form the desired processing hole.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A special tool, comprising a milling cutter handle (1), characterized in that: The surface of the milling cutter handle (1) is fixedly connected to a milling cutter head (2), a through groove (3) and a second plug-in hole (7) are provided inside the milling cutter handle (1), a guide shaft (4) is provided on the surface of the milling cutter head (2), a connecting rod (5) is fixedly connected to the surface of the guide shaft (4), a first plug-in hole (6) is provided inside the connecting rod (5), a bolt (8) is installed on the surface of the second plug-in hole (7), a nut (9) is installed on the surface of the bolt (8), a limiting block (10) is fixedly connected to the surface of the through groove (3), and a limiting groove (11) is provided on the surface of the connecting rod (5).

2. A special tool according to claim 1, characterized in that: The through grooves (3) are provided in two groups, one group of the through grooves (3) is opened inside the milling cutter handle (1), and the other group of the through grooves (3) is opened inside the milling cutter head (2), and the guide shaft (4) is abutted and connected to the surface of the milling cutter head (2).

3. A special tool according to claim 1, characterized in that: One end of the connecting rod (5) is fixedly connected to the surface of the guide shaft (4), and the other end of the connecting rod (5) is plug-connected to the surface of the through groove (3).

4. A special tool according to claim 1, characterized in that: The first plug-in holes (6) and the second plug-in holes (7) are provided in two groups, each group of the second plug-in holes (7) has two second plug-in holes (7), the two groups of the second plug-in holes (7) are arranged on both sides of the milling cutter handle (1), and the diameter of the first plug-in hole (6) is the same as the diameter of the second plug-in hole (7).

5. A special tool according to claim 1, characterized in that: The bolts (8) are provided in two groups, one end of the bolts (8) is abutted against the surface of the milling cutter handle (1), and the other end of the bolts (8) is connected to the surface of the nut (9) through a thread, and the bolts (8) are connected to the surfaces of the milling cutter handle (1) and the connecting rod (5) through the first insertion hole (6) and the second insertion hole (7).

6. A special tool according to claim 5, characterized in that: The nuts (9) are provided in two groups. The size of the nuts (9) is larger than the size of the second insertion hole (7). The nuts (9) are abutted and connected to the surface of the milling cutter handle (1).

7. A special tool according to claim 1, characterized in that: The limit blocks (10) and the limit grooves (11) are provided in two groups. The two groups of limit blocks (10) are provided inside the milling cutter head (2). The two groups of limit blocks (10) are fixedly connected to the two sides of the through groove (3). The two groups of limit grooves (11) are provided on the two sides of the connecting rod (5). The limit blocks (10) are snap-fitted and connected to the surface of the limit grooves (11).

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