Alloy tool bit convenient to weld

Abstract

The utility model discloses an alloy tool bit convenient to weld, which relates to the technical field of milling cutters and comprises a cutter bar and a tool bit fixing device. A mounting round hole is formed in the bottom of the cutter bar, and a cylindrical mounting block is slidably connected into the mounting round hole; the tool bit fixing device comprises four positioning clamping blocks, a connecting shaft, two hexagonal prism sliding blocks and two bolts, four positioning clamping grooves are circularly formed in the surface of the cylindrical mounting block at equal intervals, the connecting shaft is fixedly connected to the top of the cylindrical mounting block, the connecting shaft is slidably connected to the interior of the mounting round hole, two hexagonal prism clamping holes are formed in the surface of the connecting shaft, and the hexagonal prism sliding blocks are arranged in the hexagonal prism clamping holes. The two hexagonal prism sliding blocks can be driven to move into the two hexagonal prism clamping holes to complete fixing of the tool bit by rotating the bolt through the wrench again by the worker, in this way, the tool bar and the tool bit can be detached, when the tool bit is damaged, the worker can conveniently detach the tool bit independently, and the tool bit is convenient to use. And therefore, the convenience of independent replacement of the tool bit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, and particularly relates to an alloy cutter head which is convenient for welding. Background Art

[0002] A milling cutter is a tool used for milling processing. It is a rotary tool with one or more cutting teeth. Milling cutters can be classified into cylindrical milling cutters, face milling cutters, end milling cutters, four-edge flat-tooth milling cutters, etc. When in operation, each cutting tooth of the milling cutter intermittently cuts off the surplus of the workpiece in turn. Milling cutters are mainly used for processing planes, steps, grooves, formed surfaces, cutting workpieces, etc. on a milling machine.

[0003] The currently disclosed patent: CN211966068U discloses a milling cutter. The milling cutter includes a tool shank; one end of the tool shank is provided with a first external thread, and one end of the cutter head is provided with a first internal thread. The first external thread and the first internal thread are mutually matched and screwed to realize the combination of the tool shank and the cutter head. An adhesive is further arranged at the thread connection to realize the fastening of the tool shank and the cutter head. The connection firmness between the tool shank and the cutter head is further enhanced through the adhesive.

[0004] Based on the above search, the following problems exist in the use of the above patent: When installing the milling cutter, the fastening of the tool shank and the cutter head is realized through the adhesive at the thread connection. However, after the adhesive bonds the tool shank and the cutter head, it cannot be disassembled. When the cutter head is damaged, it is inconvenient for the staff to disassemble the cutter head alone. There is a problem of difficult disassembly through the bonding of the adhesive, which further affects the convenience of separately replacing the cutter head. Content of the Utility Model

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide an alloy cutter head which is convenient for welding, which can solve the problem that after the adhesive bonds the tool shank and the cutter head, it cannot be disassembled. When the cutter head is damaged, it is inconvenient for the staff to disassemble the cutter head alone. There is a problem of difficult disassembly through the bonding of the adhesive, which further affects the convenience of separately replacing the cutter head.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An alloy cutter head convenient for welding, comprising a tool shank and a cutter head fixing device; a mounting round hole is opened at the bottom of the tool shank, and a cylindrical mounting block is slidably connected inside the mounting round hole; the cutter head fixing device includes four positioning blocks, a connecting shaft, two hexagonal prism sliders and two bolts. Four positioning slots are equidistantly arranged in a circular shape on the surface of the cylindrical mounting block. The connecting shaft is fixedly connected to the top of the cylindrical mounting block, and the connecting shaft is slidably connected inside the mounting round hole. Two hexagonal card holes are opened on the surface of the connecting shaft. Two hexagonal sliding slots are opened inside the tool shank, and the two hexagonal prism sliders are respectively slidably connected inside the two hexagonal sliding slots, and the two hexagonal prism sliders are respectively slidably connected inside the two hexagonal card holes.

[0007] Preferably, a cutter head is fixedly connected to the bottom of the cylindrical mounting block, and four welding slots are equidistantly arranged in a circular shape on the surface of the cutter head.

[0008] Preferably, triangular blades are welded inside the four welding slots.

[0009] Preferably, the four positioning blocks are fixedly connected to the inner wall of the mounting round hole at equal intervals in a circular shape, and the four positioning blocks are respectively slidably clamped inside the four positioning slots.

[0010] Preferably, the two bolts are rotatably installed inside the tool shank, and the two bolts are respectively threadedly installed inside the two hexagonal prism sliders.

[0011] Preferably, a sealing gasket is slidably sleeved on the surface of the cylindrical mounting block, and the top of the sealing gasket is in contact with the bottom of the tool shank.

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

[0013] 1. For this alloy cutter head convenient for welding, the staff can drive the two hexagonal prism sliders to move into the two hexagonal card holes to complete the fixation of the cutter head by rotating the bolts with a wrench again. In this way, the tool shank and the cutter head can be disassembled. When the cutter head is damaged, the staff can conveniently disassemble the cutter head alone, avoiding the problem of difficult disassembly due to the bonding of adhesives, and thus improving the convenience of replacing the cutter head alone. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further illustrates the present utility model in conjunction with the drawings and embodiments:

[0015] Figure 1 It is a schematic diagram of the overall structure of an alloy cutter head convenient for welding of the present utility model;

[0016] Figure 2 It is a schematic cross-sectional structure diagram of the tool shank of the present utility model;

[0017] Figure 3 Schematic diagram of the surface structure of the cylindrical mounting block of the present utility model;

[0018] Figure 4 Schematic diagram of the bottom structure of the tool bar of the present utility model.

[0019] Reference numerals: 1, tool bar; 2, mounting round hole; 3, cylindrical mounting block; 4, tool tip; 5, welding slot; 6, triangular blade; 7, positioning slot; 8, positioning block; 9, connecting shaft; 10, hexagonal card hole; 11, hexagonal chute; 12, hexagonal prism slider; 13, bolt; 14, gasket. Detailed implementation manners

[0020] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be understood that for orientation descriptions, such as up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0022] In the description of the present utility model, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0023] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0024] Please refer to Figures 1-4 , the present utility model provides a technical solution: an alloy tool tip that is convenient for welding, including a tool bar 1 and a tool tip fixing device. An installation round hole 2 is opened at the bottom of the tool bar 1. A cylindrical mounting block 3 is slidably connected inside the installation round hole 2. A tool tip 4 is fixedly connected to the bottom of the cylindrical mounting block 3. Four welding slots 5 are equidistantly arranged in a circular shape on the surface of the tool tip 4. Triangular blades 6 are welded inside the four welding slots 5.

[0025] The inside of the welding slot 5 is provided with a limiting step, and the staff can weld the triangular blade 6 close to the surface of the limiting step, which is convenient for the staff to weld the triangular blade 6 inside the welding slot 5, improving the convenience of welding the triangular blade 6.

[0026] The tool bit fixing device includes four positioning blocks 8, a connecting shaft 9, two hexagonal prism sliders 12 and two bolts 13. The surface of the cylindrical mounting block 3 is provided with four positioning slots 7 at equal intervals in a circular shape. The four positioning blocks 8 are fixedly connected to the inner wall of the mounting round hole 2 at equal intervals in a circular shape. The four positioning blocks 8 are respectively slidably clamped inside the four positioning slots 7. The connecting shaft 9 is fixedly connected to the top of the cylindrical mounting block 3. The connecting shaft 9 is slidably connected inside the mounting round hole 2. Two hexagonal card holes 10 are opened on the surface of the connecting shaft 9. Two hexagonal sliding grooves 11 are opened inside the tool bar 1. The two hexagonal prism sliders 12 are respectively slidably connected inside the two hexagonal sliding grooves 11. The two hexagonal prism sliders 12 are respectively slidably connected inside the two hexagonal card holes 10. The two bolts 13 are both rotatably mounted inside the tool bar 1. The two bolts 13 are respectively threadedly mounted inside the two hexagonal prism sliders 12.

[0027] When the tool bit 4 is damaged and needs to be replaced, the staff can rotate the bolt 13 through a wrench. When the bolt 13 rotates, it can drive the hexagonal prism slider 12 to slide through the threaded connection with the hexagonal prism slider 12. The hexagonal prism slider 12 slides and moves out of the inside of the hexagonal card hole 10. The staff removes the two hexagonal prism sliders 12 from the inside of the two hexagonal card holes 10 in the same way to release the fixing effect on the connecting shaft 9. The staff slides the tool bit 4 downward and drives the cylindrical mounting block 3 and the connecting shaft 9 to slide downward and move out of the inside of the mounting round hole 2 to complete the disassembly. Then, the staff takes out a new tool bit 4 and inserts the cylindrical mounting block 3 and the connecting shaft 9 into the inside of the mounting round hole 2, and makes the four positioning blocks 8 slide and be clamped inside the four positioning slots 7. The stability of the connection between the cylindrical mounting block 3 and the tool bar 1 is improved through the connection between the four positioning slots 7 and the four positioning blocks 8, thereby ensuring the stability of the fixed installation of the tool bit 4. The staff rotates the bolt 13 through the wrench again to drive the two hexagonal prism sliders 12 to move into the inside of the two hexagonal card holes 10 to complete the fixing of the tool bit 4. In this way, the tool bar 1 and the tool bit 4 can be disassembled. When the tool bit 4 is damaged, it is convenient for the staff to disassemble the tool bit 4 alone, avoiding the problem of difficult disassembly due to the bonding of the adhesive, and thus improving the convenience of replacing the tool bit 4 alone.

[0028] A sealing gasket 14 is slidably sleeved on the surface of the cylindrical mounting block 3, and the top of the sealing gasket 14 is in contact with the bottom of the tool bar 1.

[0029] After the cylindrical mounting block 3 is slidably mounted into the inner part of the mounting round hole 2, the cylindrical mounting block 3 slides and drives the gasket 14 to slide and press against the bottom of the tool shank 1. The extrusion between the gasket 14 and the tool shank 1 can ensure the sealing performance of the connection between the tool shank 1 and the tool tip 4, prevent the cutting fluid from entering the inner part of the mounting round hole 2 and causing corrosion and damage, and thus extend the service life of the alloy tool tip.

[0030] Working principle: For this alloy tool tip that is convenient for welding, the operator can rotate the bolt 13 with a wrench. When the bolt 13 rotates, it drives the hexagonal prism slider 12 to slide through the threaded connection with the hexagonal prism slider 12. The hexagonal prism slider 12 slides and moves out of the inner part of the hexagonal card hole 10. The operator slides the tool tip 4 downward and drives the cylindrical mounting block 3 and the connecting shaft 9 to slide downward and move out of the inner part of the mounting round hole 2 to complete the disassembly. Then, the operator takes out a new tool tip 4 and inserts the cylindrical mounting block 3 and the connecting shaft 9 into the inner part of the mounting round hole 2, and makes the four positioning blocks 8 slide and engage into the four positioning slots 7. The operator rotates the bolt 13 again with a wrench to drive the two hexagonal prism sliders 12 to move into the two hexagonal card holes 10 to complete the fixation of the tool tip 4. When the tool tip 4 is damaged, it is convenient for the operator to disassemble the tool tip 4 separately. After the cylindrical mounting block 3 is slidably mounted into the inner part of the mounting round hole 2, the cylindrical mounting block 3 slides and drives the gasket 14 to slide and press against the bottom of the tool shank 1. The extrusion between the gasket 14 and the tool shank 1 can ensure the sealing performance of the connection between the tool shank 1 and the tool tip 4, prevent the cutting fluid from entering the inner part of the mounting round hole 2 and causing corrosion and damage.

[0031] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. An alloy tool bit convenient for welding, characterized in that, Including: A tool shank (1) and a tool head fixing device; An installation round hole (2) is opened at the bottom of the tool shank (1), and a cylindrical installation block (3) is slidably connected inside the installation round hole (2); The tool head fixing device includes four positioning blocks (8), a connecting shaft (9), two hexagonal prism sliders (12) and two bolts (13). Four positioning slots (7) are equidistantly arranged in a circular shape on the surface of the cylindrical installation block (3). The connecting shaft (9) is fixedly connected to the top of the cylindrical installation block (3). The connecting shaft (9) is slidably connected inside the installation round hole (2). Two hexagonal prism holes (10) are opened on the surface of the connecting shaft (9). Two hexagonal prism chutes (11) are opened inside the tool shank (1). The two hexagonal prism sliders (12) are respectively slidably connected inside the two hexagonal prism chutes (11). The two hexagonal prism sliders (12) are respectively slidably connected inside the two hexagonal prism holes (10).

2. The alloy tool bit convenient for welding according to claim 1, wherein: The bottom of the cylindrical installation block (3) is fixedly connected with a tool head (4). Four welding slots (5) are equidistantly arranged in a circular shape on the surface of the tool head (4).

3. The alloy cutter head convenient for welding according to claim 2, wherein: Triangular blades (6) are welded inside the four welding slots (5).

4. The alloy tool bit convenient for welding according to claim 1, wherein: The four positioning blocks (8) are fixedly connected to the inner wall of the installation round hole (2) equidistantly in a circular shape. The four positioning blocks (8) are respectively slidably clamped inside the four positioning slots (7).

5. The alloy cutting head convenient for welding according to claim 1, wherein: The two bolts (13) are both rotatably installed inside the tool shank (1). The two bolts (13) are respectively threadedly installed inside the two hexagonal prism sliders (12).

6. The alloy tool bit convenient for welding according to claim 1, characterized in that: A sealing gasket (14) is slidably sleeved on the surface of the cylindrical installation block (3). The top of the sealing gasket (14) is in contact with the bottom of the tool shank (1).

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