Scale-shaped milling cutter

Abstract

The utility model relates to a squamous milling cutter which comprises a cutter body, and a plurality of squamous cutting edges are machined and formed on the circumferential surface of the cutter body. The temperature of the milling cutter is obviously reduced under the condition of high-speed rotation, so that the milling cutter can work conveniently, and the service life of the milling cutter is prolonged.

Description

Technical Field

[0001] The present application relates to the field of milling tools, and in particular to a scale milling cutter. Background Art

[0002] A milling cutter is a rotary tool with one or more teeth used for milling. Each tooth cuts off the excess of the workpiece intermittently in sequence during operation. Milling cutters are mainly used to process planes, steps, grooves, forming surfaces and cut off workpieces on milling machines.

[0003] A common milling cutter is a spiral integral blade with a chip groove formed between two adjacent blades. During the milling process, continuous cutting chips generated from the workpiece are gradually discharged through the chip groove.

[0004] With respect to the above-mentioned related technologies, the inventors believe that when using a traditional milling cutter for milling operations, the high-speed rotation of the milling cutter and the workpiece as well as the contact with the cutting chips will cause the temperature of the milling cutter itself to rise suddenly, which is not conducive to the operation of the milling cutter and will also shorten the practical life of the milling cutter. Summary of the invention

[0005] In order to reduce the temperature rise rate of the milling cutter itself, facilitate the operation of the milling cutter and extend the service life of the milling cutter, the present application provides a scaly milling cutter.

[0006] The scale milling cutter provided in this application adopts the following technical solution:

[0007] A scale-shaped milling cutter comprises a cutter body, on the peripheral surface of which a plurality of scale-shaped cutting edges are machined and formed.

[0008] By adopting the above technical solution, the multiple scaly blades on the cutter body can effectively improve the milling rate of the milling cutter when processing a workpiece, and can cut off the strip-shaped chips multiple times, thereby accelerating the chip discharge speed, reducing the contact time between the milling cutter and the chips, and effectively slowing down the temperature rise rate of the milling cutter itself. At the same time, compared with the traditional spiral integral blade, the scaly blades have a relatively large number of scaly blades and the volume of a single scaly blade is relatively small. When the temperature of the scaly blades rises, it is beneficial for the temperature to be transferred to the cutter body, further reducing the temperature rise rate of the cutter body, thereby effectively extending the service life of the milling cutter.

[0009] Optionally, a left spiral chip groove and a right spiral chip groove are formed between two adjacent scale-like cutting edges.

[0010] By adopting the above technical solution, multiple chip removal grooves can effectively improve the chip removal efficiency during the operation of the milling cutter, and further help to slow down the heating rate of the milling cutter.

[0011] Optionally, the scale milling cutter further comprises a tool handle connected to the tool body, wherein the tool handle coincides with the axis of the tool body.

[0012] By adopting the above technical solution, it is convenient to replace the knife body after long-term use, so that the knife handle and other parts can be reused, thereby effectively reducing the use cost.

[0013] Optionally, the knife body is processed into a cylindrical shape with one end being a closed end and the other end being an open end, one end of the knife handle is fixedly connected to an extension column, and the knife body can be sleeved on the extension column;

[0014] The scale milling cutter further comprises a bolt which penetrates through the closed end of the cutter body and is threadedly connected to the extension column.

[0015] By adopting the above technical solution, the knife body can be stably and reliably connected to the knife handle, and the knife body can be easily disassembled from the knife handle. The overall structure is simple, which is conducive to the staff to replace the knife body.

[0016] Optionally, an end edge is formed on the closed end of the blade body.

[0017] Optionally, after the bolt is connected to the extension column, the outer surface of the bolt is flush with the blade surface of the end blade.

[0018] By adopting the above technical solution, the flush blade surface of the end blade can not only improve the protection of the end blade, but also improve the accuracy of the milling cutter when processing the workpiece, and reduce the possibility of the end blade causing damage to the workpiece.

[0019] Optionally, the diameter of the end face of the tool handle is larger than the diameter of the end face of the extension column, and the axis of the tool handle coincides with the axis of the extension column.

[0020] Optionally, a plane section is formed along the axis direction of the extension column, the end face of the extension column is D-shaped, and the internal space of the knife body is adapted to the shape of the extension column.

[0021] By adopting the above technical solution, the flat cut surface can not only limit the cutter body and reduce the tendency of the cutter body to rotate relative to the extension column, but also effectively reduce the torque applied by the cutter body to the bolt during high-speed rotation of the cutter body, thereby improving the stability of the cutter body installation.

[0022] Optionally, a washer is embedded on the end surface of the knife handle connected to the extension column, the outer diameter of the washer is smaller than the outer diameter of the knife handle, and the surface of the washer close to the extension column protrudes from the end surface of the knife handle.

[0023] By adopting the above technical solution, after the cutter body is installed on the extension column using bolts, the end face of the cutter body squeezes the gasket, causing the gasket to apply a force on the cutter body opposite to the installation direction of the cutter body, thereby cooperating with the bolts to stably connect the cutter body to the extension column.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. By setting the cutter body and the scaly blade, the milling rate of the milling cutter when processing the workpiece is effectively improved, the strip-shaped cutting chips are cut off multiple times, and the contact time between the milling cutter and the cutting chips is reduced. The number of scaly blades is relatively large, and the volume of a single scaly blade is relatively small, which is conducive to the conduction of temperature to the cutter body, effectively slowing down the speed of the temperature rise of the milling cutter itself, thereby effectively extending the service life of the milling cutter;

[0026] 2. By setting the left spiral chip removal groove and the right spiral chip removal groove, the chip removal efficiency of the milling cutter is effectively improved during operation, which further helps to slow down the temperature rise rate of the milling cutter;

[0027] 3. By providing a knife handle, it is convenient to replace the knife body after long-term use, so that the knife handle and other parts can be reused, thereby effectively reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of the scale-shaped milling cutter in the first embodiment.

[0029] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the scale-shaped milling cutter in the second embodiment.

[0030] Figure 3 It is a schematic diagram of the structure of the extension column.

[0031] Explanation of the reference numerals: 1. tool body; 11. left spiral chip groove; 12. right spiral chip groove; 13. scaly blade; 14. end blade; 2. tool handle; 21. annular section; 3. extension column; 31. threaded hole; 32. flat section; 4. bolt; 5. washer. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 , further details of this application are given.

[0033] Embodiment 1

[0034] The present application embodiment discloses a scale-shaped milling cutter, referring to Figure 1 The scale milling cutter includes an integrally formed cutter body 1 and a cutter handle 2. The axes of the cutter body 1 and the cutter handle 2 coincide with each other, and the two have the same diameter. A left spiral chip groove 11 and a right spiral chip groove 12 are formed on the circumference of the cutter body 1 around the axis of the cutter body 1. The left spiral chip groove 11 and the right spiral are respectively processed in multiples, and a plurality of parallelogram structures are formed between the two. The parallelogram structures are processed to form a scale blade 13. Multiple end blades 14 are also formed at one end of the cutter body 1 away from the cutter handle 2. The multiple end blades 14 are evenly distributed at equal angles around the center of the end face of the cutter body 1.

[0035] Reference Figure 1At the end of the tool handle 2 away from the tool body 1, the edge of the end face of the tool handle 2 is processed around the axis of the tool handle 2 to form an annular section 21. The annular section 21 significantly reduces the area of ​​the end face of the tool handle 2, thereby facilitating the insertion of the tool handle 2 on the fixture of the milling machine and improving the convenience of using the milling cutter.

[0036] Embodiment 2

[0037] The difference between this embodiment and the first embodiment is that:

[0038] Reference Figure 2 The cutter body 1 and the cutter handle 2 are detachably connected, which is convenient for replacing the cutter body 1 that cannot perform conventional milling after long-term use, so as to reuse the non-consumable cutter body 1, effectively reducing the use cost. The cutter body 1 is processed into a cylindrical structure with one end as a closed end and the other end as an open end, and the end blade 14 is located on the end surface of the closed end of the cutter body 1.

[0039] Reference Figure 2 The scale-shaped milling cutter also includes an extension column 3 integrally formed on the end of the shank 2 away from the cutting surface, a bolt 4 for connecting the cutter body 1, and a washer 5 embedded on the end surface of the shank 2. The internal space of the cutter body 1 is adapted to the shape of the extension column 3, and the cutter body 1 can be sleeved on the extension column 3.

[0040] Combination Figure 2 and Figure 3 The diameter of the extension column 3 is smaller than the diameter of the handle 2, and the axis of the extension column 3 coincides with the axis of the handle 2. A threaded hole 31 for screwing a bolt 4 is processed on the end surface of the extension column 3 away from the handle 2. In this embodiment, there are two bolts 4 and two threaded holes 31.

[0041] Combination Figure 2 and Figure 3 A countersunk hole for the bolt 4 to penetrate is provided on the blade surface of the end blade 14, which is not shown in the figure, and a threaded hole 31 is cut obliquely and provided on the end surface of the extension column 3. When the bolt 4 penetrates the through hole of the end blade 14 and is screwed into the threaded hole 31, the outer surface of the bolt 4 is flush with the blade surface of the end blade 14, and the end surface of the opening end of the blade body 1 is in contact with the end surface of the handle 2.

[0042] Reference Figure 3 A flat cut surface 32 is formed on the extension column 3 along the axial direction of the extension column 3, so that the end face of the extension column 3 is D-shaped. After the cutter body 1 is sleeved on the extension column 3, the flat cut surface 32 can limit the cutter body 1, reduce the tendency of the cutter body 1 to rotate relative to the extension column 3 during high-speed rotation, and reduce the torque of the cutter body 1 on the bolt 4, thereby improving the stability of the bolt 4 on the installation of the cutter body 1.

[0043] Combination Figure 2 and Figure 3The washer 5 is sleeved on the outside of the extension column 3, and the outer diameter of the washer 5 is smaller than the outer diameter of the handle 2. Therefore, after the cutter body 1 is connected to the handle 2, the washer 5 can be hidden, thereby protecting the washer 5 and reducing the entry of fine cutting chips into the cutter body 1 during high-speed rotation. The outer surface of the washer 5 facing the extension column 3 protrudes from the end face of the handle 2. After the cutter body 1 is connected to the handle 2, the washer 5 can apply a reaction force to the cutter body 1 in the installation direction of the cutter body 1. The reaction force has a tendency to push the cutter body 1 away from the handle 2, effectively reducing the possibility of the bolt 4 loosening due to the vibration generated when the scale milling cutter rotates at high speed to mill the workpiece, thereby improving the stability of the connection between the cutter body 1 and the handle 2.

[0044] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A scale milling cutter, characterized in that: It comprises a knife body (1), on the peripheral surface of which a plurality of scale-like blades (13) are machined and formed; A left spiral chip removal groove (11) and a right spiral chip removal groove (12) are formed between two adjacent scale-shaped blade edges (13); The scale milling cutter also includes a tool handle (2) connected to the tool body (1), and the axis of the tool handle (2) coincides with the axis of the tool body (1).

2. A scale milling cutter according to claim 1, characterized in that: The knife body (1) is processed into a cylindrical shape with one end being a closed end and the other end being an open end; one end of the knife handle (2) is fixedly connected to an extension column (3), and the knife body (1) can be sleeved on the extension column (3); The scale milling cutter also includes a bolt (4), which penetrates through the closed end of the cutter body (1) and is threadedly connected to the extension column (3).

3. A scale milling cutter according to claim 2, characterized in that: An end blade (14) is machined on the closed end of the knife body (1).

4. A scale milling cutter according to claim 3, characterized in that: After the bolt (4) is connected to the extension column (3), the outer surface of the bolt (4) is flush with the blade surface of the end blade (14).

5. A scale milling cutter according to claim 2 or 4, characterized in that: The diameter of the end face of the knife handle (2) is greater than the diameter of the end face of the extension column (3), and the axis of the knife handle (2) coincides with the axis of the extension column (3).

6. A scale milling cutter according to claim 5, characterized in that: A flat cut surface (32) is formed along the axial direction of the extension column (3); the end surface of the extension column (3) is D-shaped, and the internal space of the knife body (1) is adapted to the shape of the extension column (3).

7. The scale milling cutter according to claim 1, characterized in that: A washer (5) is embedded on the end surface of the knife handle (2) connected to the extension column (3); the outer diameter of the washer (5) is smaller than the outer diameter of the knife handle (2), and the surface of the washer (5) close to the extension column (3) protrudes from the end surface of the knife handle (2).

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