Alloy dovetail milling cutter

Abstract

The utility model discloses an alloy dovetail milling cutter, which is applied to the technical field of cutting tools and is characterized in that an arc-shaped chip containing groove is formed at one end of a cutter head, and a spiral surface circumferential chip discharging groove communicated with the arc-shaped chip containing groove is formed at the joint of the cutter head and a cutter handle; the swallow-tail milling cutter has the beneficial effects that the swallow-tail milling cutter can be thrown out to the inside of the surface circumferential chip removal groove to be discharged through the rotating centrifugal force of the swallow-tail milling cutter, thus improving the chip removal smoothness of the swallow-tail milling cutter, reducing the problems of thermal wear and tooth groove blockage and achieving the effects of improving the machining precision and the machining efficiency; an arc-shaped groove is driven to rotate by rotating a rhombic rotating shaft, so that a connecting rod fixedly connected with a sliding T-shaped plate is driven by the arc-shaped groove, the sliding T-shaped plate is expanded outwards, the surface diameter of the cutter handle is changed, and the cutter handle is adjusted according to the inner diameter of a machine tool spindle; therefore, the dovetail milling cutter can be conveniently mounted on the output ends of the main shafts with different inner diameters, and the practicability of the dovetail milling cutter is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting tools, in particular to an alloy dovetail milling cutter. Background Art

[0002] Dovetail milling cutter is a commonly used milling cutter in CNC machining, also known as dovetail slot cutter. It is a highly efficient milling cutter, and its name comes from the shape of its cutting groove surface, which is like a dovetail. The dovetail milling cutter consists of a cutter head and a shank. The cutter head has several dovetail-shaped teeth, and the shank is generally connected to the machine tool spindle through a round or square shank.

[0003] At present, the Chinese utility model with the publication number of CN211564646U discloses a dovetail milling cutter assembly for relieving stress, including a fixed rod, a cutter bar is arranged at the bottom of the fixed rod, a dovetail cutter is fixedly connected to the bottom end of the cutter bar, a slip ring is sleeved in the hollow cavity arranged in the fixed rod, and the bottom of the slip ring is fixedly connected to the cutter bar. Because the speed of the parts moving is too fast, the collision will occur. At this time, the dovetail cutter forms a cut with the drop surface, and under the action of the cut, the dovetail cutter will move upward. At this time, the dovetail cutter drives the cutter bar to move upward. When the cutter bar moves upward, the slip ring can move upward in the hollow inner cavity of the fixed rod and squeeze the strong spring, and the bottom end of the slide rod squeezes the reset spring in the limit groove. Under the elastic action of the reset spring and the strong spring, the cutter bar can move upward. At this time, the stress can be relieved to avoid the occurrence of cutting quality problems and the dovetail cutter breaking.

[0004] At present, during the milling process of metal products with dovetail milling cutters, the dovetail milling cutter will have problems with metal waste chip removal being blocked, resulting in thermal wear during the milling process and tooth slot blockage problems, which affects the processing accuracy and leads to low processing efficiency, burrs on the edges of products after processing, unstable product quality and short tool life, thereby increasing production costs; at the same time, during the connection and installation process of the existing dovetail milling cutter with the machine tool spindle, it is necessary to ensure that the dovetail milling cutter is compatible with the inner diameter of the spindle output end. If the dovetail milling cutter diameter does not match the inner diameter of the spindle output end, it is difficult to install. This results in the dovetail milling cutter being able to be installed on the spindle output end of one model of machine tool, resulting in low practicality of the dovetail milling cutter. Utility Model Content

[0005] The utility model aims to provide an alloy dovetail milling cutter, which has the advantages of improving the chip removal smoothness of the dovetail milling cutter, reducing the blockage phenomenon and facilitating the installation of the dovetail milling cutter on the output ends of a variety of spindles with different inner diameters.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: an alloy dovetail milling cutter, comprising a shank and a cutter head fixedly connected to the shank, the cutter head comprising a dovetail cutting edge opened at an end away from the shank, a side of the dovetail cutting edge away from the shank is provided with a front end bevel cutting edge, an outer side of the dovetail cutting edge away from the center axis of the cutter head is provided with a side circumferential cutting edge, a side of the cutter head away from the shank is provided with an arc-shaped chip groove used in conjunction with the front end bevel cutting edge, the outer surface of the cutter head is provided with a surface circumferential chip groove connected to the arc-shaped chip groove, and the surface circumferential chip grooves are arranged in a spiral shape.

[0007] The above technical scheme is adopted, by opening an arc-shaped chip groove at one end of the cutter head and opening a surface circumferential chip groove in a spiral shape connected to the arc-shaped chip groove at the connection between the cutter head and the tool handle, so that waste chips can be thrown out to the inside of the surface circumferential chip groove through the centrifugal force of the rotation of the dovetail milling cutter for discharge, thereby improving the chip removal smoothness of the dovetail milling cutter, reducing thermal wear and tooth groove blockage problems, and achieving the effect of improving processing accuracy and processing efficiency; by rotating the diamond shaft to drive the arc groove to rotate, the connecting rod fixedly connected to the sliding T-plate will be driven by the arc groove, so that the sliding T-plate will open outward, changing the surface diameter of the tool handle, and adjusting according to the inner diameter of the machine tool spindle, so as to achieve the function of facilitating the installation of the dovetail milling cutter on the output ends of spindles with various inner diameters, thereby improving the practicality of the dovetail milling cutter.

[0008] The utility model is further configured as follows: a sliding T-plate is slidably connected to the interior of the tool handle away from the tool head, a diamond shaft is rotatably connected to the interior of the tool handle, a threaded sleeve is slidably sleeved on the surface of the diamond shaft and is threadedly connected to the interior of the tool handle, both ends of the sliding T-plate are provided with a wheel disk fixedly sleeved on the surface of the diamond shaft, an arc groove is provided inside the wheel disk, and both sides of the sliding T-plate are fixedly connected to connecting rods slidably connected to the arc groove.

[0009] By adopting the above technical solution, the sliding T-plate can be adjusted according to the inner diameter of the machine tool spindle, so as to facilitate the installation of the dovetail milling cutter on the output ends of spindles with various inner diameters, thereby improving the practicality of the dovetail milling cutter.

[0010] The utility model is further configured as follows: the bottom wall of the arc-shaped chip groove is inclined relative to the horizontal plane from one end close to the center axis of the cutter head to one end far away from the center axis of the cutter head, and the longitudinal cross-sectional area gradually increases.

[0011] The above technical solution is adopted to facilitate the discharge of waste chips to the outside and reduce the clogging phenomenon.

[0012] The utility model is further configured as follows: the knife handle and the knife head are made of an integrally formed alloy and the surfaces thereof are both electroplated with a corrosion-resistant layer.

[0013] By adopting the above technical solution, the dovetail milling cutter has better overall rigidity and its service life is increased.

[0014] The utility model is further configured as follows: an outer side surface of the cutter head close to one end of the cutter handle is provided with a clearance diameter.

[0015] The above technical solution is adopted to ensure that there is enough space between the dovetail milling cutter and the machine tool spindle, so that waste chips can be discharged from the inside of the dovetail milling cutter to the outside.

[0016] The utility model is further configured as follows: the outer surface of the sliding T-shaped plate is provided with anti-slip grooves.

[0017] By adopting the above technical solution, the contact friction between the outer surface and the inner diameter of the machine tool spindle is improved, and the installation stability is improved.

[0018] The utility model is further configured as follows: one end of the knife handle close to the knife head is slidably connected with a rotating sleeve fixedly sleeved with the rhombus rotating shaft.

[0019] The above technical solution is adopted to facilitate the installation and fixation of the dovetail milling cutter by driving the diamond-shaped rotating shaft to rotate.

[0020] In summary, the utility model has the following beneficial effects:

[0021] 1. By opening an arc-shaped chip groove at one end of the cutter head and a surface circumferential chip groove in a spiral shape connected to the arc-shaped chip groove at the connection between the cutter head and the handle, the waste chips can be thrown out by the centrifugal force of the rotation of the dovetail milling cutter to be discharged inside the surface circumferential chip groove, thereby improving the chip removal of the dovetail milling cutter, reducing thermal wear and tooth groove blockage problems, and achieving the effect of improving processing accuracy and processing efficiency;

[0022] 2. By rotating the diamond shaft to drive the arc groove to rotate, the connecting rod fixedly connected to the sliding T-plate will be driven by the arc groove, so that the sliding T-plate will open outward, changing the surface diameter of the tool handle and adjusting it according to the inner diameter of the machine tool spindle, thereby facilitating the installation of the dovetail milling cutter on the output ends of spindles with different inner diameters, thereby improving the practicality of the dovetail milling cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0025] Figure 3 It is a side structural sectional view of the utility model;

[0026] Figure 4 It is a side structural schematic diagram of the utility model.

[0027] Figure numerals: 1. Tool handle; 2. Tool head; 3. Front bevel cutting edge; 4. Side circular cutting edge; 5. Dovetail cutting edge; 6. Arc-shaped chip groove; 7. Surface circular chip groove; 8. Clearance diameter; 9. Diamond shaft; 10. Wheel; 11. Arc groove; 12. Sliding T-plate; 13. Connecting rod; 14. Anti-slip pattern; 15. Rotating sleeve; 16. Threaded sleeve. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] Embodiment 1:

[0030] refer to Figure 1 , Figure 2 , Figure 4 The alloy dovetail milling cutter comprises a tool holder 1 and a cutter head 2 fixedly connected to the tool holder 1, the cutter head 2 comprises a dovetail cutting edge 5 opened at one end away from the tool holder 1, a side of the dovetail cutting edge 5 away from the tool holder 1 is provided with a front end bevel cutting edge 3, and the outer side of the dovetail cutting edge 5 away from the center axis of the tool holder 2 is provided with a side circumferential cutting edge 4, and a side of the tool holder 2 away from the tool holder 1 is provided with an arc-shaped chip groove 6 used in conjunction with the front end bevel cutting edge 3, and the outer surface of the tool holder 2 is provided with a surface circumferential chip groove 7 connected with the arc-shaped chip groove 6, and the surface circumferential chip groove 7 is arranged in a spiral shape; by providing an arc-shaped chip groove 6 at one end of the tool holder 2 and providing a surface circumferential chip groove 7 connected with the arc-shaped chip groove 6 in a spiral shape at the connection between the tool holder 2 and the tool holder 1, waste chips can be thrown out by the centrifugal force of the rotation of the dovetail milling cutter to be discharged from the inside of the surface circumferential chip groove 7, thereby improving the chip removal smoothness of the dovetail milling cutter, reducing thermal wear and tooth groove blockage problems, and achieving the effect of improving machining accuracy and machining efficiency.

[0031] refer to Figure 4 The bottom wall of the arc-shaped chip groove 6 is inclined relative to the horizontal plane from one end close to the center axis of the cutter head 2 to the end away from the center axis of the cutter head 2, and the longitudinal cross-sectional area gradually increases, which is convenient for discharging waste chips to the outside and reducing blockage.

[0032] refer to Figure 1 The tool handle 1 and the tool head 2 are made of an integrally formed alloy and the surfaces are electroplated with a corrosion-resistant layer, so that the dovetail milling cutter has better overall rigidity and improves its service life.

[0033] refer to Figure 2 The outer side surface of the cutter head 2 near the end of the cutter handle 1 is provided with a clearance diameter 8 to ensure that there is enough space between the dovetail milling cutter and the machine tool spindle to facilitate the discharge of waste chips from the inside of the dovetail milling cutter to the outside.

[0034] A brief description of the usage process: an arc-shaped chip groove 6 is provided at one end of the cutter head 2 and a surface circumferential chip groove 7 is provided at the connection between the cutter head 2 and the tool handle 1, so that when the dovetail milling cutter is installed on the machine tool spindle with the front end bevel cutting edge 3 and the side circumferential cutting edge 4 and the dovetail cutting edge 5 to mill the workpiece, the waste chips milled on the workpiece are concentrated inside the arc-shaped chip groove 6. Since the bottom wall of the arc-shaped chip groove 6 is inclined relative to the horizontal plane from the end close to the center axis of the cutter head 2 to the end away from the center axis of the cutter head 2 and the longitudinal cross-sectional area gradually increases, the waste chips can be thrown out to the inside of the surface circumferential chip groove 7 very smoothly through the centrifugal force of the rotation of the dovetail milling cutter, and finally the waste chips can be discharged from the inside of the dovetail milling cutter through the surface circumferential chip groove 7.

[0035] Embodiment 2:

[0036] refer to Figure 1 , Figure 2 , Figure 3 , alloy dovetail milling cutter, the internal sliding connection of the tool handle 1 away from the end of the cutter head 2 is provided with a sliding T-plate 12, the internal rotation connection of the tool handle 1 is provided with a diamond shaft 9, the surface of the diamond shaft 9 is slidably sleeved with a threaded sleeve 16 connected to the internal thread of the tool handle 1, and both ends of the sliding T-plate 12 are provided with a wheel disk 10 fixedly sleeved on the surface of the diamond shaft 9, and an arc groove 11 is opened inside the wheel disk 10. Both sides of the sliding T-plate 12 are fixedly connected with a connecting rod 13 slidably connected to the arc groove 11; by rotating the diamond shaft 9 to drive the arc groove 11 to rotate, the connecting rod 13 fixedly connected to the sliding T-plate 12 will be driven by the arc groove 11, so that the sliding T-plate 12 is opened outward, the surface diameter of the tool handle 1 is changed, and it is adjusted according to the inner diameter of the machine tool spindle, so as to achieve the function of facilitating the installation of the dovetail milling cutter on the output end of a variety of spindles with different inner diameters, thereby improving the practicality of the dovetail milling cutter.

[0037] refer to Figure 1 , Figure 2 , Figure 3 The outer surface of the sliding T-plate 12 is provided with anti-skid grooves 14 to increase the contact friction between the outer surface and the inner diameter of the machine tool spindle and improve the stability of the installation.

[0038] refer to Figure 1 , Figure 2 One end of the handle 1 near the cutter head 2 is slidably connected with a rotating sleeve 15 fixedly sleeved with the rhombus shaft 9, so as to drive the rhombus shaft 9 to rotate and install and fix the dovetail milling cutter.

[0039] A brief description of the usage process: the wheel disc 10 is driven to rotate by rotating the diamond shaft 9, so that the arc groove 11 inside the wheel disc 10 drives the connecting rod 13 to slide inside during the rotation process, and the sliding T-plate 12 is fixed and limited by the tool handle 1, so that the connecting rod 13 fixedly connected to the sliding T-plate 12 can only slide inside the tool handle 1 under the drive of the arc groove 11, so that the sliding T-plate 12 is opened outward, and the surface diameter of the tool handle 1 is changed. At the same time, during the rotation of the diamond shaft 9, the threaded sleeve 16 will engage with the internal thread of the tool handle 1, thereby sliding back and forth on the surface of the diamond shaft 9, so that the sliding T-plate 12 can be self-locking and fixed through the thread engagement friction between the threaded sleeve 16 and the tool handle 1 to prevent it from automatically retracting into the tool handle 1.

[0040] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An alloy dovetail milling cutter, comprising a shank (1) and a cutter head (2) fixedly connected to the shank (1), characterized in that: The cutter head (2) comprises a dovetail cutting edge (5) disposed at an end away from the cutter handle (1); a front bevel cutting edge (3) is disposed on a side of the dovetail cutting edge (5) away from the cutter handle (1); a side circumferential cutting edge (4) is disposed on an outer side of the dovetail cutting edge (5) away from the center axis of the cutter head (2); an arc-shaped chip groove (6) used in conjunction with the front bevel cutting edge (3) is disposed on a side of the cutter head (2) away from the cutter handle (1); a surface circumferential chip removal groove (7) connected to the arc-shaped chip groove (6) is disposed on the outer surface of the cutter head (2); and the surface circumferential chip removal groove (7) is arranged in a spiral shape.

2. The alloy dovetail milling cutter according to claim 1, characterized in that: The end of the knife handle (1) away from the knife head (2) is internally slidably connected to a sliding T-shaped plate (12), the interior of the knife handle (1) is rotatably connected to a rhombus rotating shaft (9), the surface of the rhombus rotating shaft (9) is slidably sleeved with a threaded sleeve (16) which is threadedly connected to the interior of the knife handle (1), both ends of the sliding T-shaped plate (12) are provided with a wheel disc (10) which is fixedly sleeved on the surface of the rhombus rotating shaft (9), an arc groove (11) is provided inside the wheel disc (10), and both sides of the sliding T-shaped plate (12) are fixedly connected to a connecting rod (13) which is slidably connected to the arc groove (11).

3. The alloy dovetail milling cutter according to claim 1, characterized in that: The bottom wall of the arc-shaped chip groove (6) is inclined relative to the horizontal plane from one end close to the central axis of the cutter head (2) to the end far from the central axis of the cutter head (2), and the longitudinal cross-sectional area gradually increases.

4. The alloy dovetail milling cutter according to claim 1, characterized in that: The knife handle (1) and the knife head (2) are made of an integrally formed alloy and both surfaces are electroplated with a corrosion-resistant layer.

5. The alloy dovetail milling cutter according to claim 1, characterized in that: The outer side surface of the cutter head (2) close to one end of the cutter handle (1) is provided with a clearance diameter (8).

6. The alloy dovetail milling cutter according to claim 2, characterized in that: The outer surface of the sliding T-shaped plate (12) is provided with anti-slip grooves (14).

7. The alloy dovetail milling cutter according to claim 2, characterized in that: A rotating sleeve (15) is slidably connected to one end of the knife handle (1) close to the knife head (2) and is fixedly sleeved with the rhombus-shaped rotating shaft (9).

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