CN217492816U

CN217492816U - Milling cutter

Info

Publication number: CN217492816U
Application number: CN202220938234.0U
Authority: CN
Inventors: 廖长娇; 陈升盛
Original assignee: Shenzhen Zhongyeda Precision Technology Co ltd
Current assignee: Shenzhen Zhongyeda Precision Technology Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-09-27
Anticipated expiration: 2032-04-21

Abstract

The utility model is suitable for a cutting equipment technical field provides a milling cutter, including handle of a knife and tool bit, the tool bit has big round end and the small circle end in sharing axle center, the big round end of tool bit with the handle of a knife is connected, just the big round end of tool bit with to the convex way of tool bit axle center indent is radial the smooth transition of small circle end of tool bit, the tool bit periphery seted up by the small circle end of tool bit extends to the circumferential chip groove of handle of a knife, the tool bit periphery with the chip groove joint part constitutes convex cutting edge. The embodiment of the utility model provides a make tool bit periphery and chip groove joint portion constitute convex cutting edge, this milling cutter's convex cutting edge can be disposable mills out convex appearance, mills the waste material of production and automatically falls into arc chip groove, realizes automatic chip removal, is favorable to accelerating cutting speed, improves milling cutter's cutting efficiency.

Description

Milling cutter

Technical Field

The utility model belongs to the technical field of the cutting equipment, especially, relate to a milling cutter.

Background

A milling cutter is a rotating tool with one or more cutter teeth for milling. When in work, each cutter tooth cuts off the allowance of the workpiece in sequence and intermittently, and the milling cutter is mainly used for processing planes, steps, grooves, forming surfaces, cutting off the workpiece and the like on a milling machine. The milling cutter is of a cylindrical milling cutter, a face milling cutter, an end milling cutter, a three-edge milling cutter, an angle milling cutter, a saw blade milling cutter, a T-shaped milling cutter, a sharp-tooth milling cutter, a relieved tooth milling cutter and the like, and the milling cutters are different in purpose and are applied to different cutting scenes.

However, with the continuous progress of science and technology, the requirements of people on material culture life are continuously improved, the aims of high precision, high efficiency and high comfort level are provided for the manufacturing industry, objects needing milling are different in shape, for example, a circular lamp plate, the existing milling cutter on the market cannot be processed at one time, the position and the angle of the milling cutter need to be replaced by various milling cutters or adjusted for many times, in the actual operation process, the milling cutter cannot adapt to more application conditions, the utilization rate of the milling cutter is reduced, the cutting efficiency is low, waste chips generated in the processing process cannot be rapidly discharged, the use experience of the milling cutter is influenced, and the milling cutter is complex, time-consuming and high in production cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a milling cutter aims at solving the problem that current milling cutter cutting efficiency is low.

The utility model discloses a realize like this, a milling cutter, including handle of a knife and tool bit, the tool bit has big round end and the small circle end in sharing axle center, the big round end of tool bit with the handle of a knife is connected, just the big round end of tool bit with to the convex way of tool bit axle center indent is radial the smooth transition of small circle end of tool bit, the tool bit periphery seted up by the small circle end of tool bit extends to the circumferential chip groove of handle of a knife, the tool bit periphery with the chip groove joint part constitutes convex cutting edge.

Optionally, the small rounded end diameter is greater than 2 mm.

Optionally, the ratio of the small circular end diameter to the large circular end diameter is less than 1: 10.

Optionally, the cutting tool further comprises a cylindrical end face cutter coaxial with the tool bit, and a first end of the end face cutter is connected with the small circular end of the tool bit. And the peripheral dimension of the first end of the end face cutter is larger than that of the small round end of the cutter head, the chip discharge groove penetrates through the first end of the end face cutter, and the first end of the end face cutter and the joint part of the chip discharge groove form a linear blade for end face cutting.

Optionally, the chip discharge groove penetrates through the second end of the end face cutter, and the second end of the end face cutter and the joint of the chip discharge groove form a back chipping blade.

Optionally, the second end of the end face cutter is provided with an avoiding inclined plane.

Optionally, the tool holder is cylindrical and coaxial with the tool bit.

Optionally, the large round end diameter is equal to the shank diameter.

Optionally, the flutes extend on the shank a distance less than 1/3 of the shank length.

Optionally, the chip grooves are provided with two, and the two chip grooves are arranged symmetrically with the axis of the cutter head as the center.

The embodiment of the utility model provides an in, through with the big circle end of tool bit in order to the convex way of tool bit axle center indent is radial the little circle end smooth transition of tool bit makes the tool bit periphery form convex, offers the chip groove again at the tool bit periphery, makes the tool bit periphery constitute convex cutting edge with the chip groove joint portion, and this milling cutter's convex cutting edge can be disposable mills out convex appearance, mills the waste material of production and falls into arc chip groove automatically, realizes automatic chip removal, is favorable to accelerating cutting speed, improves milling cutter's cutting efficiency.

Drawings

Fig. 1 is an overall perspective view of the milling cutter provided by the present invention;

fig. 2 is a partial perspective view of the milling cutter provided by the present invention.

In the figure, 10, a knife handle; 20. a cutter head; 21. a large circular end; 22. a small round end; 23. a chip groove; 231. a flat side surface; 232. an arc-shaped side surface; 24. a circular arc blade; 30. an end face cutter; 31. a first end; 311. a linear blade; 32. a second end; 321. a back chipping blade; 322. avoiding the inclined plane.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

As shown in fig. 1, the utility model provides a milling cutter, including handle of a knife 10 and tool bit 20, tool bit 20 has big round end 21 and the small circle end 22 of sharing axle center, tool bit 20 big round end 21 with handle of a knife 10 is connected, just tool bit 20 big round end 21 with to the convex route of tool bit 20 axle center indent is radial the small circle end 22 smooth transition of tool bit 20, tool bit 20 periphery seted up by tool bit 20 small circle end 22 extend to the circumferential chip groove 23 of handle of a knife 10, tool bit 20 periphery with chip groove 23 joint portion constitutes convex cutting edge 24.

The tool shank 10 can be cylindrical, regular polygonal column-shaped and the like, and shares the same axis with the tool bit 20, the tool shank 10 can be cylindrical and regular polygonal column-shaped, so that the milling cutter can be clamped and fixed, the tool shank 10 and the tool bit 20 share the same axis, the tool shank 10 and the tool bit 20 can share the same rotation center, and the jump of the tool bit 20 is reduced.

The diameter of the large circular end 21 can be equal to that of the cutter handle 10, and the circular arc-shaped cutting edge 24 can mill a circular arc-shaped appearance at one time.

In the embodiment of the present invention, the common axis of the large circular end 21 and the small circular end 22 and the axis of the cutter head 20 all refer to the rotation center of the cutter head 20 when rotating. The big round end 21 is close to one end of the knife handle 10, the small round end 22 is far away from one end of the knife handle 10, and any section from the big round end 21 to the small round end 22 is circular.

Alternatively, the chip groove 23 has a flat side 231 and an arc-shaped side 232, the circular arc-shaped cutting edge 24 is disposed on the flat side 231, and the side of the chip groove 23 where the circular arc-shaped cutting edge 24 is located (i.e., the flat side 231) is parallel to the axial direction of the tool tip 20. Further, the axial center of the cutting insert 20 is located on the extension of the side of the chip groove 23 (i.e., the flat side 231) where the circular arc-shaped cutting edge 24 is located.

The flutes 23 extend on the shank 10 a distance less than 1/3 of the length of the shank 10. The tool shank 10 is used for fixing the tool bit 20, in order to enable the tool bit 20 to be fixed more stably, the clamped portion of the tool shank 10 needs to be longer, and the longer the clamped portion of the tool shank 10 is, the more stable the tool bit 20 is, so that the length of the chip groove 23 is not easy to overlong, and if the length of the chip groove 23 is overlong, the chip groove 23 is clamped when the tool shank 10 is fixed, and the chip effect of the chip groove 23 is affected.

Optionally, the diameter of the small round end 22 is larger than 2mm, which is beneficial to ensuring the cutting strength.

Optionally, the ratio of the diameter of the small round end 22 to the diameter of the large round end 21 is less than 1: 10. The larger the radius of the circular arc blade 24, the larger the resistance and reaction force applied during operation, and the higher the strength requirement for the small circular end 22, the embodiment is implemented by setting the ratio of the diameter of the small circular end 22 to the diameter of the large circular end 21 to be less than 1: 10, the diameter of the small round end 22 can be changed along with the change of the radius of the circular arc-shaped blade 24, thereby ensuring the strength of the small round end 22 and preventing the blade at the small round end 22 from being broken.

The embodiment of the utility model provides an in, through with the big circular end 21 of tool bit 20 with to the convex way of the indent of tool bit 20 axle center is radial little circular end 22 smooth transition of tool bit 20 makes the 20 peripheries of tool bit form arc, sets up chip groove 23 again at the 20 peripheries of tool bit, makes the 20 peripheries of tool bit and chip groove 23 joint portion constitute convex cutting edge 24, and this milling cutter's convex cutting edge 24 can be disposable mills out convex appearance, and the waste material that mills the production falls into arc chip groove 23 automatically, realizes automatic chip removal, is favorable to accelerating the cut speed, improves milling cutter's cutting efficiency.

Example two

As shown in fig. 1 and 2, in an optional embodiment of the present invention, the milling cutter further includes an end face cutter 30 having a cylindrical shape and coaxial with the cutter head 20, the first end 31 of the end face cutter 30 is connected to the small round end 22 of the cutter head 20, the peripheral dimension of the first end 31 of the end face cutter 30 is greater than the peripheral dimension of the small round end 22 of the cutter head 20, the chip discharge groove 23 runs through the first end 31 of the end face cutter 30, the first end 31 of the end face cutter 30 and the joint portion of the chip discharge groove 23 form a linear blade 311 for end face cutting. The rotation center of the end face cutter 30 also coincides with the axis of the cutter head 20. The peripheral dimension of the first end 31 of the end face cutter 30 is greater than the peripheral dimension of the small round end 22 of the cutter head 20, so that part of the first end 31 of the end face cutter 30 is exposed out of the small round end 22 of the cutter head 20, the exposed part and the chip removal groove 23 form a linear blade 311 for end face cutting, and the chip removal groove 23 penetrates through the first end 31 of the end face cutter 30, so that a sufficient chip containing space is provided, the chip removal performance is good, and chips can be removed smoothly.

EXAMPLE III

In an alternative embodiment of the present invention, as shown in fig. 2, the flute 23 penetrates through the second end 32 of the end face cutter 30, and the joint of the second end 32 of the end face cutter 30 and the flute 23 forms a back chipping blade 321. The back chipping blade 321 is arranged at the top of the cutter head 20, has no interference, can be used for back chipping and deburring, realizes multiple purposes of a cutter, reduces the cutter changing times and improves the milling efficiency.

Example four

As shown in fig. 2, in an optional embodiment of the present invention, the second end 32 of the end face cutter 30 is provided with an avoiding inclined plane 322, and the avoiding inclined plane 322 is provided to make the end face cutter 30 rotate, so that only the back gouging blade 321 contacts with the surface of the workpiece to be processed, thereby reducing the resistance of the back gouging blade 321 during operation, reducing the loss of the back gouging blade 321, and prolonging the service life of the back gouging blade 321.

EXAMPLE five

As shown in fig. 1 and 2, in an optional embodiment of the present invention, the chip flutes 23 of the milling cutter are provided with two, two chip flutes 23, and accordingly, the two chip flutes are provided with the axis of the cutter head 20, and the two chip flutes are provided with the arc-shaped cutting edges 24, and the axis of the cutter head 20 is provided with the axis of the cutter head 20, and the chip flutes 23 extend in an arc shape, so that the milling cutter can be stably connected without affecting the cutting stability of the milling cutter. The two chip grooves 23 divide the cutter head 20 and the end face cutter 30 into two fan-shaped edges, and the circular arc-shaped cutting edge 24 and the linear cutting edge 311 are fan-shaped edge edges. In the rotating process of the cutter head 20, the two arc-shaped blades 24 have the same motion track, and the two arc-shaped blades 24 can sequentially machine the surface of a workpiece, so that the working efficiency is higher.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a milling cutter, its characterized in that, includes handle of a knife and tool bit, the tool bit has big round end and the small circle end of sharing the axle center, the big round end of tool bit with the handle of a knife is connected, just the big round end of tool bit in order to the convex way of tool bit axle center indent is radial the smooth transition of small circle end of tool bit, the tool bit periphery seted up by the small circle end of tool bit extends to the peripheral chip groove of handle of a knife, the tool bit periphery with the chip groove joint part constitutes convex cutting edge.

2. The milling cutter tool according to claim 1, wherein the small rounded end has a diameter greater than 2 mm.

3. The milling cutter according to claim 1, wherein the ratio of the diameter of the small round end to the diameter of the large round end is less than 1: 10.

4. The milling cutter according to claim 1, further comprising a cylindrical end face cutter concentric with the tool bit, wherein a first end of the end face cutter is connected to the small circular end of the tool bit, and wherein a peripheral dimension of the first end of the end face cutter is greater than a peripheral dimension of the small circular end of the tool bit, the flutes penetrate the first end of the end face cutter, and a junction of the first end of the end face cutter and the flutes forms a linear edge for end face cutting.

5. The milling cutter according to claim 4, wherein the flute extends through a second end of the face cutter, the face cutter second end and the flute junction forming a back chipping blade.

6. The milling cutter tool according to claim 5, wherein the second end of the face cutter is provided with an escape ramp.

7. The milling cutter according to claim 1, wherein the shank is cylindrical and is concentric with the tool bit.

8. The milling cutter tool according to claim 7, wherein the rounded end diameter is equal to the shank diameter.

9. The milling cutter according to claim 1, wherein the flutes extend on the shank a distance less than 1/3 of the shank length.

10. The milling cutter according to any one of claims 1 to 9, wherein two chip flutes open, two of the chip flutes being arranged symmetrically about the axial center of the tool head.