CN204353549U - Three teeth tungsten steel milling cutter - Google Patents

Abstract

The utility model discloses a three-tooth tungsten steel milling cutter, comprising a shank portion, a sharpness portion and a tooth portion; the shank portion is a cylinder, the sharpness portion is a cross-section cone, the large end face of the cross-section cone is connected to one end face of the cylinder, the large end face of the cross-section cone is equal to the end face of the cylinder and is coaxially arranged; the tooth portion is connected to the end of the sharpness portion away from the shank portion; the tooth portion comprises a core and three teeth, the core is coaxially arranged with the sharpness portion, the front ends of the three teeth are evenly arranged on the circumferential side of the core, and the spiral extends to the free end of the core, the spiral angle is 45 degrees, and it rotates one-third of a circle along the circumference of the core. The three-tooth tungsten steel milling cutter of the utility model has a simple structure, high cutting accuracy, high gloss on the cutting surface, and a chip accuracy of 0.01 mm. It is in a leading position in the industry and has reached international standards.

Description

Three teeth tungsten steel milling cutter

technical field

The utility model relates to the field of material cutting, in particular to a three-tooth tungsten steel milling cutter.

Background technique

A milling cutter is a rotating tool with one or more teeth for milling. When working, each knife tooth cuts off the allowance of the workpiece intermittently in turn. Milling cutters are mainly used for machining planes, steps, grooves, forming surfaces and cutting off workpieces on milling machines.

The existing milling cutter has low precision, and the cutting surface of the processed product has low gloss.

Utility model content

The main purpose of the utility model is to provide a three-tooth tungsten steel milling cutter with high cutting precision.

In order to achieve the purpose of the above invention, the utility model proposes a three-tooth tungsten steel milling cutter, which includes a handle part, a sharpness part and a cutter tooth part;

The shank part is a cylinder, the sharpness part is a cross-section cone, the large end face of the cross-section cone is connected to one end face of the cylinder, and the large end face of the cross-section cone is equal to the end face of the cylinder And set coaxially; the knife tooth part is connected to the end of the sharpness part away from the knife handle part;

The cutter tooth portion includes a cutter core and three cutter teeth, the cutter core is arranged coaxially with the sharpness portion, the front ends of the three cutter teeth are uniformly arranged on the peripheral side of the cutter core, and extend spirally to The free end of the cutter core has a helix angle of 45 degrees and rotates one-third of the circumference of the cutter core.

Further, the diameter of the handle part is 4 mm; the diameter of the core is 1.65 mm; the diameter of the cylinder formed by the rotation of the free end of the tooth part along the axis of the core is 3 mm. Further, the maximum chip length of the cutter teeth is 8 mm.

Further, the angle after the first forming of the cutter teeth is 10 degrees, and the angle after the second forming is 20 degrees.

Further, the rear angle of the first end tooth of the knife tooth is 10 degrees, the second rear angle of the end tooth is 23 degrees; the front angle of the end tooth is 5 degrees.

Further, the width of the first end tooth is 0.25 mm.

Further, chip pockets are provided at the free ends of the cutter teeth.

In the three-tooth tungsten steel milling cutter of the utility model, the cutter core is coaxially arranged with the sharpness part, which can improve the cutting precision, and the three cutter teeth are evenly arranged on the circumferential direction of the cutter core, and spirally extend to the free end of the cutter core , the helix angle is 45 degrees, which can greatly improve the luminosity of the cutting surface; the three-tooth tungsten steel milling cutter of the utility model has simple structure, high cutting precision, high luminosity of the cutting surface, and chip precision reaches 0.01 mm, which is at the leading level in the industry.

Description of drawings

Fig. 1 is the structural representation of the three-tooth tungsten steel milling cutter of an embodiment of the present utility model;

Fig. 2 is the schematic cross-sectional view of the cutter tooth part of an embodiment of the present utility model;

Fig. 3 is the schematic diagram of end tooth relief angle and end tooth rake angle of an embodiment of the present utility model;

Fig. 4 is a schematic view of the rear angle of forming of an embodiment of the utility model.

The realization, functional characteristics and advantages of the utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Figures 1-4, a three-tooth tungsten steel milling cutter according to an embodiment of the present invention is proposed, including a handle portion 10, a sharpness portion 20 and a cutter tooth portion 30; the handle portion 10 is a cylinder, The sharpness part 20 is a cross-section cone, the large end face of the cross-section cone is connected to one end face of the cylinder, and the large end face of the cross-section cone is equal to the end face of the cylinder and arranged coaxially; The tooth part 30 connects the end of the sharpness part 20 away from the handle part 10; the knife tooth part 30 includes a knife core 32 and three knife teeth 31, and the knife core 32 is arranged coaxially with the sharpness part 20 , the front ends of the three cutter teeth 31 are evenly arranged on the peripheral side of the cutter core 32, and spirally extend to the free end of the cutter core 32, the helical angle is 45 degrees, and rotate one-third of a circle along the cutter core circumferential direction. In the three-tooth tungsten steel milling cutter of this embodiment, the cutter core 32 is arranged coaxially with the sharpness portion 20, which can improve the cutting accuracy. The free end of the core 32 has a helix angle of 45 degrees, which can greatly improve the luminosity of the cutting surface; the three-tooth tungsten steel milling cutter of the utility model has simple structure, high cutting precision, high luminosity of the cutting surface, and chip precision reaches 0.01 mm. At the leading level in the industry.

In this embodiment, the diameter of the handle 10 is 4 mm; the diameter of the core 23 is 1.65 mm; the diameter of the cylinder formed by the rotation of the teeth 31 along the axis of the core 32 is 3 mm. In the milling cutter in this embodiment, the size of each component is coordinated, and the chip material can be polished for the appearance of chips, and the cutting accuracy and luminosity can be improved. The chip accuracy can reach 0.01 mm, reaching the leading level in the industry.

In this embodiment, the maximum chip length of the cutter teeth 31 is 8 mm, which is the maximum length that the cutter teeth 30 participate in when cutting chips. It can accurately cut the chip surface within 8 mm, and the fineness is also leading in the industry.

In this embodiment, the angle 314 after the first forming of the cutter teeth 31 is 10 degrees, and the angle 315 after the second forming is 20 degrees. The angle setting of the forming rear angle can improve the precision and high polishing degree of the cutting product. The angles of 314 after forming 1 and 315 after forming 2 are respectively 10 degrees and 20 degrees, which are the best angles. The formed relief angle can reduce the cutting area between the cutter tooth 31 and the workpiece, and reduce the friction with the surface of the processed workpiece.

In this embodiment, the first end tooth rear 311 angle of the above-mentioned knife teeth 31 is 10 degrees, the second end tooth rear 312 angle is 23 degrees; the front end tooth front angle 313 angle is 5 degrees. The angles set by the first rear end 311 of the end teeth and the second rear end 312 of the end teeth reduce the chip area between the knife 31 and the workpiece and reduce the friction with the surface of the processed workpiece while ensuring the cutting effect. The angle setting of the end tooth rake angle 313 can not only provide sufficient sharpness, but also ensure the rigidity of the cutter tooth 31 .

In this embodiment, the width of the first end tooth 311 is 0.25 mm, which can reasonably control the friction between the cutter tooth 31 and the workpiece.

In this embodiment, the free ends of the cutter teeth 31 are provided with chip pockets, which can remove cut waste.

In this embodiment, a chamfer 11 is provided at the bend between the free end of the handle 10 and the side surface, which facilitates the clamping of the handle 10 and the clamp, and prevents the handle 10 from cutting the user.

The above descriptions are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification of the utility model and the contents of the accompanying drawings may be directly or indirectly used in Other relevant technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (7)

1. A three-tooth tungsten steel milling cutter, characterized in that it comprises a handle portion, a sharpness portion and a cutter tooth portion; The shank part is a cylinder, the sharpness part is a cross-section cone, the large end face of the cross-section cone is connected to one end face of the cylinder, and the large end face of the cross-section cone is equal to the end face of the cylinder And set coaxially; the knife tooth part is connected to the end of the sharpness part away from the knife handle part; The cutter tooth portion includes a cutter core and three cutter teeth, the cutter core is arranged coaxially with the sharpness portion, the front ends of the three cutter teeth are uniformly arranged on the peripheral side of the cutter core, and extend spirally to The free end of the knife core has a helix angle of 45 degrees and rotates one-third of the circle along the circumference of the knife core. 2. The three-tooth tungsten steel milling cutter according to claim 1, wherein the diameter of the handle portion is 4 mm; the diameter of the core is 1.65 mm; the free end of the tooth portion is along the The diameter of the cylinder formed by the rotation of the mandrel axis is 3 mm. 3. The three-tooth tungsten steel milling cutter according to claim 1, wherein the maximum chip length of the cutter teeth is 8 millimeters. 4. The three-tooth tungsten steel milling cutter according to claim 1, wherein the angle after forming one of the teeth is 10 degrees, and the angle after forming two is 20 degrees. 5. The three-tooth tungsten steel milling cutter according to claim 1, characterized in that, the rear angle of the first end tooth of the cutter tooth is 10 degrees, the second rear angle of the end teeth is 23 degrees; the front angle of the end teeth is 5 degrees . 6. The three-tooth tungsten steel milling cutter according to claim 5, wherein the width of the first end tooth is 0.25 millimeters. 7. The three-tooth tungsten steel milling cutter according to any one of claims 1-6, wherein the free ends of the teeth are provided with chip pockets.