CN213288837U

CN213288837U - Milling cutter

Info

Publication number: CN213288837U
Application number: CN202021833675.1U
Authority: CN
Inventors: 顾羽; 龚国锋; 张伟彪
Original assignee: Shanghai Huasheng Precision Machinery Technology Co ltd
Current assignee: Shanghai Huasheng Precision Machinery Technology Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-05-28
Anticipated expiration: 2030-08-27

Abstract

The utility model provides a milling cutter, milling cutter includes the cutting part, the cutting part includes first cutting edge and second cutting edge, first cutting edge includes a plurality of first sword teeth, the second cutting edge includes a plurality of second sword teeth, first sword tooth and the second sword tooth are wrong tooth structure; the vibration of the cutter can be staggered during processing, so that the vibration is reduced, and the service life of the cutter is prolonged. The first cutting edge can process uneven blank surfaces to finish one surface, and the second cutting edge can process another relatively flat surface to finish the other surface after the first cutting edge finishes the processing of one surface. Therefore, the V-shaped groove can be machined by one tool.

Description

Milling cutter

Technical Field

The utility model relates to a machining cutter technical field, in particular to milling cutter.

Background

A milling cutter is a rotating tool with one or more cutter teeth for milling. The cutter teeth are particularly applied to cutting machining, and each cutter tooth is used for intermittently cutting off the allowance of a workpiece in sequence during working so as to realize milling machining of the workpiece. The milling cutter is mainly used for processing planes, steps, grooves, forming surfaces, cutting workpieces and the like on a milling machine. At present, a milling cutter is generally adopted to process one surface firstly, then a processed piece is fixed and processed on the other surface reversely, one groove needs to be processed by two cutters or one cutter needs to be processed twice, and the processing is complex. In addition, the angle and the depth of the V-shaped inclined plane are difficult to guarantee, meanwhile, the precision of the V-shaped inclined plane is also difficult to guarantee, not only is the production efficiency low, but also the tool is in contact with a machined part in the machining process to form large vibration, so that vibration lines appear on the tool, the service life of the tool is short, the machining efficiency is low, and the machining of the whole product is influenced.

During milling, the strong extrusion and friction between the cutter and the bottom layer of the chip obviously reduce the flow speed of the bottom layer of the chip, and a thin stagnant layer is generated, so that relative slippage is generated between the upper layer metal of the chip and the stagnant layer. Under certain conditions, when the friction force between the front face of the cutter and the bottom layer of the chip is larger than the internal friction force, the metal of the viscous layer is separated from the chip and is adhered to the front face of the cutter. The bottom layer of the formed chip flows along the bonded layer relatively, when the chip is continuously cut, a new stagnant layer appears, and when the friction force between the old stagnant layer and the new stagnant layer is larger than the internal friction force between the upper metal layer of the chip and the new stagnant layer, the new stagnant layer is bonded again. The generated built-up edge is too large, so that the machining precision of the milling cutter is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sword to solve the problem that milling cutter life among the prior art is short, machining efficiency is low.

In order to solve the technical problem, the utility model provides a milling cutter, milling cutter includes:

the cutting edge comprises a first cutting edge and a second cutting edge, the first cutting edge comprises a plurality of first cutter teeth, the second cutting edge comprises a plurality of second cutter teeth, and the first cutter teeth and the second cutter teeth are of staggered tooth structures;

a shank connected with the blade.

Optionally, in the milling cutter, the first cutting edge further includes a first base plate, a plurality of first cutting teeth are fixed on a side surface of the first base plate, the plurality of first cutting teeth are uniformly distributed, and an included angle formed between two side edges of each first cutting tooth and a side edge of the first base plate is different; the second cutting edge further comprises a second base plate, the second cutter teeth are fixed to the side face of the second base plate and are evenly distributed, and each of two side edges of each second cutter tooth is different from an included angle formed by the side edge of the second base plate.

Optionally, in the milling cutter, the first base plate and the second base plate are coaxially connected.

Optionally, in the milling cutter, a blind hole is formed in the center of the first base plate.

Optionally, in the milling cutter, the first cutting edge and the second cutting edge have opposite teeth.

Optionally, in the milling cutter, the shank includes a shank, and the shank is a straight shank.

Optionally, in the milling cutter, the shank further includes a blocking portion, the blocking portion is in a shape of a conical truncated cone, a larger end of the blocking portion is connected to the cutter handle, and a smaller end of the blocking portion is connected to the second base plate.

Optionally, in the milling cutter, chamfers are arranged at one end of the cutter handle, which is far away from the blocking portion, and at the larger end of the cutter handle.

Optionally, in the milling cutter, the milling cutter further includes a connecting shaft, and the connecting shaft is sequentially connected to the first base plate, the second base plate, the blocking portion, and the cutter handle.

Optionally, in the milling cutter, the surface of the blade portion has an imprint coating or a laser coating.

The utility model provides a milling cutter, in the milling cutter, the cutting part includes first cutting edge and second cutting edge, first cutting edge includes a plurality of first sword teeth, the second cutting edge includes a plurality of second sword teeth, first sword tooth and the second sword tooth are wrong tooth structure; the vibration of the cutter can be staggered during processing, so that the vibration is reduced, and the service life of the cutter is prolonged. The first cutting edge can process uneven blank surfaces during processing, and after the first cutting edge finishes processing of one surface, the second cutting edge can process another relatively flat surface to finish processing of the other surface. Therefore, the machining of one groove can be completed by one cutter, the cutter changing time is saved, and the machining efficiency is improved.

Drawings

Fig. 1 is an overall schematic view of a milling cutter according to an embodiment of the present invention;

fig. 2 is a schematic view of a first blade according to an embodiment of the present invention;

fig. 3 is a schematic view of a second blade according to an embodiment of the present invention;

wherein the reference numerals are as follows:

100-a milling cutter; 110-a blade; 111-a first blade edge; 1111-a first cutter tooth; 1112-a first base plate; 112-a second blade edge; 1121-second cutter tooth; 1122-second base plate; 113-blind hole; 120-a handle; 121-a knife handle; 122-chamfering; 123-a barrier; 140-connecting shaft.

Detailed Description

The milling cutter according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

The core idea of the present application is to provide a milling cutter, comprising: the cutting edge comprises a first cutting edge and a second cutting edge, the first cutting edge comprises a plurality of first cutter teeth, the second cutting edge comprises a plurality of second cutter teeth, and the first cutter teeth and the second cutter teeth are of staggered tooth structures; the vibration of the cutter can be staggered during processing, so that the vibration is reduced, and the service life of the cutter is prolonged. The first cutting edge can process uneven blank surfaces to finish one surface, and the second cutting edge can process another relatively flat surface to finish the other surface after the first cutting edge finishes the processing of one surface. Therefore, the machining of one groove can be completed by one cutter, the cutter changing time is saved, and the machining efficiency is improved. The present application will now be further described with reference to specific embodiments.

Please refer to fig. 1 to fig. 3, wherein fig. 1 is an overall schematic view of a milling cutter according to an embodiment of the present invention, fig. 2 is a schematic view of a first blade according to an embodiment of the present invention, and fig. 3 is a schematic view of a second blade according to an embodiment of the present invention. The milling cutter 100 includes: an edge portion 110, the edge portion 110 comprising a first blade 111 and a second blade 112, the first blade comprising a plurality of first blade teeth 1111, the second blade comprising a plurality of second blade teeth 1121, the first blade teeth 1111 and the second blade teeth 1121 presenting a staggered tooth structure; when the machining is carried out, the time intervals of the vibration are different, the vibration caused by the machining can be reduced, the pressure and the friction force during the machining can be reduced, the formation of accumulated chips is reduced, and the machining accuracy is improved. In addition, the number of the first cutter teeth is the same as that of the second cutter teeth, and the first cutter teeth and the second cutter teeth can act on the machined surface with the same cutting force during machining, so that the machined surface is uniformly stressed.

In the embodiment of the present application, the first blade 111 further includes a first base plate 1112, a plurality of first blade teeth 1111 are fixed on a side surface of the first base plate 1112, the plurality of first blade teeth 1111 are uniformly distributed, and two side edges of each first blade tooth 1111 form different included angles with the side edges of the first base plate 1112. The second blade 112 further includes a second base plate 1122, a plurality of second teeth 1121 are all fixed on a side surface of the second base plate 1122, the teeth of the plurality of second teeth 1121 are uniformly distributed, and an included angle formed between two sides of each second tooth 1121 and a side of the second base plate 1122 is different. Therefore, the first cutting edge and the second cutting edge can be flexibly machined during machining.

The shape and size of the first substrate 1112 may be the same as those of the second substrate 1122. Further, an included angle formed between two sides of each first blade tooth 1111 and a side of the first base plate 1112 may be the same as an included angle formed between two sides of each second blade tooth 1121 and a side of the second base plate 1122. That is, a first angle and a second angle formed by two sides of each first blade 1111 and a side of the first base plate 1112 may be the same as a third angle and a fourth angle formed by two sides of each second blade 1121 and a side of the second base plate 1122, respectively. Thereby, the mounting and alignment of the first blade 111 and the second blade 112 may be facilitated. In other embodiments of the present application, the shape and size of the first base plate 1112 may be different from the shape and size of the second base plate 1122. In addition, the included angle formed by the two sides of each first blade tooth 1111 and the side of the first base plate 1112 may be different from the included angle formed by the two sides of each second blade tooth 1121 and the side of the second base plate 1122; alternatively, an included angle formed by two sides of each first blade tooth 1111 and a side of the first base plate 1112 is the same as an included angle formed by two sides of each second blade tooth 1121 and a side of the second base plate 1122, and another included angle formed by two sides of each first blade tooth 1111 and a side of the first base plate 1112 is different from another included angle formed by two sides of each second blade tooth 1121 and a side of the second base plate 1122.

In the embodiment of the present application, a blind hole 113 is formed at the center of the first base plate 1112, wherein the blind hole 113 may be circular, square, or the like. The blind hole 113 can be used as a positioning reference, so that the milling cutter 100 can be conveniently installed, and further, the blind hole 113 can improve the machining precision.

When the milling cutter is machined, the first cutting edge 111 and the second cutting edge 112 have opposite tooth directions, so that the first cutting edge 111 and the second cutting edge 112 can realize opposite machining rotation directions. When the milling cutter 100 is machined, the first cutting edge rotates the first cutting tooth to cut one surface, and after the second cutting edge is machined by the first cutting edge, the second cutting edge rotates the second cutting tooth to cut the other surface, so that one milling cutter can be used for machining one groove. For example, the first blade is used for processing an uneven blank surface, and after the first blade is processed, the second blade is used for processing another relatively flat surface, so that blade jumping of the cutter caused by allowance can be avoided, and the service life of the cutter is prolonged. When mounted, the first blade edge 111 and the second blade edge 112 are on the same axis. The first cutting edge 111 and the second cutting edge 112 are designed so that the milling cutter 100 can process one surface without changing the tool after processing the other surface, thereby improving the processing efficiency. Meanwhile, the deviation caused by repeated tool changing can be avoided, and the machining precision is improved.

As shown in fig. 1, the milling cutter 100 includes a shank 120, the shank 120 being connected to the blade. The shank 120 includes a shank 121, which is a straight shank. Preferably, the shank is cylindrical, thereby facilitating gripping of the shank 121 and thus facilitating use of the milling cutter 100. Further, the shank 121 can transmit speed and torque when the milling cutter 100 is machined, and the shank 121 has excellent strength, rigidity, wear resistance, manufacturing accuracy and clamping force, so that machining accuracy can be improved when machining is performed.

In the present embodiment, as shown in fig. 1, the shank further includes a stopper 123, and the stopper 123 is connected to the shank 121 and can separate the shank 121 and the cutting portion 110 to prevent the milling cutter 100 from scratching the cutting portion 110 during installation. The blocking part 123 is in a shape of a conical circular truncated cone, the larger end of the blocking part 123 is connected with the tool shank 121, and the smaller end of the blocking part 123 is connected with the second base plate 112. This can save the material of the milling cutter, and can provide a sufficient rotation space for the cutting edge 110 during machining, thereby avoiding scratches on the shank 120. The diameter of the stopper 123 is larger than that of the shank 121, which facilitates the installation of the milling cutter 100 and can facilitate the machining of the milling cutter 100. In this embodiment, a chamfer 140 is provided at one end of the tool shank away from the blocking portion and at the larger end of the blocking portion. The chamfer 140 can remove burrs on the surface of the cutter handle, scratch during the process of clamping the milling cutter 100 is avoided, and the service life of the milling cutter 100 is prolonged. In practical use, the chamfer 140 can be provided with chamfers with different angles, such as 45 degrees, 90 degrees and the like, according to practical requirements. In this embodiment 45 ° chamfers are used for the shank away from the stop end, and chamfers of other angles may be used depending on the design of the milling cutter, not limited to 45 ° chamfers.

As shown in fig. 1, the milling cutter 100 further includes a connecting shaft 140, the diameter of the connecting shaft 140 is the same as that of the cutter handle 121, the connecting shaft 140 is sequentially connected to the first cutting edge 111, the second cutting edge 112, the blocking portion 123 and the cutter handle 121, and the milling cutter 100 is integrated through the connecting shaft 140, so that the machining cost of the cutter can be saved.

In this embodiment, the milling cutter is mainly used for machining grooves, so that there is a requirement for a material, which is required to have sufficient hardness to cut into a workpiece, a large amount of heat is generated during the cutting process of the cutter, and particularly, the temperature is increased at a high rotation speed, so that the cutter is required to have high-temperature hardness.

Further, in the present embodiment, the milling cutter has an imprint coating or a laser coating on the surface of the edge portion 110, and a coating is formed between the edge portion 110 and the workpiece, so that the cutting heat generated by friction during the contact between the cutter and the workpiece can be reduced, the service life of the cutter can be prolonged, and the generation of built-up edge can be reduced.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims

1. A milling cutter, characterized in that the milling cutter comprises:

a shank connected with the blade.

2. The milling cutter according to claim 1, wherein the first cutting edge further comprises a first base plate, a plurality of first cutting teeth are fixed on the side surface of the first base plate, the plurality of first cutting teeth are uniformly distributed, and the included angle formed by the two side edges of each first cutting tooth and the side edge of the first base plate is different; the second cutting edge further comprises a second base plate, the second cutter teeth are fixed to the side face of the second base plate and are evenly distributed, and each of two side edges of each second cutter tooth is different from an included angle formed by the side edge of the second base plate.

3. The milling cutter according to claim 2, wherein the first base disc is coaxially connected to the second base disc.

4. The milling cutter tool according to claim 3, wherein the first base plate is provided with a blind hole at the center thereof.

5. The milling cutter according to claim 1, wherein the first cutting edge has teeth in opposite directions to the teeth of the second cutting edge.

6. The milling cutter according to claim 2 wherein the shank comprises a shank which is straight.

7. The milling cutter according to claim 6, wherein the shank portion further comprises a stop in the form of a tapered circular truncated cone, the larger end of the stop being connected to the shank and the smaller end of the stop being connected to the second base plate.

8. Milling cutter tool according to claim 7, characterized in that the end of the shank remote from the stop and the larger end of the stop are provided with a chamfer.

9. The milling cutter according to claim 7, further comprising a connecting shaft connecting the first base plate, the second base plate, the stop and the shank in sequence.

10. The milling cutter tool according to claim 1, wherein the blade surface has an imprint coating or a laser coating.