Rotatable blade type milling cutter body

Abstract

The utility model discloses a rotatable blade type milling cutter body, which belongs to the technical field of milling cutters and comprises a cutter body, a milling cutter groove is arranged at the top of the cutter body, a blade is arranged in the milling cutter groove, bosses are respectively arranged on two sides of the milling cutter groove, and a screw penetrates through the back of the boss on one side of the milling cutter groove. The milling cutter grooves and the blades are arranged on the top of the cutter body in a surrounding mode, round pin sections are arranged in the middles of the multiple sets of screws, the round pin sections abut against the inner walls of the blades in a limiting mode respectively, and the round pin sections are in threaded connection with penetrating limiting holes in the bosses through the threaded sections of the screws. Meanwhile, the tail of the screw penetrates into the tail limiting hole to be in contact with the tail limiting hole for abutting, and the outer wall of the ball table section is in linear contact with the inner wall of the middle of the limiting ring, so that three-point positioning of the blade is achieved, and stability, safety and durability in the cutting process are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the milling cutter field, specifically, relate to a rotatable blade formula milling cutter body. BACKGROUND

[0002] In the traditional mechanical processing field, the milling cutter body as important cutting tool, its structure design and performance directly influence processing efficiency and processing quality.

[0003] The blade rotatable milling cutter body in prior art, including cutter body and blade, through screw fixed blade in the milling cutter groove of cutter body. However, this structure has the following problems: in the cutting process, the round pin section of screw bears larger cutting force and friction force, is influenced by cutting heat and friction heat simultaneously, leads to screw temperature rise, round pin section is easy to change, is easy to appear screw extrusion in cutter body cannot unscrew condition, forcibly disassembles can damage the screw thread of cutter body, reduces cutter body life. How to invent a rotatable blade formula milling cutter body to improve these problems, becomes the problem that the technical personnel in the field urgently need to solve. SUMMARY

[0004] In order to make up for the above insufficient, the utility model provides a rotatable blade formula milling cutter body, aims at improving the problem that the round pin section of screw bears larger cutting force and friction force and is easy to change and reduces cutter body life.

[0005] The utility model is realized as follows: a rotatable blade formula milling cutter body, including

[0006] Cutter body, the top of cutter body is provided with milling cutter groove, the inside of milling cutter groove is provided with blade, the both sides of milling cutter groove are provided with boss respectively, the boss back of one side of milling cutter groove is provided with screw through, the other end of screw is connected in the side wall of boss of the other side of milling cutter groove with screw thread, milling cutter groove and blade are provided with multiple groups around the top of cutter body, the middle of multiple screw is provided with round pin section, and the inner wall of round pin section is limited and abuts with blade respectively.

[0007] In a preferred technical scheme in the utility model, the middle of cutter body is cylindrical body, and the bottom of cutter body is provided with screw thread.

[0008] In a preferred technical scheme in the utility model, the both sides of cylindrical body of cutter body middle are provided with flat groove.

[0009] In a preferred technical scheme in the utility model, the top of cutter body is provided with multiple milling cutter grooves, and the boss is located at the both sides of milling cutter groove respectively, and the left end of boss of right side of each milling cutter groove is provided with chip groove.

[0010] In a preferred technical scheme of the utility model, the boss is arc-shaped, the blade is in the milling cutter groove, and the blade cutting surface is on one side of the chip pocket.

[0011] In a preferred technical scheme of the utility model, the boss is arc-shaped, the blade is in the milling cutter groove, and the blade cutting surface is on one side of the chip pocket.

[0012] In a preferred technical scheme of the utility model, the boss is arc-shaped, the blade is in the milling cutter groove, and the blade cutting surface is on one side of the chip pocket.

[0013] In a preferred technical scheme of the utility model, the boss is arc-shaped, the blade is in the milling cutter groove, and the blade cutting surface is on one side of the chip pocket.

[0014] In a preferred technical scheme of the utility model, the boss is arc-shaped, the blade is in the milling cutter groove, and the blade cutting surface is on one side of the chip pocket.

[0015] The utility model discloses a rotatable blade type milling cutter body, which has the following advantages. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without paying creative labor.

[0017] Fig. 1 is a top structure schematic view provided by the embodiment of the utility model;

[0018] Fig. 2 is a one side structure schematic view provided by the embodiment of the utility model;

[0019] Fig. 3 is a plan view structure schematic view provided by the embodiment of the utility model;

[0020] Fig. 4 is a screw structure schematic view provided by the embodiment of the utility model.

[0021] In the figure: 1, cutter body; 2, milling cutter groove; 3, penetrate limiting hole; 4, chip pocket; 5, tail limiting hole; 6, blade; 7, screw; 71, threaded section; 8, limiting ring; 9, round pin section; 10, boss; 11, ball table section. Specific embodiments

[0022] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be described clearly and completely below in combination with the drawings in the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0023] Please refer to Figs. 1 to 4 The utility model provides a kind of technical scheme: a rotatable blade milling cutter body, comprising

[0024] Cutter body 1, the top of cutter body 1 is provided with milling cutter groove 2, the inside of milling cutter groove 2 is provided with blade 6, the two sides of milling cutter groove 2 are provided with boss 10 respectively, the back of boss 10 on the side of milling cutter groove 2 is provided with screw 7, the other end of screw 7 is threadedly connected to the side wall of boss 10 on the other side of milling cutter groove 2, milling cutter groove 2 and blade 6 are provided with multiple groups around the top of cutter body 1, the middle of multiple screws 7 is provided with round pin section 9, and round pin section 9 is limited to abut with the inner wall of blade 6 respectively.

[0025] The middle part of the cutter body 1 is a cylinder, and the bottom part of the cutter body 1 is provided with a thread. Two sides of the middle part of the cutter body 1 are provided with flat grooves. The top part of the cutter body 1 is provided with a plurality of milling cutter grooves 2, and a boss 10 is arranged on both sides of each milling cutter groove 2. The left end of the boss 10 on the right side of each milling cutter groove 2 is provided with a chip groove 4. The boss 10 is provided in an arc shape, a blade 6 is arranged in the milling cutter groove 2, and the cutting surface of the blade 6 is arranged on one side of the chip groove 4. The boss 10 arranged in the chip groove 4 is provided with a penetrating limiting hole 3, the penetrating limiting hole 3 is coaxial with a tail limiting hole 5, the tail limiting hole 5 is arranged on the side wall of the boss 10 close to the chip groove 4, and the chip groove 4 is used to avoid the debris generated in the cutting process, so that the iron filings can be smoothly discharged.

[0026] The tail part of the screw 7 is a threaded segment 71, the middle part of the screw 7 is provided with a round pin segment 9, the threaded segment 71 is threadedly connected with the penetrating limiting hole 3, and the tail part of the screw 7 is arranged in the tail limiting hole 5. The round pin segment 9 is provided in a circular truncated cone shape, the inner wall of the blade 6 is provided with a limiting ring 8, the small end of the circular truncated cone is arranged in the limiting ring 8, and the limiting ring 8 is in abutment with the outer wall of the round pin segment 9. A spherical platform segment 11 is arranged between the round pin segment 9 and the tail part of the screw 7, the outer wall of the spherical platform segment 11 is in linear contact with the middle part of the inner wall of the limiting ring 8. The blade 6 is sleeved on the spherical platform segment 11 by means of the limiting ring 8, and is positioned by abutting one end of the limiting ring 8 against the round pin segment 9 and threadedly connecting the threaded segment 71. The spherical platform segment 11 is a spherical truncated cone with both ends cut off, and is used to reduce the friction between the spherical platform segment 11 and the limiting ring 8.

[0027] The existing two-point positioning mode is changed to a three-point positioning mode, so that both ends of the screw 7 can resist strong cutting resistance in the cutting process, the screw 7 will not be deformed, and the situation that the screw 7 is squeezed in the cutter body 1 and the service life of the cutter body 1 is shortened in the existing product is solved, the service life of the screw is also improved, one blade 6 does not need to be matched with one screw 7, the screw 7 can be used, and the cost of the screw 7 and the cutter body 1 is greatly reduced. Meanwhile, the surface contact mode of the round pin segment 9 and the limiting ring 8 in the existing product is changed to the linear contact mode of the spherical platform segment 11 and the limiting ring 8, the friction between the screw 7 and the limiting ring 8 is reduced, and the smoothness of the rotation of the blade 6 is improved.

[0028] Working principle: the blade 6 is arranged in the milling cutter groove 2, and the cutting surface of the blade 6 is arranged on one side of the chip groove 4. Then, the threaded segment 71 of the screw 7 is threadedly connected with the penetrating limiting hole 3 on the boss 10, the tail part of the screw 7 is deeply arranged in the tail limiting hole 5 and is in abutment with the tail limiting hole 5, and the outer wall of the spherical platform segment 11 is in linear contact with the middle part of the inner wall of the limiting ring 8 to realize three-point positioning of the blade 6. When the milling cutter body 1 rotates, the blade 6 rotates together, the cutting surface is in contact with the workpiece to cut. The cutting debris generated in the cutting process is smoothly discharged from the chip groove 4, and the cutting debris is avoided from being accumulated.

[0029] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotatable insert cutter body characterized by, The utility model relates to a milling cutter, including The utility model discloses a milling cutter, including a cutter body, the top of the cutter body is provided with milling cutter grooves, the inside of the milling cutter groove is provided with a blade, the both sides of the milling cutter groove are provided with bosses respectively, the boss back of one side of the milling cutter groove is provided with a screw, the other end of the screw is screwed on the side wall of the boss of the other side of the milling cutter groove, the milling cutter groove and the blade are provided with multiple groups around the top of the cutter body, the middle part of multiple groups of the screw is provided with a round pin section, and the round pin section is limited and abuts with the inner wall of the blade respectively. The top of the cutter body is provided with multiple milling cutter grooves, the bosses are located at the both sides of the milling cutter groove respectively, and the left end of the boss on the right side of each milling cutter groove is provided with a chip groove. The boss is provided with a penetrating limiting hole in the chip groove, the penetrating limiting hole is coaxial with the tail limiting hole, the tail limiting hole is arranged on the side wall of the boss close to the chip groove, the end of the screw is a threaded section, the middle part of the screw is provided with a round pin section, the threaded section is screwed with the penetrating limiting hole, and the tail of the screw is arranged in the tail limiting hole. The round pin section is provided in a circular truncated cone shape, the inner wall of the blade is provided with a limiting ring, the small end of the circular truncated cone extends into the limiting ring, the limiting ring abuts with the outer wall of the round pin section correspondingly, a spherical platform section is arranged between the round pin section and the tail of the screw, the outer wall of the spherical platform section is in line contact with the middle inner wall of the limiting ring.

2. A rotatable insert cutter body as claimed in claim 1, wherein: The middle part of the cutter body is a cylinder, and the bottom of the cutter body is provided with a thread.

3. A rotatable insert cutter body as claimed in claim 2, wherein: The both sides of the cylinder of the middle part of the cutter body are provided with flat grooves.

4. A rotatable insert cutter body as claimed in claim 1 wherein: The bosses are all provided in an arc shape, the blade is located in the milling cutter groove, and the cutting surface of the blade is located on one side of the chip groove.

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