CN217617985U

CN217617985U - Special milling cutter of plastic of twolip height tooth structure

Info

Publication number: CN217617985U
Application number: CN202221424403.5U
Authority: CN
Inventors: 顾大齐
Original assignee: Dongguan Longside Hardware Tool Co ltd
Current assignee: Dongguan Longside Hardware Tool Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-10-21
Anticipated expiration: 2032-06-08

Abstract

A special milling cutter of plastic of twolip height tooth structure includes: handle of a knife and cutter arbor, the handle of a knife forms fixedly with the cutter arbor, and the side surface of cutter arbor has the first cutting edge that is helical structure and the second cutting edge that is helical structure, its characterized in that: the tooth height of the first blade is larger than that of the second blade at the same position in the front-rear direction. The milling cutter can achieve the effects of milling and synchronously removing burrs, so that the surface smoothness of a plastic product is improved, the processing efficiency is improved, the surface of the product can be prevented from being damaged during deburring, and the product quality is ensured.

Description

Special milling cutter of plastic of twolip height tooth structure

Technical Field

The utility model relates to a milling cutter especially relates to a special milling cutter of plastic of twolip height tooth structure.

Background

A milling cutter is a rotating tool for milling machining having one or more cutter teeth. In the process of producing some plastic products, a milling cutter is also needed to be used for milling, burrs are generated on the surface of the plastic products after milling is finished, and a deburring procedure is added to ensure the smoothness of the plastic products. However, the production efficiency of the plastic product is greatly reduced by adding a deburring process.

The utility model discloses a chinese utility model CN208408666U discloses a compound milling cutter, has integrateed left-handed knife edge and right-handed knife edge on this compound milling cutter, adds man-hour when left-handed knife edge, and right-handed knife edge deburring simultaneously adds man-hour, and left-handed knife edge deburring to effectively deburring improves product quality, improves production efficiency in the course of working.

However, the tooth heights of the two edges of the composite milling cutter are equal, when the burr is removed, the edges contact with the burr to generate extrusion force on the surface of the product, and for metal products, the hardness is high, and the extrusion force has little influence, but for plastic products, the extrusion force may cause fine dents on the surface of the product.

In addition, the left-handed cutting edge and the right-handed cutting edge of the composite milling cutter are arranged on the same milling reamer, the milling reamer can perform milling and deburring operations at the same time, the bearing pressure is high, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The utility model discloses technical scheme is to above-mentioned condition, provides a special milling cutter of plastic of twolip height tooth structure for solving above-mentioned problem, milling cutter includes: the side surface of the cutter bar is provided with a first cutting edge in a spiral structure and a second cutting edge in a spiral structure, and the tooth height of the first cutting edge is larger than that of the second cutting edge at the same position in the front-back direction.

Further, the tooth height of the first cutting edge is 0.03 to 0.05mm larger than that of the second cutting edge at the same position in the front-back direction.

Further, the peripheral edge of the first blade and the peripheral edge of the second blade are both arc-shaped.

Further, the peripheral edge relief angle of the first blade and the peripheral edge relief angle of the second blade are both 13 to 17 °.

Further, the cutter arbor still has the chip groove, the chip groove is located between first cutting edge and the second cutting edge.

Further, the chip grooves extend to the tool shank.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

1. the milling cutter can achieve the effects of milling and synchronously removing burrs, so that the surface smoothness of a plastic product is improved, and the processing efficiency is improved.

2. Because the tooth height of first cutting edge is greater than the tooth height of second cutting edge, consequently in the course of working, the second cutting edge is direct not take place the contact with the product surface, so the second cutting edge can directly not produce the extrusion force to the product, can avoid damaging the product surface when the burring, ensures product quality.

3. Because the first cutting edge and the second cutting edge are separated from each other, the cutting edge can bear pressure in the machining process, and the service life is relatively long.

Drawings

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

fig. 2 is a side view of a milling cutter according to the present invention;

fig. 3 is a front view of the milling cutter according to the present invention.

Detailed Description

It is specifically noted that, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise; the meaning of "several" is at least one. In the embodiment of the present invention, all the directional indicators (such as upper, lower, left, right, front, rear \8230;) are used only to explain the relative positional relationship between the components in a specific posture, the motion situation, etc., and if the specific posture is changed, the directional indicator is changed accordingly.

The technical solution of the present invention is further described below by way of examples:

the utility model provides a special milling cutter of plastic of twolip height tooth structure, it is shown with 2 to combine figure 1, and this milling cutter includes: the cutter comprises a cutter handle 1 and a cutter rod 2, wherein the cutter handle 1 and the cutter rod 2 are fixedly arranged, the side surface of the cutter rod 2 is provided with a first cutting edge 21 in a spiral structure and a second cutting edge 22 in a spiral structure, and the tooth height H of the first cutting edge 21 is the same as that of the first cutting edge 22 in the front-back direction ₁ Greater than the tooth height H of the second blade 22 ₂ 。

The tooth height is a height projecting from the side surface of the holder 2. When the milling cutter is used, the first cutting edge 21 mills the plastic product, and the second cutting edge 22 is in contact with the bounced burrs on the surface of the plastic product, so that the burrs on the surface of the plastic product are scraped, the effects of milling and synchronously removing the burrs are achieved, the surface smoothness of the plastic product is improved, and the processing efficiency is improved.

Due to the tooth height H of the first blade 21 ₁ Greater than the tooth height H of the second cutting edge 22 ₂ Therefore, in the machining process, the second cutting edge 22 is not directly contacted with the surface of the product, so that the second cutting edge 22 cannot directly generate extrusion force on the product, the surface of the product can be prevented from being damaged during deburring, and the quality of the product is ensured.

Since the first cutting edge 21 and the second cutting edge 22 are separated from each other, they can be subjected to respective pressures during the machining process, and the service life is relatively long.

Specifically, the tooth height H of the first blade 21 at the same position in the front-rear direction ₁ Tooth height H of the second blade 22 ₂ 0.03 to 0.05mm in size.

Specifically, as shown in fig. 3, the peripheral edge 210 of the first blade 21 and the peripheral edge 220 of the second blade 22 are both circular arc-shaped. The circular arc-shaped peripheral edge can improve the strength of the blade, so that the blade is more wear-resistant, the blade is not easy to bounce, and the stability is better.

More specifically, the peripheral edge relief angle θ of the first blade 21 ₁ And the peripheral edge relief angle theta of the second blade 22 ₂ All are 13 to 17 degrees. In the present embodiment, the peripheral edge clearance angle θ of the first blade 21 ₁ And the peripheral edge relief angle theta of the second blade 22 ₂ Are all 15. The peripheral edge relief angle refers to an included angle between a tangent of a midpoint of the peripheral edge and the cutting plane.

In particular, with continued reference to fig. 1, the tool holder 2 further has a chip groove 23, the chip groove 23 being located between the first cutting edge 21 and the second cutting edge 22. The chip groove 23 is provided to discharge chips generated during cutting and scraped burrs.

More specifically, the flutes 23 extend to the shank 1. Extending the length of the flutes 23 allows for more efficient evacuation of debris.

The above-mentioned embodiments are merely preferred examples of the present invention, but not limiting the scope of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.

Claims

1. A special milling cutter of plastic of twolip height tooth structure, the milling cutter includes: handle of a knife and cutter arbor, the handle of a knife forms fixedly with the cutter arbor, the side surface of cutter arbor has the first cutting edge that is helical structure and the second cutting edge that is helical structure, its characterized in that: the tooth height of the first blade is larger than that of the second blade at the same position in the front-rear direction.

2. The special milling cutter for plastic cement of double-edged high-low tooth structure as claimed in claim 1, wherein: the tooth height of the first cutting edge is 0.03 to 0.05mm larger than that of the second cutting edge at the same position in the front-back direction.

3. The special milling cutter for plastic cement with a double-edged high-low tooth structure as claimed in claim 1, wherein: the peripheral edge of the first blade and the peripheral edge of the second blade are both arc-shaped.

4. The special milling cutter for plastic cement with a double-edged high-low tooth structure as claimed in claim 3, wherein: the peripheral edge relief angle of the first cutting edge and the peripheral edge relief angle of the second cutting edge are 13-17 degrees.

5. The special milling cutter for plastic cement with a double-edged high-low tooth structure as claimed in claim 1, wherein: the cutter arbor still has the chip groove, the chip groove is located between first cutting edge and the second cutting edge.

6. The special milling cutter for plastic cement with double-edged high-low tooth structure as claimed in claim 5, wherein: the chip groove extends to the handle.