TWM594508U - Dovetail cutter structure - Google Patents

Abstract

In particular, in the present invention, a first cutting edge portion and a second cutting edge portion are provided on the cutting head, the first cutting edge portion has a first cutting edge section, and a first cutting edge section connected to the first cutting edge section, The second blade section has a second blade section connected to the first blade section, and a second blade section connected to the second blade section, so that the friction area during cutting can be sufficiently reduced to prevent temperature overheating and penetration The first cutting edge section and the second cutting edge section are assisted to achieve the purpose of rapid cutting, and the first cutting edge section and the second cutting edge section are combined to form a first chip evacuation extending toward the shank Groove, a second chip grooving groove is formed between the second cutting edge segment and the first tool tip segment, which is opposite to the first chip grooving groove and extends toward the shank, so as to achieve smooth chip evacuation and effectively prolong its service life .

Description

Dovetail knife structure

The present invention is related to the structure of a dovetail cutter, especially a dovetail cutter structure that avoids the phenomenon that the cutting surface of the front end of the blade touches the workpiece at the same time and excessive temperature is generated, which can improve the smooth chip evacuation, reduce the surface cracking of the workpiece, and cut quickly.

When the blade end of a traditional flat-blade knife is in contact with a wood block for high-speed rotary cutting work, the blade blade contact surface of the flat-blade knife generates high temperature due to frictional contact with the outer surface of the wood block, which is prone to collapse and damage. At this time, it is easy to cause scratches on the processed surface of the product due to the blade contact surface, and increase the defective rate of product cutting.

In addition, if the sharpness of the cutting edge is reduced, the cutting residue will not be easily broken, resulting in a large increase in resistance to chip removal and unsmooth chip removal, which causes friction and high heat of the blade of the flat-headed knife and increases the wear of the flat-headed knife, causing The operation is more inconvenient, so it will also reduce its service life.

The purpose of the present invention is to provide a dovetail cutter structure, which is mainly capable of gradually contacting the outer surface of the workpiece during processing, which can disperse the friction temperature, improve the smooth chip discharge, reduce the surface cracking of the workpiece, and fast cutting.

The reason is that, in order to achieve the foregoing purpose, a dovetail knife structure provided according to the present invention includes:

A tool holder; having an axis and a cutter head, integrally formed on one end of the tool holder along the axis; characterized in that the cutter head is provided with a first blade portion, and a cutting edge is connected to the first blade portion A second blade section, the first blade section has a first blade section, and a first blade section connected to the first blade section, the second blade section has a second blade connected to the first blade section Segment, and a second cutting edge segment connected to the second cutting edge segment, a first chip removal groove extending toward the shank is formed between the first cutting edge segment and the first cutting edge segment, the second cutting edge segment A second chip grooving groove is formed between the second blade tip section and the first chip grooving groove, and extends toward the shank. The outer surface of the first blade edge portion and the outer surface of the second blade edge portion form a plurality Cutting segments.

Preferably, the first blade section has an inclined first blade surface, the first blade section has an inclined first blade surface, and the angle of the first blade surface is larger than the first blade angle Angle of the surface, the second blade section has an inclined second blade surface, the second blade section has an inclined second blade surface, and the angle of the second blade surface is larger than the second blade The angle at which the sharp face is inclined.

Preferably, the first blade surface and the second blade surface are inclined at the same angle, and the first blade surface and the second blade surface are inclined at the same angle.

Preferably, the first chip groove and the second chip groove have the same length and width.

Preferably, the tool handle is a cylindrical body with a uniform outer diameter.

In this way, in particular, the present invention will provide a first blade portion and a second blade portion on the blade head, the first blade portion having a first blade section and a first blade connected to the first blade section Tip section, the second blade section has a second blade section connected to the first blade section, and a second blade section connected to the second blade section, so that the friction area during cutting can be sufficiently reduced to prevent temperature Overheating, through the assistance of the first tool nose segment and the second tool nose segment, to achieve the purpose of rapid cutting, in addition, with the first tool edge segment and the second tool nose segment forming a A chip grooving groove, a second chip grooving groove formed opposite to the first chip grooving groove and extending toward the tool shank is formed between the second blade edge section and the first blade tip section, so as to achieve a smooth chip evacuation effect and effectively extend Its service life.

Please refer to FIG. 1 to FIG. 4. The dovetail knife structure provided in this creative embodiment is mainly composed of a shank 10 and a cutter head 20, among which:

The tool holder 10; has an axis 11; specifically, the tool holder 10 is a cylindrical body with a uniform outer diameter.

The cutter head 20 is integrally formed on one end of the cutter handle 10 along the axis 11.

Since the connection methods of the tool holder 10 and the tool head 20 are both conventional, and the operation method is the same as the conventional ones, and it is not the creative focus of this case, the detailed structure and assembly of the component (the tool holder 10) The method and action method will not be described in detail.

The cutter head 20 is provided with a first blade portion 21 and a second blade portion 22 which is axisymmetric and connected to the first blade portion 21 by a cutting edge 23, and the first blade portion 21 has a first blade section 211, and a first blade section 212 connected to the first blade section 211, the second blade section 22 has a second blade section 221 connected to the first blade section 211, and a second blade section 221 connected to the second blade section 211 A second cutting edge section 222 of the first cutting edge section 211 and the first cutting edge section 212 forms a first chip groove 24 extending toward the shank 10, the second cutting edge section 221 and the second A second chip grooving groove 25 is formed between the blade tip section 222 and extends toward the shank 10 relative to the first chip grooving groove 24. The length and width of the first chip grooving groove 24 and the second chip grooving groove 25 are All of them are the same. The outer surface of the first blade portion 21 and the outer surface of the second blade portion 22 form a plurality of cutting segments 26, and the distances of the plurality of cutting segments 26 are equal and extend in the direction of the tool shank 10. Among them, the first blade portion 21 and the second blade portion 22 process the wood block A at a fixed frequency during the machining of the workpiece from top to bottom, so that the surface of the wood block A is smoother and less prone to occur Cracking of the workpiece surface. In addition, through the assistance of the first cutting edge section 212 and the second cutting edge section 221, the effects of reducing friction and rapid cutting can be achieved, so that the creation can save more effort and speed when cutting, and improve the efficiency of work and other benefits At the same time, the chips generated by the cutting can also be designed through the first chip groove 24 and the second chip groove 25 to the shank 10 in an arc shape to achieve rapid chip evacuation and reduce the cracking of the wood block A, etc. effect.

It is worth mentioning that the first blade section 211 has an inclined first blade surface 2110, the first blade section 212 has an inclined first blade surface 2120, and the first blade surface 2110 is inclined The angle is greater than the angle at which the first blade surface 2120 is inclined. The second blade section 221 has an inclined second blade surface 2210. The second blade section 222 has an inclined second blade surface 2220. The inclined angle of the second blade surface 2210 is greater than the inclined angle of the second blade surface 2220; specifically, the first blade surface 2110 and the second blade surface 2210 are inclined at the same angle, and the first blade surface 2120 The inclined angle is the same as the second blade surface 2220, wherein the angle between the first blade surface 2120 and the first blade surface 2120 is about 8 degrees, the first blade surface 2110 and the second blade surface 2210 The angle of inclination is about 45 degrees. Through the above design, it can achieve rapid cutting and have the effect of heat dissipation, and help to save more energy and improve the work efficiency during cutting.

The above is the configuration description of the main components of the new embodiment. As for the efficacy of the new model, it is as follows:

First, prevent overheating during cutting and reduce the service life.

Second, during the cutting process, the function of smooth chip removal is improved.

Third, during the cutting process, rapid cutting can be achieved, which can save more effort and speed, and improve the efficiency of work.

Fourth, due to the gradual contact with the outer surface of the workpiece, it is not easy to crack, and the effect of improving the service life is achieved.

In summary, the above-mentioned embodiments and drawings are only preferred embodiments of the new model. When the scope of the implementation of the new model cannot be limited, all changes and modifications made in accordance with the patent application of the new model should belong to Within the scope of this new patent.

A: Wooden block 10: Tool holder 11: axis 20: cutter head 21: The first blade 211: The first blade segment 2110: First blade surface 212: The first tip section 2120: The first blade point surface 22: Second blade 221: Second blade segment 2210: Second blade surface 222: Second tip section 2220: Second blade tip surface 23: Cutting edge 24: First chip drainage ditch 25: Second chip drainage ditch 26: Cutting line segment

Figure 1 is a perspective view of an embodiment of the present invention; 2 is a top view of the new embodiment of the present invention; 3 is an enlarged perspective view of an embodiment of the present invention; and Fig. 4 is a usage state diagram of an embodiment of the present invention.

10: Tool holder

11: axis

20: cutter head

21: The first blade

211: The first blade segment

2110: First blade surface

212: The first tip section

2120: The first blade point surface

22: Second blade

222: Second tip section

24: First chip drainage ditch

26: Cutting line segment

Claims (5)

A dovetail knife structure, characterized in that it includes: A shank; with an axis, and A cutter head, which is integrally formed on one end of the cutter handle along the axis; The utility model is characterized in that the cutter head is provided with a first blade portion and a second blade portion with a cutting edge connected to the first blade portion, the first blade portion has a first blade section and a connection with the first blade The first blade section of the segment, the second blade section has a second blade section connected to the first blade section, and a second blade section connected to the second blade section, the first blade section and the first blade section A first chip removal groove extending toward the tool shank is formed between a blade tip section, and a second chip cutting section and the second tool tip section are formed to extend relative to the first chip removal groove and toward the tool shank In the second chip removal groove, the outer surface of the first blade portion and the outer surface of the second blade portion form a plurality of cutting line segments. The dovetail knife structure according to claim 1, wherein the first blade section has an inclined first blade surface, and the first blade section has an inclined first blade surface, the first The angle of inclination of the blade surface is greater than the angle of inclination of the first blade surface, the second blade section has an inclined second blade surface, the second blade section has an inclined second blade surface, the first The inclination angle of the second blade surface is greater than the inclination angle of the second blade surface. The dovetail knife structure according to claim 2, wherein the first blade surface and the second blade surface are inclined at the same angle, and the first blade surface and the second blade surface are inclined at the same angle . The dovetail knife structure according to claim 1, wherein the first chip groove and the second chip groove have the same length and width. The dovetail knife structure according to claim 1, wherein the tool handle is a cylindrical body with a uniform outer diameter.

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