CN211680199U

CN211680199U - Composite board special knife

Info

Publication number: CN211680199U
Application number: CN202020297801.XU
Authority: CN
Inventors: 廖文生; 曹连花
Original assignee: Jiangxi Saiyu Precision Machinery Co ltd
Current assignee: Jiangxi Saiyu Precision Machinery Co ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-10-16
Anticipated expiration: 2030-03-12

Abstract

The utility model discloses a special sword of composite sheet, cutting portion on tool bit and tool bit, cutting portion includes the cutting edge portion and is located the end sword of blade portion bottom, blade portion includes cutting edge and cutting groove, and the cutting groove is the helicla flute that forms along blade portion circumference, its characterized in that: the cutting edge part sequentially comprises a right-handed part and a left-handed part from bottom to top by taking the bottom edge as a starting point, and the spiral grooves of the right-handed part and the left-handed part are sequentially right-handed grooves and left-handed grooves formed by cutting grooves along the circumferential direction of the cutting edge part. Because the cutting edge direction and the chip removal direction of dextrorotation portion and levogyration portion are opposite, the production of avoiding the burr that on the one hand can be better guarantees the smoothness of milling face, and on the other hand makes the protective film that is located on panel laminate in panel surface more, can not float.

Description

Composite board special knife

Technical Field

The utility model relates to a processing cutter technical field, more specifically the utility model relates to a special sword of composite sheet that says so.

Background

The front and back surfaces of the wood board, the plastic board and the acrylic board are coated with the household protecting film, and when the wood board, the plastic board and the acrylic board are milled, burrs and unsmooth parts of the milled parts of the boards are easy to occur, and the poor attaching degree and the easy floating phenomenon of the film and the boards are caused. When a special cutter is needed to process the plates, smooth and burr-free milling parts are ensured on one hand, and the laminating degree of the film and the plates is ensured on the other hand.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model aims to overcome among the prior art wooden board, plastic board and acrylic board add man-hour, mill the position and have the burr, the easy obscission that floats of film provides a special sword of composite sheet, in the course of working, guarantees that the processing position is smooth, no burr, and the film does not float.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does: the utility model provides a special sword of composite sheet, includes the cutting portion on tool bit and the tool bit, the cutting portion includes cutting edge portion and the end sword that is located blade portion bottom, blade portion includes cutting edge and cutting groove, and the cutting groove is along the helicla flute that blade portion circumference formed to the end sword is the starting point, and blade portion includes dextrorotation portion and levogyration portion from bottom to top in proper order, and the helicla flute of dextrorotation portion and levogyration portion is right-handed groove and levogyration groove that the cutting groove formed along blade portion circumference in proper order.

As a further improvement of the utility model, the length H of the cutting edge part is 25mm-25.5mm, and the length H of the right rotating part on the cutting edge part is 6.0mm-6.5 mm.

As a further improvement of the utility model, the coincidence value of the right-handed groove and the left-handed groove is 0.2mm-0.6mm, and the helical angles of the right-handed groove and the left-handed groove are both 30 degrees.

As a further improvement of the utility model, the first relief angle a of the cutting edge part is 9-11 degrees, and the second relief angle is 20-24 degrees.

As a further improvement of the utility model, the tool bit is made of tungsten steel.

As a further improvement, the detachable tail of the tool bit is connected with a tool shank with adjustable length.

As a further improvement of the utility model, the protruding briquetting that is equipped with of tool bit circumference is equipped with the tool bit holding chamber that holds the tool bit on the handle of a knife, tool bit holding intracavity wall is equipped with the briquetting holding chamber that is used for holding briquetting, tool bit holding chamber outer wall is equipped with the passageway is moved in the top that is used for pushing up briquetting, briquetting holding chamber moves the passageway intercommunication with the top.

As a further improvement of the utility model, the outlet section of the jacking channel is smaller than the section of the elastic pressing block.

As a further improvement, the circumference of the tool bit is provided with two symmetrically distributed elastic press blocks, and the circumference of the tool bit holding cavity corresponds to the press block holding cavity provided with two symmetrically distributed press blocks.

As a further improvement, the knife handle is mainly formed by a plurality of sub-knife handles which are connected in turn through screw threads.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

the utility model discloses a special sword of composite sheet, be provided with dextrorotation portion and levogyration portion on the sword oral area of cutter simultaneously, make the cutter to by timber, plastics and ya keli etc. constitute panel when milling process, the cutting edge in dextrorotation portion and the levogyration portion can participate in simultaneously milling, because the cutting edge direction and the chip removal opposite direction of dextrorotation portion and levogyration portion, the production of avoiding the burr that can be better on the one hand, guarantee the smoothness of milling face, on the other hand makes the protection film that is located on panel laminate more in the panel surface, can not float.

Drawings

Fig. 1 is a schematic structural view of a knife special for composite boards provided by the present invention;

FIG. 2 is a view taken along line K of FIG. 1;

FIG. 3 is a schematic view of C-C (end edge) of FIG. 2;

FIG. 4 is a schematic view of the connection of the tool tip and the tool shank

The reference numerals in the schematic drawings illustrate:

1. a cutter head; 10. elastic pressing blocks; 20. a bottom edge; 21. a blade portion; 210. a right-hand portion; 211. a left-handed portion; H. a length of the blade portion; h. length of the right-hand portion; a. a first relief angle; b. a second relief angle; 3. a first sub-cutter handle; 30. a pressure block accommodating cavity; 31. jacking the channel; 32. a cutter head accommodating cavity; 4. and a second sub-cutter handle.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1-3, a composite board special-purpose knife includes a knife head 1, a cutting portion is provided on the knife head, the knife head 1 and the cutting portion 2 are integrally formed, the cutting portion includes a cutting edge portion 21 and a bottom edge 20 located at the bottom of the cutting edge portion, the cutting edge portion 21 includes a cutting edge and a cutting groove, and the cutting groove is a spiral groove formed along the circumference of the cutting edge portion 21. Use the end sword 20 as the starting point, the portion 21 of lip from bottom to top includes dextrorotation portion 210 and levogyration portion 211 in proper order, the helicla flute of dextrorotation portion 210 and levogyration portion 211 is right-handed groove and levogyration groove that the cutting flute formed along 21 circumferences of portion of lip in proper order, be provided with dextrorotation portion 210 and levogyration portion 211 on the portion 21 of lip of cutter simultaneously, make the cutter when milling process to the panel that comprises timber, plastics and ya keli etc. the cutting edge on dextrorotation portion 210 and the levogyration portion 211 can participate in milling simultaneously, because the cutting edge direction and the chip removal opposite direction of dextrorotation portion 210 and levogyration portion 211, the production of avoiding the burr that on the one hand can be better, guarantee the smoothness of milling face, on the other hand makes the protection film that is located on the panel laminate in the panel surface more, can not float.

As a preferred embodiment of the present invention, it may also have the following additional technical features.

In this embodiment, the length H of the cutting edge is 25mm to 25.5mm, wherein the length H of the right-handed portion on the cutting edge 21 is 6.0mm to 6.5mm, and the length of the left-handed portion 211 is the difference between the two lengths, and the thickness of the plate that can be processed is between the length H of the right-handed portion and the length H of the cutting edge, allowing for a proper tolerance. At present, the thickness of the plate processed and used by the inventor is basically between 6mm and 25mm, so the length H of the cutting edge part and the length H of the right-handed part are specified in the specific range so as to better meet the current processing requirement.

In this embodiment, the coincidence value of the right-handed groove and the left-handed groove is 0.2mm-0.6mm, because the material of processing is timber, plastics or ya keli, the coincidence value of the right-handed groove and the left-handed groove should be set up rationally, can not influence the chip removal, also can not appear empty sword phenomenon, it is a reasonable scope to obtain 0.2mm-0.6mm according to processing material and experiment, guarantee the chip removal effect of the coincidence position of the right-handed groove and the left-handed groove on the one hand, on the other hand both can be fine transition at the coincidence position, can not appear empty sword phenomenon. In the embodiment, the helical angles of the right-handed flute and the left-handed flute are both 30 degrees, which is determined according to the specific material to be processed, in practical application, the cutter not only can process wood, plastic and acrylic sheet materials, but also can process certain metal sheet materials, such as aluminum sheets and the like, and the helical angles of the corresponding right-handed flute and the left-handed flute are adjusted to 35-40 degrees, which is not limited to the above.

In this embodiment, the first clearance angle a of the cutting edge portion 21 is 9 ° to 11 °, the second clearance angle b of the cutting edge portion 21 is 20 ° to 24 °, the setting of the tool clearance angle directly affects the quality of the machined surface, the tool durability and the productivity, the clearance angle has the function of reducing the friction between the tool flank and the machined surface in the cutting process, and the clearance angle cannot be too large or too small. Set up the relief angle into above-mentioned within range, be according to the material characteristic of processing and through experimental derivation, its can be better avoid the machined part, improve workpiece surface quality, the saw-dust of discharging can be assisted to a plurality of relief angles, reduces cutter wearing and tearing, guarantees that the timber surface that is milled is smooth, no barb.

In the embodiment, the tool bit 1 is made of tungsten steel, the tungsten steel is high in hardness, good in wear resistance, strength and toughness, and excellent in heat resistance and corrosion resistance, and the manufactured tool has the advantages of being high in hardness, strength and wear resistance and the like.

As shown in fig. 4, in this embodiment, the tail portion of the tool bit 1 is detachably connected with the tool shank with adjustable length, the tool bit 1 is detachably connected with the tool shank, the application is flexible, the operation is convenient, the tool shank exists as a connecting piece, the length is set to be adjustable, and the application range is increased.

In this embodiment, protruding elastic pressing block 10 that is equipped with of tool bit 1 circumference, elastic pressing block 10 is through inlaying on the spring coupling in the outer wall of tool bit 1 periphery in tool bit 1, elastic pressing block 10 atress can indent in the outer wall of tool bit 1, the handle of a knife end of being connected with tool bit 1 is equipped with the tool bit holding chamber 32 that is used for holding tool bit 1, this tool bit holding chamber 32 inner wall is equipped with the briquetting holding chamber 30 that is used for holding elastic pressing block 10, this tool bit holding chamber 32 outer wall is equipped with the passageway 31 that moves in the top that is used for pushing up elastic pressing block 10, briquetting holding chamber 30 and the passageway 31 intercommunication. Elastic pressing block 10 is the wedge, and the inclined plane is just to handle of a knife tip, and when handle of a knife and tool bit 1 cooperated, tool bit 1 inserted and locates in the tool bit holding chamber 32 of handle of a knife, and the handle of a knife end pushes elastic pressing block 10's inclined plane, makes it indent in tool bit 1 periphery wall, and when briquetting holding chamber 30 arrived elastic pressing block 10 position, elastic pressing block 10 was launched in briquetting holding chamber 30 by the spring action, realizes the location of tool bit 1 and handle of a knife. When the positioning relation between the elastic pressing block and the handle needs to be released, the elastic pressing block 10 is pushed against the handle, and then the handle is quickly retracted.

The detachable connection mode has the advantages of simple structure, convenient disassembly and low manufacturing cost. The detachable connection may also be a threaded connection, a riveted connection, a pinned connection, etc., and is not limited herein.

In this embodiment, the outlet section of the pushing channel 31 is smaller than the section of the elastic pressing block 10, in order to fix the elastic pressing block 10 in the pressing block accommodating cavity 30, the outlet section of the pushing channel 31 needs to be smaller than the section of the elastic pressing block 10 in contact with the outlet section, so that one side of the connecting part of the elastic pressing block 10 and the pushing channel 31 always abuts against the inner wall of the pressing block accommodating cavity 30, the stability of the elastic pressing block 10 can be well maintained, and the positioning accuracy of the tool bit 1 and the tool shank is improved.

The number that elastic pressing blocks and the corresponding pressing block accommodating cavities need to be arranged is reasonably selected according to actual conditions, preferably, in the embodiment, the circumferential direction of the cutter head is provided with two elastic pressing blocks which are symmetrically distributed, and the circumferential direction of the cutter head accommodating cavities corresponds to be provided with two pressing block accommodating cavities which are symmetrically distributed.

The knife handle is mainly formed by connecting and combining a plurality of sub knife handles in sequence through threads. In this embodiment, the handle of a knife definition of being connected with tool bit 1 is first minute handle of a knife 3, the handle of a knife of being connected with first minute handle of a knife 3 is first minute handle of a knife 4 in proper order, third minute handle of a knife etc., 3 rethread threaded connection second minute handle of a knife 4 of first minute handle of a knife, second minute handle of a knife 4 is through threaded connection third minute handle of a knife etc., threaded connection is common connection structure, connect reliably, high durability and convenient operation, length-adjustable mechanism is including adopting threaded connection to carry out the part adjusted, adopt the telescopic link to carry out the part adjusted, adopt the inside and outside sleeve to carry out the mechanism of adjusting etc., and.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a special sword of composite sheet, includes cutting portion on tool bit (1) and the tool bit (1), cutting portion includes cutting edge portion (21) and bottom edge (20) that are located the cutting edge portion bottom, cutting edge portion (21) include cutting edge and cutting flutes, and the cutting flutes is the helicla flute that forms along cutting edge portion (21) circumference, its characterized in that: the cutting edge part (21) sequentially comprises a right-handed part (210) and a left-handed part (211) from bottom to top by taking the bottom cutting edge (20) as a starting point, and the spiral grooves of the right-handed part (210) and the left-handed part (211) are sequentially a right-handed groove and a left-handed groove formed by cutting grooves along the circumferential direction of the cutting edge part (21).

2. The composite board special knife according to claim 1, characterized in that: the length H of the cutting edge part is 25mm-25.5mm, and the length H of the right-handed part on the cutting edge part (21) is 6.0mm-6.5 mm.

3. The composite board special knife according to claim 1, characterized in that: the coincidence value of the right-handed groove and the left-handed groove is 0.2mm-0.6mm, and the helical angles of the right-handed groove and the left-handed groove are both 30 degrees.

4. The composite board special knife according to claim 1, characterized in that: the first relief angle a of the cutting edge part (21) is 9-11 degrees, and the second relief angle (b) is 20-24 degrees.

5. The composite board special knife according to claim 1, characterized in that: the tool bit (1) is made of tungsten steel.

6. The composite board special knife according to claim 1, characterized in that: the tail of the tool bit (1) is detachably connected with a tool shank with adjustable length.

7. The composite board special knife according to claim 6, characterized in that: the tool bit (1) is provided with an elastic pressing block (10) in a circumferential protruding mode, a tool bit accommodating cavity (32) for accommodating the tool bit (1) is formed in the tool shank, a pressing block accommodating cavity (30) for accommodating the elastic pressing block (10) is formed in the inner wall of the tool bit accommodating cavity (32), a jacking channel (31) for jacking the elastic pressing block (10) is formed in the outer wall of the tool bit accommodating cavity (32), and the pressing block accommodating cavity (30) is communicated with the jacking channel (31).

8. The composite board special knife according to claim 7, characterized in that: the outlet section of the jacking channel (31) is smaller than the section of the elastic pressing block (10).

9. The composite board special knife according to claim 7, characterized in that: the circumference of tool bit (1) is equipped with two symmetric distribution's elasticity briquetting (10), the circumference correspondence of tool bit holding chamber (32) is equipped with two symmetric distribution's briquetting holding chamber (30).

10. A composite board special knife according to any one of claims 6-9, characterized in that: the knife handle is mainly formed by connecting and combining a plurality of sub knife handles in sequence through threads.