CN2902543Y - Printed circuit board milling cutter - Google Patents
Printed circuit board milling cutter Download PDFInfo
- Publication number
- CN2902543Y CN2902543Y CN 200520044304 CN200520044304U CN2902543Y CN 2902543 Y CN2902543 Y CN 2902543Y CN 200520044304 CN200520044304 CN 200520044304 CN 200520044304 U CN200520044304 U CN 200520044304U CN 2902543 Y CN2902543 Y CN 2902543Y
- Authority
- CN
- China
- Prior art keywords
- milling cutter
- circuit board
- printed circuit
- blade
- spiral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a milling cutter, more particularly to a milling cutter of printing circuit board, comprising a cutter edge and a cutter handle which are welded together, wherein the cutter edge is provided with two spiral grooves, via a cutting groove and a chip removing groove. The utility model is characterized in that the cross section of the grooves show U-shape, the grooves are flat in the bottom, the cutting groove and the chip removing groove are positioned in reversed pin shape. The utility model has the advantages of simple structure, being not easy to broke, being fluent to remove chip, and long durability.
Description
Technical field
The utility model relates to a kind of milling cutter, especially a kind of printed circuit board (PCB) milling cutter.
Background technology
The blade of existing circuit board milling cutter all is to be made by the high-hardness tungsten carbide material, have on the blade usually to be spiral helicine groove, and " V " shape is adopted in the spiral fluted cross section, and the helicla flute bottom of trench is little circular shape.The characteristics of this kind structure are that groove is deep, thereby makes thick the reducing of core of blade.When being used for breaking phenomenon very easily occurring after the blade position wearing and tearing of clipper circuit plate and boring, and " V " font groove easily produces Integrated Chip, causes the cutter chip removal to be obstructed, and causes cutter to fracture.In addition, " V " shape structure is in process, and all strength all concentrates on the wedge wedge angle of " V " shape, so occurs the phenomenon that cutter fractures in the process easily.Above-mentioned several defective makes the lost of life of milling cutter.There is lack of raw materials for tungsten carbide in recent years, and the milling cutter cost of manufacture is surging, and traditional milling cutter manufacturing and shape and structure be value-for-money not obviously.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and long new-type circuit plate milling cutter of a kind of simple in structure, life-span is provided.
In order to realize above purpose, the utility model has adopted following technical scheme:
A kind of printed circuit board (PCB) milling cutter is welded to form by blade 2 and handle of a knife 1, and two spiral-shaped grooves are arranged on the described blade 2, is respectively chip area and cutting slot, it is characterized in that: the spiral-shaped trench cross section of described blade 2 is one shallow " U " shape structure.
The spiral-shaped channel bottom of described blade 2 is a planar structure.
The cutting slot of described blade 2 is arranged for the left-hand screw formula, and chip area is arranged for the right-hand screw formula.
The cutting slot of described blade 2 is arranged for the right-hand screw form, and chip area is arranged for the left-hand screw formula.
The utlity model has following advantage: (1) is because blade 2 has adopted the spiral-shaped groove of cross section for " U " shape structure, make the thick increase of core of circuit board milling cutter, thereby strengthened the intensity of milling cutter, in use be not prone to the cutter phenomenon that fractures, particularly the little circuit board milling cutter of counter blade footpath size; (2) " U " shape structure is better than " V " type structure on the mechanics angle, and in process, the strength of " U " shape groove is disperseed to both sides, efficiently solves stress in process and concentrates the cutter that the causes phenomenon that fractures; (3) provide the chip removal mode of a spaciousness, when milling cutter rotated, smear metal can smooth and easyly be discharged, and bottom of trench does not have the Integrated Chip phenomenon, thereby made milling cutter be difficult for producing wearing and tearing, the service life of having improved milling cutter.
Description of drawings
Fig. 1: be the structural representation of prior art " V " shape circuit board milling cutter helicla flute shape;
Fig. 2: be prior art " V " shape circuit board milling cutter partial enlarged drawing;
Fig. 3: be the structural representation of the utility model " spill is flat " circuit board milling cutter;
Fig. 4: be the partial enlarged drawing of the utility model " spill is flat " circuit board milling cutter;
Fig. 5: be the structural representation of the utility model " U " circuit board milling cutter;
Fig. 6: be the partial enlarged drawing of the utility model " U " circuit board milling cutter;
Fig. 7: be the structural representation of embodiment 3 of the present utility model;
Fig. 8: be the schematic diagram of the thick D1 of prior art Fig. 1 SMIS;
Fig. 9: be the schematic diagram of the thick D2 of the utility model Fig. 3 SMIS.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is specifically described:
As shown in Figures 1 and 2, be the structural representation of common circuit board milling cutter helicla flute shape, its structure and shortcoming thereof, as previously mentioned, repeated description no longer herein.
Embodiment 1:
As shown in Figures 3 and 4, a kind of printed circuit board (PCB) milling cutter is welded into an overall structure by blade 2 and handle of a knife 1.Described blade 2 is made by carbide alloy, and the groove of blade 2 is spiral-shaped, and two kinds of cutting slot and chip areas are arranged.Trench cross-section is one shallow " U " shape structure, and the bottom is the plane.When described cutting slot was arranged with the left-hand screw form, chip area was arranged with the right-hand screw form.
Because blade 2 has adopted the spiral-shaped groove of shallow " U " shape, the thick D2 of core of circuit board milling cutter is increased,, in use be not prone to breaking referring to Fig. 8 and shown in Figure 9, the little circuit board milling cutter of counter blade footpath size particularly, its breaking rate can obviously reduce especially.Add man-hour when milling cutter rotates, smear metal can smooth and easyly be discharged, and the bottom of trench of shallow " U " shape helicla flute bottom can not produce Integrated Chip, makes milling cutter be difficult for producing wearing and tearing, the service life of raising milling cutter; The length of a milling cutter milling rises appreciably, and number of changing knife reduces, and has improved production efficiency.
Embodiment 2:
As Fig. 5 and shown in Figure 6, when the main difference of present embodiment and embodiment 1 was that the cutting slot of blade 2 is arranged with the right-hand screw form, chip area was arranged with the left-hand screw form.
Embodiment 3:
As shown in Figure 7, a kind of printed circuit board (PCB) milling cutter comprises blade 2 and handle of a knife 1, and described blade 2 is to be made by carbide alloy, comprises one in order to cut the cutting portion 21 and the joint portion 22 away from cutting portion of boring circuit board, and the groove of cutting portion 21 is spiral-shaped.Handle of a knife 1 then utilizes other metal materials to constitute, handle of a knife 1 be axially arranged with jack 11, insert in the jack 11 joint portion 22 of blade 2, the hole wall of jack 11 is provided with from radially extending and being in communication with the outside for scolder and fills out the groove of filling, the joint portion 22 of blade 2 is welded in the jack 11, and handle of a knife 1 and blade 2 is affixed.The spiral-shaped trench cross-section of described cutting portion 21 is one shallow " U " shape structure, and the bottom is a plane.
Because the blade 2 of milling cutter adopts Hardmetal materials to make, as tungsten carbide.And handle of a knife 1 adopts other ordinary metallic materials to make, and can reduce the cost of manufacture of milling cutter, and the above-mentioned advantage of the spiral-shaped groove of shallow " U " shape can be arranged again.
Claims (4)
1. printed circuit board (PCB) milling cutter, be welded to form by blade (2) and handle of a knife (1), two spiral-shaped grooves are arranged on the described blade (2), be respectively chip area and cutting slot, it is characterized in that: the spiral-shaped trench cross section of described blade (2) is one shallow " U " shape structure.
2. a kind of printed circuit board (PCB) milling cutter according to claim 1 is characterized in that: the spiral-shaped channel bottom of described blade (2) is a planar structure.
3. a kind of printed circuit board (PCB) milling cutter according to claim 1 and 2 is characterized in that: the cutting slot of described blade (2) is arranged for the left-hand screw formula, and chip area is arranged for the right-hand screw formula.
4. a kind of printed circuit board (PCB) milling cutter according to claim 1 and 2 is characterized in that: the cutting slot of described blade (2) is arranged for the right-hand screw form, and chip area is arranged for the left-hand screw formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520044304 CN2902543Y (en) | 2005-08-16 | 2005-08-16 | Printed circuit board milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520044304 CN2902543Y (en) | 2005-08-16 | 2005-08-16 | Printed circuit board milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2902543Y true CN2902543Y (en) | 2007-05-23 |
Family
ID=38077946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520044304 Expired - Fee Related CN2902543Y (en) | 2005-08-16 | 2005-08-16 | Printed circuit board milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2902543Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101683698B (en) * | 2009-08-18 | 2012-06-13 | 深圳市金洲精工科技股份有限公司 | Milling cutter for forming circuit board and processing method thereof |
| CN103624307A (en) * | 2013-12-04 | 2014-03-12 | 江苏宏博机械制造有限公司 | Flat-end milling cutter |
-
2005
- 2005-08-16 CN CN 200520044304 patent/CN2902543Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101683698B (en) * | 2009-08-18 | 2012-06-13 | 深圳市金洲精工科技股份有限公司 | Milling cutter for forming circuit board and processing method thereof |
| CN103624307A (en) * | 2013-12-04 | 2014-03-12 | 江苏宏博机械制造有限公司 | Flat-end milling cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |