CN209110249U - Hard alloy forms gouge bit - Google Patents
Hard alloy forms gouge bit Download PDFInfo
- Publication number
- CN209110249U CN209110249U CN201821698177.3U CN201821698177U CN209110249U CN 209110249 U CN209110249 U CN 209110249U CN 201821698177 U CN201821698177 U CN 201821698177U CN 209110249 U CN209110249 U CN 209110249U
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- CN
- China
- Prior art keywords
- circular arc
- cutter
- radius
- hard alloy
- cutting
- 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
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 22
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 22
- 238000000465 moulding Methods 0.000 abstract description 11
- 238000000227 grinding Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
Landscapes
- Drilling Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model provides a kind of hard alloy molding gouge bit, including apex point portion, cutting portion and shank section, apex point portion is connect with cutting portion, cutting portion is connect with shank section, apex point portion and cutting portion are equipped with the cutter groove with arcuate structure axially outside, form cutting edge between adjacent two cutter groove, arcuate structure includes the first circular arc and the second circular arc for connecting with the first circular arc, and the radius of the first circular arc and the radius of the second circular arc are unequal.Compared with the cutter groove of existing cutter only has the circular arc of one of radius, for the hard alloy molding gouge bit of the utility model while guaranteeing the chip space of cutter, the core for increasing cutter by wherein another circular arc is thick, to enhance tool strength and cutting force；Alternatively, the core for reducing cutter by wherein another circular arc is thick, to increase chip space while guaranteeing tool strength and cutting force；So that cutter can carry out the processing of big surplus, high feeding, and guarantee that cutter is not easily broken.
Description
Technical field
The utility model relates to field of drill more particularly to a kind of hard alloy to form gouge bit.
Background technique
Drill bit is the rotary cutting by its relatively fixed axis with the tool of the circular hole of drilling workpiece.Existing drill bit
Cutter groove be all formed with the only wheel grinding of a radius specification, i other words, the arcuate structure of the cutter groove of existing drill bit
Only a kind of circular arc of radius, has the following problems: when increasing the core thickness of cutter cutter groove, can enhance tool strength, but cutter
Chip space can then reduce, cutter using when will cause chip removal and have some setbacks, lead to cutter breaking；Conversely, reducing cutter groove
When core thickness, it is possible to increase chip space, but tool strength can reduce, cutter using when not enough can cause to break due to tool strength
Knife.
Utility model content
The purpose of this utility model is to provide one kind can both enhance tool strength and cutting force, ensures that the row of cutter
The hard alloy for considering space to be worth doing forms gouge bit.
To achieve the above object, the utility model provides a kind of hard alloy molding gouge bit, including apex point portion, cutting
Portion and shank section, the apex point portion are connect with the cutting portion, and the cutting portion is connect with the shank section, the apex point portion and
The cutting portion is equipped with the cutter groove with arcuate structure axially outside, forms cutting edge between adjacent two cutter groove, institute
State the second circular arc that arcuate structure includes the first circular arc and connects with first circular arc, the radius of first circular arc with it is described
The radius of second circular arc is unequal, and the radius ratio of first circular arc and second circular arc is 9:16.
Preferably, the cutter groove helically is set around the outside in the apex point portion and the cutting portion.
Preferably, the hand of spiral of the cutter groove is right-hand screw.
Preferably, the helical angle size of the cutter groove is in the range of 18 ° -30 °.
Preferably, the radius of first circular arc is 0.9 millimeter, the radius of second circular arc is 1.6 millimeters.
Preferably, the end apex angle size in the apex point portion is in the range of 128 ° -138 °.
Preferably, the core thickness of the cutting portion and arc it is the ratio between wide be 1:1.95.
Compared with prior art, the cutter groove of the hard alloy molding gouge bit of the utility model has an arcuate structure, should
Arcuate structure includes the first circular arc and the second circular arc for connecting with first circular arc, and the radius of the first circular arc and the second circular arc
Radius it is unequal, compared with the cutter groove of existing cutter only has the circular arc of one of radius, the hard of the utility model is closed
For gold molding gouge bit while guaranteeing the chip space of cutter, the core for increasing cutter by wherein another circular arc is thick, thus
Enhance tool strength and cutting force；Alternatively, being reduced while guaranteeing tool strength and cutting force by wherein another circular arc
The core of cutter is thick, to increase chip space；By above two situation so that cutter can carry out big surplus, high feeding plus
Work to meet customer requirement, and guarantees that cutter is not easily broken.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the hard alloy molding gouge bit of the utility model.
Fig. 2 is the cross-sectional view in Fig. 1 at A-A.
Specific embodiment
In order to which the technology contents, construction feature of the utility model is described in detail, below in conjunction with embodiment and cooperate attached drawing
It is described further.
Please refer to Fig. 1 and Fig. 2, the hard alloy molding gouge bit 100 of the utility model include apex point portion 1, cutting portion 2 and
Shank section 3, apex point portion 1 are connect with cutting portion 2, and cutting portion 2 is connect with shank section 3, the outer lateral edge axis in apex point portion 1 and cutting portion 2
To the cutter groove 4 with arcuate structure 41 is equipped with, cutting edge 5 is formed between adjacent two cutter groove 4；Arcuate structure 41 includes the first circular arc
411 and the second circular arc 412 for connecting with the first circular arc 411, the radius of the radius of the first circular arc 411 and the second circular arc 412 not phase
Deng as shown in Fig. 2, dotted line is the separator bar of the first circular arc 411 and the second circular arc 412 in figure.It specifically, can be by using having
The grinding wheel of two radiuses differences and contour curve interconnected carries out grinding to cutter and forms cutter groove 4, i other words, grinding wheel tool
There are two kinds of unequal contour curves of radius of R1, R2, can be ground to form the arcuate structure 41 by the grinding wheel, so that the arc knot
First circular arc 411 of structure 41 and the radius of the second circular arc 412 are unequal；There was only one of half with the cutter groove 4 of existing cutter
The circular arc of diameter is compared, the hard alloy of the utility model molding gouge bit 100 can while enhancing tool strength and cutting force,
Ensure that the chip space of cutter.
Referring to Fig. 1, cutter groove 4 helically is set around the outside in apex point portion 1 and cutting portion 2, compared with straight-line groove, cutter
It will not be vibrated in processing, so that the surface of processing can be more smooth.The hand of spiral of cutter groove 4 is right-hand screw, and cutting edge 5 is
Right sword.I other words the hard alloy molding gouge bit 100 of the utility model is right sword right-hand screw drill bit, formed in hard alloy
When gouge bit 100 carries out drilling processing, chip can be excluded along cutter groove 4 from the direction of shank section 3, to guarantee the flat of Milling Process
Steady operation, avoids chip from impacting the surface of processing, and then improves the surface quality of product and further increase cutter
Service life.Specifically, since helical angle is excessive, strength reduction at drill bit cutting edge can be made, radiating condition is deteriorated, therefore in this reality
It applies in example, for the intensity for guaranteeing cutting edge 5, avoids cutting edge 5 excessively sharp and lead to that tipping occurs in processing, cutter groove 4
Helical angle size is in the range of 18 ° -30 °.2 Φ represent apex angle in Fig. 1, and the apex angle of drill bit is to determine chip removal angle, cutting
An important factor for power, the generation of burr, hole inner wall roughness, thus after influencing the cutting ability of drill bit, service life and drilling processing
The processing quality in hole.Therefore, in actual processing, the selection of drill head apical angle is to processing quality, the raising bit life for guaranteeing hole
And the production efficiency important in inhibiting of drilling processing, therefore to guarantee that hard alloy forms the service life of gouge bit 100, at this
In embodiment, the 2 Φ size of end apex angle in apex point portion 1 is in the range of 128 ° -138 °.
Referring to Fig. 2, in figure D1 represent cutting portion 2 core it is thick, it is wide that D2 represents arc, after study and test of many times, first
The radius ratio of circular arc 411 and the second circular arc 412 is 9:16, and it is 1:1.95 that the ratio between the core thickness of cutting portion 2 and arc are wide, to enhancing cutter
Intensity simultaneously guarantees that cutter has the effect of enough chip spaces best.Significantly, since there are mismachining tolerance and processing
The radius ratio of the problem of precision, the first circular arc 411 and the second circular arc 412 can be about the core thickness and arc of 9:16 and cutting portion 2
The ratio between width can be about 1:1.95.By taking D2.8 drill bit as an example, the radius of the first circular arc 411 is 0.9 millimeter, the second circular arc 412
Radius is 1.6 millimeters, and core thickness is 0.95 millimeter, and arc width is 1.8 millimeters.
To sum up, the cutter groove 4 of the hard alloy molding gouge bit 100 of the utility model has an arcuate structure 41, the arc
Structure 41 includes the first circular arc 411 and the second circular arc 412 for connecting with the first circular arc 411, and the radius of the first circular arc 411 and the
The radius of two circular arcs 412 is unequal, and compared with the cutter groove 4 of existing cutter only has the circular arc of one of radius, this is practical new
The hard alloy molding gouge bit 100 of type increases knife by wherein another circular arc while guaranteeing the chip space of cutter
The core of tool is thick, to enhance tool strength and cutting force；Alternatively, while guaranteeing tool strength and cutting force, by wherein
Another circular arc is thick come the core for reducing cutter, to increase chip space；By above two situation, so that cutter can carry out great Yu
Amount, the high processing fed, to meet customer requirement, and guarantee that cutter is not easily broken.
Above disclosed is only the preferred embodiments of the utility model, and the power of the utility model cannot be limited with this
Sharp range, therefore equivalent variations made according to the claim of the utility model belong to the range that the utility model is covered.
Claims (6)
1. a kind of hard alloy forms gouge bit, which is characterized in that including apex point portion, cutting portion and shank section, the apex point portion
It is connect with the cutting portion, the cutting portion is connect with the shank section, the outer lateral edge axis in the apex point portion and the cutting portion
To the cutter groove with arcuate structure is equipped with, cutting edge is formed between adjacent two cutter groove, the arcuate structure includes the first circle
Arc and the second circular arc to connect with first circular arc, the radius of the radius of first circular arc and second circular arc not phase
It is 9:16 Deng the radius ratio of, first circular arc and second circular arc, it is 1 that the ratio between the core thickness and arc of the cutting portion are wide:
1.95。
2. hard alloy according to claim 1 forms gouge bit, which is characterized in that the cutter groove helically is set around
The outside in the apex point portion and the cutting portion.
3. hard alloy according to claim 2 forms gouge bit, which is characterized in that the hand of spiral of the cutter groove is the right side
Spiral.
4. hard alloy according to claim 2 forms gouge bit, which is characterized in that at the helical angle size of the cutter groove
In the range of 18 ° -30 °.
5. hard alloy according to claim 1 forms gouge bit, which is characterized in that the radius of first circular arc is
0.9 millimeter, the radius of second circular arc is 1.6 millimeters.
6. hard alloy according to claim 1 forms gouge bit, which is characterized in that the end apex angle in the apex point portion is big
It is small to be in the range of 128 ° -138 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821698177.3U CN209110249U (en) | 2018-10-18 | 2018-10-18 | Hard alloy forms gouge bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821698177.3U CN209110249U (en) | 2018-10-18 | 2018-10-18 | Hard alloy forms gouge bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209110249U true CN209110249U (en) | 2019-07-16 |
Family
ID=67201496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821698177.3U Expired - Fee Related CN209110249U (en) | 2018-10-18 | 2018-10-18 | Hard alloy forms gouge bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209110249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115302319A (en) * | 2021-05-07 | 2022-11-08 | 创国兴业有限公司 | Method for remaking drill bit |
-
2018
- 2018-10-18 CN CN201821698177.3U patent/CN209110249U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115302319A (en) * | 2021-05-07 | 2022-11-08 | 创国兴业有限公司 | Method for remaking drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190716 |