CN209394037U - A kind of alloy step drill - Google Patents
A kind of alloy step drill Download PDFInfo
- Publication number
- CN209394037U CN209394037U CN201822252290.5U CN201822252290U CN209394037U CN 209394037 U CN209394037 U CN 209394037U CN 201822252290 U CN201822252290 U CN 201822252290U CN 209394037 U CN209394037 U CN 209394037U
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- CN
- China
- Prior art keywords
- cutting edge
- knife bar
- drilling
- alloy
- cutter assembly
- 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 belongs to auto parts and components processing equipment field, and in particular to a kind of alloy step drill, comprising: knife bar, the boring assemblies positioned at the step cutter assembly of knife bar end and positioned at step cutter assembly end.Step cutter assembly and boring assemblies are arranged on same knife bar the alloy step drill of the utility model, disposable to complete drilling and step processing, improve production efficiency；Reduce number of changing knife simultaneously, ensure that machining accuracy.
Description
Technical field
The utility model relates to auto parts and components processing equipment fields, and in particular to a kind of alloy step drill.
Background technique
Alloy bit generally refers to carbide drill, and the main component of hard alloy is tungsten carbide, cobalt carbide etc., firmly
It spends relatively high, generally all at HRC90 degree or more, is very suitable to the higher part of batch machining hardness.Automobile variable speed tank shell by
In structure is complicated, machined surface is more, generally requires drilling and step cutting etc. and once carries out in equipment, to reduce tool changing time
Number guarantees machining accuracy.And existing alloy bit has a single function, inefficiency, it is difficult to guarantee processing efficiency.
Utility model content
The purpose of the utility model is to provide a kind of alloy step drills, and step cutter assembly and boring assemblies setting are existed
On same knife bar, with primary completion drilling and step processing.
In order to solve the above-mentioned technical problem, the utility model provides a kind of alloy step drill, comprising: knife bar is located at knife
The step cutter assembly of boom end and boring assemblies positioned at step cutter assembly end；The boring assemblies include: several edges
The drilling cutting edge of circumferentially-spaced；The apex point of each drilling cutting edge is suitable for converging on the central axis of knife bar, so as to bore
Aperture member is radially formed radial from central axis.
Further, the drilling cutting edge is for four and symmetrical；And in each parallel knife bar of cutting edge that drills
Mandrel line.
Further, the S-type arc-shaped of apex point of the drilling cutting edge, inclination angle are 50 ° -65 °.
Further, chip space is suitably formed between adjacent two drilling cutting edge.
Further, the step cutter assembly includes: step cutting edge；The diameter of the knife bar is greater than boring assemblies, makes
The junction of knife bar and each cutting blade forms an annular step surface, for installing the step cutting edge.
Further, the surface of the drilling cutting edge is equipped with wear-resistant coating.
The utility model has the beneficial effects that the alloy step drill of the utility model is by step cutter assembly and boring assemblies
It is arranged on same knife bar, it is disposable to complete drilling and step processing, improve production efficiency；Reduce number of changing knife simultaneously,
It ensure that machining accuracy.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the alloy step drill of the utility model；
Fig. 2 is the left view of the alloy step drill of the utility model；
Fig. 3 is the structural schematic diagram of the boring assemblies of the utility model；
Fig. 4 is the structural schematic diagram of the apex point of the utility model；
In figure: knife bar 1, step cutter assembly 2, annular step surface 21, boring assemblies 3, drill cutting edge 31, apex point 311,
Apex point inclination angle ɑ, chip space 32.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
Fig. 1 is the structural schematic diagram of the alloy step drill of the utility model.
As shown in Figure 1, present embodiments providing a kind of alloy step drill, comprising: knife bar 1, the step positioned at 1 end of knife bar
Cutter assembly 2 and boring assemblies 3 positioned at 2 end of step cutter assembly.Specifically, the step cutter assembly 2 and drilling group
Part 3 is sequentially coaxially arranged along knife bar 1, ensure that the concentricity of drilling and step surface.
Optionally, step can also can be cut group by modes such as welding with integrated molding by the alloy step drill
Part, boring assemblies difference soldering are on knife bar.
Step cutter assembly and boring assemblies are arranged on same knife bar the alloy step drill of the present embodiment, disposable complete
At drilling and step processing, production efficiency is improved；Reduce number of changing knife simultaneously, ensure that machining accuracy.
Fig. 2 is the left view of the alloy step drill of the utility model.
Fig. 3 is the structural schematic diagram of the boring assemblies of the utility model.
A kind of optional embodiment as boring assemblies.
See that Fig. 3, the boring assemblies 3 include: several drilling cutting edges 31 being circumferentially spaced apart；Each drilling cutting edge
31 apex point 311 is suitable for converging on the central axis of knife bar 1, so that boring assemblies 3 are radially formed radiation from central axis
Shape.
Preferably, see that Fig. 2, the drilling cutting edge 31 are for four and symmetrical；And each drilling cutting edge 31 is put down
The central axis of row knife bar 1 is arranged.
Preferably, see Fig. 3 and Fig. 4, the S-type arc-shaped of apex point 311 of the drilling cutting edge 31, inclination angle ɑ is 50 °-
65 °, cutting sharpness can be improved, to guarantee processing effect.
The boring assemblies of present embodiment pass through the drilling that the drilling cutting edge being radially arranged realizes alloy step drill
Function；S type arc-shaped is set by apex point, cutting sharpness can be improved, improve drilling efficiency.
Further, see Fig. 3, suitably form chip space 32 between adjacent two drilling cutting edge 31.Since drilling cutting edge is flat
The central axis of row knife bar is arranged, so the linear channel-shaped of each chip space, and be independent of each other, the smoothness of chip removal is improved,
It prevents cutting swarf to be deposited in apex point, influences processing efficiency, or even damage machined surface.
A kind of optional embodiment as step cutter assembly.
See that Fig. 1, the step cutter assembly 2 include: step cutting edge；The diameter of the knife bar 1 is greater than boring assemblies 3,
The junction of knife bar 1 and each cutting blade 31 is set to form an annular step surface 21, for installing the step cutting edge.
The step cutter assembly of present embodiment not only reduces alloy platform by annular step surface installation step cutting edge
The volumetric spaces that rank is bored, improve the rigidity and stability of alloy step drill, while it is same to also assure that drilling and step are processed
Axis degree, improves machining accuracy.
Further, the surface of the drilling cutting edge 31 is equipped with wear-resistant coating, such as, but not limited to aluminium nitride chromium (AlCrN)
Coating, microhardness can achieve 3200HV, and thermal stability is higher, and the degree of wear of drilling cutting edge can be effectively reduced, prolong
Its long service life.
In conclusion step cutter assembly and boring assemblies are arranged on same knife bar this alloy step drill, disposably
Drilling and step processing are completed, production efficiency is improved；Reduce number of changing knife simultaneously, ensure that machining accuracy.Boring assemblies
The drilling function of alloy step drill is realized by the drilling cutting edge being radially arranged；S type arc-shaped is set by apex point, it can
Sharpness is cut to improve, improves drilling efficiency；The chip space of straight line channel-shaped improves the smoothness of chip removal.Step cutting group
Part not only reduces the space of alloy step drill, improves alloy step drill by annular step surface installation step cutting edge
Rigidity and stability, while also assuring the concentricity of drilling and step processing, improve machining accuracy.Therefore, this alloy platform
Rank, which is bored, can integrate the functions such as drilling, step cutting, in processing complex parts, especially automobile variable speed tank shell,
Without replacement cutter or process equipment, one-pass molding, with beat height, concentricity is high, cutter hub is rigidly good, repeated clamping precision is high
The advantages that.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (6)
1. a kind of alloy step drill characterized by comprising
Knife bar (1), the step cutter assembly (2) for being located at knife bar (1) end and the drilling group for being located at step cutter assembly (2) end
Part (3)；
The boring assemblies (3) include: several drilling cutting edges (31) being circumferentially spaced apart；
The apex point (311) of each drilling cutting edge (31) is suitable for converging on the central axis of knife bar (1), so that boring assemblies (3)
It is radially formed from central axis radial.
2. alloy step drill according to claim 1, which is characterized in that
The drilling cutting edge (31) is for four and symmetrical；And
The central axis of each cutting edge (31) parallel knife bar (1) that drills.
3. alloy step drill according to claim 1 or 2, which is characterized in that
The S-type arc-shaped of apex point of drilling cutting edge (31), inclination angle are 50 ° -65 °.
4. alloy step drill according to claim 1, which is characterized in that
Chip space (32) are suitably formed between adjacent two drilling cutting edge (31).
5. alloy step drill according to claim 1, which is characterized in that
The step cutter assembly (2) includes: step cutting edge；
The diameter of the knife bar (1) is greater than boring assemblies (3), forms knife bar (1) and the junction of each drilling cutting edge (31)
One annular step surface (21), for installing the step cutting edge.
6. alloy step drill according to claim 1, which is characterized in that
The surface of drilling cutting edge (31) is equipped with wear-resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822252290.5U CN209394037U (en) | 2018-12-29 | 2018-12-29 | A kind of alloy step drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822252290.5U CN209394037U (en) | 2018-12-29 | 2018-12-29 | A kind of alloy step drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209394037U true CN209394037U (en) | 2019-09-17 |
Family
ID=67897215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822252290.5U Expired - Fee Related CN209394037U (en) | 2018-12-29 | 2018-12-29 | A kind of alloy step drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209394037U (en) |
-
2018
- 2018-12-29 CN CN201822252290.5U patent/CN209394037U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190917 Termination date: 20201229 |