CN209664436U - A kind of broaching tool - Google Patents
A kind of broaching tool Download PDFInfo
- Publication number
- CN209664436U CN209664436U CN201822119919.9U CN201822119919U CN209664436U CN 209664436 U CN209664436 U CN 209664436U CN 201822119919 U CN201822119919 U CN 201822119919U CN 209664436 U CN209664436 U CN 209664436U
- Authority
- CN
- China
- Prior art keywords
- broaching tool
- coating
- bit base
- rake face
- utility
- 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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- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The utility model provides a kind of broaching tool, comprising: bit base；The metal coating on the bit base surface is set.Broaching tool provided by the utility model is due to metal coating, especially Cr coating and Al coating are set gradually on bit base surface, the service life of broaching tool can be significantly improved, reduce the cutting force of broaching tool, so as to reduce the number of replacement cutter, processing cost is saved, keeps the workpiece with form surface precision height processed, finish good.
Description
Technical field
The utility model relates to cutting-tool engineering field more particularly to a kind of broaching tools.
Background technique
Broaching tool is the forming tool for broaching, and when broaching tool makees broaching movement, cutter tooth cuts certain thickness from workpiece
Metal, finally obtain required size and shape.Broaching tool be usually used in batch in mass production process circular hole, splined hole,
Keyway, plane and forming surface, high production efficiency.
Broaching tool in the prior art service life, cutting force, workpieces processing forming surface precision and finish in terms of also
Up for further improving, how to improve broaching tool performance and save cost as those skilled in the art's focus of attention.
Utility model content
In view of this, broaching tool provided by the utility model uses the longevity the purpose of this utility model is to provide a kind of broaching tool
Life length, the workpiece with form surface precision of processing is high, finish is good.
The utility model provides a kind of broaching tool, comprising:
Bit base；
The metal coating on the bit base surface is set；
The bit base end is provided with arc groove, and the bit base is equipped with rake face part and flank portion
Point, the rake face part is located at arc groove close to the end of flank part, the rake face part and flank part
Junction form the point for being used for converted products, the tip of the point is equipped with connecting arc.
The utility model does not have special limitation to the size of the arc groove, and those skilled in the art can be according to reality
Demand is selected.
In the present invention, the surface of the rake face part is preferably plane.In the present invention, the preceding knife
The width of face part is preferably 0.4~0.6mm, more preferably 0.5mm.In the present invention, the rake face part and production
Angle between product finished surface vertical plane is preferably 12~18 °, more preferably 14~16 °, most preferably 15 °.
In the present invention, the angle between the flank part and the finished surface of product be preferably 1.8~
2.2 °, more preferably 1.9~2.1 °, most preferably 2.0 °；The intensity of cutting edge can so be significantly improved without increasing frictional force.
In the present invention, the radius of the connecting arc is preferably 0.02~0.04mm, more preferably 0.03mm.
In the present invention, it is preferred to use the bit base of above structure, above-mentioned bit base utilize rake face part
Point between flank part processes product, and connecting arc will be arranged at the tip of the tip portion,
Keep sharp under the premise of guaranteeing that cutting edge roundness has sufficient intensity, to reduce cutting force, so that the risk of cutter tipping is reduced,
Broaching tool comprehensive performance can be significantly improved, broaching power is reduced, improves broaching tool intensity and rigidity, extends broaching tool service life,
Reduce use cost.
In the present invention, the thickness of the metal coating is preferably 2~3 μm, and more preferably 2.2~2.8 μm, most
Preferably 2.4~2.6 μm；Since the dimensional tolerance control of broaching tool is very strict, metal coating is too thin to be not achieved required effect,
Metal coating is too thick may then to exceed the margin of tolerance, and therefore, the utility model controls metal coating preferably with a thickness of 2~3 μm.
In the present invention, the metal coating preferably includes:
The Cr coating on the bit base surface is set；
The Al coating of the Cr coating surface is set.
In the present invention, the thickness of the Cr coating is preferably 1~1.5 μm, and more preferably 1.1~1.4 μm, most
Preferably 1.2~1.3 μm.In the present invention, the thickness of the Al coating is preferably 1~1.5 μm, more preferably 1.1~
1.4 μm, most preferably 1.2~1.3 μm.
In the present invention, the Cr coating has good wearability and inoxidizability；The Al coating has height
Warm hardness, thermohardening, edge wear can obtain very sharp and stable cutting edge roundness；The utility model is in the drawing
Knife matrix surface, which sets gradually Cr coating and Al coating, can make broaching tool have good comprehensive performance；Cr and Al is richness simultaneously
Element is produced, the cost of coating can be significantly reduced using prepares coating.
In the present invention, the preparation method of the metal coating is preferred are as follows:
Metallic element particles are precipitated on the bit base surface, is then kept the temperature, forms metal coating.
In the present invention, the temperature of the precipitating is preferably 450~470 DEG C, and more preferably 455~465 DEG C, most
Preferably 460 DEG C.The utility model carries out precipitating at the temperature disclosed above can be not only used for hard alloy cutter metal coating
Preparation, it can also be used to which the preparation of high-speed steel tool metal coating both can satisfy precipitating quality and efficiency, can also be to avoid because of height
The change of material property caused by temperature and the variation of the shape of tool, it is ensured that the situation that the technical requirements of cutter turn for the better after coating
Variation.Since the size requirement of broaching tool is very accurate, it is likely to result in being processed object if the thickness control of coating is bad
Size failure beyond design requirement carries out the thickness that precipitating can be relatively easy to control metal coating at the temperature disclosed above,
To be easy to control metal coating to the advantageous direction change of prototype cutter.
In the present invention, the precipitating carries out preferably in protective gas, and the protective gas is preferably nitrogen
Gas.In the present invention, the time of the heat preservation is preferably 10~20 minutes, and more preferably 15 minutes.
In the present invention, the preparation method of the metal coating is more preferably:
In the bit base surface precipitate C r particle, Cr coating is formed；
In the Cr coating surface precipitate A l particle, Al coating is formed；
It comes out of the stove room temperature is cooled to the furnace after the product heat preservation after formation Al coating.
In the present invention, the temperature of precipitate C r particle is preferably 450~470 DEG C, and more preferably 455~465 DEG C,
Most preferably 460 DEG C；The temperature of precipitate A l particle is preferably 450~470 DEG C, more preferably 455~465 DEG C, most preferably 460
℃。
Metal coating is arranged in the utility model in broaching tool, not only ensure that broaching tool cutting edge Reasonable Shape is unaffected, but also increases
The hardness, finish and lubricity of broaching tool edge surface are added.Broaching tool provided by the utility model is due to metal coating, especially
It is to set gradually Cr coating and Al coating on bit base surface, can significantly improve the service life of broaching tool, reduces broaching tool
Cutting force save processing cost so as to reduce the number of replacement cutter, the workpiece with form surface precision for making to process is high, light
Cleanliness is good.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the structural schematic diagram of broaching tool provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment
Broaching tool structure provided in this embodiment is as shown in Figure 1, comprising:
Bit base 1, bit base 1 are equipped with the rake face part 2 and flank part 3 that width is 0.5mm；
The end of bit base 1 is equipped with arc groove, and rake face part 2 is located at arc groove close to flank part 3
End, the junction of rake face part 2 and flank part 3 form the point for being used for converted products, at the tip of point
The connecting arc 4 for being 0.03mm equipped with radius；Included angle A between flank part 3 and product finished surface 5 is 2 °；Rake face
Included angle B between part 2 and product finished surface vertical plane 6 is 15 °；
Be arranged in 1 surface of bit base with a thickness of 1.25 μm of Cr coating 7；
Be arranged in Cr coating surface with a thickness of 1.25 μm of Al coating 8.
As seen from the above embodiment, the utility model provides a kind of broaching tool, comprising: bit base；It is arranged in the drawing
The metal coating of knife matrix surface；The bit base end is provided with arc groove, and the bit base is equipped with rake face
Part and flank part, the rake face part is located at arc groove close to the end of flank part, the rake face portion
Divide and the junction of flank part forms the point for being used for converted products, the tip of the point is equipped with connecting arc.
Broaching tool provided by the utility model is due to especially setting gradually Cr coating on bit base surface and Al is applied with metal coating
Layer, can significantly improve the service life of broaching tool, reduce the cutting force of broaching tool, so as to reduce the number of replacement cutter, section
About processing cost keeps the workpiece with form surface precision height processed, finish good.
Claims (9)
1. a kind of broaching tool characterized by comprising
Bit base, the end of the bit base are equipped with arc groove, and the bit base is equipped with rake face part with after
Blade face sections, the rake face part are located at the arc groove close to the end of flank part, the rake face part with
The junction of flank part forms the point for being used for converted products, is equipped with connecting arc at the tip of the point；
The metal coating on the bit base surface is set.
2. broaching tool according to claim 1, which is characterized in that the metal coating with a thickness of 2~3 μm.
3. broaching tool according to claim 1, which is characterized in that the metal coating includes:
The Cr coating on the bit base surface is set；
The Al coating of the Cr coating surface is set.
4. broaching tool according to claim 3, which is characterized in that the Cr coating with a thickness of 1~1.5 μm.
5. broaching tool according to claim 3, which is characterized in that the Al coating with a thickness of 1~1.5 μm.
6. broaching tool according to claim 1, which is characterized in that the radius of the connecting arc is 0.02~0.04mm.
7. broaching tool according to claim 1, which is characterized in that the surface of the rake face part is plane.
8. broaching tool according to claim 1, which is characterized in that the width of the rake face part is 0.4~0.6mm.
9. broaching tool according to claim 8, which is characterized in that the width of the rake face part is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822119919.9U CN209664436U (en) | 2018-12-17 | 2018-12-17 | A kind of broaching tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822119919.9U CN209664436U (en) | 2018-12-17 | 2018-12-17 | A kind of broaching tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209664436U true CN209664436U (en) | 2019-11-22 |
Family
ID=68562704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822119919.9U Expired - Fee Related CN209664436U (en) | 2018-12-17 | 2018-12-17 | A kind of broaching tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209664436U (en) |
-
2018
- 2018-12-17 CN CN201822119919.9U patent/CN209664436U/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: 20191122 Termination date: 20211217 |