CN210147172U - Double-correction extrusion screw tap - Google Patents
Double-correction extrusion screw tap Download PDFInfo
- Publication number
- CN210147172U CN210147172U CN201920431311.1U CN201920431311U CN210147172U CN 210147172 U CN210147172 U CN 210147172U CN 201920431311 U CN201920431311 U CN 201920431311U CN 210147172 U CN210147172 U CN 210147172U
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- China
- Prior art keywords
- correction
- rectangular
- correcting
- extrusion
- double
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- 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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- 238000012937 correction Methods 0.000 title claims abstract description 55
- 238000001125 extrusion Methods 0.000 title claims abstract description 33
- 230000004323 axial length Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000012797 qualification Methods 0.000 abstract description 2
- 238000010079 rubber tapping Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a double-correction extrusion screw tap, include: the extrusion part, the first correction part, the second correction part and the wire cone are sequentially detachably connected; the extruding part, the first correcting part and the second correcting part are in threaded continuity; rectangular bulges are arranged at one ends of the extrusion part, the first correction part and the second correction part; the other ends of the first correcting part and the second correcting part and the filament cone are provided with rectangular grooves used for being matched with the rectangular bulges; a limiting bulge is further arranged on one side surface of the rectangular bulge; and a limiting groove matched with the limiting bulge is further arranged on one side surface of the rectangular groove. The utility model provides a double correction extrusion screw tap can change different positions according to the degree of wear of screw tap. Or adjusting the extruding part or the correcting part with different specifications according to the workpiece hole. The utility model provides a double-correction extrusion screw tap, the internal thread precision of processing out is high, and the qualification rate is high. The service life of the overall cutter is prolonged, and the product cost is reduced.
Description
Technical Field
The utility model relates to the technical field of machinery, especially, relate to a double correction extrusion screw tap.
Background
The extrusion screw tap is a thread tool for processing internal threads by utilizing the metal plastic deformation principle, is a chipless processing technology, is particularly suitable for copper alloy and aluminum alloy with lower strength and better plasticity, can also be used for tapping materials with low hardness and large plasticity, such as stainless steel, low-carbon steel and the like, and has long service life. However, due to the fact that the tooth part of the tap is abraded, used in an irregular mode or collided due to long-term use of the tap, errors occur in thread pitch or accuracy after tapping or a large amount of burrs are generated, and the qualified rate of workpieces is reduced. This occurs both in the pressing portion and in the correcting portion, and in particular when the correcting portion wears, the thread accuracy is directly affected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the defect among the prior art and provided a double correction extrusion screw tap.
The utility model provides a double correction extrusion screw tap, include: the device comprises a wire cone body, an extrusion part, a first correction part and a second correction part; wherein the extrusion part, the first correction part, the second correction part and the filament cone are detachably connected in sequence; the pressing portion, the first correcting portion and the second correcting portion are continuous in thread; one ends of the extruding part, the first correcting part and the second correcting part are provided with rectangular bulges; the other ends of the first correcting part and the second correcting part and the filament cone are provided with rectangular grooves used for being matched with the rectangular bulges; a limiting bulge is further arranged on one side surface of the rectangular bulge; and a limiting groove matched with the limiting bulge is further arranged on one side surface of the rectangular groove.
In the utility model discloses, the rectangle arch has magnetism.
The utility model discloses in, the screw tooth diameter of extrusion portion increases progressively in proper order, and every level increases progressively the 10% diameter of preceding one-level.
The utility model discloses in, first correction portion with second correction portion screw thread equidistance.
In the present invention, the length of the diagonal line of the rectangular protrusion corresponding to the first correcting portion and the second correcting portion is greater than the radius thereof; the length of the diagonal line of the rectangular protrusion of the pressing part is larger than the maximum radius of the rectangular protrusion.
The utility model discloses in, the extrusion portion first correction portion the protruding axial length of rectangle that second correction portion corresponds is greater than two-thirds of its axial length.
The utility model discloses in, the pitch of second correction portion is greater than the pitch of first correction portion.
The utility model provides a double correction extrusion screw tap, the internal thread of processing is through twice correction, can eliminate the precision error that the cutter wearing and tearing formed.
The utility model provides a double correction extrusion screw tap can change different positions according to the degree of wear of screw tap. Or adjusting the extruding part or the correcting part with different specifications according to the workpiece hole.
The utility model provides a double-correction extrusion screw tap, the internal thread precision of processing out is high, and the qualification rate is high. The service life of the overall cutter is prolonged, and the product cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the double-correction extrusion tap of the present invention.
Fig. 2 is a schematic diagram of the rectangular protrusion of the present invention.
Fig. 3 is a schematic diagram of the arrangement of the limiting protrusion of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following specific examples and the accompanying drawings. The procedures, conditions, experimental methods and the like for carrying out the present invention are general knowledge and common general knowledge in the art except for the contents specifically mentioned below, and the present invention is not particularly limited.
In fig. 1-3, 1-the cone; 2-an extrusion part; 3-a first correction section; 4-a second correction section; 5-rectangular protrusion; 6-limiting protrusion.
As shown in fig. 1-3, the present invention provides a double-correction thread forming tap, comprising: the device comprises a wire cone body, an extrusion part, a first correction part and a second correction part.
In the utility model, the extrusion part, the first correction part, the second correction part and the cone body are detachably connected in turn; the extruding part, the first correcting part and the second correcting part are in threaded continuity; rectangular bulges are arranged at one ends of the extrusion part, the first correction part and the second correction part; the other ends of the first correcting part and the second correcting part and the filament cone are provided with rectangular grooves used for being matched with the rectangular bulges; a limiting bulge is further arranged on one side surface of the rectangular bulge; and a limiting groove matched with the limiting bulge is further arranged on one side surface of the rectangular groove.
The utility model discloses in, the rectangle arch has magnetism.
In the utility model, the diagonal length of the rectangular bulge corresponding to the first correcting part and the second correcting part is larger than the radius of the rectangular bulge; the length of the diagonal line of the rectangular protrusion of the pressing part is greater than the maximum radius thereof.
The utility model discloses in, the protruding axial length of rectangle that extrusion portion, first correction portion, second correction portion correspond is greater than two-thirds of its axial length.
The utility model discloses in, the screw tooth diameter of extrusion portion increases progressively in proper order, and every level increases progressively the 10% diameter of preceding one-level.
The utility model discloses in, the screw thread equidistance of first correction portion and second correction portion.
The utility model discloses in, the pitch of second correction portion is greater than the pitch of first correction portion.
The utility model discloses a screw tap at removable each position has reduced the overall tapping cost, has also indirectly improved the internal thread precision simultaneously, has reduced the defect that the precision reduces along with the live time increase at current screw tap.
The utility model discloses set up spacing arch again in the rectangle arch for each partial screw thread can not make mistakes in succession.
The protection of the present invention is not limited to the above embodiments. Variations and advantages that may occur to those skilled in the art may be incorporated into the invention without departing from the spirit and scope of the inventive concept, and the scope of the appended claims is intended to be protected.
Claims (7)
1. A double correction tap, comprising: the device comprises a wire cone body, an extrusion part, a first correction part and a second correction part; wherein,
the extrusion part, the first correction part, the second correction part and the filament cone are sequentially detachably connected;
the pressing portion, the first correcting portion and the second correcting portion are continuous in thread;
one ends of the extruding part, the first correcting part and the second correcting part are provided with rectangular bulges;
the other ends of the first correcting part and the second correcting part and the filament cone are provided with rectangular grooves used for being matched with the rectangular bulges;
a limiting bulge is further arranged on one side surface of the rectangular bulge; and a limiting groove matched with the limiting bulge is further arranged on one side surface of the rectangular groove.
2. The double correction extrusion tap according to claim 1 wherein said rectangular projection is magnetic.
3. A double correction extrusion tap according to claim 1 wherein the thread diameter of said extrusion increases in successive steps, each step increasing by 10% of the diameter of the previous step.
4. The double corrected extrusion tap according to claim 1 wherein said first correction portion and said second correction portion are equally threaded.
5. The double-corrected extrusion tap according to claim 1, wherein the diagonal length of the rectangular projections corresponding to said first correcting portion and said second correcting portion is larger than the radius thereof; the length of the diagonal line of the rectangular protrusion of the pressing part is larger than the maximum radius of the rectangular protrusion.
6. The double correction tap according to claim 1, wherein said pressing portion, said first correcting portion and said second correcting portion correspond to rectangular projections having an axial length greater than two thirds of an axial length thereof.
7. The double correction extrusion tap according to claim 1, wherein a pitch of said second correction portion is larger than a pitch of said first correction portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920431311.1U CN210147172U (en) | 2019-04-01 | 2019-04-01 | Double-correction extrusion screw tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920431311.1U CN210147172U (en) | 2019-04-01 | 2019-04-01 | Double-correction extrusion screw tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210147172U true CN210147172U (en) | 2020-03-17 |
Family
ID=69756249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920431311.1U Expired - Fee Related CN210147172U (en) | 2019-04-01 | 2019-04-01 | Double-correction extrusion screw tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210147172U (en) |
-
2019
- 2019-04-01 CN CN201920431311.1U patent/CN210147172U/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 |
Granted publication date: 20200317 Termination date: 20210401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |