CN210524046U - Screw tap with improved threads - Google Patents
Screw tap with improved threads Download PDFInfo
- Publication number
- CN210524046U CN210524046U CN201921479293.0U CN201921479293U CN210524046U CN 210524046 U CN210524046 U CN 210524046U CN 201921479293 U CN201921479293 U CN 201921479293U CN 210524046 U CN210524046 U CN 210524046U
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- China
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- reaming
- processing
- lateral surface
- connecting portion
- screw tap
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Abstract
The utility model provides a screw tap of improvement screw thread, including handle of a knife, first connecting portion, processing portion, second connecting portion, reaming portion, processing portion lateral surface is equipped with the sword groove, processing portion lateral surface still is equipped with first chip groove, reaming portion lateral surface is the arc surface, reaming portion lateral surface still is equipped with the second chip groove, processing portion is left-handed sword structure, reaming portion is the right-handed sword structure. The utility model discloses a screw tap has increased a reaming portion at the processing portion front end, can the reaming of reaming, can effectual solution burr etc. influence the problem in aperture.
Description
Technical Field
The utility model relates to a screw tap technical field, concretely relates to screw tap of improvement screw thread.
Background
The screw tap is also called a screw tap and is divided into a straight-groove screw tap, a spiral-groove screw tap and a spiral-tip screw tap according to the shape, and the spiral-groove screw tap and the spiral-tip screw tap are provided with grooves along the axial direction and are tools for processing internal threads. The tap in the prior art generally has a processing part, the surface of the processing part is of an external thread structure, and the tap is a relatively standard processing product as shown in fig. 4 and 5 in the processing process of a processing pipe 7, but in the actual process, as shown in fig. 6, burrs are formed on the inner side of the processed pipe 7 after processing, such as the position of the reference number C, and the inner diameter size of the processed pipe 7 is influenced.
SUMMERY OF THE UTILITY MODEL
To above problem, the utility model provides a screw tap of improvement screw thread has increased a reaming portion at the processing portion front end, can ream, can effectual solution burr etc. influence the problem in aperture.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a screw tap of improvement screw thread, includes handle of a knife, first connecting portion, processing portion, second connecting portion, reaming portion, processing portion lateral surface is equipped with the sword groove, processing portion lateral surface still is equipped with first chip groove, reaming portion lateral surface is the arc surface, reaming portion lateral surface still is equipped with the second chip groove, processing portion is left rotary knife structure, reaming portion is right rotary knife structure.
Specifically, a transition area is arranged between the tool shank and the first connecting portion, and the transition area is in a circular truncated cone shape.
Specifically, the handle of a knife is kept away from first connecting portion one end still is connected with the installation department.
Specifically, one end, far away from the second connecting portion, of the hinge hole portion is connected with a conical head portion.
Specifically, the cross section of the second connecting part is circular, and the outer diameter of the second connecting part is smaller than the outer diameters of the processing part and the hinge hole part.
The utility model has the advantages that:
the utility model discloses a screw tap has increased a reaming portion at the processing portion front end, and the cutting direction of reaming portion is opposite with the processing portion, and the screw tap reversal withdraws from the screw after attacking the tooth, can utilize the burr that the reaming portion produced when will attacking the tooth to get rid of, has realized the reaming, can the problem in influence aperture such as effectual solution burr.
Drawings
Fig. 1 is a schematic structural diagram of a thread-modified tap according to the present invention.
Fig. 2 is a cross-sectional view taken along the plane a-a in fig. 1.
Fig. 3 is a cross-sectional view taken along the plane B-B in fig. 1.
Fig. 4 is a schematic view of the structure of the process tube.
FIG. 5 is a schematic view of a machined pipe after drilling a standard internal thread.
Fig. 6 is a schematic view of the structure of the inner thread burr drilled by processing the pipe.
The reference signs are: the tool comprises a tool shank 1, a mounting part 11, a first connecting part 2, a machining part 3, a first chip groove 31, a second connecting part 4, a reaming part 5, a second chip groove 51, a conical head 52, a transition area 6 and a machining pipe 7.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
As shown in fig. 1-3:
the utility model provides a screw tap of improvement screw thread, including handle of a knife 1, first connecting portion 2, processing part 3, second connecting portion 4, reaming portion 5, 3 lateral surfaces of processing part are equipped with the sword groove, 3 lateral surfaces of processing part still are equipped with first chip groove 31, 5 lateral surfaces of reaming portion are the arc surface, 5 lateral surfaces of reaming portion still are equipped with second chip groove 51, processing part 3 is left-handed sword structure, reaming portion 5 is right-handed sword structure, during tapping, 3 levogyration of processing part, thereby utilize the cutting edge of left-handed sword and the sword groove of 3 lateral surfaces of processing part to tap the machined part and make the internal thread, its inboard can produce the burr after the internal thread preparation is accomplished, tap reverse rotation withdraws from after tapping, reaming portion 5 dextrorotation, utilize the cutting edge of right-handed sword to strike off the burr, the machined part size that obtains accords with the standard, no burr.
Preferably, a transition area 6 is arranged between the tool shank 1 and the first connecting portion 2, the transition area 6 is in a circular truncated cone shape, and burrs can be formed on the edge of an opening of a tapped hole, so that the circular truncated cone-shaped transition area can be used for rotary grinding.
Preferably, a mounting portion 11 is further connected to an end of the shank 1 remote from the first connecting portion 2, and the tap can be mounted on the tapping device by using the mounting portion 11.
Preferably, in order to reduce the tapping resistance and improve the tapping efficiency, a tapered head 52 is connected to the end of the reaming portion 5 remote from the second connecting portion 4.
Preferably, the cross section of the second connecting portion 4 is circular, in order to improve the chip discharging efficiency in the tapping process, the outer diameter of the second connecting portion 4 is smaller than the outer diameters of the machined portion 3 and the reaming portion 5, the first chip discharging groove 31 and the second chip discharging groove 51 are communicated with the second connecting portion 4, and thus, a part of chips of tapping can be discharged from the second chip discharging groove 51 to the outer side of the second connecting portion 4 and then discharged from the first chip discharging groove 31.
The above embodiments only represent one embodiment of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. The utility model provides a screw tap of improvement screw thread, its characterized in that includes handle of a knife (1), first connecting portion (2), processing portion (3), second connecting portion (4), reaming portion (5), processing portion (3) lateral surface is equipped with the sword groove, processing portion (3) lateral surface still is equipped with first chip groove (31), reaming portion (5) lateral surface is the arc surface, reaming portion (5) lateral surface still is equipped with second chip groove (51), processing portion (3) are left-handed sword structure, reaming portion (5) are right-handed sword structure.
2. A thread forming tap according to claim 1, wherein a transition zone (6) is provided between said shank (1) and said first connection portion (2), said transition zone (6) being frustoconical.
3. A thread forming tap according to claim 1, wherein a mounting portion (11) is further connected to an end of the shank (1) remote from the first connection portion (2).
4. A thread forming tap according to claim 1, characterised in that a tapered head (52) is attached to the end of the reamer part (5) remote from the second connecting portion (4).
5. A thread forming tap according to claim 1, wherein said second connecting portion (4) is circular in cross-section, and the outer diameter of said second connecting portion (4) is smaller than the outer diameter of said machined portion (3) and said reaming portion (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921479293.0U CN210524046U (en) | 2019-09-06 | 2019-09-06 | Screw tap with improved threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921479293.0U CN210524046U (en) | 2019-09-06 | 2019-09-06 | Screw tap with improved threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210524046U true CN210524046U (en) | 2020-05-15 |
Family
ID=70604546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921479293.0U Active CN210524046U (en) | 2019-09-06 | 2019-09-06 | Screw tap with improved threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210524046U (en) |
-
2019
- 2019-09-06 CN CN201921479293.0U patent/CN210524046U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |