CN207139037U - A kind of screw tap cutter - Google Patents
A kind of screw tap cutter Download PDFInfo
- Publication number
- CN207139037U CN207139037U CN201720836898.5U CN201720836898U CN207139037U CN 207139037 U CN207139037 U CN 207139037U CN 201720836898 U CN201720836898 U CN 201720836898U CN 207139037 U CN207139037 U CN 207139037U
- Authority
- CN
- China
- Prior art keywords
- cutter head
- straight sword
- cutter
- knife
- handle
- 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 refers in particular to a kind of screw tap cutter, belong to machining tool technical field, including handle of a knife and cutter head, the handle of a knife and cutter head are cylindrical structure, stopper slot is laterally provided with the handle of a knife side, wherein, the straight sword of four equidistant strips is provided with the arcuate flanks of the cutter head, one side of the straight sword away from the cutter head is arc surface, the arc surface of the straight sword is provided with screw thread, four discharge launders for being used to drain the arcuate structure of waste material at equal intervals are further opened with the side of the cutter head, the wherein side of the discharge launder upper surface is located on the side of the straight sword, side of the opposite side away from the adjacent straight sword, so that it is arranged at intervals between the two adjacent straight swords by the discharge launder and raised part cutter head of spill.The utility model is simple and practical, and machining accuracy and processing efficiency are higher, there will not be very big abrasion when processing more coarse workpiece, improves cutting-tool's used life.
Description
Technical field
The utility model belongs to machining tool technical field, refers in particular to a kind of screw tap cutter.
Background technology
Screw tap is also known as screw tap, and screw tap is a kind of cutter of most important machining internal thread.Some existing screw taps are in through hole
During upper processing screw thread, built-in length during screw tap is compressed due to screw, can not ensure that screw tap rotates coaxially with tapping head,
Screw tap or so swings, and causes tooth position eccentric or crosses to cut, influence machining accuracy.Meanwhile swivel nut locking force hour, screw tap often occurs
The idle running situation that tap holder continues rotation is not transferred in holding, causes to process bad；When locking force is big, elongated screw tap is easy
Fracture, then man-hour, increase cost is lost.When through-hole surfaces are excessively coarse, screw tap abrasion is also more serious.
The content of the invention
The purpose of this utility model is to provide a kind of screw tap cutter for reducing abrasion, improving processing efficiency.
What the purpose of this utility model was realized in：A kind of screw tap cutter, including handle of a knife and cutter head, the handle of a knife and knife
Head is cylindrical structure, is laterally provided with stopper slot on the handle of a knife side, prevents from sliding during its work, wherein, described
The arcuate flanks of cutter head are provided with the straight sword of four equidistant strips, when rotating, uniformly act in workpieces processing,
Machining accuracy is improved, the cutter head and the straight sword are structure as a whole, and the left and right sides area of the straight sword is identical and mutual
Parallel, its one side away from the cutter head is arc surface, and the arc surface of the straight sword is provided with screw thread, on the side of the cutter head
It is further opened with four discharge launders for being used to drain the arcuate structure of waste material at equal intervals, the wherein side of the discharge launder upper surface
On the side of the straight sword, side of the opposite side away from the adjacent straight sword so that lead between the two adjacent straight swords
The discharge launder and raised part cutter head for crossing spill are arranged at intervals, and work in-process causes cutter head not allow easy fracture, enhances cutter head
Toughness.
A kind of screw tap cutter mentioned above, wherein, the discharge launder and one end to axis of the straight sword intersection
Distance be less than the cutter head radius, to increase the capacity of discharge launder.
A kind of screw tap cutter mentioned above, wherein, side institute of the discharge launder upper surface away from the straight sword side
Plane be the two adjacent straight swords the plane of symmetry.
A kind of screw tap cutter mentioned above, wherein, the head of the straight sword is higher by the head of the cutter head, described straight
The head of sword is provided with inclined-plane, and its one end away from the cutter head axis is located on the arc surface of the straight sword, can be to workpiece
Through-hole surfaces be first processed, prevent the screw thread in straight sword from, in tapping on rougher workpiece, occurring more serious
Abrasion.
A kind of screw tap cutter mentioned above, wherein, the diameter of the handle of a knife is slightly larger than the radius of the cutter head, the knife
Chamfering is equipped with the side end face of handle and the side end face of the cutter head.
A kind of screw tap cutter mentioned above, wherein, the handle of a knife and cutter head are split-type structural, and the cutter head is hard
Made of alloy, increase its hardness, to reduce abrasion.
The utility model is prominent and beneficial compared with prior art to be had the technical effect that：The utility model is simple and practical,
Internal thread easy to process, slide system, and machining accuracy and processing efficiency are higher, there will not be when processing more coarse workpiece
Very big abrasion, improves cutting-tool's used life.
Brief description of the drawings
Fig. 1 is main structure diagram of the present utility model；
Fig. 2 is left view structural representation of the present utility model；
Fig. 3 is right side structural representation of the present utility model；
In figure：1- handle of a knifes；2- cutter heads；3- stopper slots；4- straight swords；5- arc surfaces；6- discharge launders；7- inclined-planes；8- chamferings.
Embodiment
The utility model is further described with specific embodiment below in conjunction with the accompanying drawings, referring to Fig. 1-3：A kind of screw tap
Cutter, including handle of a knife 1 and cutter head 2, the handle of a knife 1 and cutter head 2 are cylindrical structure, and limit is laterally provided with the side of handle of a knife 1
Position groove 3, prevents from sliding during its work, wherein, four equidistant strips are provided with the arcuate flanks of the cutter head 2
Straight sword 4, when rotating, uniformly act in workpieces processing, improve machining accuracy, the cutter head 2 and the straight sword 4 are one
Body structure, the left and right sides area of the straight sword 4 is identical and is parallel to each other, and its one side away from the cutter head 2 is arc surface
5, the arc surface 5 of the straight sword 4 is provided with screw thread, and four are further opened with the side of the cutter head 2 and is used to drain at equal intervals
The discharge launder 6 of the arcuate structure of waste material, the wherein side of the upper surface of discharge launder 6 is located on the side of the straight sword 4, another
Side of the side away from the adjacent straight sword 4 so that pass through the discharge launder 6 and projection of spill between the two adjacent straight swords 4
Part cutter head 2 is arranged at intervals, and work in-process causes cutter head 2 not allow easy fracture, enhances the toughness of cutter head 2.
Further, wherein, the discharge launder 6 and the distance of one end to the axis of the intersection of straight sword 4 are less than institute
The radius of cutter head 2 is stated, to increase the capacity of discharge launder 6.
Further, wherein, the plane where side of the upper surface of discharge launder 6 away from the side of straight sword 4 is two
The plane of symmetry of the adjacent straight sword 4.
Further, wherein, the head of the straight sword 4 is higher by the head of the cutter head 2, on the head of the straight sword 4
Provided with inclined-plane 7, its one end away from the axis of cutter head 2 is located on the arc surface 5 of the straight sword 4, can be to the through hole of workpiece
Surface is first processed, and prevents the screw thread in straight sword 4 from, in tapping on rougher workpiece, more serious abrasion occur.
Further, wherein, the diameter of the handle of a knife 1 is slightly larger than the radius of the cutter head 2, the side end face of the handle of a knife 1
Chamfering 8 is equipped with the side end face of the cutter head 2.
Further, wherein, the handle of a knife 1 and cutter head 2 are split-type structural, and the cutter head 1 is made of hard alloy,
Increase its hardness, to reduce abrasion.
Above-described embodiment is only preferred embodiment of the present utility model, not limits protection model of the present utility model according to this
Enclose, therefore：All equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by protection of the present utility model
Within the scope of.
Claims (6)
1. a kind of screw tap cutter, including handle of a knife and cutter head, the handle of a knife and cutter head are cylindrical structure, horizontal on the handle of a knife side
To being provided with stopper slot, it is characterised in that：The straight sword of four equidistant strips, institute are provided with the arcuate flanks of the cutter head
State cutter head and the straight sword is structure as a whole, the left and right sides area of the straight sword is identical and is parallel to each other, and it is away from described
The one side of cutter head is arc surface, and the arc surface of the straight sword is provided with screw thread, four etc. are further opened with the side of the cutter head
The discharge launder for being used to drain the arcuate structure of waste material of spacing, the wherein side of the discharge launder upper surface is located at the straight sword
On side, side of the opposite side away from the adjacent straight sword so that pass through the discharge launder of spill between the two adjacent straight swords
It is arranged at intervals with the part cutter head of projection.
A kind of 2. screw tap cutter according to claim 1, it is characterised in that：The discharge launder and the straight sword intersection
The distance of one end to axis is less than the radius of the cutter head.
A kind of 3. screw tap cutter according to claim 1 or 2, it is characterised in that：The discharge launder upper surface is away from described
Plane where the side of straight sword side is the plane of symmetry of the two adjacent straight swords.
A kind of 4. screw tap cutter according to claim 1, it is characterised in that：The head of the straight sword is higher by the cutter head
Head, inclined-plane is provided with the head of the straight sword, its one end away from the cutter head axis is located at the circular arc of the straight sword
On face.
A kind of 5. screw tap cutter according to claim 1, it is characterised in that：The diameter of the handle of a knife is slightly larger than the cutter head
Radius, be equipped with chamfering on the side end face of the side end face of the handle of a knife and the cutter head.
A kind of 6. screw tap cutter according to claim 1, it is characterised in that：The handle of a knife and cutter head are split-type structural,
The cutter head is made of hard alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720836898.5U CN207139037U (en) | 2017-07-11 | 2017-07-11 | A kind of screw tap cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720836898.5U CN207139037U (en) | 2017-07-11 | 2017-07-11 | A kind of screw tap cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207139037U true CN207139037U (en) | 2018-03-27 |
Family
ID=61675057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720836898.5U Expired - Fee Related CN207139037U (en) | 2017-07-11 | 2017-07-11 | A kind of screw tap cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207139037U (en) |
-
2017
- 2017-07-11 CN CN201720836898.5U patent/CN207139037U/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: 20180327 Termination date: 20190711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |