CN104526088A - Hard alloy steel step screw tap - Google Patents
Hard alloy steel step screw tap Download PDFInfo
- Publication number
- CN104526088A CN104526088A CN201410792219.XA CN201410792219A CN104526088A CN 104526088 A CN104526088 A CN 104526088A CN 201410792219 A CN201410792219 A CN 201410792219A CN 104526088 A CN104526088 A CN 104526088A
- Authority
- CN
- China
- Prior art keywords
- screw tap
- alloy steel
- hard alloy
- operate portions
- steel ladder
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G5/00—Thread-cutting tools; Die-heads
- B23G5/02—Thread-cutting tools; Die-heads without means for adjustment
- B23G5/06—Taps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2200/00—Details of threading tools
- B23G2200/34—Tools having an increasing diameter in the direction of the shank from the tip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2225/00—Materials of threading tools, workpieces or other structural elements
- B23G2225/28—Hard metal, i.e. cemented carbides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
- Powder Metallurgy (AREA)
Abstract
A hard alloy steel step screw tap comprises a handle part and work parts, and is characterized in that the work parts include the first work part and the second work part, and the nominal diameter of the first work part is smaller than that of the second work part. By means of the hard alloy steel step screw tap, step holes can be machined and formed at a time, concentricity of the step holes is guaranteed, and meanwhile machining efficiency is improved.
Description
Technical field
The design relates to a kind of hard alloy steel ladder screw tap, belongs to machining technique field.
Background technology
In the processing of stepped bolt holes, often adopt the method for processing respectively, this structural approach, although there is the simple advantage of processing, the concentricity of two bolts hole often can not be guaranteed, and meanwhile, working (machining) efficiency is also lower.
Summary of the invention
For the deficiencies in the prior art, the object of the design is to provide a kind of hard alloy steel ladder screw tap, and the shaping shoulder hole of time processing, not only ensure that the concentricity of shoulder hole, improve working (machining) efficiency simultaneously.
For achieving the above object, the design is realized by following technological means:
A kind of hard alloy steel ladder screw tap, comprise shank and operate portions, it is characterized in that: described operate portions comprises the first operate portions and the second operate portions, the nominal diameter of described first operate portions is less than the second operate portions nominal diameter.
Further:
Described a kind of hard alloy steel ladder screw tap, is characterized in that: described a kind of hard alloy steel ladder screw tap is dextrorotation screw tap.
Described a kind of hard alloy steel ladder screw tap, is characterized in that: described a kind of hard alloy steel ladder screw tap is fine thread tap.
Described a kind of hard alloy steel ladder screw tap, is characterized in that: the nominal diameter of described first operate portions is 4/5ths of the second operate portions nominal diameter.
Described a kind of hard alloy steel ladder screw tap, is characterized in that: the length of described first operate portions and the second operate portions is respectively 3 times of shank length.
Described a kind of hard alloy steel ladder screw tap, is characterized in that: the material of described a kind of hard alloy steel ladder screw tap take tungsten-carbide powder as matrix, makes binding agent form through pressurization, sintering with cobalt powder.
The invention has the beneficial effects as follows: the design provides a kind of hard alloy steel ladder screw tap, can the shaping shoulder hole of time processing, not only ensure that the concentricity of shoulder hole, improve working (machining) efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 is the design's structural representation.
Detailed description of the invention
Below in conjunction with Figure of description, design is further described.
A kind of hard alloy steel ladder screw tap, comprise shank 3 and operate portions, it is characterized in that: described operate portions comprises the first operate portions 1 and the second operate portions 2, the nominal diameter of described first operate portions 1 is less than the second operate portions 2 nominal diameter.
Further:
Described a kind of hard alloy steel ladder screw tap, is characterized in that: described a kind of hard alloy steel ladder screw tap is dextrorotation screw tap.
Described a kind of hard alloy steel ladder screw tap, is characterized in that: described a kind of hard alloy steel ladder screw tap is fine thread tap.
Described a kind of hard alloy steel ladder screw tap, is characterized in that: the nominal diameter of described first operate portions 1 is 4/5ths of the second operate portions 2 nominal diameter.
Described a kind of hard alloy steel ladder screw tap, is characterized in that: the length of described first operate portions 1 and the second operate portions 2 is respectively 3 times of shank length.
Described a kind of hard alloy steel ladder screw tap, is characterized in that: the material of described a kind of hard alloy steel ladder screw tap take tungsten-carbide powder as matrix, makes binding agent form through pressurization, sintering with cobalt powder.
More than show and describe the general principle of the design, principal character and advantage.The technical staff of the industry should understand; the design is not restricted to the described embodiments; the principle that the design is just described described in above-described embodiment and description; under the prerequisite not departing from the design's spirit and scope; the design also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the design.The claimed scope of the design is defined by appending claims and equivalent thereof.
Claims (6)
1. a hard alloy steel ladder screw tap, comprises shank and operate portions, it is characterized in that: described operate portions comprises the first operate portions and the second operate portions, and the nominal diameter of described first operate portions is less than the second operate portions nominal diameter.
2. a kind of hard alloy steel ladder screw tap as claimed in claim 1, is characterized in that: described a kind of hard alloy steel ladder screw tap is dextrorotation screw tap.
3. a kind of hard alloy steel ladder screw tap as claimed in claim 1, is characterized in that: described a kind of hard alloy steel ladder screw tap is fine thread tap.
4. a kind of hard alloy steel ladder screw tap as claimed in claim 1, is characterized in that: the nominal diameter of described first operate portions is 4/5ths of the second operate portions nominal diameter.
5. a kind of hard alloy steel ladder screw tap as claimed in claim 1, is characterized in that: the length of described first operate portions and the second operate portions is respectively 3 times of shank length.
6. a kind of hard alloy steel ladder screw tap as claimed in claim 1, is characterized in that: the material of described a kind of hard alloy steel ladder screw tap take tungsten-carbide powder as matrix, makes binding agent form through pressurization, sintering with cobalt powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792219.XA CN104526088A (en) | 2014-12-19 | 2014-12-19 | Hard alloy steel step screw tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792219.XA CN104526088A (en) | 2014-12-19 | 2014-12-19 | Hard alloy steel step screw tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104526088A true CN104526088A (en) | 2015-04-22 |
Family
ID=52841818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410792219.XA Pending CN104526088A (en) | 2014-12-19 | 2014-12-19 | Hard alloy steel step screw tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104526088A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10061476A1 (en) * | 2000-12-08 | 2002-06-13 | Voelkel Gmbh | Thread drill for forming larger diameter threading in bored holes in workpieces, comprises drive journal, threaded head and threaded drill section |
| CN101534982A (en) * | 2006-10-18 | 2009-09-16 | 钴碳化钨硬质合金公司 | Cutting tap and method of making a cutting tap |
| CN203843318U (en) * | 2014-04-16 | 2014-09-24 | 浙江嘉丞机械有限公司 | Self-tapping device for screw |
| CN104107962A (en) * | 2013-04-19 | 2014-10-22 | 苏州文鼎模具有限公司 | Stepped screw tap |
| CN203944951U (en) * | 2014-07-23 | 2014-11-19 | 锑玛(苏州)精密工具有限公司 | One species stage screw tap |
| CN204397098U (en) * | 2014-12-19 | 2015-06-17 | 苏州用朴合金工具有限公司 | A kind of hard alloy steel ladder screw tap |
-
2014
- 2014-12-19 CN CN201410792219.XA patent/CN104526088A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10061476A1 (en) * | 2000-12-08 | 2002-06-13 | Voelkel Gmbh | Thread drill for forming larger diameter threading in bored holes in workpieces, comprises drive journal, threaded head and threaded drill section |
| CN101534982A (en) * | 2006-10-18 | 2009-09-16 | 钴碳化钨硬质合金公司 | Cutting tap and method of making a cutting tap |
| CN104107962A (en) * | 2013-04-19 | 2014-10-22 | 苏州文鼎模具有限公司 | Stepped screw tap |
| CN203843318U (en) * | 2014-04-16 | 2014-09-24 | 浙江嘉丞机械有限公司 | Self-tapping device for screw |
| CN203944951U (en) * | 2014-07-23 | 2014-11-19 | 锑玛(苏州)精密工具有限公司 | One species stage screw tap |
| CN204397098U (en) * | 2014-12-19 | 2015-06-17 | 苏州用朴合金工具有限公司 | A kind of hard alloy steel ladder screw tap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |
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| RJ01 | Rejection of invention patent application after publication |