CN201279637Y - Forked square screw broaching tap - Google Patents
Forked square screw broaching tap Download PDFInfo
- Publication number
- CN201279637Y CN201279637Y CNU2008201410408U CN200820141040U CN201279637Y CN 201279637 Y CN201279637 Y CN 201279637Y CN U2008201410408 U CNU2008201410408 U CN U2008201410408U CN 200820141040 U CN200820141040 U CN 200820141040U CN 201279637 Y CN201279637 Y CN 201279637Y
- Authority
- CN
- China
- Prior art keywords
- cutting
- tap
- cutting tip
- cutting part
- broaching
- 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 discloses a divided and square toothed thread broaching tap. The tap consists of a cutting part A, a cutting part B and a cutting part C, and the three parts are provided with completely different profiles but are correlated; wherein, an insection of the cutting part A is in the shape of a triangle; an insection of the cutting part B is in the shape of a ladder; an insection of the cutting part C is in the shape of a rectangle; the front ends of the three cutting parts A, B and C are all taper-shaped and are provided with ring gettering grooves (1); the cutter tooth pitches of the three cutting parts A, B and C are the same, and the three cutting parts are uniformly communicated with each other; and a chip pocket (2) is in the shape of a straight channel or a spiral groove. The tap has the beneficial effects that as dividing, segmenting and fractal cutting are adopted, the length of a cutter body is shorter than a similar traditional broaching thread tap, the production cost of the cutter is correspondingly reduced, the stroke of a manufactured work piece is shortened, the production time per piece is reduced, and the production efficiency is effectively improved.
Description
Technical field
The utility model relates to a kind of screw tool, particularly a kind of minute tooth square thread broaching tap.
Background technology
What adopt in producing usually is traditional whole square thread broaching tap, its cutting tool shape nearly all is a rectangle, each thread groove is also all finished by rectangular teeth all along, work in-process makes cutting surface strengthen because workpiece all contacts with the cutting teeth blade like this, and cutting resistance increases, the cutter radiating condition is bad, tool wear is accelerated, and causes cutting surface of poor quality, and stock-removing efficiency reduces.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of minute tooth square thread broaching tap is provided, and to improve form of thread surface quality, enhances productivity and durability.
The purpose of this utility model is achieved through the following technical solutions: divide tooth square thread broaching tap, it is characterized in that: it adopts the complete difference of three sections profiles of tooth but the cutting tip A that is mutually related, cutting tip B and cutting tip C constitute, wherein, the groove of cutting tip A is a triangle, the groove of cutting tip B is trapezoidal, the groove of cutting tip C is a rectangle, A, B, three sections cutting tip front ends of C all are tapering shape and are provided with the annular groove of cooling down, A, B, the identical and consistent perforation of three sections cutting tip cutters tooth of C pitch, chip pocket is straight trough or helicla flute.
Tooth square thread broaching tap design cutting step divided roughing, semifinishing and fine finishining three parts to finish in described in the utility model minute.
First's cutter tooth is roughing, most of surplus of leg-of-mutton cutter tooth excision workpiece screw thread flute profile, and process both sides, workpiece form of thread top chamfered part.As required, this chamfering also can be designed to arc transition.
The trapezoidal cutter tooth of second portion semifinishing is further removed screw thread flute profile periphery surplus, and the thread form of square thread roughly is shaped, and stays suitable allowance for finish according to the characteristic of workpiece material.
The accurately machined rectangular teeth of third part processes the complete profile of tooth of square thread.
The tapering profile of each cutting tip front end of described in the utility model minute tooth square thread broaching tap and the annular groove of cooling down, strengthened chip space, make chip removal smooth and easy, iron filings are difficult for squeezing hinders and wounded manufactured thread surface, cutting fluid also can flow into smoothly, fully play lubricated and cooling effect, thereby improved the crudy of surface of the work.
The profile of the cutting teeth of described in the utility model minute tooth square thread broaching tap is by triangle, trapezoidal, rectangle is formed, finish branch tooth, segmentation, fractal cutting, process cutting resistance and reduce, cut brisk square thread, cutting speed improves, add that workpiece heat radiation and chip removal are good, the durability of cutter is improved, and prolong cutter life.Production cost reduces, and production efficiency is improved.
The beneficial effects of the utility model are: divide tooth, segmentation, fractal cutting owing to adopt, cutter hub length will be lacked with quasi-tradition broaching thread tap, the corresponding reduction of cutter production cost, and the stroke of processing work shortens, production time per piece reduces, and production efficiency effectively improves.
Description of drawings
Fig. 1 divides the structural representation of tooth square thread broaching tap
Fig. 2 divides the cutting teeth shape schematic diagram of tooth square thread broaching tap
Fig. 2-A triangle groove
The trapezoidal groove of Fig. 2-B
Fig. 2-C rectangle groove
Among the figure, A-cutting tip A, B-cutting tip B, C-cutting tip C.
The specific embodiment
Further describe the technical solution of the utility model below in conjunction with accompanying drawing: as Fig. 1 and Fig. 2, divide tooth square thread broaching tap, it adopts the complete difference of three sections profiles of tooth but the cutting tip A that is mutually related, cutting tip B and cutting tip C constitute, wherein, the groove of cutting tip A is a triangle, the groove of cutting tip B is trapezoidal, the groove of cutting tip C is a rectangle, A, B, three sections cutting tip front ends of C all are tapering shape and are provided with the annular groove 1 of cooling down, A, B, the identical and consistent perforation of three sections cutting tip cutters tooth of C pitch, chip pocket 2 is straight trough or helicla flute.
Claims (1)
1, divides tooth square thread broaching tap, it is characterized in that: it adopts the complete difference of three sections profiles of tooth but the cutting tip A that is mutually related, cutting tip B and cutting tip C constitute, wherein, the groove of cutting tip A is a triangle, the groove of cutting tip B is trapezoidal, the groove of cutting tip C is a rectangle, A, B, three sections cutting tip front ends of C all are tapering shape and are provided with the annular groove (1) of cooling down, A, B, the identical and consistent perforation of three sections cutting tip cutters tooth of C pitch, chip pocket (2) is straight trough or helicla flute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201410408U CN201279637Y (en) | 2008-10-30 | 2008-10-30 | Forked square screw broaching tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201410408U CN201279637Y (en) | 2008-10-30 | 2008-10-30 | Forked square screw broaching tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201279637Y true CN201279637Y (en) | 2009-07-29 |
Family
ID=40926525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201410408U Expired - Fee Related CN201279637Y (en) | 2008-10-30 | 2008-10-30 | Forked square screw broaching tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201279637Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581391A (en) * | 2012-02-29 | 2012-07-18 | 中国铁道科学研究院机车车辆研究所 | Machining method for multi-step threads of disc brake caliper for rail transit vehicle |
| CN102922328A (en) * | 2012-11-06 | 2013-02-13 | 张家港国隆机电五金有限公司 | Fixing clamp in lock cylinder groove broacher |
| CN102922327A (en) * | 2012-11-06 | 2013-02-13 | 张家港国隆机电五金有限公司 | Fixing clamp in lock cylinder groove broacher |
| CN103008800A (en) * | 2012-12-12 | 2013-04-03 | 锑玛(苏州)精密工具有限公司 | Sectional tap |
| CN104107962A (en) * | 2013-04-19 | 2014-10-22 | 苏州文鼎模具有限公司 | Stepped screw tap |
-
2008
- 2008-10-30 CN CNU2008201410408U patent/CN201279637Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581391A (en) * | 2012-02-29 | 2012-07-18 | 中国铁道科学研究院机车车辆研究所 | Machining method for multi-step threads of disc brake caliper for rail transit vehicle |
| CN102922328A (en) * | 2012-11-06 | 2013-02-13 | 张家港国隆机电五金有限公司 | Fixing clamp in lock cylinder groove broacher |
| CN102922327A (en) * | 2012-11-06 | 2013-02-13 | 张家港国隆机电五金有限公司 | Fixing clamp in lock cylinder groove broacher |
| CN103008800A (en) * | 2012-12-12 | 2013-04-03 | 锑玛(苏州)精密工具有限公司 | Sectional tap |
| CN104107962A (en) * | 2013-04-19 | 2014-10-22 | 苏州文鼎模具有限公司 | Stepped screw tap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20141030 |
|
| EXPY | Termination of patent right or utility model |