CN205237249U - Inclined to one side viscidity metal material product blind hole tapping screw tap - Google Patents
Inclined to one side viscidity metal material product blind hole tapping screw tap Download PDFInfo
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- CN205237249U CN205237249U CN201520940049.5U CN201520940049U CN205237249U CN 205237249 U CN205237249 U CN 205237249U CN 201520940049 U CN201520940049 U CN 201520940049U CN 205237249 U CN205237249 U CN 205237249U
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- screw tap
- blind hole
- metal material
- material product
- hole screw
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Abstract
The utility model provides a blind hole tapping screw tap of viscidity metal material product partially, includes cylindrical teper -shank and conical head, the conical head includes the cutting tip and is located the calibration part of cutting tip rear end, the conical head surface has the helicla flute by one end to other end extended processing, and the rotation angle of helicla flute is 22-24, and the cutting angle is 5-8, cutting tip length is 3.75-4.5mm. The utility model discloses a being 22-24 helicla flute at conical head surface machining rotation angle, having strengthened the chip removal ability, reduce the moment of torsion that the smear metal blockage produced in the chip pocket, prevent the screw tap rupture, beat the tooth, 22-24 helical angle design has simultaneously effectively changed the iron fillings flow direction, avoids iron fillings to locate winding, the smooth cutter chuck of hindering at the teper -shank. Setting up the cutting tip of screw tap into 3.75-4.5mm, reducing the friction torque between sword flank and finished surface, also avoided the direction part of screw tap to interfere with the drilling bottom outlet, 5-8 cutting angles have increased cutting edge intensity.
Description
Technical field
The utility model relates to a kind of cut tap, is specifically related to a kind of adherent metal material product blind hole screw tap for tapping partially.
Background technology
Screw tap is a kind of cutter of machining internal thread, can be divided into cut tap and thread forming tap by processing characteristics. The work of cut tapMake principle and by cutting way, workpiece is carried out to screw thread processing, i.e. tapping exactly. Tapping is the manufacturing procedure that belongs to more difficult,Because screw tap is almost embedded in workpiece and cuts, the machining load of its per tooth, all larger than other cutters, and screw tap edgeThe contact-making surface of screw thread and workpiece is large, must hold and scrap fallaway when cutting, therefore can say that screw tap is in very severe conditionLower work. For tapping is carried out smoothly, the selection of the structure of screw tap, the performance of workpiece material, cutting data is all most important.
Traditional inclined to one side viscosity steel product cost is low, but processability is poor, and especially the axis products blind hole tapping of this class material is coldBut, heat radiation, chip removal condition be poor, causes easily sticky cutter of material, it is low easily to there is fractureing, beat tooth, life-span in screw tap, the tool changing frequency is highEtc. problem, affect greatly crudy and the manufacturing schedule of product. According to statistics, conventionally at inclined to one side viscosity steel axis productsIn blind hole tapping process, every only 30 left and right of the processing quantity of screw tap.
Utility model content
The purpose of this utility model is for above-mentioned the problems of the prior art, and a kind of adherent metal material product blind hole is partially providedScrew tap for tapping, in the situation that not changing such materials processing performance, can make the edge strength of screw tap large, and iron filings are discharged abilityBy force, long service life, can effectively save the cost of charp tool.
To achieve these goals, the technical solution adopted in the utility model is: comprise cylindrical taper shank and conehead, conehead comprisesCutting tip and be positioned at the calibrated section of cutting tip rear end; There is spiral shell on described conehead surface by one end to other end deep processingSpin slot, the spiral fluted anglec of rotation is 22～24 °, cutting angle is 5～8 °; Described cutting tip length is 3.75～4.5mm.
Optimally, the spiral fluted anglec of rotation is 24 °.
Optimally, cutting angle is 6 °.
Optimally, the length of cutting tip is 3.75mm.
Described conehead length is 32mm, and the total length of taper shank and conehead is 125mm.
Described taper shank afterbody is processed with the prismatic parts for connecting driving arrangement.
The length of described prismatic parts is 13mm.
There are four identical helicla flutes on described conehead surface by one end to other end deep processing respectively.
Described cutting tip end face circular diameter is 14.4mm, and the diameter of taper shank is 12mm, conehead inside and four spiral flutedsThe tangent diameter of a circle of bottom land is 7.6mm.
Compared with prior art, the utlity model has following beneficial effect: by being 22～24 ° in the conehead Surface Machining anglec of rotationHelicla flute, strengthened chip removal ability. For the screw tap of inclined to one side adherent metal material, the anglec of rotation is too small, and smear metal meeting is blocked in holds bitsIn groove, produce larger moment of torsion, that even causes screw tap fractures, beats tooth; And the anglec of rotation is excessive, iron filings flow to not good, cannotEffectively discharge, be easily wound around sliding injury cutter chuck at handle of a knife place. Cutting tip length is set to 3.75～4.5mm, due to screw tapWhile processing inclined to one side adherent metal material, cutting tip length is too short, and taper lead angle is large, smear metal thickening, and Unit cutting force increases, cutterThe friction of flank also enlarges markedly, and friction torque increases thereupon, screw tap frangibility; And axle class blind hole screw tap for tapping, cutting portionDivide length long, easy and drilling bottom outlet is interfered. In addition, cutting angle is set to 5～8 °, and cutting angle is too large, too cutting edge of a knife or a swordProfit, can make cutting edge attenuation, is unfavorable for heat radiation, easily causes iron filings to glue cutter, and forms built-up edge, causes screw tap to burn cutter and beats tooth;Meanwhile, cutting angle is too large, and cutting edge is too weak, and edge strength is poor, also easily causes screw tap tipping; And screw tap cutting angle is too little,Sharp not, workpiece to be machined surface roughness is poor. The screw tap that the utility model has solved this cohesive material product tapping fractures,Beat tooth and random button problem, improved life of tap, by optimizing screw tap structural design, life of tap is processed work by every handle before30 left and right of part are increased to 140 left and right, have improved nearly 4 times, greatly reduce the tool changing frequency, have saved the cost of charp tool, singleThe cost of charp tool of part workpiece has reduced 58%, by 2.167 yuan every before improving, is reduced to 0.9 yuan every after improvement.
Brief description of the drawings
Fig. 1 overall structure schematic diagram of the present utility model;
Fig. 2 A-A of the present utility model cuts open structural representation;
In accompanying drawing: 1. conehead; 2. cylindrical taper shank; 3. helicla flute; 1-1. cutting tip; 1-2. calibrated section; 2-1. prismatic parts.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1, the utility model comprises cylindrical wire taper shank 2 and conehead 1, and conehead 1 comprises cutting tip 1-1 and is positioned atThe calibrated section 1-2 of cutting tip 1-1 rear end; There are four identical spiral shells on conehead 1 surface by one end to other end deep processing respectivelySpin slot 3, the anglec of rotation α of helicla flute 3 is 22～24 °, and cutting angle β is 5～8 °, and the length of cutting tip 1-1 is 3.75～4.5mm.The afterbody of taper shank 2 is processed with the prismatic parts 2-1 for connecting driving arrangement. Cutting tip 1-1 end face circular diameter is 14.4mm,The diameter of taper shank 2 is 12mm, and the conehead 1 tangent diameter of a circle of bottom land inner and four helicla flutes 3 is 7.6mm.
The course of work of the present utility model is:
1, by Cutting tool installation manner to cutter shaft, detect circular runout, ensure that circular runout is less than 0.02mm;
2, workpiece to be processed is installed, is ensured accurate work piece positioning, stable;
3, adjusting cutter and thread Pilot hole ensures coaxial;
4,, after cutter is adjusted, carry out normal process.
The screw tap that the utility model has solved the tapping of cohesive material product fractures, beats tooth and random button problem, the life-span of having improved screw tap,Greatly reduce the tool changing frequency, saved the cost of charp tool.
Claims (9)
1. an inclined to one side adherent metal material product blind hole screw tap for tapping, is characterized in that: comprise cylindrical taper shank (2) and conehead (1),Conehead (1) comprises cutting tip (1-1) and is positioned at the calibrated section (1-2) of cutting tip (1-1) rear end; Described coneThere is helicla flute (3) on head (1) surface by one end to other end deep processing, and the anglec of rotation (α) of helicla flute (3) is 22～24 °,Cutting angle (β) is 5～8 °; Described cutting tip (1-1) length is 3.75～4.5mm.
2. inclined to one side adherent metal material product blind hole screw tap for tapping according to claim 1, is characterized in that: described spiralThe anglec of rotation (α) of groove (3) is 24 °.
3. inclined to one side adherent metal material product blind hole screw tap for tapping according to claim 1, is characterized in that: described cuttingAngle (β) is 6 °.
4. inclined to one side adherent metal material product blind hole screw tap for tapping according to claim 1, is characterized in that: described cuttingPartly the length of (1-1) is 3.75mm.
5. according to the inclined to one side adherent metal material product blind hole screw tap for tapping described in claim 1 or 4, it is characterized in that: describedConehead (1) length is 32mm, and the total length of taper shank (2) and conehead (1) is 125mm.
6. inclined to one side adherent metal material product blind hole screw tap for tapping according to claim 1, is characterized in that: described taper shank (2)Afterbody is processed with the prismatic parts (2-1) for connecting driving arrangement.
7. inclined to one side adherent metal material product blind hole screw tap for tapping according to claim 6, is characterized in that: described prism portionDividing the length of (2-1) is 13mm.
8. inclined to one side adherent metal material product blind hole screw tap for tapping according to claim 1, is characterized in that: described conehead (1)There are four identical helicla flutes (3) on surface by one end to other end deep processing respectively.
9. inclined to one side adherent metal material product blind hole screw tap for tapping according to claim 1, is characterized in that: described cuttingPartly (1-1) end face circular diameter is 14.4mm, and the diameter of taper shank (2) is 12mm, conehead (1) inside and four spiralsThe tangent diameter of a circle of bottom land of groove (3) is 7.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520940049.5U CN205237249U (en) | 2015-11-23 | 2015-11-23 | Inclined to one side viscidity metal material product blind hole tapping screw tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520940049.5U CN205237249U (en) | 2015-11-23 | 2015-11-23 | Inclined to one side viscidity metal material product blind hole tapping screw tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205237249U true CN205237249U (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520940049.5U Active CN205237249U (en) | 2015-11-23 | 2015-11-23 | Inclined to one side viscidity metal material product blind hole tapping screw tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205237249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524676A (en) * | 2016-06-21 | 2017-12-29 | 世铠精密股份有限公司 | Using the fixing means for making tooth part |
-
2015
- 2015-11-23 CN CN201520940049.5U patent/CN205237249U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524676A (en) * | 2016-06-21 | 2017-12-29 | 世铠精密股份有限公司 | Using the fixing means for making tooth part |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |