CN2136094Y - Cutting and extruding tap - Google Patents
Cutting and extruding tap Download PDFInfo
- Publication number
- CN2136094Y CN2136094Y CN 92223221 CN92223221U CN2136094Y CN 2136094 Y CN2136094 Y CN 2136094Y CN 92223221 CN92223221 CN 92223221 CN 92223221 U CN92223221 U CN 92223221U CN 2136094 Y CN2136094 Y CN 2136094Y
- Authority
- CN
- China
- Prior art keywords
- cutting
- screw tap
- extruding
- groove
- working portion
- 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 relates to a cutting and extruding tap, which is a combined tap with high intensity and high-accuracy by combining cutting and extruding. When the cutting and extruding tap is used, screw threads are cut out by cutting teeth, and the surfaces of the screw threads are burnished by extruding teeth. The utility model has the advantages that the torque is small when the cutting and extruding tap is used, the surfaces of the processed screw threads have no burr, the precision is high, the surface hardness, the abrasive resistance and the intensity are increased after that the surfaces of the screw threads are extruded, the productive efficiency is high, the durability is high, and the cutting and extruding tap is particularly suitable for the ductile material.
Description
The utility model relates to a kind of instrument of machining internal thread, say so more specifically a kind of cutting with push that the high strength that combines is high-precision cuts crowded screw tap.
The kind of screw tap is a lot.By technical spirit recently like prior art be to go up the crowded combined tap and drill of introducing in " transformation of thread forming tap " literary composition of cutting " mechanical technology teacher " 1988 the tenth phases, its design feature is that each sword of this screw tap distinguishes that cutting tooth and extruding tooth are all arranged, extruding force was little when this screw tap was worked, the no burr of screw thread performance that processes, but cutting tooth and extruding tooth are all arranged because each sword is distinguished, make relatively difficulty of this screw tap manufacturing, and screw tap is with reconditioning again after pure, cost is higher.
The purpose of this utility model is for a kind of deficiency that can solve above-mentioned screw tap is provided, and can prevent the crowded screw tap of cutting that working portion fractures.
The utility model is to realize like this, the utility model comprises working portion (1) and shank (2), working portion (1) is made up of cutting cone (3) and extruding and calibrated section (4), cutting cone (3) is provided with short groove (5) of cutting and cutting tooth (6), extruding is provided with elongated slot (7) and rib ridge (8) with calibrated section (4), and rib ridge (8) is provided with extruding tooth (9).Cutting tooth (6) cuts out screw thread earlier when work, then by extruding tooth (9) burnishing-in thread surface, thereby obtains high-quality internal thread.
Elongated slot in the utility model (7) is a broad sense, elongated slot (7) can be planar slot (as Fig. 3), concave groove (as Fig. 4) or convex surface groove (as Fig. 5), the span of locating anterior angle at extruding tooth (9) is between-90 degree are spent to 0 (that is to say no anterior angle), and elongated slot (7) is straight trough, skewed slot or helicla flute.
Rib ridge (8) in the utility model is the high point of extruding and calibrated section (4) cross-sectional profile.Rib ridge (8) be to the screw thread of screw tap outer through or middle footpath carry out forming behind the relief grinding, perhaps the relief grinding screw thread is not to be formed by adjacent two elongated slots (7).
The short groove of cutting of the present utility model (5) is straight trough, skewed slot or helicla flute.The span of locating anterior angle at cutting tooth (6) is between 0 degree is spent to 45 (having that is to say anterior angle).The short groove of cutting (5) has spiral shell wedge angle (10) or inclination angle (11).
Anterior angle＞0 that cutting cone path of the present utility model (12) (end diameter) is located, anterior angle≤0 that the big footpath of cutting cone (13) is located.
Shank of the present utility model (2) is provided with transmission side (16) and at least one ring-type safety groove (14).The grooved of safety groove (14) generally is the circular arc or the point end, is preferably identically with form of thread, and preferably the bottom wedge angle is less than the angle of form of thread.Between safety groove (14) and working portion (1), be provided with transmission flat (15) or transmission side (16).Transmission flat (15) between safety groove (14) and the working portion (1) or transmission side (16) can prolong the back with elongated slot (7) and form.The metallographic structure state that safety groove (14) is located is identical with metallographic structure state and hardness that hardness and working portion (1) are located.When making that when being stuck in the process of screw tap at processing parts of band safety groove (14) moment of torsion is excessive, break in the screwed hole in order to prevent screw tap working portion (1), screw tap just twists off from safety groove (14), utilize transmission flat (15) or transmission side (16) between safety groove (14) and the working portion (1) that screw tap is withdrawed from from the screwed hole of part then, thereby make the screwed hole on the part excellent.
Moment of torsion was little when advantage of the present utility model was work, and the thread surface that processes does not have burr, the precision height, and thread surface is through after pushing, and case hardness and wearability and intensity all increase.And production efficiency height, durability height are specially adapted to machine ductile material.Because cutting tooth (6) and extruding tooth (9) separate, manufacturing and reconditioning are all more convenient easily like this.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the utility model structural representation
Fig. 2 is the cross-sectional schematic that the utility model short groove of cutting (5) is provided with inclination angle (11).
Fig. 3 is the cross section view of the utility model elongated slot (7) time extruding and calibrated section (4) for planar slot.
Fig. 4 is the cross section view of the utility model elongated slot (7) time extruding and calibrated section (4) for concave groove.
The cross section view of extruding and calibrated section (4) when Fig. 5 is the utility model elongated slot (7) for the convex surface groove.
Fig. 6 is the schematic diagram that the utility model short groove of cutting (5) is provided with spiral shell wedge angle (10).
Fig. 7 is the utility model is provided with transmission side (16) between safety groove (14) and working portion (1) shank (a 2) schematic diagram.
Fig. 8 is the utility model is provided with transmission flat (15) between safety groove (14) and working portion (1) shank (a 2) schematic diagram.
The explanation of each sequence number among the above figure:
(1) working portion, (2) shank, (3) cutting cone, (4) extruding and calibrated section, the short groove of (5) cutting, (6) cutting tooth, (7) elongated slot, (8) rib ridge, (9) extruding tooth, (10) spiral shell wedge angle, (11) inclination angle, (12) cutting cone path, the big footpath of (13) cutting cone, (14) safety groove, flat, (16) the transmission side of (15) transmission.
Embodiment one: the utility model comprises working portion (1) and shank (2), working portion (1) is made up of cutting cone (3) and extruding and calibrated section (4), cutting cone (3) is provided with short groove (5) of cutting and cutting tooth (6), extruding is provided with elongated slot (7) and rib ridge (8) with calibrated section (4), rib ridge (8) is provided with extruding tooth (9), and transmission side (16) is arranged on the shank (2).Cutting tooth (6) cuts out screw thread earlier when work, then by extruding tooth (9) burnishing-in thread surface, thereby obtains high-quality internal thread.
Embodiment two: the short groove of cutting of the present utility model (5) is a skewed slot, inclination angle (11) and spiral shell wedge angle (10) are arranged, anterior angle＞the 0(that locates at cutting cone path (12) has anterior angle), anterior angle≤0(that the big footpath of cutting cone (13) is located does not have anterior angle), on shank (2), be provided with a ring-type safety groove (14), be provided with transmission side (16) between safety groove (14) and working portion (1), other parts are identical with embodiment one.When making that when being stuck in the process of this screw tap at processing parts moment of torsion is excessive, break in the screwed hole in order to prevent screw tap working portion (1), screw tap just twists off from safety groove (14), utilize the transmission side (16) between safety groove (14) and the working portion (1) that screw tap is withdrawed from from the screwed hole of part then, thereby make the screwed hole on the part excellent.
Except the above example that these were described especially, the utility model described herein also can be made and being changed and distortion, can be concave groove as the flute profile of elongated slot (7), and the short groove of cutting (5) can be a straight trough.Be appreciated that the utility model comprises that all that has fallen into the variation and the distortion of spirit and scope of the present utility model.
Claims (10)
1, a kind of cutting squeezed screw tap and comprised working portion (1) and shank (2), it is characterized in that working portion (1) is made up of cutting cone (3) and extruding and calibrated section (4), cutting cone (3) is provided with short groove (5) of cutting and cutting tooth (6), extruding is provided with elongated slot (7) and rib ridge (8) with calibrated section (4), and rib ridge (8) is provided with extruding tooth (9).
2, cut crowded screw tap by claim 1 is described, it is characterized in that elongated slot (7) is planar slot or concave groove or convex surface groove, the span of locating anterior angle at extruding tooth (9) at-90 degree between 0 degree,
3, cut crowded screw tap by claim 1 is described, it is characterized in that rib ridge (8) is extruding and the high point of calibrated section (4) cross-sectional profile.
4, cut crowded screw tap by claim 1 is described, it is characterized in that cutting short groove (5) is straight trough or skewed slot or helicla flute, the span of locating anterior angle at cutting tooth (6) at 0 degree between 45 degree.
5, cut crowded screw tap by claim 4 is described, its feature in the short groove of cutting (5) inclination angle (11) is arranged.
6, cut crowded screw tap by claim 4 is described, it is characterized in that cutting short groove (5) has spiral shell wedge angle (10).
7, cut crowded screw tap by claim 4 is described, it is characterized in that anterior angle＞0 that cutting cone path (12) is located, anterior angle≤0 that the big footpath of cutting cone (13) is located.
8, cut crowded screw tap by 1 requirement of claim the is described, it is characterized in that on shank (2), being provided with transmission side (16) and at least one ring-type safety groove (14).
9, cut crowded screw tap by claim 8 is described, it is characterized in that between safety groove (14) and working portion (1), being provided with transmission flat (15) or transmission side (16).
10, cut crowded screw tap by claim 9 is described, it is characterized in that metallographic structure state and hardness that metallographic structure state that safety groove (14) locates and hardness and working portion (1) are located are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92223221 CN2136094Y (en) | 1992-05-24 | 1992-05-24 | Cutting and extruding tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92223221 CN2136094Y (en) | 1992-05-24 | 1992-05-24 | Cutting and extruding tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2136094Y true CN2136094Y (en) | 1993-06-16 |
Family
ID=33769141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92223221 Expired - Fee Related CN2136094Y (en) | 1992-05-24 | 1992-05-24 | Cutting and extruding tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2136094Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846508A (en) * | 2012-12-01 | 2014-06-11 | 中国航空工业标准件制造有限责任公司 | Composite type screw tapper for threading machine |
| CN104785870A (en) * | 2015-05-11 | 2015-07-22 | 上海球明标准件有限公司 | Screw tap used for stretching threads |
| CN109562471A (en) * | 2016-08-10 | 2019-04-02 | 奥迪股份公司 | For manufacturing the cutter of internal screw thread in workpiece pre-manufactured hole |
| CN109648022A (en) * | 2019-02-02 | 2019-04-19 | 张咏 | A kind of seamless impulse- free robustness thread forming tap and its internal screw thread of production |
-
1992
- 1992-05-24 CN CN 92223221 patent/CN2136094Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846508A (en) * | 2012-12-01 | 2014-06-11 | 中国航空工业标准件制造有限责任公司 | Composite type screw tapper for threading machine |
| CN104785870A (en) * | 2015-05-11 | 2015-07-22 | 上海球明标准件有限公司 | Screw tap used for stretching threads |
| CN109562471A (en) * | 2016-08-10 | 2019-04-02 | 奥迪股份公司 | For manufacturing the cutter of internal screw thread in workpiece pre-manufactured hole |
| CN109562471B (en) * | 2016-08-10 | 2019-12-10 | 奥迪股份公司 | Tool for producing an internal thread in a preformed hole in a workpiece |
| US10525542B2 (en) | 2016-08-10 | 2020-01-07 | Audi Ag | Tool for producing an internal thread in a workpiece pilot hole |
| CN109648022A (en) * | 2019-02-02 | 2019-04-19 | 张咏 | A kind of seamless impulse- free robustness thread forming tap and its internal screw thread of production |
| CN109648022B (en) * | 2019-02-02 | 2024-01-23 | 张咏 | Seamless burr-free extrusion tap and internal thread manufactured by same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |