CN214721233U - Combined type screw tap - Google Patents
Combined type screw tap Download PDFInfo
- Publication number
- CN214721233U CN214721233U CN202023028456.9U CN202023028456U CN214721233U CN 214721233 U CN214721233 U CN 214721233U CN 202023028456 U CN202023028456 U CN 202023028456U CN 214721233 U CN214721233 U CN 214721233U
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- Prior art keywords
- conical
- tooth
- screw
- neck
- conical tooth
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- 239000002131 composite material Substances 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 229910010037 TiAlN Inorganic materials 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229910001315 Tool steel Inorganic materials 0.000 claims description 3
- 238000001319 headspace solid-phase micro-extraction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000010079 rubber tapping Methods 0.000 description 10
- 238000003754 machining Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The invention discloses a composite tap, which comprises a first conical tooth and a second conical tooth; a sleeve hole coaxial with the first cone tooth is formed in the first cone tooth, and a first pin hole penetrating through the first cone tooth is formed in the radial direction of the sleeve hole; the upper end of the second conical tooth is provided with a second screw conical neck with a small diameter smaller than that of the second conical tooth, and a second pin hole penetrating through the second screw conical neck is formed in the radial direction of the second screw conical neck; the second screw tap neck and the first pin hole can be sleeved in a sliding and rotating mode along the axial direction; and pin columns are arranged in the first pin hole and the second pin hole. The breaking strength of the pin is less than that of the second tap neck. The composite screw tap can process internal threads with two specifications under the condition of not replacing the screw tap; the breaking strength of the pin column is smaller than that of the second screw taper neck, so that the second cone tooth can be prevented from being damaged, and the cost is saved; the deviation of the prefabricated thread bottom hole can be overcome, and the high-coaxiality internal thread hole can be machined on the same workpiece or a combined workpiece.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a combined type screw tap.
Background
The screw tap is a common tool for processing internal threads, in the prior art, one screw tap only has threads of one specification, the screw tap needs to be replaced when threads of different specifications are processed, and the efficiency is reduced due to the replacement of the screw tap; particularly, when the threads with different specifications are coaxially arranged, the existing screw tap needs to be replaced when the existing screw tap is adopted for machining, and the machined threads have the problem of low coaxiality due to the reasons of positioning, deviation of a prefabricated thread bottom hole and the like when the screw tap is replaced for tapping again.
Therefore, it is highly desirable to design a composite tap, which can process two types of threads simultaneously and is especially suitable for processing threads with high coaxiality requirements.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a composite tap which can be used for simultaneously machining threads with two specifications and is particularly suitable for machining threads with high coaxiality requirements.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a composite tap, characterized in that: comprises a first conical tooth (20) and a second conical tooth (30);
a sleeve joint hole (12) coaxial with the first cone tooth (20) is formed in the first cone tooth (20), and a first pin hole (21) penetrating through the first cone tooth (20) is formed in the radial direction of the sleeve joint hole (12);
the upper end of the second conical tooth (30) is provided with a second screw conical neck (31) smaller than the small diameter of the second conical tooth (30), and a second pin hole (32) penetrating through the second screw conical neck (31) is formed in the radial direction of the second screw conical neck (31);
the second screw tap neck (31) and the first pin hole (21) can be sleeved in a sliding and rotating mode along the axial direction;
the first pin hole (21) and the second pin hole (32) are internally provided with detachable pins (40), and the pins (40) enable the first conical tooth (20) and the second conical tooth (30) to be relatively fixed.
Preferably, at least two second pin holes (32) are formed along the axial direction of the second screw taper neck (31).
Preferably, at least two first pin holes (21) are arranged along the axial direction of the first conical tooth (20); the lateral wall of cup joint hole (12) is provided with at least one oil groove (13), oil groove (13) are crossing with first pinhole (21).
Preferably, the included angle between the first pin hole (21) and the axis of the sleeving hole (12) is 70-85 degrees.
Preferably, the side wall of the first conical tooth (20) and/or the second conical tooth (30) is provided with a chip groove (14).
Preferably, a first screw tap neck (11) and a screw tap handle (10) which are coaxial with the first conical tooth (20) are sequentially arranged at the upper end of the first conical tooth (20), and the first screw tap neck (11) is smaller than the small diameter of the first conical tooth (20).
Preferably, the first and second tapered teeth (20, 30) have the same pitch.
Preferably, the material of the first conical tooth (20) and the second conical tooth (30) is HSSE high-speed tool steel, and the hardness is more than or equal to HRC 64.
Preferably, the surfaces of the first conical tooth (20) and the second conical tooth (30) are provided with TiAlN coating.
Preferably, the first pin hole (21) penetrates through the first conical tooth (20) on one side, the other side of the first conical tooth (20) is provided with a pin withdrawing hole (22) coaxial with the first pin hole (21), and the pin withdrawing hole (22) is smaller than the first pin hole (21).
Preferably, the breaking strength of the pin (40) is smaller than the breaking strength of the second screw cone neck (31).
Compared with the prior art, the invention has the beneficial effects that:
1. one tap is provided with two specifications of taps, so that the internal threads of the two specifications can be processed without replacing the taps;
2. the distance between the second conical tooth and the first conical tooth can be adjusted, and the threaded hole can be suitable for threaded holes with different depths;
3. the breaking strength of the pin column is smaller than that of the second screw taper neck, so that the second cone tooth can be prevented from being damaged, and the cost is saved;
4. the deviation of the prefabricated thread bottom hole can be overcome, and the high-coaxiality internal thread hole can be processed on the same workpiece or a combined workpiece.
5. The good tapping oil flow passage is arranged, so that good cooling and lubricating effects can be obtained when the second conical tooth and the first conical tooth are simultaneously tapped.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
FIG. 4 is an enlarged view of portion C of FIG. 2;
fig. 5 is a schematic view of a usage state.
Wherein: a tap shank 10; a first tap neck 11; a socket hole 12; an oil sump 13; chip flutes 14; a first awl tooth 20; a first pin hole 21; a pin withdrawal hole 22; a second cone tooth 30; a second tap neck 31; a second pin hole 32; and a pin 40.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention will be further described with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1, 2, 3, 4, 5, a composite tap includes a first tapping portion 20 and a second tapping portion 30;
a sleeve hole 12 coaxial with the first cone tooth 20 is arranged in the first cone tooth 20, and a first pin hole 21 penetrating through the first cone tooth 20 is radially arranged in the sleeve hole 12;
the upper end of the second conical tooth 30 is provided with a second screw conical neck 31 with a smaller diameter than that of the second conical tooth 30, and a second pin hole 32 penetrating through the second screw conical neck 31 is radially arranged on the second screw conical neck 31;
the second screw tap neck 31 and the first pin hole 21 can be sleeved in a sliding and rotating mode along the axial direction;
the first pin hole 21 and the second pin hole 32 are internally provided with detachable pins 40, and the pins 40 fix the first conical tooth 20 and the second conical tooth 30 relatively.
Further, in order to adjust the distance between the first conical tooth 20 and the second conical tooth 30, at least two second pin holes 32 are provided along the axial direction of the second screw neck 31. After adjusting to the proper position, the pin 40 is used to fix the device.
Further, as shown in fig. 2, 3, 4 and 5, in use, the first cone tooth 20 and the second cone tooth 30 are simultaneously tapped, the tapping oil for lubrication and cooling cannot smoothly reach the working section of the second cone tooth 30 due to the blockage of the first cone tooth 20, and in order to enable the tapping oil to perform good lubrication and cooling on the second cone tooth 30, at least two first pin holes 21 are arranged along the axial direction of the first cone tooth 20; the side wall of the sleeving hole 12 is provided with at least one oil groove 13, and the oil groove 13 is intersected with the first pin hole 21. The tapping oil can flow to the second taper 30 through the first pin hole 21 and the oil groove 13 where the pin 40 is not installed.
Further, in order to facilitate the tapping oil to flow to the oil groove 13, the first pin hole 21 is inclined to a certain extent, and an included angle between the first pin hole 21 and the axis of the sleeve hole 12 is 70-85 degrees.
Further, in order to smoothly discharge the chips, the side wall of the first and/or second tapered teeth 20 and 30 is provided with a chip pocket 14.
Further, in order to facilitate clamping and tapping, a first tap neck 11 and a tap handle 10 which are coaxial with the first tap 20 are sequentially arranged at the upper end of the first tap 20, and the first tap neck 11 is smaller than the small diameter of the first tap 20.
Further, the pitch of the first and second tapered teeth 20 and 30 is the same.
As shown in fig. 5, under some working conditions requiring high coaxiality, the first and second tapered teeth 20 and 30 can be used for simultaneously tapping, so that errors caused by screw tap replacement and repositioning in the conventional technology can be avoided, and the efficiency of the invention is higher; in this embodiment, the first taper tooth 20 has a specification of m14x1.0, and the second taper tooth 30 has a specification of m8x1.0.
Furthermore, the material of the first conical tooth 20 and the second conical tooth 30 is HSSE high-speed tool steel, and the hardness is more than or equal to HRC 64.
Furthermore, the surfaces of the first conical tooth 20 and the second conical tooth 30 are provided with TiAlN coatings, and the TiAlN coatings can improve and reduce friction coefficients, reduce adhesion of workpiece materials and prolong the service life of the screw tap.
Furthermore, in order to facilitate the removal of the pin 40, as shown in fig. 4, one side of the first pin hole 21 penetrates through the first tap 20, the other side of the first tap 20 is provided with a pin-withdrawing hole 22 coaxial with the first pin hole 21, and the pin-withdrawing hole 22 is smaller than the first pin hole 21. The pin 40 is ejected from the first pin hole 21 by inserting a pin through the pin-ejecting hole 22.
Further, the breaking strength of the pin 40 is smaller than that of the second tap neck 31. Since the second cone 30 is small and is easily broken during operation, and the second cone 30 is high in cost, the breaking strength of the pin 40 is set to be smaller than that of the second screw taper neck 31 in order to reduce cost, so that if the torque is too large, the low-cost pin 40 is broken first, and after the pin 40 is broken, the second screw taper neck 31 can rotate in the socket hole 12 without breaking.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the protective scope of the present patent claims.
Claims (10)
1. A composite tap, characterized in that: comprises a first conical tooth (20) and a second conical tooth (30);
a sleeve joint hole (12) coaxial with the first cone tooth (20) is formed in the first cone tooth (20), and a first pin hole (21) penetrating through the first cone tooth (20) is formed in the radial direction of the sleeve joint hole (12);
the upper end of the second conical tooth (30) is provided with a second screw conical neck (31) smaller than the small diameter of the second conical tooth (30), and a second pin hole (32) penetrating through the second screw conical neck (31) is formed in the radial direction of the second screw conical neck (31);
the second screw tap neck (31) and the first pin hole (21) can be sleeved in a sliding and rotating mode along the axial direction;
the first pin hole (21) and the second pin hole (32) are internally provided with detachable pins (40), and the pins (40) enable the first conical tooth (20) and the second conical tooth (30) to be relatively fixed.
2. The composite tap according to claim 1, wherein: at least two second pin holes (32) are arranged along the axial direction of the second screw taper neck (31).
3. The composite tap according to claim 1, wherein: at least two first pin holes (21) are arranged along the axial direction of the first conical tooth (20); the lateral wall of cup joint hole (12) is provided with at least one oil groove (13), oil groove (13) are crossing with first pinhole (21).
4. The composite tap according to claim 1, wherein: the included angle between the first pin hole (21) and the axis of the sleeving hole (12) is 70-85 degrees.
5. The composite tap according to claim 1, wherein: the side wall of the first conical tooth (20) and/or the second conical tooth (30) is provided with a chip groove (14).
6. The composite tap according to claim 1, wherein: the upper end of the first conical tooth (20) is sequentially provided with a first screw conical neck (11) and a screw conical handle (10) which are coaxial with the first conical tooth (20), and the first screw conical neck (11) is smaller than the small diameter of the first conical tooth (20).
7. The composite tap according to claim 1, wherein: the first conical tooth (20) and the second conical tooth (30) have the same pitch.
8. The composite tap according to claim 1, wherein: the first conical tooth (20) and the second conical tooth (30) are made of HSSE high-speed tool steel, and the hardness is more than or equal to HRC 64; the surfaces of the first conical tooth (20) and the second conical tooth (30) are provided with TiAlN coatings.
9. The composite tap according to claim 1, wherein: first pin hole (21) unilateral runs through first awl tooth (20), the opposite side of first awl tooth (20) is provided with moves back pinhole (22) coaxial with first pin hole (21), it is less than first pin hole (21) to move back pinhole (22).
10. The composite tap according to claim 1, wherein: the breaking strength of the pin (40) is smaller than the breaking strength of the second screw cone neck (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023028456.9U CN214721233U (en) | 2020-12-16 | 2020-12-16 | Combined type screw tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023028456.9U CN214721233U (en) | 2020-12-16 | 2020-12-16 | Combined type screw tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214721233U true CN214721233U (en) | 2021-11-16 |
Family
ID=78631639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023028456.9U Active CN214721233U (en) | 2020-12-16 | 2020-12-16 | Combined type screw tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214721233U (en) |
-
2020
- 2020-12-16 CN CN202023028456.9U patent/CN214721233U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220802 Address after: Phase 2 Gaocheng District, Zhaoqing City, Guangdong Province Patentee after: GUANGDONG HONGTAI TECHNOLOGY (HOLDING) Co.,Ltd. Address before: Phase 2 Gaocheng District, Zhaoqing City, Guangdong Province Patentee before: GUANGDONG HONGTAI TECHNOLOGY (HOLDING) Co.,Ltd. Patentee before: Zhaoqing Hongtai Industrial Machinery Technology Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A compound tap Effective date of registration: 20220801 Granted publication date: 20211116 Pledgee: Zhaoqing Rural Commercial Bank Co.,Ltd. Gaoyao sub branch Pledgor: GUANGDONG HONGTAI TECHNOLOGY (HOLDING) Co.,Ltd. Registration number: Y2022980011720 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221209 Granted publication date: 20211116 Pledgee: Zhaoqing Rural Commercial Bank Co.,Ltd. Gaoyao sub branch Pledgor: GUANGDONG HONGTAI TECHNOLOGY (HOLDING) Co.,Ltd. Registration number: Y2022980011720 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A composite tap Effective date of registration: 20221226 Granted publication date: 20211116 Pledgee: Zhaoqing Rural Commercial Bank Co.,Ltd. Gaoyao sub branch Pledgor: GUANGDONG HONGTAI TECHNOLOGY (HOLDING) Co.,Ltd. Registration number: Y2022980028807 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230728 Granted publication date: 20211116 Pledgee: Zhaoqing Rural Commercial Bank Co.,Ltd. Gaoyao sub branch Pledgor: GUANGDONG HONGTAI TECHNOLOGY (HOLDING) Co.,Ltd. Registration number: Y2022980028807 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A composite tap Effective date of registration: 20230731 Granted publication date: 20211116 Pledgee: Zhaoqing Rural Commercial Bank Co.,Ltd. Gaoyao sub branch Pledgor: GUANGDONG HONGTAI TECHNOLOGY (HOLDING) Co.,Ltd. Registration number: Y2023980050401 |