CN107225515B - Combined multi-line grinding wheel of extrusion tap thread grinder - Google Patents
Combined multi-line grinding wheel of extrusion tap thread grinder Download PDFInfo
- Publication number
- CN107225515B CN107225515B CN201710562661.7A CN201710562661A CN107225515B CN 107225515 B CN107225515 B CN 107225515B CN 201710562661 A CN201710562661 A CN 201710562661A CN 107225515 B CN107225515 B CN 107225515B
- Authority
- CN
- China
- Prior art keywords
- diamond
- wheel
- combined
- grinding wheel
- sheets
- 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.)
- Active
Links
- 238000001125 extrusion Methods 0.000 title claims abstract description 25
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 96
- 239000010432 diamond Substances 0.000 claims abstract description 96
- 239000011295 pitch Substances 0.000 claims abstract description 28
- 239000011159 matrix material Substances 0.000 claims abstract description 19
- 238000003754 machining Methods 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/18—Wheels of special form
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention discloses a combined multi-line grinding wheel of an extrusion tap thread grinder, which comprises a grinding wheel body and a pair of diamond correction wheels with dislocated thread pitches, wherein the diamond correction wheels are positioned on one side of the grinding wheel body; the grinding wheel body includes: the diamond wheel sheets are combined in parallel, the positioning matrix penetrates through the central positioning hole of the combined diamond wheel sheets, clamping plates matched with the positioning matrix to clamp two sides of the combined diamond wheel sheets, and screws used for assembling and fixing the positioning matrix, the combined diamond wheel sheets and the clamping plates; the section of the thread sharp angle at the outer edge of the diamond wheel sheet forms an included angle of 60 degrees. The invention can ensure that the workpiece is machined in place by cutting and is ground in the whole process, so that the work efficiency is improved by a plurality of times; the multi-wire grinding wheel has longer service life and solves the difficult problem that the existing single multi-wire grinding wheel with the thickness smaller than 0.7mm is difficult to form; the outer diameter stepped structure of the diamond grinding wheels can effectively realize the distribution of precision tolerances and improve the machining precision of the screw threads of the extrusion tap.
Description
Technical Field
The invention relates to an extrusion tap thread grinder, in particular to a combined multi-wire grinding wheel of the extrusion tap thread grinder.
Background
The extrusion tap is a novel thread cutter for processing internal threads by utilizing a metal plastic deformation principle, is a chipless processing technology, is particularly suitable for copper alloy and aluminum alloy with lower strength and better plasticity, and can also be used for tapping materials with low hardness, high plasticity and long service life, such as stainless steel, low carbon steel and the like. The screw thread surface extruded by the extrusion tap has high smoothness, the metal fiber of the screw thread is not broken, and a layer of chilled layer is formed on the surface, so that the strength and the wear resistance of the screw thread can be improved, the difficult problem of chip removal of tapping is fundamentally solved, the screw thread is more beneficial to the assembly of the screw thread due to chipless property, and the screw thread has wide application in the electronic and plastic industries.
At present, the conventional extrusion tap is of a triangular or quadrangular structure, and the plastic deformation and torque value of the tap with three edges are the smallest when the tap with three edges is used for extruding the screw hole, but the cross section area of the tap is small, so that the strength of the tap is lower than that of the tap with four edges, and the measurement is performed by using a comparator, so that measurement errors exist; the plastic deformation and torque value of the four-edge extrusion tap are slightly larger than those of the three-edge extrusion tap, but the measurement is performed by three needles on an indication micrometer, and the measurement value is relatively accurate compared with the measurement mode of a comparator.
The conventional extrusion tap processing adopts a diamond grinding wheel to carry out single-line grinding, and the conventional single-line grinding has the defects of low efficiency and poor processing precision because the extrusion tap is in a triangular or quadrangular structure, so that the multi-line grinding is an emerging mode for the extrusion tap processing at present.
At present, the multi-wire diamond grinding wheel with the surface plating structure can only adopt a surface layer plating structure, if the multi-wire diamond grinding wheel with the surface plating structure is used for processing a small-pitch profile with peak R less than 0.1mm, more than 180# of diamond can be used for plating, but the service life of the diamond plated on the surface is in direct proportion to the granularity, the smaller the granularity is, the longer the service life is, and therefore the diamond grinding wheel with the plating structure in the prior art has poorer service life and higher cost when being used for processing the small-pitch profile. At present, only a single diamond grinding wheel can be sintered by a diamond solid body and ground and finish-machined by a natural diamond grinding wheel, but the single diamond grinding wheel at present cannot meet the requirements of high-efficiency and high-precision machining of a triangular or quadrangular extruding tap and cannot be used for machining and forming of a small-pitch extruding tap with the diameter of less than 0.35 mm.
Disclosure of Invention
In order to solve the technical problems, the invention provides a combined multi-wire grinding wheel of an extrusion tap thread grinder, which comprises a grinding wheel body and a pair of diamond correction wheels with dislocated thread pitches, wherein the diamond correction wheels are positioned on one side of the grinding wheel body;
the grinding wheel body includes: the diamond wheel sheets are combined in parallel, a positioning matrix penetrating through a central positioning hole of the combined diamond wheel sheets, clamping plates matched with the positioning matrix to clamp two sides of the combined diamond wheel sheets, and screws used for assembling and fixing the positioning matrix, the combined diamond wheel sheets and the clamping plates;
the section of the outer edge thread sharp angle of the diamond wheel piece forms an included angle of 60 degrees.
Wherein the diameters of the diamond wheel sheets which are combined in parallel are sequentially reduced, and the difference between the maximum diameter and the minimum diameter is delta h.
Further, the diamond wheel pieces of the single piece all comprise a wheel piece body with a central positioning hole and diamond matrixes which are annularly arranged on the outer diameter of the wheel piece body, the diameters of the wheel piece bodies of the diamond wheel pieces which are combined in parallel are equal, the diameters of the diamond matrixes of the diamond wheel pieces which are combined in parallel are sequentially reduced, the difference between the maximum diameter and the minimum diameter is delta h, wherein the difference between the outer circle diameter and the inner circle diameter of the diamond matrixes is h, the outer diameter of the diamond wheel pieces is D, and the outer diameter of the wheel piece bodies is D 0 ＝D-2h。
The thickness of the wheel sheet body is B, the thickness of the diamond matrix is B, and the thickness B of the diamond matrix is smaller than the thickness B of the wheel sheet body.
Wherein, the diameters of the diamond wheel sheets are arranged from small to large, and the three diamond wheel sheets with the smallest diameter reciprocal have two pitches t between 2 Equal, the pitches t among the rest n diamond wheels 1 Equal.
The pitch of the diamond wheel sheets is 0.7-2mm, the number of the diamond wheel sheets is 6-17, and the smaller the pitch is, the larger the corresponding number is.
Through the technical scheme, the invention has the following advantages:
(1) compared with the existing single-wire grinding, the multi-wire grinding wheel can enable a workpiece to be machined at one time and cut in place, and can enable work efficiency to be improved by a plurality of times by grinding at one time;
(2) the multi-line grinding wheel is formed by combining a plurality of diamond wheel sheets which are independently and finely processed, and compared with the existing multi-line grinding wheel with the surface coated with diamond, the multi-line grinding wheel has longer service life and greatly reduces processing cost;
(3) the high-efficiency processing and forming of the small-pitch extrusion tap with the pitch of 0.35-0.7mm can be obtained by adopting a diamond correction wheel combined structure with a main grinding wheel and a pair of dislocated pitch, and the problem that the existing single multi-wire grinding wheel with the thickness of less than 0.7mm is difficult to form is solved;
(4) the outer diameter stepped structure of the diamond grinding wheels can effectively realize the distribution of precision tolerances and improve the machining precision of the screw threads of the extrusion tap.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic view of a combined multi-wire grinding wheel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a grinding wheel body according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a diamond wheel according to an embodiment of the present invention;
fig. 4 is an enlarged schematic view of the structure at K in fig. 3.
The figures represent the numbers:
10. grinding wheel body 11, positioning base 12, clamping plate
13. Screw 14, diamond wheel piece 15, diamond correction wheel
16. Wheel body 17. Diamond matrix
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, the combined multi-wire grinding wheel of the extrusion tap thread grinder provided by the invention comprises a grinding wheel body 10 and a pair of pitch-misplaced diamond correction wheels 15 positioned on one side of the grinding wheel body 10.
Referring to fig. 2, the grinding wheel body 10 includes: the diamond wheel sheets 14 are combined in parallel, the positioning base 11 penetrates through the central positioning hole 18 of the combined diamond wheel sheet 14, the clamping plates 12 matched with the positioning base 11 to clamp the two sides of the combined diamond wheel sheet 14, and the screws 13 used for assembling and fixing the positioning base 11, the combined diamond wheel sheet 14 and the clamping plates 12; the cross section of the sharp corner of the outer edge thread of the diamond wheel piece 14 forms an included angle of 60 degrees; the diameters of the diamond wheels 14 combined in parallel are sequentially reduced and the difference between the maximum diameter and the minimum diameter is Δh.
Referring to fig. 3 and 4, the single diamond wheel 14 includes a wheel body 16 having a central positioning hole 18, and a diamond matrix 17 annularly disposed on an outer diameter of the wheel body 16, the diameters of the wheel bodies 16 of the plurality of diamond wheels 14 combined in parallel are equal, and the diameters of the diamond matrices 17 of the plurality of diamond wheels 14 combined in parallel are sequentially reduced and a difference between the maximum diameter and the minimum diameter is Δh, wherein a difference between an outer circle diameter and an inner circle diameter of the diamond matrix 17 is h, an outer diameter of the diamond wheel 14 is D, and an outer diameter of the wheel body 16 is D 0 =d-2 h; wherein, the thickness of the wheel sheet body 16 is B, the thickness of the diamond matrix 17 is B, and the thickness B of the diamond matrix 17 is smaller than the thickness B of the wheel sheet body 16; arranged from small to large diameter of the diamond wheel 14, two pitches t between the three diamond wheels 14 with the smallest reciprocal diameter 2 Equal pitch t between the remaining n diamond wheels 14 1 Equal.
Wherein, the corresponding relation between t and D and Deltah is specifically referred to in Table 1:
wherein, the corresponding relation between t and B, B and D is specifically referred to in Table 2:
when the screw pitch of the extrusion tap is less than or equal to 0.7mm, the extrusion tap with the screw pitch of 0.35-0.7mm can be obtained by correcting by adopting a pair of diamond correction wheels 15 with staggered screw pitches.
Wherein, the pitch of the diamond wheel 14 is 0.7-2mm, the number of the diamond wheel 14 is 6-17, and the smaller the pitch is, the larger the corresponding number is, the specific reference table is 3:
| basic thread pitch t (mm) | Number of diamond wheel pieces 14 (pieces) |
| 0.7 | 17 |
| 0.75 | 16 |
| 0.8 | 15 |
| 1 | 12 |
| 1.25 | 10 |
| 1.5 | 8 |
| 1.75 | 7 |
| 2 | 6 |
Compared with the existing single-wire grinding, the multi-wire grinding wheel can enable a workpiece to be machined at one time and cut in place, and can enable work efficiency to be improved by a plurality of times through one-time full-range grinding; the multi-line grinding wheel is formed by combining a plurality of diamond wheel sheets 14 which are formed by independent finish machining, and compared with the existing multi-line grinding wheel with the surface coated with diamond, the multi-line grinding wheel has longer service life and greatly reduces the machining cost; the combined structure of the main grinding wheel and the pair of the diamond correction wheels 15 with staggered screw pitches is adopted, and the high-efficiency processing and forming of the small-screw-pitch extrusion tap with the screw pitches between 0.35 and 0.7mm can be obtained through the correction of the diamond correction wheels 15, so that the problem that the existing single multi-wire grinding wheel with the thickness smaller than 0.7mm is difficult to form is solved; the outer diameter stepped structure of the diamond grinding wheels can effectively realize the distribution of precision tolerances and improve the machining precision of the screw threads of the extrusion tap.
Various modifications to the embodiments described above will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. The combined multi-line grinding wheel of the extrusion tap thread grinder is characterized by comprising a grinding wheel body and a pair of pitch misplaced diamond correction wheels positioned on one side of the grinding wheel body;
the grinding wheel body includes: the diamond wheel sheets are formed by independent fine machining, pass through the positioning matrix of the combined diamond wheel sheet center positioning hole, match with the positioning matrix to clamp the clamping plates on two sides of the combined diamond wheel sheet, and are used for assembling and fixing the positioning matrix, the combined diamond wheel sheet and the clamping plates;
the section of the thread sharp angle at the outer edge of the diamond wheel sheet forms an included angle of 60 degrees;
the diameters of the diamond wheel sheets which are combined in parallel are sequentially reduced, and the difference between the maximum diameter and the minimum diameter is delta h;
the single diamond wheel piece comprises a wheel piece body with a central positioning hole and a diamond matrix annularly arranged on the outer diameter of the wheel piece body, wherein the thickness of the wheel piece body is B, the thickness of the diamond matrix is B, and the thickness B of the diamond matrix is smaller than the thickness B of the wheel piece body;
the two pitches t between the three diamond wheel sheets with the smallest diameter reciprocal are arranged from small to large according to the diameters of the diamond wheel sheets 2 Equal, the pitches t among the rest n diamond wheels 1 Equal.
2. The combination type multi-wire grinding wheel of the extrusion tap thread grinder according to claim 1, wherein the diameters of the wheel bodies of the plurality of the diamond wheel pieces combined in parallel are equal, and the diameters of the diamond substrates of the plurality of the diamond wheel pieces combined in parallel are sequentially reduced and the difference between the maximum diameter and the minimum diameter is Δh, wherein the difference between the outer circle diameter and the inner circle diameter of the diamond substrate is h.
3. The combination multi-wire grinding wheel of an extrusion tap thread grinder according to claim 1 or 2, wherein the pitch of the diamond wheels is 0.7-2mm, the number of the diamond wheels is 6-17, and the smaller the pitch, the larger the corresponding number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562661.7A CN107225515B (en) | 2017-07-11 | 2017-07-11 | Combined multi-line grinding wheel of extrusion tap thread grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562661.7A CN107225515B (en) | 2017-07-11 | 2017-07-11 | Combined multi-line grinding wheel of extrusion tap thread grinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107225515A CN107225515A (en) | 2017-10-03 |
| CN107225515B true CN107225515B (en) | 2023-06-30 |
Family
ID=59956986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710562661.7A Active CN107225515B (en) | 2017-07-11 | 2017-07-11 | Combined multi-line grinding wheel of extrusion tap thread grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107225515B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109070315B (en) * | 2018-05-03 | 2020-11-03 | 深圳大学 | Grinding wheel tool for micro-groove machining and manufacturing method thereof |
| CN111113286B (en) * | 2020-01-13 | 2024-07-30 | 宋京新 | Split cup-shaped grinding wheel for electroplated steel wire teeth |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4084070B2 (en) * | 2002-04-09 | 2008-04-30 | 株式会社リード | Manufacturing method of multilayer blade |
| FR2898070B1 (en) * | 2006-03-06 | 2009-01-09 | Saint Gobain Abrasifs Tech | FINE BEARING WHEEL, USE THEREOF, METHOD AND DEVICE FOR MANUFACTURING THE SAME |
| DE102008023946B3 (en) * | 2008-05-16 | 2009-04-02 | August Rüggeberg Gmbh & Co. Kg | Rough-grinding wheel |
| KR20100138377A (en) * | 2009-06-25 | 2010-12-31 | 엘지디스플레이 주식회사 | Polishing machine and manufacturing method of display device using same |
| JP5693144B2 (en) * | 2010-10-27 | 2015-04-01 | 豊田バンモップス株式会社 | Rotary dresser |
| KR101342744B1 (en) * | 2012-06-07 | 2013-12-19 | 이화다이아몬드공업 주식회사 | Edging wheel for grinding edge of glass substrate and method of manufacturing of the same |
| CN202964302U (en) * | 2012-11-20 | 2013-06-05 | 苏州精协机械制造有限公司 | Grinding head mechanism of small screw tap thread grinder |
| CN203726355U (en) * | 2014-03-26 | 2014-07-23 | 山东天岳晶体材料有限公司 | Grinding wheel for chamfering edge of large-diameter silicon carbide wafer |
| CN205363627U (en) * | 2015-12-01 | 2016-07-06 | 郑州磨料磨具磨削研究所有限公司 | Integrated configuration emery wheel |
| CN205465491U (en) * | 2016-01-30 | 2016-08-17 | 苏州精协机械制造有限公司 | Automatic thread grinder's of extrusion tap emery wheel correction mechanism |
| CN207058376U (en) * | 2017-07-11 | 2018-03-02 | 苏州精协机械制造有限公司 | The multi-thread emery wheel of combined type of thread forming tap screw grinder |
-
2017
- 2017-07-11 CN CN201710562661.7A patent/CN107225515B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107225515A (en) | 2017-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9868162B2 (en) | Machining head, holder and exchangeable tip cutting tool | |
| US8061946B2 (en) | Threaded assembly comprising internal thread member, and external thread member | |
| CN107225515B (en) | Combined multi-line grinding wheel of extrusion tap thread grinder | |
| CN107363276B (en) | Double-sided groove type indexable cutting blade | |
| US20200122300A1 (en) | Grinding wheel tool for microgroove processing and fabrication method thereof | |
| CN116475504A (en) | A gear end face tooth profile chamfering tool with a disc-shaped helical blade structure and its design method | |
| WO2017113041A1 (en) | Tct clamped cemented carbide circular saw blade | |
| CN100418694C (en) | Sector gear machining method | |
| CN216608562U (en) | Honing cover and contain honing tool of this honing cover | |
| CN207058376U (en) | The multi-thread emery wheel of combined type of thread forming tap screw grinder | |
| CN110744267A (en) | Ring for wind power equipment and machining process | |
| CN212419798U (en) | Indexable formed milling cutter | |
| CN112676767B (en) | Assembling method of high-precision form and position tolerance quick-change tool with vertical plate | |
| CN211028418U (en) | Rapid positioning clamp for hollow shaft gear shaping | |
| CN211490317U (en) | Double-step single-spiral screw tap for processing double threaded holes of retainer assembly | |
| CN204504364U (en) | Mechanical clamping type combined broach | |
| CN115647755B (en) | A method for machining mesh on the surface of thin parts | |
| CN213104272U (en) | Deburring extrusion screw tap | |
| CN114603375A (en) | Machining tool and machining process for thin-wall plate parts | |
| CN111113286B (en) | Split cup-shaped grinding wheel for electroplated steel wire teeth | |
| CN106825719A (en) | Cutting tip | |
| CN206464651U (en) | A kind of thin-wall pipe internal thread machining cutter | |
| CN207119995U (en) | Rotary table and lathe | |
| CN207309028U (en) | Self-locking fast replacing drill | |
| CN207616198U (en) | Anti-deformation flexible mandrel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |