CN107309713B - A kind of method that determining screw grinder processes more rib thread forming tap parameters - Google Patents
A kind of method that determining screw grinder processes more rib thread forming tap parameters Download PDFInfo
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- CN107309713B CN107309713B CN201710523708.9A CN201710523708A CN107309713B CN 107309713 B CN107309713 B CN 107309713B CN 201710523708 A CN201710523708 A CN 201710523708A CN 107309713 B CN107309713 B CN 107309713B
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- thread forming
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- forming tap
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- 238000000034 method Methods 0.000 title claims description 23
- 238000012545 processing Methods 0.000 claims abstract description 25
- 229910001651 emery Inorganic materials 0.000 claims abstract description 17
- 238000013459 approach Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 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
- 241001269238 Data Species 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229920000914 Metallic fiber Polymers 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/18—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of taps or reamers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The present invention is based on GB/T 28253-2012 and JB/T7428-2006, and the Δ r value of the thread forming tap of M2-M8 specification has accurately been determined, and further it is deduced each machined parameters of thread forming tap, including radius value r, adjacent two seamed edges line perpendicular bisector to workpiece to be processed outer diameter spacing H, the spacing C of adjacent two seamed edge, the spacing h of adjacent two seamed edges line perpendicular bisector workpiece cambered surface to after processing, the cambered surface radius R of workpiece after the diameter d for the Grid Track that the center of circle of the cambered surface radius of workpiece is formed and processing, and above-mentioned parameter corresponds to the parameters relationship of emery wheel main shaft, to provide accurate software control for the accurate processing of thread forming tap, only need to can be realized corresponding parameter input control system the high-efficiency high-accuracy processing of thread forming tap when processing.
Description
Technical field
The present invention relates to a kind of methods that determining screw grinder processes more rib thread forming tap parameters.
Background technique
Thread forming tap is a kind of Novel threaded cutter of machining internal thread, thread forming tap using metal plastic deformation principle
Squeezing internal screw thread is ELEMENTARY INTRODUCTION TO NON technique, plasticity preferable copper alloy lower especially suitable for intensity and aluminium alloy, it can also be used to
The material tapping that the hardness such as stainless steel and mild steel are low, plasticity is big, service life are long.The thread surface finish squeezed out with thread forming tap
The metallic fiber of height, screw thread is not broken, and forms one layer of chilling layer on surface, the intensity and wearability of screw thread can be improved, from root
It solves the chip removal difficult problem of tapping in sheet, the assembly of screw thread is more advantageous to because of chipless, it is wide in electronics, plastic industry application
It is general.
Thread forming tap conventional at present is trigone or tetragonous structure, the screw tap of three seamed edges be plastically deformed when squeezing screw hole with
Torque value is minimum, but its cross-sectional area is small, thus its intensity is compared with the intensity difference of four seamed edge structures, and measuring is measured with comparator
And there are measurement errors；And four seamed edge thread forming taps plastic deformation and torque value are slightly larger compared with the thread forming tap of three seamed edges, but it is surveyed
Amount is measured on indicating mcrocalliper with three needles, its measured value is relatively accurate compared with comparator measurement method.
Currently, the production of thread forming tap is at the early-stage at home, production accepted standard is respectively " GB/T 28253-
2012 thread forming taps " and " JB/T7428-2006 thread forming tap ", and the thread forming tap production that above-mentioned two standards are directed to is only examination
The first draft of row scheme has mainly determined the precision aspect parameter of thread forming tap product, and specific section shape aspect is only to provide
Some reference datas and be that provide specific section shape parameter, and above-mentioned two standards are directed to is only M4 or less specification
The reference data that thread forming tap provides as shown in table 1, and does not have directive significance for thread forming tap more than M4 specification.
Table 1: the section shape reference parameter (X value) based on JB/T7428-2006 thread forming tap
In upper table: n indicates that the seamed edge number of thread forming tap, i.e. n=3 are three seamed edge thread forming taps, and n=4 is the extruding of four seamed edges
Screw tap.
By upper table 1 it is found that currently based on the relevant parameter of thread forming tap be reference parameter and not exclusively, it is rigid for China
For the thread forming tap production and processing of ground zero also more blindly, so that preferable processing efficiency and product quality cannot be obtained,
Therefore, it is necessary to for thread forming tap section shape solid derive corresponding parameter and formula and develop corresponding software with
In thread forming tap screw grinder, so that the more efficient and high-precision production and processing for realizing thread forming tap, promotes China and squeezes
The level of processing and Product Precision of screw tap.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of determining screw grinders to process more rib thread forming tap parameters
Method includes the following steps:
1) the Δ r value of the thread forming tap of corresponding M2-M8 specification is determined first；
2) radius value r=D/2 is determined further according to the diameter D of workpiece to be processed；
3) further according to the determining radius value r of step 2) with the adjacent two seamed edges line perpendicular bisector of determination to workpiece to be processed outer diameter
Spacing H=ar, while according to step 2) determine radius value r with the spacing C=br of adjacent two seamed edge of determination；
4) further according to the determining H value of the determining Δ r value of step 1) and step 3) to hang down in the adjacent two seamed edges line of determination
The spacing h=H- Δ r of line workpiece cambered surface to after processing；
5) diameter for the Grid Track that the center of circle of the cambered surface radius R of workpiece is formed further is obtained by above-mentioned steps
6) cambered surface radius of workpiece after further being processed by above-mentioned stepsCambered surface radius R adds
The maximum spacing of any cambered surface of workpiece and Grid Track after work.
Wherein, work as n=3, when as three seamed edge thread forming taps are processed, a=0.5,X=r；Work spindle is extremely ground
The spacing of wheelWherein, -60 °≤θ≤60 °, when work spindle rotation angle θ is in 0 °
When,Work spindle and emery wheel principal axis centre distance A=A'+A0, wherein A0=| R |-Δ v, | R | for mill
Radius is taken turns, Δ v is the compensating approach value of wheel radius.
Wherein, work as n=4, when as four seamed edge thread forming taps are processed, a=0.2929, b=1.4142, x=C；Workpiece master
Axis to emery wheel spacingWherein, -45 °≤θ≤45 °, at work spindle rotation angle θ
When 0 °,Work spindle and emery wheel principal axis centre distance A=A'+A0, wherein A0=| R |-Δ v, | R |
For wheel radius, Δ v is the compensating approach value of wheel radius.
Through the above technical solutions, the present invention is based on GB/T 28253-2012 and JB/T7428-2006 accurately to have determined
The Δ r value of the thread forming tap of M2-M8 specification, and further it is deduced each machined parameters of thread forming tap and corresponding emery wheel master
The parameters relationship of axis, so that the accurate processing for thread forming tap provides accurate software control, when processing, only needs to correspond to
Parameter input control system can be realized thread forming tap high-efficiency high-accuracy processing.
Detailed description of the invention
Fig. 1 is a kind of trigone thread forming tap section shape parameter schematic diagram disclosed in the embodiment of the present invention；
Fig. 2 is a kind of tetragonous thread forming tap section shape parameter schematic diagram disclosed in the embodiment of the present invention；
Fig. 3 is the section shape parameter schematic diagram that trigone thread forming tap disclosed in embodiment corresponds to emery wheel main shaft；
Fig. 4 is the section shape parameter schematic diagram that tetragonous thread forming tap disclosed in embodiment corresponds to emery wheel main shaft.
Specific embodiment
Embodiment 1:
With reference to Fig. 1 and 3, the method for determining screw grinder processing trigone thread forming tap parameter provided by the invention, including such as
Lower step:
1) the Δ r value of the thread forming tap of corresponding M2-M8 specification is determined first, as shown in table 1；
2) radius value r=D/2 is determined further according to the diameter D of workpiece to be processed；
3) further according to the determining radius value r of step 2) with the adjacent two seamed edges line perpendicular bisector of determination to workpiece to be processed outer diameter
Spacing H=0.5r, while according to step 2) determine radius value r with the spacing of adjacent two seamed edge of determination
4) further according to the determining H value of the determining Δ r value of step 1) and step 3) to hang down in the adjacent two seamed edges line of determination
The spacing h=H- Δ r of line workpiece cambered surface to after processing；
5) diameter for the Grid Track that the center of circle of the cambered surface radius R of workpiece is formed further is obtained by above-mentioned steps
6) workpiece cambered surface radius after further being processed by above-mentioned stepsCambered surface radius R is processed
Any cambered surface of workpiece and the maximum spacing with Grid Track afterwards；
7) spacing of work spindle to emery wheel is further obtained by above-mentioned stepsWherein, -60 °≤θ≤60 °, when work spindle rotation angle θ is in 0 °,Work spindle and emery wheel principal axis centre distance A=A'+A0, wherein A0=| R |-Δ v, | R | it is emery wheel
Radius, Δ v are the compensating approach value of wheel radius；
8) it only needs the above-mentioned corresponding parameter input control system the efficient high-precision of thread forming tap can be realized when processing
Degree processing.
Embodiment 2:
With reference to Fig. 2 and 4, the method that determining screw grinder provided by the invention processes tetragonous thread forming tap parameter, including such as
Lower step:
1) the Δ r value of the thread forming tap of corresponding M2-M8 specification is determined first, as shown in table 1；
2) radius value r=D/2 is determined further according to the diameter D of workpiece to be processed；
3) further according to the determining radius value r of step 2) with the adjacent two seamed edges line perpendicular bisector of determination to workpiece to be processed outer diameter
Spacing H=0.2929r, while according to step 2) determine radius value r with the spacing C=1.4142r of adjacent two seamed edge of determination；
4) further according to the determining H value of the determining Δ r value of step 1) and step 3) to hang down in the adjacent two seamed edges line of determination
The spacing h=H- Δ r of line workpiece cambered surface to after processing；
5) diameter for the Grid Track that the center of circle of the cambered surface radius R of workpiece is formed further is obtained by above-mentioned steps
6) workpiece cambered surface radius after further being processed by above-mentioned stepsCambered surface radius R is processed
Any cambered surface of workpiece and the maximum spacing with Grid Track afterwards；
7) spacing of work spindle to emery wheel is further obtained by above-mentioned steps
Wherein, -45 °≤θ≤45 °, when work spindle rotation angle θ is in 0 °,Work spindle and emery wheel
Principal axis centre distance A=A'+A0, wherein A0=| R |-Δ v, | R | it is wheel radius, Δ v is the compensating approach value of wheel radius；
8) it only needs the above-mentioned corresponding parameter input control system the efficient high-precision of thread forming tap can be realized when processing
Degree processing.
Table 1: the Δ r value of the thread forming tap of corresponding M2-M8 specification
| Specification | N=3 | N=4 |
| M2 | 0.12 | 0.09 |
| M2.2 | 0.14 | 0.10 |
| M2.5 | 016 | 0.12 |
| M3 | 0.18 | 0.14 |
| M4 | 0.24 | 0.18 |
| M4.5 | 0.26 | 0.20 |
| M5 | 0.28 | 0.22 |
| M6 | 0.35 | 0.3 |
| M7 | 0.35 | 0.3 |
| M8 | 0.44 | 0.34 |
The present invention is based on GB/T 28253-2012 and JB/T7428-2006, and the extruding silk of M2-M8 specification has accurately been determined
The Δ r value of cone, and it is further deduced the parameters relationship of each machined parameters of thread forming tap and corresponding emery wheel main shaft, thus
Accurate software control is provided for the accurate processing of thread forming tap, and when processing only needs corresponding parameter input control system
The high-efficiency high-accuracy processing of thread forming tap can be realized.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
A variety of modifications of above-described embodiment will be readily apparent to those skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (5)
1. a kind of method that determining screw grinder processes more rib thread forming tap parameters, which comprises the steps of:
1) the Δ r value of the thread forming tap of corresponding M2-M8 specification is determined first；
2) radius value r=D/2 is determined further according to the diameter D of workpiece to be processed；
3) further according to step 2) determine radius value r with the adjacent two seamed edges line perpendicular bisector of determination between workpiece to be processed outer diameter
Away from H=ar, while the radius value r determined according to step 2) is with the spacing C=br of adjacent two seamed edge of determination；
4) further according to step 1) determine Δ r value and step 3) determine H value with the adjacent two seamed edges line perpendicular bisector of determination extremely
The spacing h=H- Δ r of workpiece cambered surface after processing；
5) diameter for the Grid Track that the center of circle of the cambered surface radius R of workpiece is formed further is obtained by above-mentioned steps
6) cambered surface radius of workpiece after further being processed by above-mentioned stepsAfter cambered surface radius R is processed
The maximum spacing of any cambered surface of workpiece and Grid Track；
Wherein, above-mentioned Δ r value is workpiece cambered surface after radius value r and processing to the difference between the minimum value of workpiece to be processed axle center；
Wherein, work as n=3, when as three seamed edge thread forming taps are processed, a=0.5,X=r；
Wherein, work as n=4, when as four seamed edge thread forming taps are processed, a=0.2929, b=1.4142, x=C.
2. the method that determining screw grinder according to claim 1 processes more rib thread forming tap parameters, which is characterized in that when
When n=3, as three seamed edge thread forming taps are processed, a=0.5,X=r, by above-mentioned steps 6) further obtain workpiece master
Axis to emery wheel spacingWherein, -60 °≤θ≤60 °；Wherein, when work spindle revolves
When rotational angle theta is in 0 °,
3. the method that determining screw grinder according to claim 2 processes more rib thread forming tap parameters, which is characterized in that by
Above-mentioned steps further obtain work spindle and emery wheel principal axis centre distance A=A'+A0, wherein A0=| R |-Δ v, wherein | R | be
Wheel radius, Δ v are the compensating approach value of wheel radius.
4. the method that determining screw grinder according to claim 1 processes more rib thread forming tap parameters, which is characterized in that when
When n=4, as four seamed edge thread forming taps are processed, a=0.2929, b=1.4142, x=C, by above-mentioned steps 6) further obtain
Work spindle to emery wheel spacingWherein, -45 °≤θ≤45 °；Wherein, as workpiece master
When axis rotation angle θ is in 0 °,
5. the method that determining screw grinder according to claim 4 processes more rib thread forming tap parameters, which is characterized in that by
Above-mentioned steps further obtain work spindle and emery wheel principal axis centre distance A=A'+A0, wherein A0=| R |-Δ v, wherein | R | be
Wheel radius, Δ v are the compensating approach value of wheel radius.
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| CN111098194B (en) * | 2019-12-31 | 2022-04-01 | 科德数控股份有限公司 | Cutter-grinding machining method for slotting of screw tap |
| CN112757061B (en) * | 2020-12-24 | 2022-01-04 | 西北机器有限公司 | Method for machining extrusion screw tap |
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|---|---|---|---|---|
| EP0933157A1 (en) * | 1997-07-16 | 1999-08-04 | Osg Corporation | Cold forming tap with inside diameter finish blade and method of manufacturing same |
| CN1381330A (en) * | 2002-06-05 | 2002-11-27 | 陈介华 | Technology for machining squeeze screw tap |
| WO2006117850A1 (en) * | 2005-04-27 | 2006-11-09 | Osg Corporation | Cold forming tap and method of manufacturing the same |
| CN101712089A (en) * | 2009-11-18 | 2010-05-26 | 西安工业大学 | Spiral fluted tap and method for processing same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006009986B4 (en) * | 2006-03-03 | 2010-04-01 | Erwin Junker Maschinenfabrik Gmbh | Method for back grinding the cutting teeth of taps, thread formers and similar tools, and grinding machine for carrying out the method |
| WO2014013549A1 (en) * | 2012-07-17 | 2014-01-23 | オーエスジー株式会社 | Spiral tap and manufacturing method therefor |
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2017
- 2017-06-30 CN CN201710523708.9A patent/CN107309713B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0933157A1 (en) * | 1997-07-16 | 1999-08-04 | Osg Corporation | Cold forming tap with inside diameter finish blade and method of manufacturing same |
| CN1381330A (en) * | 2002-06-05 | 2002-11-27 | 陈介华 | Technology for machining squeeze screw tap |
| WO2006117850A1 (en) * | 2005-04-27 | 2006-11-09 | Osg Corporation | Cold forming tap and method of manufacturing the same |
| CN101712089A (en) * | 2009-11-18 | 2010-05-26 | 西安工业大学 | Spiral fluted tap and method for processing same |
Non-Patent Citations (2)
| Title |
|---|
| 挤压丝锥的数控磨削成形技术研究;赵文昌等;《工具技术》;20130920(第09期);第30-33页 |
| 整体硬质合金挤压丝锥的设计工艺;肖思来等;《工具技术》;20050428(第04期);第52-55页 |
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