CN109551064A - The broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter - Google Patents
The broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter Download PDFInfo
- Publication number
- CN109551064A CN109551064A CN201811579777.2A CN201811579777A CN109551064A CN 109551064 A CN109551064 A CN 109551064A CN 201811579777 A CN201811579777 A CN 201811579777A CN 109551064 A CN109551064 A CN 109551064A
- Authority
- CN
- China
- Prior art keywords
- milling
- screw thread
- nonstandard
- internal screw
- major diameter
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/32—Thread cutting; Automatic machines specially designed therefor by milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps
- B23G1/18—Machines with one working spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a kind of broach-milling processing methods of the nonstandard dextrorotation internal screw thread of major diameter, are processed using the broach-milling that the process tool system of the nonstandard screw thread of major diameter carries out the nonstandard dextrorotation internal screw thread of major diameter；Milling cutter is moved into the internal screw thread most the inside i.e. position of bottom first by it；Then milling cutter moves radially feed, touches bottom outlet inner surface and starts to cut；Meanwhile milling cutter revolves around inner hole centreline, every public affairs circle moves the distance of a screw pitch inside-out, until milling cutter is moved to outermost i.e. oral area, completes whole processing of internal screw thread.Processing method of the present invention has the advantages that Milling Process, and workpiece accuracy and surface roughness are high, and tool life is high, and complex art works well.
Description
Technical field
The invention belongs to large diameter and inner thread manufacture fields, and in particular to a kind of broach-milling of the nonstandard dextrorotation internal screw thread of major diameter
Processing method.Major diameter is 200mm diameter above.
Background technique
Currently, generally using tool path pattern from outside to inside when traditional milling internal screw thread, mill principal axis is gradually released at this time,
Traditional structure can be used in screw cutter.It should use suitable to improve thread surface processing quality and milling cutter service life, milling thread
Milling mode is processed.When common machine tool chief axis uses traditional structure milling cutter, the above-mentioned internal screw thread of milling from outside to inside is for left-handed
Screw thread is climb cutting processing, is then upmilling processing for right-handed thread.For realize the climb cutting of dextrorotation internal screw thread processing, milling cutter need to from it is inner to
Outer feed, mill principal axis gradually retracts at this time, i.e., broach-milling processes screw thread.Broach-milling process when milling cutter axially loaded with push away Milling Machining phase
Instead, conventional tool structure is no longer able to satisfy its demand, need to improve to cutter structure.
Summary of the invention
The present invention provides a kind of broach-milling processing method of nonstandard dextrorotation internal screw thread of major diameter, solves milling cutter axially loaded and pushes away
Milling Machining is on the contrary, the problem of being not suitable for the major diameter processed from inside to outside nonstandard dextrorotation internal screw thread.
In order to solve the above technical problems, the present invention provides a kind of broach-milling processing sides of the nonstandard dextrorotation internal screw thread of major diameter
Method, which is characterized in that specifically include following steps；
S1: clamping workpiece blank；
S2: thick, finish-milling blank end face；
S3: inner hole is rough milled；
S4: finish-milling inner hole；
S5: threaded hole is rough milled using dedicated tool system；
Milling cutter, which is moved into inner hole of workpiece, first needs the bottom position of machining internal thread；Then milling cutter move radially into
Knife, touching needs thread mill drilling inner surface and starts to cut；Meanwhile milling cutter around inner hole centreline revolve, every public affairs circle from
In be displaced outwardly the distance of a screw pitch, until milling cutter is moved to outermost i.e. oral area, the whole of internal screw thread is completed in circulation feeding
Processing；
S6: using process finish-milling threaded hole identical with S5 to needing size.
The utility model has the advantages that the present invention has the advantages that Milling Process, workpiece accuracy and surface roughness are high, tool life
Height, complex art work well.Effect of the blade by axial resistance to cutting can be fine by being pressed against on cutter hub tightly
The loosening and displacement that ground avoids the blade of traditional milling cutter from generating due to axial tension.Due to the tooling system be to screw thread carry out by
Interior and outer Milling Process, this processing method will have the advantages that Milling Process.The processing is added using 8 sword tooling systems
Work, blade are cut in turn, automatically generate chip breaking, will not have to the chip breaking problem for considering traditional Internal Threading.And the cutter system
The blade good cooling results of system, be easy to by blade temperature control hard alloy cutter allowable work temperature (800 DEG C) below.
Make machining condition be conducive to cut, tool life can be improved in this way.Milling Process machining accuracy with higher, it is economical
Machining accuracy is generally IT9-IT7, and surface roughness Ra value is generally 6.3-3.2um.Fine Milling Accuracy is up to IT5, surface
Roughness Ra value can reach 1.6um.The climb cutting processing nonstandard internal screw thread of major diameter dextrorotation can be well realized in this tooling system,
And cutting-tool's used life height and internal thread machining surface quality can be significantly improved.
Detailed description of the invention
Fig. 1 is the dedicated tool system structure schematic diagram main view of the broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter
Figure；
Fig. 2 is the dedicated tool system structure schematic diagram axonometric drawing of the broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter；
Fig. 3 is the dedicated tool system structure schematic diagram left view of the broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter；
Fig. 4 is the structure diagram axonometric drawing of cutterhead 3；
Fig. 5 is the structure diagram main view of cutterhead 3；
Fig. 6 is the 3 structure diagram right view of cutterhead at 5 visual angle of corresponding diagram；
Fig. 7 is the 3 structure diagram cross-sectional view of cutterhead at 5 visual angle of corresponding diagram；
Fig. 8 is typical process case schematic illustration；
Fig. 9 is 1 structure diagram axonometric drawing of cutting plate for milling cutters described in embodiment 1；
Figure 10 is 1 structure diagram main view of cutting plate for milling cutters described in embodiment 1；
Figure 11 is 1 structure diagram bottom view of cutting plate for milling cutters described in embodiment 1；
Figure 12 is the nonstandard dextrorotation internal screw thread tooth form structure diagram of major diameter described in embodiment 1；
Figure 13 is the blank drawing before the broach-milling processing method application of the nonstandard dextrorotation internal screw thread of major diameter described in embodiment 1；
Figure 14 is the internal screw thread letter after the broach-milling processing method application of the nonstandard dextrorotation internal screw thread of major diameter described in embodiment 1
Figure；
Figure 15 is 1 structure diagram axonometric drawing of cutting plate for milling cutters described in embodiment 2；
Figure 16 is 1 structure diagram main view of cutting plate for milling cutters described in embodiment 2；
Figure 17 is 1 structure diagram bottom view of cutting plate for milling cutters described in embodiment 2；
Figure 18 is the nonstandard dextrorotation internal thread structure schematic diagram of major diameter described in embodiment 2.
Specific embodiment
To keep the purpose of the present invention, content and advantage clearer, a specific embodiment of the invention is made into one below
Step detailed description.
A kind of broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter proposed by the present invention, specific manufacturing procedure are as follows:
Process 1: clamping blank.
The material of Figure 13 blank is high strength steel.
Process 2: thick, finish-milling blank end face guarantees size 102mm.
Process 3: rough milling inner hole φ 220mm to φ 255mm, and guarantee circular hole depth dimensions are 102mm.
Process 4: finish-milling inner hole φ 255mm to φ 260mm, guarantee circular hole depth dimensions are 102mm.
Process 5: the threaded hole for rough milling φ 270 using dedicated tool system guarantees circular hole depth dimensions to φ 265mm
102mm；
Process 6: the threaded hole of finish-milling φ 270mm to φ 270mm guarantees circular hole depth dimensions 102mm；
For in process 5, process 6, inner screw thread milling process,
Milling cutter, which is moved into inner hole of workpiece, first needs machining internal thread most the inside i.e. bottom position, i.e. screw initial thread end A；So
Milling cutter moves radially feed afterwards, and bottom thread hole wall C need to be processed by touching, and start to cut；Meanwhile milling cutter is around inner hole center
Line revolution, every public affairs circle moves the distance of a screw pitch inside-out, until milling cutter is moved to thread termination end B, i.e. oral area,
Whole processing of internal screw thread are completed in circulation feeding；F is axial feed of the tool direction.
The dedicated tool system includes cutting plate for milling cutters 1, housing screw 2, cutterhead 3, washer 4, attachment screw 5, key 6, spiral shell
Follow closely 7, knife handle 8；Wherein:
Knife handle 8 is shaft-like structural member, is located at the rearmost part of the process tool system of the nonstandard screw thread of the major diameter；Cutterhead
3 be disk-shaped structure part, is provided with blade installation slot 10 at least one, and cutting plate for milling cutters 1 is arranged in blade installation slot 10；Knife
Handle 8 and cutterhead 3 are the coaxial configuration of coaxial line；
It is integrated between cutterhead 3 and knife handle 8 by circumferentially fixed structure and key 6, the assembly of screw 7；
Cutting plate for milling cutters 1 is designed according to nonstandard dextrorotation internal screw thread form of thread；Blade installation slot 10 and milling cutter knife in cutterhead 3
The shape of piece 1 is adapted；Blade installation slot 10 on cutterhead 3 is also no longer that conventional front-end is open and is changed to open rearward end, that is, is existed
The blade installation slot 10 being arranged on cutterhead 3 is open towards the side 10d close to knife handle 8, and the side far from knife handle 8 is in circumferential direction
Outside boss 10b is equipped with for blade installation slot 10；It can guarantee when broach-milling internal screw thread that cutting plate for milling cutters 1 will not be by this way
It is excessive in axial tension and generate loosening, to influence processing effect；Mounting surface 10a is equipped with threaded hole 10c；Using this knot
When structure design milling cutter carries out Milling Process to nonstandard internal screw thread from inside to outside, effect of the blade by axial resistance to cutting is tight
Tight is pressed against on cutter hub, the loosening and displacement that the blade of traditional milling cutter can be avoided to generate due to axial tension well.
Fig. 4-7 is the detailed structure schematic diagram of cutterhead 3, and the cutterhead 3 in the present invention is different from traditional cutterhead, traditional cutterhead
Cutter groove is front opening, and the blade installation slot 10 in cutterhead 3 of the invention is open rearward end.
Fig. 8 is embodiments of the present invention citing, the nonstandard internal screw thread of the dextrorotation that workpiece 9 is processed a major diameter.It is right
The nonstandard internal screw thread of this dextrorotation is using climb cutting processing method from inside to outside.Tooling system is put in the workpiece to be processed in processing
9 inner hole bottom, milling cutter move radially feed, touch bottom outlet inner surface and start to cut.Meanwhile milling cutter is around inner hole centreline public affairs
Turn, every public affairs circle moves the distance of a screw pitch inside-out, until milling cutter is moved to outermost i.e. oral area, completes internal screw thread
Whole processing.
8 tooth milling cutter (Fig. 2) of tool selection, the i.e. number of cutting plate for milling cutters 1 are 8 and are circumferentially evenly arranged on cutterhead 3.
The hardness of medium carbon steel is 225~290HB, and the Milling Speed of the carbide-tipped milling cutter of milling medium carbon steel is generally 100
~180m/min；The hardness of high-carbon steel is 325~375HB, and the Milling Speed of the carbide-tipped milling cutter of milling high-carbon steel is generally
80~150m/min；The hardness of steel alloy is 325~425HB, and the Milling Speed of the carbide-tipped milling cutter of milling steel alloy is general
For 80~100m/min；
1 number of cutting plate for milling cutters is 8 in the process tool system of the nonstandard screw thread of major diameter, and the major diameter is nonstandard
The process tool system of screw thread is integrally that the diameter of milling cutter is 130mm, and superficial velocity is set as 120 ± 20m/min, i.e. cutter master
Axis revolving speed is about 400 ± 50r/min；Feed engagement is 0.06 ± 0.02, and axial feed velocity is 5 ± 1.2m/min.
In the broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter, as internal thread hole major diameter 270mm in workpiece 9,
When path 260mm, screw pitch 9m, length 102mm；Speed of cutter spindle 400r/min, feed engagement 0.08, axial feed speed
Degree is 5m/min.
There are two types of implementation cases for the broach-milling processing of dextrorotation internal screw thread nonstandard for the major diameter of high strength steel (34CrNiMo6)
Example, embodiment 1 are to process screw thread as the good nonstandard dextrorotation internal screw thread using 12 degree of positioning surfaces of self-locking performance, and processing use can be cut
Cut out the special blade (Fig. 9, Figure 10, Figure 11) of 12 degree of positioning surfaces.Embodiment 2 is that processing screw thread is with higher screw-in efficiency
Using the nonstandard dextrorotation internal screw thread of 15 degree of angle positioning surfaces, processing goes out special blade (Figure 15, figure of 15 degree of positioning surfaces using machinable
16, Figure 17).
Process 7: deburring, cleaning.
Process 8: final inspection.
Finally obtain the nonstandard dextrorotation internal screw thread (Figure 14) of major diameter.The nonstandard dextrorotation internal screw thread tooth form of the major diameter of embodiment 1
For 12 degree of positioning surfaces (Figure 12), the nonstandard dextrorotation internal screw thread tooth form of the major diameter of embodiment 2 is 15 degree of positioning surfaces (Figure 18).
Since the tooling system is the Milling Process carried out to screw thread from inside to outside, this processing method will have milling
The advantages of processing, the processing are processed using 8 sword tooling systems, and blade is cut in turn, automatically generate chip breaking, will not have to consider tradition
The chip breaking problem of Internal Threading.And the blade good cooling results of the tooling system, it is easy to control blade temperature in hard
The allowable work temperature (800 DEG C) of alloy cutter is below.Make machining condition be conducive to cut, it is durable that cutter can be improved in this way
Degree.Milling Process machining accuracy with higher, economic accuracy of machining are generally IT9-IT7, and surface roughness Ra value is general
For 6.3-3.2um.For fine Milling Accuracy up to IT5, surface roughness Ra value can reach 1.6um.This tooling system can be very
It realizes that the nonstandard internal screw thread of major diameter dextrorotation is processed in climb cutting well, and cutting-tool's used life height can be significantly improved and internal screw thread adds
Work surface quality.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter, which is characterized in that specifically include following steps；
S1: clamping workpiece blank；
S2: thick, finish-milling blank end face；
S3: inner hole is rough milled；
S4: finish-milling inner hole；
S5: threaded hole is rough milled using dedicated tool system；
Milling cutter, which is moved into inner hole of workpiece, first needs the screw initial thread end of machining internal thread bottom；Then milling cutter move radially into
Knife, touching needs thread mill drilling inner wall and starts to cut；Meanwhile milling cutter revolves around inner hole centreline, every public affairs circle from inner
It is displaced outwardly the distance of a screw pitch, until milling cutter is moved to outmost thread termination end, internal screw thread is completed in circulation feeding
Processing；
S6: using process finish-milling threaded hole identical with S5 to needing size.
2. a kind of broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter according to claim 1, which is characterized in that hair
The material of base is high strength steel.
3. a kind of broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter according to claim 1, which is characterized in that essence
Deburring behind thread milling hole, cleaning workpiece.
4. a kind of broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter according to claim 1, which is characterized in that institute
Stating dedicated tool system includes cutting plate for milling cutters 1, cutterhead 3, knife handle 8；Knife handle 8 and cutterhead 3 are fixedly and coaxially connected；Cutterhead 3 is dish type
Structural member, circumferential direction are provided with blade installation slot 10 at least one, and cutting plate for milling cutters 1 is arranged in blade installation slot 10；Milling cutter knife
Piece 1 is designed according to nonstandard dextrorotation internal screw thread form of thread；Blade installation slot 10 and the shape of cutting plate for milling cutters 1 in cutterhead 3 are mutually fitted
It answers；Blade installation slot 10 on cutterhead 3 towards the side opening close to knife handle 8, and blade installation slot 10 far from knife handle 8 one
Side is equipped with protrusion.
5. a kind of broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter according to claim 4, which is characterized in that knife
Handle 8 is shaft-like structural member.
6. a kind of broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter according to claim 4, which is characterized in that knife
It is integrated between disk 3 and knife handle 8 by circumferentially fixed structure and key 6, the assembly of screw 7.
7. a kind of broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter according to claim 4, which is characterized in that milling
The number of knife blade 1 is 8 and is circumferentially evenly arranged on cutterhead 3.
8. a kind of broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter according to claim 1-7, special
Sign is, when milling medium carbon steel, the Milling Speed of milling cutter is 100~180m/min；The Milling Speed of milling cutter when milling high-carbon steel
For 80~150m/min；When milling steel alloy, the Milling Speed of milling cutter is 80~100m/min.
9. a kind of broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter according to claim 8, which is characterized in that when
When the internal thread hole major diameter 270mm, path 260mm, screw pitch 9m, length 102mm of workpiece；Speed of cutter spindle 400r/min, often
The tooth amount of feeding is 0.08, axial feed velocity 5m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579777.2A CN109551064A (en) | 2018-12-24 | 2018-12-24 | The broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811579777.2A CN109551064A (en) | 2018-12-24 | 2018-12-24 | The broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109551064A true CN109551064A (en) | 2019-04-02 |
Family
ID=65870930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811579777.2A Pending CN109551064A (en) | 2018-12-24 | 2018-12-24 | The broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109551064A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112643294A (en) * | 2020-12-11 | 2021-04-13 | 北京星航机电装备有限公司 | Precise machining method for spiral groove in multi-wire large-lead narrow deep cavity structure |
| CN114147240A (en) * | 2021-10-26 | 2022-03-08 | 内蒙古北方重工业集团有限公司 | Non-equal-division multi-head small-pitch inner spiral surface scribing method |
| CN114888368A (en) * | 2022-05-07 | 2022-08-12 | 贵州永红航空机械有限责任公司 | Method for improving cutting machining precision of CG internal threads made of stainless steel material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000280121A (en) * | 1999-03-29 | 2000-10-10 | Toyota Motor Corp | Thread cutting and cutting apparatus therefor |
| CN101274380A (en) * | 2007-03-28 | 2008-10-01 | 南车四方机车车辆股份有限公司 | Inner screw thread milling technique |
| CN102962532A (en) * | 2012-11-28 | 2013-03-13 | 北京航天新风机械设备有限责任公司 | Grinding method for forming small-hole thread of hard and brittle material |
| CN103357928A (en) * | 2013-06-27 | 2013-10-23 | 中广核工程有限公司 | Method for repairing main screw hole of reactor pressure vessel |
| CN204397100U (en) * | 2014-12-05 | 2015-06-17 | 绵阳市精锐数控工具制造有限公司 | A kind of buttless thread milling cutter |
| CN108723521A (en) * | 2017-04-14 | 2018-11-02 | 成都道勤数控刀具有限公司 | A kind of thread milling cutter |
-
2018
- 2018-12-24 CN CN201811579777.2A patent/CN109551064A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000280121A (en) * | 1999-03-29 | 2000-10-10 | Toyota Motor Corp | Thread cutting and cutting apparatus therefor |
| CN101274380A (en) * | 2007-03-28 | 2008-10-01 | 南车四方机车车辆股份有限公司 | Inner screw thread milling technique |
| CN102962532A (en) * | 2012-11-28 | 2013-03-13 | 北京航天新风机械设备有限责任公司 | Grinding method for forming small-hole thread of hard and brittle material |
| CN103357928A (en) * | 2013-06-27 | 2013-10-23 | 中广核工程有限公司 | Method for repairing main screw hole of reactor pressure vessel |
| CN204397100U (en) * | 2014-12-05 | 2015-06-17 | 绵阳市精锐数控工具制造有限公司 | A kind of buttless thread milling cutter |
| CN108723521A (en) * | 2017-04-14 | 2018-11-02 | 成都道勤数控刀具有限公司 | A kind of thread milling cutter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112643294A (en) * | 2020-12-11 | 2021-04-13 | 北京星航机电装备有限公司 | Precise machining method for spiral groove in multi-wire large-lead narrow deep cavity structure |
| CN114147240A (en) * | 2021-10-26 | 2022-03-08 | 内蒙古北方重工业集团有限公司 | Non-equal-division multi-head small-pitch inner spiral surface scribing method |
| CN114147240B (en) * | 2021-10-26 | 2024-02-06 | 内蒙古北方重工业集团有限公司 | Non-equally divided multi-head small-pitch internal spiral surface cutting processing method |
| CN114888368A (en) * | 2022-05-07 | 2022-08-12 | 贵州永红航空机械有限责任公司 | Method for improving cutting machining precision of CG internal threads made of stainless steel material |
| CN114888368B (en) * | 2022-05-07 | 2023-08-04 | 贵州永红航空机械有限责任公司 | Method for improving machining precision of stainless steel CG internal thread |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220161336A1 (en) | Rotary cutter for machining materials | |
| CN109551064A (en) | The broach-milling processing method of the nonstandard dextrorotation internal screw thread of major diameter | |
| US5098232A (en) | Thread cutting tool | |
| CN102962532B (en) | Grinding method for forming small-hole thread of hard and brittle material | |
| CN102848160B (en) | Wave blade-shaped end mill processing method | |
| US20130170916A1 (en) | Unequal Helix-Angle End Mill | |
| JP2010522096A (en) | Method and assembly for rotating a cutting insert during a turning operation and insert used therefor | |
| CN102029421B (en) | Moulding milling cutter | |
| CN211248471U (en) | Cutter for efficient composite hole making | |
| CN103286389B (en) | The externally threaded processing method of high-speed turning bull large pitch shallow/deep groove type | |
| CN113510283B (en) | Cutting tool and cutting process for titanium alloy material | |
| CN203578841U (en) | Portable electric spiral track hole-drilling device | |
| CN103056433B (en) | Machining method for conical inclined crown of blade | |
| CN202317325U (en) | Single-edge trapezoidal thread milling cutter | |
| CN101700579B (en) | High-precision hole-machining drilling and boring cutter | |
| CN110977062B (en) | Large-diameter thread single-feed rapid turning tool and method | |
| CN201950257U (en) | Formed cutter | |
| CN111014794A (en) | Special cutter for machining deep groove in outer wall of titanium alloy thrust chamber | |
| CN112191956A (en) | Thread milling cutter for high-temperature nickel-based alloy | |
| CN209681263U (en) | A kind of forming groove cutter of end face groove | |
| CN206028833U (en) | Novel milling cutter | |
| RU158628U1 (en) | END MILL WITH CHANGEABLE CUTTING PLATES WITH HIGH RESISTANCE | |
| CN209830521U (en) | Large-diameter non-standard right-handed internal thread broaching and milling cutter system | |
| CN207723545U (en) | Ream flat cutter has | |
| CN207508376U (en) | A kind of high speed roughing feed milling cutter |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190402 |