CN102814559A - Threading tool bit, lathe tool and method for machining threads - Google Patents
Threading tool bit, lathe tool and method for machining threads Download PDFInfo
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- CN102814559A CN102814559A CN2012102960389A CN201210296038A CN102814559A CN 102814559 A CN102814559 A CN 102814559A CN 2012102960389 A CN2012102960389 A CN 2012102960389A CN 201210296038 A CN201210296038 A CN 201210296038A CN 102814559 A CN102814559 A CN 102814559A
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Abstract
The invention discloses a threading tool bit, a lathe tool and a method for machining threads, and belongs to the technical field of thread machining. The threading tool bit comprises a hilt used for mounting a tool bit on a toolbar, and the shape of a front tool face of the tool bit is identical to that of the normal section of threads to be machined. The shape of the front tool face of the tool bit is identical to that of the normal section of the threads to be machined, so that influence of a lift angle of the threads to a relief angle of a side edge of the tool bit is reduced when the tool bit is used for machining the threads, the thickness of a rear cutting edge is correspondingly increased, rigidity of the lathe tool is improved, the lathe tool is difficult to abrade when machining the threads, and thread machining precision is improved. In addition, the threads are machined by a slotting tool and a rough machining tool bit alternately, so that the tool bit is difficult to abrade, and the service life of the tool bit is prolonged. Besides, the threads are roughly machined by an axial left-right expanding cutting method, three faces of the tool bit are prevented from participating in cutting, the area of a portion of the tool bit in contact with a workpiece is reduced, cutting resistance is also reduced, chips are difficult to accumulate, and the tool is difficult to break.
Description
Technical field
The present invention relates to the screw thread processing technique field, the method for particularly a kind of threading tool cutter head, lathe tool and machining screw.
Background technology
Lathe tool is one of most widely used cutter in the turning processing.Lathe tool generally comprises billmpse tool, shoulder lathe tool, facing tool, grooving cutter, parting-off tool, threading tool etc.
Wherein, threading tool comprises cutter head that is used to cut and the knife bar that is used for clamping.The shape that the rake face of the cutter head of existing threading tool is normally identical with the shaft section of screw thread to be processed during machining screw, is installed to cutter head on the knife bar on workpiece, and makes the rake face of cutter head cross the axis of rotation of workpiece.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Interfere for fear of threading tool cutter head side edge face and lead angle, the side edge relief angle of cutter head is generally equal to lead angle and adds and avoid the angle of interfering, when the bigger screw thread of machining screw lift angle; The side edge relief angle of threading tool increases thereupon, thereby causes rear knife edge very thin, and the rigidity of cutter head is very poor; Work in-process; Wear and tear easily, and then cause the screw thread that cuts to produce error, reduced the precision of processing.
Summary of the invention
In order to overcome thin, the poor rigidity of the lathe tool cutter head blade that is used for the bigger screw thread of machining screw lift angle in the prior art; Easy to wear when machining screw; And then causing the low problem of accuracy of screw machining, the embodiment of the invention provides the method for a kind of threading tool cutter head, lathe tool and machining screw.Said technical scheme is following:
On the one hand, the embodiment of the invention provides a kind of threading tool cutter head, comprises the cutter head body and is used for fixing the handle of a knife on knife bar, and the shape of the rake face of said cutter head body is identical with the shape of the normal section of screw thread to be processed.
Particularly, said cutter head comprises roughing cutter head or fine finishining cutter head.
On the other hand; The embodiment of the invention also provides a kind of threading tool; Comprise knife bar and cutter head, said cutter head comprises first cutter head, and the shape of the rake face of said first cutter head is identical with the shape of screw thread normal section to be processed; Said cutter head is installed in an end of said knife bar, and the acute angle that rake face and the basal plane of said cutter head are formed equals the lead angle of said screw thread to be processed.
Preferably, said knife bar and said cutter head are split-type structural, and said cutter head comprises said cutter head body and handle of a knife, and an end of said knife bar is provided with installing hole, and said handle of a knife is removably mounted on the said knife bar through said installing hole.
Particularly, said first cutter head is roughing cutter head or fine finishining cutter head.
Particularly, said cutter head also comprises second cutter head, and said second cutter head is the grooving cutter cutter head.
Preferably, said handle of a knife is provided with groove, and corresponding said groove is provided with locating hole on the said knife bar, and said handle of a knife is fixed on the said knife bar through said locating hole and dog screw.
On the one hand, the embodiment of the invention also provides a kind of method of machining screw again, and said method comprises:
(1) adopts the grooving cutter cutter head on workpiece to be processed, repeatedly to process helicla flute, reach first order working depth up to the said spiral fluted degree of depth with identical bite;
(2) adopt the roughing cutter head that the said helicla flute that step (1) processes is repeatedly processed, the bite of processing is identical with the bite of step (1) each time;
(3) repeating step (1)-(2) are the degree of depth of second level processing and the degree of depth sum of said first order processing up to the said spiral fluted degree of depth; Carry out the processing of next stage successively, up to the thread height-surplus of the said spiral fluted degree of depth=screw thread to be processed;
(4) adopt the fine finishining cutter head that said helicla flute is repeatedly processed, up to the thread height of the said spiral fluted degree of depth=screw thread to be processed.
Particularly, when adopting the grooving cutter cutter head on workpiece to be processed, repeatedly to process helicla flute, saidly each time add body of tool and comprise with identical bite:
Said grooving cutter according to said bite radially vertical cut go out a said helicla flute, in the degree of depth of said bite said helicla flute is carried out the left side successively and axially expands to cut and cut to expansion with right axis, process next said helicla flute then.
Particularly, when adopting the roughing cutter head that the said helicla flute that step (1) processes is repeatedly added man-hour, the said body of tool that adds each time comprises:
Successively each said helicla flute is carried out axial expansion the in the left side earlier and cut, carry out right axis again and cut to expansion.
Preferably, along with the increase of processing progression, each grade working depth reduces successively.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: be made as identical with the shape of the normal section of screw thread to be processed through the shape with the rake face of cutter head; When utilizing this cutter head machining screw, reduced the influence of lead angle, the corresponding thickness that increases rear knife edge to the side edge relief angle of cutter head; Thereby strengthened the rigidity of cutter head; When machining screw, cutter head is not easy to wear, has improved the machining accuracy of screw thread.And during the classification machining screw, utilize the alternately processing of grooving cutter and roughing cutter head, make that grooving cutter and roughing cutter head are not easy to wear, increased the life-span of cutter head.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of threading tool cutter head of providing in the embodiment of the invention 1;
Fig. 2 is the sketch map of the normal section of the screw thread to be processed that provides in the embodiment of the invention 1;
Fig. 3 is the front view of the fine finishining cutter head that provides in the embodiment of the invention 1;
Fig. 4 is the vertical view of the fine finishining cutter head that provides in the embodiment of the invention 1;
Fig. 5 is the front view of the roughing cutter head that provides in the embodiment of the invention 2;
Fig. 6 is the vertical view of the roughing cutter head that provides in the embodiment of the invention 2;
Fig. 7 is the structural representation of a kind of threading tool of providing of the embodiment of the invention 3;
Fig. 8 is the structural representation of the cutter head that provides in the embodiment of the invention 3;
Fig. 9 is the structural representation of the knife bar that provides in the embodiment of the invention 3;
Figure 10 is the front view of the grooving cutter cutter head that provides in the embodiment of the invention 3;
Figure 11 is the vertical view of the grooving cutter cutter head that provides in the embodiment of the invention 3;
Figure 12 is the method flow diagram of a kind of machining screw of providing in the embodiment of the invention 4;
Figure 13 is the sketch map of the classification that provides in the embodiment of the invention 4.
In the accompanying drawing, the assembly of each label representative is as shown in the table:
1 cutter head body; 12 side edge faces; 13 rake faces; 14 rear knife edges; 2 handle of a knifes; 21 grooves; 3 knife bars; 31 installing holes; 32 locating holes; 41 longitudinal center lines; 42 helixes; 43 planes; 5 fine finishining cutter heads; 6 roughing cutter heads; 7 grooving cutter cutter heads; 10 cutter heads.
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
The embodiment of the invention provides a kind of threading tool cutter head, and referring to Fig. 1, this cutter head comprises cutter head body 1 and be used for fixing the handle of a knife 2 on knife bar 3 that the shape of the rake face 13 of cutter head body 1 is identical with the shape of the normal section of screw thread to be processed.
Particularly, referring to Fig. 2, the normal section of screw thread to be processed is meant: screw thread to be processed and longitudinal center line 41 through screw thread to be processed and perpendicular to the crossing face on the plane 43 of the helix 42 of this screw thread to be processed.
Particularly, cutter head body 1 comprises rake face 13 and side edge face 12, does not interfere with lead angle in order to guarantee side edge face 12; Promptly need grind angle at this face; Be side edge relief angle (referring to the angle that the side edge face is become with the smear metal plane), if rake face 13 is made as the shaft section shape of screw thread to be processed, side edge relief angle=lead angle+then for avoiding interfering the relief angle of being opened; If rake face 13 is made as the normal section shape of screw thread to be processed; When using this cutter head, (be to be used for defining one of reference planes in the stationary reference frame of lathe tool geometric parameter, basal plane is meant through Chosen Point on the cutting edge to make rake face 13 and basal plane; Perpendicular to the plane of this cutting speed direction, being parallel to the installed surface (bottom surface) of lathe tool usually) the acute angle B (referring to Fig. 7) that forms equals the lead angle of screw thread to be processed., then the side edge relief angle is just only considered the influence of interference, thereby has correspondingly increased the thickness of rear knife edge 14, the rigidity of cutter head improves, and is not easy to wear.
Particularly, in the present embodiment, referring to Fig. 3 and Fig. 4, this cutter head is a roughing cutter head 6.In concrete the realization, the radial rake A of roughing cutter head 6 is generally 5 °.When using roughing cutter head 6 processing works, the iron filings that produce during this angle helps processing are discharged along this angle.
The embodiment of the invention is made as identical with the shape of the normal section of screw thread to be processed through the shape with the rake face of cutter head; When utilizing this cutter head machining screw, reduced the influence of lead angle, the corresponding thickness that increases rear knife edge to the side edge relief angle of cutter head; Thereby strengthened the rigidity of cutter head; When machining screw, cutter head is not easy to wear, has improved the machining accuracy of screw thread.
The embodiment of the invention provides a kind of threading tool cutter head; Referring to Fig. 5 and Fig. 6, the threading tool cutter head that provides in the present embodiment is a fine finishining cutter head 5, and the threading tool cutter head that provides among the structure of fine finishining cutter head 5 and the embodiment 1 is basic identical; Difference only is; The radial rake A of fine finishining cutter head 5 is 0 °, thereby can guarantee that accurately machined form of thread is accurate, reduces the form of thread error.
The embodiment of the invention is made as identical with the shape of the normal section of screw thread to be processed through the shape with the rake face of cutter head; When utilizing this cutter head machining screw, reduced the influence of lead angle, the corresponding thickness that increases rear knife edge to the side edge relief angle of cutter head; Thereby strengthened the rigidity of cutter head; When machining screw, cutter head is not easy to wear, has improved the machining accuracy of screw thread.
The embodiment of the invention provides a kind of threading tool; Referring to Fig. 7; This lathe tool comprises knife bar 3 and cutter head 10, and cutter head 10 comprises first cutter head, and the shape of the rake face 13 of first cutter head is identical with the shape of the normal section of screw thread to be processed; Cutter head 10 is installed in an end of knife bar 3, and the acute angle B of the rake face 13 of cutter head 10 and basal plane formation equals the lead angle of screw thread to be processed.
Particularly, basal plane is to be used for defining one of reference planes in the stationary reference frame of lathe tool geometric parameter, and basal plane is meant through Chosen Point on the cutting edge, perpendicular to the plane of this cutting speed direction, is parallel to the installed surface (bottom surface) of lathe tool usually.
Preferably, referring to Fig. 8 and Fig. 9, knife bar 3 is a split-type structural with cutter head 10, and cutter head 10 comprises cutter head body 1 and handle of a knife 2, and an end of knife bar 3 is provided with installing hole 31, and handle of a knife is removably mounted on the knife bar 3 through installing hole 31.Through installing hole 31 cutter head 10 is installed on the knife bar 3, is convenient to solve the tool changing problem after cutter head 10 weares and teares, improve the efficient of tool changing and the efficient of processing.
Particularly, first cutter head is roughing cutter head or fine finishining cutter head.Particularly, the cutter head of fine finishining cutter head for providing among the embodiment 1, the cutter head of roughing cutter head for providing among the embodiment 2.
Particularly, cutter head 10 also comprises second cutter head, and second cutter head is a grooving cutter cutter head 7.
Further, offer groove 21 on the handle of a knife 2, respective slot 21 is provided with locating hole 32 on the knife bar 3, and handle of a knife 2 is fixed on the knife bar 3 through locating hole 32 and dog screw (figure does not show).Through locating hole 32 and dog screw handle of a knife 2 is positioned, make cutter head 10 when work, can relative motion not take place with knife bar 3.
The embodiment of the invention is made as identical with the shape of the normal section of screw thread to be processed through the shape with the rake face of cutter head; When utilizing this cutter head machining screw, reduced the influence of lead angle, the corresponding thickness that increases rear knife edge to the side edge relief angle of cutter head; Thereby strengthened the rigidity of cutter head; When machining screw, cutter head is not easy to wear, has improved the machining accuracy of screw thread.And, split type through lathe tool is made as, the tool changing in being convenient to process.
Embodiment 4
The embodiment of the invention provides a kind of method of machining screw, has adopted the lathe tool that provides among the embodiment 3, and shown in figure 12, this method comprises:
Step 101: adopt the grooving cutter cutter head on workpiece to be processed, repeatedly to process helicla flute, reach first order working depth up to the spiral fluted degree of depth with identical bite.
Particularly, adding body of tool each time comprises:
Grooving cutter according to bite radially vertical cut go out a helicla flute, in the degree of depth of bite helicla flute is carried out the left side successively and axially expands to cut and cut to expansion with right axis, process next helicla flute then.
Particularly, can the grooving cutter cutter head be installed on the knife bar, promptly obtain grooving cutter.
In this step, first order processing is divided into repeatedly machines again, the degree of depth/number of times of the spiral fluted degree of depth of each processing=first order processing is bite.Radially during vertical cut, the position of each feed is the centre position of screw thread to grooving cutter.For example the degree of depth of first order processing is 0.5mm, and then the spiral fluted degree of depth of each processing is 0.05mm, for the first time in the processing; Grooving cutter is first helicla flute of vertical cut radially; Radially the bite of vertical cut is 0.05mm, then this spiral fluted left side is axially expanded and is cut, and bite is 0.05mm; This spiral fluted the right is axially expanded again and cut, bite still is 0.05mm; First helicla flute of processing is the same together then, processes other helicla flute successively.Follow-up repeatedly add man-hour, still begin processing from first helicla flute, processing method is the same with processing for the first time.Adopt cutter head that the spiral fluted left side or the right are axially expanded when cutting; Have only the main cutting edge of cutter head to participate in cutting, avoided three of cutter heads to participate in cutting simultaneously, reduce the contact area of cutter head and workpiece with one of them front cutting edge; Reduce cutting resistance, strengthened the life-span of cutter head.
Before step 101; Confirm the progression of classification processing and the spiral fluted degree of depth of each grade processing according to workpiece material earlier; Increase along with the progression of processing; The spiral fluted degree of depth of each grade processing reduces, and the thread height-surplus of each grade working depth sum=screw thread to be processed, and surplus is that the material of the cutter head that uses of the material according to workpiece to be processed, surface roughness that workpiece to be processed requires and processing is confirmed.
Preferably, along with the increase of processing progression, each grade working depth reduces successively.Particularly, shown in figure 13, can divide three grades of processing helicla flutes, the spiral fluted degree of depth 51 of first order processing be half of thread height of screw thread to be processed; The spiral fluted degree of depth 52 of second level processing be screw thread to be processed thread height 3/10ths, the helicla flute height after process this moment be screw thread to be processed thread height 4/5ths; / a 5th-surplus 54 of the thread height of the spiral fluted degree of depth 53=screw thread to be processed of third level processing, at this moment, the thread height-surplus 54 of the helicla flute height=screw thread to be processed after the processing.Through the stepped cut helicla flute, reduced the resistance to cutting that receives in the cutting, be not easy breaking, and stepped cut, the iron filings during cutting are discharged easily.
Step 102: adopt the roughing cutter head that the helicla flute that step 101 processes is repeatedly processed, the bite of processing is identical with the bite of step 101 each time.
Particularly, when adopting the roughing cutter head that the helicla flute that step 101 processes is repeatedly added man-hour, add body of tool each time and comprise:
Successively each helicla flute is carried out axial expansion the in the left side earlier and cut, carry out right axis again and cut to expansion.
Particularly, the roughing cutter head is adding man-hour to helicla flute, is the process of repetition grooving cutter, and just the roughing cutter head adds and do not carry out radially vertical cut man-hour, only earlier the spiral fluted left side is axially expanded and is cut, and spiral fluted the right is axially expanded cut then.Axially expand to cut with right axis and cut to expansion through adopting the roughing cutter head to carry out the left side, be difficult for Integrated Chip, and avoided three of the roughing cutter head to participate in cutting simultaneously, cutting resistance is little, and cutter head is not easy to wear.
Particularly, the cutter head of grooving cutter is disassembled from knife bar, the roughing cutter head is installed on the knife bar, the roughing cutter head is processed workpiece then.
Step 101-102 has realized first order processing.
Step 103: repeating step 101-102 is the degree of depth sum of second level working depth and first order processing up to the spiral fluted degree of depth; Carry out the processing of next stage successively, up to the thread height-surplus of the spiral fluted degree of depth=screw thread to be processed.
Particularly, the process of remaining each grade processing all process with first order processing is identical, and just the spiral fluted degree of depth of each grade processing is different.
Through step 101-103, realize the roughing of double thread.In the roughing of screw thread, adopt radially vertical cut with axially about expand and cut the processing method that combines, avoided three of cutter heads to participate in cutting simultaneously, reduce the contact area of lathe tool and workpiece, reduce cutting resistance, the enhancing lathe tool life-span.And grooving cutter is in processing spiral fluted process, is degree of depth of vertical cut radially earlier, expands about carrying out axially to the helicla flute that cuts out then and cuts; Degree of depth of vertical cut radially again expands about carrying out axially then and cuts, through vertical cut radially repeatedly; The spiral fluted height is processed into identical with the height of the tooth form of screw thread to be processed, has avoided because the tooth form height is bigger, grooving cutter is when once radially the degree of depth of vertical cut is identical with the tooth form height; The iron filings that produce in the processing are discharged not smooth, and cutting resistance is big, easily breaking.And in the roughing of screw thread, adopt the alternately processing of grooving cutter cutter head and roughing cutter head, make that grooving cutter and roughing cutter head are not easy to wear, increased the life-span of cutter head.
Step 104: adopt the fine finishining cutter head that helicla flute is repeatedly processed, up to the thread height of the spiral fluted degree of depth=screw thread to be processed.
Particularly, the roughing cutter head is disassembled from knife bar, the fine finishining cutter head is installed on the knife bar.
Realized the fine finishining of double thread through step 104.During fine finishining, adopt the fine finishining cutter head to the advanced conduct of each helicla flute to vertical cut, carry out the left side then and axially expand to cut and cut to expansion with right axis, this process is identical with the process of each grade, is not described in detail in this.It is less that the fine finishining cutter head is participated in the number of times of cutting, reduced the wearing and tearing of cutter head as much as possible, guaranteed the sharp of cutter head, and the mismachining tolerance that has caused owing to the cutter head loss when having reduced machining screw has farthest satisfied the processing request of screw thread.
Need to prove, when the processing method machining screw of using present embodiment to provide, adopt the lathe tool among the embodiment 3, be particularly useful for the bigger screw thread of machining screw lift angle.
The embodiment of the invention is utilized the alternately processing of grooving cutter and roughing cutter head through when the classification machining screw, makes that grooving cutter and roughing cutter head are not easy to wear, has increased the life-span of cutter head; Expand the method roughing screw thread of cutting about adopting axially; Have only the main cutting edge of cutter head to participate in cutting with one of them front cutting edge; Avoided three of cutter heads to participate in cutting simultaneously; Reduce the contact area of cutter head and workpiece, reduced cutting resistance, and made cutter head in the processing of screw thread, be difficult for Integrated Chip and breaking.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a threading tool cutter head comprises the cutter head body and is used for fixing the handle of a knife on knife bar, it is characterized in that the shape of the rake face of said cutter head body is identical with the shape of the normal section of screw thread to be processed.
2. cutter head as claimed in claim 1 is characterized in that, said cutter head is roughing cutter head or fine finishining cutter head.
3. threading tool; Comprise knife bar and cutter head; It is characterized in that said cutter head comprises first cutter head, the shape of the rake face of said first cutter head is identical with the shape of the normal section of screw thread to be processed; Said cutter head is installed in an end of said knife bar, and the acute angle of the rake face of said cutter head and basal plane formation equals the lead angle of said screw thread to be processed.
4. lathe tool as claimed in claim 3; It is characterized in that said knife bar and said cutter head are split-type structural, said cutter head comprises cutter head body and handle of a knife; One end of said knife bar is provided with installing hole, and said handle of a knife is removably mounted on the said knife bar through said installing hole.
5. lathe tool as claimed in claim 4 is characterized in that, said first cutter head is roughing cutter head or fine finishining cutter head.
6. lathe tool as claimed in claim 4 is characterized in that said cutter head also comprises second cutter head, and said second cutter head is the grooving cutter cutter head.
7. lathe tool as claimed in claim 4 is characterized in that, offers groove on the said handle of a knife, and corresponding said groove is provided with locating hole on the said knife bar, and said handle of a knife is fixed on the said knife bar through said locating hole and dog screw.
8. the method for a machining screw is characterized in that, said method comprises:
(1) adopts the grooving cutter cutter head on workpiece to be processed, repeatedly to process helicla flute, reach first order working depth up to the said spiral fluted degree of depth with identical bite;
(2) adopt the roughing cutter head that the said helicla flute that step (1) processes is repeatedly processed, the bite of processing is identical with the bite of step (1) each time;
(3) repeating step (1)-(2) are the degree of depth sum of second level working depth and the processing of the said first order up to the said spiral fluted degree of depth; Carry out the processing of next stage successively, up to the thread height-surplus of the said spiral fluted degree of depth=screw thread to be processed;
(4) adopt the fine finishining cutter head that said helicla flute is repeatedly processed, up to the thread height of the said spiral fluted degree of depth=screw thread to be processed.
9. method as claimed in claim 8 is characterized in that, when adopting the grooving cutter cutter head on workpiece to be processed, repeatedly to process helicla flute with identical bite, saidly each time adds body of tool and comprises:
Said grooving cutter according to said bite radially vertical cut go out a said helicla flute, in the degree of depth of said bite said helicla flute is carried out the left side successively and axially expands to cut and cut to expansion with right axis, process next said helicla flute then.
10. method as claimed in claim 8 is characterized in that, when adopting the roughing cutter head that the said helicla flute that step (1) processes is repeatedly added man-hour, the said body of tool that adds each time comprises:
Successively each said helicla flute is carried out axial expansion the in the left side earlier and cut, carry out right axis again and cut to expansion.
11. method as claimed in claim 8 is characterized in that, along with the increase of processing progression, each grade working depth reduces successively.
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| CN201210296038.9A CN102814559B (en) | 2012-08-17 | 2012-08-17 | A kind of method of machining screw |
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| CN104001995A (en) * | 2014-06-13 | 2014-08-27 | 苏州博睿测控设备有限公司 | High-speed powerful external thread turning tool |
| CN104400028A (en) * | 2014-11-06 | 2015-03-11 | 成都迅德科技有限公司 | Cutting tool for numerical control equipment |
| CN104588790A (en) * | 2014-12-03 | 2015-05-06 | 湖南南方宇航工业有限公司 | Machining method for saw-tooth thread |
| CN105127460A (en) * | 2015-08-25 | 2015-12-09 | 宁波川景誉机械科技发展有限公司 | Mechanical clamp type threading tool |
| CN107398606A (en) * | 2017-06-30 | 2017-11-28 | 武汉船用机械有限责任公司 | A kind of external threading cutter |
| CN110091009A (en) * | 2019-05-16 | 2019-08-06 | 中车青岛四方机车车辆股份有限公司 | A kind of processing method of English system round thread |
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| CN104001995A (en) * | 2014-06-13 | 2014-08-27 | 苏州博睿测控设备有限公司 | High-speed powerful external thread turning tool |
| CN104400028A (en) * | 2014-11-06 | 2015-03-11 | 成都迅德科技有限公司 | Cutting tool for numerical control equipment |
| CN104588790A (en) * | 2014-12-03 | 2015-05-06 | 湖南南方宇航工业有限公司 | Machining method for saw-tooth thread |
| CN105127460A (en) * | 2015-08-25 | 2015-12-09 | 宁波川景誉机械科技发展有限公司 | Mechanical clamp type threading tool |
| CN107398606A (en) * | 2017-06-30 | 2017-11-28 | 武汉船用机械有限责任公司 | A kind of external threading cutter |
| CN110091009A (en) * | 2019-05-16 | 2019-08-06 | 中车青岛四方机车车辆股份有限公司 | A kind of processing method of English system round thread |
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|---|---|
| CN102814559B (en) | 2015-07-29 |
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