CN105643025A - Thread machining blade and machining method thereof - Google Patents
Thread machining blade and machining method thereof Download PDFInfo
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- CN105643025A CN105643025A CN201510678612.0A CN201510678612A CN105643025A CN 105643025 A CN105643025 A CN 105643025A CN 201510678612 A CN201510678612 A CN 201510678612A CN 105643025 A CN105643025 A CN 105643025A
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Abstract
The invention relates to the field of machines, provides a machining blade, and particularly relates to a thread machining blade and a machining method thereof. The thread machining blade comprises a blade body, a plurality of thread cutting edges which are sequentially arranged and used for turning threads are arranged on the cutting chip side of the blade body, and a burr cutter is arranged on the front sides of the thread cutting edges and comprises a compression side burr cutting edge arranged at the front end and a stretching side burr cutting edge which is connected to the position behind the compression side burr cutting edge and can have the effect of eliminating burrs. The thread machining blade and the machining method have the beneficial effects that the burrs caused by thread turning can be completely avoided through the combination cutter; the outwards-turned and inwards-turned burrs can be turned through the compression side burr cutting edge and the stretching side burr cutting edge connected to the position behind the compression side burr cutting edge; and the reasonable overall structure of the cutter can be achieved through the relation of all included angles, and the problems like mutual interference happening in the cutter machining process are prevented.
Description
Technical field
Invention relates to field of mechanical technique, refers to a kind of processing blade, especially a kind of Cutting blade for machining screw thread and working method thereof.
Background technology
Screw thread is spiral yarn shaped, the continuous protruding part with particular cross section made on the surface at cylinder or circular cone parent. Screw thread is divided into straight thread and circular cone screw thread by its parent shape; It is divided into outside screw, internal thread by it in parent present position, it is divided into triangle thread, square thread, trapezoidal thread, saw-tooth thread and other special shape screw threads by its cross-sectional shape (tooth type). Existing screw thread process based on the reason such as the distortion in machining district and the plasticity of chip during metal cutting process, after making fillet surface and screw thread machining successively, the fillet surface at its top and screw thread intersection there will be burr (see figure 1); The severity of this burr is relevant with the angle and Cutting Process parameter etc. that are cut between the plasticity of metal, the cutting angle of chasing tool, thread tooth face and fillet surface.
In the prior art, the method for most widely used removal screw thread top burr is polishing method, namely uses the equipment of abrasive material class or soft material class that burr is done the method polished, but its exist efficiency low, be difficult to the accurately deficiency such as control polishing position. Subsequently, creating the processing method that its top fillet surface is again done micro cutting after screw thread cuts, by the different modes of its cutting feed, it is divided into walking again skill in using a kitchen knife in cookery (see figure 2) and leans on skill in using a kitchen knife in cookery (see figure 3); But the two all has makes burr transfer the problem (see figure 4) of " varus " to by original " turning up ". At present relatively efficient mode is arranged on same knife bar by screw thread cutter and burring knife (see Fig. 9-1 and 9-2), processes after screw thread again with the burring knife fin cutting on same knife bar. Under theoretical case, the relative position of screw thread cutter and burring knife is what determine, but in a practical situation, cutter fixation procedure must exist in error, knife bar gap and easily fall into the off normal that the situations such as foreign material must cause burring knife, before deburring, often need tool setting again.
In a word, screw thread top burr is an old problem that extensively there is, urgently have better Technology solution. No matter it is " walking the skill in using a kitchen knife in cookery " or " by the skill in using a kitchen knife in cookery ", or screw thread cutter and burring knife are installed respectively on same knife bar, all can not in the process completing deburring very succinctly, its tool setting process is loaded down with trivial details, inefficiency.
Summary of the invention
The object of invention is for the problems referred to above, provide a kind of raising precision, without the need to repeatedly tool setting, complete with it screw thread cut after, proceed to the machining that burr place, double thread top makes trace immediately, the screw thread burr at this place can precisely and fast be excised, not only can be used for cutting screw thread, but also can be used for excising the burr blade at fillet surface place, screw thread top.
For achieving the above object, invention have employed following technical proposal: a kind of Cutting blade for machining screw thread, comprise blade body, it is characterized in that, the cutting edge side of described blade body is provided with chasing cutter, also it was provided with before this chasing cutter and cuts deburring cutter, it cuts the compressed side burr blade that deburring cutter comprises the chasing profile of tooth being arranged on front end and bears the burr of compressive load side, and can be used for the tensile side burr blade that chasing profile of tooth bears the burr of tension load side after being connected to this compressed side burr blade.
In above-mentioned a kind of Cutting blade for machining screw thread, described screw thread top fillet surface and the angle of screw thread axis are ��, the angle formed between both the profile of tooth side bearing compressive load side of thread tooth and screw thread axis perpendicular plane is the angle formed between both �� 1, the profile of tooth side bearing tension load side of thread tooth and screw thread axis perpendicular plane is �� 2, and the angle formed between the vertical plane of compressed side burr blade and tensile side burr blade and screw thread axis is respectively �� 1, �� 2; The described pass between angle is: �� 1 < �� 1 < (90 �� of-��), �� 2 < �� 2 < 90 ��.
In above-mentioned a kind of Cutting blade for machining screw thread, the radial height point of tensile side burr blade forms angle theta with both point of a knife summits of adjacent chasing blade between line and sea line, and �� >=��.
In above-mentioned a kind of Cutting blade for machining screw thread, described compressed side burr blade and the radial height k >=0.1mm of tensile side burr blade.
In above-mentioned a kind of Cutting blade for machining screw thread, when it is for cutting the screw thread burr of V shape class profile of tooth screw thread and top fillet surface thereof, cut deburring cutter and walked the angle �� between both track and screw thread axis, and (��+15 ��) < �ء�(��-3 ��), �� is that screw thread rises angle.
In above-mentioned a kind of Cutting blade for machining screw thread, when it is for cutting the screw thread burr of T-shaped class profile of tooth screw thread and top fillet surface thereof, the screw thread of described circular cone screw thread rises angle ��, its compressed side burr blade is walked the angle �� 2 between both track and screw thread axis, tensile side burr blade is walked the angle �� 1 between both track and screw thread axis, and (��+10 ��) < �� 2��(��-2 ��), �� < �� 1��(��-2 ��).
Another object of the present invention is for the problems referred to above, it provides a kind of working method adopting this cutter.
A, to adopt rough turn cutter to complete screw thread place cylindrical rough turn, the exterior angle at the top of falling screw thread, and the angle making fillet surface and screw thread axis outside screw thread top is ��;
B, use the Cutting blade for machining screw thread described in any one described in claim 1 to 6 instead, threading; Angle ��, thread tooth compressed side profile of tooth half angle �� 1, thread tooth tensile side profile of tooth half angle �� 2 is risen, it is determined that angle �� 1, �� 2 between the vertical plane of corresponding tensile side burr blade and compressed side burr blade and screw thread axis and angle theta according to screw thread top fillet surface and the angle �� of its axis, the screw thread of circular cone screw thread;
C, without the need to changing cutter spacing, with cutting the burr place of burr blade alignment thread tooth tensile side and compressed side, excise the burr of screw thread along oblique angle �� or �� 1 and �� 2 before being arranged at the car silk blade of same blade.
Compared with prior art, the advantage of invention is: can remove burr lack of standardization by the mode of reface by this combination cutter, by burring knife and screw thread cutter are integrally combined, it is completely fixed the position relation of burring knife and screw thread cutter, the accurate location of deburring track is realized by modification and processing program parameter, eliminate burring knife and the Form and position error of upper lower blade existence completely, eliminate the tool setting process of burring knife simultaneously, simplify operation steps; Cut burr blade by rationally arranging compressed side, and be connected to compressed side cut burr blade after tensile side cut burr blade, the respectively corresponding burr removing " turning up " and " varus "; Meanwhile, can realizing the rational one-piece construction of cutter by the relation of each angle, there are the problems such as the mutual interference that occurs in tool sharpening process in prevention.
Accompanying drawing explanation
In order to be illustrated more clearly in inventive embodiments or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1-1 is first machining screw top fillet surface, cut screw thread again after, " turning up " burr-shaped looks sketch that fillet surface place crossing with screw thread in screw thread top presents, it is V-type tooth configuration. Fig. 1-2 is the tooth profile angle shape looks sketch of T-shaped tooth.
Fig. 2 for doing feed cutting, to excise the working method schematic diagram of its " turning up " burr to the fillet surface of Fig. 1.
Fig. 3 is for doing by cutter cutting, to excise the working method schematic diagram of its " turning up " burr the fillet surface of Fig. 1.
Fig. 4 is after being processed by fillet surface by Fig. 2 and Fig. 3, " varus " burr-shaped looks sketch that fillet surface place crossing with screw thread in screw thread top presents.
Fig. 5-1 is the shape looks sketch of the screw thread blade for processing V shape class profile of tooth screw thread (containing V shape profile of tooth and the zig-zag profile of tooth of the point end and round bottom); Fig. 5-2 is the shape looks sketch of the screw thread blade for processing T-shaped class profile of tooth screw thread (containing T-shaped profile of tooth, partially trapezoidal toothed and and flat zig-zag profile of tooth).
Fig. 6-1 is the workpiece for V shape class profile of tooth screw thread (containing V shape profile of tooth and the zig-zag profile of tooth of the point end and round bottom), the schematic diagram of its chasing processing; Schematic diagram that Fig. 6-2 is after chasing, it cuts burr processing.
Fig. 7-1 is the workpiece for T-shaped class profile of tooth screw thread (containing T-shaped profile of tooth, partially trapezoidal toothed and flat zig-zag profile of tooth), the schematic diagram of its chasing processing; Schematic diagram that Fig. 7-2 is after chasing, it cuts the processing of tensile side burr; Schematic diagram that Fig. 7-3 is after chasing, it cuts the processing of compressed side burr.
Fig. 8-1 is the fillet surface place, pipe body screw thread top of API round thread, the shape looks sketch after excision burr; Fig. 8-2 is the fillet surface place, pipe body screw thread top of API buttress thread, the shape looks sketch after excision burr.
Fig. 9-1 and 9-2 is the schematic diagram that in prior art, chasing cutter and burring knife are provided separately cutting.
Embodiment
Below in conjunction with the accompanying drawing in inventive embodiments, the technical scheme in inventive embodiments is clearly and completely described, it is clear that described embodiment is only invention part embodiment, instead of whole embodiments. Based on the embodiment in invention, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of invention protection.
Embodiment one (the wrong angle of institute all needs adjustment)
As shown in Fig. 5-1, Fig. 5-2, Fig. 6-1, Fig. 6-2, a kind of Cutting blade for machining screw thread, comprise blade body 1, the cutting edge side of described blade body is provided with chasing cutter 2, also it was provided with before this chasing cutter and cuts deburring cutter 5, it cuts the compressed side burr blade 3 that deburring cutter comprises the chasing profile of tooth being arranged on front end and bears the burr of compressive load side, and can be used for the tensile side burr blade 4 that chasing profile of tooth bears the burr of tension load side after being connected to this compressed side burr blade.
Described screw thread top fillet surface and the angle of screw thread axis are ��, the angle formed between both the profile of tooth side bearing compressive load side of thread tooth and screw thread axis perpendicular plane is the angle formed between both �� 1, the profile of tooth side bearing tension load side of thread tooth and screw thread axis perpendicular plane is �� 2, and the angle formed between the vertical plane of compressed side burr blade and tensile side burr blade and screw thread axis is respectively �� 1, �� 2; The described pass between angle is: �� 1 < �� 1 < (90 �� of-��), �� 2 < �� 2 < 90 ��.
The radial height point of tensile side burr blade forms angle theta with both point of a knife summits of adjacent chasing blade between line and sea line, and �� >=��; Described compressed side burr blade and the radial height k >=0.1mm of tensile side burr blade.
When it is for cutting the screw thread burr of V shape class profile of tooth screw thread and top fillet surface thereof, the screw thread of described circular cone screw thread rises angle ��, cut deburring cutter is walked the angle �� between both track and screw thread axis, and (��+15 ��) < �ء�(��-3 ��); When it is for cutting the screw thread burr of T-shaped class profile of tooth screw thread and top fillet surface thereof, the screw thread of described circular cone screw thread rises angle ��, its compressed side burr blade is walked the angle �� 1 between both track and screw thread axis, tensile side burr blade is walked the angle �� 2 between both track and screw thread axis, and (��+10 ��) < �� 1��(��-2 ��), �� < �� 2��(��-2 ��).
Adopt the working method of this cutter:
A, to adopt rough turn cutter to complete screw thread place cylindrical rough turn, the exterior angle at the top of falling screw thread, and outside this screw thread top, the angle of fillet surface and screw thread axis is ��;
B, the screw thread cutter using this patent instead, reface screw thread;
C, without the need to changing cutter spacing, with the burr place cutting burr blade alignment thread tooth compressed side and tensile side before being arranged at the chasing blade of same blade, along oblique angle �� (V shape class profile of tooth screw thread) or �� 1 and �� 2(T shape class profile of tooth screw thread) excise the burr of screw thread.
The pipe body screw thread (belonging to V shape class profile of tooth screw thread) of API round thread tubing and casing, use the direct built-up type chasing tool (as Fig. 5-1 shows) of the present invention do screw thread cut (as Fig. 6-1 shows) afterwards, the existence of its screw thread and fillet surface intersection, top turns up burr (as Fig. 1 shows), and then do not need to change cutter spacing, make screw thread burr cut (as Fig. 6-2 shows) with the burr place that deburring cutter is directed at thread tooth tensile side and compressed side of cutting before being arranged at the chasing blade of same blade simultaneously, its cut burr after cutting position shape looks such as Fig. 8-1 show.
As, the angle �� of screw thread top fillet surface and its axis is 30 ��, cuts the drift angle �� of compressed side burr blade1It is 52 ��, cuts the drift angle �� of tensile side burr blade2Being 78 ��, the oblique angle �� cutting burr track is 24 �� 7 ' 5 ".
Embodiment two
A kind of Cutting blade for machining screw thread, comprise blade body 1, the cutting edge side of described blade body is provided with chasing cutter 2, also it was provided with before this chasing cutter and cuts deburring cutter 5, it cuts the compressed side burr blade 3 that deburring cutter comprises the chasing profile of tooth being arranged on front end and bears the burr of compressive load side, and can be used for the tensile side burr blade 4 that chasing profile of tooth bears the burr of tension load side after being connected to this compressed side burr blade.
Described screw thread top fillet surface and the angle of screw thread axis are ��, the angle formed between both the profile of tooth side bearing compressive load side of thread tooth and screw thread axis perpendicular plane is the angle formed between both �� 1, the profile of tooth side bearing tension load side of thread tooth and screw thread axis perpendicular plane is �� 2, and the angle formed between the vertical plane of compressed side burr blade and tensile side burr blade and screw thread axis is respectively �� 1, �� 2; The described pass between angle is: �� 1 < �� 1 < (90 �� of-��), �� 2 < �� 2 < 90 ��.
The radial height point of tensile side burr blade forms angle theta with both point of a knife summits of adjacent chasing blade between line and sea line, and �� >=��; Described compressed side burr blade and the radial height k >=0.1mm of tensile side burr blade.
When it is for cutting the screw thread burr of V shape class profile of tooth screw thread and top fillet surface thereof, the screw thread of described circular cone screw thread rises angle ��, cut deburring cutter is walked the angle �� between both track and screw thread axis, and (��+15 ��) < �ء�(��-3 ��); When it is for cutting the screw thread burr of T-shaped class profile of tooth screw thread and top fillet surface thereof, the screw thread of described circular cone screw thread rises angle ��, its compressed side burr blade is walked the angle �� 1 between both track and screw thread axis, tensile side burr blade is walked the angle �� 2 between both track and screw thread axis, and (��+10 ��) < �� 1��(��-2 ��), �� < �� 2��(��-2 ��).
Adopt the working method of this cutter:
A, to adopt rough turn cutter to complete screw thread place cylindrical rough turn, the exterior angle at the top of falling screw thread, and outside this screw thread top, the angle of fillet surface and screw thread axis is ��;
B, the screw thread cutter using this patent instead, first rise angle ��, thread tooth compressed side profile of tooth half-angle �� 1, thread tooth tensile side profile of tooth half-angle �� 2 angularly according to screw thread top fillet surface and the angle �� of its axis, the screw thread of circular cone screw thread, determine angle �� 1, the �� 2 between the vertical plane of corresponding compressed side burr blade and tensile side burr blade and screw thread axis and the radial height point of tensile side burr blade and both point of a knife summits of the most adjacent chasing blade angle theta between line and sea line, reface screw thread;
C, without the need to changing cutter spacing, with the burr place cutting burr blade alignment thread tooth compressed side and tensile side before being arranged at the chasing blade of same blade, along oblique angle �� (V shape class profile of tooth screw thread) or �� 1 and �� 2(T shape class profile of tooth screw thread) excise the burr of screw thread. (being that embodiment one copies a part again taking upper part)
As shown in Fig. 7-1, Fig. 7-2, Fig. 7-3, the pipe body screw thread of API BCSG, use the direct built-up type chasing tool of the present invention do screw thread cut after, the existence of its screw thread and fillet surface intersection, top turns up burr, and then do not need to change cutter spacing, make screw thread burr cut with the burr place that burr blade is directed at thread tooth tensile side and compressed side respectively of cutting before being arranged at the car silk blade of same blade, its cut burr after cutting position shape looks such as Fig. 8-2 show.
Now, the angle �� of screw thread top fillet surface and its axis is 30 ��, cuts the drift angle �� of compressed side burr blade1It is 37 �� 30 ', its oblique angle �� cutting burr track1It is 26 �� 32 ' 36 ", cut the drift angle �� of tensile side burr blade2It is 59 ��, its oblique angle �� cutting burr track2It it is 27 �� 34 ' 22 ". (data verification)
The foregoing is only the better embodiment of invention, not in order to restriction invention, within all spirit in invention and principle, any amendment of doing, equivalent replacement, improvement etc., all should be included within the protection domain of invention.
Claims (8)
1. a Cutting blade for machining screw thread, comprise blade body, it is characterized in that, the cutting edge side of described blade body is provided with chasing cutter, also it was provided with before this chasing cutter and cuts deburring cutter, it cuts the compressed side burr blade that deburring cutter comprises the chasing profile of tooth being arranged on front end and bears the burr of compressive load side, and can be used for the tensile side burr blade that chasing profile of tooth bears the burr of tension load side after being connected to this compressed side burr blade.
2. Cutting blade for machining screw thread according to claim 1, it is characterized in that, described screw thread top fillet surface and the angle of screw thread axis are ��, the angle formed between both the profile of tooth side bearing compressive load side of thread tooth and screw thread axis perpendicular plane is the angle formed between both �� 1, the profile of tooth side bearing tension load side of thread tooth and screw thread axis perpendicular plane is �� 2, and the angle formed between the vertical plane of compressed side burr blade and tensile side burr blade and screw thread axis is respectively �� 2, �� 1; The described pass between angle is: �� 1 < �� 1 < (90 �� of-��), �� 2 < �� 2 < 90 ��.
3. Cutting blade for machining screw thread according to claim 1 and 2, it is characterised in that, described compressed side burr blade and the depth of cut of tensile side burr blade are k, and k >=0.1mm.
4. Cutting blade for machining screw thread according to claim 1, it is characterized in that, described compressed side burr blade and the interface point of tensile side burr blade, angle theta is formed between the line being linked to be with both point of a knife summits of the intersection point that vertical line is formed with adjacent chasing blade to the sea line of depth of cut and sea line, and �� >=��.
5. Cutting blade for machining screw thread according to claim 1, it is characterized in that, when it is for cutting the screw thread burr of V shape class profile of tooth screw thread and top fillet surface thereof, cut deburring cutter and walked the angle �� between both track and screw thread axis, and (��+15 ��) < �ء�(��-3 ��); �� is that screw thread rises angle.
6. Cutting blade for machining screw thread according to claim 1, it is characterized in that, when it is for cutting the screw thread burr of T-shaped class profile of tooth screw thread and top fillet surface thereof, described screw thread rises angle ��, its compressed side burr blade is walked the angle �� 1 between both track and screw thread axis, tensile side burr blade is walked the angle �� 2 between both track and screw thread axis, and (��+10 ��) < �� 1��(��-2 ��), �� < �� 2��(��-2 ��).
7. by the Cutting blade for machining screw thread manufacturing procedure described in any one described in claim 1 to 6, it is characterised in that, comprise the following steps:
A, to adopt rough turn cutter to complete screw thread place cylindrical rough turn, the exterior angle at the top of falling screw thread, and the angle making fillet surface and screw thread axis outside screw thread top is ��;
B, use the Cutting blade for machining screw thread described in any one described in claim 1 to 6 instead, threading;
C, without the need to changing cutter spacing, with cutting the burr place of burr blade alignment thread tooth compressed side and tensile side, excise the burr of screw thread along oblique angle �� or �� 1 and �� 2 before being arranged at the car silk blade of same blade.
8. manufacturing procedure according to claim 7, it is characterized in that, in described step b, angle ��, thread tooth compressed side profile of tooth half angle �� 1, thread tooth tensile side profile of tooth half angle �� 2 is risen, it is determined that angle �� 1, �� 2 between the vertical plane of corresponding tensile side burr blade and compressed side burr blade and screw thread axis and angle theta according to screw thread top fillet surface and the angle �� of its axis, the screw thread of circular cone screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510678612.0A CN105643025B (en) | 2015-10-20 | 2015-10-20 | Cutting blade for machining screw thread and its processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510678612.0A CN105643025B (en) | 2015-10-20 | 2015-10-20 | Cutting blade for machining screw thread and its processing method |
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| Publication Number | Publication Date |
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| CN105643025A true CN105643025A (en) | 2016-06-08 |
| CN105643025B CN105643025B (en) | 2018-11-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110711909A (en) * | 2019-10-09 | 2020-01-21 | 北部湾大学 | Method for removing burrs or burrs at starting section of workpiece thread by numerical control lathe |
| CN111531234A (en) * | 2020-05-11 | 2020-08-14 | 成都航利航空科技有限责任公司 | Method for removing burrs of head and tail threads by numerical control lathe |
| CN113084271A (en) * | 2021-04-09 | 2021-07-09 | 贵州黎阳国际制造有限公司 | Sawtooth thread machining method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110711909A (en) * | 2019-10-09 | 2020-01-21 | 北部湾大学 | Method for removing burrs or burrs at starting section of workpiece thread by numerical control lathe |
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| CN113084271A (en) * | 2021-04-09 | 2021-07-09 | 贵州黎阳国际制造有限公司 | Sawtooth thread machining method |
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| Publication number | Publication date |
|---|---|
| CN105643025B (en) | 2018-11-13 |
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Address after: 325000 No. 100, Yucang East Road, Puzhou street, Longwan District, Wenzhou City, Zhejiang Province Patentee after: Wenzhou Tianyi precision tools Co.,Ltd. Address before: No. 100, East Yucang Road, Longwan Economic Development Zone, Wenzhou, Zhejiang 325011 Patentee before: WENZHOU TIANYI STEEL PLASTIC MACHINERY PLANT |
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