CN103639543A - Thread machining blade - Google Patents
Thread machining blade Download PDFInfo
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- CN103639543A CN103639543A CN201310564736.7A CN201310564736A CN103639543A CN 103639543 A CN103639543 A CN 103639543A CN 201310564736 A CN201310564736 A CN 201310564736A CN 103639543 A CN103639543 A CN 103639543A
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- blade
- chip breaking
- cutting
- rake face
- screw thread
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Abstract
The invention discloses a thread machining blade which comprises a blade body. The blade body is provided with a blade center hole and cutting edge parts. Each cutting edge part is defined by a front blade surface, a cutting edge angle arc surface and two cutting edge angle side surfaces in an enclosed mode, wherein the two cutting edge angle side surfaces intersect with the front blade surface to form two side cutting edges, the included angle between the two side cutting edges is a cutting edge angle, the front blade surface is connected with the upper surface of the blade body through a connecting curved surface, the front blade surface is provided with a chip guiding groove which is arranged in a symmetric mode relative to the angular bisector N of the cutting edge angle, a spherical chip breaking boss higher than the front blade surface is formed in an outward protruding mode from the inside of the chip guiding groove, a triangular chip breaking boss is formed by extending from the connecting curved surface towards the inside of the chip guiding groove, and the triangular chip breaking boss is connected with the chip guiding groove in a circular arc transition mode. The thread machining blade has the advantages that machining is easy and fast, chips are low in friction in the flowing process, the degree of finish of a workpiece thread is high, the blade is high in strength, machining efficiency can be effectively improved, and production cost is lowered.
Description
Technical field
The present invention relates to Cutting blade for machining screw thread, relate in particular to indexable Cutting blade for machining screw thread.
Background technology
Thread turning processing is more special, in screw thread process, threaded blade each cutting the basil two sides cutting edge participate in simultaneously cutting and the amount of feeding large, smear metal is along with the increase of cutting-in becomes more and more wider, wide and hard smear metal is difficult to fracture, be easy to be wrapped on workpiece, cutter and fixture, the point of a knife angle of Cutting blade for machining screw thread is little, intensity is low, smear metal with workpiece High Rotation Speed is easily beaten and on blade, is caused tipping, smear metal is wound around workpiece also can cause that workpiece screw thread fineness declines, and smear metal winding also easily causes danger to operator.Simultaneously, threaded blade is when the plasticity such as processing stainless steel, alloy material, non-ferrous metal and cohesive material, blade rake face blade tip position is because the reasons such as cutting speed discomfort easily produce built-up edge and the hollow phenomenon of crescent moon, cause that blade strength reduces, the phenomenons such as insert shape change in size, cause blade life to reduce rapidly, reduce production efficiency, increase production cost.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of process brisk, smear metal frictional force in flow process is little, workpiece screw thread is highly polished, blade strength good, the Cutting blade for machining screw thread that can effectively improve working (machining) efficiency and reduce production costs.
A kind of Cutting blade for machining screw thread, comprise blade body, described blade body is provided with blade center hole and cutting blade, described cutting blade is by rake face, basil arc surface and two basil sides surround, described two basil sides and rake face intersect two side cutting edges of formation, angle between described two side cutting edges is the cutting basil, described rake face connects curved surface by one and is connected with the upper surface of blade body, described rake face is provided with along the symmetrical dust lead groove of angular bisector N of the cutting basil, in described dust lead groove, outwardly convex forms the spherical chip breaking boss higher than rake face, from described connection curved surface, in dust lead groove, extend to form triangle chip breaking boss, described triangle chip breaking boss is connected through arc transition with dust lead groove.
Further improvement as technique scheme:
Described triangle chip breaking boss is symmetrical about symmetrical center line M.
The distance of the symmetrical center line M of described triangle chip breaking boss and the angular bisector N of the described cutting basil is L1,0.1mm≤L1≤0.8mm.
The bus of symmetrical center line M position of described triangle chip breaking boss and the upper surface of blade body are θ angle and extend, 25 °≤θ≤60 °.
The symmetrical center line of described spherical chip breaking boss is positioned on angular bisector, and the summit of described spherical chip breaking boss and the distance of rake face are L2,0.03mm≤L2≤0.1mm.
Described triangle chip breaking boss is higher than described spherical chip breaking boss, and its difference in height is L3,0.02mm≤L3≤0.1mm.
Described side cutting edge slopes inwardly downwards along rake face, and is the extension of β angle, 0 °≤β≤10 ° with rake face.
Described dust lead groove comprises two sidewalls, and the bus of described sidewall and rake face are γ angle and extend, 20 °≤γ≤70 °.
Described dust lead groove and the rake face intersection forming that joins is the extension of δ angle, 0 °≤δ≤5 ° with side cutting edge.
Cutting blade for machining screw thread of the present invention, has unique cutting edge structure, can when improving threaded blade cutting edge sharpness, guarantee that again blade cutting edge has higher intensity; In screw thread process, the interior unique spherical chip breaking boss of blade rake face is conducive to smear metal and lifts, avoided position, blade tip that sticky cutter and the phenomenon of bursting apart occur, spherical chip breaking boss has smooth boss end face, can reduce contact area and the frictional force of blade rake face and smear metal, can avoid heat to concentrate at blade tip place; The symmetrical dust lead groove of angular bisector along the cutting basil, has increased the area of dissipation of cutter and smear metal, is conducive to the heat radiation of blade and smear metal, avoids the heat in metal cutting on cutter to assemble and the hollow phenomenon of generation built-up edge or crescent moon in a large number; From connecting curved surface to the triangle chip breaking boss structure extending to form in dust lead groove, impel from blade blade tip and flank and be lifted and curling smear metal, produce secondary coil, reduced the radius of curvature of smear metal, be beneficial to fractureing or getting rid of disconnected of smear metal, this structure setting simultaneously makes triangle chip breaking boss be positioned at the cutting basil and cuts out side, can stop chip-flowing machined surface, and guide smear metal to flow to the eliminating of cutter sidepiece along connecting curved surface, thereby avoid smear metal to be wound around workpiece and scraping machined surface, effectively improve the surface quality of workpiece screw thread.For conventional thread turning blade, Cutting blade for machining screw thread of the present invention has advantages of that processing is brisk, smear metal frictional force in flow process is little, workpiece screw thread is highly polished, blade strength good, can effectively improve working (machining) efficiency and reduce production costs.
Accompanying drawing explanation
Fig. 1 is screwer stereogram of the present invention.
Fig. 2 is the partial enlarged drawing that cuts the basil in Fig. 1.
Fig. 3 is screwer side view of the present invention.
Fig. 4 is A-A cutaway view of Fig. 2.
Fig. 5 is B-B cutaway view in Fig. 2.
In figure, each label represents:
1, blade body; 11, upper surface; 12, lower surface; 13, side; 2, blade center hole; 3, cutting blade; 31, rake face; 32, basil arc surface; 33, basil side; 34, side cutting edge; 35, the cutting basil; 36, dust lead groove; 361, sidewall; 37, spherical chip breaking boss; 38, triangle chip breaking boss; 4, connect curved surface; M, symmetrical center line; N, angular bisector.
The specific embodiment
Fig. 1 to Fig. 5 shows a kind of Cutting blade for machining screw thread embodiment of the present invention, this Cutting blade for machining screw thread comprises blade body 1, blade body 1 is by upper surface 11, lower surface 12 and side 13 surround, blade body 1 is provided with blade center hole 2 and cutting blade 3, cutting blade 3 is by rake face 31, basil arc surface 32 and two basil sides 33 surround, two basil sides 33 are intersected and are formed two side cutting edges 34 with rake face 31, article two, the angle between side cutting edge 34 is the cutting basil 35, rake face 31 connects curved surface 4 by one and is connected with the upper surface 11 of blade body 1, rake face 31 is provided with along the symmetrical dust lead groove 36 of angular bisector N of the cutting basil 35, from the interior outwardly convex of dust lead groove 36, form the spherical chip breaking boss 37 higher than rake face 31, from connecting curved surface 4, in dust lead groove 36, extend to form triangle chip breaking boss 38, triangle chip breaking boss 38 is connected through arc transition with dust lead groove 36.This Cutting blade for machining screw thread, has unique cutting edge structure, can when improving threaded blade cutting edge sharpness, guarantee that again blade cutting edge has higher intensity; In screw thread process, the spherical chip breaking boss 37 of blade rake face 31 interior uniquenesses is conducive to smear metal and lifts, avoided position, blade tip that sticky cutter and the phenomenon of bursting apart occur, spherical chip breaking boss 37 has smooth boss end face, can reduce contact area and the frictional force of blade rake face 31 and smear metal, can avoid heat to concentrate at blade tip place; The symmetrical dust lead groove 36 of angular bisector along the cutting basil 35, has increased the area of dissipation of cutter and smear metal, is conducive to the heat radiation of blade and smear metal, avoids the heat in metal cutting on cutter to assemble and the hollow phenomenon of generation built-up edge or crescent moon in a large number; From connecting curved surface 4 to triangle chip breaking boss 38 structures that extend to form in dust lead groove 36, impel from blade blade tip and flank and be lifted and curling smear metal, produce secondary coil, reduced the radius of curvature of smear metal, be beneficial to fractureing or getting rid of disconnected of smear metal, this structure setting simultaneously makes triangle chip breaking boss 38 be positioned at the cutting basil 35 and cuts out side, can stop chip-flowing machined surface, and guide smear metal to flow to the eliminating of cutter side along connecting curved surface 4, thereby avoid smear metal to be wound around workpiece and scraping machined surface, effectively improve the surface quality of workpiece screw thread.
In the present embodiment, the symmetrical center line of spherical chip breaking boss 37 is positioned on angular bisector N, the distance of its summit and rake face 31 is L2,0.03mm≤L2≤0.1mm, the smear metal that 35 cuttings of the cutting basil produce is flowed along rake face 31, when touching spherical chip breaking boss 37, be lifted, reduced frictional force and the contact area of rake face 31 with smear metal; Avoided position, blade tip that sticky cutter and the phenomenon of bursting apart occur, the curling and flow direction cutting basil 35 bottoms have occurred when spherical chip breaking boss 37 end face is flow through in smear metal.Triangle chip breaking boss 38 is higher than spherical chip breaking boss 37, its difference in height is L3,0.02mm≤L3≤0.1mm, through spherical chip breaking boss 37, lift and curling smear metal, along rake face 31, flow to the cutting basil 35 bottoms, by triangle chip breaking boss 38, again lifted, secondary coil occurs, reduced the radius of curvature of smear metal, be beneficial to fractureing or getting rid of disconnected of smear metal in the High Rotation Speed of machine tool chief axis.The bus of the symmetrical center line M position of triangle chip breaking boss 38 and the upper surface 11 of blade body 1 are θ angle and extend, 25 °≤θ≤60 °, triangle chip breaking boss 38 is symmetrical about symmetrical center line M, the symmetrical center line M of triangle chip breaking boss 38 is L1 with the distance of the angular bisector N of the cutting basil 35, 0.1mm≤L1≤0.8mm, after the smear metal generation secondary coil of the cutting basil 35 of flowing through, through stopping of triangle chip breaking boss 38, can flow along connecting curved surface 4, and get rid of in cutter side, avoided smear metal to be wound around workpiece and scraping machined surface, guarantee the higher surface quality that has of workpiece screw thread.Side cutting edge 34 slopes inwardly downwards along rake face 31, and being β angle with rake face 31 extends, 0 °≤β≤10 °, when side cutting edge 34 incision workpiece, the sharp good incision workpiece of cutting edge energy, avoid blade and workpiece to produce larger impact and friction, the β angle in this angular range has also guaranteed the cutting edge strength of blade simultaneously, avoids occurring in blade process damaged.Dust lead groove 36 comprises two sidewalls 361, the bus of sidewall 361 and rake face 31 are γ angle and extend, 20 °≤γ≤70 °, dust lead groove 36 and rake face 31 intersection forming that joins is the extension of δ angle with side cutting edge 34, 0 °≤δ≤5 °, in the parameter area of γ and δ, blade tip has the tread of relative narrower, can guarantee the sharpness of blade, the contact area that makes it cut fast workpiece and can reduce smear metal and blade, basil bottom has relatively wide tread, it can guarantee that cutting edge possesses good intensity, meet the demand that basil bottom participates in the processing of thread tooth and the turning of excircle of workpiece simultaneously.In the present embodiment, β=5 °; γ=35 °; δ=3 °; θ=30 °; L1=0.3mm; L2=0.06mm; L3=0.03mm.
Although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention.Any those of ordinary skill in the art, in the situation that not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible changes and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solution of the present invention,, all should drop in the scope of technical solution of the present invention protection any simple modification made for any of the above embodiments, equivalent variations and modification according to the technology of the present invention essence.
Claims (9)
1. a Cutting blade for machining screw thread, comprise blade body (1), described blade body (1) is provided with blade center hole (2) and cutting blade (3), described cutting blade (3) is by rake face (31), basil arc surface (32) and two basil sides (33) surround, described two basil sides (33) are intersected and are formed two side cutting edges (34) with rake face (31), angle between described two side cutting edges (34) is the cutting basil (35), it is characterized in that: described rake face (31) connects curved surface (4) by one and is connected with the upper surface (11) of blade body (1), described rake face (31) is provided with along the symmetrical dust lead groove (36) of angular bisector (N) of the cutting basil (35), in described dust lead groove (36), outwardly convex forms the spherical chip breaking boss (37) higher than rake face (31), from described connection curved surface (4), in dust lead groove (36), extend to form triangle chip breaking boss (38), described triangle chip breaking boss (38) is connected through arc transition with dust lead groove (36).
2. Cutting blade for machining screw thread according to claim 1, is characterized in that: described triangle chip breaking boss (38) is symmetrical about symmetrical center line (M).
3. Cutting blade for machining screw thread according to claim 2, is characterized in that: the symmetrical center line (M) of described triangle chip breaking boss (38) is L1 with the distance of the angular bisector (N) of the described cutting basil (35), 0.1mm≤L1≤0.8mm.
4. Cutting blade for machining screw thread according to claim 2, is characterized in that: the bus of symmetrical center line (M) position of described triangle chip breaking boss (38) and the upper surface (11) of blade body (1) are θ angle and extend, 25 °≤θ≤60 °.
5. according to the Cutting blade for machining screw thread described in any one in claim 1 to 4, it is characterized in that: the symmetrical center line of described spherical chip breaking boss (37) is positioned on angular bisector (N), the distance of the summit of described spherical chip breaking boss (37) and rake face (31) is L2,0.03mm≤L2≤0.1mm.
6. according to the Cutting blade for machining screw thread described in any one in claim 1 to 4, it is characterized in that: described triangle chip breaking boss (38) is higher than described spherical chip breaking boss (37), and its difference in height is L3,0.02mm≤L3≤0.1mm.
7. according to the Cutting blade for machining screw thread described in any one in claim 1 to 4, it is characterized in that: described side cutting edge (34) slopes inwardly downwards along rake face (31), and be the extension of β angle, 0 °≤β≤10 ° with rake face (31).
8. according to the Cutting blade for machining screw thread described in any one in claim 1 to 4, it is characterized in that: described dust lead groove (36) comprises two sidewalls (361), the bus of described sidewall (361) and rake face (31) are γ angle and extend, 20 °≤γ≤70 °.
9. according to the Cutting blade for machining screw thread described in any one in claim 1 to 4, it is characterized in that: described dust lead groove (36) and rake face (31) intersection forming that joins is the extension of δ angle, 0 °≤δ≤5 ° with side cutting edge (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310564736.7A CN103639543B (en) | 2013-11-14 | 2013-11-14 | A kind of Cutting blade for machining screw thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310564736.7A CN103639543B (en) | 2013-11-14 | 2013-11-14 | A kind of Cutting blade for machining screw thread |
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| Publication Number | Publication Date |
|---|---|
| CN103639543A true CN103639543A (en) | 2014-03-19 |
| CN103639543B CN103639543B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310564736.7A Active CN103639543B (en) | 2013-11-14 | 2013-11-14 | A kind of Cutting blade for machining screw thread |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290546A (en) * | 2015-10-16 | 2016-02-03 | 厦门金鹭特种合金有限公司 | Indexable thread machining blade |
| DE102015109055A1 (en) * | 2015-06-09 | 2016-12-15 | Schwarz Cuttingtools GmbH | Tapping plate |
| CN113118485A (en) * | 2019-12-30 | 2021-07-16 | 厦门金鹭特种合金有限公司 | Take superhard thread machining blade of water droplet form chip-breaking boss |
| CN113770460A (en) * | 2021-09-30 | 2021-12-10 | 成都工具研究所有限公司 | Precision press-formed indexable threading tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5765972A (en) * | 1993-09-10 | 1998-06-16 | Sandvik Ab | Thread cutting insert |
| CN1557594A (en) * | 2004-01-30 | 2004-12-29 | 株洲硬质合金集团有限公司 | Cutting blade for machining screw thread |
| US20060088391A1 (en) * | 2004-10-27 | 2006-04-27 | Mitsubishi Materials Corporation | Thread cutting insert |
| CN201455319U (en) * | 2009-04-02 | 2010-05-12 | 浙江东钨实业有限公司 | NC cutting blade |
| CN101870017A (en) * | 2010-06-30 | 2010-10-27 | 株洲钻石切削刀具股份有限公司 | Indexable threading insert |
| CN202087853U (en) * | 2010-12-07 | 2011-12-28 | 中硬金属切削(大连)有限公司 | Double groove type indexable vertical numerical control turning blade for heavy cutting |
-
2013
- 2013-11-14 CN CN201310564736.7A patent/CN103639543B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5765972A (en) * | 1993-09-10 | 1998-06-16 | Sandvik Ab | Thread cutting insert |
| CN1557594A (en) * | 2004-01-30 | 2004-12-29 | 株洲硬质合金集团有限公司 | Cutting blade for machining screw thread |
| US20060088391A1 (en) * | 2004-10-27 | 2006-04-27 | Mitsubishi Materials Corporation | Thread cutting insert |
| CN201455319U (en) * | 2009-04-02 | 2010-05-12 | 浙江东钨实业有限公司 | NC cutting blade |
| CN101870017A (en) * | 2010-06-30 | 2010-10-27 | 株洲钻石切削刀具股份有限公司 | Indexable threading insert |
| CN202087853U (en) * | 2010-12-07 | 2011-12-28 | 中硬金属切削(大连)有限公司 | Double groove type indexable vertical numerical control turning blade for heavy cutting |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015109055A1 (en) * | 2015-06-09 | 2016-12-15 | Schwarz Cuttingtools GmbH | Tapping plate |
| CN105290546A (en) * | 2015-10-16 | 2016-02-03 | 厦门金鹭特种合金有限公司 | Indexable thread machining blade |
| CN113118485A (en) * | 2019-12-30 | 2021-07-16 | 厦门金鹭特种合金有限公司 | Take superhard thread machining blade of water droplet form chip-breaking boss |
| CN113770460A (en) * | 2021-09-30 | 2021-12-10 | 成都工具研究所有限公司 | Precision press-formed indexable threading tool |
| CN113770460B (en) * | 2021-09-30 | 2022-07-19 | 成都工具研究所有限公司 | Precision pressing forming indexable threading tool |
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| Publication number | Publication date |
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| CN103639543B (en) | 2016-01-20 |
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