CN204975474U - Screw thread processing knife blade - Google Patents
Screw thread processing knife blade Download PDFInfo
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- CN204975474U CN204975474U CN201520536794.3U CN201520536794U CN204975474U CN 204975474 U CN204975474 U CN 204975474U CN 201520536794 U CN201520536794 U CN 201520536794U CN 204975474 U CN204975474 U CN 204975474U
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- cutting
- screw thread
- basil
- rake face
- cutting edge
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Abstract
The utility model provides a screw thread processing knife blade belongs to processing cutter technical field. It has solved the current problem that screw thread processing knife blade life is short, the machining precision is low. It includes the blade body, be equipped with the cutting cutting part on the blade body, the cutting cutting part is by the rake face, basil arc surface and two basil sides enclose, two the side cutting edges in two basil sides and the crossing formation of rake face, article two, the contained angle between the side cutting edge is for cutting the basil, be equipped with recessed triangle -shaped recess downwards on the rake face, the triangle -shaped recess sets up along the bisector symmetry of the cutting basil, what the middle part of triangle -shaped recess was equipped with the class triangle -shaped that sets up along the bisector symmetry of the cutting basil lifts the bits boss, type triangle -shaped lifts inboard that the bits boss is located basil arc surface to have the circular arc that the slope set up and lifts the bits face, triangle -shaped recess and rake face are through being connected the cambered surface transitional coupling. The utility model has the advantages of processing is brisk, the smear metal is at the in -process small friction that flows, high, the long service life of machining precision.
Description
Technical field
The utility model belongs to machining cutting tool technical field, relates to a kind of Cutting blade for machining screw thread.
Background technology
Cutting blade for machining screw thread has one or more cutting basil, each cutting basil has two or more pieces cutting edge, in screw thread process process, the cutting edge cutting the basil participates in cutting simultaneously, the chip produced becomes more and more wider along with the increase of cutting-in, simultaneously because the cutting-in depth of cut of screw chasing is less, make the thinner thickness of chip, wide and thin chip is difficult to fracture, along with the rotation of workpiece, easily be wrapped on workpiece, cutter or fixture, cause the reduction of workpiece fineness or the reduction of cutter life.Simultaneously, the cutting edge of Cutting blade for machining screw thread is sharp, and point of a knife angle is little, intensity is low, easily causes tipping with after the chip impinges blade of workpiece High Rotation Speed, chip is wound around workpiece and workpiece screw thread fineness also can be caused to decline, and chip winding also easily causes danger to operator.Simultaneously, threaded blade is when cohesive materials such as processing stainless steel, alloy material, non-ferrous metals, blade rake face blade tip position easily produces built-up edge and the hollow phenomenon of crescent moon due to reasons such as cutting speed are uncomfortable, blade strength is caused to reduce, 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 purpose of this utility model there are the problems referred to above for existing technology, propose a kind of process brisk, chip-flowing is controlled, cut the little Cutting blade for machining screw thread of frictional force.
The purpose of this utility model realizes by following technical proposal:
This Cutting blade for machining screw thread, comprise the blade body with centre bore, described blade body is provided with cutting edge portion, described cutting edge portion is by rake face, basil arc surface and two basil sides surround, basil side described in two formation crossing with rake face two side cutting edges, article two, the angle between the side cutting edge described in is cut the basil, it is characterized in that, described rake face is provided with recessed triangular groove downwards, described triangular groove is symmetrical arranged along cutting edge bisector of angle, the middle part of described triangular groove is provided with lifts bits boss along the symmetrically arranged class of cutting edge bisector of angle is leg-of-mutton, described class is leg-of-mutton lifts inner side that bits boss is positioned at basil arc surface and has the circular arc be obliquely installed and lift bits face, described triangular groove connects by being connected cambered surface transition with rake face.
In above-mentioned Cutting blade for machining screw thread, the distance between described triangular groove to side cutting edge is 0.1mm-0.3mm.Distance between triangular groove to side cutting edge is the tread of this Cutting blade for machining screw thread, and tread is set to 0.1mm-0.3mm, can improve the sharpness of cutting edge, ensures that work pieces process is brisk.
In above-mentioned Cutting blade for machining screw thread, the distance between described triangular groove to side cutting edge is 0.2mm.
In above-mentioned Cutting blade for machining screw thread, described rake face bottom is also provided with the dregs guiding groove for guiding chip to flow out along green surface side, and described dregs guiding groove is connected with circular arc with described rake face.
In above-mentioned Cutting blade for machining screw thread, described dregs guiding groove and chip direction of feed are 30 ° of-50 ° of angles, described dregs guiding groove along described rake face downwards, extend internally.
In above-mentioned Cutting blade for machining screw thread, described dregs guiding groove and chip direction of feed are 40 ° of angles.
In above-mentioned Cutting blade for machining screw thread, the width of described dregs guiding groove broadens gradually along cutting direction of feed.
In above-mentioned Cutting blade for machining screw thread, the degree of depth of described dregs guiding groove deepens gradually along cutting direction of feed.
In above-mentioned Cutting blade for machining screw thread, along the direction of cutting feeding, be provided with the gear bits boss for guiding chip curling and flowing at the tail end of described dregs guiding groove.Gear bits boss can reduce the radius of curvature of chip, and be conducive to the rotation of cutting and curling, meanwhile, gear bits boss also bootable chip flows out along green surface side, prevents from impacting machined surface side.
In above-mentioned Cutting blade for machining screw thread, described cutting edge portion is 3, and described cutting edge portion is array distribution along described centre bore.
Compared with prior art, this Cutting blade for machining screw thread has the following advantages:
For normal thread turning insert, have that processing is brisk, chip frictional force in flow process is little, workpiece screw thread is highly polished, blade strength good, can effectively improve working (machining) efficiency and reduce the advantages such as production cost.Concrete manifestation is as follows: have unique cutting edge structure, can ensure that blade has higher intensity while raising blade cut sword sharpness, unique class triangle is lifted bits boss and is conducive to lifting with curling of chip, reduces the radius of curvature of chip, is beneficial to fractureing or getting rid of disconnected of chip; Meanwhile, avoid the impact of chip and blade and cause blade cutting edge to produce phenomenon of bursting apart; Class triangle is lifted on bits boss to be had circular arc and lifts bits face, after chip being lifted, can reduce contact area and the frictional force of rake face and chip, is conducive to generation and the accumulation of minimizing rake face place heat; Triangular groove increases the area of dissipation of cutter and chip, is conducive to the heat radiation of blade and chip, is conducive to entering of cooling fluid, avoids the heat of the chip on cutter a large amount of gathering and produces built-up edge or the hollow phenomenon of crescent moon; Gear bits boss can stop chip-flowing machined surface, the bootable chip-flowing green surface of dregs guiding groove, avoids chip to be wound around workpiece and scraping machined surface, effectively improves the surface quality of workpiece screw thread.
Accompanying drawing explanation
Fig. 1 is the front view of a kind of preferred embodiment that the utility model provides.
Fig. 2 is the left view of a kind of preferred embodiment that the utility model provides.
Fig. 3 is the enlarged diagram of the cutting edge portion that the utility model provides.
In figure, 1, blade body; 11, centre bore; 12, upper surface; 2, cutting edge portion; 21, rake face; 22, basil arc surface; 23, basil side; 24, side cutting edge; 25, triangular groove; 26, bits boss is lifted; 27, circular arc lifts bits face; 28, cambered surface is connected; 3, gear bits boss; 4, dregs guiding groove; 41, joint face.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Cutting blade for machining screw thread as shown in Figure 1, comprise the blade body 1 with centre bore 11 and upper surface 12, blade body 1 is provided with cutting edge portion 2, as shown in Figure 2, cutting edge portion 2 is surrounded by rake face 21, basil arc surface 22 and two basil sides 23, angle between two basil side 23 formation crossing with rake face 21, two side cutting edges, 24, two side cutting edges 24 is cut the basil.As shown in figures 1 and 3, rake face 21 is provided with recessed triangular groove 25 downwards, triangular groove 25 is symmetrical arranged along cutting edge bisector of angle, the middle part of triangular groove 25 is provided with lifts bits boss 26 along the symmetrically arranged class triangle of cutting edge bisector of angle, class triangle is lifted inner side that bits boss 26 is positioned at basil arc surface 22 and is had the circular arc be obliquely installed and lift bits face 27, and triangular groove 25 passes through to be connected cambered surface 28 transition with rake face 21 and connects.
According to actual conditions, the distance between triangular groove 25 to side cutting edge 24 is set to 0.1mm-0.3mm.Distance between triangular groove 25 to side cutting edge 24 is the tread of this Cutting blade for machining screw thread, and tread is set to 0.1mm-0.3mm, can improve the sharpness of cutting edge, ensures that work pieces process is brisk.
In the present embodiment, the distance between triangular groove 25 to side cutting edge 24 is 0.2mm.
As shown in Figure 1, rake face 21 bottom is also provided with the dregs guiding groove 4 for guiding chip to flow out along green surface side, and described dregs guiding groove 4 is connected with circular arc with described rake face 21.Dregs guiding groove in the present embodiment 4 and chip direction of feed be 30 ° of-50 ° of angles, and dregs guiding groove 4 is downward along rake face 21, extend internally.
As shown in Figure 1, dregs guiding groove 4 is connected by joint face 41 transition with upper surface 12, and the upper surface 12 of blade body 1 is higher than rake face 21.
Concrete, dregs guiding groove 4 and chip direction of feed are 40 ° of angles.
As shown in Figure 1, the width of dregs guiding groove 4 broadens gradually along cutting direction of feed, and the degree of depth of dregs guiding groove 4 deepens gradually along cutting direction of feed.
As shown in Figure 1, along the direction of cutting feeding, be provided with the gear bits boss 3 for guiding chip curling and flowing at the tail end of dregs guiding groove 4.Gear bits boss 3 can reduce the radius of curvature of chip, and be conducive to the rotation of cutting and curling, meanwhile, gear bits boss 3 also bootable chip flows out along green surface side, prevents from impacting machined surface side.
As shown in Figure 1, cutting edge portion 2 is 3, and centrally hole 11 is array distribution.
Therefore, for normal thread turning insert, this Cutting blade for machining screw thread has that processing is brisk, chip frictional force in flow process is little, workpiece screw thread is highly polished, blade strength good, can effectively improve working (machining) efficiency and reduce the advantages such as production cost.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (9)
1. a Cutting blade for machining screw thread, comprise the blade body (1) with centre bore (11), described blade body (1) is provided with cutting edge portion (2), described cutting edge portion (2) is by rake face (21), basil arc surface (22) and two basil sides (23) surround, basil side (23) described in two formation crossing with rake face (21) two side cutting edges (24), article two, the angle between the side cutting edge (24) described in is cut the basil, it is characterized in that, described rake face (21) is provided with recessed triangular groove (25) downwards, described triangular groove (25) is symmetrical arranged along cutting edge bisector of angle, the middle part of described triangular groove (25) is provided with lifts bits boss (26) along the symmetrically arranged class of cutting edge bisector of angle is leg-of-mutton, described class triangle is lifted inner side that bits boss (26) are positioned at basil arc surface (22) and is had the circular arc be obliquely installed and lift bits face (27), described triangular groove (25) connects by being connected cambered surface (28) transition with rake face (21), distance between described triangular groove (25) to side cutting edge (24) is 0.1mm-0.3mm.
2. a kind of Cutting blade for machining screw thread according to claim 1, is characterized in that, the distance between described triangular groove (25) to side cutting edge (24) is 0.2mm.
3. a kind of Cutting blade for machining screw thread according to claim 1, it is characterized in that, described rake face (21) bottom is also provided with the dregs guiding groove (4) for guiding chip to flow out along green surface side, and described dregs guiding groove (4) is connected with circular arc with described rake face (21).
4. a kind of Cutting blade for machining screw thread according to claim 3, is characterized in that, described dregs guiding groove (4) and chip direction of feed be 30 ° of-50 ° of angles, and described dregs guiding groove (4) is downward along described rake face (21), extend internally.
5. a kind of Cutting blade for machining screw thread according to claim 4, is characterized in that, described dregs guiding groove (4) and chip direction of feed are 40 ° of angles.
6. a kind of Cutting blade for machining screw thread according to claim 5, is characterized in that, the width of described dregs guiding groove (4) broadens gradually along cutting direction of feed.
7. a kind of Cutting blade for machining screw thread according to claim 6, is characterized in that, the degree of depth of described dregs guiding groove (4) deepens gradually along cutting direction of feed.
8. a kind of Cutting blade for machining screw thread according to claim 3 or 4 or 5 or 6 or 7, is characterized in that, is provided with gear bits boss (3) for guiding chip curling and flowing at the tail end of described dregs guiding groove (4).
9. a kind of Cutting blade for machining screw thread according to claim 1, is characterized in that, described cutting edge portion (2) is 3, and described cutting edge portion (2) along described centre bore (11) in array distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520536794.3U CN204975474U (en) | 2015-07-23 | 2015-07-23 | Screw thread processing knife blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520536794.3U CN204975474U (en) | 2015-07-23 | 2015-07-23 | Screw thread processing knife blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204975474U true CN204975474U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520536794.3U Active CN204975474U (en) | 2015-07-23 | 2015-07-23 | Screw thread processing knife blade |
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| CN (1) | CN204975474U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107552939A (en) * | 2016-06-30 | 2018-01-09 | 宁波江丰电子材料股份有限公司 | The welding method of target material assembly |
| CN113664234A (en) * | 2021-08-31 | 2021-11-19 | 成都工具研究所有限公司 | Precision forming cutting tool and preparation method thereof |
-
2015
- 2015-07-23 CN CN201520536794.3U patent/CN204975474U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107552939A (en) * | 2016-06-30 | 2018-01-09 | 宁波江丰电子材料股份有限公司 | The welding method of target material assembly |
| CN113664234A (en) * | 2021-08-31 | 2021-11-19 | 成都工具研究所有限公司 | Precision forming cutting tool and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |