CN203991733U - Band screw cooling hole bar extruding mould - Google Patents
Band screw cooling hole bar extruding mould Download PDFInfo
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- CN203991733U CN203991733U CN201420451157.1U CN201420451157U CN203991733U CN 203991733 U CN203991733 U CN 203991733U CN 201420451157 U CN201420451157 U CN 201420451157U CN 203991733 U CN203991733 U CN 203991733U
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- hole
- bar
- screw cooling
- cooling hole
- extruding mould
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Abstract
The utility model relates to a kind of band screw cooling hole bar extruding mould, comprise inner hollow extrusion nozzle, be arranged on support in described extrusion nozzle, be arranged on the core print seat on described support and be arranged on the core bar on described core print seat, the die cavity inwall of described extrusion nozzle is provided with a plurality of helical tooth bars, and described core bar stretches in described die cavity at least partly.The hard alloy bar that the utility model is produced can be at compression stage straight forming screw cooling hole, improved production efficiency, and cancelled following process link, reduced production cost, improved production efficiency, and spiral angle is good, spiral angle deviation can be controlled at ± 2 ° in, after product sintering, be difficult for cracking, improved product percent of pass.
Description
Technical field
The utility model relates to a kind of extrusion die, relates in particular to a kind of band screw cooling hole bar extruding mould.
Background technology
In use, due to work under bad environment, easily heating, wearing and tearing, in order to increase the service life, adopt cooling fluid to carry out cooling can achieving the goal to carbide drill.The mode of original adoption external refrigeration, this mode is fine under the operating mode of boring shallow bore hole, but when drilling deep hole, because chip is constantly discharged, cooling fluid is difficult to arrive the top of drill bit work from outside, do not reach desirable cooling effect.Therefore there is the carbide drill of cold threaded hole in band, drill bit in the course of the work, cooling fluid is by the interior cold threaded hole in drill bit, under high pressure conditions, directly arrive the top of drill bit, can reduce rapidly the high temperature at drill bit top, to cut chip removes simultaneously, improve the surface smoothness of workpiece, and hole working (machining) efficiency improved more than 50%, drilling life of bit improves nearly one times.
Hard alloy bar is the raw material of manufacturing carbide drill, how to produce this bar with screw cooling hole, and the hard alloy blank that processing drill is used is to realize the key that drill bit working (machining) efficiency improves, improve service life.The bar of producing in industry at present with screw cooling hole adopts heat to turn round method.As shown in Figure 1, the hard alloy bar 1 of the sintering with two or more is anchored between two chucks 2, bar 1 is heated to uniform temperature, then by chuck 2 relative torsions to certain angle, can produce the hard alloy bar with screw cooling hole.But this mode of production efficiency is low, after hard alloy bar heats again, grain growth, degradation, and while reversing bar, easily produce Surface of Rod Bar defect, percent defective is high.
Utility model content
The utility model has overcome the deficiencies in the prior art, and a kind of band screw cooling hole bar extruding mould simple in structure is provided.
For achieving the above object, the technical solution adopted in the utility model is: a kind of band screw cooling hole bar extruding mould, comprise inner hollow extrusion nozzle, be arranged on support in described extrusion nozzle, be arranged on the core print seat on described support and be arranged on the core bar on described core print seat, the die cavity inwall of described extrusion nozzle is provided with a plurality of helical tooth bars, and described core bar stretches in described die cavity at least partly.
In preferred embodiment of the utility model, band screw cooling hole bar extruding mould further comprises and in described extrusion nozzle, is provided with successively from top to bottom first step hole, the first reverse taper hole, the large bottom, top in described first step hole is little, and described the first reverse taper hole communicates with described die cavity.
In preferred embodiment of the utility model, with screw cooling hole bar extruding mould, further comprise that the diameter of described die cavity is that 50-200mm, length are 150-300mm.
In preferred embodiment of the utility model, with screw cooling hole bar extruding mould further comprise the upper diameter in described first step hole be 80-300mm, highly for 35-55mm.
In preferred embodiment of the utility model, with screw cooling hole bar extruding mould, further comprise that the angle of described the first reverse taper hole is that 30-100 °, the degree of depth are 25-40mm.
In preferred embodiment of the utility model, with screw cooling hole bar extruding mould further comprise described support comprise hollow tubular support body, be located at the riser in described tubular support body.
In preferred embodiment of the utility model, band screw cooling hole bar extruding mould further comprises that described riser edge is vertically to being provided with two second step holes, large bottom, top, described second step hole is little, and described core print seat is arranged in described second step hole at least partly.
In preferred embodiment of the utility model, with screw cooling hole bar extruding mould further comprise the upper diameter in described second step hole be 5.0-7.0mm, highly for 5.0-9.0mm, lower diameter is that 3.0-6.0mm, the degree of depth are 40-60mm.
In preferred embodiment of the utility model, band screw cooling hole bar extruding mould further comprises that described core print seat edge is vertically to being provided with pilot hole, and the diameter of described pilot hole is 2.0-3.0mm.
In preferred embodiment of the utility model, band screw cooling hole bar extruding mould further comprises that large bottom, described core bar top is little, the bottom of described core bar is through described pilot hole, and the lower diameter of described core bar is than the little 0.1-0.2mm of the diameter of described pilot hole.
The utility model has solved the defect existing in background technology, the hard alloy bar that the utility model is produced can be at compression stage straight forming screw cooling hole, improved production efficiency, and cancelled following process link, reduced production cost, improved production efficiency, and spiral angle is good, spiral angle deviation can be controlled at ± 2 ° in, after product sintering, be difficult for cracking, improved product percent of pass.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of the device of existing processing screw cooling hole;
Fig. 2 is the decomposition texture schematic diagram of preferred embodiment of the present utility model;
Fig. 3 is the sectional plan view of preferred embodiment of the present utility model;
Fig. 4 is the sectional plan view of the extrusion nozzle of preferred embodiment of the present utility model;
Fig. 5 is the front view of the support of preferred embodiment of the present utility model;
Fig. 6 is the top view of the support of preferred embodiment of the present utility model;
Fig. 7 is the front view of the core print seat of preferred embodiment of the present utility model;
Fig. 8 is the front view of the core bar of preferred embodiment of the present utility model;
In figure: 10, extrusion nozzle, 12, support, 14, core print seat, 16, core bar, 18, die cavity, 20, tooth bar, 22, first step hole, the 24, first reverse taper hole, 26, tubular support body, 28, riser, 30, inner chamber, 32, second step hole, 34, pilot hole.
The specific embodiment
In conjunction with the accompanying drawings and embodiments the utility model is described in further detail now, these accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model is only described in a schematic way, so it only show the formation relevant with the utility model.
As shown in Figure 2 and Figure 3, a kind of band screw cooling hole bar extruding mould, comprise inner hollow extrusion nozzle 10, be arranged on support 12 in extrusion nozzle 10, be arranged on the core print seat 14 on support 12 and be arranged on the core bar 16 on core print seat 14, die cavity 18 inwalls of extrusion nozzle 10 are provided with a plurality of helical tooth bars 20, preferably die cavity 18 is cylindric, the thickness of tooth bar 20 is 0.5-3.5mm, and core bar 16 stretches in die cavity 18 at least partly.
As shown in Figure 4, the outer radius portion of the preferred extrusion nozzle 10 of the utility model is the little step in large bottom, top, be convenient to be fastened on extruder oral area, be difficult for loosening, in extrusion nozzle 10, be provided with successively from top to bottom first step hole 22, the first reverse taper hole 24, the first reverse taper hole 24 communicates with die cavity 18, the large bottom, top in first step hole 22 is little, the upper diameter d1 in first step hole 22 is 80-300mm, height h1 is 35-55mm, the angle A of the first reverse taper hole 24 is 30-100 °, degree of depth h2 is 25-40mm, the diameter d 2 of die cavity 18 is 50-200mm, length h3 is 150-300mm.
As shown in Figure 5, Figure 6, the preferred support 12 of the utility model comprise hollow tubular support body 26, be located at the riser 28 in tubular support body 26, the outside diameter d 3 of tubular support body 26 is 50-100mm, height h4 is 15-35mm, tubular support body 26 be arranged in the first step hole 22 of extrusion nozzle 10 and with first step hole 22 matched in clearance, the inner chamber 30 of tubular support body 26 is back taper, and the tapering of inner chamber 30 is identical with the angle A of the first reverse taper hole 24, is convenient to the extruding of powder.Riser 28 edges are vertically to being provided with two second step holes 32, 32 large bottoms, top, second step hole are little, the upper diameter d4 in second step hole 32 is 5.0-7.0mm, height h5 is 5.0-9.0mm, lower diameter d 5 is 3.0-6.0mm, degree of depth h6 is 40-60mm, distance d6 between two second step holes 32 is 10-20mm, the outer radius portion of core print seat 14 is the little step in large bottom, top, the lower diameter d 7 of core print seat 14 is 3.0-6.0mm, core print seat 14 adopts gap fiting mode to be arranged in the second step hole 32 of support 12 at least partly, as shown in Figure 7, core print seat 14 edges are vertically to being provided with pilot hole 34, the diameter d 8 of pilot hole 34 is 1.0-3.0mm, as shown in Figure 8, core bar 16 large bottoms, top are little, the lower diameter d 9 of core bar 16 is than the little 0.1-0.2mm of the diameter d of pilot hole 34 8, the upper diameter of core bar 16 is greater than the diameter d 8 of pilot hole 34, the bottom of core bar 8 is through pilot hole 34, between core print seat 14 and core bar 16, adopt glue to carry out fastening.
The preferred core bar 16 of the utility model adopts flexible corrosion-resistant material to make, and further the corrosion-resistant material of preferred flexible is resin, but is not limited to resin, can be also plastics.The preferred extrusion nozzle 10 of the utility model, support 12 and core print seat 14 all adopt carbide alloy to make, stabilized structure, and reliability is high, but is not limited to carbide alloy, can be also tool steel or bearing steel.The inner chamber 30 of die cavity 18, tubular support body 26, core print seat 14 external diameter positions are all smooth shape, are convenient to the extruding of powder, push smooth and easy, extruding efficiency high.
During use; the utility model is assembled on extruder, in extruder, packs powder into, adjust the pressure of extruder; extruder applies certain pressure to powder wherein; powder can the die cavity 18 along with extrusion nozzle 10 in helical tooth bar 20 rotations, because core bar 16 has pliability, core bar 16 can be shown along with the rotation of powder corresponding angle; thereby squeeze out the hard alloy bar with screw cooling hole in the die cavity 18 of extrusion nozzle 10; after extruding, shut down, unload extrusion die.
Above foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, related personnel can, within not departing from the scope of this utility model technological thought, carry out various change and modification completely.The technical scope of this utility model is not limited to the content on description, must determine technical scope according to claim scope.
Claims (10)
1. be with screw cooling hole bar extruding mould for one kind, it is characterized in that: comprise inner hollow extrusion nozzle, be arranged on support in described extrusion nozzle, be arranged on the core print seat on described support and be arranged on the core bar on described core print seat, the die cavity inwall of described extrusion nozzle is provided with a plurality of helical tooth bars, and described core bar stretches in described die cavity at least partly.
2. band screw cooling hole bar extruding mould according to claim 1, it is characterized in that: in described extrusion nozzle, be provided with successively from top to bottom first step hole, the first reverse taper hole, the large bottom, top in described first step hole is little, and described the first reverse taper hole communicates with described die cavity.
3. band screw cooling hole bar extruding mould according to claim 2, is characterized in that: the diameter of described die cavity is that 50-200mm, length are 150-300mm.
4. band screw cooling hole bar extruding mould according to claim 2, is characterized in that: the upper diameter in described first step hole is 80-300mm, is highly 35-55mm.
5. band screw cooling hole bar extruding mould according to claim 2, is characterized in that: the angle of described the first reverse taper hole is that 30-100 °, the degree of depth are 25-40mm.
6. band screw cooling hole bar extruding mould according to claim 1, is characterized in that: described support comprise hollow tubular support body, be located at the riser in described tubular support body.
7. band screw cooling hole bar extruding mould according to claim 6, it is characterized in that: described riser edge is vertically to being provided with two second step holes, large bottom, top, described second step hole is little, and described core print seat is arranged in described second step hole at least partly.
8. band screw cooling hole bar extruding mould according to claim 7, is characterized in that: the upper diameter in described second step hole is 5.0-7.0mm, is highly 5.0-9.0mm, and lower diameter is that 3.0-6.0mm, the degree of depth are 40-60mm.
9. band screw cooling hole bar extruding mould according to claim 1, is characterized in that: described core print seat edge is vertically to being provided with pilot hole, and the diameter of described pilot hole is 2.0-3.0mm.
10. band screw cooling hole bar extruding mould according to claim 9, it is characterized in that: large bottom, described core bar top is little, the bottom of described core bar is through described pilot hole, and the lower diameter of described core bar is than the little 0.1-0.2mm of the diameter of described pilot hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451157.1U CN203991733U (en) | 2014-08-12 | 2014-08-12 | Band screw cooling hole bar extruding mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420451157.1U CN203991733U (en) | 2014-08-12 | 2014-08-12 | Band screw cooling hole bar extruding mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203991733U true CN203991733U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420451157.1U Expired - Fee Related CN203991733U (en) | 2014-08-12 | 2014-08-12 | Band screw cooling hole bar extruding mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203991733U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855310A (en) * | 2016-06-02 | 2016-08-17 | 苏州瑞森硬质合金有限公司 | High-stability spiral inner cooling hole alloy bar material device |
| CN110947973A (en) * | 2019-11-07 | 2020-04-03 | 湖南工业大学 | Forming method of hard alloy bar with spiral hole |
| CN110976877A (en) * | 2019-11-07 | 2020-04-10 | 湖南工业大学 | Forming method of hard alloy bar with inner hole |
| CN111468732A (en) * | 2020-04-29 | 2020-07-31 | 江西耀升钨业股份有限公司 | Hard alloy cutter with internal spiral cooling liquid hole and production equipment thereof |
| CN111974821A (en) * | 2020-08-21 | 2020-11-24 | 常宁市隆源铜业有限公司 | Novel square copper sinle silk processing device |
-
2014
- 2014-08-12 CN CN201420451157.1U patent/CN203991733U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855310A (en) * | 2016-06-02 | 2016-08-17 | 苏州瑞森硬质合金有限公司 | High-stability spiral inner cooling hole alloy bar material device |
| CN110947973A (en) * | 2019-11-07 | 2020-04-03 | 湖南工业大学 | Forming method of hard alloy bar with spiral hole |
| CN110976877A (en) * | 2019-11-07 | 2020-04-10 | 湖南工业大学 | Forming method of hard alloy bar with inner hole |
| CN111468732A (en) * | 2020-04-29 | 2020-07-31 | 江西耀升钨业股份有限公司 | Hard alloy cutter with internal spiral cooling liquid hole and production equipment thereof |
| CN111974821A (en) * | 2020-08-21 | 2020-11-24 | 常宁市隆源铜业有限公司 | Novel square copper sinle silk processing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160812 |