US20110189046A1 - Mold for injection molding of cutting tool inserts having air gap of controlled width and method of making such inserts - Google Patents
Mold for injection molding of cutting tool inserts having air gap of controlled width and method of making such inserts Download PDFInfo
- Publication number
- US20110189046A1 US20110189046A1 US12/992,602 US99260209A US2011189046A1 US 20110189046 A1 US20110189046 A1 US 20110189046A1 US 99260209 A US99260209 A US 99260209A US 2011189046 A1 US2011189046 A1 US 2011189046A1
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- United States
- Prior art keywords
- air gap
- mold
- cutting tool
- width
- edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 41
- 238000001746 injection moulding Methods 0.000 title description 13
- 238000004519 manufacturing process Methods 0.000 title description 4
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 description 10
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 238000011049 filling Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003826 uniaxial pressing Methods 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004634 thermosetting polymer Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
Definitions
- the present invention relates to a mold for injection molding of cutting tool inserts having air gap of controlled width and method of making such inserts having cutting edges with improved properties.
- Cutting tool inserts for metal machining made of cemented carbide, cermets, ceramics etc are generally made by powder metallurgical methods mixing by wet milling to a slurry, drying the slurry to a powder with good flow properties, pressing the powder uniaxially to parts of desired shape and sintering. Uniaxial pressing is convenient to use in large scale production. However, it puts some restriction on the shape of the product to be made.
- MIM Metal Injection Molding
- Cutting tool inserts must have a sharp and well defined cutting edge. Due to air entrapment in the mold cavity the edge of injection cutting tool inserts will not be sufficiently sharp. For that reason an air gap is used along a parting line or mold insert to facilitate escaping of air. This has previously been addressed by using fixed amounts of air gap or clearance between tool components and thus making it very difficult to avoid flashing and/or rounded edges. It is typically necessary to perform grinding operations on cutting tool inserts formed in this manner to obtain an edge similar to an edge that can be obtained through a conventional powder compaction operation.
- a mold for making a cutting tool insert by MIM is provided, the cutting tool insert having an edge defined by two intersecting surfaces.
- the mold comprises a first surface, a second surface intersecting with the first surface to define an edge, and an air gap between the first surface and the second surface at the edge, the width of the air gap varying in a controlled way along its length.
- a method for making a cutting tool insert in a mold, the cutting tool insert having an edge defined by two intersecting surfaces.
- material for forming the cutting tool insert is forced into a mold cavity having a first surface and a second surface, the first surface and the second surface defining an edge. Air is removed from the mold cavity through an air gap between the first surface and the second surface at the edge, the width of the air gap varying in a controlled way along its length.
- FIG. 1 shows a metal injection molding machine with a mold.
- FIG. 2 is a side, cross-sectional view of a mold according to an aspect of the present invention.
- FIG. 3 is a top view of example mold taken at the parting between mold components 10 and 11 .
- FIG. 4 is a perspective view of a cutting tool insert of the type made with a mold according to an aspect of the present invention.
- FIG. 5 is a perspective view of a portion of a mold according to an aspect of the present invention, showing an air gap that varies in width along its length.
- FIG. 6 is a side, cross-sectional view of a mold according to another aspect of the present invention.
- FIG. 1 a schematic presentation of an injection molding machine and a mold 21 is shown.
- the material 25 is injected into one or more mold cavities 41 .
- the mold 21 is formed by closing mold components 10 , 11 and 12 thus defining the mold cavity 41 .
- FIGS. 1 and 2 A mold 21 for making a cutting tool insert 23 ( FIG. 4 ) from a material 25 to be molded is seen in FIGS. 1 and 2 in more detail.
- the cutting tool insert 23 has an edge 27 defined by two intersecting surfaces 29 and 31 .
- the mold 21 comprises a first surface 33 and a second surface 35 intersecting with the first surface to define an edge 37 .
- An air gap 39 is provided between the first surface 33 and the second surface 35 at the edge 37 . As seen in FIG. 2 , during injection of material 25 to be molded, air ahead of the flow front 43 of the material escapes the mold cavity 41 through the air gap and escapes to an air channel 45 outside of the mold cavity.
- the width of the air gap 39 varies in width in a controlled way along its length.
- the minimum width of the air gap 39 is 0 - 5 um, and the maximum width of the air gap is up to 20 um.
- the width of the air gap 39 will typically vary as a function of factors that affect the ability of the material 25 , to be molded, to flow to fill the space proximate the edge 37 .
- FIG. 5 shows an edge 37 defined by two intersecting surfaces 33 and 35 with an air gap 39 at the edge.
- the width of the air gap 39 varies along its length from a largest width W 1 at a point 48 for forming a nose of a cutting tool insert to a lesser width W 2 at a point remote from the nose, but closer to the sprue gate 47 .
- the width of the air gap 39 will typically be varied as a function of pressure at the edge 37 .
- pressure at the flow front is ordinarily reduced and it becomes increasingly difficult to force air from the mold cavity through an air gap of the same width as at a point closer to the sprue gate 47 and a larger air gap facilitates escaping of air.
- the width of the air gap 39 is varied as a function of the characteristics of the material 25 to be molded. For example, as the material 25 is more remote from the sprue gate 47 , its temperature tends to be lower and it also tends to be more viscous. At points where the temperature of the material is lower and/or it is more viscous, it is useful for the air gap to be larger than when the temperature of the material is higher and it is less viscous.
- the mold 21 is considered to be particularly useful for forming cutting tool inserts 23 in the form of cutting inserts with cutting edges 27 as seen in FIG. 4 .
- Such inserts are typically formed by molding an insert from organic binders mixed with cemented carbide powder, and subsequently sintering to form the final product.
- the powder and binder mixture is introduced to the mold cavity 41 , in an injection molding process as seen in FIGS. 1 and 2 , through a sprue gate 47 after mold components 10 , 11 and 12 have been closed relative to each other to form the mold cavity.
- an air gap 49 can also be provided at a parting line 51 that is at least partly defined by a pin 53 of the mold.
- an air gap 55 is formed at a corner 57 that is at least partly defined by a core 59 of the mold.
- An air gap is provided at any location in a mold cavity at which it might be desirable to evacuate air to facilitate formation of a feature on the cutting tool insert to be molded. The width of such air gaps is varied to facilitate evacuation of air.
- FIG. 2 shows a form that is presently considered to be particularly useful.
- the air channel 45 is substantially entirely formed in a first mold component 10 , and a second mold component 11 is formed with a shallow recess 65 . It is presently believed to be simplest to vary the depth of the shallow recess 65 to vary the width of the air gap.
- the shallow recess 65 may have a depth of 0-5 ⁇ m at a shallowest depth, and a depth of up to 20 ⁇ m at a greatest depth.
- An aspect of the present invention also relates to a method for making a cutting tool insert 23 in a mold 21 .
- the cutting tool insert 23 has an edge 27 defined by two intersecting surfaces 29 and 31 .
- material 25 for forming the cutting tool insert 23 is forced into a mold cavity 41 having a first surface 33 and a second surface 35 .
- the first surface 33 and the second surface 35 define an edge 37 .
- the size of the air gap 39 varies in width in a controlled way.
- material 25 to be molded is injected into the mold cavity 41 through a sprue gate 47 .
- the width of the air gap 39 is varied as a function of distance from the sprue gate 47 .
- the width of the air gap 39 is optimized by simulating mold filling so that the width of the air gap depends on factors such as the distance from the sprue gate 47 and the pressure acting on the material along the air gap, so as to optimize air removal but avoid formation of flash at the edge.
- the air gap 39 makes it useful for the air gap 39 to be increased in width, up to 20 gm, until it reaches a maximum width at the last points at which the mold cavity 41 is filled.
- Other points of air entrapment can also be identified, e.g. pins 53 and cores 59 , and the air gap can be modified accordingly.
- Air gap modification is the key to be able to produce net shape injection molded products possessing similar edge properties after sintering as those produced by the standard powder compaction process.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
A mold is provided for making a cutting tool insert from a material to be molded, the cutting tool insert having an edge defined by two intersecting surfaces. The mold includes a first surface, a second surface intersecting with the first surface to define an edge, and an air gap between the first surface and the second surface at the edge, the width of the air gap varying in a controlled way along its length. A method for making a cutting tool insert is also disclosed.
Description
- The present invention relates to a mold for injection molding of cutting tool inserts having air gap of controlled width and method of making such inserts having cutting edges with improved properties.
- Cutting tool inserts for metal machining made of cemented carbide, cermets, ceramics etc are generally made by powder metallurgical methods mixing by wet milling to a slurry, drying the slurry to a powder with good flow properties, pressing the powder uniaxially to parts of desired shape and sintering. Uniaxial pressing is convenient to use in large scale production. However, it puts some restriction on the shape of the product to be made.
- Injection molding is common in the plastics industry, where material containing thermoplastics or thermosetting polymers are heated and forced into a mold cavity with the desired shape. The method is often referred to as Metal Injection Molding (MIM) when used in powder technology. It combines the versatility of plastic injection molding with the strength and integrity of machined, pressed or otherwise manufactured small, complex, metal parts. The process involves mixing fine metal powders with plastic binders which allow the metal to be injected into a mold using standard plastic injection molding machines. Then the binders are removed with solvents and thermal processes and finally the part is sintered. Metal injection molded parts find use in a broad range of applications such as aerospace, automotive etc. The advantage of MIM is the possibility to produce small size parts of complex shape with good tolerances. For that reason MIM is also used in the cemented carbide industry for making inserts of complex shape which cannot be easily made by uniaxial pressing.
- Cutting tool inserts must have a sharp and well defined cutting edge. Due to air entrapment in the mold cavity the edge of injection cutting tool inserts will not be sufficiently sharp. For that reason an air gap is used along a parting line or mold insert to facilitate escaping of air. This has previously been addressed by using fixed amounts of air gap or clearance between tool components and thus making it very difficult to avoid flashing and/or rounded edges. It is typically necessary to perform grinding operations on cutting tool inserts formed in this manner to obtain an edge similar to an edge that can be obtained through a conventional powder compaction operation.
- It is desirable to provide injection cutting tool inserts formed by MIM with sharp edges while avoiding production of excessive flash or rounded edges. It is also desirable to provide a mold and a method for production of such cutting tool inserts.
- In accordance with an aspect of the present invention, a mold for making a cutting tool insert by MIM is provided, the cutting tool insert having an edge defined by two intersecting surfaces. The mold comprises a first surface, a second surface intersecting with the first surface to define an edge, and an air gap between the first surface and the second surface at the edge, the width of the air gap varying in a controlled way along its length.
- In accordance with another aspect of the present invention, a method is provided for making a cutting tool insert in a mold, the cutting tool insert having an edge defined by two intersecting surfaces. According to the method, material for forming the cutting tool insert is forced into a mold cavity having a first surface and a second surface, the first surface and the second surface defining an edge. Air is removed from the mold cavity through an air gap between the first surface and the second surface at the edge, the width of the air gap varying in a controlled way along its length.
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FIG. 1 shows a metal injection molding machine with a mold. -
FIG. 2 is a side, cross-sectional view of a mold according to an aspect of the present invention. -
FIG. 3 is a top view of example mold taken at the parting betweenmold components -
FIG. 4 is a perspective view of a cutting tool insert of the type made with a mold according to an aspect of the present invention. -
FIG. 5 is a perspective view of a portion of a mold according to an aspect of the present invention, showing an air gap that varies in width along its length. -
FIG. 6 is a side, cross-sectional view of a mold according to another aspect of the present invention. - In
FIG. 1 a schematic presentation of an injection molding machine and amold 21 is shown. Thematerial 25 is injected into one ormore mold cavities 41. Themold 21 is formed by closingmold components mold cavity 41. - A
mold 21 for making a cutting tool insert 23 (FIG. 4 ) from amaterial 25 to be molded is seen inFIGS. 1 and 2 in more detail. As seen inFIG. 4 , thecutting tool insert 23 has anedge 27 defined by twointersecting surfaces mold 21 comprises afirst surface 33 and asecond surface 35 intersecting with the first surface to define anedge 37. - An
air gap 39 is provided between thefirst surface 33 and thesecond surface 35 at theedge 37. As seen inFIG. 2 , during injection ofmaterial 25 to be molded, air ahead of theflow front 43 of the material escapes themold cavity 41 through the air gap and escapes to anair channel 45 outside of the mold cavity. - The width of the
air gap 39 varies in width in a controlled way along its length. The minimum width of theair gap 39 is 0-5 um, and the maximum width of the air gap is up to 20 um. The width of theair gap 39 will typically vary as a function of factors that affect the ability of thematerial 25, to be molded, to flow to fill the space proximate theedge 37. - For example, in an injection molding operation as shown in
FIGS. 1 , 2 and 3 the width of theair gap 39 is varied as a function of distance from asprue gate 47.FIG. 5 shows anedge 37 defined by twointersecting surfaces air gap 39 at the edge. The width of theair gap 39 varies along its length from a largest width W1 at apoint 48 for forming a nose of a cutting tool insert to a lesser width W2 at a point remote from the nose, but closer to thesprue gate 47. - The width of the
air gap 39 will typically be varied as a function of pressure at theedge 37. For example, as theflow front 43 is more remote from thesprue gate 47, pressure at the flow front is ordinarily reduced and it becomes increasingly difficult to force air from the mold cavity through an air gap of the same width as at a point closer to thesprue gate 47 and a larger air gap facilitates escaping of air. - The width of the
air gap 39 is varied as a function of the characteristics of thematerial 25 to be molded. For example, as thematerial 25 is more remote from thesprue gate 47, its temperature tends to be lower and it also tends to be more viscous. At points where the temperature of the material is lower and/or it is more viscous, it is useful for the air gap to be larger than when the temperature of the material is higher and it is less viscous. - The
mold 21 is considered to be particularly useful for formingcutting tool inserts 23 in the form of cutting inserts withcutting edges 27 as seen inFIG. 4 . Such inserts are typically formed by molding an insert from organic binders mixed with cemented carbide powder, and subsequently sintering to form the final product. The powder and binder mixture is introduced to themold cavity 41, in an injection molding process as seen inFIGS. 1 and 2 , through asprue gate 47 aftermold components - While the
air gap 39 at the edge, that is used for forming a cutting edge of a cutting insert, is particularly useful for forming a cutting edge requiring little or no subsequent machining after sintering, as seen inFIG. 6 , anair gap 49 can also be provided at aparting line 51 that is at least partly defined by apin 53 of the mold. Similarly, anair gap 55 is formed at acorner 57 that is at least partly defined by acore 59 of the mold. An air gap is provided at any location in a mold cavity at which it might be desirable to evacuate air to facilitate formation of a feature on the cutting tool insert to be molded. The width of such air gaps is varied to facilitate evacuation of air. - While the
air gap 39 can have a variety of suitable forms,FIG. 2 shows a form that is presently considered to be particularly useful. Theair channel 45 is substantially entirely formed in afirst mold component 10, and asecond mold component 11 is formed with ashallow recess 65. It is presently believed to be simplest to vary the depth of theshallow recess 65 to vary the width of the air gap. For example, theshallow recess 65 may have a depth of 0-5 μm at a shallowest depth, and a depth of up to 20 μm at a greatest depth. An aspect of the present invention also relates to a method for making a cutting tool insert 23 in amold 21. Thecutting tool insert 23 has anedge 27 defined by twointersecting surfaces material 25 for forming thecutting tool insert 23 is forced into amold cavity 41 having afirst surface 33 and asecond surface 35. Thefirst surface 33 and thesecond surface 35 define anedge 37. Air escapes from themold cavity 41 through anair gap 39 between thefirst surface 33 and thesecond surface 35 at theedge 37. The size of theair gap 39 varies in width in a controlled way. - In an injection molding operation,
material 25 to be molded is injected into themold cavity 41 through asprue gate 47. The width of theair gap 39 is varied as a function of distance from thesprue gate 47. The width of theair gap 39 is optimized by simulating mold filling so that the width of the air gap depends on factors such as the distance from thesprue gate 47 and the pressure acting on the material along the air gap, so as to optimize air removal but avoid formation of flash at the edge. By using this method it is thereby possible to produce cutting tool inserts by the use of powder injection molding to net shape, requiring essentially no grinding to create a useable cutting edge on the cutting tool insert. - By using simulation of mold filling for the injection molding process it is possible to calculate the time and the pressure which the material 25 acts on the air gap, and also at what temperature it so does. Close to the
sprue gate 47 thematerial 25 is typically warmer, and possesses lower viscosity, and acts on the air gap 39 a longer time, during injection ofmaterial 25, and to avoid flashing, theair gap 39 should be small, 0-5 μm. The farther away from thesprue gate 47 thematerial 25 flows, the temperature is reduced, which increases viscosity, and the pressure acting on theair gap 39 drops. This, in combination with increasing amounts of entrapped air, makes it useful for theair gap 39 to be increased in width, up to 20 gm, until it reaches a maximum width at the last points at which themold cavity 41 is filled. Other points of air entrapment can also be identified, e.g. pins 53 andcores 59, and the air gap can be modified accordingly. - Key factors for successful air gap modification are knowledge of characteristic properties of the molded
material 25, tool design and the mold filling simulation process. Air gap modification is the key to be able to produce net shape injection molded products possessing similar edge properties after sintering as those produced by the standard powder compaction process. - The present invention has been described with reference to cutting tool inserts. It is obvious that it can be applied also to other products where a sharp, well defined, edge is of importance for the properties of the product.
- The disclosures in Swedish patent application No. 0801071-2, from which this application claims priority, are incorporated herein by reference.
Claims (10)
1. A mold 21 for making a cutting tool insert from a material to be molded, the cutting tool insert having an edge defined by two intersecting surfaces and, comprising: a first surface, a second surface intersecting with the first surface to define a edge, and an air gap between the first surface and the second surface at the edge, wherein the width of the air gap varies in a controlled way along its length.
2. The mold as set forth in claim 1 , wherein a minimum width of the air gap is 0-5 μm.
3. The mold as set forth in claim 2 , wherein a maximum width of the air gap is up to 0-5 μm.
4. The mold as set forth in claim 1 , wherein a maximum width of the air gap is up to 0-5 μm.
5. The mold as set forth in claim 1 , comprising a sprue gate, wherein the width of the air gap varies as a function of distance from the sprue gate.
6. The mold as set forth in claim 1 , wherein the width of the air gap varies as a function of pressure at the edge.
7. The mold as set forth in claim 1 , wherein the width of the air gap varies as a function of characteristics of the material to be molded.
8. The mold as set forth in claim 1 , wherein the width of the air gap varies as a function of temperature of the material to be molded.
9. A method for making a cutting tool insert in a mold 21 , the cutting tool insert having an edge defined by two intersecting surfaces and , comprising: injecting material for forming the cutting tool insert into a mold cavity having a first surface and a second surface, the first surface and the second surface defining an edge, and air escaping from the mold cavity through an air gap between the first surface and the second surface at the edge, wherein the width of the air gap varies in a controlled way along its length.
10. The method as set forth in claim 9 , comprising injecting material to be molded into the mold cavity through a sprue gate, wherein the width of the air gap varies as a function of distance from the sprue gate.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0801071A SE533916C2 (en) | 2008-05-13 | 2008-05-13 | Form for injection molding of cutter tools having an air gap of controlled width and a method of making such cutters |
SE0801071-2 | 2008-05-13 | ||
PCT/SE2009/050506 WO2009139700A1 (en) | 2008-05-13 | 2009-05-08 | Mold for injection molding of cutting tool inserts having air gap of controlled width and method of making such inserts |
Publications (1)
Publication Number | Publication Date |
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US20110189046A1 true US20110189046A1 (en) | 2011-08-04 |
Family
ID=41318915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/992,602 Abandoned US20110189046A1 (en) | 2008-05-13 | 2009-05-08 | Mold for injection molding of cutting tool inserts having air gap of controlled width and method of making such inserts |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110189046A1 (en) |
CN (1) | CN102026751B (en) |
DE (1) | DE112009001138T5 (en) |
SE (1) | SE533916C2 (en) |
WO (1) | WO2009139700A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017047601A (en) * | 2015-09-01 | 2017-03-09 | 京セラ株式会社 | Manufacturing method of cutting tool tip |
JP2017047600A (en) * | 2015-09-01 | 2017-03-09 | 京セラ株式会社 | Manufacturing method of cutting tool tip |
WO2017038929A1 (en) * | 2015-09-01 | 2017-03-09 | 京セラ株式会社 | Method for manufacturing tip for cutting tool |
JP2017066426A (en) * | 2015-09-28 | 2017-04-06 | 京セラ株式会社 | Method for manufacturing cutting-tool tip |
WO2017111001A1 (en) * | 2015-12-25 | 2017-06-29 | 京セラ株式会社 | Tip for cutting tool, cutting tool, and method for manufacturing same |
JP2018051643A (en) * | 2016-09-21 | 2018-04-05 | 株式会社タンガロイ | Cutting insert and manufacturing method thereof |
US10022845B2 (en) | 2014-01-16 | 2018-07-17 | Milwaukee Electric Tool Corporation | Tool bit |
USD921468S1 (en) | 2018-08-10 | 2021-06-08 | Milwaukee Electric Tool Corporation | Driver bit |
US11364540B2 (en) | 2015-09-01 | 2022-06-21 | Kyocera Corporation | Method of manufacturing tip of cutting tool |
US11638987B2 (en) | 2017-12-01 | 2023-05-02 | Milwaukee Electric Tool Corporation | Wear resistant tool bit |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3150303A1 (en) | 2015-09-29 | 2017-04-05 | Sandvik Intellectual Property AB | A moulding tool and a method for powder injection moulding a cemented carbide or cermet component |
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GB2030509A (en) * | 1978-08-17 | 1980-04-10 | Demag Kunststofftech | Process and apparatus for the manufacture of ceramic mouldings by injection-stamping |
US4473526A (en) * | 1980-01-23 | 1984-09-25 | Eugen Buhler | Method of manufacturing dry-pressed molded articles |
US4906294A (en) * | 1987-04-21 | 1990-03-06 | Fried. Krupp Gesellschaft Mit Beschrankter Haftung | Cutting tool produced by sintering a blank formed by a pressing tool |
US20060047309A1 (en) * | 2004-08-25 | 2006-03-02 | Cichocki Frank R Jr | Metal injection molded suture needles |
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GB792351A (en) * | 1954-12-27 | 1958-03-26 | Shenango China Inc | Dies for pressing green ceramic objects |
JP2002346716A (en) * | 2001-05-24 | 2002-12-04 | Toyota Industries Corp | Die-casting die |
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2008
- 2008-05-13 SE SE0801071A patent/SE533916C2/en not_active IP Right Cessation
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2009
- 2009-05-08 WO PCT/SE2009/050506 patent/WO2009139700A1/en active Application Filing
- 2009-05-08 US US12/992,602 patent/US20110189046A1/en not_active Abandoned
- 2009-05-08 DE DE112009001138T patent/DE112009001138T5/en not_active Withdrawn
- 2009-05-08 CN CN2009801175744A patent/CN102026751B/en not_active Expired - Fee Related
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GB2030509A (en) * | 1978-08-17 | 1980-04-10 | Demag Kunststofftech | Process and apparatus for the manufacture of ceramic mouldings by injection-stamping |
US4473526A (en) * | 1980-01-23 | 1984-09-25 | Eugen Buhler | Method of manufacturing dry-pressed molded articles |
US4906294A (en) * | 1987-04-21 | 1990-03-06 | Fried. Krupp Gesellschaft Mit Beschrankter Haftung | Cutting tool produced by sintering a blank formed by a pressing tool |
US20060047309A1 (en) * | 2004-08-25 | 2006-03-02 | Cichocki Frank R Jr | Metal injection molded suture needles |
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JP2017047600A (en) * | 2015-09-01 | 2017-03-09 | 京セラ株式会社 | Manufacturing method of cutting tool tip |
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JP2017047601A (en) * | 2015-09-01 | 2017-03-09 | 京セラ株式会社 | Manufacturing method of cutting tool tip |
US11364540B2 (en) | 2015-09-01 | 2022-06-21 | Kyocera Corporation | Method of manufacturing tip of cutting tool |
JP2017066426A (en) * | 2015-09-28 | 2017-04-06 | 京セラ株式会社 | Method for manufacturing cutting-tool tip |
JP2017113850A (en) * | 2015-12-25 | 2017-06-29 | 京セラ株式会社 | Cutting tool tip and method for manufacturing the same |
WO2017111001A1 (en) * | 2015-12-25 | 2017-06-29 | 京セラ株式会社 | Tip for cutting tool, cutting tool, and method for manufacturing same |
JP2018051643A (en) * | 2016-09-21 | 2018-04-05 | 株式会社タンガロイ | Cutting insert and manufacturing method thereof |
US11638987B2 (en) | 2017-12-01 | 2023-05-02 | Milwaukee Electric Tool Corporation | Wear resistant tool bit |
US11958168B2 (en) | 2017-12-01 | 2024-04-16 | Milwaukee Electric Tool Corporation | Wear resistant tool bit |
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USD955843S1 (en) | 2018-08-10 | 2022-06-28 | Milwaukee Electric Tool Corporation | Driver bit |
Also Published As
Publication number | Publication date |
---|---|
SE0801071L (en) | 2009-11-14 |
DE112009001138T5 (en) | 2011-05-26 |
SE533916C2 (en) | 2011-03-01 |
CN102026751B (en) | 2013-10-30 |
WO2009139700A1 (en) | 2009-11-19 |
CN102026751A (en) | 2011-04-20 |
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