CN1798623A - Rotatable tool and a blank - Google Patents
Rotatable tool and a blank Download PDFInfo
- Publication number
- CN1798623A CN1798623A CNA2004800153317A CN200480015331A CN1798623A CN 1798623 A CN1798623 A CN 1798623A CN A2004800153317 A CNA2004800153317 A CN A2004800153317A CN 200480015331 A CN200480015331 A CN 200480015331A CN 1798623 A CN1798623 A CN 1798623A
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- China
- Prior art keywords
- green compact
- mixture
- chip trough
- groove
- core
- 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.)
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- 239000000203 mixture Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000003754 machining Methods 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims description 25
- 238000011010 flushing procedure Methods 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 23
- 241001074085 Scophthalmus aquosus Species 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000005553 drilling Methods 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011799 hole material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/0002—Drills with connected cutting heads, e.g. with non-exchangeable cutting heads; Drills with a single insert extending across the rotational axis and having at least two radially extending cutting edges in the working position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/147—Making drill blanks
-
- 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
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
-
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/32—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools twist-drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to a method and a device for manufacturing a cutter and a cutter according to the method. The device (20) is mounted on a machine for extruding chip removing machining cutter. The device (20) comprises a housing (21), which is intended to be fastened to the extruding machine. The housing (21) has a perforated recess (24) through which a mixture to be extruded in a feed direction (F). The recess (24) includes a currentlimiting portion (27) in a nozzle (28) and a hole (30) in a die (29). The die (29) is rotatably mounted the journal relative to the nozzle (28). A core (33) is firmly fastened in the nozzle (28). A pin (35) is fixed to the core. The pin (35) is provided an axial distance from the rotatable die (29).
Description
Technical field
The present invention relates to a kind of method and apparatus that is used to make the cutter base substrate, and utilize the cutter of making according to the method for independent claims preamble.
Background technology
For example by known among the WO 98/28455: between drift and punch die with material powder, for example tungsten carbide (WC) extrudes with cobalt (Co), and then thereby material is carried out fusing of sintering cementing metal and bonding carbide, to be formed for the cutter material of chip removing machining.Described known technology has a plurality of shortcomings.The green compact (suppressing but unsintered material) that described powder produces dust and shaping can not stand any processing.And chip trough should be ground and this method needs time and energy.For example described by SE-B-9501687-9, by the carbide alloy that is blended in the carrier is carried out injection mo(u)lding, Bu Fen solution described problem.Aspect geometry, injection molding forming method has the very high free degree, but die cost is too high.
For example by US 4,779,440 and WO/0074870 be known as auger and make base substrate.The base substrate of being extruded has chip trough, and described chip trough has consistent slot pitch along the periphery of base substrate.For example at US-A-5, when utilizing elastica to test in 438,858, formed space has relatively poor position of related features.This means that chip trough and cutting edge region might be invaded in these spaces.
Summary of the invention
Purpose of the present invention is, a kind of method and apparatus is provided, and can make the flushing groove have the slot pitch of variation thus.
Another object of the present invention is, a kind of method and apparatus is provided, and can determine the length and the slot pitch of chip trough thus.
A further object of the present invention is, a kind of cutter that changes slot pitch that has is provided.
By for example a kind ofly being used to produce the method and apparatus of cutter and having realized these and other objects defined in the appended claims with reference to the accompanying drawings by the cutter that this method is produced.
Brief Description Of Drawings
Figure 1A illustrates the side view of brill;
Figure 1B, 1C and 1D illustrate the radial section according to line B-B, C-C, D-D respectively;
Fig. 1 E illustrates the stereogram of brill;
Fig. 2 A illustrates the front view that is used to produce the device of elongated green compact according to of the present invention;
Fig. 2 B illustrates the cross section of this device according to the line IIB-IIB among Fig. 2 A;
Fig. 2 C illustrates the cross section of this device according to the line IIC-IIC among Fig. 2 A;
Fig. 3 illustrates the stereogram of elongated green compact;
Fig. 4 A illustrates the front view that is used to produce the option means of elongated green compact according to of the present invention;
Fig. 4 B illustrates the cross section of this device according to the line IIB-IIB among Fig. 4 A;
Fig. 4 C illustrates the end-view of this device;
Fig. 4 D illustrates the cross section of this device according to the line IID-IID among Fig. 4 A;
Fig. 5 A illustrates the front view that is used to produce another option means of elongated green compact according to of the present invention;
Fig. 5 B illustrates the cross section of this device according to the line IIB-IIB among Fig. 5 A;
Fig. 5 C illustrates the end-view of this device;
Fig. 5 D illustrates the cross section of this device according to the line IID-IID among Fig. 5 A;
Fig. 6 A illustrates the front view that is used to produce another option means of elongated green compact according to of the present invention;
Fig. 6 B illustrates the cross section of this device according to the line IIB-IIB among Fig. 6 A;
Fig. 6 C illustrates the end-view of this device;
Fig. 6 D illustrates the cross section of this device according to the line IID-IID among Fig. 6 A.
The specific embodiment
The cutting tool according to the present invention embodiment that is shown in Figure 1A-1E is so-called auger.Bore 10 and for example extrude the carbide alloy manufacturing by firm hard material, and have chip curl groove 18 and described chip trough can be by bore whole or by an one part extension.This drilling tool is useful on the handle 11 that is fixed on the unshowned rotating shaft.This drilling tool has two top clearance face 15.All surfaces and relevant sword all utilize identical materials promptly to be preferably and extrude the carbide alloy manufacturing.At the place, cutting end of boring, the intersection between chip trough 18 and the clearance face 15 preferably forms main cutting edge 19 via strengthening inclined-plane 12.The total length that bores is set to 3 to 10 times of its diameter.Two flushing grooves 14 extend through whole brill so that carry scouring media from the top that axial rotary bores.Can radial groove be set at pommel stops up so that be particularly useful for preventing the hole.Flushing groove 14 and chip trough 18 all have the slot pitch of variation.For example the variation of the slot pitch of two flushing grooves 14 is preferably essentially identical.For example the variation of the slot pitch of two chip troughs 18 is preferably essentially identical.The variation of flushing slot pitch groove 14 and chip trough 18 is preferably essentially identical.Described slot pitch make about the centre line C L of boring the shaft angle α 1 at 16 places, cutting end of boring greater than along bore axially at the shaft angle α 2 of chip trough center.For example, the axial inner ends 17 from its cutting end 16 to chip trough, shaft angle can change between 5 and 20 °.Can utilize this brill of a kind of manufacturing at least four kinds of distinct methods.Unit " mm/ commentaries on classics " limits slot pitch.Slot pitch p is inversely proportional to about shaft angle α according to following formula: D* π/tan α=p,
Wherein D is the diameter (millimeter) of brill, and p is slot pitch (millimeter).For example, having D in radial section is that 10mm and shaft angle α are 30 ° brill, its slot pitch 10*3.14/tan (30 °)=54.4mm.
The shaft angle of the axial front portion of boring is positioned at 20 °-45 ° scope, and the shaft angle at the rear portion of boring is between 5 ° and 25 °.In the embodiment shown, this is drilled in 16 places, cutting end and has 31 ° and have 16 ° shaft angle at axial inner ends 17 places.By shaft angle being set, when drilling,, and utilize along chip trough and axially realized effective chip flow to the less shaft angle at place, rear section by the bigger anterior angle in 16 places has realized low cutting force in the end according to described geometry.And, mean that in the variation slot pitch of boring flushing groove 14 in 10 outlet of groove can be arranged on and make them provide the position of optimum efficiency for the drilling operation, and can not influence the zone of for example chip trough being carried out grinding.
In Fig. 2 A-2C, the embodiment according to device 20 of the present invention that is used to produce the elongated cylindrical green compact is shown.Term " green compact " refers to the still unsintered body of extruding herein, and term " base substrate " refers to the body of sintering.Should be noted that term " living (green) " does not relate to the color of body, and relate to extrude body.Device 20 comprises steel rectangular case 21, and it for example is used for by bolting to the unshowned machine of extruding.Housing 21 has two and is used for fixing the bolt 22 in the machine and has the rear surface 23 that is used to seal described machine.This housing has the center and connects groove 24, extrudes mixture by this groove.Groove 24 is extended so that be formed for the space 25,26 of feed worm end, Fig. 3 about rear surface 23.This groove 24 is transited into the restriction 27 of reduced in circular nozzle 28.Utilize for example carbide alloy manufacturing jet pipe 28 of high-abrasive material.Groove 24 continues to enter circular mode pipe 29 via the hole 30 of the centralized positioning with cylindrical interior then, and this mould pipe is provided with and is attached thereto near jet pipe 28.Mould pipe 29 is basic for columniform, and comprises radially outer flange 31, and this flange is used for matching with the spring bearing 32 of lid 36.The outer end of mould pipe 29 is provided with and rigidly connected whirligig of mould pipe or pinion 50.Described pinion is used for being operated by unshowned cogwheel.This mould pipe can be rotated the unconfined revolution of number with pinion 50 thus.The main direction of feed of mixture is illustrated by F.Shaft-like core 33 is recessed in the mould.Described core be rectangle and contain two elongated rigid pins 35.Described pin can be made by steel.Pin 35 is used for outstanding to form the flushing groove at green compact along direction of feed F from described core.Groove 24 stops at the open pore that is arranged in mould pipe outer end.Comprise rigid element 28 and rotatable portion 29 thus according to device of the present invention.
Brill or end mill(ing) cutter are made with following method.For example polymer or plastics mix and are configured as coccoid or graininess will to have the hard metal powders of specific cobalt content and carrier.The content of binding agent is positioned at the scope of 1-10 with percentage by weight.Term " cobalt " should be understood that metal adhesive herein, and it optionally can replace or comprise other metal with other metal, nickel for example, Ni.Subsequently mixture is preheated to the temperature that is suitable for this mixture and be filled into the machine that is used for extruding.Utilize two feed worms then, under the specified temp of specific pressure and about 180 ℃ (this temperature is temperature required far below the fusion temperature of cobalt in the prior art) mixture is pressed in the groove 24, described restriction 27 will further be suppressed mixture or material.The mixture of heat arrives core 33 places and be the described core of semicircular opening process in each side substantially by two of forming around this core then.Along direction of feed F from described core backward, this mixture fuses once more and is cylindrical body, but described from here pin 35 forms the space in body, and described space will constitute the flushing groove afterwards.Described pin is chosen as enough length, thereby so that makes the mixture cooling can avoid fusing.Pin 35 does not arrive rotating part 29, and promptly rigid pins 35 is along settings axial and 29 one-tenth certain distances of rotating mould pipe.Mixture arrives space 30 and because the friction between mixture and the hole wall makes mixture rotate subsequently.Thus, obtain cylindrical green body, its groove has the slot pitch of variation.Sintering and grinding chip trough then make it have slot pitch with the essentially identical variation of situation of flushing groove.
Like this, when green compact were extruded, mixture was admitted in the device that comprises rigidity and rotatable portion.Have flushing hole by at first making green compact be configured as, and reverse described green compact then in same device, this has clear and definite advantage.A very big advantage of this technology is, can be in same device, green compact to be extruded to having straight and flushing hole distortion, and this has just saved cost.Yet another advantage of this technology is, has realized being used to make the simple and practical scheme of distortion green compact.Thus, avoided the demand to heavy and expensive equipment, described equipment is used for from outside clamping green compact and then with its distortion.The green compact of being finished are extruded shaping thus and acquisition is complete or bird caging, also can have the flushing hole that changes slot pitch.This Plastic Forming utilization comprises the instrument realization of rigidity and optional shape part.Mixture is supplied in the rigid element of described instrument, herein, it is compressed so that be configured as the green compact with flushing hole around fixing core.Subsequently, mixture is further supplied in the rotatable portion of described instrument driving this rotatable portion synchronous with the control system of machine.This rotatable portion has the mould pipe, the mould pipe forces this green compact distortion with the frictional force between the wall in the further compression of mixture and mixture and hole 30, the rotary speed of mould pipe influences the slot pitch of flushing hole thus, this means to extrude the green compact with the flushing hole that changes slot pitch.The great advantage of this technology is, by changing the rotary speed of mould pipe, can influence the slot pitch of flushing hole in very simple mode.In this technology, can realize the slot pitch that changes by the rotary speed that under controlled condition, changes the mould pipe.Should make chip trough have the slot pitch of variation with corresponding slot pitch by the base substrate grinding is produced chip trough equally.With regard to regard to drilling in the certain material, the brill with chip trough that its slot pitch changes may be the product that is more preferably.
In Fig. 4 A-4D, an optional embodiment according to device 20 ' of the present invention is shown, this device is used to make the elongated green compact with outer grooves as shown in Figure 3.This device 20 ' at first is with the difference of device 20, device 20 ' comprises the part 42 of the setting that the end with pin 35 flushes, this part comprises two movable parts 40,41, and they are along radially giving prominence in the groove 24 that enters between jet pipe 28 and the mould pipe 29 so that suppress chip trough on green compact.Each movable part 40,41 comprises inner sphering end.This end symmetry is shaped and is arranged on the bar.Described bar extends in the hole in mid portion.Near the end, described bar is provided with shoulder.This shoulder is used for cooperating the flange in described hole, so that can be correct outstanding and entering in the space of mid portion.When extruding current green compact, extrude that material is fed in this device and at first core 33,35 of this situation by flushing hole is shaped.Subsequently, extrude material and be compressed, so that after described core place is separated, homogenized once more.Extrude material this moment through the part of chip trough Plastic Forming takes place in this device.Two cylindrical core or movable part 40,41 in this device with proper spacing for example 180 ° assemble, each described parts all has an end that is shaped according to desired chip trough profile.Sphering is preferably carried out in a described end.The bottom of described cylindrical core enters in this device with the chip trough degree of depth completely, and is connected to and is positioned at outside suitable control of described device and operating equipment automatically, and this equipment is not shown.After reaching required chip trough length, described core is retracted, and extrude material and recover it in order to required circularity that drillstock is shaped.After forming chip trough, will extrude in the rotatable portion of the further press-in device of material, this part utilizes the feasible material of extruding of frictional force to twist and thus chip trough is twisted.Rotary speed can be determined the slot pitch that chip trough obtains.Also may be combined with chip trough straight and distortion in same base substrate simultaneously, this will produce better product.
In Fig. 5 A-5D, illustrate according to device 20 of the present invention " an optional embodiment, this device is used to make the elongated green compact with outer grooves as shown in Figure 3.This device 20 " at first be two movable parts or the jaw 40 ', 41 ' of part 42 ' with device 20 ' difference.Each jaw 40 ', 41 ' comprises the inner that is provided with cutting edge.The desired profile phase of the profile of cutting edge and chip trough together.Each jaw has the chip room of himself, and this chip room is extended from the center of cutting tip, by jaw and extend to outside the device.The profile of cutting edge and the motion of jaw make chip trough profile and the synchronous change of cutting depth in extruding material.If desired, also can form the cutting tip that makes that the chip trough profile does not change with cutting depth.This means that can extrude the chip trough degree of depth with variation and the green compact of profile, this will form improved products.And then, can obtain the best end of chip room, and in device 20 ', be not the end that always needs this best.At this moment, extruding material makes green compact have straight chip trough and flushing hole.In the final stage of this device, to extrude material and calibrated accurately and further be pressed in the rotatable mould pipe 29, this mould pipe twists chip trough and flushing hole to required slot pitch.
In Fig. 6 A-6D, an optional embodiment according to device 20 of the present invention is shown, this device is used to make the elongated green compact with outer grooves as shown in Figure 3.This installs 20 and at first is part 42 with device difference of 20 ' " two movable parts or cutting tip 40 ", 41 ".Each cutting tip 40 ", 41 " comprise the inner that is provided with the sword that is essential.Make them can carry out on the pivotally supported axle two cutting tips or more a plurality of being assemblied in proper spacing.The terminal of described axle is positioned at the upside of instrument and is connected to suitable control and automatic operating equipment.The nose of cutting tip has desired chip trough profile with centre line C L 1 angle at 45 with respect to groove, and when extruding material through cutting tip, the processed and formation chip trough of material.Chip trough institute material processed by instrument is left this device.The downside of each cutting tip has the radius identical with green compact, thereby makes that this device forms tight seal when cutting tip turns round, and does not exist as cutting tip.When cutting tip was so located, chip trough shaping processing stopped and extruding material and recover in order to the required circularity of shaping drillstock.Make that extrude material processes near the condition of high temperature that produces green compact, and when the formation chip trough, material processed rather than be out of shape that the two combines, and will produce better product.
When green compact when jaw leaves because peripheral temperature, it cools off fast, and green compact continue to stretch out, until chip trough part long enough.The time that the length of green compact continues by extruding is determined.The green compact of Gu Huaing can be cut or only for example fracture by manual then, make it have suitable length, and this length is in the 5-10 of its diameter scope doubly.
When green compact have been taken out from extrude machine, it is heated in independent heating furnace, thereby described carrier is evaporated, thereby and cementing metal fusing and bonding carbide, thereby form base substrate.Then this base substrate is further processed, for example counter blade part, shank portion and clearance face are carried out grinding.
Utilize this method and device, can produce a kind of instrument, wherein wash the slot pitch that groove and chip trough all can have variation.In green compact, form after the space, make mixture through rotatable portion 29.This means that the method according to this invention promptly produced described space before being rotated.The advantage of the method according to this invention and device is thus, can use the design of economical and practical modular construction, because described part 42,42 ' and 42 " be easy to install and be not subjected to the influence of rigid pins 35.
The present invention is in no way limited to the foregoing description, but can freely change within the scope of the appended claims.Therefore the present invention is also applicable to the solid-end milling cutter.Cutter can be coated with for example Al
2O
3, coating such as TiN and/or TiCN.
Claims (9)
1. one kind is used to make for example method of auger or end mill(ing) cutter of chip removing machining rotary cutter, wherein:
A) with hard metal powders and carrier mixed with polymers for example;
B) mixture is inserted the machine that is used for extruding processing;
C) mixture is heated to the temperature that is suitable for this mixture;
D) along direction, mixture is extruded along direction of feed (F) towards the jet pipe (28) that forms the green compact diameter;
E) make be fixed to the core (33) jet pipe (28) on of mixture through rigidity, after this this mixture fuses into cylindrical body along direction of feed (F) backward from core (33), just the pin (35) that is fixed to from here on the described core forms the space in described body, will constitute the flushing groove after the described space;
F) after forming described space, make this mixture through rotatable portion (29);
G) rotate described rotatable portion (29) with respect to jet pipe (28), thereby make the frictional force between this mixture and rotatable portion force this mixture distortion, so that described space obtains the slot pitch of certain form;
H) make this mixture solidified and form green compact;
I) described green compact are taken out and sinter into base substrate from machine; After this
J) described base substrate is carried out for example grinding of possible following process.
2. according to the process of claim 1 wherein, after step e, further carry out following step:
E1) with the end of pin (35) flushes part (42 is set; 42 ', 42 "), this part comprises two movable parts (40,41; 40 ', 41 '; 40 ", 41 "), described movable part is provided in green compact chip trough being shaped.
3. according to the method for claim 2, wherein said two movable parts (40,41) suppress chip trough in green compact.
4. according to the method for claim 2, wherein said two movable parts (40 ', 41 '; 40 ", 41 ") in green compact, cut out chip trough.
5. device, be installed to the machine of extruding that is used to extrude the tool for chip removing machining green compact, described device (20) comprises housing (21), this housing is fastened to be extruded on the machine, described housing (21) has the groove (24) of perforation, mixture is extruded along direction of feed (F) by this groove, described groove (24) has restriction (27) in jet pipe (28) and the hole (30) in mould pipe (29), it is characterized in that, described mould pipe (29) carries out axle journal with respect to jet pipe (28) in rotatable mode and installs, and core (33) is fastened in the jet pipe (28), described pin (35) is fixed on the described core, and described pin (35) is along axially become certain distance to be provided with rotatable mould pipe (29).
6. according to the device of claim 5, wherein part (42 is set with the end of pin (35) flushes; 42 ', 42 "), this part comprises two movable parts (40,41; 40 ', 41 ' 40 ", 41 "), described movable part radially is projected in the groove (24) between jet pipe (28) and rotatable mould pipe (29), so that in green compact chip trough is shaped.
7. according to the device of claim 6, wherein each movable part (40,41) comprises inner sphering end so that suppress chip trough in green compact.
8. according to the device of claim 6, each movable part (40 ', 41 ' wherein; 40 ", 41 ") comprise the cutting edge that is used for chip trough being carried out machining at green compact.
9. cutter is made according among the claim 1-4 each.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0301617A SE526650C2 (en) | 2003-06-04 | 2003-06-04 | Manufacturing method for rotary tool e.g. helix drill, end mill, involves removing green body formed by solidification of mixture from machine and sintering green body to blank to allow grinding of blank after rotation of rotatable part |
| SE03016177 | 2003-06-04 | ||
| SE03018280 | 2003-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1798623A true CN1798623A (en) | 2006-07-05 |
Family
ID=20291479
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800153317A Pending CN1798623A (en) | 2003-06-04 | 2004-05-28 | Rotatable tool and a blank |
| CN200480015625XA Expired - Lifetime CN1802231B (en) | 2003-06-04 | 2004-06-02 | Rotatable tool and a blank |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480015625XA Expired - Lifetime CN1802231B (en) | 2003-06-04 | 2004-06-02 | Rotatable tool and a blank |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN1798623A (en) |
| SE (1) | SE526650C2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510789A (en) * | 2009-09-22 | 2012-06-20 | 钴领无限公司 | Blank and tool with cooling channels |
| CN103128117A (en) * | 2011-11-24 | 2013-06-05 | 山特维克知识产权股份有限公司 | Round tool blank and method and device for making the same |
| CN105555441A (en) * | 2013-09-30 | 2016-05-04 | 山高刀具公司 | Press for making a cutting tool green body having a helical flute, and method for making a cutting tool green body having a helical flute |
| CN109249188A (en) * | 2017-07-13 | 2019-01-22 | 肯纳金属公司 | For manufacturing the method and cutting head of cutting head |
| CN110103500A (en) * | 2019-04-28 | 2019-08-09 | 南京理工大学 | A kind of indexable unidirectional pressure setting of slotting cutter blade of ultrasonic wave added |
| US11911830B2 (en) | 2019-06-13 | 2024-02-27 | Kennametal India Ltd. | Indexable drilling inserts |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3488952B1 (en) * | 2017-11-24 | 2024-03-13 | Seco Tools Ab | A method for manufacturing a tool head |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1302191A (en) * | 1961-09-29 | 1962-08-24 | Stalker Drill Works Ltd | Forest |
| DE2945635A1 (en) * | 1979-11-12 | 1981-05-21 | Rohde & Dörrenberg, 4000 Düsseldorf | Helically fluted drill contg. coolant ducts - has cutting bits at tip on seating faces at acute angle to helix direction near tip |
| US5230593A (en) * | 1987-12-14 | 1993-07-27 | Mitsubishi Kinzoku Kabushiki Kaisha | Twist drill |
| JPH09277108A (en) * | 1996-02-14 | 1997-10-28 | Sumitomo Electric Ind Ltd | Drill |
| SE519135C2 (en) * | 1999-07-02 | 2003-01-21 | Seco Tools Ab | Chip separation machining tools comprising a relatively tough core connected to a relatively durable periphery |
-
2003
- 2003-06-04 SE SE0301617A patent/SE526650C2/en not_active IP Right Cessation
-
2004
- 2004-05-28 CN CNA2004800153317A patent/CN1798623A/en active Pending
- 2004-06-02 CN CN200480015625XA patent/CN1802231B/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510789A (en) * | 2009-09-22 | 2012-06-20 | 钴领无限公司 | Blank and tool with cooling channels |
| CN103128117A (en) * | 2011-11-24 | 2013-06-05 | 山特维克知识产权股份有限公司 | Round tool blank and method and device for making the same |
| CN103128117B (en) * | 2011-11-24 | 2016-04-27 | 山特维克知识产权股份有限公司 | Sphering cutter blank and the method and apparatus for the manufacture of this sphering cutter blank |
| CN105555441A (en) * | 2013-09-30 | 2016-05-04 | 山高刀具公司 | Press for making a cutting tool green body having a helical flute, and method for making a cutting tool green body having a helical flute |
| US9962856B2 (en) | 2013-09-30 | 2018-05-08 | Seco Tools Ab | Press for making a cutting tool green body having a helical flute, and method for making a cutting tool green body having a helical flute |
| CN105555441B (en) * | 2013-09-30 | 2019-01-22 | 山高刀具公司 | The method that the press and production that make the cutting tool green compact with helical flute have the cutting tool green compact of helical flute |
| CN109249188A (en) * | 2017-07-13 | 2019-01-22 | 肯纳金属公司 | For manufacturing the method and cutting head of cutting head |
| US11565356B2 (en) | 2017-07-13 | 2023-01-31 | Kennametal Inc. | Method for producing a cutting head |
| CN110103500A (en) * | 2019-04-28 | 2019-08-09 | 南京理工大学 | A kind of indexable unidirectional pressure setting of slotting cutter blade of ultrasonic wave added |
| CN110103500B (en) * | 2019-04-28 | 2021-05-14 | 南京理工大学 | Ultrasonic-assisted indexable end mill blade one-way pressing device |
| US11911830B2 (en) | 2019-06-13 | 2024-02-27 | Kennametal India Ltd. | Indexable drilling inserts |
Also Published As
| Publication number | Publication date |
|---|---|
| SE0301617L (en) | 2004-12-05 |
| SE0301617D0 (en) | 2003-06-04 |
| SE526650C2 (en) | 2005-10-18 |
| CN1802231A (en) | 2006-07-12 |
| CN1802231B (en) | 2010-05-12 |
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