CN109623034A - Detachable reversed rose reamer and preparation method thereof - Google Patents
Detachable reversed rose reamer and preparation method thereof Download PDFInfo
- Publication number
- CN109623034A CN109623034A CN201710930431.1A CN201710930431A CN109623034A CN 109623034 A CN109623034 A CN 109623034A CN 201710930431 A CN201710930431 A CN 201710930431A CN 109623034 A CN109623034 A CN 109623034A
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- cutter head
- knife handle
- reversed
- detachable
- rose reamer
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- 241000220317 Rosa Species 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims description 26
- 238000000034 method Methods 0.000 claims abstract description 37
- 238000005520 cutting process Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 16
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000005496 tempering Methods 0.000 claims description 9
- 238000010791 quenching Methods 0.000 claims description 7
- 230000000171 quenching effect Effects 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000010721 machine oil Substances 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000007547 defect Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000003754 machining Methods 0.000 description 7
- 229910001566 austenite Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
Abstract
The present invention provides a kind of detachable reversed rose reamer, comprising: knife handle and cutter head；Wherein, cutter head is detachably connected with knife handle；The cutting ontology of cutter head is frustroconical；The basal diameter of frustroconical is greater than chamfering bore dia；The top surface diameter of frustroconical is less than the diameter of chamfered bore.It the advantage is that the processing limitation for overcoming the reversed rose reamer of existing integral type, it technically gives and makes up, substantially reduce cutter manufacture and purchase cost, processing efficiency is also improved simultaneously, it is entirely capable of replacing the operation of artificial 2 times common scrapers, thoroughly solve due to unreasonable operation by hand and bring inside parts chamfering is uneven, burr residual, internal scratches etc. different degrees of mass defect；It further solves to produce the waste of high purchase cost, the phenomenon that quality level is low, and product rejection rate is high, and process velocity is slow, low efficiency.
Description
Technical field
The present invention relates to cutting-tool engineering field, in particular to the essence of the reversed chamfer machining of internal control to be used in a kind of machine-building
Close cutter and preparation method thereof.
Background technique
It is some gradually to be carried out by the external components for dominating complexity with the fast development of domestic precision machinery manufacture field
Production domesticization, but since the limitation of equipment, technical method, personnel's experience, process tool etc. factor leads to some key technologies
Main points can not efficiently be broken through.Current more complicated valve cavity part is related to staggered floor processing, internal cavity distribution again
Miscellaneous, burr chamfering requires strictly, and the existing reversed chamfering tool overwhelming majority of inner hole is that knife handle is integrated with cutter head, and price is high
It is expensive, operating process is unsatisfactory, processing quality is unstable.In the case where no more rational solution, the overwhelming majority is intracavitary
Chamfering still take manual 2 scrapers, this also causes inside parts chamfering uneven occur, burr residual, internal scratch etc.
Different degrees of mass defect.A kind of highly desirable reversed rose reamer for having new low cost is tired thoroughly to solve the above technology
It is difficult.
Summary of the invention
The purpose of the present invention is intended to provide a kind of detachable reversed rose reamer and preparation method thereof, fundamentally solve due to
The limitation of inside parts space can not be carried out effectively to the one-time formed quick chamfering technical difficulty of lower and upper progresss precision, in solution
Technical problem is stated, to overcome the existing defects of the above-mentioned prior art.
The present invention provides a kind of detachable reversed rose reamer, comprising: knife handle and cutter head；Wherein, cutter head and knife handle are detachable
Connection；The cutting ontology of cutter head is frustroconical；The basal diameter of frustroconical is greater than chamfering bore dia；Frustroconical
Top surface diameter be less than chamfered bore diameter.
Further, the present invention provides a kind of detachable reversed rose reamer, can also have the following features: knife handle and cutter head
Screw thread with matching, knife handle and cutter head are engaged by screw thread and are connected.
Further, the present invention provides a kind of detachable reversed rose reamer, can also have the following features: knife handle and cutter head
Screw thread tightening direction and cutting stress direction it is in the same direction.
Further, the present invention provides a kind of detachable reversed rose reamer, can also have the following features: frustroconical
Bottom surface have dismounting boss.
Preferably, the shape of dismounting boss is regular polygon.
Preferably, the height of dismounting boss is not less than 2 millimeters.
Further, the present invention provides a kind of detachable reversed rose reamer, can also have the following features: the bottom of cutter head
With dismounting card slot.
Preferably, the shape of dismounting card slot is "-" type or cross or hexangle type or blossom type.
Preferably, the depth of dismounting card slot is not less than 2 millimeters.
Further, the present invention provides a kind of detachable reversed rose reamer, and can also have the following features: further includes at least
One positioning pin；The top of frustroconical has positioning convex platform；Positioning convex platform has the cutter head hole to match with positioning pin；Cutter head
Hole extends transversely through positioning convex platform；The bottom of knife handle has locating slot；Locating slot has the knife handle hole to match with positioning pin；Knife handle hole
Extend transversely through locating slot；Positioning convex platform is inserted into locating slot, and positioning pin is inserted through knife handle hole and cutter head hole.
In addition, the present invention provides a kind of preparation method of detachable reversed rose reamer, comprising the following steps: knife handle preparation,
High-speed steel is prepared into the polished rod of predetermined size, screw thread is processed on polished rod；After knife handle is heat-treated, surface burnishing part
Reason is coated with rust-proof coating；High-speed steel is prepared into the cutter head based on frustroconical, and frustroconical by cutter head preparation
Side process cutting edge, process screw thread on head body, cutter head screw thread and knife handle screw thread match；It is carried out in cutter head in knife handle
After heat treatment, surface grinding process is coated with rust-proof coating.
Further, the present invention provides a kind of preparation method of detachable reversed rose reamer, can also have the following features:
Screw thread process is using thread grinding or tapping and mantle fiber mode.
In addition, the present invention also provides a kind of preparation methods of detachable reversed rose reamer, comprising the following steps: knife handle system
It is standby, high-speed steel is prepared into the polished rod of predetermined size, locating slot is processed in one end of polished rod, knife handle is laterally processed on locating slot
Hole；After knife handle is heat-treated, surface grinding process is coated with rust-proof coating；Cutter head preparation, is prepared into truncation for high-speed steel
Cutter head based on cone, the positioning convex platform that the top preparation of frustroconical matches with locating slot are horizontal on positioning convex platform
To processing cutter head hole；After cutter head is heat-treated, surface grinding process is coated with rust-proof coating；Positioning pin preparation, surface are thick
Machine-shaping, after positioning pin heat treatment, surface grinding process.
Further, the present invention provides a kind of preparation method of detachable reversed rose reamer, can also have the following features:
Heat treatment includes the following steps, anneals, and workpiece is heated to 870-880 DEG C, keeps the temperature 4 hours；Quickly cooling is protected to 740-750 DEG C
Temperature 6 hours, be furnace-cooled to 500-550 DEG C come out of the stove it is air-cooled；Quenching, 450-500 DEG C of degree preheatings, heating coefficient are 2-3 minutes/milli
Rice；Straight 800-850 degree DEG C salt bath furnace preheating is risen after heat preservation, heating coefficient is 8-15 seconds/millimeter；It heats, heats in 1280 DEG C
Coefficient is 8-15 seconds/millimeters；Workpiece after heating and thermal insulation, in direct quenching machine oil；Tempering, tempering temperature are 560 ± 10 DEG C,
Keep the temperature 1 hour times of tempering three times.
Advantageous effect of the invention
The present invention provides a kind of detachable reversed rose reamer, knife handle and cutter head various combination mode, can be maximum
The reversed chamfer machining of inner hole for meeting different parts, reaches outstanding quality level.Manufacture process of the invention is very simple
Easily, total quality is stable and technological operation is simple and efficient, and thus greatly reduces the production cost of the reversed cutter of inner hole；For not
For the through-hole parts of isospace surplus, the use of the reversed rose reamer of the novel dismountable may insure that the quality level of chamfering reaches
To technical level leading in the world.Simple based on detachable reversed chamfer processing method and device structure simultaneously, production cost is very low, quality
Level is high and is easily assembled, adjusts, the features such as, any manufacturing industry production process can be widely used in.
The present invention provides a kind of detachable reversed rose reamer, overcomes the processing limitation of the reversed rose reamer of existing integral type,
It technically gives and makes up, substantially reduce cutter manufacture and purchase cost, while also improving processing efficiency, be entirely capable of replacing artificial 2
The operation of secondary common scraper, thoroughly solves due to unreasonable operation by hand and bring inside parts chamfering is uneven, burr is residual
It stays, internal scratch etc. different degrees of mass defect；It further solves to produce high purchase cost waste, quality level is low
Under, the phenomenon that product rejection rate is high, and process velocity is slow, low efficiency.
The present invention provides a kind of detachable reversed rose reamer, and the bore periphery chamfering of inner cavity of component is uniform, impulse- free robustness residual,
It interpenetrates, will not be blocked or take out of during gas or liquid motion to remain influences more high precision components in turn.It is right
In manually chamfering finish about in Ra6.4, the chamfering surface roughness that detachable rose reamer processes can achieve
Ra0.6 sealed horizontal；The reversed chamfering of novel dismountable carrys out the workpiece in 10 holes in inner cavity to production efficiency is greatly improved
It says, can be completed in 10min~15min, and artificial scraper needs 30min~40min；Manufacture and purchase cost are saved, generally
The reversed rose reamer cost of integral type is in 200CNY or so, but the cost of novel dismountable rose reamer about 70CNY, save the cost 70%
Left and right；Cutter arrangement structure is simple, and easily fabricated, assembly and adjustment, production cost are low；It is easy to operate.Simply it can fix and tear open
It unloads, product first-time qualification rate 100%；Bit replacing is quick, shank portion may be reused, and reduces whole loss from spoilage.
Detailed description of the invention
Fig. 1 is the structure chart of the detachable reversed rose reamer of knife handle locking type of embodiment one.
Fig. 2 is the processing dimension figure of the detachable reversed rose reamer of knife handle locking type of embodiment one.
Fig. 3 is the machining state figure of the detachable reversed rose reamer of knife handle locking type of embodiment one.
Fig. 4 is the structure chart of the detachable reversed rose reamer of cutter head locking type of embodiment two.
Fig. 5 is the detachable reversed rose reamer structure chart of bolt fixing type of embodiment three.
Specific embodiment
The present invention will be further described in the following with reference to the drawings and specific embodiments.
Embodiment one
Fig. 1 is the structure chart of the detachable reversed rose reamer of knife handle locking type.
As shown in Figure 1, the detachable reversed rose reamer of knife handle locking type, comprising: knife handle 110 and cutter head 120.Knife handle 110 wraps
It includes: shank 111 and external screw thread 112.External screw thread 112 is in the bottom of shank 111, and the outer diameter of external screw thread 112 is less than shank 111
Outer diameter.Cutter head 120 is made of cutting ontology 121 and dismounting boss 123.Cutting ontology 121 is frustroconical.Frustroconical
Top diameter of a circle it is identical as the diameter of shank 111.The upper end of frustroconical has internal screw thread 122, the outer spiral shell with knife handle 110
Line 112 matches.The side of frustroconical has cutting edge.Dismounting boss 123 be regular polygon, preferably equilateral triangle,
Positive square, pentagon and equilateral hexagon, four kinds of shapes.It dismounts boss 123 and is generally not less than 2mm, facilitate cutter head regular worker
The quick of holding tool consolidates and locks, and improves the disassembly efficiency of cutter head.
The internal screw thread 122 of cutter head 120 is engaged with the external screw thread 112 of knife handle 110, realizes the company of knife handle 110 and cutter head 120
It connects.It is especially noted that the screw thread tightening direction and cutting stress direction of knife handle 110 and cutter head 120 are in the same direction.Work as cutter head
120 when carrying out chamfer machining, and cutter head 120 will receive the effect of power, can drive cutter head 120 rotate, as long as this power with tighten
Direction is consistent.So cutter head 120 and knife handle 110 use positive/negative thread, it is only necessary to when adjusting chamfering, the rotation of main shaft
Turn direction.
The preparation method of the detachable reversed rose reamer of knife handle locking type:
Fig. 2 is the processing dimension figure of the detachable reversed rose reamer of knife handle locking type of embodiment one.
As shown in Fig. 2, in the present embodiment, a kind of knife handle locking type detachably reversed rose reamer, knife handle light pillar portion are made
Outer diameter H be 10mm, knife handle screw thread M8 closely-pitched, cutter head width W15mm, 90 ° of apex angle, surface hardness HRC65.
The preparation step of knife handle:
Step 1: material selection.
65Mn, high-speed steel HSS generally may be selected in decorrelation knife handle；Convenient for Post isothermal treatment reach high performance toughness,
Wearability, high rigidity.Select the bar of diameter about 14~15mm diameter.
Step 2: roughing.
Roughing shank portion is to outer diameter 10.8mm；According to the thread size table of comparisons reserve stud size 4.5mm (screw thread
Outer diameter is smaller, and the processing of thread is more difficult, and fastness is weaker).
Threaded portion generally takes two ways to be processed: the knife handle that hardens is processed in 1. thread grindings-on screw grinder
Screw thread, single line wheel grinding mode carry out, and precision is higher.The screw thread of its processing difficulties degree and different model has direct relation,
This method is suitble to small lot；2. tapping and mantle fiber-, which are screwed in screw tap on workpiece with certain torque, processes internal screw thread in bottom outlet,
Externally threaded mode is cut out on bar (or materials in the tube) workpiece with screw die simultaneously, processing is easier, and is manually operable, but precision
It is not high.The quantity of knife handle screw thread, the effective thread of standard is not less than 4 teeth.
In the present embodiment, screw tap is screwed on cutter head with 20Nm torque and is processed in bottom outlet by cutter head tapping and knife handle mantle fiber-
M8 internal screw thread, while M8 external screw thread is cut out on knife handle with screw die, processing is easier, and is manually operable.
Step 3: heat treatment.
Annealing: by workpiece cushioning to 870-880 DEG C, 4 hours are kept the temperature, quickly cooling (is cooled to turning for C curve to 740-750 DEG C
Crook) heat preservation 6 hours, make Isothermal Decomposition of Austenite, be furnace-cooled to 500-550 DEG C come out of the stove it is air-cooled.
Quenching: 450-500 DEG C of degree preheatings generally preheat coefficient 2-3 minutes/millimeter；Straight 800-850 degree DEG C is risen after heat preservation
Salt bath furnace preheating generally takes coefficient 8-15 seconds/millimeter of preheating；Heated in 1280 DEG C of high-temperature salt furnace, heating coefficient be 8-15 seconds/
Millimeter；Workpiece after heating and thermal insulation in direct quenching machine oil, obtains hardness HRC63 or so after quenching, tissue be M+ carbide+
Retained austenite.
Tempering: tempering temperature is 560 ± 10 DEG C, keeps the temperature 1 hour times of tempering three times.Retained austenite about surplus 1-3% is left
The right side, hardness are HRC65 or so.
Step 4: finishing.
Surface grinding process: knife handle fine grinding cylinder, size 10+/- 0.01mm.
Step 5: surface coated treatment.
The good refractory metal cubic boron nitride of one layer of wearability is coated using vapor deposition method.The coating is changed as one
Barrier and thermodynamic barrier are learned, the diffusion and chemical reaction between cutter and workpiece are reduced, to reduce crescent abrasion.Knife simultaneously
Head has that surface hardness is high, wearability is good, the small characteristics such as low with thermal conductivity of stable chemical performance, heat-resistant oxidized, friction factor,
3~5 times high than non-coated tool service life or more when cutting, cutting speed improves 20%~70%, and machining accuracy improves
0.5~1 grade, cutter consumption costs reduces by 20%~50%.
Step 6: capability and performance is examined.
The parameters such as hardness, apex angle, surface roughness, the outer diameter of knife handle are tested comparison and record.
The preparation step of cutter head:
Step 1: material selection.
65Mn, high-speed steel HSS generally may be selected in decorrelation knife handle；Convenient for Post isothermal treatment reach high performance toughness,
Wearability, high rigidity.Select the bar of diameter about 19~20mm diameter.
Step 2: roughing.
Roughing cutter head processes frustroconical and dismounting projection section, the bottom circular diameter of frustroconical to 15.8mm；
Simultaneous processing knife edge part.Screw hole dimensions 4.5mm is reserved according to the thread size table of comparisons.Screw thread is ground at the top of frustroconical
Internal screw thread out.
Step 3: heat treatment.It is identical as shank portion, it can be handled simultaneously with the knife handle that roughing is completed.
Step 4: finishing.
Bit interface grinding process: the fine grinding of cutter head blade, 90 degree of apex angle；Cutter head width dimensions 15+/- 0.01mm.
The surface coated treatment of step 5 and the capability and performance of step 6 are examined identical as knife handle step.
The chamfering method of the detachable reversed rose reamer of knife handle locking type:
Fig. 3 is the machining state figure of the detachable reversed rose reamer of knife handle locking type of embodiment one.
As shown in figure 3, the knife handle 110 of the detachable reversed rose reamer of knife handle locking type it is top-down enter need to process
In the hole at angle, cutter head 120 enters inner cavity from the transverse holes of left or right side.Cutter head 120 is screwed into knife handle 110 by dismounting boss
Interior, i.e. rotatable knife handle carries out chamfer machining to the inner hole.
Embodiment two
Fig. 4 is the structure chart of the detachable reversed rose reamer of cutter head locking type.
As shown in figure 4, detachably reversed rose reamer includes: knife handle 210 and cutter head 220 to cutter head locking type.Knife handle 110 wraps
It includes: shank 211 and internal screw thread 212.Internal screw thread 212 is in the bottom of shank 211.Cutter head 220 is convex by cutting ontology 221 and screw thread
Platform 222 is constituted.Cutting ontology 221 is frustroconical.The top diameter of a circle of frustroconical is identical as the diameter of shank 211.
Screw boss 222 has external screw thread 222, matches with the internal screw thread 212 of knife handle 210.The side of frustroconical has cutting edge.
The bottom of frustroconical has dismounting card slot, preferably four kinds of "-" type, cross, hexangle type and blossom type shapes.Dismounting
Card slot is generally not less than 2mm, facilitates the quick firm of cutter head fixing tool tool and locks, improves the disassembly efficiency of cutter head.
Detachably the processing method of reversed rose reamer is similar to embodiment one for cutter head locking type, and distinctive points are: cutter head and
The internal and external threads of knife handle, which configure, to be exchanged.The dismounting boss of 220 bottom of cutter head is set as dismounting card slot, can effectively reduce cutter head
Whole height H.
In addition, the chamfering method of the detachable reversed rose reamer of cutter head locking type is also the same as example 1, it is not repeated
Narration.
Embodiment three
Fig. 5 is the detachable reversed rose reamer structure chart of bolt fixing type of embodiment three.
As shown in figure 5, bolt fixing type detachably reversed rose reamer include: include: that knife handle 310, cutter head 320 and two are fixed
Position pin 330.
The bottom of the shank 311 of knife handle 310 has locating slot 312.Locating slot 312 has two lateral knife handle holes 313.
Cutter head 320 is made of cutting ontology 321 and positioning convex platform 322.Cutting ontology 121 is frustroconical.Have on positioning convex platform 322
There are two cutter head holes 323.The side of frustroconical has cutting edge.Locating slot 312 and positioning convex platform 322 match, knife handle hole
313, cutter head hole 325 and positioning pin 330 match.Knife handle hole 313, cutter head hole 325 unilateral wall thickness be typically no less than 1mm, it is maximum
The deflection that heat treatment process may cause is reduced in degree, shaking of the more stable cutter head in the course of work more is promoted
Processing quality.
Positioning convex platform 322 is inserted into locating slot 312, and positioning pin 330 is inserted through knife handle hole 313 and cutter head hole 325, is realized
Cutter head 320 is fixedly connected with knife handle 310.
Detachably the processing method of reversed rose reamer is similar to embodiment one for knife bolt fixing type, and distinctive points are: cutter head
Do not need processing screw thread with knife handle, increase dowel hole, i.e. the process in knife handle hole 313, cutter head hole 325, more convenient polishing and
Post-processing.330 customizable length of positioning pin or standardization.330 surface roughing of positioning pin, heat treatment salt bath reduce Surface Oxygen
Change, hardness is generally not less than HRC50, refines, and smoothness requirements are not higher than Ra1.6, improves service life and wearability.
In addition, the chamfering method of the detachable reversed rose reamer of knife bolt fixing type is also similar to embodiment one, difference is only
It is fixedly connected in knife handle with the use positioning pin of cutter head connection type.
It should be noted that dismounting boss 123 is intended merely to dismounting cutter head conveniently, and the necessary part of non-processing chamfering.?
Card slot 224 can also be dismounted in processing on dismounting boss 123 in embodiment one, the two can be arranged jointly, can only not set
Set one.Certainly, dismounting boss and/or dismounting card slot 224 also can be set on three kinds of embodiment of cutter head 320, facilitate behaviour
Make.
Claims (10)
1. a kind of detachable reversed rose reamer, it is characterised in that: including knife handle and cutter head；
Wherein, the cutter head is detachably connected with the knife handle；
The cutting ontology of the cutter head is frustroconical；
The basal diameter of the frustroconical is greater than chamfering bore dia；The top surface diameter of the frustroconical is less than chamfered bore
Diameter.
2. detachable reversed rose reamer as described in claim 1, it is characterised in that:
Wherein, there is the screw thread to match, the knife handle and the cutter head to be engaged by screw thread and connect for the knife handle and the cutter head.
3. detachable reversed rose reamer as claimed in claim 2, it is characterised in that:
Wherein, the screw thread tightening direction and cutting stress direction of the knife handle and the cutter head are in the same direction.
4. detachable reversed rose reamer as claimed in claim 2, it is characterised in that:
Wherein, the bottom surface of the frustroconical has dismounting boss；
Preferably, the shape of the dismounting boss is regular polygon；
Preferably, the height of the dismounting boss is not less than 2 millimeters.
5. detachable reversed rose reamer as claimed in claim 2, it is characterised in that:
Wherein, the bottom of the cutter head has dismounting card slot；
Preferably, the shape of the dismounting card slot is "-" type or cross or hexangle type or blossom type；
Preferably, the depth of the dismounting card slot is not less than 2 millimeters.
6. detachable reversed rose reamer as described in claim 1, it is characterised in that:
It further include at least one positioning pin；
The top of the frustroconical has positioning convex platform；The positioning convex platform has the cutter head to match with the positioning pin
Hole；The cutter head hole extends transversely through the positioning convex platform；
The bottom of the knife handle has locating slot；The locating slot has the knife handle hole to match with the positioning pin；The knife handle
Hole extends transversely through the locating slot；
The positioning convex platform is inserted into the locating slot, and the positioning pin is inserted through the knife handle hole and the cutter head hole.
7. the preparation method of detachable reversed rose reamer as claimed in claim 2, it is characterised in that: include the following steps,
High-speed steel, is prepared into the polished rod of predetermined size, screw thread is processed on polished rod by knife handle preparation；It is heat-treated in knife handle
Afterwards, surface grinding process is coated with rust-proof coating；
High-speed steel is prepared into the cutter head based on frustroconical by cutter head preparation, and the side of frustroconical processes cutting
Sword, processes screw thread on head body, and cutter head screw thread and knife handle screw thread match；In cutter head after knife handle is heat-treated, surface
Grinding process is coated with rust-proof coating.
8. the preparation method of detachable reversed rose reamer as claimed in claim 7, it is characterised in that: screw thread process uses screw thread
Grinding or tapping and mantle fiber mode.
9. the preparation method of detachable reversed rose reamer as claimed in claim 6, it is characterised in that: include the following steps,
High-speed steel, is prepared into the polished rod of predetermined size by knife handle preparation, processes locating slot in one end of polished rod, horizontal on locating slot
To processing knife handle hole；After knife handle is heat-treated, surface grinding process is coated with rust-proof coating；
High-speed steel is prepared into the cutter head based on frustroconical, the top preparation and positioning of frustroconical by cutter head preparation
The positioning convex platform that slot matches, laterally processes cutter head hole on positioning convex platform；After cutter head is heat-treated, surface grinding process,
It is coated with rust-proof coating；
Positioning pin preparation, surface roughing molding, after positioning pin heat treatment, surface grinding process.
10. the preparation method of detachable reversed rose reamer according to claim 7 or 9, it is characterised in that: heat treatment includes
Following steps,
Workpiece is heated to 870-880 DEG C, keeps the temperature 4 hours by annealing；Quickly cooling keeps the temperature 6 hours, with being furnace-cooled to 740-750 DEG C
500-550 DEG C come out of the stove it is air-cooled；
Quenching, 450-500 DEG C of degree preheatings, heating coefficient is 2-3 minutes/millimeter；Straight 800-850 degree DEG C salt bath furnace is risen after heat preservation
Preheating, heating coefficient are 8-15 seconds/millimeter；It is heated in 1280 DEG C, heating coefficient is 8-15 seconds/millimeters；After heating and thermal insulation
Workpiece, in direct quenching machine oil；
Tempering, tempering temperature are 560 ± 10 DEG C, keep the temperature 1 hour times of tempering three times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710930431.1A CN109623034A (en) | 2017-10-09 | 2017-10-09 | Detachable reversed rose reamer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710930431.1A CN109623034A (en) | 2017-10-09 | 2017-10-09 | Detachable reversed rose reamer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109623034A true CN109623034A (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710930431.1A Pending CN109623034A (en) | 2017-10-09 | 2017-10-09 | Detachable reversed rose reamer and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112355580A (en) * | 2020-10-29 | 2021-02-12 | 中国航发南方工业有限公司 | Burr removing process for high-temperature alloy case |
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| CN112355580A (en) * | 2020-10-29 | 2021-02-12 | 中国航发南方工业有限公司 | Burr removing process for high-temperature alloy case |
| CN112355580B (en) * | 2020-10-29 | 2021-11-02 | 中国航发南方工业有限公司 | Burr removing process for high-temperature alloy case |
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