CN108723980A - For the mill of precision deep bore processing and the grinding method of precision deep bore - Google Patents
For the mill of precision deep bore processing and the grinding method of precision deep bore Download PDFInfo
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- CN108723980A CN108723980A CN201810507041.8A CN201810507041A CN108723980A CN 108723980 A CN108723980 A CN 108723980A CN 201810507041 A CN201810507041 A CN 201810507041A CN 108723980 A CN108723980 A CN 108723980A
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- grinding
- deep hole
- plug
- deep
- mill
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/02—Lapping machines or devices; Accessories designed for working surfaces of revolution
Abstract
The invention discloses a kind of mill for precision deep bore processing and the grinding methods of precision deep bore.Mill for precision deep bore processing, the precision machined grinding plug of deep hole is carried out in deep hole including being used to stretch to, it is placed on the processing end of grinding plug for carrying out precision machined grinding sleeve to inner walls of deep holes face and being fixedly arranged on the mounting base being installed on attrition process bed in the assembly side of grinding plug for plug will to be ground, it is radial dimension diminishing variable cross-section barred body structure from one end to the other end to grind plug, mounting base is fixedly arranged on the bigger diameter end of grinding plug, grinding sleeve elastic hoop is in the miner diameter end of grinding plug, the radial lapping diameter of mill is adjusted by the flexible deformation adaptability of grinding sleeve to meet the Precision Machining requirement of inner walls of deep holes face.The mill for precision deep bore processing of the present invention, the adjusting synchronized by the variation according to deep hole aperture in process of lapping, machining accuracy and surface roughness to ensure deep hole meet the requirements.
Description
Technical field
The present invention relates to milling tool technical fields, particularly, be related to it is a kind of for precision deep bore processing mill and
The grinding method of precision deep bore.
Background technology
In mechanical manufacturing field, it is often necessary to be required the endoporus of some vital parts very stringent grinding and throwing
Light.Especially for the deep hole for needing processing aspect ratio to be more than 10 in aviation part, the surface roughness requirements 0.2 of this kind of part
Between μm -0.8 μm, cylindricity requires to be less than 0.005mm, some even require higher.Due to this kind of high-precision elongated hole part
It when using general internal grinder processing, is limited by geometric dimension, the range of choice of bistrique is narrow, can not ensure that part is processed
Precision.
In the prior art, processing is ground using grinding plug at present, there are two kinds in process of lapping to need replacing
The case where grinding plug：The first situation is that grinding plug is worn in process of lapping and causes diameter to become smaller can not to continue to grind
Mill, and frayed grinding plug can not process the deep hole of multiple same apertures；The second situation is deep hole in process of lapping
In, deep hole inner surface surplus is reduced, and aperture, which can gradually amplify, leads to grind plug and deep hole mismatch, then needs to change larger diameter
Grinding plug to ensure that deep hole matches with grinding plug and reaches grinding effect；The third situation is grinding plug ground
Being worn rear diameter in journey and becoming smaller leads to grind plug and deep hole and mismatches, then needs to change the grinding plug of larger diameter with true
Guarantor's deep hole matches with grinding plug reaches grinding effect.Since the requirement of the cylindricity and surface roughness of precision deep bore is high,
Therefore it needs to make the grinding plug of multigroup different size, and be needed to frequently replace in process of lapping, Meteorological is big
Working hour is also expended simultaneously, processing efficiency is low.And due to the rough machined error of deep hole, there are difference in the aperture of deep hole, therefore
It is also required to be equipped with the grinding plug of different-diameter.
Invention content
The present invention provides a kind of mill for precision deep bore processing and the grinding methods of precision deep bore, with solution
The technical issues of certainly existing deep hole lapping efficiency is low, bad adaptability.
According to an aspect of the present invention, a kind of mill for precision deep bore processing is provided, including is used to stretch to
The precision machined grinding plug of deep hole is carried out in deep hole, is placed on the processing end of grinding plug for carrying out essence to inner walls of deep holes face
The grinding sleeve of close processing and being fixedly arranged in the assembly side of grinding plug is installed on attrition process bed for will grind plug
Mounting base, grinding plug are that diminishing variable cross-section barred body structure, mounting base are fixedly arranged on radial dimension from one end to the other end
The bigger diameter end of plug is ground, grinding sleeve elastic hoop passes through the flexible deformation adaptability of grinding sleeve in the miner diameter end of grinding plug
The radial lapping diameter of mill is adjusted to meet the Precision Machining requirement of inner walls of deep holes face.
Further, be provided with gap on grinding sleeve in the axial direction, grinding sleeve be placed on grinding plug by gap to
Outer expansion makes the lapping diameter of mill become larger.
Further, the diameter of grinding plug miner diameter end is equal with the internal diameter of unexpanded grinding sleeve.
Further, the width in gap requires setting according to the design aperture of deep hole and cylindricity.
Further, the taper for grinding plug requires to set according to the design length of deep hole, aperture and cylindricity.
Further, it grinds and is equipped with guide frame between plug and grinding sleeve in an axial direction, guide frame is for limiting grinding
It is sleeved on and is rotated on grinding plug and grinding sleeve is guided to be moved along the axis direction of grinding plug to realize the lapping diameter of mill
Adaptability adjust.
According to another aspect of the present invention, a kind of grinding method of precision deep bore is also provided, using above-mentioned for essence
The mill of close deep hole machining, includes the following steps：It is installed on attrition process bed by mounting base by plug is ground；According to depth
The aperture in hole selects the first grinding sleeve；By the first grinding sleeve from grinding plug miner diameter end be inserted in and by the first abrasive pastes fill to
In gap；First grinding sleeve is stretched into deep hole and according to the aperture of deep hole by pressing the adjustment of the first grinding sleeve to grind on hold-down mechanism
The lapping diameter of grinder with deep hole to match；Attrition process bed drives mill high speed rotation to be ground to deep hole, leads to
The lapping diameter for pressing the first grinding sleeve to adjust mill is crossed on hold-down mechanism to adapt to varying aperture of the deep hole in process of lapping；
It completes to grind and stop rotating by the first grinding sleeve.
Further, further comprising the steps of after completing grinding to deep hole by the first grinding sleeve：First grinding is extracted
The second grinding lower and that outer diameter is more than to the first grinding sleeve is inserted in from the miner diameter end of grinding plug；Granularity is less than the first abrasive pastes
The second abrasive pastes be positioned in gap；Second grinding sleeve is stretched into deep hole and is passed through on hold-down mechanism according to the aperture of deep hole
The lapping diameter of the second grinding sleeve adjustment mill is pressed to match with deep hole；Attrition process bed drives mill high speed rotation to depth
Hole is ground, by pressing the second grinding sleeve to adjust the lapping diameter of mill to adapt to deep hole in process of lapping on hold-down mechanism
In varying aperture；It completes to grind and stop rotating by the second grinding sleeve.
Further, further comprising the steps of after having been ground by the second grinding sleeve：Examine aperture, the cylinder of deep hole
Whether degree, surface roughness are qualified.
Further, if the effective aperture of deep hole is less than design aperture, by replacing grinding sleeve to increase grinding for mill
Mill diameter is ground deep hole, until qualified；If the surface roughness of deep hole is higher than the surface roughness required by deep hole, lead to
It crosses and deep hole is ground to reduce the surface roughness of deep hole until qualified again using the smaller abrasive pastes of granularity.
The invention has the advantages that：
The mill for precision deep bore processing of the present invention, it is diminishing from one end to the other end using radial dimension
Grinding sleeve is inserted in grinding plug not by the grinding plug of variable cross-section and the flexible deformation of grinding sleeve from the miner diameter end of grinding plug
With on position, making mill that there is different lapping diameters, to match the deep hole of different pore size, and deep hole is adapted to ground
The case where aperture becomes larger in journey, the adjusting synchronized by the variation according to deep hole aperture in process of lapping, to
The machining accuracy and surface roughness for ensureing deep hole meet the requirements.It is ground without preparing the grinding plug of multigroup different size
Plug is ground without frequently replacing in journey, therefore has saved working hour.Grinding plug frayed simultaneously can still be increased by grinding sleeve
It is reused after big lapping diameter.
The grinding method of the precision deep bore of the present invention, by installing the above-mentioned mill for precision deep bore processing
In being ground processing to deep hole on attrition process bed, the first abrasive pastes are positioned in gap before the milling, when the first grinding
Uniformly the outer surface coated on the first grinding sleeve is ground the inner surface of deep hole to abrasive pastes after set high speed rotation, is not necessarily to
Abrasive pastes are added in process of lapping；First grinding sleeve is stretched into elastically deformable in deep hole before being ground through hold-down mechanism
The first grinding sleeve be placed on grinding plug different location at so that the lapping diameter of mill and the aperture of deep hole is matched；It is grinding
Change the position of grinding sleeve, the adjusting synchronized, to protect during mill by hold-down mechanism according to the variation in deep hole aperture
The machining accuracy and surface roughness for demonstrate,proving deep hole meet the requirements.Without preparing the grinding plug of multigroup different size, process of lapping
In without frequently replacing grind plug, therefore saved working hour.
Other than objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is described in further detail.
Description of the drawings
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the assembled state figure of the mill for precision deep bore processing of the preferred embodiment of the present invention；
Fig. 2 is the assembled state figure of the mill for precision deep bore processing of the preferred embodiment of the present invention.
Marginal data：
1, mounting base；2, plug is ground；3, grinding sleeve；4, gap.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited by following and
The multitude of different ways of covering is implemented.
Fig. 1 is the assembled state figure of the mill for precision deep bore processing of the preferred embodiment of the present invention；Fig. 2 is this hair
The assembled state figure of the mill for precision deep bore processing of bright preferred embodiment.
As shown in Figs. 1-2, the present embodiment for precision deep bore processing mill, including be used to stretch in deep hole into
The precision machined grinding plug 2 of row deep hole is placed on the processing end of grinding plug 2 for carrying out Precision Machining to inner walls of deep holes face
Grinding sleeve 3 and be fixedly arranged in the assembly side of grinding plug 2 for the installation that plug 2 is installed on attrition process bed will to be ground
Seat 1, grinding plug 2 are radial dimension diminishing variable cross-section barred body structure from one end to the other end, and mounting base 1, which is fixedly arranged on, grinds
The bigger diameter end of core grinding stick 2,3 elastic hoop of grinding sleeve are adapted in the miner diameter end of grinding plug 2 by the flexible deformation of grinding sleeve 3
Property adjust the radial lapping diameter of mill to meet the requirement of inner walls of deep holes face Precision Machining.Grinding sleeve 3 is hard alloy or casting
Iron is made.It is preferred that grey cast-iron, graphitiferous in grey cast-iron, therefore wearability and lubricity are preferable, reduce grinding sleeve 3 and are grinding
The abrasion being subject in the process.The mill for precision deep bore processing of the present invention, from one end to the other end using radial dimension
Path end cap of the flexible deformation for grinding plug 2 and grinding sleeve 3 of diminishing variable cross-section by grinding sleeve 3 from grinding plug 2
On the different location for entering to grind plug 2, make mill that there is different lapping diameters, to match the deep hole of different pore size, and
Deep hole the case where aperture becomes larger in process of lapping is adapted to, by being carried out according to the variation in deep hole aperture in process of lapping
Synchronous adjusting, machining accuracy and surface roughness to ensure deep hole meet the requirements.Without preparing multigroup different size
Plug 2 is ground, is not necessarily to frequently replace in process of lapping and grinds plug 2, therefore saved working hour.Grinding plug frayed simultaneously
2 still can be by reusing after the increase lapping diameter of grinding sleeve 3.
It is provided with gap 4 on grinding sleeve 3 in the axial direction, grinding sleeve 3 is placed on grinding plug 2 through gap 4 to extending out
Opening makes the lapping diameter of mill become larger.The width in gap 4 requires setting according to the design aperture of deep hole and cylindricity.Grinding sleeve
3 by gap 4 with realize its own elasticity so that grinding sleeve 3 can grinding plug 2 on carry out adaptability sliding to be ground
The radial dimension of adaptability of grinder is adjusted；By filling abrasive pastes in gap 4, in order to which grinding sleeve 3 is to carrying out essence in deep hole
Close processing.Optionally, gap 4 is the clearance groove extended radially through through gap, or connected by elastic membrane for bottom.Gap 4
Can be linear type, waveform, zigzag or other shapes.It is preferred that linear run through gap, processing is simple, and gap is along axis
The degrees of expansion of the equivalent width in direction, grinding sleeve 3 is consistent, to which diameter in the axial direction is consistent after so that grinding sleeve 3 is expanded.
If the aperture after deep hole roughing differs bigger with the design aperture of deep hole, i.e. initial aperture of the deep hole in process of lapping and most
Whole aperture difference is bigger, then the width in gap 4 is bigger accordingly, but must assure that the maximum that grinding sleeve 3 is placed on grinding plug 2
The difference of lapping diameter and minimum lapping diameter is greater than or equal to the difference of maximum diameter of hole and minimum-value aperture of the deep hole in process of lapping,
To ensure that the flexible deformation in process of lapping by grinding sleeve 3 adapts to the variation in deep hole aperture.It also needs guarantee grinding sleeve 3 to be placed on to grind
The minimum lapping diameter of core grinding stick 2 is less than the initial aperture of deep hole, and maximum lapping diameter is more than the final aperture of deep hole.
The diameter for grinding 2 miner diameter end of plug is equal with the unexpanded internal diameter of grinding sleeve 3.Grinding sleeve 3 is firmly placed on
It grinds on plug 2, the spacing in the lower end inner wall face and grinding plug 2 that avoid grinding sleeve 3 is larger to lead to grinding sleeve 3 in process of lapping
Shifting influences the machining accuracy of deep hole.If the diameter for grinding 2 miner diameter end of plug is more than the most imperial palace after grinding sleeve 3 is expanded
Diameter, then grinding sleeve 3 can not elastic cuffs in grinding plug 2 on.If the miner diameter end for grinding plug 2 is more than unexpanded grinding sleeve 3
Internal diameter and the maximum inner diameter after being expanded less than grinding sleeve 3, then grinding sleeve 3 be not easy set on grinding plug 2, and in process of lapping
Middle adjusting operation is relatively difficult, while also reducing the adjustable range of mill lapping diameter.If the miner diameter end for grinding plug 2 is small
In the internal diameter of unexpanded grinding sleeve 3, grinding sleeve 3 gradually moves up internal diameter and becomes larger and in the lower end of grinding sleeve 3 in process of lapping
The spacing of wall surface and grinding plug 2 is increasing to be susceptible to offset, influences the machining accuracy of deep hole.
The taper for grinding plug 2 requires to set according to the design length of deep hole, aperture and cylindricity.The design length of deep hole
Longer, the aspect ratio of the smaller i.e. deep hole in aperture is bigger, and corresponding cylindricity requirement is higher, then the taper for grinding plug 2 is smaller.
It grinds and is equipped with guide frame between plug 2 and grinding sleeve 3 in an axial direction, guide frame is being ground for limiting grinding sleeve 3
It is rotated on core grinding stick 2 and grinding sleeve 3 is guided to move the suitable of lapping diameter to realize mill along the axis direction of grinding plug 2
Answering property is adjusted.Guide frame is set on the groove of 3 internal face of grinding sleeve and set on 2 surface of grinding plug and groove match
Raised line, or the groove with groove match set on the raised line of 3 internal face of grinding sleeve and set on 2 surface of grinding plug.It uses
When, grinding sleeve 3 is placed on grinding plug 2, is connected with matching grooves by raised line, it is ensured that grinding sleeve 3 is along axis in process of lapping
It moves to change the lapping diameter of mill in direction.
The grinding method of the precision deep bore of the present embodiment, using the above-mentioned mill for precision deep bore processing, packet
Include following steps：It is installed on attrition process bed by mounting base 1 by plug 2 is ground；It is ground according to the aperture of deep hole selection first
Grinding set；First grinding sleeve is inserted in from the miner diameter end of grinding plug 2 and fills the first abrasive pastes to gap 4；First is ground
Grinding set stretches into deep hole and according to the aperture of deep hole by pressing the first grinding sleeve to adjust the lapping diameter of mill on hold-down mechanism
To match with deep hole；Attrition process bed drives mill high speed rotation to be ground to deep hole, by being pressed on hold-down mechanism
First grinding sleeve adjusts the lapping diameter of mill to adapt to varying aperture of the deep hole in process of lapping；Pass through the first grinding sleeve
It completes to grind and stop rotating.The grinding method of the precision deep bore of the present invention, by being processed above-mentioned for precision deep bore
Mill be installed on attrition process bed processing be ground to deep hole, the first abrasive pastes are positioned over gap 4 before the milling
It is interior, after the first grinding sleeve high speed rotation abrasive pastes uniformly the outer surface coated on the first grinding sleeve to the inner surface of deep hole into
Row grinding, without adding abrasive pastes in process of lapping；First grinding sleeve is stretched into deep hole before being ground and passes through compacting machine
First grinding sleeve of elastically deformable is placed on the lapping diameter and deep hole for making mill at the different location of grinding plug 2 by structure
Aperture matches；The position for changing the first grinding sleeve by hold-down mechanism according to the variation in deep hole aperture in process of lapping, into
The synchronous adjusting of row, machining accuracy and surface roughness to ensure deep hole meet the requirements.Without preparing multigroup different size
Grinding plug 2, grind plug 2 without frequently replacing in process of lapping, therefore saved working hour.
Hold-down mechanism is set to the lower section of deep hole.Before grinding, grinding sleeve 3 is placed on grinding plug 2 and stretches into deep hole, if grinding
Then grind lower face and deep hole that plug 2 drives the stretching deep hole of grinding sleeve 3 to make grinding sleeve 3 in the aperture that the diameter of set 3 is less than deep hole
The hold-down mechanism of lower section contacts, and after pressure grinding sleeve 3 makes the outer diameter of grinding sleeve 3 become larger on hold-down mechanism, grinds plug 2 and grinding sleeve
3 move up to be back in deep hole and start to grind.In process of lapping, when grinding plug 2 drives grinding sleeve 3 to be carried out in deep hole certain time
Just deep hole is stretched out after several reciprocating motions makes grinding sleeve 3 be contacted with the hold-down mechanism below deep hole, and grinding sleeve 3 is pressed on hold-down mechanism
After so that the outer diameter of grinding sleeve 3 is become larger, grinding plug 2, which moves up to be back in deep hole with grinding sleeve 3, to be continued to grind.Optionally, it is grinding
During mill, when deep hole inner surface surplus is reduced or grinding sleeve 3 is worn leads to outer surface and the interior table of deep hole of grinding sleeve 3
When the larger mismatch of the distance in face, the resistance that grinding sleeve 3 rotates reduces, and rotating speed becomes faster and just stretches out deep hole and depth when tending towards stability
Hold-down mechanism below hole contacts, and pressure grinding sleeve 3 is that the lapping diameter of mill becomes larger on hold-down mechanism.In the present embodiment,
Hold-down mechanism will press 0.1mm, the lapping diameter of mill to increase 0.001mm every time on grinding sleeve 3.
It is further comprising the steps of after completing grinding to deep hole by the first grinding sleeve：First grinding sleeve is removed and will be outer
The second grinding that diameter is more than the first grinding sleeve is inserted in from the miner diameter end of grinding plug 2；Granularity is less than the second of the first abrasive pastes
Abrasive pastes are positioned in gap 4；Second grinding sleeve is stretched into deep hole and according to the aperture of deep hole by pressing on hold-down mechanism
The lapping diameter of two grinding sleeves 3 adjustment mill matches with deep hole；Attrition process bed drives mill high speed rotation to deep hole
It is ground, by pressing the second grinding sleeve 3 to adjust the lapping diameter of mill to adapt to deep hole in process of lapping on hold-down mechanism
In varying aperture；It completes to grind and stop rotating by the second grinding sleeve 3.Wherein, the outer diameter of the second grinding sleeve is slightly larger than the
The outer diameter of one grinding sleeve 3 closes tighter when the second grinding sleeve is placed on to stretch into deep hole on grinding plug 2 with inner walls of deep holes face paste
It is close, and the second abrasive pastes using granularity less than the first abrasive pastes are ground the internal face of deep hole, to make deep hole
Surface roughness further decreases, it is ensured that the surface roughness after deep hole completion attrition process meets design requirement, further
Improve the machining accuracy of deep hole.
It is further comprising the steps of after having been ground by the second grinding sleeve：Examine aperture, cylindricity, the surface of deep hole thick
Whether rugosity is qualified.If the effective aperture of deep hole is less than design aperture, straight with the grinding for increasing mill by replacing grinding sleeve 3
Diameter is ground deep hole, until qualified；If the surface roughness of deep hole is higher than the surface roughness required by deep hole, by adopting
Deep hole is ground to reduce the surface roughness of deep hole until qualified again with the smaller abrasive pastes of granularity.If deep hole
Effective aperture is more than design aperture, then is adjusted to the machined parameters of follow-up deep hole attrition process.
It can be seen from the above description that the above embodiment of the present invention realizes following technique effect：
The mill for precision deep bore processing of the present invention, by using the flexible deformation of grinding sleeve by grinding sleeve from circle
The miner diameter end of the grinding plug of mesa-shaped is inserted on the different location of grinding plug, and mill is made to have different lapping diameters, with
The deep hole of different pore size is matched, and adapts to deep hole the case where aperture becomes larger in process of lapping, by process of lapping
The adjusting that the middle variation according to deep hole aperture synchronizes, machining accuracy and surface roughness to ensure deep hole conform to
It asks.It is not necessarily to frequently replace without preparing the grinding plug of multigroup different size, in process of lapping and grinds plug, therefore saved work
When.Grinding plug frayed simultaneously is reused after still can increasing lapping diameter by grinding sleeve.
The grinding method of the precision deep bore of the present invention, by installing the above-mentioned mill for precision deep bore processing
In being ground processing to deep hole on attrition process bed, the first abrasive pastes are positioned in gap before the milling, when the first grinding
Uniformly the outer surface coated on grinding sleeve is ground the inner surface of deep hole to the first abrasive pastes after set high speed rotation, is not necessarily to
Abrasive pastes are added in process of lapping；First grinding sleeve is stretched into elastically deformable in deep hole before being ground through hold-down mechanism
The first grinding sleeve be placed on grinding plug different location at so that the lapping diameter of mill and the aperture of deep hole is matched；It is grinding
According to the variation in deep hole aperture by the position of hold-down mechanism the first grinding sleeve of change during mill, the adjusting synchronized, from
And ensures the machining accuracy of deep hole and surface roughness and meet the requirements.Without preparing the grinding plug of multigroup different size, grind
It is not necessarily to frequently replace in the process to grind plug, therefore has saved working hour.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of mill for precision deep bore processing, including it is used to stretch to the progress precision machined grinding of deep hole in deep hole
Plug (2) is placed on the processing end of the grinding plug (2) for carrying out precision machined grinding sleeve (3) to inner walls of deep holes face
And it is fixedly arranged in the assembly side of the grinding plug (2) for the grinding plug (2) to be installed on attrition process bed
Mounting base (1),
It is characterized in that,
The grinding plug (2) is radial dimension diminishing variable cross-section barred body structure from one end to the other end, the installation
Seat (1) is fixedly arranged on the bigger diameter end of the grinding plug (2), and grinding sleeve (3) elastic hoop is small in the grinding plug (2)
Diameter end adjusts the radial lapping diameter of the mill to meet deep hole by the flexible deformation adaptability of the grinding sleeve (3)
The requirement of internal face Precision Machining.
2. the mill according to claim 1 for precision deep bore processing, which is characterized in that
Gap (4) is provided on the grinding sleeve (3) in the axial direction, the grinding sleeve (3), which is placed on the grinding plug (2), leads to
Crossing expanding outwardly for the gap (4) makes the lapping diameter of the mill become larger.
3. the mill according to claim 2 for precision deep bore processing, which is characterized in that
The diameter of described grinding plug (2) miner diameter end is equal with the unexpanded internal diameter of the grinding sleeve (3).
4. the mill according to claim 3 for precision deep bore processing, which is characterized in that
The width of the gap (4) requires setting according to the design aperture of deep hole and cylindricity.
5. the mill according to claim 4 for precision deep bore processing, which is characterized in that
The taper of the grinding plug (2) requires to set according to the design length of deep hole, aperture and cylindricity.
6. the mill according to claim 4 for precision deep bore processing, which is characterized in that
Guide frame is equipped between the grinding plug (2) and the grinding sleeve (3) in an axial direction, the guide frame is for limiting
The grinding sleeve (3) rotates on the grinding plug (2) and guides the grinding sleeve (3) along the axis of the grinding plug (2)
The movement of line direction is to realize that the adaptability of the lapping diameter of the mill is adjusted.
It is any described for precision deep bore processing using claim 2-6 7. a kind of grinding method of precision deep bore
Mill, which is characterized in that include the following steps：
Plug (2) will be ground by mounting base (1) to be installed on attrition process bed；
The first grinding sleeve is selected according to the aperture of deep hole；
First grinding sleeve is inserted in from the miner diameter end of grinding plug (2) and fills the first abrasive pastes in gap (4)；
First grinding sleeve is stretched into deep hole and according to the aperture of deep hole by pressing the adjustment grinding of the first grinding sleeve on hold-down mechanism
The lapping diameter of device with deep hole to match；
Attrition process bed drives mill high speed rotation to be ground to deep hole, by pressing the first grinding sleeve tune on hold-down mechanism
The lapping diameter of whole mill is to adapt to varying aperture of the deep hole in process of lapping；
It completes to grind and stop rotating by the first grinding sleeve.
8. the grinding method of precision deep bore according to claim 7, which is characterized in that by the first grinding sleeve to depth
It is further comprising the steps of after grinding is completed in hole：
First grinding sleeve is removed and outer diameter is more than the second grinding of the first grinding sleeve from the path end cap of grinding plug (2)
Enter；
The second abrasive pastes that granularity is less than to the first abrasive pastes are positioned in gap (4)；
Second grinding sleeve is stretched into deep hole and according to the aperture of deep hole by pressing the adjustment grinding of the second grinding sleeve on hold-down mechanism
The lapping diameter of device matches with deep hole；
Attrition process bed drives mill high speed rotation to be ground deep hole, by pressing the second grinding sleeve to adjust on hold-down mechanism
The lapping diameter of mill is to adapt to varying aperture of the deep hole in process of lapping；
It completes to grind and stop rotating by the second grinding sleeve.
9. the grinding method of precision deep bore according to claim 8, which is characterized in that ground by the second grinding sleeve
It is further comprising the steps of after complete：
Whether the aperture of inspection deep hole, cylindricity, surface roughness are qualified.
10. the grinding method of precision deep bore according to claim 9, which is characterized in that
If the effective aperture of deep hole is less than design aperture, by replacing grinding sleeve (3) to increase the lapping diameter of mill to depth
Hole is ground, until qualified；
If the surface roughness of deep hole is higher than the surface roughness required by deep hole, again by using the smaller abrasive pastes of granularity
Deep hole is ground to reduce the surface roughness of deep hole until qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507041.8A CN108723980A (en) | 2018-05-24 | 2018-05-24 | For the mill of precision deep bore processing and the grinding method of precision deep bore |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507041.8A CN108723980A (en) | 2018-05-24 | 2018-05-24 | For the mill of precision deep bore processing and the grinding method of precision deep bore |
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| CN108723980A true CN108723980A (en) | 2018-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810507041.8A Pending CN108723980A (en) | 2018-05-24 | 2018-05-24 | For the mill of precision deep bore processing and the grinding method of precision deep bore |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202985325U (en) * | 2012-09-26 | 2013-06-12 | 中国电子科技集团公司第四十八研究所 | Grinding tool for improving processing precision of deep long through hole |
-
2018
- 2018-05-24 CN CN201810507041.8A patent/CN108723980A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202985325U (en) * | 2012-09-26 | 2013-06-12 | 中国电子科技集团公司第四十八研究所 | Grinding tool for improving processing precision of deep long through hole |
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Application publication date: 20181102 |