CN102513243A - Blade device for static oiling machine - Google Patents

Blade device for static oiling machine Download PDF

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Publication number
CN102513243A
CN102513243A CN2011104166271A CN201110416627A CN102513243A CN 102513243 A CN102513243 A CN 102513243A CN 2011104166271 A CN2011104166271 A CN 2011104166271A CN 201110416627 A CN201110416627 A CN 201110416627A CN 102513243 A CN102513243 A CN 102513243A
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China
Prior art keywords
oil
cutter
oil groove
rectangle
cutter beam
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CN2011104166271A
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Chinese (zh)
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高全杰
汪朝晖
夏志勇
章伟红
王家青
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Wuhan University of Science and Engineering WUSE
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Wuhan University of Science and Engineering WUSE
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Priority to CN2011104166271A priority Critical patent/CN102513243A/en
Publication of CN102513243A publication Critical patent/CN102513243A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a blade device for a static oiling machine. The technical scheme is as follows: the device comprises a left blade piece (4), a plastic thin film (5) and a right blade piece (7). The left blade piece (4) and the right blade piece (7) are coupled through a bolt (9). A circular oil groove (6) is arranged at the upper part between the left blade piece (4) and the right blade piece (7). A rectangular oil groove (2) is arranged at the lower part between the left blade piece (4) and the right blade piece (7). A double V-shaped oil groove (1) is arranged below the rectangular oil groove (2). The plastic thin film (5) is arranged between the left blade piece (4) and the right blade piece (7) and located above the rectangular oil groove (2) outside the circular oil groove (6). The gap of the blade device below the rectangular oil groove (2) is 0.1-0.2mm. Blade baffles (8) are respectively arranged at both ends of the left blade piece (4) and the right blade piece (7). The blade device has the advantages of good spraying effect and low oil consumption under low oil supply, and the thickness of the oil film is below 60 microns.

Description

A kind of cutter boom device that is used for electrostatic oiler
Technical field
The invention belongs to the electrostatic oiler technical field, be specifically related to a kind of cutter boom device that is used for electrostatic oiler.
Technical background
Cutter beam type electrostatic atomization apparatus is adopted in electrostatic spraying at present mostly, and its coating quality is good, spraying evenly, fuel consumption is few, has overcome that other device spraying is irregular, the defectives of strip holiday and a large amount of wastes of fluid." Electrostatic greasing device " (ZL98232316.6) discloses that to add machete beam voltage be the effective ways that increase electric-field intensity, reaches the electrostatic spraying problem of the purpose that improves the oil atomization effect with this; " electrostatic oiler atomizing cutter beam improves structure " (201020144406) are to prevent through the cross sectional shape that changes cutter beam inside tank that the inner slit of cutter beam from stopping up to improve spraying effect.Though above-mentioned various cutter beam has certain effect in the spraying that improves oiler, these cutter beams still exist following problem:
(1) in that to realize evenly spraying oil consumption required under the situation of atomizing effect preferably still bigger;
(2) have only and when fuel delivery reaches higher value, just can reach preferably evenly spraying effect, and the atomizing effect of its fluid is relatively poor when fuel delivery is lower than certain value, can cause along the length direction spraying of cutter beam discontinuous even;
(3) can not realize evenly spraying continuously preferably in the occasion that the satisfied oil film thickness as thin as a wafer of need requires.
Summary of the invention
The present invention is intended to overcome the defective of prior art, purpose provide a kind of spraying effect is good under the situation of less fuel delivery, fuel consumption is few and oil film thickness 60 μ mThe following cutter boom device that is used for electrostatic oiler.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is: this device comprises cutter beam left side sheet, plastic sheeting and the right sheet of cutter beam.Cutter beam left side sheet length and width and height equate with high with the right sheet length and width of cutter beam that respectively the right sheet of cutter beam left side sheet and cutter beam passes through Bolt Connection; Top between cutter beam left side sheet and the right sheet of cutter beam is provided with circulating oil tank, and the bottom between cutter beam left side sheet and the right sheet of cutter beam is provided with the rectangle oil groove, below the rectangle oil groove, is provided with two " V " shape oil grooves.Between cutter beam left side sheet and the right sheet of cutter beam, be provided with plastic sheeting, plastic sheeting is positioned at the rectangle oil groove top except that circulating oil tank.Cutter beam left side sheet and the gap of the right sheet of cutter beam below the rectangle oil groove are 0.1~0.2 Mm, the two ends of cutter beam left side sheet and the right sheet of cutter beam respectively are provided with cutter beam baffle plate.
Vertical range apart from sheet upper end, a cutter beam left side l 3The place flatly is provided with first work from left to right successively and uses the oil-in with oil-in, recycle oil inlet, recycle oil outlet and second work, and first work is symmetrically distributed with the oil-in with the oil-in and second work, and the recycle oil inlet is symmetrically distributed with the recycle oil outlet; First work uses oil-in and recycle oil to enter the mouth l 1With l 2
The medial surface of sheet is provided with left circulating oil tank on a cutter beam left side; Left side circulating oil tank communicates with recycle oil inlet and recycle oil outlet; One end of left side circulating oil tank is positioned at first work with between oil-in and recycle oil outlet; The other end of left side circulating oil tank is positioned at second work with between oil-in and recycle oil outlet, and the cross section of left circulating oil tank is a rectangle.The sheet inner surface is apart from the lower end on a cutter beam left side l 4Place's along continuous straight runs is provided with left rectangle oil groove; First works communicates with left rectangle oil groove with the first interior oil circuit groove of oil-in through cutter beam left side sheet inner surface, and second work communicates with left rectangle oil groove with the second interior oil circuit groove of oil-in through cutter beam left side sheet inner surface; The lower horizontal of left rectangle oil groove be provided with a left side " V " shape oil groove.
Be provided with right circulating oil tank at the right sheet of cutter beam, the cross sectional shape of right circulating oil tank is identical with left circulating oil tank with size, and right circulating oil tank is identical with the position of left circulating oil tank sheet on a cutter beam left side in the position of the right sheet of cutter beam; Below right circulating oil tank, flatly be provided with right rectangle oil groove and the right side " V " shape oil groove successively; The cross sectional shape of right rectangle oil groove and left rectangle oil groove and measure-alike; The cross sectional shape of right " V " shape oil groove is identical with a left side " V " shape oil groove with size, and right rectangle oil groove is identical with the correspondence position of left rectangle oil groove and a left side " V " shape oil groove sheet on a cutter beam left side in the position of the right sheet of cutter beam with right " V " shape oil groove.
The cutter boom device is installed the back: right rectangle oil groove and left rectangle oil groove constitute the rectangle oil groove of this cutter boom device; Right " V " shape oil groove and a left side " V " shape oil groove constitute two " V " shape oil grooves of this cutter boom device; Left side circulating oil tank and right circulating oil tank constitute the circulating oil tank of this cutter boom device.
In technique scheme: l 1 =0.016 ~ 0.02 l l 2 =0.027 ~ 0.035 l l 3 =0.2 ~ 0.3 l 0 l 4 =0.26 ~ 0.37 l 0The rectangle oil groove is 4 ~ 6 with the distance between center line of two " V " shape oil grooves Mm lLength for the cutter boom device; l 0Height for the cutter boom device.
Described first work is all big by 1 ~ 2 than the width of rectangle oil groove with the diameter of oil-in with the diameter and second work of oil-in MmThe width of rectangle oil groove is 7 ~ 9 Mm, highly be 5 ~ 6 MmThe width of two " V " shape oil groove is littler by 2 ~ 3 than the width of rectangle oil groove Mm, highly be 5 ~ 6 Mm, the angle in two " V " shape hypotenuse and cutter boom device gap is α, α is 18 ~ 22o.
Owing to adopt technique scheme, the gap between cutter beam left side sheet of the present invention and the right sheet of cutter beam is controlled by the thickness of plastic sheeting, and its gap is 0.1 ~ 0.2 MmCutter beam baffle plate is to overflow from cutter boom device two ends with oil for prevention work; But circulating oil tank is a tool setting boom device and the oily effect of playing preheating when environment temperature is low, and this helps work and flows with the smooth and easy of oil; The width of rectangle oil groove is worked with the diameter of oil-in with oil-in and second less than first work, is that influenced by oil circuit less in order to make fluid can in the shortest time, get into rectangle oil groove and its speed; The width of rectangle oil groove is bigger by 2 ~ 3 than two " V " shape oil grooves MmInhomogeneous in the time of can avoiding fluid to get into two " V " shape oil groove; Guarantee the uniformity that fluid flows in cutter beam gap; Can avoid again owing to fluid is full of the rectangle oil groove long situation that makes the top that is coated with workpiece blank spraying occur consuming time, the angle in two " V " shape oil groove hypotenuse and cutter boom device gap is about 20 °.
Therefore, the present invention compared with prior art has some good effects:
Because two " V " shape oil groove width are much larger than the gap of cutter boom device; When fluid gets into two " V " shape oil groove from the gap of the cutter boom device of rectangle oil groove lower end; Fluid can produce the jet phenomenon, and the fluid that produces jet is assembled in the protruding both sides of two " V " shape oil groove bottom, when liquid level reach a certain height, just begins to cover protruding top; Cutter beam gap with two " V " shape oil groove lower ends of speed entering more stably; From cutter boom device cutting edge atomizing ejection, make two " V " shape oil grooves improve velocity distribution uniformity and the atomizing effect of fluid at last, satisfy the evenly spraying requirement continuously when less fuel delivery at cutter boom device cutting edge place.Two " V " shape tank structures of intermediate projections; Avoided effectively under less fuel delivery because the disturbing phenomenon of jet speed when causing fluid to pass through gap, cutter boom device cutting edge place, thus when guaranteeing the fluid ejection along the continuity and the uniformity of cutter boom device length direction.So two " V " shape oil grooves can make the cutter boom device under the situation of less fuel delivery, obtain preferably all even spraying effect as thin as a wafer continuously; Because fuel delivery not only can reduce power consumption and oil consumption less, and (its oil film thickness can reach 30~60 to satisfy as thin as a wafer oil film thickness μ m) requirement, thereby both satisfied the evenly coating thickness requirement as thin as a wafer continuously under the less fuel delivery, also significantly reduced antirust cost.
So, the present invention have that spraying effect is good under the situation of less fuel delivery, fuel consumption is few and oil film thickness 60 μ mFollowing characteristics.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 looks sketch map for the left side of Fig. 1;
Fig. 3 is the A-A generalized section of Fig. 3;
Fig. 4 is the inboard shape sketch map of cutter beam left side sheet 3 among Fig. 1;
Fig. 5 is the inboard shape sketch map of the right sheet 4 of cutter beam among Fig. 1;
Fig. 6 is the cross section enlarged diagram of two " V " shape oil grooves 1 among Fig. 1.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention being further described, is not the restriction to its protection domain:
Embodiment 1
A kind of cutter boom device that is used for electrostatic oiler.This device is as shown in figures 1 and 3, and this device comprises cutter beam left side sheet 4, plastic sheeting 5 and the right sheet 7 of cutter beam.Cutter beam left side sheet 4 length and widths and height equate with high with right sheet 7 length and widths of cutter beam that respectively cutter beam left side sheet 4 connects through bolt 9 with the right sheet 7 of cutter beam.The top of 7 of right sheets of sheet 4 and cutter beam is provided with circulating oil tank 6 on a cutter beam left side, is provided with rectangle oil groove 2 in the bottom of 7 of cutter beam left side sheet 4 and the right sheets of cutter beam, below rectangle oil groove 2, is provided with two " V " shape oil grooves 1.Be provided with plastic sheeting 5 at cutter beam left side sheet 4 and right 7 of the sheets of cutter beam, plastic sheeting 5 is positioned at rectangle oil groove 2 tops except that circulating oil tank 6.Cutter beam left side sheet 4 is 0.1~0.2 with the gap of the right sheet 7 of cutter beam below rectangle oil groove 2 Mm, the two ends of cutter beam left side sheet 4 and the right sheet 7 of cutter beam respectively are provided with cutter beam baffle plate 8.
As shown in Figure 2, apart from the vertical range of sheet 4 upper ends, a cutter beam left side l 3The place flatly is provided with first work from left to right successively and works with oil-in 13 with oil-in 10, recycle oil inlet 3, recycle oil outlet 12 and second; First work is symmetrically distributed with oil-in 13 with the oil-in 10 and second work, and recycle oil inlet 3 is symmetrically distributed with recycle oil outlet 12; First work uses oil-in 10 and recycle oil inlet 3 apart from the respective on a nearer limit of left cutter beam 4 to do l 1With l 2
The shape of the medial surface of cutter beam left side sheet 4 is as shown in Figure 4; The medial surface of sheet 4 is provided with left circulating oil tank 16 on a cutter beam left side; Left side circulating oil tank 16 communicates with recycle oil inlet 3 and recycle oil outlet 12; One end of left side circulating oil tank 16 is positioned at first work and exports 3 with oil-in 10 and recycle oil, and the other end of left circulating oil tank 16 is positioned at second work and exports 12 with oil-in 13 and recycle oil, and the cross section of left circulating oil tank 16 is a rectangle.Sheet 4 inner surfaces are apart from the lower end on a cutter beam left side l 4Place's along continuous straight runs is provided with left rectangle oil groove 17; First works communicates with left rectangle oil groove 17 with the first interior oil circuit groove 14 of oil-in 10 through cutter beam left side sheet 4 inner surfaces, and second work communicates with left rectangle oil groove 17 with the second interior oil circuit groove 15 of oil-in 13 through cutter beam left side sheet 4 inner surfaces; The lower horizontal of left rectangle oil groove 17 be provided with a left side " V " shape oil groove 18.
The shape of the medial surface of the right sheet 7 of cutter beam is as shown in Figure 5, is provided with right circulating oil tank 19 at the right sheet 7 of cutter beam,
The cross sectional shape of right circulating oil tank 19 and size are identical with left circulating oil tank 16, and the position of right circulating oil tank 19 sheet 7 on the cutter beam right side is identical in the position of the left sheet 4 of cutter beam with left circulating oil tank 16; Below right circulating oil tank 19, flatly be provided with right rectangle oil groove 20 and the right side " V " shape oil groove 21 successively; The cross sectional shape of right rectangle oil groove 20 and left rectangle oil groove 17 and measure-alike; The cross sectional shape of right " V " shape oil groove 21 is identical with a left side " V " shape oil groove 18 with size, and right rectangle oil groove 20 is identical with the correspondence position of left rectangle oil groove 17 and a left side " V " shape oil groove 18 sheet 4 on a cutter beam left side in the position of the right sheet 7 of cutter beam with right " V " shape oil groove 21.
Earlier with alignment pin 11 location, connect through bolt 9 then during the cutter boom device.The back is installed: right rectangle oil groove 20 and left rectangle oil groove 17 constitute the rectangle oil groove 2 of these cutter boom devices; Right " V " shape oil groove 21 and a left side " V " shape oil groove 18 constitute two " V " shape oil grooves 1 of these cutter boom devices; The circulating oil tank 6 of left side circulating oil tank 16 and right circulating oil tank 19 these cutter boom devices of formation.
In the present embodiment: l 1 =0.016 ~ 0.018 l l 2 =0.027 ~ 0.030 l l 3 =0.2 ~ 0.25 l 0 l 4 =0.26 ~ 0.32 l 0Rectangle oil groove 2 is 4 ~ 5mm with the distance between center line of two " V " shape oil grooves 1; lLength for the cutter boom device; l 0Height for the cutter boom device.
First work of present embodiment is all big by 1 ~ 2 than the width of rectangle oil groove 2 with the diameter of oil-in 13 with the diameter and second work of oil-in 10 MmThe width of rectangle oil groove 2 is 7 ~ 9 Mm, highly be 5 ~ 6 MmThe width of two " V " shape oil groove 1 is littler by 2 ~ 3 than the width of rectangle oil groove 2 Mm, highly be 5 ~ 6 Mm, the angle in two " V " shape hypotenuse and cutter beam gap is α, α is 18 ~ 22o.
Embodiment 2
A kind of cutter boom device that is used for electrostatic oiler.This device is except that following technical parameter, and all the other are with embodiment 1:
l 1 =0.018 ~ 0.02 l l 2 =0.030 ~ 0.035 l l 3 =0.25 ~ 0.3 l 0 l 4 =0.28 ~ 0.37 l 0Rectangle oil groove 2 is 5 ~ 6 with the distance between center line of two " V " shape oil grooves 1 Mm
The gap that cutter beam left side sheet 4 of this specific embodiment and the right sheet of cutter beam are 7 is controlled by the thickness of plastic sheeting 5, and its gap is 0.1 ~ 0.2 MmCutter beam baffle plate 8 is to overflow from cutter boom device two ends with oil for prevention work; But circulating oil tank 6 is tool setting boom devices and the oily effect of playing preheating when environment temperature is low, and this helps work and flows with the smooth and easy of oil; The width of rectangle oil groove 2 is worked with the diameter of oil-in 13 with oil-in 10 and second less than first work, is that influenced by oil circuit less in order to make fluid can in the shortest time, get into rectangle oil groove 2 and its speed; The width of rectangle oil groove 2 is bigger by 2 ~ 3 than two " V " shape oil grooves 1 MmInhomogeneous in the time of can avoiding fluid to get into two " V " shape oil groove 1; Guarantee the uniformity that fluid flows in cutter beam gap, can avoid again that the angle in two " V " shape oil groove 1 hypotenuse and cutter beam gap is about 20 ° owing to fluid is full of the rectangle oil groove 2 long situation that make the top that is coated with workpiece blank spraying occur consuming time; High point is end in cutter beam gap, and low spot is away from cutter beam gap end.
This specific embodiment compared with prior art has some good effects:
Because two " V " shape oil groove 1 width are much larger than the gap of cutter boom device; When fluid gets into two " V " shape oil groove 1 from the device gap of the cutter beam of rectangle oil groove 2 lower ends; Fluid can produce the jet phenomenon; The fluid that produces jet is assembled in the protruding both sides of two " V " shape oil groove 1 bottom;, liquid level just begins to cover protruding top when reaching a certain height, with the cutter boom device gap of two " V " shape oil groove 1 lower ends of speed entering more stably, at last from cutter boom device cutting edge atomizing ejection; Make two " V " shape oil grooves 1 improve velocity distribution uniformity and the atomizing effect of fluid, satisfied the evenly spraying requirement continuously when less fuel delivery at cutter boom device cutting edge place.The structure of two " V " shape oil grooves 1 of intermediate projections; Avoided effectively under less fuel delivery because the disturbing phenomenon of jet speed when causing fluid to pass through gap, cutter boom device cutting edge place, thus when guaranteeing the fluid ejection along the continuity and the uniformity of cutter boom device length direction.So two " V " shape oil grooves 1 can make the cutter boom device under the situation of less fuel delivery, obtain preferably all even spraying effect as thin as a wafer continuously; Because fuel delivery not only can reduce power consumption and oil consumption less, and (its oil film thickness can reach 30~60 to satisfy as thin as a wafer oil film thickness μ m) requirement, thereby both satisfied the evenly coating thickness requirement as thin as a wafer continuously under the less fuel delivery, also significantly reduced antirust cost.
So, the present invention have that spraying effect is good under the situation of less fuel delivery, fuel consumption is few and oil film thickness 60 μ mFollowing characteristics.

Claims (2)

1. cutter boom device that is used for electrostatic oiler; It is characterized in that this device comprises cutter beam left side sheet (4), plastic sheeting (5) and the right sheet (7) of cutter beam; Cutter beam left side sheet (4) length and width and height equate with high that with right sheet (7) length and width of cutter beam cutter beam left side sheet (4) and the right sheet of cutter beam (7) connect through bolt (9) respectively; Top between cutter beam left side sheet (4) and the right sheet of cutter beam (7) is provided with circulating oil tank (6), and the bottom between cutter beam left side sheet (4) and the right sheet of cutter beam (7) is provided with rectangle oil groove (2), is provided with two " V " shape oil grooves (1) in the below of rectangle oil groove (2); Between cutter beam left side sheet (4) and the right sheet of cutter beam (7), be provided with plastic sheeting (5); Plastic sheeting (5) is positioned at rectangle oil groove (2) top except that circulating oil tank (6), and cutter beam left side sheet (4) and the right sheet of cutter beam (7) are 0.1~0.2 in the gap of rectangle oil groove (2) below Mm, the two ends of cutter beam left side sheet (4) and the right sheet of cutter beam (7) respectively are provided with cutter beam baffle plate (8);
Vertical range apart from cutter beam left side sheet (4) upper end l 3The place flatly is provided with first work from left to right successively and works with oil-in (13) with oil-in (10), recycle oil inlet (3), recycle oil outlet (12) and second; First work is symmetrically distributed with oil-in (13) with oil-in (10) and second work, and recycle oil inlet (3) is symmetrically distributed with recycle oil outlet (12); First work with the enter the mouth respective on a nearer limit of (3) the left cutter beams of distance (4) of oil-in (10) and recycle oil does l 1With l 2
Medial surface at cutter beam left side sheet (4) is provided with left circulating oil tank (16); Left side circulating oil tank (16) communicates with recycle oil inlet (3) and recycle oil outlet (12); One end of left side circulating oil tank (16) is positioned at first work with between oil-in (10) and recycle oil outlet (3); The other end of left side circulating oil tank (16) is positioned at second work with between oil-in (13) and recycle oil outlet (12), and the cross section of left circulating oil tank (16) is a rectangle; Sheet (4) inner surface is apart from the lower end on a cutter beam left side l 4Place's along continuous straight runs is provided with left rectangle oil groove (17); First works communicates with left rectangle oil groove (17) with oil-in (10) first interior oil circuit groove (14) through cutter beam left side sheet (4) inner surface, and second work communicates with left rectangle oil groove (17) with oil-in (13) second interior oil circuit groove (15) through cutter beam left side sheet (4) inner surface; The lower horizontal of left rectangle oil groove (17) be provided with a left side " V " shape oil groove (18);
Be provided with right circulating oil tank (19) at the right sheet of cutter beam (7); The cross sectional shape of right circulating oil tank (19) is identical with left circulating oil tank (16) with size, and right circulating oil tank (19) is identical in the position of cutter beam left side sheet (4) with left circulating oil tank (16) in the position of the right sheet of cutter beam (7); Flatly be provided with right rectangle oil groove (20) and right " V " shape oil groove (21) successively in the below of right circulating oil tank (19); The cross sectional shape of right rectangle oil groove (20) and left rectangle oil groove (17) and measure-alike; The cross sectional shape of right " V " shape oil groove (21) is identical with a left side " V " shape oil groove (18) with size, and right rectangle oil groove (20) is identical at the correspondence position of cutter beam left side sheet (4) with left rectangle oil groove (17) and a left side " V " shape oil groove (18) in the position of the right sheet of cutter beam (7) with right " V " shape oil groove (21);
After said cutter boom device is installed; Right rectangle oil groove (20) and left rectangle oil groove (17) constitute the rectangle oil groove (2) of this cutter boom device; Right " V " shape oil groove (21) and a left side " V " shape oil groove (18) constitute two " V " shape oil grooves (1) of this cutter boom device, and left circulating oil tank (16) and right circulating oil tank (19) constitute the circulating oil tank (6) of this cutter boom device;
In technique scheme: l 1 =0.016 ~ 0.02 l l 2 =0.027 ~ 0.035 l l 3 =0.2 ~ 0.3 l 0 l 4 =0.26 ~ 0.37 l 0The distance between center line of rectangle oil groove (2) and two " V " shape oil grooves (1) is 4 ~ 6 Mm lLength for the cutter boom device; l 0Height for the cutter boom device.
2. the cutter boom device that is used for electrostatic oiler according to claim 1, all the width than rectangle oil groove (2) is big by 1 ~ 2 for diameter with oil-in (13) to it is characterized in that working described first work with the diameter of oil-in (10) and second MmThe width of rectangle oil groove (2) is 7 ~ 9 Mm, highly be 5 ~ 6 MmThe width of two " V " shape oil groove (1) is littler by 2 ~ 3 than the width of rectangle oil groove (2) Mm, highly be 5 ~ 6 Mm, the angle in two " V " shape hypotenuse and cutter boom device gap is α, α is 18 ~ 22o.
CN2011104166271A 2011-12-14 2011-12-14 Blade device for static oiling machine Pending CN102513243A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102824973A (en) * 2012-09-24 2012-12-19 武汉科技大学 Electrostatic oiling knife beam device for additional electrode

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102824973A (en) * 2012-09-24 2012-12-19 武汉科技大学 Electrostatic oiling knife beam device for additional electrode

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Application publication date: 20120627