CN105171333A - Rolling finishing processing cutter and rolling technology thereof - Google Patents
Rolling finishing processing cutter and rolling technology thereof Download PDFInfo
- Publication number
- CN105171333A CN105171333A CN201510609143.7A CN201510609143A CN105171333A CN 105171333 A CN105171333 A CN 105171333A CN 201510609143 A CN201510609143 A CN 201510609143A CN 105171333 A CN105171333 A CN 105171333A
- Authority
- CN
- China
- Prior art keywords
- cutter
- rolling
- roller
- roll extrusion
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 49
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 210000004907 gland Anatomy 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims description 57
- 239000002184 metal Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 229910000677 High-carbon steel Inorganic materials 0.000 claims description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 229910000954 Medium-carbon steel Inorganic materials 0.000 claims description 3
- 238000003892 spreading Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000005461 lubrication Methods 0.000 abstract description 2
- 125000006850 spacer group Chemical group 0.000 abstract 2
- 230000009977 dual effect Effects 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000003754 machining Methods 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 229910001651 emery Inorganic materials 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
- B23P9/02—Treating or finishing by applying pressure, e.g. knurling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides a rolling finishing processing cutter and a rolling technology thereof. The rolling finishing processing cutter comprises a cutter rod, a mark cover, a gland, bolts, a core shaft, a wheel, a cutter body, a spacer sleeve, a bearing, a rear cover and screws. The cutter rod and the cutter body are fixedly connected into a whole. The spacer sleeve and the bearing are arranged in an inner hole of the cutter body. The core shaft is arranged in an inner hole of the bearing. The rear cover is fixedly connected with the right end face of the cutter body through the screws, and the bearing is positioned. The gland, the wheel and the mark cover are sequentially arranged at the left end of the core shaft. The gland is fixedly connected with the core shaft through the bolts for locking positioning. The bevel angle of the outer diameter end face of the mark cover and the outer diameter end face of the gland is 13 degrees. The wheel is made of hard alloy. The cross section of the cutter rod is in a quadrangle shape, the left face and the right face of the cutter rod are planes, and the upper face and the lower face of the cutter rod are both 1-degree conical faces. According to the rolling technology of the rolling finishing processing cutter, seven technological parameters including the rolling pressing angle and eight application methods are determined. The rolling finishing processing cutter and the rolling technology thereof have the beneficial effects that the dual effects of rolling spreading and rolling grinding are achieved, finishing can be rapidly carried out on the surfaces of components, the rolling speed is high, and lubrication cooling is not needed; and step shaft type components can roll to the root, and the service life is long.
Description
Technical field
The present invention relates to a kind of roll extrusion skin processing cutter and rolling technology thereof, belong to machining tool technical field.
Background technology
Rolling depression method is adopted to carry out skin processing to machinery part surface, the crudy of piece surface can be significantly improved, current rolling and processing cutter and technique have two classes, one class is ball-type rolling tool, and its defect only has pure rolling spreading effect, and workpiece need could obtain ideal effect after repeatedly roll extrusion, and diameter of work and ball diameter ratio large, rolling speed cannot improve, and needs oily cooling, can not be rolled into root to step axial workpiece; Another kind of is roller rolling tool, and its defect has pure rolling to grind pressure effect, and roll spreading weak effect, also needs repeatedly roll extrusion, and requires higher to workpiece initial roughness, and workpiece rotational frequency is carried not high, the shoulder root of workpiece roll less than.
Summary of the invention
In order to solve the problem, object of the present invention is just to provide a kind of roll extrusion skin processing cutter and rolling technology thereof.
Technical scheme of the present invention is: a kind of roll extrusion skin processing cutter, comprises knife bar, mark lid, gland, bolt, axle, roller, cutter hub, interstage sleeve, bearing, bonnet and screw,
Wherein, described knife bar and cutter hub fix as one, interstage sleeve and bearing is provided with in cutter hub endoporus, axle is provided with in brearing bore, bonnet by screw and cutter hub right side affixed and locate to bearing, axle left end is provided with gland and roller and mark successively and covers, and gland is by bolt and the affixed locking positioning of axle.
Further, the outer-diameter end face oblique angle of described mark lid and gland is 13 °.
Further, the material of described roller is carbide alloy.
Further, described knife bar cross section is quadrangle, and two sides, left and right is plane, and upper and lower surface is all the conical surface of 1 °.
Another object of the present invention is to provide the rolling technology of above-mentioned roll extrusion skin processing cutter, specifically comprises the following steps:
Step 1. is according to pending workpiece determination rolling technology parameter;
The technological parameter that step 2. is determined according to step 1, will determine that the roller (6) of diameter is arranged on cutter;
Step 3. roll extrusion:
A), when installing this cutter, center cutter is lower than pending workpiece centre 2 ~ 5mm;
B), adjust roller (6) roll extrusion and oblique angle α is installed
peace;
C), be set to s, intrusion t and rolling speed V as far as possible, and holding workpiece surface is clean;
D), roll extrusion time, first roller (6) working face is placed on the cylindrical of workpiece near-end 2mm, roller (6) and workpiece gentle touchdown, then drives, according to determining that thrust P carries out rolling and processing after applying thrust again;
E), workpiece first chamfering again after roll extrusion, to eliminate end face injustice, roll extrusion completes,
Further, the concrete steps of the determination technological parameter of described step 1 are as follows:
A), according to the material of workpiece determine to roll and roll angle γ: when roll extrusion mild steel and non-ferrous metal, roll and roll angle and get γ=10 °; During roll extrusion medium carbon steel, get γ=14 °; During roll extrusion high-carbon steel, for preventing metal grain from causing broken grain, get γ=12 °;
B), roller end face inclination angle λ is determined:, the conical surface utilizing knife bar (1) upper and lower surface to be all 1 ° can obtain, λ=1 °;
C), oblique angle α is installed in roll extrusion
peacedetermination: when roller working face contacts with surface of the work, get its contact angle of cut α
peace=0.5 ° ± 5 ';
D), the selection of rolling speed v: when the draw ratio of workpiece is no more than 10, get v=100 ~ 200m/min; When the draw ratio of workpiece is greater than 10, get v < 100m/min;
E), the selection of amount of feeding s and intrusion t: amount of feeding s directly affects surface roughness and the working (machining) efficiency of workpiece, and intrusion t is decided by workpiece preprocessing roughness, s=0.1 ~ 0.2mm/r; Get intrusion t=0.01 ~ 0.025mm;
F), the determination of thrust p: thrust p is an important technical parameter of rolling and processing, and it affects the surface roughness of workpiece, chilled depth, residual stress and working (machining) efficiency, through practical measurement, selects thrust p=50 ~ 500 ㎏;
G), the selection of roller diameter D:
Roller diameter D is selected to be listed in the table below:
The invention has the beneficial effects as follows: have to roll spreading and roll and grind pressure double effects, energy is polishing piece surface rapidly, and rolling speed is high, and without the need to lubrication, step axial workpiece can be rolled into root, long service life.
Accompanying drawing explanation
Fig. 1 is roll extrusion skin processing cutter structure schematic diagram of the present invention.
Fig. 2 is the knife bar cross-sectional structure schematic diagram of roll extrusion skin processing cutter of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described further, as accompanying drawing 1, shown in accompanying drawing 2, a kind of roll extrusion skin processing cutter, comprise knife bar 1, mark lid 2, gland 3, bolt 4, axle 5, roller 6, cutter hub 7, interstage sleeve 8, bearing 9, bonnet 10 and screw 11, knife bar 1 and cutter hub 7 fix as one, interstage sleeve 8 and bearing 9 is provided with in the endoporus of cutter hub 7, axle 5 is provided with in the endoporus of bearing 9, bonnet 10 is affixed and locate to bearing 9 by screw 11 and cutter hub 7 right side, the left end of axle 5 is provided with gland 3 and roller 6 successively and marks lid 2, gland 3 is by bolt 4 and the affixed locking positioning of axle 5.
Described a kind of mark lid 2 of roll extrusion skin processing cutter and the outer-diameter end face oblique angle of gland 3 are 13 °.
The material of the roller 6 of described a kind of roll extrusion skin processing cutter is carbide alloy.
Knife bar 1 cross section of described a kind of roll extrusion skin processing cutter is quadrangle, and two sides, left and right is plane, and upper and lower surface is all the conical surface of 1 °.
The rolling technology of described a kind of roll extrusion skin processing cutter, specifically comprises the following steps:
Step 1: determine technological parameter:
A), roll the selection rolling angle γ: when roll extrusion mild steel and non-ferrous metal, roll and roll angle and get γ=10 °; During roll extrusion medium carbon steel, get γ=14 °; During roll extrusion high-carbon steel, for preventing metal grain from causing broken grain, desirable γ=12 °;
B), the selection of roller end face inclination angle λ: when λ=0, the roll extrusion of pair of rollers workpiece is a pure rolling, does not produce and grinds pressure effect, when λ ≠ 0, roller and workpiece are relative rollings, friction can be produced and grind pressure and instantaneous high heat, thus cause the temporarily softening of metal surface, grind under pressure rolling, surface of the work obtains abundant polish, consider in conjunction with factors such as rolling speeds, get λ=1 °, the conical surface utilizing knife bar upper and lower surface to be all 1 ° can obtain;
C), oblique angle α is installed in roll extrusion
peacedetermination: when roller working face contacts with surface of the work, get its contact angle of cut α
peace=0.5 ° ± 5 ';
D), the selection of rolling speed v: when the draw ratio of workpiece is no more than 10, get v=100 ~ 200m/min; When the draw ratio of workpiece is greater than 10, get v < 100m/min;
E), the selection of amount of feeding s and intrusion t: amount of feeding s directly affects surface roughness and the working (machining) efficiency of workpiece, and intrusion t is decided by workpiece preprocessing roughness, considers, and selects s=0.1 ~ 0.2mm/r; Get intrusion t=0.01 ~ 0.025mm;
F), the determination of thrust p: thrust p is an important technical parameter of rolling and processing, and it affects the surface roughness of workpiece, chilled depth, residual stress and working (machining) efficiency, through practical measurement, selects thrust p=50 ~ 500 ㎏;
G), the selection of roller diameter D: select roller diameter D to be listed in the table below:
Step 2: using method:
A), when installing this cutter, center cutter is lower than workpiece centre 2 ~ 5mm;
B), adjust roll extrusion and oblique angle α is installed
peaceafter, the concrete numerical value of intrusion t is measured, to grasp the accurate dimension of workpiece after roll extrusion;
C), according to the intrusion t determined, reserve rollingpress allowance, and holding workpiece surface is clean;
D), roll extrusion time, first roller working face is placed on the cylindrical of workpiece near-end 2mm, with workpiece gentle touchdown, then drives, applying thrust after carry out rolling and processing again;
E), workpiece first chamfering again after roll extrusion, to eliminate end face injustice, roll extrusion completes.
Embodiment:
Step 1. according to pending workpiece determination rolling technology parameter,
A), workpiece is high-carbon steel, during roll extrusion, for preventing metal grain from causing broken grain, gets γ=12 °;
B), roller end face inclination angle λ is determined: the conical surface utilizing knife bar 1 upper and lower surface to be all 1 ° can obtain, λ=1 °;
C), oblique angle α is installed in roll extrusion
peacedetermination: when roller working face contacts with surface of the work, get its contact angle of cut α
peace=0.5 ° ± 5 ';
D), the selection of rolling speed v: when the draw ratio of workpiece is 8, get v=100 ~ 200m/min;
E), the selection of amount of feeding s and intrusion t: amount of feeding s=0.1mm/r; Intrusion t=0.01;
F), the determination of thrust p: thrust p=100 ㎏;
G), the selection of roller diameter D: the diameter 100 of workpiece, roller diameter selection 80mm;
The technological parameter that step 2. is determined according to step 1, will determine that the roller (6) of diameter is arranged on cutter;
Step 3. roll extrusion:
A), when installing this cutter, center cutter is lower than pending workpiece centre 2 ~ 5mm;
B), adjust roller (6) roll extrusion and oblique angle α is installed
peace;
C), be set to s, intrusion t and rolling speed V as far as possible, and holding workpiece surface is clean;
D), roll extrusion time, first roller (6) working face is placed on the cylindrical of workpiece near-end 2mm, roller (6) and workpiece gentle touchdown, then drives, according to determining that thrust P carries out rolling and processing after applying thrust again;
E), workpiece first chamfering again after roll extrusion, to eliminate end face injustice;
F), after workpiece roll extrusion, if when size is also greater than tolerance prescribed limit, don't roll extrusion again, because the surface of the work after roll extrusion has again been pressed to go down, other ways available as after file, emery cloth finishing, then carry out press polish with light pressure;
G), roll extrusion time, should wipe in time clearly and protect roller, be sure not collision, in case roller working face has tiny flaw;
H), the precision of lathe and live center and good clamping workpiece to be noted, and notice that workpiece and lathe have friction.
Claims (6)
1. a roll extrusion skin processing cutter, comprise knife bar (1), mark lid (2), gland (3), bolt (4), axle (5), roller (6), cutter hub (7), interstage sleeve (8), bearing (9), bonnet (10) and screw (11), it is characterized in that: knife bar (1) and cutter hub (7) fix as one, interstage sleeve (8) and bearing (9) is provided with in cutter hub (7) endoporus, axle (5) is provided with in bearing (9) endoporus, bonnet (10) is affixed and locate to bearing (9) by screw (11) and cutter hub (7) right side, axle (5) left end is provided with gland (3) and roller (6) and mark successively and covers (2), gland (3) is by bolt (4) and axle (5) affixed locking positioning.
2. a roll extrusion skin processing cutter as claimed in claim 1, is characterized in that: the outer-diameter end face oblique angle of the outer-diameter end face of described mark lid (2) and gland (3) is 13 °.
3. a roll extrusion skin processing cutter as claimed in claim 1, is characterized in that: the material of described roller (6) is carbide alloy.
4. a roll extrusion skin processing cutter as claimed in claim 1, it is characterized in that: described knife bar (1) cross section is quadrangle, and two sides, left and right is plane, upper and lower surface is all the conical surface of 1 °.
5. a rolling technology for roll extrusion skin processing cutter as claimed in claim 1, is characterized in that: specifically comprise the following steps:
Step 1. is according to pending workpiece determination rolling technology parameter;
The technological parameter that step 2. is determined according to step 1, will determine that the roller (6) of diameter is arranged on cutter;
Step 3. roll extrusion:
A), when installing this cutter, center cutter is lower than pending workpiece centre 2 ~ 5mm;
B), adjust roller (6) roll extrusion and oblique angle α is installed
peace;
C), be set to input s, intrusion t and rolling speed V, and holding workpiece surface is clean;
D), roll extrusion time, first roller (6) working face is placed on the cylindrical of workpiece near-end 2mm, roller (6) and workpiece gentle touchdown, then drives, according to determining that thrust P carries out rolling and processing after applying thrust again;
E), workpiece first chamfering again after roll extrusion, to eliminate end face injustice, roll extrusion completes.
6. technique according to claim 5, is characterized in that, the concrete steps of the determination technological parameter of described step 1 are as follows:
A), according to the material of workpiece determine to roll and roll angle γ: when roll extrusion mild steel and non-ferrous metal, roll and roll angle and get γ=10 °; During roll extrusion medium carbon steel, get γ=14 °; During roll extrusion high-carbon steel, for preventing metal grain from causing broken grain, get γ=12 °;
B), roller end face inclination angle λ is determined: the conical surface utilizing knife bar (1) upper and lower surface to be all 1 ° can obtain, λ=1 °;
C), oblique angle α is installed in roll extrusion
peacedetermination: when roller working face contacts with surface of the work, get its contact angle of cut α
peace=0.5 ° ± 5 ';
D), the selection of rolling speed v: when the draw ratio of workpiece is no more than 10, get v=100 ~ 200m/min; When the draw ratio of workpiece is greater than 10, get v < 100m/min;
E), the selection of amount of feeding s and intrusion t: amount of feeding s=0.1 ~ 0.2mm/r; Intrusion t=0.01 ~ 0.025mm;
F), the determination of thrust p: thrust p is an important technical parameter of rolling and processing, thrust p=50 ~ 500 ㎏;
G), the selection of roller diameter D:
When diameter of work is: 112 ~ 157mm, 202 ~ 247 or 292 ~ 337mm time, roller diameter select 90mm;
When diameter of work is: 100 ~ 111mm, 180 ~ 201 or 260 ~ 291mm time, roller diameter select 80mm;
When diameter of work is: 87 ~ 99mm, 158 ~ 179 or 248 ~ 259mm time, roller diameter select 70mm;
When diameter of work is: during 75 ~ 86mm, roller diameter selects 60mm;
When diameter of work is: during 62 ~ 74mm, roller diameter selects 50mm;
When diameter of work is: during 45 ~ 61mm, roller diameter selects 36mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609143.7A CN105171333A (en) | 2015-09-22 | 2015-09-22 | Rolling finishing processing cutter and rolling technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609143.7A CN105171333A (en) | 2015-09-22 | 2015-09-22 | Rolling finishing processing cutter and rolling technology thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105171333A true CN105171333A (en) | 2015-12-23 |
Family
ID=54894006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510609143.7A Pending CN105171333A (en) | 2015-09-22 | 2015-09-22 | Rolling finishing processing cutter and rolling technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105171333A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414883A (en) * | 2015-12-31 | 2016-03-23 | 北京工商大学 | Roll finishing device |
| CN106002085A (en) * | 2016-06-29 | 2016-10-12 | 浙江中集轴承有限公司 | Bearing ring knurling tool device |
| CN109434372A (en) * | 2018-12-18 | 2019-03-08 | 珠海杭宇电子有限公司 | A kind of novel rolling cut flower machining tool and processing method |
| CN114918687A (en) * | 2022-02-11 | 2022-08-19 | 中国第一汽车股份有限公司 | Clamping tool for knurling crankcase ventilation pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200939556Y (en) * | 2006-09-01 | 2007-08-29 | 江西铜业股份有限公司永平铜矿 | Rolling tool |
| CN200974166Y (en) * | 2006-10-31 | 2007-11-14 | 扬动股份有限公司 | Excircle rigid rolling tool |
| CN103481013A (en) * | 2012-06-12 | 2014-01-01 | 中国北车集团大同电力机车有限责任公司 | Axle-rolling device |
| CN203817707U (en) * | 2014-03-26 | 2014-09-10 | 宁夏工商职业技术学院 | Narrow wheel rolling cutter applicable to spindly shaft finishing machining |
-
2015
- 2015-09-22 CN CN201510609143.7A patent/CN105171333A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200939556Y (en) * | 2006-09-01 | 2007-08-29 | 江西铜业股份有限公司永平铜矿 | Rolling tool |
| CN200974166Y (en) * | 2006-10-31 | 2007-11-14 | 扬动股份有限公司 | Excircle rigid rolling tool |
| CN103481013A (en) * | 2012-06-12 | 2014-01-01 | 中国北车集团大同电力机车有限责任公司 | Axle-rolling device |
| CN203817707U (en) * | 2014-03-26 | 2014-09-10 | 宁夏工商职业技术学院 | Narrow wheel rolling cutter applicable to spindly shaft finishing machining |
Non-Patent Citations (1)
| Title |
|---|
| 忻志芳: "滚压光整加工经验谈", 《机械制造》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105414883A (en) * | 2015-12-31 | 2016-03-23 | 北京工商大学 | Roll finishing device |
| CN106002085A (en) * | 2016-06-29 | 2016-10-12 | 浙江中集轴承有限公司 | Bearing ring knurling tool device |
| CN109434372A (en) * | 2018-12-18 | 2019-03-08 | 珠海杭宇电子有限公司 | A kind of novel rolling cut flower machining tool and processing method |
| CN114918687A (en) * | 2022-02-11 | 2022-08-19 | 中国第一汽车股份有限公司 | Clamping tool for knurling crankcase ventilation pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104295608B (en) | Ring processing method in oscillating bearing | |
| CN102335778A (en) | Cutting tool used for metal processing | |
| CN105171333A (en) | Rolling finishing processing cutter and rolling technology thereof | |
| CN103341729A (en) | Rotating shaft key groove machining method | |
| CN103273280B (en) | A kind of processing method of special type inspection template | |
| CN103753163B (en) | A kind of processing method of wood cutter | |
| CN110465817A (en) | The frock clamp and retainer pocket hole fore shaft processing method of retainer mill outer step pawl | |
| CN104889507A (en) | Long lead screw turning method | |
| CN205949880U (en) | Cutter that complete martensite alloy steel of cryrogenic that hardens cut firmly | |
| CN205497224U (en) | Trimming device of groove machining emery wheel | |
| CN105215628B (en) | A kind of processing method of high-precision axle bed endoporus | |
| CN202656047U (en) | Device for grinding eccentric sleeve of main shaft of disk shear | |
| CN210524722U (en) | Supporting mechanism for processing groove of outer circle of inner ring of roller bearing | |
| CN110919474B (en) | Method for processing ball head columnar ball-loading gap outer ring of double-row angular contact ball bearing | |
| CN218194219U (en) | Handheld grinding machine for grinding and deburring end faces of steel pipes | |
| CN105690281A (en) | Grinding wheel provided with sleeve | |
| CN103878692A (en) | Bearing inner ring channel super grinder positioning device | |
| Jin et al. | Research for discontinuous grinding wheel with multi-porous grooves | |
| CN214135517U (en) | Small water lubricating thrust disc surface processing device | |
| CN211889011U (en) | Online grinding device for wheel belt and sliding shoe grinding of rotary kiln | |
| CN108188671A (en) | A kind of lathe spindle processing technology for being conducive to processing efficiency and product quality | |
| CN110434571B (en) | The machining method of the inner hole of the cylinder | |
| CN105382663B (en) | A kind of processing method of diamond roller Surface inspection test piece | |
| CN206356597U (en) | A kind of boring machine cutting tool for seamless steel pipe ring pass machining | |
| CN106041679A (en) | Grinding method with residual stress controlled |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |