CN1850882A - Supersonic motor thermosetting resin base friction material and friction layer manufacturing method and auxiliary tool - Google Patents
Supersonic motor thermosetting resin base friction material and friction layer manufacturing method and auxiliary tool Download PDFInfo
- Publication number
- CN1850882A CN1850882A CN 200610040708 CN200610040708A CN1850882A CN 1850882 A CN1850882 A CN 1850882A CN 200610040708 CN200610040708 CN 200610040708 CN 200610040708 A CN200610040708 A CN 200610040708A CN 1850882 A CN1850882 A CN 1850882A
- Authority
- CN
- China
- Prior art keywords
- thermosetting resin
- friction materials
- stator
- friction
- base
- 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
Images
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention relates to an ultrasound dynamo thermosetting resin radical friction material and friction layer making method and the assistant tools. The material is made up of 35-80% thermosetting resin, 0-34% curing agent, 5-15% nanometer antifriction powder, 5-15% carbon fiber, 0-10% copper oxide, 0-5% polytetrafluoroethylene, 5-10% copper powder, 2-10% graphite, 0-5% nitrile butadiene rubber, and 0-10% mineral substance. The invention has excellent wear resistance, suitable rigidity, good output characteristic, etc. And the method is low cost and simple. The assistant tool is made up of moving bar and base.
Description
One, technical field:
The present invention relates to a kind of supersonic motor thermosetting resin base friction materials and rub layer manufacturing method and auxiliary means, belong to the ultrasound electric machine technical field.
Two, background technology:
(Utrasonic Motor USM), is a kind of novel micromotor that the twentieth century end grows up to supersonic motor.It utilizes the inverse piezoelectric effect of piezoelectric to inspire elastomeric ultrasonic vibration and realizes that electric energy arrives the conversion of mechanical energy, and utilizes rubbing effect between oscillator and the mover to move and power passes.Because ultrasound electric machine transmits energy by rubbing effect, so the quality of friction materials determines the work-ing life and the performance of supersonic motor to a great extent.
Domesticly start late in the research of ultrasound electric machine aspect its friction materials, the research unit that is engaged in this respect neither be a lot, and about the Study on Friction Materials report of ultrasound electric machine just still less.Ultrasound electric machine friction materials and CN200410043602.1 that Chinese patent CN033132555.6 discloses polytetrafluoroethylene (PTFE) base disclose polybenzoate polyblend ultrasound electric machine friction materials.The working method of these two kinds of friction materialss is, with the coldmoulding of blended friction materials, and by the high temperature sintering more than 370 ℃, and then the cutting flaky material, be adhesive at last on the rotor of motor.By the friction materials of this method processing, need expensive chilling press and high temperature sintering, course of processing complexity, cycle are long, the gluing use that limits it of secondary.
Studies show that the stator friction layer has higher wear resistance and better output characteristic with respect to the friction rotor layer.Abroad begin friction layer is produced on stator, the material of use is the thermoplasticity friction materials.Because the surface tension of thermoplastics is low, and has teeth groove on the stator, it is very difficult therefore making the stator friction layer.At present, the friction layer of domestic travelling wave supersonic motor all can only be produced on epitrochanterian, and it presses for more economically, processes the simple friction material and makes friction layer.
Three, summary of the invention:
The objective of the invention is to, overcome the deficiencies in the prior art, provide in a kind of performance and the prior art ultrasound electric machine friction materials suitable, but be convenient to economy, simply be processed into the supersonic motor thermosetting resin base friction materials of ultrasound electric machine friction layer.Another object of the present invention provides a kind of rub layer manufacturing method and auxiliary means of supersonic motor thermosetting resin base friction materials, this method have tooling cost more economically, complete processing characteristic of simple more.
A kind of supersonic motor thermosetting resin base friction materials is characterized in that being made up of by following mass percent following composition:
Base-material: thermosetting resin 35%～80%;
Solidifying agent: 0%～34%;
Toughener: nano wearproof powder 5%～15%, carbon fiber 5%～15%;
Properties-correcting agent: cupric oxide 0%～10%, tetrafluoroethylene 0%～5%, copper powder 5%～10%, graphite 2%～10%, paracril 0%～5%, mineral substance 0%～10%.
Above-mentioned thermosetting resin is one of following material or its mixture: Resins, epoxy, resol, urea-formaldehyde resin, unsaturated polyester, organosilicon, urethane, vibrin, acrylic resin.
The base-material of supersonic motor thermosetting resin base friction materials of the present invention is a thermosetting resin, and it is the thermosetting macromolecule material, and solidification value is low, also can solidify at normal temperatures.Different resins needs different solidifying agent, and some resin need not add solidifying agent, directly by heating cure.It is the liquid object shape before curing, can be easy to be sticked and coated on the surface of rotor or stator.In addition, it has higher surface force and force of cohesion, is difficult for decortication and very high wear-resistant type.Strongtheners such as interpolation toughener nano wearproof powder and carbon fiber can improve the hardness of friction layer.Adding the properties-correcting agent cupric oxide can increase the frictional coefficient of friction materials, and improves the wear resistance of material.Tetrafluoroethylene and paracril can be used for adjusting the hardness of material, so that reduce the wearing and tearing of friction materials to dual face.Copper powder can improve the thermal conductivity of material, and a spot of graphite can form transfer film between friction pair, and reduces the wearing and tearing of material.Mineral substance can be adjusted the hardness of material, improves the wear resistance of friction layer.
The making method of this friction materials is general ordinary method, promptly by ratio requirement thermosetting resin, toughener, properties-correcting agent is mixed, and stir, and the interpolation solidifying agent stirs.
A kind of layer manufacturing method that rubs of supersonic motor thermosetting resin base friction materials is characterized in that may further comprise the steps:
(1), at normal temperatures, the supersonic motor thermosetting resin base friction materials of the one-tenth glue shape that configures is stirred;
(2), the friction materials glue is sticked and coated on custom-designed as yet not on the stator of moulding or the rotor test specimen;
(3), will glue the stator that scribbles friction materials or rotor under 30 ℃～45 ℃ of temperature, through ultrasonic vibrator electric shock, levelling and drive away gas in the material;
(4), test specimen is placed in the baking box through 50 ℃～90 ℃ barbecues 30～180 minutes;
(5), stator after will roasting or rotor test specimen are through the machining moulding.
A kind of layer manufacturing method auxiliary means that rubs of supersonic motor thermosetting resin base friction materials, when being used for rotary-type ultrasound electric machine stator friction layer and making, the sticking friction materials that is coated with on stator, it is characterized in that this auxiliary means is made up of carriage release lever and base, and described carriage release lever main body is a right cylinder, be used for the suit annular stator, its lower end has limited block, and as guide rail; Stopper slot and a charge groove that is used to hold friction materials of having a guide rail that is used for carriage release lever to be complementary on the described base upper surface also have venting hole on the base, keep the stopper slot bottom to communicate with outside atmosphere.
Above-mentioned rotary-type ultrasound electric machine stator friction layer is made auxiliary means, it is characterized in that the height of described carriage release lever upper limit position block is higher than the degree of depth of described base upper limit position groove.
Generally speaking, ultrasound electric machine friction materials of the present invention has superior wear resistance, suitable hardness, good characteristics such as output characteristic.Key is low-temperature curable, and straight forming can be made the ultrasound electric machine friction layer with both economical, simple method, is applicable to the making of dissimilar ultrasound electric machine friction layers, comprises the making of rotary-type ultrasound electric machine rotor and stator friction layer.The stator friction layer has higher wear resistance and better output characteristic with respect to the friction rotor layer.
Four, Figure of description:
Fig. 1 is the understructure synoptic diagram of auxiliary means of the present invention.Wherein Fig. 1 (a) is its sectional view; Fig. 1 (b) is its vertical view.
Fig. 2 is the carriage release lever structural representation of auxiliary means of the present invention.Wherein Fig. 2 (c) is its front view; Fig. 2 (d) is its vertical view.
Fig. 3 is the service performance curve of Φ 60 friction rotor layer traveling wave type ultrasonic motor.
Fig. 4 is the service performance curve of Φ 60 stator friction layer traveling wave type ultrasonic motors.
Label title among Fig. 1: 1-stopper slot, 2-charge groove, 3-friction materials, 4-base, 5-venting hole.
Label title among Fig. 2: the guide rail of 6-carriage release lever, 7-carriage release lever.
Designation among Fig. 3: Im-drive current; The Um-driving voltage; The Pm-power input to machine; P-motor output rating; The M-torque; The n-rotating speed; η-electrical efficiency.
Five, embodiment:
Embodiment 1: a kind of supersonic motor thermosetting resin base friction materials, its composition and mass percent: Resins, epoxy 47%, solidifying agent 33%, nano wearproof powder 15%, charcoal fiber 10% and copper powder 5%.
Utilize above-mentioned materials to make the method for ultrasound electric machine friction layer, may further comprise the steps:
1. at normal temperatures, blend epoxy resin-matrix ultrasound electric machine friction materials, stir according to mentioned component and mass ratio;
2. directly the material for preparing is sticked and coated on custom-designed as yet not on the rotor of moulding or the stator test specimen;
3. will glue the rotor that scribbles friction materials or stator under 30 ℃～45 ℃ of temperature, through ultrasonic vibrator electric shock, levelling and drive away gas in the material;
4. test specimen is placed in the baking box and roasted 30～180 minutes through 50～90 ℃;
5. the test specimen after will roasting is through the machining moulding.
The friction layer that the present invention makes has good abrasion resistance and output characteristic.Fig. 3, Fig. 4 are based on the service performance curve of Φ 60 traveling wave type ultrasonic motors of embodiment 1 making.Wherein, Fig. 3 is the service performance curve of Φ 60 friction rotor layer traveling wave type ultrasonic motor, and Fig. 4 is the service performance curve of Φ 60 stator friction layer traveling wave type ultrasonic motors.Table 1 is the test run(s) data of Φ 60 stator friction layer traveling wave type ultrasonic motors, and is corresponding with Fig. 4.Test shows, the motor that friction materials of the present invention is made, and its travelling speed and operational efficiency and have high stalling torque on higher level.
Nomenclature in Fig. 3, Fig. 4 and the table 1: Um-driving voltage; The Im-drive current; The Us-input voltage; The Pm-power input to machine promptly is defeated by the power of ultrasound electric machine from driving mechanism (high-frequency alternating current); F-surveys driving frequency; P-motor output rating; η-electrical efficiency, η=P/Pm; The n-rotating speed; The M-torque.
Table 1:
| Actual measurement driving frequency F:37KHZ | Nominal drive voltage U m:0.0Vrms | ||||||
| Specified input voltage Us:15.0V | Nominal drive current Im:0.5Arms | ||||||
| Im(Arms) | Um(Vrms) | Pm(W) | n(r/min) | M(N.m) | P(W) | η(％) | |
| No-load point | 0.143 | 58.6 | 12.5 | 156 | 0 | 0 | 0 |
| The maximum efficiency point | 0.303 | 120.1 | 16.8 | 76 | 0.739 | 5.9 | 34.6 |
| Maximum output point | 0.282 | 111.1 | 17.4 | 87 | 0.655 | 6.0 | 34.4 |
| The stall point | 0.420 | 177.3 | 3.2 | 0 | 1.063 | 0 | 0 |
Embodiment 2: a kind of thermosetting resin base ultrasound electric machine friction materials, its composition and mass percent: Resins, epoxy 38.2% and solidifying agent 26.8%, nano wearproof powder 12.5%, charcoal fiber 12.5% and copper powder 10%.Added the thermal diffusivity that copper powder has improved friction layer in the present embodiment.Similar in ultrasound electric machine friction layer making method and the embodiment 1.
Embodiment 3: a kind of thermosetting resin base ultrasound electric machine friction materials, its composition and mass percent: Resins, epoxy 38.2% and solidifying agent 26.8%, nano wearproof powder 5%, charcoal fiber 15%, cupric oxide 5% and tetrafluoroethylene 5%, copper powder 5%.Present embodiment has been added the hardness that tetrafluoroethylene has reduced material in embodiment 1, reduced the wearing and tearing to dual face.Similar in ultrasound electric machine friction layer making method and the embodiment 1.
Embodiment 4: a kind of thermosetting resin base ultrasound electric machine friction materials, its composition and mass percent: Resins, epoxy 35.3% and solidifying agent 24.7%, nano wearproof powder 7.5%, charcoal fiber 12.5%, cupric oxide 10%, tetrafluoroethylene 5% and graphite 5%.Present embodiment has been added graphite in embodiment 3, the material that adds graphite helps to form transfer film in operation, and it can reduce the wearing and tearing of surface of friction.Similar in ultrasound electric machine friction layer making method and the embodiment 1.
Embodiment 5: a kind of thermosetting resin base ultrasound electric machine friction materials, its composition and mass percent: Resins, epoxy 35.3% and solidifying agent 24.7%, nano wearproof powder 5%, charcoal fiber 12.5%, cupric oxide 10%, tetrafluoroethylene 5%, graphite 2.5% and paracril 5%.Present embodiment has been added paracril in embodiment 4, it has further reduced the hardness of friction layer.Similar in ultrasound electric machine friction layer making method and the embodiment 1.
Embodiment 6: a kind of thermosetting resin base ultrasound electric machine friction materials, its composition and mass percent: Resins, epoxy 35.3%～41.2% and solidifying agent 24.7%～28.8%, nano wearproof powder 5%～10% and carbon fiber 5%～10%; Tetrafluoroethylene 0%～5%, copper powder 0%～10%, graphite 2%～10%, paracril 0%～5% and mineral substance 0%～10%.Added mineral substance in the present embodiment, mineral substance is meant natural mineral and synthetic material, and it comprises lime carbonate, aluminum oxide, ferric oxide, silicon-dioxide, silicate (kaolin, mica, talcum powder, wollastonite, wilkinite etc.), silicon nitride, carborundum, Calcium Fluoride (Fluorspan), bortz powder, titanium dioxide.It can adjust the hardness of material, improves the output characteristic of the motor of material, and the wearing and tearing that reduce friction pair.Similar in ultrasound electric machine friction layer making method and the embodiment 1.
Embodiment 7: a kind of thermosetting resin base ultrasound electric machine friction materials, its composition and mass percent: thermosetting resin and solidifying agent 80%, nano wearproof powder 12.5%, charcoal fiber 12.5% and cupric oxide 5%.Thermosetting resin and solidifying agent not only can be that Resins, epoxy and its solidifying agent can also be one of following material or its mixture in the present embodiment: Resins, epoxy and solidifying agent thereof, resol and solidifying agent thereof, clothes urea formaldehyde and solidifying agent, unsaturated polyester and solidifying agent thereof, organosilicon and solidifying agent thereof, urethane and solidifying agent thereof, vibrin and solidifying agent thereof.As Resins, epoxy and polyamine (perhaps anhydrides, isocyanide acids) solidifying agent, resol and acid as curing agent (or thermofixation), urea-formaldehyde resin and acids solidifying agent, unsaturated polyester and unsaturated hydrocarbons (perhaps organo-peroxide, azo-compound, peroxide acyl class etc.), organosilicon thermofixation (perhaps amine complex compound, silicon-nitrogen compound etc.), urethane and polyvalent alcohol solidifying agent, vibrin and acid anhydride type curing agent (perhaps oxyamide class, isocyanates).Similar in ultrasound electric machine friction layer making method and the embodiment 1.
Embodiment 8: a kind of thermosetting resin base ultrasound electric machine friction materials, its composition and mass percent: resol 80%, nano wearproof powder 12.5%, charcoal fiber 12.5% and cupric oxide 5%.This embodiment is a base-material with resol, need not solidifying agent.Similar in ultrasound electric machine friction layer making method and the embodiment 1.
With according to illustrated in figures 1 and 2, ultrasound electric machine friction layer making auxiliary means of the present invention is described.This instrument is used for rotary-type ultrasound electric machine stator friction layer when making, and stickingly on stator is coated with friction materials, it is characterized in that this auxiliary means is made up of carriage release lever 6 and base 4.The main body of described carriage release lever 6 is unequal right cylinders of diameter up and down.Upper cylinder is used for the suit annular stator, and the moving of lower cylindrical body restriction stator, and as the guide rail 7 of carriage release lever.The main body of described base is that internal diameter does not wait annulus to form up and down.The internal diameter of its middle and upper part annulus is big, and equals the diameter of carriage release lever guide rail 7, and its surface has annular recesses as charge groove 2, is used to hold friction materials.The bottom annulus is as stopper slot 1, is used for to carriage release lever 6 spacingly, radially opens a venting hole 5 in the bottom of annulus, and venting hole 5 can keep at work that annulus is inner to communicate with outside atmosphere, is beneficial to carriage release lever 6 and moves.The height of the height of the lower cylindrical 7 of carriage release lever 6 and base 4 top annulus has reasonably coupling, and when it made the lower cylindrical of carriage release lever 6 drop on the annulus of base bottom, the distance of the flank of tooth of its stator and the groove surface of base met design requirement.Because varying in size of the rotary type travelling wave ultrasonic motor of different model, the size of required auxiliary means is different, and still, structure is identical, so in above-mentioned working diagram, the structure that only provides anchor clamps does not provide size.
Claims (5)
1, a kind of supersonic motor thermosetting resin base friction materials is characterized in that being made up of by following mass percent following composition:
Base-material: thermosetting resin 35%～80%;
Solidifying agent: 0%～34%;
Toughener: nano wearproof powder 5%～15%, carbon fiber 5%～15%;
Properties-correcting agent: cupric oxide 0%～10%, tetrafluoroethylene 0%～5%, copper powder 5%～10%, graphite 2%～10%, paracril 0%～5%, mineral substance 0%～10%.
2, supersonic motor thermosetting resin base friction materials according to claim 1 is characterized in that: described thermosetting resin is one of following material or its mixture: Resins, epoxy, resol, urea-formaldehyde resin, unsaturated polyester, organosilicon, urethane, vibrin, acrylic resin.
3, a kind of layer manufacturing method that rubs of supersonic motor thermosetting resin base friction materials is characterized in that may further comprise the steps:
(1), at normal temperatures, configure the thermosetting resin base frication material of glue shape, and stir;
(2), the friction materials glue is sticked and coated on custom-designed as yet not on the stator of moulding or the rotor test specimen;
(3), will glue the stator that scribbles friction materials or rotor under 30 ℃～45 ℃ of temperature, through ultrasonic vibrator electric shock, levelling and drive away gas in the material;
(4), test specimen is placed in the baking box through 50 ℃～90 ℃ barbecues 30～180 minutes;
(5), stator after will roasting or rotor test specimen are through the machining moulding.
4, a kind of layer manufacturing method auxiliary means that rubs of supersonic motor thermosetting resin base friction materials, when being used for rotary-type ultrasound electric machine stator friction layer and making, the sticking friction materials that is coated with on stator, it is characterized in that this auxiliary means is made up of carriage release lever (6) and base (4), and described carriage release lever (6) main body is a right cylinder, be used for the suit annular stator, its lower end has limited block (7), and as guide rail; Stopper slot (1) and a charge groove (2) that is used to hold friction materials of having a guide rail (7) that is used for carriage release lever to be complementary on the described base upper surface also have venting hole (5) on the base, keep the stopper slot bottom to communicate with outside atmosphere.
5, the layer manufacturing method auxiliary means that rubs of supersonic motor thermosetting resin base friction materials according to claim 4 is characterized in that the height of described carriage release lever upper limit position block (7) is higher than the degree of depth of described base upper limit position groove (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610040708 CN1850882A (en) | 2006-05-29 | 2006-05-29 | Supersonic motor thermosetting resin base friction material and friction layer manufacturing method and auxiliary tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610040708 CN1850882A (en) | 2006-05-29 | 2006-05-29 | Supersonic motor thermosetting resin base friction material and friction layer manufacturing method and auxiliary tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1850882A true CN1850882A (en) | 2006-10-25 |
Family
ID=37132384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610040708 Pending CN1850882A (en) | 2006-05-29 | 2006-05-29 | Supersonic motor thermosetting resin base friction material and friction layer manufacturing method and auxiliary tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1850882A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804716A (en) * | 2010-03-26 | 2010-08-18 | 长沙学院 | organic composite coating for impeller |
| CN101429297B (en) * | 2008-12-17 | 2011-09-07 | 黄山奔马集团有限公司 | Friction plate material and its use method |
| CN101277076B (en) * | 2008-05-16 | 2012-02-29 | 哈尔滨工业大学 | Method and tool for manufacturing ultrasonic motor thermoplasticity composite material friction plate |
| CN101309056B (en) * | 2008-05-30 | 2012-03-07 | 哈尔滨工业大学 | Preparing method of antisotropic friction plate of ultrasonic motor and special preparing apparatus thereof |
| CN102977849A (en) * | 2012-10-30 | 2013-03-20 | 十堰九鹏摩擦材料有限公司 | Synthetic abrasive material with ground dust as main body and friction material |
| CN103148138A (en) * | 2011-11-17 | 2013-06-12 | 舍弗勒技术股份两合公司 | Friction and/or sliding liner |
| CN103665771A (en) * | 2013-12-30 | 2014-03-26 | 石家庄中煤装备制造股份有限公司 | Wear-resistant composition, wear-resistant gear and manufacturing method of wear-resistant gear |
| CN103727203A (en) * | 2013-12-30 | 2014-04-16 | 石家庄中煤装备制造股份有限公司 | Composite gear and gear shaft |
| CN105175983A (en) * | 2015-07-24 | 2015-12-23 | 中山市伯伦克专用化学产品有限公司 | Thermosetting resin and preparation method therefor |
| CN105713569A (en) * | 2016-03-09 | 2016-06-29 | 苏州莱特复合材料有限公司 | Preparation method of fiber-doped resin based friction material |
| CN105924897A (en) * | 2016-07-11 | 2016-09-07 | 南通星球石墨设备有限公司 | High-strength wear-resisting pipe |
| CN111215301A (en) * | 2020-02-14 | 2020-06-02 | 山东富驰精密机械科技有限公司 | Method for spraying friction material of rotor of piezoelectric actuator and spraying tool |
| CN113354935A (en) * | 2021-05-19 | 2021-09-07 | 南京天诗新材料科技有限公司 | Friction pair formula based on phase-change wax, preparation method and device |
| CN117209910A (en) * | 2023-11-08 | 2023-12-12 | 陕西特种橡胶制品有限公司 | Shaft seal rubber for nuclear power main pump shaft and preparation method thereof |
-
2006
- 2006-05-29 CN CN 200610040708 patent/CN1850882A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101277076B (en) * | 2008-05-16 | 2012-02-29 | 哈尔滨工业大学 | Method and tool for manufacturing ultrasonic motor thermoplasticity composite material friction plate |
| CN101309056B (en) * | 2008-05-30 | 2012-03-07 | 哈尔滨工业大学 | Preparing method of antisotropic friction plate of ultrasonic motor and special preparing apparatus thereof |
| CN101429297B (en) * | 2008-12-17 | 2011-09-07 | 黄山奔马集团有限公司 | Friction plate material and its use method |
| CN101804716A (en) * | 2010-03-26 | 2010-08-18 | 长沙学院 | organic composite coating for impeller |
| CN101804716B (en) * | 2010-03-26 | 2012-07-25 | 长沙学院 | Organic composite coating for impeller |
| CN103148138A (en) * | 2011-11-17 | 2013-06-12 | 舍弗勒技术股份两合公司 | Friction and/or sliding liner |
| CN102977849A (en) * | 2012-10-30 | 2013-03-20 | 十堰九鹏摩擦材料有限公司 | Synthetic abrasive material with ground dust as main body and friction material |
| CN102977849B (en) * | 2012-10-30 | 2014-06-11 | 十堰九鹏摩擦材料有限公司 | Synthetic abrasive material with ground dust as main body and friction material |
| CN103727203A (en) * | 2013-12-30 | 2014-04-16 | 石家庄中煤装备制造股份有限公司 | Composite gear and gear shaft |
| CN103665771A (en) * | 2013-12-30 | 2014-03-26 | 石家庄中煤装备制造股份有限公司 | Wear-resistant composition, wear-resistant gear and manufacturing method of wear-resistant gear |
| CN103727203B (en) * | 2013-12-30 | 2016-07-06 | 冀凯装备制造股份有限公司 | compound gear and gear shaft |
| CN105175983A (en) * | 2015-07-24 | 2015-12-23 | 中山市伯伦克专用化学产品有限公司 | Thermosetting resin and preparation method therefor |
| CN105713569A (en) * | 2016-03-09 | 2016-06-29 | 苏州莱特复合材料有限公司 | Preparation method of fiber-doped resin based friction material |
| CN105924897A (en) * | 2016-07-11 | 2016-09-07 | 南通星球石墨设备有限公司 | High-strength wear-resisting pipe |
| CN111215301A (en) * | 2020-02-14 | 2020-06-02 | 山东富驰精密机械科技有限公司 | Method for spraying friction material of rotor of piezoelectric actuator and spraying tool |
| CN113354935A (en) * | 2021-05-19 | 2021-09-07 | 南京天诗新材料科技有限公司 | Friction pair formula based on phase-change wax, preparation method and device |
| CN117209910A (en) * | 2023-11-08 | 2023-12-12 | 陕西特种橡胶制品有限公司 | Shaft seal rubber for nuclear power main pump shaft and preparation method thereof |
| CN117209910B (en) * | 2023-11-08 | 2024-03-29 | 陕西特种橡胶制品有限公司 | Shaft seal rubber for nuclear power main pump shaft and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1850882A (en) | Supersonic motor thermosetting resin base friction material and friction layer manufacturing method and auxiliary tool | |
| CN104017364A (en) | Graphite-like carbon nitride/polyimide composite material and preparation method thereof | |
| CN101045638A (en) | Disk roll and base material for disk roll | |
| CN1743703A (en) | Electric execution device | |
| CN1667934A (en) | Composite ultrasonic micromotor with slotted metal square column piezoelectric sheet | |
| CN1796037A (en) | Method for manufacturing dedicated economical air valve for large-scale engine through flywheel type friction welding | |
| CN109750496A (en) | A kind of coated with silica carbon fiber and preparation method thereof, a kind of composite polyimide material of modification and its preparation method and application | |
| CN108964513A (en) | A method of improving ultrasound electric machine rotor CONTACT WITH FRICTION performance | |
| CN1061136C (en) | Kinetic energy regenerating device | |
| CN206245752U (en) | A kind of plug-in type chaotic vibration vibrator | |
| CN101040009A (en) | Thermosetting resin composite material and method for producing the same | |
| CN104734561B (en) | A kind of spring leaf formula parallel connection type supersonic motor | |
| CN1658341A (en) | High property magnetic rheological fluid using carbon nono tube as anti-sedimentation agent and its preparation method | |
| CN102754328A (en) | Oscillation actuator, and lens-barrel and camera provided with same | |
| CN109867956B (en) | Rare earth and graphene oxide synergistically modified polyimide nanocomposite, application and preparation method | |
| CN1566294A (en) | Preparation of antiwear antifriction reparation lubricating oil additive using nano materials | |
| CN101055786A (en) | Anisotropy ferrite magnet and motor | |
| CN101050795A (en) | Torque transfer device | |
| CN1850883A (en) | Supersonic motor carbon fiber modified PTFE base friction material, and its preparing method | |
| CN100341942C (en) | Method for preparing poly(p-phenylene benzobisoxazole)/polyimide composite material | |
| CN201712474U (en) | Automotive suspension energy recovery device | |
| CN211296596U (en) | Ultrasonic motor friction increasing structure based on surface texture | |
| CN2847685Y (en) | Grooved metal square colume piezoelectric sheet composite supersonic micro motor | |
| CN205350220U (en) | Reversing speed reducer | |
| CN110896288A (en) | Ultrasonic motor friction increasing structure based on surface texture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |