CN1296660A - Actuator having improved accuracy - Google Patents
Actuator having improved accuracy Download PDFInfo
- Publication number
- CN1296660A CN1296660A CN99804977A CN99804977A CN1296660A CN 1296660 A CN1296660 A CN 1296660A CN 99804977 A CN99804977 A CN 99804977A CN 99804977 A CN99804977 A CN 99804977A CN 1296660 A CN1296660 A CN 1296660A
- Authority
- CN
- China
- Prior art keywords
- bearing
- parts
- nut
- screw mechanism
- actuator
- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 238000005096 rolling process Methods 0.000 claims abstract description 27
- 238000005520 cutting process Methods 0.000 claims abstract description 21
- 230000004044 response Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 22
- 230000009467 reduction Effects 0.000 claims description 18
- 238000005516 engineering process Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000010791 quenching Methods 0.000 claims description 12
- 230000000171 quenching effect Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 2
- 229910001315 Tool steel Inorganic materials 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000005255 carburizing Methods 0.000 claims description 2
- 238000005242 forging Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 230000001012 protector Effects 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/24—Electric or magnetic using motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
- F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
- F16D2125/40—Screw-and-nut
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/44—Mechanical mechanisms transmitting rotation
- F16D2125/46—Rotating members in mutual engagement
- F16D2125/52—Rotating members in mutual engagement with non-parallel stationary axes, e.g. worm or bevel gears
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H25/2252—Planetary rollers between nut and screw
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
An actuator comprises a housing (1, 10), a motor, an actuating member and a screw mechanism providing a linear movement of the actuating member with respect to the housing (1, 10) in response to a rotational movement of the motor, said screw mechanism comprising a screw (5, 16) and a nut (1, 17) at least one of which is rotatably supported with respect to the housing (1, 10) by means of a rolling element bearing (2, 11), said rolling element bearing (2, 11) having an inner raceway (6) and an outer raceway, as well as rolling elements which are in rolling contact with said raceways. At least one of the components of the screw mechanism, e.g. the screw (5, 16), nut or rollers and/or at least a component of the bearing , e.g. the inner bearing ring or the outer bearing ring, comprises a surface part which is manufactured by means of a hard cutting operation, e.g. hard turning, hard milling, hard drilling, etc.
Description
The present invention relates to a kind of actuator, this actuator comprises a housing, a motor, and an actuation element and a screw mechanism, in response to rotatablely moving of motor, screw mechanism makes actuation element do linear movement with respect to frame.Described screw mechanism comprises a screw rod and a nut, in the two at least one can by a rolling element bearing with respect to housing by rotatably mounted, described rolling element bearing has an inside race and an outer race, and the rolling element that contacts with described seat ring rolling.
Such actuator widely known to.It can be used as different purposes, such as the caliper of a disc brake.This actuator comprises a plurality of parts with accurate machining surface, such as the screw thread of screw rod and nut, roller, bearing race or the like.Most of cost of this actuator spends on the process for machining.
People attempt thousand and one way, satisfy the requirement of precision on the one hand, on the other hand to reduce production costs.The present invention aims to provide and a kind ofly can satisfy above both actuator simultaneously.This purpose can realize like this, be at least one parts of screw mechanism such as screw rod, nut, perhaps at least one parts of roller and/or bearing such as inner bearing collar or outer collar bearing comprise a surface portion that processes by hard car, hard cutting operation such as mill firmly, hard lead.
Depend on the engagement on a plurality of surfaces of screw mechanism and bearing to a great extent in response to the accuracy of the displacement of the actuator of control signal.Nut and screw flight, between decisive role in this regard such as seat ring of roller between them and bearing.The accuracy of the relative position that these are surperficial is also very important.By hard cut, these surfaces can integral body be formed in screw rod or the nut, thereby intrinsic accuracy is provided, and it is not accumulated the influence of foozle, and the accumulation foozle is present in the assembling process of multicomponent structure.
Hard car (cutting) is a kind of single-point Cutting Process of machine work hardened steel parts.It is considered to the process for machining of a kind of alternative corase grind and correct grinding.Described hard car utilizes pottery or superabrasive tool to carry out.It is particularly suitable for not only can reducing production costs but also can satisfy suitable fineness, thereby only just is enough to obtain desired product by a production stage.
In addition, incorporate surface can be processed by a multiple spindle lathe easily, and this both can satisfy required precision, can take into account cost (boosting productivity) again.
Bearing can support screw rod directly or indirectly.In addition, the surface portion behind the hard car can be used for the radial support screw mechanism.And the surface portion behind the hard car also can be used for the axially mounting screw mechanism.
According to further possibility, this actuator can comprise a gear reduction that links to each other with screw mechanism.This gear reduction can comprise a surface portion that processes by hard car, hard cutting operation such as mill firmly, hard lead.
In addition, at least one parts of screw mechanism such as screw rod, nut or roller, and/or at least one parts of bearing such as bearing inner ring or outer race, and/or at least one parts of gear reduction can comprise a surface portion that forms by grinding.
And at least one parts of screw mechanism such as screw rod, nut or roller, and/or at least one parts of bearing such as bearing inner ring or outer race, and/or at least one parts of gear reduction can comprise a surface portion that processes by broaching.
By hard Vehicle Processing technology, can also produce a plurality of integral parts of the screw rod, nut etc. of actuator.For example, by this technology, can in interior ring and/or outer shroud, make the groove that holds seal or protector.In addition, nut or screw rod can be provided with transmission device by this way, tooth bar for example, and gear or tooth are to carry out direct or indirect engagement with power source.
Particularly, at least one parts can comprise a surface portion, screw thread for example, it can be by hard forging and/or roll firmly, the order manufacturing step of soft car, quenching and hard car obtains.
Perhaps, at least a portion of at least one parts, the acting surface of bearing race for example, can by as grind or apply surface modification technology such as diamond-like coating and handle.
In addition, at least a portion of at least one parts can obtain from the sintered powder material.
Furthermore, at least a portion of at least one parts can comprise through hardening or surface hardening material, and these materials are by oil, salt bath quenching technology or flash quenching technology or adopt the quenching technology for surfaces of coating technology to obtain.
In addition, at least a portion of at least one parts, for example bearing race can utilize polymer or flash quenching technology to carry out sensitive surface quenching (sclerosis) and handle.
The bearing of being discussed can be 4 contact ball bearings or roller bearing, for example needle bearing or tapered roller bearing.
Gear reduction can mesh with the screw rod or the nut of screw mechanism.
In this respect, screw rod or nut can comprise that one is that a mechanical reduction gear block bearing is established (adding) seat ring, and described mechanical reduction gear can mesh with a screw mechanism and a power source simultaneously.
According to first kind of possibility, nut can be by a rolling element bearing with respect to housing by rotatably mounted, it is one whole or mesh with the plane of reference of nut that the interior ring of this bearing and nut constitute.
According to second kind of possibility, screw rod can be by a rolling element bearing with respect to housing by rotatably mounted, it is one whole or mesh with the plane of reference of nut that the interior ring of this bearing and nut constitute.
The steel that several types is arranged is applicable to the parts that process by hard Cutting Process.These steel for example can be carburizing steel, forged steel, powder forming steel, steel rolling, cast steel and tool steel or the like.
The invention still further relates to the method for a kind of manufacturing according to the described actuator of aforementioned arbitrary claim, described actuator comprises a housing, a motor, an actuation element and a screw mechanism, in response to rotatablely moving of motor, screw mechanism makes actuation element do linear movement with respect to frame, described screw mechanism comprises a screw rod and a nut, in the two at least one can by a rolling element bearing with respect to housing by rotatably mounted, described rolling element bearing has an inside race and an outer race, and the rolling element that contacts with described seat ring rolling.
According to the present invention, this method comprises the surface portion of making at least one parts in the screw mechanism such as screw rod, nut, retainer, cam, roller or ball by hard car for example, hard cutting operation such as mill firmly, hard lead, and/or the step of the surface portion of at least one parts of bearing such as bearing inner ring or outer race.
Furthermore, this method can comprise the step of surface portion of making at least one parts of gear reduction by hard car for example, hard cutting operation such as mill firmly, hard lead.
In addition, this method can comprise the surface portion by at least one parts such as screw rod, nut, retainer, cam, roller or ball in the grinding manufacturing screw mechanism, and/or the surface portion of at least one parts of bearing such as bearing inner ring or outer race, and/or the step of the surface portion of at least one parts of gear reduction.
And, this method can comprise the surface portion by at least one parts such as screw rod, nut, retainer, cam, roller or ball in the broaching manufacturing screw mechanism, and/or the surface portion of at least one parts of bearing such as bearing inner ring or outer race, and/or the step of the surface portion of at least one parts of gear reduction, and/or make the step of the plane of reference of the interior ring of described bearing or a bearing inner ring at least one at screw rod or nut.
Described hard cutting operation can be undertaken by the cutting head with at least two cutting tips of working simultaneously.The use of the cutting tools of many cutting tips can realize rapid processing.
Below with reference to the embodiment shown in the accompanying drawing the present invention is described in further detail.
Fig. 1 shows the parts of first embodiment of screw jack actuator.
Fig. 2 shows the parts of first embodiment of screw jack actuator.
Actuator among Fig. 1 comprises a nut 1, it by bearing 2 in housing 3 by rotatably mounted.By roller 4, nut and screw rod 5 engagements.By rotation nut 1, screw rod 5 can carry out axial displacement.Roller is installed in the retainer 30 with known manner.
According to the present invention, some surfaces of this actuator form by hard cut.For example, the seat ring 6 with nut 1 all-in-one-piece bearing 2 processes by hard car (cutting).Screw flight 7 also can be processed by hard Cutting Process.
In addition, the internal thread of roller 4 and nut also can obtain in this way.
Nut can further comprise a seat ring 8 that forms by hard Vehicle Processing.This seat ring 8 can be used for rolling the shape bearing, for example with other parts of supporting actuator, as gear reduction.
Actuator according to Fig. 2 comprises a housing 10, and it has thrust bearing 11.Thrust bearing 11 is supporting a sleeve 12 that links to each other with gear 13, and gear 13 is driven by a gear drive such as helical gear 14.Gear 14 links to each other with a motor (not shown) by one 15.
Sleeve 12 links to each other with screw rod 16 conversely.Screw rod 16 can be rotated by means of gear 13,14, but can not move axially.
Along with the rotation of screw rod, nut 17 moves axially by roller 18.Nut 17 links to each other with piston 20 by intermediate sleeve 19 conversely.
Piston 20 has an outside axial notch 21, and it and housing 10 interior protuberances 22 mesh.Like this, piston 20 and nut 17 can move axially, but can not rotate.
A plurality of surfaces of actuator shown in Figure 2 obtain by hard cut.As actuator shown in Figure 1, the screw thread of roller 18 and screw rod 16, nut 17 can obtain by hard Vehicle Processing.The plane of reference 23 of the flange 24 of sleeve 12, this plane of reference 23 defines the position of bearing 11, also can obtain in this way.
Claims (32)
1. actuator, it comprises a housing (1,10), a motor, an actuation element and a screw mechanism, in response to rotatablely moving of motor, screw mechanism makes actuation element with respect to housing (1,10) do linear movement, described screw mechanism comprises a screw rod (5,16) and a nut (1,17), at least one can pass through rolling element bearing (2 in the two, 11) with respect to housing (1,10) by rotatably mounted, described rolling element bearing (2,11) have an inside race (6) and an outer race, and the rolling element that contacts with the seat ring rolling, it is characterized in that at least one parts of screw mechanism such as screw rod (5,16), at least one parts of nut or roller (5,18) and/or bearing such as bearing inner ring or outer race comprise that one passes through as hard car, mill firmly, the surface portion that hard cutting operation such as hard lead processes.
2. actuator according to claim 1 is characterized in that described surface portion is used for the radial support screw mechanism.
3. actuator according to claim 1 and 2 is characterized in that described surface portion is used for the axially mounting screw mechanism.
4. according to claim 1,2 or 3 described actuators, it is characterized in that it comprises a gear reduction that links to each other with screw mechanism, this reducing gear comprise one by as the surface portion that processes of hard car, hard cutting operation such as mill firmly, hard lead.
5. according to the described actuator of above-mentioned arbitrary claim, it is characterized in that, at least one parts of screw mechanism such as screw rod, nut or roller, and/or at least one parts of bearing such as bearing inner ring or outer race, and/or at least one parts of gear reduction, comprise a surface portion that forms by grinding.
6. according to the described actuator of above-mentioned arbitrary claim, it is characterized in that, at least one parts of screw mechanism such as screw rod, nut or roller, and/or at least one parts of bearing such as bearing inner ring or outer race, and/or at least one parts of gear reduction, comprise a surface portion that processes by broaching.
7. according to the described actuator of above-mentioned arbitrary claim, it is characterized in that, at least one parts comprises a surface portion, for example screw thread, seat ring, the plane of reference or tooth, and it is by hard forging and/or roll firmly, the order manufacturing step of soft car, quenching and hard car obtains.
8. according to the described actuator of above-mentioned arbitrary claim, it is characterized in that at least a portion of at least one parts such as the acting surface of bearing race, is carried out surface modification treatment by for example grinding or apply diamond-like coating.
9. according to the described actuator of above-mentioned arbitrary claim, it is characterized in that at least a portion of at least one parts is obtained by metal or nonmetallic materials or sintered powder material.
10. according to the described actuator of above-mentioned arbitrary claim, it is characterized in that, at least a portion of at least one parts comprises a through hardening or surface hardening material, and it is by oil, salt bath quenching technology or flash quenching technology or adopt the quenching technology for surfaces of coating technology to obtain.
11., it is characterized in that at least a portion of at least one parts such as bearing race, utilizes polymer or flash quenching technology to carry out the sensitive surface Quenching Treatment according to the described actuator of above-mentioned arbitrary claim.
12., it is characterized in that the inside race of described bearing or a plane of reference that is meshed with a bearing inner ring that comprises described inside race and nut or screw rod are integral according to the described actuator of above-mentioned arbitrary claim.
13. actuator according to claim 12 is characterized in that, described nut by a rolling element bearing with respect to housing (4) by rotatably mounted, the interior ring of described bearing is with nut is integral or mesh with the plane of reference of nut.
14. according to claim 12 or 13 described actuators, it is characterized in that, described screw rod by a rolling element bearing with respect to housing (4) by rotatably mounted, the interior ring of described bearing is with nut is integral or mesh with the plane of reference of nut.
15., it is characterized in that described bearing inner ring and/or outer shroud comprise a groove that is used to hold a seal or protector according to the described actuator of above-mentioned arbitrary claim.
16. according to the described actuator of above-mentioned arbitrary claim, it is characterized in that nut or screw rod can comprise a transmission device, keyway for example, gear or tooth are to carry out direct or indirect engagement with power source.
17., it is characterized in that described bearing is a ball bearing according to the described actuator of above-mentioned arbitrary claim, for example 4 contact ball bearings, or roller bearing, for example needle bearing, roller bearing or taper roll bearing.
18., it is characterized in that described screw mechanism drives with screw rod or nut meshed gears reducing gear by one according to the described actuator of above-mentioned arbitrary claim.
19., it is characterized in that nut or screw rod comprise that one is used for the additional seat ring of a mechanical reduction gear block bearing according to the described actuator of above-mentioned arbitrary claim, this deceleration deceleration device meshes with a screw mechanism and a power source simultaneously.
20., it is characterized in that described screw mechanism comprises a ball screw or a roller-screw according to the described actuator of above-mentioned arbitrary claim.
21., it is characterized in that at least one parts of screw mechanism and/or bearing are made by carburizing steel according to the described actuator of above-mentioned arbitrary claim.
22., it is characterized in that at least one parts of screw mechanism and/or bearing are made by forged steel according to the described actuator of above-mentioned arbitrary claim.
23., it is characterized in that at least one parts of screw mechanism and/or bearing are made by the powder forming steel according to the described actuator of above-mentioned arbitrary claim.
24., it is characterized in that at least one parts of screw mechanism and/or bearing are made by steel rolling according to the described actuator of above-mentioned arbitrary claim.
25., it is characterized in that at least one parts of screw mechanism and/or bearing are made by cast steel according to the described actuator of above-mentioned arbitrary claim.
26., it is characterized in that at least one parts of screw mechanism and/or bearing are made by tool steel according to the described actuator of above-mentioned arbitrary claim.
27. a manufacturing is according to the method for the described actuator of above-mentioned any one claim, described actuator comprises a housing, a motor, an actuation element and a screw mechanism, in response to rotatablely moving of motor, screw mechanism makes actuation element do linear movement with respect to frame.Described screw mechanism comprises a screw rod and a nut, in the two at least one can by a rolling element bearing with respect to housing by rotatably mounted, described rolling element bearing has an inside race and an outer race, and the rolling element that contacts with described seat ring rolling, it is characterized in that, it comprises by for example hard car, mill firmly, hard cutting operation such as hard lead is made at least one parts such as screw rod in the screw mechanism, nut, retainer, cam, the surface portion of roller or ball, and/or the step of the surface portion of at least one parts of bearing such as bearing inner ring or outer race.
28. the method for manufacturing one actuator as claimed in claim 4 according to claim 27, it is characterized in that it comprises the step of surface portion of making at least one parts of gear reduction by hard car for example, hard cutting operation such as mill firmly, hard lead.
29. according to claim 27 or 28 described methods, it is characterized in that, it comprises the surface portion by at least one parts such as screw rod, nut, retainer, cam, roller or ball in the grinding manufacturing screw mechanism, and/or the surface portion of at least one parts of bearing such as bearing inner ring or outer race, and/or the step of the surface portion of at least one parts of gear reduction.
30. according to any one described method among the claim 27-29, it is characterized in that, it comprises the surface portion by at least one parts such as screw rod, nut, retainer, cam, roller or ball in the broaching manufacturing screw mechanism, and/or the surface portion of at least one parts of bearing such as bearing inner ring or outer race, and/or the step of the surface portion of at least one parts of gear reduction.
31., it is characterized in that it is included in screw rod or the nut step of the plane of reference of an inside race of making described bearing or a bearing inner ring according to any one described method among the claim 27-30.
32., it is characterized in that described hard car operation is what to be undertaken by the cutting head with at least two cutting tips of working simultaneously according to any one described method among the claim 27-31.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1008593A NL1008593C2 (en) | 1998-03-13 | 1998-03-13 | Actuator with improved accuracy. |
| NL1008593 | 1998-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1296660A true CN1296660A (en) | 2001-05-23 |
Family
ID=19766743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99804977A Pending CN1296660A (en) | 1998-03-13 | 1999-03-12 | Actuator having improved accuracy |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1062721A1 (en) |
| JP (1) | JP2002506954A (en) |
| KR (1) | KR20010041863A (en) |
| CN (1) | CN1296660A (en) |
| AU (1) | AU2962999A (en) |
| NL (1) | NL1008593C2 (en) |
| WO (1) | WO1999046847A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19818157B4 (en) * | 1998-04-23 | 2012-05-16 | Robert Bosch Gmbh | Electromechanical wheel brake device |
| JP3555844B2 (en) | 1999-04-09 | 2004-08-18 | 三宅 正二郎 | Sliding member and manufacturing method thereof |
| US6969198B2 (en) | 2002-11-06 | 2005-11-29 | Nissan Motor Co., Ltd. | Low-friction sliding mechanism |
| JP4863152B2 (en) | 2003-07-31 | 2012-01-25 | 日産自動車株式会社 | gear |
| US7771821B2 (en) | 2003-08-21 | 2010-08-10 | Nissan Motor Co., Ltd. | Low-friction sliding member and low-friction sliding mechanism using same |
| JP6045372B2 (en) * | 2013-01-29 | 2016-12-14 | 株式会社スギノマシン | Electric wet atomizer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1546382A (en) * | 1976-06-16 | 1979-05-23 | Ti Matrix Ltd | Abrasive machining |
| US4804073A (en) * | 1980-12-23 | 1989-02-14 | Allied-Signal Inc. | Electrically operated disc brake with back-off protector |
| US5251510A (en) * | 1991-09-17 | 1993-10-12 | Dana Corporation | Ring gear fixture and machining process therefor |
| DE19511287B4 (en) * | 1994-07-21 | 2004-05-06 | Continental Teves Ag & Co. Ohg | Electromechanically actuated disc brake |
| DE4430113A1 (en) * | 1994-08-25 | 1996-02-29 | Berliner Werkzeugmasch | Tool machine for rotationally symmetrical work pieces |
| DE19546863A1 (en) * | 1994-12-21 | 1996-06-27 | Komet Stahlhalter Werkzeug | Finish-machining equipment for hardened work |
| ES2151976T3 (en) * | 1995-05-19 | 2001-01-16 | Continental Ag | BRAKE ACTUATOR FOR A VEHICLE ELECTRIC DRIVE BRAKE. |
-
1998
- 1998-03-13 NL NL1008593A patent/NL1008593C2/en not_active IP Right Cessation
-
1999
- 1999-03-12 KR KR1020007010157A patent/KR20010041863A/en not_active Application Discontinuation
- 1999-03-12 WO PCT/NL1999/000139 patent/WO1999046847A1/en not_active Application Discontinuation
- 1999-03-12 AU AU29629/99A patent/AU2962999A/en not_active Abandoned
- 1999-03-12 EP EP99910863A patent/EP1062721A1/en not_active Withdrawn
- 1999-03-12 CN CN99804977A patent/CN1296660A/en active Pending
- 1999-03-12 JP JP2000536127A patent/JP2002506954A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL1008593C2 (en) | 1999-09-14 |
| WO1999046847A1 (en) | 1999-09-16 |
| KR20010041863A (en) | 2001-05-25 |
| AU2962999A (en) | 1999-09-27 |
| EP1062721A1 (en) | 2000-12-27 |
| JP2002506954A (en) | 2002-03-05 |
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