前苏联专利SU1577709A3 Rack-and-pinion transmission

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权利要求

类似技术

同族专利

引用文献

法律状态

优先权

专利摘要:
A rack-type drive for displacing a movable part longitudinally and horizontally relative to a stationary part has a longitudinally extending rack fixed on one of the parts which is formed above the rack with a longitudinal slot through which the rack is exposed upward and the other part is above the one part. A drive shaft rotatable about a horizontal and transverse upper axis on the other part is provided with a drive gear operatively engaged down through the slot with the rack. A pair of outer idler rollers generally below and longitudinally flanking the drive gear are rotatable about respective horizontal and transverse lower axes and a pair of inner idler rollers rotatable about the transverse axis on the drive shaft coaxially flank the drive gear and have outer peripheries lying relative to the axis radially outside the gear. A belt extending along and covering the slot to both longitudinal sides of the other part passes under the outer idler rollers and over the inner idler rollers in engagement with the peripheries thereof but out of contact with the drive gear.
公开号:SU1577709A3
申请号:SU864028551
申请日:1986-11-25
公开日:1990-07-07
发明作者:Циммер Эрнст
申请人:Кука Швейсанлаген Унд Роботер Гмбх (Фирма)；
IPC主号:

专利说明:

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The invention relates to mechanical engineering, namely, toothed-rack converters of rotational motion into translational motion, and can be used, for example, in robots and manipulators.
The purpose of the invention is to expand the operational capabilities of the transmission,
Fig, 1 shows the transmission, cross section; FIG. 2 is a section A-A in FIG. one; Fig, 3 is a section b-B in Fig, 2; in fig. 4 - section bb n FIG. 1; FIGS. 5 and 6 show a protective belt and its location on the shell, and of the longitudinal channel; Fig. 7 shows a ball straight guide; FIG. 8 shows a gear in which the drive gear interacts directly with the rack gear; Fig, 9 - section GG in Fig, 8.
The rack and pinion transmission contains two links that have the possibility of relative translation, one of which is made, for example, in the form of a fixed base 1, and the other in the form of a movable carriage 2. In the base 1 there is a longitudinal channel 3) in which a straight linear guide is installed 4. The longitudinal gear rack 5 is fixed on the guide 4, and the drive 6 is mounted on the carriage 2, on the shaft 7 of which the driving gear 8 is mounted, which engages with the rack 5 either directly or through the driven gear 9. A guide roller is installed on the shaft 7 for free rotation, consisting of two parts 10 and 11 located on both sides of the driving gear wheel 8, while the diameter of the parts 10 and 11 of the tension roller is larger than the diameter of the wheel 8, Two tensioning rollers 12 are mounted symmetrically on both sides of the o-ett shaft 7 on the carriage 2. The rollers 10-12 with a loop form a protective belt 13 covering the free portions 14 of the longitudinal channel 3 and the ends with tension fixed on the base 1,
Between the parts 10 and 11 of the tensioning roller and the driving gears 8 on the shaft 7, two identical rocker arms 15 are installed with the possibility of free rotation, and on the other ends of which the axis 16 of the driven gear 9 is mounted, the Rocker arm 15 is connected to each other by means of a guide studs 17. At one end of the axis 16 is made
Q n
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collar 18, and at the other end an eccentric 19, whose diameter is less than the diameter of the axis 16 and which is located in the groove 20, made in the support 21, rigidly connected to the carriage 2. At the same end of the axis 16, there is a lock nut 22 for fixing rocker 15 in the desired position.
Figs 1, 4, 7 and 9 show various structures of the rectilinear guide 4; Figs 1, 2 and 4 guide 4 are made in the form of a flat plate, the working surfaces 23 of which in the cross section have the shape of a trapezium, and on the support 21 In bearings 24, rollers 25 are installed, interacting with working surfaces 23 of guide 4. In this construction, the longitudinal channel 3 is formed by the surface of base 1, on which gear rack 5 is fixed, and by two shell 26, which facilitates the manufacture and assembly of the gear.
In order to increase the reliability of protection of the longitudinal, channel 3, the belt 1 3 can be made with a variable cross section (FIG. 5) and have sections 27 of a thin section, between which a section 28 of a larger section is located. In this case, the sections 27 of the belt 13 lie on the flat edges of the respective shells 26, Possible rectangular section of the belt 1 3. In this case, the guide bars 29 are fixed on the flat edges of the shells 26, between which the belt 13 is arranged (Fig. B),
The guide 4 can also be performed on the rolling elements (Fig. 7). In this case, separators 30 are installed on the support 21 on both sides, and the guide 4 is made of two parallel parts, one of which is displaced to sample the gap to the other using, for example, pressure screws 31, Balls or rollers 32 are installed in separators 30, The clamping belt 13 lies directly on the guide 4.
The drive wheel 8 may engage with the toothed rack 5 and directly, without the driven wheel 9 (Fig, 8 and 9). In this case, the tension rollers 12 are located closer to the guide rollers 10 and 11 than in the previous structures, which allows to reduce the covering loop and, accordingly, the total length of the protective belt 13,
However, in this case, the height of the toothed rack 5 is higher, therefore, in parts 10 and 1 I of the tensioning roller, annular grooves 33 are made, and flanging 34 are included in the longitudinal channel 3 edges of the shells 26, which enter into annular grooves 33,
Possible composite structure of the shaft 7 of the drive 6 (Fig, 9), when the shaft
7 is made of two parts 35 and 36, while part 35 is made hollow and
integrally with drive wheel 8, and the second part 36 of shaft 7 has a sleeve 37 fixed to it, designed for self-aligning connection of parts 35 and 36. Axis parts 35 and 36 of shaft 7 are installed in bearings 38 and 39, respectively. Such shaft design 7 can also be used if there is a driven gear 9 with rocker arms 15.
FIG. Figures 8 and 9 also show a variant of the guide 4 which is most suitable for heavy loaded gears.
In this case, the guide 4 is also made in the form of a plate, the working surfaces 23 of which have a rectangular profile, and on the support 21 on both sides there are lower 40, lateral 41 and upper 42 cylindrical rollers interacting with the working surfaces 23 of the guide 4. The adjustment of the gaps in this case can be done; for example, by making the axes of the rollers 40-42 eccentric and turning, or by any other known method,
Rack and pinion transmission works as follows.
The shaft 7, receiving rotation from the actuator 6, rotates the leading gear 8, which through the driven gear 9 (FIG. 1-4) or directly (FIGS. 8 and 9) engages with the gear rack 5. As a result, the carriage 2 moves along the guide 4, while the parts 10 and J1 of the guide roller and the tension rollers 12 run around the protective belt 13 all the time they maintain the loop formed by them from the belt 13 away from the gear wheel 8, thereby ensuring the free rotation of the latter and protecting moving parts of the transmission from contamination,
In order to improve the accuracy of the transfer when performing it with the driven gear 9, the axis 16 of which
ten
five
installed in the rocker arms 15, gaps in the gears are reduced to a minimum. To do this, release the nut 22 and rotate in the desired direction the axis 16 of the wheel 9. Since the eccentric 19 axis
16 is installed B groove 20 caliper 21, the axis 16, and with it the rocker arm
15 and the wheel 9 moves along an arc of a circle centered on the axis of the shaft 7, with the wheel 9 approaching or moving away from the rail 5. After the allowable gaps in the gearing have been received, the nut 22 is again tightened, and the rocker arms 15 by the flange 18 and the nut 22 are fixed in the desired position, pressing against the caliper 21
Ф ° о рм у л and inventions
0

权利要求:
Claims (2)
[1]
1, A gear-rack drive transmission comprising two links installed with the possibility of relative translational movement, a rectilinear pressure equal to 5 installed in a longitudinal channel which is made in one of the links fixed on a gear rail parallel to it mounted on the second link drive , a pinion gear mounted on its shaft, engaged with a rack, a guide roller coaxial with the drive wheel, two tension rollers mounted on the second link symmetrically on both sides of the axis rotating the guide roller guide members mounted on the second link, disposed within the longitudinal bore of the first link and adapted to cooperate with its rectilinear
guide belt and to protect the toothed rack, covering the rollers with the formation of a loop, covering the free sections of the longitudinal channel and with their ends attached to the tension on the first link, so that, in order to expand the operational capabilities, the guide roller is made according to the length of two identical parts, axially mounted with the possibility of free rotation on the drive shaft on both sides of the driving gear, and the diameter of the roller exceeds the diameter of the driving gear.
[2]
2. Transmission according to claim. Characterized in that it is provided with two identical rocker arms installed with the POSSIBILITY of free rotation
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FIG. 9

类似技术:

公开号 | 公开日 | 专利标题

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同族专利:

公开号 | 公开日

ES8701001A1|1986-11-16|

US4704913A|1987-11-10|

ES552416A0|1986-11-16|

CN86101603A|1986-10-15|

AU5511686A|1986-10-23|

AU579292B2|1988-11-17|

CA1251657A|1989-03-28|

JPS62502326A|1987-09-10|

CN1006137B|1989-12-20|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

US848578A|1906-03-29|1907-03-26|William A Thelin|Protector for planer-ways.|

US971146A|1910-01-03|1910-09-27|Marion Repp|Slot-guard for paper-trimming machines.|

US995972A|1911-03-29|1911-06-20|Smith & Winchester Mfg Company|Attachment for paper-cutting machines.|

US1679912A|1925-08-03|1928-08-07|Cold Spring Granite Company|Automatic slide cover|

US2741141A|1951-04-19|1956-04-10|Parkersburg Rig & Reel Co|Counterbalances|

US2760571A|1951-05-18|1956-08-28|West Virginia Pulp & Paper Co|Paper trimmer having automatic table slot closer|

US2881834A|1956-10-09|1959-04-14|E P Lawson Co Inc|Back gauge slot closing member|

DE1101096B|1958-03-05|1961-03-02|Wagner & Co Werkzeugmaschinenf|Cover for strip-shaped parts on machine tools, such as guide rails, feed racks, scales or the like.|

US3753375A|1971-11-29|1973-08-21|Trw Inc|Rack and pinion steering gear|

JPS5940602Y2|1976-06-30|1984-11-19|

DE2910373C2|1979-03-16|1984-02-23|Hamül Werkzeugfabrik Th. Kirschbaum KG, 8590 Marktredwitz|Drive device for backlash-free conversion of a rotary movement into a linear movement|

US4446751A|1981-02-18|1984-05-08|Andreasen Norman H|Kiln floor system|

DE3205143C2|1982-02-13|1984-02-09|Reinhard 7310 Plochingen Lipinski|Mechanical linear unit|

GB8812039D0|1988-05-20|1988-06-22|Riley M F|Cordless cartridge gun|

JP2811748B2|1989-05-17|1998-10-15|日本精工株式会社|Feed unit device|

IT1253911B|1991-12-12|1995-08-31|P E I S R L|PROTECTIVE STRUCTURE, IN PARTICULAR USABLE IN A MACHINE TOOL OR IN A SIMILAR OPERATING UNIT|

US5352167A|1993-06-08|1994-10-04|Ecm Motor Co.|Inclination drive mechanism for a treadmill|

US5623176A|1993-12-21|1997-04-22|Brandt, Jr.; Robert O.|High precision/low hysteresis linear actuator|

DE19532759B4|1995-09-05|2004-07-01|Rexroth Star Gmbh|Linear guide unit|

DE19857028A1|1998-12-10|2000-07-06|Rexroth Star Gmbh|Linear guide device|

US6786110B1|2000-04-13|2004-09-07|Clifford Broderick|Machinery slot cover|

JP4527415B2|2004-02-18|2010-08-18|ヤマザキマザック株式会社|Laser processing machine|

JP5014615B2|2005-10-31|2012-08-29|ヤマザキマザック株式会社|Laser processing machine dust path system|

DE102007018924B4|2007-04-21|2014-10-16|Strasser Maschinenbau Gmbh|linear axis|

CN104678996A|2013-11-29|2015-06-03|鸿富锦精密工业（深圳）有限公司|Single-shaft robot|

CN105467990A|2014-09-12|2016-04-06|鸿富锦精密工业（深圳）有限公司|Single-axis robot|

WO2016106327A1|2014-12-22|2016-06-30|Vermeer Manufacturing Company|Positionable carriage assembly|

CN106205882B|2016-08-31|2017-07-07|合肥神马科技集团有限公司|One discharge plate twists the isolating device of crawling traction type cable-former|

CN108528019A|2018-05-04|2018-09-14|陈锦瑞|A kind of golden machine of pressure|

CN112222427B|2020-10-05|2021-10-15|浙江宝恩电气科技有限公司|Numerical control double-end lathe|

法律状态:

优先权:

申请号 | 申请日 | 专利标题

EP85103597A|EP0170773B1|1984-06-05|1985-03-26|Rack and pinion drive for the generation of a relative motion between two machine parts guided relative to one another|

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