CN104033557B - A kind of rectilinear motion reducing gear of spiral ball road - Google Patents
A kind of rectilinear motion reducing gear of spiral ball road Download PDFInfo
- Publication number
- CN104033557B CN104033557B CN201410288539.1A CN201410288539A CN104033557B CN 104033557 B CN104033557 B CN 104033557B CN 201410288539 A CN201410288539 A CN 201410288539A CN 104033557 B CN104033557 B CN 104033557B
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- China
- Prior art keywords
- ball
- rotating cylinder
- push rod
- rotaring tube
- interior rotating
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- 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.)
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Classifications
-
- 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
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
- F16H25/2214—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with elements for guiding the circulating balls
-
- 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
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
- F16H25/2233—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with cages or means to hold the balls in position
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Rolling Contact Bearings (AREA)
Abstract
A kind of rectilinear motion reducing gear of spiral ball road, between input push rod and the inside spin raceway of interior rotating cylinder, keep multiple balls with retainer, the rectilinear motion of input push rod is converted into rotatablely moving of interior rotating cylinder and outer rotaring tube, between the external spiral rollaway nest of outer rotaring tube and output push rod, also keep multiple balls with retainer, outer rotaring tube is converted into the straight line retarded motion of output push rod again by rotatablely moving, overcome the shortcoming that traditional ways of deceleration can only slow down to rotatablely moving, can slow down to rectilinear motion, can meet the demand of industrial equipment to straight line retarded motion, have simple in structure, deceleration force amplifier is effective, easy to maintenance, the advantages such as bearing capacity is strong.
Description
Technical field
The invention belongs to deceleration device technical field, be specifically related to a kind of rectilinear motion reductor of spiral ball roadStructure.
Background technology
Deceleration device plays coupling rotating speed and transmitting torque between prime mover and operating mechanism or executing agency, makesBe to reduce rotating speed by the object of deceleration device, increase output torque or power output.
The method that common deceleration device adopts gear reduction more or slows down with transmission at present. Mechanical reduction gear is oneKind by the individual components that is enclosed in gear drive in stiff case, worm-drive, gear-worm-drive etc. and forms, be commonly used forSpeed reduction gearing between prime mover and operating mechanism. And the side that adopts belt wheel and driving-belt to slow down with transmission decelerating device moreMethod, mates speed reducing ratio by the size that designs two pulley diameters.
But, gear reduction mode and with transmission ways of deceleration only can be used for the deceleration to rotatablely moving, can not be used forStraight-line deceleration. And a lot of equipment needs a kind of device that can realize deceleration force amplifier to straight-line motion mechanism. Adopt liquidPressing system can be realized the deceleration force amplifier to straight-line motion mechanism, but has the risk of hydraulic fluid leak, and heavy at a high speedUnder carrying, can produce creeping phenomenon, affect the normal work of equipment.
In order to meet the demand of some industrial equipment, develop a kind of side that realizes rectilinear motion deceleration force amplifier by frame for movementFormula is imperative.
Summary of the invention
In order to overcome above-mentioned shortcoming, the object of the present invention is to provide a kind of rectilinear motion reductor of spiral ball roadStructure, realizes straight-line deceleration force amplifier, have simple in structure, easy to maintenance, the advantage such as bearing capacity is strong.
To achieve these goals, the technical solution used in the present invention is:
A rectilinear motion reducing gear for spiral ball road, comprises urceolus 4, rolling bearing 3 be arranged on urceolus 4 afterEnd is inner, and rear end cap 7 is arranged on the rear end of urceolus 4, and the first linear roller bearing 6 is arranged on the front end of urceolus 4, output push rod 5Be arranged on the first linear roller bearing 6, baffle plate 13 is arranged on the rear end of output push rod 5,
The rear end of interior rotating cylinder 9 is arranged on rolling bearing 3, and outer rotaring tube 10 is fixed on interior rotating cylinder 9, makes outer rotaring tube 10Synchronously rotate with interior rotating cylinder 9, but can not move axially, outer rotaring tube 10 outer walls are provided with external spiral rollaway nest 14, on interior rotating cylinder 9 inwallsBe provided with inside spin raceway 8, external spiral rollaway nest 14 is identical with the hand of spiral of inside spin raceway 8, and retainer is by pluralOne ball 12 remains between the external spiral rollaway nest 14 on inwall and the outer rotaring tube 10 of exporting push rod 5, makes outer rotaring tube 10 in rotationTime, the first ball 12 can only roll along the external spiral rollaway nest 14 on outer rotaring tube 10,
The second linear roller bearing 2 is arranged on rear end cap 7, and input push rod 1 is arranged on the second linear roller bearing 2,Retainer remains on plural the second ball 11 between the inside spin raceway 8 on input push rod 1 and interior rotating cylinder 9 inwalls,When making to input push rod 1 and promoting forward, the second ball 11 can only roll along the inside spin raceway 8 on interior rotating cylinder 9.
In order to improve bearing capacity, on outer rotaring tube 10 outer walls, be provided with plural external spiral rollaway nest 14, and by keepingFrame remains on the first ball 12 between the plural external spiral rollaway nest 14 on inwall and the outer rotaring tube 10 of exporting push rod 5,On interior rotating cylinder 9 inwalls, be provided with plural inside spin raceway 8, and by retainer, the second ball 11 remained on to input push rod1 and interior rotating cylinder 9 inwalls on plural inside spin raceway 8 between.
Described inside spin raceway 8 and external spiral rollaway nest 14 adopt the helix of slope variation or lead change, nowHelix become a diversified curve, its speed reducing ratio will not be a steady state value in motion process like this, meet specialThe demand of different equipment to the speed reducing ratio changing in motion process.
The retarding method of the rectilinear motion reducing gear of described a kind of spiral ball road is: when inputting push rod 1 forwardWhile pushing, the second ball 11 will travel forward simultaneously, but because it can only roll along the inside spin raceway 8 on interior rotating cylinder 9, and theTwo balls 11 can not rotate along the axis of input push rod 1, and therefore plural the second ball 11 will make inside spin raceway 8 turnMoving, thus interior rotating cylinder 9 is rotated, and in the time that interior rotating cylinder 9 rotates, outer rotaring tube 10 is synchronous rotary, rolls due to plural firstPearl 12 is maintained between the external spiral rollaway nest 14 on inwall and the outer rotaring tube 10 of exporting push rod 5, and the first ball 12 can only edgeExternal spiral rollaway nest 14 on outer rotaring tube 10 rolls, and the outer rotaring tube 10 of rotation will drive plural the first ball 12 along external spiralRaceway 14 rolls forward, releases thereby will export push rod 5. The speed reducing ratio of retarding method depend on inside spin raceway 8 helical pitch andThe ratio of the helical pitch of external spiral rollaway nest 14, a moving point rotates a circle along spiral rolling track, and its height rising is vertically called helical pitch,That is:
Interior rotating cylinder 9 and outer rotaring tube 10 are dismantled and are assembled with demand, therefore to have different spiral rolling track helical pitches inRotating cylinder 9 and outer rotaring tube 10 are arranged in pairs or groups. By configuring the helical pitch of the inside spin raceway 8 on the outer rotaring tube 10 on interior rotating cylinder 9 with outwardThe ratio of the helical pitch of spiral rolling track 14, realizes different speed reducing ratio.
The present invention has the following advantages:
One, the present invention has overcome the shortcoming that traditional ways of deceleration can only slow down to rotatablely moving, and has created a kind of spiral shellRevolve the rectilinear motion ways of deceleration of ball road, can carry out deceleration force amplifier to rectilinear motion, can meet industrial equipment to directlyThe demand of line retarded motion.
Two, the present invention is simple in structure, easy to maintenance, and bearing capacity is strong.
Brief description of the drawings
Fig. 1 is the structure cutaway view of outer rotaring tube in the present invention.
Fig. 2 is structure cutaway view of the present invention.
Fig. 3 is the structure cutaway view of the follow-on interior outer rotaring tube of the present invention.
Fig. 4 is the follow-on structure cutaway view of the present invention.
Fig. 5 is that the present invention becomes the spiral rolling track schematic diagram that speed reducing ratio is slowed down, and wherein (a) is for turning inside and outside the deceleration of change speed reducing ratioThe cutaway view of cylinder; Wherein (b) is the partial sectional view of the interior outer rotaring tube of change speed reducing ratio deceleration.
Fig. 6 is interior rotating cylinder and the outer rotaring tube ios dhcp sample configuration IOS DHCP figure of the different spiral rolling track helical pitches of the present invention, (a) on rotating cylinderThe helical pitch of inside spin raceway is the twice of the helical pitch of the external spiral rollaway nest on outer rotaring tube in (b); (a) inside spin on rotating cylinderThe helical pitch of raceway is 1.5 times of helical pitch of the external spiral rollaway nest on outer rotaring tube in (c).
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
As depicted in figs. 1 and 2, a kind of rectilinear motion reducing gear of spiral ball road, comprises urceolus 4, rolling bearing 3The inside, rear end that is arranged on urceolus 4, rear end cap 7 is arranged on the rear end of urceolus 4, and first linear roller bearing 6 is arranged on urceolus 4Front end, output push rod 5 is arranged on the first linear roller bearing 6, and baffle plate 13 is arranged on the rear end of output push rod 5,
The rear end of interior rotating cylinder 9 is arranged on rolling bearing 3, and outer rotaring tube 10 is fixed on interior rotating cylinder 9, makes outer rotaring tube 10Synchronously rotate with interior rotating cylinder 9, but can not move axially, outer rotaring tube 10 outer walls are provided with external spiral rollaway nest 14, on interior rotating cylinder 9 inwallsBe provided with inside spin raceway 8, external spiral rollaway nest 14 is identical with the hand of spiral of inside spin raceway 8, and retainer is by pluralOne ball 12 remains between the external spiral rollaway nest 14 on inwall and the outer rotaring tube 10 of exporting push rod 5, makes outer rotaring tube 10 in rotationTime, the first ball 12 can only roll along the external spiral rollaway nest 14 on outer rotaring tube 10,
The second linear roller bearing 2 is arranged on rear end cap 7, and input push rod 1 is arranged on the second linear roller bearing 2,Retainer remains on plural the second ball 11 between the inside spin raceway 8 on input push rod 1 and interior rotating cylinder 9 inwalls,When making to input push rod 1 and promoting forward, the second ball 11 can only roll along the inside spin raceway 8 on interior rotating cylinder 9.
As shown in Figure 3 and Figure 4, in order to improve bearing capacity, on outer rotaring tube 10 outer walls, be provided with plural external spiralRaceway 14, and by retainer, the first ball 12 is remained on outside plural on the output inwall of push rod 5 and outer rotaring tube 10Between spiral rolling track 14, on interior rotating cylinder 9 inwalls, be provided with plural inside spin raceway 8, and by retainer by the second ballBetween the 11 plural inside spin raceways 8 that remain on input push rod 1 and interior rotating cylinder 9 inwalls.
As shown in Figure 5, described inside spin raceway 8 and external spiral rollaway nest 14 adopt the spiral shell of slope variation or lead changeSpin line, helix now becomes a diversified curve, like this its speed reducing ratio in motion process, will not be one constantValue, meets the demand of special installation to the speed reducing ratio changing in motion process.
The retarding method of the rectilinear motion reducing gear of described a kind of spiral ball road is: when inputting push rod 1 forwardWhile pushing, the second ball 11 will travel forward simultaneously, but because it can only roll along the inside spin raceway 8 on interior rotating cylinder 9, and theTwo balls 11 can not rotate along the axis of input push rod 1, and therefore plural the second ball 11 will make inside spin raceway 8 turnMoving, thus interior rotating cylinder 9 is rotated, and in the time that interior rotating cylinder 9 rotates, outer rotaring tube 10 is synchronous rotary, rolls due to plural firstPearl 12 is maintained between the external spiral rollaway nest 14 on inwall and the outer rotaring tube 10 of exporting push rod 5, and the first ball 12 can only edgeExternal spiral rollaway nest 14 on outer rotaring tube 10 rolls, and the outer rotaring tube 10 of rotation will drive plural the first ball 12 along external spiralRaceway 14 rolls forward, releases thereby will export push rod 5. The speed reducing ratio of retarding method depend on inside spin raceway 8 helical pitch andThe ratio of the helical pitch of external spiral rollaway nest 14, a moving point rotates a circle along spiral rolling track, and its height rising is vertically called helical pitch,That is:
Taking Fig. 6 as example, the helical pitch of the inside spin raceway in 6 (a) on interior rotating cylinder is that in 6 (b), the external spiral on outer rotaring tube rollsThe twice of the helical pitch in road, its speed reducing ratio is 2:1; The helical pitch of the inside spin raceway in 6 (a) on rotating cylinder is outer rotaring tube in 6 (c)On 1.5 times of helical pitch of external spiral rollaway nest, its speed reducing ratio is 3:2.
Interior rotating cylinder 9 and outer rotaring tube 10 are dismantled and are assembled with demand, therefore to have different spiral rolling track helical pitches inRotating cylinder 9 and outer rotaring tube 10 are arranged in pairs or groups. By configuring the helical pitch of the inside spin raceway 8 on the outer rotaring tube 10 on interior rotating cylinder 9 with outwardThe ratio of the helical pitch of spiral rolling track 14, realizes different speed reducing ratio.
Claims (4)
1. a rectilinear motion reducing gear for spiral ball road, comprises urceolus (4), it is characterized in that: rolling bearing (3) peaceBe contained in the inside, rear end of urceolus (4), rear end cap (7) is arranged on the rear end of urceolus (4), and the first linear roller bearing (6) is arranged onThe front end of urceolus (4), it is upper that output push rod (5) is arranged on the first linear roller bearing (6), and baffle plate (13) is arranged on output push rod(5) rear end,
It is upper that the rear end of interior rotating cylinder (9) is arranged on rolling bearing (3), and it is upper that outer rotaring tube (10) is fixed on interior rotating cylinder (9), makes outer turningCylinder (10) and interior rotating cylinder (9) synchronously rotate, but can not move axially, and outer rotaring tube (10) outer wall is provided with external spiral rollaway nest (14),Interior rotating cylinder (9) inwall is provided with inside spin raceway (8), and external spiral rollaway nest (14) is identical with the hand of spiral of inside spin raceway (8),The external spiral that retainer remains on plural the first ball (12) on inwall and the outer rotaring tube (10) of exporting push rod (5) rollsBetween road (14), make outer rotaring tube (10) when rotated, the first ball (12) can only be along the external spiral rollaway nest on outer rotaring tube (10)(14) roll,
It is upper that the second linear roller bearing (2) is arranged on rear end cap (7), and input push rod (1) is arranged on the second linear roller bearing (2)Upper, the inside spin that retainer remains on plural the second ball (11) on input push rod (1) and interior rotating cylinder (9) inwall rollsBetween road (8), when making to input push rod (1) and promoting forward, the second ball (11) can only be along the inside spin raceway on interior rotating cylinder (9)(8) roll.
2. the rectilinear motion reducing gear of a kind of spiral ball road according to claim 1, is characterized in that: turn outsideCylinder (10) outer wall be provided with plural external spiral rollaway nest (14), and by retainer by the first ball (12) remain on output push awayBetween plural external spiral rollaway nest (14) on the inwall of bar (5) and outer rotaring tube (10), on interior rotating cylinder (9) inwall, be provided withPlural inside spin raceway (8), and by retainer, the second ball (11) is remained on to input push rod (1) and interior rotating cylinder (9)Between plural inside spin raceway (8) on inwall.
3. the rectilinear motion reducing gear of a kind of spiral ball road according to claim 1, is characterized in that: describedInside spin raceway (8) and external spiral rollaway nest (14) adopt the helix of slope variation or lead change, and helix now becomesBe a diversified curve, its speed reducing ratio will not be a steady state value in motion process like this, meet special installation to fortuneThe demand of the speed reducing ratio changing in moving process.
4. the rectilinear motion reducing gear of a kind of spiral ball road according to claim 1, is characterized in that deceleration sideMethod is: in the time that input push rod (1) is pushed forward into, the second ball (11) will travel forward simultaneously, but because it can only be along interior rotating cylinder(9) inside spin raceway (8) on rolls, and the second ball (11) can not rotate along the axis of input push rod (1), therefore two withOn the second ball (11) will make inside spin raceway (8) rotate, thereby make interior rotating cylinder (9) rotation, in the time that interior rotating cylinder (9) rotates,Outer rotaring tube (10) is by synchronous rotary, because plural the first ball (12) is maintained at the inwall of output push rod (5) with outwardBetween external spiral rollaway nest (14) on rotating cylinder (10), and the first ball (12) can only be along the external spiral rollaway nest on outer rotaring tube (10)(14) roll, the outer rotaring tube (10) of rotation will drive plural the first ball (12) to roll forward along external spiral rollaway nest (14)Moving, to release thereby will export push rod (5), the speed reducing ratio of retarding method depends on that helical pitch and the external spiral of inside spin raceway (8) rollThe ratio of the helical pitch in road (14), a moving point rotates a circle along spiral rolling track, and its height rising is vertically called helical pitch, that is:
Interior rotating cylinder (9) and outer rotaring tube (10) are dismantled and are assembled with demand, therefore to have different spiral rolling track helical pitches inRotating cylinder (9) and outer rotaring tube (10) are arranged in pairs or groups, by configuring the inside spin raceway (8) on the outer rotaring tube (10) on interior rotating cylinder (9)Helical pitch and the ratio of the helical pitch of external spiral rollaway nest (14), realize different speed reducing ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288539.1A CN104033557B (en) | 2014-06-25 | 2014-06-25 | A kind of rectilinear motion reducing gear of spiral ball road |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288539.1A CN104033557B (en) | 2014-06-25 | 2014-06-25 | A kind of rectilinear motion reducing gear of spiral ball road |
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| Publication Number | Publication Date |
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| CN104033557A CN104033557A (en) | 2014-09-10 |
| CN104033557B true CN104033557B (en) | 2016-05-04 |
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| CN201410288539.1A Expired - Fee Related CN104033557B (en) | 2014-06-25 | 2014-06-25 | A kind of rectilinear motion reducing gear of spiral ball road |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105119419A (en) * | 2015-09-25 | 2015-12-02 | 北京万阳天力新能源科技有限公司 | Open type electric push rod |
| CN106838172A (en) * | 2017-04-10 | 2017-06-13 | 长江大学 | A kind of mud motor spiral steel ball reducer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2003712A6 (en) * | 1987-04-29 | 1988-11-01 | Waybol Sa | A lead screw with balls recirculating by deflector which has half-spherical supports with an undulating-spheroidal movement for the self-alignment of the channel mouths of the nut-deflector unit. |
| TW384362B (en) * | 1996-09-17 | 2000-03-11 | Thk Co Ltd | Ball connecting body, and linear guide device and ball screw device utilizing the ball connecting body |
| KR100373570B1 (en) * | 1997-07-31 | 2003-02-26 | 티에치케이 가부시끼가이샤 | Ball screw device |
| US20060169079A1 (en) * | 2005-02-02 | 2006-08-03 | Mao-Tu Lee | Muffling structure of high-speed ball screw |
| CN101929533B (en) * | 2010-09-07 | 2012-05-23 | 西安交通大学 | High-speed and low-noise precise ball screw pair |
| CN203176285U (en) * | 2013-04-02 | 2013-09-04 | 第一传动科技股份有限公司 | Linear transmission device provided with double screws |
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Granted publication date: 20160504 Termination date: 20190625 |