CN104033557A - Rectilinear motion retarding mechanism with spiral ball raceways - Google Patents
Rectilinear motion retarding mechanism with spiral ball raceways Download PDFInfo
- Publication number
- CN104033557A CN104033557A CN201410288539.1A CN201410288539A CN104033557A CN 104033557 A CN104033557 A CN 104033557A CN 201410288539 A CN201410288539 A CN 201410288539A CN 104033557 A CN104033557 A CN 104033557A
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- CN
- China
- Prior art keywords
- spiral
- ball
- push rod
- rotating cylinder
- rotaring tube
- 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.)
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Classifications
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- 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
Disclosed is a rectilinear motion retarding mechanism with spiral ball raceways. Multiple balls are retained between an input push rod and inner spiral raceways of an inner drum via retainers, rectilinear motion of the input push rod is converted into rotational motion of the inner drum and an outer drum, multiple balls are retained between outer spiral raceways of the outer drum and an output push rod via retainers, and rotational motion of the outer drum is converted into rectilinear retarding motion of the output push rod. The defect that a traditional retarding method can only retard the rotational motion is overcome, the rectilinear motion can be retarded, the requirement of industrial equipment on rectilinear retarding motion can be met, and the rectilinear motion retarding mechanism has the advantages of simple structure, good retarding and reinforcing effect, convenience in maintenance, high bearing capacity and the like.
Description
Technical field
The invention belongs to speed reducer technical field, be specifically related to a kind of straight line motion reducing gear of spiral ball road.
Background technique
Speed reducer plays coupling rotating speed and transmitting torque between prime mover and operation mechanism or actuator, and the object that uses speed reducer is to reduce rotating speed, increases output torque or ouput force.
The method that common speed reducer adopts gear reduction more or slows down with transmission at present.Gear reducer is a kind of individual components by being enclosed in gear transmission in stiff case, worm drive, gear-worm drive etc. and forming, and is commonly used for the speed reduction gearing between prime mover and operation mechanism.And the method that adopts belt wheel and driving belt to slow down with transmission decelerating device is mated reduction speed ratio by the size that designs two pulley diameters more.
But, gear reduction mode and with transmission ways of deceleration only can be used for the deceleration to rotatablely moving, can not be used for straight-line deceleration.And a lot of equipment needs a kind of device that can realize deceleration force amplifier to straight-line motion mechanism.Adopt hydraulic system can realize the deceleration force amplifier to straight-line motion mechanism, but have the risk of hydraulic fluid leak, and can produce creeping phenomenon under high-speed overload, affect the normal work of equipment.
In order to meet the demand of some industry equipment, develop that a kind of to realize the mode of straight line motion deceleration force amplifier by mechanical structure imperative.
Summary of the invention
In order to overcome above-mentioned shortcoming, the object of the present invention is to provide a kind of straight line motion reducing gear of spiral ball road, realize 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 kind of straight line motion reducing gear of spiral ball road, comprise urceolus 4, rolling bearing 3 is arranged on the inside, rear end of urceolus 4, rear end cover 7 is arranged on the rear end of urceolus 4, the first linear roller bearing 6 is arranged on the front end of urceolus 4, 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, outer rotaring tube 10 is fixed on interior rotating cylinder 9, outer rotaring tube 10 and interior rotating cylinder 9 are synchronously rotated, but can not move axially, outer rotaring tube 10 outer walls are provided with external spiral rollaway nest 14, interior rotating cylinder 9 inwalls are provided with internal spiral raceway 8, external spiral rollaway nest 14 is identical with the Hand of spiral of internal spiral raceway 8, retainer remains on plural the first ball 12 between the external spiral rollaway nest 14 on inwall and the outer rotaring tube 10 of exporting push rod 5, make outer rotaring tube 10 when rotated, 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 cover 7, input push rod 1 is arranged on the second linear roller bearing 2, retainer remains on plural the second ball 11 between the internal spiral 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 internal spiral 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 the first ball 12 is remained between the plural external spiral rollaway nest 14 on inwall and the outer rotaring tube 10 of exporting push rod 5 by retainer, on interior rotating cylinder 9 inwalls, be provided with plural internal spiral raceway 8, and by retainer, the second ball 11 remained between the plural internal spiral raceway 8 on input push rod 1 and interior rotating cylinder 9 inwalls.
Described internal spiral raceway 8 and external spiral rollaway nest 14 adopt the helix of slope variation or lead change, helix now becomes a diversified curve, its reduction speed ratio will not be a steady state value in movement process like this, meet the demand of special equipment to the reduction speed ratio changing in movement process.
The retarding method of the straight line motion reducing gear of described a kind of spiral ball road 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 roll along the internal spiral raceway 8 on interior rotating cylinder 9, and the second ball 11 can not rotate along the axis of input push rod 1, therefore plural the second ball 11 will make internal spiral raceway 8 rotate, thereby interior rotating cylinder 9 is rotated, 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 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 roll along the external spiral rollaway nest 14 on outer rotaring tube 10, the outer rotaring tube 10 rotating will drive plural the first ball 12 to roll forward along external spiral rollaway nest 14, thereby will export push rod 5 releases.The reduction speed ratio of retarding method depends on the ratio of the helical pitch of internal spiral raceway 8 and the helical pitch of external spiral rollaway nest 14, and 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 interior rotating cylinder 9 and the outer rotaring tube 10 with different spiral rolling track helical pitches are arranged in pairs or groups.By configuring the ratio of the helical pitch of the internal spiral raceway 8 on the outer rotaring tube 10 on interior rotating cylinder 9 and the helical pitch of external spiral rollaway nest 14, realize different reduction speed 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, create a kind of straight line motion ways of deceleration of spiral ball road, can carry out deceleration force amplifier to straight line motion, can meet the demand of industry equipment to straight 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 sectional view of outer rotaring tube in the present invention.
Fig. 2 is structure sectional view of the present invention.
Fig. 3 is the structure sectional view of the follow-on interior outer rotaring tube of the present invention.
Fig. 4 is the follow-on structure sectional view of the present invention.
Fig. 5 is that the present invention becomes the spiral rolling track schematic diagram that reduction speed ratio is slowed down, and wherein (a) is the sectional view of the interior outer rotaring tube of change reduction speed ratio deceleration; Wherein (b) is the partial sectional view of the interior outer rotaring tube of change reduction speed 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) in the helical pitch of internal spiral raceway on rotating cylinder be the twice of the helical pitch of the external spiral rollaway nest on (b) middle outer rotaring tube; (a) helical pitch of the internal spiral raceway on rotating cylinder be 1.5 times of helical pitch of the external spiral rollaway nest on (c) middle outer rotaring tube.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As depicted in figs. 1 and 2, a kind of straight line motion reducing gear of spiral ball road, comprise urceolus 4, rolling bearing 3 is arranged on the inside, rear end of urceolus 4, rear end cover 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, and output push rod 5 is 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, outer rotaring tube 10 is fixed on interior rotating cylinder 9, outer rotaring tube 10 and interior rotating cylinder 9 are synchronously rotated, but can not move axially, outer rotaring tube 10 outer walls are provided with external spiral rollaway nest 14, interior rotating cylinder 9 inwalls are provided with internal spiral raceway 8, external spiral rollaway nest 14 is identical with the Hand of spiral of internal spiral raceway 8, retainer remains on plural the first ball 12 between the external spiral rollaway nest 14 on inwall and the outer rotaring tube 10 of exporting push rod 5, make outer rotaring tube 10 when rotated, 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 cover 7, input push rod 1 is arranged on the second linear roller bearing 2, retainer remains on plural the second ball 11 between the internal spiral 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 internal spiral 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 spiral rollaway nest 14, and the first ball 12 is remained between the plural external spiral rollaway nest 14 on inwall and the outer rotaring tube 10 of exporting push rod 5 by retainer, on interior rotating cylinder 9 inwalls, be provided with plural internal spiral raceway 8, and by retainer, the second ball 11 remained between the plural internal spiral raceway 8 on input push rod 1 and interior rotating cylinder 9 inwalls.
As shown in Figure 5, described internal spiral raceway 8 and external spiral rollaway nest 14 adopt the helix of slope variation or lead change, helix now becomes a diversified curve, its reduction speed ratio will not be a steady state value in movement process like this, meet the demand of special equipment to the reduction speed ratio changing in movement process.
The retarding method of the straight line motion reducing gear of described a kind of spiral ball road 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 roll along the internal spiral raceway 8 on interior rotating cylinder 9, and the second ball 11 can not rotate along the axis of input push rod 1, therefore plural the second ball 11 will make internal spiral raceway 8 rotate, thereby interior rotating cylinder 9 is rotated, 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 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 roll along the external spiral rollaway nest 14 on outer rotaring tube 10, the outer rotaring tube 10 rotating will drive plural the first ball 12 to roll forward along external spiral rollaway nest 14, thereby will export push rod 5 releases.The reduction speed ratio of retarding method depends on the ratio of the helical pitch of internal spiral raceway 8 and the helical pitch of external spiral rollaway nest 14, and 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 internal spiral raceway in 6 (a) on interior rotating cylinder is the twice of the helical pitch of the external spiral rollaway nest on outer rotaring tube in 6 (b), and its reduction speed ratio is 2:1; The helical pitch of the internal spiral raceway in 6 (a) on rotating cylinder is 1.5 times of helical pitch of the external spiral rollaway nest on outer rotaring tube in 6 (c), and its reduction speed ratio is 3:2.
Interior rotating cylinder 9 and outer rotaring tube 10 are dismantled and are assembled with demand, therefore interior rotating cylinder 9 and the outer rotaring tube 10 with different spiral rolling track helical pitches are arranged in pairs or groups.By configuring the ratio of the helical pitch of the internal spiral raceway 8 on the outer rotaring tube 10 on interior rotating cylinder 9 and the helical pitch of external spiral rollaway nest 14, realize different reduction speed ratio.
Claims (4)
1. the straight line motion reducing gear of a spiral ball road, comprise urceolus (4), it is characterized in that: rolling bearing (3) is arranged on the inside, rear end of urceolus (4), rear end cover (7) is arranged on the rear end of urceolus (4), the first linear roller bearing (6) is arranged on the front end of urceolus (4), output push rod (5) is 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), outer rotaring tube (10) is fixed on interior rotating cylinder (9), outer rotaring tube (10) and interior rotating cylinder (9) are synchronously rotated, but can not move axially, outer rotaring tube (10) outer wall is provided with external spiral rollaway nest (14), interior rotating cylinder (9) inwall is provided with internal spiral raceway (8), external spiral rollaway nest (14) is identical with the Hand of spiral of internal spiral raceway (8), retainer remains on plural the first ball (12) between the external spiral rollaway nest (14) on inwall and the outer rotaring tube (10) of exporting push rod (5), make outer rotaring tube (10) when rotated, 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 cover (7), input push rod (1) is arranged on the second linear roller bearing (2), retainer remains on plural the second ball (11) between the internal spiral raceway (8) on input push rod (1) and interior rotating cylinder (9) inwall, when making to input push rod (1) and promoting forward, the second ball (11) can only roll along the internal spiral raceway (8) on interior rotating cylinder (9).
2. the straight line motion reducing gear of a kind of spiral ball road according to claim 1, it is characterized in that: on outer rotaring tube (10) outer wall, be provided with plural external spiral rollaway nest (14), and the first ball (12) is remained between the plural external spiral rollaway nest (14) on inwall and the outer rotaring tube (10) of exporting push rod (5) by retainer, on interior rotating cylinder (9) inwall, be provided with plural internal spiral raceway (8), and by retainer, the second ball (11) is remained between the plural internal spiral raceway (8) on input push rod (1) and interior rotating cylinder (9) inwall.
3. the straight line motion reducing gear of a kind of spiral ball road according to claim 1, it is characterized in that: described internal spiral raceway (8) and external spiral rollaway nest (14) adopt the helix of slope variation or lead change, helix now becomes a diversified curve, its reduction speed ratio will not be a steady state value in movement process like this, meet the demand of special equipment to the reduction speed ratio changing in movement process.
4. the straight line motion reducing gear of a kind of spiral ball road according to claim 1, it is characterized in that, retarding method 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 roll along the internal spiral raceway (8) on interior rotating cylinder (9), and the second ball (11) can not rotate along the axis of input push rod (1), therefore plural the second ball (11) will make internal spiral 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 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 roll along the external spiral rollaway nest (14) on outer rotaring tube (10), the outer rotaring tube (10) rotating will drive plural the first ball (12) to roll forward along external spiral rollaway nest (14), thereby will export push rod (5) releases.The reduction speed ratio of retarding method depends on the ratio of the helical pitch of internal spiral raceway (8) and the helical pitch of external spiral rollaway nest (14), and 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 interior rotating cylinder (9) and the outer rotaring tube (10) with different spiral rolling track helical pitches are arranged in pairs or groups.By configuring the ratio of the helical pitch of the internal spiral raceway (8) on the outer rotaring tube (10) on interior rotating cylinder (9) and the helical pitch of external spiral rollaway nest (14), realize different reduction speed 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104033557A true CN104033557A (en) | 2014-09-10 |
| CN104033557B CN104033557B (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4905534A (en) * | 1987-04-29 | 1990-03-06 | Waybol, S.A. | Lead screw with balls recirculating by deflector with half-spherical supports |
| CN1205058A (en) * | 1996-09-17 | 1999-01-13 | 蒂业技凯株式会社 | Ball connecting body, and linear guide device and ball screw deivce utilizing ball connecting body |
| US6089117A (en) * | 1997-07-31 | 2000-07-18 | Thk Co., Ltd. | Ball screw device |
| US20060169079A1 (en) * | 2005-02-02 | 2006-08-03 | Mao-Tu Lee | Muffling structure of high-speed ball screw |
| CN101929533A (en) * | 2010-09-07 | 2010-12-29 | 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 |
-
2014
- 2014-06-25 CN CN201410288539.1A patent/CN104033557B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4905534A (en) * | 1987-04-29 | 1990-03-06 | Waybol, S.A. | Lead screw with balls recirculating by deflector with half-spherical supports |
| CN1205058A (en) * | 1996-09-17 | 1999-01-13 | 蒂业技凯株式会社 | Ball connecting body, and linear guide device and ball screw deivce utilizing ball connecting body |
| US6089117A (en) * | 1997-07-31 | 2000-07-18 | Thk Co., Ltd. | Ball screw device |
| US20060169079A1 (en) * | 2005-02-02 | 2006-08-03 | Mao-Tu Lee | Muffling structure of high-speed ball screw |
| CN101929533A (en) * | 2010-09-07 | 2010-12-29 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | Publication date |
|---|---|
| CN104033557B (en) | 2016-05-04 |
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Granted publication date: 20160504 Termination date: 20190625 |
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