CN106271803A - Rack-and-pinion is without backlash drive mechanism and double servo digital control lathes of application thereof - Google Patents
Rack-and-pinion is without backlash drive mechanism and double servo digital control lathes of application thereof Download PDFInfo
- Publication number
- CN106271803A CN106271803A CN201510256917.2A CN201510256917A CN106271803A CN 106271803 A CN106271803 A CN 106271803A CN 201510256917 A CN201510256917 A CN 201510256917A CN 106271803 A CN106271803 A CN 106271803A
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- China
- Prior art keywords
- gear
- tooth bar
- digital control
- backlash
- gear unit
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/36—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission in which a servomotor forms an essential element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
- B23Q5/56—Preventing backlash
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
Rack-and-pinion of the present invention is without backlash drive mechanism, and corresponding at least one gear unit that is provided with of tooth bar, each gear unit is made up of forward gear and reverse gear, is engaged on same tooth bar.The double servo digital control lathe of the present invention, rotated by servo motor driven gear unit, forward gear and reverse gear are respectively with its engagement of independent servo motor driven, it is inversely to start moment, by realizing the control of servomotor turning on the contrary, make reverse wheel and rack touch backlash, make the biased moment of tooth bar, thus eliminate gap.Therefore, in back and forth movement, forward will not there is backlash simultaneously in gear and reverse gear, reach without backlash transmission.The drive mechanism of the double servo digital control lathe of the present invention is except realizing without backlash transmission, it is directly connected to reductor by shaft coupling and drives gear, effectively shorten erection schedule and precision adjusts the time, and, double servo digital control lathes utilize direct drive mode to drive reductor, driven gear rotates, and is effectively improved transmission usefulness.
Description
Technical field
The present invention relates to a kind of drive mechanism, particularly relate to a kind of rack-and-pinion being mainly used in Digit Control Machine Tool
Drive mechanism without backlash, and double servo digital control lathes of application, belong to manufacture equipment field.
Background technology
Manufacturing equipment field, prior art major part uses lead-screw drive mechanism or rack pinion machine
Structure.Traditional lead-screw drive mechanism is typically made up of leading screw and overcoat, and both have the screw thread being mutually matched,
Overcoat uses the form of nut traditionally, and fixing with the object driven further is connected.During operation, overcoat
General holding does not rotates and leading screw rotates under driven by motor, and overcoat is just along leading screw axially-movable, thus carries
Animal body moves.But, when running in distance heavy duty linear motion, leading screw likely insufficient strength,
May result in lathe and the situation such as vibrations, shake occur, can cause time serious screw mandrel bending, deform, the most disconnected
The situation such as split, thus limit lead-screw drive mechanism range of application.
Rack and pinion drive mechanism has simple in construction, transmission efficiency advantages of higher, is widely used in mining machine
The industries such as tool, engineering machinery and automobile making.Rack and pinion drive mechanism is the gyration of gear to be changed
For the linear reciprocating motion of tooth bar, or the linear reciprocating motion of tooth bar is changed into the gyration of gear.Tooth
Wheel transmission dependence driving gear engages with driven gear, drive motion and power.Except above-mentioned advantage, also
Power is big, efficiency is high, life-span length, reliability high, can guarantee that the features such as constant gear ratio to have transmission.
But rack and pinion drive mechanism is unfit to do long-time transmission, the transmission especially as Digit Control Machine Tool fills
Put.Numerical controlled machine-tool director's time operates, and rack-and-pinion there will be the situation of abrasion, causes rack-and-pinion to be nibbled
Produce backlash at conjunction, i.e. easily there is back clearance during wheel and rack engagement, and then produce vibration and noise, thus
The abrasion causing rack and pinion drive mechanism to use for a long time is more serious, cannot ensure the situations such as transmission accuracy.
Summary of the invention
In view of this, an object of the present invention is to solve during said gear rack gear because of back clearance
Produce vibration and noise, cause degradation problem under serious wear, transmission accuracy, it is provided that a kind of rack-and-pinion without
Backlash drive mechanism.The two of the purpose of the present invention are to provide in one and comprise said gear tooth bar without backlash driver
Double servo digital control lathes of structure.Technical scheme is as follows:
One rack-and-pinion of the present invention is without backlash drive mechanism, including rack unit and gear unit, described tooth
Bar unit includes tooth bar, corresponding at least one gear unit that is provided with of described tooth bar, each described gear list
Unit is made up of forward gear and reverse gear, and forward gear and reverse gear are all engaged on same tooth bar.
A kind of double servo digital control lathes of the present invention, including described rack-and-pinion without backlash drive mechanism, lathe
Platform, reductor, the servo motor being arranged on reductor, tooth bar fixing device, described gear unit with subtract
Speed machine is installed as one, and servo motor connects gear unit, is rotated by servo motor driven gear unit,
The forward gear of each gear unit and reverse gear respectively from independent servo motor driven its engagement with,
Tooth bar is made forward to rotate or biased moment during backwards rotation at gear unit.
The double servo digital control lathe of the present invention further, described machine-tool platform is provided with motor board, and reductor is pacified
It is contained on motor board, makes gear unit be meshed with tooth bar by the position of governor motor plate.
The double servo digital control lathe of the present invention further, lathe arranges the slide of a slip, and motor board is installed
On slide.
Further, motor board is arranged on slide the double servo digital control lathe of the present invention by fixing seat.
Further, described tooth bar fixing device is provided in the side on lathe to the double servo digital control lathe of the present invention
Post, lateral column offers cell body, and cell body surface is installed surface, makes tooth bar be placed on installed surface and be positioned at side
On post.
Further, servo motor connects described gear list by shaft coupling to the double servo digital control lathe of the present invention
Unit.
The application of the present invention is implemented, and its significant technique effect is embodied in: 1. rack-and-pinion is without backlash driver
The gear unit of structure is made up of the pair of meshing forward gear on same tooth bar and reverse gear, be inversely
Start moment, contrary by realizing the control of servomotor turning to, make reverse wheel and rack touch
Backlash, and then make the biased moment of tooth bar, this mechanism when moving toward back, forward gear and reverse tooth
Wheel does not haves backlash, thus reaches without backlash transmission；2. owing to being difficult to the existence back of the body when wheel and rack engages
Gap, can effectively reduce vibration and noise, effectively alleviates the abrasion of long-time use, and then ensure that mechanism
Transmission accuracy situation；3. the double servo digital control lathe of the present invention is by rack-and-pinion without backlash drive mechanism, makes
Dual-Servo Motor applies biasing moment, back clearance is reduced or avoided and occurs, it is achieved work without backlash transmission；4. originally
The double servo digital control lathe of invention is directly connected to reductor by shaft coupling and drives gear, reaches to reduce installation zero
Part, is effectively shortened installation and the effect of precision adjustment time；The most double servo digital control lathes utilize integral drive
Mode drive reductor, driven gear rotates, and is effectively improved transmission usefulness.
Hereinafter just combine accompanying drawing, the detailed description of the invention of the present invention is described in further detail, so that the present invention
Technical scheme is more readily understood, grasps.
Accompanying drawing explanation
Fig. 1 is the rack-and-pinion of the present invention structural representation without backlash drive mechanism；
Fig. 2 is the structural representation of the double servo digital control lathe embodiment of the present invention；
Fig. 3 is the structural representation of another angle of the double servo digital control lathe embodiment of the present invention.
Detailed description of the invention
The embodiment of the invention discloses rack-and-pinion without backlash drive mechanism and the double servo digital control machines applying it
Bed.Those skilled in the art can use for reference present disclosure, is suitably modified structure or step realizes.Need especially
It is noted that all similar replacements and change apparent to those skilled in the art, they
It is considered as being included in the present invention.The application of the present invention is described by preferred embodiment, relevant
Personnel substantially in without departing from present invention, spirit and scope, application as herein described can be modified or
Suitably change and combination, realize and apply the technology of the present invention.
As it is shown in figure 1, the rack-and-pinion that the embodiment of the present invention is provided is without backlash drive mechanism, including tooth bar
Unit and gear unit, rack unit includes tooth bar 5, and every toothed rack 5 is corresponding is provided with a gear list
Unit, each gear unit is made up of forward gear 21 and reverse gear 22, forward gear 21 and reverse tooth
Wheel 22 is all engaged on same tooth bar 5.Fig. 1 is one of embodiment of the present invention, can set as required
Put and comprise many toothed rack 5, corresponding at least one gear unit that is provided with of every toothed rack 5, i.e. every toothed rack
5 can coordinate with two or more gear units simultaneously, and tooth bar 5 and all of gear unit are comprised
Forward gear 21 and reverse gear 22 engage, and then reach without backlash transmission.
Embodiment 1, as shown in Figure 2 and Figure 3, double servo digital control lathes that the embodiment of the present invention is provided,
Including rack-and-pinion provided by the present invention without backlash drive mechanism, machine-tool platform, reductor 6, it is arranged on and subtracts
Servo motor 7 on speed machine 6, tooth bar fixing device.Wherein, gear unit and reductor 6 are installed as one
Body, servo motor 7 connects gear unit, drives gear unit to rotate by servo motor 7, each gear
The forward gear 21 of unit and reverse gear 22 are driven with its engagement from independent servo motor 7 respectively,
Tooth bar 5 is made forward to rotate or biased moment during backwards rotation at gear unit.Therefore, gear teeth
The rotatory force that bar is driven by servo motor 7 without the tooth bar 5 in backlash drive mechanism, by forward gear 21
The biasing moment applied to it with reverse gear 22, forward gear 21 and reverse gear 22 will not go out simultaneously
Existing backlash, adjusts tooth bar 5 and the relative position in gear unit motor process, it is achieved pass without backlash further
Dynamic.
Embodiment 2, double servo digital control lathes that the embodiment of the present invention is provided, basis based on embodiment 1
On, not only include rack-and-pinion provided by the present invention without backlash drive mechanism, machine-tool platform, reductor 6,
The servo motor 7 that is arranged on reductor 6, tooth bar fixing device, and on machine-tool platform, it is additionally provided with horse
Reach plate 3.Reductor 6 is arranged on motor board 3, by the position of governor motor plate 3 make gear unit with
Tooth bar 5 is meshed.The position effect of governor motor plate 3 is to come and go fortune in rack-and-pinion without backlash drive mechanism
The first successive step that gear unit before Dong is meshed with tooth bar 5.In operating process, it is yet further desirable to this
The rack-and-pinion of bright offer is without the effect of the biased moment of backlash drive mechanism self structure, regulation motion
During forward gear 21 and reverse gear 22 backlash will not occur simultaneously, adjust further tooth bar 5 and tooth
Relative position in wheel unit motor process, it is achieved without backlash transmission.
Embodiment 3, double servo digital control lathes that the embodiment of the present invention is provided, basis based on embodiment 2
On, not only include rack-and-pinion provided by the present invention without backlash drive mechanism, machine-tool platform, reductor 6,
The servo motor 7 that is arranged on reductor 6, tooth bar fixing device, the motor board that arranges on machine-tool platform
3, lathe also sets up the slide 4 of a slip, makes motor board 3 be arranged on slide 4.Preferably, also may be used
Motor board 3 is arranged on slide 4 by fixing seat 2.
Embodiment 4, double servo digital control lathes that the embodiment of the present invention is provided, including said gear tooth bar without
Backlash drive mechanism, machine-tool platform, reductor 6, the servo motor 7 being arranged on reductor 6, tooth bar are solid
Determine device.This tooth bar fixing device preferably but is not restricted to the lateral column 1 being arranged on lathe, and lateral column 1 is opened
Being provided with cell body, cell body surface is installed surface, makes tooth bar 5 be placed on installed surface and is positioned on lateral column 1.
Specifically, servo motor 7 connects described tooth by shaft coupling (Fig. 2 and Fig. 3 is not shown) to the present invention
Wheel unit.Drive gear unit owing to using shaft coupling to be directly connected to reductor 6, reach to reduce installation zero
Part, effectively shortening are installed and the purpose of precision adjustment time.Meanwhile, utilize direct drive mode to drive to subtract
Speed machine 6, drives forward gear 21 and reverse gear 22 to rotate, is effectively improved transmission usefulness.
When servo motor 7 drives that forward gear 21 and reverse gear 22 rotate clockwise, start moment,
Forward gear 21 engages with tooth bar 5, and reverse gear 22 engages the control by servomotor with tooth bar 5
Realizing turning on the contrary, reverse gear 22 contacts with tooth bar 5 thus eliminates between gear unit and tooth bar 5
Gap, the reverse gear of external program order afterwards 22 changes rotation direction, the most forward gear 21 and reverse
Gear 22 rotating in same direction, carries out gapless linear motion.When carrying out back motion again, the same institute of principle
State, also do not have backlash between gear unit and tooth bar 5, thus reach to come and go transmission without backlash；Work as length
During time operating, it may appear that abrasion, follow-up also have only to adjust forward gear 21 and the rotation of reverse gear 22
Gyration, not only but also can carry out without backlash transmission, easy to adjust and efficiency is high.
During double servo digital control lathe specific works, first tooth bar 5 is arranged on lateral column 1, lateral column 1 milling
Go out installed surface or the breasting face of tooth bar 5, the most directly ensure the requirement of precision, effectively reduce follow-up
The cumulative error assembled.Secondly first fixing seat 2 is installed on slide 4, then by the most mounted horse
Reach plate 3 and be installed to fixing seat 2 with reductor 6, make forward gear 21 and reverse tooth by governor motor plate 3
Wheel 22 engages with tooth bar 5, then is arranged on reductor 6 by servo motor 7.
To sum up, rack-and-pinion of the present invention without the gear unit of backlash drive mechanism by pair of meshing at same gear
On forward gear and reverse gear constitute, this mechanism when doing back and forth movement, forward gear and reverse gear
Backlash will not occur simultaneously, thus reach without backlash transmission；Owing to being difficult to there is the back of the body when wheel and rack engages
Gap, can effectively reduce vibration and noise, effectively alleviates the abrasion of long-time use, and then ensure that mechanism
Transmission accuracy situation；The double servo digital control lathe of the present invention without backlash drive mechanism, makes double by rack-and-pinion
Servomotor applies biasing moment, back clearance is reduced or avoided and occurs, thus reach without backlash transmission；Due to this
The double servo digital control lathe of invention is directly connected to reductor by shaft coupling and drives gear, reaches to reduce installation zero
Part, is effectively shortened installation and the effect of precision adjustment time；Meanwhile, the present invention double servo digital control lathe profit
Driving reductor by direct drive mode, driven gear rotates, and is effectively improved transmission usefulness.
Claims (7)
1. rack-and-pinion is without backlash drive mechanism, including rack unit and gear unit, it is characterized in that: described rack unit includes tooth bar (5), described tooth bar (5) is corresponding is provided with at least one gear unit, each described gear unit is made up of forward gear (21) and reverse gear (22), and forward gear (21) and reverse gear (22) are all engaged on same tooth bar (5).
2. double servo digital control lathes, including rack-and-pinion described in claim 1 without backlash drive mechanism, it is characterised in that: also include machine-tool platform, reductor (6), the servo motor (7) being arranged on reductor (6), tooth bar fixing device,
Described gear unit and reductor (6) are installed as one, servo motor (7) connects gear unit, gear unit is driven to rotate by servo motor (7), the forward gear (21) of each gear unit and reverse gear (22) are driven with its engagement from independent servo motor (7) respectively, make tooth bar (5) forward rotate or biased moment during backwards rotation at gear unit.
The most according to claim 2 pair of servo digital control lathe, it is characterized in that: on described machine-tool platform, be provided with motor board (3), reductor (6) is arranged on motor board (3), makes gear unit be meshed with tooth bar (5) by the position of governor motor plate (3).
The most according to claim 3 pair of servo digital control lathe, it is characterised in that: arranging the slide (4) of a slip on lathe, motor board (3) is arranged on slide (4).
The most according to claim 4 pair of servo digital control lathe, it is characterised in that: motor board (3) is arranged on slide (4) by fixing seat (2).
The most according to claim 2 pair of servo digital control lathe, it is characterized in that: the lateral column (1) that described tooth bar fixing device is provided on lathe, offering cell body on lateral column (1), cell body surface is installed surface, makes tooth bar (5) be placed on installed surface and be positioned on lateral column (1).
The most according to claim 2 pair of servo digital control lathe, it is characterised in that: servo motor (7) connects described gear unit by shaft coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510256917.2A CN106271803A (en) | 2015-05-20 | 2015-05-20 | Rack-and-pinion is without backlash drive mechanism and double servo digital control lathes of application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510256917.2A CN106271803A (en) | 2015-05-20 | 2015-05-20 | Rack-and-pinion is without backlash drive mechanism and double servo digital control lathes of application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106271803A true CN106271803A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510256917.2A Pending CN106271803A (en) | 2015-05-20 | 2015-05-20 | Rack-and-pinion is without backlash drive mechanism and double servo digital control lathes of application thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243060A (en) * | 2018-09-04 | 2019-01-18 | 广州甘来信息科技有限公司 | A kind of automatic vending machine and combined type vending machine |
| CN114310428A (en) * | 2022-02-14 | 2022-04-12 | 张瑞骏 | Spindle rotation angle positioning structure and control method thereof |
| CN114986319A (en) * | 2022-08-03 | 2022-09-02 | 广东金玻智能装备有限公司 | Gapless self-locking structure, traction device with gapless self-locking structure and glass edge grinding machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1503410A (en) * | 1976-07-30 | 1978-03-08 | Armytage Bros Ltd | Copy system driving mechanism particularly for machine tool slides and powered servo systems |
| JPS61252041A (en) * | 1985-04-30 | 1986-11-10 | Toyoda Mach Works Ltd | Numerical control machine tool |
| DE102011080979A1 (en) * | 2011-06-29 | 2013-01-03 | Robert Bosch Gmbh | Power transmission arrangement for converting rotational movement into translational movement for dual pinion-steering gear for power steering of vehicle, has pinion shaft subjected with force, and rotor shaft held between worm wheels |
| CN203009774U (en) * | 2012-12-31 | 2013-06-19 | 广州机床厂有限公司 | Dual-motor anti-backlash transmission mechanism |
| CN204843676U (en) * | 2015-05-20 | 2015-12-09 | 崴立机电（苏州）有限公司 | Two servo digit control machine tools |
-
2015
- 2015-05-20 CN CN201510256917.2A patent/CN106271803A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1503410A (en) * | 1976-07-30 | 1978-03-08 | Armytage Bros Ltd | Copy system driving mechanism particularly for machine tool slides and powered servo systems |
| JPS61252041A (en) * | 1985-04-30 | 1986-11-10 | Toyoda Mach Works Ltd | Numerical control machine tool |
| DE102011080979A1 (en) * | 2011-06-29 | 2013-01-03 | Robert Bosch Gmbh | Power transmission arrangement for converting rotational movement into translational movement for dual pinion-steering gear for power steering of vehicle, has pinion shaft subjected with force, and rotor shaft held between worm wheels |
| CN203009774U (en) * | 2012-12-31 | 2013-06-19 | 广州机床厂有限公司 | Dual-motor anti-backlash transmission mechanism |
| CN204843676U (en) * | 2015-05-20 | 2015-12-09 | 崴立机电（苏州）有限公司 | Two servo digit control machine tools |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243060A (en) * | 2018-09-04 | 2019-01-18 | 广州甘来信息科技有限公司 | A kind of automatic vending machine and combined type vending machine |
| CN114310428A (en) * | 2022-02-14 | 2022-04-12 | 张瑞骏 | Spindle rotation angle positioning structure and control method thereof |
| CN114986319A (en) * | 2022-08-03 | 2022-09-02 | 广东金玻智能装备有限公司 | Gapless self-locking structure, traction device with gapless self-locking structure and glass edge grinding machine |
| CN114986319B (en) * | 2022-08-03 | 2022-12-13 | 广东金玻智能装备有限公司 | Gapless self-locking structure, traction device with gapless self-locking structure and glass edge grinding machine |
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Application publication date: 20170104 |
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