CN1496784A - Dislocation preventing device of holder - Google Patents
Dislocation preventing device of holder Download PDFInfo
- Publication number
- CN1496784A CN1496784A CNA031255957A CN03125595A CN1496784A CN 1496784 A CN1496784 A CN 1496784A CN A031255957 A CNA031255957 A CN A031255957A CN 03125595 A CN03125595 A CN 03125595A CN 1496784 A CN1496784 A CN 1496784A
- Authority
- CN
- China
- Prior art keywords
- retainer
- ball
- screw
- dislocation
- moving body
- 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.)
- Granted
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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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/40—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using ball, roller or wheel arrangements
-
- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/267—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members with means to prevent skewness between the relatively slidable members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Machine Tool Units (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The object of the present invention is to provide a retainer displacement prevention device for preventing relative displacement between a retainer 6, 7 of a limiting roller for supporting and guiding a moving body and the moving body. To realize the above object, the retainer displacement prevention device of this invention includes: a support 1 for guiding the guiding faces 8, 9 of a worktable 2 of a machine tool; a rolling guiding mechanism comprising plural limiting rollers supported by retainers 6, 7 and guiding the worktable 2 to move along the guiding faces 8, 9; and a moving body for a feeding mechanism of a machine tool having a first ball screw 4 for advancing the retainer displacement prevention device of the retainers 6, 7 adopted by a guiding device, wherein stopping means 21a, 21b, 24a, 24b for limiting positions of the retainers 6, 7 and moving along with the retainers 6, 7, and advancing means 13, 11a, 11b, 11c, 14 for keeping the stopping means to move along with the retainers 6, 7 under the same speed are provided.
Description
Technical field
The present invention relates to have on the guide surface in moving bodys such as platen retainer use the sliding unit of limited roller, particularly relate to the anti-locking apparatus of dislocation of the retainer that prevents the retainer skew.
Background technology
Using a plurality of limited roller that is maintained at by retainer in the guide surfaces such as plane, V-arrangement face, moving along the guide surface of fixed body in the feeding guidance unit of moving body of moving body, come mobile moving body by on limited roller, being loaded with moving body and driving ball-screw.Limited roller is used as the ultraprecise feeding owing to friction is little guide uses (for example, referring to patent documentation 1).
Fig. 2 is a vertical view, and it has shown the unmigrated state of retainer of existing device.Shown the situation that is positioned at whole stroke centre position as the workbench 2 of moving body, retainer 6,7 is the center with workbench 2, and left and right symmetrically is arranged on the guide surface 8 and 9 as the base 1 of fixed body.
Drive ball-screw 31 if rotate by servo motor 3, then be fixed on the ball-screw nut not shown in the figures workbench 2 on paper to the left and right direction move.Under the situation that workbench 2 moves, half of the amount of movement of retainer 6,7 travelling tables 2.(for example, when workbench 2 was moved to the left 200mm, retainer 6,7 was moved to the left 100mm).
When carrying out workbench 2 mobile repeatedly, between base 1 and workbench 2, produce slip a little by means of the friction of limited roller, retainer 6,7 slowly is offset.In once the moving of workbench 2, retainer 6,7 is the several μ m of skew approximately.Fig. 3 is a vertical view, and it has shown the shift state of one-sided retainer on left and right directions.Under the long situation of stroke, retainer 6 or 7 breaks away from workbench.If retainer 6 or 7 breaks away from workbench 2, sensor 37a, the 37b, 37c, the 37d that are provided with on the workbench 2 will detect retainer 6 or 7 disengaging.Afterwards, carry out retainer 6 or 7 position correction (for example, referring to patent documentation 2) to having broken away from.
Fig. 4 is a vertical view, and it has shown moves right workbench 2, makes retainer 6 touch the state of retainer 33 with the position of correction retainer 6.As shown in Figure 4, when workbench 2 moved right, the retainer 6 that is offset a side touched the retainer 33 that is provided with in the front and back of base 1.Afterwards, in contact condition, if particularly workbench 2 moves to right, then retainer 6 utilizes workbench 2 to revise the skew (for example referring to patent documentation 3) of sliding.
(patent documentation 1) spy opens the 2000-202727 communique
(patent documentation 2) spy opens flat 7-245260 communique
(patent documentation 3) spy opens flat 5-198469 communique
Summary of the invention
But in the position correcting method of existing retainer 6,7, under the long situation of stroke, retainer 6 or 7 breaks away from workbench 2, has the danger that has an accident.Under the situation that workbench 2 weighs, retainer 6,7 does not also slide between base 1 and workbench 2 sometimes, produces flexing, breakage, needs a lot of times in mechanical prosthesis.Thereby the retainer 6,7 of skew has been revised side-play amount owing to touch retainer 33, so retainer 6,7 deforms, and bring bad influence can for the positioning accuracy and the glacing flatness of machinery.
Like this, if repeat moving of workbench 2, then, need regularly make retainer 6 or 7 contact retainers and come the executing location correction, thereby lose time because retainer 6 or 7 slowly is offset.Wherein, because the offset direction of retainer 6,7 is not certain, therefore there is the direction that must detect the correction of retainer 6,7, and determines the moving direction of workbench 2, come the troublesome problem of executing location correction by sensor 37a, 37b, 37c, 37d.
The object of the present invention is to provide a kind of anti-locking apparatus of dislocation of retainer, it can make retainer not prevent the skew of retainer with deforming, even if under the very heavy situation of workbench, retainer is not slided between base and workbench, can not produce flexing, breakage.
In order to realize described purpose, the present invention is the anti-locking apparatus of the dislocation of the retainer in a kind of moving body feeding guiding device, and this moving body feeding guiding device comprises: the fixed body with guide surface of lathe moving body; Have a plurality of limited roller that the body that is fixed keeps and the rolling guide that moves that guides described moving body along guide surface, and feeding structure with moving body of the 1st ball-screw, it is characterized in that, have stop mechanism and stop feed mechanism, wherein, described stop mechanism has limited the position of described retainer, and can move with moving in linkage of described retainer; Described stop feed mechanism can make described stop mechanism move with the mobile phase speed together with described retainer.
Described stop feed mechanism preferably has: be arranged on the 2nd ball-screw on the described fixed body abreast with described first ball-screw; The rotation of described the 1st ball-screw is passed to the transmission mechanism of the 2nd ball-screw; That screw with described the 2nd ball-screw and the rotation of the 2nd ball-screw is converted to the nut of the ball-screw of the thrust that promotes described stop mechanism, the feed speed that constitutes to described stop mechanism of the helical pitch of the helical pitch of described the 1st ball-screw and described the 2nd ball-screw and the speed reducing ratio of described transmission mechanism is 1/2 of a described moving body feed speed.
This stop mechanism owing to usually move with the speed identical with retainer, and sandwiches the front and back or the stage casing of retainer, so the retainer body that can not relatively move is offset.Therefore, there is no need to carry out the position correction of retainer, owing to unlike prior art, contact retainer, correction side-play amount, so retainer does not produce distortion.Even if under the very heavy situation of moving body, retainer does not slide between base and workbench yet, can flexing, breakage yet.
According to the present invention, because the stop mechanism of restriction retainer moves with the speed identical with retainer, the relative position of retainer and moving body does not change, so retainer is with respect to not skew of moving body.Owing on retainer, only apply a little load during moving body moves, so retainer can not be out of shape yet.Therefore, can prevent the skew of retainer, and make retainer not produce distortion that even if under the very heavy situation of moving body, retainer does not slide yet, flexing between fixed body and moving body.
Description of drawings
Fig. 1 is the plane that locking apparatus is prevented in the dislocation of the retainer of the demonstration embodiment of the invention 1.
Fig. 2 shows that the retainer that has device does not have the vertical view of the state of skew.
Fig. 3 shows the existing one-sided retainer of the device vertical view of shift state to the right.
Fig. 4 is a vertical view, and it has shown that the workbench of existing device moves right, and makes retainer touch retainer, revises the state of retainer position.
The specific embodiment
Use Fig. 1 that embodiments of the present invention are described, Fig. 1 is a sheet of planar figure, and it has shown an embodiment of the anti-locking apparatus of dislocation of the retainer in the feeding guiding device of the workbench that applies the present invention to lathe.1 has shown base, and 2 have shown workbench.8, the 9th, the guide surface of guiding workbench 2.On guide surface 8, be loaded with retainer 6, on guide surface 9, be loaded with retainer 7. Retainer 6,7 maintains a plurality of rollers not shown in the figures.Be fixed with servo motor 3 on the base 1, and be fixed with bearing 5a, 5b, the 1st ball-screw 4 rotates freely that the earth's axis is bearing on this bearing 5a, the 5b.The feed mechanism of workbench constitutes, and the nut 4a and the 1st ball-screw 4 that are fixed on the 1st ball-screw on the workbench 2 screw.
Stop feed mechanism and transmission mechanism
The 2nd ball-screw 13 has the helical pitch that equates with the 1st ball-screw, and rotating freely abreast with the 1st ball-screw 4, the earth's axis is bearing on bearing 10a, the 10b that is fixed on the base 1.The nut 14 that is combined with nut 14, the 2 ball-screws of the 2nd ball-screw on the 2nd ball-screw 13 is not fixed with workbench 2, can move freely independently with respect to workbench 2.
So constitute transmission mechanism 25, make servo motor 3 one sides at the 1st ball-screw 4, fixed gear 11a, on the bearing 12 that is fixed on the base 1, rotation maintains and gear 11a meshed gears 11b freely, in servo motor 3 one sides of the 2nd ball-screw 13, fixed and gear 11b meshed gears 11c.The speed reducing ratio of this transmission mechanism 25 is 1/2.The rotation of the 2nd ball-screw 13, equidirectional by getting involved gear 11b with the 1st ball-screw 4.
Here, also can not use gear 11b and directly make gear 11a and gear 11c engagement.Under this situation because the 2nd ball-screw 13 is with respect to 4 reverse rotations of the 1st ball-screw, therefore, if use the ball-screw of reverse acting spiral, then the nut 14 of the 2nd ball-screw can with equidirectional the advancing of nut 4a of the 1st ball-screw.Also gear be can replace and pulley, timing conveyer belt etc. used regularly.
Stop mechanism and connecting structure body
The block 15 that on the nut 14 of the 2nd ball-screw, utilized bolting.On guide surface 8 one sides of block 15, the bracket 16 that utilized bolting utilizes bolt that plate 19 is fixed on this bracket 16.Utilize bolt that plate 22 is fixed on guide surface 9 one sides of block 15.In bracket 16, by bearing 27 keep, packing into is combined in sleeve 26 on the 1st ball-screw 4 sliding freely.
The length of the longitudinal direction of plate 19,22 and retainer 6,7 are basic identical.Also by with the nut 14 disengaging situations of the 2nd ball-screw under the bracket 18 and bolting plate 19 and 22 that dispose, thereby make two plates, 19,22 keeping parallelisms.The sleeve 28 that will be combined in sliding freely on the 1st ball-screw 4 by bearing 29 keeps, is encased in the bracket 18, and the sleeve 30 that will be combined in the 2nd ball-screw 13 by bearing 31 sliding freely keeps, is encased in the bracket 18, thus support plate 19,20.
Utilize bolting that check plate 20a is arranged on one end of plate 19, on this check plate 20a, retainer 21a is installed, utilize bolting that check plate 20b is arranged on the other end of plate 19, on this check plate 20b, check plate 21b is installed.
Equally, on an end of plate 22, utilize bolting that check plate 23a is arranged, on this check plate 23a, retainer 24a is installed, utilize bolting that check plate 23b is arranged, on this check plate 23b, retainer 24b is installed at the other end of plate 22.Formation is clamped the stop mechanism that retainer 24a and 24b are installed in retainer 7 ground from the both sides, front and back.
Next, the effect of the anti-locking apparatus of retainer skew of the present invention is described.
If the 1st ball-screw 4 is driven in rotation by servo motor 3, then be fixed on workbench 2 move left and right on paper on the nut 4a of the 1st ball-screw.Under the situation that workbench 2 moves, retainer 6,7 moves by the rotation of roller not shown in the figures and half of the amount of movement of travelling table 2.
Simultaneously, the 1st ball-screw 4 that drives by servo motor 3 rotation, will rotatablely move to slow down by gear 11a, 11b, 11c is sent on the 2nd ball-screw 13 after 1/2.The 2nd ball-screw 13 and the 4 equidirectional rotations of the 1st ball-screw, the 2nd ball-screw nut 14 the rotations that screw with the 2nd ball-screw 13 with the 2nd ball-screw 13 be converted to make stop mechanism with 1/2 transmission speed of workbench 2 along and workbench 2 equidirectional mobile thrusts.
Therefore, be installed in retainer 21a, 21b, retainer 24a, 24b on the connecting structure body that constitutes by the bracket 16 of fixing the 2nd ball-screw nut 14, bracket 18, plate 19,22, with the speed identical, move with the state that keeps relative position with retainer 6,7.
Therefore, because retainer 21a and 21b, the position of limiting retainer 6 respectively in the mode of the rear and front end of clamping retainer 6, then, the position that retainer 24a and 24b limit retainer 7 in the mode of the rear and front end of clamping retainer 7 is not so retainer 6 and 7 relative positions with respect to workbench 2 generally change, do not produce dislocation, thereby do not have necessity of executing location correction.Because retainer 6,7 only is subjected to the skew resistance of number μ m in once the moving of workbench 2, therefore do not produce distortion.
With respect to moving of the 2nd ball-screw nut 14, sleeve 26 and 28 supports the bracket 16 of formation connecting structure body and 18 heavy burden, and the 1st ball-screw 4 slides.Like this, sleeve 26 is by having bearing 27, also has sleeve 28 by having bearing 29, thus the slip along with the rotation of the 1st ball-screw 4 while rotate.
With respect to moving of the 2nd ball-screw nut 14, the heavy burden of sleeve 30 support bracket 18, the 2nd ball-screw 14 slides.So sleeve 30 is by having bearing 31, thereby slide while rotating along with the rotation of the 2nd ball-screw 13.
In the present embodiment, the helical pitch of the 2nd ball-screw 13 equates with the helical pitch of the 1st ball-screw 4, the speed reducing ratio of transmission mechanism 25 is 1/2, and still, the helical pitch that also can make the 2nd ball-screw 13 is that the speed reducing ratio of 1/2 transmission mechanism 25 of the helical pitch of the 1st ball-screw 4 is 1.That is, also can constitute the combination of the speed reducing ratio of the helical pitch of the helical pitch of the 1st ball-screw 4 and the 2nd ball-screw 13 and gear unit 25 like this, that is, the feed speed of the 2nd ball-screw nut 14 is with respect to 1/2 of the feed speed of the 1st ball-screw nut 4a.But, if the 1st ball-screw 4 is identical with the helical pitch of the 2nd ball-screw 13, then can use same ball-screw, be favourable therefore.
In the present embodiment, although stop mechanism constitutes the structure of the front and back of clamping retainer 6,7,, also can projection be set, and clamp this projection in the stage casing of retainer 6,7.
Claims (9)
1. locking apparatus is prevented in the dislocation of a kind of retainer in the moving body feeding guiding device, this moving body feeding guiding device comprises: the fixed body of guide surface with moving body of lathe, have a plurality of limited roller that is held the device maintenance and the rolling guide that moves that guides described moving body along guide surface, and feeding structure with moving body of the 1st ball-screw
It is characterized in that it comprises:
Stop mechanism, this mechanics limit the position of described retainer, can move with moving in linkage of described retainer;
The stop feed mechanism, this mechanism makes described stop mechanism to move with the speed that equates that moves of described retainer.
2. locking apparatus is prevented in the dislocation of retainer as claimed in claim 1, it is characterized in that:
Described stop feed mechanism comprises:
Be arranged on the 2nd ball-screw on the described fixed body abreast with described first ball-screw;
The rotation of described the 1st ball-screw is passed to the transmission mechanism of the 2nd ball-screw;
The nut that screws with described the 2nd ball-screw, the rotation of the 2nd ball-screw is converted to the ball-screw of the thrust that promotes described stop mechanism;
The feed speed that constitutes to described stop mechanism of the helical pitch of the helical pitch of described the 1st ball-screw and described the 2nd ball-screw and the speed reducing ratio of described transmission mechanism is 1/2 of a described moving body feed speed.
3. locking apparatus is prevented in the dislocation of retainer as claimed in claim 2, it is characterized in that:
Described stop mechanism comprises: with each leading section of left and right sides retainer in the left and right sides guide surface that is configured in described fixed body, the retainer that rearward end is docked; The check plate that keeps these retainers; With for about for each retainer, make the interval of described check plate keep going back with the interval of the same length of this retainer, simultaneously the connecting structure body that left and right symmetrically keeps these retainers.
4. the anti-locking apparatus of the dislocation of a kind of retainer as claimed in claim 2 is characterized in that the helical pitch of described the 2nd ball-screw equates that with the helical pitch of described the 1st ball-screw described transmission mechanism is decelerated to 1/2 with speed and transmits.
5. the anti-locking apparatus of the dislocation of a kind of retainer as claimed in claim 2 is characterized in that, the helical pitch of described the 2nd ball-screw be described the 1st ball-screw helical pitch 1/2, described transmission mechanism transmits with constant speed.
6. locking apparatus is prevented in the dislocation of a kind of retainer as claimed in claim 3, it is characterized in that, the connecting structure body of described stop mechanism on the nut that is fixed to the ball-screw that screws with described the 2nd ball-screw in, also be bearing in sliding freely on described the 1st ball-screw and the 2nd ball-screw by sleeve.
7. the anti-locking apparatus of the dislocation of a kind of retainer as claimed in claim 6 is characterized in that, described sleeve is installed on the described connecting structure body freely by the bearing rotation.
8. the anti-locking apparatus of the dislocation of a kind of retainer as claimed in claim 3 is characterized in that, described stop mechanism is by clamping the position that the projection that is arranged on described retainer stage casing limits retainer.
9. the anti-locking apparatus of the dislocation of a kind of retainer as claimed in claim 1 or 2 is characterized in that, described moving body is the workbench of the lathe that moves on base.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP278279/02 | 2002-09-25 | ||
| JP2002278279A JP4326199B2 (en) | 2002-09-25 | 2002-09-25 | Retainer slip prevention device |
| JP278279/2002 | 2002-09-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1496784A true CN1496784A (en) | 2004-05-19 |
| CN1241713C CN1241713C (en) | 2006-02-15 |
Family
ID=32273588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031255957A Expired - Lifetime CN1241713C (en) | 2002-09-25 | 2003-09-25 | Dislocation preventing device of holder |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4326199B2 (en) |
| KR (1) | KR100534031B1 (en) |
| CN (1) | CN1241713C (en) |
| TW (1) | TWI232912B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834815A (en) * | 2015-02-03 | 2016-08-10 | 株式会社捷太格特 | Feed apparatus and machine tool |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4808590B2 (en) | 2006-10-26 | 2011-11-02 | 東芝機械株式会社 | Retainer misalignment prevention device |
| JP2014077514A (en) * | 2012-10-11 | 2014-05-01 | Nsk Ltd | Linear motion table device |
| JP6291277B2 (en) * | 2014-02-17 | 2018-03-14 | ヤマハ発動機株式会社 | Actuator |
-
2002
- 2002-09-25 JP JP2002278279A patent/JP4326199B2/en not_active Expired - Lifetime
-
2003
- 2003-09-19 TW TW092126006A patent/TWI232912B/en not_active IP Right Cessation
- 2003-09-25 CN CNB031255957A patent/CN1241713C/en not_active Expired - Lifetime
- 2003-09-25 KR KR10-2003-0066608A patent/KR100534031B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834815A (en) * | 2015-02-03 | 2016-08-10 | 株式会社捷太格特 | Feed apparatus and machine tool |
| CN105834815B (en) * | 2015-02-03 | 2019-09-03 | 株式会社捷太格特 | Feed arrangement and lathe |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040027414A (en) | 2004-04-01 |
| KR100534031B1 (en) | 2005-12-07 |
| JP4326199B2 (en) | 2009-09-02 |
| JP2004116592A (en) | 2004-04-15 |
| TW200404960A (en) | 2004-04-01 |
| TWI232912B (en) | 2005-05-21 |
| CN1241713C (en) | 2006-02-15 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20060215 |
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| CX01 | Expiry of patent term |