CN101913267B - Position detecting device for sliding block of hydraulic press - Google Patents
Position detecting device for sliding block of hydraulic press Download PDFInfo
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- CN101913267B CN101913267B CN 201010236184 CN201010236184A CN101913267B CN 101913267 B CN101913267 B CN 101913267B CN 201010236184 CN201010236184 CN 201010236184 CN 201010236184 A CN201010236184 A CN 201010236184A CN 101913267 B CN101913267 B CN 101913267B
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Abstract
The invention discloses a position detecting device for a sliding block of a hydraulic press. The position detecting device comprises a guide post and a guide seat, wherein the guide post is arranged at the top of the sliding block and linked with the sliding block, and the guide seat is matched with the guide post; the guide post is provided with a rack along the axial motion direction; the guide seat is provided with a gear fixing seat; a gear driven by the axial motion of the rack to rotate is arranged in the gear fixing seat; and the gear fixing seat is also provided with a signal conversion device for transmitting a gear rotating speed signal to a control system of the hydraulic press. The position detecting device has the advantages of simple structure, reasonable design, reduction of influence of a mounting structure on the detection precision and high precision and economy, and provides a good solution for position control of the sliding block of the long-stroke quick hydraulic press.
Description
Technical field
The invention belongs to the hydraulic press technical field, relate in particular to a kind of position detecting device of slider of hydraulic press.
Invention field
Problem to be solved by this invention just provides a kind of position detecting device of slider of hydraulic press, simple in structure, reasonable in design, reduce mounting structure to the impact of accuracy of detection, precision and economy are high, and particularly the slide position control for long stroke high speed hydraulic press provides good solution.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of position detecting device of slider of hydraulic press, comprise be located at slider top and with the guide pillar of its interlock, the guide holder that cooperates with described guide pillar, be provided with tooth bar along its axially-movable direction on the described guide pillar, the gear holder is installed on the described guide holder, be provided with the gear that is driven rotation by the axially-movable of tooth bar in the gear holder, also be provided with the chromacoder that the gear rotational speed signal is passed to hydraulic press control system on the described gear holder, described gear is installed in the gear holder by exchanging structure, described exchanging structure comprises the turning cylinder that is installed in the gear holder, be located at the end cap that is used for the axial location turning cylinder on the gear holder, be located at the bearing arrangement that is used for the radial location turning cylinder in the end cap, described gear is installed on the turning cylinder.
Further, described chromacoder is rotary encoder, and described turning cylinder one end connects the signal input part of rotary encoder by shaft coupling.
Further, upper end and the guide holder of described gear holder are hinged, and are provided with between gear holder lower end and the guide holder for the sideshake compensation mechanism of eliminating the wheel and rack backlash.
Further, described sideshake compensation mechanism comprises adjusting screw(rod), gear holder lower end is provided with the through hole that passes for adjusting screw(rod), the adjusting screw(rod) front end is screwed onto the guide holder sidewall after passing described through hole, also is coated with on the described adjusting screw(rod) the regulating spring of gear holder to guide holder direction elastic compression.The gear holder is during to guide holder direction elastic compression, and gear and the tooth bar on the guide pillar that it is inner are in the Elastic Meshing state equally, and the backlash of this moment almost can be ignored, and improves the precision of transmission process with this; At any time backlash is compensated by adjusting screw(rod), regulative mode is simple and effective.
Further, has the adjusting gap between described through hole hole wall and the adjusting screw(rod) body of rod." stuck " situation appears when preventing the rack and pinion transmission.
Further, sidewall also is provided with and tightens up the backing-up screw that adjusting screw(rod) prevents that it from getting loose bottom the described guide holder.
Further, described tooth bar is by several pinion rack unit successively assembled split-type structural.For long stroke high speed hydraulic press, tooth bar must lengthen and could satisfy ram travel, but there is accumulated error man-hour in long tooth bar adding, the longer accumulated error of length is larger, therefore adopt the tooth bar of above-mentioned split-type structural, every section respectively independent processing of pinion rack, and the error that pinion rack adds man-hour is controlled in the scope of technological requirement, the mismachining tolerance of every section pinion rack can not add up when assembly unit, thereby also just controlled the error of assembly unit tooth bar, the machining accuracy of pinion rack is higher, and the precision of assembly unit tooth bar is also just higher.
Further, described pinion rack unit is inlaid on the guide pillar by screw.When wearing and tearing appear in certain section pinion rack, only need change this section wearing and tearing tooth bar, reduce maintenance difficulty, save maintenance cost.
Beneficial effect of the present invention:
1, adopt rotary encoder to detect, resolution ratio is high, and its accuracy of detection only depends on element self precision, the mate gear rack-driving, and accuracy of detection no longer is subject to the restriction of ram travel;
2, adopt the tooth bar of splicing structure, reduced the accumulated error that tooth bar adds man-hour;
3, for gear transmission structure, it is particularly important that the setting of sideshake compensation mechanism seems, can reduce even eliminate backlash, guarantees the stationarity of rack-and-pinion transmission, and the precision of rack-and-pinion transmission also improves therefrom;
4; Itself just has higher quality of fit guide pillar and guide holder, and the wheel and rack structural design is on guide pillar and guide holder, not only easy for installation, also can further reduce mounting structure to the impact of accuracy of detection;
In sum, position detecting device provided by the invention provides good solution for the slide position control of hydraulic press, especially control successful for the slide position of long stroke high speed hydraulic press, precision and economy are high, and simple and practical, install, easy to adjust, can simple match with the various control element, do not have compatible problem.
Background technology
At present hydraulic press is for the control of slide block, and especially the Synchronization Control during slide block movement adopts the method for position probing usually, and the control system of the hydraulic press positional information that its a plurality of zones detect during according to slide block movement is come it is adjusted, and realizes Synchronization Control.Existing position detecting device has and adopts travel switch, approach switch spacing, also have and adopt displacement transducer or electronic ruler directly to measure, but all there is certain defect in said structure: travel switch, approach switch need the mounting bracket of switch, though the position of installing can be regulated, control accuracy is low; Displacement transducer and electronic ruler, positional precision is higher, can digital display regulate, but the precision of its displacement reduces with the increase of impulse stroke, and the stroke of slide block can only be controlled within the specific limits its accuracy of detection of guarantee, causes in the use limitation.For this reason, China national Department of Intellectual Property discloses the patent No. in 2008-02-27 and has been " 200720036392.2 ", name is called the patent of " hydraulic press multi-cylinder interlock sync detection device ", the detection method that this patent adopts is: at slide block one tooth bar is set, band carry-over bar during slide block movement, tooth bar drives a gear by a series of transmission link and rotates, and by an encoder rotary speed information of gear is converted into digital data transmission to control system at last.This technical scheme has solved the existing defective of original checkout gear to a certain extent really, but new problem has appearred again in himself structure: be provided with too much transmission link between one, the rack and pinion, each link all can dynamic loss, and the rotary speed information of gear can not reflect the motion process of slide block accurately, intuitively; Two, too much transmission link increases accumulated error, affects accuracy of detection; Three, carry out transmission by the engagement between gear, but its position fixes all, backlash can't be adjusted, affects gear-driven stationarity, and " stuck " or " skidding " two kinds of extreme cases very easily appear in transmission process; Four, gear is arranged on the slide block, and it is all very inconvenient to install, modulate.
Therefore, how to provide a kind of simple and reasonable for structure, accuracy of detection is high, and the slide position checkout gear of being convenient to again to regulate simultaneously is the important topic that those skilled in the art study.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A profile of Fig. 1.
The specific embodiment
As shown in Figure 1 and Figure 2, the present invention is a kind of position detecting device of slider of hydraulic press, comprise be located at slide block 1 top and with the guide pillar 2 of its interlock, the guide holder 3 that cooperates with described guide pillar 2, be provided with tooth bar 7 along its axially-movable direction on the described guide pillar 2, on the described guide holder 3 gear holder 4 is installed, be provided with the gear 5 that is driven rotation by the axially-movable of tooth bar 7 in the gear holder 4, also be provided with the chromacoder 8 that gear 5 tach signals is passed to hydraulic press control system on the described gear holder 4.
Gear 5 is installed in the gear holder 4 by exchanging structure; Exchanging structure comprises the turning cylinder 40 that is installed in the gear holder 4, be located at the end cap 41 that is used for the axial location turning cylinder on the gear holder 4, be located at the bearing arrangements 42 that are used for the radial location turning cylinder in the end cap 41, and described gear 5 is installed on the turning cylinder 40; Chromacoder 8 is rotary encoder, and turning cylinder 40 1 ends connect the signal input part of rotary encoder by shaft coupling 44.
The upper end of gear holder 4 and guide holder 3 are hinged, and also are provided with between its lower end and the guide holder 3 for eliminating the sideshake compensation mechanism of gear 5 with tooth bar 7 backlash; The sideshake compensation mechanism comprises adjusting screw(rod) 6, gear holder 4 lower ends are provided with the through hole 43 that passes for adjusting screw(rod) 6, adjusting screw(rod) 6 front ends are screwed onto guide holder 3 sidewalls after passing described through hole 43, also are coated with on the described adjusting screw(rod) 6 regulating spring 60 of gear holder 4 to guide holder 3 direction elastic compressions.Gear holder 4 is during to guide holder 3 direction elastic compression, and its inner gear 5 is in the Elastic Meshing state equally with tooth bar 7 on the guide pillar 2, and the backlash of this moment almost can be ignored, and improves the precision of transmission process with this; At any time backlash is compensated by adjusting screw(rod) 6, regulative mode is simple and effective.Between through hole 43 hole walls and adjusting screw(rod) 6 bodies of rod, leave and regulate gap 61, occur " stuck " situation in the time of can preventing tooth bar 7 with gear 5 transmission; Guide holder 3 bottom sidewalls also are provided with and tighten up adjusting screw(rod) 6 and prevent its backing-up screw that gets loose 31.
During slide block movement, the rotation of guide pillar upper rack driven gear, rotary encoder is converted into digital signal transfers to the control system of hydraulic press with the rotary speed information of gear, this data signal be with the speed of service of slide block one to one, control system compares this data signal, regulates the turnover oil mass of proportional servo Oil pump electrical machinery by the data message that relatively draws, the Synchronization Control in the time of can realizing slide block movement, but for the small hydraulic machine that single cylinder drives, the present invention is applicable too.Therefore above-described embodiment is not construed as limiting protection scope of the present invention, and those skilled in the art can make according to the present invention various changes and distortion, only otherwise break away from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
Claims (8)
1. the position detecting device of a slider of hydraulic press, comprise be located at slide block (1) top and with the guide pillar (2) of its interlock, the guide holder (3) that cooperates with described guide pillar (2), described guide pillar (2) is upper to be provided with tooth bar (7) along its axially-movable direction, gear holder (4) is installed on the described guide holder (3), be provided with the gear (5) that is driven rotation by the axially-movable of tooth bar (7) in the gear holder (4), also be provided with the chromacoder (8) that the gear rotational speed signal is passed to hydraulic press control system on the described gear holder (4), described gear (5) is installed in the gear holder (4) by exchanging structure, it is characterized in that: described exchanging structure comprises the turning cylinder (40) that is installed in the gear holder (4), be located at the upper end cap (41) that is used for axial location turning cylinder (40) of gear holder (4), be located at the bearing arrangement (42) that is used for radial location turning cylinder (40) in the end cap (41), described gear (5) is installed on the turning cylinder (40).
2. the position detecting device of a kind of slider of hydraulic press according to claim 1, it is characterized in that: described chromacoder (8) is rotary encoder, and described turning cylinder (40) one ends connect the signal input part of rotary encoder by shaft coupling (44).
3. the position detecting device of a kind of slider of hydraulic press according to claim 1, it is characterized in that: the upper end of described gear holder (4) and guide holder (3) are hinged, and are provided with between gear holder (4) lower end and the guide holder (3) for eliminating the sideshake compensation mechanism of gear (5) with tooth bar (7) backlash.
4. the position detecting device of a kind of slider of hydraulic press according to claim 3, it is characterized in that: described sideshake compensation mechanism comprises adjusting screw(rod) (6), gear holder (4) lower end is provided with the through hole (43) that passes for adjusting screw(rod) (6), adjusting screw(rod) (6) front end is screwed onto guide holder (3) sidewall after passing described through hole (43), also is coated with on the described adjusting screw(rod) (6) the regulating spring (60) of gear holder (4) to guide holder (3) direction elastic compression.
5. the position detecting device of a kind of slider of hydraulic press according to claim 4 is characterized in that: have adjusting gap (61) between described through hole (43) hole wall and adjusting screw(rod) (6) body of rod.
6. the position detecting device of a kind of slider of hydraulic press according to claim 4 is characterized in that: described guide holder (3) bottom sidewall also is provided with and tightens up adjusting screw(rod) (6) and prevent its backing-up screw that gets loose (31).
7. the position detecting device of a kind of slider of hydraulic press according to claim 3 is characterized in that: described tooth bar (7) is by several pinion rack unit successively assembled split-type structural.
8. the position detecting device of a kind of slider of hydraulic press according to claim 7, it is characterized in that: the pinion rack unit is inlaid on the guide pillar (2) by screw (21).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010236184 CN101913267B (en) | 2010-07-22 | 2010-07-22 | Position detecting device for sliding block of hydraulic press |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010236184 CN101913267B (en) | 2010-07-22 | 2010-07-22 | Position detecting device for sliding block of hydraulic press |
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| CN101913267A CN101913267A (en) | 2010-12-15 |
| CN101913267B true CN101913267B (en) | 2013-01-02 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102416709B (en) * | 2011-11-11 | 2015-04-08 | 福建海源自动化机械股份有限公司 | Floating guide device for use on long-travel hydraulic press |
| CN104802441B (en) * | 2014-01-24 | 2017-01-11 | 宝山钢铁股份有限公司 | Briquetting press device for processing thick high-strength steel and application thereof |
| CN105201956B (en) * | 2014-11-24 | 2017-06-20 | 徐州重型机械有限公司 | Telescopic oil cylinder cylinder pin detection means and detection method |
| CN105423977A (en) * | 2015-11-18 | 2016-03-23 | 合肥合锻机床股份有限公司 | Hydraulic press slider detection device and detection method thereof |
| CN107356984A (en) * | 2017-06-20 | 2017-11-17 | 深圳市无牙太赫兹科技有限公司 | Stereoscan device |
| CN108080749B (en) * | 2018-02-05 | 2023-12-22 | 重庆机床(集团)有限责任公司 | High-precision worm gear processing machine tool with online detection mechanism and measurement control system thereof |
| CN109353046B (en) * | 2018-10-10 | 2020-11-10 | 合肥合锻智能制造股份有限公司 | Sliding block guiding precision adjusting device of four-column type hydraulic press |
| CN110667169A (en) * | 2019-09-27 | 2020-01-10 | 天津市天锻压力机有限公司 | High-precision detection device for position of slide block of servo press |
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|---|---|---|---|---|
| US5720988A (en) * | 1996-04-11 | 1998-02-24 | Aida Engineering Ltd. | Slide bottom dead center position compensating device |
| JP3097053B2 (en) * | 1994-04-22 | 2000-10-10 | 旭精機工業株式会社 | Bottom dead center position correction device for each process of transfer press |
| CN200939704Y (en) * | 2006-07-07 | 2007-08-29 | 合肥锻压机床有限公司 | Slider precision range positioner of hydraulic press |
| CN201026678Y (en) * | 2007-04-05 | 2008-02-27 | 江苏国力锻压机床有限公司 | Multi-cylinder linkage synchronous testing apparatus of hydraulic press |
| CN201736471U (en) * | 2010-07-22 | 2011-02-09 | 湖州机床厂有限公司 | Position detecting device for sliding block of hydraulic press |
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2010
- 2010-07-22 CN CN 201010236184 patent/CN101913267B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3097053B2 (en) * | 1994-04-22 | 2000-10-10 | 旭精機工業株式会社 | Bottom dead center position correction device for each process of transfer press |
| US5720988A (en) * | 1996-04-11 | 1998-02-24 | Aida Engineering Ltd. | Slide bottom dead center position compensating device |
| CN200939704Y (en) * | 2006-07-07 | 2007-08-29 | 合肥锻压机床有限公司 | Slider precision range positioner of hydraulic press |
| CN201026678Y (en) * | 2007-04-05 | 2008-02-27 | 江苏国力锻压机床有限公司 | Multi-cylinder linkage synchronous testing apparatus of hydraulic press |
| CN201736471U (en) * | 2010-07-22 | 2011-02-09 | 湖州机床厂有限公司 | Position detecting device for sliding block of hydraulic press |
Non-Patent Citations (1)
| Title |
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| JP特许第3097053号B2 2000.08.11 |
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