CN102699687A - Unloading cross beam for large-span gantry machine tool - Google Patents
Unloading cross beam for large-span gantry machine tool Download PDFInfo
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- CN102699687A CN102699687A CN2012101850610A CN201210185061A CN102699687A CN 102699687 A CN102699687 A CN 102699687A CN 2012101850610 A CN2012101850610 A CN 2012101850610A CN 201210185061 A CN201210185061 A CN 201210185061A CN 102699687 A CN102699687 A CN 102699687A
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- relieving slab
- crossbeam
- unloading
- cross beam
- moving component
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Abstract
The invention provides an unloading cross beam for a large-span gantry machine tool. An unloading device is mounted on the beam of the gantry machine tool, and comprises an unloading board and one to three sets of load bearing mechanisms; two ends of the unloading board are fixedly mounted on horizontal supporting shafts at two ends of the cross beam near upright posts on two sides; the surface of the unloading board is parallel to the front surface of the cross beam vertically; the upper edge of the unloading board serves as a stressed surface and is a slightly bent arc surface; each load bearing mechanism mainly comprises a connecting seat and a bearing capacity adjusting device, and is fixed on the base of a moving element; a roller bracket is arranged at the lower end of the connecting seat; and rollers on the roller bracket are in rolling matching with the upper edge of the unloading board. The unloading cross beam can transfer the gravity of the moving element to upright posts of a gantry framework, so as to avoid deflection of and deformation of the cross beam, and ensure that the moving element is kept in a stable horizontal rectilinear moving state all the time. The unloading cross beam has the advantages that the structure is simple; the cost is low; and both the mounting and the debugging are convenient.
Description
Technical field
The invention belongs to the Longmen machine tool field, what relate to is the crossbeam of Longmen machine tool, the crossbeam on particularly a kind of large span Longmen machine tool.
Background technology
On middle-size and small-size Longmen machine tool, though the moving component on the crossbeam of gantry is a main spindle box crossbeam there is the gravity effect, because the crossbeam span is little, moving component is in light weight, therefore, the gravity effect can not have influence on the machining accuracy of lathe basically.And on large-scale, heavy Longmen machine tool, not only the span of gantry crossbeam is big, and the moving component that is loaded on the crossbeam is also very heavy, weighs tens tons usually, the tens of tons of the arrival that has.So big gravity effect can produce very big influence to crossbeam naturally, also will inevitably cause crossbeam generation deflection deformation, directly influences the machining accuracy of lathe, even can have influence on the normal function of lathe.The means that prior art addresses this problem are through the rigidity of strengthening gantry frame and the fit clearance that reduces associated components basically.
Summary of the invention
The objective of the invention is to propose a kind of large span Longmen machine tool off-load crossbeam, this crossbeam can be with the force of gravity of moving component to the column of gantry frame, and crossbeam deflection deformation can not take place, and can improve machining accuracy large-scale, heavy Longmen machine tool.
The technical scheme that realizes above-mentioned purpose is: a relief arrangement is installed on the crossbeam at gantry; This relief arrangement is made up of a relieving slab and one to the three secondary force mechanisms that carries, and said relieving slab is to bear the also parts of removal load, and the relieving slab two ends are fixedly mounted on the horizontal supporting shaft near the crossbeam two ends of two edge columns; The plate face is parallel with the crossbeam front with plumbness; The upper edge of relieving slab is that stress surface is the arc surface that arches slightly, and force mechanisms was the mechanism of carrying moving component in said year, mainly was made up of Connection Block and bearing capacity adjusting device; Carrying force mechanisms is fixed on the moving component pedestal; There is rolling wheel support the lower end of Connection Block, and the roller on the rolling wheel support forms to roll with the upper edge of relieving slab and cooperates, and makes and carries force mechanisms roll displacement on relieving slab.
The arc surface of said relieving slab upper edge; The shape of its circular curve is possibly cause that according to moving component weight the elastic deformation amount of relieving slab is determined, and the gravity of moving component makes the arc surface pattern curve of deflection curve and relieving slab of relieving slab generation strain consistent.
Said bearing capacity adjusting device mainly is made up of guide pin bushing, back shaft, dish spring and clamping sleeve; Guide pin bushing is vertically mounted on the Connection Block and with the moving component pedestal and is fixedly connected; Back shaft is arranged in guide pin bushing, and its lower end is fixed on the rolling wheel support, and the dish spring is sleeved on the back shaft; Clamping sleeve is sleeved on the back shaft and is pressed on the dish spring, and there is a locking nut of regulating the clamping sleeve high and low position on the back shaft top.
For the plate face that guarantees relieving slab is a plumbness; The appropriate location on beam vertical center line both sides is symmetrically arranged with two guiding mechanisms about the relieving slab plumbness; Each mechanism is made up of a tie rod and a holding device; One termination of tie rod is connected the upper position of relieving slab horizontal central line, and holding device is positioned at the lower position of relieving slab back side horizontal central line, and its front end withstands on the relieving slab back side.Regulate tie rod and holding device and can adjust the plumbness of the plate face of relieving slab, and can limit the relieving slab beat jointly.
The present invention makes and is originally transferred to fully on the relieving slab by the gravity of the moving component that crossbeam carried, and relieving slab is passed to gravity on the gantry upright post through the two end supports axle, and crossbeam no longer receives the gravity effect of moving component, thereby deflection deformation does not take place.When lathe is worked; Moving component carries through carrying force mechanisms; Move along the upper edge of relieving slab and the guiding mechanism on the crossbeam; In the motion process, the gravity of moving component can make relieving slab generation deformation, but because the strain discharge curve of relieving slab is consistent with the circular shape curve of its upper edge; The instant deflection of relieving slab makes the high and low position of moving component be on the constant horizontal linear just, so just makes moving component in motion process, be in horizontal rectilinear motion state stably all the time.Such large span Longmen machine tool off-load crossbeam can improve the machining accuracy of lathe naturally.The present invention is simple in structure, cost is low, and installation and debugging are all very convenient.
Description of drawings
Fig. 1 is the front schematic view of one embodiment of the invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 1.
Among the figure: 1. relieving slab, 2. roller, 3. bearing, 4. ring flange, 5. roller shaft, 6. moving component pedestal; 7. rolling wheel support, 8. Connection Block, 9. back shaft, 10. guide pin bushing, 11. spherical washers, 12. locking nuts; 13. clamping sleeve, 14. dish springs, 15. crossbeams, 16. tie rods, 17. compression axises, 18. fixed covers; 19. the dish spring, 20. support bars, 21. support wheels, 22. curved surface back-up blocks, 23. horizontal supporting shafts.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
To shown in Figure 3, large span Longmen machine tool off-load crossbeam of the present invention is that a relief arrangement has been installed on the crossbeam 15 of gantry frame like Fig. 1, and this relief arrangement is made up of a relieving slab 1 and a secondary force mechanisms that carries.How secondary carry force mechanisms also can be, present embodiment is only explained the present invention with a secondary force mechanisms that carries.The plate face of relieving slab 1 is vertically mounted on the horizontal supporting shaft 23 near crossbeam 15 two ends; The position of horizontal supporting shaft 23 is usually above the gantry frame column; The upper edge of relieving slab 1 is that stress surface is the arc surface that arches slightly; The elastic deformation amount that the moving component weight that the shape of its circular curve is carried according to relieving slab 1 possibly cause confirms that strain discharge curve and arc surface pattern curve are consistent; Carrying force mechanisms mainly is made up of a Connection Block 8 and a cover bearing capacity adjusting device; Connection Block 8 is fixedly connected with moving component pedestal 6; The lower end of Connection Block 8 is a rolling wheel support 7; Roller 2 is installed on the rolling wheel support 7, and roller 2 is installed on the rolling wheel support 7 through the cooperation of parts such as roller shaft 5, bearing 3 and ring flange 4, and roller 2 forms to roll with the upper edge of relieving slab 1 and cooperates.
In the present embodiment, the bearing capacity adjusting device mainly is made up of guide pin bushing 10, back shaft 9, dish spring 14 and clamping sleeve 13, and guide pin bushing 10 is vertically mounted on the Connection Block 8 and with moving component pedestal 6 and is fixedly connected; Back shaft 9 is arranged in guide pin bushing 10; The lower end of back shaft 9 is fixed on the rolling wheel support 7, and dish spring 14 is sleeved on the back shaft 9, and clamping sleeve 13 is sleeved on the back shaft 9 and through spherical washer 11 and is pressed on the dish spring 14; There is a locking nut 12 on the top of back shaft 9; Through rotational lock nut 12 is the high and low position of scalable clamping sleeve 13, promptly adjusts the elastic force of dish spring 14, as shown in Figure 2.
In the present embodiment; The appropriate location on crossbeam 15 median vertical line both sides is symmetrically arranged with a guiding mechanism about relieving slab 1 plumbness; This mechanism is made up of a tie rod 16 and a holding device, and a termination of tie rod 16 is connected the upper position of relieving slab 1 horizontal central line, and jacking mechanism is positioned at the lower position of relieving slab 1 back side horizontal central line; Its front end withstands on the back side of relieving slab 1, and is as shown in Figure 2.
As shown in Figure 2, jacking mechanism mainly is made up of compression axis 17, fixed cover 18, dish spring 19, support bar 20, support wheel 21.Support bar 20 is installed on the crossbeam 15 through the bearing level at two ends, and support wheel 21 is installed in the front end of support bar 20, and compression axis 17 is installed in through fixed cover 18 on the bearing of support bar 20 rear ends, and dish spring 19 is installed between compression axis 17 and the support bar 20.The adjustment compression axis 17 support bar 20 is protracted or after contract, the support wheel 21 of front end holds out against relieving slab 1 or loosens.During adjustment, cooperate tie rod 16, can accomplish the adjustment of relieving slab 1 plumbness.
Claims (4)
1. large span Longmen machine tool off-load crossbeam; It is characterized in that: a relief arrangement is installed on the crossbeam at gantry, and this relief arrangement is made up of a relieving slab and one to the three secondary force mechanisms that carries, and said relieving slab two ends are fixedly mounted on the horizontal supporting shaft near the crossbeam two ends of two edge columns; The plate face is parallel with the crossbeam front with plumbness; The upper edge of relieving slab is that stress surface is the arc surface that arches slightly, and force mechanisms mainly was made up of Connection Block and bearing capacity adjusting device in said year, carries force mechanisms and is fixed on the moving component pedestal; There is rolling wheel support the lower end of Connection Block, and the roller on the rolling wheel support forms to roll with the upper edge of relieving slab and cooperates.
2. according to the described off-load crossbeam of claim 1; It is characterized in that: the shape of said its circular curve is possibly cause that according to moving component weight the elastic deformation amount of relieving slab is determined, and the gravity of moving component makes the arc surface pattern curve of deflection curve and relieving slab of relieving slab generation strain consistent.
3. according to the described off-load crossbeam of claim 1; It is characterized in that: said bearing capacity adjusting device mainly is made up of guide pin bushing, back shaft, dish spring and clamping sleeve, and guide pin bushing is vertically mounted on the Connection Block and with the moving component pedestal and is fixedly connected, and back shaft is arranged in guide pin bushing; Its lower end is fixed on the rolling wheel support; The dish spring is sleeved on the back shaft, and clamping sleeve is sleeved on the back shaft and is pressed on the dish spring, and there is a locking nut of regulating the clamping sleeve high and low position on the back shaft top.
4. according to the described off-load crossbeam of claim 1; It is characterized in that: the appropriate location on beam vertical center line both sides is symmetrically arranged with two guiding mechanisms about the relieving slab plumbness; Each guiding mechanism is made up of a tie rod and a holding device; One termination of tie rod is connected the upper position of relieving slab horizontal central line, and holding device is positioned at the lower position of relieving slab back side horizontal central line, and its front end withstands on the relieving slab back side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210185061.0A CN102699687B (en) | 2012-06-05 | 2012-06-05 | Unloading cross beam for large-span gantry machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210185061.0A CN102699687B (en) | 2012-06-05 | 2012-06-05 | Unloading cross beam for large-span gantry machine tool |
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| Publication Number | Publication Date |
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| CN102699687A true CN102699687A (en) | 2012-10-03 |
| CN102699687B CN102699687B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210185061.0A Expired - Fee Related CN102699687B (en) | 2012-06-05 | 2012-06-05 | Unloading cross beam for large-span gantry machine tool |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286625A (en) * | 2013-06-03 | 2013-09-11 | 柳州正菱重型数控机床有限公司 | Unloading device for machine tool |
| CN110877207A (en) * | 2019-12-18 | 2020-03-13 | 高密宏泰机床制造有限公司 | Large-span heavy gantry numerical control machine tool |
| CN116135446A (en) * | 2023-04-20 | 2023-05-19 | 冈田智能(江苏)股份有限公司 | Wall-hanging type follow bamboo hat tool magazine with compensation of side-tipping offset and installation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1002126A2 (en) * | 1982-01-04 | 1983-03-07 | Ленинградское Специальное Конструкторское Бюро Тяжелых И Уникальных Станков | Apparatus for releaving machine tool crosspiece guides |
| CN102069386A (en) * | 2010-11-26 | 2011-05-25 | 大连机床集团有限责任公司 | Multiple-unit roller unloading mechanism for gantry machine tool |
| CN102126158A (en) * | 2010-12-22 | 2011-07-20 | 武汉重型机床集团有限公司 | Beam guide rail unloading device |
| CN201974279U (en) * | 2010-12-31 | 2011-09-14 | 中国直升机设计研究所 | Excitation head limiting device for fatigue test of helicopter blades |
| CN202668072U (en) * | 2012-06-05 | 2013-01-16 | 汉川机床集团有限公司 | Unloading cross beam of large-span gantry machine tool |
-
2012
- 2012-06-05 CN CN201210185061.0A patent/CN102699687B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1002126A2 (en) * | 1982-01-04 | 1983-03-07 | Ленинградское Специальное Конструкторское Бюро Тяжелых И Уникальных Станков | Apparatus for releaving machine tool crosspiece guides |
| CN102069386A (en) * | 2010-11-26 | 2011-05-25 | 大连机床集团有限责任公司 | Multiple-unit roller unloading mechanism for gantry machine tool |
| CN102126158A (en) * | 2010-12-22 | 2011-07-20 | 武汉重型机床集团有限公司 | Beam guide rail unloading device |
| CN201974279U (en) * | 2010-12-31 | 2011-09-14 | 中国直升机设计研究所 | Excitation head limiting device for fatigue test of helicopter blades |
| CN202668072U (en) * | 2012-06-05 | 2013-01-16 | 汉川机床集团有限公司 | Unloading cross beam of large-span gantry machine tool |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286625A (en) * | 2013-06-03 | 2013-09-11 | 柳州正菱重型数控机床有限公司 | Unloading device for machine tool |
| CN103286625B (en) * | 2013-06-03 | 2016-02-10 | 柳州正菱重型数控机床有限公司 | Lathe relief arrangement |
| CN110877207A (en) * | 2019-12-18 | 2020-03-13 | 高密宏泰机床制造有限公司 | Large-span heavy gantry numerical control machine tool |
| CN116135446A (en) * | 2023-04-20 | 2023-05-19 | 冈田智能(江苏)股份有限公司 | Wall-hanging type follow bamboo hat tool magazine with compensation of side-tipping offset and installation method thereof |
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| CN102699687B (en) | 2015-05-13 |
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Granted publication date: 20150513 Termination date: 20170605 |