CN104325362A - Ram self-weight deformation compensation device - Google Patents
Ram self-weight deformation compensation device Download PDFInfo
- Publication number
- CN104325362A CN104325362A CN201310523905.2A CN201310523905A CN104325362A CN 104325362 A CN104325362 A CN 104325362A CN 201310523905 A CN201310523905 A CN 201310523905A CN 104325362 A CN104325362 A CN 104325362A
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- China
- Prior art keywords
- ram
- oil
- piston
- cylinder body
- oil cylinder
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Classifications
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- 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
- B23Q23/00—Arrangements for compensating for irregularities or wear, e.g. of ways, of setting mechanisms
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
Abstract
The invention discloses a ram self-weight deformation compensation device, and relates to the technical field of manufacturing of mechanical machining equipment. The ram self-weight deformation compensation device comprises a plurality of tensioning rods which penetrate a ram and extend out of the front end face of the ram; compressing nuts are arranged at the front ends of the tensioning rods; a plurality of oil cylinders are sequentially in series connection between each compressing nut and the front end face of the ram; the oil cylinders comprise oil cylinder bodies and pistons; the piston in the oil cylinder body at the most back position is provided with a flange stretching into the oil cylinder body in front of the oil cylinder body at the most back position; an oil groove communicated with an inner cavity of each oil cylinder is arranged on the piston between every two oil cylinders in the axial direction; the tensioning rods are provided with oil holes communicated with the piston oil grooves; the tensioning rods are connected with electro-hydraulic proportional valves through oil pipes. Compared with the prior art, according to the ram self-weight deformation compensation device, when the ram slides to extend out of a spindle box, the electro-hydraulic proportional valves control oil pressure in the oil cylinders to be increased, under action of the pistons, pull force of the tensioning rods is increased, and upward action force is generated. Deformation generated by self weight of the ram in the extending process is compensated, and the straightness precision of the ram is ensured; the machining precision is improved.
Description
Technical field
The present invention relates to machining equipment manufacturing technology field, especially a kind of deformation induced by gravity compensation arrangement for numerical control floor type boring and milling machine ram.
Background technology
Numerical control floor type boring and milling machine is mainly used in the huge and workpiece of heaviness of processing, and ram is contained in the parts in the square hole on boring and milling machine main spindle box, and appearance four sides is through the guide pass of Precision Machining as movement, and the square hole of main spindle box is the moving guide rail of ram.As the vitals of numerical control floor type boring and milling machine, ram will bear self weight in part process, when ram move stretch out square hole work time, the phenomenon of downward-sloping distortion is there will be at the ram of the effect lower cantalever of deadweight, this phenomenon can affect the linearity precision of ram and the rigidity of ram in process of production, the machining accuracy of reduction equipment, causes the crudy of part can not be guaranteed.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of prevent from ram from moving stretching out square hole after produce the ram deformation induced by gravity compensation arrangement of distortion.
In order to solve the problem, the technical solution used in the present invention is: this ram deformation induced by gravity compensation arrangement, comprise ram, described ram is coated with the tie rod that many are stretched out its front end face, be provided with clamp nut in the front end of described tie rod, between described clamp nut and described ram front end face, be serially connected with multiple oil cylinder successively.
In above-mentioned ram deformation induced by gravity compensation arrangement technical scheme, technical scheme can also be more specifically: described oil cylinder comprises cylinder body and is located at the piston in described cylinder body, is positioned at the flange that the piston of cylinder body described in rear has the described cylinder body stretching into front.
Further, the piston inner hole between two described oil cylinders is provided with the oil groove being communicated with described cylinder cavity vertically, and described tie rod is provided with the oilhole being communicated with described piston oil slot, and described tie rod connects electro-hydraulic proportional valve by oil pipe.
Further, endoporus at the bottom of the lateral wall and described oil cylinder of described piston is equipped with sealing ring, and the described piston inner hole being positioned at front end is provided with sealing ring.
The direction that ram in the present invention stretches out be by stretch out before backward towards.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
1, on ram, the tie rod that many are stretched out its front end face is coated with, clamp nut is provided with in the front end of tie rod, multiple oil cylinder is serially connected with successively between clamp nut and ram front end face, oil cylinder comprises cylinder body and is located at the piston in cylinder body, piston inner hole between two oil cylinders is provided with the oil groove being communicated with cylinder cavity vertically, tie rod is provided with the oilhole being communicated with piston oil slot, and tie rod is connected with electro-hydraulic proportional valve by oil pipe.When ram move stretch out main spindle box time, in Electro-hydraulic Proportional Control liquefaction cylinder oil pressure increase, under the effect of piston, make the pulling force of tie rod increase, be in tension, produce active force upwards, the distortion that when ram is stretched out, deadweight produces is compensated, and eliminates the downward-sloping distortion that deadweight produces; 2, ensure that the linearity precision of ram, machining accuracy is improved; 3, the rigidity of ram obtains larger raising, increases the service life; Structure is simple, is convenient to safeguard.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the structural representation that the tie rod of the embodiment of the present invention is in tension.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the invention will be further described:
A kind of ram deformation induced by gravity compensation arrangement as shown in Figure 1, comprise ram 1, ram 1 is coated with the tie rod 2 that two are stretched out its front end face, tie rod 2 rear end being positioned at ram 1 has positioning table, in the front end of tie rod 2, clamp nut 10 is housed, between clamp nut 6 and ram 1 front end face, is serially connected with three oil cylinders successively; Three oil cylinders comprise the first cylinder body 3 and the dress first piston 4 within it of nearly ram 1 front end face, the second cylinder body 5 installed successively and dress the second piston 6 within it, 3rd cylinder body 7 of nearly clamp nut 10 and dress the 3rd piston 8 within it, 3rd piston 8 abuts against with clamp nut 10, and the first piston 4 being positioned at first cylinder body 3 at rear has the flange of the second cylinder body 5 stretching into front; In second cylinder body, second piston 6 of 5 has the flange stretched in the 3rd cylinder body 7; First piston 4 has with the endoporus of the second piston 6 oil groove being communicated with adjacent cylinder cavity all vertically, and tie rod 2 has the oilhole being communicated with first piston 4 oil groove, and tie rod 2 connects electro-hydraulic proportional valve by oil pipe; The lateral wall of first, second, third piston and the cylinder bottom endoporus of first, second, third cylinder body are all equipped with sealing ring 9, the endoporus being positioned at the 3rd piston 8 of front end is equipped with sealing ring 9.
During work, the length that ram 1 stretches out main spindle box lengthens gradually, under the control of electro-hydraulic proportional valve, fluid enters the first cylinder body 3 by oil circuit, oil pressure in first cylinder body 3 is increased gradually, promote first piston 4 to move forward, first piston 4 promotes the second piston 6 and moves and compress the 3rd piston 8, as shown in Figure 2; The pulling force of tie rod 2 is strengthened gradually, produces active force upwards, the distortion that ram 1 deadweight produces is compensated, and eliminates the downward-sloping distortion that deadweight produces; When ram 1 bounces back, electro-hydraulic proportional valve controls oil pressure in the first cylinder body 3 and reduces gradually, and the pulling force of tie rod 2 reduces gradually, and active force upwards reduces gradually, ensure that the linearity precision of ram 1 in each position, thus ensures the machining accuracy of part.
Claims (4)
1. a ram deformation induced by gravity compensation arrangement, comprise ram, it is characterized in that: described ram is coated with the tie rod that many are stretched out its front end face, is provided with clamp nut in the front end of described tie rod, between described clamp nut and described ram front end face, be serially connected with multiple oil cylinder successively.
2. ram deformation induced by gravity compensation arrangement according to claim 1, is characterized in that: described oil cylinder comprises cylinder body and is located at the piston in described cylinder body, is positioned at the flange that the piston of cylinder body described in rear has the described cylinder body stretching into front.
3. ram deformation induced by gravity compensation arrangement according to claim 2, it is characterized in that: the piston inner hole between two described oil cylinders is provided with the oil groove being communicated with described cylinder cavity vertically, described tie rod is provided with the oilhole being communicated with described piston oil slot, and described tie rod connects electro-hydraulic proportional valve by oil pipe.
4. the ram deformation induced by gravity compensation arrangement according to claim 1 or 2 or 3, is characterized in that: endoporus at the bottom of the lateral wall and described oil cylinder of described piston is equipped with sealing ring, and the described piston inner hole being positioned at front end is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310523905.2A CN104325362A (en) | 2013-10-30 | 2013-10-30 | Ram self-weight deformation compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310523905.2A CN104325362A (en) | 2013-10-30 | 2013-10-30 | Ram self-weight deformation compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104325362A true CN104325362A (en) | 2015-02-04 |
Family
ID=52400232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310523905.2A Pending CN104325362A (en) | 2013-10-30 | 2013-10-30 | Ram self-weight deformation compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104325362A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011098410A (en) * | 2009-11-06 | 2011-05-19 | Mitsubishi Heavy Ind Ltd | Ram deflection correcting device and correcting method |
| CN202129682U (en) * | 2011-05-30 | 2012-02-01 | 上海三一精机有限公司 | Compensation mechanism for stress deformation of machine tool spindle box |
| CN102357842A (en) * | 2011-10-19 | 2012-02-22 | 上海三一精机有限公司 | Double compensation method and device for moving tilt of numerical control floor type boring-milling machine ram |
| CN102380802A (en) * | 2011-11-03 | 2012-03-21 | 芜湖恒升重型机床股份有限公司 | Ram deflection deformation compensation device |
| CN102513882A (en) * | 2011-12-01 | 2012-06-27 | 燕山大学 | Swingable deflection deformation compensation device for ram |
| CN202517333U (en) * | 2011-12-14 | 2012-11-07 | 中捷机床有限公司 | Ram deflection compensation mechanism for heavy numerical-control floor-type milling-boring machine |
| CN203557215U (en) * | 2013-10-30 | 2014-04-23 | 柳州正菱重型数控机床有限公司 | Compensation device for self-loaded deformation of ram |
-
2013
- 2013-10-30 CN CN201310523905.2A patent/CN104325362A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011098410A (en) * | 2009-11-06 | 2011-05-19 | Mitsubishi Heavy Ind Ltd | Ram deflection correcting device and correcting method |
| CN202129682U (en) * | 2011-05-30 | 2012-02-01 | 上海三一精机有限公司 | Compensation mechanism for stress deformation of machine tool spindle box |
| CN102357842A (en) * | 2011-10-19 | 2012-02-22 | 上海三一精机有限公司 | Double compensation method and device for moving tilt of numerical control floor type boring-milling machine ram |
| CN102380802A (en) * | 2011-11-03 | 2012-03-21 | 芜湖恒升重型机床股份有限公司 | Ram deflection deformation compensation device |
| CN102513882A (en) * | 2011-12-01 | 2012-06-27 | 燕山大学 | Swingable deflection deformation compensation device for ram |
| CN202517333U (en) * | 2011-12-14 | 2012-11-07 | 中捷机床有限公司 | Ram deflection compensation mechanism for heavy numerical-control floor-type milling-boring machine |
| CN203557215U (en) * | 2013-10-30 | 2014-04-23 | 柳州正菱重型数控机床有限公司 | Compensation device for self-loaded deformation of ram |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150204 |
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| RJ01 | Rejection of invention patent application after publication |