CN105081967A - Stand column for grinding bed - Google Patents
Stand column for grinding bed Download PDFInfo
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- CN105081967A CN105081967A CN201410213417.6A CN201410213417A CN105081967A CN 105081967 A CN105081967 A CN 105081967A CN 201410213417 A CN201410213417 A CN 201410213417A CN 105081967 A CN105081967 A CN 105081967A
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- column
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- supporting component
- gripper shoe
- top board
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Abstract
The invention discloses a stand column for a grinding bed. The stand column comprises a first supporting assembly, a second supporting assembly, a top board and a bottom board which are connected into a whole in an end-to-end manner, wherein the top board is installed at the top ends of the first supporting assembly and the second supporting assembly, and the bottom board is installed at the bottom ends of the first supporting assembly and the second supporting assembly. Compared with the prior art, the whole stand column for the grinding bed is in a gantry shape; the two supporting assemblies are adopted for firm supporting, and various reinforcement pieces are additionally arranged, so that the rigidity and stability of the whole stand column are improved, the probability of deformation of the stand column caused by heat of the grinding bed is reduced, the machining precision of the grinding bed is ensured, and the service life of the whole grinding bed is prolonged; by means of improvement on the stand column structure, two grinding head devices can be stored inside or hung outside the stand column at the same time, so that the grinding bed is suitable for machining of workpieces of various types, the workpiece clamping frequency is reduced, the grinding efficiency of the grinding bed is improved, occupied area is reduced, the service space of the grinding bed is enlarged, and accordingly the stand column has quite wide application prospects.
Description
Technical field
The present invention relates to grinding machine components, specifically, relate to a kind of column for grinding machine, belong to digital control processing field.
Background technology
Grinding technique and grinding machine occupy extremely important position in machinery manufacturing industry, and grinding technique development is very fast, plays extremely important effect in machining.Along with the increase of high accuracy, high rigidity machine components quantity, and the development of hot investment casting and precision forging technology, the performance of grinding machine, kind and output are all constantly improving and are increasing.Grinding machine is the class that in all kinds of metal cutting basis, kind is maximum, and main Types has cylindrical grinder, internal grinder, surface grinding machine, centerless grinder, cutter and tool grinding machine etc.The development trend of current plain grinding turns to shaping, step, incision, fast jitter, the processing of three-dimensional space curve surfacing, and numerical control is an importance of grinding machine development, and numerical control can realize automation, the high efficiency of lathe work better.
Numerically control grinder can be used for the inside and outside face of cylinder of grinding, taper seat, plane, helicoid, spline, gear, guide rail, cutter and various forming faces etc.Divide according to the process applications of grinding machine and have numerical control external cylindrical grinding machine, numeral-controlled internal grinder, digital control plain surface grinding machine, numerical control tool grinder, CNC jig grinding machine, grinding center etc.
Numerically control grinder generally comprises base unit, auxiliary unit and digital control system, and digital control system controls base unit and auxiliary unit.Base unit comprises base, grinding head device, workbench, lathe bed, planker, column etc., and its design and manufacturing technology is the basic of guarantee grinding machine quality; Auxiliary unit comprises quick clamping device, cutting fluid feed system, security protection process etc.
Part based on column, grinding head device is arranged on column by planker, therefore the safety of column and the stable machining accuracy directly affecting grinding machine, but there is following several large defect in existing grinding machine central post: 1, existing grinding machine central post mostly is single-column structure, a support column is only had to support in column, column is only connected with grinding machine body by single support column, and the type column easily produces thermal deformation makes the static geometric accuracy of lathe change, thus affects the machining accuracy of grinding machine.2, existing column is generally the corresponding grinding head device of a column, or by crossbeam, multiple grinding head device is installed between multiple column, a kind of digital control fixed-beam gantry grinding machine that such as Chinese patent CN2009203118616 provides, this grinding machine is provided with two bistriques, two bistriques are slided on crossbeam by planker, cross beam frame is between two columns, the displacement of such two bistriques is the gap length between two columns, when the length of workpiece or width are than distance between two columns, such workpiece just cannot machined with on the type grinding machine, and this column is too much, be unfavorable for processing large area workpiece, take Grinder bench area, whole grinding machine is caused to take production site large.3, grinding head device is arranged on column by planker, particularly when single column, planker and grinding head device are overall external hanging type on column, vertically moving of grinding head device is retrained by rail plate, planker arranges guide rail, the hand reductor of large handwheel is relied on to drive feed screw nut thus make planker and grinding head device integral elevating, the transverse shifting of grinding head device coordinates slip by adopting V-way to add railway carriage or compartment bar between grinding head device with planker, the guide rail that what in the mounting means of this grinding head device and column, holding capacity was maximum is on planker, guide rail difficulty of processing on planker is large, its error cannot detect, the poor rigidity of whole grinding machine can be caused like this, anti-poor stability, the injustice of whole table slide nearly 0.005 ~ 0.007mm before and after work, gap play simultaneously between the concentricity of bistrique and main shaft causes work pieces process to have curl, bistrique is sagging, emery wheel utilization rate is low, and the mounting means of this type can take the space of whole grinding machine, the work area of whole grinding machine is reduced.Therefore, need high, the stable high column being simultaneously applicable to installing dissimilar bistrique of a kind of rigidity badly, thus improve rigidity and the stability of whole grinding machine.
Summary of the invention
For the problems referred to above that prior art exists, the object of this invention is to provide a kind of column for grinding machine, by changing the overall structure of column, the rigidity of column and stability being improved, thus improves whole grinding machine rigidity and stability.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of column for grinding machine, comprise: the first supporting component, the second supporting component, top board and base plate, first supporting component, the second supporting component, top board and base plate head and the tail link into an integrated entity, mounting of roof plate is in the top ends of the first supporting component and the second supporting component, base plate is arranged on the bottom of the first supporting component and the second supporting component, and the first supporting component, the second supporting component are connected with grinding machine with base plate simultaneously.
Preferably, whole column is flame, is arranged on grinding machine by the first supporting component, the second supporting component and base plate, increases lifting surface area, improves rigidity and the stability of column.
Preferably, first supporting component comprises the first side plate, two first connecting plates and the first gripper shoe further, first side plate, two first connecting plates and the first gripper shoe are connected around formation one hollow cavity at vertical direction successively, and the top ends of the first gripper shoe is connected with top board and base plate respectively with bottom.
More preferably, the first gripper shoe comprises at least one connector further, and connector is removed material and formed in the first gripper shoe, and connector is distributed in the first gripper shoe, and connector is communicated with hollow cavity.
Preferably, second supporting component comprises the second gripper shoe and fixed head further, the top ends of second gripper shoe the same side is connected with top board and base plate respectively with bottom, and the opposite side bottom of the second gripper shoe is connected with fixed head, by fixed head by this stud location on grinding machine.
More preferably, this fixed head is provided with at least one locating hole further, by locating hole by whole stud location on grinding machine.
Another object of the present invention is to provide a kind of column for grinding machine, column not easily deforms or breakage phenomenon, the stability of column and rigidity improve, the column of inventor to above-mentioned arbitrary structure improves, whole column arranges reinforcement, strengthen the stability of column and rigidity, whole column is not easily deformed phenomenon, thus improves grinding machine rigidity and the grinding machine stability of whole grinding machine further.
Preferably, reinforcement comprises horizontal bar, brace rod and reinforcement, and horizontal bar is arranged on top board and base plate, and brace rod is arranged on the first side plate, and reinforcement is arranged in the first gripper shoe, thus strengthens rigidity and the stability of the enhancing of whole column.
More preferably, the length of horizontal bar is consistent with the length of top board, top board is consistent with floor length, top board is vertical with the both sides of base plate arranges horizontal bar, the both ends of horizontal bar connect the first gripper shoe of the first supporting component and the second gripper shoe of the second supporting component, prevent top board and base plate from deforming or breakage phenomenon.
More preferably, the cross section of top board and base plate is I shape.
More preferably, brace rod is distributed on the plate face of close hollow cavity on the first side plate, makes whole first side plate strengthen rigidity and stability.
More preferably, brace rod is cross.
More preferably, reinforced bag sand well, in the side near the first connecting plate of the first gripper shoe, makes whole first gripper shoe strengthen rigidity and stability.
More preferably, reinforcement is in zigzag.
Another object of the present invention is to provide a kind of column for grinding machine, two grinding head devices installed by this column simultaneously, two grinding head device internal memory external hanging types are arranged on column, save floor occupying area, improve the grinding efficiency of whole grinding machine, improvement made by the column of inventor to above-mentioned arbitrary structure, be specially: column comprises one first bistrique installation component and one second bistrique installation component further, first bistrique installation component and the second bistrique installation component are arranged on the first support body assembly and the second supporting component, the first grinding head device on grinding machine and the second grinding head device are arranged on column respectively by the first bistrique installation component and the second bistrique installation component simultaneously.
Preferably, the first gripper shoe, top board, the second gripper shoe and base plate are around being connected to form a container cavity, and the first grinding head device is placed in container cavity by the first bistrique installation component memory type, vertically moves along the first supporting component and the second supporting component.
Preferably, first bistrique installation component is arranged on the same side of the first supporting component and the second supporting component, first grinding head device installation component comprises two main guide rails and two and teaches rail, two main guide rails and two teach rail to be distributed in the first gripper shoe and the second gripper shoe respectively, first gripper shoe is removed material and form a main guide rail and a guidance rail, second gripper shoe is removed material and form another main guide rail and another guidance rail, each teaches rail to be arranged on corresponding main guide rail, first grinding head device teaches rail vertically moving along the first supporting component and the second supporting component by two main guide rails and two.
More preferably, two main guide rails are symmetrical in the first gripper shoe and the second gripper shoe.
More preferably, two teach rail symmetrical in the first gripper shoe and the second gripper shoe.
More preferably, main guide rail is stepped with the cross section of guidance rail in the first gripper shoe/the second gripper shoe.
More preferably, the spacing between two main guide rails is less than the spacing between two guidance rails.
More preferably, two main guide rails and two teach the length of rail consistent with the length of the first gripper shoe and the second gripper shoe.
Preferably, second bistrique installation component comprises a septal branch fagging and two side rails, septal branch fagging extends to form from the side of the second gripper shoe, two side rails are symmetricly set on the both sides of septal branch fagging, second grinding head device is arranged on the second supporting component by two side rails external hanging types, is vertically moved along the second supporting component by two side rails.
More preferably, the length of septal branch fagging is less than the length of the second gripper shoe, and the top of septal branch fagging is concordant with the top of the second gripper shoe.
More preferably, septal branch fagging comprises a supporting walls further, and this supporting walls is concave shaped, thus is that the second grinding head device forms parking space.
More preferably, both sides rail length is consistent with the length of septal branch fagging.
More preferably, the cross section of two side rails is rectangle.
Compared with prior art, column for grinding machine provided by the invention, overall in flame, it adopts two groups of supporting component firm support, and on column, increase various reinforcement, the rigidity of whole column and stability being improved, reducing the distortion of column because causing by grinding machine thermal deformation, ensure the machining accuracy of grinding machine, extend the service life of whole grinding machine; Improved by column structure, two grinding head devices can be arranged on column by internal memory external hanging type simultaneously, be suitable for polytype work pieces process, reduce clamping workpiece number of times, improve the grinding efficiency of whole grinding machine, save floor occupying area, increase the usage space of grinding machine, therefore its application prospect is very wide simultaneously.
Accompanying drawing explanation
Fig. 1 is the stereogram of a kind of preferred embodiment of the column for grinding machine provided by the invention;
Fig. 2 is the side view of a kind of preferred embodiment of the column for grinding machine provided by the invention;
Fig. 3 is the schematic diagram of a kind of preferred embodiment of the column for grinding machine provided by the invention.
Detailed description of the invention
Do to illustrate in detail, intactly further to the present invention below in conjunction with embodiment and accompanying drawing.
Fig. 1 to Fig. 3, for provided by the invention for a kind of preferred embodiment of grinding machine.As shown in Figure 1 to Figure 3, column comprises the first supporting component 10, second supporting component 20, top board 30 and base plate 40, first supporting component 10, second supporting component 20, top board 30 and base plate 40 head and the tail link into an integrated entity formation one container cavity, top board 30 is arranged on the top ends of the first supporting component 10 and the second supporting component 20, and base plate 40 is arranged on the bottom of the first supporting component 10 and the second supporting component 20.Whole pillar construction is flame, can adopt forging type manufacture, the first supporting component 10 and the second supporting component 20 firm support, make whole column not easily because of grinding machine be heated produce distortion.
First supporting component 10 comprises the first side plate 11, two first connecting plate 12 and the first gripper shoe 13 further, two first connecting plates 12 oppose and arrange, two first connecting plates 12 connect the first side plate 11 and the first gripper shoe 13, first side plate 11, two first connecting plate 12 is connected with top board 30 and base plate 40 with bottom respectively with the top ends that the first gripper shoe 13 is connected around formation one hollow cavity 101, first gripper shoe 13 at vertical direction.First gripper shoe 13 comprises at least one connector 131 further, and connector 131 is removed material and formed in the first gripper shoe 13, and connector 131 is distributed in the first gripper shoe 13, and connector 131 is communicated with hollow cavity 101.
Second supporting component 20 comprises the second gripper shoe 21 and fixed head 22 further, the top ends of second gripper shoe 21 the same side is connected with top board 30 and base plate 40 respectively with bottom, the opposite side bottom of the second gripper shoe 21 is connected with fixed head 22, by fixed head 22 by this stud location on grinding machine.This fixed head 22 is provided with at least one locating hole 221 further, by locating hole 221 by whole stud location on grinding machine.
In order to improve stability and the rigidity of column further, prevent column from deforming or breakage phenomenon, the column of inventor to above-mentioned arbitrary structure improves, whole column arranges reinforcement 50, strengthen stability and the rigidity of column, whole column is not easily deformed phenomenon, thus improves rigidity and the grinding machine stability of whole grinding machine further.
Reinforcement 50 comprises horizontal bar 51, brace rod 52 and reinforcement 53 further, and horizontal bar 51 is arranged on top board 30 and base plate 40, and horizontal bar 51 is distributed in the both sides of top board 30 and base plate 40, prevents top board 30 and/or base plate 40 from deforming or breakage phenomenon; Brace rod 52 is arranged on the first side plate 11, and brace rod 52 is distributed on the first side plate 11 and is formed on the plate face of hollow cavity 101, prevents the first side plate 11 from reducing because forming hollow cavity 101 rigidity; Reinforcement 53 is arranged in the first gripper shoe 13, and reinforcement 53 is distributed in the side near the first connecting plate 12 of the first gripper shoe 13, strengthens rigidity and the stability of the first gripper shoe 13, thus strengthens rigidity and the stability of whole column.
The length of horizontal bar 51 is consistent with the length of top board 30, top board 30 is consistent with base plate 40 length, top board 30 is vertical with the both sides of base plate 40 arranges horizontal bar 51, the cross section of such top board 30 and base plate 40 is all I-shaped, the both ends of horizontal bar 51 connect the first gripper shoe 13 of the first supporting component 10 and the second gripper shoe 21 of the second supporting component 20
Fig. 3 is the schematic diagram of a kind of preferred embodiment of the column for grinding machine provided by the invention.As shown in Figure 3, in order to improve the grinding efficiency of whole grinding machine, grinding machine is arranged two grinding head devices 1, 2 are arranged on column, two grinding head devices 1, 2 internal memory external hanging types are arranged on column, save floor occupying area, improvement made by the column of inventor to above-mentioned arbitrary structure, be specially: column comprises one first bistrique installation component 60 and one second bistrique installation component 70 further, first bistrique installation component 60 and the second bistrique installation component 70 are arranged on the first support body assembly 10 and the second supporting component 20, first grinding head device 1 is arranged on the first supporting component 10 by the first bistrique installation component 60 memory type, second supporting component 20, top board 30 and base plate 40 head and the tail link into an integrated entity and are formed in container cavity, second grinding head device 2 is arranged on the second supporting component 20 of column by the second bistrique installation component 20 is plug-in.Two grinding head devices 1,2 can be all grinding head device of the same type, as Vertical Mill head unit or horizontal wheelhead device, also can be dissimilar grinding head device, and preferably the first grinding head device 1 is horizontal wheelhead device, and the second grinding head device 2 is Vertical Mill head unit.
First bistrique installation component 60 is arranged on the same side of the first supporting component 10 and the second supporting component 20, first bistrique installation component 60 comprises two main guide rails 61 and two and teaches rail 62, two main guide rails 61 and two teach rail 62 to be distributed in the first gripper shoe 13 and the second gripper shoe 21 respectively, one main guide rail 61 and teaches rail 62 in the first gripper shoe 13, remove material formation, another main guide rail 61 and another guidance rail 62 are removed material and are formed in the second gripper shoe 21, each teaches rail 62 to be arranged on corresponding main guide rail 61, first grinding head device 1 teaches rail 62 vertically moving along the first supporting component 10 and the second supporting component 20 by two main guide rails 61 and two.
Two main guide rails 61 and two are taught in each comfortable first gripper shoes 13 of rail 62 and the second gripper shoe 21 symmetrical, and two main guide rails 61 and two teach rails 62 to be arranged on the first gripper shoe 13 and the second gripper shoe 21 near the side of top board 30.Main guide rail 61 is stepped with the cross section of guidance rail 62 in the first gripper shoe 13/ second gripper shoe 21, and the spacing between two main guide rails 61 is less than the spacing between two guidance rails 62.Two main guide rails 61 and two teach the length of rail 62 consistent with the length of the first gripper shoe 13 and the second gripper shoe 21, and such first grinding head device 1 relies on corresponding elevating mechanism on grinding machine to teach rail 62 to vertically move along the total height of the first supporting component 10 and the second supporting component 20 by two main guide rails 61 and two.
Second bistrique installation component 70 comprises septal branch fagging 71 and two side rails 72, septal branch fagging 71 extends to form from the side of the second gripper shoe 21, two side rails 72 are symmetricly set on the both sides of septal branch fagging 71, second grinding head device 2 is arranged on the second supporting component 20 by two side rails 72 external hanging types, is vertically moved along the second supporting component 20 by two side rails 72.
The length of septal branch fagging 71 is less than the length of the second gripper shoe 21, and the top of septal branch fagging 71 is concordant with the top of the second gripper shoe 21.Septal branch fagging 71 comprises a supporting walls 711 further, and this supporting walls 711 is concave shaped, thus is that the second grinding head device 2 forms parking space.The cross-sectional area that both sides lead 72 is rectangle, two side rails 72 length are consistent with the length of septal branch fagging 71, second grinding head device 2 is arranged on the second supporting component 20 by two side rails 72 external hanging types, relies on corresponding elevating mechanism on grinding machine to vertically move along the second supporting component 20.
First grinding head device 1 and the second grinding head device 2 are respectively by the first bistrique installation component 60 and the second bistrique installation component 70 is relatively independent is separately arranged on column, and elevating mechanism corresponding on grinding machine controls the first grinding head device 1 and the second grinding head device 2 vertically moving on column.
Finally be necessary described herein: above embodiment is only for being described in more detail technical scheme of the present invention; can not be interpreted as limiting the scope of the invention, some nonessential improvement that those skilled in the art's foregoing according to the present invention is made and adjustment all belong to protection scope of the present invention.
Claims (10)
1. the column for grinding machine, it is characterized in that, comprise: the first supporting component, the second supporting component, top board and base plate, first supporting component, the second supporting component, top board and base plate head and the tail link into an integrated entity, mounting of roof plate is in the top ends of the first supporting component and the second supporting component, and base plate is arranged on the bottom of the first supporting component and the second supporting component.
2. the column for grinding machine according to claim 1, is characterized in that: whole column is flame, is arranged on grinding machine by the first supporting component, the second supporting component and base plate.
3. the column for grinding machine according to claim 1, it is characterized in that: the first supporting component comprises the first side plate, two first connecting plates and the first gripper shoe further, first side plate, two first connecting plates and the first gripper shoe are connected around formation one hollow cavity at vertical direction successively, and the top ends of the first gripper shoe is connected with top board and base plate respectively with bottom.
4. the column for grinding machine according to claim 3, is characterized in that: the first gripper shoe comprises at least one connector further, and connector is removed material and formed in the first gripper shoe, and connector is distributed in the first gripper shoe, and connector is communicated with hollow cavity.
5. the column for grinding machine according to claim 3, it is characterized in that: the second supporting component comprises the second gripper shoe and fixed head further, the top ends of second gripper shoe the same side is connected with top board and base plate respectively with bottom, the opposite side bottom of the second gripper shoe is connected with fixed head, by fixed head by this stud location on grinding machine.
6. the column for grinding machine according to claim 5, is characterized in that: fixed head is provided with at least one locating hole further, by locating hole by whole stud location on grinding machine.
7. the column for grinding machine according to claim 5, it is characterized in that: column comprises reinforcement further, reinforcement comprises horizontal bar, brace rod and reinforcement, and horizontal bar is arranged on top board and base plate, brace rod is arranged on the first side plate, and reinforcement is arranged in the first gripper shoe.
8. the column for grinding machine according to claim 7, it is characterized in that: the length of horizontal bar is consistent with the length of top board, top board is consistent with floor length, top board is vertical with the both sides of base plate arranges horizontal bar, and the both ends of horizontal bar connect the first gripper shoe of the first supporting component and the second gripper shoe of the second supporting component.
9. the column for grinding machine according to claim 8, is characterized in that: the cross section of top board and base plate is I shape.
10. the column for grinding machine according to claim 7, is characterized in that: brace rod is cross, and brace rod is distributed in the first side plate and is formed on the plate face of hollow cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213417.6A CN105081967A (en) | 2014-05-20 | 2014-05-20 | Stand column for grinding bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213417.6A CN105081967A (en) | 2014-05-20 | 2014-05-20 | Stand column for grinding bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105081967A true CN105081967A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410213417.6A Pending CN105081967A (en) | 2014-05-20 | 2014-05-20 | Stand column for grinding bed |
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| Country | Link |
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| CN (1) | CN105081967A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6228007B1 (en) * | 1999-05-05 | 2001-05-08 | Honsberg Lamb Sonderwerkzeugmaschinen Gmbh | Machine tool for processing crankshafts |
| CN102259282A (en) * | 2010-05-28 | 2011-11-30 | 湘潭三峰数控机床有限公司 | Grinding machining center |
| CN102689263A (en) * | 2012-06-15 | 2012-09-26 | 湘潭三峰数控机床有限公司 | Symmetric abrasive machining center with multiple carriages and double main shafts |
| CN202491070U (en) * | 2011-12-27 | 2012-10-17 | 东莞市铭力数控设备制造有限公司 | Fixed-beam gantry wire rail machine tool possessing improved pedestal wire rails |
| CN103144026A (en) * | 2013-03-08 | 2013-06-12 | 湘潭三峰数控机床有限公司 | Numerical control grinding machine with built-in gantry upright post, planker and grinding head |
| CN204075998U (en) * | 2014-05-20 | 2015-01-07 | 湘潭三峰数控机床有限公司 | A kind of column for grinding machine |
-
2014
- 2014-05-20 CN CN201410213417.6A patent/CN105081967A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6228007B1 (en) * | 1999-05-05 | 2001-05-08 | Honsberg Lamb Sonderwerkzeugmaschinen Gmbh | Machine tool for processing crankshafts |
| CN102259282A (en) * | 2010-05-28 | 2011-11-30 | 湘潭三峰数控机床有限公司 | Grinding machining center |
| CN202491070U (en) * | 2011-12-27 | 2012-10-17 | 东莞市铭力数控设备制造有限公司 | Fixed-beam gantry wire rail machine tool possessing improved pedestal wire rails |
| CN102689263A (en) * | 2012-06-15 | 2012-09-26 | 湘潭三峰数控机床有限公司 | Symmetric abrasive machining center with multiple carriages and double main shafts |
| CN103144026A (en) * | 2013-03-08 | 2013-06-12 | 湘潭三峰数控机床有限公司 | Numerical control grinding machine with built-in gantry upright post, planker and grinding head |
| CN204075998U (en) * | 2014-05-20 | 2015-01-07 | 湘潭三峰数控机床有限公司 | A kind of column for grinding machine |
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Application publication date: 20151125 |