CN103350364A - Gantry machining center with high rigidity and large torque - Google Patents

Gantry machining center with high rigidity and large torque Download PDF

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Publication number
CN103350364A
CN103350364A CN2013102254722A CN201310225472A CN103350364A CN 103350364 A CN103350364 A CN 103350364A CN 2013102254722 A CN2013102254722 A CN 2013102254722A CN 201310225472 A CN201310225472 A CN 201310225472A CN 103350364 A CN103350364 A CN 103350364A
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China
Prior art keywords
main shaft
machining center
synchronous pulley
gantry machining
connects
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Pending
Application number
CN2013102254722A
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Chinese (zh)
Inventor
王元庆
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Cnc Machine Tool Co Ltd Hangzhou Days
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Cnc Machine Tool Co Ltd Hangzhou Days
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Application filed by Cnc Machine Tool Co Ltd Hangzhou Days filed Critical Cnc Machine Tool Co Ltd Hangzhou Days
Priority to CN2013102254722A priority Critical patent/CN103350364A/en
Publication of CN103350364A publication Critical patent/CN103350364A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a machining center, and in particular to a gantry machining center with high rigidity and large torque. The gantry machining center mainly solves the technical problems existing in the prior art that a high-low gear reduction gearbox is expensive, a high speed gear works in the limiting condition, the failure rate is high, and the cost of using and maintenance is high; requirements of processing at the reduction ratio of 1:2/1:3, and the like cannot be satisfied; the rigidity of a main shaft of a vertical processing is bad, tool changing failure frequency is high, and the like. The gantry machining center comprises a lathe bed, wherein the lathe bed is provided with a vertical column and a working table; a cross beam is arranged at the upper end of the vertical column; a tool magazine is arranged at one end of the cross beam; the cross beam is provided with a cross beam guide rail, a sliding saddle is slidably connected with the cross beam; the sliding saddle is provided with a ram of a high rigid guide rail structure; the ram is provided with the main shaft and a tool hitting cylinder; the main shaft is connected with a main motor through a reducing gear with wheels; the main shaft is further provided with a main shaft positioning device; the gantry machining center is provided with an electrical and numerical control system.

Description

High rigidity high pulling torque gantry machining center
Technical field
The present invention relates to a kind of machining center, especially relate to a kind of high rigidity high pulling torque gantry machining center.
Background technology
Existing machining center exists the lathe main axis device rigidity bad; Main shaft is when being lower than rated speed, and main motor current diminishes along with rotating speed is declined to become ratio, causes the bad and energy waste of stock-removing efficiency.
Existing machining center is mainly used in the processing of non-ferrous metal part, ferrous metal part, novel difficult-to-machine material part, for machining accuracy and the stock-removing efficiency that improves part, prior art is toward the high speed and super precision future development, the rotating speed of main shaft is generally at 8000-15000rpm, and electric main shaft reaches more than the 80000rpm; But the cutting moment of torque and effective power are little during the slow-speed of revolution, can not adapt to the requirement of ferrous metal roughing and novel difficult-to-machine material processing.
Prior art adopts high-power main motor to remedy in order to satisfy simultaneously the processing of high speed and high precision processing and low-speed big usually, cause large horse traction pony to cause energy waste, so the problems referred to above fails effectively to be improved; Also can adopt apolegamy high and low shift deceleration device, top-gear ratio is 1:1, is used for high speed and high precision processing, and low-grade speed ratio 1:4 is used for the large load processing of low speed.There is following problem in the machining center of configuration high and low shift reduction box like this:
1. it is high that high and low shift reduction box price, high gear are under the limiting condition job failure rate, and the use and maintenance cost is high;
2. the machining center with the high and low shift reduction box is used for thick fine finishining, and precision can not keep for a long time, in fact fails to reach the blanket purpose of the thick fine finishining of ferrous metal.
3. adopt 1:1/1:4 high and low shift reduction box can not satisfy the requirement of other speed reducing ratio processing; Multiple speed ratio machining center is matched in the segmentation exploitation, can effectively improve the defective of Digit Control Machine Tool homogeneity;
4. existing machining center is used for the heavy load machining, exists rigidity and moment of torsion not enough, and the problems such as Tool Change Error frequency height need to have comprehensive solution.
Summary of the invention
The invention provides a kind of high accuracy high pulling torque gantry machining center, for ferrous metal processing provides high efficiency, the Digit Control Machine Tool of low energy consumption mainly solves prior art and adopts high-power main motor to cause energy waste; Adopt high and low shift reduction box price, the use and maintenance cost is high; Be used for the heavy load stock-removing machine and exist rigidity not enough, the Tool Change Error frequency is high; Be used for the problems such as ferrous metal processing efficient is low, energy consumption is large.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
A kind of high rigidity high pulling torque gantry machining center of the present invention, comprise lathe bed, described lathe bed is provided with column, workbench, and the column upper end is provided with crossbeam, one end of crossbeam is provided with tool magazine, crossbeam is provided with beam guideway, slidely connects saddle on the beam guideway, and saddle is provided with the ram of high rigid track configuration, ram is provided with main shaft, knife striking cylinder, main shaft is connected with main motor by the belt wheel deceleration device, also is provided with main shaft positioning device on the main shaft, and gantry machining center is provided with electric and digital control system.
There is the defective of homogeneity in Digit Control Machine Tool market at present, and machine tool structure is identical with the scope of application, and a manufacturing industry sexual demand can not obtain to satisfy effectively.Comprising: although machining center can be applied to the thick fine finishining of ferrous metal, be used for that ferrous metal roughing exists that moment of torsion is little, underpower, efficient is low, energy consumption is large problem; The high and low shift reduction boxes such as apolegamy 1:2/1:3/1:4/1:8, the price maintenance cost is high.Exploitation is applicable to ferrous metal processing, rotating speed is in the 80-4000rpm/40-2000rpm/20-1000rpm scope, be applicable to respectively the thick fine finishining/roughing of ferrous metal/heavy load processing, high rigidity high pulling torque machining center can effectively improve the defective of machining center homogeneity.
As preferably, described main motor connects main shaft by main motor small pulley, Timing Belt, the large belt wheel of main shaft.Adopt the 1:2 synchronous pulley to slow down, main-shaft torque improves 2 times, and the speed of mainshaft is applicable to the thick fine finishining of ferrous metal in the 80-4000rpm scope, through engineer testing: be used for roughing production efficiency and improve more than 50% energy-conservation about 23%; And be applicable to ferrous metal fine finishining more than 90%, all the other High-speed machining can be matched the main shaft speed increaser of maximum speed 12000rpm, have applied widely, simple in structure, the reliable advantage of stable working.
As preferably, described main motor connects the first synchronous pulley by main motor small pulley, Timing Belt, and the first synchronous pulley connects the second synchronous pulley by the first axle body, and the second synchronous pulley connects main shaft by the large belt wheel of main shaft.Main shaft obtains the two-stage belt wheel and slows down, and the moment of torsion of output is larger.Adopt 1:4 two-stage synchronous pulley to slow down, main-shaft torque is brought up to 4 times, the speed of mainshaft is in the 40-2000rpm scope, be applicable to ferrous metal roughing, through engineer testing: production efficiency improves more than 80%, and energy-conservation about 33%, deleted redundancy function than adopting 1:4 high and low shift reduction box, work more reliable, failure rate is low, purchase cost and maintenance cost are low.
As preferably, described main motor connects the first synchronous pulley by main motor small pulley, Timing Belt, the first synchronous pulley is connected with the first gear by the first axle body, the first gear is engaged with the second gear, the second gear connects the 3rd gear by the second axle body, and the 3rd gear connects main shaft by the engagement mainshaft gear.Can obtain the 1:8 speed reducing ratio.Main motor run up adopt the belt wheel primary speed-down than gear first stage slow down good reliability, vibration is little, noise is low, the scope of application is the same.
As preferably, described main motor connects the first synchronous pulley by main motor small pulley, Timing Belt, the first synchronous pulley connects the second synchronous pulley by the first axle body, the second synchronous pulley connects the 3rd synchronous pulley by Timing Belt, the 3rd synchronous pulley connects the 4th synchronous pulley by three-axis body, and the 4th synchronous pulley connects main shaft by the large belt wheel of main shaft.Can obtain the speed reducing ratio of 1:8, be applicable to high pulling torque heavy boring, large diameter borehole, the coarse pitch tapping of ferrous metal, be applicable to the rough milling of increasing difficult-to-machine material, heavy boring.
As preferably, described main shaft positioning device comprises the sense switch support that main shaft one side arranges, and the sense switch support is fixed with sense switch, and sense switch is approach switch or optoelectronic switch.The main shaft signal that sense switch obtains is transferred to main motor encoder, has eliminated transmission chain error.
As preferably, described main shaft positioning device comprises the spindle encoder that is fixed on the main shaft.Simple and reliable for structure, be the main shaft positioning device of another form.
As preferably, described main shaft positioning device comprises mount pad, the base plate that is arranged on main shaft one side, base plate is provided with the coding axle, be connected with the encoder hold-in range wheel on the coding axle, the encoder hold-in range wheel connects main shaft by Timing Belt, and the encoder hold-in range wheel connects encoder by the encoder mount pad.The structure flexible configuration.
Above several main shaft positioning device, be mainly solve main motor apolegamy reduction box after because the driving-chain from main motor to main shaft is elongated, have design error, part's machining errors, the rigging error of deceleration device and use after wear error.Because common encoder is installed on the main motor, the error of above driving-chain is brought error to main shaft orientation, and the positioning accuracy when having influence on the main shaft tool changing is brought high-frequency Tool Change Error.
Because the structure main development direction of existing machining center is high speed and super precision, just take into account for the roughing of ferrous metal.
As preferably, the guide rail of described ram is the straight ball-guide larger than the guide rail specification of workbench, or the higher straight line roller guide of rigidity, or more line slideway.
The present invention is on the basis of finite element analysis and lathe rigidity mensuration, the lathe rigidity was not enough when discovery was cut in heavy load, especially the main shaft device rigidity is not enough, weakest link is that saddle contacts the rigidity deficiency with the guide rail of ram, ram gib adopts specification larger for this reason, rigidity is better, and more line slideway is conducive to improve saddle and ram gib contact stiffness.When the present invention has carried out the optimization of complete machine rigidity to lathe bed, saddle, workbench, column, main shaft main member, also improved the contact stiffness of saddle and ram gib.
As preferably, the guide rail of described ram is more more than the rail plate of workbench, or the wide guide rail of the ram larger than table slide width.
As preferably, the rotating speed of described main motor is 6000rpm/8000rpm/10000rpm/12000rpm/15000rpm.
As preferably, described main shaft lower end is equipped with the main shaft speed increaser that rotating speed is 6000rpm/8000rpm/10000rpm/12000rpm.
The present invention has high rigidity, high efficiency, highly reliable; Low-cost, high pulling torque and energy-conservation comprehensive beneficial effect.
1. carried out the machine tool structure improvement in finite element analysis and rigidity mensuration basis: complete machine structure is optimized, and static rigidity is improved; Main spindle box contacts rigidity with the guide rail of column and is improved;
2. mix deceleration with belt wheel by belt wheel, when main motor speed was lower than rated speed, the cutting moment of torque improved 2-8 doubly, improves 50-80% by process determining production efficiency;
3. by the choose reasonable speed reducing ratio, can make the speed of mainshaft satisfy the requirement of optimized cutting linear velocity, main motor is worked in the rated speed scope.Through process determining: the ferrous metal batch machining adopts respectively the machining center of different speed reducing ratio according to the principle of thick essence classification, can not only enhance productivity, and reasonably combined can energy-conservation 23-33%;
4. by the main shaft accurate-location device, efficiently solve the position error problem that spindle drive chain error causes, reduced the tool magazine Tool Change Error, improved the main shaft orientation technological problemses such as tapping, bore hole, improve the lathe integrity problem;
5. belt wheel and belt wheel mixing deceleration device have advantages of that transmission chain error is little, stable working, low cost, high reliability;
The present invention solves ferrous metal processing and novel hard-cutting material processing, the integrity problems such as the moment of torsion of existence and rigidity deficiency, main shaft orientation more fully in sum.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the embodiment of the invention 1;
Accompanying drawing 2 is plan structure schematic diagrames of Fig. 1;
Accompanying drawing 3 is structural representations of the main shaft of the embodiment of the invention 1;
Accompanying drawing 4 is plan structure schematic diagrames of Fig. 3;
Accompanying drawing 5 is a kind of structural representations of the embodiment of the invention 2;
Accompanying drawing 6 is plan structure schematic diagrames of Fig. 5;
Accompanying drawing 7 is structural representations of the main shaft of the embodiment of the invention 2;
Accompanying drawing 8 is structural representations of the main shaft of the embodiment of the invention 3;
Accompanying drawing 9 is structural representations of the main shaft of the embodiment of the invention 4;
Accompanying drawing 10 is structural representations of the main shaft of the embodiment of the invention 5;
Accompanying drawing 11 is structural representations of the main shaft of the embodiment of the invention 6.
Parts among the figure, position and numbering: lathe bed 1, column 2, workbench 3, crossbeam 4, tool magazine 5, beam guideway 6, saddle 7, straight ball-guide 8, ram 9, main shaft 10, knife striking cylinder 11, main motor 12, main motor small pulley 13, Timing Belt 14, the large belt wheel 15 of main shaft, the first synchronous pulley 16, the first axle body 17, the second synchronous pulley 18, the wide guide rail 19 of ram, the first gear 20, the second gear 21, the second axle body 22, the 3rd gear 23, mainshaft gear 24, the 3rd synchronous pulley 25, three-axis body 26, the 4th synchronous pulley 27, sense switch support 28, sense switch 29, spindle encoder 30, mount pad 31, base plate 32, coding axle 33, encoder hold-in range wheel 34, encoder mount pad 35, encoder 36.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment 1: the high rigidity high pulling torque gantry machining center of this example, such as Fig. 1, Fig. 2, comprise lathe bed 1, lathe bed is provided with column 2, workbench 3, the column upper end is provided with crossbeam 4, one end of crossbeam is provided with tool magazine 5, crossbeam is provided with beam guideway 6, slidely connect saddle 7 on the beam guideway, saddle is provided with the ram 9 of high rigid track configuration, and ram is provided with main shaft 10, knife striking cylinder 11, and main shaft is connected with main motor 12 by the belt wheel deceleration device, also be provided with main shaft positioning device on the main shaft, gantry machining center is provided with electric and digital control system.The guide rail of ram is the straight ball-guide 8 larger than the guide rail specification of workbench.Such as Fig. 3, Fig. 4, main motor 12 connects main shaft 10 by main motor small pulley 13, Timing Belt 14, the large belt wheel 15 of main shaft.Main shaft positioning device comprises the sense switch support 28 that main shaft 10 1 sides arrange, and the sense switch support is fixed with sense switch 29, and sense switch is approach switch or optoelectronic switch.
During use, workpiece is fixed on the workbench 3, adjusts the position of workbench by the screw mandrel of workbench, adjust again the position of main shaft 10 by straight ball-guide 8.After main motor 12 starts, by the transmission of main motor small pulley 13, Timing Belt 14, the large belt wheel 15 of main shaft, so that main shaft 10 starts working, thereby workpiece is processed.
Embodiment 2: the high rigidity high pulling torque gantry machining center of this example, such as Fig. 5, Fig. 6, comprise lathe bed 1, lathe bed is provided with column 2, workbench 3, the column upper end is provided with crossbeam 4, one end of crossbeam is provided with tool magazine 5, crossbeam is provided with beam guideway 6, slidely connect saddle 7 on the beam guideway, saddle is provided with the ram 9 of high rigid track configuration, and ram is provided with main shaft 10, knife striking cylinder 11, and main shaft is connected with main motor 12 by the belt wheel deceleration device, also be provided with main shaft positioning device on the main shaft, gantry machining center is provided with electric and digital control system.The guide rail of ram is the ram wide guide rail 19 larger than table slide width.Such as Fig. 7, main motor 12 connects the first synchronous pulley 16, the first synchronous pulleys by main motor small pulley 13, Timing Belt 14 and connects main shaft 10 by the first axle body 17 connections the second synchronous pulley 18, the second synchronous pulleys by the large belt wheel 15 of main shaft.Main shaft positioning device comprises the sense switch support 28 that main shaft 10 1 sides arrange, and the sense switch support is fixed with sense switch 29, and sense switch is approach switch or optoelectronic switch.
During use, workpiece is fixed on the workbench 3, adjusts the position of workbench by the screw mandrel of workbench, adjust again the position of main shaft 10 by the wide guide rail 19 of ram.After main motor 12 starts, by the transmission of main motor small pulley 13, Timing Belt 14, the first synchronous pulley 16, the second synchronous pulley 18, so that main shaft 10 starts working, thereby workpiece is processed.
Embodiment 3: the high rigidity high pulling torque gantry machining center of this example, such as Fig. 8, main shaft positioning device comprises the spindle encoder 30 that is fixed on the main shaft 10.
All the other are with embodiment 2.
Embodiment 4: the high rigidity high pulling torque gantry machining center of this example, such as Fig. 9, main shaft positioning device comprises mount pad 31, the base plate 32 that is arranged on main shaft 10 1 sides, base plate is provided with coding axle 33, be connected with encoder hold-in range wheel 34 on the coding axle, the encoder hold-in range wheel connects main shaft 10 by Timing Belt, and the encoder hold-in range wheel connects encoder 36 by encoder mount pad 35.
All the other are with embodiment 2.
Embodiment 5: the high rigidity high pulling torque gantry machining center of this example, such as Figure 10, main motor 12 connects the first synchronous pulley 16 by main motor small pulley 13, Timing Belt 14, the first synchronous pulley is connected with the first gear 20 by the first axle body 17, the first gear is engaged with the second gear 21, the second gear connects the 3rd gear 23, the three gears by the second axle body 22 and connects main shaft 10 by engagement mainshaft gear 24.
All the other are with embodiment 2.
During use, workpiece is fixed on the workbench 3, adjusts the position of workbench by the screw mandrel of workbench, adjust again the position of main shaft 10 by the wide guide rail 19 of ram.After main motor 12 starts, by the transmission of main motor small pulley 13, the first synchronous pulley 16, the first gear 20, the second gear 21, the 3rd gear 23, so that main shaft 10 starts working, thereby workpiece is processed.
Embodiment 6: the high rigidity high pulling torque gantry machining center of this example, such as Figure 11, main motor 12 connects the first synchronous pulley 16 by main motor small pulley 13, Timing Belt 14, the first synchronous pulley connects the second synchronous pulley 18 by the first axle body 17, the second synchronous pulley connects the 3rd synchronous pulley 25 by Timing Belt, the 3rd synchronous pulley connects the 4th synchronous pulley 27, the four synchronous pulleys by three-axis body 26 and connects main shaft 10 by the large belt wheel 15 of main shaft.
All the other are with embodiment 2.
During use, workpiece is fixed on the workbench 3, adjusts the position of workbench by the screw mandrel of workbench, adjust again the position of main shaft 10 by the wide guide rail 19 of ram.After main motor 12 started, the successively transmission by main motor small pulley 13, the first synchronous pulley 16, the second synchronous pulley 18, the 3rd synchronous pulley 25, the 4th synchronous pulley 27 so that main shaft 10 starts working, thereby was processed workpiece.
The above only is specific embodiments of the invention, but architectural feature of the present invention is not limited to this, and any those skilled in the art is in the field of the invention, and the variation of doing or modification all are encompassed among the claim of the present invention.

Claims (12)

1. one kind high rigidity high pulling torque gantry machining center, comprise lathe bed (1), it is characterized in that described lathe bed (1) is provided with column (2), workbench (3), the column upper end is provided with crossbeam (4), one end of crossbeam is provided with tool magazine (5), crossbeam is provided with beam guideway (6), slidely connect saddle (7) on the beam guideway, saddle is provided with the ram (9) of high rigid track configuration, ram is provided with main shaft (10), knife striking cylinder (11), main shaft is connected with main motor (12) by the belt wheel deceleration device, also is provided with main shaft positioning device on the main shaft, and gantry machining center is provided with electric and digital control system.
2. high rigidity high pulling torque gantry machining center according to claim 1 is characterized in that described main motor (12) connects main shaft (10) by main motor small pulley (13), Timing Belt (14), the large belt wheel of main shaft (15).
3. high rigidity high pulling torque gantry machining center according to claim 1, it is characterized in that described main motor (12) connects the first synchronous pulley (16) by main motor small pulley (13), Timing Belt (14), the first synchronous pulley connects the second synchronous pulley (18) by the first axle body (17), and the second synchronous pulley connects main shaft (10) by the large belt wheel of main shaft (15).
4. high rigidity high pulling torque gantry machining center according to claim 1, it is characterized in that described main motor (12) connects the first synchronous pulley (16) by main motor small pulley (13), Timing Belt (14), the first synchronous pulley is connected with the first gear (20) by the first axle body (17), the first gear is engaged with the second gear (21), the second gear connects the 3rd gear (23) by the second axle body (22), and the 3rd gear connects main shaft (10) by engagement mainshaft gear (24).
5. high rigidity high pulling torque gantry machining center according to claim 1, it is characterized in that described main motor (12) connects the first synchronous pulley (16) by main motor small pulley (13), Timing Belt (14), the first synchronous pulley connects the second synchronous pulley (18) by the first axle body (17), the second synchronous pulley connects the 3rd synchronous pulley (25) by Timing Belt, the 3rd synchronous pulley connects the 4th synchronous pulley (27) by three-axis body (26), and the 4th synchronous pulley connects main shaft (10) by the large belt wheel of main shaft (15).
6. high rigidity high pulling torque gantry machining center according to claim 1, it is characterized in that described main shaft positioning device comprises the sense switch support (28) that main shaft (10) one sides arrange, the sense switch support is fixed with sense switch (29), and sense switch is approach switch or optoelectronic switch.
7. high rigidity high pulling torque gantry machining center according to claim 1 is characterized in that described main shaft positioning device comprises the spindle encoder (30) that is fixed on the main shaft (10).
8. high rigidity high pulling torque gantry machining center according to claim 1, it is characterized in that described main shaft positioning device comprises mount pad (31), the base plate (32) that is arranged on main shaft (10) one sides, base plate is provided with coding axle (33), be connected with encoder hold-in range wheel (34) on the coding axle, the encoder hold-in range wheel connects main shaft (10) by Timing Belt, and the encoder hold-in range wheel connects encoder (36) by encoder mount pad (35).
9. high rigidity high pulling torque gantry machining center according to claim 1, the guide rail that it is characterized in that described ram (9) is the straight ball-guide (8) larger than the guide rail specification of workbench (3), or the higher straight line roller guide of rigidity, or more line slideway.
10. high rigidity high pulling torque gantry machining center according to claim 1 is characterized in that the guide rail of described ram (9) for more more than the rail plate of workbench (3), or the wide guide rail of the ram larger than table slide width (19).
11. high rigidity high pulling torque gantry machining center according to claim 1, the rotating speed that it is characterized in that described main motor (12) is 6000rpm/8000rpm/10000rpm/12000rpm/15000rpm.
12. high rigidity high pulling torque gantry machining center according to claim 1 is characterized in that described main shaft (10) lower end is equipped with the main shaft speed increaser that rotating speed is 6000rpm/8000rpm/10000rpm/12000rpm.
CN2013102254722A 2013-06-07 2013-06-07 Gantry machining center with high rigidity and large torque Pending CN103350364A (en)

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CN2013102254722A CN103350364A (en) 2013-06-07 2013-06-07 Gantry machining center with high rigidity and large torque

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103586698A (en) * 2013-10-23 2014-02-19 杭州大天数控机床有限公司 Machining center for gantry with four linear rails and ram
CN103586699A (en) * 2013-10-23 2014-02-19 杭州大天数控机床有限公司 High-rigidity square ram gantry machining center

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CN102886735A (en) * 2012-11-01 2013-01-23 上海机床厂有限公司 High and low-speed multifunctional headstock device
CN102909395A (en) * 2012-09-29 2013-02-06 山东鲁南机床有限公司 Vertical machining center main shaft box structure
CN203317114U (en) * 2013-06-07 2013-12-04 杭州大天数控机床有限公司 High-rigidity large-torque gantry machining center

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Publication number Priority date Publication date Assignee Title
US4651426A (en) * 1984-10-10 1987-03-24 Mauser-Werke Oberndorf Gmbh Portal type coordinate measuring machine
CN101988873A (en) * 2009-08-07 2011-03-23 上海齐宝数控机床制造有限公司 Processing machine tool for low-power sulphur print sample
CN201931308U (en) * 2011-01-30 2011-08-17 浙江雁峰数控机床有限公司 Large-torque rotary strong milling head
CN102423851A (en) * 2011-10-13 2012-04-25 杭州大天数控机床有限公司 Numerical control gantry pentahedral machine tool
CN102909395A (en) * 2012-09-29 2013-02-06 山东鲁南机床有限公司 Vertical machining center main shaft box structure
CN102886735A (en) * 2012-11-01 2013-01-23 上海机床厂有限公司 High and low-speed multifunctional headstock device
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103586698A (en) * 2013-10-23 2014-02-19 杭州大天数控机床有限公司 Machining center for gantry with four linear rails and ram
CN103586699A (en) * 2013-10-23 2014-02-19 杭州大天数控机床有限公司 High-rigidity square ram gantry machining center

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Application publication date: 20131016