CN202640099U - Bridge type numerical-control planar universal grinder structure - Google Patents
Bridge type numerical-control planar universal grinder structure Download PDFInfo
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- CN202640099U CN202640099U CN 201220153758 CN201220153758U CN202640099U CN 202640099 U CN202640099 U CN 202640099U CN 201220153758 CN201220153758 CN 201220153758 CN 201220153758 U CN201220153758 U CN 201220153758U CN 202640099 U CN202640099 U CN 202640099U
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Abstract
The utility model relates to a bridge type numerical-control planar universal grinder structure comprising a base, a cross beam, a sliding saddle, a sliding ram, a vertical partitioning plate, a connecting plate and a grinding head, wherein the base is provided with a working table; the cross beam is arranged on the base and can slide along a horizontal X-direction; the sliding saddle is arranged on the cross beam and can slide along a horizontal Y-direction; the sliding ram is arranged on the sliding saddle and can slide along a vertical Z-direction; the vertical partitioning plate is fixedly arranged at the lower end of the sliding ram; and the grinding head is fixedly connected with the vertical partitioning plate through the connecting plate and is rotated along with the vertical partitioning plate. By utilizing the bridge type numerical-control planar universal grinder structure disclosed by the utility model, a plurality of surfaces and even the oblique surface of a workpiece which is clamped for one time can be machined, so that the machining is simple and convenient, and the machining precision and the working efficiency are improved; and therefore, the grinder structure is rather practical.
Description
Technical field
The present invention relates to a kind of numerically controlled processing equipment, particularly a kind of bridge type numerical control gantry grinding machine of universal structure.
Background technology
At present, all adopt the movable workbench formula in the conventional grinding machine, by oil cylinder push-and-pull travelling table, table slide adopts V-flat pattern or two-V-type rail, it exists, and frictional force is large, the workbench carrying is low, and required thrust is large, stressed effect is bad, rapid traverse speed is unstable, and the problem such as impulsive force height.On the other hand, the machining spindle of conventional grinding machine generally is fixed on a position, adding man-hour, work piece is through clamped one time, can only carry out the grinding of single plane, if need again to carry out the grinding on a plurality of planes, such as left and right side mill, front and back sides mill, inclined-plane mill, must carry out multiple clamping just can machine, very inconvenient, so variety of problems all can cause mismachining tolerance, and the machining accuracy of part to be processed is reduced, affected the operating efficiency of grinding machine, this is quotidian in traditional manufacturing enterprise.And for large-scale workpiece and the large workpiece of weight, conventional grinding machine can't be processed at all, and this just need to have greater efficiency, comprehensive process equipment that precision is higher.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the defective that existing grinding machine exists, and a kind of bridge type numerical control gantry grinding machine of universal structure is provided, and it can make workpiece can carry out continuously multiaspect processing through clamped one time.
The present invention realizes like this, bridge type numerical control gantry grinding machine of universal structure is provided, comprise: base, crossbeam, saddle, ram and bistrique, base has a workbench, and crossbeam is arranged on the base and can slides along the horizontal X direction, and saddle is arranged on the crossbeam and can slides along horizontal Y-direction, ram is arranged on the saddle and can slides along the vertical Z direction, be installed with vertical dividing disc in the ram lower end, bistrique is fixed on the vertical dividing disc, and can rotate simultaneously along with vertical dividing disc.
Further, bistrique is to be fixedly mounted on the vertical dividing disc by connecting plate, and bistrique is fixedly mounted on the connecting plate.
Further, bistrique is direct-coupled electrical machinery formula grinding dynamic and static pressure grinding wheel head.
Further, direct-coupled electrical machinery formula grinding dynamic and static pressure grinding wheel head comprises grinding head motor, grinding spindle and abrasive grinding wheel, and grinding spindle one end directly connects with grinding head motor, other end serial connection abrasive grinding wheel; Grinding head motor and grinding spindle are combined into one the formula structure, and grinding head motor directly drives the abrasive grinding wheel rotation by grinding spindle and carries out grinding.
Further, vertical dividing disc is the tooth-like dividing disc of vertical oil pressure.
Further, the tooth-like dividing disc of vertical oil pressure is provided with scratch diskette, and connecting plate is fixed on the scratch diskette, and scratch diskette can come back rotation on the plane perpendicular to workbench.
Further, scratch diskette can be on perpendicular to the plane of workbench back and forth counterclockwise and clockwise each 90 ° of rotation, and can be respectively at 0 °, counterclockwise 45 ° and 90 ° ,-45 ° and location ,-90 ° of five positions stop clockwise.
Further, when the scratch diskette location stopped at 0 ° of position, the axis of bistrique was consistent with the glide direction of ram, and abrasive grinding wheel is near operating position.
Further, the both sides of workbench are fixed with respectively left side beam and right side beam, all parallel the first guide rail and the first screw pair of being installed with on left side beam and right side beam, and crossbeam is slidably mounted on the first guide rail of left and right curb girder; Crossbeam is provided with the second guide rail and the second screw pair, and saddle is slidably mounted on the second guide rail of crossbeam; Saddle is provided with the 3rd guide rail and the 3rd screw pair, and ram is slidably mounted on the 3rd guide rail of saddle.
Further, the first screw pair, the second screw pair and the 3rd screw pair all are directly to connect with the output shaft of corresponding servomotor by the gapless shaft coupling.
Compared with prior art, in the grinding machine of universal structure of bridge type numerical control of the present invention gantry, vertical dividing disc is fixedly mounted on the lower end of ram, bistrique is fixed on the vertical dividing disc, and along with vertical dividing disc rotates, can make workpiece can carry out continuously the processing on multiaspect even inclined-plane through clamped one time, make easy, the working stability of its processing, and improve machining accuracy and operating efficiency, be very suitable for practicality.In addition, the present invention adopts bridge-type movable beam type structure, and workbench is mobile, makes the weight of workpiece need not be restricted, process easy, stable work in work, raising machining accuracy and process velocity.
Description of drawings
Fig. 1 is the schematic diagram of bridge type numerical control gantry grinding machine of universal structure of preferred embodiment of the present invention;
Fig. 2 is the schematic diagram of the bistrique installation site among Fig. 1;
Fig. 3 is the structural representation of the bistrique among Fig. 2;
Fig. 4 A to Fig. 4 E is the schematic diagram of each location stop position of the bistrique among Fig. 2.
The specific embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
See also shown in Figure 1ly, be bridge type numerical control gantry grinding machine of universal structure of preferred embodiment of the present invention, it mainly comprises: base 100, crossbeam 200, saddle 300, ram 400, vertical dividing disc 500, connecting plate 600 and bistrique 700.
Wherein, the fixing workbench 101 that is provided with on the base 100 is fixed thereon for the workpiece of processing to be ground, and the present embodiment adopts bridge-type movable beam type structure, because workbench 101 is mobile, makes the weight of processing work to be ground need not be restricted.Be respectively arranged with contour left side beam 102 and right side beam 103 in the both sides of workbench 101, left side beam 102 is fixedly connected with one with right side beam 103 with base 100.All parallel two the first guide rails 104 and one first screw pair 105 of being installed with in the upper end of left side beam 102 and right side beam 103.Every the first guide rail 104 is provided with two the first slide block (not shown)s, four the first slide block tops at left side beam 102 are installed with slide plate 106, four the first slide block tops at right side beam 103 are installed with slide plate 106, the bottom, two ends of crossbeam 200 is fixedly mounted on respectively on the slide plate 106, thereby by slide plate 106 and the first slide block, be slidably mounted on the first guide rail 104, crossbeam 200 can slide along the horizontal X direction.The two ends of the first screw pair 105 are fixed on left side beam 102 and the right side beam 103 by bearing block respectively, and the feed screw nut of the first screw pair 105 is separately fixed on the slide plate 106, realize the synchronous two feed motions of driving of grinding machine.
In the present embodiment, the first guide rail 104 is roller line slideway, and it adopts the high-precision heavy-load roller line slideway to substitute conventional Grinder bench V-level gauge, its advantage: frictional force is little, precision is high, and precision more easily guarantees, carry high, speed is fast, the life-span is high.The first screw pair 105 is roller screw pair, adopts high accuracy double nut pretension ball screw to substitute conventional grinding machine push cylinder, and its advantage: rapid traverse speed is high and stable, and stressed effect is good; Can regulate rapid traverse speed by servomotor, bistrique be processed slow down behind the workpiece to stop.Therefore without impulsive force, inertia is low, can carry out gapless driving, has improved the stability of process equipment, improves machining accuracy and operating efficiency.
In addition, crossbeam 200 is provided with three the second guide rails 201 (being roller line slideway in the present embodiment) and one second screw pair 202 (being roller screw pair in the present embodiment) that is parallel to each other along Y-direction.Wherein two the second guide rails 201 are fixedly mounted on respectively on the different horizontal stand terrace of two height, another root second guide rail 201 is fixedly mounted on one first vertical side of crossbeam 200, every the second guide rail 201 is provided with two the second slide block (not shown)s, saddle 300 is fixed on the second slide block of three the second guide rails 201, from and by the second slide block, be slidably mounted on the crossbeam 200, saddle 300 can slide along horizontal Y-direction.The two ends of the second screw pair 202 are fixed on the second side of crossbeam 200 by bearing block respectively, and the feed screw nut of the second screw pair 202 is fixed on the saddle 300, realize vertically moving fast of grinding machine.
Particularly, installed surface opposite face at saddle 300 and crossbeam 200 is concaved with fluting 301, two medial surfaces at fluting 301 are respectively equipped with the 3rd guide rail (not shown), and ram 400 is slidably mounted on the 3rd guide rail of saddle 300, can slide along the vertical Z direction.In the present embodiment, the 3rd guide rail is the slip plastic-sticking guiding rail, is provided with quenching grinding slideway 401 at 400 liang of relative lateral surfaces of ram, and slip plastic-sticking guiding rail and quenching grinding slideway 401 complement each other to form and be slidingly connected, and can slide along the vertical Z direction.On saddle 300, also be provided with one the 3rd screw pair (not shown), the two ends of the 3rd screw pair (being roller screw pair in the present embodiment) are fixed on the saddle 300 by bearing block respectively, the feed screw nut of the 3rd screw pair is fixed on the ram 400, realizes the fast lifting motion of grinding machine.
In the present embodiment, ram 400 adopts the ram structure of planer-type milling machine, adequate rigidity, stable work in work.
And the first screw pair 105, the second screw pair 202 and the 3rd screw pair all are directly to connect with the output shaft of corresponding servomotor by the gapless shaft coupling, without backlass, have guaranteed high transmission accuracy.
On the other hand, another key structure of the present invention is: vertical dividing disc 500 and bistrique 700, and in the present embodiment, vertical dividing disc 500 is the tooth-like dividing disc of vertical oil pressure, bistrique 700 is direct-coupled electrical machinery formula grinding dynamic and static pressure grinding wheel head.Vertical dividing disc 500 is fixedly mounted on ram 400 lower ends, and bistrique 700 is fixedly mounted on the vertical dividing disc 500 by connecting plate 600, and bistrique 700 is fixedly mounted on the connecting plate 600.Connecting plate 500 is along with vertical dividing disc 500 rotates, and band rotary bistrique 700 is rotated jointly.Reasonably install vertical dividing disc 500 and bistrique 700 additional on ram 400, make the topology layout of bistrique more reasonable, rigidity is better, and grinding accuracy is higher, operates, processes safer.
Please together referring to shown in Figure 2, vertical dividing disc 500 is fixedly mounted on the lower end of ram 400 by screw, vertical dividing disc 500 is provided with the scratch diskette (not shown), connecting plate 600 is fixed on the scratch diskette by screw and T-shaped, scratch diskette can be on perpendicular to the plane of workbench 101 back and forth counterclockwise and clockwise rotate.Bistrique 700 is fixed on the connecting plate 500, when scratch diskette rotates, jointly rotates by connecting plate 500 band rotary bistriques 700.
Please more together referring to shown in Figure 3, bistrique 700 comprises grinding head motor 701, grinding spindle 702, rotatable wheel guard 703 and abrasive grinding wheel 704.Grinding spindle 702 1 ends directly connect with grinding head motor 701, other end serial connection abrasive grinding wheel 704.Grinding spindle 702 is provided with housing 705, is provided with the yielding coupling and the abrasive grinding wheel axle that are coupled to each other in housing 705, and abrasive grinding wheel axle one end extends to outside the housing 705.Grinding head motor 701 is combined into one the formula structure with grinding spindle 702, grinding head motor 701 directly drives the rotation of abrasive grinding wheel axle by yielding coupling, the abrasive grinding wheel axle drives abrasive grinding wheel 704 rotations and carries out grinding, this construction weight is lighter, the position adjustment is easy, transmission is accurate, and is easy to maintenance.Rotatable wheel guard 703 is installed on the housing 705, can make at any time corresponding rotation adjustment according to the grinding position of abrasive grinding wheel 704.
Please referring to shown in Fig. 4 A to Fig. 4 E, the work card of vertical dividing disc 500 can be carried out in 360 ° of directions the location of 8 positions, the present embodiment is only selected wherein location, five positions according to the structure needs, and the rotating manner of restraint of labour dish, no longer carry out 360 ° of direction rotations, but on perpendicular to the plane of workbench 101 back and forth counterclockwise and clockwise each 90 ° of rotation, and can be respectively at 0 °, counterclockwise 45 ° and 90 ° ,-45 ° and location ,-90 ° of five positions stop clockwise.When the scratch diskette location stops at 0 ° of position, shown in Fig. 4 C, the axis of bistrique 700 is consistent with the glide direction of ram 400, and abrasive grinding wheel 704 is near workbench 101 positions, at this moment, abrasive grinding wheel 704 can carry out grinding to each vertical side of processing work respectively.When scratch diskette location stops at counterclockwise 45 ° or clockwise during-45 ° of positions, shown in Fig. 4 D or Fig. 4 B, the glide direction of the axis of bistrique 700 and ram 400 is counterclockwise 45 ° or clockwise-45 ° of angles, and abrasive grinding wheel 704 is in heeling condition and close workbench 101, at this moment, abrasive grinding wheel 704 can carry out grinding to 45 ° of inclined-planes of processing work.When scratch diskette location stops at counterclockwise 90 ° or clockwise during-90 ° of positions, shown in Fig. 4 E or Fig. 4 A, the glide direction of the axis of bistrique 700 and ram 400 is counterclockwise 90 ° or clockwise-90 ° of angles, the axis of direct-coupled electrical machinery formula grinding dynamic and static pressure grinding wheel head 700 is in level, at this moment, grinding machine has horizontal plain grinding function, and abrasive grinding wheel 704 can carry out grinding to the upper plane of processing work.
The present embodiment is when processing work, can make processing work only pass through clamped one time, grind, reach the grinding of ± 45 ° of a plurality of positions such as inclined-plane with regard to realizing horizontal plain grinding, vertical side, positioning accuracy is high, not only can improve machining accuracy, the resetting error of avoiding multiple clamping to bring more can be saved process time, has improved greatly working (machining) efficiency.
As mentioned above, in the course of work of the present embodiment, the movement of described crossbeam 200, saddle 300, ram 400 is transmission of power to be finished to the screw mandrel of screw pair by shaft coupling by drive motors; During work, screw mandrel rotation and nut does not rotate, nut drives respectively crossbeam 200, saddle 300, ram 400 and moves along guide rail and screw mandrel simultaneously, and rotatablely moving of so just will driving is converted to rectilinear motion; Described drive motors is controlled by digital controlled driver, and working stability can reach translational speed 24-30m/min.
In sum, bridge type numerical control of the present invention gantry grinding machine of universal structure has following advantages and beneficial effect at least:
1. use the tooth-like dividing disc of vertical oil pressure, can clamped one time, realize horizontal plain grinding, vertical side mill, and the grinding of ± 45 ° of a plurality of positions such as inclined-plane, positioning accuracy is high, not only can improve machining accuracy, the resetting error of avoiding multiple clamping to bring more can be saved process time, has improved greatly working (machining) efficiency;
2. direct-coupled electrical machinery formula grinding dynamic and static pressure grinding wheel head is designed to the integrative-structure that is comprised of grinding head motor, yielding coupling, grinding spindle and grinding spindle housing, has alleviated weight, and the position adjustment is easy, and transmission is accurate, and is easy to maintenance;
3. X-axis uses the high-precision heavy-load roller line slideway to substitute conventional Grinder bench V-level gauge, and its advantage: frictional force is little, and precision is high, and precision more easily guarantees, carry high, speed is fast, the life-span is high;
4. X-axis uses high accuracy double nut pretension screw mandrel to substitute conventional grinding machine push cylinder, and its advantage: rapid traverse speed is high and stable, and stressed effect is good; Can regulate rapid traverse speed by servomotor, bistrique be processed slow down behind the workpiece to stop.Therefore without impulsive force, inertia is low, can carry out gapless driving, has improved the stability of process equipment, improves machining accuracy and operating efficiency;
5. ram adopts the ram structure of planer-type milling machine, adequate rigidity; Reasonably install the tooth-like dividing disc of vertical oil pressure, direct-coupled electrical machinery formula grinding dynamic and static pressure grinding wheel head additional on ram, make the topology layout of bistrique more reasonable, rigidity is better, and grinding accuracy is higher, operates, processes safer.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. bridge type numerical control gantry grinding machine of universal structure, comprise: base, crossbeam, saddle, ram and bistrique, described base has a workbench, described crossbeam is arranged on the described base and can slides along the horizontal X direction, described saddle is arranged on the described crossbeam and can slides along horizontal Y-direction, described ram is arranged on the described saddle and can slides along the vertical Z direction, it is characterized in that, be installed with vertical dividing disc in described ram lower end, described bistrique is fixed on the described vertical dividing disc, and can rotate simultaneously along with described vertical dividing disc.
2. bridge type numerical control gantry grinding machine of universal structure as claimed in claim 1 is characterized in that, described bistrique is to be fixedly mounted on the described vertical dividing disc by connecting plate, and described bistrique is fixedly mounted on the described connecting plate.
3. bridge type numerical control gantry grinding machine of universal structure as claimed in claim 1 is characterized in that, described bistrique is direct-coupled electrical machinery formula grinding dynamic and static pressure grinding wheel head.
4. bridge type numerical control gantry grinding machine of universal structure as claimed in claim 3, it is characterized in that, described direct-coupled electrical machinery formula grinding dynamic and static pressure grinding wheel head comprises grinding head motor, grinding spindle and abrasive grinding wheel, and described grinding spindle one end directly connects with described grinding head motor, and the other end is connected in series described abrasive grinding wheel; Described grinding head motor and described grinding spindle are combined into one the formula structure, and described grinding head motor directly drives described abrasive grinding wheel rotation by described grinding spindle and carries out grinding.
5. bridge type numerical control gantry grinding machine of universal structure as claimed in claim 1 is characterized in that, described vertical dividing disc is the tooth-like dividing disc of vertical oil pressure.
6. bridge type numerical control gantry grinding machine of universal structure as claimed in claim 5, it is characterized in that, the tooth-like dividing disc of described vertical oil pressure is provided with scratch diskette, and described connecting plate is fixed on the described scratch diskette, and described scratch diskette can come back rotation on the plane perpendicular to described workbench.
7. bridge type numerical control gantry grinding machine of universal structure as claimed in claim 6, it is characterized in that, described scratch diskette can be on perpendicular to the plane of described workbench back and forth counterclockwise and clockwise each 90 ° of rotation, and can be respectively at 0 °, counterclockwise 45 ° and 90 ° ,-45 ° and location ,-90 ° of five positions stop clockwise.
8. bridge type numerical control gantry grinding machine of universal structure as claimed in claim 7 is characterized in that, when described scratch diskette location stopped at 0 ° of position, the axis of described bistrique was consistent with the glide direction of described ram, and abrasive grinding wheel is in close described operating position.
9. bridge type numerical control gantry grinding machine of universal structure as claimed in claim 1, it is characterized in that, the both sides of described workbench are fixed with respectively left side beam and right side beam, all parallel the first guide rail and the first screw pair of being installed with on described left side beam and right side beam, described crossbeam is slidably mounted on the first guide rail of described left and right curb girder; Described crossbeam is provided with the second guide rail and the second screw pair, and described saddle is slidably mounted on the second guide rail of described crossbeam; Described saddle is provided with the 3rd guide rail and the 3rd screw pair, and described ram is slidably mounted on the 3rd guide rail of described saddle.
10. bridge type numerical control gantry grinding machine of universal structure as claimed in claim 9 is characterized in that, described the first screw pair, the second screw pair and the 3rd screw pair all are directly to connect with the output shaft of corresponding servomotor by the gapless shaft coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220153758 CN202640099U (en) | 2012-04-06 | 2012-04-06 | Bridge type numerical-control planar universal grinder structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220153758 CN202640099U (en) | 2012-04-06 | 2012-04-06 | Bridge type numerical-control planar universal grinder structure |
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| CN202640099U true CN202640099U (en) | 2013-01-02 |
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| CN 201220153758 Expired - Fee Related CN202640099U (en) | 2012-04-06 | 2012-04-06 | Bridge type numerical-control planar universal grinder structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642160A (en) * | 2012-04-06 | 2012-08-22 | 深圳市盛德丰精密机床有限公司 | Bridge numerical control gantry universal grinder structure |
| CN103753361A (en) * | 2014-01-14 | 2014-04-30 | 宁波鑫其精密磁钢有限公司 | Parallel surface grinding machine |
| CN104339210A (en) * | 2014-10-23 | 2015-02-11 | 太仓威格玛机械设备有限公司 | Horizontal type double-head machining center |
| CN106041700A (en) * | 2016-08-19 | 2016-10-26 | 安徽雷默模具制造有限公司 | Gantry numerical control die grinding machine and utilization method thereof |
| CN110549183A (en) * | 2019-09-27 | 2019-12-10 | 刘岳兴 | High-precision vertical needle gear shell composite grinding machine |
| WO2020200310A1 (en) * | 2019-04-04 | 2020-10-08 | 科德数控股份有限公司 | Swing head mounting structure of numerically-controlled machine tool |
| WO2022021576A1 (en) * | 2020-07-29 | 2022-02-03 | 湖南中大创远数控装备有限公司 | Numerical-control gear grinding machine |
| CN117620845A (en) * | 2024-01-26 | 2024-03-01 | 福建百麒达自动化科技有限公司 | Numerical control four-axis arc plate polishing machine and processing flow |
-
2012
- 2012-04-06 CN CN 201220153758 patent/CN202640099U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642160A (en) * | 2012-04-06 | 2012-08-22 | 深圳市盛德丰精密机床有限公司 | Bridge numerical control gantry universal grinder structure |
| CN103753361A (en) * | 2014-01-14 | 2014-04-30 | 宁波鑫其精密磁钢有限公司 | Parallel surface grinding machine |
| CN103753361B (en) * | 2014-01-14 | 2015-12-02 | 宁波鑫其精密磁钢有限公司 | A kind of double-ended grinding machine |
| CN104339210A (en) * | 2014-10-23 | 2015-02-11 | 太仓威格玛机械设备有限公司 | Horizontal type double-head machining center |
| CN104339210B (en) * | 2014-10-23 | 2017-06-16 | 太仓威格玛机械设备有限公司 | Horizontal double-headed machining center |
| CN106041700A (en) * | 2016-08-19 | 2016-10-26 | 安徽雷默模具制造有限公司 | Gantry numerical control die grinding machine and utilization method thereof |
| WO2020200310A1 (en) * | 2019-04-04 | 2020-10-08 | 科德数控股份有限公司 | Swing head mounting structure of numerically-controlled machine tool |
| CN110549183A (en) * | 2019-09-27 | 2019-12-10 | 刘岳兴 | High-precision vertical needle gear shell composite grinding machine |
| WO2022021576A1 (en) * | 2020-07-29 | 2022-02-03 | 湖南中大创远数控装备有限公司 | Numerical-control gear grinding machine |
| CN117620845A (en) * | 2024-01-26 | 2024-03-01 | 福建百麒达自动化科技有限公司 | Numerical control four-axis arc plate polishing machine and processing flow |
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Granted publication date: 20130102 Termination date: 20180406 |