CN1338354A - Cutting tool storage and exchange unit of special machine tool - Google Patents
Cutting tool storage and exchange unit of special machine tool Download PDFInfo
- Publication number
- CN1338354A CN1338354A CN 00121286 CN00121286A CN1338354A CN 1338354 A CN1338354 A CN 1338354A CN 00121286 CN00121286 CN 00121286 CN 00121286 A CN00121286 A CN 00121286A CN 1338354 A CN1338354 A CN 1338354A
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- cutter
- cam
- chuck
- tool
- driving
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Abstract
A cutting tool storage and exchange unit of special machine-tool is composed of storage sub-unit and exchange sub-unit. Said storage sub-unit consists of cutting tool storage, drive mechanism and cutting tool returning mechanism. Said exchange sub-unit consists of cam drive mechanism, working fixture, and rotational clamping mechanism. Its advantages are high automation level and high productivity.
Description
The cutter that the present invention mainly provides a kind of special machine stores, changing device more, instigates especially that the multiple cutter that is used for the special machine tool stores automatically, changing device more.
The tradition employed brill, mill, ward off special machine tool or compounding machine, because number of cutters is many and complexity does not have the suitable space that stores again, therefore may intersperse among everywhere, often make the user seek all over, if store with box, the other arrangement of case, suitable inconvenience on taking, moreover the cutter of existing machinery needs mostly manually to operate replacing, and this not only loses time and cost of labor, the shortcoming that also often causes manufacturing schedule to fall behind does not meet Industrial economic benefit in fact.
In view of this, the inventor is through well-designed, exploitation for a long time, and does one at shortcoming that above-mentioned existing machining machine and tool produced and thoroughly solve, improve, and had the cutter of special machine of the present invention to store, the more generation of changing device.
Purpose of the present invention is that the cutter that a kind of special machine is provided stores, changing device more, takes inconvenience to overcome the cutter that prior art exists, shortcomings such as the low and cost height of production efficiency.
The object of the present invention is achieved like this:
A kind of cutter of special machine stores, changing device more, stores part and cutter changing part institute is formed by cutter, it is characterized in that:
1) cutter stores and partly comprises tool magazine, driving mechanism and the cutter mechanism that falls, wherein:
Tool magazine 1 is connected with sleeve 11 in centre, at sleeve 11 peripheries and be provided with bent mobile cutter head sleeve 12, cutter head sleeve 12 is provided with a pulling shaft 121 in the rear end, and sleeve 11 is provided with the flanged bearing 13 of relative cutter head sleeve 12 numbers in inner face, is formed with short slot 14 in addition in the bottom of tool magazine 1;
Fall cutter mechanism 3, be to be provided with a pneumatic cylinder 31 in tool magazine 1 avris, and the dorsal part of tool magazine 1 is provided with support 32 in addition, cylinder arm 311 front ends at pneumatic cylinder 31 are connected with bell crank 33, bell crank 33 is located on the support 32 with the axis of centres, end then connects a pull bar 34 in addition, and pull bar 34 is provided with the piece of falling the cutter 35 in the bottom, and the piece of falling the cutter 35 then places cutter head sleeve 12 rears of tool magazine 1 bottom with the groove of falling the cutter 351;
2) cutter changing partly comprises cam drive mechanism, work chuck mechanism and rotation clamping device, wherein:
Cam drive mechanism 4, be to have a cylindricality multiple-grooved cam 41 in the upper end, cylindricality multiple-grooved cam 41 is established the guide groove 40 of the default axis in some roads at the shaft periphery ring, and the lower shaft of cam 41 is connected to driving roller bearing 42, be combined with Geneva wheel 43 driving roller bearing 42 1 sides, and take turns 43 lower ends in Geneva one gear 44 is set;
In addition, drive roller bearing 42 and convex with ring wall 421 at end abdomen place, be extended with roller 422 in periphery one side in addition, and Geneva wheel 43 is provided with a gear 44 in the bottom, the periphery equidistant position that is positioned at Geneva wheel 43 is formed with concave arc 431, and establish open driving croze 432 toward periphery at per two concave arcs 431 intervals of wheel face, drive the driving rotation of roller bearing 42 by power source, and the concave arc 431 of the ring wall 421 of driving roller bearing 42 and roller 422 cooperation Geneva wheels 43 and driving croze 432 work engagement action at intermittence, the unidirectional continuous 360 intermittent transmission of power of spending are provided with this.
Advantage of the present invention is: owing to adopt cutter of the present invention to store, change structure process tool commonly used is had outside the function of storing, utilize simultaneously fall automatically cutter, change function fast, the time of changing cutter is significantly shortened, and need manually not come implementation and operation, cost of labor and time can effectively be reduced, and then increase output, to meet Industrial economic benefit.
Below in conjunction with Figure of description and embodiment, structure of the present invention is further described.
Description of drawings:
Fig. 1 is a stereoscopic schematic diagram of the present invention;
Fig. 2 is the schematic perspective view that cutter of the present invention stores part;
Fig. 3 is the front schematic view that cutter of the present invention stores part;
Fig. 4 is the side-looking generalized section that cutter of the present invention stores part;
Fig. 5 is the schematic rear view that cutter of the present invention stores part;
Fig. 6 is the schematic top plan view of cutter changing part of the present invention;
Fig. 7 is the left side schematic diagram of cutter changing part of the present invention;
Fig. 8 is the right side schematic diagram of cutter changing part of the present invention;
Fig. 9 is that Geneva of the present invention wheel drive is implemented the action schematic diagram.
Shown in Fig. 1,2,8, the present invention is provided with in a board body to comprise that a cutter stores part and the cutter changing part constitutes.Wherein, this cutter stores partly and includes: tool magazine 1, driving mechanism 2 and the cutter mechanism 3 that falls combine (extremely shown in Figure 5 as Fig. 2); And tool magazine 1 is in the be coupling sleeve 11 of tool spinning movement of centre, at sleeve 11 peripheries and be provided with a plurality of bent mobile cutter head sleeves 12, cutter head sleeve 12 is provided with a pulling shaft 121 (as shown in Figure 4) in the rear end, and sleeve 11 is provided with the flanged bearing 13 of relative cutter head sleeve 12 numbers in the inner face appropriate location, is formed with short slot 14 in the bottom that stores tool magazine 1 in addition.
Shown in Fig. 3,4, driving mechanism 2 is located at sleeve 11 the place aheads of tool magazine 1, it has a CD-ROM drive motor 21, CD-ROM drive motor 21 front end axles are provided with pinion stand 22, be positioned at pinion stand 22 1 sides and be engaged with driven wheel 23, and driven thereupon cylindrical groove cam 24 being set in driven wheel 23 bottoms, 24 on cylindrical groove cam drives flanged bearing 13 drive sleeves 11 with helicla flute 241 and makes swing offset.
Shown in Fig. 3,4,5, the cutter mechanism 3 that falls is to have a pneumatic cylinder 31 on tool magazine 1 avris, in the dorsal part appropriate location that stores tool magazine 1 support 32 is set in addition, cylinder arm 311 front ends at pneumatic cylinder 31 are connected with both arms crank slot 33, both arms crank slot 33 is located on the support 32 with the axis of centres, end then connects a pull bar 34 in addition, and pull bar 34 is provided with the piece of falling the cutter 35 in the bottom, and the piece of falling the cutter 35 then places cutter head sleeve 12 rears of tool magazine 1 bottom with the groove of falling the cutter 351.
Extremely shown in Figure 5 as Fig. 2, by above-mentioned combination, cutter of the present invention stores part and implements cutter and when storing cutter, mainly be to utilize CD-ROM drive motor 21 transferring power sources, even this power source rotates via the transmission cylindrical groove cam 24 of pinion stand 22 and driven wheel 23 thereupon, and impelling flanged bearing 13 to be subjected to drive 11 displacements of drive sleeve rotates, after treating that required cutter head sleeve 12 is moved to tool magazine 1 bottom short slot 14,121 of the pulling shafts of this cutter head sleeve 12 are in the groove of falling the cutter 351 of the piece of falling the cutter 35, when in the pneumatic cylinder 31 of cutter mechanism 3 is instructed, contracting, 33 of bell cranks are that fulcrum is to top offset with central authorities, and drive pull bar 34 simultaneously and make the piece of falling the cutter 35 be 90 degree and fall downwards cutter drawing on the cutter head sleeve 12, wait for that with this cutter changing partly implements the displacement of cutter; Otherwise, when if desire is implemented storing of cutter, then protruded out by instruction with pneumatic cylinder 31, and to drive bell crank 33 simultaneously be that fulcrum is to bottom offset with central authorities, and pull bar 34 make downwards thereupon the piece of falling the cutter 35 with cutter head sleeve 12 press down be 90 the degree upwards reply to original position, finish the replacing operation that stores or carry out another cutter of cutter with this.
Shown in Fig. 6,7,8, a tool removable parts of the present invention are to include: cam drive mechanism 4, work chuck mechanism 5 and rotation clamping device 6 combine; Wherein, cam drive mechanism 4 is to have a cylindricality multiple-grooved cam 41 in the upper end, cam 41 is established the guide groove 40 of the default axis in some roads at the shaft periphery ring, and the lower shaft of cam 41 is connected to driving roller bearing 42, be combined with Geneva wheel 43 driving roller bearing 42 1 sides, and take turns 43 lower ends in Geneva one gear 44 is set.Moreover as shown in Figure 9, drive roller bearing 42 and convex with ring wall 421 at end abdomen place, be extended with roller 422 in periphery one side in addition, and Geneva wheel 43 is provided with a gear 44 in the bottom, the periphery equidistant position that is positioned at Geneva wheel 43 is formed with concave arc 431, and establishes open driving croze 432 at per two concave arcs 431 intervals of wheel face toward periphery.The present invention utilizes driving roller bearing 42 rotated by the driving of power source, and ring wall 421 and the concave arc 431 of roller 422 cooperation Geneva wheels 43 and the engagement action at intermittence of driving croze 432 to drive roller bearing 42, the intermittent transmission of power with unidirectional continuous 360 degree are provided with this.
Shown in Fig. 6,7, work chuck mechanism 5 of the present invention, it mainly is the chuck 52 that is provided with tool clamping ability in the bottom of main shaft 51, main shaft 51 is rotated by drive power source in the upper end, be provided with switch Rocker arm 53 and be positioned at main shaft 51 tops, switch Rocker arm 53 is configured to a fulcrum in the axis of centres, the other end then is embedded in the central guide groove 40 of cam 41 with protruding axle 531 appearances, and the driving rotation that is subjected to power source by cam 41 to be making the protruding axle 531 axis sequential along with cam 41 guide grooves 40, and implements the clamping or the breakdown action of chuck 52.
In addition, as Fig. 6, shown in 8, rotation clamping device 6 of the present invention is the tool changing chucks 62 that are provided with tool clamping ability in the bottom of main shaft 61, tool changing chuck 62 is suitably highly established a driven gear 63 in main shaft 61, and with gear 44 engagement, be connected to chuck switch rocking arm 64 at main shaft 61 upper shafts in addition; rocking arm 64 is set as a fulcrum in the axis of centres; the other end then is embedded in the guide groove 40 of cam 41 tops with cam 641 appearances; and rotate by the driving of cam 41; to make the default axis sequential of cam 641, to implement the clamping or the breakdown action of tool changing chuck 62 along with cam 41 guide grooves 40.
Moreover, rotation clamping device 6 is bars 611 in main shaft 61 inside have been installed with, the bottom of interior bar 611 is provided with the tool changing chuck 62 of tool clamping ability, and main shaft 61 is connected to chuck lifting rocking arm 65 in suitable altitude axis, and rocking arm 65 is embedded in the cam 41 lower end guide grooves 40 with protruding axle 651 appearances in central authorities, and the other end then axle is made as fulcrum, and rotates by the driving of cam 41, make protruding axle 651 guide groove 40 axis sequential, tool changing chuck 62 is done the action that descends or rise with bar 611 in making along with cam 41.
Setting by said structure, when the replacing of the invention process cutter, mainly be earlier any cutter head sleeve 12 in the tool magazine 1 is driven to be the state of falling the cutter to fall cutter mechanism 3, accept 41 rotations of instruction driven cylinder multiple-grooved cam with cam drive mechanism 4 again, the driving roller bearing 42 of cam 41 lower ends then is the not idling conditions of engagement with ring wall 421 in concave arc 431 places of Geneva wheel 43, be the clamping shape earlier in these 5 protruding axle 531 axis sequential of chuck mechanism of working simultaneously along with cam 41 guide grooves 40 with switch Rocker arm 53, the cutter on the jaw 621 difference clamping cutter head sleeves 12 of chuck 62 both sides and the cutter of work chuck 52 lower ends, and cylindricality multiple-grooved cam 41 continues rotation, and the switch Rocker arm 53 that makes work chuck mechanism 5 is with the axis sequential unlatching chuck 52 of cam 531 along with guide groove 40, thereafter rotate protruding axle 651 the axis sequential drive actions of clamping device 6 along with lower end guide groove 40 with lifting rocking arm 65, tool changing chuck 62 is fallen, the driving roller bearing 42 of top cam drive mechanism 4 is then implemented rotation with the driving croze 432 of roller 422 engagement Geneva wheels 43 at the same time, this rotary power is then via the transmission of gear 44 with driven gear 63, promptly make 62 rotations about 180 of tool changing chuck spend, afterwards, rotation clamping device 6 again with the protruding axle 651 of lifting rocking arm 65 along with guide groove 40 axis drives to rising, drive tool changing chuck 62 simultaneously makes progress thereupon, and cutter is held respectively be embedded on the cutter head sleeve 12 of work chuck 52 and tool magazine 1, and work chuck 52 utilizes switch Rocker arm 53 to be driven again and is clamp position, 62 actions with switch rocking arm 64 of tool changing chuck make it to be opening, finish the replacing operation of cutter with this, and wait for that the carrying out of next cutter replacement procedure, opposite side change the cutter that unloads and then store part by cutter and implement to store operation.
Claims (3)
1, a kind of cutter of special machine store, changing device more, store part and cutter changing part institute is formed by cutter, it is characterized in that:
1) cutter stores and partly comprises tool magazine, driving mechanism and the cutter mechanism that falls, wherein:
Tool magazine (1) is connected with sleeve (11) in centre, at sleeve (11) periphery and be provided with bent mobile cutter head sleeve (12), cutter head sleeve (12) is provided with a pulling shaft (121) in the rear end, and sleeve (11) is provided with the flanged bearing (13) of relative cutter head sleeve (12) number in inner face, is formed with short slot (14) in addition in the bottom of tool magazine (1);
Driving mechanism (2), it is sleeve (11) the place ahead of being located at tool magazine (1), it has a CD-ROM drive motor (21), CD-ROM drive motor (21) front end axle is provided with pinion stand (22), be positioned at pinion stand (22) one sides and be engaged with driven wheel (23), and driven thereupon cylindrical groove cam (24) being set in driven wheel (23) bottom, cylindrical groove cam (24) then drives flanged bearing (13) drive sleeve (11) with helicla flute (241) and makes swing offset;
Fall cutter mechanism (3), be to be provided with a pneumatic cylinder (31) in tool magazine (1) avris, and the dorsal part of tool magazine (1) is provided with support (32) in addition, cylinder arm (311) front end at pneumatic cylinder (31) is connected with bell crank (33), bell crank (33) is located on the support (32) with the axis of centres, end then connects a pull bar (34) in addition, and pull bar (34) is provided with the piece of falling the cutter (35) in the bottom, and the piece of falling the cutter (35) then places cutter head sleeve (12) rear of tool magazine (1) bottom with the groove of falling the cutter (351);
2) cutter changing partly comprises cam drive mechanism, work chuck mechanism and rotation clamping device, wherein:
Cam drive mechanism (4), be to have a cylindricality multiple-grooved cam (41) in the upper end, cylindricality multiple-grooved cam (41) is established the guide groove (40) of the default axis in some roads at the shaft periphery ring, and the lower shaft of cam (41) is connected to driving roller bearing (42), be combined with Geneva wheel (43) in driving roller bearing (42) one sides, and one gear (44) be set in wheel (43) lower end, Geneva;
Work chuck machinery (5), it is the chuck (52) that is provided with the ability of tool clamping in the bottom of main shaft (51), main shaft (51) is rotated by drive power source in the upper end, and be provided with a switch rocking arm (53) above being positioned at main shaft (51); rocking arm (53) is configured to a fulcrum in the axis of centres; the other end then is embedded in the central guide groove (40) of cam (41) with protruding axle (531) appearance; cam (41) is by the driving rotation of power source; protruding axle (531) makes chuck (52) make clamping or breakdown action along with the axis sequential of cam (41) guide groove (40);
Rotation clamping device (6), it is the tool changing chuck (62) that is provided with tool clamping ability in the bottom of main shaft (61), tool changing chuck (62) is suitably highly established a driven gear (63) and is meshed with gear (44) in main shaft (61), be connected to chuck switch rocking arm (64) at main shaft (61) upper shaft in addition; rocking arm (64) is set as a fulcrum in the axis of centres; the other end then holds in the guide groove (40) that is embedded in cam (41) top with protruding axle (641); and by cam (41) driving rotation; protruding axle (641) makes tool changing chuck (62) make clamping or breakdown action along with the default axis sequential of cam (41) guide groove (40).
2, the cutter of special machine structure as claimed in claim 1 stores, changing device more, it is characterized in that: drive roller bearing (42) and convex with ring wall (421) at end abdomen place, be extended with roller (422) in periphery one side in addition, and Geneva wheel (43) is provided with a gear (44) in the bottom, the periphery equidistant position that is positioned at Geneva wheel (43) is formed with concave arc (431), and establish open driving croze (432) toward periphery at per two concave arcs (431) interval of wheel face, drive the driving rotation of roller bearing (42) by power source, and the concave arc (431) of the ring wall (421) of driving roller bearing (42) and roller (422) cooperation Geneva wheel (43) and driving croze (432) work engagement action at intermittence, the unidirectional continuous 360 intermittent transmission of power of spending are provided with this.
3, special machine system cutter as claimed in claim 1 stores more changing device, it is characterized in that: rotation clamping device (6) is to be installed with interior bar (611) in main shaft (61) inside, the bottom of interior bar (611) is provided with the tool changing chuck (62) of tool clamping ability, and main shaft (61) is connected to chuck lifting rocking arm (65) in suitable altitude axis, and rocking arm (65) is embedded in cam (41) the lower end guide groove (40) with protruding axle (651) appearance in central authorities, the other end then axle is made as fulcrum, and by cam (41) driving rotation, protruding axle (651) makes interior bar (611) tool changing chuck (62) be done the action that descends or rise with guide groove (40) the axis sequential of cam (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00121286 CN1111113C (en) | 2000-08-11 | 2000-08-11 | Cutting tool storage and exchange unit of special machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00121286 CN1111113C (en) | 2000-08-11 | 2000-08-11 | Cutting tool storage and exchange unit of special machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1338354A true CN1338354A (en) | 2002-03-06 |
| CN1111113C CN1111113C (en) | 2003-06-11 |
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ID=4588701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00121286 Expired - Fee Related CN1111113C (en) | 2000-08-11 | 2000-08-11 | Cutting tool storage and exchange unit of special machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1111113C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039536A (en) * | 2010-12-14 | 2011-05-04 | 成都普瑞斯数控机床有限公司 | Traversing device used for bamboo hat type tool magazine |
| CN102123822A (en) * | 2008-07-07 | 2011-07-13 | 普夫隆腾德克尔-马豪有限责任公司 | Tool changer for machine tools |
| CN102658494A (en) * | 2012-05-15 | 2012-09-12 | 常州市德速机械有限公司 | Tool magazine of main spindle box |
| CN101758411B (en) * | 2008-11-27 | 2014-04-16 | 德克尔-马霍泽巴赫有限责任公司 | Tool change for machine tools |
| CN103764341A (en) * | 2011-09-02 | 2014-04-30 | 德克尔马霍普夫龙滕有限公司 | System for changing tools and inserting or presenting tools on a machine tool, tool magazine and machine tool having tool changing system or tool magazine |
| CN104999411A (en) * | 2015-07-15 | 2015-10-28 | 苏州金牛精密机械有限公司 | Screw storage device |
| CN106584179A (en) * | 2016-11-24 | 2017-04-26 | 宁波海天精工股份有限公司 | Chain-type tool magazine capable of reversing tool for 90 degrees laterally |
| CN107253206A (en) * | 2017-08-03 | 2017-10-17 | 长春理工大学 | The pliers spot welding head electrode cap milling of industrial robot fixed resistance is with changing system |
| CN107571095A (en) * | 2017-10-20 | 2018-01-12 | 卢易达 | A kind of storage device of lathe cutter head |
| CN108972098A (en) * | 2018-08-30 | 2018-12-11 | 江西衡源智能装备有限公司 | Tool magazine component and machining center with it |
| CN110000590A (en) * | 2019-04-28 | 2019-07-12 | 深圳市台控自动化有限公司 | A kind of miniature knife arm type knife library based on outer torque motor |
| CN114559337A (en) * | 2022-03-02 | 2022-05-31 | 杭州芝元机电有限公司 | Double-shaft continuous dressing type grinding center and control method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100413643C (en) * | 2004-03-25 | 2008-08-27 | 威海华东数控股份有限公司 | Automatic set for changing tools in use for machine |
| CN100439035C (en) * | 2006-04-05 | 2008-12-03 | 威海华东数控股份有限公司 | Automatic tool exchanger of machine tool |
-
2000
- 2000-08-11 CN CN 00121286 patent/CN1111113C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102123822A (en) * | 2008-07-07 | 2011-07-13 | 普夫隆腾德克尔-马豪有限责任公司 | Tool changer for machine tools |
| CN101758411B (en) * | 2008-11-27 | 2014-04-16 | 德克尔-马霍泽巴赫有限责任公司 | Tool change for machine tools |
| CN102039536A (en) * | 2010-12-14 | 2011-05-04 | 成都普瑞斯数控机床有限公司 | Traversing device used for bamboo hat type tool magazine |
| CN102039536B (en) * | 2010-12-14 | 2012-12-19 | 成都普瑞斯数控机床有限公司 | Traversing device used for bamboo hat type tool magazine |
| CN103764341A (en) * | 2011-09-02 | 2014-04-30 | 德克尔马霍普夫龙滕有限公司 | System for changing tools and inserting or presenting tools on a machine tool, tool magazine and machine tool having tool changing system or tool magazine |
| CN102658494A (en) * | 2012-05-15 | 2012-09-12 | 常州市德速机械有限公司 | Tool magazine of main spindle box |
| CN104999411A (en) * | 2015-07-15 | 2015-10-28 | 苏州金牛精密机械有限公司 | Screw storage device |
| CN106584179A (en) * | 2016-11-24 | 2017-04-26 | 宁波海天精工股份有限公司 | Chain-type tool magazine capable of reversing tool for 90 degrees laterally |
| CN106584179B (en) * | 2016-11-24 | 2018-11-09 | 宁波海天精工股份有限公司 | A kind of magazine of 90 ° lateral knives |
| CN107253206A (en) * | 2017-08-03 | 2017-10-17 | 长春理工大学 | The pliers spot welding head electrode cap milling of industrial robot fixed resistance is with changing system |
| CN107571095A (en) * | 2017-10-20 | 2018-01-12 | 卢易达 | A kind of storage device of lathe cutter head |
| CN107571095B (en) * | 2017-10-20 | 2019-05-10 | 赖尚辉 | A kind of storage device of lathe cutter head |
| CN108972098A (en) * | 2018-08-30 | 2018-12-11 | 江西衡源智能装备有限公司 | Tool magazine component and machining center with it |
| CN110000590A (en) * | 2019-04-28 | 2019-07-12 | 深圳市台控自动化有限公司 | A kind of miniature knife arm type knife library based on outer torque motor |
| CN114559337A (en) * | 2022-03-02 | 2022-05-31 | 杭州芝元机电有限公司 | Double-shaft continuous dressing type grinding center and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN1111113C (en) | 2003-06-11 |
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