CN103786075A - Full-automatic numerical control gear grinding machine - Google Patents
Full-automatic numerical control gear grinding machine Download PDFInfo
- Publication number
- CN103786075A CN103786075A CN201410032833.6A CN201410032833A CN103786075A CN 103786075 A CN103786075 A CN 103786075A CN 201410032833 A CN201410032833 A CN 201410032833A CN 103786075 A CN103786075 A CN 103786075A
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- longitudinal
- full
- numerical control
- control gear
- automatic numerical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a full-automatic numerical control gear grinding machine. The full-automatic numerical control gear grinding machine comprises a machine table. A transverse guide rail, a transverse servo motor, a transverse ball screw and a transverse sliding base are arranged on the machine table. The transverse servo motor is in transmission connection with the transverse ball screw. The transverse sliding base is driven by the transverse ball screw to move along the transverse guide rail. A workpiece machining station is arranged on the transverse sliding base. A rotating machine frame which can horizontally rotate and a clamping plate for fixing the rotating machine frame are arranged on the machine table. A longitudinal guide rail, a longitudinal servo motor, a longitudinal ball screw and a longitudinal sliding base are arranged on the rotating machine frame. The longitudinal servo motor is in transmission connection with the longitudinal ball screw. The longitudinal sliding base is driven by the longitudinal ball screw to move along the longitudinal guide rail. The longitudinal sliding base is connected with a connecting arm through a worm and gear mechanism, wherein the connecting arm can be turned up and down. A drive motor and a grinding wheel are arranged on the connecting arm. By means of the full-automatic numerical control gear grinding machine, grinding efficiency and machining accuracy of blades of a branch trimming machine can be greatly improved, and the product quality and yield are improved.
Description
Technical field
The present invention relates to blade roll flute or open cutting edge of a knife or a sword device technique field, especially relate to a kind of cutting blade for horticultural branching machine and open the full-automatic numerical control gear grinding machines of cutting edge of a knife or a sword.
Background technology
The cutting blade of horticultural branching machine as shown in Figures 1 to 4, comprise that being located at some on blade sharps teeth 91 and cognate 92, sharp teeth and 91 need to open cutting edge of a knife or a sword by grinding attachment, conventionally adopt wheel grinding, it sharps teeth and 91 comprises the side land 911 that is positioned at both sides, 912 and be positioned at the top land 913 on top, the side land 911 of both sides, between 912, there is included angle A, the side land 911 of both sides, 912 can be that symmetry can be also asymmetric setting, side land 911, the 912 draft angle B that have, top land 913 has draft angle C, and side land 911, 912 have lead angle R angle with blade transverse axis, the cutting blade of pruner is opened cutting edge of a knife or a sword, and to open cutting edge of a knife or a sword complexity than conventional blade higher, precision is difficult to control, and on blade, need that grinding is multiple sharps teeth 91, wherein any 91 damages that sharp teeth all can cause full wafer blade to be scrapped, therefore the 91 grinding difficulty that sharp teeth of pruner blade are very large, grinding efficiency is also very low, also there is the problem that product yield is not high.
Summary of the invention
The deficiency existing for above-mentioned prior art, the object of this invention is to provide a kind of full-automatic numerical control gear grinding machines, can significantly promote grinding efficiency and the machining accuracy of pruner blade, improves the quality of products and yield.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of full-automatic numerical control gear grinding machines, comprise board, board is provided with cross slide way, laterally servomotor, transverse ball lead screw and horizontal sliding seat, and laterally servomotor is in transmission connection with transverse ball lead screw, horizontal sliding seat under the driving effect of transverse ball lead screw along cross slide way displacement; On described horizontal sliding seat, be provided with workpiece processing stations; Board is provided with the rotary frame that can horizontally rotate and the clamping plate for fixing rotary frame, rotary frame is provided with longitudinal rail, servo longitudinal motor, longitudinal ball screw and longitudinal sliding motion seat, servo longitudinal motor is connected with longitudinal ball leading screw driving, the longitudinally guide rail displacement under the driving effect of longitudinal ball screw of longitudinal sliding motion seat; On described longitudinal sliding motion seat, be connected with the linking arm that can spin upside down by worm-and-wheel gear, linking arm is provided with drive motors and emery wheel, and drive motors and emery wheel are in transmission connection.
Further, described workpiece processing stations is provided with Working piece positioning device, described Working piece positioning device comprises locating platform, one side of locating platform is provided with locating piece, another side of locating platform is provided with thruster cylinder, the front end of locating platform is provided with front push cylinder, and the rear end of locating platform is provided with coarse positioning cylinder and fine positioning cylinder, and the top of locating platform is provided with lift cylinder.On described board, be also provided with the electromagnetic adsorption type manipulator for described Working piece positioning device automatic charging and self-emptying.
As preferably, described board is provided with two symmetrically arranged described rotary frames.
Wherein, described worm-and-wheel gear comprises the worm screw being set up on described longitudinal sliding motion seat and the worm gear being connected with described linking arm, and worm and wheel is in transmission connection, and a side for worm screw is provided with regulating handle.Described rotary frame one end is rotationally connected by bearing pin and board, and the other end is provided with adjusting rod.Described board is provided with the dial that can identify described rotary frame and horizontally rotate angle, and described longitudinal sliding motion seat is provided with the scale plate that can identify described linking arm and spin upside down angle.Described longitudinal slide rail is provided with the travel switch of controlling described longitudinal sliding motion seat shift length, and the installation site of described travel switch on longitudinal slide rail is adjustable.
A workpiece localization method for full-automatic numerical control gear grinding machines, is characterized in that, comprises the steps,
S1: utilize manipulator that workpiece is placed on locating platform;
S2: start front push cylinder and be pushed to fixed position;
S3: start coarse positioning cylinder and be pushed to fixed position, making the gap between workpiece and front push cylinder or coarse positioning cylinder is 1-5mm;
S4: start thruster cylinder and workpiece be pushed to the position closely offseting with locating piece;
S5: start fine positioning cylinder and workpiece be pushed to the position closely offseting with front push cylinder;
S6: start lift cylinder workpiece is securely interposed on locating platform, complete workpiece location.
Adopt after technique scheme, the advantage that compared to the prior art the present invention had is:
Full-automatic numerical control gear grinding machines of the present invention, can significantly promote grinding efficiency and the machining accuracy of pruner blade, improve the quality of products and yield.Workpiece localization method of the present invention can carry out fast and locate accurately pruner blade, further improves grinding efficiency and the machining accuracy of pruner blade.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is the structural representation of pruner blade of the present invention.
Fig. 2 is the local structure for amplifying schematic diagram of H indication in Fig. 1.
Fig. 3 is a-a cross-sectional view in Fig. 2.
Fig. 4 is b-b cross-sectional view in Fig. 2.
Fig. 5 is perspective view of the present invention.
Fig. 6 is the perspective view at another visual angle of the present invention.
Fig. 7 is the structural representation of Working piece positioning device of the present invention.
In figure, 10: board; 21: laterally servomotor; 22: transverse ball lead screw; 23: cross slide way; 24: laterally sliding seat; 25: workpiece processing stations; 30: rotary frame; 31: servo longitudinal motor; 32: longitudinally ball screw; 33: longitudinal rail; 34: travel switch; 35: clamping plate; 40: longitudinal sliding motion seat; 41: linking arm; 42: drive motors; 43: emery wheel; 44: worm gear; 45: worm screw; 51: dial; 52: scale plate; 53: adjusting rod; 54: regulating handle; 61: locating platform; 62: locating piece; 63: front push cylinder; 64: thruster cylinder; 65: coarse positioning cylinder; 66: fine positioning cylinder; 67: lift cylinder; 91: sharp teeth; 92: cognate; 911,912: side land; 913: top land.
The specific embodiment
The following stated is only preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Embodiment, is shown in shown in Fig. 1 to Fig. 7:
A kind of full-automatic numerical control gear grinding machines, comprise digital control system, distributor and board 10, and digital control system and distributor part are the usual common practise in this area, are respectively used to automatic programming control and the power supply of numerical control device, repeat no more here.Board 10 is provided with cross slide way 23, horizontal servomotor 21, transverse ball lead screw 22 and horizontal sliding seat 24, laterally sliding seat 24 is limited in and on cross slide way 23, moves and be connected by ball slider with transverse ball lead screw 22, laterally servomotor 21 is in transmission connection by shaft coupling and planetary gear speed reducing mechanism and transverse ball lead screw 22 successively, laterally sliding seat 24 under the driving effect of transverse ball lead screw 22 along cross slide way 23 displacements, laterally on sliding seat 24, be provided with workpiece processing stations 25, for fixed placement workpiece.Adopt transverse ball lead screw 22 to drive horizontal sliding seat 24 at cross slide way 23 top offsets, under the control of digital control system, laterally sliding seat 24 can be realized accurate displacement, and running status and inactive state all can keep stablizing.
Further, workpiece processing stations 25 is provided with Working piece positioning device, Working piece positioning device comprises locating platform 61, one side of locating platform 61 is provided with locating piece 62, another side of locating platform 61 is provided with thruster cylinder 64, the front end of locating platform 61 is provided with front push cylinder 63, and the rear end of locating platform 61 is provided with coarse positioning cylinder 65 and fine positioning cylinder 66, and the top of locating platform 61 is provided with lift cylinder 67.On board 10, be also provided with the electromagnetic adsorption type manipulator for described Working piece positioning device automatic charging and self-emptying.It is that this full-automatic numerical control gear grinding machines carry out the efficient accurately basis of grinding that workpiece carries out accurately location before grinding, the present invention carries out programming Control by digital control system to Working piece positioning device and electromagnetic mechanical hand, comprise the steps S1: utilize manipulator that workpiece is placed on locating platform 61; S2: start front push cylinder 63 and be pushed to fixed position, front push cylinder 63 forms perpendicular positioning angle with locating piece 62; S3: start coarse positioning cylinder 65 and be pushed to fixed position, making the gap between workpiece and front push cylinder 63 or coarse positioning cylinder 65 is 1-5mm, complete coarse positioning, now workpiece can the region between coarse positioning cylinder 65, front push cylinder 63 and locating piece 62 in transverse shifting; S4: start thruster cylinder 64 and also workpiece is pushed to the position closely offseting with locating piece 62, under the thrust of thruster cylinder 64, workpiece and locating piece 62 closely offset, now workpiece can not transverse shifting; S5: start fine positioning cylinder 66 and workpiece be pushed to the position closely offseting with front push cylinder 63, the thrust of fine positioning cylinder 66 is greater than the thrust of thruster cylinder 64 but is less than the thrust of front push cylinder 63, enclose and cover in the locating area being formed to guarantee that workpiece is accurately positioned at fine positioning cylinder 66, thruster cylinder 64, front push cylinder 63 and locating piece 62, complete fine positioning; S6: start lift cylinder 67 workpiece is securely interposed on locating platform 61, complete workpiece location.
Full-automatic numerical control gear grinding machines of the present invention, workpiece to be ground describes as an example of pruner blade example, pruner blade is provided with and somely sharps teeth 91 and cognate 92, when use, first pruner blade is laterally fixed on the workpiece processing stations 25 of horizontal sliding seat 24, then according to the side land 911 of 91 both sides that sharp teeth of pruner blade, included angle A between 912 regulates rotary frame 30 to horizontally rotate angle on board 10, suppose the side land 911 of both sides, 912 for being symmetrical arranged, the horizontally rotate angle of rotary frame 30 on board 10 is A/2 so, making the angle between longitudinal rail 33 and cross slide way 23 is 90 °-A/2, fixing rotary frame 30, then according to sharping teeth 91 side land 911, 912 draft angle B regulates linking arm 41 to spin upside down angle on longitudinal sliding motion seat 40, making the grinding face of emery wheel 43 and the angle of board 10 planes is B, be fixedly connected with arm 41, utilize horizontal servomotor 21 to drive transverse ball lead screw 22 to rotate, and then drive horizontal sliding seat 24 lateral displacement on cross slide way 23, make sharping teeth of pruner blade 91 be positioned at longitudinal sliding motion seat 40 longitudinally on the feeding circuit of guide rail 33, then utilize servo longitudinal motor 31 to drive longitudinal ball screw 32 to rotate, and then drive longitudinal sliding motion seat 40 length travel on longitudinal rail 33, the vertical and horizontal are here not definitely vertical, in fact the angle between described vertical and horizontal is 90 °-A/2, longitudinal sliding motion seat 40 is in place to be moved past and in journey, drives longitudinally guide rail 33 displacements of emery wheel 43, the side land 911 of emery wheel 43 91 1 sides that sharp teeth to pruner blade under the drive of drive motors 42, 912 carry out grinding, in like manner can be to the side land 911 of 91 opposite sides that sharp teeth of pruner blade, 912 carry out grinding, and 91 the top land 913 of sharping teeth of pruner blade is carried out to grinding, when 91 the top land 913 of sharping teeth is carried out to grinding, the angle of the grinding face of emery wheel 43 and board 10 planes is adjusted to C, keep longitudinal rail 33 vertical with cross slide way 23.
The side land 911 of sharp teeth 91 both sides of the present invention to pruner blade, 912 and top land 913 while carrying out grinding, pruner blade remains inactive state, thereby only need to control servo longitudinal motor 31 and drive longitudinally guide rail 33 displacements of longitudinal sliding motion seat 40, and then make longitudinally guide rail 33 displacements of emery wheel 43 and 91 advance to grinding rectilinear direction is enterprising to sharping teeth, longitudinally ball screw 32 drives its running status of longitudinal sliding motion seat 40 displacements stable, therefore can there is not the phenomenon of sawtooth or crimping in 91 lands that grind that sharp teeth of pruner blade, grinding accuracy is high, and the relative board 10 of rotary frame 30 of the present invention horizontally rotate regulate and linking arm 41 spin upside down regulate easy and firm, easy operating, can significantly promote grinding efficiency.
While utilizing in addition full-automatic numerical control gear grinding machines of the present invention to carry out grinding to the lead angle R angle of pruner blade, can start servo longitudinal motor 31 and horizontal servomotor 21 simultaneously, utilize interpolation algorithm to calculate the actuating speed of servo longitudinal motor 31 and horizontal servomotor 21, make emery wheel 43 and the grinding track of pruner blade approach R angle.
As preferably, the board 10 of full-automatic numerical control gear grinding machines of the present invention is provided with two symmetrically arranged described rotary frames 30, so that the side land 911,912 of 91 both sides that sharp teeth to pruner blade carries out grinding.
Described worm-and-wheel gear comprises the worm screw 45 being set up on longitudinal sliding motion seat 40 and the worm gear 44 being connected with linking arm 41, worm screw 45 is in transmission connection with worm gear 44, worm-and-wheel gear effect is to make linking arm 41 realize adjustable spinning upside down in the mode of mechanical connection with longitudinal sliding motion seat 40 to be connected, a side for worm screw 45 is provided with regulating handle 54, on regulating handle 54, be also provided with worm screw 45 locking nuts, can make the angle that spins upside down of linking arm 41 keep locking condition, worm-and-wheel gear acts on linking arm 41 after adjusting power is turned to, make linking arm 41 spin upside down state and static locking condition is more stable.
The above is only preferred embodiments of the present invention, and the equivalence of doing according to structure, feature and principle described in patent claim of the present invention therefore all changes or modifies, and is included in patent claim of the present invention.
Claims (9)
1. full-automatic numerical control gear grinding machines, is characterized in that: comprise board (10),
Board (10) is provided with cross slide way (23), horizontal servomotor (21), transverse ball lead screw (22) and horizontal sliding seat (24), laterally servomotor (21) is in transmission connection with transverse ball lead screw (22), laterally sliding seat (24) under the driving effect of transverse ball lead screw (22) along cross slide way (23) displacement; On described horizontal sliding seat (24), be provided with workpiece processing stations (25);
Board (10) is provided with the rotary frame (30) that can horizontally rotate and the clamping plate (35) for fixing rotary frame (30), rotary frame (30) is provided with longitudinal rail (33), servo longitudinal motor (31), longitudinal ball screw (32) and longitudinal sliding motion seat (40), servo longitudinal motor (31) is in transmission connection with longitudinal ball screw (32), longitudinal sliding motion seat (40) longitudinally guide rail (33) displacement under the driving effect of longitudinal ball screw (32); Described longitudinal sliding motion seat (40) is upper is connected with the linking arm (41) that can spin upside down by worm-and-wheel gear, and linking arm (41) is provided with drive motors (42) and emery wheel (43), and drive motors (42) is in transmission connection with emery wheel (43).
2. full-automatic numerical control gear grinding machines according to claim 1, it is characterized in that: described workpiece processing stations (25) is provided with Working piece positioning device, described Working piece positioning device comprises locating platform (61), one side of locating platform (61) is provided with locating piece (62), another side of locating platform (61) is provided with thruster cylinder (64), the front end of locating platform (61) is provided with front push cylinder (63), the rear end of locating platform (61) is provided with coarse positioning cylinder (65) and fine positioning cylinder (66), the top of locating platform (61) is provided with lift cylinder (67).
3. full-automatic numerical control gear grinding machines according to claim 2, is characterized in that: on described board (10), be also provided with the electromagnetic adsorption type manipulator for described Working piece positioning device automatic charging and self-emptying.
4. full-automatic numerical control gear grinding machines according to claim 1, is characterized in that: described board (10) is provided with two symmetrically arranged described rotary frames (30).
5. full-automatic numerical control gear grinding machines according to claim 1, it is characterized in that: described worm-and-wheel gear comprises the worm screw (45) being set up on described longitudinal sliding motion seat (40) and the worm gear (44) being connected with described linking arm (41), worm screw (45) is in transmission connection with worm gear (44), and a side for worm screw (45) is provided with regulating handle (54).
6. full-automatic numerical control gear grinding machines according to claim 1, is characterized in that: described rotary frame (30) one end is rotationally connected by bearing pin and board (10), and the other end is provided with adjusting rod (53).
7. full-automatic numerical control gear grinding machines according to claim 1, it is characterized in that: described board (10) is provided with the dial (51) that can identify described rotary frame (30) and horizontally rotate angle, described longitudinal sliding motion seat (40) is provided with the scale plate (52) that can identify described linking arm (41) and spin upside down angle.
8. full-automatic numerical control gear grinding machines according to claim 1, it is characterized in that: described longitudinal slide rail is provided with the travel switch (34) of controlling described longitudinal sliding motion seat (40) shift length, the installation site of described travel switch (34) on longitudinal slide rail is adjustable.
9. the workpiece localization method of a kind of full-automatic numerical control gear grinding machines as claimed in claim 1, is characterized in that, comprise the steps,
S1: utilize manipulator that workpiece is placed on locating platform (61);
S2: start front push cylinder (63) and be pushed to fixed position;
S3: start coarse positioning cylinder (65) and be pushed to fixed position, making the gap between workpiece and front push cylinder (63) or coarse positioning cylinder (65) is 1-5mm;
S4: start thruster cylinder (64) and workpiece be pushed to the position closely offseting with locating piece (62);
S5: start fine positioning cylinder (66) and workpiece be pushed to the position closely offseting with front push cylinder (63);
S6: start lift cylinder (67) workpiece is securely interposed in to locating platform (61) above, complete workpiece location.
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| CN201410032833.6A CN103786075B (en) | 2014-01-23 | 2014-01-23 | Full-automatic numerical control gear grinding machines |
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| CN201410032833.6A CN103786075B (en) | 2014-01-23 | 2014-01-23 | Full-automatic numerical control gear grinding machines |
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| CN103786075B CN103786075B (en) | 2016-01-20 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607720A (en) * | 2015-02-10 | 2015-05-13 | 苏州全丰精密机械有限公司 | Gear grinding machine and gear grinding method thereof |
| CN105364646A (en) * | 2015-11-24 | 2016-03-02 | 江门市江海区杰能机电科技有限公司 | Tool sharpener with stroke self-locking structure |
| CN107745293A (en) * | 2017-11-25 | 2018-03-02 | 江西老宗医医疗器械有限公司 | A kind of needle section counter blade grinding attachment of sterile needle knife |
| CN107932205A (en) * | 2017-12-04 | 2018-04-20 | 杭州佰牛科技有限公司 | A kind of agricultural rice harvesting serrated knife milling drum |
| CN108406455A (en) * | 2018-04-02 | 2018-08-17 | 苏州盟川自动化科技有限公司 | A kind of garden instrument blade mill edge cutting device |
| CN108581652A (en) * | 2018-04-02 | 2018-09-28 | 苏州盟川自动化科技有限公司 | A kind of charging and discharging mechanism of garden instrument blade mill edge cutting device |
| CN109352437A (en) * | 2018-11-30 | 2019-02-19 | 海宁市兴达刀剪有限公司 | The automatic roll flute equipment of blade |
| CN111300233A (en) * | 2020-03-17 | 2020-06-19 | 陈紫璇 | Precision grinding machine for double end faces of workpiece |
| CN113084605A (en) * | 2021-04-26 | 2021-07-09 | 余姚市银达电器有限公司 | Numerical control gear grinding machine |
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| CN2181364Y (en) * | 1993-11-01 | 1994-11-02 | 潍坊长城门窗职工技协综合服务部 | Saw blade tooth sharpening machine |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607720A (en) * | 2015-02-10 | 2015-05-13 | 苏州全丰精密机械有限公司 | Gear grinding machine and gear grinding method thereof |
| CN105364646A (en) * | 2015-11-24 | 2016-03-02 | 江门市江海区杰能机电科技有限公司 | Tool sharpener with stroke self-locking structure |
| CN107745293B (en) * | 2017-11-25 | 2023-12-05 | 江西老宗医医疗器械有限公司 | Needle head opposite sharpening device of sterile needle knife |
| CN107745293A (en) * | 2017-11-25 | 2018-03-02 | 江西老宗医医疗器械有限公司 | A kind of needle section counter blade grinding attachment of sterile needle knife |
| CN107932205A (en) * | 2017-12-04 | 2018-04-20 | 杭州佰牛科技有限公司 | A kind of agricultural rice harvesting serrated knife milling drum |
| CN107932205B (en) * | 2017-12-04 | 2019-10-22 | 郦国青 | A kind of agricultural rice harvesting serrated knife milling drum |
| CN108406455A (en) * | 2018-04-02 | 2018-08-17 | 苏州盟川自动化科技有限公司 | A kind of garden instrument blade mill edge cutting device |
| CN108581652A (en) * | 2018-04-02 | 2018-09-28 | 苏州盟川自动化科技有限公司 | A kind of charging and discharging mechanism of garden instrument blade mill edge cutting device |
| CN109352437A (en) * | 2018-11-30 | 2019-02-19 | 海宁市兴达刀剪有限公司 | The automatic roll flute equipment of blade |
| CN109352437B (en) * | 2018-11-30 | 2023-09-19 | 海宁市兴达刀剪有限公司 | Automatic tooth grinding equipment for blade |
| CN111300233B (en) * | 2020-03-17 | 2021-06-18 | 东台市双厦工具有限公司 | Precision grinding machine for double end faces of workpiece |
| CN111300233A (en) * | 2020-03-17 | 2020-06-19 | 陈紫璇 | Precision grinding machine for double end faces of workpiece |
| CN113084605A (en) * | 2021-04-26 | 2021-07-09 | 余姚市银达电器有限公司 | Numerical control gear grinding machine |
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| CN103786075B (en) | 2016-01-20 |
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Effective date of registration: 20151209 Address after: 246000 Huaining Industrial Park, Anqing, Anhui Applicant after: ANQING CHEERY ELECTRICAL CO., LTD. Address before: West Street of Fenghua city in Zhejiang province is 315500 Ningbo City Road No. 20 Applicant before: Ningbo Cheery Garden Tools Co., Ltd. |
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