CN105195833B - Numerical control internal tooth honing wheel knife rest - Google Patents
Numerical control internal tooth honing wheel knife rest Download PDFInfo
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- CN105195833B CN105195833B CN201510677644.9A CN201510677644A CN105195833B CN 105195833 B CN105195833 B CN 105195833B CN 201510677644 A CN201510677644 A CN 201510677644A CN 105195833 B CN105195833 B CN 105195833B
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Abstract
A kind of numerical control internal tooth honing wheel knife rest, including knife bar, the cutter head being connected with knife bar, cutter head includes the fixture with fixing hole, rotary drive, interior top gem of a girdle-pendant wheel and interior top gem of a girdle-pendant wheel holder, fixture is fixedly connected with knife bar, knife bar is vertical with the axis of the fixing hole of fixture, interior top gem of a girdle-pendant wheel holder is arranged in the fixing hole of fixture, interior top gem of a girdle-pendant wheel holder can relatively rotate with fixture, interior top gem of a girdle-pendant wheel is arranged in interior top gem of a girdle-pendant wheel holder, rotary drive penetrates the fixing hole of fixture inside knife bar, and it is connected with interior top gem of a girdle-pendant wheel holder, rotary drive drive installation has the interior top gem of a girdle-pendant wheel holder of interior top gem of a girdle-pendant wheel and fixture to relatively rotate, so that interior top gem of a girdle-pendant wheel is pointed to do flank of tooth finishing by gear honing wheel in interior top gem of a girdle-pendant wheel.
Description
Technical field
The present invention relates to hardened face gear precision processing technology field, more particularly to a kind of numerical control internal tooth honing wheel knife rest.
Background technology
High-precision hardened face gear is must can not in the fields such as automobile, wind-power electricity generation, ship, lathe, Aero-Space, high ferro
Few mechanical transmission component.Counted according to China Gear professional association, China Gear market scale, which expects 2015, reaches 2200-
250000000000 yuan, have benefited from the fast development of the industries such as automobile, wind-powered electricity generation, high ferro, more than the 50% newly-increased gear market demand comes from
These industries.The country long-life of the basic component such as emphasis support gear, antifatigue, structure loss of weight, nothing during " 12 "
The key technologies such as stress concentration manufacture and assembly break through.The main purpose of Hardened gear face precision gear finishing step is to realize gear
Maximum bearing capacity and minimum drive noise.High-precision hardened gear finishing process is to realize high quality gear maximum
Effective manufacturing technology of bearing capacity and minimum drive noise.The processing technologys such as traditional gear hobbing/gear shaping-shaving/roll flute-heat treatment
Gear transmission accuracy, rotational noise and the requirement for reducing manufacturing cost etc. in high-end dynamoelectric equipment can not have been met,
And corresponding Hardened gear face method for fine finishing --- strength gear honing, skiving etc., turn into the dominant direction of Gear Manufacturing Technology research.
From the later stage fifties in last century the U.S. by external toothing gear honing process technology apply since, gear honing process technology by
Gradually turn into one of main method of hardened face gear finishing.Research finds that gear honing can not only effectively reduce gear noise and surface
Roughness, and the distinctive surface texture featur that the flank of tooth is formed after gear honing can strengthen flank of tooth wearability so that and gear honing turns into
A kind of fine-processing technique commonly used after hardened face gear grinding.The top gem of a girdle-pendant be present and cut that surplus is small, and highest only has in traditional gear honing process technology
10-15 μm of cutting output；Crudy depends on one of manufacturing procedure（Shaving etc.）Ensure；Tooth form, teeth directional after the top gem of a girdle-pendant are repaiied
Positive ability；Honing wheel is manufactured using epoxide resin material, and precision is relatively low, and service life is short, and Gear shape process precision is not high to be lacked
Fall into.So that the application that the free top gem of a girdle-pendant cuts processing is subject to certain restrictions, otherwise for remove the residual stress after being heat-treated, smoothing,
Touch knock with the aided process such as deburring, or for reducing High-performance gear noise after being ground, strengthen flank of tooth compression, improve
The occasions such as the service life of gear, the larger development for constraining gear honing process technology.
Hardened gear face method for fine finishing mainly has Hardened gear face shaving, Hardened gear face roll flute, the rolling of Hardened gear face essence and hard tooth after heat treatment
Face gear honing etc..When hardened face gear machining accuracy is controlled in the precision of ISO5 level even more highs, before manufacturing cost maintains an equal level
Put, strength gear honing process technology disclosure satisfy that high-end equipment to the accuracy of gear, bearing capacity, movement rate, stationarity, work
The requirement of the transmission performance such as life-span and noise.Foreign countries are wideling popularize this using gear hobbing-heat treatment-strength gear honing at present
New process for processing, but the country is widely popularized and popularized and also has difficulties.
The processing of numerical control internal honing wheel strength gear honing is with doing engaged transmission by gear honing wheel, quite using internal tooth wheel shape honing wheel
In a pair of crossed helical involute gears, a kind of flank of tooth of honing essence is carried out using the relative sliding velocity between its flank of tooth and pressure
Processing method.Numerical control internal honing wheel strength gear honing machine is batch machining precision external tooth, duplicate gear, shaft gear, the pass of barreled tooth flank
Button apparatus, can be to hardening or non-hardenable cylinder is straight, bevel wheel machining.Gear honing production efficiency is high, and cost is low, can reduce gear
Noise, gear capacity is improved, extend gear life, reduced tooth-face roughness, tooth-face roughness can be machined to
Below Ra0.63um, the accuracy of gear can reach 6 ~ 7 grades.For the processing of external tooth top gem of a girdle-pendant wheel gear honing, it has higher tooth
Shape and tooth pitch precision.Interior honing wheel knife rest is to realize one of most important functional part of above-mentioned process, but existing interior
Honing wheel cutter frame structure is single, it is impossible to meets the needs of market polymorphic type.
The content of the invention
In consideration of it, it is necessary to provide a kind of simple in construction and convenient use numerical control internal tooth honing wheel knife rest.
A kind of numerical control internal tooth honing wheel knife rest, including knife bar, the cutter head that is connected with knife bar, cutter head are included with fixing hole
Fixture, rotary drive, interior top gem of a girdle-pendant wheel and interior top gem of a girdle-pendant wheel holder, fixture are fixedly connected with knife bar, and knife bar and fixture are consolidated
Determine that the axis in hole is vertical, interior top gem of a girdle-pendant wheel holder is arranged in the fixing hole of fixture, and interior top gem of a girdle-pendant wheel holder can with fixture
Relatively rotating, interior top gem of a girdle-pendant wheel is arranged in interior top gem of a girdle-pendant wheel holder, and rotary drive penetrates the fixing hole of fixture inside knife bar, and
It is connected with interior top gem of a girdle-pendant wheel holder, rotary drive drive installation has the interior top gem of a girdle-pendant wheel holder of interior top gem of a girdle-pendant wheel and fixture to relatively rotate,
So that interior top gem of a girdle-pendant wheel is pointed to do flank of tooth finishing by gear honing wheel in interior top gem of a girdle-pendant wheel.
In above-mentioned numerical control internal tooth honing wheel knife rest, one end of knife bar is connected with plover mill machine, the other end and cutter head of knife bar
Connection, the fixture of cutter head are fixedly connected with knife bar, and knife bar is vertical with the axis of the fixing hole of fixture, interior top gem of a girdle-pendant wheel holder
In the fixing hole of fixture, interior top gem of a girdle-pendant wheel holder can relatively rotate with fixture, and interior top gem of a girdle-pendant wheel presss from both sides installed in interior top gem of a girdle-pendant wheel
In gripping member, rotary drive penetrates the fixing hole of fixture inside knife bar, and is connected with interior top gem of a girdle-pendant wheel holder, and plover mill machine is
Rotary drive provides electric energy, and rotary drive drive installation has the interior top gem of a girdle-pendant wheel holder of interior top gem of a girdle-pendant wheel and fixture to relatively rotate,
The internal tooth honing wheel knife rest unitary rotation and movement of digital control system control simultaneously so that interior top gem of a girdle-pendant wheel be pointed in interior top gem of a girdle-pendant wheel by gear honing
Wheel does flank of tooth finishing.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the numerical control internal tooth honing wheel knife rest of a better embodiment.
Accompanying drawing 2 is the configuration schematic diagram of numerical control internal tooth honing wheel knife rest in Fig. 1.
Accompanying drawing 3 is the configuration schematic diagram of another angle of numerical control internal tooth honing wheel knife rest in Fig. 1.
Accompanying drawing 4 is the cross-sectional view of numerical control internal tooth honing wheel knife rest in Fig. 1.
In figure：Numerical control internal tooth honing wheel knife rest 10, knife bar 20, cutter head 30, fixture 31, fixing hole 310, through hole
3100th, before the first positioning annular convex 3101, second positions annular convex 3102, fixed mount 311, annular seal 312, ring-type
Cover plate 313, the 3rd ring-type positioning convex portion 3131, fourth annular positioning convex portion 3132, ring-type back shroud 314, the positioning of the 5th ring-type
Convex portion 3141, the 6th ring-type positioning convex portion 3142, the 7th ring-type positioning convex portion 3143, rotary drive 32, interior top gem of a girdle-pendant wheel 33, positioning
Groove 330, interior top gem of a girdle-pendant wheel holder 34, taper fixing hole 340, the first rolling bearing 342, the second rolling bearing 343, worm gear part 344,
Taper through hole 3440, ring-type circular-arc tooth surface 3441, locating slot 3442, reducing coning sleeve 345, locating convex block 3450.
Embodiment
It refer to Fig. 1 to Fig. 4, the cutter head 30 that numerical control internal tooth honing wheel knife rest 10 includes knife bar 20, is connected with knife bar 20, knife
First 30 include fixture 31, rotary drive 32, interior top gem of a girdle-pendant wheel 33 and interior top gem of a girdle-pendant wheel holder 34 with fixing hole 310, fixture
31 are fixedly connected with knife bar 20, and knife bar 20 is vertical with the axis of the fixing hole 310 of fixture 31, and interior top gem of a girdle-pendant wheel holder 34 is installed
In the fixing hole 310 of fixture 31, interior top gem of a girdle-pendant wheel holder 34 can relatively rotate with fixture 31, and interior top gem of a girdle-pendant wheel 33 is arranged on interior
In top gem of a girdle-pendant wheel holder 34, rotary drive 32 penetrates the fixing hole 310 of fixture 31 inside knife bar 20, and is clamped with interior top gem of a girdle-pendant wheel
Part 34 connects, and the interior top gem of a girdle-pendant wheel holder 34 that the drive installation of rotary drive 32 has interior top gem of a girdle-pendant wheel 33 relatively rotates with fixture 31, with
Interior top gem of a girdle-pendant wheel 33 is set to be pointed to do flank of tooth finishing by gear honing wheel in interior top gem of a girdle-pendant wheel 33.Wherein, the drive end of rotary drive 32 is
Worm screw, it is driven between rotary drive 32 and interior top gem of a girdle-pendant wheel holder 34 using worm screw, worm gear relational implementation.
Interior top gem of a girdle-pendant wheel holder 34 has taper fixing hole 340, and positioning convex portion is provided with the hole wall of taper fixing hole 340,
The outer wall of interior top gem of a girdle-pendant wheel 33 is engaged with the shape of the taper fixing hole 340 of interior top gem of a girdle-pendant wheel holder 34, is set on the outer wall of interior top gem of a girdle-pendant wheel 33
Locating slot 330 is equipped with, when interior top gem of a girdle-pendant wheel 33 is arranged in the taper fixing hole 340 of interior top gem of a girdle-pendant wheel holder 34, taper fixing hole 340
Positioning convex portion on hole wall is in the locating slot 330 on the outer wall of interior top gem of a girdle-pendant wheel 33.
In the present embodiment, interior top gem of a girdle-pendant wheel holder 34 includes the first rolling bearing 342, the second rolling bearing 343, worm gear
Part 344, reducing coning sleeve 345, worm gear part 344 are column, and worm gear part 344 has taper through hole 3440, the outer wall of worm gear part 344
On also set up the ring-type circular-arc tooth surface 3441 coordinated with worm screw, be provided with locating slot 3442 on the inwall of taper through hole 3440, it is fixed
Position groove 3442 is close to the large port of taper through hole 3440, and locating slot 3442 extends to the large port of taper through hole 3440, reducing
Coning sleeve 345 is engaged with taper through hole 3440, and locating convex block 3450, convex are provided with the outer wall of reducing coning sleeve 345
For block 3450 close to the large port of reducing coning sleeve 345, and locating convex block 3450 extends to the large port of reducing coning sleeve 345, becomes
Footpath coning sleeve 345 forms the taper fixing hole 340, and the positioning convex portion, interior top gem of a girdle-pendant wheel are set on the inwall of reducing coning sleeve 345
33 when being arranged in reducing coning sleeve 345, and the positioning convex portion on the inwall of reducing coning sleeve 345 is on the outer wall of interior top gem of a girdle-pendant wheel 33
Locating slot 330 in；First rolling bearing 342, the second rolling bearing 343 outer ring and the fixing hole 310 of fixture 31 it is interior
Wall is relatively fixed, the first rolling bearing 342, the second rolling bearing 343 inner ring corresponding to be set in the both ends of worm gear part 312,
And first rolling bearing 342, the inner ring of the second rolling bearing 343 are fixedly connected with the both ends of worm gear part 312.
Further, after fixture 31 includes fixed mount 311, two annular seals 312, ring-type front shroud 313, ring-types
Cover plate 314, the fixing hole 310 is offered on fixed mount 311, is offered on the inwall of the fixing hole 310 for rotation driving
What part 32 passed through passes through hole 3100, and the positioning of the first positioning annular convex 3101, second is provided with the inwall of the fixing hole 310
Annular convex 3102, the upper shed of the close fixing hole 310 corresponding to the first positioning annular convex 3101, the second positioning ring-type
Close to the under shed of the fixing hole 310, after worm gear part 312 is arranged in the fixing hole 310, first corresponding to convex portion 3102
Corresponding to rolling bearing 342, the second rolling bearing 343 after the upper shed, under shed installation of the fixing hole 310, first is fixed
Position annular convex 3101 stops that the outer ring of the first rolling bearing 342, the second positioning annular convex 3102 stop the second rolling bearing
343 outer ring, so that the distance between the first rolling bearing 342, second rolling bearing 343 are fixed, two annular seals 312
After corresponding upper shed from the fixing hole 310, under shed are installed, corresponding to ring-type front shroud 313, ring-type back shroud 314
It is covered in the upper shed of the fixing hole 310, under shed, and is fixedly connected with fixed mount 311, by interior top gem of a girdle-pendant wheel holder 34
It is fixed in the fixing hole 310.
Further, it is provided with the 3rd ring-type convex on the face relative with ring-type back shroud 314 of ring-type front shroud 313
Portion 3131, fourth annular positioning convex portion 3132, is provided with the face relative with ring-type front shroud 313 of ring-type back shroud 314
Five ring-type positioning convex portions 3141, the 6th ring-type positioning convex portion 3142, the 7th ring-type positioning convex portion 3143, ring-type front shroud 313
3rd ring-type positioning convex portion 3131 abuts with the outer ring of the first rolling bearing 342, the fourth annular convex of ring-type front shroud 313
Portion 3132 and the end abutment of worm gear part 344, the 5th ring-type positioning convex portion 3141 of ring-type back shroud 314 and the second rolling bearing
343 outer ring abuts, the 6th ring-type positioning convex portion 3142 of ring-type back shroud 314 and the other end and the reducing of worm gear part 344
The end abutment of coning sleeve 345, the 7th ring-type positioning convex portion 3143 and the end abutment of interior top gem of a girdle-pendant wheel 33 of ring-type back shroud 314,
The first rolling bearing 342, the second rolling bearing 343, worm gear part 344, reducing coning sleeve 345 and interior top gem of a girdle-pendant wheel 33 are fixed on this
Together.
Claims (3)
- A kind of 1. numerical control internal tooth honing wheel knife rest, it is characterised in that：The cutter head being connected including knife bar, with knife bar, cutter head include tool Fixture, rotary drive, interior top gem of a girdle-pendant wheel and interior top gem of a girdle-pendant wheel holder, the fixture for having fixing hole are fixedly connected with knife bar, knife bar with The axis of the fixing hole of fixture is vertical, interior top gem of a girdle-pendant wheel holder be arranged on fixture fixing hole in, interior top gem of a girdle-pendant wheel holder with Fixture can be relatively rotated, and interior top gem of a girdle-pendant wheel is arranged in interior top gem of a girdle-pendant wheel holder, and rotary drive penetrates fixture inside knife bar Fixing hole, and be connected with interior top gem of a girdle-pendant wheel holder, rotary drive drive installation has interior top gem of a girdle-pendant wheel holder and the fixation of interior top gem of a girdle-pendant wheel Part relatively rotates, so that interior top gem of a girdle-pendant wheel is pointed to do flank of tooth finishing by gear honing wheel in interior top gem of a girdle-pendant wheel；Wherein, the drive of rotary drive Moved end is worm screw, is driven between rotary drive and interior top gem of a girdle-pendant wheel holder using worm screw, worm gear relational implementation；Interior top gem of a girdle-pendant wheel folder Gripping member has taper fixing hole, and positioning convex portion is provided with the hole wall of taper fixing hole, and the outer wall of interior top gem of a girdle-pendant wheel clamps with interior top gem of a girdle-pendant wheel The shape of the taper fixing hole of part is engaged, and locating slot is provided with the outer wall of interior top gem of a girdle-pendant wheel, and interior top gem of a girdle-pendant wheel clamps installed in interior top gem of a girdle-pendant wheel When in the taper fixing hole of part, the positioning convex portion on the hole wall of taper fixing hole is embedded in the locating slot on the outer wall of interior top gem of a girdle-pendant wheel, Wherein, interior top gem of a girdle-pendant wheel holder includes the first rolling bearing, the second rolling bearing, worm gear part, reducing coning sleeve, and worm gear part is post Shape, worm gear part have the ring-type circular-arc tooth surface for also setting up on the outer wall of taper through hole, worm gear part and coordinating with worm screw, taper through hole It is provided with locating slot on inwall, locating slot is close to the large port of taper through hole, and locating slot extends to the large port of taper through hole, Reducing coning sleeve is engaged with taper through hole, locating convex block is provided with the outer wall of reducing coning sleeve, locating convex block is close to reducing The large port of coning sleeve, and locating convex block extends to the large port of reducing coning sleeve, reducing coning sleeve forms the taper and fixed Hole, the positioning convex portion is set on the inwall of reducing coning sleeve, when interior top gem of a girdle-pendant wheel is arranged in reducing coning sleeve, reducing coning sleeve Positioning convex portion on inwall is in the locating slot on the outer wall of interior top gem of a girdle-pendant wheel；The outer ring of first rolling bearing, the second rolling bearing Be relatively fixed with the inwall of the fixing hole of fixture, the first rolling bearing, the second rolling bearing inner ring corresponding to be set in snail The both ends of gear member, and the inner ring of the first rolling bearing, the second rolling bearing is fixedly connected with the both ends of worm gear part.
- 2. the numerical control internal tooth honing wheel knife rest as described in claim 1, it is characterised in that：Fixture include fixed mount, two Annular seal, ring-type front shroud, ring-type back shroud, offer the fixing hole on fixed mount, on the inwall of the fixing hole Offer and pass through hole for what rotary drive passed through, the first positioning annular convex, second are provided with the inwall of the fixing hole Annular convex, the upper shed of the close fixing hole corresponding to the first positioning annular convex, second positions corresponding to annular convex Close to the under shed of the fixing hole, after worm gear part is arranged in the fixing hole, the first rolling bearing, the second rolling bearing pair Answer after the upper shed of the fixing hole, under shed are installed, the first positioning annular convex stop the first rolling bearing outer ring, Second positioning annular convex stop the second rolling bearing outer ring so that between the first rolling bearing, the second rolling bearing away from From fixation, corresponding to two annular seals after the upper shed, under shed installation of the fixing hole, ring-type front shroud, ring-type The upper shed of the fixing hole is covered in corresponding to back shroud, under shed, and is fixedly connected with fixed mount, interior top gem of a girdle-pendant wheel is pressed from both sides Gripping member is fixed in the fixing hole.
- 3. the numerical control internal tooth honing wheel knife rest as described in claim 2, it is characterised in that：Ring-type front shroud with after ring-type Be provided with the 3rd ring-type positioning convex portion, fourth annular positioning convex portion on the relative face of cover plate, ring-type back shroud with ring-type protecgulum The 5th ring-type positioning convex portion, the 6th ring-type positioning convex portion, the 7th ring-type positioning convex portion, ring-type protecgulum are provided with the relative face of plate 3rd ring-type positioning convex portion of plate abuts with the outer ring of the first rolling bearing, the fourth annular positioning convex portion of ring-type front shroud and snail The end abutment of gear member, the 5th ring-type positioning convex portion of ring-type back shroud abut with the outer ring of the second rolling bearing, ring-type bonnet 6th ring-type positioning convex portion of plate and the other end of worm gear part and the end abutment of reducing coning sleeve, the 7th of ring-type back shroud the Ring-type positioning convex portion and the end abutment of interior top gem of a girdle-pendant wheel, the first rolling bearing, the second rolling bearing, worm gear part, reducing are bored with this Degree set and interior top gem of a girdle-pendant wheel are fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510677644.9A CN105195833B (en) | 2015-10-20 | 2015-10-20 | Numerical control internal tooth honing wheel knife rest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510677644.9A CN105195833B (en) | 2015-10-20 | 2015-10-20 | Numerical control internal tooth honing wheel knife rest |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105195833A CN105195833A (en) | 2015-12-30 |
| CN105195833B true CN105195833B (en) | 2017-12-12 |
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ID=54943967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510677644.9A Active CN105195833B (en) | 2015-10-20 | 2015-10-20 | Numerical control internal tooth honing wheel knife rest |
Country Status (1)
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| CN (1) | CN105195833B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309502B (en) * | 2017-07-28 | 2023-06-13 | 北方民族大学 | Numerical control internal tooth gear honing electromechanical transmission gear honing frame |
| CN113751809B (en) * | 2020-12-23 | 2022-09-30 | 宁夏奇点新动力科技有限公司 | Honing wheel frame of gear honing machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9300936U1 (en) * | 1992-02-01 | 1993-05-27 | Präwema Werkzeugmaschinenfabrik GmbH, 3440 Eschwege | Machine for hard finishing of spur gear tooth flanks |
| DE4329358C1 (en) * | 1993-09-01 | 1994-10-27 | Hurth Maschinen Werkzeuge | Method of finishing gears with an internally toothed tool as well as a method of dressing this tool and dressing wheel suitable for this purpose |
| JPH07205026A (en) * | 1994-01-05 | 1995-08-08 | Toyo A Tec Kk | Dressing device for gear honing inner tooth grinding wheel |
| DE50115693D1 (en) * | 2001-12-13 | 2010-12-16 | Gleason Works | Method for producing an internally toothed honing ring |
| DE102005024127B4 (en) * | 2005-05-23 | 2008-11-06 | Emag Holding Gmbh | Process for fine machining of gears |
| DE102010024366A1 (en) * | 2010-06-18 | 2011-12-22 | Präwema Antriebstechnik GmbH | Method for profiling a honing tool for honing a toothing of a workpiece |
| CN205043270U (en) * | 2015-10-20 | 2016-02-24 | 北方民族大学 | Numerical control internal tooth honing wheel knife rest |
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2015
- 2015-10-20 CN CN201510677644.9A patent/CN105195833B/en active Active
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| CN105195833A (en) | 2015-12-30 |
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Effective date of registration: 20190104 Address after: 750002 Building No. 5, Jinfeng Industrial Park, Jingkai District, Yinchuan City, Ningxia Hui Autonomous Region, Konan Zhongchuang Space No. 14 Patentee after: Ningxia Huirongsheng Intelligent Technology Co., Ltd. Address before: 750030 No. 204 Wenchang North Street, Xixia District, Yinchuan City, Ningxia Hui Autonomous Region Patentee before: Northern National University |
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Effective date of registration: 20211102 Address after: 750021 No. 204, Wenchang North Street, Xixia District, the Ningxia Hui Autonomous Region, Yinchuan Patentee after: BEIFANG MINZU University Address before: 750002 Building No. 5, Jinfeng Industrial Park, Jingkai District, Yinchuan City, Ningxia Hui Autonomous Region, Konan Zhongchuang Space No. 14 Patentee before: Ningxia Huirongsheng Intelligent Technology Co.,Ltd. |
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Effective date of registration: 20220527 Address after: 750000 Workshop 13, small and medium-sized enterprise Pioneer Park, Yinchuan economic and Technological Development Zone, Ningxia Hui Autonomous Region Patentee after: NINGXIA HONGYUAN GREAT WALL MACHINE TOOL CO.,LTD. Address before: 750021 No. 204, Wenchang North Street, Xixia District, the Ningxia Hui Autonomous Region, Yinchuan Patentee before: BEIFANG MINZU University |