CN105234505A - Double-shaft automatic tapping machine - Google Patents
Double-shaft automatic tapping machine Download PDFInfo
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- CN105234505A CN105234505A CN201510799963.7A CN201510799963A CN105234505A CN 105234505 A CN105234505 A CN 105234505A CN 201510799963 A CN201510799963 A CN 201510799963A CN 105234505 A CN105234505 A CN 105234505A
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Abstract
The invention belongs to the field of machining and specifically relates to a double-shaft automatic tapping machine. The double-shaft automatic tapping machine comprises a supporting mechanism, a transmission mechanism, a clamping mechanism, an electric mechanism, a tapping mechanism and a control mechanism; the electric mechanism comprise a motor and a motor gear connected with the motor; the motor is controlled by the control mechanism to alternately work by rotating positively and negatively; the transmission mechanism comprises a first main shaft and a second main shaft, a first transmission gear and a second transmission gear, an upper transmission gear and a duplex gear; a mounting position of the first main shaft is higher than a mounting position of the second main shaft; a lead screw is fixedly connected to each of the upper ends of the first main shaft and the second main shaft and fixed on an upper plate through a nut and a nut seat. The double-shaft automatic tapping machine works simultaneously with double shafts and is high in efficiency; besides, the accuracy quality of a machined workpiece is ensured; furthermore, parts can be replaced conveniently, and a purpose of improving an existing electric tapping machine to enhance the performance and efficiency thereof is achieved.
Description
Technical field
The invention belongs to field of machining, be specially a kind of twin shaft automation tapping machine.
Background technology
Tapping to be screwed in by screw tap in the bottom outlet that will bore with certain moment of torsion to process internal thread.Usual tapping adopts craft or utilizes electric threading machine to carry out tapping, manual tapping machine tapping inefficiency, and owing to artificially there is deviation in operation engineering, is easy to the phenomenon causing fracture of wire, affects crudy.Now mainly adopt electric threading machine, electric threading machine be a kind ofly can be fastenedly connected screw thread to the rotating forward of the coarse thread of various small-sized and large-scale steel part, closely-pitched, nonstandard tooth distance and reversion, be in transmission connection screw thread and gas thread carry out tapping internal thread lathe, such lathe belongs to flexible tapping category, distinguishing feature to operate by folding arm, adapts to the requirement of below M42 thread tapping.
But existing electric threading machine is single shaft tapping, and adopt belt transmission or linked transmission, as Chinese patent CN101628351 " small-sized electric tapper " and Chinese patent CN103706894A " a kind of electric threading machine of improvement " although its tapping efficiency is higher than manual tapping efficiency, the more manual tapping of stability is good, but electric threading machine very flexible in use procedure, only can be used for the screwed hole processing single size, and it is unstable to the accuracy of the screwed hole of work pieces process, brakeless device in operation, security performance is not high, but perishable being not easy of the parts of electric threading machine is changed simultaneously.
The performance that current improvement tapping machine improves tapping machine has become the necessary means greatly developing industry, but does not have now good technological means to solve the problem.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of twin shaft automation tapping machine, it adopts twin shaft to work simultaneously, efficiency is high, and ensure the precision quality of processing work, and be convenient for changing parts, realize the existing electric threading machine of improvement and reach the object improving its performance and efficiency.
Take following technical scheme for realizing above-mentioned technical purpose the present invention, a kind of twin shaft automation tapping machine, comprises supporting mechanism, transmission mechanism, clamp system, motor drive mechanism, tapper mechanism and controlling organization;
Described supporting mechanism comprises support, to be positioned at above support and the lower plate of upper and lower parallel distribution and upper plate, described lower plate and upper plate by four upright supports on support;
Described clamp system position is installed on above support; Described tapper mechanism comprises two screw tap fixed covers, and two screw tap fixed covers are installed on transmission mechanism respectively;
Described motor drive mechanism is comprised motor and is connected to the motor gear of motor by motor reel bearing and motor connecting plate lining;
Described transmission mechanism comprises and is installed on the first main shaft and the second main shaft and the first travelling gear and the second travelling gear between upper plate and lower plate, is installed on duplicate gear and the upper transfer gear of upper plate; Described first main shaft and the second main shaft upper end are all fixedly connected with screw mandrel, described screw mandrel is fixed on upper plate by nut and nut seat, wherein, the middle part of the first main shaft is provided with the first mainshaft gear, first mainshaft gear is in transmission connection in the first travelling gear, first travelling gear is in transmission connection in upper transfer gear, and travelling gear is installed on upper plate; The middle part of the second main shaft is provided with the second mainshaft gear, and the second mainshaft gear is in transmission connection in the second travelling gear, and the second travelling gear is in transmission connection in duplicate gear; Described duplicate gear is fixed between motor and upper plate, and be in transmission connection motor gear and upper transfer gear respectively;
Described controlling organization adopts PLC programme-control motor to carry out rotating alternation, comprises proximity switch; Described proximity switch has multiple, is installed on the side of the first main shaft and the second main shaft respectively, and proximity switch lays respectively at two extreme positions of the first mainshaft gear and the operation of the second mainshaft gear.
Wherein, described duplicate gear is installed on upper plate by pinion stand and bearing.
Wherein, described first travelling gear is in transmission connection in upper transfer gear by clutch shaft bearing; Second travelling gear is connected to duplicate gear by the second bearing-transmission, and the installation site of the first main shaft is higher than the installation site of the second main shaft.
Wherein, also comprise arrestment mechanism, described arrestment mechanism is installed on lower plate, comprise braked wheel, texolite, braking fixed block and oil cylinder, described texolite, braking fixed block and oil cylinder are fixed together successively by screw, and when arrestment mechanism is in on-position, texolite is close to braked wheel; Described braked wheel is individually fixed in the bottom of the first travelling gear and the second travelling gear.
Wherein, described braked wheel is fixed in lower plate by bearing and bearing mounting base.
Wherein, described clamp system comprise the middle part being fixed on support reference seat, be fixed on the fixing v block on reference seat both sides and correspond respectively to two movable v blocks of two fixing v blocks; One end that described movable v block is positioned at reference seat is fixed with material blocking block and both sides are fixed with upper limit position block and lower position block, and the other end is connected oil cylinder by oil cylinder fixing base with oil cylinder connecting plate; Oil cylinder turnover screw is housed under described oil cylinder.
Wherein, the lower end of described movable v block is fixedly connected with pushing block connecting plate and supporting plate axle; Described supporting plate axle is connected with supporting plate and regulating block.
Wherein, described motor gear is fixed on upper plate by motor positioning sleeve and bearing.
Wherein, described transmission is gear drive.
Wherein, described riding is arranged, and inclination angle is 22 degree.
Beneficial effect of the present invention
1. this tapping machine adopts twin shaft to work simultaneously, and replace single shaft tapping machine of the prior art, efficiency is high;
2. conventional tapping machine adopts vertical structure, feeding or by cylinder pusher manually, support and the horizontal line of tapping machine be that 22 degree of angles make tapping machine overall to be inclined structure, to reach and utilize the automatically feed object of gravity in the present invention, reduce labour, economize energy;
3. conventional tapping machine adopts belt transmission or chain gear transmission, and tapping machine of the present invention all adopts gear drive, gear speed change, utilizing drive to commutate makes twin shaft work alternatively up and down, and alleviate live load, transmitting torque is large, compact conformation, at the bottom of fault rate, maintenance is convenient;
4. brake apparatus introduced by tapping machine of the present invention, and put in place skidding, makes commutation steadily namely protect motor and turn improve efficiency; Also achieve fault automatic stopping, can not damage equipment;
5. conventional tapping machine adopts scroll chuck clamping, more loaded down with trivial details, and efficiency is low, and the clamping device of tapping machine of the present invention adopts hydraulic jack, and v block clamps, supporting plate, holder bar clamping, and lifting workpiece facilitates reliable and stable;
6. tapping casing of the present invention replaces with axial filament bar, nut and the screw tap that matches of pitch with it, realizes the object of the workpiece of the different pitch of processing;
7. adopt PLC to control, realize Full-automatic-feed, Automatic-clamping, self-tapping, automatic discharging, realize the object of the whole-course automation of tapping machine.
Accompanying drawing explanation
The side view of a kind of twin shaft automation of Fig. 1 tapping machine;
The front view of a kind of twin shaft automation of Fig. 2 tapping machine;
The arrestment mechanism schematic diagram of a kind of twin shaft automation of Fig. 3 tapping machine;
The clamp system front view of a kind of twin shaft automation of Fig. 4 tapping machine;
The clamp system top view of a kind of twin shaft automation of Fig. 5 tapping machine
The motor scheme of installation of a kind of twin shaft automation of Fig. 6 tapping machine;
The transmission mechanism transmission schematic diagram of a kind of twin shaft automation of Fig. 7 tapping machine;
1 supporting mechanism in figure, 11 supports, 12 lower plates, 13 upper plates, 14 columns, 2 clamp systems, 21 reference seat, 22 fixing v blocks, 23 movable v blocks, 24 material blocking blocks, 25 oil cylinder fixing bases, 26 oil cylinder connecting plates, 27 oil cylinder B, 28 upper limit position blocks, 29 lower position blocks, 210 pushing block connecting plates, 211 supporting plate axles, 212 supporting plates, 213 regulating blocks, 214 oil cylinder turnover screws, 215 pushing blocks, 216 proximity switch induction magnetic stripes, 3 motor drive mechanisms, 31 motor, 32 motor gears, 33 proximity switches, 34 travel switches, 35 motor reel bearings, 36 motor connecting plate linings, 41 first main shafts, 42 second main shafts, 43 first travelling gears, 44 second travelling gears, 45 upper transfer gear, 46 duplicate gears, 47 first mainshaft gears, 48 second mainshaft gears, 49 pinion stands, 50 braked wheels, 51 texolites, 52 braking fixed blocks, 53 brake cylinders, 54 oil cylinder B27,
In Fig. 7, the direction of arrow represents the rotation direction of gear or gear shaft.
Detailed description of the invention
In order to explain technical scheme of the present invention better, be described in detail below in conjunction with drawings and Examples.
Embodiment:
A kind of twin shaft automation tapping machine, comprises supporting mechanism 1, transmission mechanism, clamp system 2, motor drive mechanism 3, tapper mechanism and controlling organization;
Described supporting mechanism 1 comprises support 11, to be positioned at above support 11 and the lower plate 12 of upper and lower parallel distribution and upper plate 13, and described lower plate 12 is supported on support 11 with upper plate 13 by four columns 14; Supporting mechanism 1 supports whole device, and lower plate 12 and upper plate 13 are fixed wtih transmission mechanism, tapper mechanism, and upper plate 13 is fixed motor structure 3 and controlling organization above;
Described clamp system 2 is installed on above support 11, comprises the reference seat 21 being positioned at support centre position, the fixing v block 22 being fixed on reference seat 21 both sides and corresponds respectively to two movable v blocks 23 of two fixing v blocks 22; Described reference seat 21 is for positioning clamp system 2, and the fixing v block 22 on reference seat 21 both sides carries out the fixing of side for treating processing parts; Described movable v block 23 one end is connected oil cylinder by oil cylinder fixing base 25 with oil cylinder connecting plate 26, under the control of controlling organization, the movable v block 23 of oil cylinder pushing moves to fixing v block 22, and the V-type clip slot that fixing v block 22 and movable v block 23 are formed realizes the clamping to material, and when making to clamp material, the active force of the clamping of four direction received by material, can avoid the boring landing when receiving External Force Acting; The other end of movable v block 23 is fixed with material blocking block 24, and the dual-side of movable v block 23 is fixed with respectively upper limit position block 28 and lower position block 29, material blocking block 24, upper limit position block 28 and lower position block 29 acting in conjunction are for stopping material, prevent falling of material, also realize the accurate location to material; Movable v block 23 upper end is fixed with proximity switch induction magnetic stripe 216, and proximity switch induction magnetic stripe 216 can detect the close of material, and under the effect of controlling organization, cylinder efficient promotion activity v block 23 slides to fixing v block 22, and then clamping material; Movable v block 23 lower end is fixedly connected with pushing block connecting plate 210 and supporting plate axle 211, and described pushing block connecting plate 210 connects pushing block 215; Described supporting plate axle 211 is connected with supporting plate 212 and regulating block 213; When skidding off for not realizing automatically slipping at material, manually carry out adding and taking out material; Oil cylinder turnover screw 214 is housed under described oil cylinder.
Described controlling organization adopts PLC programme-control, comprise proximity switch 33, described proximity switch has four, be installed on the side of the first main shaft 41 and the second main shaft 42 respectively, and proximity switch 33 lays respectively at two extreme positions and the travel switch 34 of the first mainshaft gear 47 and the operation of the second mainshaft gear 48, and described proximity switch 33 is installed on the both sides of lower plate 12; Also comprise travel switch 34, described travel switch 34 is positioned at above upper plate 13; Range ability and the direction of screw mandrel is controlled under the control of PLC program.
Described motor drive mechanism 3 comprises motor 31 and the motor gear 32 being connected motor 31, and described motor 31 carries out rotating alternation by controlling organization, and motor 31 alternation realizes alternately forward and reverse rotation of motor gear 32; Described motor 31 is connected to motor gear 32 by motor reel bearing 35 and motor connecting plate lining 36;
Described transmission mechanism comprises and is installed on the first main shaft 41 and the second main shaft 42, first travelling gear 43 and the second travelling gear 44 between upper plate 13 and lower plate 12, be installed on the upper transfer gear 45 on upper plate 13, and be installed on the duplicate gear 46 of upper plate 13 by pinion stand 49 and bearing; The middle part that the middle part of described first main shaft 41 is provided with the first mainshaft gear 47, second main shaft 42 is provided with the second mainshaft gear 48; Described first mainshaft gear 47 is in transmission connection in the first travelling gear 43, and described first travelling gear 43 is in transmission connection in upper transfer gear 45 by clutch shaft bearing; Described second mainshaft gear 48 is in transmission connection in the second travelling gear 44, and described second travelling gear 44 is connected to duplicate gear 46 by the second bearing-transmission; Described duplicate gear 46 is in transmission connection motor gear 32 and upper transfer gear 45 respectively; The installation site of above-mentioned first main shaft 41 is higher than the installation site of the second main shaft 42, and the first main shaft 41 and the second main shaft 42 upper end are all fixedly connected with screw mandrel, and described screw mandrel is fixed on upper plate 13 by nut and nut seat; Effect between screw mandrel and nut realizes the operation up and down of the first main shaft 41 and the second main shaft 42;
Described tapper mechanism comprises two screw tap fixed covers, and two screw tap fixed covers are installed on the bottom of the first main shaft 41 and the second main shaft 41 respectively;
When motor gear 32 rotates forward, upper transfer gear 45 rotates forward, and then drives the first travelling gear 43 to rotate forward, and the first main shaft 41 drives the first mainshaft gear 47 to rotate backward, and the first main shaft 41 is up, and screw tap does not work; Duplicate gear 46 rotates backward drive second travelling gear 44 and rotates backward, and the second 42, main shaft drives the second mainshaft gear 48 to rotate forward; Second main shaft 42 is descending, the screw tap work that the second main shaft 42 is installed;
When motor gear 32 rotates backward, upper transfer gear 45 rotates backward drive first travelling gear 43 and rotates backward, and the first 41, main shaft drives the first mainshaft gear 47 to rotate forward, and the first main shaft 41 is descending, screw tap work; Duplicate gear 46 rotates forward drive second travelling gear 44 and rotates forward, and the second 42, main shaft drives the second mainshaft gear 48 to rotate backward; Second main shaft 42 is up, and screw tap does not work.
In order to realize can stop in time after workpiece skilled worker at twin shaft automatic tapping machine, a kind of twin shaft automatic tapping machine of the present invention also comprises arrestment mechanism, described arrestment mechanism is installed in lower plate 12, comprise braked wheel 50, texolite 51, braking fixed block 52, brake cylinder 53 and oil cylinder 27, described texolite 51, braking fixed block 52 are fixed together by screw successively with oil cylinder 27, and when arrestment mechanism is in on-position, texolite 51 is close to braked wheel 50; Described braked wheel 50 is individually fixed in the bottom of the first travelling gear 43 and the second travelling gear 44, and is fixed in lower plate 12 by bearing and bearing mounting base;
When the complete material of spindle processing, the travelling gear of main shaft all runs to the extreme position of its stroke, the proximity switch 33 being positioned at main-shaft side edge detects the close of mainshaft gear, and then controlling organization control brake cylinder 53 promotion braking fixed block 52 moves to braked wheel 50, in the process that braking fixed block 52 runs, texolite 51 also moves closer to braked wheel 50 under it drives, last texolite 50 props up the rotation that braked wheel 50 stops braked wheel 50, and then realizes main shaft and stop operating.Arrestment mechanism of the present invention realizes putting in place skidding, makes commutation steadily namely protect motor and turn improves efficiency; Also achieve fault automatic stopping, can not damage equipment;
In order to realize automatic blanking, described support 11 is obliquely installed, and inclination angle is 22 degree.Material can automatically fall into clamp system 2 under the effect of self gravitation, and then completes processing, also can fall into material collection frame in the effect of self gravitation after machining.
The course of work:
Start tapping machine, motor 31 drive motor gear 32 rotates, because motor gear 32 is in transmission connection in duplicate gear 46, motor gear 32 and duplicate gear 46 rotate backward, duplicate gear 46 is in transmission connection in upper transfer gear 45 and duplicate gear 46 and upper transfer gear 45 rotate backward, and the first main shaft 41 and the second main shaft 41 rotate respectively under the drive of duplicate gear 46 and upper transfer gear 45, therefore the first main shaft 41 and the second main shaft 41 rotate backward, and screw tap is all installed in the below of the first main shaft 41 and the second main shaft 41, the top of the first main shaft 41 and the second main shaft 41 is provided with screw mandrel, screw mandrel with install tear the effect of rotten nut under realize double-axis reverse and rotate up and down and carry out tapping, and proximity switch 33 is installed in lower plate 12, be provided with on clamping device proximity switch induction magnetic stripe 216, realize the blanking of safety and precise, and feeding procedure is because support 11 is obliquely installed, angle of inclination is 22 degree, therefore can realize the Action of Gravity Field automatic blanking of material at self, described here rotating backward is for the rotation direction of motor gear 32.
And control device adopts PLC programme-control, control motor 31 and rotate forward reversion work, through duplicate gear 46, first main shaft 41 is rotated forward, second main shaft 41 rotates backward, and arrange arrestment mechanism at material once completion of processing, control program then can control brake cylinder 53 and braking fixed block 52 works, and promotes texolite 51 and exerts a force to braked wheel 50, and then realizes stopping travelling gear rotating.
Should be understood that, above-mentioned detailed description of the invention of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (10)
1. a twin shaft automation tapping machine, comprises supporting mechanism, transmission mechanism, clamp system, motor drive mechanism, tapper mechanism and controlling organization; Described supporting mechanism comprises support, to be positioned at above support and the lower plate of upper and lower parallel distribution and upper plate, described lower plate and upper plate by four upright supports on support; Described clamp system position is installed on above support; Described tapper mechanism comprises two screw tap fixed covers, and two screw tap fixed covers are installed on transmission mechanism respectively; Described motor drive mechanism is comprised motor and is connected to the motor gear of motor by motor reel bearing and motor connecting plate lining; It is characterized in that, described transmission mechanism comprises and is installed on the first main shaft and the second main shaft and the first travelling gear and the second travelling gear between upper plate and lower plate, is installed on duplicate gear and the upper transfer gear of upper plate; Described first main shaft and the second main shaft upper end are all fixedly connected with screw mandrel, described screw mandrel is fixed on upper plate by nut and nut seat, wherein, the middle part of the first main shaft is provided with the first mainshaft gear, first mainshaft gear is in transmission connection in the first travelling gear, first travelling gear is in transmission connection in upper transfer gear, and travelling gear is installed on upper plate; The middle part of the second main shaft is provided with the second mainshaft gear, and the second mainshaft gear is in transmission connection in the second travelling gear, and the second travelling gear is in transmission connection in duplicate gear; Described duplicate gear is fixed between motor and upper plate, and be in transmission connection motor gear and upper transfer gear respectively;
Described controlling organization adopts PLC programme-control motor to carry out rotating alternation, comprises proximity switch; Described proximity switch has multiple, is installed on the side of the first main shaft and the second main shaft respectively, and proximity switch lays respectively at two extreme positions of the first mainshaft gear and the operation of the second mainshaft gear.
2. a kind of twin shaft automation tapping machine according to claim 1, is characterized in that: described duplicate gear is installed on upper plate by pinion stand and bearing.
3. a kind of twin shaft automation tapping machine according to claim 1, is characterized in that: described first travelling gear is in transmission connection in upper transfer gear by clutch shaft bearing; Second travelling gear is connected to duplicate gear by the second bearing-transmission, and the installation site of the first main shaft is higher than the installation site of the second main shaft.
4. a kind of twin shaft automation tapping machine according to claim 1, it is characterized in that: also comprise arrestment mechanism, described arrestment mechanism is installed on lower plate, comprise braked wheel, texolite, braking fixed block and oil cylinder, described texolite, braking fixed block and oil cylinder are fixed together successively by screw, and when arrestment mechanism is in on-position, texolite is close to braked wheel; Described braked wheel is individually fixed in the bottom of the first travelling gear and the second travelling gear.
5. a kind of twin shaft automation tapping machine according to claim 4, is characterized in that: described braked wheel is fixed in lower plate by bearing and bearing mounting base.
6. a kind of twin shaft automation tapping machine according to claim 1, is characterized in that: described clamp system comprise the middle part being fixed on support reference seat, be fixed on the fixing v block on reference seat both sides and correspond respectively to two movable v blocks of two fixing v blocks; One end that described movable v block is positioned at reference seat is fixed with material blocking block and both sides are fixed with upper limit position block and lower position block, and the other end is connected oil cylinder by oil cylinder fixing base with oil cylinder connecting plate; Oil cylinder turnover screw is housed under described oil cylinder.
7. a kind of twin shaft automation tapping machine according to claim 1, is characterized in that: the lower end of described movable v block is fixedly connected with pushing block connecting plate and supporting plate axle; Described supporting plate axle is connected with supporting plate and regulating block.
8. a kind of twin shaft automation tapping machine according to claim 1, is characterized in that: described motor gear is fixed on upper plate by motor positioning sleeve and bearing.
9. a kind of twin shaft automation tapping machine according to claim 1, is characterized in that: described transmission is gear drive.
10. a kind of twin shaft automation tapping machine according to claim 1, is characterized in that: described riding is arranged, and inclination angle is 22 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510799963.7A CN105234505A (en) | 2015-11-19 | 2015-11-19 | Double-shaft automatic tapping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510799963.7A CN105234505A (en) | 2015-11-19 | 2015-11-19 | Double-shaft automatic tapping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105234505A true CN105234505A (en) | 2016-01-13 |
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ID=55032461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510799963.7A Pending CN105234505A (en) | 2015-11-19 | 2015-11-19 | Double-shaft automatic tapping machine |
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| Country | Link |
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| CN (1) | CN105234505A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108372418A (en) * | 2018-04-10 | 2018-08-07 | 拖（洛阳）开创装备科技有限公司 | A kind of overturning swing mechanism for machining workpiece |
| CN108941798A (en) * | 2018-09-12 | 2018-12-07 | 湖北科技学院 | A kind of chasing bar of the ring flange with multiple radial screw bores |
| CN114393407A (en) * | 2022-03-04 | 2022-04-26 | 龙口市亨嘉智能装备有限公司 | Multi-shaft cutter machining equipment for holes |
-
2015
- 2015-11-19 CN CN201510799963.7A patent/CN105234505A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108372418A (en) * | 2018-04-10 | 2018-08-07 | 拖（洛阳）开创装备科技有限公司 | A kind of overturning swing mechanism for machining workpiece |
| CN108941798A (en) * | 2018-09-12 | 2018-12-07 | 湖北科技学院 | A kind of chasing bar of the ring flange with multiple radial screw bores |
| CN114393407A (en) * | 2022-03-04 | 2022-04-26 | 龙口市亨嘉智能装备有限公司 | Multi-shaft cutter machining equipment for holes |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |
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| WD01 | Invention patent application deemed withdrawn after publication |