CN207026994U - A kind of fastener process equipment based on automatic technology design - Google Patents
A kind of fastener process equipment based on automatic technology design Download PDFInfo
- Publication number
- CN207026994U CN207026994U CN201721029933.9U CN201721029933U CN207026994U CN 207026994 U CN207026994 U CN 207026994U CN 201721029933 U CN201721029933 U CN 201721029933U CN 207026994 U CN207026994 U CN 207026994U
- Authority
- CN
- China
- Prior art keywords
- process equipment
- main engine
- engine bed
- cutter
- technology design
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Automatic Assembly (AREA)
Abstract
The utility model discloses a kind of fastener process equipment based on automatic technology design,Including process equipment body and the control circuit for being controlled to process equipment body,The process equipment body includes main engine bed,Feed system and the system of processing being engaged with feed system are provided with main engine bed,The system of processing includes cutter apparatus and platen system,The cutter apparatus and platen system all support by installation of main engine bed,And platen system is arranged on the top of cutter apparatus,The infrared sensor of observation cutter apparatus operation is provided with main engine bed,And infrared sensor is connected with control circuit,Prior art process equipment is solved when being processed,The defect ware rate of finished product is too high,Or machining accuracy it is bad the reason for frequency it is existing,Cause the weak point that processing cost is higher,With reference to infrared sensor video surveillance technology,It is processed the machining accuracy management and control of equipment,Improve machining accuracy,Reduce defect ware rate,So as to reduce processing cost.
Description
Technical field
The utility model is related to the fields such as fastener technology, specifically, be it is a kind of based on automatic technology design it is tight
Firmware process equipment.
Background technology
Fastener, it is to be fastenedly connected with and apply extremely wide a kind of machine components.Fastener, it is wide using industry
It is general, including the energy, electronics, electrical equipment, machinery, chemical industry, metallurgy, mould, hydraulic pressure etc. industry, various machineries, equipment, vehicle,
Above ship, railway, bridge, building, structure, instrument, instrument, chemical industry, instrument and articles for use etc., it can be seen that miscellaneous
Fastener, it is most widely used mechanical basic part.Its feature is that description is various, and performance purposes is different, and standard
Change, seriation, unitized degree are also high.Therefore, also that a kind of fastener of obtained official standard called standard is tight by someone
Firmware, or referred to as standard component.
Machining refers to the process of be changed the appearance and size or performance of workpiece by a kind of plant equipment.By adding
Difference in work mode can be divided into machining and pressure processing.
The production process of machine refers to all processes that product is made from raw material (or semi-finished product).For production of machinery
Transport and preservation including raw material, the preparation of production, the manufacture of blank, the processing and heat treatment of part, the assembling of product and
Debugging, the content such as paint and packaging.The content of production process is quite varied, the principle and method of modern enterprise system analysis engineering
Tissue production and Instructing manufacture, regard production process as a production system with input and output.
In process of production, every shape, size, position and property etc. for changing production object, become finished product or
The process of person's semi-finished product is referred to as technical process.It is the major part of production process.Technical process can be divided into again casting, forging,
The technical process such as punching press, welding, machining, assembling, manufacturing technology process generally refer to the mechanical processing technique of part
The summation of the assembling technology procedure of process and machine, other processes then be referred to as supporting process, such as transport, keeping, power supply,
Maintenance of equipment etc..Technical process is made up of one or several tactic processes again, and a process is by there is several
Work step forms.
Process is to form the elementary cell of machining work process.So-called process refers to (or one group) worker,
On a machine tool (or a job site), that a part of work being continuously finished to same workpiece (or simultaneously to several workpiece)
Skill process.One process of composition is mainly characterized by not changing processing object, equipment and operator, and the content of process is to connect
Continuous completion.
Work step is under conditions of finished surface is constant, machining tool is constant, cutting data is constant.
Feed is called impulse stroke, is that machining tool processes the work step once completed on finished surface.
Formulate machining work process, it must be determined that the workpiece will pass through several procedures and the priority of process progress is suitable
Sequence, only list the simple technical process of master operation title and its processing sequence, referred to as process route.
Drafting for process route is the total arrangement for formulating technical process, and main task is to select the processing side on each surface
Method, determines the processing sequence on each surface, and process number purpose is how many etc. in whole technical process.Process route, which is drafted, to abide by
Follow certain principle.
Prior art particularly when carrying out parts opening cutting processing, be all often by processing person by rule of thumb or eye
Eyeball, which is manually observed, determines whether the part of processing is processed in place, because the experience of each processing person is different, or the original such as eyesight error
Cause, it is the defect ware rate for causing finished product is too high, or machining accuracy is bad the reason for frequency it is existing, cause processing cost higher.
Utility model content
The purpose of this utility model is to provide a kind of fastener process equipment based on automatic technology design, solved existing
There is the fastener process equipment of technology when being processed, because the experience of each processing person is different, or the reason such as eyesight error,
The reason for defect ware rate for causing finished product is too high, or machining accuracy is bad, is frequently existing, causes the weak point that processing cost is higher,
With reference to infrared sensor video surveillance technology, the machining accuracy management and control of equipment is processed, improves machining accuracy, reduces defect ware
Rate, so as to reduce processing cost.
The utility model is achieved through the following technical solutions：A kind of fastener processing based on automatic technology design is set
It is standby, including process equipment body and the control circuit for being controlled to process equipment body, the process equipment body bag
Main engine bed is included, feed system and the system of processing being engaged with feed system, the system of processing bag are provided with main engine bed
Cutter apparatus and platen system are included, the cutter apparatus and platen system are all supported by installation of main engine bed, and platen system is set
Put the infrared sensor that observation cutter apparatus operation in the top of cutter apparatus, is provided with main engine bed, and infrared sensor
It is connected with control circuit.
Further is that the utility model is better achieved, especially using following setting structures：The platen system includes
Pressing plate, pressure roller, piston rod and adjusting nut, the top of main engine bed is provided with the mounting bracket for installing piston rod, piston rod
One end be arranged on by adjusting nut on mounting bracket, the other end of piston rod connection pressing plate, pressure roller matches somebody with somebody combined pressure on main engine bed
Plate is arranged on the lower section of piston rod, and infrared sensor is arranged on the lower section of pressure roller.
Further is that the utility model is better achieved, especially using following setting structures：In the pressing plate and piston
The junction of bar is provided with the pressure sensor for detecting piston rod pressure, and pressure sensor is connected with control circuit.
Further is that the utility model is better achieved, especially using following setting structures：On the cutter apparatus
It is provided with the range sensor of the workpiece working depth to be added when carrying out work pieces process to be added, and range sensor and control circuit
It is connected.
Further is that the utility model is better achieved, especially using following setting structures：The cutter apparatus includes
The cutter connecting shaft on main engine bed and below pressure roller is arranged on, cutter is provided with cutter connecting shaft, and cutter is placed in
In the hollow open of pressing plate bottom.
Further is that the utility model is better achieved, especially using following setting structures：The feed system includes
The rolling clamp being attached on main engine bed, and after the discharging opening of rolling clamp and the working position of cutter apparatus are matched somebody with somebody, in rotating clamp
Holding tank is provided with above tool, and the discharging opening of holding tank is placed in above the swivelling chute of rolling clamp.
Further is that the utility model is better achieved, especially using following setting structures：The control circuit includes
DSP Processor, A/D converter, A/D circuits, human-computer interaction interface, D/A converter, PLC and process equipment body
Braking circuit, the infrared sensor connect A/D converter, A/D converter connection DSP Processor, pressure sensor and distance
Sensor is all connected with A/D circuits, and A/D circuits connection DSP Processor, DSP Processor connects D/A converter and man-machine respectively
Interactive interface, D/A converter connection PLC, PLC connection braking circuit.
Further is that the utility model is better achieved, especially using following setting structures：The human-computer interaction interface
Using the human-computer interaction interface of touch screen structure.
The utility model compared with prior art, has advantages below and beneficial effect：
The utility model solves the fastener process equipment of prior art when being processed, due to the warp of each processing person
Test difference, or the reason such as eyesight error, it is the defect ware rate for causing finished product is too high, or machining accuracy is bad the reason for frequency it is existing, lead
The higher weak point of processing cost is caused, with reference to infrared sensor video surveillance technology, is processed the machining accuracy pipe of equipment
Control, machining accuracy is improved, defect ware rate is reduced, so as to reduce processing cost.
The utility model combination infrared sensor, range sensor and pressure sensor carry out data acquisition, so as to be to carry
High manufacturing accuracy provides effective comparison data, and then the regulation of precision is processed using control circuit.
The utility model combination PLC technology carries out the control management of braking circuit, can avoid logic error and influence each
The normal control of controlling brancher.
Brief description of the drawings
Fig. 1 is process equipment body construction schematic diagram described in the utility model.
Fig. 2 is control circuit theory diagram described in the utility model.
Wherein, 1- holding tanks, 2- workpiece to be added, 3- rolling clamps, 4- finished parts, 5- piston rods, 6- adjusting nuts, 7- pressures
Roller, 8- infrared sensors, 9- pressing plates, 10- cutter connecting shafts, 11- cutters, 12- main engine beds, 13- chutes.
Embodiment
The utility model is described in further detail with reference to embodiment, but embodiment of the present utility model is not
It is limited to this.
It is worth noting that, in practical application of the present utility model, software program, but Shen are inevitably applied to
Ask someone it is hereby stated that, the software program that the technical scheme is applied in the specific implementation is all prior art, in this application, no
It is related to the change and protection of software program, simply to realize the protection of hardware structure that goal of the invention designs.
Embodiment 1：
A kind of fastener process equipment based on automatic technology design, the fastener process equipment for solving prior art exist
When being processed, because the experience of each processing person is different, or the reason such as eyesight error, the defect ware rate mistake of finished product will be caused
Height, or frequency is existing the reason for machining accuracy is bad, causes the weak point that processing cost is higher, with reference to infrared sensor video surveillance
Technology, the machining accuracy management and control of equipment is processed, improves machining accuracy, reduce defect ware rate, so as to reduce processing cost, such as
Shown in Fig. 1, Fig. 2, especially using following setting structures：Including process equipment body and for being controlled to process equipment body
Control circuit, the process equipment body includes main engine bed 12, be provided with main engine bed 12 feed system and with feeding system
The system of processing that system is engaged, the system of processing include cutter apparatus and platen system, the cutter apparatus and platen system
All supported with main engine bed 12 for installation, and platen system is arranged on the top of cutter apparatus, and observation is provided with main engine bed 12
The infrared sensor 8 of cutter apparatus operation, and infrared sensor 8 is connected with control circuit.
The process equipment body is used to 2 carry out fluting processing to machined part, and adding, utilization of hour control circuit is automatic
That changes is controlled to working depth and machining accuracy, main engine bed 12 is provided with process equipment body, on main engine bed 12
Feed system and system of processing are respectively arranged with, workpiece 2 to be added is transported in system of processing and is processed by wherein feed system,
System of processing 2 carries out fluting cutting to machined part, and when being processed, the infrared sensor 8 being arranged on main engine bed 12 is right
The data such as the processing change in displacement of workpiece to be added are acquired, and are then transported in control circuit, and control circuit is according to prefabricated
Control strategy and Processing Strategies, which are contrasted, then to be changed, so as to improve machining accuracy.
Embodiment 2：
The present embodiment is further optimized on the basis of above-described embodiment, further new for this practicality is better achieved
Type, as shown in Figure 1 and Figure 2, especially using following setting structures：The platen system includes pressing plate 9, pressure roller 7, piston rod 5 and adjusted
Nut 6 is saved, the mounting bracket for installing piston rod 5 is provided with the top of main engine bed 12, one end of piston rod 5 is by adjusting spiral shell
Mother 6 is arranged on mounting bracket, and the other end connection pressing plate 9 of piston rod 5, pressure roller 7 coordinates pressing plate 9 to be arranged on and lived on main engine bed 12
The lower section of stopper rod 5, and infrared sensor 8 is arranged on the lower section of pressure roller 7.In design in use, being not provided with main engine bed 12
For installing the mounting bracket of piston rod 5, coordinate adjusting nut 6 to pacify bundle un in piston rod 5 and hang on mounting bracket, and in piston rod 5
Other end installation pressing plate 9, pressure that can be with regulating piston bar 5 to pressing plate 9 using adjusting nut 6, while below piston rod 5
The pressure roller 7 being engaged with pressing plate 9 is installed, to be added what is be processed under the mating reaction of piston rod 5, pressing plate 9 and pressure roller 7
Workpiece 2 is pressurizeed then carries out fluting cutting using cutter apparatus, while infrared sensor 8 is mounted under pressure roller 7
So that the machining state based on part of the infrared technology to processing carries out real-time collecting on the main engine bed 12 of side, for control
Circuit provides comparison data, and the regulation of precision is then processed according to prefabricated Processing Strategies and regulation strategy, obtains precision
Good finished parts 4, defect ware rate is reduced, and finished parts 4 are transported to quality inspection by being arranged on the chute below cutter apparatus
Duan Jinhang quality inspections.
Embodiment 3：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1 and Figure 2, is further
The utility model is better achieved, especially using following setting structures：It is provided with the junction of the pressing plate 9 and piston rod 5
For detecting the pressure sensor of piston rod pressure, and pressure sensor is connected with control circuit, sets pressure sensor can
With the pressure value of the monitoring pressing plate 9 of quantification, spiral shell is then adjusted according to the manual utilization of required precision to obtain real time data
Female 6 pairs of piston rods 5 carry out pressure regulation, while the regulation of the progress cutter rotating speed automated, and then improve machining accuracy, effectively
Ensure product quality.
Embodiment 4：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1 and Figure 2, is further
The utility model is better achieved, especially using following setting structures：It is provided with the cutter apparatus to be processed in progress
The range sensor of the working depth of workpiece 2 to be added when part 2 is processed, and range sensor is connected with control circuit, Distance-sensing
The setting of device can timely judge the distance between workpiece 2 and cutter apparatus to be added, so as to adjust the rotating speed of cutter apparatus, make
Obtain has a suitable transition speed when carrying out fluting processing, so as to avoid the fluting position of finished parts from too many hair being present
Thorn, influence product use.
Embodiment 5：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1 and Figure 2, is further
The utility model is better achieved, especially using following setting structures：The cutter apparatus include be arranged on main engine bed 12 and
Cutter connecting shaft 10 positioned at the lower section of pressure roller 7, is provided with cutter 11, and cutter 11 is placed under pressing plate 9 in cutter connecting shaft 10
In the hollow open in portion, in processing, workpiece 2 to be added is pressed on the cutter 11 of rotation using pressing plate 9 and feed system, from
And realize fluting processing.
Embodiment 6：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1 and Figure 2, is further
The utility model is better achieved, especially using following setting structures：The feed system includes being attached on main engine bed 12
Rolling clamp 3, and after the discharging opening of rolling clamp and the working position of cutter apparatus are matched somebody with somebody, be provided with the top of rolling clamp 3
Holding tank 1, and the discharging opening of holding tank 1 is placed in above the swivelling chute of rolling clamp 3, it is when in use, to be processed in holding tank 1
Part 2 is loaded on rolling clamp 3, and rolling clamp 3, which grips workpiece 2 to be added and rotated, to be transported at the cutter 11 of rotation, is matched somebody with somebody simultaneously
2 position to be slotted of workpiece to be added is pressed on the cutter 11 of rotation by combined pressure plate 9,2 is opened to machined part using cutter 11
Groove processing.
Embodiment 7：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1 and Figure 2, is further
The utility model is better achieved, especially using following setting structures：The control circuit includes DSP Processor, A/D is changed
Device, A/D circuits, human-computer interaction interface, D/A converter, the braking circuit of PLC and process equipment body, it is described infrared
Sensor 8 connects A/D converter, A/D converter connection DSP Processor, pressure sensor and range sensor all with A/D circuits
It is connected, A/D circuits connection DSP Processor, DSP Processor connects D/A converter and human-computer interaction interface, D/A conversions respectively
Device connects PLC, PLC connection braking circuit.
It is in data signal that the data that the infrared sensor is gathered when in use, which will utilize A/D converter conversion, then
New control instruction is formed according to prefabricated work (processing, regulation etc.) strategy in DSP Processor, then changed using D/A
The control instruction conversion of data signal is in analog signal by device, then single using PLC control corresponding to braking circuit
Member is controlled, and the braking circuit includes the various control units such as cutter rotating speed, rolling clamp chucking power；Pressure sensor and
The sensor signal that range sensor is gathered carries out analog-to-digital conversion using same A/D circuits, and is transported to DSP measurement chambers
It is interior, new control instruction is then formed according to prefabricated work (processing, regulation etc.) strategy in DSP Processor, then utilized
The control instruction conversion of data signal is in analog signal by D/A converter, then corresponding to braking circuit using PLC
Control unit is controlled；Information exchange between the human-computer interaction interface main implementation technique person or user and machine
(such as parameter regulation, control strategy are implanted into).
Embodiment 8：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1 and Figure 2, is further
The utility model is better achieved, especially using following setting structures：The human-computer interaction interface uses the people of touch screen structure
Machine interactive interface.
It is described above, only it is preferred embodiment of the present utility model, any formal limit is not done to the utility model
System, every any simple modification made according to the technical essence of the utility model to above example, equivalent variations, each falls within
Within the scope of protection of the utility model.
Claims (8)
- A kind of 1. fastener process equipment based on automatic technology design, it is characterised in that：Including process equipment body and use In the control circuit being controlled to process equipment body, the process equipment body includes main engine bed (12), in main engine bed (12) feed system and the system of processing being engaged with feed system are provided with, the system of processing includes cutter apparatus and pressure Plate system, the cutter apparatus and platen system are all supported with main engine bed (12) for installation, and platen system is arranged on cutter and set Standby top, the infrared sensor (8) of observation cutter apparatus operation, and infrared sensor (8) are provided with main engine bed (12) It is connected with control circuit.
- A kind of 2. fastener process equipment based on automatic technology design according to claim 1, it is characterised in that：Institute Stating platen system includes pressing plate (9), pressure roller (7), piston rod (5) and adjusting nut (6), is provided with the top of main engine bed (12) For installing the mounting bracket of piston rod (5), one end of piston rod (5) is arranged on mounting bracket by adjusting nut (6), piston rod (5) other end connection pressing plate (9), pressure roller (7) cooperation pressing plate (9) is arranged on the lower section of piston rod (5) on main engine bed (12), And infrared sensor (8) is arranged on the lower section of pressure roller (7).
- A kind of 3. fastener process equipment based on automatic technology design according to claim 2, it is characterised in that： The junction of the pressing plate (9) and piston rod (5) is provided with the pressure sensor for detecting piston rod pressure, and pressure sensing Device is connected with control circuit.
- A kind of 4. fastener process equipment based on automatic technology design according to claim 3, it is characterised in that： The range sensor of workpiece (2) working depth to be added when carrying out workpiece (2) processing to be added is provided with the cutter apparatus, and Range sensor is connected with control circuit.
- A kind of 5. fastener process equipment based on automatic technology design according to claim 4, it is characterised in that：Institute Stating cutter apparatus includes being arranged on the cutter connecting shaft (10) on main engine bed (12) and below pressure roller (7), is connected in cutter Cutter (11) is provided with axle (10), and cutter (11) is placed in the hollow open of pressing plate (9) bottom.
- A kind of 6. fastener process equipment based on automatic technology design according to claim 5, it is characterised in that：Institute Stating feed system includes being attached to rolling clamp (3) on main engine bed (12), and the discharging opening of rolling clamp and cutter apparatus After working position is matched somebody with somebody, holding tank (1) is provided with above rolling clamp (3), and the discharging opening of holding tank (1) is placed in rotating clamp Above the swivelling chute for having (3).
- 7. a kind of fastener process equipment based on automatic technology design according to claim any one of 4-6, it is special Sign is：The control circuit includes DSP Processor, A/D converter, A/D circuits, human-computer interaction interface, D/A converter, PLC The braking circuit of controller and process equipment body, the infrared sensor (8) connect A/D converter, A/D converter connection DSP Processor, pressure sensor and range sensor are all connected with A/D circuits, A/D circuits connection DSP Processor, at DSP Reason device connects D/A converter and human-computer interaction interface, D/A converter connection PLC, PLC connection braking respectively Circuit.
- A kind of 8. fastener process equipment based on automatic technology design according to claim 7, it is characterised in that：Institute State the human-computer interaction interface that human-computer interaction interface uses touch screen structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721029933.9U CN207026994U (en) | 2017-08-17 | 2017-08-17 | A kind of fastener process equipment based on automatic technology design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721029933.9U CN207026994U (en) | 2017-08-17 | 2017-08-17 | A kind of fastener process equipment based on automatic technology design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207026994U true CN207026994U (en) | 2018-02-23 |
Family
ID=61488008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721029933.9U Expired - Fee Related CN207026994U (en) | 2017-08-17 | 2017-08-17 | A kind of fastener process equipment based on automatic technology design |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207026994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411651A (en) * | 2019-06-18 | 2019-11-05 | 重庆布莱迪仪器仪表有限公司 | Pressure acquisition system |
-
2017
- 2017-08-17 CN CN201721029933.9U patent/CN207026994U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411651A (en) * | 2019-06-18 | 2019-11-05 | 重庆布莱迪仪器仪表有限公司 | Pressure acquisition system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106425303B (en) | A kind of large thin-wall bay section processing method of casing and fixture | |
| Shi et al. | Electric hot incremental forming of low carbon steel sheet: accuracy improvement | |
| CN203527468U (en) | Novel full-automatic computer numerical control lathe manipulator | |
| CN103921158B (en) | A kind of automatic loading and unloading system based on robot | |
| CN112275981B (en) | Intelligent production system and method for free forging | |
| CN106041933A (en) | Robot polishing and grinding system and passive compliance and active compliance mixed control method | |
| CN107443124A (en) | A kind of sheet fabrication fixing device | |
| CN101644921A (en) | Improved method for designing numerical control bending of plate | |
| CN206870627U (en) | A kind of brake disc automatic detection marking device | |
| CN206104779U (en) | Automatic change forging production line control device | |
| CN106737688A (en) | A kind of collecting box pipe seat robot automatic setup system and method based on multisensor | |
| CN106271377A (en) | High locked bolts full-automatic fillet rolling machine | |
| CN207026994U (en) | A kind of fastener process equipment based on automatic technology design | |
| CN109623811A (en) | The feeding method of the automatic Robot for steamer of four-degree-of-freedom | |
| CN101367097A (en) | Reaction type angle control digital control plate bender | |
| CN116197294B (en) | Jaw body positioning method based on temperature detection matrix and skin stretching equipment | |
| CN206084288U (en) | Full -automatic fillet rolling of high lock bolt machine | |
| CN102990363B (en) | Numerical control special machine unit line for machining intake valve and exhaust valve of cylinder cover and machining method | |
| CN208467283U (en) | Multistation suitable for numerically-controlled machine tool continuously changes part processing unit (plant) | |
| Rauch et al. | A new approach for toolpath programming in Incremental Sheet Forming | |
| CN207748519U (en) | A kind of automatic error feeder | |
| CN205449274U (en) | High automation calibration of weight machine | |
| CN205732310U (en) | Round steel aligning cold bed | |
| CN208004833U (en) | A kind of efficiently automatic deep hole drilling apparatus of airplane parts | |
| CN206216157U (en) | A kind of adjustable guide wheel in stainless steel pressure pipe forming process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20200817 |