CN207007122U - Lathe cylindrical housings justify jitter detection apparatus - Google Patents
Lathe cylindrical housings justify jitter detection apparatus Download PDFInfo
- Publication number
- CN207007122U CN207007122U CN201720159792.6U CN201720159792U CN207007122U CN 207007122 U CN207007122 U CN 207007122U CN 201720159792 U CN201720159792 U CN 201720159792U CN 207007122 U CN207007122 U CN 207007122U
- Authority
- CN
- China
- Prior art keywords
- button
- support
- fixed
- lathe
- box
- 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
- Machine Tool Sensing Apparatuses (AREA)
Abstract
The utility model provides a kind of lathe cylindrical housings circle jitter detection apparatus, installation measurement support on the support bottom plate of the device, lacing wire, button box, cylinder is installed on the measurement support, tank chain, fixed sliding block, hydraulic bjuffer, the elevating lever being connected with cylinder drives line slide rail to be moved up and down along the fixed sliding block, the elevating lever lower end is installed by measuring box, measuring box is connected with cylinder with the button box, button box is connected with the controller, the Electric Appliance Cabinet top is provided with Industrial touch screen computer, the controller is connected with the Industrial touch screen computer.Beneficial effect is that the cylindrical jitter values for the cylindrical housings that the device is used to process lathe detect, product quality is fed back in time, ensure that the product quality that production line is produced accurately is monitored, find substandard product in time, improve the production efficiency of production line.
Description
Technical field
The utility model belongs to lathe workpiece detection field, and in particular to lathe cylindrical housings justify jitter detection apparatus.
Background technology
Numerically controlled lathe has become a kind of Digit Control Machine Tool that China's usage amount is maximum, coverage rate is most wide, is collection machinery, electricity
The electromechanical integrated product that the multinomial technologies such as air-liquid pressure, pneumatic, microelectronics and information are integrated, has in machine-building device
There are high accuracy, high efficiency, high automation.However, the difficulty such as permanent use, tool wear, mechanical oscillation of numerically controlled lathe
The reason for overcome, minor impact can be produced to the dimensional accuracy of institute's workpieces processing, some errors for seeming small can be right unavoidably
The following process of workpiece is produced and had a strong impact on.Cylindrical bounce is to weigh an important indicator of cylindrical housings workpiece.To lathe
The cylindrical bounce of cylindrical housings processed is detected in time, for improving production efficiency, ensures that product quality is played to pass
Important effect.Therefore, research and development are engaged with lathe, be easy to the hommization of operation housing justify jitter detection apparatus and
Detection method is particularly important, can not urgently treat.
The content of the invention
The purpose of this utility model is error this phenomenon for the roundness of external circle of lathe process cylindrical housings be present and carry
Justify jitter detection apparatus for a kind of lathe cylindrical housings, for the cylindrical jump of the cylindrical housings produced to lathe in factory
It is dynamic to be detected, and then production efficiency is improved, ensure the effect of the quality of production.
To achieve these goals, the technical solution adopted in the utility model is to provide a kind of lathe cylindrical housings circle and jumped
Motion detection device, lathe cylindrical housings circle jitter detection apparatus, the device are arranged on numerically controlled lathe, wherein：The device
Structure is that support bottom plate is fixed with the top of the numerically controlled lathe, measurement support is provided with support bottom plate, in the measurement
One end of lacing wire I is fixed on support, the other end of lacing wire I is fixed on the support bottom plate, while on the measurement support
One end of lacing wire II is fixed with, the other end of lacing wire II is fixed at the top of numerically controlled lathe, and the measurement support side is provided with gas
Cylinder, the measurement support opposite side installation tank chain, the fixed sliding block of measurement support front installation, the measurement support front
Downside is installed by hydraulic bjuffer.
The cylinder piston of the cylinder is connected with universal joint, and the universal joint is connected with elevating lever by connecting plate,
The adjustable baffle plate in position is installed, measuring box is installed in the elevating lever lower end, and the side of measuring box is provided with the elevating lever
Roller, button box is installed on the support bottom plate.
The measuring box is connected with cylinder by cable with button box, and button box passes through cable connection Electric Appliance Cabinet, electrical equipment
Installation controller inside cabinet, the Electric Appliance Cabinet top are connected with Industrial touch screen computer by netting twine and are used as host computer, form detection
System.
The beneficial effects of the utility model are：
Firstth, the large area support bottom plate of lathe cylindrical housings circle jitter detection apparatus of the present utility model, two drawings
Muscle, the structural soundness of measuring system is ensure that, avoid and caused measurement error is rocked by machinery.
Secondth, the mechanical structure inside lathe cylindrical housings circle jitter detection apparatus measuring box of the present utility model is set
Meter, ensureing roller with making the contact between roller and workpiece that there is certain pressure while the flexible contact of workpiece, it is unlikely
In causing loss of data because of skidding.
3rd, the piston position adjustment ring of lathe cylindrical housings circle jitter detection apparatus of the present utility model ensure that survey
It is out of service behind amount box arrival lower position.
4th, the design of the hydraulic bjuffer and baffle plate of lathe cylindrical housings circle jitter detection apparatus of the present utility model
Caused damping action, measuring box downstream rate is slowed down in a flash in measuring box contact housing, workpiece has been served
Protective effect.
5th, the part of data acquisition of lathe cylindrical housings circle jitter detection apparatus of the present utility model uses Ethernet
Communication modes, it ensure that the reliability of communication.
6th, the host computer operation interface of lathe cylindrical housings circle jitter detection apparatus of the present utility model has height
The characteristics of hommization, while operation interface has the record and query function of data.
7th, the detection method for justifying jitter detection apparatus using lathe cylindrical housings of the present utility model has automation
The advantages of degree is high, simple to operate, and security is good.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is lacing wire structural representation of the present utility model；
Fig. 3 is piston position adjustment ring schematic diagram of the present utility model；
Fig. 4 is hydraulic bjuffer schematic diagram of the present utility model；
Fig. 5 is measuring box of the present utility model and its internal structure schematic diagram.
In figure：
1st, numerically controlled lathe 2, support bottom plate 3, measurement support 4, lacing wire I
5th, button box 6, cylinder II 7, lacing wire 8, tank chain
9th, fixed sliding block 10, hydraulic bjuffer 11, elevating lever 12, line slide rail
13rd, baffle plate 14, measuring box 15, Electric Appliance Cabinet 16, controller
17th, Industrial touch screen computer 18, cylinder piston 19, piston position adjustment ring
20th, shell workpiece 21 to be measured, displacement transducer 22, pulse coder
23rd, flexible clutch 24, roller 25, support axle installing plate
26th, spring 27, line slideway 28, spring top board
29th, unblock button 30, descending button 31, testing button
32nd, up button 33, scram button I 34, scram button II
35th, displacement display panel 36, sliding block 37, connecting plate 38, universal joint
Embodiment
Lathe cylindrical housings of the present utility model circle jitter detection apparatus is described further below in conjunction with the accompanying drawings.
As Figure 1-5, lathe cylindrical housings circle jitter detection apparatus structure of the present utility model is that the device is set
On numerically controlled lathe 1, support bottom plate 2 is fixed with the top of the numerically controlled lathe 1, measurement support is installed on support bottom plate 2
3, one end of lacing wire I 4 is fixed on the measurement support 3, the other end of lacing wire I 4 is fixed on the support bottom plate 2, simultaneously
One end of lacing wire II 7 is fixed with the measurement support 3, the other end of lacing wire II 7 is fixed on the top of numerically controlled lathe 1, described
Measurement support 3 side is provided with cylinder 6, the measurement support 3 opposite side installation tank chain 8, the front installation of measurement support 3
Fixed sliding block 9, the front downside installation hydraulic bjuffer 10 of measurement support 3.
The cylinder piston 18 of the cylinder 6 is connected with universal joint 38, and the universal joint 38 is connected by connecting plate 37
There is elevating lever 11, the adjustable baffle plate 13 in position is installed on the elevating lever 11, measuring box 14 is installed in the lower end of elevating lever 11,
The side of measuring box 14 is provided with roller 24, and the surface of roller 24 is printed surface.Button box is installed on the support bottom plate 2
5。
The support bottom plate 2 is fixed on the top of numerically controlled lathe 1 by multiple screws, and the bottom of measurement support 3 passes through spiral shell
Silk is fixed on support bottom plate 2.
Be provided with the button box 5 unblock button 29 of interconnection, descending button 30, testing button 31, it is up by
Button 32 and scram button I 33, scram button II 34 is installed on the Electric Appliance Cabinet 15, and removes the scram button I 33 and jerk
It is band button outside button II 34, displacement display panel 35 is installed on the button box 5.
The measuring box 14 is connected with cylinder 6 by cable with button box 5, and button box 5 passes through cable connection Electric Appliance Cabinet
15, the inside of Electric Appliance Cabinet 15 installation controller 16, the top of Electric Appliance Cabinet 15 is connected with Industrial touch screen computer 17 by netting twine and is used as
Host computer, form detecting system.
Displacement transducer 21, the pulse coder 22 of interconnection are installed, the pulse is compiled inside the measuring box 14
The axle of code device 22 is connected by flexible clutch 23 with the axle of roller 24 in the measuring box 14, and the axle of the roller 24 passes through axle
Hold and be fixed in support axle installing plate 25, the support axle installing plate 25 is fixed on sliding block 36, and the sliding block 36 can be along admittedly
It is scheduled on the line slideway 27 inside measuring box to move up and down, spring top board 28 is fixed with measuring box 14, in the spring
Connected between top board 28 and the support axle installing plate 25 by spring 26.
Piston position adjustment ring 19 is fixed with the cylinder piston 18, piston position adjustment ring 19 is two semicircle knots
Structure.
Institute's displacement sensors 21 are using the high-precision contact digital sensor of Keyemce GT2 series, the controller 16
From Keyemce KV-Nano Series Controllers, institute's displacement sensors 21 pass through private cable with the displacement display panel 35
It is connected, ethernet communication, the controller 16 and the work is used between the displacement display panel 35 and the controller 16
Ethernet communication is used between industry touch screen computer 17.The operation interface of the host computer Industrial touch screen computer 17 of the detecting system is
Labview2012 software programmings based on NI companies of the U.S..
What lathe cylindrical housings circle jitter detection apparatus function of the present utility model was realized in：
As Figure 1-5, lathe cylindrical housings circle jitter detection apparatus, it includes numerically controlled lathe 1, the numerically controlled lathe
1 top is provided with support bottom plate 2, and measurement support 3 is installed on the support bottom plate 2；Lacing wire 4 is fixed on the measurement support 3
One end, the other end of lacing wire 4 is fixed on the support bottom plate 2, and one end of lacing wire 7 is fixed with the measurement support 3,
The other end of lacing wire 7 is fixed on the top of lathe 1, and two lacing wires ensure that measurement process medium-height trestle 3 will not produce and rock；The survey
The right side of amount support 3 is provided with cylinder 6, for driving measuring box 14 to move up and down；The left side installation tank chain of measurement support 3
8, for depositing the cable between measuring box 14 and button box 5；The fixed sliding block 9 of front installation of measurement support 3；The measurement
The front of support 3 downside installation hydraulic bjuffer 10；The cylinder piston 18 of the cylinder 6 is connected with universal joint 38, described universal
Joint 38 is connected with connecting plate 37, and the connecting plate 37 is connected with the elevating lever 11, and position is provided with the elevating lever 11
Measuring box 14 is installed in adjustable baffle plate 13, the lower end of elevating lever 11；The left side of measuring box 14 is provided with roller 24；The support
Button box 5 is installed on bottom plate 2.The measuring box 14 is connected with the cylinder 6 by cable with the button box 5；Electrical equipment
The inside of cabinet 15 installation controller 16；The button box 5 passes through cable connection with the controller 16；The top of Electric Appliance Cabinet 15 peace
Equipped with Industrial touch screen computer 17, the controller 16 is connected with the Industrial touch screen computer 17 by netting twine.Pass through said structure
It can be used in detecting the circle bounce of lathe cylindrical housings, produced cylindrical housings screened, ensure that product
Quality, and then ensure that being processed further for product.
The measurement support 3 is fixed on the support bottom plate 2, and the support bottom plate 2 is fixed on the top of lathe 1,
Described one end of lacing wire 4 is fixed on the measurement support 3, and the other end is fixed on the support bottom plate 2, described one end of lacing wire 7
It is fixed on the measurement support 3, the other end is fixed on the top of lathe 1.Said structure ensure that the measurement support 3
Stability, in the action process of cylinder 6 and in measurement process, system will not be produced and rocked.
The cylinder 6 is driven during the measuring box 14 moves downward, and cylinder piston 18 can be to receiving inside the cylinder 6
Contracting, piston position adjustment ring 19 is two semicircular structures, is fixed on the cylinder piston 18, under the measuring box 14 reaches
After spacing, the piston position adjustment ring 19 prevents the cylinder piston from continuing to shrink.And then it ensure that under the measuring box 14
The accuracy of extreme position.
Described measure is provided with hydraulic bjuffer 10 on support 3, the adjustable baffle plate 13 of installation site on the elevating lever 11,
The line slide rail 12 drives the measuring box 14 to be run downwards with certain speed under the drive of the cylinder 6, under
When spacing, the baffle plate 13 is blocked by the tactile hydraulic bjuffer 10, and the 14 downward speed of service of measuring box slows down, slowly
Contact measured housing 20, avoid producing shock.
Displacement transducer 21, pulse coder 22, the axle of the pulse coder 22 are installed inside the measuring box 14
It is connected by flexible clutch 23 with the roller 24 in the left side of measuring box 14, the axle of the roller 24 is installed by support shaft
Plate 25 is fixed on sliding block 36, and the sliding block 36 can move up and down along line slideway 27, and spring top board 28 is fixed on the survey
The rear portion of box 14 is measured, is connected between the spring top board 28 and the support axle installing plate 25 by spring 26.In said structure
In design, due to the effect of the spring 26, the roller 24 will not produce shock when contacting the housing 20 to be measured, meanwhile,
Due to the presence of the flexible clutch 23, certain protective effect is served to the pulse coder 22.
The surface of roller 24 is printed surface, increases the frictional force of the roller 24 and the surface of cylindrical housings 20,
Generation skidding in its rotation process is avoided to cause loss of data.
Unblock button 29, descending button 30, testing button 31, up button 32 and jerk are installed on the button box 5
Button 33, scram button 34 is installed on the regulator cubicle 15, and is band lamp in addition to the scram button 33, scram button 34
Button.Displacement display panel 35 is installed on the button box 5, for the current measurement value of real-time display displacement transducer 21.
Institute's displacement sensors 21 are using the high-precision contact digital sensor of Keyemce GT2 series, the controller 16
From Keyemce KV-Nano Series Controllers.Institute's displacement sensors 21 pass through private cable with the displacement display panel 35
It is connected, ethernet communication, the controller 16 and the work is used between the displacement display panel 35 and the controller 16
Ethernet communication is used between industry touch screen computer 17.Above-mentioned communication modes ensure that the anti-interference of communication speed and communication.
The host computer of detecting system is made up of Industrial touch screen computer 17, and operation interface is based on NI companies of the U.S.
Labview2012 software programmings.There is the host computer operation interface maximum radius for showing this measurement, least radius, circle to jump
The function of dynamic value, and have qualified, unqualified indicator lamp.Meanwhile the operation interface has the inquiry of historical data function, have year,
Five moon, day, tester, workpiece model screening conditions.
The lathe cylindrical housings circle jitter detection apparatus is used for the cylindrical jump for the cylindrical housings processed to lathe
It is dynamic to be detected, product quality is fed back in time, ensures the product quality that production line is produced, and then ensure following process
Be smoothed out.
This device can also be used for the cylindrical glitch detection of other cylindrical products, and product is screened, and find in time not
Qualified products, improve the production efficiency of production line.
The course of work and operation principle of the present utility model are：
Opening host computer circle jump automatic checkout system application software, input product model, software are automatic according to product type
Determine product diameter.Input circle jumps onto limit, the standard whether qualified as product is weighed.Treat that lathe 1 processes workpiece for measurement
Cheng Hou, lathe door is opened, presses descending button 30, after measuring box comes downwards to lower limit, Pen-down detection button 31, roll-shell one
Week, detection are completed, and press up button 32, and measuring box, which is run up, is back to original position, and one-shot measurement is completed.
The detection part of the device mainly has Keyemce KV-Nano Series Controllers, Keyemce GT2 series high accuracy numbers
Sensor, Omron encoder composition.Descending button is pressed first, and cylinder drives measuring box to come downwards to lower limit.Then press
Detection button, PLC high-speed counters enable, turning of work piece, and workpiece for measurement drives roller rotation, displacement sensor work
Part diameter, one-time detection is completed after workpiece for measurement rotates a circle, if now red led is bright on button box, the work to be measured
Part is qualified, if the indicator lamp flashes, the workpiece for measurement is unqualified.Simultaneously controller by Ethernet by this measurement data
Host computer is reached, host computer graphically includes the outer Circular test of the workpiece for measurement in rectangular coordinate system, convenient inspection
Survey personnel check the processing situation of each position of workpiece for measurement.Finally, up button is pressed, cylinder drives measuring box to be back to original
Position.
The operation interface of the device is made up of host computer.Before test is started, product type need to be selected, and inputs round jump
The upper limit.Host computer receives the measurement data that PLC is transmitted after the completion of detection, and carries out calculation process to data, calculates and originally treats
The circle jitter values of workpiece are surveyed, and judge that whether qualified workpiece is.Meanwhile operation interface has the inquiry of historical data function, people is detected
Member can carry out screening inquiry by year, month, day, tester, workpiece model to historical data.
Claims (4)
1. a kind of lathe cylindrical housings justify jitter detection apparatus, the device is arranged on numerically controlled lathe (1), it is characterized in that：Should
The structure of device is that support bottom plate (2) is fixed with the top of the numerically controlled lathe (1), and support bottom plate is provided with measurement on (2)
Support (3), fixes one end of lacing wire I (4) on the measurement support (3), and the other end of lacing wire I (4) is fixed on the support
On bottom plate (2), while one end of lacing wire II (7) is fixed with measurement support (3), the other end of lacing wire II (7) is fixed
At the top of numerically controlled lathe (1), described measurement support (3) side is provided with cylinder (6), measurement support (3) opposite side installation
Tank chain (8), the fixed sliding block (9) of measurement support (3) front installation, measurement support (3) front downside installation hydraulic pressure
Buffer (10)；
The cylinder piston (18) of the cylinder (6) is connected with universal joint (38), and the universal joint (38) passes through connecting plate
(37) elevating lever (11) is connected with, the adjustable baffle plate in position (13), the elevating lever (11) are installed on the elevating lever (11)
Lower end installation measuring box (14), the side of measuring box (14) is provided with roller (24), button is provided with the support bottom plate (2)
Case (5)；
The measuring box (14) is connected with cylinder (6) by cable with button box (5), and button box (5) passes through cable connection electricity
Device cabinet (15), the internal installation controller (16) of Electric Appliance Cabinet (15), Electric Appliance Cabinet (15) top is connected with industry by netting twine and touched
Screen computer (17) is used as host computer, forms detecting system；
The support bottom plate (2) is fixed on the top of numerically controlled lathe (1) by multiple screws, and the bottom of measurement support (3) passes through
Screw is fixed on support bottom plate (2)；
Piston position adjustment ring (19) is fixed with the cylinder piston (18), piston position adjustment ring (19) is two semicircles
Structure；
Displacement transducer (21), the pulse coder (22) of interconnection, the pulse are installed inside the measuring box (14)
The axle of encoder (22) is connected by flexible clutch (23) with roller (24) axle in the measuring box (14), the roller
(24) axle is fixed in support axle installing plate (25) by bearing, and the support axle installing plate (25) is fixed on sliding block (36)
On, the sliding block (36) can move up and down along the line slideway (27) being fixed on inside measuring box, solid in measuring box (14)
Surely there is spring top board (28), pass through spring (26) between the spring top board (28) and the support axle installing plate (25)
Connection；
Be provided with the button box (5) unblock button (29) of interconnection, descending button (30), testing button (31), on
Row button (32) and scram button I (33), scram button II (34) is installed on the Electric Appliance Cabinet (15), and except the jerk is pressed
It is band button outside button I (33) and scram button II (34), displacement display panel (35) is installed on the button box (5).
2. lathe cylindrical housings according to claim 1 justify jitter detection apparatus, it is characterized in that：Institute's displacement sensors
(21) Keyemce KV-Nano systems are selected using the high-precision contact digital sensor of Keyemce GT2 series, the controller (16)
Row controller, institute's displacement sensors (21) are connected with the displacement display panel (35) by private cable, and the displacement shows
Show and ethernet communication is used between panel (35) and the controller (16), the controller (16) and the Industrial touch screen computer
(17) ethernet communication is used between.
3. lathe cylindrical housings according to claim 1 justify jitter detection apparatus, it is characterized in that：The detecting system
The operation interface of host computer Industrial touch screen computer (17) is the Labview2012 software programmings based on NI companies of the U.S..
4. lathe cylindrical housings according to claim 1 justify jitter detection apparatus, it is characterized in that：Roller (24) table
Face is printed surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720159792.6U CN207007122U (en) | 2017-02-22 | 2017-02-22 | Lathe cylindrical housings justify jitter detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720159792.6U CN207007122U (en) | 2017-02-22 | 2017-02-22 | Lathe cylindrical housings justify jitter detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207007122U true CN207007122U (en) | 2018-02-13 |
Family
ID=61427517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720159792.6U Expired - Fee Related CN207007122U (en) | 2017-02-22 | 2017-02-22 | Lathe cylindrical housings justify jitter detection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207007122U (en) |
-
2017
- 2017-02-22 CN CN201720159792.6U patent/CN207007122U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104646565B (en) | A kind of full-automatic stamping line real-time monitoring system | |
| CN103901308B (en) | The intelligent testboard of electric operator of a kind of electro-hydraulic brake and test method thereof | |
| CN203981399U (en) | A kind of harmonic speed reducer transmission accuracy testing apparatus | |
| CN106643607A (en) | Lathe cylindrical shell circular run-out detection device and circular run-out detection method | |
| CN109454019A (en) | A kind of bearing retainer detection device | |
| CN205037886U (en) | Gear dual -sided meshing measuring apparatu that in -band hole was detected | |
| CN207007122U (en) | Lathe cylindrical housings justify jitter detection apparatus | |
| CN204228735U (en) | Measure the device of motor speed | |
| CN201103790Y (en) | Digital cabinet digit meter | |
| CN203163986U (en) | Deceleration-machine test apparatus and deceleration-machine production line | |
| CN211465699U (en) | Numerical control machine tool measuring device for improving machining precision of servo electric cylinder | |
| CN207317726U (en) | A kind of deformation of transmission shaft wear sensing equipment | |
| CN203672602U (en) | Closure performance testing table used for damper valve | |
| CN103616176A (en) | Damper valve-closing performance testing platform and testing method thereof | |
| CN102226707A (en) | Material level measuring device of material bin | |
| CN202770626U (en) | Portable on-site detection apparatus for rack-and-pinion construction elevator anti-falling safety device | |
| CN205427137U (en) | PCB online test device | |
| CN203657721U (en) | Detection device for backlash amount of transmission mechanism | |
| CN104748651A (en) | Method and device for detecting backlash amount of transmission mechanism | |
| CN204007511U (en) | Omnipotent screw measurement device | |
| CN105066920A (en) | Intelligent detector for shaft type parts | |
| CN2848378Y (en) | Automatic detection line of spring parameter | |
| CN206810891U (en) | Lathe continuous punching counting device | |
| CN202033074U (en) | Silo level measuring device | |
| CN103512611A (en) | Temperature and humidity measurement device of machine tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180213 Termination date: 20190222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |