CN203791837U - Manually manipulated multi-joint laser engraving and processing device - Google Patents
Manually manipulated multi-joint laser engraving and processing device Download PDFInfo
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- CN203791837U CN203791837U CN201420170656.3U CN201420170656U CN203791837U CN 203791837 U CN203791837 U CN 203791837U CN 201420170656 U CN201420170656 U CN 201420170656U CN 203791837 U CN203791837 U CN 203791837U
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- 238000010147 laser engraving Methods 0.000 title claims abstract description 27
- 238000009434 installation Methods 0.000 claims description 9
- 230000007306 turnover Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008451 emotion Effects 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 230000033001 locomotion Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000003754 machining Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003042 antagnostic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000002996 emotional effect Effects 0.000 description 1
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- 238000002309 gasification Methods 0.000 description 1
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Abstract
The utility model provides a manually manipulated multi-joint laser engraving and processing device which comprises a plane workbench, an erect support, a vertical fixed-length sleeve, a horizontal telescopic sleeve and a vertical telescopic sleeve; a first-degree reflecting mirror is mounted at the communicating part of a horizontal laser incoming hole and a vertical light guiding hole in the top beam of the erect support; the vertical fixed-length sleeve is mounted on the inner side of the top beam of the erect support in a rotatable manner, and the inner cavity of the vertical fixed-length sleeve is communicated with the vertical light guiding hole; the horizontal telescopic sleeve comprises a horizontal fixed-length section and a horizontal telescopic section, the vertical telescopic sleeve comprises a vertical fixed-length section and a vertical telescopic section, and a spring force feedback device is mounted between the vertical fixed-length section and the vertical telescopic section; a control knob and a manipulating handle are mounted on the outer wall of the vertical telescopic section. The multi-joint laser engraving and processing device is based on the conception of wearable equipment, is reasonable in structure, is light, handy and reliable, is convenient to assemble and disassemble, and can fully play the effects of human wisdom, emotion and manual sensitivity in artwork engraving and processing, and the engraving and the processing are straightforward and visible.
Description
Technical field
The utility model belongs to laser engraving field, is specifically related to a kind of manned multi-joint laser engraving processing unit (plant).
Background technology
Laser engraving processing is to utilize Numeric Control Technology for basis, and laser is process medium, makes material to be processed under Ear Mucosa Treated by He Ne Laser Irradiation, produce the fusing of moment and the physical modification of gasification, reaches the object of processing.Laser engraving processing does not contact with material surface, not affected by mechanical movement, and surface can not be out of shape, and can be applied on nearly all material such as woodwork, sub-gram particle, plastic plate, metallic plate, stone material.
Generally laser instrument during Laser Processing is all fixed, the transmission direction of laser is also fixed so, in order to change Laser Transmission direction, by elements such as speculums, reflect the transmission direction that changes laser, keep laser instrument motionless, allow speculum move along laser beam optical axis direction, thereby allow the laser beam correspondence of refraction produce lateral shift, similar optical axis " flies ", and therefore this light path is called flight light path.
At present, laser engraving system structure comprises the typical structures such as mask-type, working arm scan-type and vibration mirror scanning type.Wherein, working arm scanning type laser index carving system adopts X-Y-Z D translation rectilinear motion joint arm to realize the three-dimensional motion scan of laser beam focal beam spot, mostly adopt stepper motor and ball-screw transmission mechanism to realize the scanning of X-Y-Z working arm, more advanced system adopts linear electric motors to realize more speed and high-precision hot spot motion scan.No matter adopt which kind of hot spot motion scan type of drive, existing laser engraving system all relies in advance depiction or shape is carried out to off-line programing, the laser engraving procedure that sets information such as including laser beam flying motion control instruction, laser unlatching out code, sweep speed change instruction, then computer is controlled and is driven X-Y-Z working arm and laser instrument to process according to laser engraving procedure.
Along with laser processing technology is day by day understood and receives by modern society, the application of laser engraving system is developed to special process and application direction by general engraving gradually, such as woodcarving, art of stone carving product field, creator artists thirst for having suitable mode and device instrument, can utilize laser to carry out Carving Machining, due to noncontact, the retrofit feature of laser engraving, by very laborsaving, save time, meticulous, attractive in appearance.Yet current existing laser engraving system is all off-line programing, computer controlled working in advance, its process manually cannot participate in.Concerning the Carving Machining of the art work, in advance directly perceived, the programming amount of off-line programing mode greatly, without manual operation, once program generates, in process, cannot arbitrarily revise flexibly according to creator's thinking at once, and as everyone knows at present in the world the most intelligent " robot " in wisdom degree, also cannot compare with people, the decisive role of the emotional characteristic of saying nothing of people in the art work is produced.
Utility model content
The utility model, for above-mentioned the deficiencies in the prior art, provides a kind of manned multi-joint laser engraving processing unit (plant); This manned multi-joint laser engraving processing unit (plant) is based on wearable device concept, rational in infrastructure, light and handy reliable, easy accessibility, can give full play to people's wisdom, emotion, the effect of manpower susceptibility in the Carving Machining process of the art work, Carving Machining is intuitively visual, flexible.
The utility model is achieved by the following technical solution:
A manned multi-joint laser engraving processing unit (plant), comprises planar working table, stand, vertical fixed length sleeve, horizontal extension sleeve and vertical extension sleeve;
Described stand is erected on planar working table, and can move horizontally along described planar working table; On the back timber of described stand, be provided with the horizontal laser light being interconnected and enter perforation and vertical light-conductive hole, horizontal laser light enter perforation and vertically the internal diameter of light-conductive hole be all greater than the diameter of laser beam; The connectivity part that described horizontal laser light enters perforation and vertical light-conductive hole is provided with the one 45 degree speculum, its installation position is along horizontal laser light, to enter the central axis glancing incidence of perforation when laser beam, after the reflection of the one 45 degree speculum, make light path turnover degree enter vertical light-conductive hole, and advance along the central axis of vertical light-conductive hole, enter vertical fixed length sleeve;
The rotatable back timber inner side that is arranged on stand of described vertical fixed length sleeve; Vertically fixed length sleeve is hollow structure, and internal diameter is greater than the diameter of laser beam, and its hollow cavity is communicated with vertical light-conductive hole, and the central axes of the two;
Described horizontal extension sleeve comprises horizontal fixed length section and horizontal extension section, described horizontal extension section is slidably installed at the inwall of horizontal fixed length section, the two equal hollow, and internal diameter is greater than the diameter of laser beam, and central axes, can stretch out or shrink along horizontal direction; Described horizontal fixed length section is fixedly mounted on vertical fixed length sleeve, both intracavity inter-connections, and the central axis of both inner chambers is mutually vertical, connectivity part is provided with the 2 45 degree speculum, its installation position is to advance along the central axis of vertical fixed length sleeve when laser beam, after the reflection of the 2 45 degree speculum, make light path turnover degree enter horizontal extension sleeve, and advance along its central axis;
Described vertical extension sleeve comprises vertical fixed length section, vertical telescopic section and spring force feedback device, vertically fixed length section and vertically the two equal hollow of telescopic section, and internal diameter is greater than the diameter of laser beam, and central axes; Described vertical telescopic section is slidably installed at the inwall of vertical fixed length section, can stretch out or shrink along vertical direction; Described spring force feedback device is arranged between vertical fixed length section and vertical telescopic section, for making vertical telescopic section be subject to all the time return active force straight up;
Described vertical fixed length section is fixedly mounted in the horizontal extension section of horizontal extension sleeve, both intracavity inter-connections, and the central axis of both inner chambers is mutually vertical, connectivity part is provided with the 3 45 degree speculum, its installation position is to advance along the central axis of horizontal extension sleeve when laser beam, after the reflection of the 3 45 degree speculum, make light path turnover degree enter vertical extension sleeve, and advance along its central axis; The end of described vertical telescopic section is provided with condenser lens, the central axis of condenser lens and the vertically central axes of extension sleeve;
Through horizontal laser light, enter the laser beam of perforation incident, after the transmission by the one 45 degree speculum, the 2 45 degree speculum and the 3 45 degree speculum, be incident to condenser lens, condenser lens focuses on output by laser beam;
Control handle and rotatable control handle are installed on the outer wall of described vertical telescopic section, and described control handle is for controlling the power of Laser output; Whether described rotatable control handle is used for controlling laser beam exports, and the length of level of control extension sleeve and vertical extension sleeve.
Preferably, be provided with a plurality of guide chutes on the inwall of described horizontal fixed length section, be provided with a plurality of guide runners on the outer wall of described horizontal extension section, described guide runner coordinates with guide chute realizes stretching out or shrinking of horizontal extension section.
Preferably, described spring force feedback device is a spring, and vertically telescopic section is arranged in vertical fixed length section by bearing, and its top is provided with the first spacing round platform, and spring pre-tightening compression is arranged between bearing and the first spacing round platform; In described vertical fixed length section, be provided with the second spacing round platform, described the second spacing round platform is for limiting the displacement of vertical telescopic section.
The beneficial effects of the utility model are as follows:
1, manned multi-joint laser engraving processing unit (plant) described in the utility model does not adopt the frame for movement of traditional XYZ rectangular coordinate system motion working arm, but adopts similar rocking handle mechanism, inner hollow, and built-in flight light path; Horizontal extension sleeve and vertically extension sleeve can stretch, wherein horizontal extension sleeve stretches for elongating light path coverage area, vertically extension sleeve stretches for manual controlled working defocusing amount (spot size), the action of all flight light paths can be driven by artificial one hand or both hands, compare the laser engraving system that existing computer is controlled, type of drive is simple, rational in infrastructure, light and handy reliable, easy accessibility.
2, manned multi-joint laser engraving processing unit (plant) described in the utility model, be provided with vertical extension sleeve structure, when people's holds control handle is carved, it drives the vertical stretching motion of focus head can bring laser beam foucing in the positive and negative defocusing amount size of surface of the work, that is the size of adjusting laser beam focal beam spot, thereby realize the function that engraving " stroke " thickness regulates.
And, vertically in extension sleeve structure, spring force feedback device is installed, people's holds control handle has the antagonistic spring force feedback of downforce while carrying out telescopic adjustment, press down the application of force larger, hot spot is larger, and engraving " stroke " is thicker, meets the application of force custom that manpower makes cutter engraving, be conducive to people and in engraving process, regulate arbitrarily engraving width, free hold.
3, the gauge tap arranging on control handle and grip structure, can, for controlling laser switch and laser power (etching depth), be conducive to people free adjustment and grasp carving depth in engraving process, lithe.
4, manned multi-joint laser engraving processing unit (plant) described in the utility model, off-line programing in advance, and directly controlled by manpower, engraving process What You See Is What You Get, freedom and flexibility, meet artistical creation custom, fully people's mental wisdom, emotion, the effect of manpower susceptibility in the Carving Machining of the art work.
Accompanying drawing explanation
Fig. 1 is the structure chart of manned multi-joint laser engraving processing unit (plant) described in the utility model;
Fig. 2 is the location drawing of 45 degree speculums;
Fig. 3 is the structure chart of stand;
Fig. 4 is the structure chart of vertical extension sleeve (when vertically fixed length section is transparent).
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
As Figure 1-4, the utility model provides a kind of manned multi-joint laser engraving processing unit (plant), comprise planar working table 1, stand 2, vertical fixed length sleeve 3, horizontal extension sleeve 4 and vertical extension sleeve 5, described stand 2 is erected on planar working table 1, and can move horizontally along described planar working table 1; On the back timber of described stand 2, be provided with the horizontal laser light being interconnected and enter perforation 21 and vertical light-conductive hole 22, horizontal laser light enter perforation 21 and vertically the internal diameter of light-conductive hole 22 be all greater than the diameter of laser beam; The connectivity part that described horizontal laser light enters perforation 21 and vertical light-conductive hole 22 is provided with the one 45 degree speculum 23, its installation position is along horizontal laser light, to enter the central axis glancing incidence of perforation 21 when laser beam, after the reflection of the one 45 degree speculum 23, make light path turnover 90 degree enter vertical light-conductive hole 22, and advance along the central axis of vertical light-conductive hole 22, enter vertical fixed length sleeve 3.
Described vertical fixed length sleeve 3 is by the rotatable back timber inner side that is arranged on stand 2 of bearing assembly, and vertically fixed length sleeve 3 is hollow structure, and internal diameter is greater than the diameter of laser beam, and the inner chamber of its hollow is communicated with vertical light-conductive hole 22, and the central axes of the two.
Described horizontal extension sleeve 4 comprises horizontal fixed length section 41 and horizontal extension section 42, described horizontal extension section 42 is slidably installed at the inwall of horizontal fixed length section 41, the two equal hollow, and internal diameter is greater than the diameter of laser beam, and central axes, can stretch out or shrink along horizontal direction; Concretely, be provided with a plurality of guide chutes on the inwall of horizontal fixed length section 41, be provided with a plurality of guide runners on the outer wall of described horizontal extension section 42, described guide runner coordinates with guide chute realizes stretching out or shrinking of horizontal extension section 42.
Described horizontal fixed length section 41 is fixedly mounted on vertical fixed length sleeve 3, both intracavity inter-connections, and the central axis of both inner chambers is mutually vertical, connectivity part is provided with the 2 45 degree speculum 24, its installation position is to advance along the central axis of vertical fixed length sleeve 3 when laser beam, after the reflection of the 2 45 degree speculum 24, make light path turnover 90 degree enter horizontal extension sleeve 4, and advance along its central axis.
Described vertical extension sleeve 5 comprises vertical fixed length section 51, vertical telescopic section 52 and spring force feedback device, vertically fixed length section 51 and vertically telescopic section 52 the two equal hollow, and internal diameter is greater than the diameter of laser beam, and central axes; Described vertical telescopic section 52 is slidably installed at the inwall of vertical fixed length section 51, can stretch out or shrink along vertical direction; Described spring force feedback device is arranged between vertical fixed length section 51 and vertical telescopic section 52, for making vertical telescopic section 52 be subject to all the time return active force straight up.
Preferably, spring force feedback device can be realized by spring 53.Wherein, vertically telescopic section 52 is arranged in vertical fixed length section 51 by bearing 55, and its top is provided with the first spacing round platform 56, and spring 53 pretension compressions are arranged between bearing 55 and the first spacing round platform 56; In described vertical fixed length section 51, be provided with the second spacing round platform 57, described the second spacing round platform 57 is for limiting the displacement of vertical telescopic section 52.After vertical telescopic section 52 is subject to external force drop-down, the first spacing round platform 56 is with vertically telescopic section 52 is together descending, and bearing 55 invariant positions, so spring 53 is further compressed, thereby makes vertical telescopic section 52 be subject to all the time return active force straight up.Certainly spring force feedback device can also adopt other structures of the prior art to realize, and does not repeat them here.
Described vertical fixed length section 51 is fixedly mounted in the horizontal extension section 42 of horizontal extension sleeve 4, both intracavity inter-connections, and the central axis of both inner chambers is mutually vertical, connectivity part is provided with the 3 45 degree speculum 25, its installation position is to advance along the central axis of horizontal extension sleeve 4 when laser beam, after the reflection of the 3 45 degree speculum 25, make light path turnover 90 degree enter vertical extension sleeve 5, and advance along its central axis.The end of described vertical telescopic section 52 is provided with condenser lens 26, the central axis of condenser lens 26 and the vertically central axes of extension sleeve 5.
Through horizontal laser light, enter the laser beam of perforation incident 21, after the transmission by the one 45 degree speculum the 23, the 2 45 degree speculum 24 and the 3 45 degree speculum 25, be incident to condenser lens 26, condenser lens 26 focuses on output by laser beam.
Control handle 53 and rotatable control handle 54 are installed on the outer wall of described vertical telescopic section 52, and described control handle 53 is for controlling the power of Laser output; Whether described rotatable control handle 54 is exported for controlling laser beam, and the length of level of control extension sleeve 4 and vertical extension sleeve 5.
It is apparent to one skilled in the art that the utility model can be changed into various ways, and such change is not thought and departed from scope of the present utility model.All so apparent modifications of the technical staff to described field, within being included in the scope of this claim.
Claims (3)
1. a manned multi-joint laser engraving processing unit (plant), is characterized in that, comprises planar working table (1), stand (2), vertical fixed length sleeve (3), horizontal extension sleeve (4) and vertical extension sleeve (5);
It is upper that described stand (2) is erected at planar working table (1), and can move horizontally along described planar working table (1); On the back timber of described stand (2), be provided with the horizontal laser light being interconnected and enter perforation (21) and vertical light-conductive hole (22), the internal diameter that horizontal laser light enters perforation (21) and vertical light-conductive hole (22) is all greater than the diameter of laser beam; The connectivity part that described horizontal laser light enters perforation (21) and vertical light-conductive hole (22) is provided with the one 45 degree speculum (23), its installation position is along horizontal laser light, to enter the central axis glancing incidence of perforation (21) when laser beam, after the reflection of the one 45 degree speculum (23), make light path turnover (90) degree enter vertical light-conductive hole (22), and advance along the central axis of vertical light-conductive hole (22), enter vertical fixed length sleeve (3);
The rotatable back timber inner side that is arranged on stand (2) of described vertical fixed length sleeve (3); Vertically fixed length sleeve (3) is hollow structure, and internal diameter is greater than the diameter of laser beam, and its hollow cavity is communicated with vertical light-conductive hole (22), and the central axes of the two;
Described horizontal extension sleeve (4) comprises horizontal fixed length section (41) and horizontal extension section (42), described horizontal extension section (42) is slidably installed at the inwall of horizontal fixed length section (41), the two equal hollow, internal diameter is greater than the diameter of laser beam, and central axes, can stretch out or shrink along horizontal direction; Described horizontal fixed length section (41) is fixedly mounted on vertical fixed length sleeve (3), both intracavity inter-connections, and the central axis of both inner chambers is mutually vertical, connectivity part is provided with the 45th degree speculum (24), its installation position is to advance along the central axis of vertical fixed length sleeve (3) when laser beam, after the reflection of the 2 45 degree speculum (24), make light path turnover (90) degree enter horizontal extension sleeve (4), and advance along its central axis;
Described vertical extension sleeve (5) comprises vertical fixed length section (51), vertical telescopic section (52) and spring force feedback device, vertically fixed length section (51) and vertically the two equal hollow of telescopic section (52), internal diameter is greater than the diameter of laser beam, and central axes; Described vertical telescopic section (52) is slidably installed at the inwall of vertical fixed length section (51), can stretch out or shrink along vertical direction; Described spring force feedback device is arranged between vertical fixed length section (51) and vertical telescopic section (52), for making vertical telescopic section (52) be subject to all the time return active force straight up;
Described vertical fixed length section (51) is fixedly mounted in the horizontal extension section (42) of horizontal extension sleeve (4), both intracavity inter-connections, and the central axis of both inner chambers is mutually vertical, connectivity part is provided with the 3 45 degree speculum (25), its installation position is to advance along the central axis of horizontal extension sleeve (4) when laser beam, after the reflection of the 3 45 degree speculum (25), make light path turnover (90) degree enter vertical extension sleeve (5), and advance along its central axis; The end of described vertical telescopic section (51) is provided with condenser lens (26), the central axis of condenser lens (26) and the vertically central axes of extension sleeve (5);
Through horizontal laser light, enter the laser beam of perforation (21) incident, after transmission by the one 45 degree speculum (23), the 2 45 degree speculum (24) and the 3 45 degree speculum (25), be incident to condenser lens (26), condenser lens (26) focuses on output by laser beam;
Control handle (53) and rotatable control handle (54) are installed on the outer wall of described vertical telescopic section (52), and described control handle (53) is for controlling the power of Laser output; Whether described rotatable control handle (54) is exported for controlling laser beam, and the length of level of control extension sleeve (4) and vertical extension sleeve (5).
2. manned multi-joint laser engraving processing unit (plant) according to claim 1, it is characterized in that, on the inwall of described horizontal fixed length section (41), be provided with a plurality of guide chutes, on the outer wall of described horizontal extension section (42), be provided with a plurality of guide runners, described guide runner coordinates with guide chute realizes stretching out or shrinking of horizontal extension section (42).
3. manned multi-joint laser engraving processing unit (plant) according to claim 1, it is characterized in that, described spring force feedback device is a spring (53), vertically telescopic section (52) is arranged in vertical fixed length section (51) by bearing, its top is provided with the first spacing round platform, and the compression of spring (53) pretension is arranged between bearing and the first spacing round platform; In described vertical fixed length section (51), be provided with the second spacing round platform, described the second spacing round platform is used for limiting the displacement of vertical telescopic section (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420170656.3U CN203791837U (en) | 2014-04-02 | 2014-04-02 | Manually manipulated multi-joint laser engraving and processing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420170656.3U CN203791837U (en) | 2014-04-02 | 2014-04-02 | Manually manipulated multi-joint laser engraving and processing device |
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| CN203791837U true CN203791837U (en) | 2014-08-27 |
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| CN201420170656.3U Expired - Fee Related CN203791837U (en) | 2014-04-02 | 2014-04-02 | Manually manipulated multi-joint laser engraving and processing device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878489A (en) * | 2014-04-02 | 2014-06-25 | 温州职业技术学院 | Laser hand carving device |
| CN106826805A (en) * | 2017-04-17 | 2017-06-13 | 菏泽学院 | A kind of robot arm of multi-angle precise control |
| CN108311791A (en) * | 2015-07-31 | 2018-07-24 | 胡惠芳 | A kind of multifunction three-dimensional laser engraving machine |
| CN108962812A (en) * | 2018-09-06 | 2018-12-07 | 重庆科技学院 | A kind of application method of rotary-type chip fixture |
| CN111230303A (en) * | 2020-02-14 | 2020-06-05 | 中国航空制造技术研究院 | Laser-electric arc composite coaxial fuse device |
| CN116922990A (en) * | 2023-07-27 | 2023-10-24 | 重庆市测绘科学技术研究院(重庆市地图编制中心) | Method for manufacturing contour line model of fine wood carving process |
-
2014
- 2014-04-02 CN CN201420170656.3U patent/CN203791837U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878489A (en) * | 2014-04-02 | 2014-06-25 | 温州职业技术学院 | Laser hand carving device |
| CN103878489B (en) * | 2014-04-02 | 2015-08-05 | 温州职业技术学院 | A kind of laser hand engraving device |
| CN108311791A (en) * | 2015-07-31 | 2018-07-24 | 胡惠芳 | A kind of multifunction three-dimensional laser engraving machine |
| CN106826805A (en) * | 2017-04-17 | 2017-06-13 | 菏泽学院 | A kind of robot arm of multi-angle precise control |
| CN108962812A (en) * | 2018-09-06 | 2018-12-07 | 重庆科技学院 | A kind of application method of rotary-type chip fixture |
| CN108962812B (en) * | 2018-09-06 | 2023-06-27 | 重庆科技学院 | Use method of rotary chip clamp |
| CN111230303A (en) * | 2020-02-14 | 2020-06-05 | 中国航空制造技术研究院 | Laser-electric arc composite coaxial fuse device |
| CN116922990A (en) * | 2023-07-27 | 2023-10-24 | 重庆市测绘科学技术研究院(重庆市地图编制中心) | Method for manufacturing contour line model of fine wood carving process |
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| CF01 | Termination of patent right due to non-payment of annual fee |