CN110340518A - Three axis galvanometers of one kind and large format imprinter - Google Patents
Three axis galvanometers of one kind and large format imprinter Download PDFInfo
- Publication number
- CN110340518A CN110340518A CN201910630202.7A CN201910630202A CN110340518A CN 110340518 A CN110340518 A CN 110340518A CN 201910630202 A CN201910630202 A CN 201910630202A CN 110340518 A CN110340518 A CN 110340518A
- Authority
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- China
- Prior art keywords
- axis
- laser
- mounting base
- imprinter
- reflection plate
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
- B23K26/046—Automatically focusing the laser beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
- B23K26/0838—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
Abstract
The present invention relates to laser beam marking fields, more specifically, it is related to three axis galvanometers of one kind and large format imprinter, including clamps mounting base, X-axis laser reflection plate, Y-axis laser reflection plate, further includes being arranged in clamp in mounting base for adjusting the Z axis laser focal adjustment device of laser degree of focus；The X-axis laser reflection plate and Y-axis laser reflection plate, which are spindle rotationally arranged in, to be clamped in mounting base；The laser is after the focusing of Z axis laser focal adjustment device, it exports and is marked after being reflected again via X-axis laser reflection plate and Y-axis laser reflection plate, three axis galvanometer disclosed by the invention, by clamping the Z axis laser focal adjustment device increased in mounting base for adjusting laser degree of focus, only need the degree of focus of the mobile i.e. controllable laser of Z axis laser focal adjustment device, it can make to mark range expansion in X-axis, furthermore, pass through the adjusting of focal power, also the case where precision of the edge of marking can be made higher, avoid the occurrence of dislocation linking.
Description
Technical field
The present invention relates to laser beam marking fields, more particularly, to a kind of three axis galvanometers and large format imprinter.
Background technique
In laser beam marking field, there are mainly two types of application modes at present: dynamic flying marking and static marking, from breadth angle
Degree is to divide and be divided into: small breadth marking and large format marking, and the static technology for marking relative flight marking in practical applications is wanted
Simply, because not generating opposite movement between laser equipment and the product marked, and the switching of product is all fixed
Period.
But the mode of static marking, marking requires to wait products loading and unloading that can just start to mark after the completion every time, imitates
Rate is very low, and right dynamic flying marking, since object is in continuous motion state, the marking of product is continuously to mark
, supplied materials is withouted waiting for, the efficiency of marking can be improved.
However traditional flight marking is all marked using two axis galvanometers auxiliary, therefore, breadth size receives
Greatly limitation, and edge is easy to appear position deviation and causes discontinuous, therefore, current flight marking can only be done slightly
Face marking.
It is therefore proposed that a kind of three axis galvanometers to solve the above problems and large format imprinter are actually necessary.
Summary of the invention
In order to overcome at least one of the drawbacks of the prior art described above (deficiency), breadth can be expanded to the present invention by providing one kind
And edge position is not in the three axis galvanometers and large format imprinter of deviation.
In order to solve the above technical problems, technical scheme is as follows: a kind of three axis galvanometers, including clamp mounting base, X
Axis laser reflection plate, Y-axis laser reflection plate further include being arranged in clamp to swash in mounting base for adjusting the Z axis of laser degree of focus
Light focal adjustment device；
The X-axis laser reflection plate and Y-axis laser reflection plate, which are spindle rotationally arranged in, to be clamped in mounting base；The laser warp
After Z axis laser focal adjustment device focuses, then exports and is marked after being reflected via X-axis laser reflection plate and Y-axis laser reflection plate,
By increasing by one for adjusting the Z axis laser focal adjustment device of laser degree of focus in clamping mounting base, it is only necessary to mobile Z axis
Therefore laser focal adjustment device, that is, controllable laser degree of focus can make to mark range expansion in X-axis, in addition, being used for
The case where adjusting of focal power can also make the precision of the edge of marking higher, avoid the occurrence of dislocation linking, realization synchronizes seamless
Docking.
Further, the Z axis laser focal adjustment device include focusing lens, angle control turn-knob, adjust linking arm and
The Z axis mounting base clamped in mounting base is set；
The angle control turn-knob setting is on clamping mounting base；
Described adjusting linking arm one end is connected with angle control turn-knob, and the other end is arranged on focusing lens, passes through angle
Degree control turn-knob, both can quickly be adjusted the distance of focusing lens, and in practical applications, can according to need use
The focusing lens of different size and degree of focus play better focussing force.
Further, the adjusting linking arm includes the regulating arm being arranged on focusing lens and controls turn-knob with angle
The connection slide block being connected, the regulating arm are hinged on connection slide block, are controlled turn-knob by rotation angle, can both be controlled
System adjusts the release range of linking arm, to control to adjust arm control focusing lens displacement, plays expansion engraving breadth and on side
The case where position is not in deviation at edge generation.
Further, the focusing lens are equipped with sliding shoe, and the regulating arm is connected by sliding shoe with focusing lens
It connects, by the setting of sliding shoe, focusing lens can be enabled movably to move on clamping mounting base as needed, it is convenient
It adjusts.
It further, further include that the fixed baffle clamped in mounting base is set, the fixed baffle is equipped with and is used for
The through-hole or notch that laser passes through, by the setting of fixed baffle, the multi-angle that can be used for clamping mounting base is fixed, convenient for peace
Dress.
Further, the Z axis mounting base is equipped with mobile positive stop strip, and the sliding shoe is in the promotion for adjusting linking arm
Under be movably disposed on mobile positive stop strip, by the setting of mobile positive stop strip, so that the movement of focusing lens is the same as always
On line, the moving direction of focusing lens is limited, guarantees that the point focused is on the same line.
In the present invention, a kind of large format imprinter, including imprinter ontology, conveyer and multiple laser beam markings are also disclosed
Head,
Three axis galvanometers are equipped in the laser beam marking head；
The induction trigger with laser beam marking head mutual induction is provided on the conveyer；
The multiple laser beam marking head is uniformly arranged on imprinter ontology along the direction of conveyer transported material, passes through
Using multiple interior laser beam marking heads for setting three axis galvanometers in large format imprinter, the biggish picture of picture can be separated into more
A laser beam marking head is marked, and compared with the existing technology, the application of three axis galvanometers enhances the focusing capability of laser, compensation
Optimum focusing degree of the large format imprinter in X-axis marking range in edge, so that the boundary of picture is more clear, it will not
There is the case where dislocation linking, realizes seamless interfacing.
It further, further include the laser controller being arranged on imprinter ontology, the laser controller and laser
Imprint head is connected, and by laser controller, can according to need the closure or openness of control laser beam marking head, or to laser
Marking angle is adjusted, simple and convenient.
Further, the conveyer includes conveyor belt and conveying roller, and the conveyor belt is set in conveying roller
Outside can push conveyor belt to push to be processed, by controlling conveying roller convenient for the transport of product.
Further, the imprinter ontology is equipped with net smoke pipeline and can will be marked by the setting of net smoke pipeline
When generate exhaust gas discharge, convenient for keep workshop in it is with fresh air.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
(1) three axis galvanometer disclosed by the invention, by increasing by one for adjusting laser degree of focus in clamping mounting base
Z axis laser focal adjustment device, it is only necessary to the degree of focus of mobile Z axis laser focal adjustment device, that is, controllable laser therefore can be with
Make to mark range expansion in X-axis, in addition, being used for the adjusting of focal power, can also make the precision of the edge of marking higher, keep away
Exempt from the case where dislocation linking occur, realizes synchronous seamless interfacing.
(2) three axis galvanometer disclosed by the invention controls turn-knob by angle, both can be quickly to the distance of focusing lens
It is adjusted, in practical applications, can according to need the focusing lens using different size and degree of focus, play preferably poly-
It uses in Jiaozhuo.
(3) large format imprinter disclosed by the invention sets three axis galvanometers by using in multiple in large format imprinter
Laser beam marking head, the biggish picture of picture can be separated into multiple laser beam marking heads and marked, compared with the existing technology,
The application of three axis galvanometers, enhances the focusing capability of laser, compensates for large format imprinter in X-axis marking range in edge
Optimum focusing degree is not in the case where dislocation is connected, realizes seamless interfacing so that the boundary of picture is more clear.
Detailed description of the invention
Fig. 1 is the structure principle chart of two axis galvanometers in the present invention.
Fig. 2 is the structural schematic diagram of two axis galvanometers in the present invention.
Fig. 3 is the structure principle chart of three axis galvanometers in the present invention.
Fig. 4 is the structural schematic diagram of three axis galvanometers in the present invention.
Fig. 5 is the partial enlarged view of Z axis laser focal adjustment device in the present invention.
Fig. 6 is the structural schematic diagram of laser beam marking head in the present invention.
Fig. 7 is the main view of large format imprinter in the present invention.
Fig. 8 is the left view of large format imprinter in the present invention.
Fig. 9 is the top view of large format imprinter in the present invention.
In figure, 1 be clamp mounting base, 2 be X-axis laser reflection plate, 3 be Y-axis laser reflection plate, 4 be Z axis laser focusing adjust
Section device, 5 be focusing lens, 6 be angle control turn-knob, 7 be adjusting linking arm, 8 be Z axis mounting base, 9 be regulating arm, 10 be company
Connect slide block, 11 be sliding shoe, 12 be fixed baffle, 13 be through-hole, 14 be mobile positive stop strip, 15 be extension board, 16 be X-axis connect
Switch through axis, 17 be Y-axis connection shaft, 18 be X-axis angular adjustment seat, 19 be Y-axis angular adjustment seat, 20 be imprinter ontology, 21
It is laser beam marking head for conveyer, 22,23 be laser controller, 24 be conveyor belt, 25 be conveying roller, 26 is net smoke pipe
Road.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " connects
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, be also possible to be indirectly connected with by intermediary, it may be said that two
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
It as shown in Figs. 1-2, is two axis galvanometers, current two axis countermark technology is very mature, and relevant technological development is prominent
It is broken to have had reached the limit, especially in flight countermark technology in use, marking can be confined to using the marking of two axis
Therefore the collocation of breadth and its speed is not suitable for the marking of large format, in addition, the marking of two axis large formats is currently quiet
The application of state will also use the collocation of CCD vision technique to go to realize using the mode of splicing, this product in actual utilization
Marking usually will appear that consistency is bad, and the marking linking of joining place is not in place, finally, two axis galvanometers are in use process
In, each laser equipment uses and respectively uses independent encoder, the coding between so different machine due to using
Device diameter dimension, or installation have differences and result in, the coding disunity of each machine, the product space of marking each in this way
Front and back can have certain deviation, the consistency of product can not just guarantee.
As shown in Figure 3-4, in the present invention, open a kind of three axis galvanometers, including clamp mounting base 1, X-axis laser reflection plate
2, Y-axis laser reflection plate 3 further includes being arranged in clamp in mounting base 1 for adjusting the Z axis laser focal adjustment of laser degree of focus
Device 4, by clamping setting Z axis laser focal adjustment device 4 in mounting base 1, it is only necessary to mobile Z axis laser focal adjustment device
The degree of focus of laser is manipulated, therefore, can make to mark range expansion in X-axis, in addition, the adjusting for focal power, can also make
The case where precision for the edge that must be marked is higher, avoids the occurrence of dislocation linking, realizes synchronous seamless interfacing, wherein X-axis laser
Reflecting plate 2 and the setting of Y-axis laser reflection plate 3 are rotary on clamping mounting base；Laser is focused through Z axis laser
It after adjuster 4 focuses, then exports and is marked after being reflected via X-axis laser reflection plate and Y-axis laser reflection plate, in this way
Mode is marked, and online flight large format marking is able to achieve, due to only needing mobile Z axis laser focal adjustment device that can grasp
The degree of focus of laser, therefore strong operability are controlled, can be switched fast in user's operation machine switching product, without professional
Very strong personnel debug to do.
As seen in figs. 5-6, Z axis laser focal adjustment device 4 includes focusing lens 5, angle control turn-knob 6, adjusts linking arm 7
With the Z axis mounting base 8 being arranged in clamping mounting base；Angle controls the setting of turn-knob 6 on clamping mounting base 1；Adjust linking arm
One end is connected with angle control turn-knob, and the other end is arranged on focusing lens, controls turn-knob by angle, both can be quick
The distance of focusing lens is adjusted, in practical applications, can according to need the focusing using different size and degree of focus
Eyeglass plays better focussing force, and the marking range of setting in this way, X-direction is determined by the hardware configuration of itself, phase
Pair marking effect and time of marking all determine that Y-direction (direction of motion) is placed on as long as meeting X in certain period by it
Marking finishes, and the marking range of Y-direction is can to increase with the increasing of the direction of motion, and the addition of focusing lens, can from
Dynamic focusing compensates optimum focusing of the X-axis in marking range at edge, realizes the purpose for increasing the marking breadth of X-axis.
In the present invention, linking arm 7 is adjusted to include the regulating arm 9 being arranged on focusing lens 5 and control turn-knob with angle
The connection slide block 10 being connected, regulating arm 9 are hinged on connection slide block 10, control turn-knob by rotation angle, both can be with
Control to adjust linking arm release range, thus control to adjust arm control focusing lens displacement, play expansion engraving breadth and
The case where edge position is not in deviation generation, and sliding shoe 11 is equipped on focusing lens, regulating arm passes through sliding shoe
It is connected with focusing lens, by the setting of sliding shoe, focusing lens can be enabled movably to clamp peace as needed
It is moved on dress seat, facilitates adjusting.
It in addition to this, further include that the fixed baffle 12 clamped in mounting base is set, fixed baffle, which is equipped with, is used for laser
The through-hole 13 passed through, by the setting of fixed baffle, the multi-angle that can be used for clamping mounting base is fixed, is easily installed, in Z axis
Mounting base 8 is equipped with mobile positive stop strip 14, and sliding shoe is movably disposed at mobile positive stop strip under the promotion for adjusting linking arm
On, by the setting of mobile positive stop strip so that the movement of focusing lens is on the same line, to the moving directions of focusing lens into
Row limitation guarantees that the point focused is on the same line.
In addition to this, extension board 15 is equipped on clamping mounting base 1, X-axis laser reflection plate and Y-axis laser reflection plate can turn
Dynamic setting, by the setting of extension board, allows X-axis laser reflection plate and Y-axis laser reflection plate more preferable on extension board
Be fixed on extension board, in addition, further including X-axis connection shaft 16, Y-axis connection shaft 17, the X that is separately positioned on extension board
Shaft angle degree adjustment seat 18 and Y-axis angular adjustment seat 19；X-axis angular adjustment seat connects shaft and X-axis laser reflection plate phase by X-axis
Connection；Y-axis angular adjustment seat connects shaft by Y-axis and is connected with Y-axis laser reflection plate, passes through X-axis angular adjustment seat and Y-axis
Angular adjustment seat both can control the reflection angle of X-axis laser reflection plate and Y-axis laser reflection plate, simple and convenient, in the present invention
In, it clamps mounting base 1 and is an integral structure with extension board 15, the clamping mounting base and extension board of integral type are easily installed and unite
One disassembly.
As Figure 7-9, in the present invention, a kind of large format imprinter for applying three axis galvanometers, including marking are also disclosed
Machine ontology 20, conveyer 21 and multiple laser beam marking heads 22, wherein three axis galvanometers are equipped in laser beam marking head；It is set on conveyer
It is equipped with the induction trigger with laser beam marking head mutual induction；Multiple laser beam marking heads are uniform along the direction of conveyer transported material
Setting on imprinter ontology, by large format imprinter using the laser beam marking heads for setting three axis galvanometers in multiple, can
It is marked so that the biggish picture of picture is separated into multiple laser beam marking heads, compared with the existing technology, the application of three axis galvanometers,
The focusing capability of laser is enhanced, optimum focusing degree of the large format imprinter in X-axis marking range in edge is compensated for, so that
The case where boundary of picture is more clear, and is not in dislocation linking, realizes seamless interfacing.
In addition to this, the laser controller on imprinter ontology, laser controller are connected with laser beam marking head, pass through
Laser controller 23, can according to need the closure or openness of control laser beam marking head, or adjust to the marking angle of laser
Section, it is simple and convenient, and conveyer includes conveyor belt 24 and conveying roller 25, conveyor belt is set on the outside of conveying roller, is led to
Control conveying roller is crossed, conveyor belt can be pushed to push to be processed, convenient for the transport of product, in imprinter ontology
It is equipped with net smoke pipeline 26, by the setting of net smoke pipeline, the exhaust gas generated when marking can be discharged, convenient for keeping production vehicle
Interior is with fresh air.
By being arranged three axis galvanometers in imprinter, the article with marking is followed by conveyor belt movement, in movement
In the process, the information of the induction trigger start recording article in imprinter, and three are set due to being equipped in multiple in imprinter
The laser beam marking head of axis galvanometer, block material product move to the position of setting, and laser beam marking head starts to execute marking order, multiple laser
Imprint head respectively marks article, so that article completes portraying for pictorial pattern, and passes through the setting of three axis galvanometers, and every two
Marking gap between a laser head be it is adjustable, therefore, the marking of large format can be suitble to, and focusing lens can be automatic right
Coke compensates optimum focusing of the X-axis in marking range at edge, so that the imprinting of marginal portion is not in displacement or misplaces
The case where.
In the present invention, by adding Z axis laser focal adjustment device on clamping mounting base, it can play and laser is carried out
The effect of the lateral recording area of focusing and expansion laser, due to being focused to laser, so that the imprinting of marginal portion is not
The case where will appear displacement or misplacing, quickly can carry out imprinting, in addition to this, this hair to picture during goods transportation
It is bright that a kind of large format CD writer is also disclosed, by the way that multiple laser beam marking heads are arranged along belt direction, when induction trigger inspection
Measure when needing laser beam marking, the marking of laser beam marking head adjusts the range of marking as needed, it is ensured that multiple laser beam marking heads it
Between marking there are gaps.
In figure, description positional relationship only for illustration, should not be understood as the limitation to this patent；Obviously, this hair
Bright the above embodiment is merely an example for clearly illustrating the present invention, and is not to embodiments of the present invention
It limits.For those of ordinary skill in the art, other different forms can also be made on the basis of the above description
Variation or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all the spirit and principles in the present invention it
Any modifications, equivalent replacements, and improvements made by interior etc., should all be included in the scope of protection of the claims of the present invention.
Claims (10)
1. a kind of three axis galvanometers, including clamp mounting base, X-axis laser reflection plate, Y-axis laser reflection plate, which is characterized in that also wrap
It includes to be arranged in and clamp in mounting base for adjusting the Z axis laser focal adjustment device of laser degree of focus；
The X-axis laser reflection plate and Y-axis laser reflection plate, which are spindle rotationally arranged in, to be clamped in mounting base；
The laser reflects after the focusing of Z axis laser focal adjustment device, then via X-axis laser reflection plate and Y-axis laser reflection plate
Output is marked afterwards.
2. three axis galvanometer according to claim 1, which is characterized in that the Z axis laser focal adjustment device includes focus lamp
Piece, adjusts linking arm and the Z axis mounting base clamped in mounting base is arranged in angle control turn-knob；
The angle control turn-knob setting is on clamping mounting base；
Described adjusting linking arm one end is connected with angle control turn-knob, and the other end is arranged on focusing lens.
3. three axis galvanometer according to claim 2, which is characterized in that the adjusting linking arm includes being arranged in focusing lens
On regulating arm and with the connection slide block that is connected of angle control turn-knob, the regulating arm is hinged on connection slide block.
4. three axis galvanometer according to claim 3, which is characterized in that the focusing lens are equipped with sliding shoe, the tune
Joint arm is connected by sliding shoe with focusing lens.
5. three axis galvanometer according to claim 4, which is characterized in that further include that the fixed gear clamped in mounting base is arranged in
Plate, the fixed baffle are equipped with the through-hole or notch passed through for laser.
6. three axis galvanometer according to claim 4, which is characterized in that the Z axis mounting base is equipped with mobile positive stop strip, institute
Sliding shoe is stated to be movably disposed on mobile positive stop strip under the promotion for adjusting linking arm.
7. a kind of large format imprinter using any one of the claim 1-6 three axis galvanometer, including imprinter ontology, conveying
Device and multiple laser beam marking heads, which is characterized in that
Three axis galvanometers are equipped in the laser beam marking head；
The induction trigger with laser beam marking head mutual induction is provided on the conveyer；
The multiple laser beam marking head is uniformly arranged on imprinter ontology along the direction of conveyer transported material.
8. large format imprinter according to claim 7, which is characterized in that further include that swashing on imprinter ontology is arranged in
Optical controller, the laser controller are connected with laser beam marking head.
9. large format imprinter according to claim 7, which is characterized in that the conveyer includes conveyor belt and conveying
Idler wheel, the conveyor belt are set on the outside of conveying roller.
10. large format imprinter according to claim 7, which is characterized in that the imprinter ontology is equipped with net smoke pipe
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910630202.7A CN110340518A (en) | 2019-07-12 | 2019-07-12 | Three axis galvanometers of one kind and large format imprinter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910630202.7A CN110340518A (en) | 2019-07-12 | 2019-07-12 | Three axis galvanometers of one kind and large format imprinter |
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| Publication Number | Publication Date |
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| CN110340518A true CN110340518A (en) | 2019-10-18 |
Family
ID=68176103
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910630202.7A Pending CN110340518A (en) | 2019-07-12 | 2019-07-12 | Three axis galvanometers of one kind and large format imprinter |
Country Status (1)
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| CN (1) | CN110340518A (en) |
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| CN112171070A (en) * | 2020-09-28 | 2021-01-05 | 广州翔声智能科技有限公司 | Laser marking motion system |
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