CN202595277U - Laser cladding side direction powder delivering machining head - Google Patents
Laser cladding side direction powder delivering machining head Download PDFInfo
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- CN202595277U CN202595277U CN 201220252571 CN201220252571U CN202595277U CN 202595277 U CN202595277 U CN 202595277U CN 201220252571 CN201220252571 CN 201220252571 CN 201220252571 U CN201220252571 U CN 201220252571U CN 202595277 U CN202595277 U CN 202595277U
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Abstract
The utility model provides a laser cladding side direction powder delivering machining head which comprises a laser tube, a powder nozzle and a powder nozzle clamping mechanism, wherein the powder nozzle clamping mechanism comprises a support arm and a parallel link mechanism, the support arm is in the shape of an n with the opening facing left. The support arm is mounted on the laser tube in a supporting mode, the parallel link mechanism comprises a driving rod, an upper driven rod, a lower driven rod, a linkage rod, a clamping rod and a drive unit; the powder nozzle is mounted on the clamping rod; focus of a focused laser beam emitted by the laser tube, rendezvous point of powder beams injected by the powder nozzle and a first vertex are coincided. The laser cladding side direction powder delivering machining head enables light beam energy on a surface of a workpiece to be uniformly distributed, improves powder use efficiency of laser cladding, simplifies control technical requirements of coordinate movement of a workbench, improves simplicity, convenience and flexibity of technological parameter adjustment, and further provides an incident angle which automatically adjusts the powder beams to access a laser cladding molten bath according to actual situation of a machining process, and therefore feasibility of better laser cladding forming quality is achieved.
Description
Technical field
The utility model belongs to the laser process equipment field, is specifically related to a kind of laser melting coating side direction powder feeding processing head.
Background technology
Laser processing technology is to utilize the high-energy-density laser beam material to be carried out the general name of one type of advanced working method of contactless processing.Laser melting coating is to develop one of comparatively active laser processing technology; Its principle is to utilize the method for shop powder or powder feeding to preset metal-powder at substrate surface; And make high energy laser beam focus on substrate surface, and the metal-powder of focussed laser beam irradiation substrate surface, the metal-powder of focal position and substrate surface thin layer melt; Form the molten bath of definite shape and size; Press desired trajectory motion when laser beam foucing with certain speed, solidify rapidly in the molten bath after laser beam is removed, thus the metallic coating that has specific physical, chemistry or mechanical property at the inswept regional cladding last layer of substrate surface laser beam.So-called metal powder laser forming technology combines laser melting and coating technique exactly with RP technique; With the metal-powder is raw material; Adopt the high power laser light melting and coating technique, utilize the quick shaping layering to make thought, produce metal parts with the array configuration of fusing of individual layer constituency and stacked in multi-layers.
At present, laser melting and coating technique mainly contains three kinds of methods according to the mode of metal powder feed: shop powder method, coaxial powder-feeding method and side direction powder-feeding method.Wherein, side direction powder-feeding method laser melting coating system of processing comprises that mainly laser apparatus, light path system, powder feeder, numerical control machine tool and processing are first-class, in order to realize the synchronous powder feeding system in the course of processing, wherein generally comprises a metal powder feed apparatus in the processing head.Metal powder feed apparatus generally is that relative laser drum fixed is installed mode of connection; Be that the angle between powder beam and the laser beam is a fixed in the course of processing; Adjust and install again after this angle need disassemble the two and readjust; Adjustment is very inconvenient, can not in the course of processing, adjust.The patent No. is to disclose a kind of metal powder feed apparatus of using vertical powder-feeding method in 200710159206.9 the Chinese utility model patent " a kind of metal powder feed apparatus of metal powder laser forming system ".This metal powder feed apparatus adopts the mode of side direction laser and vertical powder feeding; It comprises can swing side direction laser drum, laser drum, parallel-crank mechanism, powder jet strut member and perpendicular powder nozzle etc.; Worm and worm-wheel gearing drives can swing the rotation of side direction laser drum; The perpendicular powder nozzle of parallel-crank mechanism drive simultaneously strut member moves up and down; Thereby the angle between the focusing powder beam that focussed laser beam that adjustment side direction laser drum is sent and perpendicular powder nozzle are sent; And parallel-crank mechanism has guaranteed to swing the focusing powder beam that focussed laser beam that the side direction laser drum sends and perpendicular powder nozzle send and has coincided with convergent point all the time, and this processing mode can abbreviate side direction laser, vertical automatic powder feeding system as.But; In the angle process of this metal powder feed apparatus between the focusing powder beam that focussed laser beam that adjustment side direction laser drum is sent and perpendicular powder nozzle are sent, do not consider the change in location of focussed laser beam and the relative workpiece of convergent point of focusing powder beam.In fact; Be in course of adjustment, on the one hand, the input angle of the relative workpiece surface of laser beam can change along with the rotation that can swing the side direction laser drum; Originally be that circle or quadrate beam cross section light spot shape will distort along with the reducing of input angle of the relative workpiece surface of laser beam and be ellipse or rectangle; Thereby make the beam energy of workpiece surface disperse, skewness, influence the powder utilising efficiency of laser melting coating, even can be because energy density deficiency and can't melt shaping; And the variation of amount of distortion can make single track cladding live width inhomogeneous, and the overlap forming quality of multiple tracks cladding is poor; On the other hand; Focussed laser beam can rotate and the generation space change in location along with swinging the side direction laser drum with the convergent point (also being laser beam foucing) that focuses on powder beam; Promptly have change in location with respect to workpiece surface, specifically, on short transverse; This convergent point (also being laser beam foucing) can leave workpiece surface or falls into below the workpiece surface along with swinging the rotation of side direction laser drum; On the horizontal plane direction, this convergent point (also being laser beam foucing) also can squint in the position of workpiece surface, and this horizontal-shift is not to be realized by the whole relative movement of numerical control programming through the relative processing head of workpiece.Because laser melting coating is a kind of Surface-micromachining process; So spatial position change on the relative processing work of this convergent point (also being laser beam foucing) surface; Especially laser beam foucing leaves the situation of workpiece surface, is unallowed for the laser melting and coating process process.In the practical applications; Must utilize worktable to drive workpiece motion s; When making angle between the focusing powder beam that focussed laser beam that adjustment side direction laser drum is sent and perpendicular powder nozzle are sent; Convergent point (also being laser beam foucing) remains unchanged processing work surface height position relatively; Level attitude is according to predetermined programming orbiting motion, and the three-dimensional motion that this requires worktable and Worm and worm-wheel gearing drive that can to swing rotatablely moving of side direction laser drum harmonious, and this angle from the multi-axis numerical control motion control is to be difficult to realization.
The utility model content
The utility model is to the deficiency of above-mentioned prior art; A kind of laser melting coating side direction powder feeding processing head is provided; This laser melting coating side direction powder feeding processing head adopts vertical laser, side direction powder feeding processing mode; Both can effectively adjust the space angle between the focusing powder beam that focussed laser beam and powder jet send, the distored problem of beam cross section light spot shape can not take place again, greatly simplify control techniques requirement the worktable coordinated movement.
The utility model is realized through following technical scheme:
A kind of laser melting coating side direction powder feeding processing head; Comprise laser drum, powder jet and powder jet clamping device; It is characterized in that said laser drum is hollow tubular structure, laser drum is provided with a laser entrance port and a laser emitting mouth; The leaded light light path is installed in the laser drum, and the leaded light light path makes incoming laser beam be transformed to focussed laser beam output;
Said powder jet clamping device comprises a sway brace and a parallel linkage, and said sway brace is the コ word shape, comprises upper branch arm, lower branch arm and is connected upper branch arm and the support arm web member of lower branch arm, and upper branch arm supports and is installed on the wall of the outer-rotor of laser drum;
Said parallel linkage comprises driving lever, last passive bar, following passive bar, gangbar, supporting rod and driver element, and gangbar is between driving lever and supporting rod, and following passive bar is between the lower branch arm of last passive bar and sway brace; The lower branch arm of driving lever and sway brace is articulated in first pin joint, and driving lever and last passive bar are articulated in second pin joint, and the lower branch arm of gangbar and sway brace is articulated in the 3rd pin joint, and gangbar and last passive bar are articulated in the 4th pin joint; Passive bar and driving lever are articulated in the 5th pin joint down, and following passive bar and gangbar are articulated in the 6th pin joint, and supporting rod and last passive bar are connected to the 7th pin joint, and supporting rod is connected to the 8th pin joint with following passive bar; First pin joint, second pin joint and the 5th pin joint conllinear, the 3rd pin joint, the 4th pin joint and the 6th pin joint conllinear, second pin joint, the 4th pin joint and the 7th pin joint conllinear, the 5th pin joint, the 6th pin joint and the 8th pin joint conllinear; The line of the line of the line of second pin joint and the 7th pin joint, the 5th pin joint and the 8th pin joint, first pin joint and the 3rd pin joint is parallel to each other, and the line of the line of the line of first pin joint and second pin joint, the 3rd pin joint and the 4th pin joint, the 7th pin joint and the 8th pin joint is parallel to each other; The extended line of the line of the extended line of the line of the 7th pin joint and the 8th pin joint and first pin joint and the 3rd pin joint intersects at first summit; Driver element is connected with driving lever, is used to promote driving lever and rotates around first pin joint;
Said powder jet is installed on the supporting rod, and powder jet has one or more tapered powder channels, is used for the metal-powder that outside powder feeder is supplied with is ejected and converges; 3 coincidences of the convergent point and first summit of the powder beam of the focus of the focussed laser beam that laser drum is sent, powder jet ejection.
Compared with prior art, the utlity model has following beneficial effect:
(1) the described laser melting coating side direction of the utility model powder feeding processing head is fixedly mounted on the numerically-controlled machine; Adjustment also keeps the laser beam exit direction of laser drum vertical with workpiece surface; And the focus of laser beam is positioned on the workpiece surface just, and the convergent point of the focus of focussed laser beam and powder jet ejection powder beam coincides with a bit on the workpiece surface; Add man-hour; The energy of laser beam makes metal-powder and workpiece surface thin layer melt; Form local molten bath (cladding point),, make workpiece and laser Machining head generation relative movement through the motion of numerically-controlled machine; Cladding point forms the metal-powder cladding layer at the movement locus of workpiece surface, so can realize the processing mode of vertical laser, side direction powder feeding.Compare with the mode of side direction laser, vertical powder feeding; The relative processing work of the laser drum of the utility model is that vertical fixing is installed; The incident attitude of the relative workpiece surface of laser beam and focal height keep immobilizing in the course of processing; The input angle that is the relative workpiece surface of laser beam keeps vertical incidence, and therefore the focusing focus that remains laser beam the distored problem of light spot shape can not occur on workpiece surface; Thereby make the beam energy of workpiece surface be evenly distributed, improve the powder utilising efficiency and the forming quality of laser melting coating.
(2) the described powder jet clamping device of the utility model comes the clamping powder jet through a parallelogram connection-rod structure; The driving lever that driver element promotes the parallelogram connection-rod structure rotates around it the axle rotation; Make the parallelogram sturcutre motion that deforms; Powder jet that is held and parallelogram sturcutre interlock; Make the powder beam of powder jet ejection and the angle between the vertical beam of light change, remain unchanged, overlap on the processing work surface with the focus of laser beam all the time but the motion characteristics of parallelogram sturcutre has guaranteed the convergent point of powder jet ejection powder beam.Compare with the mode of side direction laser, vertical powder feeding; The utility model rotates through a drive unit drives driving lever; Can carry out effective adjustment of space angle between focussed laser beam and the focusing powder beam; The convergent point of focus that can remain laser beam in the process of adjustment and ejection powder beam overlaps and is positioned on the workpiece surface, thereby has simplified the control techniques requirement to the worktable coordinated movement greatly.
(3) the relative processing work of the laser drum of the utility model is vertically installed; The incident attitude of the relative workpiece surface of laser beam and focal height are to keep changeless in the course of processing; Therefore when powder jet that is held and parallelogram sturcutre interlock; When making angle between powder jet ejection powder beam and the vertical beam of light change, corresponding change also takes place in the input angle of the relative workpiece surface of powder beam.On the one hand, having solved other side direction powder-feeding methods adopts the relative laser drum of powder jet to be fixedly connected installation and to cause the difficult problem of adjusting of incident angle between powder beam and the workpiece; On the other hand; Also solved employing side direction laser, vertical automatic powder feeding system causes keeping between powder beam and the workpiece the isogonal defective of vertical incidence; The utility model then can change the incident angle between powder beam and the workpiece easily; That is powder beam gets into the input angle in laser melting coating molten bath; Make and like parameters such as powder sending quantity, powder feeding air-flow sizes, the angle between powder beam and the laser beam to be adjusted to the optimum position according to actual working process parameter easily; Thereby improved simple and easy, the flexibility degree of processing parameter adjustment, also provide according to course of processing practical situation and adjusted this angle automatically to realize the feasibility of better laser cladding forming quality.
The further setting of the utility model is: the outer wall of said laser drum is provided with guide rail movement pair, gear-wheel gear-ring transmission rig and drive-motor; Wherein the guide rail movement pair is upper and lower two; All around arranging in one week of laser drum; The gear-wheel gear-ring transmission rig is fixedly connected with laser drum is concentric around arranging in one week of laser drum; Slide block in the guide rail movement pair is fixedly connected with upper branch arm; Gear in the gear-wheel gear-ring transmission rig is fixedly connected with upper branch arm, and gear ring is connected with toothing, and drive-motor is fixedly mounted on the upper branch arm, and drive-motor links to each other with gear, is used for driving gear and moves along gear ring.
Sway brace in the said powder jet clamping device is installed on the laser drum through two secondary supports of guide rail movement up and down; The gear-wheel gear-ring transmission rig drives sway brace and rotates around the laser drum excircle; The powder jet that is clamped on the powder jet clamping device also rotates around the laser drum excircle thereupon, i.e. revolution motion.The beneficial effect of this revolution motion is; When making, the motion through numerically-controlled machine between workpiece and this laser Machining head relative displacement takes place; Thereby the laser melting coating molten bath forms in the process of metal-powder cladding layer at the travel track of workpiece surface; Powder jet can change the space angle between powder beam incident direction and the laser melting coating molten bath gait of march direction arbitrarily around rotatablely moving of laser drum excircle; Thereby easily according to actual working process parameter; Like parameters such as laser melting coating gait of march, powder sending quantity, powder feeding air-flow sizes, the space angle that powder beam is got into the laser melting coating molten bath is adjusted to best angle easily, makes the forming quality of laser melting coating better; In addition; In the time of can also being implemented in the laser melting coating of march line tracking through numerical control programming control; Powder beam gets into the laser melting coating molten bath with the fixed space angle all the time; This laser melting coating for curved path is very good, helps guaranteeing curved path laser melting coating quality of stability.Simultaneously, when powder jet was done revolution motion in the utility model, laser drum was fixed, thereby can keep light path system motionless all the time, had reduced the unnecessary additional movement of laser optical path, had further guaranteed the stability and the forming quality of laser beam.
The further setting of the utility model is: the laser entrance port of laser drum is arranged on the sidewall of laser drum.With laser beam from the laser drum top incident mode compare, laser incident from the side can be compressed the transmission range of laser optical path, reduces the power loss of laser beam in transmission course.
The further setting of the utility model is: said driver element is an electric expansion bar, and the inboardend of electric expansion bar is hingedly mounted on the sway brace, and the flexible end of electric expansion bar is fixedly mounted on the driving lever.So be provided with; Stretching motion through the electric expansion bar; Can drive driving lever and rotate around its rotating shaft, thereby realize the automatic control to the adjusting of driving lever corner, the utility model is not limited to this certainly; Said driver element also can be a cylinder, perhaps adopts modes such as manual regulation to regulate the corner of driving lever.
The further setting of the utility model is: said parallel linkage is two covers, and two cover parallel linkages connect through a plurality of connecting rods; Said powder jet is installed between two supporting rods.So be provided with, can make that the parallel linkage operation is more steady.
The further setting of the utility model is: said powder jet and supporting rod are structure as a whole.So be provided with, can make the designs simplification of parallel linkage.
Description of drawings
Fig. 1 is the structure iron of the said laser melting coating side direction of the utility model powder feeding processing head;
Fig. 2 is the structure iron of powder jet clamping device;
The implication of each label is following among the figure:
Laser drum-1, powder jet-2, sway brace-3, driving lever-5 is gone up passive bar-6, following passive bar-7; Supporting rod-8, gangbar-9, focussed laser beam-10, the first summit-11, laser emitting mouth-12, powder beam-13; Gear ring-14, guide rail movement pair-15, gear-16, drive-motor-17, laser entrance port-18, electric expansion bar-19; Upper branch arm-31, lower branch arm-32, web member-33, the first pin joint-21, the second pin joint-22, the three pin joints-23; The 4th pin joint-24, the five pin joints-25, the six pin joints-26, the seven pin joints-27, the eight pin joints-28.
Embodiment
This embodiment is can do spinning motion to powder jet, can be the embodiment of revolution motion again, below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Like Fig. 1, shown in 2, the utility model provides a kind of laser melting coating side direction powder feeding processing head, comprises laser drum 1, powder jet 2 and powder jet clamping device.
Said laser drum 1 is hollow tubular structure; Laser drum 1 is provided with a laser entrance port 18 and a laser emitting mouth 12; Leaded light light path (not shown) is installed in the laser drum 1, and the leaded light light path makes focusing focussed laser beam 10 outputs for outgoing vertically downward of from the laser entrance port 18 side incident transforming lasers.
The powder jet clamping device comprises a sway brace 3 and a parallel linkage; Sway brace 3 supports and is installed on the laser drum 1; Said sway brace 3 is the コ word shape; Comprise upper branch arm 31, lower branch arm 32 and be connected the support arm web member 33 of upper branch arm 31 and lower branch arm 32, upper branch arm 31 supports and is installed on the wall of the outer-rotor of laser drum 1; Lower branch arm 32 links to each other with parallel linkage.Said parallel linkage comprises driving lever 5, upward passive bar 6, down passive bar 7, gangbar 9, supporting rod 8 and driver element, and gangbar 9 is between driving lever 5 and supporting rod 8, and following passive bar 7 is between last passive bar 6 and lower branch arm 32; Driving lever 5 is articulated in first pin joint 21 with lower branch arm 32, and driving lever 5 is articulated in second pin joint 22 with last passive bar 6, and gangbar 9 is articulated in the 3rd pin joint 23 with lower branch arm 32, and gangbar 9 is articulated in the 4th pin joint 24 with last passive bar 6; Following passive bar 7 is articulated in the 5th pin joint 25 with driving lever 5, and following passive bar 7 is articulated in the 6th pin joint 26 with gangbar 9, and supporting rod 8 is connected to the 7th pin joint 27 with last passive bar 6, and supporting rod 8 is connected to the 8th pin joint 27 with following passive bar 7; First pin joint 21, second pin joint 22 and the 5th pin joint 25 conllinear; The 3rd pin joint 23, the 4th pin joint 24 and the 6th pin joint 26 conllinear; Second pin joint 22, the 4th pin joint 24 and the 7th pin joint 27 conllinear, the 5th pin joint 25, the 6th pin joint 26 and the 8th pin joint 28 conllinear; The line of the line of the line of second pin joint 22 and the 7th pin joint 27, the 5th pin joint 25 and the 8th pin joint 28, first pin joint 21 and the 3rd pin joint 23 is parallel to each other, and the line of the line of the line of first pin joint 21 and second pin joint 22, the 3rd pin joint 23 and the 4th pin joint 24, the 7th pin joint 27 and the 8th pin joint 28 is parallel to each other; The line of the line of the 7th pin joint 27 and the 8th pin joint 28 and first pin joint 21 and the 3rd pin joint 23 is non-intersect, and both extended lines intersect at first summit 11; Concretely; It is 4 compositions of A, B, C, D, one rhomboid among Fig. 1; B, E, G, 4 of H form a rhomboid, and B, D, E, 4 of F form a rhomboid, and A, C, E, 4 of F form a rhomboid; Line segment AC and line segment GH are non-intersect, and both extended lines are given an I mutually.Driver element is connected with driving lever 5; Be used to promote driving lever 5 and rotate motion so that parallelogram sturcutre deforms around first pin joint 21.Each wherein above-mentioned parts are hinged to be realized through mode of connection such as a rotating shaft or pins,
Said powder jet 2 is installed on the supporting rod 8, such as can being installed on the supporting rod 8 through rivet, with realize between the two be rigidly connected powder jet 2 and supporting rod 8 interlocks.Powder jet 2 has one or more tapered powder channels, and effect is that the metal-powder that outside powder feeder is supplied with is ejected, and tapered powder channel makes the metal-powder bundle 13 that ejects converge.The utility model will be according to parameters such as the powder sending quantity of powder jet 2, powder feeding air-flow sizes; The installation site of design powder jet 2 on supporting rod 8; Make the convergent point of the powder beam that powder jet 2 sprays be positioned at first summit 11 just; Size through the design sway brace guarantees that the focus of the focussed laser beam 10 that laser drum is sent also is positioned at first summit 11 just simultaneously; Be 11 3 coincidences of the convergent point and first summit of powder beam of focus, powder jet 2 ejections of the focussed laser beam 10 that sends of laser drum 1; Sway brace is the コ word shape in the utility model; By upper branch arm, lower branch arm be connected upper branch arm and the support arm web member of lower branch arm is formed, after the pin joint of parallel linkage size and parallel linkage and lower branch arm was confirmed, the position of first summit, 11 relative lower branch arms had just been fixed; Therefore for different laser bundle focal position, only need the concrete size of appropriate design upper branch arm, lower branch arm and support arm web member just can make the focus of focussed laser beam 10,11 3 coincidences of the convergent point and first summit of powder beam that powder jet 2 sprays.
For the structure that makes parallel linkage is easier, powder jet 2 can be structure as a whole with supporting rod 8, and promptly powder jet 2 is hinged with down passive bar 7 with last passive bar 6 respectively.
The driver element that links to each other with driving lever 5 in the present embodiment is an electric expansion bar 19, and the inboardend of electric expansion bar 19 is hingedly mounted on the lower branch arm 32, and the flexible end of electric expansion bar 19 is fixedly mounted on the driving lever 5.Electric expansion bar 19 is done stretching motion; Can drive driving lever 5 rotates around first pin joint 21; According to the binding feature of a plurality of rhomboid in the parallel rod structure, the position on first summit 11 is a fixed vertices in the parallel linkage, and its position does not change along with the motion of driving lever 5; Therefore by the powder jet 2 of supporting rod 8 clampings with driving lever 5 interlocks the time, the convergent point of the powder beam 13 of powder jet 2 ejections is constant all the time; Thereby make the powder beam 13 of powder jet 2 ejections and the angle between the vertical focusing laser beam 10 change.
In order to make the parallel linkage operation more steady, said parallel linkage can be two covers, and two cover parallel linkages connect through a plurality of connecting rods; Said powder jet 2 is installed between two supporting rods 8.
For powder jet can be rotated around the laser drum excircle; The excircle of the said laser drum 1 of the utility model is provided with secondary 15, the gear-wheel gear-ring transmission rigs of guide rail movement and a drive-motor 17; Wherein guide rail movement secondary 15 is upper and lower two; All around arranging in 1 one weeks of laser drum, gear-wheel gear-ring transmission rig and laser drum 1 concentric the fixed connection are around arranging in 1 one weeks of laser drum; Slide block in the guide rail movement secondary 15 is fixedly connected with upper branch arm 31; The gear-wheel gear-ring transmission rig comprises a gear 16 and a gear ring 14; Gear 16 is installed on the upper branch arm 31 through bearing fixing, and gear ring 14 is connected with a joggle with gear 16, and drive-motor 17 is fixedly mounted on the upper branch arm 31; Drive-motor 17 links to each other with gear 16, is used for driving gear 16 and moves along gear ring 14.
Two guide rail movements secondary 15 play the effect of supported arm 3, and for rotatablely moving of sway brace 3 movement locus are provided simultaneously.Drive-motor 17 driving gears 16 rotate; Gear ring 15 and gear 16 engaged transmission because gear ring 15 is fixed with laser drum 1, rotate around gear ring 15 so gear 16 drives sway brace 3; When sway brace 3 rotates; Drive parallel linkage and powder jet 2 and together move, thereby realized the function that powder jet rotates around the laser drum excircle, i.e. revolution motion.
The working process of the said laser melting coating side direction of the utility model powder feeding processing head is:
Laser melting coating side direction powder feeding processing head is fixedly mounted on the numerically-controlled machine, and adjustment also keeps the outgoing focussed laser beam 10 of laser drum 1 vertical with workpiece surface, and the focus of focussed laser beam 10 is positioned on the workpiece surface just; Start electric expansion bar 19; When electric expansion bar 19 is done stretching motion; Driving driving lever 5 rotates around first pin joint 21; Driving lever 5 drives powder jet 2 and rotates, and a plurality of parallelogram sturcutres all deform, and can focus on the adjustment of space angle between focussed laser beam 10 and the focusing powder beam 13; Start drive-motor 17; Drive-motor 17 driving gears 16 rotate; Gear ring 15 and gear 16 engaged transmission, gear 16 drives sway brace 3 and rotates, when sway brace 3 rotates; Drive powder jet 2 and do revolution motion, can carry out the adjustment of the angle between powder beam 13 incident directions and the laser melting coating molten bath gait of march direction around laser drum 1; The energy of focussed laser beam 10 makes metal-powder and workpiece surface thin layer melt; Form local molten bath; Through the motion of numerically-controlled machine, make workpiece and laser Machining head generation relative movement, cladding point forms the metal-powder cladding layer at the movement locus of workpiece surface.
The above is the preferred embodiment of the utility model, and all equivalent variations of being done according to the utility model claim all should belong to the protection domain of the utility model.
Claims (6)
1. laser melting coating side direction powder feeding processing head; Comprise laser drum, powder jet and powder jet clamping device; It is characterized in that said laser drum is hollow tubular structure, laser drum is provided with a laser entrance port and a laser emitting mouth; The leaded light light path is installed in the laser drum, and the leaded light light path makes incoming laser beam be transformed to focussed laser beam output;
Said powder jet clamping device comprises a sway brace and a parallel linkage, and said sway brace is the コ word shape, comprises upper branch arm, lower branch arm and is connected upper branch arm and the support arm web member of lower branch arm, and upper branch arm supports and is installed on the wall of the outer-rotor of laser drum;
Said parallel linkage comprises driving lever, last passive bar, following passive bar, gangbar, supporting rod and driver element, and gangbar is between driving lever and supporting rod, and following passive bar is between the lower branch arm of last passive bar and sway brace; The lower branch arm of driving lever and sway brace is articulated in first pin joint, and driving lever and last passive bar are articulated in second pin joint, and the lower branch arm of gangbar and sway brace is articulated in the 3rd pin joint, and gangbar and last passive bar are articulated in the 4th pin joint; Passive bar and driving lever are articulated in the 5th pin joint down, and following passive bar and gangbar are articulated in the 6th pin joint, and supporting rod and last passive bar are connected to the 7th pin joint, and supporting rod is connected to the 8th pin joint with following passive bar; First pin joint, second pin joint and the 5th pin joint conllinear, the 3rd pin joint, the 4th pin joint and the 6th pin joint conllinear, second pin joint, the 4th pin joint and the 7th pin joint conllinear, the 5th pin joint, the 6th pin joint and the 8th pin joint conllinear; The line of the line of the line of second pin joint and the 7th pin joint, the 5th pin joint and the 8th pin joint, first pin joint and the 3rd pin joint is parallel to each other, and the line of the line of the line of first pin joint and second pin joint, the 3rd pin joint and the 4th pin joint, the 7th pin joint and the 8th pin joint is parallel to each other; The extended line of the line of the extended line of the line of the 7th pin joint and the 8th pin joint and first pin joint and the 3rd pin joint intersects at first summit; Driver element is connected with driving lever, is used to promote driving lever and rotates around first pin joint;
Said powder jet is installed on the supporting rod, and powder jet has one or more tapered powder channels, is used for the metal-powder that outside powder feeder is supplied with is ejected and converges; 3 coincidences of the convergent point and first summit of the powder beam of the focus of the focussed laser beam that laser drum is sent, powder jet ejection.
2. laser melting coating side direction powder feeding processing head according to claim 1; It is characterized in that; The outer wall of said laser drum is provided with guide rail movement pair, gear-wheel gear-ring transmission rig and drive-motor, and said guide rail movement pair is upper and lower two, all around arranging in one week of laser drum; The gear-wheel gear-ring transmission rig is fixedly connected with laser drum is concentric around arranging in one week of laser drum; Slide block in the guide rail movement pair is fixedly connected with upper branch arm; Gear in the gear-wheel gear-ring transmission rig is fixedly connected with upper branch arm, and gear ring is connected with toothing, and drive-motor is fixedly mounted on the upper branch arm, and drive-motor links to each other with gear, is used for driving gear and moves along gear ring.
3. laser melting coating side direction powder feeding processing head according to claim 2 is characterized in that the laser entrance port is arranged on the sidewall of laser drum.
4. laser melting coating side direction powder feeding processing head according to claim 1 is characterized in that said driver element is an electric expansion bar, and the inboardend of electric expansion bar is hingedly mounted on the lower branch arm, and the flexible end of electric expansion bar is fixedly mounted on the driving lever.
5. laser melting coating side direction powder feeding processing head according to claim 4 is characterized in that said parallel linkage is two covers, and two cover parallel linkages connect through a plurality of connecting rods; Said powder jet is installed between two supporting rods.
6. laser melting coating side direction powder feeding processing head according to claim 5 is characterized in that said powder jet and supporting rod are structure as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220252571 CN202595277U (en) | 2012-05-17 | 2012-05-17 | Laser cladding side direction powder delivering machining head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220252571 CN202595277U (en) | 2012-05-17 | 2012-05-17 | Laser cladding side direction powder delivering machining head |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703895A (en) * | 2012-05-17 | 2012-10-03 | 温州大学 | Laser cladding lateral powder feed processing head |
| CN103436881A (en) * | 2013-08-16 | 2013-12-11 | 华南师范大学 | Multi-degree of freedom powder feeding device |
| CN106835125A (en) * | 2017-03-10 | 2017-06-13 | 浙江工业大学 | A kind of adjustable laser coaxial powder feeding nozzle of connecting rod lever-type structure powder convergent point |
| CN108637572A (en) * | 2018-06-05 | 2018-10-12 | 昆山宝锦激光拼焊有限公司 | A kind of quick positioning welding platform of skylight |
| CN116024564A (en) * | 2022-11-18 | 2023-04-28 | 广东省科学院智能制造研究所 | Angle-adjustable laser processing head for processing inner surface |
-
2012
- 2012-05-17 CN CN 201220252571 patent/CN202595277U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703895A (en) * | 2012-05-17 | 2012-10-03 | 温州大学 | Laser cladding lateral powder feed processing head |
| CN102703895B (en) * | 2012-05-17 | 2013-12-25 | 温州大学 | Laser cladding lateral powder feed processing head |
| CN103436881A (en) * | 2013-08-16 | 2013-12-11 | 华南师范大学 | Multi-degree of freedom powder feeding device |
| CN103436881B (en) * | 2013-08-16 | 2016-04-27 | 华南师范大学 | A kind of multiple degree of freedom powder conveyer |
| CN106835125A (en) * | 2017-03-10 | 2017-06-13 | 浙江工业大学 | A kind of adjustable laser coaxial powder feeding nozzle of connecting rod lever-type structure powder convergent point |
| CN108637572A (en) * | 2018-06-05 | 2018-10-12 | 昆山宝锦激光拼焊有限公司 | A kind of quick positioning welding platform of skylight |
| CN116024564A (en) * | 2022-11-18 | 2023-04-28 | 广东省科学院智能制造研究所 | Angle-adjustable laser processing head for processing inner surface |
| CN116024564B (en) * | 2022-11-18 | 2023-11-21 | 广东省科学院智能制造研究所 | Angle-adjustable laser processing head for processing inner surface |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121212 Effective date of abandoning: 20131225 |
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| RGAV | Abandon patent right to avoid regrant |