CN108161202A - For single working end swing type electrode automatic grinding device of resistance spot welding - Google Patents

Abstract

The invention discloses a kind of single working end swing type electrode automatic grinding devices for resistance spot welding, including stent and the working end frame body being arranged on stent, working end frame body is internally provided with working end and reconditioning angle compensation system, electrode positioning mechanism when being equipped on the outside of the frame body frame of working end for electrode dressing is equipped with working end frame body relocation mechanism between stent and working end frame body；Reconditioning is driven power input gear, spline gear, splined shaft, cage, gear shaft and knife rest by alternating current generator with combining the knife rest gear of cutlery successively when cutting；The cutting displacement of cutlery, leading screw ball nut, connecting plate, fulcrum bearing and working end are driven by servo motor successively during reconditioning；Reconditioning angle compensation system includes stepper motor, worm and gear, bolt draw bar, link block and axis pin etc..The present invention, which has, moves the positioning of electrode surface micro reconditioning, reconditioning the angle gradually incremental precise positioning ability of compensation and electrode dressing position.

Description

For single working end swing type electrode automatic grinding device of resistance spot welding

Technical field

The present invention relates to the special process equipments of welding electrode reconditioning during spot-welding technology, more specifically, this hair It is bright be about spot-welding technology during a kind of electrode dressing for being not only suitable for linear motion-type soldering turret, be also applied for swing type weldering Single working end swing type electrode automatic grinding device of clamp electrode reconditioning, hereinafter referred to as electrode grinding device；In other words, it is of the invention Electrode grinding device both can carry out automatic grinding to the welding electrode coaxially to work, also can be to the swing type soldering turret of non-coaxial work Welding electrode carries out automatic grinding.

Background technology

During spot-welding technology, electrode working surface is acted on by the harsh cycle operation load such as high temperature and high pressure, electrode The ingredient and diameter of working surface, the contact area between electrode surface and workpiece surface, electrode surface and workpiece surface connect It gets an electric shock to hinder and changes the solder joints of product with separating process demand direction change of persistently supporting or opposing, a series of variation dynamics such as thermal contact resistances Quality.In order to reduce the adverse effect of the essence caused by electrode surface state changes excessive butt welding point mass, adopted in production The mode of regular reconditioning electrode working surface is taken, with by the way that electrode diameter and electrode surface state are limited wave in a certain range The dynamic precautionary measures reach and maintain the metastable purpose of quality of welding spot dispersion.

Electrode grinding device, which is said good-bye, moves two class of coping device and automatic grinding device；Because of product type difference, price variance great disparity.Electricity Pole reconditioning is mainly intended reaching following purpose：First, increased electrode working surface diameter is restored to its initial set value, i.e., The conductive surface diameter of electrode was limited in the electrode dressing phase twice and is fluctuated, for ensure weld nugget forming process in feed with The relative equilibrium of heat-conducting section area creates necessary condition；Second, removal electrode working surface formed in pinpoint welding procedure it is each Two electrode working surfaces including alloy-layer and attachment nitride layer etc., and are trimmed to and workpiece table by the non-electrode original material of class simultaneously Face is parallel, to ensure the contact resistance between electrode working surface and workpiece to greatest extent and effectively feed sectional area limited In the range of fluctuate, reduce all kinds of welding interface conditions fluctuation and mitigate temperature field transfer etc. butt welding point mass generate unfavorable shadow It rings.Manual coping device need to should ensure to be placed in two electrode working surface diameters of spatiality when using by the experience of people Consistency and correspondence, while also to ensure that thinning surface is in the parallel of the workpiece surface of spatiality with respect to this fashion Relationship is the work with suitable difficulty.Existing electrode automatic grinding device is primarily present following deficiency：

(1) by upper and lower electrode working surface to be grinding coaxially jointly clamping one both sides with cutting edge parallel to each other, can be around The cutlery rotated in situ, relative constant electrode pressure is acted on always on the cutting edge of both sides and by cutting edge during electrode dressing It is existing electrode grinding device work that three parameters such as rotating speed, electrode pressure and reconditioning time, which codetermine each reconditioning cutting output of electrode etc., When common feature, and thus generate as described in the 2nd section it is various it is negative nature machining attributes.

(2) all kinds of negative attributes that existing electrode automatic grinding device is determined by common processing characteristic：First, cutlery is in fixed bit It puts and is rotated around fixing axle, the axis of rotation of cutlery is overlapped with electrode axis, the theory locus tape one of electrode working surface processing Helix angle can not ensure parallel between two electrode surfaces after reconditioning and workpiece surface；Second, to reduce dynamic load pair The adverse effect of cutting edge impact stablizes the work side for establishing rear edge eloquence and starting rotation using electrode pressure on cutting edge mostly Formula, i.e. cutting edge tie up under very large electrode pressure effect and carry startup and rotating speed and increase to design work rotating speed, counter blade by zero moment The percussion of mouth is very big；Third, from electrode outer diameter to the cutting linear velocity of electrode axle center cutting edge, there is by V=Vmax to V =0 variation, the i.e. cutting linear velocity at electrode outer diameter position and cutting acceleration are maximum, most strong to the percussion of cutting edge； The cutting linear velocity of electrode axis part is zero, and cutting edge centre has no shear action to electrode surface, and the position is to be cut Stripping between electrode material and electrode surface is that cutting edge rotation rolls the synthesis result that superposition is torn with rotation, to electrode The uniformity and conductive capability of surface electrode material and cutting edge etc. have certain destruction；Fourth, in order to remove electrode axis The metal to be cut of center portion position, it is contemplated that between the cooperation needed for the rotation of electrode repetitive positioning accuracy error and cutting edge certainly existed The factors such as gap, land length design is upper must to pass through axle center, the local cutting edge beyond axle center bear during the cutting process the traditional method of indicating the pronunciation of a Chinese character with The bad working environments such as hard squeeze, it is totally unfavorable to cutting edge working life；Fifth, resetting error precision will cause stress center Offset, electrode dressing surface opposite piece surface will to be made to form certain processing using fit clearance inclined for Center of Pressure offset Angle exacerbates the nonparallelism between electrode working surface and workpiece surface, and then to the relatively steady of electrode feed area of section Fixed and quality of welding spot etc. forms adverse effect；Sixth, since the impact stress that cutlery is born during electrode dressing is very big, The sharpness of cutlery cutting edge is limited, while also limits the small bite cutting power of cutlery cutting edge, excessively cutting is known as Absolute main body in each electrode dressing amount.

(3) it is each using the matching relationship of three parameter such as reconditioning time decision reconditioning quality rather than by reconditioning Bit andits control Reconditioning cutting output, it is difficult to the effectively excessive cutting of coordination electrode material.

(4) existing electrode automatic grinding device is not because having angle automatic compensation function step by step, in reconditioning swing type soldering turret During electrode, the unevenness after meeting gradual magnification reconditioning between electrode working surface and workpiece surface.

Invention content

The present invention overcomes the above-mentioned deficiency of existing electrode grinding device, novel electrode coping device takes following working method： First, during entire reconditioning, the two electrodes end face between soldering turret top electrode holding rod and the small holding rod of electrode at cooperation always Annulus is bonded with electrode positioning mechanism upper backup pad, ensures the datum plane during electrode dressing；At the same time, detent mechanism On electrode clamping mechanism again simultaneously to electrode dressing when axial benchmark provide guarantee；It is cut second, positioning is taken to move with micro The mode of cutting carries out the reconditioning of electrode, and electrode dressing process is unrelated with electrode pressure；Third, to the electrode dressing of swing type soldering turret, The characteristics of being gradually shortened according to electrode with reconditioning number, gradually incremental compensating electrode reconditioning angle, to ensure the electrode after reconditioning Working surface is in due course parallel in pinpoint welding procedure with workpiece surface；Fourth, reconditioning working angles are by cylindrical milling cutter and cambered surface The combination cutlery that shape milling cutter or truncated cone-shaped milling cutter are composed by revolve round the sun+high speed rotation in the form of realized respectively to electrode working surface Milling reconditioning is carried out with adjacent side.

In order to solve the above-mentioned technical problem, the present invention proposes that a kind of single working end for lifetime of resistance spot welding electrode reconditioning is swung Formula coping device, including working end frame body stent and setting on the bracket, the working end frame body is internally provided with working end With reconditioning angle compensation system, the electrode positioning mechanism when working end frame body frame outside is equipped with for electrode dressing, Working end frame body relocation mechanism is equipped between the stent and the working end frame body；The working end frame body is group frame knot Configuration formula, the working end frame body includes left frame, frame body upper plate, correct frame and frame body lower plate, and is fastened by check bolt Assembling；Left guide shaft, right guide shaft, ball-screw and spline are equipped between the frame body upper plate of the working end frame body and frame body lower plate Axis, one end of the ball-screw are connected with the output shaft of retarder in servo motor and reducer group body, the ball wire The other end of thick stick is equipped with ball-screw bearing holder (housing, cover) part, and ball nut, the bottom end of the splined shaft are equipped on the ball-screw Equipped with spline gear, the splined shaft is equipped with cage, between the axial splines axis hole and the splined shaft inside the cage For clearance fit, the cage has three semiaxis of radial equipartition；The working end includes working end ontology and the ball The fixed connecting plate of nut, the fulcrum bearing being sleeved on the left guide shaft and right guide shaft slided respectively, the working end ontology Both sides be equipped with hanging scroll, the bottom end of two fulcrum bearings is equipped with hanging scroll through-hole, described two fulcrum bearings and the working end sheet Slide hinged for axis hole between hanging scroll on body, described two fulcrum bearings are bolted to connection with the connecting plate；It is described The lower surface of frame body lower plate is installed with the assembly of alternating current generator and retarder, and the output shaft of the speed reducer is described in It is equipped with power to the top of the frame body lower plate, the output shaft of the speed reducer after the through-hole reserved in frame body lower plate and inputs tooth Wheel, the power input gear are engaged with the spline gear；Cage gear assembly and knife rest are equipped in the working end ontology Gear assembly；The cage gear assembly includes the gear shaft that coordinate with cage, in the endoporus of the gear shaft equipped with it is described Three embeded slots of three semiaxis cooperation of cage, three semiaxis are fitted into are packed into three embeded slots respectively；The knife rest Gear assembly includes knife rest gear, tool-post structure and combination cutlery；The combination cutlery includes cutlery axis, one end of the cutlery axis Equipped with the shaft shoulder, it is equipped with to the other end of the cutlery axis cutlery left end bearing group, the successively from the inside of the shaft shoulder of the cutlery axis One cutlery, the second cutlery, cutlery right end bearing group, bevel pinion, washer, elastic washer and nut；The bevel pinion and institute It states and passes through key connection between cutlery axis；The knife rest gear is engaged with the gear shaft；The side wall of the knife rest gear is equipped with Tool-post structure mounting hole is the reserved rectangular space of cutlery revolution inside the tool-post structure, sets that there are two be used on the tool-post structure The bearing hole of installation combination cutlery, the combination cutlery are mounted on described by cutlery left end bearing group and cutlery right end bearing group In tool-post structure, the cutlery rotary space is a rectangular space, and the first cutlery and the second cutlery of the combination cutlery are located at institute State in rectangular space, the rectangular space be more than with it is described combine the first cutlery and the second cutlery revolution in cutlery when shared sky Between；The top and bottom of the knife rest gear are equipped with the shaft shoulder, and angular contact ball bearing, the lower end shaft shoulder are equipped at the shaft shoulder of upper end Place is equipped with lower angular contact ball bearing, and installation is coordinated on the outer shroud of the upper angular contact ball bearing, and there are one bevel gear wheels；It is described It is engaged between bevel pinion described in bevel gear wheel；The reconditioning angle compensation system includes and the fixed stepping of the connecting plate Motor is coaxially arranged with a worm screw with the stepper motor output shaft, and the worm screw drives a worm gear, the centre bore of the worm gear For threaded hole, a thread is equipped in the threaded hole；The shaft end of the worm gear lower part is equipped with Rolling bearing, the ball The macropore on axle sleeve top and the shaft end tight fit of the worm gear lower part are installed；The lower axial end cooperation of the ball is assemblied in It is fixed on the inner ring of the ball bearing group on the connecting plate；The Rolling bearing bearing group is by clamp spring axial limiting；Institute State thread lower end pass through the ball interior bone after to the connecting plate lower section, the thread Bottom end is fixed with a link block；It is hinged between the link block and the working end ontology using axis pin；The electrode localization machine Structure includes two installation base plates, and the upper and lower of two installation base plates is respectively equipped with that two nested structures are identical and the electrode of arrangement symmetrical above and below Positioning component, the electrode positioning component include support plate, cylinder mounting plate and cylinder, the support plate and two installation base plates It is connected, clamp system installing plate is fixed in the support plate, the support plate is equipped with electrode axial locating surface, the cylinder Installing plate is fixed with one of installation base plate, and the cylinder rod of the cylinder is connected with adjustment connector, T-shaped clamping screw and cunning in turn Dynamic push rod, the slide push rod are equipped with guide groove, and the clamp system installing plate is equipped with feather key, and the feather key is embedded in institute It states in the guide groove of slide push rod, to limit the slide push rod in the clamp system installing plate slide over side walls, the cunning The end of dynamic push rod is equipped with idler wheel；During electrode dressing, when electrode in place when, the big holding rod of two lateral electrodes and small holding rod junction Annulus it is sturdy with the both side surface of plate supported on both sides respectively, the idler wheel in two sets of electrode positioning components is in slide push rod It is contacted respectively with powering on the side of minimum holding rod and the lower small holding rod of electrode under promotion；The working end frame body relocation mechanism includes two The identical connection component of nested structure, the connection component include fixed hold-down support on the bracket, the hold-down support Be equipped with guide shaft, be set on the guide shaft with the fixed floating support saddle of working end frame body, on the guide shaft and positioned at institute The upper and lower ends for stating floating support saddle are equipped with compression spring.

Further, the present invention is used for single working end swing type electrode automatic grinding device of resistance spot welding, wherein, the tooth There are one cage cover boards for the top dress of wheel shaft.

The front and both sides of the working end frame body are equipped with integral type cover plate.

First cutlery is cylindrical cutlery, and the helical angle ω 1 of a plurality of spiral line type cutting edge is identical, the cylinder sword Diameter D1, the cutting edge quantity n1 of tool and the relationship of helical angle ω 1 are as follows：

The geometric parameter of the first cutlery cutting edge includes width e after anterior angle α, sword thickness f, dorsal horn σ and sword, the parameter The relationship of value range and spot welding object material is as follows：

Second cutlery can be arc surfaced cutlery, and the surface of the arc surfaced cutlery is outer convex globoidal or imploded arcs One kind in face；The cambered surface radius kissing of welding tip side of the cambered surface radius of the arc surfaced cutlery with intending cutting reconditioning It closes；The arc surfaced cutlery includes the identical cutting edge of several geometries；The structure size of the arc surfaced cutlery includes sword Have outside diameter D2, cutlery end diameter D3 and cutting edge quantity n2；The value range of the structure size is with intending cutting reconditioning The relationship of electrode diameter R and the second cutlery cutting edge helical angle ω 2 are as follows：

Second cutlery can also be truncated cone-shaped cutlery, the cone angle of the truncated cone-shaped cutlery and the electrode for intending cutting reconditioning The cone angle of work end side surface matches；The truncated cone-shaped cutlery includes the identical cutting edge of several geometries；The truncated cone-shaped The structure size of cutlery includes cutlery outside diameter D2, cutlery end diameter D3 and cutting edge quantity n3；The structure size takes The relationship for being worth electrode diameter R and the second cutlery cutting edge back rake angle ε of the range with intending cutting reconditioning is as follows：

The geometric parameter of the second cutlery cutting edge includes anterior angle λ, dorsal horn δ, sword thickness b and sword thickness dorsal horn θ；The anterior angle λ, The relationship of dorsal horn δ, sword thickness b and sword thickness dorsal horn θ are as follows：

Compared with prior art, the beneficial effects of the invention are as follows：

(1) by the structure combination of cutting system of the present invention, make combination cutlery in knife rest gear process of revolution, Also simultaneously using the axis of cutlery axis as axis high speed rotation, and combination cutlery is driven jointly in a manner of revolution+high speed rotation to electrode The cutting characteristic of reconditioning can be inherently eliminated in known technology after the electrode working surface reconditioning caused by operation principle inevitable Existing helix angle is conducive to improve quality of welding spot.

(2) by cutting displacement mobile system to electrode dressing displacement and the control of cutting speed are cut when, electrode can be made Each cutting reconditioning quality and cutlery cutting edge bite by the accurate control of cutting system, can effectively reduce to electrode Excessively cutting and raising cutlery working life.

(3) by reconditioning angle compensation system, when making swing type soldering turret electrode dressing, reconditioning angle compensation system can be passed through Suitable working end reconditioning angle change gradually carries out micro compensation, it is ensured that electrode working surface and workpiece surface after each reconditioning It is in due course parallel, effective feeding capability of the electrode surface to workpiece surface is improved, is conducive to improve quality of welding spot and reduce electrode to disappear Consumption.

(4) by what multiple-cutting-edge combined cutlery cutlery is used and combined with+electrode the cutting way of high speed rotation that revolves round the sun, in phase Under the conditions of electrode cutting output, the cutting load of cutting edge is greatly lowered, and can improve the reconditioning of cutlery service life and electrode surface Quality, and reduce the use cost of cutlery.

(5) by the use of reconditioning detent mechanism, by robot or artificially generated repetition essence when can avoid electrode dressing Influence of the error to electrode work surface location precision is spent, cutlery cutting edge is made to work under the cutting stress of relative equilibrium always, It is beneficial to improve cutlery working life and quality of welding spot.

(6) by the relocation mechanism, work end frame can be made to have certain flying ability, met needed for robot Adaptability.

Description of the drawings

Fig. 1-1 is main view of the present invention for single working end swing type electrode automatic grinding device working end of resistance spot welding Figure；

Fig. 1-2 is the left view of electrode grinding device working end shown in Fig. 1-1；

Fig. 1-3 is the right view of electrode grinding device working end shown in Fig. 1-1；

Fig. 1-4 is the vertical view of electrode grinding device working end shown in Fig. 1-1；

Fig. 2-1 is the structural principle front view of single working end swing type electrode grinding device working end of the invention；

Fig. 2-2 is the vertical view of electrode grinding device working end shown in Fig. 2-1；

Fig. 3-1 is the structural principle front view of single working end swing type electrode grinding device cutter holder assembly of the invention；

Fig. 3-2 is the sectional view of Fig. 3-1 electrode grinding device knife rest gear assembly B-B sections；

Fig. 3-3 is the vertical view of Fig. 3-1 electrode grinding device knife rest gear assemblies；

Fig. 4-1 is the front view of single working end swing type electrode grinding device cutter holder assembly of the invention；

Fig. 4-2 is the sectional view of Fig. 4-1 electrode grinding device cutter holder assemblies；

Fig. 5-1 is the sectional view of swing type electrode grinding device truncated cone-shaped combination cutlery in single working end of the invention；

Fig. 5-2 is the sectional view of electrode grinding device cambered surface combination cutlery of the present invention；

Fig. 6-1 is the end direction view of cylindrical cutlery in swing type electrode grinding device combination cutlery in single working end of the invention；

Fig. 6-2 is the axial sectional view of cylindrical cutlery in Fig. 6-1 electrode grinding devices combination cutlery；

Fig. 6-3 is the 3-D view of cylindrical cutlery in Fig. 6-1 electrode grinding devices combination cutlery；

Fig. 7-1 is the axial section view of arc surfaced cutlery in single working end the second cutlery of swing type electrode grinding device of the invention Figure；

Fig. 7-2 is the left view of arc surfaced cutlery in the second cutlery of Fig. 7-1 electrode grinding devices；

Fig. 8-1 is the axial section view of truncated cone-shaped cutlery in single working end the second cutlery of swing type electrode grinding device of the invention Figure；

Fig. 8-2 is the left view of truncated cone-shaped cutlery in the second cutlery of Fig. 8-1 electrode grinding devices；

Fig. 9 is single working end swing type electrode grinding device the second cutlery cutting edge structure schematic diagram of the invention；

Figure 10-1 is the external view of single working end swing type coping device reconditioning object China and foreign countries of the invention convex globoidal shape electrode；

Figure 10-2 is the external view of inner concave arc surface shape electrode in coping device reconditioning object of the present invention；

Figure 10-3 is the external view of cone electrode in coping device reconditioning object of the present invention；

Figure 11-1 is the bottom view of single working end swing type coping device reconditioning object electrode cap of the invention；

Figure 11-2 is the axial sectional view of single working end swing type coping device reconditioning object electrode cap of the invention；

Figure 11-3 is the partial enlarged view of electrode working surface at B in Figure 11-2；

Figure 12-1 is the front view of single working end swing type electrode automatic grinding device detent mechanism of the invention；

Figure 12-2 is the left view of Figure 12-1 detent mechanisms；

Figure 12-3 is the vertical view of Figure 12-1 detent mechanisms；

Figure 12-4 is the graphics of Figure 12-1 detent mechanisms；

Figure 13-1 is the front view of single working end swing type electrode automatic grinding device electrode relocation mechanism of the invention；

Figure 13-2 is the vertical view of Figure 13-1 electrodes relocation mechanism of the present invention；

Figure 13-3 is the right view of Figure 13-1 electrodes relocation mechanism of the present invention；

Figure 14-1 is the front view of single working end swing type electrode automatic grinding device relocation mechanism and stent of the invention；

Figure 14-2 is Figure 14-1 relocation mechanisms of the present invention and the vertical view after holder combination；

Figure 14-3 is relocation mechanism of the present invention and the right view after holder combination；

Figure 15 is the graphics of single working end swing type electrode automatic grinding device of the invention.

In figure：

The left guide shafts of 1- left frame 2- frame body upper plate 3-

4- stepper motor 5- splined shaft 6- splined shaft bearing external members

7- ball-screw bearing holder (housing, cover) part 8- ball-screw 9- roller nuts

The right guide shaft 11- correct frames 12- connecting plates of 10-

The right fulcrum bearing 15- working ends ontologies of 13- cage cover boards 14-

16- work end casings 17 and 18- servo motors and speed reducer 19 and 20- alternating current generators and speed reducer

21- spline gear 22- power input gear 23- frame body lower plates

The left fulcrum bearing 25- loose-proof fastening bolts 26-27- worm gears of 24- and worm screw

28- link block 29- axis pin 30- hanging scrolls

31- top electrode holding rods 32- powers on minimum holding rod 33- upper electrode caps

Electrode cap under the small holding rod 36- of electrode under electrode holder 35- under 34-

37- bolt draw bar 38- Rolling bearing 39- stepping motor brackets

Angular contact ball bearing 42- bevel gear wheels on 40- knife rest gears 41-

The first cutleries of angular contact ball bearing 44- the second cutleries of 45- under 43-

46- cutlery axis 47- tool-post structure 48- gear shaft bearing groups

49- cage 50- gear shaft 51- bearing spacers

52- clamp spring 53- Rolling bearing bearing group 54- guide sleeves

55- cutlery right end bearing 56- bevel pinion 57- keys

58- washer 59- elastic washer 60- nuts

Compression cylinder on 61- cutlery left end bearing group 62- check bolts 63-

64- cylinder mounting plates 65- adjusts connector 66-T type bolts

67- slide push rod 68- idler wheel 69- support plates

70- clamp system installing plate 71- installation base plate 72- clamping screws

73- lower compression cylinders 74- assembles bolt 75- adjustment bolts

76- bolt 77- axis pin 78- keys

79- control cabinet 80- guide shaft 81- springs

82- hold-down support 83- floating support saddle 84- cover plates

85- stents

Specific embodiment

Technical solution of the present invention is described in further detail in the following with reference to the drawings and specific embodiments, it is described specific Embodiment is only explained the present invention, is not intended to limit the invention.

It is straight the present invention relates to being applicable in auto soldering tweezers, manual soldering turret and fixed spot welder during spot-welding technology Line sports type electrode and pendulum motion type electrode carry out single working end swing type electrode automatic grinding device of automatic grinding.The present invention Coping device had the characteristics that during electrode dressing：First, make electrode dressing process to have using detent mechanism realization Benchmark reconditioning；Second, by the control to servo motor, it can be achieved that during to reconditioning displacement and reconditioning penetration of a cutting tool speed control；Its Three, it, can be to reconditioning to the gradually incremental variations of electrode surface operating angle after each reconditioning of swing type soldering turret electrode working surface Angle gradually carries out being incremented by compensation；Fourth, cutlery is to taking revolution+high speed rotation form to work during electrode dressing；Fifth, combination Each cutlery in cutlery is the multiple-cutting-edge cutlery of cutting edge quantity >=10；Sixth, two lateral electrode of butt welding tongs is using reconditioning side twice Formula, i.e. each one lateral electrode of reconditioning.A series of use together of above-mentioned technical measures determines the coping device of the present invention to each The electrode of class soldering turret is respectively provided with better grinding quality, lower electrode material consumption and longer cutlery service life, right Quality of welding spot, which improves and reduces spot-welding technology cost etc., can generate good effect.

The present invention is according in known technology for single working end swing type electrode automatic grinding device of lifetime of resistance spot welding electrode Shortcoming, propose following inventive concept：

(1) positioning determined under base condition moves working method

Reconditioning mode under base condition is determined in the electrode use that combination cutlery in working end distinguishes butt welding tongs both sides in two times, Positioning moves cutting reconditioning mode, and each reconditioning is cut just for the new layer thickness that formed of both sides electrode surface, changed with mistake Electrode dressing mode based on degree cutting.

(2) cutting characteristic

The cutting characteristic of coping device of the present invention is realized jointly by cutting system and cutting displacement mobile system.It is first, logical The control to cutting displacement mobile system movement velocity and moving displacement is crossed, realizes micro- bite cutting under the conditions of positioning shifting, Achieve the purpose that reduce electrode excessively cutting and improve cutlery service life；Second, the work by combining cutlery revolution+rotation The use of feature and multiple-cutting-edge mouth cutlery improves electrode working surface quality and reduces the purpose of cutlery use cost.

(3) the automatic compensation characteristic of reconditioning angular displacement

To swing type soldering turret, electrode is primary per reconditioning, and the working surface of electrode can be generated relative to fixed workpiece surface One small drift angle, the reality of electrode working surface and workpiece surface is not parallel when causing spot welding, and then butt welding point mass and electrode Consumption has a negative impact.It is inclined to the angular displacement after each electrode dressing using reconditioning angular displacement self compensating system of the present invention Difference carries out timely compensation, can effectively improve quality of welding spot and reduce consumption of electrode.

(4) reconditioning origin reference location mechanism

Because the electrode on soldering turret installs the more of conical surface abrasion, the electrode axial direction accuracy of manufacture and robot repetitive positioning accuracy etc. Ghost image is rung, and after being packed into soldering turret per secondary new electrode, can be utilized with respect to reconditioning benchmark there are different offsets, and to electrode material Rate generates certain negative effect.By reconditioning origin reference location, mechanism can eliminate this kind of deviation, improve the utilization rate of electrode.

As Figure 1-1, a kind of single working end swing type electrode automatic grinding for resistance spot welding proposed by the present invention Device, including stent 85 and the working end frame body being arranged on the stent 85.The working end frame body be internally provided with working end and Reconditioning angle compensation system, the electrode positioning mechanism when working end frame body frame outside is equipped with for electrode dressing, Working end frame body relocation mechanism is equipped between the stent 85 and the working end frame body；The working end frame body is group frame Structural shape, the working end frame body includes left frame 1, frame body upper plate 2, correct frame 11 and frame body lower plate 23, and passes through locking The fastening assembling of bolt 62.

It is equipped between the frame body upper plate 2 of the working end frame body and frame body lower plate 23 and transmits the splined shaft 5 of cutting power, supplies The working end left guide shaft 3 that axial sliding movement is oriented to up and down and right guide shaft 10 and transmission working end axial displacement power and band Move its ball guide screw nat being axially moved etc..One end of the ball-screw 8 passes through 18 output shaft end of retarder and servo Motor 17 is connected, and the other end of the ball-screw 8 is equipped with ball-screw bearing holder (housing, cover) part 7；The frame body upper plate 2 and frame body lower plate Coaxial corresponding four device to hole is issued on 23, respectively：The fixing assembling hole of left guide shaft 3 and right guide shaft 10, is assembled for splined shaft 5 Splined shaft bearing external member 6 and spline gear 21 mounting hole；The mounting hole of ball-screw bearing holder (housing, cover) part 7 on frame body upper plate 2 Pass through hole with 18 output shaft of retarder of servo motor 17.The front and both sides of the working end frame body are equipped with cover plate 84, The working end is made of the working cavity of closing working end ontology 15 and work end casing 16, each system of the coping device Major mechanical part is assemblied in the closed cavity, and collectively forms the working end of the present invention.It is filled on the ball-screw 8 Equipped with ball nut 9, the screw thread of the ball-screw 8 and the ball nut 9 is identical spherical raceway, the ball-screw 8 form ball-screw nut operative minor with ball nut 9；One end of the ball-screw 8 and the speed reducer 18 of servo motor 17 Output shaft it is direct-connected, the brearing bore cooperation in the bearing external member 7 of the other end and frame body upper plate 2 is assembled；The bottom of the splined shaft 5 End is equipped with spline gear 21, and the splined shaft 5 is equipped with cage 49, the splined shaft between the cage 49 and the splined shaft 5 Hole is clearance fit, and the cage 49 has three semiaxis of radial equipartition.

The working end includes working end ontology 15 and the 9 fixed connecting plate 12 of ball nut, the set slided respectively Fulcrum bearing on the left guide shaft 3 and right guide shaft 10, i.e., left fulcrum bearing 24 and right fulcrum bearing 14, the working end ontology 15 both sides are equipped with hanging scroll 30, and the bottom end of two fulcrum bearings 14 and 24 is equipped with the short axle hole of hanging scroll assembling, described two Each short axle hole in bearing 14 and 24 is slidably connected between 15 hanging scroll 30 of working end ontology for axis hole respectively, institute Two fulcrum bearings are stated to be fixedly connected with the connecting plate 12.The fulcrum bearing, which is divided to be bolted, is assemblied in the two of connecting plate 12 Side；The fulcrum bearing is slidedly assemblied in by its axial long hole on left guide shaft 3 and right guide shaft 10；When servo motor 17 works, Ball-screw 8 with retarder 18 in coaxially connected ball guide screw nat rotates synchronously, since ball nut 9 is by fixed peace On connecting plate 12, connecting plate 12 is further through the axis hole in one group of fulcrum bearing of fixing assembling thereon and working end ontology both sides Hanging scroll form articulated connection, said combination leads further through the axial long hole in fulcrum bearing and left guide shaft 3 parallel to each other and the right side It is formed and is slidably installed between axis 10, so that it may formed working end and be rotated relatively with servo electrode 17 on left and right guide shaft 3 and 10 The movement axially up and down answered.

The assembly of alternating current generator 19 and the retarder 20, the speed reducer are fixed with below the frame body lower plate 23 20 output shaft pass through the frame body lower plate 23 on reserve through-hole after to the frame body lower plate 23 top, the speed reducer 20 output shaft is equipped with power input gear 22, and the power input gear 22 is engaged with the spline gear 21.

Cage gear assembly and knife rest gear assembly are equipped in the working end ontology 15.

The cage gear assembly includes the gear shaft 50 that coordinate with cage 49, in the endoporus of the gear shaft 50 equipped with Three embeded slots of three semiaxis cooperation of the cage, chimeric be packed into gear shaft 50 three are chimeric respectively for three semiaxis In slot；There are one cage cover boards 13 for the top dress of the gear shaft 50.

The knife rest gear assembly includes knife rest gear 40, tool-post structure and combination cutlery；The combination cutlery includes cutlery Axis 46, one end of the cutlery axis 46 are equipped with the shaft shoulder, another from the shaft shoulder inside of the cutlery axis 46 to the cutlery axis 46 End successively be equipped with cutlery left end bearing group 61, the first cutlery 44, the second cutlery 45, cutlery right end bearing group 55, bevel pinion 56, Washer 58, elastic washer 59 and nut 60；It is connected between the bevel pinion 56 and the cutlery axis 46 by key 57；The knife Frame gear 40 is engaged with the gear shaft 50；The side wall of the knife rest gear 40 is equipped with 47 mounting hole of tool-post structure, the knife rest Body 47 is internally provided with cutlery rotary space, is set on the tool-post structure 47 there are two the bearing hole for installation combination cutlery, described It combines cutlery to be mounted in the tool-post structure 47 by cutlery left end bearing group 61 and cutlery right end bearing group 55, the tool-post structure The rectangular space for meeting cutlery revolution is internally provided with, the first cutlery 44 and the second cutlery 45 of the combination cutlery are located at institute It states in rectangular space, the rectangular space is more than combines the first cutlery 44 and the second cutlery 45 revolution when institute in cutlery with described The space accounted for；The top and bottom of the knife rest gear 40 are equipped with the shaft shoulder, and angular contact ball bearing is equipped at the shaft shoulder of upper end 41, lower angular contact ball bearing 43 is equipped at the shaft shoulder of lower end, on the outer shroud of the upper angular contact ball bearing 41 cooperation be equipped with one A bevel gear wheel 42；Bevel pinion 56 described in the bevel gear wheel 42 engages；

The reconditioning angle compensation system includes and the 12 fixed stepper motor 4 of connecting plate, the stepper motor 4 Output shaft is coaxially arranged with a worm screw 26, and the worm screw 26 drives a worm gear 27, and the centre bore of the worm gear 27 is threaded hole, institute It states and a thread 37 is equipped in threaded hole, the shaft end of the worm gear 27 is securely fitted in the endoporus of Rolling bearing 38, institute The bearing inner ring of Rolling bearing bearing group 53 cooperation stated Rolling bearing 38 and be securely fitted on the connecting plate 12 is assembled, institute Rolling bearing bearing group 53 is stated by 52 axial limiting of clamp spring；The lower end of the thread 37 passes through the Rolling bearing 38 Endoporus to the lower section of the connecting plate 12, the bottom end of the thread 37 is fixed with a link block 28；The link block 28 with It is hinged using axis pin 29 between the working end ontology 15.Stepper motor 4 is fixedly mounted on connection by stepper motor bearing 39 On the surface on 12 top of plate, shaft end and the worm screw 26 in Worm Wheel System pair are direct-connected；Snail in the Worm Wheel System pair The shaft end side of wheel 27 and the nose end fixing assembling of Rolling bearing 38；The center of the worm gear axial direction is and 37 end of thread of bolt draw bar Coordinate the threaded hole of assembling；The shaft end of the ball 38 and the inner ring cooperation of the ball bearing group 53 are assembled；Institute The shaft end for stating bolt draw bar 37 and the hole fixing assembling in link block 28；Corresponding to the rotation of stepper motor 4, worm gear 27 and rolling The rotation of axle sleeve 38 in situ will make bolt draw bar 37 form axial movement, and drive working end around its two pendant with link block 28 The axis revolution that axis 30 is established.By 4 corner subdivision accuracy of stepper motor it is higher the characteristics of, it can be achieved that being repaiied needed for working end The micro change of angle lap degree gradually carries out being incremented by compensation.

The position of electrode to be grinding is positioned when electrode positioning mechanism is used for electrode dressing, ensures that coping device of the present invention is having To electrode, surface to be repaired carries out reconditioning under reconditioning base condition.The detent mechanism is made of two groups of identical parts；Institute State electrode positioning mechanism and include two installation base plates 71, two installation base plates 71 it is upper and lower be respectively equipped with two nested structures it is identical and on Under the electrode positioning component that is arranged symmetrically, the electrode positioning component includes support plate 69, cylinder mounting plate 64 and cylinder 63, institute It states support plate 69 with two installation base plates 71 to be connected, the shaft end that 69 both sides of support plate are stretched out is respectively charged into installation base plate 71 It in the springhole of upper and lower both sides, and is locked using clamping screw, so as to form the integral frame structure of electrode positioning mechanism；It utilizes The wing tip of the frame structure is securely fitted on the outside of the left and right side frame of working end frame body by assembling bolt.The support plate 69 On be fixed with clamping and positioning plate 70, the support plate 69 is equipped with electrode axial locating surface, the cylinder mounting plate 64 with wherein One installation base plate 71 is fixed, and the cylinder rod of the cylinder 63 is connected with adjustment connector 65, T-shaped clamping screw 66 in turn and slides Push rod 67, the slide push rod 67 are equipped with guide groove, and the clamping and positioning plate 70 is equipped with feather key 78, and the feather key 78 is embedding In the guide groove of the slide push rod 67, the end of the slide push rod 67 is equipped with idler wheel 68；

Figure 12-1, Figure 12-2 and Figure 12-3 show that electrode grinding device processing object electrode assembly of the present invention includes powering on Pole holding rod 31 powers on the small holding rod 35 of minimum holding rod 32, upper electrode cap 33, lower electrode holder 34, lower electrode and lower electrode cap 36.Electricity During the reconditioning of pole, when electrode in place after, the idler wheel 68 in two sets of electrode positioning components under the promotion of slide push rod 67 respectively It is contacted with the side for powering on minimum holding rod 32 and the small holding rod 35 of lower electrode.

To the bit shift compensation of robot repeatable position when the working end frame body relocation mechanism is used for electrode dressing.The work Make end-rack body relocation mechanism and include the identical connection component of two nested structures, the connection component includes being fixed on the stent 85 Hold-down support 82, the hold-down support 82 is equipped with guide shaft 80, is set on the guide shaft 80 and consolidates with the working end frame body Fixed floating support saddle 83 is equipped with compression spring 81 on the guide shaft 80 and positioned at the upper and lower ends of the floating support saddle 83.Work It is the medium that engagement relationship is realized between present invention work end frame and coping device stent to make end-rack body relocation mechanism；It is floating by this Motivation structure, no matter that side of fixed arm (reference arm) in coping device of robot soldering pliers, can utilize work end frame Flying ability actively adapts to the adaptability needed for robot.

As shown in Fig. 1-1 to Fig. 5-2, when reconditioning is cut, after alternating current generator 19 starts, it is assemblied in 23 lower surface of frame body lower plate And work with direct-connected fixed 20 synchronous rotary of retarder of ac electrode 19, by power input gear 22 and spline gear 21, Communicate rotational motion to splined shaft 5；The top of the splined shaft 5 is assemblied in the axis of the splined shaft bearing external member 6 of frame body upper plate 2 It holds in inner ring, lower part and the internal splined hole cooperation of the spline gear 21 are assembled；The splined shaft 5 passes through the flower at 49 center of cage Keyhole, and be slidably matched assembling using spline engagement relationship therebetween with cage 49；Three stretched out in the cage 49 Semiaxis is fitted into respectively to be assemblied in the corresponding three assemblings embeded slot in 50 inside of gear shaft, and thus establish engagement therebetween The rotary power that cage 49 receives is passed to gear shaft 50 by work relationship；At the shaft shoulder of 50 external annular surface of gear shaft Coordinate with the bearing inner ring of gear shaft bearing group 48 and assemble；The outer shroud of the gear shaft bearing group 48 fits into working end ontology In 15 bearing pilot hole；The top bearing spacer 51 of the gear shaft bearing group 48 limits；The gear shaft 50 will rotate Power passes to the knife rest gear 40 being engaged with.Issue the circle that radius does not wait in the central axial both sides of the knife rest gear 40 Through-hole；An angular contact ball bearing 41 and 43 is respectively assembled at the shaft shoulder at the outside axial direction both ends of the knife rest gear 40；On described Tight fit assembles a bevel gear wheel 42 on the outer shroud of portion's angular contact ball bearing 41；The bevel gear wheel 42 passes through its axial shaft shoulder It is securely fitted in the correspondence shaft shoulder hole of working end ontology 15；The angular contact ball bearing 43 of the knife rest gear axially lower part assembling When in working end, ontology 15 combines assembling with working end the cover 16, it is packed into the bearing hole of cover plate 16.40 side of knife rest gear On wall, with being equipped with tool-post structure 47 in axially vertical, approximate rectangular through-hole.The tool-post structure 47 is present invention combination cutlery Assembling parent；The combination cutlery includes cutlery axis 46 and coordinates the cutlery being assemblied in 47 corresponding bearing hole of tool-post structure left End bearing 61 begins from the combination cutlery left end bearing 61, until the other end of cutlery axis 46, is sequentially connected in series the first cutlery of assembling 44th, the second cutlery 45, cutlery right end bearing 55, bevel pinion 56, key 57, washer 58, elastic washer 59 and stop nut 60 Deng.After the completion of above-mentioned assembling, in meshing relation, the bevel pinion 56 between the bevel gear wheel 42 and the bevel pinion 56 It is bonded by being realized between key 57 and cutlery axis 46.After the rotary power of alternating current generator is transmitted to knife rest gear 40, institute It states knife rest gear 40 and takes the tool-post structure 47 and the combination cutlery synchronous rotary being placed in tool-post structure 47, and form combination of the present invention Revolution of the cutlery during electrode dressing；Since the bevel gear wheel 42 being fixedly mounted on working end ontology 15 is with combining cutlery In bevel pinion 56 between in meshing relation, and the bevel pinion 56 is bonded by being realized between key 57 and cutlery axis 46, Combination cutlery of the coaxial tandem compound on cutlery axis 46 will be closed according to the gear ratio between bevel gear wheel 42 and bevel pinion 56 System with bevel pinion with cutlery axis 46 for axis synchronous high-speed rotation, and then forms coping device of the present invention and combines during the work time The working characteristics of cutlery revolution+high speed rotation.

In addition, consider from the secondary dust-proof and anti-bits angle of cage 49 and 50 joggleword of gear shaft, in the upper table of gear shaft 50 Face installs a working end cage cover board 13 additional.

As shown in Fig. 1-1 to Fig. 2-2, during electrode dressing, when needing working end or cutlery upper and lower displacement, servo motor 17 start, retarder 18 synchronous rotary direct-connected with it work；Under the output shaft end of the speed reducer 18 and ball-screw 8 It holds direct-connected；The axial other end of the ball-screw 8 is assemblied in the brearing bore of the ball-screw bearing holder (housing, cover) part 7 of frame body upper plate 2 In；The axial thread of the ball-screw 8 is spherical raceway, and one is similarly spherical raceway with its spherical raceway cooperation assembling Ball nut 9；The ball nut 9 is securely fitted on the upper surface of 12 side plate of connecting plate；The pair of fulcrum bearing 14 and 24 In the working end hanging scroll 30 that is stretched out respectively with 15 both sides of working end ontology of two short axle holes it is hinged；A left side for the connecting plate 12 Right both sides are fixedly connected respectively by bolt 25 with the pair of fulcrum bearing 14 and 24；After above-mentioned assembling combination, described group Using in the fulcrum bearing 14 and 24, axially parallel long axis hole is slidably matched and is assemblied in a left side and leads component respectively with working end frame On axis 3 and right guide shaft 10.It is corresponding since ball nut 9 is securely fitted on connecting plate 12 when servo electrode rotation work Ball-screw 8 will form ball nut 9 and take axial movement of the connecting plate 12 along ball-screw 8 in the rotation of fixed position；By To be fixedly connected, and by the fulcrum bearing 14 and 24 between the connecting plate 12 and the pair of fulcrum bearing 14 and 24 Establish slip cooperating relationship between long axis hole and left and right guide shaft 3 and 10, therefore the rotation of corresponding servo electrode, working end and its The combination cutlery taken will being axially formed and servo motor rotating speed and steering is corresponding moves along left and right guide shaft 3 and 10.Profit Have the characteristics that subdivision accuracy height and rotating speed are controllable with servo motor, so that it may realize that coping device of the present invention works in electrode dressing End movement speed or cutting speed and displacement accuracy cut the controllable cutwork characteristic of accuracy of measurement.

The function of being added when reconditioning angle compensation system is for swing type soldering turret electrode dressing in the present invention, passes through compensation The angular displacement deviation that working surface opposite piece surface generates after each reconditioning of electrode, guarantee electrode surface and workpiece surface are fitted Shi Pinghang, to ensure that quality of welding spot creates necessary condition.

The course of work of reconditioning angle compensation system is：As shown in Fig. 2-1 and Fig. 2-2, stepper motor 4 passes through stepper motor Stent 39 is fixedly mounted in the outer upper surface of connecting plate 12；The shaft end of the stepper motor 4 and worm screw 27 are direct-connected；The snail Worm and gear cooperating pair is formed between bar 27 and worm gear 26；The center of the worm gear 26 is and 37 top screw thread of bolt draw bar The threaded hole of cooperation forms therebetween thread fitting operative minor；The lower axial end tight fit of the worm gear 26 is packed into can only be In the hole of Rolling bearing 38 rotated in situ；The shaft end of 38 lower part of Rolling bearing fits into Rolling bearing bearing group 53 In bearing inner ring；The Rolling bearing bearing group 53 is securely fitted in the bearing hole of 12 upper portion side wall of connecting plate；The rolling The lower part of axle sleeve bearing group 53 is limited by clamp spring 52；The lower axial end of bolt draw bar 37 passes through logical inside the ball Kong Hou, one link block 28 of fixing assembling；Pin hole and the connection of 15 rear portion boss of working end ontology are passed through by axis pin 29 Pin hole in block 28 realizes articulated connection therebetween.After stepper motor 4 starts, the direct-connected worm screw with the stepper motor 27 rotate synchronously；The worm screw drives the worm gear 26 coordinated with it to rotate；Due to the internal thread and bolt draw bar of the worm gear 26 For screw thread operative minor between 37 external screw thread, and can only be taken in 26 rotation process of the worm gear Rolling bearing 38 fixed pan, And rotated by axis of the axis of rolling bearing group 53, while force bolt draw bar 37 and link block 28, it is started building by 29 band of axis pin Make end using the axis of a pair of of working end hanging scroll 30 as axis rotational motion.There is the high spy of subdivision accuracy using stepper motor Point, it is possible to realize and micro adjustment carried out to the work pivot angle of both sides working end after each electrode dressing, i.e., to reconditioning angle by Secondary incremental compensation.

As shown in Figure 12-1 to Figure 14-3, the electrode positioning mechanism in the present invention is treated in the process for electrode dressing The positioning of reconditioning electrode, the positioning for the present invention move micro reconditioning cutting and create necessary condition.The electrode positioning mechanism is by two The identical part combination of group forms, and two including the both sides that are placed in installation base plate 71 is respectively assembled at two installation bases Two support plates 69 of the plate about 71 in corresponding springhole, two electrode holders for being respectively assembled at two 69 insides of support plate Tight mechanism's installing plate 70, two groups of same mechanical parts being attached separately on two electrode clamping mechanism installing plates 70 and two sets of electrodes Clamp system dynamical system；Include slide push rod 67,67 compression end of slide push rod in every group of electrode clamping mechanism composition Idler wheel 68, for slide push rod 67 and the hinged connection axis pin 77 of idler wheel 68 and for limit slippage push rod 67 in the electricity The key 78 of sliding motion in pole clamp system installing plate 70；The dynamical system of the electrode clamping mechanism is respectively by being securely fitted in Two compression cylinders 63 and 73 on two cylinder mounting plates 64 provide；Described two cylinders are respectively and fixedly installed to two cylinders On installing plate 64；Described two cylinder mounting plates 64 take the compression cylinder 63 and 73 assembled and are securely fitted in same installation respectively Both sides up and down outside substrate 71；The cylinder rod end of the compression cylinder 63 and 73 passes through cylinder mounting plate 64 and installation base plate 71 On correspondence preformed hole after, respectively with adjustment connector 65 connect, and pass through two T-bolts respectively by two slide push rods 67 with Respective adjustment connector 65 links together.When detent mechanism works, two electrode holder 31 and 34 of soldering turret and the small holding rod 32 of electrode It is bonded with two outer surfaces of the anchor ring of 35 junctions respectively with two support plates 69, to playing axial repair during electrode dressing Grind the effect of altitude datum positioning；Two components are placed in the electrode clamping mechanism of two 69 insides of support plate then by 63 He of cylinder 73, the outer surface of upper and lower two electrodes to be grinding is compressed to " V " type positioning for being fitted in two clamp system installing plates, 70 inside respectively On face, to playing the role of axially position during electrode dressing, to inhibit soldering turret swing during electrode dressing that may be repaiied to electrode Grind the influence that quality generates.Detent mechanism after combination is using assembling the whole left frame 1 for being assemblied in work end frame of bolt 74 On the outer surface of correct frame 11.

Figure 13-1 to Figure 13-3 show the present invention working end frame body relocation mechanism, for robot to electrode dressing after The bit shift compensation of repeatable position.The relocation mechanism is securely fitted in working end frame body rear portion including hold-down support 82, two 83, two groups of springs 81 of floating support saddle and the guide shaft 80 by the part tandem compound on the hold-down support 82 etc.；By institute State relocation mechanism, no matter that side of fixed arm (reference arm) in coping device of robot soldering pliers, can utilize working end frame Frame can flying ability, actively adapt to the adaptability needed for robot.

As shown in Fig. 6-1, Fig. 6-2 and 6-3, in the present invention, first cutlery 44 is cylindrical cutlery, a plurality of helix The helical angle ω 1 of type cutting edge is identical, and diameter D1, the cutting edge quantity Z=n1 of the cylinder cutlery and the relationship of helical angle ω 1 are such as Under：

The geometric parameter of first cutlery, 44 cutting edge includes width e after anterior angle α, sword thickness f, dorsal horn σ and sword, and the parameter takes The relationship for being worth range and spot welding object material is as follows：

As shown in Fig. 7-1 and Fig. 7-2, the present invention in, second cutlery 45 be arc surfaced cutlery, the arc surfaced cutlery Surface be one kind in outer convex globoidal or inner concave arc surface；The cambered surface radius of the arc surfaced cutlery and the electricity for intending cutting reconditioning The cambered surface radius of pole work end side surface matches；The arc surfaced cutlery includes the identical cutting edge of several geometries；It is described The structure size of arc surfaced cutlery includes cutlery outside diameter D2, cutlery end diameter D3 and cutting edge quantity Z=n2；The structure The relationship of electrode diameter R and the second cutlery cutting edge helical angle ω 2 of the value range of size with intending cutting reconditioning are as follows：

As shown in Fig. 8-1 and Fig. 8-2, the present invention in, second cutlery 45 be truncated cone-shaped cutlery, the truncated cone-shaped cutlery Cone angle match with intending the cone angle of welding tip side of cutting reconditioning；The truncated cone-shaped cutlery includes several geometric forms The identical cutting edge of shape；The structure size of the truncated cone-shaped cutlery includes cutlery outside diameter D2, cutlery end diameter D3 and cutting edge Quantity Z=n3；The value range of the structure size and the electrode diameter R for intending cutting reconditioning and the second cutlery cutting edge hypsokinesis The relationship of angle ε is as follows：

As shown in figure 9, in the present invention, the geometric parameter of 45 cutting edge of the second cutlery includes anterior angle λ, dorsal horn δ, sword thickness b With sword thickness dorsal horn θ；The anterior angle λ, dorsal horn δ, the relationship of sword thickness b and sword thickness dorsal horn θ are as follows：

Figure 12-1, Figure 12-2 and Figure 12-3 show that electrode grinding device of the present invention is electric with its processing object during the work time Pole sub-assembly (including top electrode holding rod 31, powers on minimum holding rod 32, upper electrode cap 33, lower electrode holder 34, the small holding rod of lower electrode 35 and lower electrode cap 36) position relationship of opposite working ends in no detent mechanism；Wherein, it is not shown down in Fig. 3-1 to Fig. 3-3 The small holding rod 35 of electrode holder 34, lower electrode and lower electrode cap 36.

Figure 10-1, Figure 10-2 and Figure 10-3 show the small holding rod 32 and 35 of upper and lower electrode and upper and lower electrode cap 33 and 36 Syntagmatic and coping device of the present invention described in the first cutlery 44 and the second cutlery 45 during the work time to electrode surface Specific cutting reconditioning position；Wherein, S faces represent to need the working surface plane of reconditioning electrode, by the in the combination cutlery One cutlery 44 undertakes；Q faces are the curved surface side engaged with electrode working surface, i.e., with the evagination arc surfaced, imploded arcs Face shape or cone electrode are corresponding.

Figure 11-1, Figure 11-2 and Figure 11-3 respectively illustrate the axial sectional view of upper and lower electrode cap 33 and 36, electrode dressing Partial enlarged view after the axial appearance bottom view on surface and electrode working face reconditioning；So-called electrode dressing, for object Surface plane S in exactly upper and lower electrode cap 33 and 36 and the side curved surface S faces engaged with the S faces.

The holes that M is indicated in Fig. 2-2 is the assembling reference for installation hole unrelated with coping device of the present invention work.

After list working end of the invention swing type electrode automatic grinding device both can combine work end frame with floating support saddle It is directly installed on wall surface, it can also be rack-mount according to the demand of use site；Control cabinet 79 and work end frame Can use be installed separately form.Figure 15 is single working end swing type electrode automatic grinding device working end of the invention and control cabinet 79th, the 3-D view after electrode positioning mechanism, floating support saddle and the combination installation of stent 85；In figure, control cabinet 79 and described hair Bright coping device is assemblied on stent 85, is one of control cabinet 79 of the present invention and the combination installation form of coping device.

Present invention may also apply to the horizontal reconditionings of electrode, fixed except working end is taken when electrode uses horizontal reconditioning mode The spring force that position mechanism is rotated by 90 ° outer, to be required to adapt to robot bit shift compensation floating compensation mechanism more above-mentioned can vertically be repaiied Mill mode is greatly lowered.

The electric control system of list working end of the invention swing type electrode automatic grinding device can both select microcontroller to control, PLC can also be selected to control.

Electrode automatic grinding device of the present invention is in production in use, or automatic the opening using inductive switch control coping device Stop or control start and stop using robot, the start and stop of manual switch control coping device can also be used.

To sum up, the single working end swing type electrode automatic grinding device of the present invention is overcome in the prior art because structure is former with work Manage the above problem caused by the reasons such as attribute.Knife rest is established by cutting system and takes the working method for combining cutlery and rotating, It confirmed the combination cutlery of electrode automatic grinding device of the present invention during electrode dressing with the principle category of revolution+high speed rotation Property, and the use for multiple-cutting-edge cutlery creates necessary condition；Pass through the multiple-cutting-edge cutlery cutting edge more sharp keen and high-revolving work of cutlery Make feature, with reference to accurate control of the cutting displacement mobile system to cutting displacement movement speed and mobile displacement, realize micro- The positioning of welding tip is moved under the conditions of bite and is cut；It can be to swing type soldering turret reconditioning angle by reconditioning angle compensation system The compensation of displacement, electrode working surface is in due course parallel with workpiece surface after ensure that swing type soldering turret electrode dressing；By fixed Position mechanism ensures carry out reconditioning of the electrode under the conditions of benchmark determines；Ensure coping device to robot repeats bits by relocation mechanism Put the adaptability needed for precision.By the implementation together of abovementioned technology, the service life of cutlery is not only effectively increased With the grinding quality of electrode surface, can also very well produce effects reducing electrode material consumption and quality of welding spot raising etc. and obtaining.

Although above in conjunction with attached drawing, invention has been described, and the invention is not limited in above-mentioned specific implementations Mode, above-mentioned specific embodiment is only schematical rather than restricted, and those of ordinary skill in the art are at this Under the enlightenment of invention, without deviating from the spirit of the invention, many variations can also be made, these belong to the present invention's Within protection.

Claims (7)

1. a kind of single working end swing type electrode automatic grinding device for resistance spot welding including stent (85) and is arranged on described Working end frame body on stent (85), it is characterised in that：

The working end frame body is internally provided with working end and reconditioning angle compensation system, is assembled on the outside of the working end frame body frame Electrode positioning mechanism during electrode dressing is useful for, working end frame body is equipped between the stent (85) and the working end frame body Relocation mechanism；

The working end frame body be composite frame structure pattern, the working end frame body include left frame (1), frame body upper plate (2), Correct frame (11) and frame body lower plate (23), and pass through check bolt (62) fastening assembling；

Left guide shaft (3), right guide shaft (10), rolling are equipped between the frame body upper plate (2) of the working end frame body and frame body lower plate (23) Ballscrew (8) and splined shaft (5), one end of the ball-screw (8) are connected by retarder (18) with servo motor (17), institute The other end for stating ball-screw (8) is equipped with ball-screw bearing holder (housing, cover) part (7), and ball nut is equipped on the ball-screw (8) (9), the bottom end of the splined shaft (5) is equipped with spline gear (21), and the splined shaft (5) is equipped with cage (49), the cage (49) it is clearance fit between internal axial splines axis hole and the splined shaft (5), the cage (49) has radial equipartition Three semiaxis；

The working end include working end ontology (15), with the ball nut (9) fixed connecting plate (12), slide respectively The fulcrum bearing being sleeved on the left guide shaft (3) and right guide shaft (10), the both sides of the working end ontology (15) are equipped with hanging scroll (30), the bottom end of two fulcrum bearings is equipped with hanging scroll through-hole, is between described two fulcrum bearings and the working end ontology (15) Axis hole is slide hinged, and described two fulcrum bearings are fixedly connected with the connecting plate (12) by bolt (25)；

The lower surface of the frame body lower plate (23) is installed with the assembly of alternating current generator (19) and retarder (20), described to subtract The output shaft of fast machine (20) pass through the frame body lower plate (23) on reserve through-hole after to the frame body lower plate (23) top, institute The output shaft for stating speed reducer (20) is equipped with power input gear (22), the power input gear (22) and the spline gear (21) it engages；

Cage gear assembly and knife rest gear assembly are equipped in the working end ontology (15)；

The cage gear assembly includes the gear shaft (50) coordinated with cage (49), is equipped in the endoporus of the gear shaft (50) Three embeded slots coordinated with three semiaxis of the cage, three semiaxis are fitted into are packed into three embeded slots respectively；

The knife rest gear assembly includes knife rest gear (40), tool-post structure (47) and combination cutlery；The combination cutlery includes sword Has axis (46), one end of the cutlery axis (46) is equipped with the shaft shoulder, from the inside of the shaft shoulder of the cutlery axis (46) to the cutlery axis (46) the other end is equipped with cutlery left end bearing group (61), the first cutlery (44), the second cutlery (45), cutlery right end bearing successively Group (55), bevel pinion (56), washer (58), elastic washer (59) and nut (60)；The bevel pinion (56) and the sword It is connected between tool axis (46) by key (57)；The knife rest gear (40) is engaged with the gear shaft (50)；The knife rest gear (40) side wall is equipped with tool-post structure (47) mounting hole, is turned round inside the tool-post structure (47) for cutlery and reserves a rectangular space, It is set on the tool-post structure (47) there are two for installing the bearing hole of combination cutlery, the combination cutlery passes through cutlery left end bearing In the tool-post structure (47), the cutlery revolution chamber is empty for a rectangle for group (61) and cutlery right end bearing group (55) Between, for the first cutlery (11) and the second cutlery (12) of the combination cutlery in the rectangular space, the rectangular space is big In with it is described combine that the first cutlery (44) and the second cutlery (45) turn round in cutlery when shared space；The knife rest gear (47) top and bottom are equipped with the shaft shoulder, and angular contact ball bearing (41) is equipped at the shaft shoulder of upper end, is assembled at the shaft shoulder of lower end There is lower angular contact ball bearing (43), installation is coordinated on the outer shroud of the upper angular contact ball bearing (41), and there are one bevel gear wheels (42)；It is engaged between the bevel gear wheel (42) and the bevel pinion (56)；

The reconditioning angle compensation system include with the connecting plate (12) fixed stepper motor (4), with the stepping electricity Machine (4) output shaft is coaxially arranged with a worm screw (26), and the worm screw (26) drives a worm gear (27), the center of the worm gear (27) Hole is threaded hole, and a thread (37) is equipped in the threaded hole, and the lower end of the thread (37) passes through the company To the lower section of the connecting plate (12) after bearing hole on fishplate bar (12), the bottom end of the thread (37) is fixed with a connection Block (28)；It is hinged using axis pin (29) between the link block (28) and the working end ontology (15)；The worm gear (27) with Rolling bearing (38) is equipped between the bearing hole, the axis of rolling is equipped between the Rolling bearing (38) and the connecting plate (12) Bearing group (53) is covered, the Rolling bearing bearing group (53) is by clamp spring (52) axial limiting；

The electrode positioning mechanism includes two installation base plates (71), and two the upper and lower of installation base plate (71) are respectively equipped with two nooses Structure is identical and the electrode positioning component of arrangement symmetrical above and below, the electrode positioning component include support plate (69), cylinder mounting plate (64) it is connected with cylinder (63), the support plate (69) with two installation base plates (71), folder is fixed on the support plate (69) Tight mechanism's installing plate (70), the support plate (69) are equipped with electrode axial locating surface, the cylinder mounting plate (64) with wherein One installation base plate (71) is fixed, and the cylinder rod of the cylinder (63) is connected with adjustment connector (65), T-shaped clamping screw (66) in turn With slide push rod (67), the slide push rod (67) is equipped with guide groove, and the clamp system installing plate (70) is equipped with feather key (78), the feather key (78) is in the guide groove of the slide push rod (67), to limit the slide push rod (67) in institute Clamp system installing plate (70) slide over side walls is stated, the end of the slide push rod (67) is equipped with idler wheel (68)；During electrode dressing, When electrode in place after, the idler wheel (68) in two sets of electrode positioning components is under the promotion of slide push rod (67) respectively with powering on The side of minimum holding rod (32) and the lower small holding rod of electrode (35) contacts；

The working end frame body relocation mechanism includes the identical connection component of two nested structures, and the connection component includes being fixed on institute The hold-down support (82) on stent (85) is stated, the hold-down support (82) is equipped with guide shaft (80), is set on the guide shaft (80) Have with the fixed floating support saddle of working end frame body (83), on the guide shaft (80) and positioned at the upper of the floating support saddle (83) Lower both ends are equipped with compression spring (81).

2. it to be used for single working end swing type electrode automatic grinding device of resistance spot welding according to claim 1, it is characterised in that： There are one cage cover boards (13) for the top dress of the gear shaft (50).

3. according to single working end swing type electrode automatic grinding device that resistance spot welding is used for described in claim 1, it is characterised in that：Institute It states the front of working end frame body and both sides and integral type cover plate (84) is installed.

4. it to be used for single working end swing type electrode automatic grinding device of resistance spot welding according to claim 1, which is characterized in that First cutlery (44) is cylindrical cutlery, and the helical angle ω 1 of a plurality of spiral line type cutting edge is identical, the cylinder cutlery The relationship of diameter D1, cutting edge quantity n1 and helical angle ω 1 are as follows：

The geometric parameter of first cutlery (44) cutting edge includes width e after anterior angle α, sword thickness f, dorsal horn σ and sword, the parameter The relationship of value range and spot welding object material is as follows：

。

5. it to be used for single working end swing type electrode automatic grinding device of resistance spot welding according to claim 1, which is characterized in that Second cutlery (45) is arc surfaced cutlery, and the surface of the arc surfaced cutlery is one in outer convex globoidal or inner concave arc surface Kind；The cambered surface radius of welding tip side of the cambered surface radius of the arc surfaced cutlery with intending cutting reconditioning matches；

The arc surfaced cutlery includes the identical cutting edge of several geometries；The structure size of the arc surfaced cutlery includes sword Have outside diameter D2, cutlery end diameter D3 and cutting edge quantity n2；The value range of the structure size is with intending cutting reconditioning The relationship of electrode diameter R and the second cutlery cutting edge helical angle ω 2 are as follows：

。

6. it to be used for single working end swing type electrode automatic grinding device of resistance spot welding according to claim 1, which is characterized in that Second cutlery (45) is truncated cone-shaped cutlery, the cone angle of the truncated cone-shaped cutlery and the welding tip side for intending cutting reconditioning Cone angle match；

The truncated cone-shaped cutlery includes the identical cutting edge of several geometries；The structure size of the truncated cone-shaped cutlery includes sword Have outside diameter D2, cutlery end diameter D3 and cutting edge quantity n3；The value range of the structure size is with intending cutting reconditioning The relationship of electrode diameter R and the second cutlery cutting edge back rake angle ε are as follows：

。

7. being used for single working end swing type electrode automatic grinding device of resistance spot welding according to claim 7 or 8, feature exists In the geometric parameter of the second cutlery (45) cutting edge includes anterior angle λ, dorsal horn δ, sword thickness b and sword thickness dorsal horn θ；The anterior angle λ, The relationship of dorsal horn δ, sword thickness b and sword thickness dorsal horn θ are as follows：

。