CN107931812A - A kind of double work end automatic grinding device for lifetime of resistance spot welding electrode - Google Patents

Abstract

The invention discloses a kind of double work end automatic grinding device for lifetime of resistance spot welding electrode, including being arranged on two working ends symmetrical above and below, structure is identical and mutually independent of working end lower portion, each working end is configured with a reconditioning angle compensation system and reconditioning positioning datum adjustment mechanism；Realize power input gear, spline gear, splined shaft, cage that the system of cutting includes being driven successively by alternating current generator, gear shaft and take the knife rest gear of knife rest with combining cutlery etc.；Realizing the system of cutting displacement movement includes leading screw ball nut, connecting plate, support base and working end driven successively by servomotor etc.；Reconditioning angle compensation system includes two sets of stepper motors, worm and gear, bolt draw bar, contiguous block and axis pin etc.；Reconditioning positioning datum adjustment mechanism includes two-dimension adjustment slide unit and electrode positioning mechanism etc..The present invention is with the micro reconditioning of positioning shifting to electrode surface, reconditioning angle gradually incrementally compensates and the precise positioning ability of electrode dressing position.

Description

A kind of double work end automatic grinding device for lifetime of resistance spot welding electrode

Technical field

The present invention is the special process equipment on welding electrode reconditioning during spot-welding technology, more specifically, this hair It is bright be on 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 The double work termination electrode automatic grinding device of soldering turret electrode dressing, hereinafter referred to as coping device；In other words, electrode of the invention is repaiied Grinder both can carry out automatic grinding to the welding electrode coaxially to work, also can be to the welding of the swing type soldering turret of non-coaxial work Electrode carries out automatic grinding.

Background technology

During spot-welding technology, electrode working surface is acted on by the harsh working cycles load such as high temperature and high pressure, electrode The component and diameter of working surface, the contact area between electrode surface and workpiece surface, electrode surface and workpiece surface connect Resistance and separating process demand direction change of persistently supporting or opposing, a series of change dynamics such as thermal contact resistance of getting an electric shock change the welderings of product Point mass.It is equal in production in order to reduce the adverse effect of the essence caused by electrode surface state changes excessive butt welding point mass The mode of regular reconditioning electrode working surface is taken, with by the way that electrode diameter and electrode surface state are limited to a certain range The precautionary measures of interior fluctuation, 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 product type is different, price variance great disparity.Electricity Pole reconditioning is mainly intended reaching following purpose：First, the electrode working surface diameter increased is returned into its initial set value, The conductive surface diameter of electrode was limited in the electrode dressing phase twice and is fluctuated, to ensure to present in weld nugget forming process The relative equilibrium of electricity and heat-conducting section area creates necessary condition；Formed second, removing electrode working surface in pinpoint welding procedure All kinds of non-electrode original materials, including alloy-layer and attachment nitride layer etc., and be at the same time trimmed to two electrode working surfaces and work Part surface is parallel, is existed with ensureing the contact resistance between electrode working surface and workpiece to greatest extent and effectively feeding sectional area Fluctuation in limited scope, reduces the fluctuation of all kinds of welding interface conditions and mitigates the butt welding point mass generation such as temperature field transfer Adverse effect.Manual coping device need to should ensure to be placed in two electrodes work of spatiality when using by the experience of people The uniformity and correspondence of surface diameter, while also to ensure that thinning surface is in space virtual state with respect to this fashion The parallel relation of workpiece surface, is the work with suitable difficulty.Since existing electrode automatic grinding device is to swing type soldering turret electrode Do not take reconditioning angle to be incremented by indemnifying measure during working surface reconditioning, therefore repaiied in the electrode applied to oscillating motion type soldering turret During mill, also have the following disadvantages：

(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 Rotating cutlery in situ, relative constant electrode pressure acts on the cutting edge of both sides all the time during electrode dressing, and by cutting edge It is existing electrode grinding device work that three parameters such as rotating speed, electrode pressure and reconditioning time, which together decide on each reconditioning cutting output of electrode etc., When common feature, and thus produce the various negative nature machining attributes as described in the 2nd section.

(2) all kinds of negative attributes that existing electrode automatic grinding device is determined by common processing characteristic：First, cutlery is in fixed bit Put and 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 To the adverse effect of cutting edge impact, use electrode pressure stabilization on cutting edge to establish rear edge eloquence mostly and start rotating work Make mode, i.e., cutting edge, which ties up to, carries startup and rotating speed under very large electrode pressure effect and increases to design work rotating speed by zero moment, It is very big to the percussion of cutting edge；Third, from electrode outside diameter to the cutting linear velocity of electrode axle center cutting edge, there is by V= The change of Vmax to V=0, the i.e. cutting linear velocity at electrode outside diameter position and cutting acceleration are maximum, and the impact to cutting edge is made With most strong；The cutting linear velocity of electrode axis part is zero, and cutting edge centre has no shear action to electrode surface, the portion Stripping between position electrode material to be cut and electrode surface is that cutting edge rotation rolls the comprehensive knot that superposition is torn with rotation Fruit, uniformity and conductive capability and cutting edge to electrode surface electrode material etc. has certain destruction；Fourth, in order to Remove the metal to be cut of electrode axis part, it is contemplated that electrode repetitive positioning accuracy error and the cutting edge rotation certainly existed The factors such as required fit clearance, land length, which designs, must pass through axle center, and the local cutting edge beyond axle center is in working angles In bear the bad working environments such as the traditional method of indicating the pronunciation of a Chinese character and hard squeeze, it is totally unfavorable to cutting edge working life；Fifth, resetting error precision The offset of Center of Pressure will be caused, Center of Pressure offset will utilize fit clearance to make electrode dressing surface opposite piece surface shape Into certain processing drift angle, the nonparallelism between electrode working surface and workpiece surface is exacerbated, and then electrode feed is cut Stablizing relatively for face area is adversely affected with compositions such as quality of welding spot；Sixth, since cutlery is born during electrode dressing Impact stress it is very big, limit the sharpness of cutlery cutting edge, while also limit the small bite cutting energy of cutlery cutting edge Power, excessively cutting are known as the absolute main body in each electrode dressing amount.

(3) reconditioning quality is determined using the matching relationship of three parameters such as reconditioning time, rather than it is each 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 devices are not because possessing angle automatic compensation function step by step, in reconditioning swing type soldering turret electricity During pole, the unevenness after meeting gradual magnification reconditioning between electrode working surface and workpiece surface.

The content of the invention

For the prior art, the present invention provides a kind of double work end automatic grinding device for lifetime of resistance spot welding electrode, can be with Realize：(1) during whole reconditioning, two electrodes are all the time with electrode holder end face bulge loop and electrode automatic grinding device locating piece On benchmark of positioning datum when fitting closely as reconditioning, and keep opening inactive state；Electrode is waited to repair watch before electrode dressing Face not with cutlery edge contacts；During electrode dressing, from two groups of working ends take displacement that cutlery moves to both sides electrode surface and Displacement accuracy determines length accuracy when each reconditioning quality and reconditioning；Electrode dressing process is unrelated with electrode pressure.(2) no matter To linear motion-type soldering turret, or oscillating motion type soldering turret, take positioning to move and carry out repairing for electrode with micro cutting mode Mill；(3) to the electrode dressing of swing type soldering turret, the characteristics of being gradually shortened according to electrode with reconditioning number, gradually incremental compensation is electric Pole reconditioning angle, to ensure that the electrode working surface after reconditioning is in due course parallel in pinpoint welding procedure with workpiece surface；(4) repair The combination cutlery that mill working angles are composed of cylindrical milling cutter and arc surfaced milling cutter or truncated cone-shaped milling cutter is with+rotation of revolving round the sun Form is realized respectively carries out milling reconditioning to the working surface and adjacent side of welding tip；(5) to swing type soldering turret electrode Reconditioning, angular displacement compensation mechanism of the invention presets every reconditioning one-time electrode by program can be automatically by the operating angle of working end Degree one angular displacement increment of superposition, ensures that the electrode surface after swing type soldering turret electrode dressing is in due course parallel with workpiece surface.

In order to solve the above-mentioned technical problem, a kind of double work end for lifetime of resistance spot welding electrode proposed by the present invention is repaiied automatically Grinder, including stent and work end frame on the bracket is set, the working end lower portion be equipped with about two it is right Claim the working end arranged and structure is identical, each working end is configured with a reconditioning angle compensation system, the work end frame It is equipped with reconditioning positioning datum adjustment mechanism；The work end frame is combining structure pattern, and the work end frame includes a left side Frame, frame body upper plate, correct frame and frame body lower plate, and assembling is fastened by check bolt and is composed；The frame body upper plate and Left guide shaft, right guide shaft, ball-screw and flower are equipped with by the corresponding axis hole of upper-lower position and bearing external member between frame body lower plate Key axis；Include on the ball-screw using axial centre for symmetrically, two sections of right-and-left threaded spherical raceways each other, two sections of balls It is each on the raceway of face to assemble a right-and-left threaded ball nut each other；The bottom of the splined shaft is equipped with spline gear；The frame The lower surface of body lower plate is installed with the assembly of alternating current generator and retarder, and the output shaft of the gear reducer is described in Inputted after the through hole reserved in frame body lower plate to the top of the frame body lower plate, the output shaft of the retarder equipped with power Gear, the power input gear are engaged with the spline gear；The working end includes working end body and the ball The connecting plate of one of ball nut fixation, the branch being sleeved on the left guide shaft and right guide shaft slided respectively on leading screw Bearing, the both sides of the working end body are equipped with hanging scroll, and the bottom of two fulcrum bearings is equipped with hanging scroll through hole, described two Slide hinged for axis hole between fulcrum bearing and the working end body, described two fulcrum bearings pass through bolt with the connecting plate It is fixedly connected；On two working ends and respectively closed in two working end body cavity body side surfaces it is equipped with work End casing, so as to constitute the housing of the working end by working end body and the work end casing being attached thereto；The working end Housing in be equipped with cage gear assembly and knife rest gear assembly；The cage gear assembly includes gear shaft and cage, described Gear shaft is installed in the working end body by gear shaft bearing group and corresponding bearing spacer, and the cage is assemblied in On the splined shaft, spline endoporus and the splined shaft of the cage are slidably matched, and the cage has three semiaxis, institute Three embeded slots for being equipped with the endoporus of gear shaft and coordinating with three semiaxis of cage are stated, three semiaxis are fitted together to dress respectively Enter in three embeded slots, the installation end positioned at the cage on the gear shaft is equipped with cage cover board；The knife rest gear set Part includes knife rest gear, tool-post structure and combination cutlery；The combination cutlery includes cutlery axis, and one end of the cutlery axis is equipped with The shaft shoulder, the other end from the inside of the shaft shoulder of the cutlery axis to the cutlery axis are equipped with cutlery left end bearing group, the first sword successively Tool, the second cutlery, cutlery right end bearing group, bevel pinion, packing ring, elastic washer and nut；The bevel pinion and the sword Pass through key connection between tool axis；The knife rest gear is engaged with the gear shaft；The side wall of the knife rest gear is equipped with knife rest Body mounting hole is the reserved rectangular space of cutlery revolution inside the tool-post structure as cutlery turned cavities, the two of the tool-post structure Side is coaxially provided with two bearing holes for being used to combine cutlery installation bearing, the combination cutlery by cutlery left end bearing group and Cutlery right end bearing group is installed in the tool-post structure, and the first cutlery and the second cutlery of the combination cutlery are located at the sword Have in turned cavities room, when the space of the cutlery turned cavities is turned round more than the first cutlery in the combination cutlery and the second cutlery Shared space；The top and bottom of the knife rest gear are equipped with the shaft shoulder, and angular contact ball axis is equipped with the shaft shoulder of upper end Hold, lower angular contact ball bearing is equipped with the shaft shoulder of lower end, coordinates on the outer shroud of the upper angular contact ball bearing and is provided with one greatly Bevel gear；The bevel gear wheel is engaged with the bevel pinion；The two reconditioning angle compensations supporting with two working ends respectively The structure of system is identical, and is connected respectively with the connecting plate on two independent working ends；The reconditioning angle compensation system Including the stepper motor fixed with the connecting plate, a worm screw, the worm screw are coaxially arranged with the stepper motor output shaft A worm gear is driven, the centre bore of the worm gear is threaded hole, and a thread is equipped with the threaded hole, and the screw thread is drawn One end of bar passes through institute through the opposite side after the bearing hole on the connecting plate to the connecting plate in the thread The afterbody for stating connecting plate is fixed with a contiguous block；It is hinged between the contiguous block and the working end body using axis pin；It is described Rolling bearing is equipped between worm gear and the bearing hole, Rolling bearing axis is equipped between the Rolling bearing and the connecting plate Group is held, the Rolling bearing bearing group is by clamp spring axial limiting and is fixed on the connecting plate；The reconditioning positioning datum tune Complete machine structure includes two-dimension adjustment slide unit, and the two-dimension adjustment slide unit includes lower vertical adjustment slide unit and upper strata horizontal adjustment is slided Platform, the lower vertical adjustment slide unit are fixed with the correct frame, and electrode positioning is fixed with the upper strata horizontal adjustment slide unit Mechanism, the electrode positioning mechanism, which includes substrate, the substrate, includes intermediate plate, upper flange and lower wing plate, the intermediate plate and The upper strata horizontal adjustment slide unit side posts and fixes, and upper flange and lower wing plate are suspended from the upper strata horizontal adjustment and slide outside Platform, is fixed with gusset on the upper flange, the end of lower gusset, the upper gusset and lower gusset is fixed with the lower wing plate Portion is equipped with a cylinder, and open slot is equipped with the upper gusset and lower gusset, and the cylinder rod of two cylinders passes through the opening The side wall of groove stretches to the open slot, and the side opposite with cylinder rod is equipped with V-arrangement stationary plane in the open slot, and electrode is repaiied During mill, when electrode in place after, the small holding rod of the electrode is between cylinder rod and V-arrangement stationary plane.

Further, the present invention be used for resistance spot welding double work termination electrode automatic grinding device, wherein, the left guide shaft with A left side is fixed between the left frame to prevent scratching support, and the right side is fixed between the right guide shaft and the correct frame and prevents scratching support, institute Left anti-support and the right anti-position of support in height of scratching of scratching is stated between two working ends.

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 relation of helical angle ω 1 are as follows：

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

Second cutlery is arc surfaced cutlery, and the surface of the arc surfaced cutlery is in outer convex globoidal or inner concave arc surface One 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 cutlery Outside diameter D2, cutlery end diameter D3 and cutting edge quantity n2；The value range of the structure size and the electricity for intending cutting reconditioning The relation of polar diameter R and the second cutlery cutting edge helical angle ω 2 are as follows：

Second cutlery is truncated cone-shaped cutlery, the cone angle of the truncated cone-shaped cutlery and the welding tip for intending cutting reconditioning The cone angle of side matches；The truncated cone-shaped cutlery includes the identical cutting edge of several geometries；The truncated cone-shaped cutlery Structure size includes cutlery outside diameter D2, cutlery end diameter D3 and cutting edge quantity n3；The value range of the structure size The relation of electrode diameter R and the second cutlery cutting edge back rake angle ε with intending cutting reconditioning are 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 relation 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, combination cutlery is made in knife rest gear process of revolution, Also at the same time using the axis of cutlery axis as axis high speed rotation, formed combine cutlery by revolve round the sun+high speed rotation in a manner of to electrode dressing Cutting characteristic, can be inherently eliminated in known technology and be certainly existed after the electrode working surface reconditioning caused by operation principle Helix angle, be 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 The bite of each cutting reconditioning quality and cutlery cutting edge be subject to the accurate control of cutting system, can effectively reduce to electrode Excessive cutting and improve 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, can ensure electrode working surface and workpiece after each reconditioning in due course Surface it is in due course parallel, improve effective feeding capability of the electrode surface to workpiece surface, be conducive to improve quality of welding spot and reduction Consumption of electrode.

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

(5) by the use of reconditioning positioning datum micro-adjusting mechanism, by robot or artificially generated when can avoid electrode dressing Influence of the repeatable accuracy error to electrode work surface location precision, make cutlery cutting edge all the time should in the cutting of relative equilibrium Work under power, be beneficial to improve cutlery working life and quality of welding spot.

Brief description of the drawings

Fig. 1-1 is the main view when double work end automatic grinding device of the present invention is installation reconditioning positioning datum adjustment mechanism Figure；

Fig. 1-2 is the left view of the coping device of double work termination electrode shown in Fig. 1-1；

Fig. 1-3 is the right view of the coping device of double work termination electrode shown in Fig. 1-1；

Fig. 1-4 is the top view of the coping device of double work termination electrode shown in Fig. 1-1；

Fig. 2-1 is the structural principle front view of double work termination electrode coping device working end of the present invention；

Fig. 2-2 is the top view of the coping device of double work termination electrode shown in Fig. 2-1 working end；

Fig. 3-1 is the structural principle front view of double work termination electrode coping device cutter holder assembly of the present invention；

Fig. 3-2 is the sectional view of Fig. 3-1 double work termination electrode coping device cutter holder assembly B-B sections；

Fig. 3-3 is the top view of Fig. 3-1 double work termination electrode coping device cutter holder assemblies；

Fig. 4-1 is the front view of double work termination electrode coping device knife rest of the present invention；

Fig. 4-2 is the sectional view of Fig. 4-1 double work termination electrode coping device knife rests；

Fig. 5-1 is the sectional view of double work termination electrode coping device truncated cone-shaped combination cutlery of the present invention；

Fig. 5-2 is the sectional view of double work termination electrode coping device cambered surface combination cutlery of the present invention；

Fig. 6-1 is the end direction view of cylindrical cutlery in double work termination electrode coping device combination cutlery of the present invention；

Fig. 6-2 is the axial sectional view of cylindrical cutlery in Fig. 6-1 double work termination electrodes coping device combination cutlery；

Fig. 6-3 is the 3-D view of cylindrical cutlery in Fig. 6-1 double work termination electrodes coping device combination cutlery；

Fig. 7-1 is the axial sectional view of arc surfaced cutlery in second cutlery of double work termination electrode coping device of the present invention；

Fig. 7-2 is the left view of arc surfaced cutlery in Fig. 7-1 double work termination electrode the second cutleries of coping device；

Fig. 8-1 is the axial sectional view of truncated cone-shaped cutlery in second cutlery of double work termination electrode coping device of the present invention；

Fig. 8-2 is the left view of truncated cone-shaped cutlery in Fig. 8-1 double work termination electrode the second cutleries of coping device；

Fig. 9 is double work termination electrode coping device of the present invention second cutlery cutting edge structure schematic diagram；

Figure 10-1 is the external view of coping device reconditioning object China and foreign countries convex globoidal shape electrode of the present invention；

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 axial sectional view of electrode cap of the present invention；The axial view of electrode surface after reconditioning；

Figure 11-2 is the bottom view of Figure 11-1；

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 reconditioning positioning datum adjustment mechanism in the present invention；

Figure 12-2 is the left view of the adjustment mechanism of reconditioning positioning datum shown in Figure 12-1；

Figure 12-3 is the right view of the adjustment mechanism of reconditioning positioning datum shown in Figure 12-1；

Figure 12-4 is the top view of the adjustment mechanism of reconditioning positioning datum shown in Figure 12-1；

Figure 12-5 is the graphics of the adjustment mechanism of reconditioning positioning datum shown in Figure 12-1；

Figure 13 is position relationship when micro-adjusting mechanism is to electrode plane and axial three-dimensional localization under working status；

Figure 14 is the graphics of double work termination electrode coping device of the present invention.

In figure：1- left frames, 2- frame body upper plates, the left guide shafts of 3-, 4- stepper motors, 5- splined shafts, 6- splined shaft bearing holder (housing, cover)s Part, 7- ball-screw bearing holder (housing, cover) parts, 8- ball-screws, 9- ball nuts, the right guide shafts of 10-, 11- correct frames, 12- connecting plates, 13- cage cover boards, 14- working ends body, 15- support bases, 16- work end casings, 17- is right to be prevented scratching support, 18- work end caps Plate, 19- support bases, 20- working ends body, 21- cage cover boards, 22- ball nuts, 23- servomotors, 24- retarders, 25- Alternating current generator, 26- retarders, 27- spline gears, 28- power input gears, 29- frame body lower plates, 30- stepper motors, 31- connect Fishplate bar, 32- bolts, 33- support bases, 34- bolts, 35- is left to be prevented scratching support, 36- support bases, 37- bolts, 38- hanging scrolls, 39- extensions Axis, 40- worm gears, 41- worm screws, 42- Rolling bearings, 43- contiguous blocks, 44- contiguous blocks, 45- Rolling bearings, 46- worm gears, 47- snails Bar, 48- check bolts, the second cutleries of 49-, the first cutleries of 50-, 51- stepper motor bearings, 52- knife rest gears, the upper corner connections of 53- Touch ball bearing, 54- bevel gear wheels, angular contact ball bearing under 55-, 56- cutlery axis, 57- tool-post structures, 58- gear shaft bearing groups, 59- cages, 60- gear shafts, 61- bearing spacers, 62- axis pins, 63- bolt draw bars, 64- clamp springs, 65- bolt draw bar bearing groups, 66- bushings 1,67- bushings 2,68- cutlery right end bearing groups, 69- bevel pinions, 70- keys, 71- nuts, 72- elastic washers, 73- packing rings, 74- cutlery left end bearing groups, 75- cylinders, the upper gussets of 76-, 77- substrates, 78- vertical adjusting handwheels, 79- are vertical Adjusting screw support base, 80- butterfly locking nuts, 81- vertical adjusting leading screws, 82- horizontal sliding tables, 83- Level tunes leading screw 2, 84- adjusting nuts, 85- bolts, the vertical carriage saddles of 86-, 87- cylinders, gusset under 88-, 89- Level tune handwheels, 90- are horizontal Adjusting screw support base, 91- butterfly locking nuts, 92- bolts, 93- control cabinets, 94- stents, 95- holding screws, 96- electrodes Holding rod, the small holding rods of 97-, 98- electrode caps.

Embodiment

Technical solution of the present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, it is described specific Embodiment is only explained the present invention, is not intended to limit the invention.

A kind of double work end automatic grinding device for lifetime of resistance spot welding electrode proposed by the present invention, including stent 94 and setting Work end frame and control cabinet 93 on the stent 94, as shown in figure 14.The working end lower portion is equipped with two Under be arranged symmetrically and working end that structure is identical,

As shown in Fig. 1-1, Fig. 1-2, Fig. 1-3 and Fig. 1-4, the work end frame is combining structure pattern, the work End frame includes left frame 1, frame body upper plate 2, correct frame 11 and frame body lower plate 29, and fastens assembling group by check bolt 48 Conjunction forms.Four pairs of axis holes to correspond to each other are issued on the frame body upper plate 2 and frame body lower plate 29, are respectively：Left guide shaft 3 and the right side The fixing assembling hole of guide shaft 10.The part that upper working end is combined with the structural shape and mounted inside of lower working end is identical, Mirror is assemblied on the left guide shaft 3 and right guide shaft 10 of the work end frame each other；Below by upper working end and lower work End is referred to as working end, and is illustrated exemplified by main above working end.Each working end is configured with a reconditioning angle compensation System, the work end frame are equipped with reconditioning positioning datum adjustment mechanism.Two working ends in the present invention are both the present invention The assembling parent of coping device major mechanical part, and reconditioning angle compensation system and reconditioning positioning datum adjustment mechanism assembling with Benchmark during work.

In order to ensure the rigidity of work end frame, as Figure 1-1, lead between the left guide shaft 3 and the left frame 1 Cross tight fixed bolt 95 be fixed with it is left anti-scratch support 35, pass through tight fixed bolt 95 between the right guide shaft 10 and the correct frame 11 It is fixed with the right side to prevent scratching support 17, left anti-anti- 17 position in height of support of scratching of support 35 and the right side of scratching is located at two Between upper and lower working end.

A left side is equipped with by the corresponding axis hole of upper-lower position and bearing external member between the frame body upper plate 2 and frame body lower plate 29 Guide shaft 3, right guide shaft 10, ball-screw 8 and splined shaft 5；On the ball-screw 8 include using axial centre for symmetrically, two sections Right-and-left threaded spherical raceway each other, each assembling one right-and-left threaded ball nut each other on two sections of spherical raceways；The flower The bottom of key axis 5 is equipped with spline gear 27.

As shown in Fig. 1-1, Fig. 1-2 and Fig. 1-3, upper-lower position is issued each other in the frame body upper plate 2 and frame body lower plate 29 The mounting hole of corresponding splined shaft bearing external member 6 and spline gear 27, for the assembling of splined shaft 5；Frame body upper plate 2 is equipped with silk The mounting hole of thick stick ball bearing external member 7 and 24 axis of retarder of servomotor 23 pass through hole.The following table of the frame body lower plate 29 Face is installed with the assembly of alternating current generator 25 and retarder 26, and the output shaft of the gear reducer 26 is passed through under the frame body Inputted after the through hole reserved on plate 29 to the top of the frame body lower plate 29, the output shaft of the retarder 26 equipped with power Gear 28, the power input gear 28 are engaged with the spline gear 27.

The structure of two working ends above and below in the present invention is identical, and working end is described by taking working end above as an example Structure, as shown in Fig. 1-1, Fig. 1-2, Fig. 1-3 and Fig. 2-1, the working end includes working end body 14 and the ball wire Connecting plate 12 that the ball nut 9 of top on thick stick 8 is fixed, being sleeved on the left guide shaft 3 and right guide shaft 10 of sliding respectively Fulcrum bearing 15 and 36, as shown in Fig. 2-2, bushing 1 66 is equipped between the fulcrum bearing 15 and the left guide shaft 3, similarly, Bushing 2 67 is equipped between the fulcrum bearing 36 and the right guide shaft 10, the both sides of the working end body 14 are equipped with hanging scroll 38 and 39, the bottom of two fulcrum bearings 15 and 36 is equipped with hanging scroll through hole, two fulcrum bearings 15 and 36 and the working end body Slide hinged for axis hole between 14, two fulcrum bearings 15 and 36 are bolted to connection with the connecting plate 12.

It is connected on two upper and lower working ends and on the surface of two 14 and 20 chambers of working end body Work end casing 16 and 18, so that by working end body 14 (or 20) and the work end casing being attached thereto on each working end 16 (or 18) constitute the housing of the working end.

Cage gear assembly and knife rest gear assembly are equipped with the housing of the working end.

As shown in Fig. 2-1 and Fig. 2-2, the cage gear assembly includes gear shaft 60 and cage 59, the gear shaft 60 It is installed on by gear shaft bearing group 58 and corresponding bearing spacer 61 in the working end body 14, the cage 59 is assembled On the splined shaft 5, the spline endoporus of the cage 59 is slidably matched with the splined shaft 5, and the cage 59 has three Semiaxis, three embeded slots coordinated with three semiaxis of cage, three semiaxis point are equipped with the endoporus of the gear shaft 60 It Qian He not load in three embeded slots, the installation end positioned at the cage of the gear shaft 60 is equipped with cage cover board.

As shown in Fig. 3-1, Fig. 3-2 and Fig. 3-3, the knife rest gear assembly includes knife rest gear 52, tool-post structure 57 and group Close cutlery；As shown in Fig. 4-1 and Fig. 4-2, the combination cutlery includes cutlery axis 56, and one end of the cutlery axis 56 is equipped with axis Shoulder, from the shaft shoulder of the cutlery axis 56 on the inside of be equipped with cutlery left end bearing group 74, the successively to the other end of the cutlery axis 56 One cutlery 50, the second cutlery 49, cutlery right end bearing group 68, bevel pinion 69, packing ring 71, elastic washer 72 and nut 73；Institute State and connected between bevel pinion 69 and the cutlery axis 56 by key 70；The knife rest gear 52 is engaged with the gear shaft 60； The side wall of the knife rest gear 52 is equipped with 57 mounting hole of tool-post structure, and the inside of tool-post structure 57 is the reserved square of cutlery revolution As cutlery turned cavities, the tool-post structure 57 is equipped with two bearing holes for being used to install combination cutlery, the combination in shape space Cutlery is installed in the tool-post structure 57 by cutlery left end bearing group 74 and cutlery right end bearing group 68, the combination cutlery The first cutlery 50 and the second cutlery 49 be located in the cutlery turned cavities room, it is described as shown in Fig. 3-1, Fig. 3-2 and Fig. 3-3 The space of cutlery turned cavities is more than space shared when the first cutlery 50 and the second cutlery 49 turn round in the combination cutlery；Institute The top and bottom for stating knife rest gear 57 are equipped with the shaft shoulder, and angular contact ball bearing 53, the lower end shaft shoulder are equipped with the shaft shoulder of upper end Place is equipped with lower angular contact ball bearing 55, coordinates on the outer shroud of the upper angular contact ball bearing 53 and is provided with a bevel gear wheel 54；The bevel gear wheel 54 is engaged with the bevel pinion 69.

As shown in Fig. 6-1, Fig. 6-2 and 6-3, in the present invention, first cutlery 50 is cylindrical cutlery, a plurality of helix The helical angle ω 1 of type cutting edge is identical, cylinder diameter D1, the cutting edge quantity Z=n1 of cutlery and the relation of helical angle ω 1 It is as follows：

The geometric parameter of first cutlery, 50 cutting edge includes width e after anterior angle α, sword thickness f, dorsal horn σ and sword, and the parameter takes The relation for being worth scope and spot welding object material is as follows：

As shown in Fig. 7-1 and Fig. 7-2, in the present invention, second cutlery 49 is 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 knot The relation of electrode diameter R and the second cutlery cutting edge helical angle ω 2 of the value range of structure size with intending cutting reconditioning are as follows：

As shown in Fig. 8-1 and Fig. 8-2, in the present invention, second cutlery 49 is 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；After the value range of the structure size and electrode diameter R and the second cutlery cutting edge of intending cutting reconditioning The relation of inclination angle ε is as follows：

As shown in figure 9, in the present invention, the geometric parameter of 49 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 relation of sword thickness b and sword thickness dorsal horn θ are as follows：

In the present invention, as shown in Fig. 1-1, Fig. 1-2 and 1-3, the two reconditioning angles supporting with two working ends are mended respectively Repay that the structure of system is identical, and be connected respectively with the connecting plate 12 and 31 on two independent working ends.With with it is above Its structure described exemplified by the supporting reconditioning angle compensation system in working end, the reconditioning angle compensation system include with it is described The stepper motor 4 that connecting plate 12 is fixed, as shown in Fig. 2-1 and Fig. 2-2, one is coaxially arranged with 4 output shaft of stepper motor Worm screw 47, the worm screw 47 drive a worm gear 46, and the centre bore of the worm gear 46 is threaded hole, is equipped with the threaded hole One thread 63, one end of the thread 63 through after the bearing hole on the connecting plate 12 to the connecting plate 12 Opposite side, be fixed with a contiguous block 44 through the afterbody of the connecting plate 12 in the thread 63；As shown in Figs. 1-2, It is hinged using axis pin 62 between the contiguous block 44 and the working end body 14；Between the worm gear 46 and the bearing hole Equipped with Rolling bearing 45, Rolling bearing bearing group 65, the rolling are equipped between the Rolling bearing 45 and the connecting plate 12 Axle sleeve bearing group 65 realizes its axial limiting by a clamp spring 64, the Rolling bearing bearing group 65 is fixed on the connecting plate In 12 bearing hole.

The reconditioning positioning datum adjustment mechanism includes two-dimension adjustment slide unit, and the two-dimension adjustment slide unit can be purchased from market , the two-dimension adjustment slide unit includes lower vertical adjustment slide unit and upper strata horizontal adjustment slide unit, and the lower vertical adjustment is slided Platform is fixed with the correct frame 11, and electrode positioning mechanism is fixed with the upper strata horizontal adjustment slide unit, as Figure 12-1, Figure 12- 2nd, shown in Figure 12-3, Figure 12-4 and Figure 12-5, the lower vertical adjustment slide unit includes vertical carriage saddle 86, described vertical sliding Pedestal 86 is equipped with vertical adjusting leading screw support base 79, and vertical adjusting leading screw is equipped with the vertical adjusting leading screw support base 79 81, the upper end of the vertical adjusting leading screw 81 is equipped with vertical adjusting handwheel 78, and adjusting is combined with the vertical adjusting leading screw 81 Nut 84, the adjusting nut 84 are equipped with the dovetail groove being horizontally orientated to；The upper strata horizontal adjustment slide unit includes horizontal sliding table 82, the horizontal sliding table 82 is equipped with the dovetail slide block coordinated with the dovetail groove, and the horizontal sliding table 82 is equipped with Level tune Leading screw support base 90, the Level tune leading screw support base 90 is interior to be equipped with Level tune leading screw 83, the Level tune leading screw 83 One end be equipped with Level tune handwheel 89, the lower vertical adjustment slide unit and upper strata horizontal adjustment slide unit are equipped with butterfly lock Tight nut.As shown in figure 13, the electrode positioning mechanism include substrate 77, the substrate 77 include intermediate plate, upper flange and under Wing plate, the intermediate plate is bonded with the upper strata horizontal adjustment slide unit side, and is fixed by multiple bolts 92, such as Figure 12-4 With shown in Figure 12-5, upper flange and lower wing plate are suspended from the upper strata horizontal adjustment slide unit outside, are fixed with the upper flange Gusset 76, is fixed with lower gusset 88 on the lower wing plate, the end of the upper gusset 76 is equipped with cylinder 75, the lower gusset 88 End be equipped with cylinder 87, open slot is equipped with the upper gusset 76 and lower gusset 88, the cylinder rod of cylinder 75 passes through upper angle The side wall of open slot on plate 76 is stretched in the open slot, opposite with cylinder rod in the open slot as shown in Figure 12-5 Side be equipped with V-arrangement stationary plane, during electrode dressing, when two electrodes in place after, the small holding rod 97 of top electrode is located at upper gusset 76 On cylinder rod and V-arrangement stationary plane between, similarly, the cylinder rod that the small holding rod 97 of bottom electrode is located on lower gusset 88 is consolidated with V-arrangement Determine between face.The cylinder 75 and 87 is used for that the clamping of electrode to be used in place to be grinding, ensures the position on electrode surface to be repaired Put accuracy.After horizontal reference locks, pass through cylinder rod and the V in the upper gusset 76 and lower gusset 88 of cylinder 75 and 87 The centering clamping action of shape stationary plane, ensures that each electrode dressing carries out under unified reconditioning benchmark.

It is direct-connected simultaneously with its after being assemblied in the startup of alternating current generator 25 under work end frame frame body lower plate 29 in the present invention 26 synchronous rotary of the retarder work of 29 lower surface of frame body lower plate is assemblied in, by power input gear 28 and spline gear 27, Communicate rotational motion to splined shaft 5；The splined shaft 5 is coordinated by the splined hole at 59 center of cage with cage 59 to be assembled；Institute State three semiaxis stretched out in cage 59 and be fitted together to and be assemblied in the corresponding mounting groove in the inside of gear shaft 60, and build between Vertical joggleword pair, gear shaft 60 is passed to by the rotary power that cage 59 receives；The gear shaft 60 passes rotary power Pass the knife rest gear 52 being engaged with.After the rotary power of alternating current generator 25 is delivered to knife rest gear 52, the knife Frame gear 52 takes the tool-post structure 57 and the combination cutlery synchronous rotary being placed in tool-post structure 57, and forms present invention combination sword Has the revolution during electrode dressing；Since the bevel gear wheel 54 being fixedly mounted on working end body 14 is with combining cutlery In bevel pinion 69 between be in meshing relation, and the bevel pinion 69 is bonded by being realized between key 70 and cutlery axis 56, Combination cutlery of the coaxial tandem compound on cutlery axis 56 will be closed according to the gear ratio between bevel gear wheel 54 and bevel pinion 69 System, with bevel pinion with cutlery axis 56 for axis synchronous high-speed rotation, and then forms coping device of the present invention and combines during the work time Cutlery is with+the working characteristics of rotation that revolves round the sun.In addition, consider from cage 59 and the secondary dust-proof angle of 60 joggleword of gear shaft, in tooth The upper surface of wheel shaft 60 adds a cage cover board 13.

As shown in Fig. 1-1, Fig. 1-2, Fig. 1-3, Fig. 1-4, Fig. 2-1 and Fig. 2-2, after servomotor 23 of the invention starts, The retarder 24 synchronous rotary work direct-connected with it；One end of the output shaft end and ball-screw 8 of the gear reducer 24 is direct-connected； The axial other end of the ball-screw 8 is assemblied in the brearing bore of ball-screw bearing holder (housing, cover) part 7 of frame body upper plate 2；It is described 8 axial centre both sides of ball-screw are right-and-left threaded spherical raceways each other, and each assembling one is being each other just on the spherical raceway of both sides The ball nut 9 and 22 of left-hand thread.The ball nut 9 and 22 distinguishes fixing assembling connecting plate 12 on the top and lower section On the side plate of connecting plate 31；Two short axle holes in one group of support base 36 and 15 above working end with top respectively The working end hanging scroll 38 of 14 both sides of body is hinged；Two short axle holes in underlying one group of support base 33 and 19 respectively with The working end hanging scroll 39 of 20 both sides of working end body of lower section is hinged；The left and right sides of the connecting plate 12 passes through bolt respectively 37 are fixedly connected with support base 36 and 15；The left and right sides of the connecting plate 31 passes through bolt 32 and support base 33 and 19 respectively It is fixedly connected.When servo electrode rotation work, since two ball nuts 9 and 22 distinguish the connection of fixing assembling on the top On plate 12 and the connecting plate of lower section 31, and leading screw ball-pair of nut both sides positive/negative thread each other, corresponding ball-screw 8 is in fixation The rotation of position, will form two ball nuts 9 and 22,31 phase of connecting plate of the connecting plate 12 for the side of carrying and lower section respectively To, constant speed and equidistance motion；Since the connecting plate 12 and 31 is fixedly connected with each one group of support base of upper and lower respectively, and By establishing slip cooperating relationship between the long axis hole and left guide shaft 3 and right guide shaft 10 in the support base, therefore correspond to servo The rotation of motor 23, two working ends or its combination cutlery taken will produce opposite, constant speed along left guide shaft 3 and right guide shaft 10 With equidistant movement.Have the characteristics that subdivision accuracy is high and speed is controllable using servomotor 23, so that it may realize reconditioning of the present invention Device working end velocity of displacement or cutting speed and displacement accuracy or the controllable working characteristics of cutting accuracy of measurement in electrode dressing.

In the present invention, reconditioning angle compensation system is to be directed to the function of being added during swing type soldering turret electrode dressing, passes through benefit The angular displacement deviation that electrode working surface opposite piece surface produces after each reconditioning of electrode is repaid, ensures electrode surface and workpiece Surface it is in due course parallel, for ensure quality of welding spot create necessary condition.There are two nested structure forms and part on coping device of the present invention Form identical reconditioning angle compensation system, be respectively power with two stepper motors 4 and 30, and respectively with two groups of works Make to establish independent working relation between end.As shown in Fig. 2-1 and Fig. 2-2, stepping electrode 4 is solid by stepper motor bearing 51 Surely in the outer upper surface for the connecting plate 12 being mounted above；The stepper motor 4 and worm screw 47 are direct-connected；The worm screw 47 with Worm and gear cooperating pair is formed between worm gear 46；The center of the worm gear 46 is and 63 top thread fitting of bolt draw bar Threaded hole；The lower axial end tight fit of the worm gear 46 loads can only be in the original location in rotating Rolling bearing 45；Worm gear 46 Thread fitting operative minor is formed between the screw thread of threaded interior hole and bolt draw bar 63；The lower axial end of the Rolling bearing 45 is tight Fit into the bearing inner ring of Rolling bearing bearing group 65；The Rolling bearing bearing group 65 is securely fitted in upper junction plate In the bearing hole of side wall；The lower part of the Rolling bearing bearing group 65 is spacing by clamp spring 64；The lower part of bolt draw bar 63 is fixed Assemble a contiguous block 44；Pin hole and the upper working end rear body boss in contiguous block 44 are passed through by axis pin 62 Pin hole carries out the articulated connection between three.It is direct-connected with the stepper motor 4 and 30 respectively after stepper motor 4 and 30 starts Worm screw 47 and 41 rotate synchronously；The worm screw 47 and 41 drives respectively to be rotated with the worm gear 46 and 40 each coordinated；By institute It is screw thread operative minor to state between the internal thread of worm gear 46 and 40 and the external screw thread of bolt draw bar 63, and the worm gear rotation process In can only take Rolling bearing 45 and rotated by axis of the axis of rolling bearing group 65, while force bolt draw bar 63 and contiguous block 44 With 43, drive working end with working end hanging scroll 38 and 39 for axis rotational motion by axis pin 62.Reconditioning angle compensation system of the present invention System has the characteristics that subdivision accuracy is high using stepper motor, it is possible to realizes after each electrode dressing to the work of both sides working end Make pivot angle and carry out micro adjustment, i.e., reconditioning angle is gradually incrementally compensated.

In the present invention, the reconditioning positioning datum adjustment mechanism is the back work unit of coping device, including two-dimension adjustment Slide unit and electrode positioning mechanism, its entirety are securely fitted in the outside of working end frames, have two main functions：Its One, change known technology coping device is to have benchmark cutting without benchmark cutting, is that excessive cut when effectively reducing electrode dressing is created Make necessary condition；Second, efficiently using the tolerance length of electrode, the utilization rate of electrode material is improved.

As shown in Figure 12-1, Figure 12-2, Figure 12-3, Figure 12-4 and Figure 12-5, two-dimension adjustment slide unit can carry out vertically respectively Formed with two layers of standard slide unit of Level tune, electrode positioning mechanism is integrally fixedly mounted on the upper surface of horizontal sliding table；Two Dimension adjustment slide unit is fixedly mounted on the lateral surface of coping device frame by fixing bolt.When rotating vertical adjusting handwheel 78, hang down Straight adjusting screw 81 rotates synchronously, and drive adjusting nut 84 along its mating surface with vertical carriage saddle 86 in vertical direction It is mobile, and by the matching relationship of dovetail groove-dovetail slide block between adjusting nut 84 and horizontal sliding table seat 82, drive horizontal sliding The electrode positioning mechanism of pedestal 82 and fixing assembling on it is synchronously movable in a vertical direction；When rotation Level tune handwheel 89 When, Level tune leading screw 83 rotates synchronously, since vertical adjusting leading screw 81 limits the fortune of adjusting nut 84 in the horizontal direction Level side dynamic, that the electrode positioning mechanism for taking fixing assembling surface on it is slidably matched by horizontal sliding table seat 82 along dovetail groove To movement.After adjustment location determination vertically or horizontally, it can be distinguished using butterfly locking nut 80 and 91 Lock the position of positioning unit in the vertical direction or the horizontal direction.

The reconditioning positioning datum adjustment mechanism in the present invention does not participate in electrode dressing work directly, when the present invention repaiies After the soldering turret that grinder is serviced determines, the horizontal adjustment in the reconditioning positioning datum adjustment mechanism passes through horizontal adjustment handwheel The position of 89 adjustment horizontal sliding table seats 82 and its taken electrode positioning mechanism is adjusted, and only first horizontal using adjustment Using once during reconditioning benchmark, the accurate coordinate position of service soldering turret electrode reconditioning in the horizontal direction to confirm；Reconditioning is horizontal After position reference confirms, as long as being changed without soldering turret, its position is just locked by butterfly locking nut 91, is no longer enabled afterwards.Institute The vertical adjustment stated in reconditioning positioning datum adjustment mechanism adjusts horizontal sliding table seat 82 using vertical adjustment handwheel 78 and its is taken The coordinate accurate location of electrode positioning mechanism in vertical direction, two lateral electrode surface to be repaired of adjustment coping device working end and two The uniformity of distance, realizes and electrode material is made full use of between set combination cutlery cutting edge；The function is also only in coping device institute When servicing the electrode specification change of soldering turret, the reconditioning origin reference location adjustment of a vertical direction is carried out.

Fig. 1-3, Fig. 2-1, Fig. 3-1 and Fig. 3-2 show that electrode grinding device of the present invention is processed pair with it during the work time Position relationship between being combined as the 98 of electrode holder 96, the small holding rod 97 of electrode and electrode cap in no detent mechanism.

Figure 10-1, Figure 10-2 and Figure 10-3 show the syntagmatic of the small holding rod 97 of electrode and electrode cap 98, and this hair The first cutlery 50 and the second cutlery 49 described in bright coping device are during the work time to the specific cutting reconditioning portion of electrode surface Position；Wherein, S faces represent to need the working surface plane of reconditioning electrode, are undertaken by the first cutlery 50 in the combination cutlery；Q faces For the curved surface side engaged with electrode working surface, i.e., with the evagination arc surfaced, inner concave arc surface shape or cone electrode It is corresponding.

Reconditioning positioning datum adjustment mechanism is shown in Figure 13 under the working status of electrode dressing, to electrode plane and axis Position relationship during to three-dimensional localization.Wherein, the plane positioning of the electrode is to mean the electrode holder 97 and electricity of two lateral electrodes The ring table of minimum 98 junction of holding rod, with the upper surface of upper gusset 76 and the lower gusset 88 in the detent mechanism Lower surface fit closely after state；The axially position of the electrode is meant into gusset on detent mechanism 76 and lower gusset The small holding rod 98 of two electrodes of V-arrangement stationary plane on 88 cylinder 75 and 87 cylinder rod promote under with two inclined-planes in V-arrangement stationary plane State during contact.

Figure 11-1, Figure 11-2 and Figure 11-3 respectively illustrate the axial sectional view of electrode cap 98, the axis on electrode dressing surface Partial enlarged view to after appearance bottom view and electrode working face reconditioning；So-called electrode dressing, for object be exactly electrode Surface plane S in cap 98 and the side curved surface Q faces engaged with the S faces.

When coping device works under non-angular compensation condition, two groups of working ends are remained each other in mirror Move toward one another, two be respectively placed in it set knife rest gear assembly respectively takes a set of cutter holder assembly and is synchronized with the movement with working end；Every group A set of combination cutlery is respectively assembled in cutter holder assembly；Every group of combination cutlery each undertakes an electrode of affiliated work side Reconditioning work；The working end forms body structure with identical working end body and work end casing；Cut with electrode The relevant machine components that work are assemblied in the enclosure space for the working end babinet being made of working end body and work end casing It is interior.

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

Double work termination electrode automatic grinding device of the present invention both can be directly installed on wall using working end frame facet On, can also be rack-mount according to the demand of use site；Control cabinet with work end frame can also use be installed separately Form.Figure 14 is the 3-D view that double work termination electrode automatic grinding device of the present invention is installed with control cabinet and holder combination；Figure In, control cabinet 93 and the coping device of the invention are uniformly assemblied on stent 94, be coping device of the present invention installation form it One.

The electric control system of double work termination electrode automatic grinding device of the present invention can both select microcontroller to control, can also Select PLC controls.

Electrode automatic grinding device of the present invention in production in use, opening using a variety of inductors control coping device automatically Stop, the start and stop of manual switch control coping device can also be used.

The present invention is straight on being applicable to during spot-welding technology in auto soldering tweezers, manual soldering turret and fixed spot welder Line sports type electrode and oscillating motion type electrode carry out the double work termination electrode automatic grinding device of automatic grinding.The present invention's repaiies Grinder has the characteristics that during electrode dressing：First, under the operating mode of double work end, each working end only undertakes The reconditioning of one lateral electrode；Second, by the control to servomotor, it can be achieved that the control to reconditioning displacement and reconditioning speed；Its Three, can be to reconditioning angle to the gradually incremental variations of electrode operating angle after each reconditioning of swing type soldering turret electrode working surface Gradually carry out being incremented by compensation；Fourth, cutlery is to taking revolution+rotation form to work during electrode dressing；Fifth, in combination cutlery Every kind of cutlery be cutting edge quantity >=10 multiple-cutting-edge cutlery；Sixth, with the adjustment of reconditioning positioning datum and lock function.On A series of use in the lump of technical measures is stated, determines that the coping device of the present invention is respectively provided with preferably the electrode of all kinds of soldering turrets Grinding quality, lower electrode material consumption and longer cutlery service life, butt welding point Quality advance and a reduction point welder Skill cost etc. can produce good effect.

The automatic grinding device that the present invention is used for lifetime of resistance spot welding electrode is the shortcoming in known technology, is had following Feature：

(1) double work end working method：Respectively a lateral electrode in two lateral electrode of soldering turret is independently undertaken by two working ends Reconditioning works, and tool has the advantage that compared with known single working end reconditioning mode：First, respectively taken in double work end a set of more Sword combines cutlery, and each working end or often set combination cutlery only undertake the reconditioning work of a lateral electrode, can reduce the cutting of cutlery Load；Second, using coping device of the present invention reconditioning angular displacement self compensating system, can or pivot angle identical to pivot angle it is different The electrode automatic grinding of soldering turret.

(2) cutting characteristic：The cutting characteristic of coping device of the present invention is common by cutting system and cutting displacement mobile system Realize.First, by the control to cutting displacement mobile system movement velocity and moving displacement, realization is positioned under the conditions of shifting Micro- bite cutting, achievees the purpose that to reduce electrode excessively cutting and improves cutlery service life；Second, by combining cutlery The use of the work characteristics of revolution+rotation and more cutting edge cutleries, improves electrode working surface quality and reduces cutlery use cost Purpose.

(3) the automatic compensation characteristic of reconditioning angular displacement：Electrode working surface per reconditioning once, the work of swing type soldering turret electrode Surface can produce a small drift angle relative to fixed workpiece surface, electrode working surface and workpiece surface when causing spot welding It is actual not parallel, and then butt welding point mass and consumed electrode have a negative impact.Mended automatically using reconditioning angular displacement of the present invention Repay system and timely compensation is carried out to the angular displacement deviation after each electrode dressing, quality of welding spot can be effectively improved and reduce electrode Consumption.

(4) reconditioning positioning datum adjustment mechanism：Because of the installation conical surface abrasion of soldering turret top electrode and the electrode axial direction accuracy of manufacture Double influence, after loading soldering turret per secondary new electrode, the offset with respect to reconditioning benchmark is larger, and electrode material utilization is produced Negative effect.This kind of deviation can be eliminated by the adjustment of reconditioning positioning datum micro-adjusting mechanism, improve the utilization rate of electrode.

To sum up, a kind of double work end automatic grinding device for lifetime of resistance spot welding electrode of the invention overcome in the prior art because The problem that reasons such as structure ＆ working mechanism attribute.Establish knife rest and take the combination rotating working method of cutlery, make this Combination cutlery revolution+high speed rotation during electrode dressing in invention, necessary bar is created for the use of multiple-cutting-edge cutlery Part；By the multiple-cutting-edge cutlery cutting edge more sharp keen and high-revolving work characteristics of cutlery, with reference to cutting displacement translational speed and movement The accurate control of displacement, realizes the positioning under the conditions of micro- bite to welding tip and moves cutting；Mended by reconditioning angle The system of repaying can ensure that electrode working surface after swing type soldering turret electrode dressing to the compensation of swing type soldering turret reconditioning angular displacement It is in due course parallel with workpiece surface.The comprehensive implementation of abovementioned technology of the present invention, not only effectively increase cutlery uses the longevity The grinding quality with electrode surface is ordered, can also reduce the fine receipts of electrode material consumption and quality of welding spot raising etc. acquirement Effect.

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

Claims (6)

1. a kind of double work end automatic grinding device for lifetime of resistance spot welding electrode, including stent (94) and it is arranged on the stent (94) the work end frame on, it is characterised in that：

The working end lower portion is equipped with two working ends symmetrical above and below arranged and structure is identical, and each working end is supporting There is a reconditioning angle compensation system, the work end frame is equipped with reconditioning positioning datum adjustment mechanism；

The work end frame is combining structure pattern, and the work end frame includes left frame (1), frame body upper plate (2), right frame Frame (11) and frame body lower plate (29), and assembling is fastened by check bolt (48) and is composed；

A left side is equipped with by the corresponding axis hole of upper-lower position and bearing external member between the frame body upper plate (2) and frame body lower plate (29) Guide shaft (3), right guide shaft (10), ball-screw (8) and splined shaft (5)；On the ball-screw (8) include using axial centre as pair Claim, two sections of right-and-left threaded spherical raceways each other, each assembling one right-and-left threaded ball spiral shell each other on two sections of spherical raceways It is female；The bottom of the splined shaft (5) is equipped with spline gear (27)；

The lower surface of the frame body lower plate (29) is installed with the assembly of alternating current generator (25) and retarder (26), described to subtract The output shaft of fast machine (26) through after the through hole reserved on the frame body lower plate (29) to the top of the frame body lower plate (29), institute The output shaft for stating retarder (26) is equipped with power input gear (22), the power input gear (28) and the spline gear (27) engage；

The working end include working end body, the connecting plate fixed with one of ball nut on the ball-screw (8), The fulcrum bearing being sleeved on the left guide shaft (3) and right guide shaft (10) slided respectively, the both sides of the working end body are all provided with There is hanging scroll, the bottom of two fulcrum bearings is equipped with hanging scroll through hole, is axis between described two fulcrum bearings and the working end body Hole is slide hinged, and described two fulcrum bearings are bolted to connection with the connecting plate；On two working ends and positioned at two It is respectively closed on the surface of a working end body cavity outside to be equipped with work end casing, so that by working end body and therewith Connected work end casing constitutes the housing of the working end；

Cage gear assembly and knife rest gear assembly are equipped with the housing of the working end；

The cage gear assembly includes gear shaft (60) and cage (59), and the gear shaft (60) passes through gear shaft bearing group (58) it is installed on corresponding bearing spacer (61) in the working end body, the cage (59) is assemblied in the splined shaft (5) on, spline endoporus and the splined shaft (5) of the cage (59) are slidably matched, and the cage (59) has three semiaxis, Three embeded slots coordinated with three semiaxis of cage are equipped with the endoporus of the gear shaft (60), three semiaxis difference is embedding Attach together in three embeded slots, the installation end on the gear shaft (60) positioned at the cage is equipped with cage cover board；

The knife rest gear assembly includes knife rest gear (52), tool-post structure (57) and combination cutlery；The combination cutlery includes sword Has axis (56), one end of the cutlery axis (56) is equipped with the shaft shoulder, from the inside of the shaft shoulder of the cutlery axis (56) to the cutlery axis (56) the other end is equipped with cutlery left end bearing group (74), the first cutlery (50), the second cutlery (49), cutlery right end bearing successively Group (68), bevel pinion (69), packing ring (71), elastic washer (72) and nut (73)；The bevel pinion (69) and the sword Connected between tool axis (56) by key (70)；The knife rest gear (52) is engaged with the gear shaft (60)；The knife rest gear (52) side wall is equipped with tool-post structure (57) mounting hole, makees inside the tool-post structure (57) for the reserved rectangular space of cutlery revolution For cutlery turned cavities, tool-post structure (57) both sides are coaxially provided with two bearing holes for being used to combine the installation of cutlery bearing, described Cutlery is combined to be installed in the tool-post structure (57) by cutlery left end bearing group (74) and cutlery right end bearing group (68), it is described The first cutlery (50) and the second cutlery (49) for combining cutlery are located in the cutlery turned cavities room, the sky of the cutlery turned cavities Between shared space when being more than the first cutlery (50) and the second cutlery (49) revolution in the combination cutlery；The knife rest gear (57) top and bottom are equipped with the shaft shoulder, and angular contact ball bearing (53) is equipped with the shaft shoulder of upper end, is assembled at the shaft shoulder of lower end There is lower angular contact ball bearing (55), coordinate on the outer shroud of the upper angular contact ball bearing (53) and a bevel gear wheel is installed (54)；The bevel gear wheel (54) is engaged with the bevel pinion (69)；

It is identical with the structure for two reconditioning angle compensation systems that two working ends are supporting respectively, and respectively with two independent works Make the connecting plate connection on end；The reconditioning angle compensation system includes the stepper motor (4) fixed with the connecting plate, with Stepper motor (4) output shaft is coaxially arranged with a worm screw (47), and the worm screw (47) drives a worm gear (46), the worm gear (46) centre bore is threaded hole, and a thread (63), one end of the thread (63) are equipped with the threaded hole To the opposite side of the connecting plate after through the bearing hole on the connecting plate, the connection is passed through in the thread (63) The afterbody of plate is fixed with a contiguous block；It is hinged using axis pin (62) between the contiguous block and the working end body；The snail Rolling bearing is equipped between wheel (46) and the bearing hole, Rolling bearing axis is equipped between the Rolling bearing and the connecting plate Group is held, the Rolling bearing bearing group is by clamp spring axial limiting and is fixed on the connecting plate；

The reconditioning positioning datum adjustment mechanism includes two-dimension adjustment slide unit, and the two-dimension adjustment slide unit is adjusted including lower vertical Slide unit and upper strata horizontal adjustment slide unit, the lower vertical adjustment slide unit is fixed with the correct frame (11), and the upper strata is horizontal Electrode positioning mechanism is fixed with adjustment slide unit, during the electrode positioning mechanism includes substrate (77), the substrate (77) includes Between plate, upper flange and lower wing plate, the intermediate plate posts and fixes with the upper strata horizontal adjustment slide unit side, upper flange and under Wing plate is suspended from the upper strata horizontal adjustment slide unit outside, and gusset (76) is fixed with the upper flange, is consolidated on the lower wing plate Surely have a lower gusset (88), the end of the upper gusset (76) and lower gusset (88) is equipped with a cylinder, the upper gusset (76) and Open slot is equipped with lower gusset (88), the side wall of cylinder rod through the open slot of two cylinders stretches to the opening Groove, the side opposite with cylinder rod is equipped with V-arrangement stationary plane in the open slot, during electrode dressing, when electrode in place after, the electrode Small holding rod (97) between cylinder rod and V-arrangement stationary plane.

2. the double work termination electrode automatic grinding device according to claim 1 for resistance spot welding, it is characterised in that：It is described A left side is fixed between left guide shaft (3) and the left frame (1) to prevent scratching support (35), the right guide shaft (10) and the correct frame (11) be fixed between it is right anti-scratch support (17), support (17) is prevented scratching in height in left anti-support (35) and the right side of scratching Position is between two working ends.

3. it is used for the double work termination electrode automatic grinding device of resistance spot welding according to claim 1, it is characterised in that described the One cutlery (50) is cylindrical cutlery, and the helical angle ω 1 of a plurality of spiral line type cutting edge is identical, the diameter of the cylinder cutlery The relation of D1, cutting edge quantity n1 and helical angle ω 1 are as follows：

The geometric parameter of the first cutlery (50) cutting edge includes width e after anterior angle α, sword thickness f, dorsal horn σ and sword, the value of the parameter The relation of scope and spot welding object material is as follows：

4. it is used for the double work termination electrode automatic grinding device of resistance spot welding according to claim 1, it is characterised in that described the Two cutleries (49) are arc surfaced cutlery, and the surface of the arc surfaced cutlery is one kind in outer convex globoidal or inner concave arc surface；Institute The cambered surface radius for stating welding tip side of the cambered surface radius of 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 relation of electrode diameter R and the second cutlery cutting edge helical angle ω 2 are as follows：

5. it is used for the double work termination electrode automatic grinding device of resistance spot welding according to claim 1, it is characterised in that described the Two cutleries (49) are truncated cone-shaped cutlery, and the cone angle of the truncated cone-shaped cutlery cuts the cone angle of the welding tip side of reconditioning with plan 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 relation of electrode diameter R and the second cutlery cutting edge back rake angle ε are as follows：

6. it is used for the double work termination electrode automatic grinding device of resistance spot welding according to claim 6 or 7, it is characterised in that institute Stating the geometric parameter of the second cutlery (49) cutting edge includes anterior angle λ, dorsal horn δ, sword thickness b and sword thickness dorsal horn θ；The anterior angle λ, dorsal horn δ, The relation of sword thickness b and sword thickness dorsal horn θ are as follows：