CN2213600Y

CN2213600Y - Multifunction precision plane moving head

Info

Publication number: CN2213600Y
Application number: CN 95200683
Authority: CN
Inventors: 王庆桥
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-17
Filing date: 1995-01-17
Publication date: 1995-11-29
Anticipated expiration: 2005-01-17

Abstract

The utility model relates to a multifunction precision plane moving head. The design solves the ubiquitous problems of using various plane moving heads in electrical discharge machining at present. The multifunction precision plane moving head mainly comprise a 45DEG split eccentric mechanism, a driving rotary mechanism, a flat momentum adjusting mechanism, a slide mechanism and an electrode rotating adjustment and vertical adjustment mechanism. The driving rotary mechanism can select omnirange translation and unidirectional translation. The electrode has an angle of (+/-) 5DEG in the horizontal plane to be adjusted rotatablely and vertically. The multifunction precision plane moving head has the advantages of high precision, compact structure and high rigidity. The zero point does not float under the condition that the load bearing exceeds the maximum loading capacity by 30%. The utility model used a torque motor to drive. The torque motor has high output at a low speed. The adjustment of the tool electrode is convenient. The utility model can adjust the flat momentum without shutdown.

Description

Multifunction precision plane moving head

The utility model relates to a kind of in the spark-erosion sinking lathe discharges processing, the important machine tool accessories that makes electrode have an accurate radial compensation to move relative to workpiece--multifunctional accurate orbital head.

In electric spark type cavity mould process, the electrode of processing cavity, because the base reason cause of discharge processing, electrode is all lossy, has reduced the accuracy of repetition of electrode on type cavity mould like this, the fineness of die cavity is also poor simultaneously.External general the employing changed the electrode method and processed, promptly by thick, in, refiningly do a plurality of electrodes and process, improve the accuracy of repetition of mould, fineness is improved simultaneously, the manufacturing cost of electrode is big like this.The domestic reduction manufacturing cost that is generally is processed with an electrode, promptly adopts the method for truing electrode after the roughing, and second hand rail mark translation method processing refine die cavity is to improve die cavity accuracy of repetition and fineness.The existing orbital head of doing the track translation, owing to exist poor rigidity, precision low, because of what adopt is double eccentric mechanism, promptly transmit moment of torsion by the pin between eccentric shaft and the eccentric bushing, self-lock force is poor, no matter from where to touching slide plate with have gentle hands, offset will change, especially having under the loading condition, the die cavity machining accuracy is brought influence.Eccentric bushing and eccentric shaft manufacture difficulty are big in addition, can only guarantee eccentric precision by mold in the production, error is difficult to avoid, because of mold can not be accomplished " 0 " error that do not have to " 0 ", so " 0 " of orbital head point drift amount is big, and is low to the electrode positioning accuracy after the finishing.Also just therefore structure, its maximum eccentricity amount is little, has only 1mm, there are not eccentric direction indication and regulating system in addition, the problem that occurs in the processing need be studied for a second time courses one has flunked in the processing in case a certain orientation, or wants a little surpluses of multi-processing, looks for the orientation very difficult, can only finish with the crawl stepper motor by rule of thumb, the orientation accuracy rate is low.The function that does not possess the orientation of electrodes of looking in addition also can only be finished with the degree of tightness electrode, so look for very difficulty of orientation.The setting height(from bottom) of electrode is big, and mold height is restricted.

The purpose of this utility model is just to provide a kind of multifunctional accurate orbital head, it both can be only finished die cavity with an electrode and finished processing to accurate radial compensation of electrode from roughing to the fine finishining overall process, reduce the electrode manufacturing cost, be convenient to process operation simultaneously, with its high accuracy and the multi-functional processing of finishing die cavity.

The purpose of this utility model is achieved in that the multifunctional accurate orbital head that a kind of spark-erosion sinking lathe is used, and it is characterized in that, comprises off-centre and " 0 " position governor motion be made up of knob 1, screw rod 2, cover plate 3 and nut seat 7; By skewback main shaft 10, ball 41,11, oblique chute body 12, bearing holder (housing, cover) 13, lapping plate 14, adjustment plate 15, base ring 16, the

ball

17,19,20,55 at supporting base 9, angle at 45, the eccentric stiffener that retainer 56 and pressing plate 18 are formed; Driving rotation and the direction selection mechanism formed by worm gear 4, worm screw 5, worm gear case 6, direction indication scale 8, key 42, pin 43, bearing 44, bearing cap 45, motor 46, electric baseboard 47,

gear

48,49, key 50, bearing 51,52, clamping sleeve 53, vernier knob 54 and scale 59; By the gusset piece 38 that connects with lathe, top board 37, upper slide 35, middle slide plate 36, base plate 34, steel ball 39,40, meet dish 21, table folder 33, dial gauge 32 and four and transfer the pillar of interference and the sled mechanism that bolt 58 is formed; And by seat 22, housing screw 23, a pair of butterfly spring 24, swinging strut 25, steel ball 26, plunger contact 27, insulation sleeve 28, electrode connect dish 29, on connect dish 30, rotary disk 31 and two adjust electrode horizontal rotation and the vertical alignment mechanisms that screws 57 are formed.

Below in conjunction with accompanying drawing, specifically describe embodiment of the present utility model.

Fig. 1 is vertical complete section figure of the utility model multifunctional accurate orbital head;

Fig. 2 is a worm gear case A-A cutaway view of the present utility model;

Fig. 3 is an angled-lift splits eccentric stiffener B-B cutaway view of the present utility model;

Fig. 4 is electrode revolution of the present utility model and vertical alignment mechanism C-C cutaway view.

1, eccentric stiffener: be fixed in the supporting base 9 on the gusset piece 38, form the cooperation connection of rolling by the skewback main shaft 10 and the steel ball 41 at angle at 45, main shaft 10 can rotate in supporting base 9 and move up and down.The skewback main shaft 10 at angle at 45, and between the inclined-plane of oblique chute body 12 also is made up of to roll steel ball 11 and is cooperated and be partly eccentric.Between the bearing holder (housing, cover) 13 and main shaft 10 vertical with main shaft 10 axial lines, also form the revolution centering part of rolling and cooperating by steel ball 55, the two constitutes jointly eccentric stiffener.Steel ball 17,19 tiltedly is housed below the chute body 12 and adjusts plate 15, and be anchored on the oblique chute body 12 by pressing plate 18 for plane rolling cooperates.Be fixed on the lapping plate 14 by base ring 16 at adjustment plate 15, and lapping plate is fastened on the middle slide plate 36 of sled mechanism with screw.Oblique in addition chute body 12 also is made up of to roll steel ball 20 with lapping plate 14 and is cooperated, so that tiltedly the chute body rotates.Upwards move a △ t amount in main shaft 10 present 9, skewed slot is partly just pushing away oblique chute body 12 and moves horizontally a △ t and measure like this, the principle that equates with horizontal edge because of the vertical edges of 45.Slide plate has just had the side-play amount of △ t like this.When main shaft 10 rotated, because of bearing holder (housing, cover) 13 is to be screwed to be one with oblique chute body 12, main shaft 10 transmitted moments of torsion by the steel ball on the retainer 56 55 and gives bearing holder (housing, cover) 13, and so oblique chute body 12 also rotates thereupon, forms comprehensive translation.When stopping operating, be the eccentric stiffener of folk prescription to translation to a certain azimuth deviation.

2, drive rotation and direction selection mechanism: main shaft 10 upper end step places are connecting a direction indication scale 8 with key 42, behind the scale alignment scale 59 on the scale, can make folk prescription for selected directions and use to translation.Above scale 8, on the main shaft 10 with pin 43 worm gear 4 that is being fixedly connected, two bearings 44 is used at axle 10 two ends again, fixed supporting worm gear 4 the fixedly turbine body 6 of center of rotation has been arranged, worm gear is securely fixed in main shaft 10 upper ends like this, when torque motor 46 rotates, by

gear

48,49, the worm screws 5 that are fixed on bearing 51,52 centres are rotated, rotate thereby drive worm gear to main shaft 10.Will make folk prescription when selecting with scale 8 when motor stops operating, as long as use the vernier knob 54 that is fixed on worm screw 5 front ends, manually trace is regulated, and just can reach the orientation and choose accurately.

3, eccentric and " 0 " position governor motion: this mechanism is in the upper right side of supporting base 9, the right side of worm gear.Knob 1 is connected on the cover plate 3 with screw rod 2 usefulness pins, and cover plate 3 and worm gear housing 6 are to be screwed to be one.Nut seat 7 and supporting base 9 are to fix with 2 vertical and 2 cross screws.During with hand turning knob 1, screw rod 2 moves in nut seat 7, and worm gear case moves up when clockwise rotating, and whole like this worm gear just moves up main shaft 10 by worm gear 4, and forms the offset of △ t.Otherwise when rotating counterclockwise, △ t is reduced to " 0 ", reaches adjusting " 0 " position purpose.

4, sled mechanism: gusset piece 38 left sides connect with lathe above partly, below four screw attachment the top board 37 of sled mechanism.Between upper slide 35 and the top board 37, and and middle slide plate 36 between two V-type rails are all respectively arranged, steel ball is arranged in the middle of the guide rail, there is not guide rail between middle slide plate 36 and the base plate 34, but steel ball is arranged, four blocks of plates are passed from the pillar of four adjustment interference by four bolts 58 and are being coupled to each other, and the central authorities of middle slide plate are fixing and connecing dish 21, so that revolution of following connection electrode and vertical alignment mechanism clamping load electrode.

5, electrode horizontal rotation and vertical alignment mechanism: the dish 21 that connects on seat 22 and the sled mechanism fastens as one.Housing screw 23 is with butterfly spring 24, and on the rotary disk 31 fastening present 22, overcoming under certain frictional force, rotary disk 31 rotatable certain angles, promptly finish by two adjustment screw 57 that head on the pillar 25 that is fixed on the rotary disk 31 on the seat 22, another is tight when a pine, can realize that just electrode has at horizontal plane ± 5 ° angle rotary, has realized the direction of centering electrode.Be fixed in addition under the rotary disk 31 on connect the dish 30, to connect dish 29 fastening by four screws with electrode, and in the middle of two dishes, compressing a steel ball 26 in 90 ° of pits, when electrode is loaded in the insulation sleeve 28 by extension bar 27, reinstall electrode and connect dish 29, by screw fastening after, just can utilize fastening two four screws that connect dish, carry out about electrode to vertically, and before and after to vertical centering, to guarantee the relative workpiece of electrode a correct position is arranged.

The utility model advantage is precision height, compact conformation. Adopt 45 ° of Slanted slide block mechanisms; rigidity and the self-lock force of structure have been improved; carry load is big; 25 kilograms of nominal loads; surpass again in the situation of nominal load 30%; " 0 " puts not drift; so overall stiffness is good, can not regulate the translation amount with shutting down, the centering of tool-electrode is very convenient; have the function of looking for electrode direction; use the blocking rotation ability strong, after the moment electrode drive of energy high output under the low speed, drive system are overlapped deceleration system by one; moment of torsion is big; but have omnirange translation and folk prescription translation, or the selective system of depth processing, in addition as long as change different gusset pieces; just can connect with all kinds of model lathes, this utility model just can be installed on the spark-erosion machine tool of different model.

1 knob, 2 screw rods, 3 cover plates, 4 worm gears, 5 worm screws, 6 worm gear cases, 7 nut seats, 8 direction scales, 9 supporting bases, 10 is 45 ° of skewback main shafts, 11 balls, 12 oblique chute bodies, 13 bearing holder (housing, cover)s, 14 lapping plates, 15 adjust plate, 16 base rings, 17 balls, 18 pressing plates, 19 balls, 20 balls, 21 connect dish, and 22,23 housing screws, 24 butterfly springs, 25 swinging struts, 26 steel balls, 27 plunger contacts, 28 insulation sleeves, 29 electrodes connect dish, connect dish on 30,31 rotary disks, 32 dial gauges, 33 table folders, 34 base plates, 35 upper slides, slide plate in the middle of 36,37 top boards, 38 gusset pieces, 39 balls, 40 balls, 41 balls, 42 keys, 43 pins, 44 bearings, 45 bearing caps, 46 torque motors, 47 electric baseboards, 48 gears, 49 gears, 50 keys, 51 bearings, 52 bearings, 53 clamping sleeves, 54 vernier knobs, 55 balls, 56 retainers, 57 adjust screw, 58 support bolts, 59 scales.

Claims

1, the multifunctional accurate orbital head used of a kind of spark-erosion sinking lathe is characterized in that, comprises off-centre and " 0 " position governor motion of being made up of knob 1, screw rod 2, cover plate 3 and nut seat 7; By skewback main shaft 10, ball 41,11, oblique chute body 12, bearing holder (housing, cover) 13, lapping plate 14, adjustment plate 15, base ring 16, the ball 17,19,20,55 at supporting base 9, angle at 45, the eccentric stiffener that retainer 56 and pressing plate 18 are formed; Driving rotation and the direction selection mechanism formed by worm gear 4, worm screw 5, worm gear case 6, direction indication scale 8, key 42, pin 43, bearing 44, bearing cap 45, motor 46, electric baseboard 47, gear 48,49, key 50, bearing 51,52, clamping sleeve 53, vernier knob 54 and scale 59; By the gusset piece 38 that connects with lathe, top board 37, upper slide 35, middle slide plate 36, base plate 34, steel ball 39,40, meet dish 21, table folder 33, dial gauge 32 and four and transfer the pillar of interference and the sled mechanism that bolt 58 is formed; And by seat 22, housing screw 23, a pair of butterfly spring 24, swinging strut 25, steel ball 26, plunger contact 27, insulation sleeve 28, electrode connect dish 29, on connect dish 30, rotary disk 31 and two adjust electrode horizontal rotation and the vertical alignment mechanisms that screws 57 are formed.

2, multifunctional accurate orbital head according to claim 1, it is characterized in that: eccentric stiffener is by the skewback main shaft 10 at angle at 45, with form the eccentric part of rolling and to cooperate by steel ball 11 between oblique chute 12 inclined-planes, with also form the revolution centering part of rolling and cooperating between vertical bearing holder (housing, cover) 13 of main shaft 10 center lines and the main shaft 10 by steel ball 55, the two constitutes jointly eccentric stiffener.

3, multifunctional accurate orbital head according to claim 1, it is characterized in that: the supporting base 9 that driving rotation and direction selection mechanism are fixed in gusset piece 38 the right cooperates connection with 45 ° of main shafts 10 for rolling, when driving, worm gear 4 plays centering supporting usefulness when main shaft 10 rotates, worm gear 4 is to be fixedly connected with pin 43 and axle 10, worm gear is being supported at axle 10 two ends by bearing 44 rotation, to form the driving rotation of comprehensive translation, when stopping operating, can coincide from 45 ° of inclined-planes, and make folk prescription to translation with selected directions on the direction indicating dial 8 of key 42 connections with main shaft 10.

4, multifunctional accurate orbital head according to claim 1, it is characterized in that: eccentric and " 0 " position governor motion is fixedly connected by knob 1 and screw rod 2 usefulness pins, cover plate 3 and worm gear housing 6 are fixed as one, nut seat 7 and seat 9 are vertically to reach 2 cross screws and fixing with 2, when knob 1 usefulness hand rotated, screw rod 2 rotated in nut seat 7, can drive worm gear case 6 and move up and down, so that 45 ° of oblique main shafts 10 move up and down, and form offset or accent " 0 " position.

5, multifunctional accurate orbital head according to claim 1, it is characterized in that: sled mechanism is by upper slide 35 and top board 37, and two V-type rails are arranged respectively all between the middle slide plate 36, there is steel ball the centre, there is not guide rail between middle slide plate 36 and the base plate 34, but steel ball is arranged, and four blocks of plates are passed from the pillar of four adjustment interference by four bolts 58, are being coupled to each other so that bear load.

6, multifunctional accurate orbital head according to claim 1, it is characterized in that: electrode horizontal rotation and vertical alignment mechanism by housing screw 23 with on butterfly spring 24 and the rotary disk 31 fastening present 22, overcoming under certain frictional force, rotary disk 31 rotatable certain angles, promptly by two adjustment screw 57 on the seat 22, top cover is fixed in the pillar 25 on the rotary disk 31, another just realizes that electrode has ± 5 ° of angles rotations when tight when a pine, can be in the direction of horizontal plane centering electrode, connect dish 29 in last four screws that connect on the dish 30 by fastening electrode again again, because steel ball of middle gland, so just, realize about electrode to and sagittal vertical centering, to guarantee electrode individual tram is arranged.