CN1718348A - Electric spark processing technical method of group electrode having large quantity micropore and its device - Google Patents

Abstract

An electric spark technology with an electrode cluster for machining many orifices on textile machinery is disclosed. Its apparatus is composed of electrodes, working liquid, working liquid bath, two screw-regulated square trough-type structural parts, a locator with multiple V-shaped slots for said electrodes, elastic regulating pads for electrodes, and connecting axles for electrodes.

Description

The electric spark processing technical method of group electrode having of large quantity micropore and device

Technical field belongs to electric discharge machining method and device field, is applied in the textile machine equipment manufacture field.

Background technology according to statistics, the manufacturing output value of China accounts for 35% of whole gross national product (GDP), the manufacturing output value of light textile accounts for 30% of the whole manufacturing industry output value.In textile industry, a large amount of cloth need pass through the production process of gluing, coating treatment process such as painted.Wherein, the roller that is coated with in the complete textile machine equipment is the critical component that the cloth coating process is handled, and is determining efficient, accurate mechanical performance index, the quality of processing performance and cloth thereof and the specification requirement index of complete textile machine.Therefore, the processing that is coated with roller is one of key technology of textile machine equipment with being shaped.Be coated with the difficult point that is processed with following several respects of roller:

(1) aperture is little, is generally 0.4mm-1.5mm; Quantity is many, and measure greater than 100,000 in the hole; Arrange closely, two hole wall minimum spacings are 0.4mm-1mm; Part and the overall alignment precision and the reliability requirement height of aperture on the full roll surface.

(2) processing is long in time limit, cost is high: with forming hole methods such as traditional mechanical drill or milling cutters, be difficult to satisfy the hole creating technology requirement that is coated with aperture in enormous quantities on the roller.Even adopt digital control hole drilling, hole milling, can guarantee the hole site precision of certain limit, still, because little, the poor rigidity of tool dimension, on the face of cylinder boring poor to neutrality, eccentric easily, and because hole count is many, be easy to generate problems such as tool wear or fracture, and cause percent defective to increase.

(3) labour intensity is big: if lathe is operated in the higher pincers worker of the level of employing, can guarantee the pore-forming positional precision of some apertures, still, because the quantity of aperture causes operator's labour intensity big greatly, be difficult to guarantee the overall alignment precision and the reliability of aperture.

(4) to be not less than the conventional forming hole method of 2.5 aperture in enormous quantities few for the aspect ratio of aperture: except that the mould pore-forming, and forming hole method in batches when not seeing other big aspect ratio micro hole.

Summary of the invention the present invention seeks to solving the pore-forming process technology difficult problem of micro hole in enormous quantities, for the processing of the key components and parts in the textile machine equipment-be coated with roller provides efficient, reliable, high-quality key manufacturing technology method, with the part of satisfying aperture on the full roll surface and the requirement of overall alignment precision and reliability; Reduction of erection time, reduce cost, reduce labor intensity.

The technical solution used in the present invention: a kind of group's electrode electric discharge machining apparatus of large quantity micropore is made up of electrode, electric spark machining working solution 12, working liquid container 13, group's electrode that electrode is made up of M single electrode 9; Also have two spirals to adjust square groove type structural member 4, each one at two ends, on spiral adjustment square groove type structural member 4, be equipped with and adjust pinching screw 16, adjust in the square groove type structural member 4 at spiral, group electrode V-type groove of packing into is located storehouse 14, be processed with M V-type groove on group's electrode V-type groove location 14, single electrode 9 be installed, in each V-type groove by director element 10 guiding; On M single electrode 9, be equipped with and compress elasticity adjusting pad 15, but regulator board 3 is installed in and compresses on the elasticity adjusting pad 15; One end of group's electrode coupling spindle 2 is connected on group storehouse 14, electrode V-type groove location, and the other end and machine tool chief axis 1 connect; Be installed on the workpiece location V shape iron 7 on the workbench 8 large quantity micropore class part 11 is installed, an end of large quantity micropore class part 11 is equipped with ring flange 5, and coupling spindle on the ring flange 5 and dividing head 6 link.

A kind of electric spark processing technical method of group electrode having of large quantity micropore, adopt group's electrode to realize the aperture shaping processing technology of mass simultaneously: for slewing parts, at first adjust the positive part machining benchmark of group's electrode pair, it is initial round place straight line (or claiming bus), axially initial and part time job left side of face benchmark aligns, after the positioning and fixing, process M aperture on article one bus; Operate the angle of rotation that drawing that indexing mechanism makes work piece rotate adjacent row requires size then, simultaneously, the operation element platform is to the right translation work piece, and displacement is 1/2 adjacent holes centre distance, after the positioning and fixing, processes M aperture on the second bus; Successively, operate indexing mechanism again and make work piece rotate adjacent row's a angle of rotation, simultaneously, the operation element platform is to the left work piece, and displacement is 1/2 adjacent holes centre distance, after the positioning and fixing, processes M aperture on the 3rd bus; Constantly repeat said process, promptly adjacent row rotates an angle of rotation, simultaneously, an axial left side that is odd number row aligns, and is that even numbers row's the axial right side aligns, until processing N row, be last row's aperture, the part that processes the even intersection grid arrangement of M * N micro hole altogether comes.

Electric spark processing technical method of group electrode having for plane class part large quantity micropore is the indexing of adjacent round, with the mobile replacement in the plane, realizes that the plane class evenly intersects group's electrode spark machined of large quantity micropore of grid arrangement.The present invention adopts unipolar electrical signal detection method, by controlling all single electrode signal of telecommunication uniformities, guarantees the orifice size unanimity, promptly guarantees hole arrangement uniformity.

Group's electrode method spark machined composite technology parameter area is: voltage V _Always=24-30V, current density I _{On average}=10-100A/cm ², near the micro hole machining of 0.4mm size, voltage and current density is got the lower limit of recommended parameter, and near the aperture processing of 1.5mm size, voltage and current density is got the upper limit of recommended parameter, pulse width t _OnWith pulse spacing t _OffBe the scope of millisecond, t to a few tens of milliseconds magnitude _OnWith t _OffRatio in the 0.6-0.8 scope, to guarantee the stability of whole machining state.

Invention effect: adopt group's electrode method, successfully produce and be used for being coated with the roller part on the textile machine production line, fully satisfied the drawing specification requirement that is coated with the roller type component, comprise every size, shape, positional precision and quality requirement.The precision height, cost is low, and the production efficiency of single-piece work improves 10-20 doubly.

Description of drawings 1-large quantity micropore group electrode method electric spark hole-forming device sketch; Fig. 2-be group's electrode structure cutaway view of Figure 1A-A.Wherein: 1-machine tool chief axis, 2-group's electrode coupling spindle, but 3-regulator board, the 4-spiral is adjusted square groove type structural member, 5-ring flange, 6-dividing head, 7-workpiece location V shape iron, 8-workbench, the single electrode of 9-, the 10-director element, 11-large quantity micropore class part, 12-electric spark machining working solution, the 13-working liquid container, storehouse, 14-group's electrode V-type groove location, 15-compresses the elasticity adjusting pad, and 16-adjusts pinching screw.

Fig. 3-be coated with roller part drawing.

The processing of Fig. 4-employing group electrode electric discharge machining method be coated with roller part photo in kind.

The specific embodiment is described with reference to the accompanying drawings enforcement of the present invention, as to be coated with roller diameter be 220mm, face length is the roller that is coated with of 1100mm, requirement processes 14.4 ten thousand (axial 400, circumferential 360) being coated with on the roll surface, diameter is 1.3mm, the degree of depth is the logical aperture of 3mm, and the center, hole is pressed the distribution relation of grid intersection and arranged, and sees accompanying drawing 3.Orientation distance and adjacent row's scale division at every row's adjacent holes center are 2.4mm, the calibration distance is circumferentially rotated 1 ° of angle by adjacent row and is realized, the wall thickness the most nearby of aperture is 0.9mm, at the forming technique requirement that is coated with large quantity micropore on the roller, adopt group's electrode electric spark hole forming method and device in batches, see accompanying drawing 1,2.Method is as follows: the preparation before (1) spark machined, according to the drawing requirement, determine the single electrode size, and diameter is 1.1mm, promptly puts the electrical guiding rule conciliation and is monolateral discharging gap 0.1mm, satisfies the 1.3mm aperture of drawing requirement, length 58mm; Group's electrode structure is made by 400 single electrode V-shaped grooves (groove depth 1mm, 90 ° at V-arrangement angle, spacing 2.4mm) and is formed storehouse 14, group's electrode V-type groove location, adjusts square groove type structural member 4 with spiral and constitutes whole group's electrode.(2) spark machined begins, at first install on the setting element that is coated with in roller and the working liquid container to be processed, left end connects with the calibration ring flange, retrains 5 frees degree altogether, the Up Highway UHW of this moment is the initial row of processing, guarantees the fixed position of process system process with the gravity that is coated with roller; Then, connect group's electrode on the machine tool chief axis head, group's electrode processing end aligns the Up Highway UHW that is coated with roller, is coated with roller and connects power cathode, and group's electrode connects positive source.(3) the electric spark parameter is set, voltage V _Always=30V, current density I _{On average}=80A/cm ², pulse width t _OnWith pulse spacing t _OffBe the scope of millisecond, t to a few tens of milliseconds magnitude _OnWith t _OffRatio get 0.6, to guarantee the stability of whole machining state.(4) the positive part machining benchmark of group's electrode pair is adjusted in operating process, promptly initial round place straight line, and group's electrode electric spark pore-forming after the positioning and fixing, processes 400 apertures on article one bus by row; Operate angle of rotation 1 degree that drawing that indexing mechanism makes work piece rotate adjacent row requires size then, simultaneously, the operation element platform is to the right translation work piece, and displacement is 1/2 adjacent holes centre distance, after the positioning and fixing, process 400 apertures on the second bus; Successively, operate indexing mechanism again and make work piece rotate adjacent row's a angle of rotation 1 degree, simultaneously, the operation element platform is to the left work piece, and displacement is 1/2 adjacent holes centre distance, after the positioning and fixing, processes 400 apertures on the 3rd bus; Constantly repeat said process, be that adjacent row rotates an angle of rotation, simultaneously, an axial left side that is odd number row aligns, the axial right side that is even numbers row aligns, until processing n row, it is last row's aperture, adjust grid intersection position/calibration and displacement successively, process the micro hole that meets the drawing requirement, be coated with on the roller part a large amount of aperture results and be: circumferential 360 rows, 400 diameters of every row are 1.3mm, every row's adjacent holes centre-to-centre spacing and adjacent row's scale division are 2.4mm, add up to ten thousand apertures of 360 * 400=14.4, see accompanying drawing 4.

Claims (2)

1, a kind of group's electrode electric discharge machining apparatus of large quantity micropore is made up of electrode, electric spark machining working solution [12], working liquid container [13], it is characterized in that group's electrode that electrode is made up of M single electrode [9]; Also have two spirals to adjust square groove type structural member [4], each one at two ends are equipped with on spiral adjustment square groove type structural member [4] and are adjusted pinching screw [16]; Adjust in the square groove type structural member [4] at spiral, group storehouse [14], electrode V-type groove location of packing into is processed with M V-type groove on the group electrode V-type groove storehouse, location [14], and single electrode [9] is installed in each V-type groove, is led by director element [10]; Be equipped with on M the electrode [9] and compress elasticity adjusting pad [15], but regulator board [3] is installed in and compresses on the elasticity adjusting pad [15]; One end of group's electrode coupling spindle [2] is connected on group electrode V-type groove storehouse, location [14], and the other end and machine tool chief axis [1] connect; The workpiece location V shape iron [7] that is installed on the workbench [8] is gone up installation large quantity micropore class part [11], and an end of large quantity micropore class part [11] is equipped with ring flange [5], and coupling spindle on the ring flange [5] and dividing head [6] link.

2, a kind of electric spark processing technical method of group electrode having of large quantity micropore, it is characterized in that adopting group electrode to realize the aperture shaping processing technology of mass simultaneously: for slewing parts, at first adjust the positive part machining benchmark of line style group electrode pair, it is initial round place straight line (or claiming bus), axially initial and part time job left side of face benchmark aligns, after the positioning and fixing, process M aperture on article one bus; Operate the angle of rotation that drawing that indexing mechanism makes work piece rotate adjacent row requires size then, simultaneously, the operation element platform is to the right translation work piece, and displacement is 1/2 adjacent holes centre distance, after the positioning and fixing, processes M aperture on the second bus; Successively, operate indexing mechanism again and make work piece rotate adjacent row's a angle of rotation, simultaneously, the operation element platform is to the left work piece, and displacement is 1/2 adjacent holes centre distance, after the positioning and fixing, processes M aperture on the 3rd bus; Constantly repeat said process, promptly adjacent row rotates an angle of rotation, simultaneously, an axial left side that is odd number row aligns, and is that even numbers row's the axial right side aligns, until processing N row, be last row's aperture, processing altogether, the part of the even intersection grid arrangement of MxN micro hole comes;

Electric spark processing technical method of group electrode having for plane class part large quantity micropore is the indexing of adjacent round, with the mobile replacement in the plane, realizes that the plane class evenly intersects group's electrode spark machined of large quantity micropore of grid arrangement.The present invention adopts unipolar electrical signal detection method, by controlling all single electrode signal of telecommunication uniformities, guarantees the orifice size unanimity, promptly guarantees hole arrangement uniformity;

Group's electrode method spark machined composite technology parameter area is: voltage V _Always=24-30V, current density I _{On average}=10-100A/cm ², near the micro hole machining of 0.4mm size, voltage and current density is got the lower limit of recommended parameter, and near the aperture processing of 1.5mm size, voltage and current density is got the upper limit of recommended parameter, pulse width t _OnWith pulse spacing t _OffBe the scope of millisecond, t to a few tens of milliseconds magnitude _OnWith t _OffRatio in the 0.6-0.8 scope, to guarantee the stability of whole machining state.

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