CN104107870A - Spring winding machine with an adjustable cutting device - Google Patents
Spring winding machine with an adjustable cutting device Download PDFInfo
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- CN104107870A CN104107870A CN201410156698.6A CN201410156698A CN104107870A CN 104107870 A CN104107870 A CN 104107870A CN 201410156698 A CN201410156698 A CN 201410156698A CN 104107870 A CN104107870 A CN 104107870A
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- China
- Prior art keywords
- track
- spring
- cutting
- cutting element
- driver
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/02—Coiling wire into particular forms helically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/02—Coiling wire into particular forms helically
- B21F3/06—Coiling wire into particular forms helically internally on a hollow form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
- B21F11/005—Cutting wire springs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F35/00—Making springs from wire
Abstract
The invention refers to a spring winding machine with an adjustable cutting device. A spring winding machine that manufactures helical springs (200) by spring winding includes a feed device that feeds wire (115) to a shaping device (120), wherein the shaping device has a winding tool (122,124) and a pitch die (130); a cutting device that separates a finished helical spring from the wire after termination of shaping, wherein the cutting device (152) has a cutting tool which, by a drive system, can be moved along a predefinable closed trajectory; a control device that controls the feed device, the shaping device and the cutting device on the basis of an NC control program; and a programmable trajectory-setting system that sets the shape and/or position of the trajectory to be passed through by the cutting tool, wherein a trajectory which is mirror-symmetrical with respect to a plane of symmetry and has a predefinable ratio of height to width.
Description
Technical field
The present invention relates to according to the preamble of claim 1, for reel to manufacture helical spring spring up-coiler by spring.
Background technology
Helical spring is need in many applications a large amount of and constructs different machine elements.Helical spring, is also referred to as coiling torsionspring, conventionally by spring wire, is manufactured, and depends on the load existing between the operating period, and helical spring is configured to extension spring or Compress Spring.For example in automobile production, need in a large number Compress Spring, particularly carriage spring.
Conventionally by spring, reel now, with digital control type spring up-coiler, manufacture helical spring.Herein, by means of feeding means, under the control of NC control program, wire rod (spring wire) is fed to the building mortion of spring up-coiler, and makes wire forming with the instrument of building mortion, to form helical spring.Instrument generally comprises one or more position adjustable coiling pin, reel pin for fastening, and if suitable words, for the local pitch by means of spring coil, change diameter and one or more pitch mould of spring coil, in each stage of process, determine the local pitch of spring coil.After shaping operation finishes, by means of topping machanism, under the control of NC control program, the helical spring having made be fed to wire rod and separate.
During the manufacture of spring, cutting type is usually very important, because helical spring some attribute that it has also been determined.Generally speaking, the cutting process of three types is distinguishing, is especially called as " straight cutting ", " rotary cutting " and " reversing cutting ".The in the situation that of straight cutting, it is mobile that cutting element carries out straight linearity cutting during cutting wire rod.The in the situation that of rotary cutting, the cutting edge of cutting element is guided along substantially oval-shaped track, so that cutting wire rod.In the situation that reversing cutting, wire rod mechanically loads, and it can be reversed and load separately.Reverse to cut can provide without burr and cut.In other cutting of two types, generally at cutting surface place, produce cutting burr, and in some cases, before further using helical spring, must remove cutting burr by scratch brushing, sandblast or polishing.
European patent application EP 0 804 979 A1 have described the member for the topping machanism of spring up-coiler, and it allows that topping machanism resets, to carry out alternatively straight cutting or rotary cutting, wherein, cutting element is guided along water-drop-shaped track.Cutting element remains in support, support in linear guide member can linearly moving mode being guided.Linear guide part is installed pivotly.CD-ROM drive motor is connected in support by power transmission shaft, eccentric part and connecting rod, and therefore can make cutting element produce linear moving around.Can make linear guide part produce pivotable by means of second driving shaft and move, second driving shaft works to linear guide part by eccentric part.CD-ROM drive motor can depart from second driving shaft alternatively, or engages with second driving shaft.If do not set to drive, do not connect, topping machanism carries out straight cutting.Second driving shaft be connected in CD-ROM drive motor during, the linear guide part pivotable of vibrating moves, therefore, the stack of moving due to straight Linear-moving and pivotable makes cutting element produce water-drop-shaped track.
Patent US 7,055, and 356 B2 have described the member for the topping machanism of spring production machine, and it is built into cutting element can be moved along substantially oval-shaped track.Can be by manually making sliding members change the shape of track along the displacement of linear guide part.
Publication number is the member that the Japanese patent application of JP 2001-293533A has shown the topping machanism of spring production machine.The antetheca of machine is provided can be along vertical direction mobile support linearly, and by power transmission shaft, eccentric part and connecting rod, it is feasible with CD-ROM drive motor, described support being moved up and down.Support can pivot element at its front side upper support, can pivot element supporting cutting element.Another CD-ROM drive motor makes this pivot element move around pivot axle generation pivotable by power transmission shaft and universal joint (having axial length compensation), and pivot axle is arranged in the sliding members in support.Can change the position of pivot element on support by means of another axle with universal joint, to change the position of cutting element on spring axial direction.
Summary of the invention
The present invention is directed to the problem of utilizing user-friendly spring up-coiler, can use this spring up-coiler by mode flexibly, and this spring up-coiler can be manufactured helical spring with high productivity level, according to helical spring specification, helical spring cross section, the cutting position of burr and the aspect of other spring parameter are optimized.
In order to address this problem, the invention provides the spring up-coiler of the feature with claim 1.Describe in the dependent claims favourable development in detail.The wording that all authority requires is all combined in the content of description by reference.
According to the spring up-coiler of the invention of statement, have programmable track initialization system, programmable track initialization system is for setting shape and/or the position of the track of instrument process to be cut.Track initialization system makes to set dissimilar otch in flexible and simple mode becomes possibility.Under this background, can set alternatively linear track (for straight cutting), symmetrical and there is ellipse or the egg type track of height-width ratio that can limit in advance about symmetrical plane mirror image, or there is profile asymmetric (, non-mirror image is symmetrical) track, this profile departs from respect to ellipse or egg type.Because these set selection, depend on application, especially feasible is the scope of application that expands straight cutting or rotary cutting, optimize output speed (machine output), the helical spring cross section of having optimized, the position of the cutting burr on the helical spring of having optimized, and/or the service life of prolongation cutting element, particularly the in the situation that of straight cutting.
Programmable track initialization system is used in the invention of statement, therefore be feasiblely, operator does not limit large-scale different tracks in the situation that the mechanical component of topping machanism is not carried out to manually intervention in advance to cutting element, and only by means of controlling to intervene, described track is programmed individually.
In a preferred embodiment, owing to making below to set, be selected to possibility: cutting element drive system has the first driver and the second driver, this first driver can be actuated by control device, and move for making cutting element produce first, this second driver can be independent of the first driver and controlled device startup, and for making cutting element produce second, move, second moves and is superimposed upon first and moves.Thereby can be relative to each other by the mobile different components of recently setting cutting of almost any expectation.
First moves the straight Linear-moving on first direction preferably, and second move preferably pivotable and move, and pivotable moves and is superimposed upon on Linear-moving, and transverse to first direction.It will be also feasible that two straight Linear-movings are superposeed in the direction being perpendicular to one another.
In a modification, cutting element is attached to support, support can move around along first direction linearly along linear guide part, and linear guide part is attached to pivot element, pivot element can be around the pivot axle pivotable of extending perpendicular to first direction, wherein, the first driver is connected in support, and the second driver is connected in pivot element.Therefore, provide the layout of special rigidity, even in the situation that cutting force is large, this is arranged and only produces relatively little heeling moment.It can will be also feasible on mobile linearly support that pivot element is attached to.
In instruction process, during to track programming, in a modification of spring up-coiler, use and only by means of the setting of power driver, determine the shape of cutting path (track of cutting element) and/or the possibility of position, manually to approach the profile of one, two, three or more marginal points or interruption, and therefore track is located to the run duration below, track always remains in the profile of these interruptions, and for example can not bump with reeler or pitch mould.Therefore, control device is configured to carry out the programming of instruction formula.This structure preferably makes in programming constructs, cutting element manually can be positioned to one or more position in the region of desired trajectory, the coordinate of position can be stored in the memory of control device, useful coordinate calculates track, and cutting element can be in operation structure, under the control of control device, along track, move.Approximated position is the point of interruption normally, and the point of interruption is defined as to the point that track must not overshoot.
In a modification, spring up-coiler is equipped with camera chain, and camera chain utilizes its picture field to catch substantially from above the region of the forming tool of (that is the direction that, is parallel to expectation spring wheel shaft).According to the image capturing with which, with image processing means, determine that the position of interruption profile is feasible.Can manually, semi-automatically or automatically carry out this determines.Therefore, virtual instruction process is feasible, and wherein, machine axis or instrument, particularly cutting element, needn't move.In this case, control device is also configured to carry out the programming of instruction formula.
These and other feature is not only produced by claim; and produced by description and accompanying drawing, wherein, independent feature all realizes separately; or be jointly embodied as the form that one embodiment of the present of invention neutralize the sub-portfolio in other field, and can formation itself can obtain the advantageous embodiment of protecting.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of the embodiment of spring up-coiler;
Fig. 2 and 3 shows the enlarged view of the member of building mortion and the various adjustable tracks of cutting element;
The various schematic diagrames of the member of the topping machanism of Fig. 4 to 6 demonstration Fig. 1;
Fig. 7 shows the view of the graphical operator interface therewith of assisting users setting track;
Fig. 8 shows the schematic diagram of various types of cuttings in 8A to 8E; And
Fig. 9 shows the plane of member of another embodiment of topping machanism.
The specific embodiment
Schematic diagram in Fig. 1 shows a plurality of structural details of CNC spring up-coiler 100 according to an embodiment of the invention.Fig. 2 to 6 demonstration details.
Spring up-coiler 100 has feeding means 110, feeding means 110 is equipped with feed rollers 112, and can be fed to the continuous part from wire rod stock of wire rod 115, this continuous part is guided through straightener 114, and has in the horizontal direction the digital control type pace profile in the region that enters into building mortion 120.In Fig. 2 and 3, clearly illustrate the member of building mortion.Wire rod is guided by wire rod guide member 116 on outlet side.Therefore feeding means also can be called as drawn-back device, and wire rod advances and also can be called as and draw in wire rod, and pace is called as the speed of drawing in.
Wire rod is being arranged in shape to form helical spring under the assistance at the numerical control instrument of building mortion 120.Instrument comprises two pins 122,124 of reeling, the pin 122,124 of reeling is arranged to depart from 90 ° of angles, and in the radial direction, with respect to the orientation for place of central axis 118 or expectation spring wheel shaft, and provide the pin the 122, the 124th of reeling, in order to determine helical spring diameter.During setting up along inclination bearing of trend and along continuous straight runs, can change for the basic setting of spring diameter the position of the pin of reeling, to different spring diameters is set up to machine.Can use suitable power driver, under the control of digitial controller, carry out these and move.
Pitch mould 130 has tip, and this tip is basically perpendicular to spring wheel shaft and orientation, and is engaged in the circle of unwinding spring nearby.Can be under the assistance of digital control type adjusting driver of corresponding machine wheel shaft that is parallel to the wheel shaft 118 of unwinding spring (that is, perpendicular to figure plane) envoy apart from mold movement.Therefore it is also referred to as " pitch is parallel " in this application.Wire rod before being pushed to during the manufacture of spring is being parallel in the direction of spring wheel shaft to be pushed open by pitch mould, corresponding to the position of pitch mould, wherein, the local pitch of the spring of the location positioning of pitch mould in corresponding section.Pitch mould carries out axis parallel meeting envoy apart from change during the manufacture of spring.
Building mortion can have another pitch mould, and this pitch mould can move from edge is vertical below, and has wedge shape mould tip, and when using this pitch mould, insert between adjacent windings this wedge shape mould tip.The adjusting movement of this pitch mould is extended perpendicular to wheel shaft 118.Therefore this be also referred to as " pitch is vertical " in this application.Can envoy engage apart from mould when needed.In specific spring winding process, typically engage only in pitch mould.
The topping machanism that can digitally control 150 with cutting element 152 is provided above spring wheel shaft, and after shaping operation finishes, the work that described cutting element 152 use limit is moved apart the helical spring of having manufactured and the wire rod stock being fed to.Cutting element is therefore mobile, and cutting element or its cutting edge 153 are moved in the plane perpendicular to wheel shaft 118 along the closed trajectory (cutting path) limiting in advance.Fig. 2 and 3 for example shows a plurality of feasible track BK1, BK3 by means of dotted line, also illustrates in detail in the back them.
Axle 155 (fine setting axle) is used as the relative element of cutting element, and is positioned at the inside of unwinding spring, and has oblique cutting edge 156, and during separation process, oblique cutting edge 156 interacts with cutting element 152.
Cutting element 152 is also referred to as cutting blade 152 below.The track of cutting element is also referred to as cutting curve, this track is defined as to the track that the cutting edge 153 of cutting element is advanced along it in the working face perpendicular to center-wheel arbor 118 of cutting element here.
Spring up-coiler or topping machanism are configured so that cutting path in structure qualification formula working range AB (in other words, during cutting is mobile, the track of cutting element) can set almost any expectation profile and change for.This setting does not need operator to intervene in mechanical component.But can use control module 102 by means of operator's control module 104 of spring up-coiler, come setting programming.Therefore the profile of track can, during the manufacture of spring, adapt to different conditions best.
By means of the track initialization system of freely programmable, here by control module 102 programming limit in advance cutting element shape and/or the position of track of process be feasible.In this article, except the cutting process of straight cutting and so-called rotary cutting, the asymmetric profile that setting has the track of non-mirror image symmetrical profiles is also feasible, non-mirror image symmetrical profiles departs from respect to ellipse or egg type, also can in traditional spring up-coiler (cutting element moves around along linear track), set straight cutting once in a while, in rotary cutting, in order to cut wire rod, cutting element is through ellipse or egg type track about symmetrical plane mirror image symmetry.
For this object, in an embodiment, cutting element drive system is provided, it comprises two power drivers 165,175, can control independently of one another power driver 165,175 by means of control module 102 (referring to Fig. 6), and power driver 165,175 is connected in cutting element 152, so that means of transportation moves.Two drivers are all electrical servo drivers.The first driver is used for making cutting element to move around along first direction 154 generation the first linearities, and first direction 154 extends along the longitudinal direction of cutting element 152.The second driver moves cutting element generation second, second moves and is superimposed upon this and first moves, and described the second driver is used as and actuates driver under exemplary cases, during moving around linearly along first direction at cutting element, actuate driver and make in addition cutting element generation pivotable move, around the axis perpendicular to working face, move to and fro.Due to basic, along vertical linearity of extending, move around and be superimposed upon pivotable and move, is feasible therefore cutting element is realized to track changeable.
Due to size and/or the amplitude that pivotable moves, the width (measuring perpendicular to first direction 154) of for example setting elliptical path is feasible.If carry out pivotable, do not move, make only to retain Linear-moving, can carry out straight cutting.Due to linearly moving size and/or amplitude, the in the situation that of rotary cutting, in the limit limiting in advance in configuration aspects, the height (being parallel to first direction measures) of setting elliptical path is feasible, the in the situation that of straight cutting, height is corresponding to the stroke on first direction 154.By limiting in advance the corresponding starting point of driver, the position that changes track is feasible in addition, and the position of elliptical path for example, to can locate best described track with respect to fine setting axle and wire rod.
The first driver and the member being associated thereof should utilize certain centrifugal mass, so that can utilize sufficient kinetic energy to cut.The second driver should have high power, to allow, makes where necessary mobile change rapidly.
In order further to illustrate, Fig. 2 illustrates the position of the remainder of cutting element 152.Fig. 3 shows such situation: during moving in the direction along wire rod, the cutting edge 153 of cutting element is accurately positioned at shock point 117 places on wire rod.Dotted line represents a plurality of feasible paths of the cutting edge of cutting element, in other words, and track.Due to the mechanical condition of exemplary embodiment, when the first driver and the second driver carry out their maximum stroke separately, cutting edge can be advanced in theory through roughly trapezoidal working range AB.In this working range, it is feasible drawing the almost track of any shape and position, wherein, certainly, necessary power conventionally make some track profile (the track profile for example with turning or sharp turn) cut movement during unrealistic.But, in working range, produce narrow or roomy ellipse, straight path, slant path, forming curve, along oval or other track of lateral deviation, be feasible.Therefore, the profile of cutting path can adapt to best actual conditions aspect control technology.
For example about Fig. 8, be illustrated in more detail below a plurality of examples of the particularly advantageous track under different working conditions.
The various schematic diagrames of the member of the topping machanism 150 of Fig. 4 to 6 demonstration Fig. 1, the member of topping machanism 150 is allowed and is set neatly different tracks.Substantially rectangular pivot plate 160 is rotatably installed on the horizontal pivot runner shaft 161 on the vertical antetheca 106 of spring up-coiler 100.By means of the pivotal axis 162 of horizontal orientation, realize pivotable back and forth and move, by means of the second driver 165, drive pivotal axis 162, the second drivers 165 as pivot drive.Pivotal axis 162 has eccentric bolt 163 at its front end place, eccentric bolt 163 carrying chaining parts 164, and chaining part 164 is guided in the rectangle recess of pivot plate 160, to can move along the longitudinal direction of pivot plate.
On the front side that deviates from pivot axle 161 of pivot plate 160, provide linear guide part 170, and linear guide part 170 is directed along the longitudinal direction of pivot plate, and bearing support 171, for the tool holder 155 of cutting element 152, is attached to support 171.Cutting element protrudes from tool holder at lower end.At upper end place, to provide connecting rod 172 by means of the pivotable mode of fastening bolt, described connecting rod 172 can ad infinitum regulate aspect its length, and is connected in eccentric bolt 173 at its other end place, and eccentric bolt 173 is positioned in the end side of cutting axis 174.By means of the first driver 175, drive cutting axis 174.
By means of control device 102, in mode independent of one another but that coordinate in principle, actuate the first and second drivers that each free electrical servo driver forms.Here, not " connection " that mechanically realizes driver, but on the contrary specially by means of software, in other words, by means of control program.This provides high degree of flexibility during making that cutting element generation work moves.
The first driver 175 drives the support 171 that is carrying cutting element 152 substantially along vertically carrying out linearity cutting, to move by cutting axis 174.By contrast, the pivotal axis 162 driving by means of the second driver 165 is only as actuating driver, and startup off and on, in other words, does not substantially carry out 360 ° of rotations.On the other hand, cutting axis 174 constantly moves with the rotary speed changing along identical direction of rotation, to can utilize the energy of separation process necessity and speed.But starting cutting driver (the first driver) off and on will be also feasible.For example, if the height of track in upward direction can realize highly and compare and reduce with maximum, this can be suitable.
The first driver 175 (cutting driver) and the second driver 165 (pivot drive) can be actuated independently of one another, so that in theory, the Linear-moving on first direction 154 is feasible with any expectation stack that the pivotable being in a lateral direction superimposed upon on Linear-moving moves.
Pivot element 160 can be fastened on vertical position by locked device, and locking device can be moved into and engage with pivot wall by means of machine order, or departs from pivot wall, and therefore, support 171 moves along vertical direction specially.Locking device can have for example bolt, and bolt can start by electronic or pneumatic mode, and (from machine side) moves in the drawbore the rear side of pivot plate from behind.By means of locking, be arranged in pivotable and move aspect and become freely without hindrance, and for vertical cutting, structural strengthening has occurred, so that can transmit large cutting force, and do not make the member excessive loads of topping machanism.
The track initialization system of embodiment is constructed in very user-friendly mode, and therefore experienced not even so operator also can carry out complexity setting to correct track intuitively.Fig. 7 is with the view of the mode display operation person control module of example, and operator's control module has graphical operator interface therewith, and graphical operator interface therewith is being set run duration assisting users.During the rectangular pattern that on the left side shows represents, in the lower edge of image, represent that the symbol 155' of the fine setting axle used is at present, the symbol 130' of retainer and the symbol 115' of wire rod of the pitch mould using at present.Instrument 155 and 130 forms relevant interruption profile under exemplary cases, during the track of structure cutting blade, must consider to interrupt profile.On correct position, they are shown, and they has correct size and compares in the figure being produced by control module 102.The dotted line extending obliquely in the extension of oblique cutting edge (inclined-plane in fine setting axle) correctly setting cutting gap during offer help.Cutting gap is defined as to cutting edge or dotted line here and extends to the track BK1 at shock point 117 places on wire rod or the vertical range between the tangent line of BK4 in parallel therewith.For optimized cutting result, this cutting gap should be substantially in scope between 30 ° and 70 ° of the diameter of wire rod.
At operator interface therewith place, make operator can use diagrammatic representation the right for setting the switching push button of trajectory parameters.Utilize top switching push button ELB, it is feasible by startup arrow key, between minimum of a value (0) and maximum (90), setting oval width.These values are relevant with oval constant altitude respectively.When preset lower limit ELB=0, therefore carry out straight cutting (linearity of cutting element moves around).
Switching push button VH below makes the flatly displacement between minimum of a value VH=0 and maximum of whole closed trajectory by starting arrow key.This horizontal displacement ability of track especially makes to use to different tracks identical instrument (axle, diameter).If only can regulate oval width, the middle of track will remain unchanged, and the shock point of cutting element on wire rod will move away from axle, or move along the direction of axle.Therefore machining condition will cardinal principle variation.In the situation that there is no lateral adjustment ability, cutting blade will must have slightly different cutting geometrical construction about each track in theory.
Feasible is allows to contact by means of software the adjusting of the adjusting of oval width and the horizontal level of track, makes to set not move or the parameter combinations of the position of slightly mobile shock point only, so that optimized cutting is still feasible.If suitable, when parameter matches each other when good not, can produce caution signal.
Can set by means of switching push button N below the inclination of track.Equal 0 value N corresponding to the track along vertical orientation (half long axis is vertical), and the in the situation that of negative value, track is towards left bank, in other words, along drawing in direction, tilt, and on the occasion of in the situation that, track is towards right bank, along the direction inclination of the pin of reeling.Switching push button VV below makes track all along vertical direction dislocation.With bottom switching push button D, input the value of current gauge or diameter of wire.It is feasible that other structure identical, equivalent or similar setting probability is finally provided.
Only the mode with example provides setting probability.Independent setting probability also can completely differently distribute.In fact available different mode realizes setting probability.For example some or all in parameter can be directly inputted to and control in software, therefore, the operator interface therewith with slip controller etc. is dispensable.The general not vertical adjustment programming to track, can realize by the length of manual adjustments connecting rod the vertical adjustment of track but change into.It is also feasible a plurality of track fundamental types that limit in advance that are for example optimized with respect to speed of production or other parameter being stored in the memory of control device.Then, these track fundamental types of operator's retrieval, and if suitable, then can fine regulate track fundamental type by changing independent parameter, and make track fundamental type adapt to the condition of the spring winding process of setting up at present.
In chapter below, with reference to Fig. 8, illustrate cutting and concrete application and the attribute of a plurality of selection types.If suitable, schematically show a part of cutting element SW, a part of fine setting axle DO, the end pieces of all the other wire rod DR with cutting burr SG and the track BK of the cutting edge of cutting element.Due to illustration, in exploded view, along vertical direction, show various elements.
System can be set for for straight cutting (Fig. 8 A), and wherein, cutting element is only along vertical mobile, and selects each in cutting element and fine setting axle for vertical cut sword.Therefore oval width and inclination set zero separately for.Wire rod halts, for cutting.Due to the type cutting, typically on wire rod, produce cutting burr SG, and cutting burr SG is along the direction of the central axis of spring to interior orientation.
System also can be set for and be rotated cutting or ellipse of revolution shape cutting (Fig. 8 B).Under this background, cutting element moves with vertical mobile component to move horizontally component in elliptical path, wherein, sets fixing height-width ratio.In this case, the cutting element using and fine setting axle will have oblique cutting edge or inclined-plane.Due to the cutting of the type, cutting burr is directed generally along the coiling direction of wire rod, so the internal diameter of spring is unrestricted, or restricted hardly.For this reason, only set oval width ELB for desired value.
Embodiment allows the cutting of these types, and conventional spring up-coiler usually also makes to utilize the cutting of these types, compared with prior art, and the cutting expanded range of these types, and there is the possibility of simplifying setting.Can modify to above-described straight cutting (instrument and blade together with thering is the fine setting axle of vertical cut sword along vertical mobile), to form modified straight cutting (Fig. 8 C).Under this background, also use cutting element and the fine setting axle with vertical cut sword.But cutting element is unspecial in vertical mobile, and has the mobile component of level slightly, therefore produces narrow ellipse (having adjustable height-width ratio).Also produce the direction of the main central axis along spring here to the cutting burr of interior orientation.But, due to slightly oval-shaped shape, therefore cutting element is after vertical cutting is mobile, in the less distance of cutting surface on cutting edge and wire rod, moving up, cutting element no longer contacts cut wire rod returning during advancing.Therefore, the wearing and tearing of instrument can reduce significantly.The height of substantially oval-shaped track and the typical case between width are than in can the scope between for example 5:1 and 30:1, particularly in the scope between 12:1 and 25:1.
In addition, rotary cutting can have a plurality of other modification.In the cutting of " cutting of rotation changeably " type (Fig. 8 B), stop drawing in wire rod and carry out cutting operation.Use blade (cutting element) and there is the fine setting axle of oblique cutting edge.The cutting edge of instrument moves along the ellipse with height-width ratio that can differently regulate, typically in the situation that relatively narrow the oval of medium-width that arrive.In this case, with " pitch is vertical " or " pitch is parallel " operation, be feasible.Produce the cutting burr of substantially arranging along the coiling direction of wire rod.Therefore, cutting burr is in the inside and outside envelope curve of spring, and in other words, cutting burr is not inside or outwardly over spring.
In the situation that the cutting (Fig. 8 D) of " flight rotary cutting " type, spring up-coiler constantly advances or draws in wire rod and flight rotary cutting moves with wire rod.Under this background, cutting element moves with vertical mobile component to move horizontally component in the elliptical path with relative wide ellipse (in other words, relative to little height-width ratio).Therefore, during cutting, realize the relatively high component that moves horizontally.Cutting element and fine setting axle have corresponding oblique cutting edge separately.Here, for example use normal pitch (lower pitch mould) to carry out operation.Depend on design, rotate and can be ellipse, or even circular.Velocity of rotation is normally inhomogeneous.
Due to this type of operation that has the wire rod of spiraling cutting and constantly advance, wire rod, with constant or indefinite final pace, constantly advances or draws in.Therefore, wire rod is fed to and is producing many continuous can not stop during helical spring.Therefore, output speed improves.If advancing of wire rod continues always, wire rod stock (for example remaining on spool) needn't accelerate constantly and brake.This is also applicable to the driver of feeding means and instrument.Therefore, advance to stop carry out method working angles, that have fixing cutting and compare with wire rod wherein, the energy requirement of each spring reduces.In addition, wire rod is not jerked, and there is no stick-slip effect, therefore, compare with the method with fixing cutting, the quality of the spring of manufacture can significantly improve.
In " flight cutting " operational mode, cutting element coordinates automatically along the translational speed of track and the speed of drawing in of wire rod, make the velocity of rotation of the applicable cutting element of shape of track, make in the time interval before cutting edge is penetrated in wire rod, before the cutting contact between cutting element and wire rod is eliminated, the translational speed that cutting edge (is basically parallel to wire rod direction of advance) is in the horizontal direction higher than wire rod pace.If that time interval that wherein cutting element engages with wire rod is called as " wire rod collision area ", cutting element should accelerate, made before starting cutting, the horizontal component of cutting element (being parallel to wire rod pace) is larger than the horizontal component of wire rod, and before moving away wire rod, again do not drop to the speed lower than wire rod.Due to this reason, in this operational mode, substantially must set relatively large width and the translational speed of large horizontal component correspondingly to flat elliptic track.
The elliptical path of the cutting element of here describing in the mode of example is a plurality of special shapes of feasible track on formational theory only.Curve B K3 in Fig. 2 forms height-width than an example of limited asymmetrical optimization trajectory shape.Due to this curve, during cutting, obtain the advantage identical with oval crooked route BK1, but pitch mould 130 needs less space, therefore such trajectory shape can be in the situation that the condition that is tied in the region of forming tool be particularly useful.Can be susceptible to many other path shapes, for example the flattened oval (Fig. 8 E) in the region on the inclined-plane in axle in fine setting even.Here, cutting path for example can be configured so that flat part is parallel to profile and is mainly the inclined-plane in linear fine setting axle and extends.By means of suitable distortion, it is feasible that the basic configuration based on ellipse or egg type is set many useful asymmetric trajectory shapes.
Constraint to the track of possible in theory, on the one hand, causes by interrupted edges or with the point of impingement of other instrument (such as coiling finger or pitch mould), and on the other hand, by power or the Efficiency Limit of CD-ROM drive motor, is regulated.Carry out therein especially can considering these peripheral conditions in the method modification of instruction formula programming.In the method modification, operator manually approaches the potential collision point in the region of forming tool with cutting element.When cutting element is positioned at point of impingement place, operator is sent to controller by input by this position, in other words, is communicated to controller.By using these positions, then automatically calculate track, the crooked route that these collision areas are selected from operator, get rid of, or keep off, but walk around these collision areas.
The invention of statement is allowed alternately or is solved cumulatively different technical problems.On the one hand, compare with the conventional system with straight cutting and rotary cutting, the scope of application expands.Feasible in the situation that, also can optimize output speed and/or machine output.In many cases, optimize the cross section at cutting wire rod place.In addition, can use or further processing optimization of spring is remained in to the cutting burr position on wire rod with respect to expection.At least, suitable setting can extend the service life of cutting element, particularly the in the situation that of straight cutting.
By set position and the inclination of track or crooked route during working angles, in other words, when cutting element contact wire rod, can determine the inclination of cutting edge on wire rod.In addition, by means of these, set probability, determine that inclination or the position of remaining cutting burr is feasible.During modified straight cutting (narrow ellipse), the smear metal of processing cutting sword, and prevention lightly, because after cutting completes, wire rod edge moves apart cutting element is removed to the side direction cross force that wire rod causes along side direction.
Due to the possibility to various track programmings, compare from the conventional spring up-coiler of likely setting different tracks, can in the situation that spring up-coiler not being carried out to mechanical intervention, more easily set these advantages.
Fig. 9 shows the different structure modification of the member of the topping machanism that above-described all setting probability are provided equally.Here, by the fastening cutting element 952 of tool holder, be also arranged on support 971, support 971 by linear guide part 970 with linearity movably mode guide.Linear guide part is arranged on plate shape pivot element or pivot plate 960, and pivot plate 960 is rotatably installed on horizontal pivot runner shaft, and horizontal pivot runner shaft is attached to the vertical antetheca of spring up-coiler.Provide two independent drivers can being actuated by control device 902 independently of one another to carry out Linear-moving and pivotable moves.The first driver 975 drives horizontal cutting axle 974, and horizontal cutting axle 974 has eccentric bolt at its end side place, and eccentric bolt is rotatably installed in chaining part.In the recess of chaining part in support 971, be guided, so that can be with respect to the longitudinal direction of support dislocation vertically.With which, cutting axis rotation makes support 971 move up and down along first direction 954, that is, and and along the longitudinal direction of pivot element 960.The second driver 965 make pivot element back and forth oscillatorily pivotable move, the second driver 965 is in mode intermittently or drive to and fro pivotal axis 962.Described pivotal axis 962 has eccentric bolt in its end side, and eccentric bolt is rotatably installed in chaining part, is guided, to can move along its longitudinal direction in the recess of chaining part in pivot element 960.
In this embodiment, therefore pivotal axis 962 is arranged in cutting axis 974 tops.In contrast, the layout of the embodiment in Fig. 4 to 6 (wherein, cutting axis is seated in pivotal axis top) is turned around.Therefore, these mechanical components of cutting element drive system can, according to available safe space and other requirement, relative to each other be constructed and arrange in a different manner.
Claims (8)
1. one kind for reeling to manufacture the spring up-coiler (100) of helical spring (200) by spring, comprising:
For wire rod (115) being fed to the feeding means (110) of building mortion (120),
Wherein, described building mortion has at least one reeler (122,124) and at least one pitch mould (130),
Topping machanism (150), it is for after shaping operation finishes, the helical spring separately completing and the wire rod being fed to, wherein, described topping machanism has cutting element, and by means of cutting element drive system, described cutting element can move along the closed trajectory that can limit in advance;
Control device (180), it is for control described feeding means, described building mortion and described topping machanism based on NC control program,
It is characterized in that,
Programmable track initialization system, it is for setting shape and/or the position of the track of described cutting element process, wherein, can set alternatively linear track, symmetrical and there is ellipse or the egg type track of height-width ratio that can limit in advance about symmetrical plane mirror image, or the asymmetric track with non-mirror image symmetrical profiles, described non-mirror image symmetrical profiles departs from respect to ellipse or egg type.
2. spring up-coiler according to claim 1, it is characterized in that, described cutting element drive system has the first driver (175, 975) and the second driver (165, 965), described the first driver (175, 975) can be by described control device (102, 902) actuate, and for making described cutting element (152, 952) producing first moves, described control device does not rely on described the first driver and starts described the second driver (165, 965), and described the second driver (165, 965) for making described cutting element produce second, move, described second moves and is superimposed upon described first and moves.
3. spring up-coiler according to claim 2, it is characterized in that, described the first driver (175, 975) be designed so that described cutting element is along first direction (154, 954) producing the first linearity moves around, described first direction is along described cutting element (152, 952) longitudinal direction extends, and described the second driver (165, 965) be embodied as and actuate driver, during carrying out along described first direction at described cutting element that described linearity moves around, the described driver of actuating makes described cutting element generation pivotable move in addition, around the axis extending perpendicular to working face, move around.
4. according to the spring up-coiler described in claim 2 or 3, it is characterized in that, described cutting element (152, 952) be attached to support (171, 971), described support (171, 971) can be along linear guide part (170, 970) along first direction (154, 954) move around linearly, and described linear guide part is attached to pivot element (160, 960), described pivot element (160, 960) can be around the pivot axle pivotable of extending perpendicular to described first direction, wherein, described the first driver (175, 975) be connected in described support, and described the second driver (165, 965) be connected in described pivot element.
5. according to the spring up-coiler described in any one in aforementioned claim, it is characterized in that, described control device (102,902) is configured to carry out the programming of instruction formula.
6. spring up-coiler according to claim 5, it is characterized in that, described control device is configured so that in programming constructs, can be manually by described cutting element (152,952) be positioned at one or more position in the region of desired trajectory, the coordinate of described position can be stored in the memory of described control device, can calculate track with described coordinate, and described cutting element can be in operation structure, under the control of described control device, along described track, move.
7. according to the spring up-coiler described in any one in aforementioned claim, it is characterized in that, described track initialization system is configured to allow that at least three in following setting are independent of one another:
(i) the oval width of the described track between the minimum of a value 0 of linear interpolation and the maximum relevant with the maximum height of described ellipse;
(ii) horizontal shift of the whole track between minimum of a value and maximum;
(iii) along value 0, the inclination of described track in the direction of described feeding means and the inclination of the described track between the inclination in the opposite direction of described track of the track of vertical orientation;
(iv) all displacements in described vertical direction of described track.
8. according to the spring up-coiler described in any one in aforementioned claim, it is characterized in that, described feeding means is configured to be fed to continuously described wire rod, and described topping machanism (150) has driven cutting element (152) when rotated, wherein, described spring winding mechanism causes the helical spring having made and the wire rod being fed to be cut and separated by spiraling.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013207028.4 | 2013-04-18 | ||
| DE102013207028.4A DE102013207028B3 (en) | 2013-04-18 | 2013-04-18 | Spring coiling machine with adjustable cutting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104107870A true CN104107870A (en) | 2014-10-22 |
| CN104107870B CN104107870B (en) | 2017-09-22 |
Family
ID=50473108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410156698.6A Expired - Fee Related CN104107870B (en) | 2013-04-18 | 2014-04-18 | Spring winding machine with adjustable topping machanism |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20140311204A1 (en) |
| EP (1) | EP2826572B1 (en) |
| CN (1) | CN104107870B (en) |
| BR (1) | BR102014009461A2 (en) |
| DE (1) | DE102013207028B3 (en) |
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| CN113365755A (en) * | 2019-02-06 | 2021-09-07 | 日本发条株式会社 | Winding machine, manufacturing method of spiral spring and spiral spring |
| CN113669396A (en) * | 2021-08-20 | 2021-11-19 | 安庆谢德尔汽车零部件有限公司 | Compression spring with prepressing end and winding and detecting method thereof |
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| CN107731571A (en) * | 2017-09-20 | 2018-02-23 | 南通南铭电子有限公司 | A kind of Full-automatic capacitor draws line shearing welder and method of work |
| CN107731571B (en) * | 2017-09-20 | 2024-02-20 | 南通南铭电子有限公司 | Full-automatic capacitor outgoing line shearing and welding device and working method |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20140311204A1 (en) | 2014-10-23 |
| BR102014009461A2 (en) | 2015-01-06 |
| EP2826572A1 (en) | 2015-01-21 |
| DE102013207028B3 (en) | 2014-06-26 |
| EP2826572B1 (en) | 2019-09-11 |
| CN104107870B (en) | 2017-09-22 |
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