CN1326650C - Main shaft structure of center cutting machine - Google Patents

Abstract

The present invention discloses a main shaft structure of a center cutting machine. A clutch is directly arranged on a main shaft, is connected with a power source and then is engaged with or separated from the power source by the shaft coupling sleeve of the main shaft to match the guiding control of an oblique guide groove on the rotating disk of the clutch, the power source can be directly switched to make the driving rotation of the main shaft or displacement operation for a draw rod to control the looseness or clamping of the shaft sleeve of the cutter so as to match the cuter replacing and selecting operation of a cutter replacing device, and then a main shaft structure which uses the power source to directly drive the main shaft to rotate, switches the power source in real time to be used power for the displacement operation of the draw rod, has no need of being additionally provided an ail pressure device as driving force, greatly reduces the number of disk springs and simplifies a center cutting machine of a mechanism is formed.

Description

The main axle structure of central cutting machine

Technical field

The present invention relates to a kind of main axle structure of central cutting machine, referring in particular to a kind of oil pressure that needn't utilize again links, but utilize the clutch that power source drove of this main shaft and the element of relevant collocation thereof, can directly make the clamping or the unclamp operation of required cutter, and reach the main axle structure that the disc spring group that significantly reduces brute force is established quantity and had the central cutting machine special use of more firm and clear and definite operating characteristic by this.

Background technology

Shown in Figure 14,15, be the main axle structure of central cutting machine, this main axle structure 8 cooperates axle sleeve 82 for being nested with collar bush 83 by main shaft axle bed 81; The oil circuit 841,842 of the oil gear 84 that the endoporus 811 of main shaft axle bed 81 assembles, making it can driven plunger 843 start.The bulge loop 851 that the mesopore 844 of piston 843 links pull bar 85 makes it the displacement with start.Utilize a shaft coupling 86 affixed with the force-output shaft 871 of power source 87 again in main shaft axle bed 81 tops, the through hole 872 of this force-output shaft 871 can connect power source 87 other swivel joints 88 of end and send the cooling during as cutting so that required cooling water to be provided from pull bar 85.

By above-mentioned structure as can be known, pine folder or the clamping of the driving of oil gear 84 with control cutter axle sleeve 89 is dependent in the start of pull bar 85 fully; And among the endoporus 811 of these oil gear 84 dark plant main shaft axle beds 81, its into and out of oil circuit 841,842 design and processing, comparatively difficulty is installed all, fault is got rid of and maintenance is difficult for especially, for the processing operating efficiency and the flow process of production line suitable adverse influence is arranged.

Moreover oil gear must cooperate higher oil pressure unit of cost and control appliance more in addition, and has the quite irritating leakage of oil and the problem of grease, and the carrying cost of daily operation is also high.In addition, with the fuel feeding of oil pressure unit, when the power failure of not early warning or oil hydraulic system fault are malfunctioning, can produce and to operate and unexpected; So make the main axle structure of the operation of forward and back cutter with the oil pressure actuated pull bar many shortcomings are arranged.

In addition, please consult shown in Figure 16 again, be another common main shaft 9, enough elasticity is arranged and suitable clamping power is provided for reaching, outside pull bar 91, can be nested with the disc spring 92 of many brute forces, the push rod 93 that cooperates the top to articulate again to be connected with, make push rod 93 in addition the power source that is connected with of end can drive this pull bar 91 and do oscilaltion for clamping or decontrol operation the cutter axle sleeve.Though utilize disc spring 92 can reach required elasticity and clamping strength, but the deformation displacement amount when each sheet disc spring 92 is stressed is quite little, the upper and lower displacement that is unable to cope with pull bar 91 is required, so disc spring 92 need be stacked with suitable quantity alternately, from shown in this figure as can be known, its stacked quantity is quite a lot of, the length of accumulation almost is half length of whole pull bar 91, causes group to establish inconvenience, and can produce noise when rotating with main shaft, also can influence gravity balance, be unfavorable for the application of high speed type.

In view of this inventor for overcoming the shortcoming of known configurations, provides a kind of main axle structure of central cutting machine special use of innovation.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of main axle structure of central cutting machine, top by this main shaft directly is provided with power source (as the servo motor of high-power) as the power that rotates, and directly the control of drive shaft engagement clutch and this clutch rotating disk is to drive the pull bar start, the disc spring that adds a small amount of brute force is auxiliary to reach the purpose of certain clamp-on tool axle sleeve, and also utilize this power source directly to reach when loosening, do not need to be provided with in addition again costliness, reliability is not good and can produce the hydraulic pressure control device of many shortcomings, to avoid hydraulic pressure fuel feeding and shortcoming that control system was produced, can reduce the inertia of integral drive-system, can significantly shorten the time that main shaft quickens, become a kind of main axle structure that can effectively increase work efficiency with the central cutting machine of speed.

For solving the problems of the technologies described above, the present invention proposes a kind of main axle structure of central cutting machine, include:

One axle bed, in have all multiple bearings just can organize to establish collar bush;

One collar bush, the bottom of collar bush are provided with taper hole can do required processing with clamped tool for organize the insertion of establishing the cutter shaft cartridge clip that links cutter in the future;

One pull bar is placed in the collar bush, and the bottom of pull bar has jaw and can cooperate the interior interior scrobicular ring of collar bush with the clamped tool axle sleeve; And interior tool mesopore is for being nested with conduit; Wherein:

Be provided with coupling band and bearing block in the top of collar bush, and in be equipped with a disc spring and a movable spacer ring; Have outer croze key just to make the slip fit with the socket clutch outside the coupling band, and a sheathed spacer lug between coupling band and the bearing block, and bearing block removes group outward and is provided with the bearing with the interior croze key of clutch, in be provided with many shrinkage pool confessions and organize and establish spring and push rod; Be respectively equipped with thrust bearing between the end face of push rod and the upper surface of movable spacer ring, the flange that this two thrust bearing is held in the lower link swivel nut just is both ends of the surface up and down;

Also be provided with many shrinkage pools in the clutch for putting spring and push rod, make the end face of push rod be held in the upper surface of spacer lug just, make this clutch that the one elasticity strength to top offset can be arranged, and this clutch upper and lower end is respectively equipped with upper and lower engaging tooth, utilize engaging tooth down to do correspondingly to snap in engagement or separate with the engaging tooth of the retainer ring of the upper surface of being fixed in axle bed, utilizations in engaging tooth just can with bearing block on utilize the engaged claw work of the claw-type clutch that bearing is pivoted to mesh or separate;

The pull bar epimere has threaded section, this threaded section can be simultaneously for screwing togather the lower link swivel nut, be provided with the engaged claw location that can be meshing with each other between this upper and lower pull bar swivel nut, and activity is inserted in claw-type clutch on the flange of upper connecting rod swivel nut, and equidistantly be provided with many latches that outwards sets firmly on the flange of upper connecting rod swivel nut, it is movable be arranged in claw-type clutch straight slotted hole in after convexedly stretch in the surface of this claw-type clutch, the outer end of many latches is provided with an inductance loop by this;

Claw-type clutch is done the pivot bush unit transmission with the outer croze key of interior croze key and outside link swivel nut except that having engaged claw and straight slotted hole, the upper surface is provided with locating ring and screw in addition;

The cam ring seat utilizes bolt and retainer ring affixed, and be set in outside the clutch just, the many inclined guide grooves of tool in this cam ring seat, the guide wheel that can assemble for the clutch rotating disk outside being sheathed on is inserted, the clutch rotating disk is provided with inductor, and its inner face is good corresponding mutually with the upper surface of clutch just at this moment; The clutch rotating disk is provided with lug outward can be for being pivoted the force-output shaft of power rail, and its in addition then movable being pivoted of end be fixed on the lug of axle bed;

By this, can utilize motion bar to drive the clutch dial rotation, cooperate the guiding of the inclined guide groove of cam ring seat, make the clutch rotating disk of rotation do displacement synchronously, on the change clutch, upper/lower positions do engagement location is motionless or separate rotatable, can mesh the location when making the start of drive power source claw-type clutch earlier and do the displacement of pull bar with the clamp-on tool axle sleeve, separation is afterwards done the rotation of driven in synchronism collar bush with the processing working substance, location afterwards can be decontroled the operation of cutter axle sleeve again, become a kind of needn't oil hydraulic system and with the main axle structure of the central cutting machine of power source direct control pull bar.

The main axle structure of aforesaid central cutting machine, wherein: the locating ring of claw-type clutch cooperates screw can directly link power source.

The main axle structure of aforesaid central cutting machine, wherein: the axle bed upper surface is provided with support can establish upper and lower inductor for group, and this upper and lower inductor is corresponding to the upper and lower side end of inductance loop.

In sum, the present invention and known configurations are compared and are had following advantage:

1, the force entering end by collar bush directly is provided with clutch, the automatic operation location of engagement clutch rotating disk, the claw-type clutch that connects straight knot power is folded up out the direct transmission of power to do gripping with pine of cutter axle sleeve, effectively increase work efficiency.

2, by these structures can utilization itself power source operation pull bar do the clamping and pine folder of cutter axle sleeve, replace in the past oil hydraulic system and structure fully, can effectively reduce the inertia of the transmission system of one-piece rotor shaft, significantly shorten the acceleration time of main shaft, be present the best and structure that efficient is best.

3, the structure that holds formed pull bar start that cooperates disc spring makes it must to overlap continuously as main axle structure in the past to be made as and counts appreciable a large amount of disc springs, only can reach required strong elastic strength with several pieces disc springs, and it is quite convenient to make up.

4, operating mechanism replaces in the past oil hydraulic system thus, can reduce the waste of the required additional energy source of oil hydraulic system and power, more can avoid in the past high temperature hydraulic oil to the influence of mechanical precision, and the C﹠M of release oil hydraulic system, serves multiple.

5, in setting up several inductors separately on the axle bed and on the clutch rotating disk, can clearly detect the start and the position of clutch, and grip location and the operation that folds up the crop that goes into operation etc. with pine can effectively grasp the pull bar start time.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a part enlarged diagram one of the present invention;

Fig. 3 is the profile one of looking closely of the present invention;

Fig. 4 is a part vertical view of the present invention;

Fig. 5 is the profile two of looking closely of the present invention;

Fig. 6 is the profile three of looking closely of the present invention;

Fig. 7 is the profile four of looking closely of the present invention;

Fig. 8 is the cross-sectional schematic of each end-view of the present invention;

Fig. 9 is a part enlarged diagram of the present invention;

Figure 10 is an end view of the present invention;

Figure 11 is combination embodiment of the present invention;

Figure 12 is operation chart of the present invention (clamping);

Figure 13 is operation chart of the present invention (a pine folder);

Figure 14 is a known configurations schematic diagram one;

Figure 15 is known structural representation two;

Figure 16 is the schematic diagram of another known configurations.

The drawing reference numeral explanation:

1, axle bed 11, bearing 12, bearing 13, retainer ring

131, engaging tooth 14, lug 15, support 151, last inductor

152, inductor 16, shaft coupling 17, power source 171, force-output shaft

2, collar bush 21, taper hole section 22, coupling band 221, outer croze key

23, bearing block 231, bearing 232, shrinkage pool 233, spring

234, push rod 235, thrust bearing 24, disc spring 25, movable spacer ring

251, flange 26, spacer lug 27, interior scrobicular ring 3, clutch

31, interior croze key 32, shrinkage pool 33, spring 34, push rod

35, interior engaging tooth 36, external toothing tooth 37, upper surface 4, pull bar

40, threaded section 41, lower link swivel nut 411, flange 412, engaged claw

42, upper connecting rod swivel nut 421, engaged claw 422, flange 423, latch

424, inductance loop 425, outer croze key 43, mesopore 44, jaw

5, claw-type clutch 51, engaged claw 52, straight slotted hole 54, locating ring

55, screw 6, cam ring seat 61, bolt 62, inclined guide groove

63, clutch rotating disk 631, guide wheel 632, inner face 633, lug

64, inductor 65, power rail 651, force-output shaft 7, conduit

8, main axle structure 81, main shaft axle bed 82, axle sleeve 83, collar bush

84, oil gear 841, oil circuit 842, oil circuit 843, piston

85, pull bar 86, shaft coupling 87, active source 871, force-output shaft

872, through hole 88, swivel joint 89, cutter axle sleeve 9, main shaft

91, pull bar 92, disc spring 93, push rod

The specific embodiment

At first, see also shown in Figure 1ly, the main shaft of central cutting machine of the present invention is formed by combining by axle bed 1, collar bush 2, clutch 3, pull bar 4, claw-type clutch 5, cam ring seat 6 and conduit 7.

Please cooperate shown in Fig. 1-3, the axis hole that axle bed 1 is horizontally set with cooperates all multiple bearings 11,12 for being pivoted collar bush 2 again.

The taper hole section 21 of the bottom of collar bush 2 can for the group establish cutter axle sleeve 89, the top then is installed with coupling band 22 and bearing block 23, and in be equipped with a disc spring 24 and a movable spacer ring 25.There are outer croze key 221 interior croze keys 31 proper and clutch 3 to make the slip fit outside the coupling band 22 with socket clutch 3, and 11 sheathed spacer lugs 26 of coupling band 22 and bearing, and the outer group of removing of bearing block 23 is provided with the bearing 231, in be provided with many shrinkage pools 232 and establish spring 233 and push rod 234 for groups.Be respectively equipped with thrust bearing 235,251 between the upper surface of the end face of push rod 234 and movable spacer ring 25, this two thrust bearing 235,251 is held in flange 411 upper/lower terminals of lower link swivel nut 41 just.

Also be provided with many shrinkage pools 32 in the clutch 3 for putting spring 33 and push rod 34, make the end face of push rod 34 be held in the upper surface of spacer lug 26 just, make this clutch 3 that an elasticity strength of upwards passing can be arranged, and on this clutch 3, the lower end is respectively equipped with, following engaging tooth 35,36, utilize engaging tooth 36 down to do correspondingly to snap in engagement or separate with the engaging tooth 131 of the retainer ring 13 of the upper surface of being fixed in axle bed 1, utilizations in engaging tooth 35 just can with bearing block 23 on utilize following engaged claw 51 works of the claw-type clutch 5 that bearing 231 is pivoted to mesh or separate (as Fig. 2,3,6,11, shown in 12).

Please consult Fig. 1-3 more in the lump, shown in the 5-9, pull bar 4 upper ends have threaded section 40, this threaded section 40 can be the tooth form that angle tooth or ladder type tooth etc. can bear big strength, simultaneously for screwing togather, lower link swivel nut 42,41, and the mesopore 43 of pull bar 4 just can pass for conduit 7, on being somebody's turn to do, lower link swivel nut 42,41 are provided with engaged claw 421,412 location that can be meshing with each other, and activity is inserted in claw-type clutch 5 on the flange 422 of upper connecting rod swivel nut 42, this flange 422 equidistantly is provided with many latches 423 movable straight slotted hole 52 interior surfaces that convexedly stretch in this claw-type clutch 5 afterwards that are arranged in claw-type clutch 5 outwardly, and the outer end of many by this latches 423 is installed with an inductance loop 424 (as Fig. 7, shown in 9).In addition, as shown in Figure 1, the bottom of this pull bar 4 is connected with a jaw 44 and can cooperates main shaft 2 interior interior scrobicular rings 27 to do the operation of clamping or relieving cutter axle sleeve 89 when pull bar 4 is done upper and lower displacement.

Claw-type clutch 5 is except that having engaged claw 51 and straight slotted hole 52, do the pivot bush unit transmission with the interior croze key 53 and the outer croze key 425 of upper connecting rod swivel nut 42, the upper surface is provided with locating ring 54 and screw 55 in addition can be for directly linking power source 17 or drive, connects (shown in Fig. 9,11 and 12) as the power of going into of power.

Please consulting cam ring seat 6 shown in Fig. 3,4,9,10 more in the lump utilizes bolt 61 and retainer ring 13 affixed, and be sheathed on just outside the clutch 3, the many inclined guide grooves 62 of tool in this cam ring seat 6, the guide wheel 631 that can assemble for the clutch rotating disk 63 outside being sheathed on is inserted, clutch rotating disk 63 is provided with inductor 64, and its inner face 632 just with the upper surface 37 mutual corresponding (as shown in Figure 9) of clutch 3.In addition as shown in figure 10, the clutch rotating disk 63 outer lugs 633 that are provided with can be for the force-output shaft 651 of the power rail 65 that is pivoted, and this power rail 65 can be the actuating unit of cylinder or the turnover of other straight line, and it is held on the then movable lug 14 that is fixed in axle bed 1 that is pivoted in addition.Can promote this clutch rotating disk 63 by this rotates, and cooperate the guiding (shown in Fig. 4,9) of guide wheel 631 and inclined guide groove 62, do the displacement of above-below direction when rotation simultaneously, the displacement that can reach pushing tow clutch 3 is to form and the engagement of retainer ring 13 or claw-type clutch 5 or the purpose of separating.

In addition, be provided with in addition in the upper surface of axle bed 1 that support 15 is established upper and lower inductor 151,152 for group and corresponding to the upper and lower side end of inductance loop 424, as shown in Figure 2.

Please consult again shown in Fig. 9,11 and 12, the main shaft of central cutting machine of the present invention can utilize the locating ring 54 of claw-type clutch 5 for an affixed shaft coupling 16, this shaft coupling 16 is affixed with the force-output shaft 171 of power source 17, makes the power of power source 17 can drive directly that claw-type clutch 5 rotates and cutter axle sleeve 89 that collar bush 2 and bottom thereof are affixed and cutter thereof rotate and process.

This claw-type clutch 5 can utilize clutch pawl 51 and interior croze key 53 to mesh with the last engaging tooth 35 of clutch 3 and the outer croze key 425 of outside link swivel nut 42 respectively, and whether clutch pawl 51 meshes with last engaging tooth 35 and can reach the rotation that drives clutch 3 and upper connecting rod swivel nut 42 simultaneously, as shown in Figure 9; If clutch pawl 51 is not done engagement with the last engaging tooth 35 of clutch 3 but is separated shape (as shown in figure 12), then collar bush 2 is positioned motionless, utilize power source 17 to rotate this moment, make upper connecting rod swivel nut 42 drive synchronously draw-in bar swivel nuts 41 rotation and can the movable spacer ring 25 of pushing tow and oppress disc spring 24 to bottom offset, make pull bar 4 can to bottom offset with the pulling jaw 44, make jaw 44 can decontrol cutter axle sleeve 89, supply the cutter-exchange mechanism of central cutting machine to fetch the operation of doing tool changing.

At this moment, inductance loop 424 is subjected to the pulling of latch 423 synchronously to moving down, and makes the lower surface of inductance loop 424 can be subjected to down detecting of inductor 152 to provide signal that power source 17 is stopped and learning that jaw decontrols cutter axle sleeve 89 44 this moments really.

Otherwise, power source 17 is reversed, slowly revolution and of upper and lower pull bar swivel nut 42,41 beginnings to top offset, and drive synchronously pull bar 4 to top offset upwards to spur jaw 44, make it to do the cutter axle sleeve 89 of new insertion once more the operation of clamping, the drive that this moment, inductance loop 424 was subjected to latch 423 makes the upper end of this inductance loop 424 be subjected to inductor 151 to sense and provide signal to make power source 17 stop counter-rotating also to top offset, and expression jaw 44 is clamp-on tool axle sleeve 89 (as shown in figure 13).

When the power rail 65 on utilizing lug 14 promotes 63 rotations of clutch rotating disk, consult Fig. 4 again, shown in 10, the clutch rotating disk 63 of rotation is subjected to the guiding of guide wheel 631 and inclined guide groove 62 and the same moved further that makes progress, make this clutch 3 no longer be subjected to the pressure holding of clutch rotating disk 63, cooperate the upwards pushing tow of many springs 33 to move up synchronously, make down the engaging tooth 131 on engaging tooth 36 and the retainer ring 13 break away from (as shown in Figure 9), 35 of last engaging tooths snap in the engaged claw 51 interior engagement location of doing of claw-type clutch 5 smoothly, and the upper surface 37 of clutch 3 is detected by inductor 64 just and determines the position, this moment, power source 17 can utilize claw-type clutch 5 to drive collar bush 2 and pull bar 4 rotations synchronously, made the cutter on the cutter axle sleeve 89 do required processing (as Fig. 1, shown in 2).

After machining, stop the rotation of collar bush 2, utilize power rail 65 reverse starts once more, consult shown in Fig. 9,10, can drive clutch rotating disk 63 rotates and utilizes inner face 632 and upper surface 37 to press simultaneously to touch and pushing tow clutch 3 moves down, make the engaging tooth 131 that engaging tooth 36 snaps on the retainer ring 13 once again under clutch 3 utilizations form the motionless state in location, pull bar 4 can be pulled with clamping and loose operation (as shown in figure 13) of pressing from both sides as 44 pairs of cutter axle sleeves 89 of jaw.Because having the disc spring 24 of suitable jacking force can be when pull bar 4 be made clamped tool axle sleeve 89, by the powerful clamp-on tool axle sleeve 89 by this of oppressing also, to reach required clamping purpose smoothly.

Claims (3)

1, a kind of main axle structure of central cutting machine includes:

One axle bed, in have all multiple bearings just can organize to establish collar bush;

One collar bush, the bottom of collar bush are provided with taper hole can do required processing with clamped tool for organize the insertion of establishing the cutter shaft cartridge clip that links cutter in the future;

One pull bar is placed in the collar bush, and the bottom of pull bar has jaw and can cooperate the interior interior scrobicular ring of collar bush with the clamped tool axle sleeve; And interior tool mesopore is for being nested with conduit; It is characterized in that:

Be provided with coupling band and bearing block in the top of collar bush, and in be equipped with a disc spring and a movable spacer ring;

Have outer croze key just to make the slip fit with the socket clutch outside the coupling band, and a sheathed spacer lug between coupling band and the bearing block, and bearing block removes group outward and is provided with the bearing with the interior croze key of clutch, in be provided with many shrinkage pool confessions and organize and establish spring and push rod; Be respectively equipped with thrust bearing between the end face of push rod and the upper surface of movable spacer ring, the flange that this two thrust bearing is held in the lower link swivel nut just is both ends of the surface up and down;

Also be provided with many shrinkage pools in the clutch for putting spring and push rod, make the end face of push rod be held in the upper surface of spacer lug just, make this clutch that the one elasticity strength to top offset can be arranged, and this clutch upper and lower end is respectively equipped with upper and lower engaging tooth, utilize engaging tooth down to do correspondingly to snap in engagement or separate with the engaging tooth of the retainer ring of the upper surface of being fixed in axle bed, utilizations in engaging tooth just can with bearing block on utilize the engaged claw work of the claw-type clutch that bearing is pivoted to mesh or separate;

The pull bar epimere has threaded section, this threaded section can be simultaneously for screwing togather the lower link swivel nut, be provided with the engaged claw location that can be meshing with each other between this upper and lower pull bar swivel nut, and activity is inserted in claw-type clutch on the flange of upper connecting rod swivel nut, and equidistantly be provided with many latches that outwards sets firmly on the flange of upper connecting rod swivel nut, it is movable be arranged in claw-type clutch straight slotted hole in after convexedly stretch in the surface of this claw-type clutch, the outer end of many latches is provided with an inductance loop by this;

Claw-type clutch is done the pivot bush unit transmission with the outer croze key of interior croze key and outside link swivel nut except that having engaged claw and straight slotted hole, the upper surface is provided with locating ring and screw in addition;

The cam ring seat utilizes bolt and retainer ring affixed, and be set in outside the clutch just, the many inclined guide grooves of tool in this cam ring seat, the guide wheel that can assemble for the clutch rotating disk outside being sheathed on is inserted, the clutch rotating disk is provided with inductor, and its inner face is good corresponding mutually with the upper surface of clutch just at this moment; The clutch rotating disk is provided with lug outward can be for being pivoted the force-output shaft of power rail, and its in addition then movable being pivoted of end be fixed on the lug of axle bed;

By this, can utilize motion bar to drive the clutch dial rotation, cooperate the guiding of the inclined guide groove of cam ring seat, make the clutch rotating disk of rotation do displacement synchronously, on the change clutch, upper/lower positions do engagement location is motionless or separate rotatable, can mesh the location when making the start of drive power source claw-type clutch earlier and do the displacement of pull bar with the clamp-on tool axle sleeve, separation is afterwards done the rotation of driven in synchronism collar bush with the processing working substance, location afterwards can be decontroled the operation of cutter axle sleeve again, become a kind of needn't oil hydraulic system and with the main axle structure of the central cutting machine of power source direct control pull bar.

2, the main axle structure of central cutting machine as claimed in claim 1 is characterized in that: the locating ring of claw-type clutch cooperates screw can directly link power source.

3, the main axle structure of central cutting machine as claimed in claim 1 is characterized in that: the axle bed upper surface is provided with support can establish upper and lower inductor for group, and this upper and lower inductor is corresponding to the upper and lower side end of inductance loop.

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