A kind of working method of the automation drilling-tapping all-in-one machine of Nut column
Technical field
The present invention relates to part processing equipment fields, are especially a kind of automation drilling-tapping all-in-one machine of Nut column
Working method.
Background technology
Self-Clinching Standoffs is also known as self-clinching standoff or Nut column, is a kind of fastening applied to metal plate, thin plate, cabinet, cabinet
Part, its shape one end of Self-Clinching Standoffs are in hexagon, and the other end is cylindric, and there are withdrawing together in hexagon and cylindric centre
Slot, interior shape are internal thread, and the aperture that turret head is pressed into preset holes in the preset holes of thin plate by forcing press is generally slightly larger than
The cylinder outer diameter of self-clinching standoff makes the periphery in hole generate plastic deformation, and deformed part is squeezed into the escape of Self-Clinching Standoffs,
Self-Clinching Standoffs is set to rivet tightly on thin plate, to form effectively fixed internal thread on thin plate.
In the prior art, the equipment for producing Nut column is using accurate automatic lathe, and main shaft is furnished with five groups of cutters, equipped with micro-
Screw, punching, tapping, milling side, chamfering is adjusted to process at one time simultaneously, but the cost of accurate automatic lathe is excessively high, dimension
It is very high to accomplish this, can not popularize.
The present invention is directed to which the Nut column that integrated can be machined originally to be separately processed, and for drilling and attack
The process of silk, designs a kind of automation drilling-tapping equipment of Nut column, can be together in series with other equipment, realizes nut
The automated production of column.
A kind of bore disclosed in the patent of invention of 103100856 A of Patent No. CN attacks all-in-one machine comprising:Rack;Indexing
Disk, multiple positioning regions for being positioned to workpiece are provided on the disk body of index dial, and positioning region surrounds the rotary shaft of disk body
Line is evenly arranged;Drilling power head for drilling to workpiece;Tapping power head for carrying out tapping to workpiece bores
Hole power head, tapping power head and index dial are fixedly connected with rack respectively, when disk body is static, the drill bit of drilling power head and one
Position where a positioning region corresponds to, and the screw tap of tapping power head is corresponding with the position where another positioning region;For to work
Part carries out the cleaning device of Pneumatic cleaning, and cleaning device is fixedly connected with rack;It is moved for controlling disk body rotation and controlling drilling
The control system of power head and tapping power head work.The brill is attacked in all-in-one machine, and each technique mechanism is cooperatively formed with index dial certainly
Dynamic production, reduces the occupied ground of machine, shortens the process-cycle, reduce manual operation intensity.
The patent of invention solves the problems, such as automation drilling, tapping, but not for the part of feeding, the material returned
It refers to, can not realize fully-automatic production.
Invention content
The purpose of the present invention is to provide a kind of automation drilling-tapping all-in-one machines of Nut column, to solve above-mentioned background skill
The problem of being proposed in art.
The technical scheme is that:Including workbench, turntable, stepper motor, feed mechanism, borehole drill construction, tooth machining unit
Structure, unloading mechanism and detent mechanism, stepper motor are fixed on workbench upper surface, and turntable is fixed on the main shaft of stepper motor
On, feed mechanism, borehole drill construction, tapping mechanism and unloading mechanism are each attached to the upper surface of workbench and four along described turn
The direction of rotation of disk is successively set on around turntable, and the edge of turntable is equipped with several jigs being angularly distributed, stepping electricity
Machine driving disc rotates, and jig can be made to pass through feed mechanism, borehole drill construction, tapping mechanism and unloading mechanism, localization machine successively
Structure is fixed on the upper surface of workbench and it is located at the lower section of the turntable, and detent mechanism constitutes positioning with the turntable and matches
It closes.
In a preferred embodiment of the present invention, feed mechanism include vibration feeding disc, linear vibration feeder, track and on
Expect that manipulator, vibration feeding disc are positioned over the side of the workbench, linear vibration feeder is fixed on the upper surface of workbench,
Track is mounted on linear vibration feeder, and one end of track is connected to vibration feeding disc, and the other end and the turntable of track close on
It is arranged, offers the hopper moved along a straight line inside it for workpiece on track, feeding manipulator is fixed on the upper end of workbench
Face and its be located at the side that track closes on one end of turntable, feeding manipulator is used for the workpiece grabbing on track and is placed on
It stays in the jig of position corresponding to feed mechanism.
In a preferred embodiment of the present invention, borehole drill construction includes first support, the first slide unit, the first cylinder, drilling electricity
Machine and drill bit, first support are fixed on the upper surface of workbench, and the first slide unit is slidably fitted in the front end face of the first support
On, the first slide unit can vertically be slided in the front end face of first support, and the front end face of first support, which is equipped with, to be used for
It fixes the first slide unit and moves two guide rails being oriented to it, the first cylinder is fixed on the front end face of first slide unit
On, the first cylinder and the first slide unit are sequentially connected for providing power for the movement of the first slide unit, and bore motor is fixed on institute
It states on the first slide unit, drill bit is removably attachable on the output shaft of the bore motor.
In a preferred embodiment of the present invention, tapping mechanism includes second support, the second slide unit, the second cylinder, tapping electricity
Machine and screw tap, second support are fixed on the upper surface of workbench, and the second slide unit is slidably fitted in the front end face of the second support
On, the second slide unit can vertically be slided in the front end face of second support, and the front end face of second support, which is equipped with, to be used for
It fixes the second slide unit and moves two guide rails being oriented to it, the second cylinder is fixed on the front end face of second slide unit
On, the second cylinder and the second slide unit are sequentially connected for providing power for the movement of the second slide unit, and tapping motor is fixed on institute
It states on the second slide unit, screw tap is removably attachable on the output shaft of the tapping motor.
In a preferred embodiment of the present invention, jig includes first base and second base, and first base is connected by screw
It is connected on the turntable, by screw connection in the first base, first base is equipped with and is passed through for screw second base
Waist-shaped hole, second base is equipped with the waist-shaped hole that is passed through for screw, first base after screw passes through can by itself
Waist-shaped hole is slided in a certain range along a straight line, and second base being capable of edge by the waist-shaped hole of itself after screw passes through
One straight line carries out sliding in a certain range, and the glide direction of first base and second base is perpendicular, is opened in second base
Equipped with the locating slot similar with workpiece outer contour shape.
In a preferred embodiment of the present invention, unloading mechanism includes liftout component, moves material component and conveyer belt, liftout component
It is arranged in the lower section of the turntable, conveyer belt is fixed on the table and is disposed adjacent with the liftout component, is moved material component and is set
It sets between liftout component and conveyer belt, liftout component moves material component and be used for for ejecting the workpiece in jig from jig
The workpiece being ejected is moved on conveyer belt.
In a preferred embodiment of the present invention, liftout component includes the first L-shaped fixed plate of vertical cross-section, and first fixes
Plate is fixed on the upper surface of the workbench, and material ejection cylinder and the first guide pad are equipped on the vertical plane of the first fixed plate, the
One guide pad is located at the surface of the material ejection cylinder, and mandril is equipped in the first guide pad, and mandril is slided with first guide pad
Action-oriented coordinates, and material ejection cylinder connect with the bottom driving of the mandril, and mandril can be according to by the driving of the material ejection cylinder
It is secondary to pass through turntable, first base and second base.
In a preferred embodiment of the present invention, it includes third holder, sliding rail, sliding block, third cylinder, the 4th gas to move material component
The gentle folder of cylinder, third holder is vertical to be fixed on the workbench, and sliding rail is vertically fixed on the front end face of the third holder,
Third cylinder is fixed on the top of the third holder, and sliding block is slidably fitted on the sliding rail, and the output rod of third cylinder is perpendicular
It is connected on the sliding block after being directly passed down through the top of third holder, the 4th cylinder is lain in a horizontal plane on the sliding block, gas folder
It is fixed on the output end of the 4th cylinder.
In a preferred embodiment of the present invention, detent mechanism includes the second L-shaped fixed plate of vertical cross-section, and second fixes
Plate is fixed on the upper surface of the workbench, and positioning cylinder and the second guide pad are equipped on the vertical plane of the second fixed plate, the
Two guide pads are located at the surface of the positioning cylinder, and positioning pin is equipped in the second guide pad, and positioning pin is oriented to described second
Block slide-and-guide coordinates, and positioning cylinder is connect with the bottom driving of the positioning pin, the drive that positioning pin passes through the positioning cylinder
Kinetic energy is enough interspersed on the turntable, several and detent fit location hole is offered on turntable, several location holes are along turntable
Circumferential direction be uniformly distributed, the quantity of location hole is identical as the quantity of jig.
The present invention provides a kind of automation drilling-tapping all-in-one machine of Nut column herein by improving, with prior art phase
Than, have the advantages that as follows improve and:
(1)Equipped with feed mechanism, feed mechanism includes vibration feeding disc, linear vibration feeder, track and feeding manipulator, is shaken
Its internal workpiece can be sent into track by dynamic feed table by vibrating orderly arrangement, and by workpiece with fixed posture
Interior, linear vibration feeder conveys the workpiece in track along straight line, and feeding manipulator can will be in end on track
The workpiece grabbing of material position is simultaneously placed in the jig for staying in position corresponding to feed mechanism, realizes the feeding of automation;
(2)Equipped with jig, jig includes first base and second base, and first base and second base can be along a straight line one
Determine to be slided in range, and the glide direction of the two is perpendicular, and then the adjustable position of locating slot in the horizontal plane, side
Just the concentricity between locating slot and drill bit, screw tap is calibrated, locating slot matches with workpiece configurations, and feeding manipulator grabs workpiece
After taking, workpiece is put into the head-down posture of cylinder in locating slot, the turret head of workpiece can fix in locating slot upper end
Portion prevents workpiece from rotating;Jig only realizes the positioning of workpiece by the locating slot of itself, matches without other executing agencies
It closes, has the advantages that simple in structure.
(3)Equipped with unloading mechanism, unloading mechanism includes liftout component, moves material component and conveyer belt, and liftout component can incite somebody to action
Workpiece in jig is ejected from jig, and moving material component can be moved to the workpiece being ejected on conveyer belt, and workpiece is transmitted
Band is delivered in subsequent process equipment;It realizes the material returned of automation.
(4)Several jigs of driven by rotary disc pass through feed mechanism, borehole drill construction, tapping mechanism and unloading mechanism successively, pass through
Feed mechanism, borehole drill construction, tapping mechanism and unloading mechanism realize feeding, drilling, tapping and the material returned of automation, and then realize
Serialization, automation Nut column drilling, tapping operation, and the present invention is together in series with other equipment, you can realization spiral shell
The automated production of female column has the advantages that simple in structure, manufacturing cost and maintenance cost are low.
Description of the drawings
The present invention is further explained with reference to the accompanying drawings and examples:
Fig. 1 is schematic top plan view of the present invention;
Fig. 2 is dimensional structure diagram of the present invention;
Fig. 3 is partial structural diagram one of the present invention;
Fig. 4 is the partial enlarged view of Fig. 3;
Fig. 5 is partial structural diagram two of the present invention;
Fig. 6 is partial structural diagram three of the present invention;
Fig. 7 is partial structurtes schematic cross-sectional view of the present invention;
Fig. 8 is the partial enlarged view of Fig. 7;
Reference sign:
Workbench 1, turntable 2, location hole 21, stepper motor 3, feed mechanism 4, linear vibration feeder 41, track 42, drilling machine
Structure 5, first support 51, the first slide unit 52, bore motor 54, drill bit 55, tapping mechanism 6, second support 61, the second slide unit 62,
Second cylinder 63, tapping motor 64, screw tap 65, unloading mechanism 7, liftout component 71, the first fixed plate 711, material ejection cylinder 712,
First guide pad 713, mandril 714 move and expect component 72, third holder 721, sliding rail 722, sliding block 723, third cylinder 724, and the 4th
Cylinder 725, gas folder 726, conveyer belt 73, jig 8, first base 81, second base 82, detent mechanism 9, the second fixed plate 91,
Positioning cylinder 92, the second guide pad 93, positioning pin 94.
Specific implementation mode
Below in conjunction with attached drawing 1- Fig. 8, the present invention is described in detail, technical solution in the embodiment of the present invention into
Row clearly and completely describes, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
Every other embodiment, shall fall within the protection scope of the present invention.
The present invention provides a kind of automation drilling-tapping all-in-one machine of Nut column herein by improving, as Figure 1-Figure 8,
Including including workbench 1, turntable 2, stepper motor 3, feed mechanism 4, borehole drill construction 5, tapping mechanism 6, unloading mechanism 7 and determining
Position mechanism 9, stepper motor 3 are fixed on 1 upper surface of workbench, and turntable 2 is fixed on the main shaft of stepper motor 3, feed mechanism 4,
Borehole drill construction 5, tapping mechanism 6 and unloading mechanism 7 be each attached to the upper surface of workbench 1 and four along the turntable 2 rotation
Turn direction to be successively set on around turntable 2, the edge of turntable 2 is equipped with several jigs 8 being angularly distributed, stepper motor 3
Driving disc 2 rotates, and jig 8 can be made to pass through feed mechanism 4, borehole drill construction 5, tapping mechanism 6 and unloading mechanism 7 successively, fixed
Position mechanism 9 is fixed on the upper surface of workbench 1 and it is located at the lower section of the turntable 2, detent mechanism 9 and 2 structure of the turntable
At location fit.
The principle of the present invention:It by the Nut column that integration machines originally, is separately processed, the present invention is targeted
It is the process of drilling, tapping;At work, by turntable 2 drive several jigs 8 successively pass through feed mechanism 4, borehole drill construction 5,
Tapping mechanism 6 and unloading mechanism 7 realize automation by feed mechanism 4, borehole drill construction 5, tapping mechanism 6 and unloading mechanism 7
Feeding, drilling, tapping and the material returned, and then realize Nut column drilling, the tapping operation of serialization, automation, and will be of the invention
Be together in series with other equipment, you can the automated production for realizing Nut column, with simple in structure, manufacturing cost and repair at
This low advantage.
Preferably, feed mechanism 4 includes vibration feeding disc, linear vibration feeder 41, track 42 and feeding manipulator, is shaken
Dynamic feed table is positioned over the side of the workbench 1, and linear vibration feeder 41 is fixed on the upper surface of workbench 1, track 42
It is mounted on linear vibration feeder 41, one end of track 42 is connected to vibration feeding disc, and the other end and the turntable 2 of track 42 face
It is close to be arranged, the hopper moved along a straight line inside it for workpiece is offered on track 42, what vibration feeding disc can be internal by it
Workpiece is sent into fixed posture in track 42 by vibrating orderly arrangement, and by workpiece, and linear vibration feeder 41 will
Workpiece in track 42 is conveyed along straight line, and feeding manipulator is fixed on the upper surface of workbench 1 and it is located at track 42
The side of one end of turntable 2 is closed on, feeding manipulator is used to be in the workpiece grabbing of end level on track 42 and is placed on
It stays in the jig 8 of position corresponding to feed mechanism.
Preferably, borehole drill construction 5 includes first support 51, the first slide unit 52, the first cylinder, bore motor 54 and drill bit
55, first support 51 is fixed on the upper surface of workbench 1, and the first slide unit 52 is slidably fitted in the front end face of the first support 51
On, the first slide unit 52 can vertically be slided in the front end face of first support 51, and the front end face of first support 51 is set
It is useful for fixing the first slide unit 52 and moves two guide rails being oriented to it, the first cylinder is fixed on first slide unit 52
Front end face on, the first cylinder and the first slide unit 52 are sequentially connected to provide power for the movement of the first slide unit 52, drill
Motor 54 is fixed on first slide unit 52, and drill bit 55 is removably attachable on the output shaft of the bore motor 54;The
One cylinder can drive the first slide unit 52 to lift, so can drive bore motor 54 relative to stop jig 8 thereunder into
Row feed motion drives drill bit 55 to rotate, drills to the workpiece in jig 8 by bore motor 54.
Preferably, tapping mechanism 6 includes second support 61, the second slide unit 62, the second cylinder 63, tapping motor 64 and screw tap
65, second support 61 is fixed on the upper surface of workbench 1, and the second slide unit 62 is slidably fitted in the front end face of the second support 61
On, the second slide unit 62 can vertically be slided in the front end face of second support 61, and the front end face of second support 61 is set
It is useful for fixing the second slide unit 62 and moves two guide rails being oriented to it, the second cylinder 63 is fixed on second slide unit
On 62 front end face, the second cylinder 63 and the second slide unit 62 are sequentially connected for providing power for the movement of the second slide unit 62,
Tapping motor 64 is fixed on second slide unit 62, and screw tap 65 is removably attachable to the output shaft of the tapping motor 64
On;Second cylinder 63 can drive second slide unit 62 to lift, and then tapping motor 64 can be driven relative to stopping thereunder
Jig 8 carries out feed motion, drives screw tap 65 to rotate by tapping motor 64, and tapping is carried out to the workpiece in jig 8.
Preferably, jig 8 includes first base 81 and second base 82, and first base 81 is by screw connection at described turn
On disk 2, for second base 82 by screw connection in the first base 81, first base 81 is equipped with the waist passed through for screw
Type hole, second base 82 are equipped with the waist-shaped hole that is passed through for screw, first base 81 after screw passes through can by itself
Waist-shaped hole is slided in a certain range along a straight line, and then subtle adjustment can be carried out to the position of first base 81, and second
Pedestal 82 can carry out sliding in a certain range along a straight line after screw passes through by the waist-shaped hole of itself, and then can be right
The glide direction of the subtle adjustment of position progress of second base 82, first base 81 and second base 82 is perpendicular, second base
The locating slot similar with workpiece outer contour shape is offered on 82, by adjusting the position of first base 81 and second base 82,
The position of adjustable locating slot in the horizontal plane facilitates the concentricity between calibration locating slot and drill bit 55, screw tap 65.
Preferably, unloading mechanism 7 includes liftout component 71, moves material component 72 and conveyer belt 73, and the setting of liftout component 71 exists
The lower section of the turntable 2, conveyer belt 73 are fixed on workbench 1 and are disposed adjacent with the liftout component 71, move material component 72
It is arranged between liftout component 71 and conveyer belt 73, liftout component 71 is used for the ejection from jig 8 by the workpiece in jig 8, moves
Material component 72 is used to the workpiece being ejected being moved to conveyer belt 73, and workpiece is delivered to subsequent process equipment by conveyer belt 73
In.
Preferably, liftout component 71 includes the first L-shaped fixed plate 711 of vertical cross-section, and the first fixed plate 711 is fixed on
The upper surface of the workbench 1 is equipped with material ejection cylinder 712 and the first guide pad 713 on the vertical plane of first fixed plate 711,
First guide pad 713 is located at the surface of the material ejection cylinder 712, is equipped with mandril 714 in the first guide pad 713, mandril 714 with
First guide pad, the 713 slide-and-guide cooperation, material ejection cylinder 712 are connect with the bottom driving of the mandril 714, mandril 714
Turntable 2, first base 81 and second base 82, turntable 2 and first can be sequentially passed through by the driving of the material ejection cylinder 712
The hole passed through for mandril 714 is offered on pedestal 81, the locating slot in second base 82 includes top according to the shape of workpiece
Hexagon ring and lower part round hole, circular bore portions run through second base 82 lower face, mandril 714 is across 2 He of turntable
Enter in round hole after first base 81, the workpiece inside locating slot ejected, makes to be exposed to outside locating slot at the top of workpiece,
Subsequent shifting material component 72 is facilitated to be clamped.
Preferably, it includes third holder 721, sliding rail 722, sliding block 723, third cylinder 724, the 4th cylinder to move material component 72
725 gentle folders 726, third holder 721 is vertical to be fixed on the workbench 1, and sliding rail 722 is vertically fixed on the third branch
The front end face of frame 721, third cylinder 724 are fixed on the top of the third holder 721, and sliding block 723 is slidably fitted in the cunning
On rail 722, the output rod of third cylinder 724 is connected to the sliding block 723 behind the top of third holder 721 straight down
On, the 4th cylinder 725 is lain in a horizontal plane on the sliding block 723, and gas folder 726 is fixed on the output end of the 4th cylinder 725;
Workpiece clamps the top of workpiece by gas folder 726 after being ejected by mandril 714, drives sliding block 723 to rise by third cylinder 724,
Gas folder 726 is moved synchronously with sliding block 723, will be extracted, is finally shunk by the 4th cylinder 725, band is taken offence in workpiece Complete autonomy tool 8
Folder 726 is moved to 73 top of conveyer belt, and after gas folder 726 unclamps, workpiece is fallen on conveyer belt 73, after being delivered to by conveyer belt 73
In continuous process equipment.
Preferably, detent mechanism 9 includes the second L-shaped fixed plate 91 of vertical cross-section, and the second fixed plate 91 is fixed on institute
The upper surface of workbench 1 is stated, positioning cylinder 92 and the second guide pad 93 are installed on the vertical plane of second fixed plate 91, second leads
It is located at the surface of the positioning cylinder 92 to block 93, is equipped with positioning pin 94 in the second guide pad 93, positioning pin 94 and described the
Two guide pads, 93 slide-and-guide coordinates, and positioning cylinder 92 is connect with the bottom driving of the positioning pin 94, and positioning pin 94 passes through institute
Stating the driving of positioning cylinder 92 can be interspersed on the turntable 2, and several positioning coordinated with positioning pin 94 are offered on turntable 2
Hole 21, several location holes 21 are uniformly distributed along the circumferential direction of turntable 2, and the quantity of location hole 21 is identical as the quantity of jig 8, turntable 2
When stopping operating, a surface that can rest on positioning pin 94 in multiple location holes 21, the driving positioning of positioning cylinder 92
Pin 94 rises, and drives positioning pin 94 to be inserted into location hole 21, is positioned to turntable 2, it is ensured that workpiece can be with drill bit 55 and screw tap
65 keep coaxial, ensure the precision of drilling and tapping;Turntable 2 when drilling, tapping is avoided to move simultaneously.
The detailed work steps of the present invention:
3 driving disc of stepper motor, 2 rotated stepwise, when turntable 2 stops, detent mechanism 9 works, and it is fixed to be driven by positioning cylinder 92
Position pin 94 rises, and drives positioning pin 94 to be inserted into a corresponding location hole 21, is positioned to turntable 2.
Its internal workpiece by vibrating orderly arrangement, and workpiece is sent into fixed posture by vibration feeding disc
In track 42, linear vibration feeder 41 conveys the workpiece in track 42 along straight line, by feeding manipulator by track 42
The upper workpiece grabbing in end level is simultaneously placed in the jig 8 for staying in position corresponding to feed mechanism;It realizes on automatic
Material.
Detent mechanism 9 resets, and turntable 2 stops again after rotating certain angle, and detent mechanism 9 repositions turntable 2,
Jig 8 equipped with workpiece moves to the lower section of borehole drill construction 5, borehole drill construction work, by the first cylinder energy with the movement of turntable 2
It enough drives the first slide unit 52 to lift, and then bore motor 54 can be driven to carry out feeding fortune relative to the jig 8 stopped thereunder
It is dynamic, it drives drill bit 55 to rotate by bore motor 54, drills to the workpiece in jig 8.
After drilling, detent mechanism 9 resets, and turntable 2 stops again after rotating certain angle, detent mechanism 9 to turntable 2 again
Secondary positioning, the workpiece after drilling, to tapping mechanism lower section, the second slide unit 62 are driven by the second cylinder 63 with the moving movement of turntable 2
Lifting, and then tapping motor 64 can be driven to carry out feed motion relative to the jig 8 stopped thereunder, it is driven by tapping motor 64
Dynamic screw tap 65 rotates, and tapping is carried out to the workpiece in jig 8.
After tapping, detent mechanism 9 resets, and turntable 2 stops again after rotating certain angle, detent mechanism 9 to turntable 2 again
Secondary positioning, the workpiece after tapping are moved to the rotation of turntable 2 at pusher, i.e., workpiece is being moved to liftout component 71 just
Top;Mandril 714 is driven to rise by material ejection cylinder 712, mandril 714 is entering round hole after turntable 2 and first base 81
It is interior, the workpiece inside locating slot is ejected;After workpiece is ejected, the top of workpiece is clamped by gas folder 726, by third cylinder
724 driving sliding blocks 723 rise, and gas folder 726 is moved synchronously with sliding block 723, will be extracted in workpiece Complete autonomy tool 8, finally by the
Four cylinders 725 are shunk, and band folder 726 of taking offence is moved to the top of conveyer belt 73, and after gas folder 726 unclamps, workpiece falls to conveyer belt 73
On, it is delivered in subsequent process equipment by conveyer belt 73;Realize the material returned.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.