CN109910479A - A kind of curve plotter - Google Patents

Abstract

The present invention provides a kind of curve plotters, including main body, port is offered in the main body top end surface, containing cavities are offered in the main body of the port bottom, rotation is equipped with lifting axle sleeve in the main body at left and right sides of the port, the lifting axle sleeve is extended up and down, the top of the lifting axle sleeve is rotatably assorted with the roof of the containing cavities and connect, the bottom end of the lifting axle sleeve is rotatably assorted with the bottom wall of the containing cavities and connect, lifting cone tooth cavity is offered in the main body of the containing cavities bottom, the lifting cone tooth cavity is symmetrical set, elevating mechanism is equipped in the lifting cone tooth cavity, the lifting axle sleeve screw-internal thread fit is connected with the lifting screw upwardly extended, a kind of curve plotter that the present invention designs, machine is realized from the elliptical purpose of animation, so that accuracy is higher, and And this drive mechanism is relatively simple, is less prone to failure, it is convenient for safeguarding.

Description

A kind of curve plotter

Technical field

The present invention relates to draw circle technical field, and in particular to a kind of curve plotter.

Background technique

In mathematics, ellipse is the curve in the plane of two focuses, so that for each point on curve, to two The sum of the distance of a focus is constant.Therefore, it is the summary of circle, is that there are two focus is special at same position for tool The ellipse of type, it is oval usually in terms of with physics and engineering；

It is usually borrow tool hand drawn that tradition, which draws elliptical manner, and such picture circle method precision may not be high, and is operating It is easy to appear fault in the process so as to cause error；

Therefore the present invention devises a kind of curve plotter, and the present apparatus is oval relative to traditional manual picture, realizes machine certainly The elliptical purpose of animation, so that accuracy is higher, and this drive mechanism is relatively simple, is less prone to failure, convenient for safeguarding.

Summary of the invention

The purpose of the present invention is to provide a kind of curve plotters, can overcome the drawbacks described above of the prior art, improve picture Oval precision.

A kind of curve plotter of the invention, wherein the curve plotter includes main body, the main body top end surface On offer port, containing cavities, the master at left and right sides of the port are offered in the main body of the port bottom Rotation is equipped with lifting axle sleeve in body, and the lifting axle sleeve is extended up and down, the top of the lifting axle sleeve and the storage The roof of chamber is rotatably assorted connection, and the bottom end of the lifting axle sleeve is rotatably assorted with the bottom wall of the containing cavities and connect, the receipts Receive bottom of chamber portion the main body in offer lifting cone tooth cavity, lifting cone tooth cavity is symmetrical set, and the lifting is bored Elevating mechanism is equipped in tooth cavity, the lifting axle sleeve screw-internal thread fit is connected with the lifting screw upwardly extended, the lifting spiral shell The top of bar is installed with top plate, is embedded with top motor admittedly in the top plate, top motor bottom end is connected by power oriented downward The top screws stretched are installed with the slide guide bar extended downwardly, the top on the bottom end of the top plate on the left of the top screws Board bottom portion is equipped with the lifter plate being threadedly engaged with the top screws, and the lifter plate is slidably matched with the slide guide bar, described Lifter plate bottom end is installed with the support rod extended downwardly, and the support rod is symmetrical set, and the support rod bottom end is installed with Work box offers slide block chamber in the work box, fixed block is installed on the rear wall of the slide block chamber, is set in the slide block chamber There is slide block mechanism.

Valuably, the elevating mechanism includes the lifting motor being embedded between the symmetrical lifting cone tooth cavity admittedly, By taking the lifting in left side cone tooth cavity as an example, rotation is extended dynamic equipped with left and right in the right side end wall of the lifting cone tooth cavity Power shaft, right side extending end and the lifting motor of the power shaft are connected by power, prolong on the left of the power shaft Stretch that section protrudes into lifting cone tooth cavity and its end is installed with power shaft cone tooth, rotation in the roof of the lifting cone tooth cavity Tooth is bored equipped with the small shaft of lifting extended up and down, the lifting cone tooth cavity is protruded into the bottom extended segment of the small shaft of lifting Interior and its end is installed with the small shaft cone tooth of lifting in the lifting cone tooth cavity, and the top of the small shaft of lifting extends Section protrudes into the containing cavities and its end is installed with lifting pinion, is circumferentially installed with lifting on the outer wall of the lifting axle sleeve Gear wheel, the lifting big gear are engaged with the lifting pinion, are turned on the left and right sides end face of the main body It is dynamic to be equipped with torsion shaft, it is installed with overturning supporting plate on the left of the torsion shaft, the overturning supporting plate is symmetrical set, bilateral symmetry The overturning supporting plate between rotation be equipped with drawing board, to through slot is symmetrically arranged with, the drawing board can be overturn for left and right in the drawing board The top plate is covered to the top of the main body, when the top plate is located at top, the drawing board may be reversed described Work box bottom is used as drawing board.

Valuably, the slide block mechanism includes the sliding block supporting plate that left and right is extended in the slide block chamber, the sliding block The left and right sides end of supporting plate is fixedly connected with the left and right sides end wall of the slide block chamber, and the sliding block supporting plate runs through the fixation Block, sliding is equipped with sliding block in the slide block chamber of the left and right sides of the fixed block, and the sliding block and the sliding block supporting plate are sliding It is dynamic to be cooperatively connected, spline housing cone tooth cavity is offered in the sliding block supporting plate, and picture circle motor is offered in the fixed block Chamber, by taking the sliding block on right side as an example, rotation is equipped with spline housing, the spline housing in the left side end wall of the spline housing cone tooth cavity Right side extended segment protrude into spline housing cone tooth cavity and its end is installed with spline housing cone tooth, the spline housing cone tooth cavity Focus shaft is equipped in bottom wall in rotation, the top end of the focus shaft protrudes into the spline housing cone tooth cavity and its end It is installed with focus cone tooth, the bottom end of the focus shaft is installed with focus rotating block, and the spline housing internal spline cooperation connects It is connected to the splined shaft extended to the left, the left distal end of the splined shaft is installed with positioned at the spline axial cone drawn in circle motor cavity Tooth, admittedly embedded with picture circle motor in the roof for drawing circle motor cavity, it is described draw circle motor bottom end and be connected by power extend downwardly Oval rotating shaft is circumferentially installed on the outer wall of the oval rotating shaft and bores with the oval rotating shaft of spline axial cone tooth engagement setting Tooth, described draw are embedded with focal adjustments motor, the left and right two of the focal adjustments motor admittedly in the fixed block justified at the top of motor Side is connected by power the middle part screw rod that left and right extends, and the middle part screw rod is threadedly engaged with the sliding block to be connect；

Wherein the bottom end of the oval rotating shaft is stretched out outside the fixed block and is fixedly connected with angularly disposed oblique plate, described oblique Sliding is equipped with slide cartridge on the outer wall of plate, offers slide cartridge chamber in the slide cartridge, it is intracavitary that the oblique plate protrudes into the slide cartridge And it is slidably connected with the slide cartridge, elastic connection between the left-hand end of the oblique plate and the left side end wall of the slide cartridge chamber There is spring, the left-hand end rotation in surface of the slide cartridge is equipped with cylindrical piece, and pen clip dress is installed on the bottom end face of the cylindrical piece Set, offer annular groove in the peripheral outer wall of the cylindrical piece, sliding is equipped with bracing wire in the annular groove, described bracing wire one end with The focus rotating block secure fit positioned at left side connects, and the other end of the bracing wire is rotated with the focus for being located at right side Wire spool in block is fixedly connected, and the wire spool is rotatably provided in the focus rotating block, is equipped in the wire spool Torsional spring, is threadedly engaged to be connected with and screws screw rod on the outer wall of the focus rotating block on right side, and the screw rod that screws can push up The outer wall listing wire spool for being pressed in the wire spool is fixed.

In the following, applicant will carry out with reference to attached drawing and a kind of curve plotter described above using introduction, firstly, In the initial state, lifting screw is located in lifting axle sleeve to the greatest extent, and then is in top plate at most down position, simultaneously Lifter plate is in upward state to the greatest extent, while is located remotely from each other sliding block to the greatest extent, while drawing board is located at the top Plate top covers top plate；

This equipment when in use, firstly, drawing board is turned over, starts lifting motor, makes lifting motor that power shaft be driven to turn You is moved, and then power shaft is made to drive power shaft cone tooth rotation, power shaft bores tooth and drives lifting small by going up and down small shaft Gear rotation, and then lifting big gear is rotated, so that lifting axle sleeve be made to rotate, and then it is raised above lifting screw, in turn Top plate is driven to be raised above, after the completion of rising, opening top motor rotates top screws, and then drives lifter plate to moving up It is dynamic, so that work box be made to move up, drawing board is overturn at this time, is located at drawing board below work box, is used as drawing board, at this time Paper is put on drawing board, starts to adjust focal length, starting focal adjustments motor makes middle part screw rod rotation, and then adjusting slider Move left and right, to adjust elliptic focus distance, after regulating, rotate wire spool by screwing screw rod, so adjust Save bracing wire length, after regulating, screw screw rod, fix wire spool, at this time cylindrical piece can under the elastic force of spring incite somebody to action Bracing wire is tightened, and opens picture circle motor at this time, is drawn circle motor and is driven oval rotating shaft rotation, oval rotating shaft bores tooth band by oval rotating shaft Dynamic spline axial cone tooth rotation, and then splined shaft rotation is driven, splined shaft rotates the rotation of focus rotating block, while oval rotating shaft drives Oblique plate rotation, and then slide cartridge is rotated, so that cylindrical piece be made to complete the work of picture ellipse.

In conclusion work box can be moved up and be moved down by the elevating mechanism of the present apparatus, to realize storage Function, guarantee work box be not easy to be encountered when not working, cause to be damaged to, while space can be saved, drawing board can turn over Turn, can both be used when the lid of device using or when drawing board, the adjustable focal length of slide block mechanism, to adjust ellipse Circular focus distance, slide cartridge rotation can make cylindrical piece complete the work of picture ellipse, and the present apparatus compares ellipse with traditional picture manually Circle, realizes machine from the elliptical purpose of animation, so that accuracy is higher, and this drive mechanism is relatively simple, is less prone to Failure, it is convenient for safeguarding.

Detailed description of the invention

It, below will be to embodiment or existing in order to illustrate more clearly of inventive embodiments or technical solution in the prior art Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only to invent Some embodiments for those of ordinary skill in the art without creative efforts, can also basis These attached drawings obtain other attached drawings.

Fig. 1 is a kind of overall structure diagram of curve plotter of the invention；

Fig. 2 is the enlarged structure schematic diagram of A in Fig. 1 of the present invention；

Fig. 3 is the enlarged structure schematic diagram of B in Fig. 1 of the present invention；

Fig. 4 is the enlarged structure schematic diagram of C in Fig. 1 of the present invention；

Fig. 5 is the structural schematic diagram of drawing board in Fig. 1 of the present invention.

Specific embodiment

All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive Feature and/or step other than, can combine in any way.

Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only It is an example in a series of equivalent or similar characteristics.

Following will be combined with the drawings in the embodiments of the present invention 1 carried out to Fig. 5 technical solution in the embodiment of the present invention it is clear Chu is fully described by, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments. Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all Other embodiments shall fall within the protection scope of the present invention.As shown in Figures 1 to 5, a kind of curve plotter of the invention, wherein The curve plotter includes main body 100, and port 127,127 bottom of port are offered in 100 top end surface of main body Containing cavities 113 are offered in the main body 100 in portion, rotation is set in the main body 100 of 127 left and right sides of port There is lifting axle sleeve 114, about 114 lifting axle sleeve is extended, the top of the lifting axle sleeve 114 and the containing cavities 113 roof is rotatably assorted connection, and the bottom end of the lifting axle sleeve 114 is rotatably assorted with the bottom wall of the containing cavities 113 and connect, Lifting cone tooth cavity 107 is offered in the main body 100 of 113 bottom of containing cavities, the lifting bores 107 or so pairs of tooth cavity Claim setting, is equipped with elevating mechanism in the lifting cone tooth cavity 107,114 screw-internal thread fit of lifting axle sleeve is connected with prolongs upwards The lifting screw 115 stretched, the top of the lifting screw 115 are installed with top plate 119, are embedded with top electricity admittedly in the top plate 119 Machine 120,120 bottom end of top motor are connected by power the top screws 121 extended downwardly, 121 left side of top screws The top plate 119 bottom end on be installed with the slide guide bar 118 extended downwardly, 119 bottom of top plate is equipped with and the top The lifter plate 122 that screw rod 121 is threadedly engaged, the lifter plate 122 are slidably matched with the slide guide bar 118, the lifter plate 122 Bottom end is installed with the support rod 117 extended downwardly, and the support rod 117 is symmetrical set, and 117 bottom end of support rod is fixed There is work box 116, slide block chamber 126 is offered in the work box 116, is installed with fixed block on the rear wall of the slide block chamber 126 144, the slide block chamber 126 is interior to be equipped with slide block mechanism.

Valuably, the elevating mechanism includes that the lifting admittedly between the symmetrical lifting cone tooth cavity 107 is electric Machine 112, by taking tooth cavity 107 is bored in the lifting in left side as an example, rotation is equipped with left and right in the right side end wall of the lifting cone tooth cavity 107 Extended power shaft 109, the right side extending end of the power shaft 109 are connected by power with the lifting motor 112, The left side extended segment of the power shaft 109 is protruded into the lifting cone tooth cavity 107 and its end is installed with power shaft cone tooth 108, the interior rotation of roof of the lifting cone tooth cavity 107 is equipped with the small shaft of lifting extended up and down and bores tooth 106, the lifting The bottom extended segment of small shaft 105 is protruded into the lifting cone tooth cavity 107 and its end is installed with and bores tooth cavity positioned at the lifting The small shaft of lifting in 107 bores tooth 106, and the top extended segment of the small shaft 105 of lifting is protruded into the containing cavities 113 and it End is installed with lifting pinion 104, and lifting big gear 110, the liter are circumferentially installed on the outer wall of the lifting axle sleeve 114 Drop gear wheel 110 is engaged with the lifting pinion 104, and rotation is set on the left and right sides end face of the main body 100 There is torsion shaft 103, the left side of the torsion shaft 103 is installed with overturning supporting plate 102, and the overturning supporting plate 102 is symmetrical set, Rotation is equipped with drawing board 101 between the symmetrical overturning supporting plate 102, and left and right is to being symmetrically arranged with through slot in the drawing board 101 200, the top that the drawing board 101 can be turned to the main body 100 covers the top plate 119, when 119, the top plate When top, the drawing board 101 may be reversed 116 bottom of work box and use as drawing board.

Valuably, the slide block mechanism includes the sliding block supporting plate 125 that left and right is extended in the slide block chamber 126, institute The left and right sides end for stating sliding block supporting plate 125 is fixedly connected with the left and right sides end wall of the slide block chamber 126, the sliding block supporting plate 125 run through the fixed block 144, and sliding is equipped with sliding block in the slide block chamber 126 of the left and right sides of the fixed block 144 123, the sliding block 123 is slidably connected with the sliding block supporting plate 125, and spline housing cone is offered in the sliding block supporting plate 125 Tooth cavity 130 offers picture circle motor cavity 149 in the fixed block 144 and is told by taking the sliding block 123 on right side as an example Spline housing bores rotation in the left side end wall of tooth cavity 130 and is equipped with spline housing 180, and institute is protruded into the right side extended segment of the spline housing 180 It states in spline housing cone tooth cavity 130 and its end is installed with spline housing cone tooth 133, turn in the bottom wall of the spline housing cone tooth cavity 130 Focus shaft 182 is equipped in dynamic, the top end of the focus shaft 182 protrudes into the spline housing cone tooth cavity 130 and its end End is installed with focus cone tooth 131, and the bottom end of the focus shaft 182 is installed with focus rotating block 135, the spline housing 180 internal splines are connected with the splined shaft 132 extended to the left, and the left distal end of the splined shaft 132 is installed with positioned at described The spline axial cone tooth 147 in circle motor cavity 149 is drawn, is embedded with picture circle motor 143, institute in the roof for drawing circle motor cavity 149 admittedly It states picture circle 143 bottom end of motor and is connected by power the oval rotating shaft 145 extended downwardly, circumferential direction on the outer wall of the oval rotating shaft 145 It is installed with the oval rotating shaft being engaged with the spline axial cone tooth 147 and bores tooth 146, it is described to draw the described of 143 top of circle motor Admittedly focal adjustments motor 142 is embedded in fixed block 144, the left and right sides of the focal adjustments motor 142 has been connected by power a left side The middle part screw rod 124 of right extension, the middle part screw rod 124 are threadedly engaged with the sliding block 123 and connect；

Wherein the bottom end of the oval rotating shaft 145 is stretched out outer fix with angularly disposed oblique plate 150 of fixed block 144 and is connected It connects, sliding is equipped with slide cartridge 138 on the outer wall of the oblique plate 150, offers slide cartridge chamber 139 in the slide cartridge 138, described Oblique plate 150 is protruded into the slide cartridge chamber 139 and is slidably connected with the slide cartridge 138, the left-hand end of the oblique plate 150 Spring 140 is elasticly connected between the left side end wall of the slide cartridge chamber 139, the left-hand end rotation in surface of the slide cartridge 138 is set There is cylindrical piece 136, pen clip device 190 is installed on the bottom end face of the cylindrical piece 136, the week of the cylindrical piece 136 is outward Annular groove 137 is offered on wall, sliding is equipped with bracing wire 141, described 141 one end of bracing wire and positioned at left side in the annular groove 137 135 secure fit of focus rotating block connection, the other end of the bracing wire 141 be located at right side the focus rotating block Wire spool 151 in 135 is fixedly connected, and the wire spool 151 is rotatably provided in the focus rotating block 135, it is described around It is equipped with torsional spring in drum 151, is threadedly engaged to be connected on the outer wall of the focus rotating block 135 on right side and screws screw rod 152, the screw rod 152 that screws can press against the outer wall listing fixation of wire spool 151 of the wire spool 151.

In the following, applicant will be carried out with reference to attached drawing 1-5 and a kind of curve plotter described above using introduction, it is first First, in the initial state, lifting screw 115 to the greatest extent be located at lifting axle sleeve 114 in, and then make top plate 119 be in most to At lower position, while lifter plate 122 is in upward state to the greatest extent, while is located remotely from each other sliding block 123 to the greatest extent, Drawing board 101 is located at 119 top of top plate and covers top plate 119 simultaneously；

This equipment when in use, firstly, drawing board 101 is turned over, starts lifting motor 112, drives lifting motor 112 dynamic Power shaft 109 rotates you, and then makes power shaft 109 that power shaft cone tooth 108 be driven to rotate, and power shaft cone tooth 108 passes through Going up and down small shaft 105 drives lifting pinion 104 to rotate, and then rotates lifting big gear 110, to make lifting axle sleeve 114 Rotation, and then it is raised above lifting screw 115, and then top plate 119 is driven to be raised above, after the completion of rising, open top electricity Machine 120 rotates top screws 121, and then lifter plate 122 is driven to move up, to make work box 116 move up, at this time Drawing board 101 is overturn, so that drawing board 101 is located at 116 lower section of work box, is used as drawing board, paper is put into drawing board 101 at this time On, start to adjust focal length, starting focal adjustments motor 142 rotates middle part screw rod 124, and then a left side for adjusting slider 123 It moves right, to adjust elliptic focus distance, after regulating, rotates wire spool 151 by screwing screw rod 152, in turn The length for adjusting bracing wire 141, after regulating, screws screw rod 152, keeps wire spool 151 fixed, and the meeting of cylindrical piece 136 at this time exists Bracing wire 141 is tightened under the elastic force of spring 140, opens picture circle motor 143 at this time, circle motor 143 is drawn and drives 145 turns of oval rotating shaft Dynamic, oval rotating shaft 145 bores tooth 146 by oval rotating shaft and spline axial cone tooth 147 is driven to rotate, and then splined shaft 132 is driven to rotate, Splined shaft 132 rotates focus rotating block 135 and rotates, while oval rotating shaft 145 drives oblique plate 150 to rotate, and then makes slide cartridge 138 Rotation, so that cylindrical piece 136 be made to complete the work of picture ellipse.

Originally clearly demarcated to have the beneficial effect that:

The elevating mechanism can turn over drawing board, start lifting motor, make lifting motor that power shaft be driven to rotate you, And then power shaft is made to drive power shaft cone tooth rotation, power shaft bores tooth and drives lifting pinion to turn by going up and down small shaft It is dynamic, and then lifting big gear is rotated, so that lifting axle sleeve be made to rotate, and then it is raised above lifting screw, and then drive top Plate is raised above, and after the completion of rising, opening top motor rotates top screws, and then lifter plate is driven to move up, thus Work box is moved up, at this time overturns drawing board, is located at drawing board below work box, is used as drawing board；

The adjustable focal length of slide block mechanism, starting focal adjustments motor make middle part screw rod rotation, and then adjusting slider Move left and right, to adjust elliptic focus distance, after regulating, rotate wire spool by screwing screw rod, so adjust Save bracing wire length, after regulating, screw screw rod, fix wire spool, at this time cylindrical piece can under the elastic force of spring incite somebody to action Bracing wire is tightened, and opens picture circle motor at this time, is drawn circle motor and is driven oval rotating shaft rotation, oval rotating shaft bores tooth band by oval rotating shaft Dynamic spline axial cone tooth rotation, and then splined shaft rotation is driven, splined shaft rotates the rotation of focus rotating block, while oval rotating shaft drives Oblique plate rotation, and then slide cartridge is rotated, so that cylindrical piece be made to complete the work of picture ellipse.

In conclusion work box can be moved up and be moved down by the elevating mechanism of the present apparatus, to realize storage Function, guarantee work box be not easy to be encountered when not working, cause to be damaged to, while space can be saved, drawing board can turn over Turn, can both be used when the lid of device using or when drawing board, the adjustable focal length of slide block mechanism, to adjust ellipse Circular focus distance, slide cartridge rotation can make cylindrical piece complete the work of picture ellipse, and it is ellipse that the present apparatus is compared to traditional picture manually Circle, realizes machine from the elliptical purpose of animation, so that accuracy is higher, and this drive mechanism is relatively simple, is less prone to Failure, it is convenient for safeguarding.

It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (3)

1. a kind of curve plotter of the invention, including main body, it is characterised in that: offered in the main body top end surface Port offers containing cavities in the main body of the port bottom, turns in the main body at left and right sides of the port Dynamic to be equipped with lifting axle sleeve, the lifting axle sleeve is extended up and down, the roof on the top of the lifting axle sleeve and the containing cavities Be rotatably assorted connection, and the bottom end of the lifting axle sleeve is rotatably assorted with the bottom wall of the containing cavities and connect, the containing cavities bottom The main body in offer lifting cone tooth cavity, lifting cone tooth cavity is symmetrical set, and the lifting is bored to be set in tooth cavity There is elevating mechanism, the lifting axle sleeve screw-internal thread fit is connected with the lifting screw upwardly extended, the top of the lifting screw It is installed with top plate, is embedded with top motor admittedly in the top plate, top motor bottom end is connected by power the top extended downwardly Screw rod is installed with the slide guide bar extended downwardly on the bottom end of the top plate on the left of the top screws, and the top plate bottom is set There is the lifter plate being threadedly engaged with the top screws, the lifter plate is slidably matched with the slide guide bar, the lifter plate bottom End is installed with the support rod extended downwardly, and the support rod is symmetrical set, and the support rod bottom end is installed with work box, institute It states and offers slide block chamber in work box, fixed block is installed on the rear wall of the slide block chamber, is equipped with sliding block machine in the slide block chamber Structure.

2. a kind of curve plotter according to claim 1, it is characterised in that: the elevating mechanism includes solid embedded in left and right Lifting motor between the symmetrical lifting cone tooth cavity, by taking tooth cavity is bored in the lifting in left side as an example, tooth cavity is bored in the lifting Right side end wall in rotation be equipped with the extended power shaft in left and right, the right side extending end and the liter of the power shaft Motor power connection is dropped, and the left side extended segment of the power shaft is protruded into the lifting cone tooth cavity and its end is fixed dynamic Shaft bores tooth, and rotation is equipped with the small shaft of lifting extended up and down and bores tooth, the lifting in the roof of the lifting cone tooth cavity The bottom extended segment of small shaft is protruded into the lifting cone tooth cavity and its end is installed with the liter in the lifting cone tooth cavity Small shaft cone tooth drops, and the top extended segment of the small shaft of lifting is protruded into the containing cavities and its end is installed with the small tooth of lifting It takes turns, is circumferentially installed with lifting big gear on the outer wall of the lifting axle sleeve, the lifting big gear is nibbled with the lifting pinion Setting is closed, rotation is equipped with torsion shaft on the left and right sides end face of the main body, is installed with overturning on the left of the torsion shaft Supporting plate, the overturning supporting plate are symmetrical set, and rotation is equipped with drawing board, the drawing board between the symmetrical overturning supporting plate Interior left and right is to through slot is symmetrically arranged with, and the top that the drawing board can be turned to the main body covers the top plate, when described When top plate is located at top, the drawing board may be reversed the work box bottom and use as drawing board.

3. according to claim 1 to a kind of curve plotter described in 2, it is characterised in that: the slide block mechanism includes that left and right is prolonged Stretch the sliding block supporting plate being arranged in the slide block chamber, the left and right sides end of the sliding block supporting plate and the left and right sides of the slide block chamber End wall is fixedly connected, and the sliding block supporting plate is equal in the fixed block, the slide block chamber of the left and right sides of the fixed block Sliding is equipped with sliding block, and the sliding block and the sliding block supporting plate are slidably connected, and spline housing cone is offered in the sliding block supporting plate Tooth cavity offers picture circle motor cavity in the fixed block, and by taking the sliding block on right side as an example, the spline housing bores tooth cavity Left side end wall in rotation be equipped with spline housing, the right side extended segment of the spline housing is protruded into spline housing cone tooth cavity and its end End is installed with spline housing cone tooth, is equipped with focus shaft in rotation in the bottom wall of the spline housing cone tooth cavity, the focus shaft Top end protrudes into the spline housing cone tooth cavity and its end is installed with focus cone tooth, and the bottom end of the focus shaft is solid Equipped with focus rotating block, the spline housing internal spline is connected with the splined shaft extended to the left, the left side end of the splined shaft End is installed in the spline axial cone tooth drawn in circle motor cavity, the roof for drawing circle motor cavity admittedly embedded with picture circle electricity Machine, the picture justify motor bottom end and are connected by power the oval rotating shaft extended downwardly, and circumferential direction is fixed on the outer wall of the oval rotating shaft Have and bore tooth with the oval rotating shaft of spline axial cone tooth engagement setting, is embedded with admittedly in the fixed block drawn at the top of circle motor Focal adjustments motor, the left and right sides of the focal adjustments motor be connected by power left and right extend middle part screw rod, it is described in Portion's screw rod is threadedly engaged with the sliding block and connect；Wherein the bottom end of the oval rotating shaft stretch out the fixed block it is outer with it is angularly disposed Oblique plate be fixedly connected, sliding is equipped with slide cartridge on the outer wall of the oblique plate, offers slide cartridge chamber, institute in the slide cartridge Stating oblique plate, to protrude into the slide cartridge intracavitary and be slidably connected with the slide cartridge, the left-hand end of the oblique plate and the slide cartridge Spring is elasticly connected between the left side end wall of chamber, the left-hand end rotation in surface of the slide cartridge is equipped with cylindrical piece, the cylindrical piece Bottom end face on be installed with pen clip device, offer annular groove in the peripheral outer wall of the cylindrical piece, it is sliding in the annular groove Dynamic to be equipped with bracing wire, described bracing wire one end is connect with the focus rotating block secure fit positioned at left side, the bracing wire it is another It holds and is fixedly connected with the wire spool in the focus rotating block for being located at right side, the wire spool is rotatably provided in the focus In rotating block, it is equipped with torsional spring in the wire spool, is threadedly engaged and is connected on the outer wall of the focus rotating block on right side Screw screw rod, it is described screw screw rod and can press against the outer wall listing wire spool of the wire spool fix.