CN106976340A - A kind of para-curve gauge and student's Multi-purpose gauge and its application method - Google Patents
A kind of para-curve gauge and student's Multi-purpose gauge and its application method Download PDFInfo
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- CN106976340A CN106976340A CN201710323748.9A CN201710323748A CN106976340A CN 106976340 A CN106976340 A CN 106976340A CN 201710323748 A CN201710323748 A CN 201710323748A CN 106976340 A CN106976340 A CN 106976340A
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- silk thread
- sliding block
- para
- slide rail
- noumenon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L11/00—Non-circular-curve-drawing instruments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
Abstract
The invention discloses a kind of para-curve gauge and student's Multi-purpose gauge and application method, including：The first noumenon is provided with the first horizontal slide rail；The first sliding block that first slide rail is engaged, and second body be provided with the second slide rail, second slide rail and first slide rail are perpendicular, second slide rail is provided with the second sliding block with matching, second sliding block bypasses a little provided with silk thread and is additionally provided with the first silk thread fixing end for installing on the structure of pen, the second body and applies the elastic component to down spring to second sliding block；3rd body is provided with the second silk thread fixing end with the first noumenon in setting, the 3rd body is relatively fixed；Described silk thread one end is connected to the first silk thread fixing end, and the other end slides to bypass silk thread and bypass a little to be connected with the second silk thread fixing end.Invention achieves the advantage that simple in construction, component is few, operation is flexible, precision is high, making is simple, cost is low.
Description
Technical field
The present invention relates to a kind of para-curve gauge and student's Multi-purpose gauge and its application method, belong to machine-building and drawing work
Tool field.
Background technology
Parabolical definition：To a fixed point and the track of the equidistant point of a boning out on same plane.Fixed point claims
For focus, boning out is referred to as directrix.The design and fabrication of para-curve gauge is fully according to the property of this definition.According to parabolic
The definition of line is as shown in figure 1, with parabola in a plane, AC is parabolical directrix, and O is parabolical focus, in parabolic
The open side of line is a straight line FG, and makes FG parallel to directrix AC, connects AF and makes AF perpendicular to directrix AC, then AF and parabola
E points are intersected at, then AE=EO, AF=EF+EO；Similarly, connection GC intersects at parabola D points, also there is GC=GD+DO.With prior art
Compare, para-curve gauge of the present invention and student's Multi-purpose gauge are that current structure most simple, number of components is minimum, operate most convenient flexible
It is a.
The content of the invention
The present invention in order to solve it is above-mentioned exist in the prior art problem there is provided a kind of para-curve gauge and student's Multi-purpose gauge and
Its application method, to solve now complicated, inconvenient storage, not Portable belt, stability is low, precision is low, be awkward
Technical problem.
The technical solution adopted for the present invention to solve the technical problems is：
The invention provides a kind of para-curve gauge, including：The first noumenon, first slide rail of the first noumenon provided with transverse direction,
First sliding block, first sliding block is provided with cross key, and ensures the laterally free slip in the first slide rail of the first sliding block.Second
Body, second body is provided with the cross bore that is engaged with the first sliding block cross key, and the second body is provided with the
Two slide rails, second slide rail and first slide rail are perpendicular, and second slide rail is slided provided with matching second
Block, second sliding block is bypassed a little provided with silk thread and that the first silk thread is additionally provided with the penholder of pen, the second body is solid for installing
Fixed end and apply the elastic component to down spring to second sliding block, the first silk thread fixing end bypasses a top positioned at silk thread, and
Line is parallel with second slide rail between first silk thread fixing end is bypassed a little with silk thread.3rd body, the 3rd body
With the first noumenon the second silk thread fixing end is provided with setting, the 3rd body is relatively fixed.Silk thread, described silk thread one end is connected to
First silk thread fixing end, the other end slides to bypass silk thread and bypass a little to be connected with the second silk thread fixing end.
So, by using the para-curve gauge of the present invention, it can make that the parabola precision of drafting is higher, resistance to overturning is more
Height, draws and more facilitates, using folding structure, carrying is more facilitated, and the structure using the present invention makes structure simpler
Single, operation more facilitates.According to parabolical definition as shown in figure 1, with parabola in a plane, AC is parabolical standard
Line, O is parabolical focus, and a straight line FG is in parabolical open side, and makes FG parallel to directrix AC, connects AF and makes AF
Perpendicular to directrix AC, then AF intersects at E points with parabola, then AE=EO, AF=EF+EO, similarly, and connection GC intersects at parabola D
Point, also has any point on GC=GD+DO, parabola to be equal to straight line AC apart from sum to straight line FG distance and to focus
The distance between with straight line FG, therefore, a parabola as need to draw only need to meet a key condition, any one
Point to straight line FG vertical range and to focus apart from sum be definite value and be equal between straight line AC and straight line FG away from
From it is exactly a parabola to connect these qualified points, to meet this condition, as long as straight line FG is made into water
Smooth rail, the straight line GC that will be perpendicular to straight line FG makes vertical cursor slide, and cursor slide GC, can on the premise of guarantee is vertical with straight line FG
Along straight line FG or so slidably, the D points in addition on cursor slide GC are a cunnings that can be freely up and down slided along cursor slide GC
Block, as long as a nylon ropes one end is fixed on into focus O points, the other end is fixed on cursor slide GC G points, and centre bypasses sliding block D
Put and cursor slide GC slidably can be moved left and right on the premise of ensureing that nylon ropes are tightened in D points, D points can be with cursor slide
The difference of GC positions, changes the position of oneself along cursor slide GC up and down, then the location track that D points are passed through just forms one
Nomianl para-curve.
In addition, para-curve gauge according to embodiments of the present invention can also have following additional technical feature：
It is preferred that, silk thread perforation is provided with second sliding block, the silk thread is perforated and can worn in silk thread through the silk thread
In hole slidably, the silk thread, which is perforated, to form the silk thread and bypasses a little.
It is preferred that, the first silk thread fixing end includes line ball bolt and line ball nut, and the silk thread passes through the line ball
Perforation on bolt is simultaneously fixed on the second body by line ball nut.
It is preferred that, the 3rd body is provided with the first silk thread newel post jack, and the second silk thread fixing end includes silk thread
Newel post, the bottom of silk thread newel post is arranged in the first silk thread newel post jack, and the upper end of silk thread newel post and the silk thread are affixed.
It is preferred that, the bottom of the silk thread newel post is sharp, is so conveniently fixed in parabolical focus.
It is preferred that, the elastic component is extension spring, and extension spring one end is fixed on the second body lower end, the other end and the second sliding block phase
Even.
It is preferred that, the penholder is installed after pen, and nib and the silk thread, which are bypassed, to be overlapped, and can so make the precision of drafting
It is higher.
It is preferred that, installed additional between the contact surface of first slide rail and the first sliding block and/or the second slide rail and the second sliding block
Sliding bearing, can so reduce frictional force, use and more save labour, and draw more smooth during parabola, precision is easier
Ensure.
It is preferred that, the 3rd body has multiple first silk thread newel post jacks, and multiple first silk thread newel post jacks vertically divide
Silk thread newel post is inserted in suitable first silk thread newel post jack, just can drawn not on the 3rd body by cloth according to focal length size
Confocal parabola.
It is preferred that, the first noumenon and the second body is are detachably connected, and such two big part can easily be put into
In box, it is easy to carry.
It is preferred that, second body is provided with the cross bore being engaged with the cross key, and the cross key passes through institute
State cross bore and fastened by pressure cap, be so assembled together and ensure that the first slide rail and the mutual all the time of the second slide rail are hung down
Directly.
The application method of para-curve gauge of the present invention comprises the following steps：
The first noumenon and the second body are assembled together；
It is placed in the silk thread newel post of the second silk thread fixing end is top on its focal point, the second body is being moved to the 3rd body just
Top, made the vertical line that silk thread is bypassed a little be overlapped with the vertical line of overfocus；The upper-lower position of the second sliding block is adjusted, makes the second silk thread
The distance that fixing end to silk thread is bypassed a little is equal to parabolical focus to be painted to the distance on parabola summit；Silk thread is adjusted, makes it
In tensioned state and tighten the line ball nut in the first silk thread fixing end, during the second body is moved left and right, silk thread
Length no longer changes；
Keep the first noumenon motionless, move left and right the second body, the second sliding block can drive penholder freely up and down to slide, will be automatic
Draw the parabola of needs.
The invention provides a kind of student's Multi-purpose gauge, include any one structure of described para-curve gauge, in addition to
Following structure：
Ruler structure：The one or both sides of the first noumenon and/or the second body are formed with ruler；
Angle gage structure：The side of the first noumenon is formed with protractor；
The first noumenon（Ruler）, protractor and the 3rd body connect as one.
It is preferred that, second body is provided with the second silk thread newel post jack being engaged with the silk thread newel post, silk thread
Newel post is usually inserted in the second silk thread newel post jack.
It is preferred that, on the sliding block silk thread bypass at provided with silk thread perforation.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the principle schematic of the para-curve gauge of the embodiment of the present invention；
Fig. 2 is the structural representation of the para-curve gauge of the embodiment of the present invention；
Fig. 3 is the structural representation of student's Multi-purpose gauge of the embodiment of the present invention.
Description of reference numerals：
In Fig. 2-Fig. 3, the first noumenon 1；First slide rail 2；Second body 3；First sliding block 4；Second slide rail 5；Second sliding block 6；
3rd body 7；Silk thread 8；Silk thread newel post 9；Extension spring 10；Pressure cap 11；Line ball bolt 18；Line ball nut 12；Ruler 13；Protractor
14；First silk thread fixing end 15；Second silk thread fixing end 16；Feather key 17；First silk thread newel post jack 20；Penholder 19；Second
Line end post jack 24；Cross key 21；Cross bore 22；Silk thread perforation 23.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to
The embodiment of accompanying drawing description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.Tie below
Accompanying drawing is closed to further illustrate.
Embodiment 1
In Fig. 2-Fig. 3, the first noumenon 1；First slide rail 2；Second body 3；First sliding block 4；Second slide rail 5；Second sliding block 6；
3rd body 7；Silk thread 8；Silk thread newel post 9；Extension spring 10；Pressure cap 11；Line ball bolt 18；Line ball nut 12；Ruler 13；Protractor
14；First silk thread fixing end 15；Second silk thread fixing end 16；Feather key 17；First silk thread newel post jack 20；Penholder 19；Second
Line end post jack 24；Cross key 21；Cross bore 22；Silk thread perforation 23.
Specifically：
The first noumenon 1 is provided with the first horizontal slide rail 2, it is ensured that the first sliding block 4 is laterally free in the first slide rail 2 to be slided.The
Two bodies 3 are provided with the first sliding block 4 being engaged with the first slide rail 2, and the second body 3 is provided with the second slide rail 5, the second slide rail
5 is perpendicular with the first slide rail 2, and the second slide rail 5 is provided with the second sliding block 6 with matching.
Second sliding block 6 bypasses a little provided with silk thread and silk thread is provided with the penholder 19 of pen, the second sliding block 6 perforates for installing
23, silk thread 8 passes through silk thread perforation 23 and can be in silk thread perforation 23 slidably, and silk thread perforation 23 forms silk threads and bypassed a little.
Penholder 19 is installed after pen, and nib and silk thread, which are bypassed, to be overlapped, and so the precision of drafting can be made higher.
The first silk thread fixing end 15 is additionally provided with second body 3 and applies the elasticity to down spring to second sliding block 6
Part, the first silk thread fixing end 15 bypasses a top positioned at silk thread, and the first silk thread fixing end 15 and silk thread bypass a little between line
Parallel with the second slide rail 5, such as Fig. 1 can so ensure any one point to straight line FG vertical range and the distance of focus
Sum is a definite value and is equal to the distance between straight line AC and straight line FG.Advantageously, elastic component is extension spring 10, the one end of extension spring 10
The lower end of the second body 3 is fixed on, the other end is connected with the second sliding block 6, the effect of extension spring 10 is to make the tensioned state all the time of silk thread 8.
The body 3 of the first noumenon 1 and second is is detachably connected, in order to carry.It is specifically as follows：Set on first sliding block 4
There is cross key 21, the second body 3 is provided with the cross bore 22 being engaged with cross key 21.Cross key 21 is through cross bore 22 and leads to
Cross pressure cap 11 to fasten, so the first noumenon 1, the second body 3 can both be dismantled, can make to be assembled together again ensure that the first cunning
Rail 2 is mutually perpendicular to all the time with the second slide rail 5.
3rd body 7 can integrally be designed with the first noumenon 1 in setting, i.e. the 3rd body 7 is relatively fixed with the first noumenon 1
Or be fixedly connected.3rd body 7 is provided with the second silk thread fixing end 16, and the one end of silk thread 8 is connected to the first silk thread fixing end 15, separately
One end is slided to bypass silk thread and bypass a little to be connected with the second silk thread fixing end 16.
Specifically, the first silk thread fixing end 15 includes line ball bolt 18 and line ball nut 12, silk thread 8 passes through line ball bolt 18
On hole and be fixed on by line ball nut 12 on the second body 3.3rd body 7 is provided with the first silk thread newel post jack 20, the
Two silk thread fixing ends 16 include silk thread newel post 9, and the bottom of silk thread newel post 9 is arranged in the first silk thread newel post jack 20, silk thread end
The upper end of post 9 and silk thread 8 are affixed.Advantageously, the bottom of silk thread newel post 9 is sharp, is so conveniently fixed on parabolical focus
On.3rd body 7 has multiple first silk thread newel post jacks 20, and multiple first silk thread newel post jacks 20 are vertically distributed in the 3rd body
On 7, silk thread newel post 9 is inserted in suitable first silk thread newel post jack 20 according to focal length size, just can be drawn not confocal
Parabola.
The application method of the present embodiment para-curve gauge is as follows：
Assemble in the body 3 of the first noumenon 1 and second, the cross bore 22 that the cross key 21 of the first sliding block 4 is inserted to the second body 3,
Pressure cap 11 is screwed on, then the first sliding block 4 is fitted into the first slide rail 2.Then silk thread newel post 9 is inserted any one on the 3rd body 7
In individual first silk thread newel post jack 20 and silk thread newel post 9 is fixed on its focal point, then the second body 3 is moved to silk thread
Directly over newel post 9, the upper-lower position of the second sliding block 6 is adjusted, silk thread perforation 23 is equal to focus to parabola to the distances of focus
The distance on summit, the other end of tightened wire 8 tightens line ball nut 12, it is ensured that during the second body 3 is moved left and right, silk
The length of line 8 no longer changes, and it is motionless then to pin the first noumenon 1, moves left and right the second body 3, the second sliding block 6 can drive
Penholder 19 is freely up and down slided, and the parabola of needs will be drawn automatically.First silk thread newel post jack 20 has multiple, according to focal length
Size selects more suitably the first silk thread newel post jack 20 that the insertion of silk thread newel post 9 can be drawn into not confocal parabola.
During parabola is drawn, it is necessary to keep the first slide rail 2 vertical all the time with the second slide rail 5, and the edge of the first sliding block 4
The first slide rail 2 horizontally slip holding it is free, smooth；Second sliding block 6 must be able to along the second slide rail 5 freely up and down and smoothly
Slide, and silk thread 8 can freely be slided in silk thread perforation 23；The length of silk thread 8 remains that the constant and moment keeps taut
Tight state.
The parabola of different focal spot sizes is drawn, focus O to parabola summit I distance want adjustable, it is necessary to by second
Body 3 is moved to focus O surface, and the adjustment upper-lower position of the second sliding block 6 makes silk thread on the second sliding block 6 bypass an arrival parabola
Summit I positions, make silk thread on the second sliding block 6 bypass a little to focus distance be equal to focus to parabola summit apart from when, then
Silk thread 8 is tensed and tightens line ball nut 12 and is fixed, satisfactory parabola just can be drawn.
The influence factor of the present embodiment para-curve gauge is as follows：
According to parabola principle, focus O and straight line FG distance only influences the depth in parabola axis direction, does not influence parabola
Shape, therefore the place hole position of silk thread newel post 9 only influences the depth in parabola axis direction.The size of focal length and silk thread newel post
9 with silk thread perforate 23 distance（When second sliding block 6 is in parabola summit I positions）It is relevant, with the place hole position of silk thread newel post 9 without
Close, if the parabola focal length drawn is very big, uppermost first silk thread newel post jack 20 may be selected, to ensure the second body
3 length are used enough, if during the parabola focal length very little of drafting, nethermost first silk thread newel post jack 20 may be selected, to protect
The moving left and right, it is necessary to which to draw parabolical occasion, field a lot, to stable of penholder 19 will not be hindered by demonstrate,proving the bottom of the 3rd body 7
Property, precision is drawn, requirement is convenient for carrying and is not quite similar, therefore according to throwing different in these different requirement design structure details
Thing line gauge is extremely necessary.
The length of silk thread 8 is nor the factor of influence parabolic shape.After focal length determination, parabolic shape is determined that, will not
Change with different above and below straight line FG positions, what is uniquely influenceed is parabolical top/bottom latitude size, by parabola axis
That is drawn on direction is longer, such as Fig. 1, can be by FG positions more up, and a bit, silk thread 8 on the contrary is shorter i.e. for the length of silk thread 8
Can.
The accommodation of the present embodiment para-curve gauge is as follows：
（1）Building, Bridge Design, carpenter make, machining technology field, it is necessary to draw relatively large parabola, use this
Structure shown in embodiment Fig. 2 is than convenient, and the size of this para-curve gauge, can be in the first slide rail 2 and the first sliding block 4 than larger
Between, between the second slide rail 5 and the second sliding block 6 install sliding bearing additional, reducing friction resistance is used and more saved labour, second
Increase the friction between assembly pulley the second sliding block 6 of reduction and silk thread 8 in sliding block 6, more smooth, precision is easier to protect when drawing parabola
Card.
（2）Teaching demonstration instrument, size is medium, and the weight being fit to do is lighter, therefore can also use the present embodiment Fig. 2
Structure, but should not install sliding bearing and assembly pulley additional, can be from the material that coefficient of friction is small, weight is lighter.
（3）Besides student's drawing instrument, the characteristics of this kind of instrument is maximum be：Size is small, needs are easy to carry, best
The multiple types of tools that the integrated student of energy commonly uses.Fig. 2 structure is improved for this, student's Multi-purpose gauge shown in Fig. 3 is designed,
See embodiment 2.
Embodiment 2
As shown in figure 3, the present embodiment additionally provides a kind of student's Multi-purpose gauge, student's Multi-purpose gauge feature：Simple in construction, part
It is few（Two big parts）, be easy to carry（It can be set aside concerns in writing case）.Student's Multi-purpose gauge of the present embodiment 2 has four functions：①
Ruler 2. protractor 3. para-curve gauge 4. compasses.
Student's Multi-purpose gauge structure be the same as Example 1 of the present embodiment 2, difference is：
Ruler structure：Ruler 13 is formed with the one or both sides of the body 3 of the first noumenon 1 and/or second.
Angle gage structure：Protractor 14 is formed with the side of the first noumenon 1, to reduce volume, protractor 14 and first
Body 1（Ruler 13）, the 3rd body 7 connect as one, protractor 14 formation the 3rd body 7 a part.
The attachment structure of the body 3 of the first noumenon 1 and second：The first noumenon 1 is provided with two parallel chutes（Equivalent to
One slide rail 2）, the second body 3（That is cursor slide）Upper bottom surface is protruding with two feather keys（Relative to the first sliding block 4）, feather key and second
Body 3 is integrated design.In two chutes that two feather keys are put on the first noumenon 1 when using, the second body 3 is moved left and right i.e.
It can ensure that the first body body 1 is vertical all the time with the second body 3.
In addition, the second body 3（Cursor slide）Provided with the second silk thread newel post jack 24 being engaged with silk thread newel post 9.When putting
When putting, silk thread newel post 9 is inserted in the second silk thread newel post jack 24.When deployed, by silk thread newel post 9 from the second silk thread newel post jack
Taken off on 24 in the first silk thread newel post jack 20 for being inserted in and being adapted on the 3rd body 7.
It follows that student's Multi-purpose gauge without when be to be divided to two big parts storages to carry, ruler and protractor
It is integral, silk thread newel post 9 is inserted into when flat in the second silk thread newel post jack 24 on cursor slide, therefore whole cursor slide combination is
One.The two big part dimensions easily can be put into writing case, very convenient to carry.
The usage of compasses, draws bowlder, and only need to use the second body 3 combines, and top by silk thread newel post 9 is pressed in center of circle position
Put, look at the radius that the scale on the second body 3 slides into the second sliding block 6 needs, tightened wire 8, tighten line ball nut 12,
Pin silk thread newel post 9 and turn round the second body 3, it is possible to draw out the circle or circular arc of needs.Center of circle surrounding space needs are sufficiently large,
There can not be the barrier for hindering the rotation of the second body 3.
The present embodiment student's Multi-purpose gauge has that simple in construction, part is few, portable advantage, student's Multi-purpose gauge
Without when can be divided to what two big parts storages were carried, ruler 13 and protractor 14 are integral, and silk thread newel post 9 is inserted in the when flat
In the second silk thread newel post jack 24 on two bodies 3, the whole combination of second body 3 is integral, the two big part dimensions
Easily it can put into writing case, it is very convenient to carry.
This para-curve gauge and student's Multi-purpose gauge have that simple in construction, component is few, stability is high, operation is flexible, precision is high,
Convenient storage and carrying, the advantage that making is simple, cost is low.This para-curve gauge only has two big parts to constitute, and is handed in the absence of tilting
Fork and the mechanism mutually slided in crosspoint, therefore integral rigidity is smaller than larger, deformation, operation is flexible, so resistance to overturning
High, drafting accuracy is high.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
1. a kind of para-curve gauge, it is characterised in that including：
The first noumenon, the first noumenon is provided with the first horizontal slide rail；
Second body, second body is provided with the first sliding block being engaged with first slide rail, and is set on the second body
There is the second slide rail, second slide rail and first slide rail are perpendicular, second slide rail is provided with matching the
Two sliding blocks, second sliding block bypasses a little provided with silk thread and is additionally provided with first on the penholder of pen, the second body for installing
Line fixing end and apply the elastic component to down spring to second sliding block, the first silk thread fixing end is bypassed on a little positioned at silk thread
Side, and the first silk thread fixing end bypassed a little with silk thread between line it is parallel with second slide rail；
3rd body, the 3rd body is with the first noumenon in setting is relatively fixed, and the 3rd body is fixed provided with the second silk thread
End；
Silk thread, described silk thread one end is connected to the first silk thread fixing end, and the other end, which is slided, to be bypassed silk thread and bypass a little and the second silk thread
Fixing end is connected.
2. para-curve gauge according to claim 1, it is characterised in that silk thread perforation is provided with second sliding block, described
Silk thread is through silk thread perforation and can be in silk thread is perforated slidably, and the silk thread, which is perforated, to be formed the silk thread and bypass
Point.
3. para-curve gauge according to claim 1, it is characterised in that the first silk thread fixing end include line ball bolt and
Line ball nut, the silk thread is fixed on second body on through the perforation on the line ball bolt and by line ball nut.
4. para-curve gauge according to claim 1, it is characterised in that the 3rd body is inserted provided with the first silk thread newel post
Hole, the second silk thread fixing end includes silk thread newel post, and the bottom of silk thread newel post is arranged in the first silk thread newel post jack,
The upper end of silk thread newel post and the silk thread are affixed.
5. para-curve gauge according to claim 1, it is characterised in that the elastic component is extension spring, extension spring one end is fixed on
Second body lower end, the other end is connected with the second sliding block.
6. para-curve gauge according to claim 1, it is characterised in that the 3rd body has multiple first silk thread newel posts to insert
Hole, multiple first silk thread newel post jacks are vertically distributed on the 3rd body.
7. para-curve gauge according to claim 1, it is characterised in that the first noumenon is with Detachable connection structure and the
Two bodies are connected.
8. para-curve gauge according to claim 1, it is characterised in that on the sliding block silk thread bypass at be provided with silk thread
Perforation.
9. the application method of the para-curve gauge described in claim 1, it is characterised in that comprise the following steps：
The first noumenon and the second body are assembled together；
Second silk thread fixing end is placed on its focal point, the second body is moved to directly over the 3rd body, made silk thread
The vertical line bypassed a little is overlapped with the vertical line of overfocus；The upper-lower position of the second sliding block is adjusted, makes the second silk thread fixing end to silk thread
The distance bypassed a little is equal to parabolical focus to be painted to the distance on parabola summit；Silk thread is adjusted, tensioned state is at
And in the second body moving process, the length of silk thread no longer changes；
Keep the first noumenon motionless, move left and right the second body, the second sliding block can drive penholder freely up and down to slide, will be automatic
Draw the parabola of needs.
10. a kind of student's Multi-purpose gauge, it is characterised in that including the para-curve gauge described in claim any one of 1-8, in addition to
One or more of following structure：
Ruler structure：The one or both sides of the first noumenon and/or the second body are formed with ruler；
Angle gage structure：The side of the first noumenon is formed with protractor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710323748.9A CN106976340A (en) | 2017-05-10 | 2017-05-10 | A kind of para-curve gauge and student's Multi-purpose gauge and its application method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710323748.9A CN106976340A (en) | 2017-05-10 | 2017-05-10 | A kind of para-curve gauge and student's Multi-purpose gauge and its application method |
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| CN106976340A true CN106976340A (en) | 2017-07-25 |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3311981A (en) * | 1966-08-19 | 1967-04-04 | Warren P Poslusny | Parabola tracing apparatus |
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| CN202378556U (en) * | 2011-11-16 | 2012-08-15 | 张富培 | Parabola definition teaching demonstration ruler |
| CN205364951U (en) * | 2016-01-31 | 2016-07-06 | 临沂大学 | Multipurpose math teaching aid |
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| US3311981A (en) * | 1966-08-19 | 1967-04-04 | Warren P Poslusny | Parabola tracing apparatus |
| CN2089877U (en) * | 1990-11-10 | 1991-12-04 | 俞师强 | Curve ruler with compasses board position |
| CN2438590Y (en) * | 2000-08-30 | 2001-07-11 | 徐明凯 | Pare-curve drawing instrument |
| CN2500494Y (en) * | 2001-08-21 | 2002-07-17 | 沈祖翼 | Parabolic diagraph |
| CN2602944Y (en) * | 2003-03-04 | 2004-02-11 | 徐新华 | Parabola instrument |
| CN2693490Y (en) * | 2004-01-18 | 2005-04-20 | 朱邦明 | Parabola drawing instrument |
| CN101293454A (en) * | 2007-04-24 | 2008-10-29 | 范高洁 | Novel para-curve gauge |
| CN201353957Y (en) * | 2008-09-09 | 2009-12-02 | 赵昆 | Analytic geometry surveying instrument |
| CN201792648U (en) * | 2010-08-04 | 2011-04-13 | 湖州师范学院 | Parabola drawing tool |
| CN202378556U (en) * | 2011-11-16 | 2012-08-15 | 张富培 | Parabola definition teaching demonstration ruler |
| CN205364951U (en) * | 2016-01-31 | 2016-07-06 | 临沂大学 | Multipurpose math teaching aid |
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Application publication date: 20170725 |