CN214449842U - Superposed double-parameter clam-line drawing gauge - Google Patents

Abstract

The utility model discloses a superimposed biparameter mussel coil gauge, include: first parameter slide bar, asymptote slide bar, utmost point locating lever, radial bull stick, the smooth frame of second parameter and branch line painting brush, the asymptote slide bar is pegged graft in the one end of first parameter slide bar, utmost point locating lever sliding connection is on first parameter slide bar, radial bull stick one end is rotated and is connected on utmost point locating lever, and slider sliding connection on it is on the asymptote slide bar, the smooth frame of second parameter is arranged in on radial bull stick, the second parameter is arranged in respectively to the painting brush on the smooth frame of second parameter, and this device has: the operation is simple, and all functions can be completed by only pushing the handle. The functions are complete: the drawing gauge can be quickly constructed, the conchoid graph with any parameter can be drawn, a plurality of conchoid graphs can be drawn simultaneously, and the parameter adjustment is simple, convenient, quick and arbitrary. The structure is compact, the cost is low, the carrying is convenient, and the folding ruler becomes a straight ruler; the applicability is strong: can be used in any occasions. The method is suitable for teaching, designing, manufacturing and the like.

Description

Superposed double-parameter clam-line drawing gauge

The technical field is as follows:

the utility model relates to a teaching aid specifically is superimposed biparametric mussel chart gauge.

Background art:

the mussel thread is also called Nike Midi mussel threadThe conchoid line formed by straight lines is the most commonly used figure, is widely applied in the industries of agriculture, communication, manufacturing and the like, is the content which is necessary to be mastered by universities and middle school students, and has the polar coordinate equation of rho ═ ase theta +/-b and the rectangular coordinate equation of (x-a)²(x²+y²)＝b²x²Because the curve is a curve formed by non-orthogonal motion of two points on one straight line and the other straight line, the curve has two parameters, the appearance is simple and the essence is complex, so that teachers or students have great difficulty in teaching and the teaching effect is seriously influenced. In addition, engineering designers draw drawings, machining personnel process parts and the like, and need special drawing tools which are rapid and convenient to use to improve efficiency and precision.

In order to solve the above problems, only a few devices related to the aspect of conchoid are presented in the near stage, for example, a "higher mathematics plotter" is given in the document with the patent application number of 201720119674.2, and comprises a main scale, an auxiliary scale, a compass scale, a first slide block, a second slide block, a third slide block, a pen slot and a first bolt, so that the problems of difficult storage and slow drawing speed in the prior art are solved, and the technology cannot be used for drawing the conchoid with double parameters. The patent application number 201320053477.7 discloses a conchoidal air compressor, which comprises a piston and a crankshaft, wherein a round slider (3) is eccentrically movably connected to the crankshaft, the outer side of the round slider is movably connected with the piston, and the round slider is arranged in a sliding rail. The motion rules of the three parts in the device are simple rotation and linear motion, the inertia force is completely balanced in theory, and the advantage on kinematics is realized. The technology only utilizes the conchoid characteristics to have advantages in function, but cannot complete drawing of the double-parameter straight conchoid image.

The utility model has the following contents:

in order to solve the technical problem, the utility model discloses superimposed biparameter mussel chart gauge, include: the double-parameter clam shell chart gauge of the folding type, characterized by, include: the drawing pen comprises a first parameter slide bar, an asymptote slide bar, an electrode positioning bar, a radial rotating bar, a second parameter slide frame and a branch drawing pen, wherein the asymptote slide bar is inserted at one end of the first parameter slide bar, the electrode positioning bar is connected to the first parameter slide bar in a sliding manner, one end of the radial rotating bar is connected to the electrode positioning bar in a rotating manner, a sliding block on the radial rotating bar is connected to the asymptote slide bar in a sliding manner, the second parameter slide frame is arranged on the radial rotating bar, the branch drawing pen is respectively arranged on the second parameter slide frame,

the pole positioning rod comprises a second round tube, a first round rod and a second handle, wherein a fourth pin, a first round ring disc, a second round ring disc, a third round tube and a third round ring disc are sequentially arranged at the middle lower part of the outer wall of the second round tube, inner circular holes of the first round ring disc, the second round ring disc and the third round ring disc are fixed on the second round tube, a third round tube is sleeved between the second round ring disc and the third round ring disc to form a shaft sleeve, a third groove is formed in the outer wall of the second round tube at the upper part of the fourth pin, movable second round rods are respectively arranged in the third groove, fixed fourth round ring discs are arranged at the inner ends of the two second round rods in the second round tube, a fixed first round rod is arranged in the inner circular hole of each fourth round ring disc, a fixed conical head is arranged at the lower end of the first round rod below the fourth round ring disc, and a spiral first spring is arranged outside the first round rod above the fourth round ring disc, the lower end of the first spring is fixed on the fourth circular ring disc, a fixed second handle is arranged at the upper end of the first spring, and the lower circular surface of the second handle is fixed at the upper end of the second circular tube.

Further still, the first parameter slide bar is a rectangular slotted slide bar.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a superimposed biparameter mussel coil gauge, easy operation as long as promote the handle just can accomplish all functions.

2. The superposed double-parameter mussel coil gauge has complete functions: the drawing gauge can be quickly constructed, the conchoid graph with any parameter can be drawn, a plurality of conchoid graphs can be drawn simultaneously, and the parameter adjustment is simple, convenient, quick and arbitrary. The applicability is strong: can be used in any occasions. The method is suitable for teaching, designing, manufacturing and the like.

3. At present, no product of the type is available on the market, the folding type double-parameter concha Anodonta seu panulirus rule is compact in structure, low in cost, safe, reliable, light and handy, and the folding type double-parameter concha Anodonta seu panulirus rule becomes a straight ruler after being folded.

Description of the drawings:

the accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. On the attachment

In the figure:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of a first parameter slide bar according to the present invention.

Fig. 3 is a schematic structural view of the middle asymptote sliding rod according to the present invention.

Fig. 4 is a schematic structural diagram of the middle positioning rod of the present invention.

Fig. 5 is a schematic structural view of the middle radial rotating rod of the present invention.

Fig. 6 is a schematic structural diagram of a second parameter slide frame in the present invention.

Fig. 7 is a schematic structural diagram of a mid-line drawing pen of the present invention.

Reference numerals: 1-a first parameter slide bar, 11-a first rectangular plate, 12-a first groove, 13-a first slide block, 14-a first scale, 15-a second rectangular plate, 16-a first hinge, 17-a first foot support plate and 18-a first pin; 2-an asymptote slide bar, 21-a third rectangular plate, 22-a second groove, 23-a second sliding block, 24-a second scale, 25-a first groove, 26-a second hinge, 27-a second footing support plate, 28-a second pin, 29-a third pin, 210-a first circular tube, 211-a first handle and 212-a spotlight; 3-pole positioning rod, 31-second circular tube, 32-first circular rod, 33-second handle, 34-first circular ring disc, 35-second circular ring disc, 36-third circular tube, 37-third circular ring disc, 38-conical head, 39-fourth circular ring disc, 310-first spring, 311-third groove, 312-second circular rod and 313-fourth pin; 4-radial rotating rod, 41-fourth rectangular plate, 42-fourth groove, 43-third slide block, 44-first round hole, 45-second round hole and 46-third round hole; 5-a second parameter sliding frame, 51-a fifth rectangular plate, 52-a fifth groove, 55-a third scale, 56-a first groove, 57-a fourth sliding block, 58-a beam frame with a rod, 59-a third round rod, 510-a fifth pin and 511-a light hole; 6-branch line painting brush, 61-fourth round tube, 62-fifth ring disc, 63-first spring, 64-pen point with rod, 65-sixth ring disc, 66-sixth pin, 67-fifth slide block and 68-seventh pin.

The specific implementation mode is as follows:

as shown, the superimposed biparameter conchoid graph comprises: first parameter slide bar 1, asymptote slide bar 2, utmost point locating lever 3, radial bull stick 4, second parameter sliding frame 5 and branch line painting brush 6, first parameter slide bar 1 is the rectangular trough of belt slide bar, asymptote slide bar 2 pegs graft in the one end of first parameter slide bar 1, 3 sliding connection of utmost point locating lever are on first parameter slide bar 1, radial bull stick 4 one end is rotated and is connected on utmost point locating lever 3, and slider sliding connection on it is on asymptote slide bar 2, radial bull stick 4 is arranged in to second parameter sliding frame 5, branch line painting brush 6 is arranged in respectively on second parameter sliding frame 5.

As shown in fig. 2, the first parameter slide bar 1 includes a first rectangular plate 11, a second rectangular plate 15 and a first anchor plate 17, the first rectangular plate 11 is provided with a first groove 12 and a first scale 14, the first groove 12 is provided with a first slider 13, the first slider 13 is provided with a first pin 18, the middle of the right end of the first rectangular plate 11 is provided with the second rectangular plate 15, the second rectangular plate 15 is an inner insertion plate provided with a pin hole, the left end of the first rectangular plate 11 is provided with a first hinge 16, the first hinge 16 is a right-angle hinge, the outer end of the first hinge 16 is provided with the first anchor plate 17, the first anchor plate 17 is parallel to the first rectangular plate 11 when folded, and the first anchor plate 17 is perpendicular to the first rectangular plate 11 when unfolded.

As shown in fig. 3, the asymptotic slider 2 includes a third rectangular plate 21 and a second ground support plate 27, the third rectangular plate 21 is respectively provided with a second groove 22, a third pin 29 and a second scale 24, the second groove 22 is internally provided with a second slider 23, the second slider 23 is respectively provided with a second pin 28 and a fixed first circular tube 210, the upper end of the first circular tube 210 is provided with a fixed first handle 211, the center of the upper surface of the first handle 211 is provided with a spot light 212, and the spot light 212 can emit light beams parallel to the tube wall downwards and can emit light thereon as an indicator light. The zero point of the second scale 24 is located in the middle of the center line of the second groove 22, second hinges 26 are respectively arranged below two ends of the third rectangular plate 21, a second foot supporting plate 27 is arranged at the outer end of each second hinge 26, and the second foot supporting plate 27 is the same as the first foot supporting plate 17. The middle part of the front side of the third rectangular plate 21 is provided with a first groove 25, and the third pin 29 is arranged above and in the middle of the first groove 25.

As shown in fig. 4, the polar positioning rod 3 includes a second circular tube 31, a first circular rod 32 and a second handle 33, a fourth pin 313, a first circular disc 34, a second circular disc 35, a third circular tube 36 and a third circular disc 37 are sequentially disposed at the middle lower portion of the outer wall of the second circular tube 31, inner circular holes of the first circular disc 34, the second circular disc 35 and the third circular disc 37 are fixed on the second circular tube 31, the third circular tube 36 is sleeved between the second circular disc 35 and the third circular disc 37 to form a shaft sleeve, a third groove 311 is disposed on the outer wall of the second circular tube 31 at the upper portion of the fourth pin 313, movable second circular rods 312 are disposed in the third groove 311, fixed fourth circular discs 39 are disposed at the inner ends of two second circular rods 312 in the second circular tube 31, a fixed first circular rod 32 is disposed in an inner circular hole of the fourth circular disc 39, a fixed conical head 38 is disposed at the lower end of the first circular rod 32 below the fourth circular disc 39, a spiral first spring 310 is arranged outside the first round rod 32 on the fourth round ring disc 39, the lower end of the first spring 310 is fixed on the fourth round ring disc 39, a fixed second handle 33 is arranged at the upper end of the first spring 310, the second handle 33 is a hard plate disc, the lower round surface of the second handle 33 is fixed at the upper end of the second round pipe 31, the conical head 38 of the second round rod 312 can be retracted into the second round pipe 31 and fixed by a fourth pin 313 by pulling up, and the conical head 38 of the fourth pin 313 can be extended out of the second round pipe 31 by loosening the fourth pin 313.

As shown in fig. 5, the radial rotating rod 4 includes a fourth rectangular plate 41 and a third sliding block 43, the fourth rectangular plate 41 is provided with a first circular hole 44 and a fourth groove 42 respectively on the left and right, the width of the fourth groove 42 is greater than the diameter of the second circular tube 31, the fourth groove 42 is provided with the third sliding block 43 therein, the third sliding block 43 is provided with a third circular hole 46 and a second circular hole 45 respectively thereon, and the third circular hole 46 is located between the two second circular holes 45.

As shown in fig. 6, the second parameter sliding frame 5 includes a fifth rectangular plate 51 and a belt beam frame 58, a fifth groove 52 is formed in the middle of the upper surface of the fifth rectangular plate 51, the width of the fifth groove 52 is greater than the diameter of the second circular tube 31, symmetrical first grooves 56 and third grooves 55 are respectively formed in the front and rear side surfaces of the fifth rectangular plate 51, the zero point of the third grooves 55 is in the middle, fourth sliders 57 are respectively arranged in the first grooves 56, the belt beam frame 58 is arranged on the fourth sliders 57, the belt beam frame 58 is a U-shaped beam frame, the belt beam frame 58 includes a strut and a beam, the outer ends of the strut are respectively fixed on the fourth sliders 57, the beam is arranged on the fifth rectangular plate 51, a fifth pin 510 and a symmetrical third circular rod 59 are respectively arranged on the strut and the beam of the belt beam frame 58, the fifth pin 510 can fix the belt beam frame 58 on the fifth rectangular plate 51, a light hole 511 is formed between the third round bars 59.

As shown in fig. 7, the branch line painting brush 6 includes a fourth circular tube 61 and a pen point 64 with a rod, a fifth slider 67 is disposed at the upper end of the fourth circular tube 61, a seventh pin 68 is disposed on the fifth slider 67, a sixth pin 66 is disposed in the middle of the outer wall of the fourth circular tube 61, a fifth circular disc 62 is disposed at the lower end of the fourth circular tube 61, the inner circumference of the fifth circular disc 62 is fixed on the fourth circular tube 61, a spiral first spring 63 is disposed below the fifth circular disc 62, a fixed sixth circular disc 65 is disposed at the lower end of the first spring 63, the sixth circular disc 65 is a transparent hard plate, a fixed pen point 64 with a rod is disposed in an inner circular hole of the sixth circular disc 65, and the upper end of the pen point 64 with a rod passes through the first spring 63 and is inserted into the fourth circular tube 61.

The utility model discloses a working principle of superimposed biparameter mussel chart rule is: according to the unidirectionality of the linear groove sliding blocks, the two linear groove sliding blocks are unified into the directional motion of a variable intersection point by utilizing shaft rotating connection, and the track formed by two end points when the middle point of a linear section with constant length on a ray moves along the fixed straight line is recorded by a painting brush through the variability of the intersection point of the ray rotating around the point and the fixed straight line. The continuous movement and positioning of the slide block are fully utilized to realize the continuous value taking of multiple parameters. The method is characterized in that: the operation is simple, and all functions can be completed by only pushing the handle under the initial condition. The multifunctional ruler has complete functions, can draw the conchoid line graph when two parameters take any value, or draw a plurality of conchoid lines simultaneously, and becomes a ruler after being folded and synthesized, so that the applicability is strong.

The working principle is as follows:

assembling an instrument: 1] a T-shaped bracket formed by combining a first parameter slide bar 1 and an asymptote slide bar 2 is fixed by a third pin 29, the T-shaped bracket with the first foot support plate 17 and the second foot support plate 27 unfolded is placed on a platform, and the position is adjusted to be in a stable state. 2] the conical head 38 of the pole positioning rod 3 is retracted and fixed by a fourth pin 313, and the radial direction rotating rod 4 is placed on the pole positioning rod 3. 3] the combined body of the radial rotating rod 4 and the polar positioning rod 3 is arranged on the T-shaped bracket, and the first sliding block 13 is fixed on the first rectangular plate 11 by using the first pin 18 temporarily. 4] the third slide block 43 on the radial rotating rod 4 is connected with the first round tube 210 on the asymptotic sliding rod 2, and the second slide block 23 is fixed on the third rectangular plate 21 by the second pin 28. 5] the second parametric slide frame 5 is placed on the radial direction rotating rod 4, and the beam frame 58 with the rod is fixed on the middle part of the fifth rectangular plate 51 by using the fifth pin 510 temporarily. And 6, two branch paintbrushes 6 are taken to respectively retract the pen points 64 with the rods, the two branch paintbrushes 6 are respectively placed on the second parameter sliding frame 5, the part close to the polar positioning rod 3 is called as an inner branch paintbrush 6, and the other part is called as an outer branch paintbrush 6.

Symbol setting: 1]Mussel thread: also known as nico midis mussel line, polar equation is ρ ═ asec θ ± b, rectangular equation is (x-a)²(x2+y²) B2x2, a is the first parameter b is the second parameter. 2]The locus characteristics, let the equation be a straight line C and a fixed point O, a ray is led through the point O, and a line segment with the equal length b is made on each ray L from the intersection point P of the ray L and the straight line C to two sides, the locus of the tail end M1 of the inner line segment and the tail end M2 of the outer line segment is the conchoid, namely OM₁＝OP-b，OM₂Point O is called pole, the trajectory of M1 is called inner branch, the trajectory of M2 is called outer branch, inner branch vertices a (a-B,0), outer branch vertices B (a + B,0), and straight line C is the asymptote of the two curves. 3]The projection of each point on the center line of the conical head 38 on the polar positioning rod 3 on the drawing board represents a point O. 4]The centre line of the first slot 12 on the first parameter slide 1 represents the pole axis or the inner and outer sidesThe axis of symmetry of the mussel branch line. 5]The centerline of the second slot 22 on the asymptotic slider 2 represents a straight line C, and a point on the centerline of the first circular tube 210 represents an intersection point P, represented by a projection of the center point of the beam of the spotlight 212. 6]The point on the centerline of the bandoliered nib 64 on the inner strongpoint brush 6 represents the inner strongpoint M1. 7]The point on the centerline of the nibs 64 on the outer line brush 6 represents the outer line pivot point M2. 8]The coordinate system is Oxy. 9]The first scale 14 coincides with the horizontal axis of the coordinate system Oxy. 10]The second scale 24 coincides with the longitudinal axis Oy of the coordinate system Oxy. 11]The superposed double-parameter concha chart is represented by a letter V.

Adjusting the initial position: 1] determining the value of the first parameter a. 2] the first pin 18 is released, the second handle 33 is grasped to move the first round bar 32 to the position where the center line is located at the a value of the first scale 14, and the first slider 13 is fixed on the first rectangular plate 11 by the first pin 18. 3] the second pin 28 is released, the first handle 211 is grasped, the first round tube 210 is moved to the zero point of the central line of the second scale 24, and the second slide block 23 is fixed on the third rectangular plate 21 by the second pin 28. And 4] the fifth pin 510 is released, the fifth rectangular plate 51 is moved to a zero point of the third scale 55 at the center line of the first circular tube 210, and the belt beam frame 58 is fixed to the fifth rectangular plate 51 by the fifth pin 510. And 5, moving the internal linear painting brush 6 to the position where the center line of the pen point 64 with the rod is positioned at the b value of the third scale 55 in the direction of the first round rod 32, and fixing the internal linear painting brush 6 on the second parameter sliding frame 5 by using a clamp. Moving outer branch brush 6 to the position where the center line of nibs 64 with sticks is located at the b value of third scale 55 in the opposite direction of first round bar 32, and fixing outer branch brush 6 on second parameter slide 5 with a jig. 7] turn off the spot light 212.

And (3) curve drawing: for a > B, 1] a sheet S is fixed to the table, on which a straight line C, C with the coordinate system xy and the equation x ═ a intersects the axis Ox at point P0(a, 0), the inner curve vertices a (a-B,0) and the outer curve vertices B (a + B, 0). 2] the fourth pin 313 is loosened, and the conical head 38 on the pole positioning rod 3 extends out of the second round tube 31. The spot light 212 is turned on. And 3, the drawing gauge V is arranged on the S, the conical head 38 is aligned with the origin O and then fixed by a fourth pin 313, and the central point of the light beam of the spotlight 212 is aligned with a point P0. And 4, unlocking the inner branched painting brush 6 to enable the pen point 64 with the rod to be aligned with the point A on the S, and unlocking the outer branched painting brush 6 to enable the pen point 64 with the rod to be aligned with the point B on the S. 5] locking the first and second foot supports 17, 27 to stabilize V. 6] loosening the second pin 28. The T-bar is fixed by holding the second handle 33 with one hand, and sliding the first tube 210 along the asymptotic slider bar 2 counterclockwise by holding the first handle 211 with one hand, M1 and M2 are simultaneously away from points A and B respectively to draw a curve. 7] when the points M1 and M2 reach the extreme or desired positions M11 and M21, respectively, the first tube 210 is centered at h where the second scale 24 is forward, stopping pushing the first handle 211. 8] the two nibs 64 are retracted and fixed. 9] grasping the first handle 211 pushes the first tube 210 clockwise to slide along the asymptotic slider bar 2 and back to point P0. 10] unlock the two nibs 64 at points a and B, respectively, and continue to push the first barrel 210 clockwise to slide along the asymptotic slider 2, while M1 and M2 simultaneously trace the curve away from points a and B, respectively, in opposite directions. 11] when the center of the first round tube 210 is located at the position h opposite to the second scale 24, the pushing of the first handle 211 is stopped, and the points M1 and M2 reach M12 and M22, respectively. 12] removing V from S. 13] draw a continuous complete and symmetrical inner mussel line M11AM12 and outer mussel line M21BM22 on S.

In the case of a ═ b, 1] the point a coincides with the origin O, 7], 8], 9, 11-13 ] coincides with a > b. 2] turn on the spot light 212. 3] the drawing gauge V is placed on S, and the center point of the light beam of the spotlight 212 is aligned with the point P0. And 4, unlocking the inner branched painting brush 6 to enable the pen point 64 with the rod to be aligned with the point A on the S, and unlocking the outer branched painting brush 6 to enable the pen point 64 with the rod to be aligned with the point B on the S. 5] locking the first and second foot supports 17, 27 to stabilize V. 6] loosening the second pin 28. The T-shaped bracket is fixed by pressing the second handle 33 with one hand, the first handle 211 is held with one hand to push the first round tube 210 to slide along the asymptotic sliding rod 2 anticlockwise, M1 and M2 are respectively and simultaneously separated from the points A and B to draw curves in opposite directions, the conical head 38 is retracted when M1 is close to the point O, and the conical head 38 is returned to the point O and fixed by the fourth pin 313 when M1 is separated from the point O. 10] unlocking the two nibs 64 at points a and B, respectively, continuing to push the first barrel 210 clockwise sliding along the asymptotic slider 2, extending the conical head 38 again and fixing it with the fourth pin 313 after M1 and M2 leave points a and B, with M1 and M2 tracing in the opposite direction.

For a < b, 1-5 ], 7], 8], 11-13 and a > b. 6] loosening the second pin 28. The T-shaped bracket is fixed by pressing the second handle 33 with one hand, the first handle 211 is held with one hand to push the first round tube 210 to slide along the asymptotic sliding rod 2 anticlockwise, and when M1 and M2 leave the curve drawn by points A and B, the fourth pin 313 is released to align the conical head 38 with the origin O and then fixed. 9] grasping the first handle 211 pushes the first barrel 210 clockwise to slide along the asymptotic slider bar 2, retracting the conical head 38 when M1 approaches point O, returning the conical head 38 to point O when M1 leaves point O and securing with the fourth pin 313. Until it reaches point P0. 10] unlocking the two nibs 64 at points a and B, respectively, continuing to push the first barrel 210 clockwise sliding along the asymptotic slider 2, extending the conical head 38 again and fixing it with the fourth pin 313 after M1 and M2 leave points a and B, with M1 and M2 tracing in the opposite direction. As M1 approaches point O, the cone head 38 is retracted, and as M1 moves away from point O, the cone head 38 is returned to point O and secured with the fourth pin 313.

And (4) ending drawing: the device is restored to the initial state.

The utility model discloses a superimposed biparameter mussel line graph has the mussel line function that draws the second parameter and get the multivalued certainty, and operating procedure is:

firstly, assembling an instrument: 1-5 ] has the same function as drawing two fixed-parameter conchoids. And 6] taking 2n branch painting brushes 6, respectively retracting the pen points 64 with the rods, placing all the branch painting brushes 6 on the second parameter sliding frame 5, wherein the n branch painting brushes 6 close to one side of the polar positioning rod 3 are called inner branch painting brushes 6, and the n on the other side are called outer branch painting brushes 6.

Setting symbols: 1]-5]，8]-11]The function is the same as that of drawing two constant-parameter conchoids. 6]The points on the center line of the pen point 64 with the rod on the n inner-line painting brushes 6 represent the moving point M on the inner-line_1i(i＝1-n)。7]The points on the center line of the pen point 64 with the pen point on the n outer supporting line paintbrushes 6 represent the dynamic point M on the outer supporting line_2i(i＝1-n)。

Thirdly, adjusting the initial position: 1]-4]，7]The function is the same as that of drawing two constant-parameter conchoids. 5]Respectively moving n internal line brushes 6 to the center line of the pen point 64 with the rod to be positioned at the third scale 55 at the position of the first round rod 32Upwards b_1iAt this value, they are fixed to the second parameter slide 5 with a jig. 6]Moving n outer line pens 6 to the b where the center line of the styled pen point 64 is located at the third scale 55 in the opposite direction of the first round bar 32_2iAt this value, they are fixed to the second parameter slide 5 with a jig.

Fourthly, drawing a curve: for a>b，2]-3]，5]，7]-13]The function is the same as that of drawing two constant-parameter conchoids. 1]The intersection point P0(a, 0) of the straight line C with the coordinate system Oxy and the equation x ═ a and the axis Ox is drawn as the vertex of the internal thread

Vertex of outer branch

Is fixed on the flat plate. 4]Unlocking the internal wire brush 6 to align the penpoint 64 with the S-up point A_iUnlocking the lateral line brush 6 to align the penpoint 64 with the S-up point B_i。6]The second pin 28 is released. Pressing the second handle 33 with one hand to fix the T-shaped bracket, holding the first handle 211 with one hand to push the first round tube 210 counterclockwise to slide along the asymptotic sliding rod 2, M_1iAnd M_2iRespectively leave the points A simultaneously_iAnd B_iMultiple curves were drawn.

Fifthly, drawing is finished: the device is restored to the initial state.

The utility model discloses a superimposed biparametric mussel coil gauge has the coincide function, lift first in command 211, second in command 33 and third pin 29 off, and first parameter slide bar 1, asymptote slide bar 2 and radial bull stick 4 can superpose together.

The utility model discloses superimposed biparameter mussel coil gauge's economic value and application prospect: along with the technical progress and economic development, advanced equipment is required to improve the teaching effect and the working efficiency, a superposed double-parameter mussel coil gauge which is simple to operate and convenient to use is urgently needed, thousands of places exist in high schools in China, and a plurality of construction and manufacturing enterprises and design and decoration companies are provided, so that the quantity is considerable, the market prospect is very wide, and good economic benefits and social benefits are achieved.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme consisting of the equivalent replacement of the technical features. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.

Claims (2)

1. The double-parameter clam shell chart gauge of the folding type, characterized by, include: the drawing pen comprises a first parameter slide bar, an asymptote slide bar, an electrode positioning bar, a radial rotating bar, a second parameter slide frame and a branch drawing pen, wherein the asymptote slide bar is inserted at one end of the first parameter slide bar, the electrode positioning bar is connected to the first parameter slide bar in a sliding manner, one end of the radial rotating bar is connected to the electrode positioning bar in a rotating manner, a sliding block on the radial rotating bar is connected to the asymptote slide bar in a sliding manner, the second parameter slide frame is arranged on the radial rotating bar, the branch drawing pen is respectively arranged on the second parameter slide frame,

the pole positioning rod comprises a second round tube, a first round rod and a second handle, wherein a fourth pin, a first round ring disc, a second round ring disc, a third round tube and a third round ring disc are sequentially arranged at the middle lower part of the outer wall of the second round tube, inner circular holes of the first round ring disc, the second round ring disc and the third round ring disc are fixed on the second round tube, a third round tube is sleeved between the second round ring disc and the third round ring disc to form a shaft sleeve, a third groove is formed in the outer wall of the second round tube at the upper part of the fourth pin, movable second round rods are respectively arranged in the third groove, fixed fourth round ring discs are arranged at the inner ends of the two second round rods in the second round tube, a fixed first round rod is arranged in the inner circular hole of each fourth round ring disc, a fixed conical head is arranged at the lower end of the first round rod below the fourth round ring disc, and a spiral first spring is arranged outside the first round rod above the fourth round ring disc, the lower end of the first spring is fixed on the fourth circular ring disc, a fixed second handle is arranged at the upper end of the first spring, and the lower circular surface of the second handle is fixed at the upper end of the second circular tube.

2. The superimposed two-parameter mussel coil gauge according to claim 1, wherein: the first parameter slide bar is a rectangular slotted slide bar.

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