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Parabola definition demonstration and curve plotting instrument

A curve drawing and parabola technology, applied in the field of teaching instruments, can solve problems such as insufficient technical precision, and achieve the effects of accurate drawing, easy portability and high precision

Inactive Publication Date: 2020-01-24
NANJING VOCATIONAL UNIV OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This curve plotter can only be used for classroom teaching, and the technical precision is insufficient in engineering technology and industrial and agricultural production

Method used

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  • Parabola definition demonstration and curve plotting instrument
  • Parabola definition demonstration and curve plotting instrument
  • Parabola definition demonstration and curve plotting instrument

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Experimental program
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Embodiment Construction

[0023] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings to the present invention and embodiments.

[0024] Such as Figure 1-11 As shown, parabola definition demonstration and curve drawing instrument, including movable chassis 1, frame beam 2, backing plate 3, alignment slide plate 4, focus positioning tube 5, first spur rod 6, second spur rod 7, driving wheel 8, paintbrush 9, circle ruler 100, the backing plate 3 and alignment slide 4 are respectively placed in the middle of the movable chassis 1, the frame beam 2 is placed on the movable chassis 1, and the focus positioning tube 5 is placed on the frame On the beam 2, the first straight toothed rod 6 is placed on the alignment slide plate 4, the second straight toothed rod 7 is placed on the focus positioning tube 5, the driving wheel train 8 is connected with the first straight toothed rod 6 and The second spur rod 7 is meshed together, the pain...

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PUM

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Abstract

The invention discloses a parabola definition demonstration and curve plotting instrument. The parabola definition demonstration and curve plotting instrument can express the forming reason and the relationship between internal laws and various parameters intuitively through relative movement in mechanisms, draw the moving track of a moving point into an image directly, draw on a flat raw materialor a fixed plane, and be widely used as a tool for a long time. The instrument comprises a movable chassis, a frame beam, a backing plate, a directrix sliding plate, a focus positioning pipe, a firststraight tooth rod, a second straight tooth rod, a driving wheel system, a brush and a circle ruler; the device has simple operation, complete function, high drawing accuracy and strong applicability; all demonstrations and curve plotting can be performed as long as pushing and rotating a handle; the demonstration and track curve plotting of any parameter parabola can be finished; the structure is compact, the cost is low, the carrying is convenient; the instrument can demonstrate and draw at any angle in various occasions, is suitable for teaching, engineering design and processing fixed places, and is not only a teaching aid but also a common drawing tool.

Description

technical field [0001] The invention relates to a teaching instrument, in particular to a parabola definition demonstration and curve drawing instrument. Background technique [0002] Parabola is the most commonly used curve. Its composition and characteristics must be mastered by middle school students. It is widely used in practice, such as engineering design, mechanical processing, and clothing cutting. When middle school students learn, they start from the definition to study its characteristics step by step. They often rely on the teacher's freehand drawing or explanation on the wall chart. The hand-drawn curve is rough, and the parabola on the wall chart is static. The role of parameters, the definition and characteristics of parabolas are difficult to understand, and the parabolic rulers currently used by engineers and production workers are limited in the selection of parameters, the speed and accuracy of drawing, the degree of automation, and the use of occasions. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L11/00G09B25/00
CPCB43L11/00G09B25/00
Inventor 王书营
Owner NANJING VOCATIONAL UNIV OF IND TECH