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Multifunctional radius-adjustable compasses with scales

A multi-function, scale technology, applied in circular curve plotters, printing, writing utensils, etc., can solve the problems of unable to meet the needs of engineering, single function of compasses, inconvenient radius adjustment, etc., to achieve a wide range of applications, accurate adjustment , the effect of easy adjustment of the radius

Inactive Publication Date: 2014-12-10
HOHAI UNIV CHANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] It is inconvenient to adjust the radius of the existing compasses on the market at present, and it cannot be adjusted more accurately. In actual engineering, sometimes it is necessary to draw arcs on harder metals, sheet metal parts or glass, etc., or even press the Cutting with a certain radius, the existing compass on the market has a single function and cannot meet the needs of actual engineering

Method used

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  • Multifunctional radius-adjustable compasses with scales
  • Multifunctional radius-adjustable compasses with scales
  • Multifunctional radius-adjustable compasses with scales

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Embodiment Construction

[0015] In order to further explain the technical means and functions adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structures, features and functions proposed according to the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0016] Such as figure 1 As shown, a multi-functional adjustable diameter band scale compass includes a first scale positioning bolt 1, a second scale positioning bolt 11, a pen 2, a pen holder 3, a radius rod 4, a fixed tube 7, and a center pin 8; 2 is connected with the radius rod 4 through the pen holder 3 and the first scale positioning bolt 1; the center fixing needle 8 is connected with the radius rod 4 through the fixing tube 7, and the second scale positioning bolt 11 is also arranged on the fixing tube 7.

[0017] Such as figure 2 As shown, the upper side of the radius rod 4 is a plane with a length scale...

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PUM

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Abstract

The invention relates to multifunctional radius-adjustable compasses with scales. The multifunctional radius-adjustable compasses with the scales are characterized by comprising a first scale positioning bolt, a second scale positioning bolt, a pen, a pen holder, a radius rod, a fixing tube and a circle center fixing needle, wherein the pen is connected with the radius rod through the pen holder and the first scale positioning bolt; the circle center fixing needle is connected with the radius rod through a fixing tube; and the fixing tube is also provided with the second scale positioning bolt. The circle center fixing needle can move along the radius rod with length scale values, so that the radius can be accurately adjusted; circles and arcs can be conveniently scratched on surfaces of parts made of different materials; and the parts can be trimmed along the circles or the arcs.

Description

technical field [0001] The invention discloses a multi-function adjustable compass with scale, which belongs to the field of stationery design. Background technique [0002] It is inconvenient to adjust the radius of the existing compasses on the market at present, and it cannot be adjusted more accurately. In actual engineering, sometimes it is necessary to draw arcs on harder metals, sheet metal parts or glass, etc., or even press the Cutting with a certain radius, the existing compasses on the market have a single function and cannot meet the needs of actual engineering. Contents of the invention [0003] Aiming at some shortcomings of the above-mentioned products, the present invention can move the fixed needle at the center of the circle along the radius rod with a length scale value to realize a more precise adjustment of the radius, and at the same time replace pens with different refills, which can be easily realized on parts with different materials. The surface ...

Claims

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Application Information

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IPC IPC(8): B43L9/02
Inventor 康兰
Owner HOHAI UNIV CHANGZHOU
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