Tool for drawing large-scale circle

A large, circle technology, applied in the field of drawing large circle tools, can solve the problem of low accuracy

Active Publication Date: 2013-05-22
蚌埠格识知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As is known, when drawing a circle on a stone surface or a metal plate, small ones can be realized by using a scribe gauge, also known as a planning plan, but when a circle exceeds 20 cm or even a few meters, only a positioning pin in the middle can be used. The line drives the scribe needle on the periphery of the circle to draw the line. The

Method used

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  • Tool for drawing large-scale circle
  • Tool for drawing large-scale circle

Examples

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Example Embodiment

[0017] The present invention can be explained in more detail through the following examples, and the purpose of disclosing the present invention is to protect all changes and improvements within the scope of the present invention, and the present invention is not limited to the following examples;

[0018] combined with figure 1 Or the large circle drawing tool described in 2, including a vertical rod 2, a handle 1, a positioning needle 14, a lock sleeve 15, an adjustment rod seat 13, a spring seat 18, a length adjustment rod 8, a slider 10, a needle 12, anti-slack The plate 3, the spring 25 and the screw 4 are provided with a handle 1 and a positioning needle 14 on the upper and lower ends of the vertical rod 2 respectively. The rod 22 and the vertical rod 2 form a "T"-shaped structure. A plurality of height adjustment holes 21 are provided at intervals at the lower part of the vertical rod 2. The locking nut 16 is connected to any height adjustment hole 21 through the lock s...

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PUM

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Abstract

The invention discloses a tool for drawing a large-scale circle and relates to a circle tool. A handle (1) and a locating pin (14) are respectively arranged at two ends of a vertical pole (2), wherein a lock sleeve (15) is fixed at the lower portion of the vertical pole through a locknut (16), and an adjusting rod seat (13) at one side of the locking sleeve is hinged at one end of a length adjustment lever (8) through a shaft (6). The lower ends of spring seats (18) are fixed on the adjusting rod seat of the lock sleeve through a pin roll (17). A rotating piece (19) is connected between the upper portion of the spring seats through a rotating shaft (20), the upper portion surface, close to one end, of the length adjustment lever is connected with the lower end of an anti-loose plate (3), a screw (4) is connected with a screw hole (23) in the rotating piece penetrating through the anti-loose plate and a spring (25), and a scratch awl (12) is arranged at the lower portion of a slide block (10) sleeved on the length adjustment lever. The locating pin is placed at the center of a circle by the handle pressing, the scratch awl is corresponding to the circle, and the normative circle is drawn at a flat surface or a non-flat surface by a spring.

Description

【Technical field】 [0001] The invention relates to a circle tool, in particular to a tool for drawing large circles. 【Background technique】 [0002] As is known, when drawing a circle on a stone surface or a metal plate, small ones can be realized by using a scribe gauge, also known as a planning plan, but when a circle exceeds 20 cm or even a few meters, only a positioning pin in the middle can be used. The line drives the scribe needle on the periphery of the circle to draw the line. The accuracy of this method is low, and the error of the drawn circle sometimes exceeds a few centimeters. Therefore, some workers have come up with the idea of ​​using a ruler to draw multiple points. "method", and then use lines to connect, the circle drawn in this way is not very round, and there is no line drawing tool for large circles on the market. 【Content of invention】 [0003] In order to overcome the deficiencies in the background technology, the present invention discloses a tool...

Claims

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Application Information

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IPC IPC(8): B25H7/04
Inventor 李香秀
Owner 蚌埠格识知识产权运营有限公司
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