Line drawing instrument for metal sheets

Abstract

The invention discloses a line drawing instrument for metal sheets, and relates to the field of machining, particularly to a line drawing instrument for flat plates. The line drawing instrument for the metal sheets is characterized by comprising a pair of locating clamping seats, a screw rod group mounted between the pair of locating clamping seats, a scale ruler mounted between the pair of locating clamping seats, a support body matched with the scale ruler, and a middle line drawing needle and an ordinary line drawing mechanism which are mounted on the support body, wherein the screw rod group comprises a left rotary screw rod and a right rotary screw rod. According to the line drawing instrument, middle lines of the to-be-machined sheets can be automatically located through synchronously moving the locating clamping seats, the ordinary line drawing mechanism is moved to draw straight lines in all positions, only one-time locating is required, the problem that a conventional line drawing instrument is low in line drawing efficiency and low in precision is solved, and middle line locating, ordinary straight line drawing, centering, and the like can be integrated.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a flat-panel line drawing instrument. Background technique [0002] The height ruler is the most commonly used plane line drawing device in the machinery industry. It can draw the positioning line of the position to be processed more accurately, and is easy to use. However, there are many shortcomings and disadvantages. For example, when the height of the drawn line reaches a certain height (less than half of the scale), the drawn line will be unstable due to the high force point, resulting in skewed lines and shallow traces. When a board needs to be punched, and it is symmetrical with the center line as the benchmark, or it is punched in the center of the board, etc., when drawing a line with a common height ruler, it is necessary to measure its height first, and then calculate its center position, because the board There is a large error in blanking, so it is often necessa...

AI Technical Summary

Problems solved by technology

However, there are many shortcomings and disadvantages. For example, when the height of the drawn line reaches a certain height (less than half of the scale), the drawn line will be unstable due to the high stress point, resulting in skewed lines and shallow traces.

When a board needs to be punched, and it is symmetrical with the center line as the reference, or it is punched in the center of the board, etc., when drawing a line with an ordinary height ruler, it is necessary to measure its height first, and then calculate its center position, because the board There is a large error in blanking, so it is often necessary to draw two center lines based on each side, and then set the punching position in the middle of the two drawn lines. The operation is very complicated and inconvenient and contains estimated values, so there is a large error

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