Marking tool

Abstract

The invention relates to a marking tool. The marking tool comprises a workpiece, wherein the outer round edge of the workpiece is provided with a locating plate; one end of the locating plate is provided with a V-shaped surface which is matched with and propped against the outer round edge of the workpiece; the upper part of the locating plate is provided with a clamp body; a marking plate penetrates through the middle part of the clamp body; the marking plate on the clamp body is locked on the locating plate through a fastener; and one end of the marking plate is provided with a marking needle. The marking tool disclosed by the invention is simple in structure, low in manufacturing cost, and convenient to install and operate; the locating plate is matched with the clamp body, so that the marking tool can mark accurately without aligning a centre point, thus overcoming the defect of the prior art that the centre point is difficult to be aligned for marking large workpieces; and the marking tool can mark a required centre circle based on the outer circle of the workpiece, so that the part of the workpiece to be machined can be conveniently determined, the workpiece can be accurately machined to form a finished product, the machining precision of the product can be ensured, the production efficiency can be improved, and cost can be lowered.

Description

technical field [0001] The invention relates to an auxiliary tool used in workpiece processing, in particular to a scribing tool used for circular workpieces. Background technique [0002] At present, in the actual machining process, scribing is an indispensable process in the process of each workpiece from blank to finished product. It is widely used in single-piece or small-batch production. No matter the size of the workpiece, it needs to be marked during the processing process. line, so as to facilitate the determination of the processing position of the workpiece, and the accuracy of the scribing will directly affect the processing quality of the workpiece. In actual production, it is often necessary to draw circular lines and straight lines on the workpiece. The center and radius of the circle, but for large workpieces, due to the limitation of the length of the planning plan, the planning plan cannot be drawn correctly; The middle part of the flange is hollow, and it...

AI Technical Summary

Problems solved by technology

[0002] At present, in the actual machining process, scribing is an indispensable process in the process of each workpiece from blank to finished product. It is widely used in single-piece or small-batch production. No matter the size of the workpiece, it needs to be marked during the processing process. line, so as to facilitate the determination of the processing position of the workpiece, and the accuracy of the scribing will directly affect the processing quality of the workpiece. In actual production, it is often necessary to draw circular lines and straight lines on the workpiece. The center and radius of the circle, but for large workpieces, due to the limitation of the length of the planning plan, the planning plan cannot be drawn correctly; The middle part of the flange is hollow, and its center point has been removed, so it is difficult to directly draw the center circle of the screw hole; in order to accurately draw the required center circle, it is necessary to fill in the hollow part, fill in the center point, and then use circle planning Out of the center circle, not only the work efficiency is low, the operation is troublesome, and the error of the center point is large; Delineate the center circle to be processed, which affects the processing of the next process of the workpiece

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