CN201760717U

CN201760717U - Curved-surface compasses

Info

Publication number: CN201760717U
Application number: CN2010202728006U
Authority: CN
Inventors: 周玉珍; 高海滨; 高海荣; 郭世栋; 周玉萍
Original assignee: 周玉珍
Priority date: 2010-07-24
Filing date: 2010-07-24
Publication date: 2011-03-16
Anticipated expiration: 2020-07-24

Abstract

The utility model provides curved-surface compasses, which can draw a circle (intersecting lines) on the material with a convex surface, a concave surface or an irregular curved surface. In the curved-surface compasses, a handle is arranged at the upper end of a fixed support foot; one end of a planar link rod with a sliding groove is arranged at the upper part of the fixed support foot by a locking bolt; the upper end of a rotary support foot is screwed on the sliding groove of the planar link rod by a second locking bolt; the rotary support foot is internally provided with a sliding sleeve with a spring; a drawing leg is sleeved in the sliding sleeve of the rotary support foot; the lower end of the spring is clamped tightly on a bump arranged at the upper end of the drawing leg; a pen clip used for fixing a drawing pen is screwed at the lower end of the drawing leg; the fixed support foot is internally provided with a second sliding sleeve with a second spring; a support leg is sleeved in the second sliding sleeve of the fixed support foot; and the lower end of the second spring is clamped tightly on a second bump arranged at the upper end of the support leg. The curved-surface compasses adopting the technical scheme can draw the intersecting lines on the convex surface, the concave surface or the irregular curved surface accurately, thereby saving the time and the labor and lowering the production cost; and the curved-surface compasses can be folded so as to be convenient for carrying.

Description

Camber compasses

Technical field

The utility model relates to a kind of drawing tools, particularly a kind of compasses at convex surface, concave surface or irregular curved surface material upper drawing circle (intersection).

Background technology

Be the welding tube type material in the petroleum machinery processing industry, need on the convex surface of being everlasting, concave surface or irregular curved surface material, draw intersection, general way is to replace at the material upper drawing circle with common compasses now, can only satisfy pipe like this and draw less demanding intersection on the curved surface of little radian; Along with the radian of getting intersection material surface increases, error is increasing, gets the intersection of pipe on convex surface, concave surface or irregular curved surface material for accurately drawing, and during with common compasses, needs repeatedly to proofread and correct, and is so not only time-consuming but also require great effort.In the tubing welding, the error existence because of the intersection on convex surface, concave surface or the irregular curved surface causes welding difficulty, waste material.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of Camber compasses is provided, and can accurately draw intersection on convex surface, concave surface or irregular curved surface material, save time, laborsaving, reduce production costs.

The utility model is to realize like this, Camber compasses, it comprises handle, fixed feet, the rotation leg, the fixed feet upper end is equipped with handle, planar linkage one end that has sliding tray is installed in fixed feet top by clamping screw, rotation leg upper end is screwedly mounted on the sliding tray of planar linkage by second clamping screw, in the rotation leg sliding sleeve that has spring is installed, drawing leg is sleeved in the sliding sleeve that rotates leg, the lower end of spring is clamped on the thrust of picture leg upper end, draw the pen card that the leg lower end is screwed to fix paintbrush, second sliding sleeve that has second spring is installed in the fixed feet, supporting leg is sleeved in second sliding sleeve of fixed feet, and the lower end of second spring is clamped on second thrust of supporting leg upper end.

Compared with prior art, Camber compasses advantage of the present utility model is, and is simple in structure, because design has the planar linkage of band sliding tray, can realize fixed feet and rotate leg remaining parallel; Fixed feet designs the sliding sleeve that the band spring is arranged respectively with rotating in the leg, supporting leg and picture leg can freely stretch, and can guarantee that paintbrush well contacts with convex surface, concave surface or irregular curved surface, thereby guarantee that drawn circle or intersection are accurately continuous.Because the plane connects the village and fixed feet, rotation leg are installed with clamping screw, can fold, and is easy to carry.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

The 1-handle, 2-clamping screw, 3-planar linkage, 4-sliding tray, 5-second clamping screw, 6-sliding sleeve, the 7-spring, 8-rotates leg, the 9-thrust, 10-draws leg, 11-pen card, the 12-supporting leg, 13-second thrust, 14-fixed feet, 15-second spring, 16-second sliding sleeve.

The specific embodiment

Below in conjunction with accompanying drawing concrete structure of the present utility model and principle are described further.

As shown in the figure, Camber compasses of the present utility model, it comprises handle 1, fixed feet 14, rotation leg 8, fixed feet 14 upper ends are equipped with handle 1, planar linkage 3 one ends that have sliding tray 4 are installed in fixed feet 14 tops by clamping screw 2, rotation leg 8 upper ends are screwedly mounted on the sliding tray 4 of planar linkage 3 by second clamping screw 5, in the rotation leg 8 sliding sleeve 6 that has spring 7 is installed, drawing leg 10 is sleeved in the sliding sleeve 6 that rotates leg 8, the lower end of spring 7 is clamped on the thrust 9 of picture leg 10 upper ends, draw the pen card 11 that leg 10 lower ends are screwed to fix paintbrush, second sliding sleeve 16 that has second spring 15 is installed in the fixed feet 14, supporting leg 12 is sleeved in second sliding sleeve 16 of fixed feet 14, and the lower end of second spring 15 is clamped on second thrust 13 of supporting leg 12 upper ends.

When using Camber compasses of the present utility model, regulate planar linkage 3 and form suitable angle and fixing with clamping screw 2 with fixed feet 14; Rotate leg 8 in the position of sliding tray 4 according to the radius size adjustment of drawn circle (intersection), make rotation leg 8 and fixed feet 14 keeping parallelisms relation, and tighten fixing with second clamping screw 5; Setting-out materials such as chalk are installed on the pen card 11, are the center of circle with the lower end of supporting leg 12, with hand steered steady handle 1, twist rotation leg 8, can draw in the plane justify, the intersection of the pipe that on convex surface, concave surface or irregular curved surface, draws.

When the intersection of convex surface, concave surface or irregular curved surface upper drawing circle pipe, because the center of circle and circle (intersection) are not in same plane, when being on the convex surface, the center of circle just compresses supporting leg 12 to shorten fixed feet 14 length, when being on the concave surface, the center of circle then compresses picture leg 10 to shorten rotation leg 8 length, the fixed feet 14 that can stretch makes paintbrush keep good the contact constantly with convex surface, concave surface or irregular curved surface with rotation leg 8, remains parallel and then has guaranteed the accuracy of drawn intersection owing to rotate leg 8 and fixed feet 14 in the setting-out process.Evidence: 10 people cut circle on the circular arcs of 60 degree, and the error qualification rate rises to original 96.8% by 70%, prove this Camber compasses, and is simple in structure, convenient to use, and the material-saving that saves time can fold and is easy to carry.Camber compasses can adopt Fine Steel Casting iron, and after heat treatment, mechanical property is better.

Claims

1. Camber compasses, it comprises handle, fixed feet, the rotation leg, the fixed feet upper end is equipped with handle, it is characterized in that, planar linkage one end that has sliding tray is installed in fixed feet top by clamping screw, rotation leg upper end is screwedly mounted on the sliding tray of planar linkage by second clamping screw, in the rotation leg sliding sleeve that has spring is installed, drawing leg is sleeved in the sliding sleeve that rotates leg, the lower end of spring is clamped on the thrust of picture leg upper end, draw the pen card that the leg lower end is screwed to fix paintbrush, second sliding sleeve that has second spring is installed in the fixed feet, supporting leg is sleeved in second sliding sleeve of fixed feet, and the lower end of second spring is clamped on second thrust of supporting leg upper end.