CN203046631U

CN203046631U - Engineering compass

Info

Publication number: CN203046631U
Application number: CN 201320022375
Authority: CN
Inventors: 林春元
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-16
Filing date: 2013-01-16
Publication date: 2013-07-10
Anticipated expiration: 2023-01-16

Abstract

The utility model relates to an engineering compass which is composed of a radius ruler, a fixed pin component and a scriber component, a starting end of the radius ruler and a scriber main unit of the scriber component are fixed, the other end of the radius ruler is inserted into a fixed pin main unit of the fixed pin component and slides in the fixed pin main unit, and length scales are carved on the radius ruler. The fixed pin component is composed of a fixed pin handle, the fixed pin main unit, a radius ruler adjusting bolt, a fixed pin auxiliary part, a fixed pin or an angle-adjustable fixed pin component, and the scriber component is composed of a scriber main unit, a scriber fixed bolt, a sliding scriber or a punctiform laser source. Numerical values of circle radiuses or ellipse short radiuses can be adjusted conveniently and intuitively, swing phenomenon caused by rotation of a scribing arm is overcome well, and direct or indirect scribing of different center point positions is achieved. By adoption of the fixed pin and a fixed pin angular adjusting part, the different center point positions can be achieved. By adoption of the scriber and the punctiform laser source, the direct or indirect scribing can be achieved. The angle-adjustable fixed pin component is adopted to adjust angle values, and ellipse lines of different sizes can be scribed very conveniently.

Description

A kind of engineering compasses

Technical field

The utility model relates to a kind of for the engineering compasses of drawing circle or elliptical path line at arbitrary face.

Background technology

In machine industry, often need in advance on the plane, the scope of operations such as irregular, pipeline, tank body mark circle and oval-shaped trajectory.What common body surface in circles such as pipeline, tank bodies was drawn circle or the employing of elliptical orbit line at present is engineers and technicians' setting-outs on cardboard or asphalt felt earlier, through complicated calculating, retouch out trajectory at model, cut model along trajectory, be attached to then on the object that needs line, depict trajectory again along the edge of model, the trajectory that this method marks is difficult to guarantee accuracy, activity duration is longer, and needs the some of the staff's ability operation through professional training or study.Draw the general herringbone compasses that adopt of circle in the plane, these compasses can only be drawn circle in the plane, and the scope of application is narrow.It is complicated to draw at present oval instrument in the plane, complex operation, and the scope of application is narrow.At present, also there are not apparatus and method preferably at irregular stroke of circle or elliptical path line.

Summary of the invention

The purpose of this utility model is to overcome existing compasses or single, the unhandy defective of ellipsograph use, provide a kind of simple to operate in the workplace, easy to use, the scope of application is wide, on the plane, the scope of operations such as irregular, pipeline, tank body draw the compasses of circle and elliptical path line.

The technical scheme that its technical problem that solves the utility model adopts is: the engineering compasses are by the radius chi, deciding needle assemblies and scriber assembly forms, the scriber main part of radius chi initiating terminal and scriber assembly is fixed, the radius chi other end inserts the slip in the pin main part of deciding of deciding needle assemblies, be carved with the length scale on the radius chi, decide needle assemblies by deciding the pin handle, decide the pin main part, the radius chi is adjusted bolt, decide the pin auxiliary member, decide pin or angle adjustable and decide the needle assemblies composition, decide the pin handle and decide the pin main part and be connected with shaft shoulder bolt, decide the pin main part and decide the pin auxiliary member and be connected with shaft shoulder bolt, decide pin or decide pin angle adjustable assembly and decide the pin auxiliary member and be connected; The scriber assembly is made up of scriber main part, scriber set bolt, slidingtype scriber or point-like laser source, the slidingtype scriber is free to slide in the scriber main part or fixes with the scriber set bolt, slidingtype scriber and point-like laser source are interchangeable, when using the point-like laser source, the point-like laser source is contained in the scriber main part, and fixes with the scriber set bolt.

Decide needle assemblies axis, scriber assembly axis and radius chi axis normal, it is parallel with scriber assembly axis to decide the needle assemblies axis.To take half of length definite according to decide pin main part and scriber main part for the starting point of the scale on the radius chi.Angle adjustable is decided needle assemblies and is formed by deciding pin angle adjustment part, bevel protractor, angle adjustment bolt and decide punch block, and bevel protractor decides to use between pin angle adjustment part and bevel protractor the angle adjustment bolting with to decide the punch block face vertical.

Engineering compasses of the present utility model are adjusted radius chi respective radius numerical value according to drawing circle or oval radius distance value, and fixedly the scriber arm is rotated in the center of circle, just can be conveniently, mark corresponding trajectory at arbitrary face accurately.

The beneficial effects of the utility model are: utilize the radius chi and decide slip between the needle assemblies and fixing, can easily adjust the numerical value of radius of circle or oval short radius intuitively.Utilize shaft shoulder bolt to connect handle and decide the pin main part, decide the pin main part and decide the pin auxiliary member, when drawing round or ellipse, the arm pull of rotation and handle and decide freely to rotate between pin have well overcome the dancing that rotates generation because of arm pull.Utilize and decide pin and decide pin angle adjustment part, can realize the purposes of different centre points position.Utilize scriber and point-like laser source, can realize the directly or indirectly purposes of line.Utilize angle adjustable to decide needle assemblies and adjust angle value, equal radius length than the relation of sinA according to the long limit of ellipse, can mark the ellipse of different size very easily.

Description of drawings

Fig. 1 is engineering compasses structural representation of the present utility model.

Fig. 2 is that engineering compasses of the present utility model are decided the needle assemblies structural representation.

Fig. 3 is engineering compasses scriber modular construction schematic diagram of the present utility model.

Fig. 4 is that engineering compasses angle adjustable of the present utility model is decided the needle assemblies structural representation.

Fig. 5 is that the ellipse schematic diagram is drawn in the utility model simulation.

Among the figure, 1-decides needle assemblies, 2-radius chi, 3-scriber assembly, 4-decides the pin handle, and 5-radius chi is adjusted bolt, 6-decides the pin main part, and 7-decides the pin auxiliary member, and 8-decides pin, the 9-angle adjustable is decided needle assemblies, 10-scriber main part, 11-scriber set bolt, 12-slidingtype scriber, 13-point-like laser source, 14-decides pin angle adjustment part, the 15-bevel protractor, 16-angle adjustment bolt, 17-decides punch block.

The specific embodiment

As shown in Figure 1, the engineering compasses are by deciding needle assemblies 1, radius chi 2 and scriber assembly 3 are formed, the scriber main part 10 of radius chi 2 initiating terminals and scriber assembly 3 is fixing, radius chi 2 axis are vertical with scriber main part 10 round hole axial, deciding in pin main part 6 sliding trays of needle assemblies 1 decided in the insertion of radius chi 2 other ends, radius chi 2 axis are with to decide pin main part 6 sliding tray vertical lines vertical, be carved with the length scale on the radius chi 2, the starting point of scale according to decide pin main part 6 and scriber main part 10 to take half of length definite, read the radius distance value that needs at the edge, the right of deciding pin main part 6, radius chi 2 with decide pin main part 6 usefulness radius chis adjustment bolt 5 and fix.Decide needle assemblies axis, scriber assembly axis and radius chi axis normal, it is parallel with scriber assembly axis to decide the needle assemblies axis.

Deciding needle assemblies 1 adjusts bolt 5, decides pin main part 6, decides pin auxiliary member 7, decides pin 8 or angle adjustable and decide needle assemblies 9 and form by deciding pin handle 4, radius chi, decide pin handle 4 and decide pin main part 6 and adopt shaft shoulder bolts to be connected, can rotate relatively freely, decide pin main part 6 and decide pin auxiliary member 7 and adopt shaft shoulder bolts to be connected, can rotate relatively freely, decide pin 8 or decide pin angle adjustable assembly 9 and decide pin auxiliary member 7 and adopt internal and external threads to be connected.

Scriber assembly 3 is made up of scriber main part 10, scriber set bolt 11, slidingtype scriber 12 or point-like laser source 13, slidingtype scriber 12 can be free to slide in scriber main part 10, also available scriber set bolt 11 is fixed, when using point-like laser source 13, point-like laser source 13 is contained in the scriber main part 10, and is fixing with scriber set bolt 11.

Angle adjustable is decided needle assemblies 9 by deciding pin angle adjustment part 14, bevel protractor 15, angle adjustment bolt 16 and decide punch block 17 and form, and bevel protractor 15 is with to decide 17 of punch blocks vertical, decides 15 of pin angle adjustment part 14 and bevel protractors and fixes with angle adjustment bolt 16.

Claims

1. engineering compasses, it is characterized in that the engineering compasses are by the radius chi, deciding needle assemblies and scriber assembly forms, the scriber main part of radius chi initiating terminal and scriber assembly is fixed, the radius chi other end inserts the slip in the pin main part of deciding of deciding needle assemblies, be carved with the length scale on the radius chi, decide needle assemblies by deciding the pin handle, decide the pin main part, the radius chi is adjusted bolt, decide the pin auxiliary member, decide pin or angle adjustable and decide the needle assemblies composition, decide the pin handle and decide the pin main part and be connected with shaft shoulder bolt, decide the pin main part and decide the pin auxiliary member and be connected with shaft shoulder bolt, decide pin or decide pin angle adjustable assembly and decide the pin auxiliary member and be connected; The scriber assembly is made up of scriber main part, scriber set bolt, slidingtype scriber or point-like laser source, the slidingtype scriber is free to slide in the scriber main part or fixes with the scriber set bolt, slidingtype scriber and point-like laser source are interchangeable, when using the point-like laser source, the point-like laser source is contained in the scriber main part, and fixes with the scriber set bolt.

2. engineering compasses according to claim 1 is characterized in that deciding needle assemblies axis, scriber assembly axis and radius chi axis normal, and it is parallel with scriber assembly axis to decide the needle assemblies axis.

3. engineering compasses according to claim 1, to take half of length definite according to decide pin main part and scriber main part for the starting point that it is characterized in that the scale on the radius chi.

4. engineering compasses according to claim 1, it is characterized in that angle adjustable decides needle assemblies and form by deciding pin angle adjustment part, bevel protractor, angle adjustment bolt and decide punch block, bevel protractor decides to use between pin angle adjustment part and bevel protractor the angle adjustment bolting with to decide the punch block face vertical.