CN2310681Y

CN2310681Y - Hyperbolic curve gauge

Info

Publication number: CN2310681Y
Application number: CN 97248318
Authority: CN
Inventors: 杨振起
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-11-06
Filing date: 1997-11-06
Publication date: 1999-03-17
Anticipated expiration: 2007-11-06

Abstract

The utility model relates to a tool for specially drawing hyperbolic curves, comprising a fixed arm, a rocking arm, a diamond arm and a conversion arm. The fixed arm having a dead slot is in a flat-bar L shape, and the front end is provided with a fixed axle. The fixed axle having a locking bolt is installed in the dead slot, and is provided with length graduations. One end of the rocking arm having full-length slot is fixed on the fixed axis, and length graduations are arranged on the rocking arm. The conversion arm having a full-length dead slot is in a flat bar shape, and is arranged between two connecting axes. A sliding axis and a pen point are arranged at the connected position of the conversion arm and the rocking arm, and four prismatic frames have the function of connection. The utility model has the advantages of simple structure, low cost, easy use and convenient operation. The utility model is suitable for use by teachers and students.

Description

Hyperbolograph

The utility model belongs to a kind of teaching aid, especially a kind ofly can draw hyp hyperbolograph specially.

The present hyperbola of drawing is pulled with curve and is connected into curve by calculating described point, and its weak point is to calculate the described point drawing to compare more complicated.

The purpose of this utility model is to provide a kind of can draw the hyperbolograph of hyperbola figure directly, fast and accurately according to given focal length real axis and focal position.

The purpose of this utility model can realize by following measure:

It includes fixed arm, rocking arm, water chestnut arm, conversion arm the utility model, fixed axis, and the connecting axle of deciding bolt with lock is equipped with connecting axle, sliding axle and the nib of conversion arm.Press handle, rocking handle, bumper pad pilot pin.Fixed arm is L shaped flat bar, and minor face is following, and long limit is last, the minor face front end is equipped with fixed axis, and the bar shaped dead slot is left on the long limit of flat bar, with lockly decides bolt and is equipped with in the dead slot, initial from the fixed axis correspondence position, be carved with the length scale, rocking arm is a flat bar, the one end is fixed on the fixed axis, the other end is contained on the rocking arm, leaves the bar shaped dead slot on the rocking arm, and the connecting axle of deciding bolt with lock is contained in the dead slot, initial from fixed axis, be carved with the length scale; The water chestnut arm is that the circular hole of strip four ends is linked to be four water chestnut arms composition rhombus frameworks with connecting axle, the conversion arm is that flat bar is contained in that total length has dead slot between two connecting axles, sliding axle is installed in the dead slot of the intersection of conversion arm and rocking arm two arms and is fixed on nib under the axle.

The utility model is simple in structure, and is cheap, easy to operate, and high efficiency is fit to teacher, engineers and technicians, student's use.

Accompanying drawing is the utility model structural perspective.

Below in conjunction with accompanying drawing the utility model is further described:

As shown in drawings; Fixed arm 1 fell for flat the L shaped right side turn 90 degrees; Minor face is lower; Long limit is upper; The minor face front end upwards fills fixed axis 5; Flat bar is left the bar shaped dead slot on the long limit; The connecting axle 6 of locking bolt is slided in groove and be locked on arbitrary position; Self-retaining axle 5 correspondence positions are initial; Be carved with the length scale; The length of the latched position of connecting axle 6 namely represents focal length; Rocking arm 2 is contained on the fixed axis 5 for flat bar one end is porose; Hold rocking handle and rotate around fixed axis but the other end is equipped with rotating rocking handle 10 right hands; Rocking arm 2 is left the bar shaped dead slot; The connecting axle 6 of locking bolt is slided in groove and be locked on the position less than focal length; The self-retaining axle 5 initial length scales that are carved with; The length of the latched position of connecting axle 6 namely represents real axis length; Water chestnut arm 3 is made thinner strip; Only play connection function; Two ends are circular porose; With connecting axle 6; 7 connect four water chestnut arms forms the rhombus framework; It is flat bar that conversion arm 4 conversion arms are housed between two connecting axles 7; Total length has dead slot; Two connecting axles 7 are slided in groove; In the dead slot of conversion arm 4 and intersection two arms of rocking arm 2, sliding axle is installed and is fixed on nib 8 under the axle; Sliding axle 8 can slide in the groove of two arms; Fixed axis 5 connecting axles 6; 7 sliding axles 8 rotate or slip in clamping; Dress bumper pad 11 below fixed arm 1 minor face; The top dress press handle 9 of corresponding bumper pad; Left hand is held press handle 9 and is pressed down by bumper pad 11 and fixed arm 1 can be pressed solidly on drawing; The axle shelves have been done in two outsides of each arm; Upright position and flexibility with retainer shaft; The connecting axle 6 of locking bolt is machining screw on the axle beyond the axle shelves; In order to bolt connecting axle is locked on fixed arm 1 or the rocking arm 2; The connecting axle 6 of fixed axis 5 and locking bolt is in axle core hole; Pilot pin 12 be can insert with the accurate location of definite bifocal and focal length and the precise length of real axis on drawing appraised and decided; Machining screw and axle is split into two halves on the axle of sliding axle 8 axle shelves outer lower sides is used bolted again to penetrate pen core. The effective length of each arm (referring to remove the length of pushing position and rocking handle position) has certain proportionate relationship, because the hyperbola two ends infinitely prolong, can only draw a part of figure, the size of institute's drawing shape will be decided by focal radius, then the length of water chestnut arm 3 is not less than focal radius, conversion arm 4 length are not less than two times of water chestnut arm 3; Effective length of rocking arm 2 is not less than water chestnut arm 3 and adds maximum real axis length; The fixed arm effective length is not less than maximum focal length length; And notice that maximum real axis length is not more than maximum focal length length, can design the size of each arm according to this relation.When rotating rocking arm 2 when doing circular motion; Rocking arm 2 affects the rhombus framework constantly to be out of shape and makes 4 displacements of conversion arm; Sliding axle 8 is promoted by rocking arm 2 and conversion arm 4 simultaneously; Make below nib 8 draw hyperbola; At this moment fixed axis 5 and the position that is locked in the rhombus framework connecting axle 7 on the fixed arm 1 are hyp two focuses; The length between them is focal length; Fixed axis 5 and the length that is locked between the rhombus framework connecting axle 7 on the rocking arm are the length of hyperbola real axis; Hyperbolograph is transferred turnback; Make bifocal to change place; Use with quadrat method and can draw hyp half in addition; Can be according to given focal length; Real axis and focal position, and is direct; As to draw the hyperbola figure fast and accurately.

Claims

1, a kind of hyperbolograph, it includes fixed arm, rocking arm, water chestnut arm, conversion arm, fixed axis, the connecting axle of deciding bolt with lock is equipped with connecting axle, sliding axle and the nib of conversion arm.Press handle, rocking handle, bumper pad pilot pin.It is characterized in that:

A, fixed arm are L shaped flat bar, and minor face is down, and long limit is last, and the minor face front end is equipped with fixed axis, and the bar shaped dead slot is left on the long limit of flat bar, with lockly decide bolt and are equipped with in the dead slot, from the initial length scale that is carved with of fixed axis correspondence position;

B, rocking arm are that flat bar one end is fixed on the fixed axis, and the other end is contained on the rocking arm, leaves the bar shaped dead slot on the rocking arm, and the connecting axle of deciding bolt with lock is contained in the dead slot, from the initial length scale that is carved with of fixed axis;

C, water chestnut arm are that the circular hole of strip four ends is linked to be four water chestnut arms composition rhombus frameworks with connecting axle;

D, conversion arm are that flat bar is contained between two connecting axles to bore and has dead slot, installation sliding axle and be fixed on nib under the axle in the dead slot of the intersection of conversion arm and rocking arm two arms.

2, a kind of hyperbolograph according to claim 1 is characterized in that adorning bumper pad below the fixed arm minor face, the top dress press handle of corresponding bumper pad.

3, a kind of hyperbolograph according to claim 1 is characterized in that two outsides of each arm are provided with the axle shelves, connecting axle machining screw on axle shelves axle in addition of deciding bolt with lock.

4, a kind of hyperbolograph according to claim 1 is characterized in that fixed axis and the connecting axle of deciding bolt with lock insert pilot pin in axle core hole.

5, a kind of hyperbolograph according to claim 1 is characterized in that the axle of the outer below of sliding axle axle shelves is gone up machining screw, is split into insertion nib bolted in the axle core hole of two halves.