SU768660A1 - Instrument for synthesis of sliding-crank mechanism - Google Patents

Description

one

The invention relates to drawing instruments and can be used to mechanize the process of synthesizing a spatial slider-crank mechanism.

A known device for the synthesis of a crank-slider mechanism, which contains a plate, a adjustable slide rail, three non-intersecting slats with longitudinal slits, the first of which, imitating a crank, is hinged on the tablet, and a third is fixed on the slider with the possibility of changing the angle of the paklon relative to the guide, and a writing device located at the intersection of the first and third bars I.

With the help of a known device it is impossible to perform the synthesis of a spatial crankshaft-slider mechanism.

In order to expand the range of tasks by enabling the synthesis of a spatial mechanism, the proposed device has carriages, a board hinged to them, with guides for carriages fixed on the tablet, and a swiveling guide installed on the board.

The drawing shows a General view of the device.

The device contains a tablet I, a adjustable guide 2 with a slider 3, three intersecting slats with longitudinal slits, a slider 4 ,. imitating curve 5 A pin hinged at point O is fixed on plate 1, a bar 5, imitating a connecting rod, is hingedly connected with bar 1 at point A and with a slider 3 at point B, bar 6 attached to a slider 3 with the possibility

10 changes the angle of inclination relative to the movable guide 2. The writing device 7 is located at the intersection of the strips 4 and 6. On the plate 1 there are fixed guides 8 for carriages 9, in which

15, the hinge is fixed to the board 10, wherein the adjustable guide 2 is mounted on the board 10. The hinge O is provided with a dial, and the adjustable guide 2 and the guide 8 with a linear scale.

20 When working on the device, set a predetermined angle between the tablet 1 and the board 2 and the required angle between the bar 6 and the guide 2. On the hinge dial O and the scale of the guide 2

25, install crank 4 and crawl 3 in a series of consecutive predetermined positions determined by synthesis tasks. Using the writing device 7, the points of the given synthesoids are marked. Next, insert the bar 5,

30 imitating the rod, and get a new

Synthesis - constructive. the lengths of the sections OA and AB, as well as the positions of the reversing guide 2 and the carriages 9, receive various structural syntheses, ending this process with a fairly good approximation of the constructive syntheses to the given one.

Claims (1)

Invention Formula A device for the synthesis of a crank-slider mechanism, which contains a plate, a reversible guide with a slider, three intersecting slats with longitudinal slits, the first of which, imitating the crank, is hinged on the plate, the second, imitating a connecting rod, pivotally connected to the first and the slider, and a third mounted on the slider with the possibility of changing the angle of inclination relative to the guide, and poor device, located on the intersection of the first and third bars, characterized in that it has a carriage, hinged to expand the range of tasks solved the board mounted on them, while on the tablet the guides for carriages are fixed, and the swiveling guide is mounted on the board. Sources of information taken into consideration in the examination 1. USSR Copyright Certificate № 318487, cl. In 43L 11/00, 1969 (prototype).