SU84166A1 - Affiliate Projection Tool - Google Patents

Description

A device is proposed for drawing affine flat and three-dimensional figures along their orthogonal projections made 3 in the form of two relocatable sliders and a moving rod with a writing tip.

In the existing ribbons of this Tiina with a dzhechipip dvukh rod, there is a sliding friction, which creates known difficulties when mounting the rod to work with these devices.

In the instrument, this disadvantage is eliminated by the fact that the sliding rod of the device is mounted on a carriage that moves across the plane of one of the FROM plates using hinged parallelograms with the possibility of its installation at a given angle to the tablet.

In FIG. 1 shows a diagram of a general view of an irbord; in fig. 2 - fitting the device to the oblique isometric installation, side view; in fig. 3 - the same, when installed on a rectangular isometry; in fig. 4 is the same, partially in section, a sliding rod, side view; in fig. 5-rod front view.

The device makes it possible to obtain affine projections of plane figures, as well as three-dimensional forms of objects depicted on the software plane by a given orthogonal plane.

In order to obtain, using the existing orthogonal projections, the required affine or axonometric projection, it is sufficient to establish two given angles in the horizontal and vertical planes. After that, the device automatically, by moving the circumferential pin along the contours of orthogonal projections across the horizontal plane, gives the desired image on the vertical or inclined affinity plane. For a graphic image of volumetric forms, the initial position of the horizontal plane changes in vertical grading, the value of the difference in height of the location of the corresponding horizontal surfaces of the depicted object.

The device consists of a horizontal carriage 2, fixed by two hinges and a conventional translator /, providing parallel

No. 84166- 2 projectile Tie: pcMeuiciu-ie; all the system. J-ia krettx 2 has a rigidly fixed horizontal limb 3 and a rotating vertical pole 4 of varying height is installed. A path in the rachette of this stand around one's own link is installed at the head station / 1y; th lp-mbu and then fixed to him: the tombs yiOJi.

To the stand of charmyry, nrikrei. We shall have a telescopic rod 6 of leremeshiyu length, with zakrenlenny | .m on "his vertical limb 5, and to which it is established and then () strap). The core is shown by the fS image: m on the related plane, the required affine center axonometric T1erocii by 11emen1epp o5vodlogs nggifta 7 but the contour of the orthogon / ny projections on the horizon.no: (1NLS-speed.

When installing a rod at a given angle to the lining of the device, it can, besides affine ones, also axonometric-nroekinzin of various flat and volumetric shapes.

To do this, the parallelism of the paralism should coincide with the projection of the diagon.ti cube, and the upper limb f eo6 should be given the following value depending on the xapaKTejia Projection:

Rectangular isometric but GOST - 35 ° 16 (Fig. 3).

Oblique azometry - 45 ° 0 (Fig. 2).

I) e d eme and z o b) c e and n

 for drawing the adhoin projections of nlooches and obtornous figures but their orthogonal arrays; made by IB in the form of two discontinuous plates and a sliding rod with a meager edge, characterized in that it draws affine or axnometric projections of a rod and draws it from a drawing rod. , non-mixing no-plane one nz nla1ishetov help shchNIrnyh nara, lelog) almov with the possibility of gstatyug / kn of it At a given angle to the nlanset

FIG.