SU1567412A1

SU1567412A1 - Drawing instrument

Info

Publication number: SU1567412A1
Application number: SU884463018A
Authority: SU
Inventors: Евгений Михайлович Кирин; Владимир Павлович Зелов; Ирина Валентиновна Страченкова; Александр Васильевич Ганькин
Original assignee: Пензенский Политехнический Институт
Priority date: 1988-07-20
Filing date: 1988-07-20
Publication date: 1990-05-30

Abstract

Изобретение предназначено дл использовани преимущественно в чертежных приборах, которые служат дл вычерчивани нормали в заданных точках на кривой линии. Повышение удобства вычерчивани нормали прибором, у которого угольник, выполненный Т-образным с линейками, достигаетс тем, что угольник выполнен с V-образной гранью и с прорезью, расположенными по взаимно перпендикул рным пр мым лини м на линейках, и снабжен иглами и стрелкой - пластиной, установленными неподвижно на угольнике. Причем линейки можно фиксировать на кривой линии иглами и V-образной гранью и определ ть по стрелке-пластине и по прорези на линейках направление нормали в заданной точке на кривой линии. 3 ил.The invention is intended to be used primarily in drawing instruments that serve to plot the normal at given points on a curve. Improving the convenience of drawing a normal with a device in which a T-shaped square with rulers is achieved by the fact that the square is made with a V-shaped edge and with a slot located along mutually perpendicular straight lines on the rulers, and is equipped with needles and an arrow plate mounted motionless on the square. Moreover, the rulers can be fixed on a curve with needles and a V-shaped edge and determined along the arrow plate and along the slot in the rulers the direction of the normal at a given point on the curve of the line. 3 il.

Description

Изобретение относитс к чертежным приборам и предназначено дл использовани преимущественно в чертежных приборах, которые служат дл вычерчивани нормали в заданных точках на кривой линии.The invention relates to drawing instruments and is intended primarily for use in drawing instruments that serve to plot the normal at given points on a curved line.

Целью изобретени вл етс повышение удобства вычерчивани нормали в заданных точках на кривой линии.The aim of the invention is to improve the convenience of drawing a normal at given points on a curved line.

На фиг. 1 и 2 изображены две проекции j на фиг. 3 - схема работы.FIG. 1 and 2 show two projections j in FIG. 3 - scheme of work.

Чертежный прибор содержит угольник , который выполнен Т-образным с линейками 1 и 2.The drawing device contains a square that is made T-shaped with rulers 1 and 2.

При этом угольник выполнен с V-об- разной гранью 3 и с прорезью 4, которые расположены по взаимно перпендикул рным пр мым лини м на линейках 1 и 2, и снабжен иглами 5 и стрелкой- пластиной 6, которые установлены неподвижно на угольнике, а линейки 1In this case, the square is made with a V-shaped face 3 and with a slit 4, which are located along mutually perpendicular straight lines on rulers 1 and 2, and is equipped with needles 5 and an arrow-plate 6, which are fixed on the square, line 1

и 2 можно фиксировать на кривой линии иглами 5 и V-образной гранью 3 и определ ть по стрелке-пластине 6 и по прорези 4 на линейках 1 и 2 направлени нормали в заданной точке Л на кривойand 2 can be fixed on a curve with needles 5 and a V-shaped edge 3 and can be determined by arrow plate 6 and slot 4 on rulers 1 and 2 of the normal direction at a given point L on the curve

линии. lines.

Claims

During operation of the device, rulers 1 and 2 are fixed on a curved line with needles 5 and a V-shaped face 3 and, then, determined by arrow plate 6 and slot 4 on rulers 1 and 2, the normal direction at a given point A on a curved line ( as shown in Fig. 3). In addition, a normal is drawn with a pencil, moving it along slot 4, and the direction of the tangent is also determined along the edge of the square. Formula invented and-

. Drawing device containing a square, made T-shaped with rulers, characterized by

SP

oh

to

topics what,

315674

to increase convenience

drawing a normal at specified points on a curved line, the square is made with a V-shaped face and with a slot located along mutually perpendicular lines on the rulers, and is equipped with needles and an arrow plate, set 124

stationary on the square with the possibility of fixing the rulers on a curve with needles and a V-shaped edge and determining by the arrow plate and by the slot on the rulers of the normal direction at a given point on the n curve line.

Phia.1

Crooked

Fig.Z

Editor M. Bandura

Compiled by S.Yaoskalev

Tehred M.Hodanich Proofreader V.Girn to

Order 1292

Circulation 285

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., A / 5

FIG. 2

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