SU994143A2

SU994143A2 - Self-centring chuck

Info

Publication number: SU994143A2
Application number: SU731889632A
Authority: SU
Inventors: Михаил Романович Здановский
Original assignee: Московский автомеханический институт
Priority date: 1973-03-01
Filing date: 1973-03-01
Publication date: 1983-02-07

Description

(5) САМОЦЕНТРИРУтацИЙ ПАТРОН(5) SELF-CENTERING PATRON

1one

изобретение относитс к области станкостроени , в частности к патронам металлорежущих станков;The invention relates to the field of machine tools, in particular to machine tool chucks;

По основному авт. св. N 950502 известен самоцентрирущий патрон с механизированным приводом, выполненным в виде корпуса с равномерно расположенными По окружности попарно сгруппированными кулачками, синхронно перемещаемыми в радиальном направлении посредством уравнительного механизма.According to the main author. St. N 950502 is known for a self-centering cartridge with a mechanized drive made in the form of a housing with evenly arranged pairwise grouped cams synchronously moving in the radial direction by means of an equalizing mechanism.

Этот механизм выполнен в виде расположенного по биссектрисе угла между кулачками ползуна, несущего свободно поворотное зубчатое колесо кинематически св занное через подвижные рейки и зубуатые колеса с рейками , выполненными на основани х кулачков .This mechanism is made in the form of an angle located along the bisector between the cams of the slide carrying a freely rotating gear wheel kinematically connected through movable slats and gear wheels with slats made on the bases of the cams.

Кроме того, свободно поворотное зубчйтое колесо кинематически св зано с основанием кулачка промежуточным элементом, одна сторона которогоIn addition, a freely swiveling gear wheel is kinematically associated with the cam base by an intermediate element, one side of which

выполнена в виде рейки, а друга в виде зубчатого сектора.made in the form of a rail, and a friend in the form of a toothed sector.

Предложенный патрон совершенствует известный и отличаетс от негоThe proposed cartridge improves known and differs from it.

тем, что уравнительный механизм выполнен в виде расположенного по биссектриссе угла между кулачками ползуна, несущего поворотный двуплечий рычаг с радиусными головками на концах, the fact that the equalization mechanism is made in the form of an angle between the cams of a slider located along the bisector carrying a pivoting double-arm lever with radius heads at the ends,

fo взаимодействующий каждой головкой через подвижный вкладыш с пазом промежуточного звена, св занного в свою очередь, радиусной головкой с пазом кулачка посредством подвижного вкла15 дыша.fo interacting with each head through a movable liner with a groove in the intermediate link, connected in turn, with a radius head with a cam groove through the movable insert 15 breathing.

Така конструкци обеспечивает повышение износостойкости и прочности уравнительного механизма.Such a structure provides increased wear resistance and durability of the leveling mechanism.

На фиг. 1 показан уравнительныйFIG. 1 shows equalizing

20 механизм, вид в плане, на фиг. 2 - сечение АгА на фиг. 1.20 is a plan view of FIG. 2 is a section of AgA in FIG. one.

Claims

The cartridge consists of a body, in the evenly-spaced radial guides of which six cams 1 are installed. For example, the clamping element 2 mounted on the drive slider carries the freely pivoting lever 3; having radius heads and coupled to cam 1 via intermediate link and liners 5. Inserts 6 and cover 7 close the leveling mechanism. When moving the slider with the clamping element 2 to the center of the cartridge, the lever 3 rotates the links that move the cams from the center to secure the workpiece by the hole. The movable liners 5 protect the radius heads of the intermediate link lever as well as the grooves of this link and cam against wear. After the pair of cams come in contact with the surface of the fixed workpiece, the rotation of one of the intermediate links k npe-i grows and with further movement of the slide with element 2, the lever 3 will rotate only the relatively stationary link 4, moving the second cam until until he EE 4 comes into contact with the surface of the workpiece. In this way, the self-aligning of the cams of each pair and the self-centering of the preforms is carried out. When securing the blanks for the outer surface of the slide with the clamping element 2 and the cams move in the opposite direction. The invention Self-centering cartridge for ed. St. No. 950502, characterized in that, in order to increase the wear resistance and durability of the leveling mechanism, it is made in the form of a bisect angle between the slider cams carrying a swing arm with radial heads at the ends, which interact with each head through a movable liner with an intermediate slot the link, in turn, connected by a radius head with a cam groove by means of a movable insert.

Fug.

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