SU626893A1

SU626893A1 - Bar supporting device

Info

Publication number: SU626893A1
Application number: SU762394901A
Authority: SU
Inventors: Юрий Николаевич Кузнецов; Владимир Витальевич Торба
Priority date: 1976-08-09
Filing date: 1976-08-09
Publication date: 1978-10-05

Description

1one

Изобретение относитс к станкостроению и может быть использовано дл поддержки прутка-заготовки, например, в автоматах токарного типа.The invention relates to a machine tool industry and can be used to support bar-stock, for example, in automatic lathes.

Известно устройство дл поддержки прутка , содержащее неподвижный корпус, внутри которого равномерно по окружности размещены касающиес прутка жесткие рычаги, поворачиваемые вокруг укрепленных в корпусе осей, и сопр женную с корпусом поворотную обойму |1.A device for supporting a rod is known, which comprises a stationary case, inside which rigid levers, touching the rod, are uniformly circumferentially rotated around the axes fixed in the case, and a rotatable yoke | 1 which is associated with the case.

Недостатком известного устройства вл етс возможность перекоса поддерживаемого прутка.A disadvantage of the known device is the ability to skew the supported bar.

Предложенное устройство обеспечивает высокую точность центрировани прутка.The proposed device provides high precision centering of the rod.

С этой целью оси поворота рычагов расположены параллельно оси вращени прутка а на обойме с возможностью поворота установлены пальцы с эксцентричными поверхност ми , предназначенным дл контактировани с жесткими рычагами.For this purpose, the axes of rotation of the levers are arranged parallel to the axis of rotation of the bar and on the cage, the fingers with eccentric surfaces are arranged to rotate, intended to contact with rigid levers.

На фиг. .1 изображено предлагаемое устройство с частично неизображенной обоймой , настроенное на пруток нанменынего размера (штрих-пунктиром показано положение рычага при поддержке прутка наибольшего размера); на фиг. 2 разрез А-А фиг. 1; на фиг. 3-вид Б фиг. 1, развертка; на фиг. 4 -вид В фиг. 2, развертка; на фиг. 5 - рычаг с вращающимс роликом; на фиг. 6 -разрез Д-Д фиг. 7; на фиг. 7- разрез Г-Г фиг. 6.FIG. .1 shows the proposed device with a partially non-displayed cage, tuned to a bar of nanometer size (the dotted line shows the position of the lever with the support of the bar of the largest size); in fig. 2, section A-A of FIG. one; in fig. 3, view B of FIG. 1, sweep; in fig. 4-view In FIG. 2, sweep; in fig. 5 - lever with rotating roller; in fig. 6 is a section DDD of FIG. 7; in fig. 7- section GGD FIG. 6

Устройство дл поддержки прутка состоит из неподвижного корпуса 1 (фиг. 1), внутри которого на ос х 2 насажены рычаги 3 со скосами. Между этими скосами и отверстием корпуса имеютс эксцентричныеThe device for supporting the rod consists of a fixed case 1 (Fig. 1), inside of which the levers 3 with bevels are mounted on axles x 2. Between these bevels and the body opening are eccentric.

Claims

pins 4 fastened with nuts 5 (fig. 2) in the cage 6. To adjust the cage 6 to another diameter, the cage 6 with the sleeve 7 attached to it can be rotated relative to the housing 1 at a certain angle, the maximum value of which is limited by bolts 8 and circular grooves in the cage 6. For reliable fixation of the cage relative to the housing, a mouse tooth notch is made at their adjoining ends (Fig. 3). On the case I there is a risk, and on the sleeve 7 attached to the holder 6 - a scale (Fig. 4), the use of which can be spread the levers to the required bar diameter. Bolts 8 with ganks connect the yoke to the body. The springs 9 and the screws 10 do not allow the levers 3 to move to the axis of rotation of the rod in the absence of the latter. The levers 3 on the axles are fitted with a gap between the rollers 12, which are in contact with the bar 13. Before using the device, loosen the bolts 8, turn, use the scale on the sleeve 7, the holder 6 relative to the housing I. After entering the device inside the bar and rotating it supported by the ends of rigid arms 3, which are evenly spaced circumferentially at equal distances from the axis of rotation of the bar. In order to limit the curvature of the free part of the rotating bar 13 in the rotating feed pipe, the housing I is mounted on the feed pipe rotating together with the rod 13. The housing 1 can be located on the feed pipe 14, onto which the feed collet 15 is screwed. The left end of the feed pipe 14 is located between the end of the housing and the disk 6. On the housing there is a support 17, which transmits the longitudinal movement of the return pipe 14 and the feed rod. To adjust the device to a specific diameter of the bore of the supporting arms 3, you need to take the holder b to the left, disengage it from the body I and compress the spring 18, and then use the scale on the sleeve 7 to rotate it relative to the body (for 934 reducing the section - counterclockwise). After installing the holder b in a predetermined position, it is released - and under the action of springs 18 due to notches such as a “green tooth” engages with Case I. Running the cage spring-loaded allows you to quickly and simply adjust the device to the desired size. Claim device A bar support device comprising a stationary body within which rigid levers arranged rotatably relative to the axes fixed in the body and which are connected to the body a rotatable yoke, which is opposed to the body, is positioned uniformly around the circumference. } rotate the rod, the axis of rotation of the levers are parallel to the axis of rotation of the rod, and the yoke is provided with fingers, also installed with the possibility of rotation and made with eccentric E surfaces intended for engagement with the rigid levers. Sources of information taken into account in the examination: 1. German Patent No. 717362, cl. 49a, 22/01, 1942.

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