SU850314A1

SU850314A1 - Apparatus for clamping parts

Info

Publication number: SU850314A1
Application number: SU792849251A
Authority: SU
Inventors: Владимир Никитович Баран
Original assignee: Каменец-Подольский Завод Дереворежущегоинструмента Им. Петровского
Priority date: 1979-12-07
Filing date: 1979-12-07
Publication date: 1981-07-30

Description

Изобретение относится к машиностроению и может быть использовано для закрепления изделий и инструмента при . механической обработке. Известно устройство для зажима ³деталей с базированием по отверстию, содержащее полую концевую оправку с базовым пояском и упорным буртом на конце, в которой установлен зажимной элемент и связанная с ним тя- ^ига привода ζΐ].The invention relates to mechanical engineering and can be used to secure products and tools when machined. A device for clamping parts ³ with basing on opening, comprising a hollow mandrel with a base end and a belt end on the thrust collar in which is mounted a clamping member and associated actuator ^and n tya- ζΐ].

Однако это устройство имеет сложную конструкцию и не обеспечивает надежное закрепление' детали по торцу. 15However, this device has a complex structure and does not provide reliable fastening of the part at the end. fifteen

Цель изобретения - обеспечение надежного закрепления детали по торцу и упрощение конструкции зажимного устройства.The purpose of the invention is the provision of reliable fastening of the part at the end and simplification of the design of the clamping device.

• Поставленная цель достигается 20• The goal is achieved 20

Тем, что устройство снабжено установленным внутри оправки соосно с ней и жестко с ней связанным посредством штифта стержнем с конусным концом, выступающим за торец оправки, а зажимной элемент выполнен в виде цанги, установленной с возможностью осевого перемещения на стержне, причем на конце упругой части цанги снаружи ее выполнен бурт, диа- 30 метр которого в исходном состоянии не превышает диаметра посадочного пояска оправки, а внутри выполнена коническая поверхность, контактирующая при зажиме с конусом стержня.The fact that the device is equipped with a rod installed inside the mandrel coaxially with it and rigidly connected by a pin with a conical end protruding beyond the end of the mandrel, and the clamping element is made in the form of a collet mounted with the possibility of axial movement on the rod, and at the end of the elastic part of the collet on the outside, a collar was made, the diameter of which 30 meters in its initial state does not exceed the diameter of the mandrel landing belt, and on the inside there is a conical surface in contact with the cone of the rod during clamping.

На чертеже изображено предлагаемое устройство, разрез.The drawing shows the proposed device, section.

Устройство содержит полую концевую оправку 1 с базовыми поверхностями - посадочным пояском Я и упорным буртом (Г, стержень 2, установленный соосно с корпусом и жестко с ним связанный штифтом 3, выполненный в виде цанги зажимной элемент 4, резьбовой муфтой 5 связанный с тягой привода 6.The device contains a hollow end mandrel 1 with base surfaces - a landing belt I and a thrust collar (G, rod 2, mounted coaxially with the body and rigidly connected with a pin 3, a clamping element 4 made in the form of a collet, a threaded sleeve 5 connected to the drive rod 6 .

На конце упругой части цанги 4 с целью взаимодействия при зажиме с роверхностью -б обрабатываемого изделия 7 выполнен бурт 8.A collar 8 is made at the end of the elastic part of the collet 4 with the purpose of interaction when clamping with the surface b of the workpiece 7.

• Устройство для зажима работает следующим образом.• The device for clamping works as follows.

Обрабатываемая деталь устанавливается на базовом пояске я до упора в поверхность & оправки 1. Не указанный на чертеже силовой привод перемещает тягу б, которая посредством муфты 5 связана с цангой 4. При перемещении цанги по стержню ее внутренняя коническая поверхность вступает в контакт с конусом на конце стержня. Упругие лепестки цанги расходятся, а при дальнейшем перемещении вступают во взаимодействие с торцовой поверхностью б обрабатываемой детали и надежно ее поджимают к » базовой поверхности δ.- После обработки детали цанга 4 отводится в-исходное положение, при этом лепестки ее сводятся й' деталь снимается.The workpiece is installed on the base belt I until it stops at the surface & mandrels 1. An actuator not indicated on the drawing moves the rod b, which is connected via the coupling 5 to the collet 4. When moving the collet along the rod, its inner conical surface comes into contact with the cone at the end the rod. The elastic petals of the collet diverge, and with further movement they interact with the end surface b of the workpiece and tightly press it to the "base surface δ. - After machining the part, the collet 4 is returned to its original position, while its petals are reduced and the part is removed.

Предлагаемое устройство просто и . _ дешево в изготовлении, повышает быстродействие зажима на 40% и может быть использовано для закрепления изделий типа втулок, колец, дисков, обрабатываемых по наружной поверхности на токарных, шлифовальных и других стан- 15 ках, а также для крепления режущего инструмента типа фрез.The proposed device is simple and. _ cheap to manufacture, increases the clamping speed by 40% and can be used to fix products such as bushings, rings, disks, machined on the outer surface on turning, grinding and other machines, as well as for fastening cutting tools such as milling cutters.

Claims

(54) DEVICE FOR CLAMPING DETAILS The invention relates to machine building and the fixing of products and tools and mechanical processing can be used. It is known a device for clamping parts based on a hole comprising a hollow end mandrel with a base joint and an end shoulder at the end in which the clamping element is installed and the drive rod ij is associated with it. However, this device has a complex structure and does not provide reliable fastening of the part along the end of the invention — ensuring the reliable fastening of the part to the end and simplifying the design of the clamping device. The goal is achieved by IreM that the device is equipped with a rod mounted inside the mandrel coaxially with it and rigidly connected with a pin with a tapered end protruding beyond the mandrel end, and the clamping element is designed as a collet that is installed with the possibility of axial movement on the rod not at the end of the elastic part of the collet, outside of it, there is a collar, the diameter of which in the initial state does not exceed the diameter of the mounting mandrel, and inside there is a conical surface that is in contact with the cone Ster req The drawing shows the proposed device, the cut. The device contains a hollow end mandrel 1 with base surfaces - a landing pad d and a stop Hbw collar (G, rod 2, mounted coaxially with the body and rigidly connected with it by a pin 3, a clamping element 4 made in the form of a collet, a threaded coupling B connected with a hard drive 6. At the end of the elastic part of the collet 4 to engage with clamping with a surface, a shoulder 8 is made in the workpiece 7. The clamping device works as follows. The workpiece is mounted on the base until it stops at the surface of 1. An actuator not indicated in the drawing moves a pu b which is connected by a coupling 5 to the collet 4. When the collet moves along the rod, its inner conical surface comes into contact with the cone at the end of the rod. the further movement interacts with the end surface of the workpiece and reliably presses it against the base surface f.- After processing the part, the collet 4 is retracted to its original position, while its petals are reduced and the part is removed. The proposed device is simple and cheap to manufacture, leads to a rapid reduction of 3x1 by 40% and can be used for fastening products such as sleeves, rings, discs machined on the outer surface on turning, grinding and other machines, as well as fastening cutting tools like mills . Claims An apparatus for clamping parts, based on a bore, comprises a hollow end mandrel with a base belt and an end shoulder at the end in which the clamping element is installed and associated with it a drive rod, characterized in that and simplify the construction, the device is equipped with a rod installed with a tapered end protruding beyond the end of the mandrel fixed with the pin and rigidly connected with it by means of a pin, and the clamping element is designed as a Collet second axially movable on the shaft, and at the end of the elastic part of the collet outwardly vylolnen its shoulder with a diameter in the initial state does not exceed the diameter of the girdle planting mandrel is made conical and the inside contacting surface during the clamping rod with cone. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 445531, cl. B 23 B 31/02, 1971.