SU814698A1

SU814698A1 - Apparatus for hydraulic abrasive working of parts

Info

Publication number: SU814698A1
Application number: SU782629883A
Authority: SU
Inventors: Валентин Александрович Булкин
Original assignee: Bulkin Valentin A
Priority date: 1978-06-20
Filing date: 1978-06-20
Publication date: 1981-03-23

Description

Изобретение относится к гидроабразивной обработке деталей.The invention relates to waterjet processing of parts.

Известны устройства для гидроабразивной обработки деталей, содержащие корпус, центральный патрубок для подвода, потока абразива низкого давления, расположенный снаружи концентрично ему конический насадок для подвода воды высокого давления с jg вершиной конуса, расположенный за пределами центрального патрубка E1J .Known devices for waterjet machining of parts, comprising a housing, a central nozzle for supplying a low-pressure abrasive stream, a conical nozzle for supplying high-pressure water with a jg apex cone located outside the central nozzle E1J located outside it.

Недостаток известного устройства заключается в малой эффективности обработки деталей.A disadvantage of the known device is the low efficiency of processing parts.

Цель изобретения - повышение 15 эффективности обработки.The purpose of the invention is to increase the processing efficiency.

i Указанная цель достигается тем, что устройство снабжено дополнительным коническим насадком для подвода воды высокого давления, располо- 20 женным снаружи упомянутого конического' насадка и концентрично ему_, при этом вершина дополнительного конического насадка расположена за пределами вершины упомянутого конического насадка.i This goal is achieved by the fact that the device is equipped with an additional conical nozzle for supplying high-pressure water located outside the concentric nozzle and concentric with it, wherein the top of the additional conical nozzle is located outside the top of the said conical nozzle.

На чертеже схематично изображено предлагаемое устройство, общий вид.The drawing schematically shows the proposed device, General view.

Устройство состоит из корпуса 1, соосно которому установлен коничес- 30 кий насадок 2. Внутри них расположены центральный патрубок 3 и трубопровод 4 для подвода потока абразива. При этом наружная поверхность патрубка 3 выполнена конической и имеет круговой конический пояс 5, сопрягающийся с внутренней поверх- : ностью конического насадка 2 и предназначенный для центрирования патрубка 3 относительно последнего, Пояс 5 имеет сквозные каналы 6 для прохода воды. На корпусе 1 закреплен дополнительный конический насадок 7, имеющий кольцевой бурт 8, предназначенный для закрепления основного конического насадка 2 на корпусе 1. С дополнительным коническим насадком 7 соединены один или несколько трубопроводов 9 для подвода воды высокого давления. Конический насадок 2 выполнен и установлен так, что вершина его расположена за пределами центрального патрубка 3, а вершина дополнительного конического насадка 7 расположена за пределами вершины основного конического насадка 2.The device consists of a housing 1, coaxially to which a conic nozzle 30 is installed 2. Inside them are located a central pipe 3 and a pipe 4 for supplying an abrasive stream. The outer surface of the pipe 3 is made conical and has a circular conical belt 5, mating with the inner surface of the conical nozzle 2 and designed to center the pipe 3 relative to the latter. The belt 5 has through channels 6 for water passage. An additional conical nozzle 7 having an annular collar 8 is fixed on the housing 1, which is used to fix the main conical nozzle 2 on the housing 1. One or more pipelines 9 for supplying high pressure water are connected to the additional conical nozzle 7. The conical nozzle 2 is made and installed so that its top is located outside the central pipe 3, and the top of the additional conical nozzle 7 is located outside the top of the main conical nozzle 2.

Устройство работает следующим образом.The device operates as follows.

Поток абразива 10 под действием низкого давления (3-4 кг/см^{1 2}) по814698 дают через трубопровод 4 в центральный патрубок 3, из которого он истекает с транспортной скоростью.The flow of abrasive 10 under the action of low pressure (3-4 kg / cm ^{1 2} ) through 814698 give through the pipe 4 to the Central pipe 3, from which it flows at a transport speed.

Через кольцевую полость, обра' зованную корпусом 1 и трубопроводом 4, подводят поток 11 вода высокого давления (150—200 кг/см)j который Сроходит через сквозные каналы 6 парубка 3 и формируется с помощью конического насадка 2 и патрубка 3 в виде сужающегося потока 12 вода высокого давления, охватывающего поток абразива. При этом упомянутые потоки сходятся в плоскости 1-1 за пределами патрубка 3 и насадка 2 с образованием гидроабразивной струи 13. Поток 11 воды высокого давления захватывает абразивные частицы, разгоняет их. Через трубопровод 9 подводят дополнительный поток вода высокого давления, который проходит меж- ду коническими насадками 2 и 7 и формируется в виде сужающегося потока 12, охватывающего гидроабразйвную струю 13 и сходящегося.'с ней в плоскости 11-11, расположенной за плоскостью ее первичного образования I - I. Дополнительный сужающийся поток 12 вода сообщает гидроабразивной струе 13 дополнительную скорость (т. е. усредняются скорости потока 12 и струи 13) и фокусирует ее. Сфор-. мированную таким образом, вторичную гидроабразйвную струю 14 направляют на обрабатываемое изделие.A high pressure water stream (150-200 kg / cm2) j which flows through the through channels 6 of the pipe 3 and is formed with the help of a conical nozzle 2 and pipe 3 in the form of a tapering stream is fed through the annular cavity formed by the housing 1 and pipeline 4 12 high pressure water spanning the abrasive stream. Moreover, the mentioned flows converge in the plane 1-1 outside the nozzle 3 and nozzle 2 with the formation of a hydroabrasive jet 13. The stream 11 of high-pressure water captures abrasive particles, accelerates them. An additional stream of high-pressure water is supplied through the conduit 9, which passes between the conical nozzles 2 and 7 and is formed in the form of a tapering stream 12, enclosing the waterjet 13 and converging with it in a plane 11-11 located beyond the plane of its primary formation I - I. An additional tapering stream 12 of water gives the hydroabrasive stream 13 an additional speed (i.e., the speeds of stream 12 and stream 13 are averaged) and focuses it. Sfor-. Thus formed, the secondary waterjet jet 14 is directed to the workpiece.

Выполнение устройства в соответствии с известным изобретением позволит значительно повысить стойкость to выходного патрубка, в связи -с этим поток абразива разгоняют за пределами патрубка, т. е. вне изнашиваемых деталей.The implementation of the device in accordance with the known invention will significantly increase the resistance to the outlet pipe, in this regard, the flow of the abrasive is accelerated outside the pipe, i.e., outside of the wearing parts.

При этом обеспечивается повышение эффективности обработки изделий благодаря применению дополнительного сужающегося потока вода высокого давления, сходящегося с гидроабразивной струей, за плоскостью ее первичного образования.This increases the efficiency of processing products through the use of an additional tapering stream of high pressure water, converging with a waterjet jet, beyond the plane of its primary formation.

Claims

This invention relates to waterjet machining. Devices for water-jet processing of parts are known, comprising a housing, a central nozzle for supplying a low pressure abrasive flow, an external nozzle for supplying high pressure water with a cone apex, located outside the central nozzle, is located outside the center. part processing efficiency. The purpose of the invention is to increase the processing efficiency. i The goal is achieved by the fact that the device is provided with an additional conical nozzle for supplying high-pressure water located outside the said conical nozzle and concentric with it, the top of the additional conical nozzle is located beyond the tip of the above-mentioned conical nozzle. The drawing schematically shows the proposed device, common to the Device consists of a housing 1 / coaxially with a conical nozzle 2 installed. Inside them are located the central first branch pipe 3 and the pipeline 4 for supplying the flow of abrasive. At the same time, the outer surface of the nozzle 3 is made conical and has a circular conical along C 5, which mates with the inner surface; conic nozzle 2 and designed to center the nozzle 3 relative to the latter, In c 5 has through channels 6 for the passage of water. An additional conical nozzle 7 is attached to the housing 1, having an annular shoulder 8 for fixing the main conical nozzle 2 on the housing 1. One or more pipelines 9 are connected to the additional conical nozzle 7 for supplying high pressure water. Conical nozzles 2 are made and. installed so that its top is located outside of the central nozzle 3, and the top of the additional conical nozzle 7 is located outside the top of the main conical nozzle

2. The device operates as follows. The abrasive flow 10 under the action of low pressure (3-4 kg / cm) is fed through pipe 4 into the central tube 3, from which it flows out at transport speed. A stream 11 of high pressure water (150-200 kg / cm) is drawn through an annular cavity formed by the housing 1 and the pipeline 4, which is drawn through the through channels of the co-pipe 3 and is formed with the help of a conical nozzle 2 and a nozzle 3 in the form of a narrowing stream 12 high pressure covering the flow of abrasive. At the same time, the mentioned streams converge in the plane 1-1 outside the nozzle 3 and the nozzle 2 with the formation of a hydroabrasive jet 13. The high-pressure water flow 11 captures abrasive particles and accelerates them. Pipeline 9 is supplied with an additional stream of high pressure water, which passes between conical nozzles 2 and 7 and is formed as a narrowing stream 12, which encloses the water jets 13 and converges with it in the plane 11-11, located behind the plane of its primary formation I - I. The additional tapering water stream 12 imparts an additional speed to the waterjet 13 (i.e., the flow rates 12 and the jets 13 are averaged) and focuses it. The thus formed secondary hydroabrasive jet 14 is directed onto the workpiece. Execution of the device in accordance with the known invention will significantly increase the resistance of the outlet nozzle, in connection with which the abrasive flux is accelerated outside the nozzle, i.e. outside the wear parts. At the same time, an increase in the processing efficiency of products is ensured due to the use of an additional narrowing stream of high pressure water converging with a hydroabrasive jet, behind the plane of its primary formation. The invention includes a device for waterjet processing, comprising a housing, a central nozzle for supplying a stream of low pressure abrasive and a conical nozzle outside the center of which is tapering to supply high pressure water with a cone tip located outside the center nozzle, which is designed to increase treatment efficiency, it is provided with an additional conical nozzle for supplying high-pressure water located outside the said conical nozzle and en- him, the vertex of the conical nozzle is located further outside of the conical vertex of said nozzle. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 330006, cl. B 24 C 5/04, 1969