SU722740A1

SU722740A1 - Article-polishing method

Info

Publication number: SU722740A1
Application number: SU752190461A
Authority: SU
Inventors: Станислав Альбертович Ловнар
Original assignee: Физико-технический институт АН Белорусской ССР
Priority date: 1975-11-18
Filing date: 1975-11-18
Publication date: 1980-03-25

Description

Изобретение относится к чистовой обработке изделий, в частности, к полированию деталей магнитно-абразивной смесью.The invention relates to the finishing of products, in particular, to polishing parts with a magnetic abrasive mixture.

Известен способ полирования изделий в условиях их перемещения в рабочей среде, состоящей- из жидкости и ферромагнитных абразивных частиц, прижимаемых к обрабатываемым поверхностям изделия магнитным полем, при этом силу прижима частиц К изделию регулируют путем изменения зазора между изделием и рабочими наконечниками электромагнитов (11^,и A known method of polishing products under conditions of their movement in a working medium, consisting of a liquid and ferromagnetic abrasive particles pressed against the workpiece surfaces by a magnetic field, while the force of the particles against the product is controlled by changing the gap between the product and the working tips of the electromagnets (11 ^{, and}

Однако при обработке крупногабаритных деталей такой способ требует применения тяжелых, занимающих много места, электромагнитов вследствие значительного поглощения энергии материалом изделия из-за пронизывания магнитным потоком тела вращающегося изделия. Кроме того, в условиях индивидуального и мелкосерийного производства изделий для поддержания оптимального рабочего зазора между полюсными наконечниками электромагнитной системы и обрабатываемой поверхностью изделия необходимы частые переналадки магнитной системы устройства, применение разно2 образных по конфигурации полюсных наконечников и различных рабочих ванн.However, when processing large-sized parts, this method requires the use of heavy, space-consuming, electromagnets due to the significant absorption of energy by the material of the product due to the penetration of the body of the rotating product by the magnetic flux. In addition, in conditions of individual and small-scale production of products, in order to maintain an optimal working gap between the pole pieces of the electromagnetic system and the surface of the item to be worked, frequent readjustments of the device’s magnetic system, the use of pole pieces with different configurations and various working baths are necessary.

Цель изобретения — упрощение способа по-. пирования изделий за счет ликвидации громоздкого технологического оборудования и расширение номенклатуры полируемых изделий без переналадки устройства.The purpose of the invention is the simplification of the method. feasting products by eliminating cumbersome technological equipment and expanding the range of polished products without changing the device.

Это достигается тем, что в качестве рабочей среды используют жидкость, не способную смачивать изделие и ферромагнитные абразивные частицы, например расплав свинца, а магнитное поле образуют за счет намагничивания изделия.This is achieved by the fact that as a working medium a liquid is used that is not able to wet the product and ferromagnetic abrasive particles, for example, lead melt, and a magnetic field is formed due to the magnetization of the product.

На чертеже приведена конструкция устройства, реализующего предлагаемый способ.The drawing shows the design of a device that implements the proposed method.

Изделие 1, закрепленное в патроне 2 шпинделя 3, установленного с возможностью совершения планетарного движения в процессе обработки, помещено в расплав свища 4 и притягивает своей намагниченной поверхностью ферромагнитный абразивный порошок 5. На шпинделе 3 неподвижно закреплена электромагнитная катушка 6 и токоподводящее устройство 7, содержащее щетки.The product 1, mounted in the chuck 2 of the spindle 3, mounted with the possibility of planetary motion during processing, is placed in the melt of the fistula 4 and attracts a ferromagnetic abrasive powder 5 with its magnetized surface. An electromagnetic coil 6 and a power supply device 7 containing brushes are fixedly mounted on the spindle 3 .

Способ осуществляют следующим образом.The method is as follows.

Включают электромагнитную систему и изделие 1, установленное в патроне 2 шпинделя 3, покрывают ферромагнитным порошком 5. Затем изделие погружают в расплав свинца 4 и включают привод планетарного вращения шпинделя 3. Частицы ферромагнитного абразивного порошка 5 под действием магнитного поля прижимаются к изделию, а под воздействием обтекаемого по изделию расплава свинца перемещаются по обрабатываемой, поверхности 10 изделия. Происходит полирование изделия, затем выключается электромагнитная система, шпиндель 3 поднимается и выключается привод движения шпинделя. Изделие извлекают из патрона и цикл повторяется. 15The electromagnetic system is turned on and the product 1 installed in the chuck 2 of the spindle 3 is coated with ferromagnetic powder 5. Then the product is immersed in the lead melt 4 and the planetary rotation drive of the spindle 3 is turned on. Particles of the ferromagnetic abrasive powder 5 are pressed against the product under the influence of a magnetic field, and under lead melt streamlined over the product is moved along the workpiece surface 10 of the product. The product is polished, then the electromagnetic system is turned off, the spindle 3 rises and the spindle drive is turned off. The product is removed from the cartridge and the cycle repeats. fifteen

Использование данного способа позволит упростить полирование изделий за счет ликвидации громоздкого технологического оборудования, а также распространить область применения магнитно-абразивного полирования на 20 индивидуальное и мелкосерийное производство.Using this method will simplify the polishing of products due to the elimination of cumbersome technological equipment, as well as extend the scope of magnetic abrasive polishing to 20 individual and small-scale production.

Claims

The invention relates to the finishing of products, in particular, to the polishing of parts with a magnetic abrasive mixture. The known method of polishing products under the conditions of their movement in a working medium consisting of liquid and ferromagnetic abrasive particles pressed by a magnetic field to the treated surfaces of the product, while the force of pressing the particles to the product is adjusted by changing the gap between the product and the electromatnite working tips ( 1 However, when machining large parts, such a method requires the use of heavy, space-consuming electromagnets due to the significant energy absorption by the material of the product due to In order to maintain an optimal working gap between the pole tips of the electromagnetic system and the treated surface of the product, frequent changeovers of the magnetic system of the device, the use of a variety of configuration of pole tips and different working baths are necessary to maintain the optimum working gap of the rotating product. The purpose of the invention is to simplify the method of polishing products by eliminating cumbersome technological orudovani raaiirenie nomenclature and polished articles without readjustment device. This is achieved by using a liquid that is unable to wet the product and ferromagnetic abrasive particles, such as molten lead, as the working medium, and the magnetic field is formed by magnetization of the product. The drawing shows the design of the device that implements the proposed method. The product 1, fixed in the cartridge 2 of the spindle 3, installed with the possibility of making a planetary movement during processing, is placed in the molten lead 4 and attracts with its magnetized surface a ferromagnetic abrasive powder 5. On the spindle 3, the electromagnetic coil 6 and containing brushes. The method is carried out as follows. Electromagnetic system is turned on and product 1 installed in cartridge 2 of spindle 3 is coated with ferromagnetic powder. Then the product is immersed in lead 4 melt and the drive of planetary rotation of spindle 3 is activated. Particles of ferromagnetic abrasive powder 5 are pressed to the product by magnetic the lead melted around the product is moved along the surface of the product being processed. The product is polished, then the electromagnetic system is turned off, spindle 3 is raised and the drive of the spindle is turned off. The product is removed from the cartridge and the cycle repeats. Using this method will simplify the polishing of products by eliminating cumbersome technological equipment, as well as extend the field of application of magnetic abrasive polishing to individual and small-scale production 04 Invention 1. Method of polishing products under conditions of their mixing in a working medium composed of liquid and ferromagnetic abrasive particles pressed by magnetic field to the treated surfaces of the product, characterized in that, in order to simplify the method, to form Neither the working medium uses a liquid that is unable to wet the product and ferromagnetic abrasive particles, and the magnetic field is orased by magnetization of the product.

2. Method according to claim 1, characterized in that a lead melt is used to form the working medium. Sources of information taken into account during the examination 1. Yu. M. Baron. Technology of abrasive processing in a magnetic field. Leningrad, Mechanical Engineering, 1975, p. 98-102.