SU872226A1

SU872226A1 - Head for lapping planar and cylindrical surfaces

Info

Publication number: SU872226A1
Application number: SU792851593A
Authority: SU
Inventors: Вячеслав Иванович Новоселов; Анатолий Зеликович Рамм
Original assignee: Предприятие П/Я А-1512
Priority date: 1979-11-14
Filing date: 1979-11-14
Publication date: 1981-10-15

Description

(54) ГОЛОВКА ДЛЯ ДОВОДКИ ПЛОСКИХ и ЦИЛИНДРИЧЕСКИХ ПОВЕРХНОСТЕЙ(54) HEAD FOR FLOORING AND CYLINDRICAL SURFACES

1one

Изобретение относитс к механической обработке , в частности, к отделочным операци м , суперфинишированию.The invention relates to mechanical processing, in particular, to finishing operations, superfinishing.

Известна головка дл финишной обработки , выполненна охватываюшей с расположенными в ней держател ми, на которых креп тс абразивные бруски 1.The known head for finishing, which is made encompassing with holders in it, on which the abrasive bars 1 are fastened.

К недостаткам известной головки относитс ее нестабильность в работе и невозможность саморегулировани , что приводит к ее поломке.The disadvantages of the known head are its instability in operation and the impossibility of self-regulation, which leads to its breakage.

Известна также головка дл доводкиKnown also head for finishing

поверхностей, содержаща держатель брусков , пружинный механизм прижима и приводной механизм 2.surfaces, comprising a block holder, a spring clamp mechanism and a drive mechanism 2.

Однако в головке усилие прижима брусков к детали не регулируетс и определ ет- 5 с жесткостью пружин. Бруски наход тс в посто нном контакте с деталью, не исправ л погрешности геометрической формы детали .However, in the head, the force of clamping the bars to the part is not adjustable and it determines that the pressure is 5 with the spring rigidity. The bars are in constant contact with the part, having not corrected the errors of the geometric shape of the part.

Цель изобретени - расширение функ- „ циональных возможностей путем регулировани усили прижима инструмента.The purpose of the invention is to expand the functional possibilities by adjusting the pressing force of the tool.

Указанна цель достигаетс тем, что головка снабжена гидроцилиндром, корпусThis goal is achieved by the fact that the head is equipped with a hydraulic cylinder, the body

которого соединен с пружинным механизмом , шток с приводным механизмом, а держатель установлен непосредственно на корпусе , причем надпоршнева и подпоршнева полости заполнены рабочей средой и объединены между собой каналом с дросселем. На фиг. 1 изображена принципиальна схема головки; на фиг. 2 - схема поджима головки к обрабатываемой поверхности; на фиг. 3 - головка в рабочем положении.which is connected to the spring mechanism, a rod with a drive mechanism, and the holder is mounted directly on the housing, with the piston and the piston cavity being filled with working medium and interconnected by a channel with a throttle. FIG. 1 shows a schematic diagram of the head; in fig. 2 is a diagram of pressing the head to the treated surface; in fig. 3 - head in working position.

Головка содержит держатель 1 с абразивными брусками 2. Держатель св зан с корпусом 3 гидроцилиндра, заполненного рабочей средой. Внутри корпуса размещен поршень 4, соединенный с приводным механизмом 5. Поршень 4 делит корпус 3 на две полости 6 и 7, объединенны-; между собой каналом 8 через дроссель псргмениого сечени 9 и двухходовой золе ,: 10.The head contains a holder 1 with abrasive bars 2. The holder is associated with the housing 3 of the hydraulic cylinder, filled with working medium. Inside the housing there is a piston 4, connected to the drive mechanism 5. The piston 4 divides the housing 3 into two cavities 6 and 7, united; between each other by channel 8 through the throttle of the cross section 9 and the double ash,: 10.

Claims

The spring 11 is supported on the housing 3 and equipped with an adjusting screw 12, the nut 13 of which is rigidly fixed. The upward movement of the housing 3 is limited by a fixed stop 14. The movement of the piston 4 is restricted by an adjustable stop. 15. The part is being processed. 16. The head is operated in the following manner. In the initial position, the holder 1 is retracted upwards from the surface to be processed by a driving mechanism 5. At that, the piston of the driving mechanism, acting on the piston 4 through the working medium, presses the housing 3 to the fixed support 14, compressing the spring 11. The spool closes the channel 8 to prevent the piston 4 from moving housing 3. When machining a part 16, the drive mechanism 5 is mixed, the piston 4 is pointing downwards to the adjustable stop 15. The piston 4 lowers the housing 3 with the holder 1 through the working medium, but the bar 2 does not reach the treated surface by an amount determined by Can be adjusted by the adjustable stop 15. The spring 11 in this position of the housing 3 has a preload nat corresponding to the working force of bar 2 on the part 16. Thereafter, the spool 10 switches to the position connecting cavities 6 and 7 through the throttle 9. Under the action of the spring the body 3 moves, and consequently, the working medium flows from the cavity 6 into the cavity 7. The body 3 moves relative to the fixed piston 4, and the holder 1 with the fixed bar 2 is brought to the surface with a force adjusted by a screw 12 and corresponding uyuschim working pressure treatment. During processing, bar 2 is in contact with the protruding parts of the part profile being machined and does not have time to fall into the profile hollows during rotation due to its inertia. After the bar, sn in the allowance from the protruding part, is above the depression, it is lowered by the action of the spring And and the inertia of the hydraulic cylinder by the amount of the allowance being removed and processes the next protruding part. The inertia is calculated depending on the number of revolutions of the part, the speed of the reciprocating movement and the shape of the surface to be machined, and is adjusted by the screw 12 and the throttle 9. Eliminating the errors of geometric shape, the bar comes into constant contact with the profile and processes the micro-roughness of the part to the required value. The removal of the housing 3 with the holder 1 is carried out in reverse order. The proposed head allows you to expand the functionality of the debugging, since it combines in one operation the direction of a geometric shape and obtaining a given surface finish. The invention includes a head for adjusting flat and cylindrical surfaces, a bar holder, a spring mechanism, and a drive mechanism, characterized in that, in order to extend the functionality by adjusting the pressing force, the head is provided with a hydraulic cylinder, the casing of which is connected to the spring mechanism, the drive mechanism is HH3iMOM, and the holder is mounted directly on the body, with the over-piston and sub-cavity cavities filled with working medium and interconnected by a channel with a dross Lemma. Sources of information taken into account in the examination 1. USSR author's certificate number 383577, cl. B 24 B 35/00, 1970.

2. USSR author's certificate number 616117, cl. 24/35/00, 1976.