SU831528A1

SU831528A1 - Spindle assembly

Info

Publication number: SU831528A1
Application number: SU792795413A
Authority: SU
Inventors: Лев Григорьевич Рейдман
Original assignee: Rejdman Lev G
Priority date: 1979-07-11
Filing date: 1979-07-11
Publication date: 1981-06-04

Description

(54) ШПИНДЕЛЬНЫЙ УЗЕЛ(54) SPINDLE KNOT

1one

Изобретение относитс к станкостроению и может быть использовано в шпиндельных узлах металлорежущих станков.The invention relates to a machine tool industry and can be used in spindle assemblies of machine tools.

Известно устройство дл отвода тепла от шпиндельных подшипников и стабилизации температуры, например в алмазно-расточных станках, с установленной в корпусе шпиндельной головки гильзой, омываемой охлаждаюшей жидкостью, на внешней поверхности гильзы выполнена одна или несколько винтовых канавок с циркулирующей в них под давлением охлаждаюшей жидкостью 1.A device for removing heat from spindle bearings and temperature stabilization, for example, in diamond boring machines, with a sleeve installed in the housing of the spindle head, washed by a cooling fluid, has one or several helical grooves with cooling fluid 1 circulating in them under pressure on the outer surface of the sleeve. .

Недостатками устройства вл ютс сложность технологического исполнени конструкции и необходимость создани отдельной системы дл охлаждени жидкости.The drawbacks of the device are the complexity of the technological design and the need to create a separate system for cooling the liquid.

Цель изобретени - упрощение конструкции .The purpose of the invention is to simplify the design.

Указанна цель достигаетс тем, что устройство дл стабилизации температуры выполнено в виде сквозных каналов, равномерно расположенных по окружности внутри шпиндел вдоль его оси, причем каналы вакуумизированы и заполнены теплоносителем .This goal is achieved by the fact that the device for temperature stabilization is made in the form of through channels evenly spaced circumferentially within the spindle along its axis, the channels being evacuated and filled with coolant.

На фиг. 1 изображен щпиндельный узел, общий вид, в разрезе; на фиг. 2 - разрез А-А на фиг. 1.FIG. 1 shows a split node, a general view, in section; in fig. 2 shows section A-A in FIG. one.

В корпусе 1 устройства установлен полый щпиндель 2 на подщипниках 3. Длк стабилизации температуры в щпинделе 2 выполнены продольные сквозные каналы 4, равномерно расположенные по окружности на его среднем диаметре. Каналы 4 вакуумизированы и заполнены теплоносителем 5, например дистиллированной водой или другими жидкост ми и газами. Каналы 4 с торцов запа ны или заварены, причем количество каналов 4 должно быть не менее двух, а их диаметр в пределах от 3-5 до 25-30 мм. Кроме того, продольные сквозные каналы 4 могут быть выполнены какIn the device case 1, a hollow spindle 2 is installed on the support 3. In order to stabilize the temperature in center 2, there are made longitudinal through channels 4, evenly spaced around the circumference at its average diameter. Channels 4 are vacuumized and filled with coolant 5, for example, distilled water or other liquids and gases. Channels 4 at the ends are sealed or welded, and the number of channels 4 must be at least two, and their diameter ranges from 3-5 to 25-30 mm. In addition, the longitudinal through channels 4 can be made as

под углом, так и параллельно оси щпиндел .at an angle, and parallel to the axis of the pinch.

Claims

The type of heat carrier 5, the size and number of channels 4 are determined by thermal calculation depending on the heat generation power of the bearings 3, the design of the spindle assembly, and the thermal characteristics of the components of the assembly. The device works as follows. When the spindle 2 rotates, the heat carrier 5 is located in the form of a thin film on the surface of the through channels 4, which are closer to the heat source — the bearings 3. During operation, the heat flux from the bearings 3 affects the heat generator 5, which evaporates and condenses on opposite surfaces. Heat is discharged into the surrounding medium through a pin hole.

2. Condensate formed under the influence of centrifugal forces returns to the evaporation zone, -t. i.e. to the surfaces of the channel 4 heated by the bearings 3, and the process of evaporation and condensation of the coolant 5 is repeated. Thus, the spindle assembly is cooled. With an increase in the spindle rotation speed, the heat transfer coefficient of the vapor of the heat carrier 5 increases, i.e., the cooling process of the spindle assembly is intensified. The invention simplifies the design of the spindle assembly. The invention includes a spindle assembly comprising a housing with a spindle mounted on the supports and a temperature stabilization device, characterized in that, in order to simplify the construction, the temperature stabilization device is made in the form of through channels evenly spaced around the circumference inside the spindle along its axis, moreover, the channels are evacuated and filled with coolant. Sources of information taken into account in the examination 1 USSR Author's Certificate No. 207641, c. In 23 Q And / And, 1963.