CN203245679U - Oil injection cooling device of machine tool spindle - Google Patents

Abstract

The utility model relates to a cooling device, in particular to a machine tool spindle oil injection cooling device used on a machine tool, comprising a cooling box, a pressure pump arranged at the bottom of the cooling box, and a cooling oil recovery tray connected to the cooling box through pipelines. The pressure pump is connected with a cooling part through a pipeline. The cooling part is composed of an upper pressing plate and a lower pressing plate. Each pressing plate is provided with four liquid outlets. The two pressing plates are interlocked to cool the machine tool spindle. The utility model has the characteristics of simple structure, easy installation, good cooling effect and no pollution to other parts in the main shaft chamber.

Description

Machine tool spindle oil injection cooling device

technical field

The utility model relates to a cooling device, in particular to an oil-injecting cooling device for a machine tool spindle used on a machine tool. the

Background technique

In the PCB micro-drilling process, because the product requirements are quite precise, higher requirements are placed on the machining accuracy of the machine tool. As far as high-speed machine tools are concerned, due to the high speed, high precision, and fast cutting speed, radial runout at the front end of the spindle is required. The end jump is less than 2-3um. Due to the long-term high-speed rotation of the machine tool spindle, a large amount of heat generated by the friction in the main sleeve of the machine tool spindle cannot be dissipated, and the deformation of the spindle is prone to occur, resulting in a reduction in the service life of the machine tool spindle. At the same time, due to the long The temperature of the spindle is too high during time processing, and the quality and accuracy of the processed products are prone to exceed the standard and become unstable. Therefore, the heat dissipation of the spindle is very important to ensure the accuracy of the machine. The main shaft of a lathe usually has the highest temperature at the parts where both ends rub against the bearings, and the existing main shaft heat dissipation technology usually uses a hose to directly spray the coolant onto a certain part of the main shaft, so that at most only one end of the main shaft The high-heat part can touch the coolant, but the high-heat part at the other end has not been in contact with the coolant, which leads to the unsatisfactory cooling effect of the spindle. In addition, due to the rotation of the spindle, the coolant splashes everywhere and pollutes other parts of the spindle chamber. the

Contents of the invention

The purpose of this utility model is to solve the problem of unsatisfactory cooling effect and pollution of the spindle chamber in the prior art when cooling the spindle of the machine tool, and to provide a cooling device that can be easily installed and cooled without changing any components of the original machine tool. The machine tool spindle oil injection cooling device has good effect and will not cause pollution to other components in the spindle chamber. the

The technical scheme that the utility model adopts is:

An oil injection cooling device for a machine tool spindle, comprising a cooling box, a pressure pump arranged at the bottom of the cooling box, and a cooling oil recovery tray connected to the cooling box through a pipeline, the pressure pump is connected with a cooling component through a pipeline, and the The cooling part of the machine tool is composed of an upper pressing plate and a lower pressing plate, and the two pressing plates are interlocked to contain the cooling part of the machine tool spindle.

There is a semicircular groove in the middle of the contact surface between the upper pressing plate and the lower pressing plate and the main shaft. After the upper pressing plate and the lower pressing plate are engaged with each other, the diameter of the cylindrical space formed by the two semicircular grooves is larger than The shaft diameter of the part to be cooled by the machine tool spindle and the length of the cylindrical space formed by the two semicircular grooves are consistent with the length of the part to be cooled by the machine tool spindle. There is a long strip-shaped recess on each side of the semicircular groove groove. the

The upper platen and the lower platen respectively have two liquid inlets and four liquid outlets, and the liquid inlets are connected to the oil discharge port of the pressure pump through an external pipeline, wherein each liquid inlet passes through the outlet of the pressure plate where it is located. The internal pipeline communicates with the two liquid outlets. the

The two liquid inlets on each of the pressure plates are arranged on the same end face of the pressure plate, and two of the four liquid outlets on each of the pressure plates are symmetrically arranged on the semicircle of the pressure plate. The two ends of the groove, and the two liquid outlets of the same group are symmetrically arranged in the semicircular groove with the axial centerline of the semicircular groove as the symmetry. the

The recovery tray is installed at the bottom of the spindle chamber of the machine tool, directly below the cooling component. The size of the bottom surface of the recovery tray is larger than the projection size of the cooling component on the bottom of the spindle chamber. An oil return hole is provided on the recovery tray, and the oil return hole Connected to the cooling box through the pipeline. the

Description of drawings

Figure 1 is a structural schematic diagram of the utility model machine tool spindle oil injection cooling device. the

Fig. 2 is the structural representation of upper pressing plate and lower pressing plate in the utility model. the

In the figure: 1. cooling box; 2. cooling oil; 3. pressure pump; 4. upper platen; 5. lower platen; 6. liquid inlet; 7. semicircular groove; 8. liquid outlet; 9. length Strip groove; 10. Recovery tray; 11. Oil return hole. the

Detailed ways

The core of the utility model is to provide a machine tool spindle oil injection cooling device used for cooling the machine tool spindle during machine tool processing. the

As shown in accompanying drawing 1 and accompanying drawing 2, the specific implementation of the machine tool spindle oil injection cooling device is: a pressure pump 3 is installed at the bottom of the cooling box 1, and the cooling oil 2 is injected into the cooling box 1, so that the cooling oil 2 is completely submerged The oil outlet of the pressure pump 3 is connected to the liquid inlet 6 of the cooling component through a pipeline to connect the oil outlet of the pressure pump 3 . the

The cooling part is composed of an upper pressing plate 4 and a lower pressing plate 5. There is a semicircular groove 7 in the middle of the contact surface between each pressing plate and the main shaft. The diameter of the formed cylindrical space part is greater than the shaft diameter of the part to be cooled by the machine tool spindle, and the length of the cylindrical space part formed by the two semicircular grooves 7 is consistent with the length of the part to be cooled by the machine tool spindle. Both sides of 7 respectively have an elongated groove 9. During specific installation, the upper pressing plate 4 is fixedly installed above the main shaft that needs to be cooled, and the lower pressing plate 5 is fixedly installed under the main shaft. The two pressing plates are interlocked to contain the cooling part of the machine tool main shaft in two semicircular grooves 7. In this way, without changing any components of the original machine tool, it is very convenient to install the oil injection cooling device for the machine tool spindle; the diameter of the cylindrical space formed by the two semicircular grooves 7 is larger than that of the machine tool spindle to be cooled. part of the shaft diameter, so that the rotation of the main shaft in the cooling part composed of two pressure plates will not be affected in any way; a long groove 9 is opened on both sides of the semicircular groove 7, in order to make the two pressure plates half After cooling the main shaft, the cooling oil ejected from the liquid outlet 8 in the circular groove 7 can flow out from the cylindrical space formed by the two semicircular grooves 7 faster, thereby improving the cooling efficiency. the

Two liquid inlets 6 and four liquid outlets 8 are respectively arranged on the upper platen 4 and the lower platen 5, wherein the two liquid inlets 6 on the same platen are opened on the same end face of the platen where it is located. It is convenient to arrange and fix the pipeline between the liquid inlet 6 and the oil discharge port of the pressure pump 3 during installation. Each liquid inlet 6 communicates with two liquid outlets 8 through the internal pipeline of the platen where it is located, and a group of two liquid outlets among the four liquid outlets on each platen is symmetrically arranged in the semicircular groove 7 of the platen Two ends of the same group, the two liquid outlets of the same group are symmetrically arranged in the semicircular groove 7 with the axial center line of the semicircular groove 7, and the cylindrical space part formed by the two semicircular grooves 7 The length is consistent with the length of the cooling part of the machine tool spindle, so that the cooling oil sprayed from the liquid outlet 8 can be directly sprayed to the high-heat parts near the bearings at both ends of the spindle to achieve a better cooling effect. The design of the upper and lower liquid inlet channels It also makes the device more efficient in conveying coolant, and the corresponding cooling effect is better;

The cooling oil recovery tray 10 is installed at the bottom of the machine tool spindle chamber directly below the cooling component. The bottom surface size of the recovery tray 10 is larger than the projection size of the cooling component at the bottom of the spindle chamber, so that it is easy to recover from between the upper platen 4 and the lower platen 5. The heated cooling oil 2 flowing out prevents the cooling oil 2 from polluting other parts of the main shaft chamber. Finally, the oil return hole 11 on the recovery tray 10 is connected to the cooling box 1 through a pipeline, so that the cooling oil 2 can be recycled to avoid waste.

Claims (5)

1. machine tool chief axis oiling cooling device, the compression pump (3) that comprise cooler bin (1), is arranged on cooler bin (1) bottom and the cold oil recovery pallet (10) that is connected pipeline and is connected with cooler bin (1), it is characterized in that: described compression pump is connected with a cooling-part by pipeline, described cooling-part is comprised of top board (4) and lower platen (5), and two pressing plates fasten mutually wants cooling segment to be included in its inside machine tool chief axis.

2. machine tool chief axis oiling cooling device according to claim 1, it is characterized in that: described top board (4) and lower platen (5) respectively have a semi-circular groove (7) with the positive middle part of main shaft contact-making surface, after top board (4) and lower platen (5) fasten mutually, the diameter of the cylindrical space part that two semi-circular groove (7) consist of is greater than the diameter of axle that machine tool chief axis is wanted cooling segment, the length of the cylindrical space part that two semi-circular groove (7) consist of wants the length of cooling segment consistent with machine tool chief axis, and the both sides of described semi-circular groove (7) respectively have a strip groove (9).

3. machine tool chief axis oiling cooling device according to claim 1, it is characterized in that: two inlets (6) and four liquid outlets (8) are respectively arranged on described top board (4) and the lower platen (5), inlet (6) is connected by the oil drain out of exterior line with compression pump (3), and wherein each inlet (6) is connected with two liquid outlets (8) by the internal duct of place pressing plate.

4. according to claim 2 or machine tool chief axis oiling cooling device claimed in claim 3, it is characterized in that: two inlets (6) on described each pressing plate are arranged on the same end face of pressing plate, one group of two ends that are symmetricly set on the semi-circular groove (7) of pressing plate of two liquid outlets in four liquid outlets (8) on described each pressing plate, and two liquid outlets (6) on the same group with the longitudinal center line of semi-circular groove (7) for being symmetricly set in the semi-circular groove (7).

5. machine tool chief axis oiling cooling device according to claim 1, it is characterized in that: described recovery pallet (10) is installed in the bottom of machine tool chief axis chamber, be positioned at cooling-part under, the bed-plate dimension that reclaims pallet (10) is greater than cooling-part at the projection size of bottom, main shaft chamber, reclaim pallet (10) and be provided with a spill port (11), spill port (11) is connected on the cooler bin (1) by pipeline.

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