Double oil outlet supercharger for main shaft tool breaking

Abstract

The application provides a double-oil-outlet supercharger for main shaft tool changing, which comprises a tool changing cylinder, an electromagnetic valve and an oil cup, the bottom of the tool changing cylinder is connected above a large oil cylinder through an intermediate body, a small oil cylinder is installed on the left side of the intermediate body, the bottom of the large oil cylinder and the small oil cylinder are both installed above a flange, the oil cup is connected to the upper cavity of the large oil cylinder through the large oil cylinder oil inlet of the intermediate body, the small oil cylinder is connected to the upper cavity of the large oil cylinder through the small oil cylinder oil inlet of the intermediate body, the intermediate body is provided with an intermediate body air inlet on the upper cavity of the tool changing cylinder, the flange is provided with a small oil cylinder lower cavity air inlet on the small oil cylinder, a gas pipe is installed between the intermediate body and the flange, and the lower end of the gas pipe is connected to the small oil cylinder lower cavity through the small oil cylinder lower cavity air inlet.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of the main shaft tool breaking device of numerical control machine tool, and particularly relates to a double-oil-outlet pressure booster for main shaft tool breaking. BACKGROUND

[0002] Numerical control machine tools are developing towards high speed, high precision, high efficiency, high intelligence and high automation, and direct connection main shafts are the product of high speed. The direct connection main shafts are provided with a tool changing oil cylinder, and need to provide hydraulic oil with high pressure when changing tools, and only need to provide hydraulic oil with low pressure or compressed air when pulling tools. The pressure booster can meet the requirements of tool changing of the direct connection main shaft: the pressure booster can convert air pressure with low pressure into hydraulic pressure with high pressure.

[0003] At present, the pressure booster for controlling the tool changing oil cylinder of the direct connection main shaft provides hydraulic oil with high pressure when changing tools, and can only provide compressed air with low pressure when pulling tools; the compressed air provided by many manufacturers has not completely filtered water, so that the tool changing oil cylinder of the direct connection main shaft will be rusted after a period of use, the sealing ring of the tool changing oil cylinder is damaged, the tool changing oil cylinder has the phenomena of oil leakage and air leakage, and finally the tool changing of the machine tool is affected.

[0004] In order to solve the problem, a double-oil-outlet pressure booster for main shaft tool breaking is designed and developed: hydraulic oil with high pressure is provided when changing tools, and hydraulic oil with low pressure is provided when pulling tools; so that the tool changing oil cylinder of the direct connection main shaft will not be rusted. SUMMARY

[0005] The application solves the problems that the existing direct connection main shaft adopts air pressure when breaking tools, the pressure is not enough, adopts air pressure when pulling tools, the air source contains water, and the inside of the oil cylinder of the direct connection main shaft is easily rusted by water vapor, and provides a double-oil-outlet pressure booster for main shaft tool breaking.

[0006] The technical scheme adopted by the application to solve the technical problems is:

[0007] The utility model provides a double oil outlet pressure intensifier for main shaft tool breaking, including tool breaking cylinder, solenoid valve and oil cup, the oil cup is installed in tool breaking cylinder rear side, solenoden valve is installed in tool breaking cylinder right side, solenoden valve top passes through the air passage of cylinder upper chamber and reaches tool breaking cylinder upper chamber, solenoden valve below passes through the air passage of cylinder lower chamber and reaches tool breaking cylinder lower chamber, the movable mounting of cylinder piston piece is installed in tool breaking cylinder, piston rod is installed in cylinder piston piece below, piston rod extends downward when doing piston movement, the bottom of tool breaking cylinder is connected above big oil cylinder through intermediate body, the piston hole is opened on the intermediate body, piston rod moves to big oil cylinder inner cavity through piston hole, small oil cylinder is installed in the left side of intermediate body, the bottom of big oil cylinder and small oil cylinder is installed above flange, the oil cup is connected to big oil cylinder upper chamber through big oil cylinder oil inlet in intermediate body, small oil cylinder is connected to big oil cylinder upper chamber through small oil cylinder oil inlet in intermediate body, tool breaking oil outlet right side of big oil cylinder is connected to tool breaking oil inlet of main shaft tool breaking oil cylinder, the tool breaking oil outlet left side above small oil cylinder is connected to tool breaking oil inlet of main shaft tool breaking oil cylinder, the air passage of intermediate body is opened on tool breaking cylinder lower chamber, the air passage of flange is opened on small oil cylinder lower chamber, the air pipe is installed between intermediate body below and flange, the upper end of air pipe leads to the air passage of intermediate body, and the lower end leads to small oil cylinder lower chamber through the air passage of small oil cylinder lower chamber.

[0008] Preferably, the stepped hole is opened on the small oil cylinder upper cover, the diameter of the upper hole is smaller than that of the lower hole, the upper hole is connected to the small oil cylinder oil inlet, the compression spring is installed in the upper hole, the first sealing ring is installed in the lower hole, and the compression spring and the sealing ring are installed in the stepped hole through the gland.

[0009] Preferably, the second sealing ring is embedded on the inner wall of the piston hole.

[0010] Preferably, two third sealing rings are embedded on the inner wall of the piston hole, and the two third sealing rings are below the second sealing ring.

[0011] Preferably, the inner ring groove is opened on the inner wall of the piston hole, the inner ring groove is between the two third sealing rings, and the inner ring groove is connected to the small oil cylinder oil inlet, the big oil cylinder oil inlet and the oil cup.

[0012] Preferably, the two third sealing rings are V-shaped sealing rings, and the V-shaped openings are downwardly installed.

[0013] Preferably, the first sealing ring is a bowl-shaped sealing ring.

[0014] Preferably, the air hole is opened on the oil cup, and the air hole is connected to the oil cup upper chamber.

[0015] Compared with the prior art, the present application has the beneficial effects that: the present application installs a small oil cylinder on the side of a large oil cylinder, and the straight connection main shaft of the punch and the broach are powered by the hydraulic pressure controlled by the electromagnetic valve, the hydraulic oil has great pressure, stable pressure and good continuity; the hydraulic oil can be automatically replenished by the oil cup during the punching and broaching, avoiding power interruption; and the large oil cylinder, the small oil cylinder and the oil cup are connected through the intermediate body, the air in the oil cavity during the punching and broaching can be conducted to the oil cup through the oil port, and discharged through the air vent on the oil cup, ensuring the power quality of the punching and broaching. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in combination with the drawings and examples.

[0017] Figure 1 The figure is a structural schematic diagram of the embodiment of the present application;

[0018] Figure 2 The figure is a top view of the embodiment of the present application;

[0019] Figure 3 The figure is a structural schematic diagram of the embodiment of the present application in the punching state;

[0020] Figure 4 The figure is a structural schematic diagram of the embodiment of the present application in the broaching state;

[0021] Figure 5 The figure is a side view of the embodiment of the present application in the broaching state;

[0022] The embodiment of the present application mainly comprises the following element symbols:

[0023] Punching cylinder-1, cylinder upper cavity air vent-101, cylinder lower cavity air vent-102, cylinder piston sheet-110, piston rod-111, electromagnetic valve-2, oil cup-3, air vent-301, intermediate body-4, piston hole-401, second sealing ring-410, third sealing ring-411, inner ring groove-412, intermediate body air vent-420, large oil cylinder-5, large oil cylinder oil port-501, punching oil outlet-502, small oil cylinder-6, small oil cylinder oil port-601, broaching oil outlet-602, small oil cylinder lower cavity air vent-603, stepped hole-610, compression spring-611, first sealing ring-612, gland-613, flange-7, air pipe-8. DETAILED DESCRIPTION

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] Example 1

[0026] like Figures 1 to 3 As shown, a dual-outlet oil booster for spindle tool removal includes a tool removal cylinder 1, a solenoid valve 2, and an oil cup 3. The oil cup 3 is installed on the rear side of the tool removal cylinder 1, and the solenoid valve 2 is installed on the right side of the tool removal cylinder 1. The solenoid valve 2 is connected to the upper cavity of the tool removal cylinder 1 through a cylinder upper cavity air port 101 above it, and to the lower cavity of the tool removal cylinder 1 through a cylinder lower cavity air port 102 below it. A cylinder piston plate 110 is movably installed inside the tool removal cylinder 1, and a piston rod 111 is installed below the cylinder piston plate 110. The piston rod 111 extends downward when performing piston movement. The bottom of the tool removal cylinder 1 is connected to the upper part of a large oil cylinder 5 through an intermediate body 4. A piston hole 401 is opened on the intermediate body 4, and the piston rod 111 passes through the piston hole 401 and moves into the inner cavity of the large oil cylinder 5. A small oil cylinder 6 is installed on the left side of the intermediate body 4. Both the large hydraulic cylinder 5 and the small hydraulic cylinder 6 are mounted on the flange 7 at their bottoms. The oil cup 3 is connected to the upper cavity of the large hydraulic cylinder 5 through the large hydraulic cylinder oil inlet 501 in the intermediate body 4. The small hydraulic cylinder 6 is connected to the upper cavity of the large hydraulic cylinder 5 through the small hydraulic cylinder oil inlet 601 in the intermediate body 4. The tool-cutting oil outlet 502 on the right side of the large hydraulic cylinder 5 is connected to the tool-cutting oil inlet of the spindle tool-cutting cylinder. The tool-drawing oil outlet 602 on the upper left side of the small hydraulic cylinder 6 is connected to the tool-drawing oil inlet of the spindle tool-cutting cylinder. The intermediate body 4 is also provided with an intermediate body air vent 420 on the lower cavity of the tool-cutting cylinder 1. The flange 7 is provided with a small hydraulic cylinder lower cavity air vent 603 at the location of the small hydraulic cylinder 6. An air pipe 8 is also installed between the lower part of the intermediate body 4 and the flange 7. The upper end of the air pipe 8 leads to the intermediate body air vent 420, and the lower end leads to the lower cavity of the small hydraulic cylinder 6 through the small hydraulic cylinder lower cavity air vent 603.

[0027] The present application installs small oil cylinder 6 on one side of large oil cylinder 5, and the direct connection main shaft of the punch and the broach are powered by the hydraulic pressure controlled by electromagnetic valve 2, the hydraulic oil pressure is large, the pressure is stable, and the continuity is good; the hydraulic oil required by the punch and the broach can be automatically replenished through oil cup 3, so as to avoid power interruption; and large oil cylinder 5, small oil cylinder 6 and oil cup 3 are communicated through intermediate body 4, the air in the oil cavity during the punch and the broach can be conducted to oil cup 3 through the oil port, and discharged through the air hole 301 above oil cup 3, so as to ensure the power quality of the punch and the broach.

[0028] The upper cavity of the small oil cylinder 6 is provided with a stepped hole 610 at the upper cover of the small oil cylinder 6, the diameter of the upper hole of the stepped hole 610 is smaller than that of the lower hole, the upper hole of the stepped hole 610 is communicated with the oil port 601 of the small oil cylinder, a compression spring 611 is installed in the upper hole of the stepped hole 610, a first sealing ring 612 is installed in the lower hole of the stepped hole 610, and a gland 613 is fixedly connected to the lower hole of the stepped hole 610.

[0029] The second sealing ring 410 is embedded and installed on the inner wall of the piston hole 401.

[0030] Two third sealing rings 411 are also embedded and installed on the inner wall of the piston hole 401, and the two third sealing rings 411 are located below the second sealing ring 410.

[0031] An inner ring groove 412 is also formed on the inner wall of the piston hole 401, the inner ring groove 412 is located between the two third sealing rings 411, and the side surface of the inner ring groove 412 is communicated with the oil port 601 of the small oil cylinder, the oil port 501 of the large oil cylinder and the oil cup 3.

[0032] The two third sealing rings 411 are V-shaped sealing rings, and the V-shaped openings are downwardly installed.

[0033] The first sealing ring 612 is a bowl-shaped sealing ring.

[0034] The air hole 301 is formed on the upper part of the oil cup 3, and the air hole 301 is communicated with the upper cavity of the oil cup 3.

[0035] The working principle of the present application is that the air inlet of the booster is connected to compressed air, the punch oil outlet 502 is connected to the punch oil inlet of the main shaft punch cylinder, and the broach oil outlet 602 is connected to the broach oil inlet of the main shaft punch cylinder.

[0036] When the tool is removed, the electromagnetic valve 2 is powered, and the compressed air enters the upper chamber of the tool removal cylinder 1 through the upper chamber air inlet 101 of the cylinder, and the compressed air pushes the cylinder piston sheet 110, and the air pressure on the cylinder piston sheet 110 is transmitted to the piston rod 111, so that the piston rod 111 generates a large pressure. According to "Pascal's law", the piston rod 111 enters the large oil cylinder 5 chamber, which will cause the hydraulic oil in the large oil cylinder 5 chamber to generate a large pressure. The hydraulic oil with a large pressure enters the tool removal oil chamber of the main shaft tool removal oil cylinder through the tool removal oil outlet 502, so that the main shaft tool removal is realized.

[0037] When the hydraulic oil with a large pressure enters the tool removal oil chamber of the main shaft tool removal oil cylinder through the tool removal oil outlet 502, the hydraulic oil in the broach oil chamber of the main shaft tool removal oil cylinder will enter the upper chamber of the small oil cylinder 6 through the broach oil outlet 602. The upper chamber of the small oil cylinder 6 is in a state without oil pressure, and the compressed spring 611 pushes the first sealing ring 612 to move downward to the gland 613, so that the upper chamber of the small oil cylinder 6 is connected with the oil cup 3 through the small oil cylinder oil inlet 601. At this time, the air in the upper chamber of the oil cylinder will be discharged from the oil cup 3 through the small oil cylinder oil inlet 601, and the hydraulic oil in the oil cup 3 will enter the upper chamber of the small oil cylinder 6 through the small oil cylinder oil inlet 601, so that the upper chamber of the small oil cylinder 6 is always in a state of all hydraulic oil.

[0038] As shown in Figure 4 and Figure 5 When the broach is removed, the electromagnetic valve 2 is de-energized, the compressed air enters the lower chamber of the tool removal cylinder 1 through the lower chamber air inlet 102 of the cylinder, and the compressed air pushes the cylinder piston sheet 110 to move upward, and the cylinder piston sheet 110 drives the piston rod 111 to move upward together, so that the large oil cylinder 5 chamber is connected with the oil cup 3 through the large oil cylinder oil inlet 501. At this time, the air in the large oil cylinder 5 chamber will be discharged from the oil cup 3 through the large oil cylinder oil inlet 501, and the hydraulic oil in the oil cup 3 will enter the large oil cylinder 5 chamber through the large oil cylinder oil inlet 501, so that the large oil cylinder 5 chamber is always in a state of all hydraulic oil.

[0039] The compressed air entering the lower chamber of the tool removal cylinder 1 enters the lower chamber of the small oil cylinder 6 through the intermediate body air inlet 420 and the lower chamber air inlet 603 of the small oil cylinder, and the compressed air pushes the piston of the small oil cylinder 6 to move upward. The hydraulic oil in the upper chamber of the small oil cylinder 6 has the same pressure as the compressed air in the lower chamber of the small oil cylinder 6, and the hydraulic oil in the upper chamber of the small oil cylinder 6 pushes the first sealing ring 612 to move upward, so that the small oil cylinder oil inlet 601 is closed, and the upper chamber of the small oil cylinder 6 is disconnected with the oil cup 3. The hydraulic oil in the upper chamber of the small oil cylinder 6 will enter the broach oil chamber of the main shaft tool removal oil cylinder through the broach oil outlet 602, so that the main shaft broach is realized.

[0040] With the above ideal embodiments according to the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A dual-outlet oil booster for spindle tool removal, comprising a tool removal cylinder (1), a solenoid valve (2), and an oil cup (3), wherein the oil cup (3) is installed on the rear side of the tool removal cylinder (1), the solenoid valve (2) is installed on the right side of the tool removal cylinder (1), the upper part of the solenoid valve (2) is connected to the upper chamber of the tool removal cylinder (1) through the upper chamber air inlet (101), and the lower part of the solenoid valve (2) is connected to the lower chamber of the tool removal cylinder (1) through the lower chamber air inlet (102), a cylinder piston plate (110) is movably installed inside the tool removal cylinder (1), and a piston rod (111) is installed below the cylinder piston plate (110), the piston rod (111) extending downward when performing piston movement, characterized in that: The bottom of the cutting cylinder (1) is connected to the upper part of the large oil cylinder (5) through an intermediate body (4). The intermediate body (4) has a piston hole (401). The piston rod (111) passes through the piston hole (401) and moves into the inner cavity of the large oil cylinder (5). A small oil cylinder (6) is installed on the left side of the intermediate body (4). The bottoms of the large oil cylinder (5) and the small oil cylinder (6) are both installed above the flange (7). The oil cup (3) passes through the oil inlet (501) of the large oil cylinder in the intermediate body (4) to the upper cavity of the large oil cylinder (5). The small oil cylinder (6) passes through... The small oil cylinder inlet (601) inside the intermediate body (4) extends to the upper cavity of the large oil cylinder (5). The tool-breaking oil outlet (502) on the right side of the large oil cylinder (5) is connected to the tool-breaking oil inlet of the spindle tool-breaking oil cylinder. The tool-drawing oil outlet (602) on the upper left side of the small oil cylinder (6) is connected to the tool-drawing oil inlet of the spindle tool-breaking oil cylinder. The intermediate body (4) also has an intermediate body vent (420) on the lower cavity of the tool-breaking cylinder (1). The flange (7) has a small oil cylinder lower cavity vent (603) at the small oil cylinder (6). The intermediate body (4) is located below... An air pipe (8) is also installed between the square and the flange (7). The upper end of the air pipe (8) leads to the air inlet (420) of the intermediate body, and the lower end leads to the lower cavity of the small oil cylinder (6) through the air inlet (603) of the lower cavity of the small oil cylinder. The upper cavity of the small oil cylinder (6) has a stepped hole (610) at the top cover of the small oil cylinder (6). The diameter of the hole above the stepped hole (610) is smaller than the diameter of the hole below. The upper part of the stepped hole (610) is connected to the oil inlet (601) of the small oil cylinder. A compression spring (611) is installed in the hole above the stepped hole (610). A first sealing ring (612) is installed in the hole below the stepped hole (610). A pressure cap (613) is fixed to the bottom of the stepped hole (610) by bolts. The compression spring (611) and the first sealing ring (612) are installed in the stepped hole (610) through the pressure cap (613). The first sealing ring (612) is a bowl-shaped sealing ring. A vent hole (301) is opened above the oil cup (3). The vent hole (301) is connected to the upper cavity of the oil cup (3). The first sealing ring (612) can seal the oil inlet (601) of the small oil cylinder.

2. The dual-outlet intensifier according to claim 1, characterized in that: A second sealing ring (410) is embedded in the inner wall of the piston hole (401).

3. The dual-outlet intensifier according to claim 2, characterized in that: Two third sealing rings (411) are also embedded in the inner wall of the piston hole (401), and both third sealing rings (411) are located below the second sealing ring (410).

4. The dual-outlet intensifier according to claim 3, characterized in that: The piston hole (401) also has an inner ring groove (412) on its inner wall. The inner ring groove (412) is located between two third sealing rings (411). The side of the inner ring groove (412) is connected to the small oil cylinder oil inlet (601) and the large oil cylinder oil inlet (501).

5. The dual-outlet intensifier according to claim 4, characterized in that: The two third sealing rings (411) are V-shaped sealing rings with the V-shaped openings facing downwards.

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