Lubricating and hydraulic control system and cylindrical grinding machine

Abstract

The utility model discloses a lubrication and hydraulic control system and a cylindrical grinding machine. The lubrication and hydraulic control system comprises a lubrication system, the lubrication system comprises a lubrication oil tank and a lubrication oil way, the lubrication oil way is communicated with the lubrication oil tank, and the lubrication oil tank supplies oil to the lubrication oil way; the hydraulic system comprises a hydraulic oil tank and a hydraulic oil way, the hydraulic oil way is communicated with the hydraulic oil tank, and the hydraulic oil tank supplies oil to the hydraulic oil way; the lubricating oil tank and the hydraulic oil tank are mutually independent, the lubricating oil way and the hydraulic oil way are mutually independent, lubricating oil circulates in the lubricating oil tank and the lubricating oil way, and hydraulic oil circulates in the hydraulic oil tank and the lubricating oil way. According to the lubricating and hydraulic control system, the lubricating system and the hydraulic system are separated, the lubricating oil tank and the hydraulic oil tank are mutually independent, the lubricating oil way and the hydraulic oil way are mutually independent, it is ensured that solid-liquid impurities mixed in lubricating oil cannot enter the hydraulic oil tank to pollute hydraulic oil, and therefore the replacement rate of the hydraulic oil is reduced; the service life of hydraulic oil is prolonged and the oil cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding machines, in particular to a lubrication and hydraulic control system and a cylindrical grinding machine. Background Art

[0002] CNC cylindrical grinding machine is a kind of high-precision surface precision machine tool with emphasis on coordination. It has high machining accuracy and good parallelism, and can accurately make the outer circle size of the workpiece into the required size.

[0003] CNC cylindrical grinding machine belongs to the rotary bed system, with a hydraulic oil tank at the bottom of the base, the spindle moves along the axial direction, and the drive moves along the axial direction. It is a typical representative of automatic machine tools. Its characteristics are high cutting speed, many processing axes, wide radial processing axes, large cutting quality, high processing accuracy and fast processing speed.

[0004] On the CNC cylindrical grinder, the function of the bottom hydraulic oil tank is to provide the hydraulic energy required by the machine tool and the lubrication of the moving parts. The hydraulic pressure of the bottom hydraulic oil tank is supplied by the hydraulic oil pump. The hydraulic oil is pumped out of the hydraulic oil tank by the hydraulic oil pump. The infusion volume of the hydraulic oil tank is controlled by the hydraulic oil pump.

[0005] In daily production, due to insufficient sealing of the machine tool, the machine tool coolant enters the hydraulic oil tank at the bottom, causing the hydraulic oil to emulsify, thereby causing damage to the hydraulic components, insufficient oil supply to the moving parts, and unstable size of the processed parts.

[0006] Every time the hydraulic oil deteriorates, the hydraulic oil in the bottom hydraulic oil tank must be completely replaced, and then the bottom hydraulic oil tank must be cleaned, the hydraulic components must be cleaned, the moving parts must be cleaned, and then new lubricating oil must be refilled, which results in a shortened service life of the oil and a higher replacement cost. Utility Model Content

[0007] In view of this, the utility model proposes a lubrication and hydraulic control system and a cylindrical grinder, which can reduce the replacement rate of hydraulic oil, increase the service life of hydraulic oil, and reduce the oil cost.

[0008] According to an embodiment of the utility model, a lubrication and hydraulic control system is provided, including a lubrication system, the lubrication system including a lubrication oil tank and a lubrication oil circuit, the lubrication oil circuit is connected to the lubrication oil tank and supplied with oil by the lubrication oil tank; a hydraulic system including a hydraulic oil tank and a hydraulic oil circuit, the hydraulic oil circuit is connected to the hydraulic oil tank and supplied with oil by the hydraulic oil tank; the lubrication oil tank and the hydraulic oil tank are independent of each other, the lubrication oil circuit and the hydraulic oil circuit are independent of each other, lubrication oil circulates in the lubrication oil tank and the lubrication oil circuit, and hydraulic oil circulates in the hydraulic oil tank and the lubrication oil circuit.

[0009] In a preferred embodiment, the lubricating oil circuit includes an X-axis lubricating branch and a Y-axis lubricating branch, and the X-axis lubricating branch and the Y-axis lubricating branch are connected in parallel.

[0010] In a preferred embodiment, the lubricating oil circuit includes a lubricating oil pump and a volumetric oil separator. The lubricating oil pump is arranged at the outlet of the lubricating oil tank, and the volumetric oil separator is arranged at the end of the lubricating oil circuit.

[0011] In a preferred embodiment, a filter screen is disposed in the lubricating oil tank, and the lubricating oil path passes through the filter screen and extends into the bottom of the lubricating oil tank.

[0012] In a preferred embodiment, the filter net includes a net body and at least one filter cartridge disposed on the net body, the filter cartridge protrudes upward from the net body, and the cartridge wall of the filter cartridge forms a filter structure.

[0013] In a preferred embodiment, the filter screen is concave, the filter cartridge is arranged at the maximum concave position of the filter screen, and the height of the filter cartridge is higher than the maximum height of the filter screen.

[0014] In a preferred embodiment, the hydraulic oil circuit includes a hydraulic oil pump and a plurality of hydraulic branches arranged at the outlet of the hydraulic oil pump, and the plurality of hydraulic branches are connected in parallel.

[0015] In a preferred embodiment, the outlet of the hydraulic oil pump is provided with a one-way valve to prevent the hydraulic oil from flowing back to the hydraulic oil pump.

[0016] In a preferred embodiment, a single hydraulic branch circuit includes a hydraulic cylinder, a reversing valve and a relief valve. The reversing valve controls the extension and retraction of the hydraulic cylinder. The relief valve opens to release pressure when the hydraulic oil pressure in the hydraulic branch circuit reaches a preset pressure.

[0017] According to another aspect of the utility model, a cylindrical grinding machine is provided, including a bed and a lubrication and hydraulic control system, the lubrication and hydraulic control system is the above-mentioned lubrication and hydraulic control system, the lubrication oil tank is arranged on the lower side of the bed, and the hydraulic oil tank is arranged on the outside of the bed.

[0018] It can be seen from the above scheme that the lubrication and hydraulic control system proposed by the utility model includes: a lubrication system, the lubrication system includes a lubrication oil tank and a lubrication oil circuit, the lubrication oil circuit is connected to the lubrication oil tank and supplied with oil by the lubrication oil tank; a hydraulic system, including a hydraulic oil tank and a hydraulic oil circuit, the hydraulic oil circuit is connected to the hydraulic oil tank and supplied with oil by the hydraulic oil tank; the lubrication oil tank and the hydraulic oil tank are independent of each other, the lubrication oil circuit and the hydraulic oil circuit are independent of each other, the lubrication oil tank and the lubrication oil circuit circulate lubrication oil, and the hydraulic oil tank and the lubrication oil circuit circulate hydraulic oil. In order to avoid the problem that solid and liquid impurities such as machine tool coolant and metal debris enter the hydraulic oil tank and cause the hydraulic oil to deteriorate, resulting in a reduction in the service life of the oil and a high replacement cost, the lubrication system is separated from the hydraulic system, the lubrication oil tank and the hydraulic oil tank are independent of each other, the lubrication oil circuit and the hydraulic oil circuit are also independent of each other, and it is ensured that the solid and liquid impurities mixed in the lubrication oil cannot enter the hydraulic oil tank to pollute the hydraulic oil, thereby reducing the replacement rate of the hydraulic oil, increasing the service life of the hydraulic oil, and reducing the cost of the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art will be more aware of the above and other features and advantages of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of a lubrication and hydraulic control system according to the utility model;

[0021] Figure 2 It is a structural schematic diagram of a lubrication system of a lubrication and hydraulic control system according to the utility model;

[0022] Figure 3 It is a structural schematic diagram of a lubricating oil tank of a lubrication and hydraulic control system according to the utility model;

[0023] Figure 4 It is a structural schematic diagram of the filter screen of the lubrication and hydraulic control system according to the utility model;

[0024] Figure 5 is another structural schematic diagram of the filter screen of the lubrication and hydraulic control system according to the utility model; and

[0025] Figure 6 It is a structural schematic diagram of the hydraulic oil circuit of the lubrication and hydraulic control system according to the utility model.

[0026] In the above drawings, the reference numerals used are as follows:

[0027] 1. Lubricating oil tank; 2. Lubricating oil circuit; 3. Hydraulic oil tank; 4. Hydraulic oil circuit; 5. X-axis lubricating branch; 6. Y-axis lubricating branch; 7. Positive displacement oil separator; 8. Filter screen; 81. Mesh body; 82. Filter cartridge; 9. Hydraulic oil pump; 10. Hydraulic branch; 11. Check valve; 12. Hydraulic cylinder; 13. Reversing valve; 14. Overflow valve; 15. Bed. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the following embodiments.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0031] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0032] like Figures 1 to 6 As shown, according to an embodiment of the utility model, the lubrication and hydraulic control system includes:

[0033] A lubrication system, the lubrication system comprises a lubrication oil tank 1 and a lubrication oil circuit 2, the lubrication oil circuit 2 is connected to the lubrication oil tank 1 and is supplied with oil by the lubrication oil tank 1;

[0034] A hydraulic system, comprising a hydraulic oil tank 3 and a hydraulic oil circuit 4, wherein the hydraulic oil circuit 4 is connected to the hydraulic oil tank 3 and supplied with oil by the hydraulic oil tank 3;

[0035] The lubricating oil tank 1 and the hydraulic oil tank 3 are independent of each other, the lubricating oil circuit 2 and the hydraulic oil circuit 4 are independent of each other, the lubricating oil tank 1 and the lubricating oil circuit 2 circulate lubricating oil, and the hydraulic oil tank 3 and the lubricating oil circuit 2 circulate hydraulic oil.

[0036] In this embodiment, the lubricating oil tank 1 supplies lubricating oil to the moving parts that need lubrication through the lubricating oil circuit 2 connected thereto, and lubricates the moving parts. The hydraulic oil tank 3 supplies hydraulic oil to the actuator driven by the hydraulic cylinder through the hydraulic oil circuit 4 connected thereto, so as to drive the actuator to move. In order to avoid solid and liquid impurities such as machine tool coolant and metal debris entering the hydraulic oil tank 3 and causing the hydraulic oil to deteriorate, resulting in a shortened service life of the oil and a high replacement cost, the lubrication system is separated from the hydraulic system, the lubricating oil tank 1 and the hydraulic oil tank 3 are independent of each other, and the lubricating oil circuit 2 and the hydraulic oil circuit 4 are also independent of each other, ensuring that solid and liquid impurities mixed in the lubricating oil cannot enter the hydraulic oil tank 3 to contaminate the hydraulic oil, thereby reducing the replacement rate of the hydraulic oil, increasing the service life of the hydraulic oil, and reducing the oil cost.

[0037] In one embodiment, the lubricating oil circuit 2 includes an X-axis lubricating branch circuit 5 and a Y-axis lubricating branch circuit 6, and the X-axis lubricating branch circuit 5 and the Y-axis lubricating branch circuit 6 are connected in parallel.

[0038] In this embodiment, the X-axis lubrication branch 5 transmits the lubricating oil to the moving parts of the machine tool in the X-axis direction to lubricate the moving parts of the machine tool in the X-axis direction. The Y-axis lubrication branch 6 transmits the lubricating oil to the moving parts of the machine tool in the Y-axis direction to lubricate the moving parts of the machine tool in the Y-axis direction. The X-axis lubrication branch 5 and the Y-axis lubrication branch 6 are connected in parallel to realize simultaneous oil supply to the moving parts in the X-axis and Y-axis directions of the machine tool.

[0039] In one embodiment, the lubricating oil circuit 2 includes a lubricating oil pump and a volumetric oil separator 7 . The lubricating oil pump is disposed at the outlet of the lubricating oil tank 1 , and the volumetric oil separator 7 is disposed at the end of the lubricating oil circuit 2 .

[0040] In this embodiment, the lubricating oil pump pumps the lubricating oil into the lubricating oil circuit 2 in the lubricating oil tank 1, and the lubricating oil is transmitted to the volumetric oil separator 7 at the end of the lubricating oil circuit 2 via the lubricating oil circuit 2. The lubricating oil is pressed out of the volumetric oil separator 7 to the moving parts to be lubricated by the pressure in the lubricating oil circuit 2, and the moving parts to be lubricated are lubricated. The volumetric oil separator 7 has a relatively simple mechanical structure, stable and reliable performance, and low maintenance and replacement costs.

[0041] In one embodiment, a filter screen 8 is disposed in the lubricating oil tank 1 , and the lubricating oil path 2 passes through the filter screen 8 and extends into the bottom of the lubricating oil tank 1 .

[0042] In this embodiment, the filter 8 filters the lubricating oil that flows back into the lubricating oil tank 1 from the moving parts, removes solid impurities such as metal debris contained in the returned lubricating oil, improves the cleanliness of the lubricating oil, enables the lubricating oil to be reused, reduces the lubricating oil replacement cycle, and thus reduces costs. The lubricating oil path 2 passes through the filter 8 and extends into the bottom of the lubricating oil tank 1, and the lubricating oil is extracted from the bottom of the lubricating oil tank 1, thereby isolating the solid impurities on the top of the filter 8 from the lubricating oil path 2, thereby ensuring that the lubricating oil entering the lubricating oil path 2 has good lubrication properties.

[0043] In one embodiment, the filter screen 8 includes a mesh body 81 and at least one filter cartridge 82 disposed on the mesh body 81 . The filter cartridge 82 protrudes upward from the mesh body 81 , and the cartridge wall of the filter cartridge 82 forms a filtering structure.

[0044] In the present embodiment, solid impurities such as metal debris filtered out by the filter 8 from the returning lubricating oil accumulate on the surface of the filter 8, which may clog the filter 8 during long-term use, thereby preventing the lubricating oil from flowing into the lubricating oil tank 1. By providing at least one filter cartridge 82 protruding upward on the mesh body 81, solid impurities can be prevented from entering the filter mesh area surrounded by the filter cartridge 82 and being clogged, thereby ensuring that even if the mesh body 81 located outside the filter cartridge 82 is clogged, the lubricating oil can be filtered through the side wall of the filter cartridge 82 and flow into the lubricating oil tank 1, thereby further extending the service life of the filter and reducing the cleaning frequency of the filter 8.

[0045] In one embodiment, the filter screen 8 is concave, and the filter cartridge 82 is disposed at the maximum concave position of the filter screen 8 . The height of the filter cartridge 82 is higher than the maximum height of the filter screen 8 .

[0046] In this embodiment, the filter screen 8 is recessed, and the filter cartridge 82 is arranged at the maximum recessed position of the filter screen 8, which makes it easier for the lubricating oil to gather at the position of the filter cartridge 82, improves the flow efficiency of the lubricating oil, and further reduces the possibility that the filter screen 8 is completely blocked and the lubricating oil cannot flow back. The height of the filter cartridge 82 is higher than the maximum height of the filter screen 8, which avoids the situation where the filter screen 8 is blocked and the unfiltered lubricating oil accumulates on the mesh body 81 and reaches the upper edge of the filter cartridge 82, and falls into the lubricating oil tank 1 from the upper end opening of the filter cartridge 82 to pollute the lubricating oil in the tank.

[0047] In one embodiment, the hydraulic oil circuit 4 includes a hydraulic oil pump 9 and a plurality of hydraulic branches 10 disposed at the outlet of the hydraulic oil pump 9 , and the plurality of hydraulic branches 10 are connected in parallel.

[0048] In this embodiment, the hydraulic oil pump 9 is connected to hydraulic actuators such as the hydraulic tailstock and the measuring instrument through the hydraulic branch 10. The hydraulic oil pump 9 pumps the hydraulic oil into multiple hydraulic branches 10 in the hydraulic oil tank 3 to supply hydraulic energy to each hydraulic actuator, thereby driving the actuator at the end of the hydraulic branch 10 to complete the action. Multiple hydraulic branches 10 are connected in parallel, so that one hydraulic oil pump 9 can supply hydraulic oil to the actuators on multiple hydraulic branches 10 at the same time.

[0049] In one embodiment, the outlet of the hydraulic oil pump 9 is provided with a one-way valve 11 to prevent the hydraulic oil from flowing back to the hydraulic oil pump 9 .

[0050] In this embodiment, a one-way valve 11 is disposed at the outlet of the hydraulic oil pump 9 to prevent the hydraulic oil from flowing back to the hydraulic oil pump 9 .

[0051] In one embodiment, a single hydraulic branch circuit 10 includes a hydraulic cylinder 12, a reversing valve 13 and a relief valve 14. The reversing valve 13 controls the extension and retraction of the hydraulic cylinder 12. The relief valve 14 opens to release pressure when the hydraulic oil pressure in the hydraulic branch circuit 10 reaches a preset pressure.

[0052] In this embodiment, the reversing valve 13 controls the delivery direction of the hydraulic oil in a single hydraulic branch 10, thereby controlling the hydraulic cylinder 12 to achieve telescopic movement. The telescopic movement of the hydraulic cylinder 12 drives the actuator to complete the action. The overflow valve 14 opens to release the pressure when the hydraulic oil pressure in the hydraulic branch 10 reaches a preset pressure, thereby effectively protecting the hydraulic branch 10.

[0053] According to another aspect of the utility model, a cylindrical grinding machine is provided, including a bed 15 and a lubrication and hydraulic control system, which is the above-mentioned lubrication and hydraulic control system, the lubrication oil tank 1 is arranged on the lower side of the bed 15, and the hydraulic oil tank 3 is arranged on the outside of the bed 15.

[0054] In this embodiment, the lubricating oil tank 1 is arranged on the lower side of the bed 15, and the hydraulic oil tank 3 is arranged on the outside of the machine tool. The lubricating oil tank 1 is separated from the hydraulic oil tank 3 to prevent solid and liquid impurities mixed in the lubricating oil from entering the hydraulic oil tank 3 and causing pollution to the hydraulic oil. At the same time, the lubricating oil tank 1 is arranged on the lower side of the bed 15, which is convenient for recovering the lubricating oil and improving the efficiency of using the lubricating oil. It is also convenient to clean the impurities filtered out from the filter net in the lubricating oil tank 1 and replace the lubricating oil.

[0055] It can be seen from the above scheme that according to the lubrication and hydraulic control system proposed by the utility model, the lubricating oil tank 1 supplies lubricating oil to the moving parts that need lubrication through the lubricating oil circuit 2 connected thereto, so as to lubricate the moving parts, and the hydraulic oil tank 3 supplies hydraulic oil to the actuator driven by the hydraulic cylinder through the hydraulic oil circuit 4 connected thereto, so as to drive the actuator to move. In order to avoid the problem that solid and liquid impurities such as machine tool coolant and metal debris enter the hydraulic oil tank 3 and cause the hydraulic oil to deteriorate, resulting in a shortened service life of the oil and a higher replacement cost, the lubrication system is separated from the hydraulic system, the lubricating oil tank 1 and the hydraulic oil tank 3 are independent of each other, and the lubricating oil circuit 2 and the hydraulic oil circuit 4 are also independent of each other, ensuring that solid and liquid impurities mixed in the lubricating oil cannot enter the hydraulic oil tank 3 to pollute the hydraulic oil, thereby reducing the replacement rate of the hydraulic oil, increasing the service life of the hydraulic oil, and reducing the oil cost.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lubrication and hydraulic control system, characterized in that: include: A lubrication system comprises a lubrication oil tank (1) and a lubrication oil circuit (2), wherein the lubrication oil circuit (2) is connected to the lubrication oil tank (1) and is supplied with oil by the lubrication oil tank (1); A hydraulic system comprises a hydraulic oil tank (3) and a hydraulic oil circuit (4), wherein the hydraulic oil circuit (4) is connected to the hydraulic oil tank (3) and is supplied with oil by the hydraulic oil tank (3); The lubricating oil tank (1) and the hydraulic oil tank (3) are independent of each other, the lubricating oil circuit (2) and the hydraulic oil circuit (4) are independent of each other, lubricating oil circulates in the lubricating oil tank (1) and the lubricating oil circuit (2), and hydraulic oil circulates in the hydraulic oil tank (3) and the lubricating oil circuit (2).

2. The lubrication and hydraulic control system according to claim 1, characterized in that: The lubricating oil circuit (2) comprises an X-axis lubricating branch circuit (5) and a Y-axis lubricating branch circuit (6), and the X-axis lubricating branch circuit (5) and the Y-axis lubricating branch circuit (6) are connected in parallel.

3. The lubrication and hydraulic control system according to claim 1, characterized in that: The lubricating oil circuit (2) comprises a lubricating oil pump and a volumetric oil separator (7), wherein the lubricating oil pump is arranged at the outlet of the lubricating oil tank (1), and the volumetric oil separator (7) is arranged at the end of the lubricating oil circuit (2).

4. The lubrication and hydraulic control system according to claim 1, characterized in that: A filter screen (8) is arranged inside the lubricating oil tank (1), and the lubricating oil path (2) passes through the filter screen (8) and extends into the bottom of the lubricating oil tank (1).

5. The lubrication and hydraulic control system according to claim 4, characterized in that: The filter net (8) comprises a net body (81) and at least one filter cartridge (82) arranged on the net body (81); the filter cartridge (82) protrudes upward from the net body (81); and the cartridge wall of the filter cartridge (82) forms a filtering structure.

6. The lubrication and hydraulic control system according to claim 5, characterized in that: The filter screen (8) is concave, the filter cartridge (82) is arranged at the maximum concave position of the filter screen (8), and the height of the filter cartridge (82) is higher than the maximum height of the filter screen (8).

7. A lubrication and hydraulic control system according to any one of claims 1 to 6, characterized in that: The hydraulic oil circuit (4) comprises a hydraulic oil pump (9) and a plurality of hydraulic branches (10) arranged at the outlet of the hydraulic oil pump (9), and the plurality of hydraulic branches (10) are connected in parallel.

8. The lubrication and hydraulic control system according to claim 7, characterized in that: The outlet of the hydraulic oil pump (9) is provided with a one-way valve (11) to prevent the hydraulic oil from flowing back to the hydraulic oil pump (9).

9. The lubrication and hydraulic control system according to claim 7, characterized in that: The single hydraulic branch circuit (10) comprises a hydraulic cylinder (12), a reversing valve (13) and a relief valve (14); the reversing valve (13) controls the extension and retraction of the hydraulic cylinder (12); and the relief valve (14) opens to release pressure when the hydraulic oil pressure in the hydraulic branch circuit (10) reaches a preset pressure.

10. A cylindrical grinding machine, comprising a bed (15) and a lubrication and hydraulic control system, characterized in that: The lubrication and hydraulic control system is the lubrication and hydraulic control system according to any one of claims 1 to 9, the lubrication oil tank (1) is arranged on the lower side of the bed (15), and the hydraulic oil tank (3) is arranged on the outer side of the bed (15).

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