CN211202446U - Novel closed type static pressure workbench hydraulic system - Google Patents
Novel closed type static pressure workbench hydraulic system Download PDFInfo
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- CN211202446U CN211202446U CN201922281572.2U CN201922281572U CN211202446U CN 211202446 U CN211202446 U CN 211202446U CN 201922281572 U CN201922281572 U CN 201922281572U CN 211202446 U CN211202446 U CN 211202446U
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Abstract
The utility model discloses a novel closed static pressure workstation hydraulic system belongs to lathe technical field. The pressure limiting variable pump absorbs oil, oil is filtered by the coarse filter and the fine filter, the accumulator stores the liquid to reduce system pulsation, the pressure reducing valve regulates pressure, the pressure is displayed by the pressure gauge, pressure oil in a static pressure part of a main shaft is distributed to each static pressure oil cavity of the main shaft through the constant pressure static pressure control device, oil supply pressure and oil film rigidity are regulated through the pressure reducing valve, oil in a back pressure static pressure part is distributed to each static pressure oil cavity of a back pressure guide rail through the constant pressure static pressure control device, the oil supply pressure and the oil film rigidity are regulated through the pressure reducing valve, and pressure oil in a main guide rail of a workbench is reduced by the pressure reducing valve and is supplied to the variable-frequency constant-current equivalent multi-head pump. The utility model has the characteristics of bear big, high rigidity, precision height, retentivity are good.
Description
Technical Field
The utility model relates to a novel closed static pressure workstation hydraulic system belongs to lathe technical field.
Background
With the development of the fields of equipment manufacturing industry, ships, war industry, power equipment and the like, the demand for large-scale high-efficiency and high-precision numerical control vertical hobbing machines is increased, the diameter of the numerical control vertical hobbing machine produced at home at present is mostly 3.5 meters, and the large-scale numerical control vertical hobbing machine equipment depends on foreign import. At present, the main limiting factors for manufacturing large numerical control vertical gear hobbing machines with the diameter of more than 5 meters in China are lack of large tooth dividing and high-differential-precision numerical control high-rigidity working tables.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a novel closed static pressure workstation hydraulic system adopts this hydraulic system's workstation main shaft to adopt constant voltage static pressure, workstation backpressure board to adopt constant voltage static pressure, workstation to bear the weight of the guide rail and adopt the constant current static pressure structure. The constant-pressure static pressure main shaft bearing structure has the characteristics of good centering precision and high rigidity, and the closed constant-flow static pressure thrust bearing structure has the characteristics of large bearing capacity, high rigidity, high precision and good retentivity, and can meet the requirements of large-size gear machining equipment.
The utility model provides a technical scheme that its technical problem adopted is: a novel closed hydrostatic workbench hydraulic system comprises a coarse filter, a pressure limiting variable pump, a pressure gauge, a fine filter, an energy accumulator, a pressure reducing valve, a pressure relay, a constant pressure hydrostatic control device and a constant flow equivalent multi-head pump, wherein the pressure limiting variable pump is installed on a main hydraulic station; a constant-flow equivalent multi-head pump is arranged between the pressure reducing valve and the main guide rail of the workbench.
The pressure-limiting variable pump sucks oil and then filters the oil through a coarse filter and a fine filter, the pressure-limiting variable pump sets oil supply pressure, the flow of the pressure-limiting variable pump can change along with the change of system pressure, and the flow can be automatically adjusted according to the load pressure; the energy accumulator absorbs the pulsation to make the auxiliary power source, the energy accumulator is an energy storage device in the hydropneumatic system, it changes the energy in the system into the compression energy or potential energy to store up in the right time, when the system needs, change the compression energy or potential energy into the hydraulic pressure or atmospheric pressure energy and release, supply the system again, when the system increases the pressure instantaneously, it can absorb this partial energy, in order to guarantee the whole system pressure is normal; the pressure reducing valve changes the flow speed and the kinetic energy of fluid by changing the throttle area to cause different pressure losses to adjust the oil supply pressure of each hydrostatic guide rail, the numerical value of a pressure gauge is observed, a pressure relay sets a protection pressure alarm, when the system pressure reaches the set value of the pressure relay, an electric signal is sent out to release and reverse an oil circuit, an execution element realizes sequential action and plays a role of safety protection, and oil outlets of a constant-pressure hydrostatic control device and a constant-current equivalent multi-head pump are connected with oil cavities of each guide rail.
The utility model has the advantages that: the utility model has the characteristics of bear big, high rigidity, precision height, retentivity good, be particularly useful for among the large-scale lathe hydrostatic guideway structure.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Fig. 1 is a schematic diagram of the system of the present invention.
Reference numbers in the figures:
1. the device comprises a coarse filter, 2 a pressure limiting type variable pump, 3 a pressure gauge, 4 a fine filter, 5 an energy accumulator, 6 a pressure reducing valve, 7 a pressure relay, 8 a constant pressure static pressure control device, 9 a constant flow equivalent multi-head pump, 10 a workbench back pressure guide rail, 11 a workbench main shaft, 12 a workbench main guide rail.
Detailed Description
As shown in figure 1, a novel closed hydrostatic workbench hydraulic system comprises a coarse filter 1, a pressure-limiting variable pump 2, a pressure gauge 3, a fine filter 4, an energy accumulator 5, a pressure reducing valve 6, a pressure relay 7, a constant-pressure hydrostatic control device 8 and a constant-current equivalent multi-head pump 9, wherein the pressure-limiting variable pump 2 is arranged on a main hydraulic station, the coarse filter 1 is arranged on a front pipeline of the pressure-limiting variable pump 2, the fine filter 4 is arranged on a rear pipeline of the pressure-limiting variable pump, a pressure gauge 3 is arranged on a pipeline between the pressure limiting type variable pump 2 and the fine filter 4, the other end of the fine filter 4 is connected with an energy accumulator 5, the energy accumulator 5 is respectively connected with a workbench backpressure guide rail 10, a workbench spindle 11 and a workbench main guide rail 12 through a pressure reducing valve 6, a pressure relay 7 and the pressure gauge 3 are arranged on the pipeline of the pressure reducing valve 6, and a constant-pressure static pressure control device 8 is arranged between the pressure reducing valve 6 and the workbench backpressure guide rail 10 and between the pressure reducing valve 6 and the workbench spindle 11; a constant-flow equivalent multi-head pump 9 is arranged between the pressure reducing valve 6 and the main guide rail 12 of the workbench.
The pressure-limiting variable pump 2 sucks oil and then filters the oil through the coarse filter 1 and the fine filter 4, the pressure-limiting variable pump 2 sets oil supply pressure, the flow of the pressure-limiting variable pump 2 can change along with the change of system pressure, and the flow can be automatically adjusted according to the load pressure; the energy accumulator 5 absorbs the pulsation to be used as an auxiliary power source, the energy accumulator 5 is an energy storage device in a hydraulic pneumatic system, the energy in the system is converted into compression energy or potential energy to be stored at a proper time, when the system needs the energy accumulator, the compression energy or the potential energy is converted into hydraulic energy or air pressure energy to be released and supplied to the system again, and when the instantaneous pressure of the system is increased, the energy accumulator can absorb the energy to ensure the normal pressure of the whole system; the pressure reducing valve 6 changes the flow speed and the kinetic energy of fluid by changing the throttle area to cause different pressure losses to adjust the oil supply pressure of each hydrostatic guide rail, the numerical value of the pressure gauge 3 is observed, the pressure relay 7 sets a protection pressure alarm, when the system pressure reaches the set value of the pressure relay 7, an electric signal is sent out to release and reverse the pressure of an oil way, the execution elements realize sequential actions to play a role in safety protection, and the oil outlets of the constant-pressure hydrostatic control device 8 and the constant-current equivalent multi-head pump 9 are connected with the oil cavities of each guide rail.
Novel closed static pressure workstation hydraulic system's working process: firstly, a pressure limiting type variable pump 2 absorbs oil, oil is filtered by a coarse filter 1 and a fine filter 4 and then is conveyed to each static pressure oil way through a pipeline, meanwhile, an energy accumulator 5 is filled with liquid for energy storage in the oil supply process to reduce system pulsation, a pressure reducing valve 6 adjusts the pressure according to the needs of each static pressure system, the pressure can be displayed and observed by a pressure gauge 3, a pressure relay 7 can monitor whether the pressure of the oil way meets the requirements or not in the static pressure oil supply process, the condition that the oil is cut off or the oil supply is insufficient to cause grinding of a guide rail and the local abrasion of the guide rail is serious is avoided, the static pressure part pressure oil of a main shaft 11 of a workbench is divided into each static pressure oil cavity of the main shaft by a constant pressure static pressure control device 8, the oil supply pressure and the oil film rigidity can be adjusted by the pressure reducing valve 6, the static pressure part pressure oil of a back pressure guide rail 10 of the, the pressure oil of the main guide rail 12 of the workbench is depressurized by a pressure reducing valve 6 and supplied to a variable-frequency constant-current equivalent multi-head pump 9, the constant-current equivalent multi-head pump 9 distributes the pressure oil to each static pressure oil cavity of the main guide rail of the workbench for the second time, the floating height and the rigidity of the main guide rail 12 of the workbench can be realized by adjusting the revolution of a variable-frequency motor, and the floating height of the workbench can be adjusted by adjusting the revolution of the variable-frequency motor for workpieces with different weights.
Claims (1)
1. The utility model provides a novel closed static pressure workstation hydraulic system which characterized in that: the pressure limiting type variable pump hydraulic system is composed of a coarse filter (1), a pressure limiting type variable pump (2), a pressure gauge (3), a fine filter (4), an energy accumulator (5), a pressure reducing valve (6), a pressure relay (7), a constant pressure static pressure control device (8) and a constant flow equivalent multi-head pump (9), wherein the pressure limiting type variable pump (2) is installed on a main hydraulic station, the coarse filter (1) is arranged on a front pipeline of the pressure limiting type variable pump (2), the fine filter (4) is arranged on a rear pipeline, the pressure gauge (3) is arranged on a pipeline between the pressure limiting type variable pump (2) and the fine filter (4), the other end of the fine filter (4) is connected with the energy accumulator (5), the energy accumulator (5) is respectively connected with a workbench back pressure guide rail (10), a workbench main shaft (11) and a workbench main guide rail (12) through the pressure reducing valve (6), the pressure relay (7) and the pressure gauge (3, a constant-pressure static pressure control device (8) is arranged between the pressure reducing valve (6) and the workbench back pressure guide rail (10) and between the pressure reducing valve (6) and the workbench main shaft (11); a constant-flow equivalent multi-head pump (9) is arranged between the pressure reducing valve (6) and the main guide rail (12) of the workbench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922281572.2U CN211202446U (en) | 2019-12-18 | 2019-12-18 | Novel closed type static pressure workbench hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922281572.2U CN211202446U (en) | 2019-12-18 | 2019-12-18 | Novel closed type static pressure workbench hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211202446U true CN211202446U (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922281572.2U Active CN211202446U (en) | 2019-12-18 | 2019-12-18 | Novel closed type static pressure workbench hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211202446U (en) |
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2019
- 2019-12-18 CN CN201922281572.2U patent/CN211202446U/en active Active
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