CN209831100U - Constant oil film thickness system for hydrostatic bearing of liquid lubricating oil constant delivery pump - Google Patents
Constant oil film thickness system for hydrostatic bearing of liquid lubricating oil constant delivery pump Download PDFInfo
- Publication number
- CN209831100U CN209831100U CN201822254042.4U CN201822254042U CN209831100U CN 209831100 U CN209831100 U CN 209831100U CN 201822254042 U CN201822254042 U CN 201822254042U CN 209831100 U CN209831100 U CN 209831100U
- Authority
- CN
- China
- Prior art keywords
- oil
- film thickness
- delivery pump
- relative motion
- liquid lubricating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model relates to a hydrostatic bearing technical field provides a hydrostatic bearing oil film thickness constant system of liquid lubricating oil constant delivery pump, including relative motion piece, oil pad, liquid lubricating oil constant delivery pump, servo motor, oil tank, oil film thickness monitoring devices and servo motor control device; the device comprises a relative motion piece, an oil pad, a servo motor, a closed pipeline, a servo motor control device and an oil film thickness monitoring device, wherein the relative motion piece and the oil pad form a group of hydrostatic bearings, an oil cavity is formed between the relative motion piece and the oil pad, the servo motor drives a liquid lubricating oil constant delivery pump through the coupler, the liquid lubricating oil constant delivery pump is communicated with the oil cavity between the relative motion piece and the oil pad through the closed pipeline, an oil film with a certain thickness is formed between the relative motion piece and the oil cavity, the oil film thickness monitoring device is used. The utility model has the advantages of being simple in structure and convenient in operation, can effectively satisfy the invariable requirement of liquid lubricating oil constant delivery pump hydrostatic bearing oil film thickness under the change load condition.
Description
Technical Field
The utility model relates to a hydrostatic bearing technical field, concretely relates to invariable system of liquid lubricating oil constant delivery pump hydrostatic bearing oil film thickness is applicable to the liquid lubricating oil constant delivery pump hydrostatic bearing system of all kinds of needs invariable oil film thickness of lathe trade.
Background
In the machine tool industry, one of guide rail forms of a moving part is a constant-flow hydrostatic guide rail, and a hydrostatic bearing technology of a liquid lubricating oil constant delivery pump is adopted. The oil cavity pressure regulating device is characterized in that the flow of each oil cavity is constant, and the oil cavity pressure is automatically regulated along with the change of the thickness of an oil film to adapt to the change of a load.
The oil film thickness is required to be reduced as much as possible to improve the rigidity, but the oil film cannot be too small (the oil film thickness is about 0.02 ~ 0.2.2 mm in normal operation) in order to avoid the danger of contacting a moving part and a fixed part, and the original technology of the hydrostatic bearing of the liquid lubricating oil constant delivery pump cannot meet the requirement of constant oil film thickness under the condition of changing load.
Disclosure of Invention
The utility model aims at providing a system that liquid lubricating oil constant delivery pump hydrostatic bearing guarantees that oil film thickness is invariable to the limitation of current liquid lubricating oil constant delivery pump hydrostatic bearing technique, satisfies the invariable requirement of liquid lubricating oil constant delivery pump hydrostatic bearing oil film thickness under the change load condition.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a static pressure bearing oil film thickness constant system of a liquid lubricating oil constant delivery pump comprises a relative motion piece, an oil pad, a liquid lubricating oil constant delivery pump, a servo motor, an oil tank, an oil film thickness monitoring device and a servo motor control device; the relative motion part and the oil pad form a group of hydrostatic bearings, an oil cavity is formed between the relative motion part and the oil pad, a servo motor drives a liquid lubricating oil constant delivery pump (constant displacement per revolution) to work through a coupler, the liquid lubricating oil constant delivery pump injects liquid lubricating oil into the oil cavity between the relative motion part and the oil pad through a closed pipeline, an oil film with a certain thickness is formed between the relative motion part and the oil pad, an oil film thickness monitoring device measures the thickness of the oil film in real time, an actual measurement value is transmitted to a servo motor control device, the servo motor control device compares the actual measurement value of the thickness of the oil film with a preset oil film thickness to give a deviation value, the rotating speed of the servo motor is corrected through automatic operation in a system, so that the rotating speed of the liquid lubricating oil constant delivery pump is changed, the flow of the lubricating oil injected into the oil cavity between the relative motion part and the oil pad by the, the thickness of the oil film between the relative motion part and the oil pad is ensured to be constant.
In the technical scheme, the oil film thickness monitoring device adopts a distance sensor, and the sensing distance of the distance sensor is 0.02-0.05 mm.
The utility model discloses the invariable system of liquid lubricating oil constant delivery pump hydrostatic bearing assurance oil film thickness, simple structure, convenient operation satisfy the invariable requirement of liquid lubricating oil constant delivery pump hydrostatic bearing oil film thickness under the change load condition.
Drawings
Fig. 1 is a general system diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the present embodiment provides a system for keeping the oil film thickness of a hydrostatic bearing of a liquid lubricant constant delivery pump constant, which includes a relative moving member 1, an oil pad 2, a liquid lubricant constant delivery pump 3, a servo motor 4, an oil tank 5, an oil film thickness monitoring device 6, and a servo motor control device 7; the relative motion part 1 and the oil pad 2 form a group of hydrostatic bearings; the servo motor 4 drives the liquid lubricating oil constant delivery pump 3 (constant displacement per revolution) to work through the coupler according to a preset rotating speed; the liquid lubricating oil constant delivery pump 3 injects a preset flow of liquid lubricating oil into an oil cavity between the relative motion part 1 and the oil pad 2 through a closed pipeline, and an oil film with a preset thickness is formed between the relative motion part 1 and the oil pad 2. The oil film thickness monitoring device 6 measures the oil film thickness in real time, the oil film thickness monitoring device 6 is connected with the servo motor control device 7, and the liquid lubricating oil constant delivery pump 3 is connected with the oil tank 5.
In the above embodiment, the oil film thickness monitoring device 6 employs a distance sensor, and the sensing distance of the distance sensor is 0.02-0.05 mm.
When the working load changes, the thickness of the oil film between the relative motion element 1 and the oil pad 2 changes. The oil film thickness monitoring device 6 measures the oil film thickness under the changing load in real time and transmits the measured value to the servo motor control device 7; the servo motor control device 7 compares the measured oil film thickness with the preset oil film thickness to give a deviation value, and corrects the rotating speed of the servo motor 4 through automatic operation in the system, so that the rotating speed of the liquid lubricating oil constant delivery pump 3 is changed, the lubricating oil flow injected into the oil cavity between the relative motion piece 1 and the oil pad 2 by the liquid lubricating oil constant delivery pump 3 is corrected, the oil film thickness between the relative motion piece 1 and the oil pad 2 is corrected, and the oil film thickness between the relative motion piece 1 and the oil pad 2 is ensured to be constant.
The flow of injected lubricating oil, the thickness of an oil film and the working load of each hydrostatic bearing have the following mathematical relations:
1. the flow of the injected lubricating oil of the hydrostatic bearing is equal to the product of the displacement per revolution and the rotating speed of the liquid lubricating oil constant delivery pump 3.
2. The liquid lubricating oil dosing pump 3 and the servo motor 4 rotate at the same speed.
3. When the flow of the injected lubricating oil of the hydrostatic bearing is constant, the 3 rd power of the oil film thickness is inversely proportional to the working load.
4. When the oil film thickness of the hydrostatic bearing is constant, the flow of the injected lubricating oil is in direct proportion to the working load.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (2)
1. The utility model provides a invariable system of liquid lubricating oil constant delivery pump hydrostatic bearing oil film thickness which characterized in that: the device comprises a relative motion part, an oil pad, a liquid lubricating oil constant delivery pump, a servo motor, an oil tank, an oil film thickness monitoring device and a servo motor control device; the device comprises a relative motion piece, an oil pad, a servo motor, a closed pipeline, a servo motor control device and an oil film thickness monitoring device, wherein the relative motion piece and the oil pad form a group of hydrostatic bearings, an oil cavity is formed between the relative motion piece and the oil pad, the servo motor drives a liquid lubricating oil constant delivery pump through the coupler, the liquid lubricating oil constant delivery pump is communicated with the oil cavity between the relative motion piece and the oil pad through the closed pipeline, an oil film with a certain thickness is formed between the relative motion piece and the oil cavity, the oil film thickness monitoring device is used.
2. The constant-thickness system for the oil film of the hydrostatic bearing of the liquid lubricating oil constant displacement pump as claimed in claim 1, wherein: the oil film thickness monitoring device adopts a distance sensor, and the sensing distance of the distance sensor is 0.02-0.05 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822254042.4U CN209831100U (en) | 2018-12-29 | 2018-12-29 | Constant oil film thickness system for hydrostatic bearing of liquid lubricating oil constant delivery pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822254042.4U CN209831100U (en) | 2018-12-29 | 2018-12-29 | Constant oil film thickness system for hydrostatic bearing of liquid lubricating oil constant delivery pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209831100U true CN209831100U (en) | 2019-12-24 |
Family
ID=68901105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822254042.4U Active CN209831100U (en) | 2018-12-29 | 2018-12-29 | Constant oil film thickness system for hydrostatic bearing of liquid lubricating oil constant delivery pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209831100U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113158369A (en) * | 2021-04-19 | 2021-07-23 | 哈尔滨理工大学 | Oil film flow simulation monitoring method for oil seal edge of hydrostatic thrust bearing oil pad |
-
2018
- 2018-12-29 CN CN201822254042.4U patent/CN209831100U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113158369A (en) * | 2021-04-19 | 2021-07-23 | 哈尔滨理工大学 | Oil film flow simulation monitoring method for oil seal edge of hydrostatic thrust bearing oil pad |
| CN113158369B (en) * | 2021-04-19 | 2023-11-28 | 哈尔滨理工大学 | Oil film flow simulation monitoring method for oil sealing edge of oil pad of hydrostatic thrust bearing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201645158U (en) | Closed static guide rail oil supply system | |
| CN102032167B (en) | Flow compensation technology of digital frequency conversion metering pump | |
| CN104390012B (en) | Mechanical sealing device for magnetic fluid lubrication and self-adaptive sealing control method | |
| CN103481197B (en) | The axial device for measuring force of a kind of grinding machine hydraulic pressure tailstock center | |
| CN209831100U (en) | Constant oil film thickness system for hydrostatic bearing of liquid lubricating oil constant delivery pump | |
| FI20040351A (en) | Measurement method and device | |
| CN103313594A (en) | Arrangement for the lubrication of saw chains | |
| US20140297032A1 (en) | Multi-joint robot having gas spring, and method for estimating inner pressure of the gas spring | |
| CN102220886B (en) | Device and method for automatically adjusting seal pressure of helical groove at shaft end of turbine | |
| CN104759929A (en) | Large precise heavy-load intelligent adjusting rotating table | |
| CN107580666A (en) | System for MQL | |
| CN109282918A (en) | A kind of device of on-line checking hydraulic static spindle real time temperature | |
| CN103016933A (en) | Dual-mode automatic bearing lubricating device based on piezoelectric pump | |
| CN205218544U (en) | Position feedback's hydrostatic guideway oil film control system | |
| CN104912856B (en) | Double oil cylinder synchronous servo control system devices | |
| CN202910578U (en) | Self-adaptive type constant-flow static pressure guide rail | |
| CN104234996A (en) | Measuring method of clearance leakage amount of multi-rotor screw pump | |
| CN211755909U (en) | System for controlling material flow by using pump speed | |
| CN204284455U (en) | Magnetic fluid dynamic pressure lubrication mechanical sealing device | |
| CN207308248U (en) | A kind of automobile engine cylinder hole wall applies oil lubrication device | |
| CA3011219A1 (en) | A method for determining the viscosity of a conveying fluid conveyed by means of a pump | |
| CN203003172U (en) | Oil film thickness measuring device with frequent display function | |
| CN210893343U (en) | Flowmeter test platform | |
| CN208833131U (en) | A kind of cubing measuring ball screw lead error | |
| CN204842817U (en) | Adopt load cell's ultralow fast hydraulic press |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |