CN202591627U - Spindle device for hydrodynamic journal bearing - Google Patents

Spindle device for hydrodynamic journal bearing Download PDF

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Publication number
CN202591627U
CN202591627U CN 201220219524 CN201220219524U CN202591627U CN 202591627 U CN202591627 U CN 202591627U CN 201220219524 CN201220219524 CN 201220219524 CN 201220219524 U CN201220219524 U CN 201220219524U CN 202591627 U CN202591627 U CN 202591627U
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CN
China
Prior art keywords
bearing
hole
liquid
oil
main shaft
Prior art date
Application number
CN 201220219524
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Chinese (zh)
Inventor
张响芝
Original Assignee
张响芝
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Filing date
Publication date
Application filed by 张响芝 filed Critical 张响芝
Priority to CN 201220219524 priority Critical patent/CN202591627U/en
Application granted granted Critical
Publication of CN202591627U publication Critical patent/CN202591627U/en

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Abstract

The utility model relates to a spindle device for a hydrodynamic journal bearing and belongs to the spindle device. The spindle device for the hydrodynamic journal bearing comprises a machine body assembly and a spindle arranged in an inner hole of the machine body assembly; a front hydrodynamic radial bearing and a rear hydrodynamic radial bearing are arranged between the machine body assembly and the spindle; and the front end of the front hydrodynamic radial bearing is provided with a hydrodynamic thrust bearing. The machine body assembly consists of a machine body, a front end cover arranged at the front end of the machine body and a rear end cover arranged at the rear end of the machine body; and the machine body and the front end cover are provided with an oil inlet channel and an oil outlet channel respectively. According to the spindle device, the machine body has few assemblies; the spindle device is simple in structure; the gap of the thrust bearing is easy to adjust; an oil cavity with an arc bottom is adopted by the hydrodynamic radial bearing, so that the oil cavity is easy to process; due to the forming of an oil cavity pressure balancing channel, pressure in the oil cavity can be kept equal; and flow controllers are directly arranged on the wall of the oil cavity, so that an oil path is shortest after throttling, and the spindle device is convenient to debug and maintain simultaneously.

Description

The hydrodynamic journal liquid polymers main shaft device
Technical field
The utility model relates to the main shaft device, particularly hydrodynamic journal liquid polymers main shaft device of the hydrostatic bearing that possesses the rotation of ability supporting spindle.
Background technology
Various rolling bearings that the existing machine tool main shaft is used and hydrodynamic pressure bearing are reaching very high level aspect design and the architecture quality; But at hypervelocity, utmost point low speed and to precision, rigidity, damping characteristic and life-span etc. the occasion of specific (special) requirements is arranged, but often surmounted the usefulness scope of rolling bearing and hydrodynamic pressure bearing.The hydrostatic pressure main shaft is compared with the main shaft of other supporting forms; Have and to adapt to very wide velocity interval; Very high running accuracy and positioning accuracy, sufficiently high bearing capacity, favorable rigidity and vibration resistance, main shaft rigidity and bearing capacity do not receive velocity effect; Coefficient of friction is little, and characteristics such as the precision stability of main shaft is long.
Summary of the invention
The purpose of the utility model provides a kind of hydrodynamic journal liquid polymers main shaft device, and two groups of supporting constructions of fluid pressure journal bearing and back fluid pressure journal bearing before this main shaft adopts are provided with the liquid thrust bearing at the front end of preceding liquid journal bearing; The radially curved groove-like of oil pocket of front and back fluid pressure journal bearing; The position near two ends at the circular arc of said arc groove is respectively equipped with fuel feed hole, between corresponding two fuel feed holes on the external cylindrical surface of bearing body, is provided with the annular groove that is used for the equilibrium oil cavity pressure.It is simple in structure; The oil pocket handling ease; Keep equal pressure in the oil pocket; The throttling rear oil duct is the shortest.
The technical solution of the utility model is that the hydrodynamic journal liquid polymers main shaft device comprises cylinder block set; Be located at the main shaft in the cylinder block set endoporus; Liquid journal bearing and back liquid journal bearing before between cylinder block set and main shaft, being provided with; Front end at preceding liquid journal bearing is provided with the liquid thrust bearing, and said cylinder block set is made up of body, the rear end cap that is located at the drive end bearing bracket of body leading section and is located at body rear end portion; In body and drive end bearing bracket, be provided with oil inlet passage and oil discharge passage.
Can be provided with branching block on the above-described body, be provided with the oily passage of branch in this branching block, the oily passage of said branch is communicated with the interior oil inlet passage of body.
The preceding liquid journal bearing of the utility model can be provided with fore bearing body and preceding flow controller; The fore bearing body is fixedly mounted in the shoulder hole of endoporus of front end of body and is nested with on main shaft; Radially be provided with the fuel feed hole that the oil pocket on the hole wall of a plurality of and its endoporus is communicated with on the fore bearing body; The external cylindrical surface upper edge of fore bearing body is circumferentially with the cannelure that the oil inlet passage on the hole wall with the shoulder hole of above-mentioned fuel feed hole and body is communicated with, and preceding flow controller is located at the inner of fuel feed hole.
The back liquid journal bearing of the utility model can be provided with rear bearing body and back flow controller, and the rear bearing body is fixedly mounted in the shoulder hole of endoporus of rear end of body and is nested with on main shaft, and the end is connected with the leading section gap of the rear end cap of body rear end portion thereafter; Radially be provided with the fuel feed hole that the oil pocket on the hole wall of a plurality of and its endoporus is communicated with on the rear bearing body; The external cylindrical surface upper edge of rear bearing body is circumferentially with the cannelure that the oil inlet passage on the hole wall with the shoulder hole of above-mentioned fuel feed hole and body is communicated with, and back flow controller is located at the inner of fuel feed hole.
The liquid thrust bearing of the utility model can by the front end face of the fore bearing body of former liquid journal bearing as the liquid thrust bearing after on the body, front-end of spindle portion outer circumference surface annular convex, form as liquid thrust bearing precursor and flow controller with the rear end face of the drive end bearing bracket of cylinder block set.
Can symmetry on the hole wall of the endoporus of the fore bearing body of the preceding liquid journal bearing of the utility model be provided with four oil pockets; Said oil pocket radially is the circular groove shape; The position near two ends at the circular arc of said circular groove is respectively equipped with fuel feed hole, the relief groove that is communicated with at the oil inlet passage that is provided with between corresponding two fuel feed holes on the external cylindrical surface of fore bearing body on the hole wall that is used for the equilibrium oil cavity pressure and shoulder hole body.
Can symmetry on the hole wall of the endoporus of the rear bearing body of the back liquid journal bearing of the utility model be provided with four oil pockets; Said oil pocket is along circumferential curved groove-like; The position near two ends at the circular arc of said arc groove is respectively equipped with fuel feed hole, the relief groove that is communicated with at the oil inlet passage that is provided with between corresponding two fuel feed holes on the external cylindrical surface of rear bearing body on the hole wall that is used for the equilibrium oil cavity pressure and shoulder hole body.
When being main shaft device work, the operation principle of the utility model connects satisfactory machine oil from the branching block fuel feed hole; Affact main shaft behind the flow controller of machine oil through front and back liquid journal bearing and liquid thrust bearing; Main shaft is in suspended state fully; Do not contact friction when making main axis rotation, reduced friction loss and heating most possibly.Get into fuel tank from the machine oil of front and back liquid journal bearing and the discharge of liquid thrust bearing through the oil discharge passage in body and the drive end bearing bracket; Take away the heat that is produced of main shaft device when work and the friction of machine Shan; Machine oil recycles behind cold filtration, guarantees that main shaft is stable, works reliably.
The rear end face that the utility model has the advantages that the drive end bearing bracket that utilizes cylinder block set is as liquid thrust bearing precursor, and cylinder block set is few, and is simple in structure; Oil pocket at the bottom of the liquid journal bearing employing circular arc can be used simple eccentric processes, thereby the oil pocket handling ease, thereby has overcome dark oil pocket problem of difficult processing such as existing grade; For guarantee adopting at the bottom of the circular arc behind the oil pocket, make maintenance equal pressure in the oil pocket owing to main axis rotation can make the inhomogeneous oil pocket pressure equalisation passage that is provided with of oil pocket pressure distribution; Flow controller adopts the plug cock form, and flow controller can be directly installed on the bearing, and the throttling rear oil duct is the shortest, convenient debugging and maintenance.
Description of drawings
Fig. 1 is the organigram of the utility model;
Fig. 2 is the left view of the utility model;
Fig. 3 is the liquid journal bearing organigram of the utility model;
Fig. 4 is that A among Fig. 3 is to expanded view.
Among the figure: 1-pulley assembly, 2-oil seal cover, 3-outside framework oil seal, flow controller before the 4-drive end bearing bracket, 5-, 6-oil inlet passage; The 7-fore bearing, 8-machine body cover, 9-main shaft, 10-rear bearing, 11-body, 12-plug cock; The 13-rear end cap, the husky wheel assembly of 14-, flow controller behind the 15-, 16-oil returning pipe joint, 17-oil discharge passage, 18-thrust bearing flow controller; The 19-inlet connector, 20-high-pressure hose, 21-oil pocket, 22-fuel feed hole, 23-relief groove.
The specific embodiment
Like Fig. 1, shown in Figure 2, the utility model comprises cylinder block set, is installed in the main shaft 9 in the cylinder block set endoporus.Liquid journal bearing and back liquid journal bearing before between cylinder block set and main shaft 9, being equipped with are equipped with the liquid thrust bearing at the front end of preceding liquid journal bearing.Cylinder block set is made up of body 8, the rear end cap 13 that is installed in the drive end bearing bracket 4 of body 8 leading sections and is installed in body 8 rearward end.In body 8 and drive end bearing bracket 4, be processed with oil inlet passage 6 and oil discharge passage 17.Branching block 11 is installed on the body 8, is processed with split channel in the branching block 11, said split channel is communicated with body 8 interior oil inlet passages 6.
Before the liquid journal bearing comprise fore bearing body 7 and preceding flow controller 5, fore bearing body 7 is fixedly mounted in the shoulder hole of endoporus of front end of body 8 and is nested with on main shaft 9.Radially be processed with the fuel feed hole 22 that the oil pocket on the hole wall with its endoporus is communicated with on the fore bearing body 7; The external cylindrical surface upper edge of fore bearing body 7 circumferentially is processed with the cannelure that the oil inlet passage 6 on the hole wall with the shoulder hole of above-mentioned fuel feed hole 22 and body 8 is communicated with, and preceding flow controller 5 is installed in the inner of fuel feed hole 22.
Back liquid journal bearing is provided with rear bearing body 10 and back flow controller 15; Rear bearing body 10 is fixedly mounted in the shoulder hole of endoporus of rear end of body 8 and is nested with on main shaft 9, leaves the oil return gap between the leading section of the rear end cap 13 of end and body 8 rearward end thereafter.Radially be processed with the fuel feed hole 22 that the oil pocket on the hole wall with its endoporus is communicated with on the rear bearing body 10; The external cylindrical surface upper edge of rear bearing body 10 circumferentially is processed with the cannelure that the oil inlet passage 6 on the hole wall with the shoulder hole of above-mentioned fuel feed hole 22 and body 8 is communicated with, and back flow controller 15 is installed in the inner of fuel feed hole 22.
The liquid thrust bearing by the front end face of the fore bearing body 7 of former liquid journal bearing as the liquid thrust bearing after on the body, main shaft 9 leading section outer circumference surfaces annular convex, form as liquid thrust bearing precursor and flow controller 18 with the rear end face of the drive end bearing bracket 4 of cylinder block set.
Like Fig. 3, shown in Figure 4; Before on the hole wall of endoporus of fore bearing body 7 of liquid journal bearing symmetry be processed with four oil pockets 21; Oil pocket 21 radially is the circular groove shape; The position near two ends at the circular arc of said circular groove is processed with four fuel feed holes 22 respectively, the groove-like relief groove 23 that is communicated with at the oil inlet passage 6 that is processed with between corresponding two fuel feed holes 22 on the external cylindrical surface of fore bearing body 7 on the hole wall that is used for the equilibrium oil cavity pressure and shoulder hole body 8.
Symmetry is processed with four oil pockets 21 on the hole wall of the endoporus of the rear bearing body 10 of back liquid journal bearing; Oil pocket 21 is along circumferential curved groove-like; The position near two ends at the oil pocket 21 of said arc groove shape is processed with four fuel feed holes 22 respectively, the groove-like relief groove 23 that is communicated with at the oil inlet passage 6 that is processed with between corresponding two fuel feed holes 22 on the external cylindrical surface of rear bearing body 10 on the hole wall that is used for the equilibrium oil cavity pressure and shoulder hole body 8.
Like Fig. 1, shown in Figure 2, at the front end of main shaft 9 pulley assembly 1 is installed, husky wheel assembly 14 is installed in the rear end of main shaft 9.Branching block 11 is installed in the upper end of body 8, and inlet connector 19 is installed on branching block 11, and high-pressure hose 20 is connected with inlet connector 19.Oil-out place at the oil discharge passage 17 of the lower end of body 8 is equipped with oil returning pipe joint 16.Oil seal cover 2 and outside framework oil seal 3 are installed on drive end bearing bracket 4 and rear end cap 13.

Claims (7)

1. hydrodynamic journal liquid polymers main shaft device; Comprise cylinder block set; Be located at the main shaft in the cylinder block set endoporus; Liquid journal bearing and back liquid journal bearing before it is characterized in that between cylinder block set and main shaft, being provided with are provided with the liquid thrust bearing at the front end of preceding liquid journal bearing, and said cylinder block set is made up of body, the rear end cap that is located at the drive end bearing bracket of body leading section and is located at body rear end portion; In body and drive end bearing bracket, be provided with oil inlet passage and oil discharge passage.
2. hydrodynamic journal liquid polymers main shaft device according to claim 1 is characterized in that body is provided with branching block, is provided with the oily passage of branch in this branching block, and the oily passage of said branch is communicated with the interior oil inlet passage of body.
3. hydrodynamic journal liquid polymers main shaft device according to claim 1; The liquid journal bearing is provided with fore bearing body and preceding flow controller before it is characterized in that; The fore bearing body is fixedly mounted in the shoulder hole of endoporus of front end of body and is nested with on main shaft; Radially be provided with the fuel feed hole that the oil pocket on the hole wall of a plurality of and its endoporus is communicated with on the fore bearing body; The external cylindrical surface upper edge of fore bearing body is circumferentially with the cannelure that the oil inlet passage on the hole wall with the shoulder hole of above-mentioned fuel feed hole and body is communicated with, and preceding flow controller is located at the inner of fuel feed hole.
4. hydrodynamic journal liquid polymers main shaft device according to claim 1; It is characterized in that back liquid journal bearing is provided with rear bearing body and back flow controller; The rear bearing body is fixedly mounted in the shoulder hole of endoporus of rear end of body and is nested with on main shaft, and the end is connected with the leading section gap of the rear end cap of body rear end portion thereafter; Radially be provided with the fuel feed hole that the oil pocket on the hole wall of a plurality of and its endoporus is communicated with on the rear bearing body; The external cylindrical surface upper edge of rear bearing body is circumferentially with the cannelure that the oil inlet passage on the hole wall with the shoulder hole of above-mentioned fuel feed hole and body is communicated with, and back flow controller is located at the inner of fuel feed hole.
5. hydrodynamic journal liquid polymers main shaft device according to claim 1, it is characterized in that the liquid thrust bearing by the front end face of the fore bearing body of former liquid journal bearing as the liquid thrust bearing after on the body, front-end of spindle portion outer circumference surface annular convex, form as liquid thrust bearing precursor and flow controller with the rear end face of the drive end bearing bracket of cylinder block set.
6. hydrodynamic journal liquid polymers main shaft device according to claim 3; It is characterized in that said before on the hole wall of endoporus of fore bearing body of liquid journal bearing symmetry be provided with four oil pockets; Said oil pocket radially is the circular groove shape; The position near two ends at the circular arc of said circular groove is respectively equipped with fuel feed hole, the relief groove that is communicated with at the oil inlet passage that is provided with between corresponding two fuel feed holes on the external cylindrical surface of fore bearing body on the hole wall that is used for the equilibrium oil cavity pressure and shoulder hole body.
7. hydrodynamic journal liquid polymers main shaft device according to claim 4; Four oil pockets that are provided with that it is characterized in that symmetry on the hole wall of endoporus of rear bearing body of said back liquid journal bearing; Said oil pocket is along circumferential curved groove-like; The position near two ends at the circular arc of said arc groove is respectively equipped with fuel feed hole, the relief groove that is communicated with at the oil inlet passage that is provided with between corresponding two fuel feed holes on the external cylindrical surface of rear bearing body on the hole wall that is used for the equilibrium oil cavity pressure and shoulder hole body.
CN 201220219524 2012-05-16 2012-05-16 Spindle device for hydrodynamic journal bearing CN202591627U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220219524 CN202591627U (en) 2012-05-16 2012-05-16 Spindle device for hydrodynamic journal bearing

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Application Number Priority Date Filing Date Title
CN 201220219524 CN202591627U (en) 2012-05-16 2012-05-16 Spindle device for hydrodynamic journal bearing

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102632257A (en) * 2012-05-16 2012-08-15 张响芝 Spindle device for hydrodynamic journal bearing
CN104551023A (en) * 2013-10-25 2015-04-29 财团法人工业技术研究院 Device of the axial-directional oil chamber of hydrostatic spindle
CN107191487A (en) * 2016-03-15 2017-09-22 财团法人工业技术研究院 Hydrostatic pressure bearing
CN107735201A (en) * 2015-06-15 2018-02-23 雷肖尔股份公司 For the main axle unit for the lathe for finishing the workpiece with channel shaped configuration
CN107962450A (en) * 2016-10-19 2018-04-27 发那科株式会社 Drainage mechanism and the lathe for possessing drainage mechanism
CN110026573A (en) * 2019-05-11 2019-07-19 北京工业大学 A kind of fluid pressure electro spindle cooling device based on paltie effect

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102632257A (en) * 2012-05-16 2012-08-15 张响芝 Spindle device for hydrodynamic journal bearing
CN104551023A (en) * 2013-10-25 2015-04-29 财团法人工业技术研究院 Device of the axial-directional oil chamber of hydrostatic spindle
CN104551023B (en) * 2013-10-25 2017-11-10 财团法人工业技术研究院 Hydrostatic pressure main shaft axial direction oil pocket device
CN107735201A (en) * 2015-06-15 2018-02-23 雷肖尔股份公司 For the main axle unit for the lathe for finishing the workpiece with channel shaped configuration
CN107191487A (en) * 2016-03-15 2017-09-22 财团法人工业技术研究院 Hydrostatic pressure bearing
CN107962450A (en) * 2016-10-19 2018-04-27 发那科株式会社 Drainage mechanism and the lathe for possessing drainage mechanism
US10343245B2 (en) 2016-10-19 2019-07-09 Fanuc Corporation Liquid drainage mechanism and machine tool equipped with liquid drainage mechanism
CN110026573A (en) * 2019-05-11 2019-07-19 北京工业大学 A kind of fluid pressure electro spindle cooling device based on paltie effect

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121212

Termination date: 20140516