CN102221039B - Dynamic and static pressure ball socket bearing structure for high speed gear shaper - Google Patents
Dynamic and static pressure ball socket bearing structure for high speed gear shaper Download PDFInfo
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- CN102221039B CN102221039B CN 201110153765 CN201110153765A CN102221039B CN 102221039 B CN102221039 B CN 102221039B CN 201110153765 CN201110153765 CN 201110153765 CN 201110153765 A CN201110153765 A CN 201110153765A CN 102221039 B CN102221039 B CN 102221039B
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Abstract
The invention relates to a dynamic and static pressure ball socket bearing structure for a high speed gear shaper. The structure comprises a ball rod (1), a ball socket (2) and a shell (3), wherein the lower end of the shell (3) is connected with a cutter spindle; a ball main body (6) at the lower end of the ball rod (1) is positioned in the ball socket (2); the ball socket (2) is arranged in an installation seat of the shell (3) and is positioned and subjected to gap adjustment along the axial direction of the ball rod (1) through a pressing ring (4); and the upper end of the ball rod (1) stretches out of the pressing ring (4) and is connected with a crank. The structure is characterized in that: an oil injection hole (7) is formed in the center of the ball rod (1) and reaches the ball center of the ball main body (6); the ball main body (6) is provided with a throttler (5) along the radial direction; and the oil inlet end of the throttler (5) is communicated with the oil injection hole (7) which reaches the ball center, and the oil outlet end of the throttler (5) is communicated with an annular shallow cavity on the surface of the ball main body (6), so that the shallow cavity generates dynamic pressure bearing force and static pressure bearing force due to a step effect to bear upper and lower axial forces from a gear shaping spindle when the ball main body (6) moves. The structure is simple and has a good lubricating effect and long service life.
Description
Technical field
The present invention relates to a kind of gear shaping machine, especially relate to the connection cutter spindle of one of critical movements parts in a kind of high speed gear shaper and the ball socket bearing structure of crank, specifically a kind of high speed gear shaper is with active and static pressure ball socket bearing structure.
Background technique
At present, the most slidercrank mechanisms that adopt of the main movement of high speed gear shaper, cutter spindle links by ball socket bearing and connecting rod as the slide block in the mechanism, when crank during around its center steering, cutter spindle produces up and down main movement, in this mechanism, owing to being subjected to structural limitations, the sphere diameter in the ball socket bearing is about 50-60mm, the driving force that the cutting force of cutter and cutter spindle move up and down all acts on this, and stressed direction and size all change at high frequency.Therefore when the main movement scheme of this type of lathe of design, pay particular attention to ball socket bearing herein.
In the production scene, because a variety of causes,, gap not enough such as lubricant oil be too small causes the overheated and sintering of ball pivot, and the phenomenon that excesssive gap causes noise to exceed standard happens occasionally.Therefore ball socket bearing is the success or failure key that is related to high speed gear shaper.
Traditional way is to inject continuous lubrication oil to the spheroid junction plane, be used for reaching lubricated and with the purpose of heat, this type of way is feasible when the gear shaping stroke speed is in 2000str/min, can produce the inordinate wear of spheroid junction plane when 2000str/min is above.
In sum, the gear shaping machine ball socket bearing of existing structure can't satisfy high speed stroke needs.
Summary of the invention
The objective of the invention is to satisfy for the structure of existing ball socket bearing and lubricating system the problem of 2000 times/minutes above gear shaping speed, design a kind of high lubricating effect, can satisfy the high speed gear shaper active and static pressure ball socket bearing structure of High Speed Gear Shaping requirement and long service life.
Technological scheme of the present invention is:
A kind of high speed gear shaper active and static pressure ball socket bearing structure, comprise club 1, ball pivot seat 2 and housing 3, the lower end of housing 3 links to each other with cutter spindle, the spheroid main body 6 of club 1 lower end is arranged in ball pivot seat 2, ball pivot seat 2 is installed in the fitting seat of housing 3 and realizes along club 1 axial location and gap adjustment by trim ring 4, the upper end of club 1 is stretched out outside the trim ring 4 and is linked to each other with crank, the center that it is characterized in that described club 1 is provided with oil hole 7, the centre of sphere of these oil hole 7 through spheroid main bodys 6, on spheroid main body 6, along it flow controller 5 is installed radially, the oil inlet end of flow controller 5 communicates with the oil hole of the through centre of sphere 7, the oil outlet end of flow controller 5 communicates with the shallow annular chamber on spheroid main body 6 surfaces, in order to make described shallow chamber bear up and down axial force from the gear shaping main shaft because alias forms dynamic pressure bearing capacity and static pressure bearing capacity when spheroid main body 6 motion.
Described flow controller 5 is comprised of major diameter oilhole and the minor diameter oilhole of mutual perforation, the oil outlet end of described minor diameter oilhole communicates with the shallow annular chamber on spheroid main body 6 surfaces, and the oil inlet end of described major diameter oilhole is connected with the oil hole 7 of through spheroid main body 6 centre ofs sphere.
The quantity in the shallow annular chamber on described spheroid main body 6 surfaces equals 1/2 of described flow controller 5 quantity at least, and is separate or continuous by connecting groove between the adjacent shallow annular chamber, with the uniformity of further enhancing spheroid main body 6 surface lubrication oil content cloth.
The degree of depth in the shallow annular chamber on described spheroid main body 6 surfaces is grading structure, and is larger the closer to the degree of depth in the shallow chamber at flow controller 5 places.
The wear body that described ball pivot seat 2 is made for stupalith or deposit wearing layer at the parent metal material surface.
The diameter of described spheroid main body 6 is the 50-60 millimeter.
Beneficial effect of the present invention:
The present invention creatively the lubrication principle of shallow cavity configuration is applied to the ball pivot of gear shaping machine lubricated in, solved for a long time unsolved technical barrier of gear shaping machine, improved lubrication effect, improved widely the mean time between failures of gear shaping machine.
The present invention by adopting stupalith the ball pivot seat or set up the wear resistance that wear resistant coating has increased the ball pivot seat greatly, prolonged working life, with lubricated the matching in shallow chamber greatly prolonged the whole overhaul life.
Gear shaping machine ball socket bearing of the present invention is used for High Speed Gear Shaping cutter stroke movement, can effectively avoid the unusual damage of ball socket bearing, improves the antidetonation vibration absorption ability, effectively strengthens the reliability of main movement.
The present invention is simple in structure, is easy to realize.
Description of drawings
Fig. 1 is the structural representation of ball socket bearing of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1.
A kind of high speed gear shaper active and static pressure ball socket bearing structure, comprise club 1, ball pivot seat 2 and housing 3, the lower end of housing 3 links to each other with cutter spindle, ball pivot seat 2 can directly adopt stupalith to make, to improve its wear resistance, also can adopt in the method for parent metal material surface deposition antifriction metal (AFM) layer (such as zirconium oxide, aluminium oxide) or wear-resisting non-metallic layer (such as silicon nitride, silicon carbide) and be made.The spheroid main body 6 of club 1 lower end is arranged in ball pivot seat 2, the diameter of spheroid main body 6 is the 50-60 millimeter, ball pivot seat 2 is installed in the fitting seat of housing 3 and realizes along club 1 axial location and gap adjustment by trim ring 4, the upper end of club 1 is stretched out outside the trim ring 4 and is linked to each other with crank, the center of described club 1 is provided with oil hole 7, the centre of sphere of these oil hole 7 through spheroid main bodys 6, on spheroid main body 6, along it flow controller 5 is installed radially, flow controller 5 can adopt the orifice restriction device, it can directly process in spheroid main body 6, also can directly after market purchasing, be installed in the radial hole of spheroid main body 6, the oil inlet end of flow controller 5 communicates with the oil hole of the through centre of sphere 7, the oil outlet end of flow controller 5 communicates with the shallow annular chamber on spheroid main body 6 surfaces, the degree of depth in described shallow annular chamber preferably is grading structure, and the degree of depth the closer to the shallow chamber, outlet end place of flow controller 5 is darker, the degree of depth in shallow chamber of the present invention is between the 0.1-0.5 millimeter, or gradual change also can not gradual change, best with fade effect, in order to when 6 motion of spheroid main body, make described shallow chamber bear up and down axial force from the gear shaping main shaft because alias forms dynamic pressure bearing capacity and static pressure bearing capacity.When flow controller adopts direct processing structure constantly, flow controller 5 can be comprised of major diameter oilhole and the minor diameter oilhole of mutual perforation, the oil outlet end of described minor diameter oilhole communicates with the shallow annular chamber on spheroid main body 6 surfaces, and the oil inlet end of described major diameter oilhole is connected with the oil hole 7 of through spheroid main body 6 centre ofs sphere.The quantity in the shallow annular chamber on spheroid main body 6 surfaces equals 1/2 of described flow controller 5 quantity at least, and is separate or continuous by connecting groove between the adjacent shallow annular chamber, with the uniformity of further enhancing spheroid main body 6 surface lubrication oil content cloth.
Gear shaping machine main motion is when running up, and the stress between club 1 and the ball pivot seat 2 is larger, and the two material selection is extremely important, and the material of club 1 is GCr15, and the material of ball pivot seat 2 is pottery.Flow controller 5 is contained in the spheroid of club 1 head, adopts shallow cavity configuration at spherome surface.Calculate by performance, the ball socket bearing among the present invention is significantly improved at aspects such as bearing capacity and stability, compares with common gear shaping machine ball socket bearing, and bearing capacity increases considerably, and oil slick thickness and pressure area strengthen, and stability obviously improves.Trim ring 4 can be used to adjust the gap between spheroid and the ball pivot seat.Flow controller 5 is used for regulating the pressure versus flow that leads to hydraulic oil between spheroid and the ball pivot, behind host-initiated, relies on dynamic pressure bearing capacity that shallow chamber alias forms and static pressure bearing capacity to bear up and down axial force from the gear shaping main shaft.
When gear shaping machine works, club 1 rocks from side to side, angle is about ± and 7.5 °, ball pivot seat 2 turns round around the cutter spindle center, adopt NC Milling to go out four shallow chambeies among Fig. 1 on the spheroid main body 6 of club 1 head, the degree of depth of single oil pocket is gradual change, adopts the multi-cavity balanced configuration, reaches the homogenization of high pressure oil film and good resistance to shock.By flow controller 5, utilize the Throttle Principle of hydrostatic bearing, will be converted into laminar flow from the turbulent flow of external hydraulic oil, make to produce enough large static pressure in the pressure oil cavity, produce the oil film with bearing capacity at the spheroid junction plane.Club 1 rock from side to side and ball pivot seat 2 turning courses in, the spherome surface of relative sliding forms the wedge gap of convergence.The grinding of ball pivot seat 2 is divided into two stages, and the phase I is utilized ball arbitrfary point, surface and the equidistant principle of the centre of sphere, the grinding inner ball surface, and second stage is ground with the phase accessory, guarantees that point of contact is more than 25 o'clock.The restriction characteristic of four flow controllers is consistent as far as possible.Reconditioning trim ring 4 guarantees that the gap between spheroid and the ball pivot seat is 0.01-0.015.
Adopting the ball pivot seat of stupalith and adopting shallow cavity configuration at spheroid is core content of the present invention, and the gear shaping machine ball socket bearing of all employing similar structure all is considered to equivalence of the present invention and replaces.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (5)
1. a high speed gear shaper is with active and static pressure ball socket bearing structure, comprise club (1), ball pivot seat (2) and housing (3), the lower end of housing (3) links to each other with cutter spindle, the spheroid main body (6) of club (1) lower end is arranged in ball pivot seat (2), ball pivot seat (2) is installed in the fitting seat of housing (3) and by trim ring (4) and realizes adjusting along club (1) axial location and gap, the upper end of club (1) is stretched out outside the trim ring (4) and is linked to each other with crank, the center that it is characterized in that described club (1) is provided with oil hole (7), the centre of sphere of the through spheroid main body (6) of this oil hole (7), upward along it flow controller (5) is installed radially in spheroid main body (6), the oil inlet end of flow controller (5) communicates with the oil hole (7) of the through centre of sphere, the shallow annular chamber on the oil outlet end of flow controller (5) and spheroid main body (6) surface communicates, in order to make described shallow chamber bear up and down axial force from the gear shaping main shaft because of alias formation dynamic pressure bearing capacity and static pressure bearing capacity when spheroid main body (6) move; Described flow controller (5) is comprised of major diameter oilhole and the minor diameter oilhole of mutual perforation, the oil outlet end of described minor diameter oilhole communicates with the shallow annular chamber on spheroid main body (6) surface, and the oil inlet end of described major diameter oilhole is connected with the oil hole (7) of through spheroid main body (6) centre of sphere.
2. high speed gear shaper according to claim 1 is with active and static pressure ball socket bearing structure, the quantity that it is characterized in that the shallow annular chamber on described spheroid main body (6) surface equals 1/2 of described flow controller (5) quantity at least, separate or continuous by connecting groove between the adjacent shallow annular chamber, with the uniformity of further enhancing spheroid main body (6) surface lubrication oil content cloth.
3. high speed gear shaper according to claim 1 and 2 is characterized in that with active and static pressure ball socket bearing structure the degree of depth in the shallow annular chamber on described spheroid main body (6) surface is grading structure, and is larger the closer to the degree of depth in the shallow chamber that flow controller (5) is located.
4. high speed gear shaper according to claim 1 is with active and static pressure ball socket bearing structure, it is characterized in that wear body that described ball pivot seat (2) is made for stupalith or deposits wearing layer at the parent metal material surface.
5. high speed gear shaper according to claim 1 is with active and static pressure ball socket bearing structure, and the diameter that it is characterized in that described spheroid main body (6) is the 50-60 millimeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110153765 CN102221039B (en) | 2011-06-09 | 2011-06-09 | Dynamic and static pressure ball socket bearing structure for high speed gear shaper |
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| CN 201110153765 CN102221039B (en) | 2011-06-09 | 2011-06-09 | Dynamic and static pressure ball socket bearing structure for high speed gear shaper |
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| CN102221039B true CN102221039B (en) | 2013-04-10 |
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| CN102678734A (en) * | 2012-05-18 | 2012-09-19 | 中山市亚泰机械实业有限公司 | Connecting rod mechanism applied to engine |
| CN104459178B (en) * | 2014-12-05 | 2018-01-16 | 西安航空动力控制科技有限公司 | A kind of thimble for mechanical separator speed sensor |
| CN104500556B (en) * | 2014-12-18 | 2017-02-22 | 东南大学 | High-bearing static-pressure bulb articulated mechanism with internal feedback restrictor |
| CN104728255B (en) * | 2015-03-27 | 2017-05-03 | 东南大学 | Static pressure ball hinge adopting bidirectional inner feedback throttling technology |
| CN108453722B (en) * | 2018-03-29 | 2021-01-12 | 清华大学深圳研究生院 | Flexible mechanical arm based on elastic pipe |
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| CN2455326Y (en) * | 2000-12-23 | 2001-10-24 | 广西绿洲热能设备有限公司 | Cyclic evaporative concentrator for organic liquid |
| US7455470B2 (en) * | 2005-12-12 | 2008-11-25 | John Brodowski | Swivel ball bearing |
| CN201231359Y (en) * | 2008-08-05 | 2009-05-06 | 宜昌长机科技有限责任公司 | Tool-position up and down position automatic adjustment device of gear planer |
| CN101429967B (en) * | 2008-12-19 | 2010-09-15 | 北京天高智机技术开发公司 | Three-freedom double-layer oil film type spherical hinge |
| CN201373098Y (en) * | 2009-03-16 | 2009-12-30 | 江苏恒威机械制造有限公司 | Anti-tipping hydraulic-balance tile section structure for connection rod |
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