CN206608471U - A kind of pair of drive system regulating center bearing base unit - Google Patents

Abstract

A kind of pair of drive system regulating center bearing base unit, including two bolt flange formula cast-iron chocks and roller bearing units, it is characterized in that roller bearing units are single-row, the unit of plug and play, including bearing outer ring, the p-type sealing of bearing inner race and advance storing lubricating grease, roller bearing units pass through bearing outer ring, p-type is sealingly mounted in cast-iron chock, bearing outer ring outer surface is the sphere of high accuracy processing, used cooperatively with the bearing base inner surface of the cast-iron chock of corresponding high accuracy processing, it is not required to lubricate again, bearing inner race is positioned by being realized at a distance of 120 ° of 2 jackscrews on axle, ensure that bearing is fixedly positioning.The static angular that bearing block unit can compensate for axle is misaligned, and maximum compensation rate is ± 5 °, i.e., as positioning bearing, and be also applied for floating bearing in low speed, underloading, meet the particular/special requirement to bearing：Impact resistance, high rotating speed, large carrying capacity and life-span are high.

Description

A kind of pair of drive system regulating center bearing base unit

Technical field

The utility model is related to double lead-screw drive system, the regulating center bearing base unit belonged on the double drive systems of lathe.

Background technology

Gate-type Five-axis NC Machining Center, refers specifically to the Y-direction motion of VMC0875mu gate-type Five-axis NC Machining Centers, is crossbeam edge peace Two forward and backward movements of Y-direction guide rail on column both sides, Y-axis ball-screw is arranged in the outside of two Y-direction guide rails, i.e. Y-direction Double lead-screw driving is driven to, " center of gravity driving " has been achieved in that, driving can be made steady, reduces vibration, so as to improve adding for workpiece Work precision and surface smoothness, but guarantee assembly precision is also increased while possessing these advantages and maintains leading screw and bearing to make With the difficulty in life-span, linearity and the axiality requirement of single leading screw should be reached, when two leading screws of satisfaction work together again The depth of parallelism and planarity requirements.

Bearing with spherical outside surface is highly developed standardized element already, has been applied in each processing and manufacturing, but The maximum compensation rate of general self-aligning bearing is only ± 2.5 °, if lubricating condition it is bad will quickly because continuous abrasion and caused by machine Bed failure.

The content of the invention

The purpose of this utility model is to provide a kind of pair of drive system regulating center bearing base unit, it is not necessary to lubricated again and There is more large aligning angle degree, solve the depth of parallelism and flatness problems with respect present in existing double lead-screw actuation techniques.

The technical solution of the utility model is：

A kind of pair of drive system regulating center bearing base unit, including two bolt flange formula cast-iron chocks and spherical outside surface ball axle Hold, it is characterised in that roller bearing units are single-row, plug and play units, including bearing outer ring, bearing inner race and storage in advance The p-type sealing of lubricating grease is deposited, roller bearing units are sealingly mounted in cast-iron chock by bearing outer ring, p-type, bearing outer ring Outer surface is the sphere of high accuracy processing, and coordinating with the bearing base inner surface of the cast-iron chock of corresponding high accuracy processing makes With being not required to lubricate again, bearing inner race is positioned by realizing at a distance of 120 ° of 2 jackscrews on axle, it is ensured that bearing is fixedly positioning.

The beneficial effects of the utility model are：

The maximum compensation rate of the regulating center bearing base unit is ± 5 °, and bearing both sides are sealed using p-type, in advance storage lubrication Fat, in bearing normal working life, it is not necessary to lubricated again.Increase aligning scope and solve the feelings of insufficient lubrication Condition, reduces abrasion, wear-resisting and shock resistance, it is ensured that machine tool accuracy, extends the service life of bearing and associated components.

The utility model adds by the axle of VMC0875mu gate-types five of Zhong Jieli bonus point company of Shenyang Machine Tool Co., Ltd Work center probationary certificate, it is a kind of simple in construction, with low cost, dependable performance, regulating center bearing base unit flexible for installation.For The runnability and precision parameter for improving the lathe have played significant role.

Brief description of the drawings

Fig. 1 is the utility model structural representation；

Fig. 2 is Fig. 1 right view；

Fig. 3 is that p-type seals 9 structural representations.

In figure：1st, roller bearing units；2nd, bearing inner race；3rd, bearing outer ring；4th, cast-iron chock；5th, table in bearing block Face；6th, jackscrew；7th, bearing outside surface；8th, technology groove；9th, p-type is sealed；10th, bearing block fixing hole；11st, retainer R templates；12、 Clamping plate；13rd, nitrile rubber bar；14th, lubricating grease.

Embodiment

Referring to Fig. 1,2, this pair of drive system regulating center bearing base unit, including two bolt flange formula cast-iron chocks and outer Spherical ball bearing, it is characterised in that roller bearing units 1 are arranged in cast-iron chock 4 by bearing outer ring 3, p-type sealing 9, The bearing outside surface 7 of bearing with spherical outside surface 1 and the bearing base inner surface 5 of cast-iron chock 4 are high-precision machined surface, bearing outside diameter Using PN grades of tolerances, meet standard DIN 620-2, the surface of cast-iron chock meets GTB 14DIN 1680-2.Spherical outside surface ball Bearing 1 includes bearing outer ring 3, p-type sealing 9 and bearing inner race 2, and the bearing both sides between bearing inner race 2 and bearing outer ring 3 are installed Space is reserved for work between bearing outside surface 7 after two sets of p-type sealings 9, the bearing base inner surface 5 of cast-iron chock 4 and assembling Skill groove 8.There is a radial direction top thread 6 part that the top of bearing inner race 2 is higher by cast-iron chock 4, bearing inner race 2 by a distance of 120 ° 2 Individual jackscrew 6 is realized and positioned on axle, it is ensured that bearing is fixedly positioning, and the bottom of jackscrew 6 is the closely-pitched latching member of spill；Bearing inner race 2 Two annular grooves are arranged at bottom, and staying at lubricating oil outlet, the radial symmetric extension of cast-iron chock 4 has bearing block fixing hole 10.Spherical outside surface The bearing outside surface 7 of ball bearing 1 and the high accuracy of bearing base inner surface 5 of cast-iron chock 4 coordinate, and roller bearing units 1 are in casting Rotary work in iron bearing block 4, realizes that automatic aligning is acted on, and maximum compensation rate is ± 5 °.

P-type sealing 9 between bearing outer ring 3 and bearing inner race 2 is galvanized sheet metal gasket construction, sees Fig. 3, P Type seals 9 structures：The retainer R templates 11 and clamping plate 12 being made up of stamping steel plate, the side of retainer R templates 11 is straight, be bent into Straight line is downward after semi arch；The big minister's degree of clamping plate 12 is straight line, and one end tiltedly, to the direction of bearing inner race 2 extends, retainer R templates Nitrile rubber bar 13, retainer R templates 11 and bearing outer ring 3 and the intracavitary of the formation of bearing inner race 2 are fixed between 11 and clamping plate 12 Advance storing lubricating grease.Retainer R templates 11 are embedded in the semicircular arc notch at the edge of bearing outer ring 3, sealing lip end is placed in axle Hold in the annular groove of inner ring 2, by sealing lip axial pretightening, slowly disengage lubricating grease.

Claims (3)

1. a kind of pair of drive system regulating center bearing base unit, including two bolt flange formula cast-iron chocks, race ring and spherical outside surface Ball bearing, it is characterised in that roller bearing units (1) are in single-row, plug and play unit, including bearing outer ring (3), bearing The p-type sealing (9) of the advance storing lubricating grease of (2) and upper and lower side therein is enclosed, roller bearing units (1) pass through bearing outer ring (3), p-type sealing (9) is arranged in cast-iron chock (4), and bearing outer ring outer surface (7) are the spheres of high accuracy processing, with phase The bearing base inner surface (5) of the cast-iron chock for the high accuracy processing answered is used cooperatively, and is not required to lubricate again, bearing inner race (2) leads to 2 jackscrews (6) crossed at a distance of 120 ° are realized and positioned on axle, it is ensured that bearing is fixedly positioning.

2. a kind of pair of drive system regulating center bearing base unit according to claim 1, it is characterised in that：The bottom of jackscrew (6) Portion is the closely-pitched latching member of spill.

3. a kind of pair of drive system regulating center bearing base unit according to claim 1, it is characterised in that：P-type seals (9) Galvanized sheet metal gasket construction：The retainer R templates (11) and clamping plate (12) being made up of stamping steel plate, retainer R templates (11) Side is straight, it is downward to be bent into straight line after semi arch；The big minister's degree of clamping plate (12) is straight line, one end tiltedly, to bearing inner race (2) direction In the middle of extension, retainer R templates (11) and clamping plate (12) outside fixed nitrile rubber bar (13), retainer R templates (11) and bearing The advance storing lubricating grease of intracavitary (14) of (3) and bearing inner race (2) formation is enclosed, nitrile rubber bar (13) lower end forms sealing lip； Retainer R templates (11) are embedded in the semicircular arc notch at bearing outer ring (3) edge, sealing lip end is placed in bearing inner race (2) ring In groove, by sealing lip axial pretightening.