CN203917952U - Main axle unit - Google Patents
Main axle unit Download PDFInfo
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- CN203917952U CN203917952U CN201420302307.2U CN201420302307U CN203917952U CN 203917952 U CN203917952 U CN 203917952U CN 201420302307 U CN201420302307 U CN 201420302307U CN 203917952 U CN203917952 U CN 203917952U
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- drag hook
- main
- spindle drum
- workpiece
- sleeve
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Abstract
This technology provides a kind of sleeve swinging with respect to spindle drum of having set up, and structure is ingenious, the main axle unit that the scope of application is wide.It comprises spindle drum, rotates the main shaft being arranged on spindle drum; Main shaft is the hollow shaft that one end has taper hole; In main shaft, be provided with rod assembly; Rod assembly comprises pull bar, is sleeved on the dished spring assembly of pull bar periphery; Pull bar is connected with pulling claw in the one end near taper hole, and dished spring assembly is in the time of normality, and pull bar pulls pulling claw to make the state of pulling claw in radial contraction; On spindle drum, be provided with pushing drawing rod and overcome the elastic force of dished spring assembly and mobile pull bar pushing mechanism; It also comprises a sleeve coaxial with main shaft, and main shaft rotates and is arranged in sleeve, and sleeve rotates and is arranged on spindle drum; On spindle drum, be provided with the sleeve driving mechanism that drive sleeve is rotated with respect to spindle drum; On spindle drum, be provided with the main shaft drives mechanism that drive shaft is rotated with respect to spindle drum.
Description
Technical field
This technology relates to the main axle unit in machining equipment.
Background technology
Current, in machining equipment, especially numerical controlled machinery process equipment, main axle unit comprises support, rotates the main shaft being arranged on support; Main shaft is the hollow shaft that one end has taper hole; In main shaft, be provided with rod assembly; Rod assembly comprises pull bar, is sleeved on the dished spring assembly of pull bar periphery; Pull bar is connected with pulling claw in the one end near taper hole, and dished spring assembly is in the time of normality, and pull bar pulls pulling claw to make the state of pulling claw in radial contraction; On support, be provided with pushing drawing rod and overcome the elastic force of dished spring assembly and mobile pull bar pushing mechanism; On support, be provided with the main shaft drives mechanism that drive shaft is rotated.
When use, pull bar in rod assembly pulls pulling claw under the effect of dished spring assembly, pulling claw is moved axially along main shaft, the axially movable while radial contraction of pulling claw and promptly stretch into the blind rivet in pulling claw, and blind rivet is to be fixed on the knife bar that cutter is installed, like this, knife bar just moves axially with the taper hole on main shaft and coordinates, and has realized the fixing of knife bar and main shaft.Rotate by main shaft drives mechanism drive shaft, knife bar, cutter just carries out cutting operation to workpiece.
The main deficiency of existing main axle unit is: only have main shaft under the drive of main shaft drives mechanism, to turn round, do not have other parts to swing with respect to support, limited its range of work.
Summary of the invention
The object of this technology is to provide a kind of sleeve swinging with respect to spindle drum of having set up, and structure is ingenious, the main axle unit that the scope of application is wide.
The main axle unit of this technology, comprises spindle drum, rotates the main shaft being arranged on spindle drum; Main shaft is the hollow shaft that one end has taper hole; In main shaft, be provided with rod assembly; Rod assembly comprises pull bar, is sleeved on the dished spring assembly of pull bar periphery; Pull bar is connected with pulling claw in the one end near taper hole, and dished spring assembly is in the time of normality, and pull bar pulls pulling claw to make the state of pulling claw in radial contraction; On spindle drum, be provided with pushing drawing rod and overcome the elastic force of dished spring assembly and mobile pull bar pushing mechanism; It also comprises a sleeve coaxial with main shaft, and main shaft rotates and is arranged in sleeve, and sleeve rotates and is arranged on spindle drum; On spindle drum, be provided with the sleeve driving mechanism that drive sleeve is rotated with respect to spindle drum; On spindle drum, be provided with the main shaft drives mechanism that drive shaft is rotated with respect to spindle drum.
Above-mentioned main axle unit, sleeve driving mechanism comprises the worm gear being looped around on sleeve, the rotation coordinating with worm gear is arranged on the worm screw on spindle drum, the servomotor that drives worm screw to rotate.Can accurately control the rotational angle of worm screw by servomotor, thereby control the rotational angle of worm gear and sleeve.In addition, worm and gear self-locking is effective, in the time that servomotor does not rotate, can effectively prevent the rotation of sleeve.
Above-mentioned main axle unit, main shaft drives mechanism comprise be arranged on main shaft one end belt pulley, be arranged on the spindle motor on spindle drum, between spindle motor and belt pulley by band transmission.
In this technology, the syndeton of rod assembly, pulling claw, pull bar pushing mechanism, pull bar and main shaft belongs to prior art, knife bar and main shaft can be fixed by rod assembly, drives knife bar to rotate by main shaft.Certainly, by pull bar pushing mechanism, oppositely pushing drawing rod, pulling claw, in axially movable while radial dilatation, unclamps the blind rivet being fixed on knife bar, like this with regard to replaceable knife bar.
The beneficial effect of this main axle unit: by sleeve driving mechanism, can drive sleeve swing with respect to spindle drum.Can be driven and be needed the workpiece of processing or other parts that need to swing to swing by sleeve like this, expand the function of main axle unit, the scope of application be wide.Owing to thering is rod assembly and the main shaft with taper hole, so this main axle unit can coordinate from different cutting units (as the handle of a knife of Digit Control Machine Tool, grinding unit, milling unit etc.), as long as cutting unit has the taper-shank arbor coordinating with taper hole and is fixed on the blind rivet coordinating with pulling claw on taper-shank arbor, therefore the standard component that this main axle unit can be said, the cutting unit matching with this main axle unit can exchange, and has expanded application and the range of work of this main axle unit.Meanwhile, this main axle unit structure is ingenious, and volume is little, dependable performance.
Above-mentioned main axle unit is provided with workpiece pulling mechanism on spindle drum, and workpiece pulling mechanism comprises that at least two for hooking the drag hook of workpiece, the drag hook driving mechanism that drives drag hook being parallel to main-shaft axis direction and moving; With in sleeve end face, be provided with the positioner that workpiece is positioned in the circumferential direction of line centered by main-shaft axis; Drag hook hooks workpiece, and drag hook driving mechanism drives workpiece to move along main-shaft axis by drag hook, and workpiece is clamped in sleeve end face.
By sleeve driving mechanism, can drive sleeve swing with respect to spindle drum.Can be driven and be needed the workpiece of processing or other parts that need to swing to swing by sleeve like this, expand the function of main axle unit, the scope of application be wide.Owing to thering is rod assembly and the main shaft with taper hole, so this main axle unit can coordinate from different cutting units (as the handle of a knife of Digit Control Machine Tool, as grinding unit, milling unit etc.), as long as cutting unit has the taper-shank arbor coordinating with taper hole and is fixed on the blind rivet coordinating with pulling claw on taper-shank arbor, therefore the standard component that this main axle unit can be said, the cutting unit matching with this main axle unit can exchange, and has expanded application and the range of work of this main axle unit.So this main axle unit highly versatile, can be described as a kind of modular unit.This main axle unit, the scope of application is wide, and structure is ingenious, and volume is little, dependable performance.When need to unloading or changing cutting unit, by pull bar pushing mechanism, oppositely pushing drawing rod, pulling claw, in axially movable while radial dilatation, unclamps the blind rivet being fixed on taper-shank arbor, like this with regard to detachable lower cutting unit.
Above-mentioned main axle unit, drag hook and drag hook driving mechanism are hinged, make drag hook swing around hinged place and make drag hook depart from the flexible member of workpiece between drag hook and spindle drum while being connected with normality.In the action of drag hook driving mechanism, while unclamping drag hook, flexible member can make drag hook swing around hinged place and depart from workpiece, and when drag hook does not need to hook workpiece like this, flexible member can automatically make drag hook swing and unclamp workpiece, more convenient to operate.
Improve as the one to above-mentioned machining cell, when normality, flexible member makes drag hook swing laterally and make drag hook depart from workpiece in the radial direction of main shaft around hinged place; It also comprises a drag hook oscillation adjustment ring flat-plate moving along main-shaft axis direction; Drag hook passes in drag hook oscillation adjustment ring flat-plate; When drag hook hooks workpiece, when workpiece is clamped in sleeve end face, drag hook contacts with the inner peripheral surface of oscillation adjustment ring flat-plate and prevents that drag hook from departing from workpiece.Drag hook oscillation adjustment ring flat-plate can limit the swing of drag hook, in the time not needing drag hook to swing laterally, drag hook oscillation adjustment ring flat-plate moves to drag hook along main-shaft axis and hooks location of workpiece place, because drag hook contacts with the medial surface of drag hook oscillation adjustment ring flat-plate, drag hook can not swing laterally, all the time in hooking the state of workpiece, ensured security.Need to unclamp drag hook time, need first mobile drag hook oscillation adjustment ring flat-plate, make drag hook oscillation adjustment ring flat-plate can not hinder drag hook to laterally rotate, like this, in the time that drag hook driving mechanism oppositely moves, drag hook just automatically outwards swings under the effect of flexible member, unclamps workpiece.That is to say, when drag hook hooks workpiece, when workpiece is clamped in sleeve end face, drag hook contacts with the inner peripheral surface of oscillation adjustment ring flat-plate and prevents that drag hook from departing from workpiece; Need to unclamp drag hook time, drag hook oscillation adjustment ring flat-plate moves with respect to drag hook, and the inner peripheral surface of oscillation adjustment ring flat-plate can not hinder the effect lower swing of drag hook at flexible member.
For in the time unclamping drag hook, reduce the displacement in main-shaft axis direction of drag hook oscillation adjustment ring flat-plate, or in order to unclamp drag hook the not mobile drag hook oscillation adjustment ring flat-plate in the situation that, above-mentioned machining cell, drag hook is connected with drag hook driving mechanism by guide post, and drag hook and drag hook driving mechanism are all hinged with guide post; Guide post is slidably arranged in and is arranged in guide groove on spindle drum, angled with main-shaft axis; Drag hook driving mechanism action, band moving slide-bar moves along guide groove, in drag hook is being parallel to main-shaft axis direction and moves under the drive of slide bar and flexible member, swings in the radial direction of main shaft around slide bar.Owing to thering is the guide groove angled with main-shaft axis, in drag hook is being parallel to main-shaft axis direction and is moving under the drive of drag hook driving mechanism, swing in the radial direction of main shaft around slide bar, so in the time that needs unclamp drag hook, drag hook oscillation adjustment ring flat-plate only need to move very little distance with respect to drag hook, the even not mobile swing that also can not hinder drag hook.When drag hook oscillation adjustment ring flat-plate moves, can also to hook the position of workpiece corresponding with drag hook, prevent that drag hook from departing from workpiece.Described machining cell, drag hook oscillation adjustment ring flat-plate is connected with driving its ring flat-plate driving mechanism moving along main-shaft axis direction.
As improving above-mentioned machining cell is another kind of, when normality, flexible member makes drag hook swing laterally and make drag hook depart from workpiece in the radial direction of main shaft around hinged place; It also comprises drag hook oscillation adjustment ring flat-plate; Drag hook passes in drag hook oscillation adjustment ring flat-plate; When drag hook hooks workpiece, when workpiece is clamped in sleeve end face, drag hook contacts with the inner peripheral surface of oscillation adjustment ring flat-plate and prevents that drag hook from departing from workpiece; Drag hook is connected with drag hook driving mechanism by guide post, and drag hook and drag hook driving mechanism are all hinged with guide post; Guide post is slidably arranged in and is arranged in guide groove on spindle drum, angled with main-shaft axis; Drag hook driving mechanism action, band moving slide-bar moves along guide groove, in drag hook is being parallel to main-shaft axis direction and moves under the drive of slide bar and flexible member, swings in the radial direction of main shaft around slide bar.Owing to thering is the guide groove angled with main-shaft axis, in drag hook is being parallel to main-shaft axis direction and is moving under the drive of drag hook driving mechanism, swing in the radial direction of main shaft around slide bar, so in the time that needs unclamp drag hook, be fixed on not mobile drag hook oscillation adjustment ring flat-plate on spindle drum or workpiece and can not hinder the swing of drag hook.Certainly, preferably, drag hook oscillation adjustment ring flat-plate can move along main-shaft axis direction.When drag hook oscillation adjustment ring flat-plate moves, can also to hook the position of workpiece corresponding with drag hook, prevent that drag hook from departing from workpiece.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of main axle unit.
Fig. 2 is the part stereogram of the main axle unit of Fig. 1.
Fig. 3 is the schematic diagram of outer milling unit.
Fig. 4 is the schematic diagram of interior milling unit.
Fig. 5 is the schematic diagram of machining cell (main axle unit+outer milling unit).
Fig. 6 is the partial perspective view of the outer milling unit in Fig. 5.
Fig. 7 is the schematic diagram of main axle unit.
Fig. 8 is the stereogram of main axle unit.
Fig. 9 is that drag hook, the drag hook in main axle unit drives the schematic perspective views such as oil cylinder.
Figure 10 is the schematic diagram of machining cell (main axle unit+interior milling unit+support unit).
Figure 11 is the part stereogram of main axle unit and interior milling unit.
Figure 12 is the part stereogram of interior milling unit.
Figure 13 is the schematic diagram of support unit.
Figure 14 is the enlarged drawing of drag hook, thrust bearing etc. in Figure 10.
Figure 15 is the partial enlarged drawing that the support unit in Figure 10 is connected with interior milling unit.。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this technology is described further.
Embodiment 1: main axle unit (actuating unit+swing mechanism)
Referring to the main axle unit 1 shown in Fig. 1,2, main shaft 12 is rotated and is arranged in the sleeve coaxial with main shaft 15 by bearing, and sleeve is rotated and is arranged on spindle drum 11 by bearing.On spindle drum, be provided with the main shaft drives mechanism 17 that drive sleeve is rotated with respect to spindle drum with respect to sleeve driving mechanism 16 and the drive shaft of spindle drum rotation.Sleeve driving mechanism 16 comprises the worm gear 161 being looped around on sleeve, and the rotation coordinating with worm gear is arranged on the worm screw 162 on spindle drum, the servomotor 163 that drives worm screw to rotate.
Main shaft drives mechanism 17 comprise be arranged on main shaft one end belt pulley 171, be arranged on the spindle motor 172 on spindle drum, between spindle motor and belt pulley, be with transmission by belt 173.
Main shaft is the hollow shaft that one end has taper hole 121.In main shaft, be provided with rod assembly 13.Rod assembly comprises pull bar 131, is sleeved on the dished spring assembly 132 of pull bar periphery; Pull bar is connected with pulling claw 133 in the one end near taper hole, and dished spring assembly is in the time of normality, and pull bar pulls pulling claw to make the state of pulling claw in radial contraction.On spindle drum, be provided with pushing drawing rod and overcome the elastic force of dished spring assembly and mobile pull bar pushing mechanism (as cylinder) 14.
The beneficial effect of this main axle unit: by sleeve driving mechanism, can drive sleeve swing with respect to spindle drum.Can be driven and be needed the workpiece of processing or other parts that need to swing to swing by sleeve like this, expand the function of main axle unit, the scope of application be wide.Owing to thering is rod assembly and the main shaft with taper hole, so this main axle unit can coordinate from different cutting units (as the handle of a knife of Digit Control Machine Tool, as grinding unit, milling unit etc.), as long as cutting unit has the taper-shank arbor coordinating with taper hole and is fixed on the blind rivet coordinating with pulling claw on taper-shank arbor, therefore the standard component that this main axle unit can be said, the cutting unit matching with this main axle unit can exchange, and has expanded application and the range of work of this main axle unit.So this main axle unit highly versatile, can be described as a kind of modular unit.This main axle unit, the scope of application is wide, and structure is ingenious, and volume is little, dependable performance.
When need to unloading or changing cutting unit, by pull bar pushing mechanism, oppositely pushing drawing rod, pulling claw, in axially movable while radial dilatation, unclamps the blind rivet being fixed on taper-shank arbor, like this with regard to detachable lower cutting unit.
Embodiment 2: main axle unit (actuating unit+swing mechanism+drag hook+drag hook limiting plate).
Described in embodiment 2, main axle unit is on the basis of embodiment 1, to have increased locating piece 18, workpiece pulling mechanism 2 and drag hook swing regulation mechanism 3.Referring to Fig. 7-9, on spindle drum, be provided with workpiece pulling mechanism, workpiece pulling mechanism 2 comprises that two for hooking the drag hook 21 of workpiece, drag hook drives oil cylinder 22; Drag hook drives the cylinder body of oil cylinder 2 to be hinged on spindle drum.
Drag hook upper end and drag hook drive the piston rod of oil cylinder 2 all hinged with guide post 24, and guide post is slidably arranged in and is arranged in guide groove 25 on spindle drum, angled with main-shaft axis.Be connected with normality between drag hook middle and upper part and spindle drum time, make drag hook around the extension spring 26 swinging with the hinged place of guide post.
Two ring flat-plates driving oil cylinders 32 that drag hook swing regulation mechanism 3 comprises drag hook oscillation adjustment ring flat-plate 31, drives drag hook oscillation adjustment ring flat-plate 31 to move along main-shaft axis direction.Ring flat-plate drives the cylinder body of oil cylinder 32 to be arranged on spindle drum, and its piston rod is connected with drag hook oscillation adjustment ring flat-plate 31.There are two rollers 33 inner side of drag hook oscillation adjustment ring flat-plate 31, and drag hook passes in drag hook oscillation adjustment ring flat-plate.Under 26 effect of extension spring, keep in touch with roller all the time in the outside 211 of drag hook.
In sleeve end face, fix end cap 19, on end cap 19, be provided with the locating piece 18 of two projections that workpiece is positioned in the circumferential direction of line centered by main-shaft axis.
After workpiece is located in the circumferential direction of two locating pieces line centered by main-shaft axis, drag hook drives cylinder action, and its piston rod moves up, and band moving slide-bar moves along guide groove, and is upwards outwards moving drag hook upper end; Meanwhile, ring flat-plate drives oil cylinder 32 to move, and drives drag hook oscillation adjustment ring flat-plate 31 to move down, spacing due to pair of rollers drag hook outside, and the lower end of drag hook can only upwards move inward.Like this, drag hook, along the axially movable while of main shaft, swings in the radial direction of main shaft, and the lower end of two drag hooks is just mutually drawn close and hooked workpiece and drive workpiece to move up, and workpiece is clamped in sleeve end face.
Need to unclamp workpiece time, drag hook drives cylinder action, and its piston rod moves down, and band moving slide-bar moves along guide groove, and drag hook upper end moves inward downwards; Simultaneously, ring flat-plate drives oil cylinder 32 to move, drive drag hook oscillation adjustment ring flat-plate 31 to move up, due to the effect of extension spring, the lower end of drag hook in moving down, outwards move (roller all the time with drag hook outside side contacts), like this, drag hook is along the axially movable while of main shaft, swing in the radial direction of main shaft, the lower end of two drag hooks just mutually away from and unclamp workpiece, workpiece can move down.
Swing with respect to spindle drum by sleeve driving mechanism drive sleeve, sleeve just turns an angle around main-shaft axis, and because locating piece is in sleeve end face, locating piece is rotated certain angle.By the location of locating piece, workpiece is just equivalent to again be positioned after main-shaft axis turns an angle like this.In the process that workpiece is positioned again, main shaft is still fixed into one with taper-shank arbor under the effect of rod assembly, and without main shaft and taper-shank arbor are come off, easy to operate time, also without tool setting again, has ensured machining accuracy.
Embodiment 3: machining cell (main axle unit+outer milling unit)
Shown in Figure 3, this machining cell mainly comprises main axle unit 1, outer milling unit 4.
Referring to Fig. 7-9, main axle unit 1 mainly comprises sleeve driving mechanism 16, main shaft drives mechanism 17, housing pulling mechanism 2 and drag hook swing regulation mechanism 3.
Main shaft 12 is rotated and is arranged in the sleeve coaxial with main shaft 15 by bearing, and sleeve is rotated and is arranged on spindle drum 11 by bearing.On spindle drum, be provided with the main shaft drives mechanism 17 that drive sleeve is rotated with respect to spindle drum with respect to sleeve driving mechanism 16 and the drive shaft of spindle drum rotation.Sleeve driving mechanism 16 comprises the worm gear 161 being looped around on sleeve, and the rotation coordinating with worm gear is arranged on the worm screw 162 on spindle drum, the servomotor 163 that drives worm screw to rotate.
Main shaft drives mechanism 17 comprise be arranged on main shaft one end belt pulley 171, be arranged on the spindle motor 172 on spindle drum, between spindle motor and belt pulley by band transmission.
Main shaft is the hollow shaft that one end has taper hole 121.In main shaft, be provided with rod assembly 13.Rod assembly comprises pull bar 131, is sleeved on the dished spring assembly 132 of pull bar periphery; Pull bar is connected with pulling claw 133 in the one end near taper hole, and dished spring assembly is in the time of normality, and pull bar pulls pulling claw to make the state of pulling claw in radial contraction.On spindle drum, be provided with pushing drawing rod and overcome the elastic force of dished spring assembly and mobile pull bar pushing mechanism (as cylinder) 14.
On spindle drum, be provided with housing pulling mechanism, housing pulling mechanism 2 comprises that two for hooking the drag hook 21 of the flange 413 on housing 45, and drag hook drives oil cylinder 22; Drag hook drives the cylinder body of oil cylinder 2 to be hinged on spindle drum.
Drag hook upper end and drag hook drive the piston rod of oil cylinder all hinged with guide post 24, and guide post is slidably arranged in and is arranged in guide groove 25 on spindle drum, angled with main-shaft axis.Be connected with normality between drag hook middle and upper part and spindle drum time, make drag hook around the extension spring 26 swinging with the hinged place of guide post.
Two ring flat-plates driving oil cylinders 32 that drag hook swing regulation mechanism 3 comprises drag hook oscillation adjustment ring flat-plate 31, drives drag hook oscillation adjustment ring flat-plate 31 to move along main-shaft axis direction.Ring flat-plate drives the cylinder body of oil cylinder 32 to be arranged on spindle drum, and its piston rod is connected with drag hook oscillation adjustment ring flat-plate 31.There are two rollers 33 inner side of drag hook oscillation adjustment ring flat-plate 31, and drag hook passes in drag hook oscillation adjustment ring flat-plate.Under 26 effect of extension spring, keep in touch with roller all the time in the outside 211 of drag hook.
In sleeve end face, fix end cap 19, on end cap 19, be provided with the locating piece 18 of two projections that housing is positioned in the circumferential direction of line centered by main-shaft axis.
Referring to Fig. 3,6, in outer milling unit 4, taper-shank arbor 41, transition axis 42, output shaft 43 are all rotated and are arranged on housing 45 by bearing, and transition axis is parallel with output shaft.Between transition axis and taper-shank arbor, pass through bevel-gear sett 47 engaged transmission.Between transition axis and output shaft by a pair of gear 48 engaged transmission.Multiple outer milling cutters 44 are set in the periphery of output shaft.Housing top has flange 413.
Taper-shank arbor upper end has and coordinates cone 411 with taper hole, is fixed with the blind rivet 46 that can stretch in pulling claw in cone upper end.
Taper-shank arbor axis and output shaft intersect vertical axis, multiple outer milling cutters 44 are positioned on a cross section of output shaft, and this cross section and taper-shank arbor axis are coplanar.On the housing end face relative with being fixed on end cap 19 in sleeve end face, be provided with two with the corresponding groove 451 of locating piece.When locating piece 18 extend into groove 451 when interior, in the circumferential direction of housing line centered by main-shaft axis, be positioned.
Referring to Fig. 5,6, on the main shaft end face of taper hole 121 both sides, there are two to be parallel to the lug boss 122 that main-shaft axis extends; On the taper-shank arbor of cone 411 both sides, have two and the corresponding recess 412 of lug boss 122.In the time that cone coordinates with taper hole, lug boss stretches into recess and with recess and coordinates.Main shaft to recess transmitting torque, rotates taper-shank arbor by lug boss, to overcome main shaft by the taper hole 121 and the less deficiency of cone 411 transmitting torques that coordinate.
When use, blind rivet stretches into pulling claw, pulls blind rivet that the cone of taper-shank arbor and the taper hole of main shaft are coordinated by rod assembly, and taper-shank arbor and main shaft form one, simultaneously the corresponding recess 412 of lug boss 122.Locating piece 18 stretches in groove 451, and housing is located in the circumferential direction of two locating pieces line centered by main-shaft axis, and drag hook drives cylinder action, and its piston rod moves up, and band moving slide-bar moves along guide groove, and is upwards outwards moving drag hook upper end; Meanwhile, ring flat-plate drives oil cylinder 32 to move, and drives drag hook oscillation adjustment ring flat-plate 31 to move down, spacing due to pair of rollers drag hook outside, and the lower end of drag hook can only upwards move inward.Like this, drag hook, along the axially movable while of main shaft, swings in the radial direction of main shaft, and the lower end of two drag hooks is just mutually drawn close and hooked housing and drive housing to move up, and housing is clamped in sleeve end face.By main shaft drives mechanism successively drive shaft, taper-shank arbor, output shaft rotation, be positioned at the just revolution of outer milling cutter on output shaft, realize cutting movement.
Outside need to swinging in the circumferential direction of line centered by main-shaft axis, when milling unit, drag hook drives cylinder action, and its piston rod moves down, and band moving slide-bar moves along guide groove, and drag hook upper end moves inward downwards; Simultaneously, ring flat-plate drives oil cylinder 32 to move, drive drag hook oscillation adjustment ring flat-plate 31 to move up, due to the effect of extension spring, the lower end of drag hook in moving down, outwards move (roller all the time with drag hook outside side contacts), like this, drag hook is along the axially movable while of main shaft, swing in the radial direction of main shaft, the lower end of two drag hooks just mutually away from and unclamp housing.
Swing with respect to spindle drum by sleeve driving mechanism drive sleeve, sleeve just turns an angle around main-shaft axis, and because locating piece is positioned on the end cap being fixed in sleeve end face, locating piece is rotated certain angle.By the location of locating piece, housing is just equivalent to again be positioned after main-shaft axis turns an angle like this.In the process that housing is positioned again, main shaft is still fixed into one with taper-shank arbor under the effect of rod assembly, and without main shaft and taper-shank arbor are come off, easy to operate.When housing rotates, housing rotates around main-shaft axis together with output shaft, and output shaft axis keeps vertical with main-shaft axis all the time, the cross section at the multiple outer milling cutter place on output shaft is coplanar with main-shaft axis all the time, like this, central point (intersection point of output shaft axis and the main-shaft axis) invariant position of rotating surface of milling cutter (also can be said, outer milling cutter is constant with respect to the height of workpiece to be machined), that is to say, after housing and output shaft rotation, can process without tool setting again, ensure machining accuracy.
Embodiment 4: machining cell (main axle unit+interior milling unit+support unit)
Shown in Figure 10, this machining cell mainly comprises main axle unit 1, interior milling unit 5, support unit 6.
Referring to Fig. 7-9,11,12, main axle unit 1 mainly comprises sleeve driving mechanism 16, main shaft drives mechanism 17, housing pulling mechanism 2, drag hook swing regulation mechanism 3.
Main shaft 12 is rotated and is arranged in the sleeve coaxial with main shaft 15 by bearing, and sleeve is rotated and is arranged on spindle drum 11 by bearing.On spindle drum, be provided with the main shaft drives mechanism 17 that drive sleeve is rotated with respect to spindle drum with respect to sleeve driving mechanism 16 and the drive shaft of spindle drum rotation.Sleeve driving mechanism 16 comprises the worm gear 161 being looped around on sleeve, and the rotation coordinating with worm gear is arranged on the worm screw 162 on spindle drum, the servomotor 163 that drives worm screw to rotate.
Main shaft drives mechanism 17 comprise be arranged on main shaft one end belt pulley 171, be arranged on the spindle motor 172 on spindle drum, between spindle motor and belt pulley by band transmission.
Main shaft is the hollow shaft that one end has taper hole 121.In main shaft, be provided with rod assembly 13.Rod assembly comprises pull bar 131, is sleeved on the dished spring assembly 132 of pull bar periphery; Pull bar is connected with pulling claw 133 in the one end near taper hole, and dished spring assembly is in the time of normality, and pull bar pulls pulling claw to make the state of pulling claw in radial contraction.On spindle drum, be provided with pushing drawing rod and overcome the elastic force of dished spring assembly and mobile pull bar pushing mechanism (as cylinder) 14.
On spindle drum, be provided with housing pulling mechanism, housing pulling mechanism 2 comprises that two for hooking the drag hook 21 of the flange 513 on housing, and drag hook drives oil cylinder 22; Drag hook drives the cylinder body of oil cylinder 2 to be hinged on spindle drum.
Drag hook upper end and drag hook drive the piston rod of oil cylinder all hinged with guide post 24, and guide post is slidably arranged in and is arranged in guide groove 25 on spindle drum, angled with main-shaft axis.Be connected with normality between drag hook middle and upper part and spindle drum time, make drag hook around the extension spring 26 swinging with the hinged place of guide post.
Two ring flat-plates driving oil cylinders 32 that drag hook swing regulation mechanism 3 comprises drag hook oscillation adjustment ring flat-plate 31, drives drag hook oscillation adjustment ring flat-plate 31 to move along main-shaft axis direction.Ring flat-plate drives the cylinder body of oil cylinder 32 to be arranged on spindle drum, and its piston rod is connected with drag hook oscillation adjustment ring flat-plate 31.There are two rollers 33 inner side of drag hook oscillation adjustment ring flat-plate 31, and drag hook passes in drag hook oscillation adjustment ring flat-plate.Under 26 effect of extension spring, keep in touch with roller all the time in the outside 211 of drag hook.
In sleeve end face, fix end cap 19, on end cap 19, be provided with the locating piece 18 of two projections that housing is positioned in the circumferential direction of line centered by main-shaft axis.
Referring to Fig. 4,12, in interior milling unit 5, taper-shank arbor 51, transition axis 52, bridge shaft 58, output shaft 53 are all rotated and are arranged on housing 55 by bearing, and transition axis is parallel with output shaft.Between transition axis and taper-shank arbor, pass through bevel-gear sett 57 engaged transmission.The periphery of output shaft is fixed with output gear 501, and one end of transition axis is fixed with transition gear 502, is fixed with carrier gear 503 on bridge shaft 58.Carrier gear 503 engages with output gear 501, transition gear 502 respectively.Output shaft is hollow shaft, and multiple interior milling cutters 54 are set on the inwall of output shaft.
Taper-shank arbor upper end has and coordinates cone 511 with taper hole, is fixed with the blind rivet 56 that can stretch in pulling claw in cone upper end.
Taper-shank arbor axis and output shaft intersect vertical axis, multiple interior milling cutters 54 are positioned on a cross section of output shaft, and this cross section and taper-shank arbor axis are coplanar.On the housing end face relative with being fixed on end cap 19 in sleeve end face, be provided with two with the corresponding groove 551 of locating piece.When locating piece 18 extend into groove 551 when interior, in the circumferential direction of housing line centered by main-shaft axis, be positioned.
On the main shaft end face of taper hole 121 both sides, there are two to be parallel to the lug boss 122 that main-shaft axis extends; On the taper-shank arbor of cone 511 both sides, have two and the corresponding recess 512 of lug boss 122.In the time that cone coordinates with taper hole, lug boss stretches into recess and with recess and coordinates.Main shaft to recess transmitting torque, rotates taper-shank arbor by lug boss, to overcome main shaft by the taper hole 121 and the less deficiency of cone 511 transmitting torques that coordinate.
Referring to Figure 13, support unit 6 comprise the supporting seat 61 that is arranged on spindle drum, by bearing rotate arrange on supporting seat, one end have conical bore 621 support set 62, be arranged on the rod assembly 63 in support set.Rod assembly comprises pull bar 631, is sleeved on the dished spring assembly 632 of pull bar periphery; Pull bar is connected with pulling claw 633 in the one end near conical bore.On supporting seat, be provided with pushing drawing rod and overcome the elastic force of dished spring assembly and mobile pull bar pushing mechanism (as cylinder) 64.
A support column 59 with the outer cone 591 coordinating with conical bore 621 is also set on housing, on support column 59, is fixed with the blind rivet 634 that can stretch in pulling claw 633.Described support column is coaxial with taper-shank arbor.Outer cone 591 is identical with the tapering of cone 511, but opposite direction.
Blind rivet 634 stretches in pulling claw 633, pulls blind rivet 634 by the pulling claw of rod assembly 63, makes the support set with conical bore coordinate formation one with the support column with outer cone.
Referring to Figure 10, there is a flange 513 in the end relative with sleeve, housing upper end.Be provided with thrust bearing 7 at the flange back side relative with sleeve end face, in the time that drag hook hooks thrust bearing, housing can rotate with respect to drag hook in the circumferential direction of line centered by main-shaft axis by this thrust bearing.
When use, the blind rivet 56 being fixed on taper-shank arbor stretches into pulling claw 133, pulls blind rivet 56 that the cone of taper-shank arbor and the taper hole of main shaft are coordinated by rod assembly 13, and taper-shank arbor and main shaft form one, simultaneously the corresponding recess 512 of lug boss 122.Locating piece 18 stretches in groove 551, and housing is located in the circumferential direction of two locating pieces line centered by main-shaft axis, and drag hook drives cylinder action, and its piston rod moves up, and band moving slide-bar moves along guide groove, and is upwards outwards moving drag hook upper end; Meanwhile, ring flat-plate drives oil cylinder 32 to move, and drives drag hook oscillation adjustment ring flat-plate 31 to move down, spacing due to pair of rollers drag hook outside, and the lower end of drag hook can only upwards move inward.Like this, drag hook, along the axially movable while of main shaft, swings in the radial direction of main shaft, and the lower end of two drag hooks is just mutually drawn close and hooked the thrust bearing on the flange back side and drive housing to move up, and housing is clamped in sleeve end face.
Then, movable support unit, stretches in the pulling claw 633 of rod assembly 63 blind rivet 634 on support column, pulls blind rivet 634 by the pulling claw of rod assembly 63, makes the support set with conical bore coordinate formation one with the support column with outer cone.Then support unit is fixed, the housing of the just internal milling of supporting seat unit forms reliable supplemental support, strengthen the rigidity of interior milling unit in the direction perpendicular to main-shaft axis, reduced the distortion of interior milling unit in the direction perpendicular to main-shaft axis, improved machining accuracy.Because rotating, support set is arranged on supporting seat, so when sleeve driving mechanism drive sleeve, housing etc. are in the time that main-shaft axis swings, support set just swings with housing, can not hinder the swing of housing.
By main shaft drives mechanism successively drive shaft, taper-shank arbor, output shaft rotation, be positioned at the just revolution of milling cutter on output shaft, realize cutting movement.
Owing to thering is thrust bearing between drag hook and flange, so in the situation that drag hook hooks thrust bearing, flange (and housing) still can rotate around main-shaft axis with respect to drag hook.Therefore, in need to swinging in the circumferential direction of line centered by main-shaft axis when milling unit, without unclamping the drag hook that hooks flange, the in the situation that of being hooked by drag hook at housing and keep in touch with sleeve end face, can directly swing with respect to spindle drum by sleeve driving mechanism drive sleeve, sleeve and housing just turn an angle around main-shaft axis, more convenient to operate.Sleeve and housing are in the process of spindle swing, and main shaft is still fixed into one with taper-shank arbor under the effect of rod assembly, and without main shaft and taper-shank arbor are come off, easy to operate.When housing rotates, housing rotates around main-shaft axis together with output shaft, and output shaft axis keeps vertical with main-shaft axis all the time, the cross section at the multiple interior milling cutter place on output shaft is coplanar with main-shaft axis all the time, like this, central point (intersection point of output shaft axis and the main-shaft axis) invariant position of rotating surface of milling cutter (also can be said, interior milling cutter is constant with respect to the height of workpiece to be machined), that is to say, after housing and output shaft rotation, can process without tool setting again, ensure machining accuracy.
Claims (10)
1. main axle unit, comprises spindle drum, rotates the main shaft being arranged on spindle drum; Main shaft is the hollow shaft that one end has taper hole; In main shaft, be provided with rod assembly; Rod assembly comprises pull bar, is sleeved on the dished spring assembly of pull bar periphery; Pull bar is connected with pulling claw in the one end near taper hole, and dished spring assembly is in the time of normality, and pull bar pulls pulling claw to make the state of pulling claw in radial contraction; On spindle drum, be provided with pushing drawing rod and overcome the elastic force of dished spring assembly and mobile pull bar pushing mechanism; It is characterized in that: further comprising a sleeve coaxial with main shaft, main shaft rotates and is arranged in sleeve, and sleeve rotates and is arranged on spindle drum; On spindle drum, be provided with the sleeve driving mechanism that drive sleeve is rotated with respect to spindle drum; On spindle drum, be provided with the main shaft drives mechanism that drive shaft is rotated with respect to spindle drum.
2. main axle unit as claimed in claim 1, is characterized in that: sleeve driving mechanism comprises the worm gear being looped around on sleeve, and the rotation coordinating with worm gear is arranged on the worm screw on spindle drum, the servomotor that drives worm screw to rotate.
3. main axle unit as claimed in claim 1, is characterized in that: main shaft drives mechanism comprise be arranged on main shaft one end belt pulley, be arranged on the spindle motor on spindle drum, between spindle motor and belt pulley by band transmission.
4. main axle unit as claimed in claim 1, is characterized in that: on spindle drum, be provided with workpiece pulling mechanism, workpiece pulling mechanism comprises that at least two for hooking the drag hook of workpiece, the drag hook driving mechanism that drives drag hook being parallel to main-shaft axis direction and moving; With in sleeve end face, be provided with the positioner that workpiece is positioned in the circumferential direction of line centered by main-shaft axis;
Drag hook hooks workpiece, and drag hook driving mechanism drives workpiece to move along main-shaft axis by drag hook, and workpiece is clamped in sleeve end face.
5. main axle unit as claimed in claim 4, is characterized in that: drag hook and drag hook driving mechanism are hinged, makes drag hook swing around hinged place and make drag hook depart from the flexible member of workpiece between drag hook and spindle drum while being connected with normality.
6. main axle unit as claimed in claim 5, is characterized in that: when normality, flexible member makes drag hook swing laterally and make drag hook depart from workpiece in the radial direction of main shaft around hinged place; It also comprises a drag hook oscillation adjustment ring flat-plate moving along main-shaft axis direction; Drag hook passes in drag hook oscillation adjustment ring flat-plate; When drag hook hooks workpiece, workpiece is clamped in sleeve end face, and drag hook contacts with the inner peripheral surface of oscillation adjustment ring flat-plate and prevents that drag hook from departing from workpiece.
7. main axle unit as claimed in claim 6, is characterized in that: drag hook is connected with drag hook driving mechanism by guide post, and drag hook and drag hook driving mechanism are all hinged with guide post; Guide post is slidably arranged in and is arranged in guide groove on spindle drum, angled with main-shaft axis; Drag hook driving mechanism action, band moving slide-bar moves along guide groove, in drag hook is being parallel to main-shaft axis direction and moves under the drive of slide bar and flexible member, swings in the radial direction of main shaft around slide bar.
8. main axle unit as claimed in claim 7, is characterized in that: drag hook oscillation adjustment ring flat-plate is connected with driving its ring flat-plate driving mechanism moving along main-shaft axis direction.
9. main axle unit as claimed in claim 5, is characterized in that: when normality, flexible member makes drag hook swing laterally and make drag hook depart from workpiece in the radial direction of main shaft around hinged place; It also comprises drag hook oscillation adjustment ring flat-plate; Drag hook passes in drag hook oscillation adjustment ring flat-plate; When drag hook hooks workpiece, when workpiece is clamped in sleeve end face, drag hook contacts with the inner peripheral surface of oscillation adjustment ring flat-plate and prevents that drag hook from departing from workpiece; Drag hook is connected with drag hook driving mechanism by guide post, and drag hook and drag hook driving mechanism are all hinged with guide post; Guide post is slidably arranged in and is arranged in guide groove on spindle drum, angled with main-shaft axis; Drag hook driving mechanism action, band moving slide-bar moves along guide groove, in drag hook is being parallel to main-shaft axis direction and moves under the drive of slide bar and flexible member, swings in the radial direction of main shaft around slide bar.
10. main axle unit as claimed in claim 9, is characterized in that: drag hook oscillation adjustment ring flat-plate can move along main-shaft axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420302307.2U CN203917952U (en) | 2014-06-07 | 2014-06-07 | Main axle unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420302307.2U CN203917952U (en) | 2014-06-07 | 2014-06-07 | Main axle unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203917952U true CN203917952U (en) | 2014-11-05 |
Family
ID=51813833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420302307.2U Withdrawn - After Issue CN203917952U (en) | 2014-06-07 | 2014-06-07 | Main axle unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203917952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096864A (en) * | 2014-06-07 | 2014-10-15 | 南京旋风数控机床有限公司 | Main shaft unit |
-
2014
- 2014-06-07 CN CN201420302307.2U patent/CN203917952U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096864A (en) * | 2014-06-07 | 2014-10-15 | 南京旋风数控机床有限公司 | Main shaft unit |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20141105 Effective date of abandoning: 20170616 |