CN102909440A - Synchronous tapping machine with retractable inner shaft of motor - Google Patents
Synchronous tapping machine with retractable inner shaft of motor Download PDFInfo
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- CN102909440A CN102909440A CN2012104354646A CN201210435464A CN102909440A CN 102909440 A CN102909440 A CN 102909440A CN 2012104354646 A CN2012104354646 A CN 2012104354646A CN 201210435464 A CN201210435464 A CN 201210435464A CN 102909440 A CN102909440 A CN 102909440A
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Abstract
The invention relates to a tapping machine which is characterized by realizing rapid advance and retreat of idle stroke through a cylinder, utilizing positive and negative rotation of a motor and speed change of a leather belt and a gear to drive a nut to rotate, and utilizing feeding and retreat of a lead screw to realize synchronous thread machining. The tapping machine comprises a rack, a squirrel-cage motor, a gear box, a lead screw nut transmission mechanism, a cylinder idle stroke rapid mechanism and a stop brake mechanism, wherein an inner shaft of the squirrel-cage motor can stretch freely, a cutter is arranged at the lower end of the inner shaft, the squirrel-cage motor is fixed on the rack, the gear box is installed on a rear cover of the squirrel-cage motor, the lead screw nut transmission mechanism and the stop brake mechanism are fixedly installed in the gear box, the cylinder idle stroke rapid mechanism is installed at the upper end of a lead screw of the lead screw nut transmission mechanism, through the cooperation of the gear box and the lead screw nut transmission mechanism, the squirrel-cage motor drives the inner shaft of the squirrel-cage motor to stretch and rotate, and through the cylinder idle stroke rapid mechanism and the stop brake mechanism, the squirrel-cage motor controls the idle stroke advance and brake of the inner shaft of the squirrel-cage motor.
Description
Technical field
The present invention relates to the tooth machining unit in a kind of machining equipment, particularly a kind of cylinder that utilizes is realized the idle stroke fast advance and retreat, the speed change of utilizing motor positive and inverse to reach by belt and gear drives the nut rotation, and screw mandrel sends and retreat to realize the tooth machining unit of synchronous screw thread processing to.
Background technology
Existing synchronous tooth machining unit generally is comprised of threephase asynchronous machine, belt, main shaft, lifting cover, electromagnetic clutch, screw mandrel and gear, and motor links to each other with screw mandrel with main shaft with belt by gear.The feed speed that needs when fast advance and retreat and synchronously tapping is utilized electromagnetic clutch, make the gear of the different big or small numbers of teeth switch meshing finishing, utilize switch to make the power supply commutation realize that motor positive and inverse drives main shaft and screw mandrel rotating, the control main shaft moves forward and backward to realize synchronous tapping.
The defective of this structure is: application of motor control main shaft, electromagnetic clutch carry out that teeth change is incompatible finishes the fast advance and retreat of idle stroke and impulse stroke is advanced and retreat by pitch, the structure relative complex, and accuracy of manufacture requirement is high, and cost is also high.
Summary of the invention
The object of the invention is to overcome defects, provide a kind of cylinder that utilizes to realize the idle stroke fast advance and retreat, utilize motor positive and inverse to reach the tooth machining unit of sending and retreat to realize synchronous screw thread processing by the variable velocity zone movable wire bar of belt and gear to.
Scheme of the present invention is: the retractable synchronous tooth machining unit of axle in a kind of motor is characterized in that: comprise frame (9), squirrel cage motor (1), gearbox (19), screw nut driving mechanism, cylinder idle stroke quick mechanism and shut down braking mechanism; The interior axle retractable of described squirrel cage motor (1); its bottom is equipped with cutter; squirrel cage motor (1) is fixed on the frame (9); gearbox (19) is installed on the bonnet of squirrel cage motor (1); screw nut driving mechanism and shutdown braking mechanism are fixedly mounted in the gearbox (19); cylinder idle stroke quick mechanism is installed in the screw mandrel upper end of screw nut driving mechanism; described squirrel cage motor (1) is by match with screw nut driving mechanism the flexible of the interior axle that drives squirrel cage motor (1) and rotating of gearbox (19), advances and shuts down brake by cylinder idle stroke quick mechanism and the idle stroke of shutting down the interior axle of braking mechanism control squirrel cage motor (1).
Rotor core (2) the medium pore reaming of described squirrel cage motor (1), the rotor core after the reaming (2) internal diameter are not more than the internal diameter of fence cage in the rotor core (2); Electric machine main shaft is combined into interior axle (4) cover of corresponding stage casing band external splines by the sleeve body (3) of split type stage casing band internal spline, sleeve body (3) endoporus leading portion and back segment are cylindrical hole, interlude is internal spline, the leading portion external diameter is external screw thread, sleeve body (3) cylindrical is tightly fixed in rotor core (2) medium pore, interior axle (4) leading portion and back segment are optical axis, interlude is external splines, the bottom of optical axis is provided with for internal taper hole and external screw thread that chuck is installed, use a Step Shaft (5) front end threaded column to screw up and be fixed in the central, threaded hole of interior axle (4) rear end face setting, in the space that Step Shaft (5) forms the back segment optical axis of return spring (6) the compressing endoporus after the endoporus back segment of sleeve body (3) is internal spline and interior axle (4) simultaneously, overlap in the medium pore of Step Shaft (5) upper surface and put a steel ball (7); Waterproof cover (8) screws up on the external screw thread that is fixed on sleeve body (3) leading portion external diameter, and the end cap of squirrel cage motor (1) has certain matched in clearance.
Institute's speed transmission comprises synchronous pulley (10), lower synchronous pulley and the gear fixing device that is installed on sleeve body (3) back segment, upper synchronous pulley and gear fixing device, the first Timing Belt (11), the second Timing Belt (12), synchronous pulley (30) and gear-box case (20), gear-box case (20) is fixed on the bonnet of squirrel cage motor (1) by screw integral body.
Described synchronous pulley (10), the external diameter stationary fit of its endoporus and sleeve body (3) back segment; Keyway in the endoporus is also corresponding with keyway on sleeve body (3) the back segment external diameter, and connects together by key and sleeve body (3).
Described lower synchronous pulley and gear fixing device: comprise lower synchronous pulley (12), bearing (15), lower bearing holder (13), bearing plate (14), gear fixed head (16), gear (18) and locating pin (17); In the lower synchronous pulley (12) concentric stepped hole is arranged, the stage casing cooperates is equipped with bearing (15), and the lower bearing holder (13) of a Step Shaft shape is arranged, and large end is fixed by screws on the gear-box case (20) small end and bearing (15) endoporus stationary fit.The large side pressure of the bearing plate of step plate-like (14) is on bearing (15) inner ring, small end becomes matched in clearance with the interior stepped hole of lower bearing holder (13), a screw passes the endoporus of bearing plate (14), bearing plate (14) connecting shaft is held (15) be fixed on the central, threaded hole of lower bearing holder (13); Step plate-like gear fixed head (16) with internal thread, be fixed on one heart lower synchronous pulley (12) central authorities by screw, in the gear (18) of concentric step wellhole is arranged, its step well internal diameter and the outer step stationary fit of gear fixed head (16) are fixed on the central authorities of gear fixed head (16) with one heart by screw and locating pin (17).
Described upper synchronous pulley and gear fixing device: comprise synchronous pulley (24), bearing (25), upper bearing (metal) holder (26), bearing plate (23), gear fixed head (22), gear (21), locating pin (17), pressing plate (27) and hold-down nut (28); Upper bearing (metal) holder (26) is installed the structure of bearing one end and mounting means and the lower bearing holder (13) of other parts of ining succession duplicates; The other end be cylindric, head with external screw thread, pass gear-box case (20) upper hole position and pressing plate (27) centre bore, by hold-down nut (28), screw up and be fixed on the gear-box case (20).
Described screw nut driving mechanism: comprise the screw mandrel with endoporus (35) that is fixed on the cylinder base plate (37), be fixed by screws on the synchronous pulley (30), external form is concentric Step Shaft, the externally threaded mother nut of small end band (31), bearing (32), clamp nut (34) and bearing cover (33); The Step Shaft middle part external diameter of the internal diameter of bearing (32) and mother nut (31) becomes stationary fit.Clamp nut (34) screws up at the screw thread place of mother nut (31), pushes down the inner ring of bearing (32); The external diameter of bearing (32) becomes stationary fit with the stepped hole of gear-box case (20); Push down the outer ring of bearing (32) with the plate-like bearing cover (33) of stepped hole, be fixed on the gear-box case (20), screw mandrel (35) screws up and passes mother nut (31).
Described cylinder idle stroke quick mechanism: comprise cylinder (38), cylinder base plate (37), push rod (36), stop nut (42), cylinder (38) is fixed on the cylinder base plate (37), cylinder rod lower end and the externally threaded push rod of cylindric head band (36) screw up fixing, push rod (36) external diameter becomes matched in clearance with screw mandrel (35) endoporus, and two stop nuts (42) also fasten on the cylinder rod of cylinder (38) upper end.
Described shutdown braking mechanism: comprise that the upper end step place and the synchronous pulley (10) that are sleeved on sleeve body (3) are fixed together, are pressed on plate-like dyanainic friction dish (40), grinding disk (39), pull bar (46), pretensioned spring (51), upper plate (43), screw (44) and nut (45) on the sleeve body (3) by nut (41); One end of described cylindric pull bar (46) is fixed on the grinding disk (39), passes gear-box case (20) upper end gentle cylinder bottom plate (37), and the contact position becomes matched in clearance, and the other end and upper plate (43) are fixed by screw; The corresponding cylinder rod of upper plate (43) position, one screwed hole is arranged, screw up and fasten screw (44) and nut (45) that capable of regulating height is housed, be enclosed within the pretensioned spring (51) of pull bar (46) lower end, compression is contained in gear-box case (between 20 interior upper surfaces and the frictional disk (39).
Beneficial effect of the present invention is: directly use the interior axle of motor as lifting shaft, save power transmission shaft, the lifting cover of traditional tooth machining unit, make designs simplification; Can utilize simultaneously cylinder to realize the idle stroke fast advance and retreat, utilize motor positive and inverse to reach the synchronous screw thread processing of sending and retreat to realize tooth machining unit by the variable velocity zone movable wire bar of belt and gear to.
Description of drawings
Fig. 1 is structure top view of the present invention.
Fig. 2 be the A-A of Fig. 1 dissect with B-B dissect, the signal picture group of designs simplification.
Fig. 3 is the schematic diagram that the C-C of Fig. 1 dissects, partial structurtes are simplified.
Fig. 4 is the D-D cut away view of Fig. 2.
Fig. 5 is the E-E cut away view of Fig. 1.
Fig. 6 is the Shape Modelling illustration.
Fig. 7 is the moulding illustration that gear-box case is partly hidden.
Among the figure: 1, squirrel cage motor 2, rotor core 3, sleeve body 4, interior axle 5, Step Shaft 6, return spring, 7, steel ball 8, waterproof cover 9, frame 10, synchronous pulley 11, Timing Belt 12, lower synchronous pulley 13, lower bearing holder 14, bearing plate 15, bearing 16, gear fixed head 17, locating pin 18, gear 19, gearbox 20, gear-box case 21, gear 22, gear fixed head 23, bearing plate 24, synchronous pulley 25, bearing 26, upper bearing (metal) holder 27, pressing plate 28, hold-down nut 29, Timing Belt 30, synchronous pulley 31, mother nut 32, bearing 33, bearing cover 34, clamp nut 35, screw mandrel 36, push rod 37, cylinder base plate 38, cylinder 39, grinding disk 40, dyanainic friction dish 41, nut 42, stop nut 43, upper plate 44, screw 45, nut 46, pull bar 47, stop screw 48, travel switch 49, parking screw 50, travel switch 51, pretensioned spring.
The specific embodiment
The present invention is further described below by specific embodiment:
Structure of the present invention comprises frame 9; squirrel cage motor 1; gearbox 19; screw nut driving mechanism; cylinder idle stroke quick mechanism and shutdown braking mechanism, squirrel cage motor 1 is fixed on the frame 9, and gearbox 19 is installed on the bonnet of squirrel cage motor 1; screw nut driving mechanism and shutdown braking mechanism are fixedly mounted on the gearbox 19, and cylinder idle stroke quick mechanism is installed on the screw mandrel.
The rotor core 2 medium pore reamings of described squirrel cage motor 1, rotor core 2 internal diameters after the reaming are not more than the internal diameter of fence cage in the rotor core 2; Electric machine main shaft is combined into interior axle 4 covers of corresponding stage casing band external splines by the sleeve body 3 of split type stage casing band internal spline, sleeve body 3 endoporus leading portions and back segment are cylindrical hole, interlude is internal spline, the leading portion external diameter is external screw thread, sleeve body 3 cylindricals are tightly fixed in rotor core 2 medium pores, interior axle 4 leading portions and back segment are optical axis, interlude is external splines, the bottom of optical axis is provided with for internal taper hole and external screw thread that chuck is installed, use Step Shaft 5 front end threaded column to screw up and be fixed in the central, threaded hole of interior axle 4 rear end faces setting, in the space that Step Shaft 5 forms the back segment optical axis of the endoporus of return spring 6 compressing after the endoporus back segment of sleeve body 3 is internal spline and interior axle 4 simultaneously, overlap in the Step Shaft 5 upper surface medium pores and put a steel ball 7.Waterproof cover 8 screws up on the external screw thread that is fixed on sleeve body 3 leading portion external diameters, and the end cap of squirrel cage motor 1 has certain matched in clearance.
Institute's speed transmission 19: comprise the synchronous pulley 10 that is installed on sleeve body 3 back segments, lower synchronous pulley and gear fixing device, upper synchronous pulley and gear fixing device, the first Timing Belt 11, the second Timing Belt 12, synchronous pulley 30 and gear-box case 20, gear-box case 20 is fixed on the bonnet of squirrel cage motor 1 by screw integral body.
Described synchronous pulley 10, the external diameter stationary fit of its endoporus and sleeve body 3 back segments.Keyway in the endoporus is also corresponding with keyway on the sleeve body 3 back segment external diameters, and connects together by key and sleeve body 3.
Described lower synchronous pulley and gear fixing device: comprise lower synchronous pulley 12, bearing 15, lower bearing holder 13, bearing plate 14, gear fixed head 16, gear 18 and locating pin 17.In the lower synchronous pulley 12 concentric stepped hole is arranged, the stage casing cooperates is equipped with bearing 15, and the lower bearing holder 13 of a Step Shaft shape is arranged, and large end is fixed by screws on the gear-box case 20 small end and bearing 15 endoporus stationary fits.The bearing plate 14 large side pressures of step plate-like are on bearing 15 inner rings, small end becomes matched in clearance with the interior stepped hole of lower bearing holder 13, a screw passes the endoporus of bearing plate 14, bearing plate 14 connecting shafts is held 15 be fixed on the central, threaded hole of lower bearing holder 13.Step plate-like gear fixed head 16 with internal thread, be fixed on one heart lower synchronous pulley 12 central authorities by screw, in the gear 18 of concentric step wellhole is arranged, its step well internal diameter and the 16 outer step stationary fits of gear fixed head are fixed on the central authorities of gear fixed head 16 with one heart by screw and locating pin 17.
Described upper synchronous pulley and gear fixing device: comprise synchronous pulley 24, bearing 25, upper bearing (metal) holder 26, bearing plate 23, gear fixed head 22, gear 21, locating pin 17, pressing plate 27 and hold-down nut 28.Mounting means and lower bearing holder 13 that upper bearing (metal) holder 26 is installed the structure of bearing one end and other parts of ining succession duplicate.The other end be cylindric, head with external screw thread, pass gear-box case 20 upper hole positions and pressing plate 27 centre bores, by hold-down nut 28, screw up and be fixed on the gear-box case 20.
Described screw nut driving mechanism: comprise the screw mandrel 35 with endoporus that is fixed on the cylinder base plate 37, be fixed by screws on the synchronous pulley 30, external form is concentric Step Shaft, small end band externally threaded mother nut 31, bearing 32, clamp nut 34 and bearing cover 33.The Step Shaft middle part external diameter of the internal diameter of bearing 32 and mother nut 31 becomes stationary fit.Clamp nut 34 screws up the screw thread place at mother nut 31, pushes down the inner ring of bearing 32.The external diameter of bearing 32 becomes stationary fit with the stepped hole of gear-box case 20.Push down the outer ring of bearing 32 with the plate-like bearing cover 33 of stepped hole, be fixed on the gear-box case 20.Screw mandrel 35 screws up and passes mother nut 31.
Described cylinder idle stroke quick mechanism: comprise cylinder 38, cylinder base plate 37, push rod 36, stop nut 42.Cylinder 38 is fixed on the cylinder base plate 37, and cylinder rod lower end and the externally threaded push rod 36 of cylindric head band screw up fixing, and push rod 36 external diameters become matched in clearance with screw mandrel 35 endoporus, and two stop nuts 42 also fasten on the cylinder rod of cylinder 38 upper ends.
Described shutdown braking mechanism: comprise that the upper end step place and the synchronous pulley 10 that are sleeved on sleeve body 3 are fixed together, are pressed on plate-like dyanainic friction dish 40, grinding disk 39, pull bar 46, pretensioned spring 51, upper plate 43, screw 44 and nut 45 on the sleeve body 3 by nut 41.One end of two cylindric pull bars 46 is fixed on the grinding disk 39, passes the gentle cylinder bottom plate 37 in gear-box case 20 upper ends, and contact position becomes a matched in clearance, and the other end and upper plate 43 are fixed by screw.There is a screwed hole upper plate 43 corresponding cylinder rod positions, screw up and fasten screw 44 and nut 45 that capable of regulating height is housed.Be enclosed within two pretensioned springs 51 of pull bar 46 lower ends, compression is contained between gear-box case 20 interior upper surfaces and the frictional disk 39.
Its operation principle is as follows:
During start, cylinder 38 air inlets, the push rod 36 of the cylinder rod of ining succession heads on steel ball 7 downwards and the Step Shaft 5 of the steel ball 7 of ining succession, interior axle 4 with the cutter of clamping, the pressure that overcomes return spring 6 advances downwards fast.The stop nut 42 that is fixed on cylinder rod upper end is obstructed when running into cylinder 38 upper surface and stops descendingly, and idle stroke is advanced and put in place.Simultaneously, the sleeve body 3 that squirrel cage motor 1 is switched on and rotor core 2 is ined succession, drive waterproof cover 8, the interior axle 4 of spline structure, Step Shaft 5, steel ball 7, return spring 6, synchronous pulley 10, dyanainic friction dish 40, nut 41 synchronous rotaries.Synchronous pulley 10 drives lower synchronous pulley 12 by the first Timing Belt 11 and does same direction rotation with the gear fixed head 16, the gear 18 that are attached thereto.Gear 18 is meshing with gear 21, Timing Belt moving gear 21 is done the rightabout rotation during gear 18 rotation, and the gear fixed head 22 that links to each other with gear 21 and synchronous pulley 24 drive synchronizing wheel 30 by Timing Belt 29 and also do simultaneously the rightabout rotation with the mother nut 31 of ining succession and clamp nut 34.
Be fixed on bearing 32 on the gear-box case 20 and the restriction of clamp nut 34, mother nut 31 rotates but can't move up and down.Be enclosed within the screw mandrel 35 in the mother nut 31, be subjected to two pull bar 46 restrictions of passing motionless gear-box case 20 upper ends, can not rotate, be subjected to mother nut 31 counter-rotating controls, with cylinder base plate 37 and cylinder 38 synchronous rectilinear motions downwards.According to the pitch of screw mandrel 35, the size by designing each synchronous pulley and the number of teeth of two gears namely just can reach after the gearbox speed change.Synchronous pulley 10 every rotation one circles, mother nut 31 after the speed change is being controlled screw mandrel 35 by the downward rectilinear motion of definite value of design, the cylinder base plate 37 of ining succession with screw mandrel 35, cylinder 38 is synchronously downward rectilinear motion also, the in succession push rod 36 of the cylinder rod that stretched out continues to head on synchronously downward rectilinear motions of steel ball 7, and the Step Shaft 5 of the steel ball 7 of ining succession, interior axle 4 is with the cutter of clamping, and the pressure and the screw mandrel 35 that also continue to overcome return spring 6 move downward by the definite values of design synchronously.The interior axle 4 middle part splines of rotation and the internal spline fit of sleeve body 3 make the cutter that is contained on the interior axle 4 move downward while rotating, and enter impulse stroke.
In the work, steel ball 7 rotates together with Step Shaft 5, contacts all the time with non-rotary push rod 36 and rubs.Stop screw 47 on being fixed on cylinder base plate 37 moves downward when running into travel switch 48; external control electrical equipment impels squirrel cage motor 1 counter-rotating; mother nut 31 is controlled to be rotated to other direction synchronously; screw mandrel 35; push rod 36; cylinder 38 gentle cylinder bottom plates 37 are also synchronously by the definite value of the design rectilinear motion that makes progress; when the parking screw 49 on being fixed on cylinder base plate 37 is run into travel switch 50; external control electrical equipment impels squirrel cage motor 1 to shut down; cylinder 38 is return upwards; top, cylinder rod upper end is to the screw 44 that is fixed on upper plate 43; in succession two pull bars 46 of upper plate 43 and with grinding disk 39 of drive; the pressure that overcomes two pretensioned springs 51 moves upward; when grinding disk 39 touch because of the motor inertial rotation when being attached thereto the dyanainic friction dish 40 that together rotates; resistance moment increase; overcome the inertial rotation of dyanainic friction dish 39; make it to stop, the interior axle that cutter is housed 4 and all revolving parts that being attached thereto stop the rotation synchronously, and a working procedure is finished.
When working starting, cylinder rod is descending fast, the screw 44 that disengages again, the effect of preloading contracting spring 51, grinding disk 39 DL synchronizations above the lower end inwall that is pasting gear-box case 20 till, broken away from and the contacting of dyanainic friction dish 40, do not disturb the new work period to finish.
Claims (9)
1. the interior retractable synchronous tooth machining unit of axle of motor is characterized in that: comprise frame (9), squirrel cage motor (1), gearbox (19), screw nut driving mechanism, cylinder idle stroke quick mechanism and shut down braking mechanism; The interior axle retractable of described squirrel cage motor (1); its bottom is equipped with cutter; squirrel cage motor (1) is fixed on the frame (9); gearbox (19) is installed on the bonnet of squirrel cage motor (1); screw nut driving mechanism and shutdown braking mechanism are fixedly mounted in the gearbox (19); cylinder idle stroke quick mechanism is installed in the screw mandrel upper end of screw nut driving mechanism; described squirrel cage motor (1) is by match with screw nut driving mechanism the flexible of the interior axle that drives squirrel cage motor (1) and rotating of gearbox (19), advances and shuts down brake by cylinder idle stroke quick mechanism and the idle stroke of shutting down the interior axle of braking mechanism control squirrel cage motor (1).
2. synchronous tooth machining unit according to claim 1 is characterized in that: rotor core (2) the medium pore reaming of described squirrel cage motor (1), the rotor core after the reaming (2) internal diameter are not more than the internal diameter of fence cage in the rotor core (2); Electric machine main shaft is combined into interior axle (4) cover of corresponding stage casing band external splines by the sleeve body (3) of split type stage casing band internal spline, sleeve body (3) endoporus leading portion and back segment are cylindrical hole, interlude is internal spline, the leading portion external diameter is external screw thread, sleeve body (3) cylindrical is tightly fixed in rotor core (2) medium pore, interior axle (4) leading portion and back segment are optical axis, interlude is external splines, the bottom of optical axis is provided with for internal taper hole and external screw thread that chuck is installed, use a Step Shaft (5) front end threaded column to screw up and be fixed in the central, threaded hole of interior axle (4) rear end face setting, in the space that Step Shaft (5) forms the back segment optical axis of return spring (6) the compressing endoporus after the endoporus back segment of sleeve body (3) is internal spline and interior axle (4) simultaneously, overlap in the medium pore of Step Shaft (5) upper surface and put a steel ball (7); Waterproof cover (8) screws up on the external screw thread that is fixed on sleeve body (3) leading portion external diameter, and the end cap of squirrel cage motor (1) has certain matched in clearance.
3. synchronous tooth machining unit according to claim 1, it is characterized in that: institute's speed transmission comprises synchronous pulley (10), lower synchronous pulley and the gear fixing device that is installed on sleeve body (3) back segment, upper synchronous pulley and gear fixing device, the first Timing Belt (11), the second Timing Belt (12), synchronous pulley (30) and gear-box case (20), gear-box case (20) is fixed on the bonnet of squirrel cage motor (1) by screw integral body.
4. synchronous tooth machining unit according to claim 3 is characterized in that: described synchronous pulley (10), the external diameter stationary fit of its endoporus and sleeve body (3) back segment; Keyway in the endoporus is also corresponding with keyway on sleeve body (3) the back segment external diameter, and connects together by key and sleeve body (3).
5. synchronous tooth machining unit according to claim 3 is characterized in that: described lower synchronous pulley and gear fixing device: comprise lower synchronous pulley (12), bearing (15), lower bearing holder (13), bearing plate (14), gear fixed head (16), gear (18) and locating pin (17); In the lower synchronous pulley (12) concentric stepped hole is arranged, the stage casing cooperates is equipped with bearing (15), and the lower bearing holder (13) of a Step Shaft shape is arranged, and large end is fixed by screws on the gear-box case (20) small end and bearing (15) endoporus stationary fit; The large side pressure of the bearing plate of step plate-like (14) is on bearing (15) inner ring, small end becomes matched in clearance with the interior stepped hole of lower bearing holder (13), a screw passes the endoporus of bearing plate (14), bearing plate (14) connecting shaft is held (15) be fixed on the central, threaded hole of lower bearing holder (13); Step plate-like gear fixed head (16) with internal thread, be fixed on one heart lower synchronous pulley (12) central authorities by screw, in the gear (18) of concentric step wellhole is arranged, its step well internal diameter and the outer step stationary fit of gear fixed head (16) are fixed on the central authorities of gear fixed head (16) with one heart by screw and locating pin (17).
6. synchronous tooth machining unit according to claim 3 is characterized in that: described upper synchronous pulley and gear fixing device: comprise synchronous pulley (24), bearing (25), upper bearing (metal) holder (26), bearing plate (23), gear fixed head (22), gear (21), locating pin (17), pressing plate (27) and hold-down nut (28); Upper bearing (metal) holder (26) is installed the structure of bearing one end and mounting means and the lower bearing holder (13) of other parts of ining succession duplicates; The other end be cylindric, head with external screw thread, pass gear-box case (20) upper hole position and pressing plate (27) centre bore, by hold-down nut (28), screw up and be fixed on the gear-box case (20).
7. synchronous tooth machining unit according to claim 1, it is characterized in that: described screw nut driving mechanism: comprise the screw mandrel with endoporus (35) that is fixed on the cylinder base plate (37), be fixed by screws on the synchronous pulley (30), external form is concentric Step Shaft, the externally threaded mother nut of small end band (31), bearing (32), clamp nut (34) and bearing cover (33); The Step Shaft middle part external diameter of the internal diameter of bearing (32) and mother nut (31) becomes stationary fit; Clamp nut (34) screws up at the screw thread place of mother nut (31), pushes down the inner ring of bearing (32); The external diameter of bearing (32) becomes stationary fit with the stepped hole of gear-box case (20); Push down the outer ring of bearing (32) with the plate-like bearing cover (33) of stepped hole, be fixed on the gear-box case (20), screw mandrel (35) screws up and passes mother nut (31).
8. synchronous tooth machining unit according to claim 1, it is characterized in that: described cylinder idle stroke quick mechanism: comprise cylinder (38), cylinder base plate (37), push rod (36), stop nut (42), cylinder (38) is fixed on the cylinder base plate (37), cylinder rod lower end and the externally threaded push rod of cylindric head band (36) screw up fixing, push rod (36) external diameter becomes matched in clearance with screw mandrel (35) endoporus, and two stop nuts (42) also fasten on the cylinder rod of cylinder (38) upper end.
9. synchronous tooth machining unit according to claim 1 is characterized in that: described shutdown braking mechanism: comprise that the upper end step place and the synchronous pulley (10) that are sleeved on sleeve body (3) are fixed together, are pressed on plate-like dyanainic friction dish (40), grinding disk (39), pull bar (46), pretensioned spring (51), upper plate (43), screw (44) and nut (45) on the sleeve body (3) by nut (41); One end of described cylindric pull bar (46) is fixed on the grinding disk (39), passes gear-box case (20) upper end gentle cylinder bottom plate (37), and the contact position becomes matched in clearance, and the other end and upper plate (43) are fixed by screw; The corresponding cylinder rod of upper plate (43) position, one screwed hole is arranged, screw up and fasten screw (44) and nut (45) that capable of regulating height is housed, be enclosed within the pretensioned spring (51) of pull bar (46) lower end, compression is contained in gear-box case (between 20 interior upper surfaces and the frictional disk (39).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435464.6A CN102909440B (en) | 2012-11-05 | 2012-11-05 | Synchronous tapping machine with retractable inner shaft of motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435464.6A CN102909440B (en) | 2012-11-05 | 2012-11-05 | Synchronous tapping machine with retractable inner shaft of motor |
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| Publication Number | Publication Date |
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| CN102909440A true CN102909440A (en) | 2013-02-06 |
| CN102909440B CN102909440B (en) | 2017-01-25 |
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| CN201210435464.6A Active CN102909440B (en) | 2012-11-05 | 2012-11-05 | Synchronous tapping machine with retractable inner shaft of motor |
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| CN110900199A (en) * | 2019-11-12 | 2020-03-24 | 北京普瑞曼科技股份有限公司 | Horizontal drilling and tapping integrated drilling machine |
| CN111725958A (en) * | 2020-07-28 | 2020-09-29 | 合肥禾松信息科技有限公司 | Motor stator lamination processing pre-tightening device |
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| CN110356034B (en) * | 2019-07-17 | 2024-05-10 | 贵州云峰药业有限公司 | High-speed rotary tablet press based on fixed preparation processing |
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| CN113695962A (en) * | 2021-10-28 | 2021-11-26 | 沈阳机床(集团)有限责任公司 | High-precision quick driving mechanism of vertical shaft of numerical control machine tool |
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