CN206010057U - The self adaptation tooth machining unit of Aeroassisted idle stroke - Google Patents

Abstract

The utility model is related to a kind of self adaptation tooth machining unit of Aeroassisted idle stroke, and including electric machine assembly, electric machine assembly includes housing, stator, rotor core and electric machine main shaft；Electric machine main shaft is made up of sleeve body and interior axle, and interior axle can not rotate relative to sleeve body but can relative sleeve body axial movement；Self adaptation tooth machining unit also includes screw-and-nut mechanism, air cylinder device, braking mechanism and idle stroke governor motion；Screw-and-nut mechanism includes driving screw, nut piston bar and idle stroke piston；Self adaptation tooth machining unit also includes that the pitch being arranged between interior axle and driving screw adapts to spring.The automatic tapping machine can not only realize the fast advance and retreat of idle stroke using air cylinder device, and can adapt to spring in tapping by pitch of the compressing between driving screw and interior axle enables interior axle to carry out axially adjustable completing tapping so as to adapt to automatically the pitch of screw tap or screw die, be conducive to simplifying structure and improve work efficiency, adapt to the tapping of different pitch, applied range.

Description

The self adaptation tooth machining unit of Aeroassisted idle stroke

Technical field

The utility model is related to machining apparatus field, more particularly to a kind of self adaptation tapping of Aeroassisted idle stroke Machine.

Background technology

Existing automatic tapping machine typically by threephase asynchronous machine, belt, main shaft, lifting set, electromagnetic clutch, screw mandrel and Gear is constituted, and motor is connected with main shaft and screw mandrel with belt by gear.The feeding speed needed when fast advance and retreat and synchronous tapping Spend and switch the gear mesh of the different numbers of teeth using electromagnetic clutch to complete, make power supply commutation realize motor positive and inverse using switch Main shaft and screw mandrel rotating, control main shaft is driven to move forward and backward to realize synchronous tapping.

The defect of this structure is：More gear changing is needed when the screw tap of different pitch or screw die tapping, and, use motor Control main shaft, electromagnetic clutch switches over gear mesh, and to complete idle stroke, advance and retreat and impulse stroke are retreated by pitch soon, knot Structure is relative complex, and the accuracy of manufacture has high demands, and cost is also high.

Utility model content

The purpose of this utility model is to overcome disadvantage mentioned above, there is provided a kind of self adaptation tapping of Aeroassisted idle stroke Machine, the automatic tapping machine can not only realize the fast advance and retreat of idle stroke using air cylinder device, and can be in tapping by pressure Compel pitch between driving screw and interior axle to adapt to spring to enable interior axle to carry out axially adjustable so as to adapting to automatically screw tap or screw die Pitch completing tapping, be conducive to simplifying structure and improve work efficiency, adapt to the tapping of different pitch, applied range.

The utility model is realized in：A kind of self adaptation tooth machining unit of Aeroassisted idle stroke, it is characterised in that：Bag Electric machine assembly is included, and the electric machine assembly is included for the housing being connected being fixedly mounted with external rack, being fixed on determining in housing Son, the rotor core being movably set in the middle part of stator and the electric machine main shaft being arranged in the middle part of rotor core；The electric machine main shaft It is made up of the sleeve body being coaxially fixedly installed in rotor core medium pore and the interior axle being coaxially movably set in sleeve body body, The two ends of the sleeve body are rotationally connected with housing, and the interior axle can not rotate relative to sleeve body but can relative sleeve body axial direction Mobile, the front end of interior axle is provided with for installing the connection member of screw tap or screw die；The self adaptation tooth machining unit also include for Driving interior axle to stretch is carried out the screw-and-nut mechanism of tapping, is fixedly arranged on housing rear end and is connected with screw-and-nut mechanism Connect in idle stroke drive interior axle fast advance and retreat air cylinder device, be arranged in air cylinder device cylinder body and and bolt and nut Transmission mechanism be connected for returning in interior axle and make the braking machine that electric machine main shaft stopped operating rapidly after electric machine assembly is shut down Structure and it is arranged at the idle stroke governor motion of screw-and-nut mechanism rear end；The screw-and-nut mechanism includes leading Screw rod, nut piston bar and idle stroke piston；The driving screw front end stretch in axle sleeve body and coaxially connected with interior shaft rear end, The driving screw can not be rotated relative to interior axle but can be moved relative to internal axle axial, and the middle part of the driving screw is located at air cylinder device cylinder In vivo, the rearward end of the driving screw be provided with external screw thread and part be placed on outside air cylinder device cylinder body, the nut piston bar with Driving screw rearward end screw thread screws up the pitch of coaxial pairing connection and nut piston bar and driving screw screw thread more than or equal to wanted The pitch of the screw tap or screw die of installation；The periphery wall of the nut piston bar is slidably connected on air cylinder device and gas is stretched in front end It is fixedly connected with idle stroke piston coaxial in cylinder assembly cylinder body, the periphery wall of the idle stroke piston is slidably connected to air cylinder device In cylinder body；The self adaptation tooth machining unit also includes being arranged at being pacified for the compensation interior axle in tapping between interior axle and driving screw Dress screw tap or screw die advance because pitch is different with driving screw or retreat the pitch adaptation spring of produced range difference.

Additionally, the above technical scheme of the utility model has also further done following improvement：

In order that driving screw can not be rotated relative to interior axle but can be moved relative to internal axle axial, it is coaxially provided with the interior axle body The installation duct that diameter is matched with driving screw front end optical axis, driving screw front end optical axis are movably set in installation duct, The interior axle top is provided with axially distributed long slot bore, is installed with diameter and elongated slot hole width on the optical axis of the driving screw front end The pin for matching, the pin are snug fit in long slot bore and driving screw are rotated from relative interior axle but can interior axle relatively Axial movement, the pitch adaptation spring is arranged in installation duct and compression is in installation duct front end face and driving screw Between front end surface.

In order to, after a tapping end cycle, quickly controlled motor component stop operating, the braking mechanism includes Resetting piston bar, brake resetting piston, return wave washer, magnetosphere fixed seat, screw-bearing, brake disc, brake push rod, brake Disk fixing screws, frictional disk；The resetting piston bar be coaxially movably set in the middle part of driving screw periphery wall and rear end with brake back Position piston coaxial is fixedly connected, and the resetting piston bar front end is slidably connected in axle sleeve body, the brake resetting piston periphery Wall is slidably connected in air cylinder device cylinder body, and the periphery wall of the magnetosphere fixed seat is slidably connected in air cylinder device cylinder body and logical Cross screw-bearing to be rotationally connected with driving screw, the brake disc is located at magnetosphere and fixes base rear end and be along the circumferential direction laid with Plural counterbore, the magnetosphere fixed seat are provided with the through hole that position and quantity are matched with counterbore, and the brake is returned Position piston is provided with the screwed hole that position and quantity are matched with counterbore, and the brake disc fixing screws are worn after penetrating from counterbore Cross through hole to be threadedly coupled with screwed hole, the return wave washer is arranged at the front end face of magnetosphere fixed seat and brake resetting piston Rear end face between cause magnetosphere fixed seat front end face and brake resetting piston rear end face leave gap, the magnetosphere is fixed Push rod installing hole is along the circumferential direction also laid with seat, the brake push rod is installed in push rod installing hole, the brake top Rod rear end face is contacted with brake disc front end face and front end face is contacted with brake resetting piston rear end face, and the frictional disk is fixed On driving screw and front end face and brake disc rear end face leave gap.

Magnetosphere is installed with coaxially around magnetosphere fixed seat in the magnetosphere fixed seat, and the air cylinder device outer wall is in magnetosphere work Make original position and final position corresponding position is respectively provided with magnetic induction proximity switch one and magnetic induction proximity switch two, the cylinder Device is provided with the first air inlet/outlet, the second air inlet/outlet, is respectively equipped with use on first air inlet/outlet, the second air inlet/outlet In the regulation valve union A, the regulation valve union B that adjust gas turnover uninterrupted.

In order to be able to adjust the length of idle stroke, the idle stroke governor motion includes being movably set in nut piston bar periphery Idle stroke adjusting washer (disk), the idle stroke adjusting nut for being threadedly connected to nut piston rod rear end and idle stroke tight spiral shell on wall Mother, the front end face of the idle stroke fastening screw nut hold out against the rear end face of idle stroke adjusting nut.

In order that interior axle can not rotate relative to sleeve body but can relative sleeve body move axially, the sleeve body cylindrical tight Coordinate and be fixedly mounted in the medium pore of rotor core, the back segment coaxial sleeve of the interior axle is located in axle sleeve body, in the interior axle Axially distributed keyway is provided with, guide pin between the sleeve body and interior axle, is also equipped with, peace is fixed in one end of the guide pin Loaded on sleeve body, the other end width of the guide pin matches and is slidably connected in keyway with width of keyway, so that Interior axle can not rotate relative to sleeve body but can relative sleeve body axial movement.

The connection member for installing screw tap or screw die includes that chuck and chuck nut, interior axle front center are provided with use Carry out the internal taper hole being connected with chuck, interior axle front end periphery is provided with the external screw thread for being connected with chuck nut.

For than prior art, the utility model has advantages below：

(1) the utility model provide Aeroassisted idle stroke self adaptation tooth machining unit, can not only utilize air cylinder device come The fast advance and retreat of idle stroke is realized, and pitch adaptation spring that can be in tapping by compressing between driving screw and interior axle makes Interior axle can carry out axially adjustable complete tapping so as to adapt to automatically the pitch of screw tap or screw die, be conducive to simplifying structure and raising Work efficiency, adapts to the tapping of different pitch, applied range；

(2) the self adaptation tooth machining unit of the Aeroassisted idle stroke that the utility model is provided, electric machine main shaft is resolved into by axle Body and interior axle composition, sleeve body are fixedly installed in rotor core medium pore, and interior axle can not rotate relative to sleeve body but can phase Sleeve body is moved axially, interior axle therefore operationally can be directly used as lifting shaft, ined succession driving screw rotation using interior axle Then nut piston bar and idle stroke piston are not rotated the advance and retreat of realizing interior axle during work, so as to save power transmission shaft, belt, from Clutch and gear, simplify structure, low cost of manufacture；

(3) the self adaptation tooth machining unit of the Aeroassisted idle stroke that the utility model is provided, driving screw can not turn with respect to interior axle Dynamic but energy is moved relative to internal axle axial, and compressing between driving screw and interior axle has pitch to adapt to spring, when screw tap or the pitch of screw die When different with the pitch of driving screw, that the elastic force that pitch adapts to spring can be overcome to carry out upwards is axially adjustable completing tapping for interior axle, goes Except the trouble of more gear changing, work efficiency is improve；

(4) the self adaptation tooth machining unit of the Aeroassisted idle stroke that the utility model is provided, is provided with braking mechanism, can be in interior axle The inertial rotation of electric machine assembly is made quickly to stop after return and electric machine assembly shutdown；

(5) the self adaptation tooth machining unit of the Aeroassisted idle stroke that the utility model is provided, is provided with magnetosphere, magnetic induction and is close to and opens One and magnetic induction proximity switch two, first the first inlet charge is closed, air pressure drives the screw die or screw tap of connection in interior axle quick The home extending out on surface of the work, when magnetic induction proximity switch one senses magnetosphere, electric machine assembly starts, by main spiral shell Bar promotes interior axle to carry out tapping, and when magnetic induction proximity switch two senses magnetosphere, tapping is completed, and electric machine assembly is inverted, and drives Interior axle retract, when magnetic induction proximity switch one senses magnetosphere again, electric machine assembly stop, the first air inlet lose heart, second Inlet charge, air pressure drive driving screw and interior axle returning quickly, while braking mechanism makes the inertial rotation of electric machine assembly quick Stop, whole tapping process control is accurate, high degree of automation；

(6) the self adaptation tooth machining unit of the Aeroassisted idle stroke that the utility model is provided, when the pitch of driving screw is more than institute During the pitch of screw tap to be mounted or screw die, as screw tap or screw die are also more than tapping not in contact with the speed that interior axle during workpiece moves ahead When the speed that moves ahead of interior axle, further can shorten needed for screw tap or screw die from home to contact workpiece this segment distance when Between, further improve operating efficiency.

Description of the drawings

The utility model is described in further detail in conjunction with the embodiments with reference to the accompanying drawings：

Fig. 1 is the structural representation of the self adaptation tooth machining unit of the utility model Aeroassisted idle stroke；

Fig. 2 is the close-up schematic view at A positions in Fig. 1；

Fig. 3 is the close-up schematic view at B positions in Fig. 1；

Fig. 4 is the three dimensional structure diagram of braking mechanism and driving screw in Fig. 1；

Fig. 5 is the three-dimensional structure explosive view that driving screw in Fig. 1, interior axle, guide pin, pin and pitch adapt to spring.

Symbol description in figure：1st, electric machine assembly, 101, housing, 102, stator, 103, rotor core, 104, sleeve body, 105th, interior axle, 1051, duct is installed, 1052, long slot bore, 1053, keyway, 106, guide pin, 2, screw-and-nut mechanism, 201st, driving screw, 202, nut piston bar, 203, idle stroke piston, 204, pin, 3, air cylinder device, 31, magnetic induction is close to and opens Guan Yi, 32, magnetic induction proximity switch two, the 33, first air inlet, the 34, second air inlet, 35, adjust valve union A, 36, regulating valve Joint B, 4, braking mechanism, 401, resetting piston bar, 402, brake resetting piston, 4021, screwed hole, 403, return Corrugation pad Circle, 404, magnetosphere fixed seat, 4041, through hole, 4042, push rod installing hole, 4043, magnetosphere, 405, screw-bearing, 406, brake Disk, 4061, counterbore, 407, brake push rod, 408, brake disc fixing screws, 409, frictional disk, 5, idle stroke governor motion, 51, Idle stroke adjusting washer (disk), 52, idle stroke adjusting nut, 53, idle stroke fastening screw nut, 6, pitch adapt to spring, 701, chuck, 702nd, chuck nut.

Specific embodiment

The utility model content is described in detail with reference to Figure of description and specific embodiment：

As Figure 1-5, a kind of self adaptation tooth machining unit of the Aeroassisted idle stroke for providing for the utility model, including electricity Thermomechanical components 1, the electric machine assembly 1 are included for fixedly mounting the housing 101 being connected with external rack, being fixed in housing 101 Stator 102, the rotor core 103 being movably set in the middle part of stator 102 and the motor master being arranged in the middle part of rotor core 103 Axle；The electric machine main shaft is movably set in by the sleeve body 104 being coaxially fixedly installed in 103 medium pore of rotor core and coaxially Interior axle 105 in 104 body of sleeve body is constituted, and the two ends of the sleeve body 104 are rotationally connected with housing 101, the interior axle 105 Can not rotate relative to sleeve body 104 but can relative sleeve body 104 move axially, the front end of interior axle 105 is provided with for installing silk Cone or the connection member of screw die；The self adaptation tooth machining unit also includes carrying out the screw rod spiral shell of tapping for driving interior axle 105 to stretch Female transmission mechanism 2, be fixedly arranged on 101 rear end of housing and be connected with screw-and-nut mechanism 2 in idle stroke drive The air cylinder device 3 of 105 fast advance and retreat of interior axle, it is arranged in 3 cylinder body of air cylinder device and is connected with screw-and-nut mechanism 2 For returning in interior axle 105 and making the braking mechanism 4 and be arranged at that electric machine main shaft stopped operating rapidly after electric machine assembly 1 is shut down The idle stroke governor motion 5 of 2 rear end of screw-and-nut mechanism；The screw-and-nut mechanism 2 includes driving screw 201, spiral shell Female piston rod 202 and idle stroke piston 203；201 front end of the driving screw stretch in sleeve body 104 and with 105 rear end of interior axle Coaxially connected, the driving screw 201 can not be rotated relative to interior axle 105 but the relative interior axle 105 of energy is moved axially, the driving screw 201 middle part is located in 3 cylinder body of air cylinder device, and the rearward end of the driving screw 201 is provided with external screw thread and is partly placed on cylinder Outside 3 cylinder body of device, the nut piston bar 202 screws up coaxial pairing with 201 rearward end screw thread of driving screw and is connected and nut piston The pitch of bar 202 and 201 screw thread of driving screw more than or equal to screw tap to be mounted or screw die pitch；The nut piston bar 202 periphery wall is slidably connected on air cylinder device 3 and front end stretch into coaxial with idle stroke piston 203 in 3 cylinder body of air cylinder device It is fixedly connected, the periphery wall of the idle stroke piston 203 is slidably connected in 3 cylinder body of air cylinder device；The self adaptation tooth machining unit Also include being arranged between interior axle 105 and driving screw 201 for compensation 105 the installed screw tap of interior axle in tapping or screw die with Driving screw 201 advances because pitch is different or retreats the pitch adaptation spring 6 of produced range difference.

As shown in Figure 1, shown in Figure 5, it is coaxially provided with what diameter and 201 front end optical axis of driving screw matched in 105 body of the interior axle Duct 1051 is installed, 201 front end optical axis of the driving screw is movably set in installation duct 1051, and 105 top of the interior axle sets There is axially distributed long slot bore 1052, diameter is installed with 201 front end optical axis of the driving screw with 1052 width phase of long slot bore The pin 204 of coupling, the pin 204 are snug fit in long slot bore 1052 and cause driving screw 201 from relative 105 turns of interior axle The relative interior axle 105 of dynamic but energy is moved axially, and the pitch adaptation spring 6 is arranged in installation duct 1051 and compression is in peace Between dress 201 front end surface of 1051 front end face of duct and driving screw.

As shown in Figure 1, Figure 2, Figure 4 shows, the braking mechanism 4 includes resetting piston bar 401, brake resetting piston 402, return Wave washer 403, magnetosphere fixed seat 404, screw-bearing 405, brake disc 406, brake push rod 407, brake disc fixing screws 408th, frictional disk 409；The resetting piston bar 401 is coaxially movably set in 201 middle part periphery wall of driving screw and rear end and brake Resetting piston 402 is fixedly and coaxially connected, and 401 front end of resetting piston bar is slidably connected in sleeve body 104, described brakes back Position 402 periphery wall of piston is slidably connected in 3 cylinder body of air cylinder device, and the periphery wall of the magnetosphere fixed seat 404 is slidably connected to In 3 cylinder body of air cylinder device and it is rotationally connected with driving screw 201 by screw-bearing 405, the brake disc 406 is solid positioned at magnetosphere 404 rear end of reservation and plural counterbore 4061 is along the circumferential direction laid with, the magnetosphere fixed seat 404 is provided with position The through hole 4041 matched with counterbore 4061 with quantity, the brake resetting piston 402 be provided with position and quantity with heavy The screwed hole 4021 that hole 4061 matches, the brake disc fixing screws 408 from counterbore 4061 penetrate after through through hole 4041 with Screwed hole 4021 is threadedly coupled, and the return wave washer 403 is arranged at the front end face of magnetosphere fixed seat 404 and brake return is lived The rear end face of the front end face and brake resetting piston 402 of magnetosphere fixed seat 404 is caused to leave gap between the rear end face of plug 402, Push rod installing hole 4042 is along the circumferential direction also laid with the magnetosphere fixed seat 404, and the brake push rod 407 is installed on top In bar installing hole 4042, brake 407 rear end face of push rod is contacted with 406 front end face of brake disc and front end face and brake return 402 rear end face of piston contacts, and the frictional disk 409 is fixedly arranged on driving screw 201 and front end face is stayed with 406 rear end face of brake disc There is gap.

As shown in figure 1, magnetosphere 4043 is coaxially installed with around magnetosphere fixed seat 404 in the magnetosphere fixed seat 404, described 3 outer wall of air cylinder device is respectively provided with magnetic induction proximity switch 1 in 4043 work starting position of magnetosphere and final position corresponding position With magnetic induction proximity switch 2 32, the air cylinder device 3 is provided with the first air inlet/outlet 33, the second air inlet/outlet 34, and described Be respectively provided with one air inlet/outlet 33, the second air inlet/outlet 34 adjust gas turnover uninterrupted regulation valve union A35, Adjust valve union B36.

As shown in figure 1, the idle stroke governor motion 5 includes the sky being movably set on 202 periphery wall of nut piston bar Stroke adjustment packing ring 51, the idle stroke adjusting nut 52 and idle stroke fastening screw nut that are threadedly connected to 202 rear end of nut piston bar 53, the front end face of the idle stroke fastening screw nut 53 holds out against the rear end face of idle stroke adjusting nut 52.

As shown in Figure 1, shown in Figure 5, the cylindrical of the sleeve body 104 is tightly fixed installed in the medium pore of rotor core 103 In, in sleeve body 104, the interior axle 105 is provided with axially distributed keyway to the back segment coaxial sleeve of the interior axle 105 1053, guide pin 106 is also equipped between the sleeve body 104 and interior axle 105, one end of the guide pin 106 is fixedly installed in On sleeve body 104, the other end width of the guide pin 106 matches and is slidably connected to keyway 1053 with 1053 width of keyway Interior, so that interior axle 105 can not be rotated relative to sleeve body 104 but the relative sleeve body 104 of energy is moved axially.

As shown in figure 1, the connection member for installing screw tap or screw die includes chuck 701 and chuck nut 702, interior 105 front center of axle is provided with the internal taper hole for being connected with chuck 701,105 front end periphery of interior axle be provided with for chuck nut The external screw thread of 702 connections.

The operation principle of the utility model is：The demand for being first according to actual condition sets self adaptation tooth machining unit sky to adjust The length of stroke：As shown in figure 1, turning on idle stroke fastening screw nut 53 and idle stroke adjusting nut 52, the sky of proper height is placed Stroke adjustment packing ring 51, then screw on again idle stroke fastening screw nut 53 and idle stroke adjusting nut 52, then adjustment magnetic induction connect Nearly switch 1 and position of the magnetic induction proximity switch 2 32 on air cylinder device 3, magnetic induction proximity switch 1 should be located at sky The corresponding position of 4043 position of magnetosphere after the completion of stroke, magnetic induction proximity switch 2 32 should be located at tapping to magnetic after designated depth Enclose the corresponding position of 4043 positions.Then adjustment adjusts valve union A35 and adjusts valve union B36, and regulation cylinder is in unit Between in intake and exhaust amount size, that is, adjust idle stroke speed.

Start shooting by after adjusting idle stroke length and no-load speed, after start, the course of work is as follows：

First air inlet first, 33 air inlet, air pressure drive the 203 quick forward movement of idle stroke piston, idle stroke piston 203 drive nut piston bar 202 that is connected or being indirectly connected with, idle stroke adjusting nut 52, idle stroke fastening screw nut 53, master Screw rod 201, braking mechanism 4 and interior axle 105 are quick together to be moved forward, until the front end face of idle stroke adjusting nut 52 encounters sky During the rear end face of stroke adjustment packing ring 51, movement stops, and the screw die for now connecting in interior axle or screw tap are located at the peace on surface of the work All positon, magnetosphere 4043 are located at the corresponding position of one 31 position of magnetic induction proximity switch.

When magnetic induction proximity switch 1 senses magnetosphere 4043, electric machine assembly starts, and fixes with rotor core 103 and connects The sleeve body 104 for connecing drives interior axle 105, driving screw 201, screw-bearing 405, frictional disk 409 and screw tap or screw die synchronously to rotate forward. As idle stroke piston 203 is headed on by air pressure, so idle stroke piston 203 and nut piston bar 202 can not be rotated, electric machine assembly For each revolution, interior axle 105 and driving screw 201 just advance the distance of 201 pitch of a tooth driving screw 1 rotor core 103.With When, frictional disk 409 also drive brake disc 406, screw-bearing 405, magnetosphere fixed seat 404, magnetosphere 4043, brake push rod 407, Brake disc fixing screws 408, brake resetting piston 402 and 401 DL synchronization of resetting piston bar advance.

After the screw tap or screw die that interior axle 105 of ining succession is rotationally advancing touches workpiece, tapping pace is by screw tap or plate The pitch control of tooth itself, as the forward travel distance that driving screw 201 is produced relative to mother nut 202 for each revolution is intrinsic , so, become the to advance distance of a tooth screw tap or screw die pitch of interior axle 105 enters working line to driving screw 201 for each revolution Journey, in the case where 201 pitch of driving screw is more than screw tap or screw die pitch, often advance a tooth, and interior axle 105 all overcomes pitch to adapt to The elastic force of spring 6 carry out upwards axially adjustable come compensate the range difference away from.(screw tap or screw die spiral shell is equal in 201 pitch of driving screw In the case of, it is synchronous tapping, there is no the change of 105 pace of interior axle and retrogressing.)

When the magnetosphere 4043 of together descending advance reaches magnetic induction 2 32 position of proximity switch, tapping impulse stroke In place, when magnetic induction proximity switch 2 32 senses magnetosphere 4043, inverted by the electric machine assembly 1 of outer electrical equipment control, screw tap or plate Tooth exits workpiece along the screw thread that workpiece has been produced.When magnetosphere 4043 is backed to up to one 31 position of magnetic induction proximity switch When, screw tap or screw die reach the home above workpiece, meanwhile, pitch adapt to spring 6 synchronous interior axle 105 be pushed into relative to The original position of driving screw 201.When magnetic induction proximity switch 1 senses magnetosphere 4043 again, electric machine assembly 1 has a power failure, and second 34 air inlet of air inlet, the first air inlet 33 are lost heart, and air pressure drives brake resetting piston 402 and resetting piston bar 401 to retreat, and brakes Resetting piston 402 drives brake disc 406, screw-bearing 405, magnetosphere fixed seat 404, magnetosphere 4043, brake push rod 407, brake Disk fixing screws 408, frictional disk 409, driving screw 201, nut piston bar 202, idle stroke piston 203, idle stroke adjusting nut 52 and idle stroke fastening screw nut 53 be repositioned to initial position by the speed that initial idle stroke is advanced, a work period completes.

After electric machine assembly 1 has a power failure, as inertia motor component 1 can also rotate, while return, brake resetting piston 402 top pressure return wave washers 403 backward, make the distance between brake resetting piston 402 and magnetosphere fixed seat 404 diminish, stop Roof bar 407 heads on brake disc 406 and is moved rearwards by making gap occur between brake disc 406 and magnetosphere fixed seat 404, works as brake When the rear end face of disk 406 encounters the front end face of frictional disk 409, the front end face of the rear end face of brake disc 406 and frictional disk 409 is produced Friction, makes the inertial rotation of electric machine assembly 1 quickly stop.

Above-mentioned specific embodiment is simply explained in detail to the technical solution of the utility model, and the utility model is not Above-described embodiment is only limited only to, and every any improvement or replacement according to the utility model principle all should be new in this practicality Within the protection domain of type.

Claims (7)

1. a kind of self adaptation tooth machining unit of Aeroassisted idle stroke, it is characterised in that：Including electric machine assembly (1), the group of motors Part (1) include for external rack fixed installation the housing (101) being connected, the stator (102) being fixed in housing (101), The rotor core (103) being movably set in the middle part of stator (102) and the electric machine main shaft being arranged in the middle part of rotor core (103)； The electric machine main shaft is slidingly connected by the sleeve body (104) being coaxially fixedly installed in rotor core (103) medium pore and coaxially In internal interior axle (105) composition of sleeve body (104), the two ends of sleeve body (104) are rotationally connected with housing (101), Interior axle (105) can not rotate relative to sleeve body (104) but sleeve body (104) can move axially relatively, before interior axle (105) End is provided with for installing the connection member of screw tap or screw die；

The self adaptation tooth machining unit also include for drive the flexible screw-and-nut mechanism (2) for carrying out tapping of interior axle (105), Be fixedly arranged on housing (101) rear end and be connected with screw-and-nut mechanism (2) in idle stroke drive interior axle (105) The air cylinder device (3) of fast advance and retreat, it is arranged in air cylinder device (3) cylinder body and is connected with screw-and-nut mechanism (2) For interior axle (105) return and make after electric machine assembly (1) is shut down braking mechanism (4) that electric machine main shaft stopped operating rapidly and It is arranged at the idle stroke governor motion (5) of screw-and-nut mechanism (2) rear end；

Described screw-and-nut mechanism (2) include driving screw (201), nut piston bar (202) and idle stroke piston (203)；Stretch in sleeve body (104) and, the main spiral shell coaxially connected with interior axle (105) rear end driving screw (201) front end Bar (201) can not be rotated relative to interior axle (105) but interior axle (105) can be moved axially relatively, the middle position of driving screw (201) In air cylinder device (3) cylinder body, the rearward end of driving screw (201) is provided with external screw thread and is partly placed on air cylinder device (3) Outside cylinder body, nut piston bar (202) screw up coaxial pairing with driving screw (201) rearward end screw thread and are connected and nut piston bar (202) with the pitch of driving screw (201) screw thread more than or equal to screw tap to be mounted or screw die pitch；The nut piston The periphery wall of bar (202) is slidably connected to air cylinder device (3) above and front end is stretched in air cylinder device (3) cylinder body and idle stroke piston (203) it is fixedly and coaxially connected, the periphery wall of idle stroke piston (203) is slidably connected in air cylinder device (3) cylinder body；

The self adaptation tooth machining unit also include being arranged between interior axle (105) and driving screw (201) for compensating in tapping Interior axle (105) institute installation screw tap or screw die advance because pitch is different with driving screw (201) or retreat the spiral shell of produced range difference Away from adaptation spring (6).

2. the self adaptation tooth machining unit of Aeroassisted idle stroke according to claim 1, it is characterised in that：The interior axle (105) the installation duct (1051) that diameter is matched with driving screw (201) front end optical axis, the driving screw are coaxially provided with vivo (201) front end optical axis is movably set in installation duct (1051), and interior axle (105) top is provided with axially distributed elongated slot Hole (1052), is installed with the pin that diameter is matched with long slot bore (1052) width on the optical axis of driving screw (201) front end (204), pin (204) are snug fit in long slot bore (1052) and driving screw (201) can not be turned with respect to interior axle (105) Dynamic but can relative interior axle (105) move axially, the pitch adapts to spring (6) and is arranged in installation duct (1051) and compresses make For installing between duct (1051) front end face and driving screw (201) front end surface.

3. the self adaptation tooth machining unit of Aeroassisted idle stroke according to claim 1, it is characterised in that：The braking mechanism (4) resetting piston bar (401), brake resetting piston (402), return wave washer (403), magnetosphere fixed seat (404), spiral shell are included Rod bearing (405), brake disc (406), brake push rod (407), brake disc fixing screws (408), frictional disk (409)；

Resetting piston bar (401) are coaxially movably set in periphery wall and rear end and brake return work in the middle part of driving screw (201) Plug (402) is fixedly and coaxially connected, and resetting piston bar (401) front end is slidably connected in sleeve body (104), described brakes back Position piston (402) periphery wall is slidably connected in air cylinder device (3) cylinder body, and the periphery wall of magnetosphere fixed seat (404) slides It is connected in air cylinder device (3) cylinder body and is rotationally connected with driving screw (201) by screw-bearing (405), the brake disc (406) it is located at magnetosphere fixed seat (404) rear end and is along the circumferential direction laid with plural counterbore (4061), the magnetosphere Fixed seat (404) is provided with the through hole (4041) that position and quantity are matched, the brake resetting piston with counterbore (4061) (402) screwed hole (4021) that position and quantity are matched with counterbore (4061), the brake disc fixing screws are provided with (408) it is threadedly coupled through through hole (4041) with screwed hole (4021) after penetrating from counterbore (4061), the return wave washer (403) it is arranged between the front end face of magnetosphere fixed seat (404) and the rear end face of brake resetting piston (402) so that magnetosphere is fixed The rear end face of the front end face of seat (404) and brake resetting piston (402) leaves gap, and described magnetosphere fixed seat (404) are upper along circle Circumferential direction is also laid with push rod installing hole (4042), and brake push rod (407) is installed in push rod installing hole (4042), institute State brake push rod (407) rear end face to contact with brake disc (406) front end face and front end face and brake resetting piston (402) rear end Face contacts, and it is upper and between front end face and brake disc (406) rear end face leave that frictional disk (409) are fixedly arranged on driving screw (201) Gap.

4. the self adaptation tooth machining unit of Aeroassisted idle stroke according to claim 3, it is characterised in that：The magnetosphere is fixed Seat (404) is upper to be coaxially installed with magnetosphere (4043) around magnetosphere fixed seat (404), and air cylinder device (3) outer wall is in magnetosphere (4043) work starting position and final position corresponding position are respectively provided with magnetic induction proximity switch one (31) and magnetic induction is close to and opens Two (32) are closed, air cylinder device (3) are provided with the first air inlet/outlet (33), the second air inlet/outlet (34), first turnover Be respectively provided with gas port (33), the second air inlet/outlet (34) adjust gas turnover uninterrupted regulation valve union A (35), Adjust valve union B (36).

5. the self adaptation tooth machining unit of Aeroassisted idle stroke according to claim 1, it is characterised in that：The idle stroke is adjusted Section mechanism (5) includes the idle stroke adjusting washer (disk) (51) being movably set on nut piston bar (202) periphery wall, is threadedly connected to The idle stroke adjusting nut (52) and idle stroke fastening screw nut (53) of nut piston bar (202) rear end, the idle stroke tight spiral shell The front end face of female (53) holds out against the rear end face of idle stroke adjusting nut (52).

6. the self adaptation tooth machining unit of the Aeroassisted idle stroke according to any one of claim 1-5, it is characterised in that：Institute State the cylindrical of sleeve body (104) to be tightly fixed in the medium pore of rotor core (103), after interior axle (105) In sleeve body (104), interior axle (105) are provided with axially distributed keyway (1053), the axle sleeve to section coaxial sleeve Guide pin (106) is also equipped between body (104) and interior axle (105), and the one end of guide pin (106) is fixedly installed in sleeve body (104), on, the other end width of guide pin (106) matches and is slidably connected to keyway with keyway (1053) width (1053) in, so that interior axle (105) can not rotate relative to sleeve body (104) but can relative sleeve body (104) axial movement.

7. the self adaptation tooth machining unit of the Aeroassisted idle stroke according to any one of claim 1-5, it is characterised in that：Institute Stating includes chuck (701) and chuck nut (702), interior axle (105) front center for installing the connection member of screw tap or screw die The internal taper hole for being connected is provided with chuck (701), and interior axle (105) front end periphery is provided with for being connected with chuck nut (702) External screw thread.