A kind of screw thread pair automatic screwing device
Technical field
The utility model belongs to industry assembling technical field, in particular to a kind of screw thread pair automatic screwing device.
Background technique
Screw driving machine has following structure type in the prior art: the patent of Patent No. CN206326541U discloses one kind certainly
Dynamic screw on nut device, is being tightened, Patent No. by the way that nut is placed in the slot of axle sleeve 6 in advance
The patent of CN203426688U discloses a kind of automatic Screw driving machine of screw thread, and inner thread part is placed on platform 8 and is nested in magnetic
On cylindrical boss on power shaft coupling, threaded male component is passed through into the column of the cylindrical boss upper surface of fabrication hole and shaft coupling
Pin cooperation, is mounted on the upper surface of cylindrical boss, both structure types are required for screw or nut to be pre-installed in and be set
Positioning is set, and is less applicable in if in the case that screw thread is more, and be can not achieve and directly carried out to the screw thread pair on frock clamp
It tightens.
Utility model content
In order to solve the problems, such as that Screw driving machine cannot directly tighten the screw thread pair on frock clamp in the prior art, this
Utility model provides a kind of device that automatic tightening can be directly carried out to the screw thread pair on frock clamp.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of screw thread pair automatic screwing device, including connector sleeve are fixedly connected with its rotation of driving on the connector sleeve
First driving device and drive the second driving device of its movement, sliding axle, the connection are equipped in the connector sleeve
It covers inner wall and is equipped with sliding slot, be fixed on the sliding axle and the matched sliding block of sliding slot, the fixed company in the sliding axle lower end
It is connected to tightening tool, elastic device is equipped between the connector sleeve and sliding axle.
Further, the first driving device includes motor and speed reducer, the output shaft of the motor and deceleration
Machine input shaft is fixed, and the output shaft of the speed reducer is fixedly connected with connector sleeve.
Further, second driving device includes the linear mould group of X-direction for being drivingly connected set movement, Y-direction line
Property mould group and the linear mould group of Z-direction.
Further, the connector sleeve center offers and the matched through-hole of speed reducer output shaft, the speed reducer
It is connected by key between output shaft and through-hole, described connector sleeve one end is withstood on the body of speed reducer, outside the through-hole of connector sleeve
End is equipped with a platform sling, and the speed reducer output shaft end is equipped with the first threaded hole, be equipped with outside the platform sling one with
First screw of the first threaded hole cooperation, first screw withstand on platform sling on connector sleeve.
Further, the elastic device is the first spring.
As one embodiment of the utility model, the screw thread pair includes screw bolt and nut, the tightening tool
To tighten mold with the nut that nut cooperates.
As another embodiment of the utility model, the screw thread pair includes screw bolt and nut, and described tightens work
Tool includes ratchet head, is connected with the sleeve to match with nut below the ratchet head.
Further, it is fixed with fixing sleeve below the sliding axle, the ratchet head is located inside fixing sleeve, described
Fixing sleeve side wall offer several second threaded holes, the gear for being against ratchet head is connected in second threaded hole
The second screw in slot.
Further, it is fixedly connected with gland below the fixing sleeve, offers third spiral shell on the gland side wall
Pit is connected with third screw in the third threaded hole, and second spring, institute are equipped between the third screw and sleeve
The third threaded hole stated is symmetrical set on gland or is circumferentially uniformly arranged.
Further, the ratchet head upper end has the first ladder, and the ratchet head lower end has the second ladder, institute
The fixing sleeve inner wall stated is equipped with the first stepped groove with the first staircase match, and the gland upper end is equipped with and the second ladder phase
The second stepped groove matched.
Further, the sliding axle bottom end is equipped with third ladder, is fixed with center below the connector sleeve and opens
The pressing plate in hole, the upper end of the pressing plate are equipped with the third stepped groove for carrying out limit slippage shaft position with third staircase match.
The utility model has the advantages that
(1) the utility model can tighten the screw thread pair on frock clamp, in the case where screw thread pair is more, only
Workpiece need to be fixed on frock clamp, then device for screwing up moves to corresponding position and tightened, and work efficiency is high;
(2) the utility model rundown process is driven by motor, and can accurately control and tighten position or peak torque;
(3) sleeve can shake with respect to ratchet head, and when positioning has small deviations, bushing core and nut center are endless
Entirely to just, when tightening, sleeve can deviate a certain distance to nut location, tighten process to guarantee to smoothly complete;
(4) when tightening movement completion, after sleeve is pulled up from nut, under the action of second spring, sleeve can be returned to
Going on smoothly for movement is tightened to facilitate in center next time.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the cross-sectional view of the utility model automatic screwing device embodiment 1;
Fig. 2 is the partial enlarged view in Fig. 1 at C;
Fig. 3 is the top view of the utility model automatic screwing device embodiment 2;
Fig. 4 is the cross-sectional view in Fig. 3 along A-A;
Fig. 5 is the partial enlarged view in Fig. 4 at D;
Fig. 6 is the cross-sectional view in Fig. 3 along B-B;
Fig. 7 is the partial enlarged view in Fig. 6 at E;
Fig. 8 is the utility model automatic screwing device use state diagram.
Wherein, 1, motor, 2, speed reducer, 3, connector sleeve, 31, sliding slot, 4, sliding axle, 41, sliding block, 42, third ladder, 5,
Platform sling, the 6, first screw, the 7, first spring, 8, nut tighten mold, 81, fourth order ladder, 9, ratchet head, the 91, first ladder,
92, the second ladder, 10, sleeve, 11, fixing sleeve, the 111, first stepped groove, the 12, second screw, 13, gland, the 131, second ladder
Slot, 14, third screw, 15, second spring, 16, pressing plate, 161, third stepped groove, 17, the linear mould group of X-direction, 18, Y-direction line
Property mould group, 19, the linear mould group of Z-direction.
Specific embodiment
Such as Fig. 1-7, a kind of screw thread pair automatic screwing device, including connector sleeve 3, be fixedly connected on connector sleeve 3 driving its
The first driving device of rotation and the second driving device for driving its movement, connector sleeve 3 is interior to be equipped with sliding axle 4,3 inner wall of connector sleeve
Be equipped with sliding slot 31, be fixed on sliding axle 4 with the matched sliding block 41 of sliding slot 31,4 lower end of sliding axle, which is fixedly connected with, tightens work
Tool is equipped with elastic device between connector sleeve 3 and sliding axle 4.In the utility model, elastic device is the first spring 7.
In the utility model, first driving device includes motor 1 and speed reducer 2, and the output shaft and speed reducer 2 of motor 1 are defeated
Enter axis to fix, the output shaft of speed reducer 2 is fixedly connected with connector sleeve 3.
In the utility model, the second driving device includes the linear mould group 17 of X-direction for being drivingly connected 3 movement of set, Y-direction line
Property mould group 18 and the linear mould group 19 of Z-direction.
3 center of connector sleeve offer with the matched through-hole of 2 output shaft of speed reducer, between 2 output shaft of speed reducer and through-hole lead to
Key connection is crossed, 3 one end of connector sleeve is withstood on the body of speed reducer 2, and the through-hole outer end of connector sleeve 3 is equipped with a platform sling 5, speed reducer
2 output shaft ends are equipped with the first threaded hole, and the first screw 6 of one with the cooperation of the first threaded hole, the first spiral shell are equipped with outside platform sling 5
Nail 6 withstands on platform sling 5 on connector sleeve 3.
Embodiment 1:
Such as Fig. 1-2, screw thread pair includes screw bolt and nut, and tightening tool is that the nut cooperated with nut tightens mold 8.
Nut tightens mold 8 and is equipped with fourth order ladder 81, the pressing plate 16 of center opening is fixed with below connector sleeve 3, specifically
, connector sleeve 3 and pressing plate 16 are connected by screw to, and the upper end of pressing plate 16 is equipped with for matching with fourth order ladder 81 and limits nut
Tighten the third stepped groove 161 of 8 extreme position of mold.
Embodiment 2:
Such as Fig. 3-7, screw thread pair includes screw bolt and nut, and tightening tool includes ratchet head 9, be connected with below ratchet head 9 with
The sleeve 10 that nut matches.
Fixing sleeve 11 is fixed with below sliding axle 4, ratchet head 9 is located inside fixing sleeve 11, and 11 side wall of fixing sleeve offers
Several second threaded holes, the second screw 12 being connected in the second threaded hole in the gear grooved for being against ratchet head 9.
It is fixedly connected with gland 13 below fixing sleeve 11, third threaded hole, third threaded hole are offered on 13 side wall of gland
It is inside connected with third screw 14, second spring 15 is equipped between third screw 14 and sleeve 10, third threaded hole is on gland 13
It is symmetrical set or is circumferentially uniformly arranged.
9 upper end of ratchet head has the first ladder 91, and 9 lower end of ratchet head has the second ladder 92, and 11 inner wall of fixing sleeve is equipped with
With matched first stepped groove 111 of the first ladder 91,13 upper end of gland is equipped with the second stepped groove to match with the second ladder 92
131.By ratchet head 9 in X, tri- directions Y, Z are mobile and rotate around X and Y-direction for first stepped groove 111 and the second stepped groove 131
Freedom degree limit, the second screw 12 limits ratchet head 9 along the freedom degree that Z axis rotates, in this way, ratchet head 9 will not phase
Or rotation mobile for sliding axle 4.
4 bottom end of sliding axle is equipped with third ladder 42, and the pressing plate 16 of center opening, pressing plate 16 are fixed with below connector sleeve 3
Upper end be equipped with and limit the third stepped groove 161 of 4 extreme position of sliding axle for matching with third ladder 42.
Ratchet head 9 and sleeve 10 all can directly be bought, and have telescopic hoodle, set on 9 side wall of ratchet head
Cylinder 10 inner walls on have with the matched groove of hoodle, and between sleeve 10 and ratchet head 9 have certain gap, in this way, sleeve
10 can shake with respect to ratchet head 9, and when positioning has small deviations, 10 center of sleeve and nut center to be tightened are incomplete
To just, when tightening, sleeve 10 can deviate a certain distance to nut location, to guarantee to complete to tighten process, when tightening
Movement is completed, and after sleeve 10 is pulled up from nut, under the action of second spring 15, sleeve 10 can recenter, with
It is convenient to tighten going on smoothly for movement next time.
The course of work:
Such as Fig. 8, the screw thread pair tightened will be needed to be pre-positioned first, such as screw bolt and nut, first carries out positioning and pre-
It twists, is then attached on the frock clamp below tightening tool, motor 1 rotates, and torque passes to connector sleeve from speed reducer 2
3, connector sleeve 3 delivers torque to sliding axle 4 by sliding block 41, and last sliding axle 4 drives the tightening tool being fixed thereon
Rotation, meanwhile, sliding axle 4 and tightening tool can slide up and down.
After opening motor 1, device for screwing up declines under the driving of the second driving device, such tightening tool is .ed while rotating
Decline, if tightening tool and not having to tightening piece fully mated at the beginning, tightening tool can be under the action of the first spring
Retract and withstand on in tightening piece, with the rotation of motor, when rotating to some position, tightening tool and to tightening piece just
It can cooperate well, tightening tool declines and cooperates on to tightening piece at this time, starts to tighten, and when tightening, work is tightened in the driving of motor 1
Tool declines according to helix, and in actual use, tightening tool can be screwdriver, and corresponding to tightening piece is soket head cap screw
Deng it is hex-head nut to tightening piece that in the utility model embodiment 1, tightening tool, which is that nut tightens mold 8, this is practical new
In type embodiment 2, it is hex-head nut to tightening piece that tightening tool, which is sleeve 10,.It is tightened to predetermined position or reaches default torsion
Square, motor 1 stall, and device for screwing up rises overally under the driving of the second driving device.
It should be appreciated that specific embodiment described above is only used for explaining the utility model, it is not used to limit this reality
With novel.By the utility model the obvious changes or variations extended out of spirit still in the utility model protection
Among range.