Utility model content
The purpose of this utility model is exactly to provide a kind of electric screwdriver screwdriver bit to solve the above-mentioned problems in the prior art
Fast replacing device and screwdriver bit quick-changing type screw tightening machine.
The purpose of this utility model is achieved through the following technical solutions:
Electric screwdriver screwdriver bit fast replacing device, including positioning sleeve can be floated with respect to its grafting up or down one in the positioning sleeve
It covers, is plugged with the screwdriver bit installation axle for running through and connecting the positioning sleeve in the inner hole of the floating bushing, the screwdriver bit installation axle
Upper end has quick change slot, is equipped at least two through-holes on the cell wall of the quick change slot, is slidably provided in the through-hole
Length is greater than the through-hole length and both ends are the pin of outer convex globoidal;
Under normality, the floating bushing is located at a high position, and the pin corresponds to the first height of the inner hole hole wall of floating bushing, first
At height, the distance of the side wall of inner hole hole wall to quick change slot is less than the length of pin;
Pressure is stopped under state, and the floating bushing is located at low level, and the pin corresponds to the second height of the inner hole hole wall of floating bushing,
At second height, the side wall distance of inner hole hole wall to quick change slot is not less than the length of pin.
Preferably, in the electric screwdriver screwdriver bit fast replacing device, the through-hole is counterbore, and its small size end is close to described fast
Slot is changed, the pin is matched with the shape of the through-hole, and the length for the small size section sold is greater than the length of the small size section of through-hole.
Preferably, in the electric screwdriver screwdriver bit fast replacing device, the distance of side wall of the inner hole hole wall to quick change slot is
It is at least in increasing trend between one height and the second height.
Preferably, the electric screwdriver screwdriver bit fast replacing device includes positioning mechanism, and there is at least one to limit the positioning sleeve
Structure;
Press mechanism has the structure for driving the relatively described positioning sleeve of floating bushing to move down.
Preferably, in the electric screwdriver screwdriver bit fast replacing device, the press mechanism includes pressing plate, is had extremely on the pressing plate
Few half round cut of the internal diameter between the internal diameter and outer diameter of the floating bushing, the pressing plate connection drive it along first direction
And the Power Component that second direction moves back and forth.
Screwdriver bit quick-changing type screw tightening machine further includes connection institute including any of the above-described electric screwdriver screwdriver bit fast replacing device
State the electric screwdriver of screwdriver bit installation axle and the mobile mechanism that the driving electric screwdriver is mobile.
Preferably, in the screwdriver bit quick-changing type screw tightening machine, the mobile mechanism includes an at least mountable electric screwdriver
Mounting rack, 6 axis robots of its movement of mounting rack connection driving.
Preferably, in the screwdriver bit quick-changing type screw tightening machine, the mounting rack has at least two installation electric screwdrivers
Installation position, the horizontal space between adjacent installation position can adjust.
Preferably, in the screwdriver bit quick-changing type screw tightening machine, be provided on the mounting rack at least positioning to
It is screwed laser positioning sensor and/or image collection assembly a little.
The advantages of technical solutions of the utility model, is mainly reflected in:
This programme deft design, structure is simple, drapes over one's shoulders in such a way that replacement quick change is whole to substitute conventional being individually replaced
The mode of head keeps pin corresponding floating by the design to the float design of floating bushing and the hole wall of floating bushing and pin in quick change entirety
When two different heights of dynamic set, different location status can have, it is real so as to cooperate with the power output member of electric screwdriver
Now with the connection of power output member and separate, as long as therefore generate the movement for pushing floating bushing, convenient for passing through mechanical structure
Pressing action is emulated, is created condition for the quick-replaceable of screwdriver bit, convenient for the realization of automatic exchange.
And it is designed by the shape of the hole wall to floating bushing, moves pin gradually in the moving process of floating bushing, from
And situations such as capable of guaranteeing mobile smoothness and stability, avoiding the occurrence of locking or hard contact.
By shape, the size design to pin and through-hole, effectively pin can be avoided to loosen from hole, ensure that structure
Stability and reliability.
The setting of press mechanism makes automatic exchange become a reality, and improves the integrated level and the degree of automation of equipment, together
When unique press mechanism, pushing while multiple floating bushings can be carried out simultaneously, and meet the requirement of evacuation when replacement, had
Efficiency is replaced conducive to improving.
The automatic tightening machine of this programme can carry out being screwed for multiple positions simultaneously, greatly improve and be screwed efficiency, together
When can carry out being screwed while the screw of identical or different type, improve the flexibility of application, and whole equipment can be with
Realize the full process automatization operation of the installation, removal, replacement of screwdriver bit, the degree of automation significant increase.
It is positioned using vision positioning and laser ranging, can effectively ensure that the accuracy of positioning and can effectively adapt to
It, can be according to specifically wait be screwed a progress electric screwdriver position in conjunction with the mobile mechanism of electric screwdriver wait be screwed a little uncertain application scenarios
The flexible adjustment set, flexibility ratio and applicability greatly improve.
Specific embodiment
The purpose of this utility model, advantage and feature will carry out figure by the non-limitative illustration of preferred embodiment below
Show and explains.These embodiments are only the prominent examples using technical solutions of the utility model, all to take equivalent replacement or wait
Effect transformation and formed technical solution, all fall within the requires of the utility model protection within the scope of.
In the description of scheme, it should be noted that term " center ", "upper", "lower", "left", "right", "front", "rear",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of description and simplification description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " first ",
" second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.Also, in retouching for scheme
It is proximal end by the direction of proximal operator using operator as reference, the direction far from operator is distal end in stating.
The electric screwdriver screwdriver bit fast replacing device disclosed with reference to the accompanying drawing to the utility model is illustrated, as shown in Fig. 1,
Positioning sleeve 1, floating bushing 2, screwdriver bit installation axle 3, pin 4 and spring 5 including being combined into quick change whole 10, the quick change are whole
10 for connecting the power output member of screwdriver bit 6 and electric screwdriver 20.
Wherein, as shown in Fig. 1, the longitudinal section of the positioning sleeve 1 is rendered as down convex shape or taper type, the positioning sleeve
1 has the counterbore 11 with its axis co-axial, and the upper part of the counterbore 11 can slidably be plugged with floating bushing 2, institute along its hole wall
It is I-shaped for stating 21 global approximation of inner hole of floating bushing 2, and the screwdriver bit installation axle 3 through the positioning sleeve 1 is plugged in it,
The screwdriver bit installation axle 3 connects the positioning sleeve 1 and its periphery is arranged with positioned at 2 He of floating bushing for installing screwdriver bit 6
Spring 5 between positioning sleeve 1, thus the floating bushing 2 can the relatively described positioning sleeve 1 float up and down.
As shown in Fig. 1, the upper end of the screwdriver bit installation axle 3 has the quick change slot for connecting the power output member of electric screwdriver
31, the quick change slot 31 is preferably as broad as long tetragonal body or cylindrical body, naturally it is also possible to and it is other shapes, the quick change slot
At least two through-holes 32, preferably 4 are equipped on 31 cell wall, it is big to be slidably provided with length in each through-hole 32
In 32 length of through-hole and both ends 41,42 are the pin 4 of outer convex globoidal, and the shape of outer convex globoidal is convenient for replacing in subsequent screwdriver bit
When, drive the pin 4 mobile.
In addition, the through-hole 32 can be the constant hole in aperture, it is also possible to the hole with different pore size section, preferred
In implementation, as shown in Fig. 2, the through-hole 32 has close to the thin diameter section 321 of the quick change slot 31 and far from described fast
The wide section 322 of slot 31 is changed, and the shape of each pin 4 is consistent with the shape of the through-hole 32, equally includes wide section
43 and thin diameter section 44, and the length of thin diameter section 44 is greater than the length of the thin diameter section 321 of the through-hole 32, so as to effective
Pin 4 is avoided to exit from quick change slot 31, naturally it is also possible to realize by other means, such as the length of each pin 4 is greater than
The plate or radius of the side length of the quick change slot 31;Meanwhile the length of the thin diameter section 44 of the pin 4 meets when it runs through the through-hole
When 32 thin diameter section, the outer convex globoidal region at the end 41 is located in the quick change slot 31.
Since the floating bushing 2 is moving up and down, and the relative position of pin 4 can change, under normality,
Under the action of spring 5, the floating bushing 2 is located at a high position, at this point, the inner hole hole wall of the corresponding floating bushing 2 of the pin 4
The first height, at first height, the length of the distance of side wall of the inner hole hole wall to quick change slot 31 less than the pin 4
Degree, at this point, the limitation of the inner hole hole wall due to floating bushing 2, the other end of the pin 4 is extended in the quick change slot 31.
When the floating bushing 2 pushes under stress and reaches pressure only state, the pin 4 corresponds to the interior of the floating bushing 2
Second height of hole hole wall, second height are higher than first height, at the second height, the inner hole hole wall to quick change
The side wall distance of slot 31 is not less than the length of the pin 4, at this point, the pin 4 has the sky mobile to inner hole hole wall direction
Between, therefore, when the power output member of electric screwdriver is inserted into the quick change slot 31, since the end face of the pin 4 is cambered surface, so
Power output member can drive the pin 4 to exit the quick change slot 31, also, its other end is embedded into the of the floating bushing 2
In space at two height.
When no longer applying pressure to the floating bushing 2, the floating bushing 2 resets under the reaction force of spring 5, described
The inner wall shape design of floating bushing 2 can be such that pin 4 exits from the space from second height and move into quick change slot 31
And be embedded into the card slot of the power output member of quick change slot 31, to realize that electric screwdriver 20 is connected with whole 10 ground of quick change.
Further, in order to enable the movement of pin 4 gradually, as shown in Fig. 1, the side wall of the inner hole hole wall to quick change slot
Distance first height the second height between at least be in increasing trend, in addition, the second area is formed with and the pin 4
The matched groove 22 of corresponding end.
On the basis of above structure, in order to further realize the automatic replacement of screwdriver bit, as shown in attached drawing 3- attached drawing 5, institute
The electric screwdriver screwdriver bit fast replacing device stated further includes positioning mechanism 7, and there is at least one to limit the structure of the positioning sleeve 1;
Press mechanism 8 has the structure for driving the relatively described positioning sleeve 1 of floating bushing 2 to move down.
Specifically, as shown in Fig. 3, the positioning mechanism 7 includes a substrate 71 being vacantly arranged, on the substrate 71
One group of hole 72 is offered, is provided with one group of limit sleeve 73 coaxial with each hole 72 on the substrate 71, on the limit sleeve 73
With the location hole 731 coaxial with the hole 72, the diameter of the location hole 731 is greater than the thin footpath part of the positioning sleeve 1
Diameter and be less than its particle size part diameter be additionally provided on the substrate 71 and each limit sleeve 73 as shown in Fig. 4
It corresponds to and for determining the sensor 74 whether in the limit sleeve 73 with positioning sleeve 1.
Also, in preferred embodiment, as shown in attached drawing 3, attached drawing 4, the limit sleeve 73 be 4 and gap setting, it
The line of axis be straight line, quick change in them whole 10 can be used for installing the screwdriver bit 6 of identical or different type, and
And preferably in the quick change whole 10 arbitrary two for installing same screwdriver bit, other two is for installing another batch
Head.
As shown in Fig. 4, the press mechanism 8 includes pressing plate 81, and the pressing plate 81 is rendered as L shape, and in the pressure
There is half round cut 82 of at least one internal diameter between the internal diameter and outer diameter of the floating bushing 2, often on the horizontal panel of plate 81
A half round cut 82 is corresponding with 73 position of limit sleeve.
As shown in attached drawing 4, attached drawing 5, the connection of pressing plate 81 drives it longitudinal along first direction Y and second direction Z() it is past
The Power Component 83 moved again, the Power Component 83 can be various feasible structures, and such as 6 axis robots, two straight lines are led
The structure etc. of rail vertical cartel, it is preferred that it includes the first cylinder 831 being set on bracket, the work of first cylinder 831
Z extends stopper rod in a second direction and the second cylinder 832 of connection, the piston rod of second cylinder 832 extend along first direction Y,
And its longitudinal panel for connecting the pressing plate 81.
The utility model further discloses a kind of screwdriver bit quick-changing type screw tightening machine, as shown in Fig. 6, including it is any on
The electric screwdriver screwdriver bit fast replacing device stated is connected with screwdriver bit 6 on the electric screwdriver screwdriver bit fast replacing device, further includes at least one connection screwdriver bit peace
Fill the electric screwdriver 20 of axis and the mobile mechanism 30 that the driving electric screwdriver 20 is mobile.
Wherein, as shown in Fig. 6, the mobile mechanism 30 includes the mounting rack 301 of an at least mountable electric screwdriver 20, described
Mounting rack 301 has the installation position 3011 of at least two installation electric screwdrivers, and the horizontal space between adjacent installation position 3011 can be adjusted
It is whole.
From the point of view of specific, as shown in Fig. 6, the mounting rack 301 has L-shaped pedestal 3012, the pedestal 3012
High settings have a position fixed in longitudinal plate etc. installation position 3011 and one can be along the installation positions that third direction X is moved
3011, the third direction X and the first direction Y, second direction Z are vertical two-by-two, and the moveable installation position 3011 is excellent
It gated following moving structure to be moved, the installation position 3011 is set on a sliding rack 303, and the sliding rack 303 can
Two are slidingly arranged at along the guide rail 304 that third direction X is moved and it passes through the connection driving of connector (not shown)
The traveling nut of its lead screw 305 slided along the guide rail 304, the lead screw 305 are rotationally set up in the vertical backboard
In the mounting base in face, and its screw rod connects motor 306.
As shown in Fig. 7, the 6 axis machines that the mounting rack 301 drives it to move by the flanged joint on its plane of structure plate
People 302, drive the mounting rack 301 is mobile to be also possible to other its can be driven to carry out first direction, second direction certainly
And the structure of third direction movement and rotation, it is known technology herein, details are not described herein.
In addition, due to when being screwed, screw position to be screwed is often uncertain, therefore in order to increase the spirit of positioning
Activity realizes adjustment flexible, as shown in Fig. 6, is provided on the mounting rack 301 at least positioning wait be screwed a little
Both laser positioning sensor 40 and/or image collection assembly 50, preferably have, also, they are located at two electric screwdrivers 20
Between, meanwhile, they can be used for adjusting the spacing between two electric screwdrivers.
In the operational process of equipment, be not shown in the figure by PLC() etc. various feasible control equipment carry out the whole series and set
The control of received shipment row, is known technology herein, repeats no more.
When being screwed using above-mentioned screwdriver bit quick-changing type screw tightening machine, processing method is as follows:
An at least quick change whole 10 is put into a limit sleeve 73,1 position of positioning sleeve is fixed, preferably will not by S1
The quick change whole 10 with a kind of screwdriver bit is placed in two adjacent limit sleeves 73, is placed in other two limit sleeve 73 with another
A kind of quick change of screwdriver bit whole 10;Then, the notch 82 on the first cylinder 831 driving pressing plate 81 of the press mechanism is moved to
The top of the floating bushing 2, then second cylinder 832 drives the pressing plate 81 to push and stops the pressure completely of floating bushing 2.
S2 leads at this point, the robotically-driven two thereon electric screwdriver of 6 axis is moved to the top of the quick change whole 10
It crosses behind the position of laser positioning sensor 40 and determining two quick changes whole 10 of image collection assembly 50 and silk is driven by motor 306
Thick stick 305 come adjust the gap between two electric screwdrivers so that each electric screwdriver 20 it is corresponding with a quick change component and drive two electricity
The power output member criticized is inserted respectively into the quick change slot 31 of corresponding screwdriver bit installation axle 3.
S3, second cylinder 832 drive the reverse movement of pressing plate 81 to rise, and then first cylinder 831 drives
The reverse movement of pressing plate 81 resets, at this point, the pressing plate 81 no longer applies pressure to the floating bushing 2, the floating bushing 2 exists
It is resetted under the reaction force of spring 5, to gradually push each pin 4 to be embedded into the card slot of power output member, to realize electric screwdriver
20 and quick change whole 10 connection.
After completing connection, robotically-driven two electric screwdrivers 20 of 6 axis are moved at workpiece to be screwed.
S10, by vision-based detection positioning and laser ranging positioning determine at least two on the same straight line wait be screwed
The position of point.
S20, according to two positions wait be screwed between a little, the motor 306 drive lead screw 305 adjust two electric screwdrivers 20 it
Between spacing, keep each electric screwdriver 20 corresponding wait be screwed with one.
S30, then six-joint robot drives two electric screwdrivers 20 to be moved to accordingly wait be screwed a little while being screwed.
According to above-mentioned steps by after the corresponding screw tightening of the screwdriver bit, another bolt or spiral shell are carried out when needing replacing screwdriver bit
When silk is screwed, the robotically-driven two thereon electric screwdriver of 6 axis is moved to the top of two empty limit sleeves 73, and makes two
Quick change whole 10 on electric screwdriver 20 is inserted respectively into a limit sleeve 73, and then the first cylinder 831 of the press mechanism drives
Notch 82 on dynamic pressure plate 81 is moved to the top of the floating bushing 2, and then second cylinder 832 drives under the pressing plate 81
Pressure stops the pressure completely of floating bushing 2 in two quick changes whole 10 on electric screwdriver, and subsequent 6 shaft mechanical people drives the power of two electric screwdrivers
Output is exited from the quick change slot 31 in the screwdriver bit installation axle 3, and the quick change being moved in other two limit sleeve 73 is whole
The top of body 10, and according to the replacement of above-mentioned S2-S3 step progress quick change whole 10.
Still there are many embodiment, all technologies formed using equivalents or equivalent transformation for the utility model
Scheme is all fallen within the protection scope of the utility model.