CN207509257U - Coupling arrangement - Google Patents

Abstract

The utility model is related to a kind of coupling arrangements, it is used to the first component being connected to second component with discharging, the first component includes the locking component that can substantially move radially and the actuating member that can move the locking component, the second component includes that the receiving part of the locking component can be received, wherein, during the first component and the second component are combined together and start the actuating member, the locking component is entrained into the receiving part, cause the first component and the second component axial lock, wherein, the actuating member, the locking component and the receiving part, which are designed and configured into, to realize spin locking.The advantages of the utility model, includes locking component and receiving part and is capable of providing axial lock and spin locking, thus no longer need any spin locking in order to obtain for positioning, anti-rotational pin.

Description

Coupling arrangement

Technical field

The utility model is related to a kind of coupling arrangements, more particularly to a kind of that tool retainer is detachably connected to machine The coupling arrangement of (particularly robots arm).

Background technology

For many years, robot has been used to perform welding, riveting and the assembling of parts etc. in the industry repeated Task.

However, in order to increase the type for the task that robot is able to carry out, certain tasks are needed replacing The tool of the end of robots arm.Therefore the dismountable attachment device that can make robot automatic tool exchange is had developed.

There are several requirements for the attachment device of industrial robot.First, this connection is needed in motion state and static The weight of tool can be born under state.Second, tool needs positively to fix about its position for arm, and makes It cannot be changed with this position in the process, otherwise robot cannot complete its work.In addition, this connection must make it possible to Realize automatic tool change.

For a kind of tool changing system from traditionally solving the problems, such as this, one of component is provided with annular form Protrusion hub.The recess portion for being placed with steel ball of several radial direction perforations is provided on ring.Inside ring, slightly conical piston energy Enough axial movements, and it is configured to touch ball and in recess inner diameter to moving ball.

Another component is configured with the cylindrical shaped recess of the diameter roughly the same with hub.Recess arrangement has circumferential slot, works as ball When being squeezed by piston radial, ball is assembled to the circumferential slot.This can cause both parts against each other and be locked to each other.In order to true Appropriate between two components of guarantor to align and also prevent any angular misalignment during use, several positioning pins are installed to one On a component and it is assembled in the hole of another component.

The device referred to has several shortcomings.One shortcoming is ball only with the point contact with hub.During continuous use, this Big contact force can be caused, the permanent deformation of hub, i.e. depression in the surface can be caused, this again and then leads to decline and the lock of accuracy Determine the reduction of power.

It is known to design the rotation locking elements for needing such as locking pin between the two parts, because ball and hub cannot provide Such spin locking.

Utility model content

The purpose of this utility model is to provide a kind of coupling arrangement of the above-mentioned type for the shortcomings that prior art is not presented.

A main aspect according to the present utility model, which is characterized in that a kind of coupling arrangement is used for the first component Second component can be connected to release, the first component includes the locking component that can substantially move radially and can move The actuating member of the locking component, the second component include that the receiving part of the locking component can be received, wherein, During the first component and the second component are combined together and start the actuating member, the locking component quilt Bring the receiving part into so that the first component and the second component axial lock, wherein, the actuating member, institute It states locking component and the receiving part is designed and configured into and to realize spin locking.

Another aspect according to the present utility model, which is characterized in that the locking component is spherical, and the reception Component is recess portion of the configuration in the opening of the second component, it is preferable that the recess arrangement is substantially corresponding to described The hemispherical face of the spherical form of locking component.

Another aspect according to the present utility model, the locking component are configured in the hole radially extended in ring, institute Stating ring has substantially with the opening of the second component corresponding shape, and the actuating member includes configuration in the ring The piston that can be moved axially in portion, when the piston moves axially, the surface of the piston can make the locking component It moves radially.

The actuator surface of the piston preferably includes the hemispherical face on the surface for being substantially corresponding to the locking component.

The utility model has the advantages that locking component and receiving part are capable of providing axial lock and spin locking, therefore not Need again any spin locking in order to obtain for position, anti-rotational pin.

Since locking member is configured to spherical shape, receiving part is configured with hemispherical face, therefore is between them Face contacts rather than point contact, drastically reduces the risk of plastic deformation as a result,.

Further, it since actuating member is also configured with hemispherical face, is also obtained between actuating member and locking member Face contact.

In short, do not need to any further locking member can by two components very securely and it is positively axial and Lock together to direction of rotation.

This respect of the utility model and other aspects and advantage will become aobvious and easy by features as discussed above See.

Description of the drawings

The utility model is described in detail below with reference to attached drawing, wherein,

Fig. 1 be according to the utility model for the complete rotation section of robots arm and the sectional view of coupling arrangement,

Fig. 2 be swivel component and coupling arrangement sectional view,

Fig. 3 is the detailed view of locking ring that the utility model includes,

Fig. 4 is the detailed view of locking ball load bearing component that the utility model includes,

Fig. 5 is the detailed view of lock piston that the utility model includes,

Fig. 6 corresponds to the sectional view of Fig. 2, wherein, two components of coupling arrangement have almost been combined together,

Fig. 7 corresponds to the sectional view of Fig. 2, wherein, two components of coupling arrangement have been locked into together.

Specific embodiment

Coupling arrangement according to the present utility model shown in the drawings includes being intended to be installed to the of the end of robots arm etc. One component 10.The first component is preferably can rotating and therefore tool being enabled to rotate for coupling arrangement, and can pass Pass a part for the swivel of electric power and air.The first component includes substantially cylindric shell 14, and shell 14, which is configured with, to be used for Several through-holes 16 of fixing screws are assembled, fixing screws are used to the first component being tightened to robots arm.Foreboard 18 is also by solid Determine the end that screw is installed to shell.As shown in figure 3, ring 20 is configured at the center of foreboard, and several radial directions are configured in ring Hole 22.Each hole is each equipped with locking component, is in the present embodiment steel ball 24.Foreboard is also configured with the cylinder coaxial with ring Shape through-hole 26.

Actuating member is configured in cylindric through-hole, it can piston 28 in axial sliding.Lead in piston 28 and cylinder Sealing 30 is configured between hole 26.The rear portion of piston 28 is configured with flange 32 outwardly, and the diameter of flange 32 is generally corresponding to In the diameter of the cylindrical shaped recess 34 in shell, and flange 32 is configured with sealing 36.The front end of piston 28 is along its outer peripheral edge It is configured with several spherical recess 38.The quantity and spacing of recess portion correspond to position of the quantity of ball with them in ring.Recess portion Radius is substantially corresponding to the radius of ball.It is also configured with the Part-spherical notch 40 being connect with spherical recess.

As shown in Fig. 2, substantially cylindric component 42 is mounted on inside piston 28.The component 42 is inside the shell from piston 28 Forepart extend into shell and across inner wall 44.Sealing 46 is configured between component 42 and inner wall 44.42 front end of component It is configured with to transmit electric power and the contact component 48 of other media to second component.In the convex of 28/ component of piston, 42 component Spring 50 is further configured between edge 52 and the inner wall 44 of shell.

As shown in figure 5, second component 60 includes the block parts 62 for being configured with several through-holes 64, it is used to assemble in through-hole 64 Bolt by tool to be tightened to second component 60.It is configured in second component 60 with slightly in the side wall 68 of cone Heart circular open 66, the taper of side wall 68 are substantially corresponding to the taper of the outer surface of the ring of the first component.In side wall 68 Through having manufactured several receiving parts, i.e. notch 70, the quantity and spacing of notch 70 correspond to the quantity of ball in the ring of the first component And spacing.The top of notch has hemispherical face, and hemispherical face is transformed into semi-cylindrical face.It is configured with and connects inside central opening Contact portion part 72, contact component 72 include the contact point of center configuration, and the position of contact point and spacing correspond to connecing for the first component Contact portion part.Contact component 72 is held in place by the ring 74 that the lower part of central opening is fitted by pressure.

Device according to the present utility model is intended to work as follows.When the first component 10 and second component 60 each other During connection, by by the pressure medium of such as air via pipeline (not shown) be supplied to foreboard 18 rear surface and piston it is convex Space 34 between edge 32, piston 28 overcome the power of spring to return in shell.Then, ball 24 is freely moved into piston In hemispherical concave depressions.The end of robots arm is positioned such that the first component can be docked on second component, wherein contacting Component 48 and 72 is aligned with each other.The ball 24 of the first component is also directed at the recess portion 70 of second component.When the ring 20 of the first component enters During the circular open 66 of second component 60, as shown in fig. 6, ball 24 is moved freely into radial hole and by the side of opening 66 Edge.Contact component 48 and 72, which starts to be in contact with each other and is positioned to component, to be abut against each other.This can cause pressure medium from space 34 It removes, since the power of spring 50 and the pressure medium in the space entered between the upper surface of flange 32 and inner wall 44 force piston 28 It is moved downwardly together with cylindrical structural member 42, as shown in Figure 7.Due to the hemispheric recess portion 38 of piston, the movement of piston forces Ball is moved radially outward and enters the semi-spherical portion on the top of the recess portion 70 of second component.When piston reaches its extreme lower position, Ball is placed in hemispherical indentation 40.Contact component is combined together completely now.The axial position of notch 40, the axis of radial hole Relationship between the axial position of position and the semi-spherical portion on the top of recess portion 70 causes ball to apply latching force, and the latching force is by two A first component and second component are pressed firmly against each other.Even if spring 50 is further ensured when pressure medium fails, Two components also remain locked together.

Due to the ball seat on ball and hemispherical indentation and the respective recess portion of the first component and second component, two components exist Axial direction and rotation direction all form from one another lock.Due to semi-spherical shape, the contact area that ball obtains is contact surface rather than contact Point.

In order to which two components are mutually removed, sequence is just opposite.

Embodiment according to figure 1, device according to the present utility model are further designed to have to transmit electricity The device 300 of power, device 300 are connected to the installing plate 302 for installation into robots arm's (not shown).

It should be appreciated that the utility model is not limited to the above embodiment and attached drawing, and can be in the scope of the claims Inside modify.

Claims (6)

1. a kind of coupling arrangement is used to the first component being connected to second component with discharging,

It is characterized in that,

The first component includes the locking component that can be moved radially and the actuating member that can move the locking component,

The second component includes that the receiving part of the locking component can be received,

Wherein, during being combined together the first component and the second component and starting the actuating member, institute It states locking component and is entrained into the receiving part so that the first component and the second component axial lock, wherein, it is described Actuating member, the locking component and the receiving part, which are designed and configured into, to realize spin locking.

2. coupling arrangement according to claim 1, which is characterized in that the locking component described is connect to be spherical It is recess portion of the configuration in the opening of the second component to receive component.

3. coupling arrangement according to claim 2, which is characterized in that the recess arrangement has corresponding to the locking component Spherical form hemispherical face.

4. the coupling arrangement according to Claims 2 or 3, which is characterized in that the radial direction in ring is configured in the locking component In the hole of extension, the ring has shape corresponding with the opening of the second component.

5. coupling arrangement according to claim 4, which is characterized in that the actuating member includes configuration in the ring The piston that can be moved axially in portion, when the piston moves axially, the surface of the piston can make the locking component It moves radially.

6. coupling arrangement according to claim 5, which is characterized in that the actuator surface of the piston includes corresponding to the lock Determine the hemispherical face on the surface of component.