A kind of frock of thin-walled ringTechnical field
This utility model belongs to thin-walled ring frock clamp field, more particularly, to a kind of frock of thin-walled ring.
Background technology
As thin-walled ring poor rigidity, intensity are weak, therefore easily it is deformed in the presence of chuck force, increases partForm error, and then part quality cannot ensure.If directly clamped with the claw of scroll chuck, can be in the effect of chuck forceUnder slightly become deformation, what is obtained during car hole is cylindrical hole, but when unclamp claw, after removing part, due to elastic deformation it is extensiveIt is multiple, it is cylindrical to revert to cylinder, and endoporus then becomes rib circle.
During processing circular thin-wall pipe fitting, if pipe fitting is longer, retaining part is too short, then clamp not strongly and lean on.
The content of the invention
In view of this, this utility model is directed to a kind of frock of thin-walled ring, to solve to receive when thin-walled ring is processedPower is yielding, clamps not strongly the technical problem leaned on.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
A kind of frock of thin-walled ring, including some groups of annular claw groups, the claw group include some radius identicalsFan-shaped claw, fan-shaped dog rings shape are discontinuously arranged, and are connected by retractor device, in the claw group at two ends between adjacent claw groupOne of outer end fixed mount is installed.
Further, the retractor device includes some expansion links, and the expansion link includes mobile jib and secondary bar, and mobile jib isHollow tubular structures, are provided with some radial direction through hole being equally spaced on mobile jib, one end of secondary bar is provided with and radial direction through hole phaseThe radial elastic device of cooperation, secondary bar be provided with elastic device one end insertion mobile jib inside, on mobile jib away from secondary bar one endIt is connected with the end face of fan-shaped claw, connects with the end face of the fan-shaped claw of another claw group away from one end of mobile jib in secondary barConnect, elastic device is stuck at radial direction through hole, pressure is applied to elastic component, when elastic component is not stopped by radial direction through hole, secondary bar existsMove in mobile jib.
Further, the quantity of the expansion link is three.
Further, the fan-shaped claw is provided with pressure transducer on the medial wall of workpiece, pressure transducer withController connects, and pressure transducer is used for the clamping force for detecting claw, prevents pressure excessive.
Further, the quantity of the fan-shaped claw is three.
Further, the quantity of the claw group is two.
Further, a fixed mount is connected with each described fan-shaped claw.
Relative to prior art, a kind of frock of thin-walled ring described in the utility model has the advantage that：
(1) due to the special construction of thin-walled ring, cause to be easily deformed when radial pressure that thin-walled ring is subject to is excessive, thisUtility model increased the contact area with thin-walled ring, the pressure for having disperseed thin-walled ring to be subject to, and not easily cause deformation, addPressure transducer, controls the clamping force to thin-walled ring, when the pressure to thin-walled ring is between 0.5-0.6bar, can protectThe rough turn circularity ＜ 0.02mm of card thin-walled ring；
(2) structure that claw group is arranged to adjust by this utility model, can be adjusted according to different tubular lengthsThe length of expansion link, while playing support to thin-walled ring, clamps more reliable.
Description of the drawings
The accompanying drawing for constituting a part of the present utility model is used for providing further understanding to of the present utility model, and this practicality is newThe schematic description and description of type is used to explain this utility model, does not constitute to improper restriction of the present utility model.In accompanying drawing：
Fig. 1 is the structural representation described in this utility model embodiment.
Description of reference numerals：
1- claw groups；11- sector claws；2- expansion links；21- mobile jibs；211- radial direction through hole；22- secondary bars；221- elasticity dressesPut；3- pressure transducers；4- fixed mounts.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in this utility model canTo be mutually combined.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " on ", D score,The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward " isBased on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, rather than indicateOr the device or element of hint indication with specific orientation, with specific azimuth configuration and operation, therefore must not be understood thatIt is to restriction of the present utility model.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicatingOr hint relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are definedFeature can express or implicitly include one or more this feature.In description of the present utility model, unless separatelyIt is described, " multiple " are meant that two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peaceDress ", " being connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedlyConnection；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary,It can be the connection of two element internals.For the ordinary skill in the art, can be by concrete condition understandingState concrete meaning of the term in this utility model.
Below with reference to the accompanying drawings and in conjunction with the embodiments describing this utility model in detail.
As shown in figure 1, a kind of frock of thin-walled ring, including two groups of annular claw groups 1, claw group 1 includes three sizesThe fan-shaped claw 11 of structure all same, 11 annular of fan-shaped claw are discontinuously arranged and are wrapped on workpiece, are led between adjacent claw group 1Retractor device connection is crossed, the one of outer end in the claw group 1 at two ends is provided with fixed mount 4, on each fan-shaped claw 11A fixed mount 4 is connected with, fixed mount 4 is used for and lathe connects.
Retractor device includes three telescopic expansion links 2, and expansion link 2 includes mobile jib 21 and secondary bar 22, and mobile jib 21 is skyTubular structures, are provided with some radial direction through hole being equally spaced on mobile jib 21, one end of secondary bar 22 is provided with and radial direction through holeThe radial elastic device 221 being engaged, secondary bar 22 are provided with inside one end insertion mobile jib 21 of elastic device 221, on mobile jib 21Be connected with the end face of fan-shaped claw 11 away from one end of secondary bar 22, in secondary bar 22 away from mobile jib 21 one end and another clawThe end face connection of the fan-shaped claw 11 of group 1, elastic device 221 are stuck at radial direction through hole, apply pressure to elastic component, work as elastic componentWhen not stopped by radial direction through hole, secondary bar 22 is moved in mobile jib 21, can adjustable telescopic rod 2 as needed length.Fan-deck cardPawl 11 is provided with pressure transducer 3 on the medial wall of workpiece, and pressure transducer 3 is connected with controller, and pressure transducer 3 is examinedThe pressure surveyed between fan-shaped claw 11 and workpiece, it is to avoid the excessive deformation for causing thin-walled ring of pressure.
Operation principle of the present utility model：
The length of adjustable telescopic rod 2, thin-walled ring is placed in claw group 1 as needed, is adjusted fan-shaped claw 11, is madeObtain fan-shaped claw 11 to clamp thin-walled ring, by the data for detecting pressure transducer 3, it is to avoid the clamping force mistake of fan-shaped claw 11Greatly, cause the deformation of thin-walled ring.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit this utility model, all at thisWithin the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in this utility modelProtection domain within.