CN219504615U - Tensioning positioning mechanism - Google Patents

Abstract

The utility model discloses a tensioning and positioning mechanism, and relates to the technical field of automatic tensioning and positioning. The tensioning and positioning mechanism is used for positioning a plurality of annular workpieces. The tensioning positioning mechanism comprises a linkage assembly and a tensioning assembly, the linkage assembly comprises a power shaft and a plurality of positioning disks, the positioning disks are arranged on the periphery of the power shaft, and one end of the automatic power shaft is arranged at intervals along the axis direction of the power shaft. A plurality of annular workpieces are sleeved on the peripheries of the plurality of tensioning assemblies, the power shaft moves along the axis direction, and the plurality of positioning disks can drive the plurality of tensioning assemblies to simultaneously and outwards tension in a one-to-one correspondence manner so as to clamp the plurality of annular workpieces. The power shaft of the tensioning positioning mechanism moves along the axis direction, so that a plurality of annular workpieces can be simultaneously positioned and clamped, the operation is simple, the diameter difference of different positions of inner holes of the plurality of annular workpieces can be compatible, and the positioning precision of the plurality of annular workpieces is improved.

Description

Tensioning positioning mechanism

Technical Field

The utility model relates to the technical field of automatic tensioning and positioning, in particular to a tensioning and positioning mechanism.

Background

With the development and perfection of automation equipment, clamping mechanisms are widely applied to the automation equipment, and aiming at annular workpieces with non-clamping outer diameters, the function of accurately positioning the annular workpieces is mainly achieved by using clamping mechanisms for clamping inner holes at present.

The existing clamping mechanism for clamping the inner hole has the problems that the positioning difficulty of a plurality of annular disc parts is high, the concentricity is poor, the positioning precision is low and the like.

Disclosure of Invention

The utility model aims to provide a tensioning positioning mechanism which can facilitate clamping and positioning of a plurality of annular workpieces and has high positioning precision.

To achieve the purpose, the utility model adopts the following technical scheme:

the tight positioning mechanism that rises for a plurality of cyclic annular work pieces of location includes:

the linkage assembly comprises a power shaft and a plurality of positioning disks, wherein the positioning disks are arranged on the periphery of the power shaft and are arranged at intervals along the axial direction of the power shaft from one end of the power shaft;

the device comprises a plurality of annular workpieces, a plurality of positioning disks, a tensioning assembly and a power shaft, wherein the plurality of annular workpieces are sleeved on the periphery of the tensioning assembly, the power shaft moves along the axis direction, and the plurality of positioning disks can correspondingly drive the plurality of tensioning assemblies to simultaneously and outwards tighten so as to clamp the plurality of annular workpieces.

As an alternative scheme of tight positioning mechanism rises, the linkage subassembly still includes elastic drive spare and guide bar, the guide bar is followed the circumference equipartition of positioning disk has a plurality ofly, the guide bar is followed the axis direction of power shaft extends, and runs through a plurality of the positioning disk, elastic drive spare cover is located the guide bar is located the below of positioning disk and with tight subassembly butt rises, the positioning disk is followed the power shaft is followed the axis direction and is removed, compression elastic drive spare, elastic drive spare drive tight subassembly outwards rises.

As an alternative scheme of the tensioning positioning mechanism, the tensioning assembly comprises a floating core and a spring sleeve, the floating core and the spring sleeve are sequentially sleeved on the periphery of the power shaft, the guide rod penetrates through the floating core, and the elastic driving piece is abutted with the floating core; the cooperation surface of floating core with the spring housing is the conical surface, the positioning disk is followed the axis direction motion of power shaft compresses elastic drive spare, elastic drive spare drives the floating core is followed the axis direction motion, the conical surface drive spring housing outwards rises tightly and presss from both sides the cyclic annular work piece.

As an alternative scheme of the tensioning positioning mechanism, the tensioning assembly further comprises an anti-rotation pin, the anti-rotation pin is arranged in the circumferential direction of the floating core, a sliding groove is formed in the circumferential direction of the spring sleeve along the axial direction of the power shaft, and the anti-rotation pin is matched with the sliding groove and used for limiting the spring sleeve to rotate.

As an alternative scheme of the tensioning positioning mechanism, the elastic driving piece comprises a plurality of belleville springs, the belleville springs are in one group, and the inner edges or the outer edges of two adjacent groups of belleville springs are connected.

As an alternative scheme of the tensioning positioning mechanism, the tensioning positioning mechanism further comprises a fixing seat, and the fixing seat is positioned at one side of the tensioning assemblies; the fixing seat comprises a first sleeve and a fixing plate, the first sleeve is sleeved on the periphery of the power shaft, one end of the first sleeve is abutted to the tensioning assembly, the other end of the first sleeve is connected with the fixing plate, and the fixing plate is connected with the workbench.

As an alternative scheme of the tensioning positioning mechanism, the power shaft comprises a second sleeve and a fixed rod, the fixed rod is arranged in the second sleeve, one end of the fixed rod is connected with a fixed pressure head, and the fixed pressure head is arranged at one end of the power shaft; the other end of the fixed rod is connected with the limiting plate, the limiting plate is connected with the fixed plate, the second sleeve is provided with a limiting channel along the axis direction, the second sleeve moves along the axis direction of the fixed rod, and the limiting plate is matched with the limiting channel to limit the power shaft to rotate.

As an alternative scheme of the tensioning positioning mechanism, a fixed pin sleeve and a first connecting hole are formed in the fixed plate, a positioning pin and a first threaded hole are formed in the workbench, the fixed pin sleeve is matched with the positioning pin to position the fixed plate, and a quick-release screw penetrates through the first connecting hole to be in threaded connection with the first threaded hole so as to connect the fixed plate with the workbench.

As an alternative scheme of the tensioning positioning mechanism, the tensioning positioning mechanism further comprises a driving assembly, the second sleeve penetrates through the fixing plate to be connected with the driving assembly, and the driving assembly is used for driving the second sleeve to move along the axis direction of the power shaft.

As an alternative scheme of the tensioning positioning mechanism, the tensioning positioning mechanism further comprises a quick-connection assembly, the quick-connection assembly comprises a fixed joint and a quick-change pull pin, the driving end of the driving assembly is connected with the fixed joint, and the second sleeve is connected with the fixed joint through the quick-change pull pin.

The utility model has the beneficial effects that:

the utility model provides a tensioning and positioning mechanism which comprises a linkage assembly and a tensioning assembly, wherein the linkage assembly comprises a power shaft and a plurality of positioning disks, and one ends of the positioning disks are arranged at intervals along the axis direction of the power shaft. A plurality of annular workpieces are sleeved on the peripheries of the plurality of tensioning assemblies, the power shaft moves along the axis direction, and the plurality of positioning disks can drive the plurality of tensioning assemblies to simultaneously and outwards tension in a one-to-one correspondence manner so as to clamp the plurality of annular workpieces. The power shaft of the tensioning and positioning mechanism moves along the axis direction, so that a plurality of annular workpieces can be simultaneously positioned and clamped, and the operation is simple; and the diameter difference of different positions of inner holes of a plurality of annular workpieces can be compatible, and the positioning precision of the plurality of annular workpieces is improved.

Drawings

FIG. 1 is a schematic view of a tensioning and positioning mechanism according to an embodiment of the present utility model;

FIG. 2 is a front view of a tensioning and positioning mechanism provided by an embodiment of the present utility model;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a side view of a tensioning and positioning mechanism provided by an embodiment of the present utility model.

In the figure:

100. an annular workpiece;

1. a linkage assembly; 2. a tensioning assembly; 3. a fixing seat; 4. quick-release screws; 5. a drive assembly; 6. a quick-connect assembly;

11. a power shaft; 12. a positioning plate; 13. an elastic driving member; 14. a guide rod; 21. a floating core; 22. a spring sleeve; 23. an anti-rotation pin; 31. a first sleeve; 32. a fixing plate; 61. fixing the joint; 62. quick-change pull pins;

111. a second sleeve; 112. a fixed rod; 113. fixing a pressure head; 221. a slot is formed; 321. a fixed pin sleeve; 611. a second connection hole;

1111. a second pin hole; 1112. a limiting channel; 1121. and a limiting plate.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, either fixed or removable; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1-4, the present embodiment provides a tensioning positioning mechanism for positioning a plurality of annular workpieces 100. The tensioning and positioning mechanism comprises a linkage assembly 1 and a tensioning assembly 2, the linkage assembly 1 comprises a power shaft 11 and a plurality of positioning disks 12, the positioning disks 12 are arranged on the periphery of the power shaft 11, and one end of the power shaft 11 is arranged at intervals along the axis direction of the power shaft 11. A tensioning assembly 2 is arranged between two adjacent positioning disks 12, a plurality of annular workpieces 100 are sleeved on the peripheries of the tensioning assemblies 2, a power shaft 11 moves along the axis direction, and the positioning disks 12 can drive the tensioning assemblies 2 to simultaneously and outwards tension in a one-to-one correspondence mode so as to clamp the annular workpieces 100. The tensioning and positioning mechanism can simultaneously position and clamp a plurality of annular workpieces 100 by only driving the power shaft 11 to move along the axial direction, and is simple to operate.

Since the sizes of the inner holes are different within the tolerance range in mass production of the annular workpieces 100, there is a positional deviation when positioning and clamping the inner holes of the plurality of annular workpieces 100 after the plurality of annular workpieces 100 are stacked in the axial direction. When the tensioning positioning mechanism provided by the embodiment positions the plurality of annular workpieces 100 through the inner holes of the plurality of annular workpieces 100, the plurality of tensioning assemblies 2 arranged along the axial direction of the power shaft 11 respectively position and clamp the inner holes of the plurality of annular workpieces 100 along different positions in the axial direction, and when the power shaft 11 moves along the axial direction, each positioning disk 12 can drive the plurality of tensioning assemblies 2 in a one-to-one correspondence manner to simultaneously tension outwards, the different positions of the inner holes of the plurality of annular workpieces 100 are tensioned through the different tensioning assemblies 2, and the diameter difference of the different positions of the inner holes of the plurality of annular workpieces 100 can be compatible, so that the positioning precision of the plurality of annular workpieces 100 is improved.

As an alternative scheme of the tensioning positioning mechanism, the linkage assembly 1 further comprises an elastic driving piece 13 and a guide rod 14, the guide rod 14 is uniformly distributed in a plurality of positions along the circumferential direction of the positioning disc 12, the guide rod 14 extends along the axial direction of the power shaft 11 and penetrates through the positioning discs 12, the elastic driving piece 13 is sleeved on the guide rod 14, is positioned below the positioning disc 12 and is abutted to the tensioning assembly 2, the positioning disc 12 moves along the axial direction of the power shaft 11 along with the power shaft 11, the elastic driving piece 13 is compressed, and the elastic driving piece 13 drives the tensioning assembly 2 to outwards tension. The elastic driving piece 13 is guided by the guide rod 14, so that the elastic driving piece 13 cannot deviate when being stressed, and the positioning precision of the tensioning positioning mechanism is improved.

The elastic driving piece 13 below each positioning disk 12 drives the corresponding tensioning assembly 2, so that the difference of different positions of the inner holes of the plurality of annular workpieces 100 in a set range, the batch of the plurality of annular workpieces 100 with the same inner hole diameter and the plurality of annular workpieces 100 with different numbers can be compatible, the tensioning positioning mechanism does not need to be replaced, and the universality is better.

In this embodiment, three guide rods 14 are uniformly distributed in the circumferential direction of the positioning disc 12, and each guide rod 14 is provided with a plurality of elastic driving members 13, where the plurality of elastic driving members 13 are disposed below the plurality of positioning discs 12 in a one-to-one correspondence. For the tensioning assembly 2 between two adjacent positioning disks 12, the positioning disks 12 positioned above simultaneously compress the three elastic driving pieces 13, and the three elastic driving pieces 13 simultaneously drive the tensioning assembly 2 positioned between two adjacent positioning disks 12 to be tensioned outwards, so that the clamping stability of a plurality of annular workpieces 100 is ensured.

Three first through holes are formed in each positioning plate 12, three guide rods 14 sequentially penetrate through the first through holes in the positioning plates 12 and the elastic driving piece 13, second threaded holes are formed in one ends of the guide rods 14, the guide rods 14 are connected with the second threaded holes in a threaded mode through screws, and when the guide rods 14 are dismounted, the guide rods 14 can be conveniently pulled out of the first through holes in the uppermost positioning plates 12.

As an alternative to the tensioning positioning mechanism, the elastic driving member 13 includes a plurality of belleville springs, and N belleville springs are grouped into one group, and the inner edges or the outer edges of two adjacent groups of belleville springs are connected. The belleville springs are in a conical disk shape, the belleville springs are divided into M groups, N belleville springs of each group are connected in series to increase the driving force of the elastic driving piece 13, the inner edges of the belleville springs of two adjacent groups are connected or the outer edges of the belleville springs are abutted, static or dynamic loads along the axial direction are born at the inner edges and the outer edges of the belleville springs, and the belleville springs are deformed after being compressed until being flattened. The belleville spring has not only the effort along the axial direction of power shaft 11 when compressed, but also radial effort when flattening, and the elastic drive piece 13 is compressed the back, and the tensioning assembly 2 receives not only the effort of axial direction, receives radial effort moreover, can clamp annular work piece 100 better.

As an alternative scheme of the tensioning positioning mechanism, the tensioning assembly 2 comprises a floating core 21 and a spring sleeve 22, the floating core 21 and the spring sleeve 22 are sequentially sleeved on the periphery of the power shaft 11, the guide rod 14 penetrates through the floating core 21, and the elastic driving piece 13 is abutted to the floating core 21; the matching surface of the floating core 21 and the spring sleeve 22 is a conical surface, the positioning disk 12 moves along the axial direction of the power shaft 11 to compress the elastic driving piece 13, the elastic driving piece 13 drives the floating core 21 to move along the axial direction, and the conical surface drives the spring sleeve 22 to outwards expand and clamp the annular workpiece 100. When the power shaft 11 moves along the axial direction, the positioning disk 12 compresses the elastic driving piece 13, the elastic driving piece 13 drives the floating core 21 to move along the axial direction, the conical surface of the floating core 21 drives the spring sleeve 22 to expand outwards, and meanwhile the spring sleeve 22 is subjected to radial acting force of the elastic driving piece 13, so that the clamping stability of the annular workpiece 100 is ensured.

Three mounting holes are formed in the circumference of the floating core 21, the mounting holes are stepped holes and comprise holes with larger diameters and holes with smaller diameters, three elastic driving pieces 13 are respectively mounted in the holes with larger diameters of the three mounting holes, the elastic driving pieces 13 are abutted to or fixedly connected with steps of the stepped holes, and the guide rods 14 penetrate through the holes with smaller diameters.

In order to facilitate the assembly of the floating core 21 with the elastic driving member 13 and the power shaft 11, the floating core 21 is provided with two semi-annular structures, wherein a first butt joint part is arranged in the circumferential direction of one semi-annular structure, a second butt joint part is arranged in the circumferential direction of the other semi-annular structure, the first butt joint part and the second butt joint part are matched to form an annular floating core 21, and then the annular floating core 21 is fixed through a fastening screw which penetrates through a second threaded hole on the other semi-annular structure from the periphery of one semi-annular structure to be in threaded connection with the second threaded hole on the other semi-annular structure.

The spring housing 22 is sleeved on the periphery of the floating core 21, a plurality of expansion grooves 221 are uniformly formed in the peripheral surface of the spring housing 22 along the circumferential direction, round holes are formed in one ends of the expansion grooves 221, the other ends of the expansion grooves 221 extend to the end face of the spring housing 22 along the axial direction, and the positions of the ends of the round holes of the two adjacent expansion grooves 221 are opposite to each other, so that the consistency of expansion of all positions of the circumference when the spring housing 22 is stressed to be expanded outwards is ensured.

If the diameter of the conical surface of the floating core 21 matched with the spring sleeve 22 is gradually reduced from top to bottom, the tensioning assembly 2 is outwards tensioned to clamp the plurality of annular workpieces 100 when the power shaft 11 of the tensioning positioning mechanism moves downwards. If the diameter of the conical surface of the floating core 21 matched with the spring sleeve 22 gradually increases from top to bottom, the tensioning assembly 2 is tensioned outwards to clamp the plurality of annular workpieces 100 when the power shaft 11 of the tensioning positioning mechanism moves upwards. In this embodiment, the diameter of the conical surface of the floating core 21 and the spring housing 22 is gradually reduced from top to bottom.

As an alternative of the tensioning positioning mechanism, the tensioning assembly 2 further comprises an anti-rotation pin 23, the anti-rotation pin 23 is arranged in the circumferential direction of the floating core 21, a sliding groove is formed in the circumferential direction of the spring sleeve 22 along the axial direction of the power shaft 11, and the anti-rotation pin 23 is matched with the sliding groove and used for limiting the rotation of the spring sleeve 22. The axis of the anti-rotation pin 23 is perpendicular to the axis of the power shaft 11, and in order to prevent the spring housing 22 from moving along the axis direction of the power shaft 11 under the action of the floating core 21, the rotation of the spring housing 22 is restricted by the cooperation of the anti-rotation pin 23 fixed to the circumference of the floating core 21 and the chute of the spring housing 22. The floating core 21 can move along the axial direction relative to the spring sleeve 22 under the action of the elastic driving piece 13, and the spring sleeve 22 can only be outwards tensioned under the action of the floating core 21 and cannot rotate. By calculating the driving force of the elastic driving member 13 and the tension force required by the plurality of annular workpieces 100, the tension positioning mechanism is precisely designed, and the positioning accuracy of the tension positioning mechanism is improved.

In this embodiment, the sliding groove is one of the expansion grooves 221 in the circumferential direction of the spring housing 22.

When the linkage assembly 1 and the tensioning assembly 2 are assembled, the elastic driving piece 13 is firstly installed in a hole with a larger diameter of the installation hole of the floating core 21, the floating core 21 is installed between two adjacent positioning disks 12, two semi-annular structures are respectively arranged on two sides of the power shaft 11 in a surrounding mode in the circumferential direction of the power shaft 11, the first butt joint part and the second butt joint part are in butt joint, then the two semi-annular structures are fixed through fastening screws to form the floating core 21, and then the spring sleeve 22 is sleeved on the periphery of the floating core 21. According to the above method, a plurality of tensioning assemblies 2 are sequentially installed between two adjacent positioning disks 12, after the tensioning assemblies 2 are installed, the guide rod 14 passes through the elastic driving member 13 and the hole with smaller diameter from the first through hole of the positioning disk 12 positioned at the uppermost position, then passes through the hole with smaller diameter of the first through hole of the next positioning disk 12, the hole with smaller diameter of the mounting hole of the next elastic driving member 13 and the mounting hole of the next floating core 21 sequentially until passing through the hole with smaller diameter of the mounting hole of the last positioning disk 12, the hole with smaller diameter of the mounting hole of the last elastic driving member 13 and the last floating core 21. During the downward movement of the power shaft 11, the positioning disk 12 slides relative to the guide bar 14.

As an alternative scheme of the tensioning positioning mechanism, the tensioning positioning mechanism further comprises a fixing seat 3, and the fixing seat 3 is positioned on one side of the tensioning assemblies 2; the fixing base 3 includes first sleeve 31 and fixed plate 32, and the periphery of power shaft 11 is located to first sleeve 31 cover, and the one end and the tight subassembly 2 butt that rises of first sleeve 31, the other end are connected with fixed plate 32, and fixed plate 32 is connected with the workstation. In this embodiment, the fixing base 3 is located below the plurality of tensioning assemblies 2, and supports the lowermost tensioning assembly 2 through the first sleeve 31. The tensioning and fixing mechanism is connected to a workbench through a fixing plate 32, and the workbench is used for supporting the tensioning and positioning mechanism.

In order to realize the quick connection of the tensioning positioning mechanism and the workbench, a fixed pin sleeve 321 and a first connecting hole are arranged on the fixed plate 32, a positioning pin and a first threaded hole are arranged on the workbench, the fixed pin sleeve 321 is matched with the positioning pin to position the fixed plate 32, and a quick-release screw 4 passes through the first connecting hole and is in threaded connection with the first threaded hole so as to connect the fixed plate 32 with the workbench. The fixing plate 32 is rectangular, second through holes are formed in four corners of the rectangular fixing plate 32 and two corners located on one diagonal line, and the fixing pin sleeve 321 is fixed in the second through holes; the first connecting holes are arranged at two corners on the other diagonal line. When the tensioning positioning mechanism is installed, the fixing pin sleeve 321 and the positioning pin are matched to position the fixing plate 32, and then the quick-release screw 4 passes through the first connecting hole to be in threaded connection with the first threaded hole, so that the tensioning positioning mechanism and the workbench are quickly connected. When the tensioning positioning mechanism is disassembled, the tensioning positioning mechanism can be disassembled only by unscrewing the quick-release screw 4.

As an alternative scheme of the tensioning positioning mechanism, the power shaft 11 comprises a second sleeve 111 and a fixed rod 112, the fixed rod 112 is arranged in the second sleeve 111, one end of the fixed rod 112 is connected with a fixed pressure head 113, and the fixed pressure head 113 is arranged at one end of the power shaft 11; the other end of the fixed rod 112 is connected with a limiting plate 1121, the limiting plate 1121 is connected with the fixed plate 32, the second sleeve 111 is provided with a limiting channel 1112 along the axial direction, the second sleeve 111 moves along the axial direction of the fixed rod 112, and the limiting plate 1121 is matched with the limiting channel 1112 to limit the rotation of the power shaft 11.

The fixing press head 113 includes a limiting portion and a connecting portion, the diameter of the limiting portion is larger than the diameter of the connecting portion and larger than the outer diameter of the positioning disk 12, the connecting portion is connected with the fixing rod 112 through a fastening screw, the fixing rod 112 is fixed on the fixing plate 32 through the limiting plate 1121, and the fixing press head 113 limits the second sleeve 111 to move upwards. The length of the limiting channel 1112 in the axial direction is the maximum displacement of the power shaft 11 moving in the axial direction, and the width of the limiting plate 1121 is adapted to the width of the limiting channel 1112 to limit the rotation of the second sleeve 111, thereby limiting the rotation of the power shaft 11.

In this embodiment, the outer circumference of the second sleeve 111 is configured to be stepped, the outer diameter of the end of the second sleeve 111 near the fixing seat 3 is greater than the outer diameter of the end far away from the fixing seat 3, a plurality of positioning disks 12 are disposed at intervals on the outer circumference of the end of the second sleeve 111 far away from the fixing seat 3, a plurality of tensioning assemblies 2 are sleeved on the end of the second sleeve 111 far away from the fixing seat 3, a first sleeve 31 is sleeved on the end of the second sleeve 111 near the fixing seat 3, and the step of the outer circumference of the second sleeve 111 and the first sleeve 31 support the lowermost tensioning assembly 2 together. The stopper and the step of the second sleeve 111 restrict the movement of the guide rod 112 in the axial direction.

As an alternative to the tensioning positioning mechanism, the tensioning positioning mechanism further comprises a driving assembly 5, the second sleeve 111 is connected to the driving assembly 5 through the fixing plate 32, and the driving assembly 5 is used for driving the second sleeve 111 to move along the axial direction of the power shaft 11. A third through hole is formed in the center of the fixing plate 32, the second sleeve 111 penetrates through the third through hole and is connected with the driving assembly 5, the driving assembly 5 is an air cylinder, the air cylinder drives the second sleeve 111 to move downwards, the positioning disc 12 can compress the elastic driving piece 13, the elastic driving piece 13 drives the floating core 21 to move downwards, and the spring sleeve 22 outwards tightens the annular workpiece under the action of the conical surface of the floating core 21.

As an alternative to the tensioning positioning mechanism, the tensioning positioning mechanism further comprises a quick-connection assembly 6, the quick-connection assembly 6 comprises a fixed connector 61 and a quick-change pull pin 62, the driving end of the driving assembly 5 is connected with the fixed connector 61, and the second sleeve 111 is connected with the fixed connector 61 through the quick-change pull pin 62. The fixed joint 61 is provided with second connecting hole 611 and first pinhole with the one end that second sleeve 111 is connected, and the axis of second connecting hole 611 coincides with the axis of second sleeve 111, and first pinhole and second connecting hole 611 intercommunication, and the axis of first pinhole is perpendicular to the axis of second connecting hole 611, is equipped with second pinhole 1111 on the second sleeve 111, and the axis of second pinhole 1111 is perpendicular with the axis of second sleeve 111, and after second sleeve 111 inserted second connecting hole 611, quick change draw pin 62 inserts from the one end of first pinhole, after passing second pinhole 1111, wears out from the other end of first pinhole. One end of the quick-change pull pin 62 is provided with a pull pin head, the other end is provided with an elastic pressure head, the elastic pressure head is compressed after entering the first pin hole and the second pin hole 1111, and after penetrating out of the other end of the first pin hole, the elastic pressure head pops out to limit the quick-change pull pin 62 to deviate from the first pin hole and the second pin hole 1111, so that the quick connection between the second sleeve 111 and the fixed joint 61 is realized. When the second sleeve 111 is removed, an external force is applied to the pin head, and the elastic pressing head is compressed, so that the quick change pin 62 can be taken out of the first and second pin holes 1111 to remove the second sleeve 111 from the fixed joint 61.

The utility model also provides a positioning method of a plurality of annular workpieces, which is applied to the tensioning positioning mechanism and comprises the following steps:

s10, sleeving the plurality of annular workpieces 100 on the outer circumferences of the plurality of tensioning assemblies 2.

When the plurality of annular workpieces 100 are positioned, the fixed pin sleeve 321 on the fixed plate 32 is matched with the positioning pin on the workbench, so that the positioning of the tensioning positioning mechanism on the workbench is realized. And then the quick-release screw 4 passes through the first connecting hole to be in threaded connection with a first threaded hole on the workbench, and the tensioning positioning mechanism is fixed on the workbench. The second sleeve 111 is then inserted into the second connection hole 611 and the second pin hole 1111 is aligned with the first pin hole, the quick change pull pin 62 is inserted from one end of the first pin hole, passes through the second pin hole 1111 and out of the other end of the first pin hole, and the elastic pressure head of the quick change pull pin 62 is ejected to connect the second sleeve 111 with the fixed joint 61, thereby achieving connection of the power shaft 11 with the driving assembly 5. Finally, the plurality of annular workpieces 100 are sleeved on the periphery of the plurality of tensioning assemblies 2.

And S20, driving the power shaft 11 to move along the axial direction, and driving the plurality of tensioning assemblies 2 to simultaneously and outwards tension in a one-to-one correspondence manner by the plurality of positioning disks 12 so as to clamp the plurality of annular workpieces 100.

The driving assembly 5 drives the power shaft 11 to move downwards, the positioning disk 12 compresses the elastic driving piece 13 positioned below the positioning disk, the elastic driving piece 13 drives the floating core 21 to move downwards, and the conical surface of the floating core 21 drives the spring sleeve 22 to expand outwards so as to clamp the annular workpiece 100. The plurality of tensioning members 2 drive the annular workpieces 100 provided on the outer circumferences thereof, respectively, and clamp the plurality of annular workpieces 100 simultaneously.

The positioning method for the plurality of annular workpieces 100 provided in the embodiment can be used for positioning and clamping the plurality of annular workpieces 100 with different positions of the inner holes, the plurality of batch annular workpieces 100 with the same inner hole diameter and the plurality of annular workpieces 100 with different numbers by applying the tensioning positioning mechanism; and the operation is simple, and the positioning accuracy of the plurality of annular workpieces 100 is improved.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims (10)

1. The tight positioning mechanism that rises for a plurality of cyclic annular work pieces (100) of location, its characterized in that includes:

the linkage assembly (1) comprises a power shaft (11) and a plurality of positioning disks (12), wherein the positioning disks (12) are arranged on the periphery of the power shaft (11) and are arranged at intervals along the axis direction of the power shaft (11) from one end of the power shaft (11);

the device comprises a tensioning assembly (2), wherein a plurality of annular workpieces (100) are sleeved on the peripheries of the tensioning assemblies (2), a power shaft (11) moves along the axis direction, and the plurality of positioning disks (12) can drive the plurality of tensioning assemblies (2) to simultaneously and outwards tension in a one-to-one correspondence manner so as to clamp the plurality of annular workpieces (100), and the tensioning assemblies (2) are arranged between two adjacent positioning disks (12).

2. The tensioning positioning mechanism according to claim 1, wherein the linkage assembly (1) further comprises an elastic driving piece (13) and a guide rod (14), the guide rod (14) is uniformly distributed with a plurality of guide rods along the circumference of the positioning disc (12), the guide rods (14) extend along the axis direction of the power shaft (11) and penetrate through a plurality of the positioning discs (12), the elastic driving piece (13) is sleeved on the guide rod (14), is located below the positioning disc (12) and is abutted to the tensioning assembly (2), the positioning disc (12) moves along the axis direction along with the power shaft (11) to compress the elastic driving piece (13), and the elastic driving piece (13) drives the tensioning assembly (2) to be outwards tensioned.

3. The tensioning and positioning mechanism according to claim 2, wherein the tensioning assembly (2) comprises a floating core (21) and a spring sleeve (22), the floating core (21) and the spring sleeve (22) are sequentially sleeved on the periphery of the power shaft (11), the guide rod (14) penetrates through the floating core (21), and the elastic driving piece (13) is abutted with the floating core (21); the cooperation surface of the floating core (21) and the spring sleeve (22) is a conical surface, the positioning disc (12) moves along the axial direction of the power shaft (11) to compress the elastic driving piece (13), the elastic driving piece (13) drives the floating core (21) to move along the axial direction, and the conical surface drives the spring sleeve (22) to outwards expand and clamp the annular workpiece (100).

4. A tensioning and positioning mechanism according to claim 3, wherein the tensioning assembly (2) further comprises an anti-rotation pin (23), the anti-rotation pin (23) is arranged in the circumferential direction of the floating core (21), a sliding groove is formed in the circumferential direction of the spring sleeve (22) along the axial direction of the power shaft (11), and the anti-rotation pin (23) is matched with the sliding groove and used for limiting the rotation of the spring sleeve (22).

5. A tensioning and positioning mechanism according to claim 2, wherein the elastic driving member (13) comprises a plurality of belleville springs, N belleville springs being a group, and the inner edges or outer edges of two adjacent groups of belleville springs being connected.

6. A tensioning positioning mechanism according to any one of claims 1-5, further comprising a fixed seat (3), said fixed seat (3) being located on one side of a plurality of said tensioning assemblies (2); the fixing seat (3) comprises a first sleeve (31) and a fixing plate (32), the first sleeve (31) is sleeved on the periphery of the power shaft (11), one end of the first sleeve (31) is abutted to the tensioning assembly (2), the other end of the first sleeve is connected with the fixing plate (32), and the fixing plate (32) is connected with the workbench.

7. The tensioning and positioning mechanism according to claim 6, wherein the power shaft (11) comprises a second sleeve (111) and a fixed rod (112), the fixed rod (112) is arranged in the second sleeve (111), one end of the fixed rod (112) is connected with a fixed pressure head (113), and the fixed pressure head (113) is arranged at one end of the power shaft (11); the other end of dead lever (112) is connected with limiting plate (1121), limiting plate (1121) with fixed plate (32) are connected, second sleeve (111) are provided with spacing passageway (1112) along the axis direction, second sleeve (111) are followed the axis direction of dead lever (112) removes, limiting plate (1121) with spacing passageway (1112) cooperation is in order to restrict power shaft (11) rotate.

8. The tensioning and positioning mechanism according to claim 7, wherein a fixing pin sleeve (321) and a first connecting hole are arranged on the fixing plate (32), a positioning pin and a first threaded hole are arranged on the workbench, the fixing pin sleeve (321) is matched with the positioning pin to position the fixing plate (32), and a quick-release screw (4) passes through the first connecting hole to be in threaded connection with the first threaded hole so as to connect the fixing plate (32) with the workbench.

9. A tensioning and positioning mechanism according to claim 8, further comprising a drive assembly (5), said second sleeve (111) being connected to said drive assembly (5) through said fixed plate (32), said drive assembly (5) being adapted to drive said second sleeve (111) in the direction of the axis of said power shaft (11).

10. The tensioning and positioning mechanism according to claim 9, further comprising a quick-connect assembly (6), wherein the quick-connect assembly (6) comprises a fixed joint (61) and a quick-change pull pin (62), wherein the driving end of the driving assembly (5) is connected with the fixed joint (61), and wherein the second sleeve (111) and the fixed joint (61) are connected by the quick-change pull pin (62).