Clamp for tensioning connector

Abstract

A clamp for tensioning a connector comprises a clamp body used for being installed on wire cutting equipment; the rotating positioning piece comprises a locking part, a reference part and a rotating part, the reference part and the rotating part are coaxially arranged, the rotating part is rotationally installed on the clamp body, the reference part is polygonal, the number of the side edges of the reference part is the same as that of the long grooves of the tensioning connector, and the reference part is provided with an installation hole allowing the installation section of the tensioning connector to be coaxially inserted; the locking part is arranged on the reference part and is used for fixing the reference part and the tensioning connector; and the fixing piece is arranged on the clamp main body and is used for keeping the clamp main body and the rotary positioning piece relatively static. The position of a part can be determined through one-time clamping and positioning, meanwhile, the machining angle can be rapidly changed by rotating the clamping position on the clamp, and the problem of repeated clamping and positioning when a tensioning connector is machined is solved.

Description

Technical Field

[0001] This application relates to the field of tensioning joint processing technology, specifically to a clamp for tensioning joints. Background Technology

[0002] Tensioning joints are keyless connection devices widely used in various mechanical connections. For current information, please refer to... Figure 1 The tensioning joint includes a mating section, a connecting section, and an installation section arranged in a stepped axis, with the diameters of the mating section, connecting section, and installation section decreasing sequentially. The mating section and connecting section have multiple long grooves evenly distributed circumferentially, and the length direction of these grooves is along the axis of the tensioning joint. This allows the inner ring diameter of the tensioning joint to be adjusted when it is connected to other structures, and the connection is held in place by friction. Due to the large number of long grooves, their narrow width, and thin wall thickness, deformation is easily caused during processing. To control processing deformation and ensure the accuracy of the tensioning joint, wire EDM, a process with low cutting force, is generally used for machining.

[0003] In existing technology, since the tensioning joint is cylindrical, there are no features to refer to for positioning and machining when processing the long groove at the front end (butt joint section). For machining the tensioning joint, please refer to... Figure 2 Generally, a certain length of external polygonal feature is reserved at the tail (installation section) of the tensioning joint. The number of sides of the polygon is the same as the number of long slots of the tensioning joint. The long slots at the front end of the tensioning joint are cut by line cutting corresponding to the reserved polygons. After processing, the external polygonal feature at the tail end is cut off.

[0004] While the above technical solution can effectively process multiple long grooves at the front end of the tensioning joint, the reference features need to be removed subsequently. Furthermore, the wire cutting process requires production personnel to repeatedly clamp and position the entire part, which may affect the machining accuracy of the part. In mass production, the operation is too cumbersome and affects production efficiency. Utility Model Content

[0005] This application provides a clamp for tensioning joints, which can reduce the problem of repeated clamping and positioning when processing tensioning joints.

[0006] According to this application, one embodiment provides a clamp for a tensioning joint, comprising:

[0007] The fixture body is used for mounting on in-line cutting equipment;

[0008] A rotary positioning component includes a locking part and a reference part and a rotating part coaxially arranged. The rotating part is rotatably mounted on the fixture body. The reference part is polygonal, and the number of its sides is the same as the number of long slots of the tensioning joint. The reference part has mounting holes for the coaxial insertion of the mounting section of the tensioning joint. The locking part is disposed on the reference part and used to fix the reference part and the tensioning joint.

[0009] A fixing element is provided on the fixture body and is used to keep the fixture body and the rotary positioning element relatively stationary.

[0010] In another embodiment, the fixing member includes a sliding block, one end of which is slidably mounted on the fixture body, and the other end is set as a positioning plane, which is used to fit against any side wall of the reference part to restrict the rotation of the reference part.

[0011] In another embodiment, the fixture body includes a base and a mounting base arranged perpendicularly to each other. The base is used to mount the fixture on a wire cutting device, and the mounting base has a rotating hole for mounting the rotary positioning component.

[0012] In another embodiment, the base has a guide groove for the sliding block to slide along the axis of the rotating positioning member, and the guide groove is used to limit the sliding block from deviating.

[0013] In another embodiment, the front end of the guide groove is disposed below the reference part, and the other end of the guide groove passes through the base to quickly disassemble the sliding block.

[0014] In another embodiment, a rotary bearing is further included, wherein the rotating part is coaxially mounted on the inner ring of the rotary bearing, and the outer ring of the rotary bearing is coaxially mounted on the inner wall of the rotating hole.

[0015] In another embodiment, a threaded through hole is provided on any side wall of the reference part, and the locking part is threadedly installed in the threaded through hole and abuts against the tensioning joint.

[0016] In another embodiment, the flatness of the bottom surface of the base is less than 0.005 mm, and the parallelism between the top surface of the base, the axis of the rotating hole, the guide groove and the bottom surface of the base is not greater than 0.005 mm.

[0017] In another embodiment, the coaxiality between the inner ring of the rotary bearing and the mounting hole is less than 0.01 mm.

[0018] In another embodiment, the fit clearance between the positioning plane and any sidewall of the reference portion is less than 0.005 mm.

[0019] According to the above embodiment, the tensioning joint fixture independently sets up a polygon for reference, rotatably mounts the reference part onto the fixture body via a rotating part, mounts the part on the reference part and fixes it with a locking part, and adjusts the fixing and rotation of the reference part by a fixing member, thereby enabling wire cutting of the part; the position of the tensioning joint is determined by a single clamping and positioning, and the machining angle can be quickly changed by the fixing member, effectively reducing the problem of repeated positioning when machining the tensioning joint, reducing the machining operation steps and machining time of the machining personnel, improving production efficiency, and effectively ensuring the stability of the production and machining of the tensioning joint. Attached Figure Description

[0020] Figure 1 A drawing of the finished part of an existing tensioning joint;

[0021] Figure 2 This is a drawing of a semi-finished part of an existing tensioning joint in its unprocessed long groove state;

[0022] Figure 3 This is a schematic diagram of the overall assembly of the tensioning joint clamp in one embodiment;

[0023] Figure 4 for Figure 3 Explosion diagram along the assembly direction;

[0024] Figure 5 This is an assembly schematic diagram of the tensioning joint clamp from another perspective in one embodiment.

[0025] Reference numerals: 1. Tensioning joint; 11. Butt joint section; 12. Connecting section; 13. Mounting section; 14. Long groove; 2. Fixture body; 21. Base; 22. Mounting seat; 23. Rotary hole; 24. Guide groove; 3. Rotary positioning component; 31. Locking part; 311. Set screw; 32. Reference part; 321. Threaded through hole; 33. Rotating part; 34. Mounting hole; 4. Fixing component; 41. Sliding block; 42. Positioning plane; 5. Rotary bearing. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0027] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0028] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0029] Tensioner joint 1 is a keyless connection device, widely used in various mechanical connections. Figure 1 The diagram shows the finished part of the tensioning joint 1. The tensioning joint 1 includes a mating section 11, a connecting section 12, and a mounting section 13 arranged in a stepped axis. The diameters of the mating section 11, connecting section 12, and mounting section 13 decrease sequentially. The mating section 11 and connecting section 12 have multiple elongated grooves 14 evenly distributed circumferentially, with the length direction of the grooves 14 aligned with the axis of the tensioning joint 1. This allows the inner ring diameter of the tensioning joint 1 to be adjusted when mating with other structures, and the connection is held in place by friction. Specifically, there are 16 elongated grooves 14, each 0.5 mm wide. Due to the large number of grooves 14, their small width, and thin wall thickness, deformation is easily caused during processing. To control processing deformation and ensure the accuracy of the tensioning joint 1, wire cutting, a process with low cutting force, is generally used for machining.

[0030] In the existing technology, since the tensioning joint 1 is cylindrical as a whole, there are no features on the tensioning joint 1 itself that can be referenced for positioning and machining when processing the 0.5mm long groove 14 at the front end (butting section 11). In order to process the tensioning joint 1, please refer to Figure 2This is a drawing of a semi-finished part in the state of the unprocessed long groove 14. Generally, a 15mm-20mm outer polygon feature is reserved at the tail of the tensioning joint 1 (installation section 13). The number of sides of the polygon is the same as the number of long grooves 14 of the tensioning joint 1, that is, a hexagon. The 0.5mm long groove 14 at the front end of the tensioning joint 1 is cut by the reserved hexagon. After processing, the outer polygon feature at the tail is cut off.

[0031] In the above technical solution, although multiple long grooves 14 at the front end of the tensioning joint 1 can be effectively processed, the reference features need to be removed afterward. Moreover, the wire cutting process requires production personnel to repeatedly clamp and position the entire part. Repeated clamping may affect the processing accuracy of the part. The operation is too cumbersome during mass production of the part, which affects the production efficiency.

[0032] This application provides a clamping fixture for tensioning joints, which can reduce the problem of repeated clamping and positioning when machining tensioning joints 1. The position of the part is determined by clamping and positioning once, and the machining angle can be quickly changed by rotating the clamping position on the fixture.

[0033] Please refer to Figure 3 and Figure 4 This embodiment discloses a clamp for a tensioning joint, comprising: a clamp body 2 for mounting on an online cutting device; a rotating positioning member 3, including a locking part 31 and a reference part 32 and a rotating part 33 coaxially arranged, the rotating part 33 being rotatably mounted on the clamp body 2, the reference part 32 being polygonal, and the number of sides of the reference part 32 being the same as the number of long slots 14 of the tensioning joint 1, the reference part 32 having mounting holes 34 for coaxial insertion of the mounting section 13 of the tensioning joint 1, the locking part 31 being disposed on the reference part 32 and used to fix the reference part 32 and the tensioning joint 1; and a fixing member 4, disposed on the clamp body 2 and used to keep the clamp body 2 and the rotating positioning member 3 relatively stationary.

[0034] In this application, the reference part 32 is specifically set as a hexagon. By setting the polygon for reference independently, the reference part 32 is rotatably mounted on the fixture body 2 by the rotating part 33. The part is mounted on the reference part 32 and fixed by the locking part 31. The fixing and rotation of the reference part 32 are adjusted by the fixing member 4, thereby enabling wire cutting of the part.

[0035] The solution in this embodiment can determine the position of the tensioning joint 1 through a single clamping and positioning, and at the same time, the processing angle can be quickly changed through the fixing part 4. This effectively reduces the problem of repeated positioning when processing the tensioning joint 1, reduces the processing operation steps and processing time of the processing personnel, improves the production and processing efficiency, and effectively ensures the stability of the production and processing of the tensioning joint 1.

[0036] For further details, please refer to... Figure 3 and Figure 4The fixture body 2 includes a base 21 and a mounting base 22 arranged perpendicularly to each other. The base 21 is used to install on the wire cutting equipment, and the mounting base 22 has a rotating hole 23 for installing the rotating positioning component 3.

[0037] In this embodiment, please refer to Figure 1 The base 21 is horizontally set, and the mounting base 22 is vertically set. The flatness of the bottom surface of the base 21 is less than 0.005mm. The axis of the rotating hole 23 is horizontal and passes through the mounting base 22. A rotary bearing 5 is set inside the rotating hole 23. The outer ring of the rotary bearing 5 is coaxially set with the rotating hole 23 and fixed to the inner wall of the rotating hole 23. The inner ring of the rotary bearing 5 is coaxially inserted and fixed by the rotating part 33, thereby reducing the rotational friction between the rotating positioning part 3 and the mounting base 22 and facilitating the adjustment of the machining angle.

[0038] In this embodiment, in order to further ensure the machining accuracy of the tensioning joint 1, the coaxiality between the inner ring of the rotary bearing 5 and the mounting hole 34 is less than 0.01 mm.

[0039] For further details, please refer to... Figure 3 , Figure 4 and Figure 5 In order to achieve rapid adjustment and fixation of the rotating positioning component 3, the fixing component 4 includes a sliding block 41. The lower end of the sliding block 41 is slidably mounted on the fixture body 2, and the upper end is set as a positioning plane 42. The positioning plane 42 is used to fit against any side wall of the reference part 32 to restrict the rotation of the reference part 32.

[0040] For details, please refer to Figure 3 and Figure 4 The base 21 has a guide groove 24 for the sliding block 41 to slide along the axis of the rotating positioning member 3. The guide groove 24 is used to limit the sliding block 41 from deviating. The guide groove 24 includes two parts on both sides of the mounting base 22. One part of the guide groove 24 is located on the side of the mounting base 22 where the tensioning joint 1 is installed, and the other part of the guide groove 24 is located on the side of the mounting base 22 away from the tensioning joint 1. That is, the front end of the guide groove 24 extends and is located below the reference part 32. When the sliding block 41 slides to the front end of the guide groove 24, the positioning plane 42 at the upper end of the sliding block 41 is in close contact with any side wall of the hexagon, thereby fixing the rotating positioning member 3. When the sliding block 41 slides away from the reference part 32, the rotating positioning member 3 is released from locking, so as to adjust and lock it again. The other end of the guide groove 24 is provided through the base 21 to facilitate quick disassembly of the sliding block 41.

[0041] In this embodiment, in order to further ensure the machining accuracy of the tensioning joint 1, the fitting clearance between the positioning plane 42 and any side wall of the reference part 32 is less than 0.005mm.

[0042] Please refer to Figure 3 and Figure 4A threaded through hole 321 is provided on any one of the side walls of the reference part 32. The locking part 31 is threaded into the threaded through hole 321 and is tightly abutted against the tensioning joint 1. Specifically, the locking part 31 uses a set screw 311, which cooperates with the threaded through hole 321 to lock. When machining each long groove 14, the tensioning joint 1 is fixed at once without repeated positioning. Moreover, the tensioning joint 1 and the rotating positioning part of the reference are always in a relatively stationary state. Therefore, the assembly error caused by tooling positioning is further reduced throughout the machining process.

[0043] In this embodiment, in order to further ensure the processing accuracy of the tensioning joint 1, the parallelism between the top surface of the base 21 and the bottom surface of the base 21, the parallelism between the axis of the rotating hole 23 and the bottom surface of the base 21, and the parallelism between the guide groove 24 and the bottom surface of the base 21 are all no greater than 0.005mm.

[0044] The tensioning joint 1 fixture disclosed in this application requires assembly before parts processing, specifically including the following steps:

[0045] First, tightly fit the rotary bearing 5 into the rotating hole 23 in the middle of the mounting base 22 of the fixture body 2, and then tightly fit one end of the rotating part 33 of the rotary positioning part 3 into the inner ring of the rotary bearing 5.

[0046] The base 21 of the assembled fixture body 2 is fixed to the worktable of the wire cutting equipment by bolts, and then the fixture is calibrated to facilitate the installation of the tensioning joint 1.

[0047] The tensioning connector 1 is inserted into the mounting hole 34 coaxial with the reference part 32 and fixed with the set screw 311 so that the two remain relatively stationary.

[0048] The sliding block 41 is placed into the guide groove 24 of the base 21 of the fixture body 2 through the guide groove 24, and pushed to the front end of the guide groove 24 and cooperated with the peripheral side wall of the hexagonal reference part 32 to fix the machining angle.

[0049] After each 0.5mm long groove 14 is processed, the sliding block 41 is pushed back and the rotation positioning part 3 is adjusted to change the processing angle of the 0.5mm groove until the processing of 16 long grooves 14 is completed.

[0050] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A clamp for a tensioning joint, characterized in that, include: The fixture body (2) is used for mounting on the online cutting equipment; A rotating positioning component (3) includes a locking part (31) and a reference part (32) and a rotating part (33) arranged coaxially. The rotating part (33) is rotatably mounted on the fixture body (2). The reference part (32) is polygonal, and the number of sides of the reference part (32) is the same as the number of long slots (14) of the tensioning joint (1). The reference part (32) has mounting holes (34) for coaxial insertion of the mounting section (13) of the tensioning joint (1). The locking part (31) is disposed on the reference part (32) and used to fix the reference part (32) and the tensioning joint (1). A fixing member (4) is provided on the clamp body (2) and is used to keep the clamp body (2) and the rotating positioning member (3) relatively stationary.

2. The clamp for tensioning joints as described in claim 1, characterized in that, The fixing member (4) includes a sliding block (41), one end of which is slidably mounted on the fixture body (2), and the other end is set as a positioning plane (42). The positioning plane (42) is used to fit against any side wall of the reference part (32) to restrict the rotation of the reference part (32).

3. The clamp for tensioning joints as described in claim 2, characterized in that, The fixture body (2) includes a base (21) and a mounting base (22) arranged perpendicularly to each other. The base (21) is used to install on the wire cutting equipment, and the mounting base (22) has a rotating hole (23) for installing the rotating positioning component (3).

4. The clamp for tensioning joints as described in claim 3, characterized in that, The base (21) has a guide groove (24) for the sliding block (41) to slide along the axis of the rotating positioning member (3). The guide groove (24) is used to limit the sliding block (41) from deviating.

5. The clamp for tensioning joints as described in claim 4, characterized in that, The front end of the guide groove (24) is located below the reference part (32), and the other end of the guide groove (24) passes through the base (21) to quickly disassemble the sliding block (41).

6. The clamp for tensioning joints as described in claim 3, characterized in that, It also includes a rotary bearing (5), the rotating part (33) is coaxially mounted on the inner ring of the rotary bearing (5), and the outer ring of the rotary bearing (5) is coaxially mounted on the inner wall of the rotating hole (23).

7. The clamp for tensioning joints as described in claim 1, characterized in that, The reference part (32) has a threaded through hole (321) on any side wall. The locking part (31) is threadedly installed in the threaded through hole (321) and tightly abuts against the tensioning joint (1).

8. The clamp for tensioning joints as described in claim 4, characterized in that, The flatness of the bottom surface of the base (21) is less than 0.005 mm, and the parallelism between the top surface of the base (21), the axis of the rotating hole (23), and the guide groove (24) and the bottom surface of the base (21) is not greater than 0.005 mm.

9. The clamp for tensioning joints as described in claim 6, characterized in that, The coaxiality between the inner ring of the rotary bearing (5) and the mounting hole (34) is less than 0.01 mm.

10. The clamp for tensioning joints as described in claim 2, characterized in that, The fitting clearance between the positioning plane (42) and any side wall of the reference part (32) is less than 0.005 mm.

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