Hexagonal pipe high-precision shape correcting device

Abstract

The utility model relates to a high-precision shape righting device for a hexagonal pipe. The high-precision shape righting device comprises a shape righting base, the moving device is arranged on the orthopedic base; the moving seat is arranged on the shape correcting base in a sliding manner and is connected with the moving device; the shape righting hexagonal sleeve is rotationally arranged on the movable seat; the angle sensor is arranged on the movable seat and is opposite to the shape-righting hexagonal sleeve; the driving hollow shaft is movably arranged on the moving seat and is opposite to the shape-righting hexagonal sleeve; the orthopedic driving device is arranged on the moving seat and is connected with the driving hollow shaft; the clutch is respectively connected with the shape-righting hexagonal sleeve and the driving hollow shaft; the fixed hexagonal sleeve is arranged on the shape correcting base in a sliding mode and connected with the movable base. The rotary hexagonal sleeve is rotationally arranged at one end of the shape righting base and is used for being inserted into the end part of a hexagonal tube; the control device is connected with the angle sensor, the clutch, the moving device and the orthopedic driving device. And the clutch enables the correction hexagonal sleeve to rotate along with the driving hollow shaft during correction so as to correct the deviation angle of the hexagonal tube. The device is accurate in correction angle and good in correction effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hexagonal tube production equipment, especially a high-precision straightening device for hexagonal tube. BACKGROUND

[0002] Fuel assembly is the core of the whole nuclear energy system, and the quality of the tube material is directly related to the safe service of the fuel assembly and the normal operation of the reactor core. At present, in the design of new nuclear energy system, the outer sleeve tube for fuel assembly generally adopts a seamless pipe with a special hexagonal section. When assembling the assembly, the two end faces of the hexagonal tube need to be butt welded with parts of the same section. In view of the long-term safe and stable operation requirement of nuclear power, in addition to the strict quality requirement in the production and manufacturing process of the hexagonal tube, the assembly quality is equally important when assembling the assembly. Because the parts butt welded with the hexagonal tube are relatively fixed in shape and position, in order to ensure that there is no torsional stress between the two parts after butt welding, the hexagonal tube needs to ensure that the projections of the two end faces coincide (torsion degree) before welding.

[0003] During the manufacturing process of the hexagonal tube, after heat treatment, the outer shape of the tube will be deformed and twisted to a certain extent, which cannot ensure that each edge is parallel to the center line, and cannot meet the requirement of coinciding (torsion degree) of the projections of the two end faces before welding.

[0004] In order to make the hexagonal tube meet the requirements, the hexagonal tube needs to be straightened. The existing straightening methods include: using a twisting device, i.e. using two three-jaw chucks to clamp the two ends of the hexagonal tube, one chuck is fixed, and the other chuck is rotated at an angle to twist the whole hexagonal tube at a certain angle to correct the torsional deformation. However, this whole twisting method cannot control the twisting position, and it is difficult to confirm the correction angle, so the correction effect is not ideal. Another method is to use a hexagonal sleeve for manual straightening, but this straightening method requires a lot of manual labor, and the straightening angle is uncontrollable. UTILITY MODEL CONTENTS

[0005] In order to solve the problem of difficult control of the correction angle, the utility model provides a high-precision straightening device for hexagonal tube, and the specific technical scheme is:

[0006] The utility model provides a kind of high-precision orthopaedic device of hexagonal tube, comprising: orthopaedic base;Moving device, the moving device is located on the orthopaedic base;Moving seat, slidingly disposed on the orthopaedic base, and with the moving device is connected;Orthopaedic hexagonal sleeve, rotationally disposed on the moving seat, and with the orthopaedic hexagonal sleeve is oppositely arranged;Drive hollow shaft, rotationally disposed on the moving seat, and with the orthopaedic hexagonal sleeve is oppositely arranged;Orthopaedic drive device, disposed on the moving seat, and with the drive hollow shaft is connected;Clutch, respectively with the orthopaedic hexagonal sleeve and the drive hollow shaft is connected;Fixed hexagonal sleeve, slidingly disposed on the orthopaedic base, and with the moving seat is connected, for slidingly inserted on hexagonal tube to make hexagonal tube not rotate;Rotary hexagonal sleeve, rotationally disposed on one end of the orthopaedic base, for inserting in the end of hexagonal tube;And control device, respectively with the angle sensor, the clutch, the moving device and the orthopaedic drive device is connected;Wherein, the clutch makes the orthopaedic hexagonal sleeve follow the drive hollow shaft rotation to correct the deviation angle of hexagonal tube when orthopaedic, the clutch makes the orthopaedic hexagonal sleeve separate from the drive hollow shaft to make the orthopaedic hexagonal sleeve freely rotate when the moving seat moves.

[0007] Preferably, the orthopaedic drive device comprises: drive box, the drive box is disposed on the moving seat;Turbine, the turbine is rotationally disposed in the drive box, and with the drive hollow shaft is connected;Worm, the worm is rotationally disposed on the drive box, and with the turbine is engaged;And orthopaedic servo motor, the orthopaedic servo motor is mounted on the drive box, and with the worm and the control device is connected.

[0008] Preferably, further comprising: locking device, the locking device is disposed on the moving seat and the fixed hexagonal sleeve, and with the orthopaedic base is oppositely arranged, to make the moving seat and the fixed hexagonal sleeve be fixed on the orthopaedic base.

[0009] Further, the locking device comprises: locking cylinder, the locking cylinder is disposed on both sides of the moving seat and the fixed hexagonal sleeve, and with the control device is connected;And locking block, the locking block is disposed on the locking cylinder, and is inserted on the locking groove of the orthopaedic base, for being pressed on the orthopaedic base by the locking cylinder.

[0010] Further, the locking device further comprises: roller, the roller is disposed on both sides of the moving seat and the fixed hexagonal sleeve, and is active against the orthopaedic base.

[0011] Preferably, the moving device comprises a screw rod, a translation nut, and a translation servo motor.

[0012] Preferably, the moving device further comprises a following seat, a fixed hexagonal sleeve, and a rotation seat.

[0013] Preferably, the moving device further comprises a rotation seat, a rotation hexagonal sleeve, and a rotation servo motor.

[0014] Preferably, the moving device further comprises a grating ruler.

[0015] Compared with the prior art, the hexagonal tube high-precision straightening device has the following beneficial effects:

[0016] The hexagonal tube high-precision straightening device can accurately correct the distortion degree of the hexagonal tube through the angle sensor and the straightening hexagonal sleeve, and can complete the straightening of the entire hexagonal tube through the moving device, the clutch can make the straightening hexagonal sleeve freely move on the distorted hexagonal tube, the straightening of each part is facilitated, the correction angle is easy to confirm, the correction position is reliable, manual correction is not required, the correction effect is good, and the correction precision is high. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front view of the present application;

[0018] Figure 2 is a sectional view along Figure 1 line A-A in FIG. 1;

[0019] Figure 3 is a partial view along Figure 1 line B-B in FIG. 1;

[0020] Figure 4 is a partial view along Figure 1 line C-C in FIG. 1;

[0021] Figure 5 is a partial view along Figure 1 line D-D in FIG. 1;

[0022] Figure 6 is a partial view along Figure 1 line E-E in FIG. 1;

[0023] Figure 7 isFigure 2 a local enlarged view at H;

[0024] Figure 8 is a schematic view of a hexagonal tube before being straightened;

[0025] Figure 9 is a schematic view of a hexagonal tube after being straightened;

[0026] Figure 10 is a flow chart of the straightening process of the hexagonal tube. DETAILED DESCRIPTION

[0027] The utility model will be further described in connection with the drawings.

[0028] As Figures 1 to 10 shown, a hexagonal tube high-precision straightening device comprises a straightening base 1, a moving device, a moving seat 10, a straightening hexagonal sleeve 13, an angle sensor 14, a driving hollow shaft 15, a straightening driving device, a clutch 12, a fixed hexagonal sleeve 25 and a rotating hexagonal sleeve 23. The moving seat 10 is slidably installed on the straightening base 1 through a linear guide pair, the moving device is installed on the straightening base 1 and is connected with the moving seat 10, and is used for driving the moving seat 10 to move. The straightening hexagonal sleeve 13 is rotatably installed on the moving seat 10 through a bearing; the angle sensor 14 is fixed on the moving seat 10 and is oppositely arranged with the straightening hexagonal sleeve 13, and is used for detecting the current angle of the straightening hexagonal sleeve 13; the driving hollow shaft 15 is rotatably installed on the moving seat 10 through a bearing and is oppositely arranged with the straightening hexagonal sleeve 13 and coaxially arranged; the straightening driving device is installed on the moving seat 10 and is connected with the driving hollow shaft 15; the clutch 12 is connected with the straightening hexagonal sleeve 13 and the driving hollow shaft 15 respectively; the fixed hexagonal sleeve 25 is slidably installed on the straightening base 1 through a linear guide pair and is connected with the moving seat 10, and is used for being slidably inserted on the hexagonal tube to prevent the hexagonal tube from rotating; the rotating hexagonal sleeve 23 is rotatably installed on one end of the straightening base 1 and is used for being inserted on the end of the hexagonal tube to enable the hexagonal tube to freely rotate; the clutch 12 enables the straightening hexagonal sleeve 13 to rotate along with the driving hollow shaft 15 to correct the deviation angle of the hexagonal tube when straightening, and enables the straightening hexagonal sleeve 13 to be separated from the driving hollow shaft 15 to enable the straightening hexagonal sleeve 13 to freely rotate when the moving seat 10 moves.

[0029] One end of the hexagonal tube is installed in the rotating hexagonal sleeve 23, and the other end of the hexagonal tube is movably inserted into the driving hollow shaft 15, the orthopedic hexagonal sleeve 13 and the fixed hexagonal sleeve 25. The angle sensor 14 detects the distortion of the hexagonal tube, that is, the current deviation angle of the hexagonal tube, and then the clutch 12 is started. The clutch 12 synchronously rotates the driving hollow shaft 15 with the orthopedic hexagonal sleeve 13, and then the orthopedic driving device drives the driving hollow shaft 15 and the orthopedic hexagonal sleeve 13 to rotate. The orthopedic hexagonal sleeve 13 drives the hexagonal tube to rotate, and the angle sensor 14 detects the angle of the hexagonal tube in real time. When the hexagonal tube rotates to the angle that eliminates the distortion, the orthopedic driving device stops, the orthopedic of the hexagonal tube at this position is completed, and then the clutch 12 is released, so that the driving hollow shaft 15 is separated from the orthopedic hexagonal sleeve 13, and the orthopedic hexagonal sleeve 13 can freely rotate. The moving device drives the orthopedic hexagonal sleeve 13 to move a set distance towards the rotating hexagonal sleeve 23, and then orthopedic of the next section of the hexagonal tube is performed, until the orthopedic of the entire hexagonal tube is completed.

[0030] The orthopedic base 1 is rectangular; the linear guide rails 2 are provided with two, symmetrically fixedly installed on the orthopedic base 1, the linear bearings 3 are slidably installed on the linear guide rails 2, and the linear bearings 3 are connected with the moving seat 10 and the fixed hexagonal sleeve 25. The moving device includes a lead screw 4, a translation nut 8 and a translation servo motor 7; the bearing seats 6 are provided with two and fixedly installed at two ends of the orthopedic base 1, used for fixing the lead screw 4; the lead screw 4 is connected with the translation servo motor 7 through a shaft coupling 5, and rotation of the lead screw 4 is realized through driving of the translation servo motor 7. The translation nut 8 is sleeved on the lead screw 4 and connected with the moving seat 10; the grating ruler 9 is installed on the orthopedic base 1 and parallel to the linear guide rail 2 on one side, and a reading head of the grating ruler 9 is connected with the moving seat 10.

[0031] The angle sensor 14 is installed on the orthopedic hexagonal sleeve 13. The upper part of the orthopedic hexagonal sleeve 13 is provided with a platform for horizontally installing the angle sensor 14.

[0032] In order to facilitate installation of the rotating hexagonal sleeve 23, a rotating seat 22 is further included, which is fixedly installed at one end of the orthopedic base 1 and rotatably connected with the rotating hexagonal sleeve 23 through a bearing.

[0033] In order to facilitate replacement of the fixed hexagonal sleeve 25 and improve universality, a follow-up seat 24 is further included, which is slidably installed on the orthopedic base 1 through a linear guide rail pair, connected with the moving seat 10 through a follow-up pull rod 28, and the fixed hexagonal sleeve 25 is fixed on the follow-up seat 24. The fixed hexagonal sleeve 25 can be replaced with different specifications as needed.

[0034] The clutch 12 is an electromagnetic friction plate clutch 12.

[0035] The orthopedic hexagonal sleeve 13 is installed in the shaft hole on the driven part side of the clutch 12, the external part of the orthopedic hexagonal sleeve 13 is circular as a whole, the internal part is divided into two parts, one part is circular on the outside and the other part is hexagonal on the inside, and the circular shape is slightly larger than the hexagonal shape. The orthopedic driving device comprises a driving box 11, a worm wheel 16, a worm 17 and an orthopedic servo motor 18; the driving box 11 is connected with the moving seat 10 through a follow-up pull rod 28, and the driving box 11 can also be directly fixed on the moving seat 10. The driving hollow shaft 15 is installed in the shaft hole on the driving part side of the clutch 12, the internal part is circular, and the size is larger than the size of the hexagonal tube; the worm wheel 16 is sleeved on the driving hollow shaft 15 and is rotatably installed in the driving box 11 through a bearing, and the worm wheel 16 is also engaged with the worm 17; the worm 17 is connected with the orthopedic servo motor 18 through a coupling 19, and the rotation of the worm 17 is realized through the driving of the orthopedic servo motor 18 so as to drive the worm wheel 16.

[0036] The worm wheel 16 is connected and fixed with the driving hollow shaft 15 through a flat key, the rotation of the worm 17 is realized through the driving of the orthopedic servo motor 18, the worm wheel 16 is rotated by the worm 17, and the internal friction plate of the electromagnetic friction plate clutch 12 is rotated; when the electromagnetic friction plate clutch 12 is not in action, the external friction plate of the driven part of the clutch 12 is in a free state, when the coil 121 of the electromagnetic friction plate clutch 12 is electrified, the armature 122 is attracted, the armature 122 slides to the right to press the external friction plate 123 and the internal friction plate 124, the clutch 12 is engaged to transmit the driving force to the driven part of the clutch 12, and the orthopedic hexagonal sleeve 13 is rotated; when the coil 121 of the clutch 12 loses electricity, the armature 122 slides to the left to loosen the external friction plate 123, the external friction plate 123 is separated from the internal friction plate 124, the clutch 12 is opened, the driven part of the clutch 12 returns to the free state, and the orthopedic hexagonal sleeve 13 can rotate freely, the orthopedic hexagonal sleeve 13 can move on the hexagonal tube without being stuck on the hexagonal tube due to the distortion of the hexagonal tube, and the movement of the orthopedic hexagonal sleeve 13 is facilitated.

[0037] In order to improve the stability during orthopedic treatment and make the stress uniform, a locking device is further arranged on the moving seat 10 and the fixed hexagonal sleeve 25 and is arranged opposite to the orthopedic base 1 to fix the moving seat 10 and the fixed hexagonal sleeve 25 on the orthopedic base 1. The locking device comprises a locking cylinder 20 and a locking block 21, the locking cylinder 20 is a hydraulic cylinder, the locking cylinder 20 is installed on the two sides of the moving seat 10 and the fixed hexagonal sleeve 25, the locking block 21 is installed on the piston rod of the locking cylinder 20 and is movably inserted into the locking groove 31 of the orthopedic base 1, the locking groove 31 is arranged along the length direction of the orthopedic base 1 and is a waist-shaped groove, the locking cylinder 20 presses the locking block 21 on the orthopedic base 1 to fix the moving seat 10, and the locking block 21 is a T-shaped block.

[0038] The locking device further comprises rollers 30 arranged on both sides of the moving seat 10 and the fixed hexagonal sleeve 25 and abutting against the orthopedic base 1. The rollers 30 can reduce the stress on the linear guide rail pair and improve the stability.

[0039] The follow-up pull rod 28 can adjust the distance between the moving seat 10 and the follow-up seat 24, so as to facilitate adjustment according to the needs of orthopedics. Adjusting the distance between the moving seat 10 and the follow-up seat 24 is equivalent to adjusting the distance between the fixed hexagonal sleeve 25 and the orthopedic hexagonal sleeve 13. A smaller distance can be more helpful to constrain the hexagonal tube that has completed orthopedics and prevent it from deforming again.

[0040] Both automatic and point modes can be realized. Forward movement is realized according to the control of the translation servo motor 7. In the free state, the deviation angle of the corresponding position of the hexagonal tube is detected by the angle sensor 14, and the deviation angle is transmitted to the orthopedic servo motor 18. At the same time, a certain over-correction angle is needed according to the springback characteristics of the tube. A suitable value can be set in the angle compensation option, and the angle compensation value is also controlled by the orthopedic servo motor 18. The two together control the reverse correction angle of the orthopedic servo motor 18. After orthopedics, the moving seat 10 is retracted. During the retraction of the moving seat 10, the overall length and angle deviation of the tube are detected by using the grating ruler 9 and the angle sensor 14, so as to ensure the quality of orthopedics and realize high-precision orthopedics.

[0041] During orthopedics: the deviation angle of the current position of the hexagonal tube is first detected by the angle sensor 14, and the data is transmitted to the control device. Then, the orthopedic servo motor 18 rotates the corresponding orthopedic angle, and after completion, the moving device drives the moving seat 10 and the fixed hexagonal sleeve 25 to continue to move forward by a set distance and perform orthopedics until the overall orthopedics of the hexagonal tube is completed.

[0042] One end of the hexagonal tube is movably inserted into the fixed hexagonal sleeve 25, which can prevent the hexagonal tube from rotating. The fixed hexagonal sleeve 25 cooperates with the orthopedic hexagonal sleeve 13 to perform orthopedic treatment. The hexagonal tube passes through the hollow drive shaft 15, and the other end of the hexagonal tube is inserted into the rotating hexagonal sleeve 23, which can rotate and freely rotate with the degree of distortion of the hexagonal tube. When the clutch 12 is in the disengaged state, the orthopedic hexagonal sleeve 13 can freely rotate and follow the deflection of the hexagonal tube. The angle sensor 14 is horizontally installed and can measure the deflection angle of the current position of the hexagonal tube. The data is transmitted to the control device, and the angle compensation option in the HMI interface is filled with the appropriate compensation angle according to the performance of the pipe. The two data are superimposed to provide the angle that the orthopedic servo motor 18 needs to rotate in the opposite direction for orthopedic treatment. The clutch 12 is attracted, and the orthopedic servo motor 18 starts to operate. The worm 17 drives the worm wheel 16, and the driving part of the clutch 12 rotates to drive the driven part of the clutch 12 to rotate synchronously, so that the orthopedic hexagonal sleeve 13 rotates by the corresponding orthopedic angle. After the orthopedic treatment is completed, the clutch 12 is disconnected, and the translation servo motor 7 starts to operate according to the set value in the translation distance option in the HMI interface. After the moving seat 10, the drive box 11, and the follower seat 24 are driven by the screw rod 4 and the translation nut 8 to advance synchronously by the set distance, the translation distance option stops. The set value of the translation distance is small, which can increase the number of orthopedic treatments and achieve high-precision fine orthopedic treatment. The angle sensor 14 starts to transmit the deflection angle of the new position to the system, and the orthopedic device starts a new round of orthopedic operation.

[0043] During the orthopedic treatment of the hexagonal tube, one end of the hexagonal tube is fixed to the rotating hexagonal sleeve 23 of the rotating seat 22. This end is a free end and can rotate at will. The other end of the hexagonal tube is movably inserted into the fixed hexagonal sleeve 25 of the follower seat 24. This end is angle-fixed and cannot rotate. One side of the follower seat 24 is the part of the hexagonal tube that has completed orthopedic treatment. The fixed hexagonal sleeve 25 is used to assist orthopedic treatment. During orthopedic treatment, the end of the hexagonal tube is fixed so that the hexagonal tube cannot freely rotate, and the orthopedic part is close to the fixed part, which can ensure the quality of orthopedic treatment, reduce the rebound after orthopedic treatment, and improve the efficiency of orthopedic treatment. The locking cylinders 20 at both ends of the drive box 11 and the follower seat 24 are firmly fixed to the orthopedic base 1 through the locking blocks 21 when the orthopedic servo motor 18 rotates, overcoming the large torsion generated during orthopedic treatment and ensuring the stability of the mechanism.

[0044] Detection of the overall length and angle deviation of the pipe: After the overall orthopedic treatment of the hexagonal tube is completed, the overall detection option in the HMI interface can be selected. Clicking back, the translation servo motor 7 starts to rotate in the opposite direction, and the moving seat 10 retreats. The angle sensor 14 can detect the overall angle deviation of the hexagonal tube, and the grating ruler 9 can measure the overall length of the pipe and display it on the HMI interface.

[0045] As shown in Figure 8 , the hexagonal tube produces angular distortion after stress relief.Figure 1 and Figure 2 As shown, one end of the hexagonal tube 29 to be corrected is fixed to the rotating hexagonal sleeve 23 of the rotating seat 22, and the other end passes through the correcting hexagonal sleeve 13, the driving hollow shaft 15, and the fixing hexagonal sleeve 25. Figure 9 As shown, clutch 12 is in the disengaged state, and the straightening hexagonal sleeve 13 is in a free state, capable of deflecting according to the shape of the hexagonal tube 29, and transmitting the detected deviation angle to the control device. At this time, the coil 121 of clutch 12 is energized, attracting armature 122, causing armature 122 to slide to the right and press against outer friction plate 123 and inner friction plate 124. Clutch 12 is engaged, transmitting driving force to the driven part of clutch 12. Locking cylinder 20 is activated, firmly fixing drive box 11 and follower seat 24 to straightening base 1. Straightening servo motor 18 starts to rotate in the opposite direction according to the deviation angle of the current position detected by angle sensor 14 and the compensation angle set in HMI interface. Through worm gear 17 and turbine 16, it drives straightening hexagonal sleeve 13 to rotate by the corresponding angle to straighten hexagonal tube 29. During straightening, the unstraightened part of hexagonal tube 29 rotates with straightening hexagonal sleeve 13, while the straightened part is restricted by fixed hexagonal sleeve 25 and does not twist. After the straightening is completed, the coil 121 of the clutch 12 is de-energized, the armature 122 slides to the left, the outer friction plate 123 and the inner friction plate 124 separate, the clutch 12 opens, and the driven part of the clutch 12 returns to a free state. At the same time, the locking cylinder 20 is released. The translation servo motor 7 starts to move according to the set value in the translation distance in the HMI interface. It drives the moving seat 10, the drive box 11 and the follower seat 24 to move forward synchronously by the lead screw 4 and the translation nut 8 and then stops. During the movement, the straightening hexagonal sleeve 13 is in a free state. After the translation, the angle sensor 14 measures the deviation angle of the new position and transmits the data to the control device. The straightening servo motor 18 performs the corresponding angle straightening according to the new data. By continuously repeating the above actions, the overall straightening of the hexagonal tube is completed.

[0046] After the correction is completed, select the overall detection option in the HMI interface, click back, the translation servo motor 7 starts to rotate in the reverse direction, the moving seat 10 starts to retract, driving the reading head of the grating ruler 9 to move. The overall length of the tube can be measured through the grating ruler 9. The correction hexagonal sleeve 13 is in a free state. During the translation process, the angle sensor 14 can detect the overall angle deviation of the hexagonal tube and display it on the HMI interface.

[0047] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A high-precision orthopedic device for hexagonal tubes, characterized in that, include: Orthopedic base (1); A mobile device, which is mounted on the orthopedic base (1); The movable seat (10) is slidably disposed on the orthopedic base (1) and connected to the movable device; The orthopedic hexagonal sleeve (13) is rotatably mounted on the movable seat (10); An angle sensor (14) is disposed on the movable seat (10) and is disposed opposite to the orthopedic hexagonal sleeve (13); Drive the hollow shaft (15), which is rotatably mounted on the movable seat (10) and is positioned opposite to the orthopedic hexagonal sleeve (13); The orthopedic drive device is mounted on the movable seat (10) and connected to the drive hollow shaft (15); The clutch (12) is connected to the orthopedic hexagonal sleeve (13) and the drive hollow shaft (15) respectively; A fixed hexagonal sleeve (25) is slidably disposed on the orthopedic base (1) and connected to the movable seat (10) for slidingly inserting into the hexagonal tube so that the hexagonal tube does not rotate; Rotate the hexagonal sleeve (23) to rotate one end of the orthopedic base (1), which is used to insert into the end of the hexagonal tube; and The control device is connected to the angle sensor (14), the clutch (12), the moving device and the orthopedic drive device respectively; During the straightening process, the clutch (12) causes the straightening hexagonal sleeve (13) to rotate with the drive hollow shaft (15) to correct the deviation angle of the hexagonal tube. When the moving seat (10) moves, the clutch (12) causes the straightening hexagonal sleeve (13) to separate from the drive hollow shaft (15) so that the straightening hexagonal sleeve (13) can rotate freely.

2. The high-precision hexagonal tube straightening device according to claim 1, characterized in that, The orthopedic drive device includes: A drive box (11) is mounted on the movable base (10); Turbine (16), which is rotatably disposed in the drive box (11) and connected to the drive hollow shaft (15); A worm gear (17), which is rotatably mounted on the drive housing (11) and meshes with the turbine (16); and Orthopedic servo motor (18) is mounted on the drive box (11) and connected to the worm gear (17) and the control device.

3. The high-precision orthopedic device for hexagonal tubes according to claim 1, characterized in that, Also includes: A locking device is provided on the movable seat (10) and the fixed hexagonal sleeve (25) and is arranged opposite to the orthopedic base (1) so that the movable seat (10) and the fixed hexagonal sleeve (25) are fixed on the orthopedic base (1).

4. The high-precision orthopedic device for hexagonal tubes according to claim 3, characterized in that, The locking device includes: A locking cylinder (20) is located on both sides of the movable seat (10) and the fixed hexagonal sleeve (25) and is connected to the control device; and Locking block (21), the locking block (21) is disposed on the locking cylinder (20) and is movably inserted into the locking groove (31) of the orthopedic base (1) for pressing on the orthopedic base (1) by the locking cylinder (20).

5. The high-precision orthopedic device for hexagonal tubes according to claim 4, characterized in that, The locking device further includes a roller (30), which is located on both sides of the movable seat (10) and the fixed hexagonal sleeve (25) and moves against the orthopedic base (1).

6. The high-precision orthopedic device for hexagonal tubes according to claim 1, characterized in that, The mobile device includes: A lead screw (4) is rotatably mounted on the orthopedic base (1); Translation nut (8), the translation nut (8) is disposed on the lead screw (4) and connected to the movable seat (10); and Translation servo motor (7) is mounted on the orthopedic base (1) and connected to the lead screw (4) and the control device.

7. The high-precision orthopedic device for hexagonal tubes according to claim 1, characterized in that, Also includes: Follower seat (24), which is slidably mounted on the orthopedic base (1) and connected to the movable seat (10), and the fixed hexagonal sleeve (25) is fixed on the follower seat (24).

8. The high-precision orthopedic device for hexagonal tubes according to claim 1, characterized in that, Also includes: Rotating seat (22), the rotating seat (22) is located at one end of the orthopedic base (1) and is rotatably connected to the rotating hexagonal sleeve (23).

9. A high-precision hexagonal tube straightening device according to claim 1, characterized in that, Also includes: A grating ruler (9) is mounted on the orthopedic base (1) and connected to the movable seat (10) and the control device for detecting the length of the hexagonal tube and the position of the movable seat (10).

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