A turning device for preventing core deviation in polished rod processing

Abstract

The invention discloses a turning device for preventing core deviation in polished rod processing, which relates to the technical field of polished rod processing, comprises a base, a fixed seat is provided on one side of the top surface of the base, a movable seat is provided on the other side of the top surface of the base, and a guide column is fixedly connected to the inner side surface of the fixed seat; a cutter is installed on the guide column, and an adjustment component is provided inside the guide column; a transverse movement component is provided inside the transverse movement cavity; a fixed cylinder is fixedly connected to the turntable, a guide cylinder is installed on the fixed cylinder, and abutment components are provided inside the fixed cylinder and the guide cylinder; a collet is installed on the inner side surface of the turntable; the invention facilitates the one-time turning operation from the head to the tail of the rod to be turned through the cooperation of the guide cylinder, the abutment component, the collet and the push rod, which can effectively avoid the occurrence of eccentricity and steps in the secondary turning of the polished rod; and when the rod to be turned is processed, it can play a role of automatic centering of the head axis and the tail axis, which can improve the compliance rate of the rod body after forming during the turning operation.

Description

Technical Field

[0001] The invention relates to the technical field of polished rod processing, in particular to a turning device for preventing core deviation in polished rod processing. Background Art

[0002] Since the existing FSSBR20G932-G product has a polished rod size of (51.40-52.60mm) long, it needs to be turned in two steps when processing it. When processing the rod, the existing turning equipment generally clamps one end of the rod through a collet, and then performs turning processing on it in a two-step turning process. First, the first step is to clamp the head of the polished rod through the collet, and perform turning operations from the head to the tail. Then, in the second step, the collet is used to release the clamping of the head of the rod, and then the tail of the rod is placed in the collet, so that the collet clamps the tail of the rod, and the turning operation is performed from the tail to the head of the rod. However, the turning part in the second step is prone to eccentricity and steps at the interface with the turning part in the first step, which leads to eccentricity and steps in the middle of the rod when producing the polished rod structure, resulting in an increase in the defective rate of the rod; therefore, the above-mentioned problems need to be improved. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a turning device for polished rod processing to prevent core deviation.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a turning device for preventing the core from being eccentric in polished rod processing, comprising a base, a fixed seat is provided on one side of the top surface of the base, a movable seat is slidably provided on the other side of the top surface of the base, and a guide column is transversely fixedly connected to the middle part of the inner side surface of the fixed seat; a slide plate is slidably provided on the upper inclined surfaces of the front and rear ends of the guide column, and a cutter is installed on the top of the slide plate, and an adjustment component for moving the cutter is provided inside the guide column; a transverse movement cavity is provided in the bottom of the base, and a transverse movement component for moving the movable seat is provided inside the transverse movement cavity; a turntable is rotatably provided on the front and rear ends of the upper inner side surface of the fixed seat, a fixed cylinder is fixedly connected on the inner side surface of the turntable, a guide cylinder for limiting the end of the polished rod is installed on the fixed cylinder, and abutment components are provided inside the fixed cylinder and the guide cylinder; a turntable is rotatably provided on the front and rear ends of the upper inner side surface of the movable seat, a collet with the same axis as the guide cylinder is installed on the inner side surface of the turntable, and a reduction motor for driving the turntable is provided on the front and rear ends of the upper inner side surface of the movable seat.

[0005] Preferably, a guide opening is transversely opened in the middle of the inner side surface of the movable seat to cooperate with the guide column, a receiving plate is transversely fixed to the bottom of the inner side surface of the movable seat, and a through flat opening is transversely opened at the bottom of the inner side surface of the fixed seat for the receiving plate to pass through.

[0006] Preferably, an installation cavity is opened in the upper part of the fixing seat, a servo motor is arranged inside the installation cavity, a driving gear is fixedly connected to the driving shaft of the servo motor, the rotating shaft on the outer surface of the turntable movably passes through the installation cavity and is fixedly connected to a driven gear, the driving gear is located between the two driven gears, and the driven gear is meshed with the driving gear for transmission.

[0007] Preferably, the transverse movement assembly includes a screw that rotates laterally inside the transverse movement cavity, a driving motor that is arranged inside the base on one side of the transverse movement cavity, and a threaded cylinder that is movably sleeved on the screw. The driving shaft of the driving motor is coaxially fixed to one end of the screw, and a connecting plate is vertically fixed to the top of the threaded cylinder. A rectangular opening is laterally opened on the inner top surface of the transverse movement cavity, and the top end of the connecting plate extends from the rectangular opening and is fixed to the bottom of the moving seat.

[0008] Preferably, the abutment assembly includes an abutment ring fixed inside the fixed cylinder and the guide cylinder, a plurality of fixed shells longitudinally fixed to the circumference of the outer side surface of the abutment ring, and a push rod longitudinally movably arranged inside each fixed shell, and the inner ends of the push rods are movable and penetrate to the outside of the inner side surface of the abutment ring; a thrust spring is provided inside the fixed shell, and the outer end of the push rod is fixed to the inner end of the thrust spring.

[0009] Preferably, a threaded groove is provided on the inner ring wall of the inner end of the fixed cylinder, an abutment groove is provided on the inner wall of the inner end of the guide cylinder, and a connecting ring cooperating with the threaded groove is fixedly connected to the outer end of the guide cylinder; a plurality of anti-slip convex strips are equidistantly provided on the inner wall of the abutment groove of the guide cylinder, and the outer surface of the anti-slip convex strips is rough.

[0010] Preferably, the adjustment assembly includes a screw rod transversely arranged inside the guide column, a driving motor arranged inside the inner end of the guide column and a threaded tube sleeved on the screw rod, the driving shaft of the driving motor is coaxially fixed to the inner end of the screw rod, the inclined surfaces on the upper parts of the front and rear end surfaces of the guide column are transversely provided with strip openings, the front and rear end surfaces of the top of the threaded tube are obliquely fixed with fixing plates, and the outer end of the fixing plate extends out from the strip opening and is fixed to the slide plate.

[0011] Preferably, a rotating cylinder is provided inside the collet for transverse rotation, a push rod is provided inside the rotating cylinder for transverse movement, the inner end of the push rod is movably extended out of the rotating cylinder, and the inner end of the push rod is in the shape of a pointed cone, an anti-slip plate is fixedly connected to the end of the push rod located inside the rotating cylinder, and a buffer spring is provided inside the rotating cylinder on one side of the anti-slip plate, an installation groove is provided on the outer side of the inner bottom surface of the rotating cylinder, and an infrared sensor for monitoring the movement of the anti-slip plate is provided inside the installation groove; a guide cover for the rod to pass through is movably attached to the inner end of the collet.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention facilitates the one-time turning operation of the rod to be turned from the head to the tail through the cooperation of the guide cylinder, the abutment assembly, the collet and the push rod, and can effectively avoid the occurrence of eccentricity and steps in the secondary turning of the polished rod; and can play the role of automatic centering of the head axis and the tail axis when the rod to be turned is processed, which can improve the compliance rate of the rod body after forming during the turning operation; at the same time, after the turning of the rod is completed, under the action of the push rod and the buffer spring, the rod body placed in the collet can be automatically ejected, which can improve the convenience of unloading after the polished rod is processed; and when the push rod and the buffer spring are inserted into the guide cylinder and abutted before the turning of the rod, the rigid collision of the rod body can be avoided, the impact force during movement can be buffered, and the buffer spring can be compressed and stored, so that after the processing is completed, the push rod can eject the processed rod out of the collet when it is quickly reset, effectively improving the efficiency and convenience of turning the rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0015] Figure 2 It is a schematic diagram of an isometric three-dimensional structure of the present invention;

[0016] Figure 3 It is a main structural sectional view of the present invention;

[0017] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the rear view of the present invention;

[0018] Figure 5 It is a schematic diagram of a partial three-dimensional structure of the front view of the present invention;

[0019] Figure 6 It is a three-dimensional structural schematic diagram of the polished rod turning state of the present invention;

[0020] Figure 7 It is a three-dimensional structural schematic diagram of the bare rod in the clamping state of the present invention;

[0021] Figure 8 It is a three-dimensional structural schematic diagram of the connection state of the fixing cylinder and the guide cylinder of the present invention;

[0022] Fig. 9 It is a schematic diagram of the three-dimensional structure of the collet and the ejector rod of the present invention;

[0023] Fig.10 It is a three-dimensional schematic diagram of the internal structure of the guide tube of the present invention;

[0024] Fig.11 It is a rear-view stereoscopic structural schematic diagram of the guide tube of the present invention;

[0025] Fig.12 It is a rear view structural cross-sectional view of the guide tube of the present invention;

[0026] Fig.13 It is a schematic diagram of the three-dimensional structure of the guide column and the cutter of the present invention;

[0027] Fig.14 It is a cross-sectional view of the guide column structure when viewed from above of the present invention;

[0028] Fig.15 It is a sectional view of the main structure of the rotating drum of the present invention.

[0029] Serial numbers in the figure: 1. base; 2. fixed seat; 3. movable seat; 4. guide column; 5. cutter; 6. turntable; 7. fixed cylinder; 8. guide cylinder; 9. collet; 10. guide cover; 11. receiving plate; 12. servo motor; 13. driven gear; 14. driving motor; 15. lead screw; 16. threaded cylinder; 17. abutment ring; 18. fixed shell; 19. push rod; 20. thrust spring; 21. rotating cylinder; 22. push rod; 23. buffer spring; 24. anti-slip convex strip; 25. screw; 26. driving motor. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Example: See Figures 1 to 15A turning device for polished rod processing and anti-eccentric core, comprising a base 1, a fixed seat 2 is provided on one side of the top surface of the base 1, a movable seat 3 is slidably provided on the other side of the top surface of the base 1, and a guide column 4 is transversely fixedly connected to the middle part of the inner side surface of the fixed seat 2; slide plates are slidably provided on the upper inclined surfaces of the front and rear ends of the guide column 4, and a cutter 5 is installed on the top of the slide plate, and an adjustment component for moving the cutter 5 is provided inside the guide column 4; a transverse movement cavity is opened in the bottom of the base 1, and a transverse movement component for moving the movable seat 3 is provided inside the transverse movement cavity; a turntable 6 is rotatably provided on the front and rear ends of the upper inner side surface of the fixed seat 2, a fixed cylinder 7 is fixedly connected to the inner side surface of the turntable 6, and a guide cylinder 8 for limiting the end of the polished rod is installed on the fixed cylinder 7, and the fixed cylinder 7 and the guide cylinder 8 are provided. Abutment components are provided inside the guide cylinder 8; turntables are rotatably provided at the front and rear ends of the upper inner side surface of the moving seat 3, and collets 9 with the same axis as the guide cylinder 8 are installed on the inner side surface of the turntable. A guide cover 10 for the rod to pass through is movably attached to the inner end of the collet 9, and a reduction motor for turntable driving is provided at the front and rear ends of the upper part of the moving seat 3; through the cooperation of the guide cylinder 8, the abutment component, the collet 9 and the push rod 22, it is convenient to perform a one-time turning operation from the head to the tail of the turned rod, which can effectively avoid the occurrence of eccentricity and steps in the secondary turning of the polished rod; and it can play the role of automatic centering of the head axis and the tail axis when the turned rod is processed, which can improve the compliance rate of the rod body after forming during the turning operation.

[0032] In the present invention, a guide opening is provided in the middle of the inner side surface of the movable seat 3 in cooperation with the guide column 4, a receiving plate 11 is fixedly connected to the bottom of the inner side surface of the movable seat 3 in the horizontal direction, and a through flat opening is provided in the bottom of the inner side surface of the fixed seat 2 in the horizontal direction for the receiving plate 11 to pass through; an installation cavity is provided in the upper part of the fixed seat 2, and a servo motor 12 is provided inside the installation cavity, and a driving gear is fixedly connected to the driving shaft of the servo motor 12, and a rotating shaft on the outer side surface of the turntable 6 is movably passed through the installation cavity and fixedly connected to a driven gear 13, and the driving gear is located between the two driven gears 13, and the driven gear 13 is meshed with the driving gear for transmission; through the cooperation of the servo motor 12 and the driving gear, it is convenient to make the two driven gears 13 rotate in opposite directions, and then the two turntables 6 also rotate in opposite directions, so that the two groups of structures for positioning the rods at the front and rear ends of the top of the base 1 can rotate in opposite directions, so that the two rod bodies turned at the same time are turned in different directions, thereby improving the stability of turning the rods.

[0033] In the present invention, the transverse movement assembly includes a lead screw 15 which is arranged in a transverse movement chamber and rotates transversely, a drive motor 14 which is arranged in a base 1 on one side of the transverse movement chamber, and a threaded barrel 16 which is movably sleeved on the lead screw 15. The drive shaft of the drive motor 14 is coaxially fixed to one end of the lead screw 15. A connecting plate is vertically fixed to the top of the threaded barrel 16. A rectangular strip is horizontally opened on the inner top surface of the transverse movement chamber. The top end of the connecting plate extends from the rectangular strip and is fixed to the bottom of the moving seat 3. The adjustment assembly includes a guide column 4 which is arranged in a transverse direction. The screw 25, the driving motor 26 arranged inside the inner end of the guide column 4 and the threaded tube sleeved on the screw 25, the driving shaft of the driving motor 26 is coaxially fixed to the inner end of the screw 25, the inclined surfaces on the upper parts of the front and rear end surfaces of the guide column 4 are horizontally provided with strip openings, the front and rear end of the top of the threaded tube are inclined and fixed with fixing plates, the outer end of the fixing plate extends out from the strip opening and is fixed to the slide plate; through the adjustment component, it is convenient to drive the cutter 5 to move horizontally on the guide column 4, and then perform turning operations on the outer wall of the rod body.

[0034] In the present invention, the abutment assembly includes an abutment ring 17 fixedly arranged inside the fixed cylinder 7 and the guide cylinder 8, a plurality of fixed shells 18 longitudinally fixedly connected to the peripheral side of the outer side surface of the abutment ring 17, and a push rod 19 longitudinally movably arranged inside each fixed shell 18, the inner end of the push rod 19 is movably penetrated to the outside of the inner side surface of the abutment ring 17; a thrust spring 20 is arranged inside the fixed shell 18, and the outer end of the push rod 19 is fixedly connected to the inner end of the thrust spring 20; a threaded groove is provided on the inner ring wall of the inner end of the fixed cylinder 7, an abutment groove is provided on the inner wall of the inner end of the guide cylinder 8, and a connecting ring matching the threaded groove is fixedly connected to the outer end of the guide cylinder 8; a plurality of anti-slip ridges 24 are equidistantly provided on the inner wall of the abutment groove of the guide cylinder 8, and the outer surface of the anti-slip ridges 24 is rough; the stability and anti-slip effect of guiding and limiting the rod head are improved.

[0035] In the present invention, a rotating cylinder 21 is provided inside the collet 9 for horizontal rotation, and a push rod 22 is provided inside the rotating cylinder 21 for horizontal movement. The inner end of the push rod 22 is movably extended out of the rotating cylinder 21, and the inner end of the push rod 22 is in the shape of a pointed cone. The end of the push rod 22 located inside the rotating cylinder 21 is fixedly connected with an anti-slip plate, and a buffer spring 23 is provided inside the rotating cylinder 21 on one side of the anti-slip plate. A mounting groove is provided on the outer side of the inner bottom surface of the rotating cylinder 21, and an infrared sensor for monitoring the movement of the anti-slip plate is provided inside the mounting groove. The provision of the infrared sensor facilitates the detection of the passage of the anti-slip plate, and the monitored object data can be transmitted to an external control device. After receiving the data transmitted by the infrared sensor, the external control device at this time sends a command to the drive motor 14 to stop rotating; thereby stopping the lateral movement component. The movement operation of the movable seat 3 is stopped, so as to achieve the effect of automatically stopping the movement of the movable seat 3 after the rod to be turned is clamped in place; at the same time, after the turning of the rod is completed, under the action of the push rod 22 and the buffer spring 23, the rod body placed in the collet 9 can be automatically ejected, which can improve the convenience of unloading after the polished rod is processed; and when the push rod 22 and the buffer spring 23 are inserted into and abutted against the inside of the guide cylinder 8 before the turning of the rod, the rigid collision of the rod body can be avoided, the impact force of the movement can be buffered, and the buffer spring 23 can be compressed and stored, so that after the processing is completed, the push rod 22 can eject the processed rod out of the collet 9 when it is quickly reset, effectively improving the efficiency and convenience of turning the rod.

[0036] Working principle: In this embodiment, the present invention also proposes a method for using a turning device for polished rod processing to prevent core deviation, comprising the following steps:

[0037] Step 1: First, the cutter 5, the servo motor 12, the reduction motor, the drive motor 14, and the drive motor 26 are electrically connected to the external control device through wires, and the infrared sensor is wirelessly connected to the external control device. Then, one end of the rod to be turned is inserted into the collet 9. The rods to be turned are placed in both collets 9. At this time, the tail end of the rod to be turned in the collet 9 is in an unclamped state;

[0038] Step 2, then start the driving motor 14 to drive the lead screw 15 to reverse, and the reverse rotation of the lead screw 15 makes it easy for the threaded barrel 16 to drive the movable seat 3 to move toward the fixed seat 2, and the other end of the rod to be turned held in the collet 9 is inserted into the abutment groove of the guide barrel 8, and the anti-slip convex strip 24 in the abutment groove is squeezed, and at the same time, the other end of the rod to be turned of different shapes will abut against the inner end of the push rod 19, and at this time, the multiple push rods 19 on the abutment ring 17 will have part of the rod body pressed back into the fixed shell 18, and then, under the action of the push rod 19, the head of the rod to be turned can be guided to the center of the axis, so that it is in the same axial position as the axis of the tail; and at this time, the other end of the rod to be turned abuts against the inner side surface of the abutment ring 17;

[0039] Step three, at the same time, one end of the rod to be turned located in the collet 9 will also be subjected to the reverse thrust to squeeze the push rod 22, thereby causing the push rod 22 to retract toward the inside of the rotating cylinder 21 and compressing the buffer spring 23, and when the anti-slip plate on the push rod 22 passes over the infrared sensor, the infrared sensor at this time will transmit the data of the object passing through to the external control device, and after the external control device receives the data transmitted by the infrared sensor, the external control device at this time will send a command to the drive motor 14 to stop rotating; thereby causing the transverse movement component to stop the movement operation of the moving seat 3, so as to achieve the effect of automatically stopping the movement after the rod to be turned is clamped in place;

[0040] Step 4, then adjust the collet 9 to clamp and fix one end of the rod to be turned, then start the reduction motor to drive the turntable and the collet 9 to rotate, so that the two collets 9 rotate in opposite directions, and then start the cutter 5 to make its cutter fit the outer wall of the rod to be turned, and then when the collet 9 drives the rod to be turned to rotate, the cutter 5 is driven to move horizontally by starting the adjustment component, so as to facilitate the turning operation on the outer wall of the rotating rod to be turned, and to facilitate the fixing of the end of the rod to be turned by the guide cylinder 8 when the rod to be turned is turned, and the collet 9 clamps the tail of the rod to be turned, so as to complete the turning operation from the head to the tail at one time during the production of the polished rod, and effectively avoid the phenomenon of eccentricity and steps in the secondary turning of the polished rod;

[0041] Step five, after the turning of the rod is completed, the transverse movement assembly is started to drive the moving seat 3 to move back. At this time, the head of the polished rod will be pushed out of the abutment groove of the guide cylinder 8, and then after the control collet 9 is controlled to release the support of the polished rod, the push rod 22 will be ejected from the inside of the rotating cylinder 21 under the action of the buffer spring 23, and then the turned polished rod will be automatically ejected out of the collet 9 through the ejected push rod 22 and fall into the receiving plate 11. There is no need for the operator to manually remove the processed polished rod from the collet 9, which improves the convenience of unloading the polished rod after processing.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A turning device for preventing core deviation in polished rod machining, comprising a base (1), characterized in that: A fixed seat (2) is provided on one side of the top surface of the base (1), a movable seat (3) is slidably provided on the other side of the top surface of the base (1), and a guide column (4) is transversely fixedly connected to the middle part of the inner side surface of the fixed seat (2); slide plates are slidably provided on the upper inclined surfaces of the front and rear ends of the guide column (4), and a cutter (5) is installed on the top of the slide plate, and an adjustment component for moving the cutter (5) is provided inside the guide column (4); a transverse movement cavity is opened in the bottom of the base (1), and a transverse movement component for moving the movable seat (3) is provided inside the transverse movement cavity; A turntable (6) is rotatably provided at the front and rear ends of the upper inner side surface of the fixed seat (2), a fixed cylinder (7) is fixedly connected to the inner side surface of the turntable (6), a guide cylinder (8) for limiting the end of the polished rod is installed on the fixed cylinder (7), and abutment components are provided inside the fixed cylinder (7) and the guide cylinder (8); a turntable is rotatably provided at the front and rear ends of the upper inner side surface of the movable seat (3), a collet (9) having the same axis as the guide cylinder (8) is installed on the inner side surface of the turntable, and a reduction motor for driving the turntable is provided at the front and rear ends of the upper part of the movable seat (3); The abutment assembly comprises an abutment ring (17) fixedly arranged inside the fixed cylinder (7) and the guide cylinder (8), a plurality of fixed shells (18) longitudinally fixedly connected to the outer side of the abutment ring (17), and a push rod (19) longitudinally movably arranged inside each fixed shell (18), wherein the inner end of the push rod (19) is movable and penetrates to the outside of the inner side of the abutment ring (17); a thrust spring (20) is arranged inside the fixed shell (18), and the outer end of the push rod (19) is fixedly connected to the inner end of the thrust spring (20); A thread groove is formed on the inner ring wall of the inner end of the fixed cylinder (7), an abutment groove is formed on the inner wall of the inner end of the guide cylinder (8), and a connecting ring matching the thread groove is fixedly connected to the outer end of the guide cylinder (8); a plurality of anti-slip convex strips (24) are equidistantly formed on the inner wall of the abutment groove of the guide cylinder (8), and the outer surface of the anti-slip convex strips (24) is rough; A rotating cylinder (21) is provided inside the collet (9) for transverse rotation, and a push rod (22) is provided inside the rotating cylinder (21) for transverse movement. The inner end of the push rod (22) is movably extended out of the rotating cylinder (21), and the inner end of the push rod (22) is in a pointed cone shape.

2. A turning device for polished rod machining to prevent core deviation according to claim 1, characterized in that: A guide opening is provided in the middle of the inner side surface of the movable seat (3) in cooperation with the guide column (4) and is penetrated transversely, a receiving plate (11) is transversely fixedly connected to the bottom of the inner side surface of the movable seat (3), and a through flat opening is provided transversely at the bottom of the inner side surface of the fixed seat (2) for the receiving plate (11) to pass through.

3. A turning device for polished rod machining to prevent core deviation according to claim 2, characterized in that: An installation cavity is provided in the upper part of the fixing seat (2), a servo motor (12) is provided inside the installation cavity, a driving gear is fixedly connected to the driving shaft of the servo motor (12), a rotating shaft on the outer surface of the rotating disk (6) movably penetrates into the installation cavity, and is fixedly connected to a driven gear (13), the driving gear is located between the two driven gears (13), and the driven gear (13) is meshed with the driving gear for transmission.

4. A turning device for polished rod machining to prevent core deviation according to claim 1, characterized in that: The transverse shift assembly includes a lead screw (15) which is arranged in a transversely rotatable manner inside a transverse shift chamber, a drive motor (14) which is arranged inside a base (1) on one side of the transverse shift chamber, and a threaded tube (16) which is movably sleeved on the lead screw (15), wherein the drive shaft of the drive motor (14) is coaxially fixedly connected to one end of the lead screw (15), a connecting plate is vertically fixedly connected to the top of the threaded tube (16), a rectangular strip opening is horizontally opened on the inner top surface of the transverse shift chamber, and the top end of the connecting plate extends from the rectangular strip opening and is fixedly connected to the bottom of the movable seat (3).

5. The turning device for preventing core deviation in polished rod machining according to claim 1, characterized in that: The adjustment assembly comprises a screw rod (25) arranged transversely inside the guide column (4), a drive motor (26) arranged inside the inner end of the guide column (4), and a threaded tube sleeved on the screw rod (25); a drive shaft of the drive motor (26) is coaxially fixedly connected to the inner end of the screw rod (25); inclined surfaces at the upper parts of the front and rear end surfaces of the guide column (4) are transversely provided with strip-shaped openings; the front and rear end surfaces of the top of the threaded tube are obliquely fixedly connected with fixing plates; the outer end of the fixing plate extends out from the strip-shaped opening and is fixedly connected to the slide plate.

6. A turning device for polished rod machining to prevent core deviation according to claim 1, characterized in that: The end of the push rod (22) located in the rotating cylinder (21) is fixedly connected to an anti-slip plate, and a buffer spring (23) is provided inside the rotating cylinder (21) on one side of the anti-slip plate. A mounting groove is provided on the outer side of the inner bottom surface of the rotating cylinder (21), and an infrared sensor for monitoring the movement of the anti-slip plate is provided inside the mounting groove; and a guide cover (10) for the rod to pass through is movably attached to the inner end of the cartridge (9).

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