A casing milling mechanism for packer casing processing
By using a combination of moving blocks, center-limiting blocks, and contact blocks to clamp the packer shell, adaptive flexible clamping is achieved, solving the problems of clamping instability and plastic deformation during processing, and improving processing accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BAODING DATONG CASTING & FORGING CO LTD
- Filing Date
- 2026-05-13
- Publication Date
- 2026-06-23
AI Technical Summary
In the prior art, it is difficult to achieve stable and reliable clamping of the irregular curved shell of the packer during the processing, resulting in low processing accuracy and finished product qualification rate, and easy to cause clamping damage and plastic deformation.
The system employs a combination of moving blocks, center-limiting blocks, and contact blocks for clamping. It achieves adaptive adjustment through tilting contact and floating characteristics. Combined with the auxiliary support of the synchronization component and centering plate, it forms a multi-point flexible clamping structure, avoiding plastic deformation caused by rigid contact and thermal expansion.
It improves the clamping stability and machining accuracy of packer housing processing, avoids clamping damage, and ensures the stability of the milling process and the integrity of the workpiece.
Smart Images
Figure CN122252995A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of housing milling technology, and more specifically to a housing milling mechanism for processing packer housings. Background Technology
[0002] As a key component of the intelligent manufacturing equipment industry, milling structures are crucial for packers, which are core downhole tools in oil and gas well operations. Packers typically have irregularly shaped curved shells with rough, irregular contours on their outer surfaces. The machining accuracy of the shell directly determines the packer's overall sealing performance, pressure-bearing capacity, and downhole service reliability. Precision milling of the outer circumference of the packer shell is a critical step in the shell machining process. The clamping stability during milling directly affects the workpiece's dimensional accuracy and the finished product's pass rate. However, for packer shells with varying curvatures and surface roughness, the clamping structure is either too loose to achieve stable and reliable positioning, or too tight, easily causing surface damage and plastic deformation. During milling, the hard contact and compression between the workpiece and the rigid clamping components can easily lead to localized stress concentration. Simultaneously, the cutting heat generated during milling causes the workpiece to expand, resulting in a sharp increase in clamping force. This makes it impossible to dynamically compensate for and adaptively adjust for continuous, minute positional shifts that occur in real-time during machining, further exacerbating surface damage and deformation, and reducing the workpiece's milling quality. Summary of the Invention
[0003] The purpose of this invention is to provide a housing milling mechanism for processing packer housings, in order to overcome the above-mentioned shortcomings in the technology.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a shell milling mechanism for processing packer shells, comprising a processing table and a milling frame, wherein a stabilizing component is installed at the top of the processing table, and the stabilizing component is in contact with the outside of the workpiece in an inclined manner; The stabilizing component includes several center-limiting blocks movably connected to the top of the processing table. Each center-limiting block has multiple moving blocks connected to one side. Each moving block has several abutting blocks movably connected to one side. The center-limiting blocks maintain an inclined wave-like contact with the workpiece through the moving blocks and abutting blocks. A floating component is provided between each abutting block and the moving block. The top of the processing table is equipped with a synchronization component, which is used to drive the centering block to move horizontally along the top of the processing table while orienting the workpiece inside the centering block to the clamping center. Each of the center-limiting blocks is provided with a displacement component at its top, and the displacement component is used to adjust the position between the moving block and the workpiece. The top of the processing table is provided with two symmetrical shifting components, which are used to support and limit the workpieces that are not clamped outside the center block.
[0005] Preferably, the floating assembly includes a concentric column installed between the abutment block and the multi-moving block, and the concentric column is used to adjust the angle of the abutment block along one side of the multi-moving block; The multi-moving block has two symmetrical concentric slots on one side, and a return spring is fixedly connected inside each of the two concentric slots. One end of each return spring extends to the outside of the concentric slot and remains connected to one side of the contact block. The contact block maintains self-adaptation with the multi-moving block through the return spring.
[0006] Preferably, the synchronization component includes a synchronization disk movably connected to the top of the processing table and a synchronization rod fixedly connected to the bottom of the limiting block. The top of the synchronization disk is provided with an arc-shaped groove for guiding the movement of the synchronization rod. A servo motor is fixedly connected inside the processing table, and the servo motor is used to drive the synchronization disk to rotate. The top of the processing table is fixedly connected to a guide rail, and the side of the center-limiting block away from the synchronizing rod is fixedly connected to a movable seat, and the center-limiting block moves stably along the top of the processing table through the movable seat. The synchronization disk is equipped with a centering component, which is used to abut the workpiece against the outside.
[0007] Preferably, the centering assembly includes a centering disk installed at the center of the synchronization disk and a friction groove formed at the top of the centering disk for the workpiece to be inserted, and the friction groove is designed as a triangular structure. The friction groove is internally connected to several rocker arms, and each rocker arm has a rubber ring at the opening of the friction groove. The rubber ring is flared. The rocker arm and the interior of the friction groove are connected to a limiting post, which allows the rocker arm to swing stably. The end of the rocker arm near the workpiece is fixedly connected to an arc stabilizing block, which is arc-shaped.
[0008] Preferably, the displacement assembly includes a displacement groove formed on one side of the centering block for guiding the movement of the multi-moving block. A lead screw is installed inside the displacement groove, and a torsion shaft is fixedly connected inside the displacement groove. The top end of the torsion shaft is connected to the bottom of the lead screw, and one end of the lead screw extends to the outside of the centering block and is fixedly connected to a rotating handle. The moving block is fixedly connected to a movable block on one side inside the displacement groove. The movable block is screwed onto the outside of the lead screw, and the outside of the movable block is in contact with the inside of the displacement groove.
[0009] Preferably, each of the transposition components includes a fixed cylinder mounted on the top of the processing table and a crossbar mounted on one end of the fixed cylinder, and one end of the crossbar is in contact with the outside of the workpiece. The end of the crossbar away from the fixed cylinder is fixedly connected to a horizontal abutment block, and one end of the horizontal abutment block is fixedly connected to an abutment tiger's mouth, which is designed as an elliptical structure. The fixed cylinder is equipped with an interactive component on its exterior, and the interactive component works in coordination with the horizontal stop block.
[0010] Preferably, the interactive component includes two auxiliary horizontal plates movably connected to one end of the fixed cylinder, and the two auxiliary horizontal plates are symmetrically arranged at one end of the fixed cylinder. Each of the auxiliary horizontal plates is fixedly connected to an auxiliary abutment plate at one end. The interior of the fixed cylinder is provided with a multi-dimensional component that drives the two auxiliary horizontal plates to move interactively.
[0011] Preferably, the multidimensional component includes a rotating column movably connected inside the fixed cylinder and a first semi-circular groove and a second semi-circular groove formed outside the rotating column, and two auxiliary horizontal plates are respectively located inside the first semi-circular groove and the second semi-circular groove. The rotating column has a first side groove and a second side groove that are the same as those inside the first semi-circular groove and the second semi-circular groove. A power motor is fixedly connected inside the fixed cylinder, and the power motor is used to drive the rotating column to rotate.
[0012] The technical effects and advantages provided by the present invention in the above technical solution are as follows: 1. This invention, through the arrangement of multiple moving blocks, center-limiting blocks, and abutment blocks, uses the center-limiting blocks to provide a macroscopic positioning reference surface for the clamping structure. The inclined multiple moving blocks form a microscopic discrete contact array, and each abutment block has a small degree of freedom of swinging around its own fulcrum. When the center-limiting block and multiple moving blocks approach the workpiece surface, each abutment block can independently and adaptively deflect according to the local curvature difference of the workpiece surface until its inclined end face forms a multi-point line contact or micro-surface contact with the rough outer contour of the workpiece. This abandons the single rigid plane contact method. At the same time, the bottom of the multiple moving blocks maintains rigid contact with the workpiece, realizing fractal topology adaptive adaptation of the clamping contact area. This makes the clamping adjustment of the workpiece in the early stage of milling more flexible and flexible. Furthermore, it can convert the axial cutting force impact generated during the workpiece milling process into axial component force through each discrete abutment block and absorb it by relying on the friction margin, effectively suppressing the axial movement of the workpiece and ensuring the stability of the clamping reference. 2. Through the setting of the abutment block, return spring and multi-moving block, there is a directional differential fit gap between the inclined abutment block and the multi-moving block. When the workpiece is thermally expanded due to the heat generated during the milling operation, the workpiece can push the abutment block to move backward along the inclined surface. This displacement trajectory causes the abutment block to slide relative to the multi-moving block in a directional manner. Moreover, the sliding direction of each abutment block is uniquely defined by its own inclination. Under the synergistic effect of multiple sets of structures, the center of the limiting block can always maintain the centering tendency with the geometric center of the workpiece after thermal expansion, effectively avoiding the sudden increase of clamping force after the workpiece is thermally expanded, and preventing the workpiece from plastic deformation and scratching the machined surface of the workpiece due to excessive clamping. 3. By setting up the synchronization components and taking advantage of the floating characteristics of the contact blocks, the extension length and swing angle of the blocks relative to the center block can be adaptively adjusted according to the actual position of the workpiece surface. Even if there are slight assembly or running deviations in the overall position of the center block, it can still ensure that the end faces of each contact block are in close contact with the workpiece surface. The center block does not need to be forcibly rigidly displaced. Based on the overall synchronous clamping motion, it can achieve small independent displacement adaptive correction according to the force feedback, making the clamping force distribution of the four clamping areas more uniform and balanced, and maintaining a stable and reliable clamping state throughout the process. 4. Through the setting of the positioning component, the contact mouth of the transverse block end adopts an elliptical structure with a gradually changing radius of curvature along the long axis and the edge is processed by rounded transition to form a smooth curved surface. Before the workpiece enters the clamping area of the center block, the outer wall of the workpiece first contacts the low curvature area of the elliptical arc surface of the contact mouth. As the clamping component feeds centripetally, relying on the continuously changing curvature characteristics of the elliptical arc surface, the outer wall of the workpiece is smoothly guided to the center position facing the center block and the inclined end face of each contact block, ensuring the spatial posture stability of the workpiece during the feeding and alignment process and avoiding workpiece skew and displacement. 5. Through the setting of auxiliary horizontal plate, crossbar and rotating column, the reciprocating extension and retraction of the auxiliary horizontal plate can enable the radial constraint position of the crossbar and auxiliary support plate on the workpiece to be periodically switched. When the upper auxiliary horizontal plate extends and cooperates with the crossbar to form a double-point clamping, the lower auxiliary horizontal plate retracts synchronously and releases the corresponding clamping area. The workpiece is mainly subjected to circumferential force by the force couple system formed by the upper elliptical arc surface and the auxiliary horizontal plate. The alternating action of the auxiliary support plate can dynamically adjust the lateral auxiliary support point position, effectively solving the problems of geometric over-constraint, local stress concentration and workpiece clamping deformation that are easy to occur in rigid multi-point clamping. 6. Through the setting of centering plate, arc stabilizer and center limiting block, the radial force generated by the expansion and contraction deformation of the arc stabilizer inside the centering plate is distributed in a gradient along the workpiece axis. The force is larger near the end of the centering plate and gradually decreases away from the end. At the same time, the clamping force applied by the center limiting block can form a local pressure area in the circumference of the workpiece. During the milling process of the workpiece, the centering plate can provide additional radial auxiliary support constraint. The multiple clamping support structures work together to further and significantly improve the overall clamping rigidity of the workpiece and the stability of milling. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0014] Figure 1 This is a schematic diagram of the overall structure of the processing table of the present invention; Figure 2 This is a schematic diagram of the structure of the core-limiting block of the present invention; Figure 3 This is a schematic diagram of the structure of the multi-moving block of the present invention; Figure 4 This is a schematic diagram of the structure of the contact block of the present invention; Figure 5 This is a schematic diagram of the centering disk of the present invention; Figure 6 This is a schematic diagram of the crossbar structure of the present invention; Figure 7 This is a schematic diagram of the rotating column of the present invention; Figure 8 This is a schematic diagram of the structure of the first side groove of the present invention.
[0015] Explanation of reference numerals in the attached figures: 1. Machining table; 11. Milling machine frame; 2. Stabilizing component; 21. Limiting block; 22. Multi-moving block; 23. Abutting block; 24. Concentric shaft; 25. Return spring; 26. Concentric groove; 3. Synchronization component; 31. Synchronization disk; 32. Arc groove; 33. Synchronization rod; 34. Moving base; 35. Guide rail; 36. Servo motor; 4. Displacement assembly; 41. Displacement groove; 42. Lead screw; 43. Torsion shaft; 44. Moving block; 45. Rotary handle; 5. Centering component; 51. Centering disc; 52. Friction groove; 53. Arc stabilizer block; 54. Rocker arm; 55. Limiting post; 56. Rubber ring opening; 6. Repositioning assembly; 61. Fixed cylinder; 62. Rotating column; 63. Crossbar; 64. Horizontal stop block; 65. Abutting tiger's mouth; 66. Auxiliary horizontal plate; 67. Auxiliary stop plate; 68. First semi-circular groove; 69. First side groove; 601. Second semi-circular groove; 602. Second side groove; 603. Power motor. Detailed Implementation
[0016] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.
[0017] This invention provides, for example Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The shown is a housing milling mechanism for processing packer housings, including a processing table 1 and a milling frame 11. A stabilizing component 2 is installed on the top of the processing table 1, and the stabilizing component 2 is in contact with the outside of the workpiece in an inclined position. The stabilizing component 2 includes several center-limiting blocks 21 movably connected to the top of the processing table 1. Each center-limiting block 21 has a multi-moving block 22 connected to one side. Several abutting blocks 23 are movably connected to one side of the multi-moving block 22. The center-limiting block 21 maintains an inclined dotted contact with the workpiece through the multi-moving block 22 and the abutting block 23. A floating component is provided between each abutting block 23 and the multi-moving block 22. The floating assembly includes a concentric column 24 installed between the abutment block 23 and the multi-moving block 22, and the concentric column 24 is used to adjust the angle of the abutment block 23 along one side of the multi-moving block 22; Two symmetrical concentric slots 26 are provided on one side of the multi-moving block 22, and a return spring 25 is fixedly connected inside each of the two concentric slots 26. One end of each return spring 25 extends to the outside of the concentric slot 26 and is connected to one side of the abutment block 23. The abutment block 23 maintains self-adaptability with the multi-moving block 22 through the return spring 25. The top of the processing table 1 is provided with a synchronization component 3, which is used to drive the center block 21 to move horizontally along the top of the processing table 1 while orienting the workpiece in the center block 21 to the clamping center. The synchronization component 3 includes a synchronization disk 31 movably connected to the top of the processing table 1 and a synchronization rod 33 fixedly connected to the bottom of the center block 21. The top of the synchronization disk 31 is provided with an arc-shaped groove 32 for guiding the movement of the synchronization rod 33. A servo motor 36 is fixedly connected inside the processing table 1 and is used to drive the synchronization disk 31 to rotate. A guide rail 35 is fixedly connected to the top of the processing table 1, and a movable seat 34 is fixedly connected to the side of the limiting block 21 away from the synchronous rod 33, and the limiting block 21 moves stably along the top of the processing table 1 through the movable seat 34. The synchronous disk 31 is equipped with a centering component 5, which is used to abut the workpiece externally. The centering assembly 5 includes a centering disk 51 installed at the center of the synchronization disk 31 and a friction groove 52 opened at the top of the centering disk 51 for the workpiece to be inserted, and the friction groove 52 is designed as a triangular structure. Several rocker arms 54 are movably connected inside the friction groove 52, and a rubber ring 56 is installed at the opening of the friction groove 52 on the outside of each rocker arm 54. The rubber ring 56 is flared. A limiting post 55 is connected to the inside of the friction groove 52. The limiting post 55 can make the rocker arm 54 swing stably. An arc stabilizing block 53 is fixedly connected to the end of the rocker arm 54 near the workpiece. The arc stabilizing block 53 is arc-shaped. Furthermore, the specific number of the contact blocks 23 is four, and the four contact blocks 23 are arranged around the top of the processing table 1. The contact blocks 23 are designed as L-structures. Moreover, the specific number of the displacement components 4 is the same as that of the contact blocks 23, and they are matched with each other.
[0018] refer to Figure 2 and Figure 3 As shown, each center-limiting block 21 is provided with a displacement component 4 at its top, and the displacement component 4 is used to adjust the position between the moving block 22 and the workpiece. The displacement component 4 includes a displacement groove 41 opened on one side of the center-limiting block 21 for guiding the moving block 22 to move. A lead screw 42 is installed inside the displacement groove 41. A torsion shaft 43 is fixedly connected inside the displacement groove 41, and the top end of the torsion shaft 43 is connected to the bottom of the lead screw 42. One end of the lead screw 42 extends to the outside of the center-limiting block 21 and is fixedly connected to a rotating handle 45. The moving block 22 is located inside the displacement groove 41 and is fixedly connected to a moving block 44. The moving block 44 is screwed onto the outside of the lead screw 42, and the outside of the moving block 44 is in contact with the inside of the displacement groove 41. Furthermore, the thread shape of the outside of the lead screw 42 is trapezoidal or triangular, so that after the lead screw 42 stops rotating, the outside of the lead screw 42 and the nut inside the limiting block 21 remain stationary and will not slide down or back on their own, thus completing self-locking.
[0019] refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the top of the processing table 1 is provided with two symmetrical shifting components 6, and the shifting components 6 are used to support and limit the workpiece that is not clamped outside the center block 21; each shifting component 6 includes a fixed cylinder 61 installed on the top of the processing table 1 and a crossbar 63 installed on one end of the fixed cylinder 61, and one end of the crossbar 63 is in contact with the outside of the workpiece. A horizontal abutment block 64 is fixedly connected to one end of the horizontal bar 63 away from the fixed cylinder 61, and an abutment tiger mouth 65 is fixedly connected to one end of the horizontal abutment block 64, and the abutment tiger mouth 65 is designed as an elliptical structure. An interactive component is provided on the outside of the fixed cylinder 61, and the interactive component cooperates with the horizontal stop block 64. The interactive component includes two auxiliary horizontal plates 66 that are movably connected to one end of the fixed cylinder 61, and the two auxiliary horizontal plates 66 are symmetrically arranged at one end of the fixed cylinder 61. Each auxiliary horizontal plate 66 is fixedly connected to one end of an auxiliary abutment plate 67. The interior of the fixed cylinder 61 is provided with a multi-dimensional component that drives the two auxiliary horizontal plates 66 to move interactively. The multidimensional component includes a rotating column 62 movably connected inside the fixed cylinder 61 and a first semi-circular groove 68 and a second semi-circular groove 601 opened outside the rotating column 62. Two auxiliary horizontal plates 66 are respectively located inside the first semi-circular groove 68 and the second semi-circular groove 601. The rotating column 62 has a first side groove 69 and a second side groove 602 that are the same as those inside the first semi-circular groove 68 and the second semi-circular groove 601. A power motor 603 is fixedly connected inside the fixed cylinder 61, and the power motor 603 is used to drive the rotating column 62 to rotate.
[0020] Working principle: When using: refer to Figure 2 and Figure 3 As shown, when milling is required on the workpiece; First, when adjusting the relative position of the moving block 22 and the limiting block 21, the contact position between the moving block 22 and the workpiece changes synchronously. Utilizing the same tooth profile (such as trapezoidal, rectangular, or triangular) for the external thread of the lead screw 42 and the internal thread of the moving block 44, they mesh and drive each other in the axial section. Rotating the handle 45 causes the lead screw 42 and the limiting block 21 to form a helical transmission engagement. As the handle 45 continues to rotate, the lead screw 42 rotates along the displacement groove 41. The threaded inclined surface on the outer side of the lead screw 42 pushes against the threaded inclined surface on the inner side of the moving block 44, driving the moving block 44 to move linearly along the displacement groove 41. During the displacement process, the moving block 44 guides the moving block 22 to slide along the displacement groove 41, thereby achieving staggered position adjustment between the moving block 22 and the limiting block 21. The clamping distance can be flexibly adjusted according to the specifications of the workpiece to be processed, expanding the adaptability of the device to the processing range. refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, next, the workpiece is inserted into the inner area of the four contact blocks 23. During insertion, the outer wall of the workpiece first contacts the horizontal contact block 64. A smooth transition arc surface is formed at the corner of the contact tiger's mouth 65. Before the workpiece is clamped and fixed, the outer wall first contacts the low curvature area of the arc surface of the contact tiger's mouth 65. Relying on the continuously changing curvature characteristics of the elliptical arc surface of the contact tiger's mouth 65, the outer wall of the workpiece is smoothly guided to the center position facing the inclined surface of the contact block 23 and the multi-moving block 22. This ensures that the horizontal contact block 64 and the contact tiger's mouth 65 maintain a stable spatial posture throughout the entire contact process with the workpiece, achieving smooth guidance during the workpiece feeding stage and avoiding workpiece tilting or deviation. Next, the contact positions of the crossbar 63 and the single-sided auxiliary crossbar 66 with the workpiece need to be switched. Simultaneously, when the contact points of the horizontal abutment block 64 and the single-sided auxiliary abutment plate 67 with the workpiece are changed, the power motor 603 starts driving, causing the rotating column 62 to rotate synchronously inside the fixed cylinder 61. The first semi-arc groove 68 and the second semi-arc groove 601 rotate synchronously with the rotating column 62, and their inner walls slide against the bottom ends of the two auxiliary crossbars 66 respectively. As the first semi-arc groove 68 and the second semi-arc groove 601 continue to rotate, the inner walls of the grooves abut against and push against the two auxiliary crossbars 66, causing the two auxiliary crossbars 66 to move along the first side groove 69 respectively. The second side groove 602 slides inside and moves horizontally and alternately towards each other inside the fixed cylinder 61; the two auxiliary horizontal plates 66 change their own posture according to the position of the groove, and at the same time, they exchange positions on the upper and lower sides of the crossbar 63, so that one set of auxiliary horizontal plates 66 drives the end auxiliary abutment plate 67 to form a matching fit with the horizontal abutment block 64, and the other set of auxiliary horizontal plates 66 drives the end auxiliary abutment plate 67 to retract and be stored on one side of the crossbar 63; finally, the horizontal abutment block 64 and each auxiliary abutment plate 67 are dynamically adapted and adjusted for multiple contact points on the outer periphery of the workpiece, forming a multi-contact geometrically compatible clamping structure, which can adapt to workpieces with different outer diameter contours and disperse clamping stress; refer to Figure 2 , Figure 3 and Figure 5 As shown, finally, after the workpiece is smoothly guided to the position facing the inclined surface of the contact block 23 and the multi-moving block 22, the end of the workpiece extends into the friction groove 52, and the arc stabilizing block 53 then makes close contact with the outer wall of the workpiece; the servo motor 36 starts driving, and its output end drives the synchronous disk 31 to rotate along the top of the processing table 1. The rotation of the synchronous disk 31 synchronously drives the arc groove 32 to move synchronously; during the operation of the synchronous disk 31, the centering disk 51 rotates synchronously, and the friction groove 52 drives the arc stabilizing block 53 to make a circular motion along the outer wall of the workpiece; during the circular motion of the arc stabilizing block 53, the contact point with the outer wall of the workpiece continuously changes, and drives the rocker arm 54. The rocker arm 54 swings back and forth inside the friction groove 52. The rubber ring 56 limits the swing amplitude of the rocker arm 54, so that the outer side of the rocker arm 54 and the opening of the friction groove 52 always maintain a reasonable floating gap. At the same time, the rocker arm 54 drives the limiting column 55 to move inside the friction groove 52 during the swing. Relying on the linkage limiting effect of the rocker arm 54 and the limiting column 55, the arc stabilizing block 53 swings stably and controlledly inside the friction groove 52. The arc stabilizing block 53 generates a stable friction force with the contact surface of the workpiece and forms a tight contact constraint, realizing the floating self-centering limit of the axial positioning reference of the workpiece, effectively suppressing the axial movement and circumferential displacement of the workpiece. refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, during the rotation of the synchronous disc 31, the arc-shaped groove 32 moves in a circular motion. The inner wall of the groove abuts against the outer side of the synchronous rod 33, pushing the synchronous rod 33 to slide along the inside of the arc-shaped groove 32. The displacement of the synchronous rod 33 then drives the center-limiting block 21 to move towards the outer side of the workpiece. During the movement of the center-limiting block 21, it drives the moving seat 34 to slide smoothly along the outer side of the guide rail 35, ensuring that the center-limiting block 21 moves smoothly and without deviation along the top of the processing table 1. The displacement of the center-limiting block 21 synchronously drives the multi-moving block 22 and the abutting block 23 on the outer side of the center-limiting block 21 towards the workpiece. The outer walls move closer together, causing the multi-moving block 22 and the contact block 23 to form an inclined clamping contact with the outer wall of the workpiece. The multi-moving block 22 forms multi-point floating contact with the workpiece through the contact block 23, and the contact block 23 itself also forms multi-point tight contact with the outer wall of the workpiece. With the help of the inclined geometric structure of the contact block 23 and the multi-moving block 22, the clamping force applied by the centering block 21 to the radial direction of the workpiece is decomposed into an axial component parallel to the axis of the workpiece, resulting in a more uniform force distribution. After the contact block 23 contacts and squeezes the workpiece, it generates a reaction force that acts on the return spring 25. 5. Located between the concentric groove 26 and the abutment block 23, it generates adaptive elastic expansion and contraction. Relying on its own elastic rebound force, it acts in the opposite direction on the abutment block 23, keeping the abutment block 23 in close and stable contact with the outer wall of the workpiece. The abutment block 23 forms an elastic self-stress clamp through the return spring 25, providing a stable and reliable macroscopic positioning reference for the centering block 21. Each abutment block 23 has a small adaptive swing freedom around its own fulcrum. When the centering block 21 approaches the curved surface contour of the workpiece, each abutment block 23 can independently and adaptively deflect according to the local curvature difference of the workpiece surface. The rotation continues until its inclined end face forms multi-point line contact or micro-surface contact with the rough outer contour of the workpiece; ultimately, the contact block 23 maintains stable contact clamping with the outer wall of the workpiece throughout the entire range. Under the synergistic effect of the contact block 23, the centering block 21 forms a non-single rigid planar composite contact constraint with the workpiece, which has strong clamping self-adaptation capability and can adapt to the clamping of irregular curved workpieces, effectively avoiding workpiece surface damage caused by rigid hard clamping. At the same time, the composite multi-point clamping combined with the floating centering structure greatly improves the clamping stability and machining accuracy of the entire workpiece milling process.
[0021] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A milling mechanism for processing packer housings, comprising a processing table (1) and a milling frame (11), characterized in that: The top of the processing table (1) is equipped with a stabilizing component (2), and the stabilizing component (2) is in contact with the outside of the workpiece in an inclined manner. The stabilizing component (2) includes several center-limiting blocks (21) movably connected to the top of the processing table (1). Each center-limiting block (21) has a multi-moving block (22) connected to one side. Each multi-moving block (22) has several abutting blocks (23) movably connected to one side. The center-limiting block (21) maintains an inclined dotted contact with the workpiece through the multi-moving block (22) and the abutting block (23). A floating component is provided between each abutting block (23) and the multi-moving block (22). The top of the processing table (1) is provided with a synchronization component (3), and the synchronization component (3) is used to drive the center block (21) to move horizontally along the top of the processing table (1) while orienting the workpiece in the center block (21) to the clamping center. Each of the center-limiting blocks (21) is provided with a displacement component (4) at its top end, and the displacement component (4) is used to adjust the position between the moving block (22) and the workpiece; The top of the processing table (1) is provided with two symmetrical shifting components (6), and the shifting components (6) are used to support and limit the workpieces that are not clamped outside the center block (21).
2. The housing milling mechanism for packer housing processing according to claim 1, characterized in that: The floating assembly includes a concentric column (24) installed between the abutment block (23) and the multi-moving block (22), and the concentric column (24) is used to adjust the angle of the abutment block (23) along one side of the multi-moving block (22); Two symmetrical concentric slots (26) are provided on one side of the multi-moving block (22), and a return spring (25) is fixedly connected inside the two concentric slots (26). One end of each return spring (25) extends to the outside of the concentric slot (26) and is connected to one side of the abutment block (23). The abutment block (23) maintains self-adaptability with the multi-moving block (22) through the return spring (25).
3. A housing milling mechanism for processing packer housings according to claim 1, characterized in that: The synchronization component (3) includes a synchronization disk (31) movably connected to the top of the processing table (1) and a synchronization rod (33) fixedly connected to the bottom of the limiting block (21). The top of the synchronization disk (31) is provided with an arc-shaped groove (32) for guiding the synchronization rod (33) to move. A servo motor (36) is fixedly connected inside the processing table (1), and the servo motor (36) is used to drive the synchronization disk (31) to rotate. The top of the processing table (1) is fixedly connected to a guide rail (35), and the side of the limiting block (21) away from the synchronizing rod (33) is fixedly connected to a moving seat (34), and the limiting block (21) moves stably along the top of the processing table (1) through the moving seat (34). The synchronization disk (31) is equipped with a centering component (5), and the centering component (5) is used to abut the workpiece from the outside.
4. A housing milling mechanism for processing packer housings according to claim 3, characterized in that: The centering component (5) includes a centering disk (51) installed at the center of the synchronization disk (31) and a friction groove (52) opened at the top of the centering disk (51) for the workpiece to be inserted, and the friction groove (52) is set as a triangular structure; The friction groove (52) is internally connected to several rocker arms (54), and each rocker arm (54) has a rubber ring (56) installed at the opening of the friction groove (52) on its exterior and inside. The rubber ring (56) is flared. The rocker arm (54) and the interior of the friction groove (52) are connected to a limiting post (55), and the limiting post (55) can make the rocker arm (54) swing stably. The end of the rocker arm (54) near the workpiece is fixedly connected to an arc stabilizing block (53), and the arc stabilizing block (53) is an arc-shaped structure.
5. A housing milling mechanism for processing packer housings according to claim 1, characterized in that: The displacement assembly (4) includes a displacement groove (41) opened on one side of the centering block (21) for guiding the movement of the multi-moving block (22). A lead screw (42) is installed inside the displacement groove (41). A torsion shaft (43) is fixedly connected inside the displacement groove (41), and the top end of the torsion shaft (43) is connected to the bottom of the lead screw (42). One end of the lead screw (42) extends to the outside of the centering block (21) and is fixedly connected to a rotating handle (45). The moving block (22) is fixedly connected to a moving block (44) on one side inside the displacement groove (41). The moving block (44) is screwed onto the outside of the lead screw (42), and the outside of the moving block (44) is in contact with the inside of the displacement groove (41).
6. A housing milling mechanism for processing packer housings according to claim 1, characterized in that: Each of the transposition components (6) includes a fixed cylinder (61) installed on the top of the processing table (1) and a crossbar (63) installed on one end of the fixed cylinder (61), and one end of the crossbar (63) is in contact with the outside of the workpiece. The end of the crossbar (63) away from the fixed cylinder (61) is fixedly connected to a horizontal abutment block (64), and the end of the horizontal abutment block (64) is fixedly connected to an abutment tiger mouth (65), and the abutment tiger mouth (65) is set as an elliptical structure. The fixed cylinder (61) is provided with an interactive component on its exterior, and the interactive component cooperates with the horizontal block (64).
7. A housing milling mechanism for processing packer housings according to claim 6, characterized in that: The interactive component includes two auxiliary horizontal plates (66) movably connected to one end of the fixed cylinder (61), and the two auxiliary horizontal plates (66) are symmetrically arranged at one end of the fixed cylinder (61). Each of the auxiliary horizontal plates (66) is fixedly connected to an auxiliary abutment plate (67) at one end. The interior of the fixed cylinder (61) is provided with a multi-dimensional component that drives the two auxiliary horizontal plates (66) to move interactively.
8. A housing milling mechanism for processing packer housings according to claim 7, characterized in that: The multidimensional component includes a rotating column (62) movably connected inside the fixed cylinder (61) and a first semi-circular groove (68) and a second semi-circular groove (601) opened outside the rotating column (62), and two auxiliary horizontal plates (66) are respectively located inside the first semi-circular groove (68) and the second semi-circular groove (601). The rotating column (62) has a first side groove (69) and a second side groove (602) that are the same as those inside the first semi-circular groove (68) and the second semi-circular groove (601) on its outside. The fixed cylinder (61) is internally connected to a power motor (603), and the power motor (603) is used to drive the rotating column (62) to rotate.