A precision core rod processing device

Abstract

The present invention belongs to the technical field of core rod processing and grinding devices, specifically a precision core rod processing device, including a device frame, a lifting and rotating part and a movable grinding component. A middle clamping groove is provided on the top of the device frame, and the core rod body is inserted into the middle clamping groove. The clamping rotating part includes a fixed outer ring and an inner rotating ring. A plurality of adaptive clamping parts are movably installed inside the inner rotating ring. When the lower end of the core rod body is clamped by the lifting and rotating part, the outer side of the upper half of the core rod body is ground. When the lower half of the core rod body is subsequently ground, the outer side of the top end of the core rod body is clamped by the clamping rotating part. As the clamping rotating part drives the core rod body to rise and rotate, it cooperates with the movable grinding component to complete the grinding. At this time, the upper half of the core rod body has been ground, and the surface is smoother and flatter. The clamping here will be more firm, and the clamping force distribution will be more uniform, which can reduce vibration and deformation during the processing.

Description

Technical Field

[0001] The invention belongs to the field of core rod processing and polishing devices, in particular to a precision core rod processing device. Background Art

[0002] In order to avoid affecting the dimensional accuracy and surface quality of the core rod, it is necessary to remove surface defects of the core rod, improve surface roughness, reduce friction coefficient and enhance surface hardness and wear resistance. Therefore, the core rod needs to be polished during the processing. Polishing the core rod can remove burrs, scratches, oxide scale, and remove the soft layer on the surface, making the core rod more stable and reliable when subjected to pressure and friction, and improving its overall performance and fatigue resistance.

[0003] A patent document with publication number CN115139164B discloses a high-precision core rod processing device and processing method, including a workbench, a support column, a fixed plate and an electric telescopic rod. The electric telescopic rod is rotatably connected to a push plate through a piston rod and a rotating shaft. The upper end face of the workbench is fixedly connected to a fixed column, the upper end face of the fixed column is fixedly connected to a fixed plate, and the upper end face of the fixed plate is symmetrically fixedly connected to fixed blocks at the left and right edges of the upper end face of the fixed plate. The internal thread of the fixed block is connected to a bolt rod, and the threaded rods are rotatably connected to a U-shaped support block through bearings on the surfaces close to each other.

[0004] In the traditional core rod grinding process, two types of grinding devices are usually used: horizontal grinding devices and vertical grinding devices. Compared with the horizontal device, the vertical grinding device has a significant space advantage. It occupies a smaller area and the debris falling range is limited, which is convenient for centralized collection and treatment, effectively reducing the pollution and cleaning difficulty of the working environment. However, the traditional vertical grinding device has some limitations in practical application. During the grinding process, the vertical device usually clamps the original position of the core rod throughout the whole process, and the clamping position remains fixed. This results in that after completing the grinding of a part of the area, if the remaining part needs to be ground, the clamping position must be readjusted or the fixture must be replaced. This process not only increases the complexity of the operation, but may also cause processing errors due to changes in the clamping position. More importantly, during the operation of the vertical grinding device, the distance between the clamping position and the grinding position will become closer and closer. The close distance between the two will cause the vibration frequency generated during the grinding process to be close to the natural frequency of the clamping component, thereby causing resonance. The resonance phenomenon will significantly increase the vibration amplitude of the clamping component, thereby intensifying the vibration of the entire grinding process. The intensification of this vibration will not only reduce the processing accuracy, but may also cause uneven scratches or damage on the processed surface, affecting the final quality of the core rod.

[0005] To this end, the present invention provides a precision core rod processing device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: a precision core rod processing device according to the present invention comprises a device frame, a lifting and rotating member is movably installed inside the device frame, two oppositely arranged movable grinding components are movably installed above the device frame, a middle clamping groove is opened through the top of the device frame, a core rod body is inserted into the middle clamping groove, and the end of the core rod body is inserted into the lifting and rotating member, two lifting frames are movably installed above the device frame, and a clamping rotating member is fixedly installed between the two lifting frames;

[0008] The clamping rotating member includes a fixed outer ring and an inner rotating ring rotatably installed inside the fixed outer ring. A plurality of adaptive clamping members are movably installed inside the inner rotating ring. The plurality of adaptive clamping members are evenly distributed inside the inner rotating ring. A driving member is installed on the outer side of the fixed outer ring. The driving member is used to drive the inner rotating ring to rotate inside the fixed outer ring.

[0009] Preferably, the lifting frame includes a fixed block above the device frame and a telescopic rod fixedly installed below the fixed block, a lower end of the telescopic rod is connected to the fixed block above the device frame, and the fixed block has two connecting blocks fixedly installed on the side facing the clamping rotating part, and one end of the connecting block is fixedly connected to the fixed outer ring.

[0010] Preferably, the lifting and rotating member includes a bottom motor fixedly installed inside the lower part of the device frame and a rotating component installed in the middle of the lifting and rotating member, the rotating component is located directly above the bottom motor, an outer fixed plate is fixedly installed on the outer side of the rotating component, and a plurality of telescopic rods 2 are fixedly installed below the outer fixed plate, and the lower ends of the plurality of telescopic rods 2 are installed inside the device frame.

[0011] Preferably, the rotating component includes a fixed cylinder and an inner rotating cylinder movably installed inside the fixed cylinder, the upper outer side of the fixed cylinder is fixedly connected to the outer fixed plate, the lower outer side of the fixed cylinder is fixedly installed with an external power supply component, and a vertical telescopic rod is fixedly installed above the bottom motor, and the upper end of the vertical telescopic rod passes through the fixed cylinder and is connected to the inner rotating cylinder.

[0012] Preferably, a component groove is provided inside the inner rotating cylinder, and a plurality of through grooves are evenly provided inside the component groove. Push rods are fixedly installed inside the plurality of through grooves, and an extrusion block is fixedly installed at one end of the push rod facing the center position of the inner rotating cylinder. The extrusion block is inside the component groove, and one end of the push rod passes through the through groove and is inside the external power supply component.

[0013] Preferably, two clamping rings are slidably installed inside the middle clamping groove, and multiple balls are movably installed on the opposite sides of the two clamping rings. Spiral columns are movably installed on the ends of the two clamping rings, and the rotation of the spiral columns is used to drive the corresponding clamping rings to move.

[0014] Preferably, an annular groove is provided inside the fixed outer ring, the inner rotating ring is movably mounted inside the annular groove, and the driving member includes a fixed outer shell fixedly mounted outside the fixed outer ring.

[0015] Preferably, the driving member also includes a worm movably mounted inside the fixed shell, a driving motor is fixedly mounted on the outside of the fixed shell, the output end of the driving motor is fixedly connected to the worm, and a turbine tooth is fixedly mounted on the outside of the inner rotating ring, and the turbine tooth is meshed with the worm.

[0016] Preferably, sliding rings are fixedly mounted on the upper and lower sides of the inner rotating ring, and the inner rotating ring is movably mounted inside the annular groove via the two sliding rings.

[0017] Preferably, a plurality of mounting grooves are evenly provided inside the adaptive clamping member, a plurality of compression springs are fixedly installed inside the plurality of mounting grooves, a displacement cylinder is fixedly installed at one end of the plurality of compression springs, the displacement cylinder is inserted into the mounting groove, a roller is movably installed at one end of the displacement cylinder facing the center position of the inner rotating ring, and a vertical surface groove is provided on the outer side of the circumference of the roller.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The precision core rod processing device described in the present invention is a device in which the outer side of the upper half of the core rod body is polished when the lower end of the core rod body is clamped by the lifting and rotating member. When the lower half of the core rod body is subsequently polished, the outer side of the top end of the core rod body is clamped by the clamping rotating member. As the clamping rotating member drives the core rod body to rise and rotate, it cooperates with the movable polishing component to complete the polishing. At this time, the upper half of the core rod body has been polished, and the surface is smoother and flatter. The clamping here will be more firm, and the clamping force distribution will be more uniform, which can reduce vibration and deformation during the processing.

[0020] 2. The precision core rod processing device described in the present invention drives the outer fixed disk, the rotating component and the core rod body to rise by extending the second telescopic rod. At the same time, the bottom motor drives the vertical telescopic rod, the inner rotating cylinder and the core rod body to rotate. At this time, the fixed cylinder remains fixed, and the vertical telescopic rod is set to extend and retract in the vertical direction, and then cooperates with the extension of the second telescopic rod, so that the bottom motor can still drive the inner rotating cylinder to rotate when the second telescopic rod is extended, and clamps a part of the core rod body and drives it to rise and fall and rotate, which can avoid the influence of friction, make the rotation accuracy of the core rod body higher, and will not cause position deviation due to external force.

[0021] 3. The precision core rod processing device described in the present invention drives the clamping rotating part to descend through the lifting frame, so that the upper end of the core rod body is inside the clamping rotating part. At this time, the upper end of the core rod body is clamped by a plurality of evenly distributed adaptive clamping parts. The worm is driven by the driving motor to rotate, and then the turbine teeth drive the core rod body to rotate. The lifting frame drives the lifting and lowering of the clamping rotating part, thereby realizing the lifting and lowering rotation of the core rod body, so that the lower half of the core rod body is polished by the movable polishing component. At this time, the polished part of the core rod body is clamped, so that the clamping force distribution will be more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 It is an overall stereogram of the present invention;

[0024] Figure 2 It is a three-dimensional schematic diagram of the lifting frame and the clamping rotating member in the present invention;

[0025] Figure 3 It is a three-dimensional schematic diagram of the movable grinding component and the core rod body in the present invention;

[0026] Figure 4 It is a three-dimensional schematic diagram of the lifting and rotating member in the present invention;

[0027] Figure 5 It is a three-dimensional schematic diagram of the fixed cylinder and the inner rotating cylinder in the present invention;

[0028] Figure 6 It is a three-dimensional schematic diagram of the clamping ring in the present invention;

[0029] Figure 7 It is a three-dimensional schematic diagram of the fixed outer ring and the inner rotating ring in the present invention;

[0030] Figure 8 It is a three-dimensional schematic diagram of the adaptive clamping member in the present invention.

[0031] In the figure: 1. Device frame; 11. Middle clamping groove; 12. Clamping ring; 13. Ball; 14. Screw column; 2. Lifting and rotating member; 21. Rotating member; 211. Fixed cylinder; 212. External power supply member; 213. Inner rotating cylinder; 2131. Component groove; 2132. Push rod; 2133. Extrusion block; 2134. Through groove; 22. External fixed plate; 23. Telescopic rod 2; 24. Vertical telescopic rod; 25. Bottom motor; 3. Mobile grinding member; 4. Mandrel body; 5. Lifting frame; 51. Fixed block; 52. Connecting block; 53. Telescopic rod 1; 6. Clamping rotating part; 61. Fixed outer ring; 611. Annular groove; 62. Inner rotating ring; 621. Turbine gear; 622. Sliding ring; 623. Mounting groove; 63. Adaptive clamping part; 631. Displacement cylinder; 632. Roller; 6321. Vertical groove; 633. Compression spring; 64. Driving part; 641. Fixed housing; 642. Driving motor; 643. Worm. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] Example 1: Figure 1-6 As shown, a precision mandrel processing device according to an embodiment of the present invention includes a device frame 1, a lifting and rotating member 2 is movably installed inside the device frame 1, two opposed movable grinding components 3 are movably installed above the device frame 1, a middle clamping groove 11 is opened through the top of the device frame 1, a mandrel body 4 is inserted into the middle clamping groove 11, and the end of the mandrel body 4 is inserted into the lifting and rotating member 2, two lifting frames 5 are movably installed above the device frame 1, and a clamping rotating member 6 is fixedly installed between the two lifting frames 5;

[0034] The clamping rotating member 6 includes a fixed outer ring 61 and an inner rotating ring 62 rotatably installed inside the fixed outer ring 61. A plurality of adaptive clamping members 63 are movably installed inside the inner rotating ring 62. The plurality of adaptive clamping members 63 are evenly distributed inside the inner rotating ring 62. A driving member 64 is installed on the outside of the fixed outer ring 61. The driving member 64 is used to drive the inner rotating ring 62 to rotate inside the fixed outer ring 61.

[0035] Specifically, the lifting frame 5 is used to lift the height of the clamping rotating member 6. When the core rod body 4 needs to be ground, the clamping rotating member 6 is in a higher position. At this time, the core rod body 4 is inserted into the middle clamping groove 11, and its lower end is inserted into the interior of the lifting rotating member 2 for clamping. The two movable grinding components 3 are brought close to each other by manual or electric means, so that the outer side of the top end of the core rod body 4 contacts the grinding component, and the core rod body 4 is driven to rise and rotate by the lifting and rotation of the lifting rotating member 2. The rising and rotating core rod body 4 cooperates with the movable grinding component 3, so that the outer side of the upper half of the core rod body 4 is ground. At this time, the upper half of the core rod body 4 has been ground, and the surface is smoother and flatter. The holding will be more firm, the clamping force distribution will be more uniform, and the vibration and deformation during the processing can be reduced. Therefore, in this device, after the upper half of the mandrel body 4 is polished, the lifting frame 5 is lowered to drive the clamping rotating member 6 to descend, so that the upper half of the mandrel body 4 is inside the clamping rotating member 6 and is clamped by the multiple adaptive clamping members 63 inside it. At this time, the clamping rotating member 6 rises and drives the mandrel body 4 to rise, so that the lower end of the mandrel body 4 is no longer clamped by the lifting rotating member 2. The mandrel body 4 is driven to rise, that is, the lower half of the mandrel body 4 will contact the two movable polishing components 3, and the inner rotating ring 62 is driven by the driving member 64 to rotate, thereby driving the multiple adaptive clamping members 63 and the mandrel body 4. The tool 4 is rotated to grind the lower half of the mandrel body 4, and there is no need to readjust the clamping position or replace the clamp many times, so the continuity of the grinding of the mandrel body 4 is achieved, the grinding efficiency of the mandrel body 4 is improved, and the subsequent clamping of the position after grinding can make the clamping more stable. In this device, when the lower end of the mandrel body 4 is clamped by the lifting and rotating member 2, the outer side of its upper half is ground. After the grinding of the upper half of the mandrel body 4 is completed, there is still a certain distance between the lifting and rotating member 2 and the movable grinding component 3. When grinding the lower half of the mandrel body 4 subsequently, the outer side of the top end of the mandrel body 4 is clamped by the clamping rotating member 6. As the clamping rotating member 6 drives the mandrel body 4 to rise and rotate, it cooperates with the movable grinding component 3 to complete the grinding. During grinding, compared with the grinding in traditional technology, the core rod body 4 will gradually rise for grinding, so that the core rod body 4 and the clamping position are gradually close, until the clamping position and the grinding position are in a very close position, and most of the grinding of the core rod body 4 is completed. Subsequently, adjustment is performed to grind the remaining part of the core rod body 4. If the distance between the clamping position and the grinding position is too close, the vibration frequency generated during the grinding process will be close to the natural frequency of the clamping component, thereby causing resonance. The resonance phenomenon will significantly increase the vibration amplitude of the clamping component, thereby intensifying the vibration of the entire grinding process. The intensification of this vibration will not only reduce the processing accuracy, but may also cause uneven scratches or damage on the processed surface, affecting the final quality of the core rod body 4.

[0036] like Figure 2As shown, the lifting frame 5 includes a fixed block 51 located above the device frame 1 and a telescopic rod 53 fixedly installed below the fixed block 51. The lower end of the telescopic rod 53 is connected to the fixed block above the device frame 1. The fixed block 51 is fixedly installed with two connecting blocks 52 on the side facing the clamping rotating member 6. One end of the connecting block 52 is fixedly connected to the fixed outer ring 61.

[0037] Specifically, the movement of the movable grinding component 3 will not change the position of the telescopic rod 53. Therefore, when the telescopic rod 53 is extended or retracted, it will drive the fixed block 51, the connecting block 52 and the clamping rotating member 6 to rise and fall. The clamping rotating member 6 is in the middle position between the two fixed blocks 51 and directly above the middle clamping groove 11. Multiple connecting blocks 52 are used to support the position of the clamping rotating member 6.

[0038] like Figure 3-5 As shown, the lifting and rotating member 2 includes a bottom motor 25 fixedly installed inside the lower part of the device frame 1 and a rotating component 21 installed in the middle part of the lifting and rotating member 2. The rotating component 21 is located directly above the bottom motor 25. An outer fixed plate 22 is fixedly installed on the outer side of the rotating component 21. A plurality of telescopic rods 23 are fixedly installed below the outer fixed plate 22. The lower ends of the plurality of telescopic rods 23 are installed inside the device frame 1.

[0039] The rotating component 21 includes a fixed cylinder 211 and an inner rotating cylinder 213 movably installed inside the fixed cylinder 211. The upper outer side of the fixed cylinder 211 is fixedly connected to the outer fixed disk 22. The external power supply component 212 is fixedly installed at the lower outer side of the fixed cylinder 211. A vertical telescopic rod 24 is fixedly installed above the bottom motor 25. The upper end of the vertical telescopic rod 24 passes through the fixed cylinder 211 and is connected to the inner rotating cylinder 213.

[0040] A component groove 2131 is provided inside the inner rotating cylinder 213, and a plurality of through grooves 2134 are evenly provided inside the component groove 2131. A push rod 2132 is fixedly installed inside the plurality of through grooves 2134. An extrusion block 2133 is fixedly installed at one end of the push rod 2132 facing the center position of the inner rotating cylinder 213. The extrusion block 2133 is located inside the component groove 2131, and one end of the push rod 2132 passes through the through groove 2134 and is located inside the external power supply component 212.

[0041] Specifically, the lower end of the core rod body 4 is inserted into the interior of the inner rotating cylinder 213. At this time, multiple push rods 2132 are retracted, and multiple extrusion blocks 2133 are hidden inside the component groove 2131. When the lower end of the core rod body 4 is inside the inner rotating cylinder 213, the multiple push rods 2132 are extended to drive the extrusion block 2133 to move toward the center position of the inner rotating cylinder 213, that is, multiple push rods 2132 will be against the outer side of the lower end of the core rod body 4 to clamp it. At this time, the extension of the telescopic rod 23 drives the outer fixed plate 22, the rotating component 21 and the core rod body 4 to rise. At the same time, the bottom motor 25 drives the vertical telescopic rod 24, the inner rotating cylinder 213 and the core rod body 4 to rotate. At this time, the fixed cylinder 211 remains fixed, and the vertical telescopic rod 24 is set to extend and retract in the vertical direction, thereby cooperating with the extension of the telescopic rod 23, so that When the telescopic rod 23 is extended, the bottom motor 25 can still drive the inner rotating cylinder 213 to rotate, clamp a part of the core rod body 4 and then drive it to rise and fall and rotate, which can avoid the influence of friction, so that the rotation accuracy of the core rod body 4 is higher, and there will be no position offset due to external force. The push rod 2132 can be battery-driven. When an external power supply component 212 is set on the outside of the fixed cylinder 211, a conductive track can be set inside the external power supply component 212. At this time, the charging end of the push rod 2132 is inside the conductive track of the external power supply component 212. Even if the charging end of the push rod 2132 moves inside the conductive track, it will not affect the charging of the push rod 2132, thereby extending the use of the device. The power supply effect of the external power supply component 212 in the device can also be achieved through the principle of wireless charging.

[0042] like Figure 6 As shown, two clamping rings 12 are slidably installed inside the middle clamping groove 11, and multiple balls 13 are movably installed on the opposite sides of the two clamping rings 12. Spiral columns 14 are movably installed at the ends of the two clamping rings 12, and the rotation of the spiral columns 14 is used to drive the corresponding clamping rings 12 to move.

[0043] Specifically, under the drive of electricity, the corresponding spiral column 14 rotates, thereby driving the two clamping rings 12 to approach each other. The principle of the screw rotation is mainly adopted to make the block slide. When the two clamping rings 12 approach each other, multiple balls 13 will contact the outer side of the middle section of the core rod body 4, so that the core rod body 4 provides an additional support part during grinding. The multi-directional movement of the balls 13 can cooperate with the lifting and rotation of the core rod body 4.

[0044] like Figure 7-8 As shown, an annular groove 611 is defined inside the fixed outer ring 61 , the inner rotating ring 62 is movably mounted inside the annular groove 611 , and the driving member 64 includes a fixed housing 641 fixedly mounted outside the fixed outer ring 61 .

[0045] The driving member 64 also includes a worm 643 movably mounted inside the fixed housing 641 , a driving motor 642 is fixedly mounted on the outside of the fixed housing 641 , the output end of the driving motor 642 is fixedly connected to the worm 643 , and a turbine tooth 621 is fixedly mounted on the outside of the inner rotating ring 62 , which is engaged with the worm 643 .

[0046] Sliding rings 622 are fixedly installed on the upper and lower sides of the inner rotating ring 62 . The inner rotating ring 62 is movably installed inside the annular groove 611 through the two sliding rings 622 .

[0047] Specifically, after the upper half of the core rod body 4 is polished, in order to avoid the distance between the lifting rotating part 2 and the movable polishing component 3 being too close and thus causing abnormal vibration, the clamping rotating part 6 is driven down by the lifting frame 5, so that the upper end of the core rod body 4 is inside the clamping rotating part 6. At this time, the upper end of the core rod body 4 is clamped by a plurality of evenly distributed adaptive clamping parts 63. The worm 643 is driven by the driving motor 642 to rotate, and then the turbine teeth 621 drive the core rod body 4 to rotate, and cooperate with the lifting frame 5 to drive the lifting and lowering of the clamping rotating part 6, thereby realizing the lifting and rotating of the core rod body 4, so that the lower half of the core rod body 4 is polished by the movable polishing component 3, and the polished part of the core rod body 4 is clamped at this time, so that the clamping force distribution will be more uniform.

[0048] Example 2: Figure 8 As shown, compared with Example 1, another embodiment of the present invention is: a plurality of mounting grooves 623 are evenly opened inside the adaptive clamping member 63, a plurality of compression springs 633 are fixedly installed inside the plurality of mounting grooves 623, a displacement cylinder 631 is fixedly installed at one end of the plurality of compression springs 633, the displacement cylinder 631 is inserted into the interior of the mounting groove 623, a roller 632 is movably installed at one end of the displacement cylinder 631 toward the center position of the inner rotating ring 62, and a vertical surface groove 632 is opened on the outer side of the circumference of the roller 632.

[0049] Specifically, the circumferential diameter of the displacement cylinder 631 at multiple initial positions will be larger than the diameter of the core rod body 4 after grinding. When the top of the core rod body 4 rises, the top of the core rod body 4 will contact the lower side of the circumference of the vertical surface groove 6321, and will not contact the position of the vertical surface groove 6321. At this time, as the core rod body 4 rises, the compression spring 633 will be squeezed, that is, the displacement cylinder 631 moves toward the installation groove 623, and the roller 632 in contact with the core rod body 4 will rotate accordingly. When the core rod body 4 rises to a certain position, the roller 632 rotates one circle, so that the vertical surface groove 6321 contacts the outside of the core rod body 4. The setting of the vertical surface groove 6321 makes the displacement cylinder 631 move in the direction of the installation groove 623. The cylinder 631 can have a larger area to contact the outside of the core rod body 4. Under the restoring force of the compression spring 633, the core rod body 4 is clamped by cooperating with the vertical surface groove 6321. The slight deformation force of multiple compression springs 633 can make multiple adaptive clamping parts 63 fit more comprehensively on the outside of the core rod body 4, and will not cause position deviation of the core rod body 4 due to slight gaps on the outside of the circumference of multiple core rod bodies 4. The rise of the top end of the core rod body 4 inside the clamping rotating part 6 depends on the circumference of the roller 632, so that when the lower half of the core rod body 4 is polished, multiple adaptive clamping parts 63 can be clamped at a suitable position on the outside of the core rod body 4.

[0050] Working principle: The lifting frame 5 is used to lift the height of the clamping rotating part 6. When the mandrel body 4 needs to be ground, the clamping rotating part 6 is in a higher position. At this time, the mandrel body 4 is inserted into the middle clamping groove 11, and its lower end is inserted into the interior of the lifting rotating part 2 for clamping. The two movable grinding components 3 are brought close to each other by manual or electric means, so that the outer side of the top end of the mandrel body 4 contacts the grinding component, and the mandrel body 4 is driven to rise and rotate through the lifting and rotation of the lifting rotating part 2. The rising and rotating mandrel body 4 cooperates with the movable grinding component 3, so that the outer side of the upper half of the mandrel body 4 is ground. At this time, the upper half of the mandrel body 4 has been ground, and the surface is smoother and flatter. The clamping here will be more firm, and the clamping force distribution will be better. The grinding wheel 62 is rotated by the driving member 64, and the grinding wheel 63 is rotated by the driving member 64, so that the grinding wheel 63 and the grinding wheel 4 are ground more evenly and can reduce vibration and deformation during the processing. Therefore, in the present device, after the upper half of the core rod body 4 is ground, the lifting frame 5 is lowered and the clamping rotating member 6 is driven to lower, so that the upper half of the core rod body 4 is inside the clamping rotating member 6 and is clamped by the multiple adaptive clamping members 63 inside it. At this time, the clamping rotating member 6 rises and drives the core rod body 4 to rise, so that the lower end of the core rod body 4 is no longer clamped by the lifting rotating member 2. The core rod body 4 is driven to rise, that is, the lower half of the core rod body 4 will contact the two movable grinding components 3. The inner rotating ring 62 is driven by the driving member 64 to rotate, thereby driving the multiple adaptive clamping members 63 and the core rod body 4 to rotate, thereby realizing the grinding of the lower half of the core rod body 4, and there is no need The clamping position is readjusted or the clamp is replaced multiple times to achieve the continuity of the grinding of the core rod body 4, improve the grinding efficiency of the core rod body 4, and the subsequent clamping of the position after grinding can make the clamping more stable. In this device, when the lower end of the core rod body 4 is clamped by the lifting and rotating member 2, the outer side of its upper half is ground. After the grinding of the upper half of the core rod body 4 is completed, there is still a certain distance between the lifting and rotating member 2 and the movable grinding component 3. When subsequently grinding the lower half of the core rod body 4, the outer side of the top end of the core rod body 4 is clamped by the clamping rotating member 6. As the clamping rotating member 6 drives the core rod body 4 to rise and rotate, it cooperates with the movable grinding component 3 to complete the grinding. Compared with the grinding in the traditional technology, the core rod body 4 will gradually rise for grinding, so that the core rod body 4 and the clamping The holding position gradually approaches until the clamping position and the grinding position are in an extremely close position, completing most of the grinding of the core rod body 4, and then adjusting to grind the remaining part of the core rod body 4. If the clamping position and the grinding position are too close, the vibration frequency generated during the grinding process will be close to the natural frequency of the clamping component, thereby causing resonance. The resonance phenomenon will significantly increase the vibration amplitude of the clamping component, thereby intensifying the vibration of the entire grinding process. The intensification of this vibration will not only reduce the machining accuracy, but may also cause uneven scratches or damage to the machined surface, affecting the final quality of the core rod body 4. After the grinding of the upper half of the core rod body 4 is completed, in order to avoid abnormal vibration caused by the lifting and rotating part 2 and the movable grinding component 3 being too close,The lifting frame 5 drives the clamping rotating member 6 to descend, so that the upper end of the mandrel body 4 is located inside the clamping rotating member 6. At this time, the upper end of the mandrel body 4 is clamped by multiple evenly distributed adaptive clamping members 63. The drive motor 642 drives the worm 643 to rotate, thereby causing the turbine teeth 621 to drive the mandrel body 4 to rotate. In conjunction with the lifting frame 5 to drive the clamping rotating member 6 up and down, the mandrel body 4 is lifted and rotated, so that the lower half of the mandrel body 4 is polished by the movable polishing member 3. At this time, the polished part of the mandrel body 4 is clamped, and the clamping force distribution is more even.

[0051] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision core rod processing device, comprising a device frame (1), characterized in that: A lifting rotating member (2) is movably installed inside the device frame (1), two oppositely arranged movable grinding components (3) are movably installed above the device frame (1), a middle clamping groove (11) is opened through the top of the device frame (1), a core rod body (4) is inserted into the inside of the middle clamping groove (11), and the end of the core rod body (4) is inserted into the inside of the lifting rotating member (2), two lifting frames (5) are movably installed above the device frame (1), and a clamping rotating member (6) is fixedly installed between the two lifting frames (5); The clamping rotating member (6) includes a fixed outer ring (61) and an inner rotating ring (62) rotatably mounted inside the fixed outer ring (61); a plurality of adaptive clamping members (63) are movably mounted inside the inner rotating ring (62); the plurality of adaptive clamping members (63) are evenly distributed inside the inner rotating ring (62); a driving member (64) is mounted on the outer side of the fixed outer ring (61); the driving member (64) is used to drive the inner rotating ring (62) to rotate inside the fixed outer ring (61); An annular groove (611) is formed inside the fixed outer ring (61), the inner rotating ring (62) is movably mounted inside the annular groove (611), and the driving member (64) includes a fixed outer shell (641) fixedly mounted outside the fixed outer ring (61); The driving member (64) further includes a worm (643) movably mounted inside the fixed housing (641), a driving motor (642) fixedly mounted on the outside of the fixed housing (641), an output end of the driving motor (642) fixedly connected to the worm (643), and a turbine tooth (621) fixedly mounted on the outside of the inner rotating ring (62), the turbine tooth (621) meshing with the worm (643).

2. A precision mandrel processing device according to claim 1, characterized in that: The lifting frame (5) includes a fixed block (51) located above the device frame (1) and a telescopic rod (53) fixedly installed below the fixed block (51), the lower end of the telescopic rod (53) is connected to the fixed block above the device frame (1), and the fixed block (51) is fixedly installed with two connecting blocks (52) on the side facing the clamping rotating member (6), and one end of the connecting block (52) is fixedly connected to the fixed outer ring (61).

3. The precision mandrel processing device according to claim 1, characterized in that: The lifting and rotating member (2) comprises a bottom motor (25) fixedly mounted inside the lower portion of the device frame (1) and a rotating member (21) mounted in the middle of the lifting and rotating member (2), wherein the rotating member (21) is located directly above the bottom motor (25), an outer fixed plate (22) is fixedly mounted on the outer side of the rotating member (21), and a plurality of telescopic rods (23) are fixedly mounted below the outer fixed plate (22), and the lower ends of the plurality of telescopic rods (23) are mounted inside the device frame (1).

4. The precision mandrel processing device according to claim 3, characterized in that: The rotating component (21) includes a fixed cylinder (211) and an inner rotating cylinder (213) movably mounted inside the fixed cylinder (211); the upper outer portion of the fixed cylinder (211) is fixedly connected to the outer fixed disk (22); the lower outer portion of the fixed cylinder (211) is fixedly mounted with an external power supply component (212); a vertical telescopic rod (24) is fixedly mounted above the bottom motor (25); the upper end of the vertical telescopic rod (24) passes through the fixed cylinder (211) and is connected to the inner rotating cylinder (213).

5. The precision mandrel processing device according to claim 4, characterized in that: A component groove (2131) is provided inside the inner rotating cylinder (213), and a plurality of through grooves (2134) are evenly provided inside the component groove (2131). A push rod (2132) is fixedly installed inside the plurality of through grooves (2134). An extrusion block (2133) is fixedly installed at one end of the push rod (2132) facing the center position of the inner rotating cylinder (213). The extrusion block (2133) is inside the component groove (2131), and one end of the push rod (2132) passes through the through groove (2134) and is inside the external power supply component (212).

6. The precision mandrel processing device according to claim 1, characterized in that: Two clamping rings (12) are slidably mounted inside the middle clamping groove (11), and a plurality of balls (13) are movably mounted on opposite sides of the two clamping rings (12). Spiral columns (14) are movably mounted on the ends of the two clamping rings (12), and the spiral columns (14) rotate to drive the corresponding clamping rings (12) to move.

7. The precision mandrel processing device according to claim 1, characterized in that: Sliding rings (622) are fixedly mounted on the upper and lower sides of the inner rotating ring (62), and the inner rotating ring (62) is movably mounted inside the annular groove (611) via the two sliding rings (622).

8. The precision mandrel processing device according to claim 1, characterized in that: A plurality of mounting grooves (623) are evenly arranged inside the adaptive clamping member (63), a plurality of compression springs (633) are fixedly installed inside the plurality of mounting grooves (623), a displacement cylinder (631) is fixedly installed at one end of the plurality of compression springs (633), the displacement cylinder (631) is inserted into the mounting groove (623), a roller (632) is movably arranged at one end of the displacement cylinder (631) facing the center position of the inner rotating ring (62), and a vertical surface groove (6321) is arranged on the outer side of the circumference of the roller (632).

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