Hexagonal steel column polishing equipment

Abstract

This invention discloses a hexagonal steel column grinding and polishing device, relating to the field of hexagonal steel column grinding and polishing technology. It includes a truss, with symmetrically fixed frames at the top of the truss. Each of the two fixed frames has a clamping and rotating mechanism mounted on its top, and the two clamping and rotating mechanisms are arranged opposite each other. A steel column body is positioned between the two clamping and rotating mechanisms, with both ends of the steel column body engaging with the output ends of their respective clamping and rotating mechanisms to drive the steel column body to rotate around its own axis. This invention arranges several grinding components in a regular hexagonal pattern along the circumference within a mounting sleeve, allowing these components to simultaneously grind multiple outer circumferential surfaces of the steel column body. This reduces the multiple flipping and repetitive positioning steps required in traditional single-sided sequential grinding processes, lowers the cumulative positioning error caused by multiple clamping operations, and improves the grinding consistency among the multiple outer circumferential surfaces of the hexagonal steel column.

Description

Technical Field

[0001] This invention relates to the field of hexagonal steel column grinding and polishing technology, specifically to a hexagonal steel column grinding and polishing equipment. Background Technology

[0002] A hexagonal steel column is a metal profile with a hexagonal cross-section, typically having six outer peripheral planes and edge transition areas formed between adjacent outer peripheral planes. During the production, assembly, or subsequent use of hexagonal steel columns, their outer peripheral surfaces often require grinding, polishing, or deburring to remove surface oxide layers, machining burrs, local scratches, or other surface defects, so that they meet the requirements for subsequent assembly, coating, or use.

[0003] Existing surface grinding methods for hexagonal steel columns typically include manual grinding, single-sided sequential grinding, or grinding with a grinding wheel on a localized surface. When processing hexagonal steel columns, these methods generally require grinding one outer circumferential surface first, and then processing the remaining outer circumferential surfaces sequentially by flipping or repositioning. Since hexagonal steel columns have multiple outer circumferential surfaces, repeated flipping and re-clamping increase the number of processing steps and easily introduce cumulative positioning errors, making it difficult to maintain consistent grinding depth, grinding pressure, and surface roughness between different outer circumferential surfaces. Summary of the Invention

[0004] The purpose of this invention is to provide a hexagonal steel column grinding and polishing device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A hexagonal steel column grinding and polishing device includes: a truss, with fixed frames symmetrically fixed to the top of the truss, and clamping and rotating mechanisms installed on the top of each of the two fixed frames, the two clamping and rotating mechanisms being arranged opposite to each other; a steel column body, the steel column body being disposed between the two clamping and rotating mechanisms, with both ends of the steel column body respectively engaging with the output ends of the corresponding clamping and rotating mechanisms to drive the steel column body to rotate around its own axis through the two clamping and rotating mechanisms; and a reciprocating grinding mechanism, the reciprocating grinding mechanism being disposed between the two clamping and rotating mechanisms and sleeved on the steel column body. The reciprocating grinding mechanism can reciprocate along the axial direction of the steel column body to continuously grind the outer peripheral surface of the steel column body during the rotation of the steel column body. The reciprocating grinding mechanism includes a mounting sleeve sleeved on the outer peripheral surface of the steel column body, and several grinding components are arranged in a regular hexagonal pattern along the circumference inside the mounting sleeve. The grinding components are respectively set for multiple outer peripheral surfaces of the steel column body, and are used to synchronously grind multiple outer peripheral surfaces of the steel column body during the rotation of the steel column body. A follower structure is installed on the outside of the mounting sleeve to drive the mounting sleeve to reciprocate.

[0006] A further improvement of the technical solution of the present invention is that each grinding component includes an air storage cylinder, a protective separation cylinder, a piston rod, a ball head seat, a ball joint seat, a mounting plate, and a fine-tuning grinding structure; the air storage cylinder is fixedly installed on the outer surface of the mounting sleeve, and multiple air storage cylinders are arranged at intervals along the circumference of the mounting sleeve; the protective separation cylinder is disposed between the air storage cylinder and the mounting sleeve, and one end of the protective separation cylinder is connected to the air storage cylinder, and the other end is connected to the outer surface of the mounting sleeve; the piston rod is slidably disposed in the air storage cylinder, and the piston rod extends radially along the mounting sleeve, and one end of the piston rod passes through the protective separation cylinder and the mounting sleeve in sequence, and extends into the inner cavity of the mounting sleeve; the ball head seat is fixedly installed at the end of the piston rod that extends into the inner cavity of the mounting sleeve, and the ball joint seat and the ball head seat are omnidirectionally rotatably fitted; the mounting plate is fixedly installed on the side of the ball joint seat facing the steel column body, and the fine-tuning grinding structure is installed on the side of the mounting plate facing the steel column body, for contacting and grinding the outer circumferential surface of the steel column body.

[0007] A further improvement of the technical solution of the present invention is that: the fine-tuning grinding structure includes a mounting groove, irregularly shaped springs, and a grinding block; the mounting groove is opened on the side of the mounting plate facing the steel column body; two irregularly shaped springs are provided, and the two irregularly shaped springs are symmetrically installed in the mounting groove; one end of the two irregularly shaped springs is fixedly connected to the mounting plate, and the other end of the two irregularly shaped springs is fixedly connected to the grinding block, so that the grinding block can elastically float with a micro-stroke relative to the mounting plate; the two irregularly shaped springs are spaced apart along the length direction of the grinding block to form multi-point elastic support for the grinding block, so that the grinding block maintains a relatively stable grinding posture when it contacts the outer peripheral surface of the steel column body.

[0008] A further improvement of the technical solution of the present invention is that: a number of grinding components are arranged in multiple groups along the axial direction of the mounting sleeve, and each group of grinding components includes multiple grinding components spaced apart along the circumference of the mounting sleeve; adjacent groups of grinding components are staggered in the axial direction of the mounting sleeve, and adjacent groups of grinding components overlap at least partially in the axial projection area of ​​the steel column body, so that the number of grinding components forms an axially staggered overlapping grinding coverage path.

[0009] A further improvement of the technical solution of the present invention is that: the grinding block includes a left grinding block, a central grinding block and a right grinding block; the left grinding block, the central grinding block and the right grinding block are arranged sequentially along the width direction of the grinding block; the central grinding block is used to contact the outer peripheral plane area of ​​the steel column body, and the left grinding block and the right grinding block are respectively used to contact the edge transition areas on both sides of the outer peripheral plane area.

[0010] A further improvement of the technical solution of the present invention is that: the irregularly shaped spring sheet includes a first connecting section fixedly connected to the mounting plate, a second connecting section fixedly connected to the grinding block, and an elastically bent section connected between the first connecting section and the second connecting section; the left grinding block, the central grinding block, and the right grinding block are elastically connected to the mounting plate through corresponding irregularly shaped spring sheets, and the elastic support stiffness of the irregularly shaped spring sheet corresponding to the central grinding block is greater than the elastic support stiffness of the irregularly shaped spring sheets corresponding to the left and right grinding blocks; the central grinding block is used to stably contact the outer peripheral plane area of ​​the steel column body under the action of higher elastic support stiffness, and the left and right grinding blocks are used to flexibly contact the edge transition areas on both sides of the outer peripheral plane area under the action of lower elastic support stiffness.

[0011] A further improvement of the technical solution of the present invention is that a chip removal groove is provided between adjacent grinding components. The chip removal groove is opened on the cylinder wall of the mounting sleeve and penetrates the cylinder wall of the mounting sleeve radially so that the inner cavity of the mounting sleeve is connected to the external space. The end of the chip removal groove near the inner cavity of the mounting sleeve forms a flared part. The opening size of the flared part gradually decreases in the direction away from the inner cavity of the mounting sleeve so as to guide the debris generated during the grinding process into the chip removal groove. The flared part is a funnel-shaped chip guide orifice. The large end of the funnel-shaped chip guide orifice is set towards the steel column body, and the small end is connected to the main groove section of the chip removal groove.

[0012] A further improvement of the technical solution of the present invention is that: the follower structure includes a slide rod, a threaded rod, a movable seat, a rotating sleeve, a pressing wheel, and a connecting column; the slide rod and the threaded rod are arranged in parallel between two fixed frames, the two ends of the slide rod are fixedly connected to the two fixed frames respectively, and the two ends of the threaded rod are rotatably connected to the two fixed frames respectively. The movable seat is slidably mounted on the slide rod and threadedly engaged with the threaded rod, so as to reciprocate along the length of the slide rod when the threaded rod rotates; the rotating sleeve is rotatably mounted on the movable seat and can rotate relative to the movable seat about the axis of the steel column body; the two ends of the movable seat are respectively rotatably mounted with extrusion wheels, which roll against the outer circumferential surface of the rotating sleeve to provide rotational support and radial limit for the rotating sleeve; the rotating sleeve is sleeved on the outer circumference of the mounting sleeve, and the rotating sleeve and the mounting sleeve are fixedly connected by a connecting column so that the mounting sleeve can rotate synchronously with the rotating sleeve and reciprocate along the axial direction of the steel column body with the movable seat; the bottom end of the mounting sleeve is symmetrically slidably connected with a square steel tube, and the two ends of the square steel tube are respectively fixedly connected to the output end of the clamping rotation mechanism; a first driving device is fixedly mounted on one side of the fixed frame, and the output end of the first driving device passes through the side wall of the fixed frame and is fixedly connected to the end of the threaded rod.

[0013] A further improvement of the technical solution of the present invention is that: the clamping and rotating mechanism includes a base, and two bases are configured. The two bases are respectively fixedly installed on the top of the corresponding fixed frame. A top seat is provided above the base and is detachably connected to the base by a bolt structure. A second driving device is fixedly installed on one side of one of the fixed frames. At least two driving wheels are symmetrically rotated and installed on the inner side of the base. The second driving device is connected to the corresponding driving wheel. At least two clamping wheels are symmetrically rotated and installed on the inner side of the top seat. A clamping seat is provided between the driving wheel and the clamping wheel and rolls in contact with the driving wheel and the clamping wheel respectively, so that the clamping seat can rotate relative to the base and the top seat under the drive of the driving wheel.

[0014] A further improvement of the technical solution of the present invention is that: an internal hexagonal clamping cavity is formed on the inner circumference of the clamping seat, and the cross-sectional shape of the internal hexagonal clamping cavity is adapted to the outer circumferential shape of the end of the steel column body to limit the circumferential position of the steel column body; an elastic damping liner is provided on the cavity wall surface of the internal hexagonal clamping cavity, and the elastic damping liner is used to elastically abut against the outer circumferential surface of the end of the steel column body to improve the clamping stability between the clamping seat and the steel column body.

[0015] By adopting the above technical solution, the technical effects achieved by this invention compared to the prior art are as follows: 1. This invention provides a hexagonal steel column grinding and polishing equipment. By arranging several grinding components in a regular hexagonal pattern along the circumference inside the mounting sleeve, the grinding components can simultaneously grind multiple outer peripheral surfaces of the steel column body. This reduces the multiple flipping and repetitive positioning steps required in the traditional single-sided sequential grinding process, reduces the cumulative positioning error caused by multiple clamping, and helps to improve the grinding consistency among multiple outer peripheral surfaces of the hexagonal steel column.

[0016] 2. This invention provides a hexagonal steel column grinding and polishing device. The clamping and rotating mechanism drives the steel column body to rotate around its own axis, and the mounting sleeve rotates synchronously with the steel column body. This allows the grinding components inside the mounting sleeve to continuously correspond to the corresponding outer circumferential surfaces of the steel column body. At the same time, by changing the position of each grinding component relative to the direction of gravity through synchronous rotation, the possibility of grinding debris accumulating at the fixed lower grinding component for a long time is reduced. This reduces the risk of secondary scratches, insufficient local grinding, or uneven surface roughness caused by debris getting stuck between the grinding component and the steel column body.

[0017] 3. This invention provides a hexagonal steel column grinding and polishing equipment. An axial feeding structure is formed by a sliding rod, a threaded rod, and a moving seat in the follower structure, and a rotary support structure is formed by a rotating sleeve, a pressing wheel, and a connecting column. This allows the mounting sleeve to reciprocate along the axial direction of the steel column body while maintaining synchronous rotation. This avoids the rotational movement of the mounting sleeve directly interfering with the threaded feeding structure, and helps maintain the angular correspondence between the grinding components and the outer circumferential surface of the steel column body and the axial grinding stability.

[0018] 4. This invention provides a hexagonal steel column grinding and polishing device. The grinding assembly is radially loaded via an air reservoir and piston rod, enabling radial compensation based on local dimensional errors on the outer circumference of the steel column. The universal joint between the ball joint and the ball bearing allows for angle adjustment based on the local posture of the steel column's outer circumference. A protective separation cylinder isolates the piston rod's extension path, reducing the possibility of grinding debris entering the sliding contact area, thus improving the contact stability and reliability of the grinding assembly. A micro-stroke elastic floating structure is formed by the mounting groove, shaped springs, and grinding block, allowing the grinding block to locally yield and compensate for pressure when contacting the outer circumference of the steel column through the elastic deformation of the shaped springs. Simultaneously, two shaped springs are spaced apart along the length of the grinding block, providing multi-point elastic support, which helps reduce uneven grinding caused by one end of the grinding block tilting, localized compression, or unstable posture.

[0019] 5. This invention provides a hexagonal steel column grinding and polishing device. By grouping several grinding components along the axial direction of the mounting sleeve and staggering adjacent groups of grinding components axially with their projected areas at least partially overlapping, the grinding components of the preceding and following groups can supplement and trim the edge transition areas of each other, reducing missed grinding and seam marks between adjacent grinding areas. This axially staggered overlapping grinding coverage method can disperse the grinding boundary along the length of the steel column body, reducing abrupt changes in grinding marks caused by local boundary concentration. Furthermore, by dividing the grinding blocks into left grinding blocks, central grinding blocks, and right grinding blocks... The grinding blocks are designed to grind the main planar area, while the left and right grinding blocks handle the edge and transition areas, allowing for zoned grinding of the planar and transition areas. Furthermore, by ensuring that the elastic support stiffness of the irregularly shaped springs corresponding to the central grinding block is greater than that of the irregularly shaped springs corresponding to the left and right grinding blocks, the central grinding block maintains a relatively stable main grinding action, while the left and right grinding blocks use lower pressure to flexibly trim the edge transition and overlapping areas, thereby reducing the risk of over-grinding of edges, localized overheating, and repeated grinding of overlapping areas. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a schematic diagram of the reciprocating grinding mechanism of the present invention; Figure 3 This is a schematic diagram of the grinding component structure of the present invention; Figure 4 This is a first-view schematic diagram of a partial structure of the grinding component of the present invention; Figure 5This is a second-view schematic diagram of a partial structure of the polishing component of the present invention; Figure 6 This is a third-view schematic diagram of a partial structure of the grinding component of the present invention; Figure 7 This is a schematic diagram of the clamping and rotating mechanism of the present invention.

[0022] In the diagram: 1. Truss; 2. Fixed frame; 3. Clamping and rotating mechanism; 4. Steel column body; 5. Reciprocating grinding mechanism; 6. Sliding rod; 7. Threaded rod; 8. Mounting sleeve; 9. Air storage tank; 10. Protective separation tank; 11. Piston rod; 12. Ball head seat; 13. Ball joint seat; 14. Mounting plate; 15. Mounting groove; 16. Irregularly shaped spring; 17. Grinding block; 171. Left grinding block; 172. Central grinding block; 173. Right grinding block; 18. Chip removal groove; 19. Connecting column; 20. Rotating sleeve; 21. Moving seat; 22. Square steel pipe; 23. Extrusion wheel; 24. First drive device; 25. Base; 26. Top seat; 27. Drive wheel; 28. Pressure wheel; 29. ​​Second drive device; 30. Clamping seat. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the embodiments.

[0024] Example 1 like Figure 1-3 As shown, the present invention provides a hexagonal steel column grinding and polishing device, comprising: A truss 1 has symmetrically fixed brackets 2 at its top, and each of the two brackets 2 has a clamping and rotating mechanism 3 mounted on its top. The two clamping and rotating mechanisms 3 are arranged opposite each other. A steel column body 4 is positioned between the two clamping and rotating mechanisms 3, with both ends of the steel column body 4 engaging with the output ends of the corresponding clamping and rotating mechanisms 3 to drive the steel column body 4 to rotate around its own axis. A reciprocating grinding mechanism 5 is positioned between the two clamping and rotating mechanisms 3 and is fitted around the outer periphery of the steel column body 4, reciprocating... The grinding mechanism 5 can reciprocate along the axial direction of the steel column body 4 to continuously grind the outer peripheral surface of the steel column body 4 during the rotation of the steel column body 4. The reciprocating grinding mechanism 5 includes a mounting sleeve 8 sleeved on the outer periphery of the steel column body 4, and a number of grinding components are arranged in a regular hexagonal pattern along the circumference inside the mounting sleeve 8. The grinding components are respectively set for multiple outer peripheral surfaces of the steel column body 4, and are used to synchronously grind multiple outer peripheral surfaces of the steel column body 4 during the rotation of the steel column body 4. A follower structure is installed on the outside of the mounting sleeve 8 to drive the mounting sleeve 8 to reciprocate.

[0025] In this embodiment, the hexagonal steel column has multiple outer peripheral planes and edge transition areas located between adjacent planes. If a single-sided sequential grinding method is used, the steel column needs to be flipped and repositioned multiple times, which can easily lead to inconsistencies in grinding pressure, grinding time, and grinding boundaries between different outer peripheral surfaces. By using an installation sleeve 8 to cover the steel column body 4 and having several grinding components synchronously contact multiple outer peripheral surfaces, the steel column body 4 can complete the continuous grinding of multiple outer peripheral surfaces in a single clamping state, reducing the cumulative error caused by multiple face-changing positioning. During grinding, the two clamping and rotating mechanisms 3 clamp the two ends of the steel column body 4 and drive the steel column body 4 to rotate around its own axis; the mounting sleeve 8 rotates synchronously with the steel column body 4 under the drive of the follower structure and moves back and forth along the axial direction of the steel column body 4. The steel column body 4 and the mounting sleeve 8 mainly form axial relative displacement. The grinding component inside the mounting sleeve 8 acts on the corresponding outer circumferential surface along the length direction of the steel column body 4 while maintaining the angular correspondence. The aforementioned synchronous rotation is not used to form circumferential relative grinding between the steel column body 4 and the mounting sleeve 8, but rather to facilitate the dispersion of debris during the synchronous grinding process of the sleeve-type six sides. Since the interior of the mounting sleeve 8 is a relatively enclosed grinding space, the debris generated by the upper grinding component is easily moved to the lower area under the action of gravity. If the device maintains a fixed angular state for a long time, the lower grinding component is likely to continuously receive debris. By making the steel column body 4 and the mounting sleeve 8 rotate synchronously, the position of each grinding component relative to the direction of gravity changes with the rotation process, and the debris is less likely to be concentrated in the same grinding component for a long time, thereby reducing the risk of secondary scratches, local insufficient grinding, or uneven surface roughness caused by debris being trapped in the grinding contact area. Therefore, the clamping and rotating mechanism 3 provides the end clamping and synchronous rotation base for the steel column body 4, and the mounting sleeve 8 provides the base for synchronous grinding of multiple outer peripheral surfaces, thereby reducing the flipping and repetitive positioning steps required for grinding different outer peripheral surfaces of the steel column body 4, improving the grinding consistency between multiple outer peripheral surfaces of the steel column body 4, and the follow-up structure provides reciprocating feed along the axial direction of the steel column body 4. When the three work together, the main body section can be continuously ground while maintaining the phase correspondence between the six-sided grinding components and the outer peripheral surface of the hexagonal steel column, and the dispersion of debris inside the sleeve is also taken into account.

[0026] Example 2 In actual clamping and processing, the steel column body 4 may have dimensional tolerances, slight bending, local surface undulations or end clamping deviations. If the grinding components adopt a rigid installation method, the above deviations will cause excessive contact pressure in some areas and produce false contact in some areas. like Figure 3-6As shown, based on Embodiment 1, the present invention provides a technical solution: preferably, each grinding assembly includes an air reservoir 9, a protective separation cylinder 10, a piston rod 11, a ball joint seat 12, a ball joint seat 13, a mounting plate 14, and a fine-tuning grinding structure; the air reservoir 9 is fixedly installed on the outer surface of the mounting sleeve 8, and multiple air reservoirs 9 are arranged at intervals along the circumference of the mounting sleeve 8; the protective separation cylinder 10 is disposed between the air reservoir 9 and the mounting sleeve 8, and one end of the protective separation cylinder 10 is connected to the air reservoir 9, and the other end is connected to the outer surface of the mounting sleeve 8; the piston rod 11... 1. Slidingly disposed within the air storage cylinder 9, with the piston rod 11 extending radially along the mounting sleeve 8. One end of the piston rod 11 passes sequentially through the protective separation cylinder 10 and the mounting sleeve 8, and extends into the inner cavity of the mounting sleeve 8. The ball head seat 12 is fixedly installed at the end of the piston rod 11 that extends into the inner cavity of the mounting sleeve 8, and the ball joint seat 13 is omnidirectionally rotatably engaged with the ball head seat 12. The mounting plate 14 is fixedly installed on the side of the ball joint seat 13 facing the steel column body 4, and the fine-tuning grinding structure is installed on the side of the mounting plate 14 facing the steel column body 4 for contacting and grinding the outer peripheral surface of the steel column body 4.

[0027] In this embodiment, the air reservoir 9 and the piston rod 11 form a radial floating loading relationship. When a local surface of the steel column body 4 shifts outward or has a protrusion, the fine-tuning grinding structure is subjected to a reverse force, and the piston rod 11 retracts accordingly to release excessive local contact pressure. When the local surface is relatively concave or the contact gap increases, the air reservoir 9 continues to push the piston rod 11 outward, causing the grinding structure to re-apply to the outer peripheral surface. Thus, the grinding assembly can compensate for radial position changes on the outer peripheral surface. The universal joint between the ball head seat 12 and the ball joint seat 13 is used to compensate for contact posture deviations. Since the outer peripheral surface of the steel column body 4 consists of a plane and an edge transition area, a slight angular deviation may occur between the grinding block 17 and the outer peripheral surface. When the ball joint seat 13 swings relative to the ball head seat 12, the mounting plate 14 and the fine-tuning grinding structure can be adjusted at a small angle according to the contact posture, reducing the situation where the grinding block 17 is subjected to excessive force on one side or insufficient contact on the other side. The protective separation cylinder 10 is set between the air reservoir 9 and the mounting sleeve. Between the cylinders 8, the extension path of the piston rod 11 through the mounting sleeve 8 is isolated. If metal chips and abrasive dust generated during the grinding process enter the air storage cylinder 9 or the sliding fit area of ​​the piston rod 11, it may increase the extension resistance. The protective separation cylinder 10 is used to reduce the entry of chips into this area, so that the radial floating action of the piston rod 11 remains relatively stable. Thus, the grinding assembly can take into account contact pressure compensation, angle attitude compensation and chip protection during the grinding process of the mounting sleeve 8, thereby improving the stability and consistency of the grinding process of multiple outer peripheral surfaces of the hexagonal steel column.

[0028] Since the steel column body 4 is a hexagonal steel column, its outer circumference is not a continuous arc surface, but is composed of multiple planar areas and edge transition areas between adjacent planes. When the grinding block 17 is rigidly installed, if there are slight protrusions, depressions or posture deviations on the local surface of the steel column body 4, the grinding block 17 is prone to excessive force on one end and insufficient contact on the other end, which will result in local over-grinding, false contact, discontinuous grinding marks or uneven surface roughness. like Figure 5 and Figure 6 As shown, preferably, the fine-tuning grinding structure includes a mounting groove 15, irregularly shaped spring pieces 16, and a grinding block 17; the mounting groove 15 is opened on the side of the mounting plate 14 facing the steel column body 4; two irregularly shaped spring pieces 16 are provided, and the two irregularly shaped spring pieces 16 are symmetrically installed in the mounting groove 15; one end of the two irregularly shaped spring pieces 16 is fixedly connected to the mounting plate 14, and the other end of the two irregularly shaped spring pieces 16 is fixedly connected to the grinding block 17, so that the grinding block 17 can perform micro-stroke elastic floating relative to the mounting plate 14; the two irregularly shaped spring pieces 16 are spaced apart along the length direction of the grinding block 17 to form multi-point elastic support for the grinding block 17, so that the grinding block 17 maintains a relatively stable grinding posture when in contact with the outer peripheral surface of the steel column body 4.

[0029] In this embodiment, two irregularly shaped spring pieces 16 are spaced apart along the length of the grinding block 17 to form multi-point elastic support. When the front or rear end of the grinding block 17 is subjected to a large reaction force, the irregularly shaped spring piece 16 at the corresponding position can elastically yield, while the other irregularly shaped spring piece 16 still provides support for the grinding block 17, thereby limiting the excessive pitching or single-end tilting of the grinding block 17. The mounting groove 15 is used to accommodate the irregularly shaped spring piece 16 and reserve space for its elastic deformation, so that the micro-stroke floating of the grinding block 17 is relatively stable. Through the radial floating of the air reservoir 9 and piston rod 11, the attitude adjustment of the ball head seat 12 and ball joint seat 13, and the local elastic compensation of the irregularly shaped spring piece 16, the grinding assembly can adapt to the local deviation of the steel column body 4 in the enveloping grinding environment, reducing the possibility of local over-grinding, false contact, and discontinuous grinding texture.

[0030] Example 3 If multiple grinding components are arranged in a straight line along the axial direction of the mounting sleeve 8, a relatively concentrated boundary position is easily formed between the working areas of adjacent grinding components. When the mounting sleeve 8 moves along the axial direction of the steel column body 4, this boundary position will form a relatively fixed linear trajectory on the outer peripheral surface of the steel column body 4, which may cause surface brightness differences, local roughness changes or uneven grinding transition. Therefore, several grinding components are arranged in an obliquely staggered overlapping manner, mainly to solve the problem of joint marks, linear grinding marks or local missed grinding caused by the discontinuity of the grinding area boundary between adjacent grinding components. like Figure 4As shown, based on Embodiment 1, the present invention provides a technical solution: preferably, a plurality of grinding components are arranged in multiple groups along the axial direction of the mounting sleeve 8, and each group of grinding components includes a plurality of grinding components spaced apart along the circumference of the mounting sleeve 8. Two adjacent grinding components are staggered in the axial direction of the mounting sleeve 8, and the two adjacent grinding components overlap at least partially in the axial projection area of ​​the steel column body 4, so that a number of grinding components form an axially staggered overlapping grinding coverage path.

[0031] In this embodiment, several grinding components are divided into multiple groups along the axial direction of the mounting sleeve 8. Each group of grinding components includes multiple grinding components spaced apart circumferentially along the mounting sleeve 8. Adjacent groups of grinding components are staggered in the axial direction of the mounting sleeve 8, and adjacent groups of grinding components overlap at least partially in the axial projection area of ​​the steel column body 4, forming an axially staggered overlapping grinding coverage path. This axial staggered overlap does not rely on the circumferential relative movement between the steel column body 4 and the mounting sleeve 8 to form an oblique grinding trajectory, but rather through the staggered arrangement of multiple groups of grinding components in the axial direction of the mounting sleeve 8, so that the boundary areas of adjacent grinding components are dispersedly covered in the length direction of the steel column body 4. After the staggered overlap is adopted, the first group of grinding components completes the main grinding, and the second group of grinding components supplements and trims its edge transition area, so that the transition between adjacent grinding areas is relatively smooth.

[0032] Under the above arrangement, the same axial area is not continuously ground by the same grinding block. Instead, it is intermittently overlapped and trimmed by different sets of grinding components. This intermittent overlap can disperse the action position of the grinding boundary, reduce the possibility that the same position will be subjected to the edge action of the same grinding component for a long time, and provide space for the transfer of debris and heat between adjacent action areas. In this way, it can weaken the linear marks generated at the grinding boundary position, reduce the missed grinding and abrupt changes between adjacent grinding areas, and improve the continuity and uniformity of the grinding process of the outer circumference of the steel column body 4.

[0033] like Figure 5 As shown, preferably, the grinding block 17 includes a left grinding block 171, a central grinding block 172, and a right grinding block 173; the left grinding block 171, the central grinding block 172, and the right grinding block 173 are arranged sequentially along the width direction of the grinding block 17; the central grinding block 172 is used to contact the outer peripheral plane area of ​​the steel column body 4, and the left grinding block 171 and the right grinding block 173 are respectively used to contact the edge transition areas on both sides of the outer peripheral plane area.

[0034] In this embodiment, the three components are arranged sequentially along the width of the grinding block 17, forming a main grinding area and two transition trimming areas on both sides. The central grinding block 172 mainly undertakes the main grinding of the corresponding outer peripheral plane area, while the left grinding block 171 and right grinding block 173 are used to trim the edges on both sides of the plane, the edge transition area, and the overlapping boundaries between adjacent grinding components. Due to the axial misalignment of multiple grinding components, the left grinding block 171 and right grinding block 173 do not necessarily always correspond to the fixed edge position in actual work, but rather participate more in boundary overlap and low-pressure transition processing. To accommodate the contact differences between the planar area and the edge transition area, the downward pressure or elastic support stiffness of the central grinding block 172 can be greater than that of the left grinding block 171 and the right grinding block 173. The central grinding block 172 maintains relatively stable planar contact under higher support stiffness, bearing the main material removal burden. The left grinding block 171 and the right grinding block 173, under lower support stiffness, flexibly trim the edge transition or overlapping areas. This reduces the problem of grinding dead angles at the edges of the integral grinding block and avoids excessive cutting action from the two grinding blocks at the edge positions, thus reducing the risk of over-grinding of the edges. Because the multiple grinding components are arranged axially in a staggered manner, the same axial area is not always continuously acted upon by the same grinding component, but rather segmented by the intermittent overlapping of the preceding and following grinding components. This intermittent arrangement allows the same area to be trimmed after being acted upon by a single grinding component. Then, the left grinding block 171 or the right grinding block 173 of another staggered grinding assembly further refines the edge, thus changing the grinding boundary from a concentrated action to a dispersed action. Compared with a completely continuous and overlapping grinding method, this intermittent overlapping method can reduce the possibility of the same area being continuously ground by the same grinding block for a long time, thereby reducing local heat accumulation and local over-grinding. At the same time, the intermittent arrangement can also create a certain release space between adjacent grinding assemblies, allowing grinding debris and grinding heat to be buffered and transferred between adjacent action areas, reducing the possibility of debris being trapped in the same grinding contact area for a long time. Thus, the left grinding block 171 and the right grinding block 173 not only play an edge-refining role in the staggered overlapping area, but also, in conjunction with the axial intermittent arrangement of multiple sets of grinding assemblies, weaken the grinding joint, reduce the degree of local repeated grinding, and improve the distribution of heat and debris during the grinding process.

[0035] Since the steel column body 4 is a hexagonal steel column, its outer circumference includes not only a relatively large planar area, but also an edge transition area between adjacent planes. The contact area, stress state and allowable grinding amount of the planar area and the edge transition area are not the same. If the three adopt the same support stiffness and the same downward pressure, it is easy to cause insufficient grinding of the planar area or excessive grinding of the edge area. like Figure 5As shown, preferably, the irregularly shaped spring piece 16 includes a first connecting section fixedly connected to the mounting plate 14, a second connecting section fixedly connected to the grinding block 17, and an elastically bent section connecting the first connecting section and the second connecting section; the left grinding block 171, the central grinding block 172, and the right grinding block 173 are elastically connected to the mounting plate 14 through corresponding irregularly shaped spring pieces 16, and the elastic support stiffness of the irregularly shaped spring piece 16 corresponding to the central grinding block 172 is greater than the elastic support stiffness of the irregularly shaped spring pieces 16 corresponding to the left grinding block 171 and the right grinding block 173; the central grinding block 172 is used to stably contact the outer peripheral plane area of ​​the steel column body 4 under the action of higher elastic support stiffness, and the left grinding block 171 and the right grinding block 173 are used to flexibly contact the edge transition areas on both sides of the outer peripheral plane area under the action of lower elastic support stiffness.

[0036] In this embodiment, the irregularly shaped spring piece 16 includes a first connecting section, a second connecting section, and an elastically bent section located between the two. The first connecting section is connected to the mounting plate 14, and the second connecting section is connected to the corresponding grinding block. The elastically bent section generates controllable elastic deformation when subjected to force. By adjusting the length, thickness, shape, or number of the elastically bent sections, the central grinding block 172, the left grinding block 171, and the right grinding block 173 can obtain different elastic support stiffnesses. By changing the length, thickness, bending shape, or number of the elastically bent sections, the irregularly shaped spring pieces 16 at different positions can form different elastic support stiffnesses. Thus, the central grinding block 172, the left grinding block 171, and the right grinding block 173 can form different force responses on the same mounting plate 14, giving the main grinding area and the edge trimming area different grinding characteristics.

[0037] Since the mounting sleeve 8 is fitted around the outer periphery of the steel column body 4, a relatively closed grinding space is formed between the grinding component and the steel column body 4. Metal chips and abrasive dust generated during the grinding process are easily trapped in the inner cavity of the mounting sleeve 8. If the chips cannot be discharged in time, they may enter the contact area between the grinding block 17 and the steel column body 4, causing secondary scratches, uneven grinding marks, increased local friction, and increased local temperature. like Figure 3 As shown, preferably, a chip removal groove 18 is provided between adjacent grinding components. The chip removal groove 18 is opened on the cylinder wall of the mounting sleeve 8 and penetrates the cylinder wall of the mounting sleeve 8 radially so that the inner cavity of the mounting sleeve 8 is connected to the external space. The end of the chip removal groove 18 near the inner cavity of the mounting sleeve 8 forms a flared part. The opening size of the flared part gradually decreases in the direction away from the inner cavity of the mounting sleeve 8 so as to guide the chips generated during the grinding process into the chip removal groove 18. The flared part is a funnel-shaped chip guide orifice. The large end of the funnel-shaped chip guide orifice is set towards the steel column body 4, and the small end is connected to the main groove section of the chip removal groove 18.

[0038] In this embodiment, a chip removal groove 18 is provided between adjacent grinding components. The chip removal groove 18 penetrates the cylinder wall radially along the mounting sleeve 8, making the inner cavity of the mounting sleeve 8 communicate with the external space. Since the mounting sleeve 8 has a covering structure, chips are easily trapped in the inner cavity and enter the grinding contact area. The chip removal groove 18 is provided between adjacent grinding components, so that chips can obtain a discharge path in the gap between adjacent working areas, reducing the possibility of them repeatedly entering between the grinding block 17 and the steel column body 4; the chip removal groove 18 is close to the mounting sleeve 8. One end of the inner cavity of the sleeve 8 forms a flared section, which is a funnel-shaped chip guide opening. The larger end faces the steel column body 4, and the smaller end is connected to the main groove section of the chip removal groove 18. This structure increases the receiving area inside the chip removal groove 18, making it easier for chips to enter the groove when they are close to the groove opening and be guided to the main groove section before being discharged outward. The chip removal groove 18 rotates and moves axially synchronously with the sleeve 8. Combined with the release space between adjacent grinding components, it helps to reduce the long-term retention of chips in the fixed lower area or local contact area.

[0039] Example 4 Since the grinding component inside the mounting sleeve 8 needs to continuously correspond to the corresponding outer circumferential surface of the steel column body 4, if the mounting sleeve 8 only moves axially and cannot rotate synchronously, angular misalignment may easily occur between the grinding component and the outer circumferential surface of the steel column body 4, causing the grinding component to deviate from the predetermined grinding area; if the mounting sleeve 8 is directly rigidly connected to the axial feed mechanism, the rotational movement of the mounting sleeve 8 may be transmitted to the moving seat 21, the slide rod 6 or the threaded rod 7, thereby affecting the stability of the axial feed. like Figure 2As shown, based on Embodiment 1, the present invention provides a technical solution: Preferably, the follower structure includes a slide rod 6, a threaded rod 7, a movable seat 21, a rotating sleeve 20, an extrusion wheel 23, and a connecting column 19; the slide rod 6 and the threaded rod 7 are arranged parallel between two fixed frames 2, with both ends of the slide rod 6 fixedly connected to the two fixed frames 2 respectively, and both ends of the threaded rod 7 rotatably connected to the two fixed frames 2 respectively; the movable seat 21 is slidably mounted on the slide rod 6 and threadedly engaged with the threaded rod 7, so as to reciprocate along the length direction of the slide rod 6 when the threaded rod 7 rotates; the rotating sleeve 20 is rotatably mounted on the movable seat 21 and can rotate relative to the movable seat 21 around the axis of the steel column body 4; extrusion wheels 23 are rotatably mounted at both ends of the movable seat 21. The pressure roller 23 and the extrusion roller 23 roll against the outer circumferential surface of the rotating sleeve 20 to provide rotational support and radial limit for the rotating sleeve 20. The rotating sleeve 20 is sleeved on the outer circumference of the mounting sleeve 8, and the rotating sleeve 20 and the mounting sleeve 8 are fixedly connected by the connecting column 19 so that the mounting sleeve 8 can rotate synchronously with the rotating sleeve 20 and reciprocate along the axial direction of the steel column body 4 with the moving seat 21. The bottom end of the mounting sleeve 8 is symmetrically slidably connected with a square steel pipe 22, and the two ends of the square steel pipe 22 are respectively fixedly connected to the output end of the clamping rotation mechanism 3. A first driving device 24 is fixedly installed on one side of the fixed frame 2, and the output end of the first driving device 24 passes through the side wall of the fixed frame 2 and is fixedly connected to the end of the threaded rod 7.

[0040] In this embodiment, during the grinding process, the mounting sleeve 8 rotates synchronously with the steel column body 4 through the square steel pipe 22 and the clamping seat 30. The axial feed is undertaken by the moving seat 21, and the rotation support is undertaken by the rotating sleeve 20. This allows the axial movement and synchronous rotation to be completed at different structural levels. The moving seat 21 is only responsible for axial movement, while the rotating sleeve 20 can rotate relative to the moving seat 21 around the axis of the steel column body 4. The mounting sleeve 8 is driven to rotate synchronously and move axially through the connecting column 19.

[0041] The extrusion roller 23 rolls against the outer circumferential surface of the rotating sleeve 20, forming a slewing support and radial limit for the rotating sleeve 20. During the grinding process, the reaction force of the grinding assembly is transmitted to the rotating sleeve 20 through the mounting sleeve 8 and the connecting column 19. The extrusion roller 23 restricts the radial runout of the rotating sleeve 20 and reduces the rotational resistance through rolling contact, so that the mounting sleeve 8 maintains a relatively stable coaxial state during axial reciprocating movement and synchronous rotation. This structure separates the thread feed, slewing support and radial limit, reducing the interference of the rotational movement of the mounting sleeve 8 on the thread feed structure, thereby improving the corresponding stability between the grinding assembly and the outer circumferential surface of the steel column body 4.

[0042] Because the reciprocating grinding mechanism 5 adopts a sleeve-type encasing structure, the multiple grinding components inside the mounting sleeve 8 can act on multiple outer peripheral surfaces of the steel column body 4 respectively. Under this six-sided synchronous grinding method, the metal chips and abrasive dust generated by the grinding components in the upper region during the grinding process are easily moved to the lower region of the mounting sleeve 8 under the action of gravity. If the mounting sleeve 8 and the steel column body 4 maintain a fixed angular state during the grinding process, the lower grinding components will be in the chip receiving position for a long time, and the chips are easily trapped in the lower grinding components. The actual contact state of the lower grinding assembly changes between the grinding block 17 and the steel column body 4. After the debris accumulates at the lower grinding assembly, it may have two effects: First, the debris will occupy the effective contact space between the grinding block 17 and the outer peripheral surface of the steel column body 4, which will weaken the actual grinding effect of the lower grinding assembly and result in local under-grinding. Second, when hard metal debris is trapped in the grinding contact area, it may form three-body friction, causing secondary scratches on the surface of the steel column body 4, uneven local roughness, or abnormal grinding marks. like Figure 7 As shown, preferably, the clamping and rotating mechanism 3 includes a base 25, and two bases 25 are provided. The two bases 25 are respectively fixedly installed on the top of the corresponding fixed frame 2. A top seat 26 is provided above the base 25 and is detachably connected to the base 25 by a bolt structure. A second driving device 29 is fixedly installed on one side of one of the fixed frames 2. At least two driving wheels 27 are symmetrically rotated and installed on the inner side of the base 25. The second driving device 29 is connected to the corresponding driving wheel 27 in a transmission connection. At least two pressure wheels 28 are symmetrically rotated and installed on the inner side of the top seat 26. A clamping seat 30 is provided between the driving wheel 27 and the pressure wheel 28 and rolls in contact with the driving wheel 27 and the pressure wheel 28 respectively, so that the clamping seat 30 can rotate relative to the base 25 and the top seat 26 under the drive of the driving wheel 27.

[0043] In this embodiment, the drive wheel 27 transmits rotational power to the clamping seat 30 under the action of the second drive device 29. The clamping seat 30 then drives the steel column body 4 to rotate synchronously. The pressure wheel 28 and the drive wheel 27 together form a rolling support and radial limit for the clamping seat 30, so that the clamping seat 30 maintains a relatively stable rotational state while transmitting rotational power. This stable rotational state helps to reduce the end wobble of the steel column body 4, thereby reducing the contact pressure change caused by axial fluctuation when the steel column body 4 is ground inside the mounting sleeve 8. At the same time, the top seat 26 and the base 25 are detachably connected, so that the clamping seat 30 can obtain clearance space when clamping the steel column body 4, and after locking, the pressure wheel 28 forms a pressure support for the clamping seat 30. Thus, the clamping rotation mechanism 3 can not only meet the loading and unloading requirements of the steel column body 4, but also maintain the rotational support stability of the clamping seat 30 during the grinding process. In addition, the clamping seat 30 is also a semi-circular setting that is fixedly connected by bolts.

[0044] The clamping and rotating mechanism 3 not only drives the steel column body 4 to rotate, but also works with the reciprocating grinding mechanism 5 to improve the chip distribution during simultaneous six-sided grinding. After the steel column body 4 and the mounting sleeve 8 rotate synchronously, the positions of each grinding component relative to the direction of gravity change alternately. The grinding components that were originally located at the bottom will not remain in the fixed chip-bearing area for a long time, thereby reducing the accumulation of chips in the same position. The rolling support of the drive wheel 27 and the clamping wheel 28 on the clamping seat 30 also helps to reduce end sway, keeping the axial position of the steel column body 4 relatively stable during the grinding process.

[0045] like Figure 7 As shown, preferably, the inner periphery of the clamping seat 30 is formed with an internal hexagonal clamping cavity, and the cross-sectional shape of the internal hexagonal clamping cavity is adapted to the outer periphery shape of the end of the steel column body 4, so as to circumferentially limit the steel column body 4. The cavity wall surface of the internal hexagonal clamping cavity is provided with an elastic damping liner. The elastic damping liner is used to elastically abut against the outer peripheral surface of the end of the steel column body 4 to improve the clamping stability between the clamping seat 30 and the steel column body 4.

[0046] In this embodiment, the inner circumference of the clamping seat 30 forms an internal hexagonal clamping cavity, which is adapted to the outer circumferential shape of the end of the steel column body 4. After the end of the steel column body 4 enters the internal hexagonal clamping cavity, the clamping cavity wall forms a circumferential limit on it, so that the torque of the clamping seat 30 can be stably transmitted to the steel column body 4, reducing the angular slippage that may occur when relying solely on friction clamping to transmit torque. An elastic damping liner is provided on the surface of the cavity wall of the internal hexagonal clamping cavity. When there are dimensional tolerances, edge burrs, or slight shape and position deviations at the end of the steel column body 4, the elastic damping liner can generate a small amount of compressive deformation to compensate for the local gap between the outer circumferential surface of the end and the cavity wall, making the clamping contact more uniform. When the grinding load fluctuation is transmitted to the end clamping position, the elastic damping liner can also buffer some minor impacts, reducing the possibility of direct collision between the end of the steel column body 4 and the rigid cavity wall. Thus, the internal hexagonal clamping cavity provides circumferential limiting, and the elastic damping liner provides contact compensation and damping buffer, together maintaining the synchronous rotational stability between the clamping seat 30 and the steel column body 4.

[0047] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A grinding and polishing equipment for hexagonal steel columns, characterized in that, include: A truss (1) is provided with a fixed frame (2) symmetrically fixed at the top of the truss (1). A clamping and rotating mechanism (3) is installed on the top of each of the two fixed frames (2). The two clamping and rotating mechanisms (3) are arranged opposite to each other. The steel column body (4) is disposed between the two clamping and rotating mechanisms (3). The two ends of the steel column body (4) are respectively connected to the output end of the corresponding clamping and rotating mechanism (3) so as to drive the steel column body (4) to rotate around its own axis through the two clamping and rotating mechanisms (3). A reciprocating grinding mechanism (5) is disposed between the two clamping and rotating mechanisms (3) and sleeved on the outer periphery of the steel column body (4). The reciprocating grinding mechanism (5) can move back and forth along the axial direction of the steel column body (4) to continuously grind the outer periphery surface of the steel column body (4) during the rotation of the steel column body (4). The reciprocating grinding mechanism (5) includes an installation sleeve (8) sleeved on the outer periphery of the steel column body (4), and a plurality of grinding components are arranged in a regular hexagonal pattern along the circumference inside the installation sleeve (8). The plurality of grinding components are respectively set to multiple outer peripheral surfaces of the steel column body (4) for synchronous grinding of multiple outer peripheral surfaces during the rotation of the steel column body (4). A follower structure for driving the installation sleeve (8) to reciprocate is installed on the outside of the installation sleeve (8). Each of the aforementioned grinding components includes an air reservoir (9), a protective separation cylinder (10), a piston rod (11), a ball head seat (12), a ball joint seat (13), a mounting plate (14), and a fine-tuning grinding structure; The gas storage cylinder (9) is fixedly installed on the outer surface of the mounting sleeve (8), and a plurality of the gas storage cylinders (9) are arranged at intervals along the circumference of the mounting sleeve (8); The protective separation cylinder (10) is disposed between the gas storage cylinder (9) and the mounting sleeve (8), and one end of the protective separation cylinder (10) is connected to the gas storage cylinder (9), and the other end is connected to the outer surface of the mounting sleeve (8); The piston rod (11) is slidably disposed in the gas storage cylinder (9), and the piston rod (11) extends radially along the mounting sleeve (8). One end of the piston rod (11) passes through the protective separation cylinder (10) and the mounting sleeve (8) in sequence, and extends into the inner cavity of the mounting sleeve (8). The ball head seat (12) is fixedly installed at one end of the piston rod (11) that extends into the inner cavity of the mounting sleeve (8), and the ball joint seat (13) is omnidirectionally rotatable with the ball head seat (12); The mounting plate (14) is fixedly installed on the side of the ball joint (13) facing the steel column body (4), and the fine-tuning grinding structure is installed on the side of the mounting plate (14) facing the steel column body (4) for contacting the outer peripheral surface of the steel column body (4) and grinding. The fine-tuning polishing structure includes a mounting groove (15), an irregularly shaped spring (16), and a polishing block (17). The mounting groove (15) is opened on the side of the mounting plate (14) facing the steel column body (4); Two irregularly shaped spring pieces (16) are provided, and the two irregularly shaped spring pieces (16) are symmetrically installed in the mounting groove (15); One end of each of the two irregularly shaped spring pieces (16) is fixedly connected to the mounting plate (14), and the other end of each of the two irregularly shaped spring pieces (16) is fixedly connected to the grinding block (17), so that the grinding block (17) can perform micro-stroke elastic floating relative to the mounting plate (14). The two irregularly shaped spring pieces (16) are spaced apart along the length direction of the grinding block (17) to form multi-point elastic support for the grinding block (17), so that the grinding block (17) maintains a relatively stable grinding posture when it contacts the outer peripheral surface of the steel column body (4). The grinding components are arranged in multiple groups along the axial direction of the mounting sleeve (8), and each group of grinding components includes multiple grinding components spaced apart along the circumferential direction of the mounting sleeve (8). The two adjacent sets of grinding components are staggered in the axial direction of the mounting sleeve (8), and the two adjacent sets of grinding components overlap at least partially in the axial projection area of ​​the steel column body (4), so that the grinding components form an axially staggered overlapping grinding coverage path.

2. The hexagonal steel column grinding and polishing equipment according to claim 1, characterized in that: The polishing block (17) includes a left polishing block (171), a central polishing block (172), and a right polishing block (173); the left polishing block (171), the central polishing block (172), and the right polishing block (173) are arranged sequentially along the width direction of the polishing block (17); The central grinding block (172) is used to contact the outer peripheral plane area of ​​the steel column body (4), and the left grinding block (171) and the right grinding block (173) are respectively used to contact the edge transition areas on both sides of the outer peripheral plane area.

3. The hexagonal steel column grinding and polishing equipment according to claim 2, characterized in that: The irregularly shaped spring sheet (16) includes a first connecting section fixedly connected to the mounting plate (14), a second connecting section fixedly connected to the grinding block (17), and an elastic bending section connected between the first connecting section and the second connecting section; The left grinding block (171), the central grinding block (172), and the right grinding block (173) are elastically connected to the mounting plate (14) through corresponding irregularly shaped spring pieces (16), and the elastic support stiffness of the irregularly shaped spring piece (16) corresponding to the central grinding block (172) is greater than that of the irregularly shaped spring piece (16) corresponding to the left grinding block (171) and the right grinding block (173). The central grinding block (172) is used to make stable contact with the outer peripheral plane area of ​​the steel column body (4) under the action of high elastic support stiffness, and the left grinding block (171) and the right grinding block (173) are used to make flexible contact with the edge transition areas on both sides of the outer peripheral plane area respectively under the action of low elastic support stiffness.

4. The hexagonal steel column grinding and polishing equipment according to claim 3, characterized in that: A chip removal groove (18) is provided between adjacent grinding components. The chip removal groove (18) is opened on the cylinder wall of the mounting sleeve (8) and penetrates the cylinder wall of the mounting sleeve (8) radially so that the inner cavity of the mounting sleeve (8) is connected to the external space. The end of the chip removal groove (18) near the inner cavity of the mounting sleeve (8) forms a flared part. The opening size of the flared part gradually decreases in the direction away from the inner cavity of the mounting sleeve (8) so as to guide the debris generated during the grinding process into the chip removal groove (18). The flared part is a funnel-shaped chip guide orifice. The large end of the funnel-shaped chip guide orifice is set towards the steel column body (4), and the small end is connected to the main groove section of the chip removal groove (18).

5. The hexagonal steel column grinding and polishing equipment according to claim 4, characterized in that: The follower structure includes a slide bar (6), a threaded rod (7), a movable seat (21), a rotating sleeve (20), a pressing wheel (23), and a connecting column (19). The slide rod (6) and the threaded rod (7) are arranged in parallel between the two fixed frames (2). The two ends of the slide rod (6) are fixedly connected to the two fixed frames (2) respectively, and the two ends of the threaded rod (7) are rotatably connected to the two fixed frames (2) respectively. The movable seat (21) is slidably mounted on the slide rod (6) and threadedly engaged with the threaded rod (7) so as to reciprocate along the length direction of the slide rod (6) when the threaded rod (7) rotates; The rotating sleeve (20) is rotatably mounted on the movable seat (21) and can rotate relative to the movable seat (21) about the axis of the steel column body (4); The extrusion wheel (23) is rotatably mounted on both ends of the movable seat (21). The extrusion wheel (23) rolls against the outer circumferential surface of the rotating sleeve (20) to provide rotational support and radial limit for the rotating sleeve (20). The rotating sleeve (20) is sleeved on the outer periphery of the mounting sleeve (8), and the rotating sleeve (20) and the mounting sleeve (8) are fixedly connected by a connecting column (19) so that the mounting sleeve (8) can rotate synchronously with the rotating sleeve (20) and reciprocate along the axial direction of the steel column body (4) with the moving seat (21). The bottom end of the mounting sleeve (8) is symmetrically slidably connected to a square steel pipe (22), and both ends of the square steel pipe (22) are fixedly connected to the output end of the clamping and rotating mechanism (3); A first driving device (24) is fixedly installed on one side of the fixed frame (2), and the output end of the first driving device (24) passes through the side wall of the fixed frame (2) and is fixedly connected to the end of the threaded rod (7).

6. The hexagonal steel column grinding and polishing equipment according to claim 5, characterized in that: The clamping and rotating mechanism (3) includes a base (25), which is configured as two bases (25). The two bases (25) are respectively fixedly installed on the top of the corresponding fixed frame (2). A top seat (26) is provided above the base (25) and is detachably connected to the base (25) by a bolt structure. A second driving device (29) is fixedly installed on one side of one of the fixed frames (2). At least two driving wheels (27) are symmetrically rotated on the inner side of the base (25). The second driving device (29) is connected to the corresponding driving wheel (27) in a transmission connection. At least two pressure wheels (28) are symmetrically rotated on the inner side of the top seat (26). A clamping seat (30) is provided between the driving wheel (27) and the pressure wheel (28) and rolls in contact with the driving wheel (27) and the pressure wheel (28) respectively, so that the clamping seat (30) can rotate relative to the base (25) and the top seat (26) under the drive of the driving wheel (27).

7. The hexagonal steel column grinding and polishing equipment according to claim 6, characterized in that: The inner periphery of the clamping seat (30) is formed with an internal hexagonal clamping cavity, and the cross-sectional shape of the internal hexagonal clamping cavity is adapted to the outer periphery shape of the end of the steel column body (4) to circumferentially limit the steel column body (4); The cavity wall surface of the internal hexagonal clamping cavity is provided with an elastic damping liner. The elastic damping liner is used to elastically abut against the outer peripheral surface of the end of the steel column body (4) to improve the clamping stability between the clamping seat (30) and the steel column body (4).

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