External cylindrical honing apparatus

Abstract

The utility model discloses a cylindrical honing equipment, including equipment main body and support mechanism, equipment main body includes grinding machine body, clamping device, honing device, and clamping device and honing device all are located in the grinding machine body, and clamping device is used for clamping work piece at end portion, and honing device is used for honing processing along the length direction of work piece, and support mechanism is located on the processing path of honing device and includes lifting drive part and support seat, and lifting drive part is fixedly arranged and lifting end drive connects support seat, and lifting drive part is used for driving support seat to descend under the condition that honing device passes through support mechanism to remove the support to work piece and can supply honing device to pass, then the cylindrical honing equipment can complete honing processing through once clamping, and the position of work piece does not need adjusting in the middle, thereby avoiding the deformation of work piece due to its own gravity, and the honing efficiency and the quality of finished product are improved.

Description

Technical Field

[0001] This utility model belongs to the field of grinding technology, specifically relating to an external cylindrical honing device. Background Technology

[0002] Honing is a finishing process that uses a honing head with an embedded honing stone to finish a workpiece by combining rotation and reciprocating motion. Typically, one end of the workpiece is clamped and fixed by a chuck connected to a drive motor, while the other end is subjected to axial pressure by a clamping mechanism. The honing head with the honing stone is fitted onto the outer circumference of the workpiece. While the motor drives the workpiece to rotate, the honing head reciprocates along the workpiece's axis. The cutting action of the honing stone removes excess material from the workpiece surface to achieve high-precision dimensions, shape, and surface roughness requirements.

[0003] Generally, workpieces are fixed only by chucks and clamping mechanisms at both ends of the grinding machine. This fixing method is only suitable for machining small shaft workpieces. For large shaft workpieces, such as extra-long hydraulic cylinder piston rods with a length of 5-20m, a rod diameter of 190-600mm, and a maximum weight of 15 tons, if only the piston rod is supported at both ends, the piston rod is prone to significant deformation under its own weight, making it difficult to guarantee machining accuracy. Therefore, when honing such large and small shaft workpieces, a support base is also required in the middle. Although the support base solves the problem of workpiece deformation, it also restricts the movement of the honing head. Therefore, for large shaft workpieces, only segmented honing can be used, that is, the workpiece is divided into multiple machining segments. After each machining segment is honed, the workpiece position is adjusted before honing the next machining segment. This method makes it difficult to control the dimensions of the joints between machining segments, resulting in unstable finished product quality, and also has problems such as low honing efficiency and easy formation of tool marks on the workpiece surface. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this utility model provides an external cylindrical honing equipment, which aims to solve the technical problems of unstable finished product quality and low honing efficiency caused by the defects of existing honing methods.

[0005] To achieve the above objectives, this utility model provides an external cylindrical honing device, including a main body and a support mechanism. The main body includes a grinding machine body, a clamping device, and a honing device. Both the clamping device and the honing device are located within the grinding machine body. The clamping device is used to clamp the workpiece at its end, and the honing device is used to perform honing along the length of the workpiece. The support mechanism is located on the processing path of the honing device and includes a lifting drive and a support base. The lifting drive is fixedly installed, and its lifting end is driven to connect to the support base. The lifting drive is used to drive the support base to descend when the honing device passes through the support mechanism, so as to remove the support for the workpiece and allow the honing device to pass through.

[0006] In this embodiment of the utility model, the honing device includes a translation drive assembly, a slide rail, and a honing seat. The slide rail is fixedly mounted on the grinding machine body. The bottom of the honing seat is provided with a slider that is slidably connected to the slide rail. The slide rail and the slider are offset to one side of the honing seat so as to be staggered from the support mechanism. The translation drive assembly is used to drive the honing seat to move along the slide rail.

[0007] In this embodiment of the utility model, the translation drive assembly is arranged on the same side as the slide rail and includes a travel motor, a travel gear and a fixed rack. The fixed rack is arranged parallel to the slide rail on the grinding machine body. The travel motor is arranged on the honing seat. The output shaft of the travel motor is arranged downward to drive the travel gear. The travel gear is meshed with the fixed rack.

[0008] In this embodiment of the utility model, the honing stand includes a stand body and a honing module for honing the workpiece. The stand body is provided with a slider for moving along a slide rail under the drive of a translation drive component. The stand body is provided with a honing space for the workpiece to pass through. There are two honing modules, which are arranged relatively at intervals in the honing space and can move towards each other or away from each other.

[0009] In this embodiment of the utility model, the honing base further includes a first adjustment drive assembly, which includes a mounting base plate, a bidirectional ball screw, and a first adjustment drive component. The mounting base plate is located at the bottom of the honing space, and two honing modules are movably mounted on the mounting base plate. The bidirectional ball screw is mounted on the base body, and two nuts on the bidirectional ball screw are respectively connected to the two honing modules one by one. The first adjustment drive component drives the bidirectional ball screw.

[0010] In this embodiment of the utility model, the honing module includes a second adjustment drive, a movable frame, and two honing parts. The movable frame is movably disposed along the mounting base plate, and the two honing parts are disposed on the movable frame at a distance from each other. The second adjustment drive is disposed on the movable frame and is used to drive the two honing parts to move closer to each other or further away from each other.

[0011] In this embodiment of the invention, the honing base also includes a buffer, and the mounting base plate is connected to the base body through the buffer.

[0012] In this embodiment of the utility model, the lifting drive component is a telescopic cylinder, and the support base includes a lower base body, an upper base body and a guide rod. The lower base body is fixedly connected to the cylinder of the telescopic cylinder, the upper base body is fixedly connected to the piston rod of the telescopic cylinder, and the guide rod extends downward from the upper base body and passes through the lower base body.

[0013] In this embodiment of the utility model, the upper seat is provided with a first support roller seat and a second support roller seat on the side facing the workpiece. The first support roller seat and the second support roller seat are spaced apart along the width direction of the workpiece and are used to roll and abut against the workpiece.

[0014] In this embodiment of the utility model, the upper seat is provided with a threaded adjusting rod. The threaded adjusting rod has a first threaded section and a second threaded section with opposite directions of rotation along the width direction of the workpiece. The first threaded section is threadedly connected to the first support roller seat, and the second threaded section is threadedly connected to the second support roller seat.

[0015] In this embodiment of the utility model, the upper seat includes a connecting bottom block, an intermediate pad block, and a supporting top block that are detachably connected from bottom to top. The connecting bottom block is connected to a piston rod and a guide rod, and the supporting top block is provided with a first supporting roller seat and a second supporting roller seat.

[0016] In this embodiment of the utility model, the number of support mechanisms is at least two, and the at least two support mechanisms are arranged sequentially at intervals along the length direction of the workpiece. The external honing equipment also includes a control device, which is communicatively connected to the lifting drive of the at least two support mechanisms, and is used to control the lifting drive to drive the support seat to descend when the honing device is close to the support mechanism, and to control the lifting drive to drive the support seat to rise when the honing device is far away from the support mechanism.

[0017] Through the above technical solution, the external honing equipment provided by this utility model embodiment has the following beneficial effects:

[0018] When using the aforementioned external cylindrical honing equipment, the main body of the equipment is used to hone the workpiece. A clamping device clamps the workpiece at its end and drives it to rotate synchronously. While the workpiece rotates, the honing device hones along the length of the workpiece. A support mechanism is located on the processing path of the honing device to support the workpiece and prevent deformation under its own weight. The support mechanism includes a lifting drive and a support base. Initially, the lifting drive drives the support base to lift and support the workpiece. When the honing device passes the support mechanism, the lifting drive drives the support base to descend, separating the support base from the support frame, allowing the honing device to smoothly pass along the workpiece. After the honing device passes, the lifting drive drives the support base to reset and re-support the workpiece. This external honing equipment allows for honing to be completed in a single setup without requiring adjustments to the workpiece's position. This avoids deformation of the workpiece due to its own weight and improves honing efficiency and the quality of the finished product.

[0019] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a top view of an external honing device according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the honing device according to an embodiment of the present invention;

[0023] Figure 3 yes Figure 3 A detailed structural schematic diagram of the honing apparatus in the illustrated embodiment;

[0024] Figure 4 yes Figure 4 A structural schematic diagram of the support mechanism according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures

[0026] Detailed Implementation

[0027] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0028] The external honing equipment of this utility model is described below with reference to the accompanying drawings.

[0029] like Figure 1 and Figure 4 As shown, this utility model provides an external cylindrical honing device, comprising:

[0030] The main body of the equipment includes a grinding machine body 1, a clamping device 2, and a honing device 3. Both the clamping device 2 and the honing device 3 are located inside the grinding machine body 1. The clamping device 2 is used to clamp the workpiece at the end, and the honing device 3 is used to perform honing along the length of the workpiece.

[0031] The support mechanism 4 is located on the processing path of the honing device 3 and includes a lifting drive 41 and a support base 42. The lifting drive 41 is fixedly installed and the lifting end is driven to connect to the support base 42. The lifting drive 41 is used to drive the support base 42 to descend when the honing device 3 passes through the support mechanism 4, so as to remove the support on the workpiece and allow the honing device 3 to pass through.

[0032] When using the aforementioned external cylindrical honing equipment, the main body of the equipment is used to hone the workpiece. The clamping device 2 clamps the workpiece at its end and drives it to rotate synchronously. While the workpiece rotates, the honing device 3 hones along the length of the workpiece. The support mechanism 4 is located on the processing path of the honing device 3 to support the workpiece and prevent deformation under its own weight. The support mechanism 4 includes a lifting drive 41 and a support base 42. Initially, the lifting drive 41 drives the support base 42 to lift and support the workpiece. When the honing device 3 passes the support mechanism 4, the lifting drive 41 drives the support base 42 to descend, separating the support base 42 from the support frame, allowing the honing device 3 to smoothly pass along the workpiece. After the honing device 3 passes, the lifting drive 41 drives the support base 42 to reset and re-support the workpiece. This external honing equipment allows for honing to be completed in a single setup without requiring adjustments to the workpiece's position. This avoids deformation of the workpiece due to its own weight and improves honing efficiency and the quality of the finished product.

[0033] like Figure 2 and Figure 3 As shown in this embodiment of the invention, the honing device 3 includes a translation drive assembly 31, a slide rail 32, and a honing seat 33. The slide rail 32 is fixedly mounted on the grinding machine body 1. The bottom of the honing seat 33 is provided with a slider that is slidably connected to the slide rail 32. The slide rail 32 and the slider are offset to one side of the honing seat 33 to avoid interference or collision between the honing seat 33 and the support mechanism 4.

[0034] Specifically, the translation drive assembly 31 can employ various driving methods, such as gear and rack transmission, lead screw and nut 337 transmission, chain transmission, or synchronous belt transmission. In one embodiment of this utility model, the translation drive assembly 31 uses a gear and rack. The translation drive assembly 31 is arranged on the same side as the slide rail 32 and includes a travel motor 311, a travel gear 312, and a fixed rack 313. The fixed rack 313 is arranged parallel to the slide rail 32 on the grinding machine body 1. The travel motor 311 is mounted on the honing base 33. The output shaft of the travel motor 311 is arranged downwards to drive and connect to the travel gear 312. The travel gear 312 meshes with the fixed rack 313. Compared to chain transmission or synchronous belt transmission, using a gear and rack transmission can more accurately control the displacement distance of the translation drive assembly 31, thereby ensuring the accuracy of the honing process. While the lead screw and nut 337 transmission can achieve high precision, the lead screw needs to be specially customized. Especially for workpieces with long machining distances, the cost of custom-made long lead screws is high. In contrast, the gear and rack transmission has less impact on the transmission because the rack is fixed inside the grinding machine body 1. It can also be combined by splicing multiple rack segments, resulting in lower costs.

[0035] Furthermore, the translation drive component 31 can be configured either on the same side as the slide rail 32 or spaced apart from the slide rail 32 by the support mechanism 4. In one embodiment of this utility model, the translation drive component 31 is preferably configured on the same side as the slide rail 32. It is understood that both the slide rail 32 and the rack of the translation drive component 31 need to be mounted on the grinding machine body 1, and the honing seat 33 needs to be spaced apart from the grinding machine body 1. Therefore, the grinding machine body 1 needs to be raised at the location where the slide rail 32 and the rack are mounted. Since the slide rail 32 and the rack are mounted on the same side, only one side of the grinding machine body 1 needs to be equipped with a lifting structure, while the other side is left empty and used for loading and unloading.

[0036] In this embodiment of the invention, the honing stand 33 includes a stand body 331 and honing modules 332 for honing workpieces. The stand body 331 has a slider for moving along a slide rail 32 under the drive of a translation drive assembly 31. The stand body 331 has a honing space 35 through which the workpiece passes. There are two honing modules 332, which are spaced apart relative to each other within the honing space 35 and can move towards or away from each other. When dealing with workpieces with smaller diameters, the two honing modules 332 are controlled to move towards each other; when dealing with workpieces with larger diameters, the two honing modules are controlled to move away from each other, thereby matching the diameter of the workpiece and improving the versatility of the equipment.

[0037] Specifically, the two honing modules 332 can be configured for manual or automatic adjustment. To improve efficiency, in one embodiment of this invention, the honing modules 332 are configured for automatic adjustment. The honing base 33 further includes a first adjustment drive assembly 333, which includes a mounting base plate 334, a bidirectional ball screw 335, and a first adjustment drive component 336. The mounting base plate 334 is located at the bottom of the honing space 35. The two honing modules 332 are movably mounted on the mounting base plate 334. The bidirectional ball screw 335 is mounted on the base body 331. Two nuts 337 on the bidirectional ball screw 335 are respectively connected to the two honing modules 332 one-to-one. The first adjustment drive component 336 drives the bidirectional ball screw 335. In this embodiment, the first adjustment drive component 336 can be a servo motor, which has high-precision speed control and position control characteristics and can accurately drive the bidirectional ball screw 335 to rotate. When the servo motor starts, it drives the bidirectional ball screw 335 to rotate. Since the two nuts 337 on the bidirectional ball screw 335 are connected to the two honing modules 332 in a one-to-one correspondence, and the nuts 337 will move along the screw axis when the screw rotates, the two honing modules 332 will move towards or away from each other on the mounting base plate 334.

[0038] Furthermore, to ensure the smoothness and accuracy of the honing module 332's movement, a guide structure can be provided on the mounting base plate 334. For example, two parallel guide grooves can be formed on the mounting base plate 334, and guide blocks that cooperate with the guide grooves can be correspondingly set on the bottom of the two honing modules 332. In this way, during the movement of the honing module 332, the guide blocks slide within the guide grooves, which can effectively prevent the honing module 332 from shifting and ensure the accuracy of the honing process.

[0039] Furthermore, to monitor the position of the honing device 3 in real time and precisely control the movement of the lifting drive component 41, a displacement sensor can be installed on the honing device 3. The displacement sensor can provide real-time feedback of the honing device 3's position information to the control system. Based on the preset position of the lifting drive component 41, the control system controls the lifting drive component 41 to drive the support base 42 to descend when the honing device 3 approaches the support mechanism 4. Of course, this invention is not limited to this. Based on the travel motor 311, the position of the honing device 3 can also be calculated based on the initial position of the travel motor 311 and the number of rotations of the travel motor 311, thereby controlling the lifting drive component 41.

[0040] Furthermore, to improve the honing effect, a honing module 332 is equipped with two honing parts 339, which perform honing from the upper and lower sides of the workpiece, respectively. Even further, the honing module 332 also includes a second adjusting drive and a moving frame 338. The moving frame 338 is movably mounted along the mounting base plate 334, and the two honing parts 339 are positioned relatively apart on the moving frame 338. The second adjusting drive is located on the moving frame 338 and is used to drive the two honing parts 339 to move closer together or further apart. This allows for flexible adjustment of the distance between the two honing parts 339 to accommodate workpieces of different diameters, thereby further improving the applicability of the honing process.

[0041] Furthermore, the two honing parts 339 can be driven by the same ball screw drive as the honing module 332, and both the first and second adjustment drive parts are servo motors.

[0042] Furthermore, the honing part 339 includes an oilstone mounting base connected to the moving frame 338, the oilstone mounting base being used to mount an oilstone on the side facing the workpiece.

[0043] Furthermore, the honing base 33 also includes a buffer 34, and the mounting base 334 is connected to the base body 331 via the buffer 34. Through the buffer 34, the mounting base 334 provides floating support for the honing module 332, effectively reducing the impact of vibrations generated during honing on the honing base 33, making the honing module 332 more stable during operation, and further ensuring the accuracy of the honing process. Specifically, the buffer 34 can be made of rubber shock-absorbing pads, springs, etc.

[0044] like Figure 4 As shown in this embodiment of the invention, the lifting drive component 41 is a telescopic cylinder, and the support base 42 includes a lower base 421, an upper base 422, and a guide rod 423. The lower base 421 is fixedly connected to the cylinder barrel of the telescopic cylinder, and the upper base 422 is fixedly connected to the piston rod of the telescopic cylinder. The guide rod 423 extends downward from the upper base 422 and passes through the lower base 421. The guide rod 423 can improve the stability of the lifting of the upper base 422.

[0045] In this embodiment of the invention, the upper seat 422 is provided with a first support roller seat 424 and a second support roller seat 425 on the side facing the workpiece. The first support roller seat 424 and the second support roller seat 425 are spaced apart along the width direction of the workpiece and are used for rolling contact with the workpiece. The support roller seat includes a seat body and a roller. The seat body is connected to the upper seat 422. The roller rolls against the workpiece. When the workpiece is driven, the roller rotates synchronously under the action of friction, so that the sliding friction on the workpiece is changed into rolling friction, thus avoiding wear on the workpiece. Specifically, the roller may be provided with a rubber outer layer to further reduce wear on the workpiece.

[0046] Furthermore, to accommodate workpieces of different diameters, the upper seat 422 is provided with a threaded adjusting rod 429. The threaded adjusting rod 429 has a first threaded section and a second threaded section with opposite directions of rotation along the width direction of the workpiece. The first threaded section is threadedly connected to the first support roller seat 424, and the second threaded section is threadedly connected to the second support roller seat 425. By rotating the threaded adjusting rod 429, the first support roller seat 424 and the second support roller seat 425 can be driven closer or further apart using their different threaded sections, thereby flexibly adjusting the distance between them to meet the support requirements of workpieces of different diameters. For example, when the workpiece diameter is large, rotating the threaded adjusting rod 429 moves the first and second support roller seats 425 further apart; if the workpiece diameter is small, rotating the threaded adjusting rod 429 moves them closer together.

[0047] Furthermore, the upper seat 422 includes a connecting base block 426, an intermediate pad block 427, and a supporting top block 428 that are detachably connected from bottom to top. The connecting base block 426 connects the piston rod and the guide rod 423, and the supporting top block 428 is provided with a first supporting roller seat 424 and a second supporting roller seat 425. By replacing the intermediate pad block 427 with different sizes, the overall height of the support seat 42 can be adjusted to accommodate workpieces of different diameters.

[0048] like Figure 1 As shown in this embodiment of the invention, the number of support mechanisms 4 is at least two, and the at least two support mechanisms 4 are arranged sequentially at intervals along the length direction of the workpiece. The external cylindrical honing equipment also includes a control device, which is communicatively connected to the lifting drive components 41 of the at least two support mechanisms 4, and is used to control the lifting drive components 41 to drive the support base 42 to descend when the honing device 3 is close to the support mechanism 4, and to control the lifting drive components 41 to drive the support base 42 to rise when the honing device 3 is far away from the support mechanism 4. This ensures effective support for the workpiece, prevents deformation of the workpiece, and enables through-type honing of the workpiece, which is especially suitable for honing the piston rod of an ultra-long hydraulic cylinder.

[0049] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An external cylindrical honing device, characterized in that, The external honing equipment includes: The main body of the equipment includes a grinding machine body (1), a clamping device (2), and a honing device (3). The clamping device (2) and the honing device (3) are both located inside the grinding machine body (1). The clamping device (2) is used to clamp the workpiece at the end, and the honing device (3) is used to perform honing along the length of the workpiece. The support mechanism (4) is located on the processing path of the honing device (3) and includes a lifting drive (41) and a support base (42). The lifting drive (41) is fixedly installed and the lifting end is driven to connect to the support base (42). The lifting drive (41) is used to drive the support base (42) to descend when the honing device (3) passes through the support mechanism (4) so ​​as to remove the support for the workpiece and allow the honing device (3) to pass through.

2. The external cylindrical honing equipment according to claim 1, characterized in that, The honing device (3) includes a translation drive assembly (31), a slide rail (32), and a honing seat (33). The slide rail (32) is fixedly installed inside the grinding machine body (1). The bottom of the honing seat (33) is provided with a slider that is slidably connected to the slide rail (32). The slide rail (32) and the slider are offset to one side of the honing seat (33) so as to be staggered from the support mechanism (4). The translation drive assembly (31) is used to drive the honing seat (33) to move along the slide rail (32).

3. The external cylindrical honing equipment according to claim 2, characterized in that, The translation drive assembly (31) is arranged on the same side as the slide rail (32) and includes a travel motor (311), a travel gear (312) and a fixed rack (313). The fixed rack (313) is arranged parallel to the slide rail (32) on the grinding machine body (1). The travel motor (311) is arranged on the honing seat (33). The output shaft of the travel motor (311) is arranged downward to drive the travel gear (312). The travel gear (312) is meshed with the fixed rack (313).

4. The external cylindrical honing equipment according to claim 2, characterized in that, The honing stand (33) includes a stand body (331) and a honing module (332) for honing the workpiece. The stand body (331) is provided with the slider and is used to move along the slide rail (32) under the drive of the translation drive assembly (31). The stand body (331) is provided with a honing space (35) through which the workpiece passes. There are two honing modules (332). The two honing modules (332) are arranged relatively at intervals in the honing space (35) and can move towards each other or away from each other.

5. The external cylindrical honing equipment according to claim 4, characterized in that, The honing base (33) further includes a first adjustment drive assembly (333), which includes a mounting base plate (334), a bidirectional ball screw (335), and a first adjustment drive component (336). The mounting base plate (334) is located at the bottom of the honing space (35). Two honing modules (332) are movably mounted on the mounting base plate (334). The bidirectional ball screw (335) is mounted on the base body (331). Two nuts (337) on the bidirectional ball screw (335) are respectively connected to the two honing modules (332). The first adjustment drive component (336) drives the bidirectional ball screw (335).

6. The external cylindrical honing equipment according to claim 5, characterized in that, The honing module (332) includes a second adjustment drive, a movable frame (338) and two honing parts (339). The movable frame (338) is movably disposed along the mounting base plate (334). The two honing parts (339) are disposed on the movable frame (338) at a distance from each other. The second adjustment drive is disposed on the movable frame (338) and is used to drive the two honing parts (339) to move closer to each other or further away from each other. And / or, the honing base (33) further includes a buffer (34), and the mounting base (334) is connected to the base body (331) through the buffer (34).

7. The external cylindrical honing equipment according to any one of claims 1 to 6, characterized in that, The lifting drive component (41) is a telescopic cylinder. The support base (42) includes a lower base (421), an upper base (422), and a guide rod (423). The lower base (421) is fixedly connected to the cylinder of the telescopic cylinder, the upper base (422) is fixedly connected to the piston rod of the telescopic cylinder, and the guide rod (423) extends downward from the upper base (422) and passes through the lower base (421).

8. The external cylindrical honing equipment according to claim 7, characterized in that, The upper seat (422) is provided with a first support roller seat (424) and a second support roller seat (425) on the side facing the workpiece. The first support roller seat (424) and the second support roller seat (425) are spaced apart along the width direction of the workpiece and are used to roll and abut against the workpiece.

9. The external cylindrical honing equipment according to claim 8, characterized in that, The upper seat (422) is provided with a threaded adjusting rod (429). The threaded adjusting rod (429) has a first threaded section and a second threaded section with opposite directions of rotation along the width direction of the workpiece. The first threaded section is threadedly connected to the first support roller seat (424), and the second threaded section is threadedly connected to the second support roller seat (425). And / or, the upper body (422) includes a connecting bottom block (426), an intermediate pad block (427) and a supporting top block (428) that are detachably connected from bottom to top. The connecting bottom block (426) connects the piston rod and the guide rod (423). The supporting top block (428) is provided with the first supporting roller seat (424) and the second supporting roller seat (425).

10. The external cylindrical honing equipment according to any one of claims 1 to 6, characterized in that, The number of the support mechanisms (4) is at least two, and the at least two support mechanisms (4) are arranged sequentially at intervals along the length direction of the workpiece. The external honing equipment also includes a control device, which is communicatively connected to the lifting drive (41) of the at least two support mechanisms (4) respectively, and is used to control the lifting drive (41) to drive the support seat (42) to descend when the honing device (3) is close to the support mechanism (4), and to control the lifting drive (41) to drive the support seat (42) to rise when the honing device (3) is far away from the support mechanism (4).

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