A spindle feed-based rotary drive type centerless honing device

Abstract

The application discloses a kind of rotary drive type centerless honing device based on main shaft feed, it includes bottom plate, floating honing frame, lower swing seat, two-dimensional moving platform is installed between bottom plate and lower swing seat, two-dimensional moving platform includes X-axis guide rail, X-axis sliding block, Y-axis guide rail, Y-axis sliding block, the Y-axis sliding block on each Y-axis guide rail is respectively installed first bearing seat, each first bearing seat is connected with lower swing seat by support shaft respectively;Lower swing seat is screwed two second bearing seats, each second bearing seat is connected with floating honing frame by connecting shaft respectively;Floating honing frame is provided with workpiece mounting hole, and the sidewall of workpiece mounting hole is provided with several honing plate installation grooves, and one of honing plate installation grooves is radially slidably installed movable honing plate;Floating honing frame is equipped with fine adjustment feed mechanism corresponding movable honing plate on side.By the above structure design, the application has the advantages of novel structure design, sufficient degree of freedom, honing plate feed control precision, and can be effectively applied to general milling machine.

Description

Technical Field

[0001] This invention relates to the field of honing equipment technology, and more particularly to a rotary-driven centerless honing device based on spindle feed. Background Technology

[0002] In the field of precision machinery manufacturing, the surface quality of the outer diameter of shaft parts (such as hydraulic piston rods, precision guide columns, motor output shafts, etc.) directly determines the assembly accuracy and service life. For the finishing of the outer diameter of such parts, honing is an important precision machining method. Honing can effectively remove tool marks left by the previous process, improve roundness error and form a cross-textured surface that is conducive to lubrication.

[0003] Currently, the main technical approaches used for honing the outer diameter of shaft parts are as follows: 1. Dedicated Centerless Honing Machine Solution: Traditional high-precision external cylindrical honing relies on dedicated centerless honing machines. These machines drive the rotation of shaft-like parts via guide wheels, while the honing head applies pressure to cut the outer diameter of the shaft-like parts. However, the dedicated centerless honing machine solution has the following limitations: dedicated equipment is expensive, and complex guide wheels and support plates need to be replaced for shaft-like parts of different diameters and lengths, making adjustments difficult and unsuitable for flexible production needs of multiple varieties and small batches; for many small and medium-sized enterprises, purchasing dedicated machine tools is not economically viable. 2. External honing using general-purpose machine tools: In order to reduce equipment costs, the industry has tried to install honing devices on general-purpose lathes or milling machines; For the lathe solution, the shaft-like parts are held in place by the lathe spindle and rotated, and the honing head is mounted on the lathe tool post. However, although this solution of using a general-purpose lathe for external cylindrical honing achieves the rotation of the shaft-like parts, it is limited by the lathe structure, the feed control of the honing head is relatively rough, and for slender shaft-like parts, there is a lack of effective auxiliary support, which can easily cause vibration and tool deflection. For milling machine solutions, external cylindrical machining is performed using a milling machine. Typically, the honing tool is mounted on the milling machine spindle and rotated, while the shaft-like parts are fixed on the worktable. However, in this solution of using a general-purpose milling machine for external cylindrical honing, the shaft-like parts lack active rotation. The honing bar only relies on relative motion for grinding, resulting in low cutting efficiency. Furthermore, it is impossible to even out errors through the rotation of the shaft-like parts, making it difficult to guarantee the roundness of the machined parts. More importantly, the shaft-like parts are rigidly clamped and cannot automatically adjust their posture to adapt to the honing force during machining, which can easily cause local overcutting or shape errors.

[0004] It should be noted that most of the machine tool clamping external honing tools currently on the market can only provide rotation or oscillation in a single direction. For external honing that requires precise centering, shaft parts often need to have multiple rotational degrees of freedom to achieve automatic centering. However, existing machine tool clamping external honing tools cannot simultaneously achieve free oscillation of X-axis and Y-axis rotation, which makes it impossible for shaft parts to automatically find their position during machining, affecting the correction effect of roundness and cylindricity.

[0005] In addition, existing external honing tools mostly use screw or eccentric wheel mechanisms to control the feed of the honing discs. This is inconvenient to operate and has low feed control accuracy, making it difficult to achieve micron-level cutting depth adjustment and failing to meet the requirements of high-precision external honing for cutting force control.

[0006] In view of the above situation, it is necessary to design and develop an external cylindrical (centerless) honing device that can utilize the spindle motion of a general milling machine, give shaft parts multiple rotational degrees of freedom to achieve automatic centering, and has the ability to finely adjust the feed. Summary of the Invention

[0007] The purpose of this invention is to provide a spindle-feed-based rotary centerless honing device to address the shortcomings of existing technologies. This spindle-feed-based rotary centerless honing device has a novel structural design, sufficient degrees of freedom, precise control of honing disc feed, and can be effectively applied to general-purpose milling machines.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0009] A rotary-driven centerless honing device based on spindle feed includes a base plate, a floating honing frame mounted on the upper side of the base plate, and a lower swing seat mounted between the base plate and the floating honing frame. The base plate and the lower swing seat are arranged vertically at intervals, and a two-dimensional moving platform is installed between the base plate and the lower swing seat. The two-dimensional moving platform includes two X-axis guide rails arranged at intervals and extending along the X-axis direction, two Y-axis guide rails arranged at intervals and extending along the Y-axis direction, and two first bearing seats arranged aligned and spaced along the X-axis direction. Each X-axis guide rail is screwed onto the upper surface of the base plate, and each X-axis guide rail is slidably mounted with two X-axis sliders. The two ends of each Y-axis guide rail are connected to the corresponding X-axis guide rail through the X-axis sliders. Each Y-axis guide rail is slidably mounted with a Y-axis slider, and each first bearing seat is connected to the corresponding Y-axis guide rail through the Y-axis sliders. Each first bearing housing is equipped with a support shaft extending along the X-axis direction. The lower swing seat is located between the two first bearing housings, and each support shaft is connected to the corresponding end of the lower swing seat through the first bearing. The lower swing seat is screwed with two second bearing seats that are aligned and spaced apart along the Y-axis. The floating honing frame is located between the two second bearing seats. Each second bearing seat is rotatably mounted with a connecting shaft extending along the Y-axis through the second bearing. Each connecting shaft is fastened to the end of the corresponding side of the floating honing frame. The floating honing frame has a vertically penetrating workpiece mounting hole in the middle. The side wall of the workpiece mounting hole has several honing disc mounting slots arranged in a circular interval and extending vertically. A movable honing disc is radially slidably installed in one of the honing disc mounting slots, and a fixed honing disc is embedded in the other honing disc mounting slots. A fine-tuning feed mechanism is installed on the side of the floating honing frame corresponding to the movable honing disc. The fine-tuning feed mechanism includes a horizontal mounting block screwed onto the floating honing frame and arranged horizontally. The interior of the horizontal mounting block has a horizontal mounting hole that is radially aligned with the movable honing disc. A movable push rod is slidably embedded in the horizontal mounting hole. The floating honing frame has a honing frame through hole that opens towards the movable push rod and communicates with the honing disc mounting groove corresponding to the movable honing disc. The inner end of the movable push rod passes through the honing frame through hole and extends into the honing disc mounting groove corresponding to the movable honing disc. The fine-tuning feed mechanism also includes a dial indicator, and the measuring rod of the dial indicator is drivenly connected to the movable push rod.

[0010] The fine-tuning feed mechanism also includes a vertically arranged vertical mounting block. The vertical mounting block has a vertically penetrating vertical mounting hole inside. The dial indicator is fixedly installed at the upper opening of the vertical mounting hole by a locking screw, and the measuring rod of the dial indicator extends into the vertical mounting hole. The lower end of the vertical mounting block has a transverse through hole, and the lower end of the vertical mounting block is fitted onto the outer periphery of the outer end of the horizontal mounting block through the transverse through hole. The outer end of the horizontal mounting block has a vertical through hole that is aligned and connected with the vertical mounting hole of the vertical mounting block. A wedge-shaped vertical rod is slidably fitted into the vertical mounting hole of the vertical mounting block. The lower end of the wedge-shaped vertical rod extends into the horizontal mounting hole through the vertical through hole of the horizontal mounting block. The wedge-shaped vertical rod is provided with a pushing slope, and the outer end of the movable push rod contacts the pushing slope of the wedge-shaped vertical rod.

[0011] The transverse mounting block has two vertically spaced transverse mounting holes inside, and each transverse mounting hole is fitted with a movable push rod. The outer end of each movable push rod is in contact with the pushing inclined surface of the wedge-shaped vertical rod.

[0012] The floating honing frame is provided with a honing frame connecting hole with a horizontal outward opening for each of the connecting shafts, and an internal thread hole is provided at the bottom of each honing frame connecting hole. Each connecting shaft has an axially penetrating screw mounting hole in its core portion. Each screw mounting hole is a stepped hole. The inner end of each connecting shaft is inserted into the honing frame connecting hole on the corresponding side. Each connecting shaft has a locking screw that is screwed into the internal thread hole on the corresponding side in its screw mounting hole.

[0013] The honing disc mounting slots are vertically inserted through the floating honing frame. The upper surface of the floating honing frame is screwed with an annular upper stop block, and the lower surface of the floating honing frame is screwed with an annular lower stop block. The movable honing disc and each of the fixed honing discs are vertically limited between the upper and lower stop blocks.

[0014] The lower swing seat is provided with a connecting block for each of the support shafts, and the inner end of each support shaft is rotatably connected to the connecting block on the corresponding side through a first bearing.

[0015] Each of the support shafts is secured to the corresponding first bearing seat by locking screws.

[0016] The base plate has a workbench locking hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects, specifically: 1. By setting up a two-dimensional moving platform, the floating honing frame has translational freedom along the X and Y axes; by setting up X-axis rotational support mechanisms and Y-axis rotational support mechanisms, the floating honing frame has swing freedom around the X and Y axes. The floating honing frame can automatically adjust its posture during the honing process to achieve automatic centering, effectively improving the roundness and cylindricity of the workpiece. 2. The micrometer-driven movable push rod moves inward, enabling micron-level adjustment of the cutting depth, providing high control precision and intuitive and convenient operation; 3. Therefore, the rotary drive centerless honing device based on spindle feed of the present invention has the advantages of novel structural design, sufficient degree of freedom, and precise control of honing disc feed, and can be effectively applied to general milling machines. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0021] Figure 3 This is a partial structural diagram of the present invention.

[0022] Figure 4 This is a cross-sectional schematic diagram of the present invention.

[0023] Figure 5 This is a partial cross-sectional schematic diagram of the present invention.

[0024] exist Figures 1 to 5 This includes: 1-Base plate; 11-Worktable locking hole; 2-Floating honing frame; 21-Workpiece mounting hole; 22-Honing disc mounting slot; 23-Honing frame through hole; 24-Honing frame connecting hole; 25-Internal thread hole; 3-Lower swing seat; 31-Connecting block; 4-Two-dimensional moving platform; 411-X-axis guide rail; 412-X-axis slider; 421-Y-axis guide rail; 422-Y-axis slider; 51-First bearing seat; 52-Support shaft; 53-First bearing; 61-Second bearing seat; 62-Connecting shaft; 621-Bolt mounting hole; 63-Second bearing; 71-Modible honing disc; 72-Fixed honing disc; 73-Upper stop block; 74-Lower stop block; 8-Fine-tuning feed mechanism; 81-Horizontal mounting block; 811-Horizontal mounting hole; 812-Vertical through hole; 82-Modible push rod; 83-Dial indicator; 831-Measuring rod; 84-Vertical mounting block; 841-Vertical mounting hole; 842-Horizontal through hole; 85-Wedge-shaped vertical rod; 851-Pushing inclined surface; 9-Shaft-type workpiece. Detailed Implementation

[0025] The present invention will now be described in conjunction with specific embodiments.

[0026] Example 1, as Figures 1 to 5 As shown, a rotary-driven centerless honing device based on spindle feed includes a base plate 1, a floating honing frame 2 is mounted on the upper side of the base plate 1, and a lower swing seat 3 is mounted between the base plate 1 and the floating honing frame 2.

[0027] It needs to be explained that, such as Figures 1 to 3 As shown, the base plate 1 has a worktable locking hole 11; during the use of the rotary drive centerless honing device based on spindle feed in this embodiment, the worktable locking hole 11 is fitted with screws, and the base plate 1 is fixed to the worktable of the milling machine by screws.

[0028] Furthermore, such as Figures 1 to 4As shown, the base plate 1 and the lower swing seat 3 are arranged vertically at intervals, and a two-dimensional moving platform 4 is installed between the base plate 1 and the lower swing seat 3. The two-dimensional moving platform 4 includes two X-axis guide rails 411 arranged at intervals and extending along the X-axis direction, two Y-axis guide rails 421 arranged at intervals and extending along the Y-axis direction, and two first bearing seats 51 arranged aligned at intervals along the X-axis direction. Each X-axis guide rail 411 is screwed onto the upper surface of the base plate 1, and each X-axis guide rail 411 is slidably mounted with two X-axis sliders 412. The two ends of each Y-axis guide rail 421 are connected to the corresponding side X-axis guide rail 411 through the X-axis sliders 412. Each Y-axis guide rail 421 is slidably mounted with a Y-axis slider 422, and each first bearing seat 51 is connected to the corresponding side Y-axis guide rail 421 through the Y-axis sliders 422.

[0029] Furthermore, such as Figure 1 , Figure 2 , Figure 3 as well as Figure 5 As shown, each of the first bearing seats 51 is equipped with a support shaft 52 extending along the X-axis direction. The lower swing seat 3 is located between the two first bearing seats 51, and each support shaft 52 is connected to the end of the corresponding side of the lower swing seat 3 through a first bearing 53.

[0030] And also, such as Figures 1 to 5 As shown, the lower swing seat 3 is screwed with two second bearing seats 61 that are aligned and spaced apart along the Y-axis. The floating honing frame 2 is located between the two second bearing seats 61. Each second bearing seat 61 is rotatably mounted with a connecting shaft 62 extending along the Y-axis through a second bearing 63. Each connecting shaft 62 is fastened to the end of the corresponding side of the floating honing frame 2.

[0031] In addition, such as Figures 3 to 5 As shown, a vertically penetrating workpiece mounting hole 21 is provided in the middle of the floating honing frame 2. Several honing disc mounting slots 22 are provided on the side wall of the workpiece mounting hole 21, which are arranged in a circular interval and extend vertically respectively. A movable honing disc 71 is radially slidably installed in one of the honing disc mounting slots 22, and a fixed honing disc 72 is embedded in the other honing disc mounting slots 22 respectively.

[0032] It should be noted that, as Figures 1 to 5As shown, a fine-tuning feed mechanism 8 is installed on the side of the floating honing frame 2 corresponding to the movable honing plate 71. The fine-tuning feed mechanism 8 includes a horizontal mounting block 81 screwed onto the floating honing frame 2 and arranged horizontally. The interior of the horizontal mounting block 81 has a horizontal mounting hole 811 that is radially aligned with the movable honing plate 71. A movable push rod 82 is slidably embedded in the horizontal mounting hole 811. The floating honing frame 2 has a honing frame through hole 23 that opens toward the movable push rod 82 and communicates with the honing plate mounting groove 22 corresponding to the movable honing plate 71. The inner end of the movable push rod 82 passes through the honing frame through hole 23 and extends into the honing plate mounting groove 22 corresponding to the movable honing plate 71. The fine-tuning feed mechanism 8 also includes a dial indicator 83. The measuring rod 831 of the dial indicator 83 is drivenly connected to the movable push rod 82.

[0033] For the two-dimensional moving platform 4 of this embodiment, which consists of X-axis guide rail 411, X-axis slider 412, Y-axis guide rail 421 and Y-axis slider 422, the X-axis guide rail 411 and X-axis slider 412 are used to guide the lower swing seat 3 and floating honing frame 2 to move in the X-axis direction, and the Y-axis guide rail 421 and Y-axis slider 422 are used to guide the lower swing seat 3 and floating honing frame 2 to move in the Y-axis direction. Therefore, the two-dimensional moving platform 4 of this embodiment can realize the forward, backward and left and right movement of the floating honing frame 2 in the horizontal plane, thereby providing translational degrees of freedom for the shaft workpiece 9, so that the shaft workpiece 9 can automatically find its horizontal position during the honing process.

[0034] In this embodiment, the first bearing seat 51, the support shaft 52, and the first bearing 53 together form an X-axis rotation support mechanism, which rotates and supports the lower swing seat 3. When the lower swing seat 3 achieves X-axis rotation through the X-axis rotation support mechanism, the floating honing frame 2 performs X-axis rotation synchronously with the lower swing seat 3, thereby enabling the floating honing frame 2 to freely swing in the X-axis direction according to the position of the shaft workpiece 9.

[0035] In this embodiment, the second bearing seat 61, the connecting shaft 62, and the second bearing 63 together form a Y-axis rotation support mechanism. This Y-axis rotation support mechanism rotates to support the floating honing frame 2, so that the floating honing frame 2 can rotate relative to the lower swing seat 3 in the Y-axis direction, thereby enabling the floating honing frame 2 to freely swing in the Y-axis direction according to the position of the shaft workpiece 9.

[0036] For the floating honing frame 2 in this embodiment, the workpiece mounting hole 21 in the middle position accommodates the shaft workpiece 9 to be honed. The floating honing frame 2 in this embodiment is a replaceable structure, and the floating honing frame 2 can be replaced with one that is adapted to the diameter of the shaft workpiece 9 according to different shaft workpieces 9.

[0037] For the fine-tuning feed mechanism 8 in this embodiment, the movable push rod 82, which is slidably installed in the transverse mounting hole 811 of the transverse mounting block 81, is used to push the movable honing plate 71 inward. The movable push rod 82 can be moved inward by operating the dial indicator 83, thereby causing the movable push rod 82 to push the movable honing plate 71 to move radially inward, so as to realize the adjustment of the depth of cut feed in honing.

[0038] When performing external honing on a shaft workpiece 9 using the spindle-feed-based rotary-driven centerless honing device of this embodiment, the following steps are included: Step a: Clamp the upper end of the shaft workpiece 9 to be processed on the milling machine spindle, and leave the lower end of the shaft workpiece 9 suspended in the air; Step b: Operate the milling machine and make the milling machine spindle drive the shaft workpiece 9 to move, so that the shaft workpiece 9 is inserted into the workpiece mounting hole 21 of the floating honing frame 2; Step c: Start the milling machine. The shaft workpiece 9 rotates around the Z-axis and feeds up and down along the Z-axis with the milling machine spindle. During this process, the floating honing frame 2 obtains free translation in two orthogonal directions and free swing in two orthogonal directions through the two-dimensional moving platform 4, the Y-axis rotation support mechanism and the X-axis rotation support mechanism, thereby realizing that the floating honing frame 2 automatically centers itself with the shaft workpiece 9 in accordance with the honing force. Step d: Operate the dial indicator 83, causing the measuring rod 831 of the dial indicator 83 to drive the movable push rod 82 to move inward. The inwardly moving movable push rod 82 pushes the movable honing disc 71 to move radially inward. The movable honing disc 71 presses against the outer cylindrical surface of the shaft workpiece 9 to achieve precise cutting depth control. When the milling machine spindle drives the shaft workpiece 9 to achieve outer cylindrical honing feed, the movable honing disc 71 and the fixed honing disc 72 of the floating honing frame 2 perform centerless honing on the outer cylindrical surface of the shaft workpiece 9 to correct the roundness, cylindricity, and surface roughness of the shaft workpiece 9. Step e: After the outer diameter honing of the shaft workpiece 9 is completed, operate the milling machine and make the milling machine spindle drive the machined shaft workpiece 9 to move away from the workpiece mounting hole 21 of the floating honing frame 2.

[0039] It should be emphasized that the rotary-driven centerless honing device based on spindle feed in this embodiment has the following beneficial effects, specifically: 1. Multi-degree-of-freedom automatic centering: By setting up the two-dimensional moving platform 4, the floating honing frame 2 has translational degrees of freedom along the X and Y axes; by setting up the X-axis rotation support mechanism and the Y-axis rotation support mechanism, the floating honing frame 2 has swinging degrees of freedom around the X and Y axes. The floating honing frame 2 can automatically adjust its posture during the honing process to achieve automatic centering, effectively improving the roundness and cylindricity of the workpiece. 2. Precision fine-tuning feed: The dial indicator 83 drives the movable push rod 82 to move inward, which can realize micron-level cutting depth adjustment, with high control accuracy and intuitive and convenient operation.

[0040] In summary, the rotary-driven centerless honing device based on spindle feed in this embodiment has the advantages of novel structural design, sufficient degree of freedom, and precise control of honing disc feed, and can be effectively applied to general milling machines. Example 2, as Figures 1 to 5 As shown, the difference between this embodiment 2 and embodiment 1 is that the fine-tuning feed mechanism 8 also includes a vertically arranged vertical mounting block 84. The vertical mounting block 84 has a vertically penetrating vertical mounting hole 841 inside. The dial indicator 83 is fixedly installed at the upper opening of the vertical mounting hole 841 by locking screws, and the measuring rod 831 of the dial indicator 83 extends into the vertical mounting hole 841.

[0041] The lower end of the vertical mounting block 84 is provided with a transverse through hole 842. The lower end of the vertical mounting block 84 is fitted onto the outer periphery of the outer end of the transverse mounting block 81 through the transverse through hole 842. The outer end of the transverse mounting block 81 is provided with a vertical through hole 812 that is vertically through and aligned with and connected to the vertical mounting hole 841 of the vertical mounting block 84.

[0042] In addition, a wedge-shaped vertical rod 85 is slidably fitted into the vertical mounting hole 841 of the vertical mounting block 84. The lower end of the wedge-shaped vertical rod 85 extends into the horizontal mounting hole 811 through the vertical through hole 812 of the horizontal mounting block 81. The wedge-shaped vertical rod 85 is provided with a pushing inclined surface 851, and the outer end of the movable push rod 82 contacts the pushing inclined surface 851 of the wedge-shaped vertical rod 85.

[0043] It should be noted that when the wedge-shaped vertical rod 85 extends into the horizontal mounting hole 811 through the vertical through hole 812 of the horizontal mounting block 81, as... Figure 5 As shown, the wedge-shaped vertical rod 85 can achieve the anti-detachment limit of the vertical mounting block 84.

[0044] For the fine-tuning feed mechanism 8 in this embodiment 2, when the dial indicator 83 is operated, the measuring rod 831 of the dial indicator 83 drives the wedge-shaped vertical rod 85 to move vertically downward, thereby pushing the movable push rod 82 to move inward. The movable push rod 82 moving inward pushes the movable honing plate 71 to move radially inward.

[0045] The fine-tuning feed mechanism 8 in this embodiment 2 can convert the vertical displacement of the dial indicator 83 into the radial feed of the movable honing disc 71. This structural design has the advantage of being easy to operate and use. Example 3, as Figure 5As shown, the difference between this embodiment 3 and embodiment 2 is that: the interior of the horizontal mounting block 81 has two vertically spaced horizontal mounting holes 811, each horizontal mounting hole 811 is fitted with a movable push rod 82, and the outer end of each movable push rod 82 is in contact with the pushing inclined surface 851 of the wedge-shaped vertical rod 85.

[0046] When the spindle-feed-based rotary drive centerless honing device of this embodiment is used, the fine-tuning feed mechanism 8 acts on the movable honing disc 71 through two vertically spaced movable push rods 82. This structural design enables the movable honing disc 71 to be subjected to more balanced force, thereby improving the stability of the movable honing disc 71 when it contacts the outer circle of the shaft workpiece 9. Example 4, as Figure 4 As shown, the difference between this embodiment four and embodiment one is that: the floating honing frame 2 is provided with honing frame connecting holes 24 that open laterally outward for each connecting shaft 62, and the bottom of each honing frame connecting hole 24 is provided with an internal thread hole 25.

[0047] Each connecting shaft 62 has an axially penetrating screw mounting hole in its core portion. Each screw mounting hole is a stepped hole. The inner end of each connecting shaft 62 is inserted into the honing frame connecting hole 24 on the corresponding side. Each connecting shaft 62 has a locking screw installed in its screw mounting hole that is screwed into the internal thread hole 25 on the corresponding side.

[0048] During the replacement of the floating honing frame 2, first loosen the locking screws and allow them to disengage from the internal threaded hole 25 of the floating honing frame 2. Then, pull the connecting shaft 62 out of the honing frame connecting hole 24 of the floating honing frame 2. After the connecting shaft 62 exits the honing frame connecting hole 24 of the floating honing frame 2, the floating honing frame 2 can be disassembled. It should be noted that in this embodiment, the connecting shaft 62 and the inner ring of the second bearing 63 have a clearance fit.

[0049] For the spindle-feed-based rotary-driven centerless honing device in this embodiment four, the connection method between the connecting shaft 62 and the floating honing frame 2 has the advantage of easy assembly and disassembly. Example 5, as Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, the difference between this fifth embodiment and the first embodiment is that: each honing plate mounting groove 22 vertically penetrates the floating honing frame 2, the upper surface of the floating honing frame 2 is screwed with an annular upper stop block 73, the lower surface of the floating honing frame 2 is screwed with an annular lower stop block 74, and the movable honing plate 71 and each fixed honing plate 72 are vertically limited between the upper stop block 73 and the lower stop block 74. Example 6, as Figures 1 to 5As shown, the difference between this embodiment six and embodiment one is that: the lower swing seat 3 is provided with a connecting block 31 for each support shaft 52, and the inner end of each support shaft 52 is rotatably connected to the corresponding side connecting block 31 through the first bearing 53.

[0050] It should be noted that each support shaft 52 is secured to the corresponding first bearing seat 51 by locking screws.

[0051] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A rotary-driven centerless honing device based on spindle feed, comprising a base plate (1), characterized in that: A floating honing frame (2) is installed on the upper side of the base plate (1), and a lower swing seat (3) is installed between the base plate (1) and the floating honing frame (2). The base plate (1) and the lower swing seat (3) are arranged vertically at intervals, and a two-dimensional moving platform (4) is installed between the base plate (1) and the lower swing seat (3); the two-dimensional moving platform (4) includes two X-axis guide rails (411) arranged at intervals and extending along the X-axis direction, two Y-axis guide rails (421) arranged at intervals and extending along the Y-axis direction, and two first bearing seats (51) arranged at intervals aligned along the X-axis direction. Each X-axis guide rail (411) is screwed onto the upper surface of the base plate (1), and each X-axis guide rail (411) is slidably mounted with two X-axis sliders (412). The two ends of each Y-axis guide rail (421) are connected to the corresponding side X-axis guide rail (411) through the X-axis sliders (412); each Y-axis guide rail (421) is slidably mounted with a Y-axis slider (422), and each first bearing seat (51) is connected to the corresponding side Y-axis guide rail (421) through the Y-axis sliders (422); Each first bearing seat (51) is equipped with a support shaft (52) extending along the X-axis direction. The lower swing seat (3) is located between the two first bearing seats (51), and each support shaft (52) is connected to the corresponding end of the lower swing seat (3) through the first bearing (53). The lower swing seat (3) is screwed with two second bearing seats (61) arranged at intervals along the Y-axis. The floating honing frame (2) is located between the two second bearing seats (61). Each second bearing seat (61) is rotatably mounted with a connecting shaft (62) extending along the Y-axis through a second bearing (63). Each connecting shaft (62) is fastened to the end of the corresponding side of the floating honing frame (2). The floating honing frame (2) has a vertically penetrating workpiece mounting hole (21) in the middle position. The side wall of the workpiece mounting hole (21) has several honing disc mounting slots (22) arranged in a circular interval and extending vertically. A movable honing disc (71) is radially slidably installed in one of the honing disc mounting slots (22), and a fixed honing disc (72) is embedded in the other honing disc mounting slots (22). A fine-tuning feed mechanism (8) is installed on the side of the floating honing frame (2) corresponding to the movable honing disc (71). The fine-tuning feed mechanism (8) includes a horizontal mounting block (81) screwed onto the floating honing frame (2) and arranged horizontally. The interior of the horizontal mounting block (81) is provided with a horizontal mounting hole (811) that is radially aligned with the movable honing disc (71). A movable push rod (82) is slidably embedded in the horizontal mounting hole (811). The floating honing frame (2) is provided with The honing frame through hole (23) is open to the side of the movable push rod (82) and communicates with the honing plate mounting groove (22) corresponding to the movable honing plate (71). The inner end of the movable push rod (82) passes through the honing frame through hole (23) and extends into the honing plate mounting groove (22) corresponding to the movable honing plate (71). The fine-tuning feed mechanism (8) also includes a dial indicator (83), and the measuring rod (831) of the dial indicator (83) is driven to connect with the movable push rod (82).

2. The rotary-driven centerless honing device based on spindle feed according to claim 1, characterized in that: The fine-tuning feed mechanism (8) also includes a vertically arranged vertical mounting block (84), the interior of which is provided with a vertically penetrating vertical mounting hole (841), the dial indicator (83) is fixedly installed at the upper opening of the vertical mounting hole (841) by a locking screw, and the measuring rod (831) of the dial indicator (83) extends into the vertical mounting hole (841); The lower end of the vertical mounting block (84) is provided with a transverse through hole (842). The lower end of the vertical mounting block (84) is fitted onto the outer periphery of the outer end of the transverse mounting block (81) through the transverse through hole (842). The outer end of the transverse mounting block (81) is provided with a vertical through hole (812) that is vertically through and aligned with the vertical mounting hole (841) of the vertical mounting block (84). A wedge-shaped vertical rod (85) is slidably fitted into the vertical mounting hole (841) of the vertical mounting block (84). The lower end of the wedge-shaped vertical rod (85) extends into the horizontal mounting hole (811) through the vertical through hole (812) of the horizontal mounting block (81). The wedge-shaped vertical rod (85) is provided with a pushing slope (851). The outer end of the movable push rod (82) contacts the pushing slope (851) of the wedge-shaped vertical rod (85).

3. The rotary-driven centerless honing device based on spindle feed according to claim 2, characterized in that: The interior of the horizontal mounting block (81) has two vertically spaced horizontal mounting holes (811), each horizontal mounting hole (811) is fitted with a movable push rod (82), and the outer end of each movable push rod (82) is in contact with the pushing inclined surface (851) of the wedge-shaped vertical rod (85).

4. The rotary-driven centerless honing device based on spindle feed according to claim 1, characterized in that: The floating honing frame (2) is provided with honing frame connecting holes (24) that open laterally outward for each of the connecting shafts (62), and each honing frame connecting hole (24) is provided with an internal thread hole (25) at the bottom. Each connecting shaft (62) has an axially penetrating screw mounting hole in its core. Each screw mounting hole is a stepped hole. The inner end of each connecting shaft (62) is inserted into the honing frame connecting hole (24) on the corresponding side. Each connecting shaft (62) has a locking screw that is screwed into the internal thread hole (25) on the corresponding side in its screw mounting hole.

5. The rotary-driven centerless honing device based on spindle feed according to claim 1, characterized in that: Each of the honing plate mounting slots (22) vertically penetrates the floating honing frame (2). The upper surface of the floating honing frame (2) is screwed with an upper stop block (73) in the shape of a ring, and the lower surface of the floating honing frame (2) is screwed with a lower stop block (74) in the shape of a ring. The movable honing plate (71) and each of the fixed honing plates (72) are vertically limited between the upper stop block (73) and the lower stop block (74).

6. The rotary-driven centerless honing device based on spindle feed according to claim 1, characterized in that: The lower swing seat (3) is provided with a connecting block (31) corresponding to each of the support shafts (52), and the inner end of each support shaft (52) is rotatably connected to the corresponding side connecting block (31) through the first bearing (53).

7. A rotary-driven centerless honing device based on spindle feed according to claim 6, characterized in that: Each of the support shafts (52) is secured to the corresponding first bearing seat (51) by locking screws.

8. A rotary-driven centerless honing device based on spindle feed according to any one of claims 1-7, characterized in that: The base plate (1) has a workbench locking hole (11).

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