Small-diameter metal thin-walled pipe hole honing equipment

Abstract

The present application provides a kind of small diameter metal thin-walled pipe hole honing equipment, including processing platform, honing device and oil supply mechanism, the honing tool bar is fixedly provided with dynamic detection mechanism for real-time detection of pipe inner hole size during honing process, the present application relates to honing equipment technical field, the present application is adjusted according to the diameter of honing head in honing tool bar Change, synchronous belt drive adjustment unit and detection unit complete radial adaptation adjustment, ensure that the working size of detection unit always keeps consistent with the processing size of honing head, realize instant online detection after the honing processing of pipe with different diameters is completed, completely abandon the operation mode of traditional equipment after processing is completed, dismount pipe and carry out offline detection, improve pipe inner hole size detection precision.

Description

Technical Field

[0001] This invention relates to the field of honing equipment technology, and in particular to a honing equipment for the inner bore of small-diameter thin-walled metal tubes. Background Technology

[0002] Existing honing equipment for small-diameter thin-walled metal tubes mainly relies on the honing tool end to complete the inner wall cutting of the tube. The entire equipment only has a single honing function and cannot simultaneously collect the diameter of the inner hole of the tube in real time during the honing operation. It cannot provide timely feedback on changes in the diameter during the processing. The diameter can only be measured offline using a special measuring tool after the entire tube is processed. The processing and inspection processes are separated, which not only significantly reduces the processing efficiency of the tube, but also makes it easy for the offline inspection to produce dimensional measurement errors due to the positioning deviation of the tube during secondary clamping. It is difficult to meet the production requirements of high-precision processing of thin-walled tubes. Summary of the Invention

[0003] The purpose of this invention is to provide a honing device for the inner hole of small-diameter thin-walled metal tubes. This device can solve the problems of the entire set of equipment only having a single honing processing function, which cannot simultaneously collect the inner hole diameter of the tube in real time during the honing operation, and cannot provide timely feedback on the diameter change during the processing. The diameter can only be measured offline using special measuring tools after the entire tube is processed. The processing and inspection processes are separated, which not only greatly reduces the processing efficiency of the tube, but also makes it easy for the offline inspection to produce size detection errors due to the secondary clamping and positioning deviation of the tube, making it difficult to meet the production requirements of high-precision processing of thin-walled tubes.

[0004] This invention provides a honing device for the inner bore of small-diameter thin-walled metal tubes, comprising a processing platform, a honing device, and an oil supply mechanism. The honing device includes a workpiece rotation clamping mechanism, a traveling mechanism, a tool holder rotation clamping mechanism, and a honing tool holder. The traveling mechanism is fixedly mounted on the processing platform. The tool holder rotation clamping mechanism is connected to the traveling mechanism and can clamp the honing tool holder and drive it to rotate. The workpiece rotation clamping mechanism is fixedly mounted on the processing platform, and the oil supply mechanism is fixedly mounted on the processing platform. The invention is characterized in that a dynamic detection mechanism for real-time detection of the inner bore size of the tube during the honing process is fixedly mounted on the honing tool holder. The dynamic detection mechanism includes a supporting shell, four adjustment units, four sets of detection units, and a drive unit.

[0005] Preferably, the supporting shell is fixedly fitted onto the honing tool holder, and the supporting shell has four sets of through holes. The four adjustment units are disposed inside the supporting shell, and the four sets of detection units are disposed one-to-one on the four adjustment units. The outward-facing top detection end of the detection unit maintains the same radial height as the outer wall of the maximum outer circle of the honing head on the honing tool holder. The driving unit is fixedly disposed on the left side of the supporting shell, and the driving unit synchronously drives the four adjustment units to work synchronously.

[0006] Preferably, each adjustment unit includes a bidirectional lead screw, two moving blocks, two sets of support rods, a sliding plate, and two slide rails. The two ends of the bidirectional lead screw are rotatably connected to the left and right sides of the supporting housing, respectively. The two moving blocks are respectively threadedly connected to the two oppositely helical sections of the bidirectional lead screw. Two sets of support rods are movably connected to each of the two moving blocks, with two support rods in each set. One end of each support rod is movably disposed on the front and rear sides of the corresponding moving block, and the other end of each set of support rods is movably disposed on the bottom of the sliding plate. The two slide rails are fixedly disposed on the left and right sides inside the supporting housing, and the left and right sides of the sliding plate are slidably connected to the two slide rails. A set of detection units is fixedly disposed on the sliding plate, with three detection units in each set.

[0007] Preferably, each detection unit includes a detection box, a displacement sensor, a detection base, and a universal ball bearing. The detection box is fixedly mounted on the slide plate by a tripod and bolts. The displacement sensor is fixedly mounted inside the detection box, and the detection end of the displacement sensor extends outward from the outside of the detection box. The detection base is fixedly connected to the detection end of the displacement sensor, and the universal ball bearing is connected to the detection base.

[0008] Preferably, the drive unit includes a drive box, a transmission gear, a protective housing, a motor, an annular groove, an internal gear ring, and multiple sliders. The right side of the drive box is an open structure and is fixedly mounted on the honing tool holder. One side of the drive box opening is also fixedly connected to the left side of the support housing. One end of the bidirectional lead screw in each adjustment unit extends into the drive box and is rotatably connected to the left side of the drive box. A transmission gear is fixedly mounted on the bidirectional lead screw of each adjustment unit located in the drive box. The protective housing is fixedly disposed on the left side of the drive box. The motor is fixedly disposed inside the protective housing, and the drive end of the motor is fixedly connected to one end of one of the bidirectional lead screws. The annular groove is fixedly disposed on the inner wall of the drive box. Multiple sliders are fixedly disposed on the outer wall of the internal gear ring, and the multiple sliders are slidably connected to the annular groove. The internal gear ring meshes with the transmission gear.

[0009] Preferably, a plurality of pre-cleaning units are fixedly provided on the right side of the outer supporting shell, and the plurality of pre-cleaning units are also uniformly arranged around the circumference with the center of the honing tool bar as the reference.

[0010] Preferably, the pre-cleaning unit includes a linear slide, a locking assembly, a slide rod, and a cleaning brush. The linear slide is fixedly disposed on the right side of the outer side of the support housing. The locking assembly is fixedly disposed on the outer side of the linear slide. The slide rod is slidably connected to the linear slide and has multiple locking holes. The cleaning brush is fixedly disposed at the top of the slide rod. After the slide rod slides along the linear slide to a designated position, the locking assembly can cooperate with the locking holes on the slide rod to achieve positioning, locking, and fixing of the slide rod.

[0011] Preferably, the locking assembly includes a locking box, two springs, a movable plate, a locking pin, and a pull rod. The locking box is fixedly disposed on the outer wall of the linear slide groove. The two springs are located inside the locking box, with one end fixedly disposed on the left side inside the locking box. One side of the movable plate is fixedly connected to the other end of the two springs, and the movable plate is slidably connected to the inner wall of the locking box. The locking pin is fixedly disposed on the other side of the movable plate, and the locking pin movably passes through the interior of the linear slide groove and can be correspondingly engaged with the locking hole on the slide rod. The pull rod movably passes through the left side of the locking box, and one end is fixedly connected to one side of the movable plate.

[0012] Preferably, a centering mechanism I is fixedly installed on the processing platform to support the workpiece, and a centering mechanism II is installed on the traveling mechanism of the processing platform. The centering mechanism II can move back and forth with the traveling mechanism to support the honing tool bar.

[0013] Preferably, either the straightening mechanism I or the straightening mechanism II includes a support plate, a straightening frame, and a straightening module. The support plate is connected to the traveling mechanism, the straightening frame is fixedly mounted on the support plate, and the straightening module is mounted on the straightening frame. This invention provides an improved honing device for the inner bore of small-diameter thin-walled metal tubes. Compared with the prior art, it has the following improvements and advantages: Based on the diameter adjustment of the honing head in the honing tool holder, this invention synchronously drives the adjustment unit and the detection unit to complete radial adaptation adjustment, ensuring that the working dimension of the detection unit always remains consistent with the processing dimension of the honing head. This enables real-time online detection of tubes of different diameters after honing, improving the accuracy of inner bore dimension detection. Furthermore, this invention is equipped with a pre-cleaning unit, which can clean burrs, metal chips, and other impurities from the inner wall of the tube before honing and detection operations, preventing residual impurities from affecting the detection fit accuracy and tube processing quality, and ensuring the stability and reliability of the detection. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the isometric structure of the present invention; Figure 2 for Figure 1 A magnified structural diagram of position A; Figure 3 This is a schematic diagram of the isometric structure of the dynamic detection mechanism of the present invention; Figure 4 This is a front view schematic diagram of the dynamic detection mechanism of the present invention; Figure 5 This is a side view of the drive unit of the present invention. Figure 6 This is a top view of the adjustment unit of the present invention. Figure 7 This is a side view of the pre-cleaning unit of the present invention. Figure 8 This is a schematic diagram of the front view structure of the detection unit of the present invention; Figure 9 This is a schematic diagram of the front view of the straightening mechanism I of the present invention.

[0016] Explanation of reference numerals in the attached figures: 1. Machining platform; 2. Honing device; 21. Workpiece rotation clamping mechanism; 22. Traveling mechanism; 23. Tool holder rotation clamping mechanism; 24. Honing tool holder; 3. Oil supply mechanism; 4. Support shell; 5. Adjustment unit; 51. Two-way lead screw; 52. Moving block; 53. Support rod; 54. Slide plate; 55. Slide rail; 6. Detection unit; 61. Detection box; 62. Displacement sensor; 63. Detection base; 64. Universal ball bearing; 7. Drive unit; 71. Drive box; 72. Transmission gear; 73. Protective housing; 74. Motor; 75. Annular slide groove; 76. Internal gear ring; 77. Slider; 8. Pre-cleaning unit; 81. Linear slide groove; 82. Locking assembly; 82-1. Locking box; 82-2. Spring; 82-3. Moving plate; 82-4. Locking pin; 82-5. Pull rod; 83. Slide rod; 84. Cleaning brush; 9. Straightening mechanism I; 91. Support plate; 92. Straightening frame; 93. Straightening module; 10. Straightening mechanism II. Detailed Implementation

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0019] In the description of this invention, 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 one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Please see Figure 1-9This invention provides a technical solution: a honing device for the inner hole of a small-diameter thin-walled metal tube, comprising a processing platform 1, a honing device 2, and an oil supply mechanism 3. The honing device 2 includes a workpiece rotation clamping mechanism 21, a traveling mechanism 22, a tool holder rotation clamping mechanism 23, and a honing tool holder 24. The traveling mechanism 22 is fixedly mounted on the processing platform 1. The tool holder rotation clamping mechanism is connected to the traveling mechanism 22, and the traveling mechanism 22 can drive the tool holder rotation clamping mechanism to reciprocate along the processing platform 1, thereby driving the honing tool holder 24 clamped by the tool holder rotation clamping mechanism 23 to extend into the tube to complete the honing operation of the inner hole of the workpiece. The tool holder rotation clamping mechanism can clamp the honing tool holder 24 and drive it to rotate. The honing head on the honing tool holder 24 has a built-in expansion and contraction adjustment structure, which can be adjusted by the rear pull rod / The lead screw pushes the conical surface to open the abrasive strip, changing the outer diameter of the honing head to adapt to pipes with different inner diameters. The tool holder rotation clamping mechanism 23 can adopt any one of the three drive forms: pneumatic drive, hydraulic drive, or mechanical transmission drive. The workpiece rotation clamping mechanism 21 is fixedly set on the processing platform 1, and it and the tool holder rotation clamping mechanism 23 are arranged opposite each other at opposite ends, and their central axes are kept coincident. The oil supply mechanism 3 is fixedly set on the processing platform 1. The oil supply mechanism 3 can deliver oil to the honing processing area to achieve cooling, lubrication, and chip removal. The aforementioned processing platform 1, honing device 2, honing tool bar 24, oil supply mechanism 3, control box, and the workpiece rotation clamping mechanism 21, traveling mechanism 22, and tool bar rotation clamping mechanism 23 under the honing device 2 are all basic components of existing honing equipment that are mature and commonly used in this field. During operation, a small-diameter thin-walled metal tube is clamped and fixed on the workpiece rotating clamping mechanism 21. The workpiece rotating clamping mechanism 21 drives the tube to rotate around a common central axis. The tool bar rotating clamping mechanism 23 clamps the honing tool bar 24 and drives the honing tool bar 24 to rotate synchronously. The traveling mechanism 22 drives the tool bar rotating clamping mechanism 23 to make axial feed motion along the processing platform 1, so that the rotating honing tool bar 24 extends into the tube to hone the inner hole of the thin-walled tube. The oil supply mechanism 3 continuously supplies honing oil to the contact honing area between the tube and the honing tool bar 24, which simultaneously cools and lubricates the processing part and washes away the metal chips generated by honing. A dynamic detection mechanism for real-time detection of the inner diameter of the pipe fitting is fixedly installed on the honing tool holder 24. The dynamic detection mechanism includes a support shell 4, four adjustment units 5, four sets of detection units 6, and a drive unit 7. The four adjustment units 5 are used to synchronously drive the corresponding detection units 6 to radially extend and retract to adapt to different pipe fitting inner diameter specifications. The four sets of detection units 6 are used to collect inner diameter data in real time by fitting the inner surface of the pipe fitting. The drive unit 7 is used to synchronously output power to link the four adjustment units 5 to work together to complete the extension and retraction adjustment action.

[0021] Specifically, the support housing 4 is fixedly mounted on the honing tool holder 24, and the support housing 4 has four sets of through holes. Four adjustment units 5 are set inside the support housing 4, and four sets of detection units 6 are set on the four adjustment units 5 one by one. The top detection end of the detection unit 6 facing outward is at the same radial height as the outer wall of the maximum outer circle of the honing head on the honing tool holder 24, ensuring that the detection end can synchronously follow the honing head to contact the inner hole of the pipe, so as to realize that the honing process and dimensional detection are carried out simultaneously. The drive unit 7 is fixedly set on the left side of the support housing 4, and the drive unit 7 synchronously drives the four adjustment units 5 to work synchronously.

[0022] Specifically, each adjustment unit 5 includes a bidirectional lead screw 51, two moving blocks 52, two sets of support rods 53, a sliding plate 54, and two slide rails 55. The two ends of the bidirectional lead screw 51 are rotatably connected to the left and right sides of the support housing 4, respectively. The two moving blocks 52 are respectively threadedly connected to the two oppositely threaded sections of the bidirectional lead screw 51. Two sets of support rods 53 are movably connected to the two moving blocks 52, with two support rods in each set. One end of each support rod 53 is movably disposed on the front and rear sides of the corresponding moving block 52, and the other ends of the two sets of support rods 53 are movably disposed on the bottom of the sliding plate 54. The two slide rails 55 are fixedly disposed on the left and right sides inside the support housing 4, and the left and right sides of the sliding plate 54 are slidably connected to the two slide rails 55, respectively. A set of detection units 6 is fixedly disposed on the sliding plate 54, with three detection units in each set. When the adjustment unit 5 is working, the rotation of the bidirectional lead screw 51 uses its two reverse threads to drive two moving blocks 52 to move closer or further away in sync. During the movement, the moving blocks 52 drive the hinged support rods 53 on the front and rear sides to swing synchronously. Then, the two sets of support rods 53 push or pull the slide plate 54 synchronously, so that the slide plate 54 can make a smooth vertical linear motion with the limiting and guiding effect of the slide rails 55 on the left and right sides. This drives a set of detection units 6 fixed on the slide plate 54 to complete the radial extension and retraction adjustment synchronously. Finally, the detection position of the detection unit 6 is accurately adjusted, and the diameter of the honing head of the honing tool bar 24 changes synchronously to adapt to the detection operation requirements of pipe fittings with different inner diameters.

[0023] Specifically, each detection unit 6 includes a detection box 61, a displacement sensor 62, a detection base 63, and a universal ball bearing 64. The detection box 61 is fixedly mounted on the slide plate 54 by a tripod and bolts. The displacement sensor 62 is fixedly mounted inside the detection box 61, and the detection end of the displacement sensor 62 extends outward from the outside of the detection box 61. The detection base 63 is fixedly connected to the detection end of the displacement sensor 62, and the universal ball bearing 64 is connected to the detection base 63. When the detection unit 6 is working, the traveling mechanism 22 and the tool holder rotation clamping mechanism 23 can simultaneously drive the honing tool holder 24, the detection unit 6, and the adjustment unit 5 to complete linear feed motion and rotational motion. This allows the honing tool holder 24 to complete the honing of the inner hole of the pipe fitting, while the detection unit 6 can enter the pipe fitting along with the honing tool holder 24 to perform online detection following the processing stroke. During the operation, the universal ball bearing 64 directly contacts the inner wall of the pipe fitting. The change in the inner diameter generated during the honing process will push the universal ball bearing 64 to move. The universal ball bearing 64 drives the detection base 63 to move synchronously, which in turn pulls the detection end of the displacement sensor 62 to extend and retract synchronously. The displacement sensor 62 collects the displacement change data of the detection end in real time and calculates the real-time inner diameter of the pipe fitting.

[0024] Specifically, the drive unit 7 includes a drive housing 71, a transmission gear 72, a protective housing 73, a motor 74, an annular slide groove 75, an internal gear ring 76, and multiple sliders 77. The right side of the drive housing 71 is an open structure and is fixedly mounted on the honing tool holder 24. One side of the opening of the drive housing 71 is also fixedly connected to the left side of the support housing 4. One end of the bidirectional lead screw 51 in each adjustment unit 5 extends into the drive housing 71 and is rotatably connected to the left side of the drive housing 71. Each adjustment unit 5 has a transmission gear 72 fixedly mounted on its bidirectional lead screw 51. The protective housing 73 is fixedly installed on the left side of the drive box 71. The motor 74 is fixedly installed inside the protective housing 73, and the drive end of the motor 74 is fixedly connected to one end of one of the bidirectional lead screws 51. The annular slide groove 75 is fixedly installed on the inner wall of the drive box 71. Multiple sliders 77 are fixedly installed on the outer wall of the internal gear ring 76. The multiple sliders 77 are slidably connected to the annular slide groove 75. The internal gear ring 76 meshes with the transmission gear 72. When the drive unit 7 is working, the motor 74 outputs rotational power and drives the bidirectional lead screw 51 connected to it to rotate. The transmission gear 72 on the bidirectional lead screw 51 rotates synchronously with it. Through gear meshing, the internal gear ring 76 is driven to rotate. The internal gear ring 76 achieves circumferential stable limited rotation by sliding cooperation between the outer wall slider 77 and the annular slide groove 75 on the inner wall of the drive box 71. Then, through the simultaneous meshing of the internal gear ring 76, all other transmission gears 72 are driven to rotate synchronously in the same direction, so that each bidirectional lead screw 51 obtains consistent rotational power and operates synchronously, ultimately realizing the synchronous and coordinated action of the four adjustment units 5.

[0025] Specifically, multiple pre-cleaning units 8 are fixedly installed on the right side of the outer shell 4. The multiple pre-cleaning units 8 are also evenly arranged around the circumference with the center of the honing tool 24 as the reference. The pre-cleaning units 8 are used to extend into the pipe before the dynamic detection mechanism when the honing tool 24 is fed. In conjunction with the tool shank rotation clamping mechanism 23 and the traveling mechanism 22, the honing tool 24 is driven to complete the rotation and linear feed motion synchronously. This removes metal debris, burrs and other impurities attached to the inner wall of the pipe in advance, avoiding impurities from interfering with the contact between the detection unit 6 and the inner wall of the pipe. This ensures the accuracy of the inner hole size data of the pipe collected by the subsequent detection unit 6.

[0026] Specifically, the pre-cleaning unit 8 includes a linear slide 81, a locking component 82, a slide rod 83, and a cleaning brush 84. The linear slide 81 is fixedly disposed on the right side of the support housing 4. The locking component 82 is fixedly disposed on the outer side of the linear slide 81. The slide rod 83 is slidably connected to the linear slide 81, and multiple locking holes are provided on the slide rod 83. The cleaning brush 84 is fixedly disposed on the top of the slide rod 83. After the slide rod 83 slides along the linear slide 81 to the designated position, the locking component 82 can cooperate with the locking holes provided on the slide rod 83 to achieve the positioning, locking and fixing of the slide rod 83. The radial extension length of the cleaning brush 84 can be adjusted by sliding the slide rod 83. The working radius of the cleaning brush 84 can be adjusted according to the outer diameter of the honing head and the radial extension of the detection unit 6, which is suitable for the pre-cleaning operation of the inner wall of pipe fittings of different specifications. When the pre-cleaning unit 8 is working, the slide rod 83 is slid along the straight slide groove 81 to adjust the radial extension length of the cleaning brush 84 to match the outer diameter of the honing head and the extension of the detection unit 6. After the slide rod 83 is adjusted to the correct position, the locking component 82 and the locking hole of the slide rod 83 cooperate to lock the slide rod 83.

[0027] Specifically, the locking assembly 82 includes a locking box 82-1, two springs 82-2, a movable plate 82-3, a locking pin 82-4, and a pull rod 82-5. The locking box 82-1 is fixedly installed on the outer wall of the linear slide groove 81. The two springs 82-2 are located inside the locking box 82-1, and one end of each spring is fixedly installed on the left side inside the locking box 82-1. One side of the movable plate 82-3 is fixedly connected to the other end of the two springs 82-2, and the movable plate 82-3 is slidably connected to the inner wall of the locking box 82-1. The locking pin 82-4 is fixedly installed on the other side of the movable plate 82-3, and the locking pin 82-4 moves through the interior of the linear slide groove 81 and can be correspondingly engaged in the locking hole on the slide rod 83. The pull rod 82-5 moves through the left side of the locking box 82-1, and one end of the pull rod is fixedly connected to one side of the movable plate 82-3. When the locking assembly 82 is in use, pulling the lever 82-5 outward causes the moving plate 82-3 to compress the two springs 82-2 and move them to the left simultaneously. The moving plate 82-3 simultaneously causes the locking pin 82-4 to be pulled out from the locking hole of the slide rod 83, releasing the limiting fixation of the slide rod 83. At this time, the slide rod 83 can be slid freely to adjust the radial position of the cleaning brush 84. After the position adjustment is completed, the lever 82-5 is released, and the two springs 82-2 release their elastic force to push the moving plate 82-3 to reset to the right. The moving plate 82-3 causes the locking pin 82-4 to pass through the straight slide groove 81 and be inserted into the corresponding locking hole of the slide rod 83, completing the locking and positioning of the slide rod 83, thereby fixing the extension length of the cleaning brush 84.

[0028] Specifically, a straightening mechanism I9 is ​​fixedly installed on the processing platform 1 to support the workpiece and prevent the pipe from drooping and swaying during processing. A straightening mechanism II10 is installed on the traveling mechanism 22 of the processing platform. The straightening mechanism II10 can move back and forth with the traveling mechanism 22 to support the honing tool bar 24 and ensure the stability of the honing tool bar 24 during processing.

[0029] Specifically, both the straightening mechanism I9 and the straightening mechanism II10 include a support plate 91, a straightening frame 92, and a straightening module 93. The support plate 91 is connected to the traveling mechanism 22, and the straightening frame 92 is fixedly installed on the support plate 91. The straightening module 93 is an arc-shaped support bushing component that is conventionally used in existing honing equipment. The straightening module 93 of the straightening mechanism I9 is ​​detachably installed on the straightening frame 92. The appropriate model of the straightening module 93 can be flexibly replaced according to the actual inner diameter of the thin-walled metal tube to be processed. The number of installations of the straightening mechanism I9 is ​​determined according to the length of the workpiece.

[0030] This embodiment uses a contact structure with multiple sets of displacement sensors 62 and universal ball bearings 64 to achieve synchronous online detection of honing. Alternatively, the detection component can be omitted from the honing tool holder 24, and an existing pneumatic inner diameter measuring instrument can be used separately to detect the inner diameter of the pipe after the honing process is completed.

[0031] Working principle: First, determine the number of straightening mechanisms I9 installed on the processing platform 1 according to the actual length of the small-diameter thin-walled metal tube to be processed, and select the corresponding straightening module 93 according to the outer diameter of the tube. It is detachably assembled on the straightening frame 92 of the straightening mechanism I9 to provide stable support for the tube and prevent the tube from sagging or shaking during processing. Then, adjust the working parts of the equipment according to the inner diameter of the tube. The honing head on the honing tool bar 24 has a built-in expansion and contraction adjustment structure, which can push the conical surface to open the abrasive strip through the pull rod / screw at the rear end to change the outer diameter of the honing head, thereby adapting to tubes with different inner diameters. Then, the motor 74 in the drive unit 7 is started. The motor 74 drives a single bidirectional lead screw 51 to rotate. Through the meshing of the transmission gear 72 and the internal gear ring 76, and with the limiting sliding of the slider 77 and the annular slide groove 75, multiple sets of transmission gears 72 and bidirectional lead screws 51 are synchronized. The reverse thread of the bidirectional lead screw 51 drives the moving block 52 to move in opposite directions. Through the transmission of the support rod 53, the slide plate 54 is pushed to rise and fall smoothly radially along the slide rail 55. The radial extension positions of the four sets of detection units 6 are uniformly adjusted to ensure that the universal ball 64 at the top of the detection unit 6 and the outer wall of the maximum outer circle of the honing head maintain the same radial height, which is suitable for the current processing and inspection specifications of the pipe fitting. Then adjust the position of the pre-cleaning unit 8 to ensure that the outermost part of the cleaning brush 84 is on the same horizontal line as the honing head of the honing bar 24 and the detection unit 6. Pull the lever 82-5 of the locking assembly 82 to move the moving plate 82-3 to compress the spring 82-2 to the left, so that the locking pin 82-4 is disengaged from the locking hole of the slide bar 83, releasing the limit of the slide bar 83. Slide the slide bar 83 along the straight slide groove 81 to adjust the radial extension length of the cleaning brush 84 so that it matches the outer diameter of the honing head adjustment and the extension and retraction size of the detection unit 6, ensuring that the two are on the same horizontal line. After the adjustment is completed, release the lever 82-5, and the spring 82-2 rebounds and pushes the locking pin 82-4 into the locking hole, locking and fixing the position of the slide bar 83 and the cleaning brush 84. The workpiece rotation clamping mechanism 21 clamps and drives the thin-walled pipe to rotate at a constant speed around the central axis. At the same time, the tool bar rotation clamping mechanism 23 clamps the honing tool bar 24 and drives it to rotate at high speed. The traveling mechanism 22 drives the tool bar rotation clamping mechanism 23 to make axial feed motion along the processing platform 1, and simultaneously drives the honing tool bar 24, the dynamic detection mechanism and the pre-cleaning unit 8 to extend into the interior of the rotating pipe. During the process of the honing tool bar 24 being fed into the pipe fitting, the honing head at the end of the honing tool bar 24 contacts the inner hole of the pipe fitting to perform cutting and honing operations. Subsequently, multiple sets of pre-cleaning units 8, evenly arranged around the circumference, enter the inner cavity of the pipe fitting before the dynamic detection mechanism. They follow the rear side of the honing tool bar 24 to complete the rotation and linear feed actions synchronously. The cleaning brush 84 performs all-round pre-cleaning of the inner wall of the pipe fitting, scraping off the metal shavings, processing burrs and residual oil stains attached to the pipe wall, completely avoiding impurities from getting stuck in the processing and detection areas, preventing scratches on the inner wall of the pipe fitting, interfering with the fitting accuracy of the detection components, and clearing interference for subsequent high-precision dimensional detection. After the inner wall pre-cleaning is completed, the four sets of detection units 6 enter the pipe fitting synchronously with the honing process, realizing the simultaneous honing and real-time detection. During the operation, the universal ball 64 of the detection unit 6 always fits against the inner wall of the pipe fitting and moves in real time with the change of hole size generated by the honing process. The detection base 63 drives the detection end of the displacement sensor 62 to stretch and deform. The displacement sensor 62 continuously collects displacement data and accurately calculates the real-time inner diameter of the pipe fitting, completing the dynamic dimension monitoring of the entire processing process. After the honing and dimensional inspection of the inner hole of a single pipe fitting is completed, the traveling mechanism 22 drives the honing tool bar 24, the dynamic inspection mechanism and the pre-cleaning unit 8 to exit the inner cavity of the pipe fitting in the opposite direction. The workpiece rotation clamping mechanism 21 and the tool bar rotation clamping mechanism 23 stop operating in sequence, the oil supply mechanism 3 is turned off, and the equipment completes a single operation cycle. The operator can then remove the processed pipe fitting, replace the workpiece to be processed, and repeat the above operation process to achieve batch continuous processing.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A honing device for the inner hole of a small-diameter thin-walled metal tube, comprising a processing platform (1), a honing device (2), and an oil supply mechanism (3), wherein the honing device (2) comprises a workpiece rotation clamping mechanism (21), a traveling mechanism (22), a tool holder rotation clamping mechanism (23), and a honing tool holder (24), wherein the traveling mechanism (22) is fixedly mounted on the processing platform (1), the tool holder clamping rotation device is connected to the traveling mechanism (22), the tool holder clamping rotation device can clamp the honing tool holder (24) and drive it to rotate, the workpiece rotation clamping mechanism (21) is fixedly mounted on the processing platform (1), and the oil supply mechanism (3) is fixedly mounted on the processing platform (1), characterized in that, The honing tool bar (24) is fixedly equipped with a dynamic detection mechanism for real-time detection of the inner hole size of the pipe during the honing process. The dynamic detection mechanism includes a support shell (4), four adjustment units (5), four sets of detection units (6), and a drive unit (7).

2. The honing equipment for the inner bore of a small-diameter thin-walled metal tube according to claim 1, characterized in that, The supporting shell (4) is fixedly mounted on the honing tool rod (24), and four sets of through holes are provided on the supporting shell (4). The four adjustment units (5) are set inside the supporting shell (4), and the four sets of detection units (6) are set on the four adjustment units (5) one by one. The top detection end of the detection unit (6) facing outward is at the same radial height as the outer wall of the maximum outer circle of the honing head on the honing tool rod (24). The driving unit (7) is fixedly set on the left side of the supporting shell (4), and the driving unit (7) synchronously drives the four adjustment units (5) to work synchronously.

3. The honing equipment for the inner bore of a small-diameter thin-walled metal tube according to claim 2, characterized in that, Each adjustment unit (5) includes a bidirectional lead screw (51), two moving blocks (52), two sets of support rods (53), a sliding plate (54), and two slide rails (55). The two ends of the bidirectional lead screw (51) are rotatably connected to the left and right sides of the supporting housing (4), respectively. The two moving blocks (52) are respectively threadedly connected to the two oppositely helical sections of the bidirectional lead screw (51). Two sets of support rods (53) are movably connected to the two moving blocks (52), and the number of support rods (53) in each set is as follows. There are two support rods (53), one end of which is movably disposed on the front and rear sides of the corresponding moving block (52), and the other end of the two sets of support rods (53) is movably disposed on the bottom of the slide plate (54). The two slide rails (55) are fixedly disposed on the left and right sides of the support shell (4). The left and right sides of the slide plate (54) are slidably connected to the two slide rails (55). A set of detection units (6) is fixedly disposed on the slide plate (54), and the number of each set of detection units (6) is three.

4. The honing equipment for the inner bore of a small-diameter thin-walled metal tube according to claim 3, characterized in that, Each detection unit (6) includes a detection box (61), a displacement sensor (62), a detection base (63), and a universal ball bearing (64). The detection box (61) is fixedly mounted on the slide plate (54) by a tripod and bolts. The displacement sensor (62) is fixedly mounted inside the detection box (61), and the detection end of the displacement sensor (62) extends outward from the outside of the detection box (61). The detection base (63) is fixedly connected to the detection end of the displacement sensor (62), and the universal ball bearing (64) is connected to the detection base (63).

5. The honing equipment for the inner bore of a small-diameter thin-walled metal tube according to claim 4, characterized in that, The drive unit (7) includes a drive box (71), a transmission gear (72), a protective shell (73), a motor (74), an annular slide (75), an internal gear ring (76), and multiple sliders (77). The right side of the drive box (71) is an open structure and is fixedly mounted on the honing tool holder (24). One side of the opening of the drive box (71) is also fixedly connected to the left side of the support shell (4). One end of the bidirectional lead screw (51) in each adjustment unit (5) extends into the drive box (71) and is rotatably connected to the left side of the drive box (71). Each adjustment unit (5) located in the drive box (71) has a bidirectional lead screw (51) extending into the drive box (71) and rotatably connected to the left side of the drive box (71). Each of the two-way lead screws (51) of unit (5) is fixedly fitted with a transmission gear (72). The protective shell (73) is fixedly installed on the left side of the drive box (71). The motor (74) is fixedly installed inside the protective shell (73), and the drive end of the motor (74) is fixedly connected to one end of one of the two-way lead screws (51). The annular slide groove (75) is fixedly installed on the inner wall of the drive box (71). Multiple sliders (77) are fixedly installed on the outer wall of the internal gear ring (76). The multiple sliders (77) are slidably connected to the annular slide groove (75). The internal gear ring (76) meshes with the transmission gear (72).

6. The honing equipment for the inner bore of a small-diameter thin-walled metal tube according to claim 5, characterized in that, Multiple pre-cleaning units (8) are fixedly arranged on the right side of the outer supporting shell (4), and the multiple pre-cleaning units (8) are also evenly arranged around the circumference with the center of the honing tool bar (24) as the reference.

7. The honing equipment for the inner bore of a small-diameter thin-walled metal tube according to claim 6, characterized in that, The pre-cleaning unit (8) includes a linear slide (81), a locking assembly (82), a slide rod (83), and a cleaning brush (84). The linear slide (81) is fixedly disposed on the right side of the supporting housing (4). The locking assembly (82) is fixedly disposed on the outside side of the linear slide (81). The slide rod (83) is slidably connected to the linear slide (81), and multiple locking holes are provided on the slide rod (83). The cleaning brush (84) is fixedly disposed on the top of the slide rod (83). After the slide rod (83) slides along the linear slide (81) to the designated position, the locking assembly (82) can cooperate with the locking holes provided on the slide rod (83) to achieve the positioning, locking, and fixing of the slide rod (83).

8. The honing equipment for the inner bore of a small-diameter thin-walled metal tube according to claim 7, characterized in that, The locking assembly (82) includes a locking box (82-1), two springs (82-2), a movable plate (82-3), a locking pin (82-4), and a pull rod (82-5). The locking box (82-1) is fixedly mounted on the outer wall of the linear slide groove (81). The two springs (82-2) are located inside the locking box (82-1), with one end fixedly mounted on the left side inside the locking box (82-1). One side of the movable plate (82-3) is connected to the two springs (82-4). 2) The other end is fixedly connected, and the moving plate (82-3) is slidably connected to the inner wall of the locking box (82-1). The locking pin (82-4) is fixedly set on the other side of the moving plate (82-3), and the locking pin (82-4) moves through the inside of the straight slide groove (81) and can be correspondingly inserted into the locking hole on the slide rod (83). The pull rod (82-5) moves through the left side of the locking box (82-1), and one end of it is fixedly connected to one side of the moving plate (82-3).

9. A honing device for the inner bore of a small-diameter thin-walled metal tube according to claim 8, characterized in that, The processing platform (1) is also fixedly provided with a straightening mechanism I (9), which is used to support the workpiece. The walking mechanism (22) of the processing platform is provided with a straightening mechanism II (10), which can move back and forth with the walking mechanism (22) to support the honing tool bar (24).

10. A honing device for the inner bore of a small-diameter thin-walled metal tube according to claim 9, characterized in that, The straightening mechanism I (9) or the straightening mechanism II (10) both include a support plate (91), a straightening frame (92) and a straightening module (93). The support plate (91) is connected to the walking mechanism (22). The straightening frame (92) is fixedly installed on the support plate (91). The straightening module (93) is installed on the straightening frame (92).

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