Positioning and compensating device for end face milling of steel structure connecting plate

Abstract

The application relates to the technical field of milling devices, and discloses a positioning and compensating device for end face milling of a steel structure connecting plate, which comprises a milling machine, a positioning and compensating device, a longitudinal reference plate, a transverse adjusting mechanism, a height adjusting mechanism and a multistage buffer device. The longitudinal reference plate, the transverse adjusting mechanism and the height adjusting mechanism are arranged on the positioning device of the steel structure connecting plate, so that the steel structure connecting plate can be quickly positioned in X, Y and Z directions, the milling efficiency of the steel structure connecting plate is improved, the light beam of a laser sensor is vertically shot on the vertical milling end face of a workpiece, the offset of a reflected light spot is calculated by a laser receiver, the actual distance of the end face of the workpiece can be collected in real time, the comprehensive position error of the end face of the steel structure workpiece during the machining, the warping of the plate face and the milling thermal deformation can be accurately identified through data comparison and displacement correction, and the perpendicularity and flatness accuracy of the end face milling are ensured.

Description

Technical Field

[0001] This invention belongs to the field of milling processing equipment, and specifically relates to a positioning compensation device for milling the end face of steel structure connecting plates. Background Technology

[0002] Steel structure connection plates are steel plates or metal components used to connect two or more steel components, such as beams, columns, web members, supports, etc. Force is transmitted and the whole assembly is achieved through welding, high-strength bolts or rivets. They are commonly found at joints and serve to transmit force, coordinate deformation or facilitate installation. Based on the above, as the core component for connecting steel structure members, the end face machining accuracy of the steel structure connecting plate directly affects the fit of the connection part. Therefore, the steel structure connecting plate needs to be finished by end face milling. However, the milling process has several unique challenges: the milling cutter generates continuous impact vibration, which can easily cause the workpiece to loosen and the end face to produce vibration marks, resulting in a decrease in the perpendicularity and dimensional accuracy of the milled end face. Traditional milling positioning devices can only achieve static clamping and cannot cooperate with the milling process to dynamically compensate for errors and suppress milling vibration, which seriously restricts the quality of end face milling. This application proposes a positioning compensation device for milling the end face of steel structure connecting plates, thereby improving upon the aforementioned defects. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a positioning compensation device for milling the end face of steel structure connecting plates with positioning processing function for steel structure connecting plates of different specifications.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A positioning compensation device for milling the end face of a steel structure connecting plate includes a milling machine and a positioning compensation device, wherein the positioning compensation device capable of positioning the steel structure connecting plate is fixedly installed on the worktable of the milling machine.

[0005] In one specific implementation scheme, the base, the longitudinal reference plate, the lateral adjustment mechanism, and the height adjustment mechanism are provided. The base is a horizontally arranged rigid base plate. One end of the base is fixed with the longitudinal reference plate. A lateral adjustment mechanism is installed on one side of the longitudinal reference plate. A height adjustment mechanism is provided directly below the lateral adjustment mechanism. The height adjustment mechanism is installed on the base.

[0006] In one specific implementation, both the lateral adjustment mechanism and the height adjustment mechanism are mounted on the base and electrically connected to an external control system, thereby enabling them to operate.

[0007] In one specific implementation scheme, the inner wall of the longitudinal reference plate is a longitudinal positioning reference surface, which is a fixed rigid reference that can fit and limit the rear side of the steel structure workpiece to lock the forward and backward X-axis displacement. Furthermore, several pressure sensors are embedded in the positioning reference surface of the longitudinal reference plate and are distributed in an array.

[0008] In one specific implementation scheme, the lateral adjustment mechanism includes a base plate, a cylinder, a push plate, a clamping assembly, a gear, a second clamping assembly, and a slide rail. One side of the base plate is fixedly mounted on a longitudinal reference plate. A cylinder is mounted on the base plate, and the piston end of the cylinder is connected to the push plate. A clamping assembly is connected to the top of the push plate. A second clamping assembly is symmetrically arranged on one side of the clamping assembly. A gear meshes between the second clamping assembly and the clamping assembly. The gear is connected to the base plate through a bearing mounted at the bottom. The bottoms of both the clamping assembly and the second clamping assembly slide in cooperation with the slide rail. Two sets of slide rails are provided and mounted on the base plate.

[0009] In one specific implementation, the clamping assembly and the second clamping assembly have the same structure and are symmetrically arranged.

[0010] In one specific implementation, the clamping assembly includes a support plate, a slider, a rack, and a clamping plate. The bottom of the support plate is equipped with the slider and the rack. The slider slides in cooperation with a slide rail. One side of the rack meshes with a gear. The top of the support plate is fixed with a clamping plate.

[0011] In one specific implementation scheme, elastic buffer pads are installed on the side walls of the two sets of clamping plates facing each other. The side of the elastic buffer pads away from the clamping plates is provided with anti-slip teeth, which can play an anti-slip role when clamping the steel structure plate. A displacement sensor is installed inside the elastic buffer pads to detect the displacement of the clamping plates in real time.

[0012] In one specific implementation, the height adjustment mechanism includes a motor, a ball screw, a slide bar, a movable seat, and a height limiting plate. The motor is mounted on the base, and the output end of the motor passes through the base and is connected to the ball screw. A slide bar is provided on one side of the ball screw, and the slide bar is also mounted on the base. Movable seats are slidably fitted on both the slide bar and the ball screw. A height limiting plate is connected between the two sets of movable seats. The movable seats on the ball screw have built-in guide members that can convert rotational motion into linear motion.

[0013] In one specific implementation, the bottom of the base is connected to a multi-stage buffer device, the bottom of which is fitted against the surface of the milling table.

[0014] In one specific implementation scheme, the multi-stage buffer device includes a mounting plate, a top plate, a mounting frame, elastic buffer groups, and support groups. The bottom of the mounting plate is connected to the milling worktable, and a top plate is located directly above the mounting plate. A mounting frame is located between the top plate and the mounting plate. Several elastic buffer groups and support groups are mounted on the mounting frame. The elastic buffer groups are mounted on the mounting frame at four equally spaced points. Each elastic buffer group has support groups on both sides. The upper and lower ends of several support groups are connected to the mounting plate and the top plate, respectively.

[0015] In one specific implementation scheme, the support assembly includes a push rod, a connecting rod, a rotating seat, a movable block, a spring damper, and a guide rod. One end of the push rod is rotatably engaged with the connecting rod on the movable block. The other ends of both the push rod and the connecting rod are mounted on the rotating seat. The two sets of rotating seats are respectively connected to the mounting plate and the top plate. Two push rods and two connecting rods are symmetrically arranged. The movable block is disposed on the guide rod and slidably engaged with the guide rod. The guide rod is fixed on the mounting frame. One end of the movable block is equipped with a spring damper, and the other end of the spring damper is connected to the mounting frame.

[0016] In one specific implementation, a rubber post is mounted on the end of the movable block away from the spring damper, and the rubber post is located on the guide rod and slides in engagement with the guide rod.

[0017] In one specific implementation scheme, the elastic buffer group includes a lower support column, an upper support column, and an airbag. The lower support column is mounted on a mounting plate, and an airbag is installed on the top of the lower support column. The upper support column is located on the top of the airbag. The upper support column is connected to the top plate, and both the upper and lower support columns are located inside the mounting frame.

[0018] In one specific implementation, a laser sensor and a laser receiver are installed at the end of the base away from the longitudinal reference plate. The laser sensor is capable of receiving the signal emitted by the laser sensor and transmitting the received signal to the control unit via electrical connection.

[0019] According to the above-mentioned technical solution, the positioning compensation device for end face milling of steel structure connecting plates of the present invention has the following beneficial effects: (1) The present invention provides a longitudinal reference plate, a transverse adjustment mechanism and a height adjustment mechanism on the positioning device of the steel structure connecting plate, which enables the rapid positioning of the installation position of the end face milling of the steel structure connecting plate from the X, Y and Z directions, thereby improving the milling efficiency of the steel structure connecting plate.

[0020] (2) By setting the longitudinal reference plate as a fixed rigid reference, the present invention can fit and limit the rear side of the steel structure workpiece to lock the front and rear X-direction displacement. Furthermore, a number of arrayed pressure sensors are embedded in the positioning reference surface of the longitudinal reference plate, which can detect the fit between the steel structure workpiece and the longitudinal reference plate. When a local fit is not tight, i.e. the pressure value is lower than the preset threshold, a signal will be sent to the control unit to issue a reminder, thereby improving the reliability of the positioning reference.

[0021] (3) The present invention provides an elastic buffer pad on the clamping plate of the transverse adjustment mechanism, which can play a role in anti-slip and buffering when clamping the steel structure plate. Furthermore, a displacement sensor is installed inside the elastic buffer pad to detect the displacement during the clamping process of the clamping plate in real time, thereby automatically distinguishing between thin and thick parts and automatically adjusting the clamping force of the two sets of clamping plates.

[0022] (4) The present invention provides a multi-level buffer device at the bottom of the base. The weight of the base will act on the top plate, causing the connecting rod and push rod connected to the top plate to move outward. With the help of the moving block, they move forward together and squeeze the two adjacent sets of rubber columns. With the help of the rubber columns and spring damping, the base can be buffered and shock-absorbing. When the steel structure connecting plate is milled, the vibration generated during the milling will be absorbed and buffered, ensuring that the milling accuracy and position will not be shifted due to vibration.

[0023] (5) The present invention provides a laser sensor at one end of the base. The laser beam of the laser sensor is reflected after hitting the vertical end face of the workpiece to be milled vertically. The reflected beam is received by the laser receiver and the offset of the reflected spot is calculated. The actual straight distance between the sensor and the vertical end face of the workpiece can be calculated in real time. The sensor collects the actual distance of the end face of the workpiece in real time. Through data comparison, the comprehensive position error caused by the positioning offset, plate warping and milling thermal deformation of the end face of the steel structure workpiece during processing can be accurately identified. It can also drive the horizontal adjustment mechanism and the height adjustment mechanism to make a small displacement correction, so as to ensure the verticality and flatness accuracy of the end face milling. Attached Figure Description

[0024] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of a positioning compensation device for milling the end face of a steel structure connecting plate according to an embodiment of this application; Figure 2 This is a schematic diagram of the positioning compensation device in the embodiments of this application; Figure 3 This is a schematic diagram of the lateral adjustment mechanism in an embodiment of this application; Figure 4This is a schematic diagram of the clamping assembly in an embodiment of this application; Figure 5 Examples of this application Figure 4 Enlarged diagram of A in the middle; Figure 6 This is a schematic diagram of the height adjustment mechanism in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the multi-stage buffer device in the embodiments of this application; Figure 8 This is a schematic diagram of the support group in an embodiment of this application; Figure 9 Examples of this application Figure 7 Enlarged diagram of B in the diagram; Figure 10 This is a schematic diagram of the structure of the elastic buffer group in the embodiments of this application; Figure 11 This is a schematic diagram of the structure of the laser sensor in the embodiments of this application.

[0025] In the diagram: Milling machine-01, Positioning compensation device-02, Base-1, Longitudinal reference plate-2, Lateral adjustment mechanism-3, Height adjustment mechanism-4, Base plate-31, Cylinder-32, Push plate-33, Clamping assembly-34, Gear-35, Second clamping assembly-36, Slide rail-37, Support plate-341, Slider-342, Rack-343, Clamping plate-344, Elastic buffer pad-345, Motor-41, Ball screw-42, Slide bar-43, Moving... Moving seat-44, height limit plate-45, multi-stage buffer device-5, mounting plate-51, top plate-52, mounting bracket-53, elastic buffer group-54, support group-55, push rod-551, connecting rod-552, rotating seat-553, moving block-554, spring damping-555, guide rod-556, rubber column-557, lower support column-541, upper support column-542, airbag-543, laser sensor-11, laser receiver-12. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0027] Example 1: Please refer to Figures 1-6 The specific embodiments of the present invention are as follows: A positioning compensation device for milling the end face of a steel structure connecting plate includes a milling machine 01 and a positioning compensation device 02. The positioning compensation device 02, which is capable of positioning the steel structure connecting plate, is fixedly installed on the worktable of the milling machine 01.

[0028] Please see Figure 2The positioning compensation device 02 includes a base 1, a longitudinal reference plate 2, a lateral adjustment mechanism 3, and a height adjustment mechanism 4. The base 1 is a horizontally set rigid base plate. The longitudinal reference plate 2 is fixed at one end of the base 1. The lateral adjustment mechanism 3 is installed on one side of the longitudinal reference plate 2. The height adjustment mechanism 4 is located directly below the lateral adjustment mechanism 3 and is installed on the base 1.

[0029] Please see Figure 2 Both the lateral adjustment mechanism 3 and the height adjustment mechanism 4 are mounted on the base 1 and are electrically connected to the external control system, thereby enabling them to operate.

[0030] Please see Figure 2 The inner wall of the longitudinal reference plate 2 is a longitudinal positioning reference surface, which is a fixed rigid reference. It can fit and limit the rear side of the steel structure workpiece to lock the forward and backward X-axis displacement. Several pressure sensors are embedded in the positioning reference surface of the longitudinal reference plate 2 and are distributed in an array. They can detect the fit between the steel structure workpiece and the longitudinal reference plate 2. When a local loose fit is detected, that is, when the pressure value is lower than the preset threshold, a signal will be sent to the control unit to issue a reminder, thereby improving the reliability of the positioning reference.

[0031] Please see Figure 3 The lateral adjustment mechanism 3 includes a base plate 31, a cylinder 32, a push plate 33, a clamping assembly 34, a gear 35, a second clamping assembly 36, and a slide rail 37. One side of the base plate 31 is fixedly installed on the longitudinal reference plate 2. The cylinder 32 is installed on the base plate 31. The piston end of the cylinder 32 is connected to the push plate 33. The top of the push plate 33 is connected to the clamping assembly 34. The second clamping assembly 36 is symmetrically arranged on one side of the clamping assembly 34. The gear 35 meshes between the second clamping assembly 36 and the clamping assembly 34. The gear 35 is connected to the base plate 31 through a bearing installed at the bottom. The bottoms of the clamping assembly 34 and the second clamping assembly 36 are slidably engaged with the slide rail 37. Two sets of slide rails 37 are provided and installed on the base plate 31.

[0032] Please see Figure 3 The clamping assembly 34 and the second clamping assembly 36 have the same structure and are symmetrically arranged.

[0033] Please see Figure 4 The clamping assembly 34 includes a support plate 341, a slider 342, a rack 343, and a clamping plate 344. The slider 342 and the rack 343 are installed at the bottom of the support plate 341. The slider 342 is slidably engaged with the slide rail 37. One side of the rack 343 is engaged with the gear 35. The clamping plate 344 is fixed at the top of the support plate 341.

[0034] Please see Figures 3-4When the cylinder 32 operates, it drives the piston end to push forward. With the help of the push plate 33 connected to the piston end, it pushes forward in sync, which can drive the clamping assembly 34 located on one side of the gear 35 to move forward on the slide rail 37. The gear 35 is driven to rotate through the rack 343. As the gear 35 rotates, it will drive the rack 343 on the second clamping assembly 36 on one side to move backward, so that the two sets of clamping plates 344 can move relative to each other or towards each other, which can clamp and position steel structure connecting plates of different widths.

[0035] Please see Figure 5 Elastic buffer pads 345 are installed on the side wall of the two sets of clamping plates 344 facing each other. The side of the elastic buffer pads 345 away from the clamping plates 344 is provided with anti-slip teeth, which can play an anti-slip role when clamping the steel structure plate. A displacement sensor is installed inside the elastic buffer pads 345, which can detect the displacement of the clamping plates 344 in real time during the clamping process. When the cylinder 32 moves the clamping assembly 34, the displacement sensor collects the feed displacement in real time and transmits the signal to the control unit. The control unit calculates the thickness of the steel structure workpiece being processed through the displacement received by the PLC, and then automatically distinguishes between thin and thick parts. Based on the workpiece thickness identified by the PLC, the control unit automatically adjusts the clamping force of the two sets of clamping plates 344. When the workpiece is thin, the feed is limited to a small stroke to prevent excessive compression that could cause workpiece deformation. When the workpiece is thick, the cylinder 32 moves normally.

[0036] Please see Figure 6 The height adjustment mechanism 4 includes a motor 41, a ball screw 42, a slide bar 43, a movable seat 44, and a height limiting plate 45. The motor 41 is mounted on the base 1, and the output end of the motor 41 passes through the base 1 and is connected to the ball screw 42. A slide bar 43 is provided on one side of the ball screw 42, and the slide bar 43 is also mounted on the base 1. Movable seats 44 are slidably fitted on both the slide bar 43 and the ball screw 42. A height limiting plate 45 is connected between the two sets of movable seats 44. The movable seats 44 on the ball screw 42 have built-in guide members that can convert rotational motion into linear motion.

[0037] Please see Figure 6 The motor 41 drives the ball screw 42 to rotate. After the rotational motion is converted into linear motion by the guide, it will drive the moving seat 44 and the height limiting plate 45 located on the moving seat 44 to move upward. The slide bar 43 on one side can increase the stability of the movement of the height limiting plate 45. As the height limiting plate 45 moves upward, the position of the height direction of the steel structure connecting plate can be adjusted. It is suitable for steel structure connecting plates of different specifications, realizes the precise vertical height limit of the workpiece and the overall horizontal leveling, and prevents problems such as height deviation, suspension collapse, tilting and warping of steel structure workpieces.

[0038] Example 2: Please refer to Figures 7-10 The specific embodiments of the present invention are as follows: Please see Figure 7 The bottom of the base 1 is connected to a multi-stage buffer device 5. The bottom of the multi-stage buffer device 5 is attached to the surface of the milling worktable, which can play a role in buffering and shock absorption when the base 1 is milled.

[0039] Please see Figure 7 The multi-stage buffer device 5 includes a mounting plate 51, a top plate 52, a mounting frame 53, elastic buffer groups 54, and support groups 55. The bottom of the mounting plate 51 is connected to the milling worktable. The top plate 52 is located directly above the mounting plate 51. The mounting frame 53 is located between the top plate 52 and the mounting plate 51. Several elastic buffer groups 54 and support groups 55 are installed on the mounting frame 53. The elastic buffer groups 54 are installed on the mounting frame 53 at four equal points. Each elastic buffer group 54 has support groups 55 on both sides. The upper and lower ends of the support groups 55 are connected to the mounting plate 51 and the top plate 52, respectively.

[0040] Please see Figures 8-9 The support assembly 55 includes a push rod 551, a connecting rod 552, a rotating seat 553, a moving block 554, a spring damper 555, and a guide rod 556. One end of the push rod 551 is rotatably engaged with the connecting rod 552 on the moving block 554. The other ends of the push rod 551 and the connecting rod 552 are both mounted on the rotating seat 553. The two sets of rotating seats 553 are respectively connected to the mounting plate 51 and the top plate 52. Two push rods 551 and two connecting rods 552 are symmetrically arranged. The moving block 554 is located on the guide rod 556 and is slidably engaged with the guide rod 556. The guide rod 556 is fixed on the mounting frame 53. One end of the moving block 554 is equipped with a spring damper 555, and the other end of the spring damper 555 is connected to the mounting frame 53.

[0041] Please see Figures 8-9 A rubber post 557 is installed at the end of the movable block 554 away from the spring damper 555. The rubber post 557 is located on the guide rod 556 and slides in cooperation with the guide rod 556.

[0042] Please see Figures 8-9 When the top plate 52 contacts the base 1, the weight of the base 1 acts on the top plate 52 and applies downward pressure, thereby driving the connecting rod 552 and push rod 551 connected to the top plate 52 to move outward, and simultaneously driving the moving block 554 to move forward together, and squeezing the two adjacent sets of rubber columns 557. With the help of the rubber columns 557 and spring damping 555, the base 1 can be buffered and shock-absorbing. When the steel structure connecting plate is milled, the vibration generated during the milling process will be absorbed and buffered, ensuring that the milling accuracy and position will not be shifted due to vibration.

[0043] Please see Figure 10The elastic buffer group 54 includes a lower support column 541, an upper support column 542, and an airbag 543. The lower support column 541 is mounted on the mounting plate 51. An airbag 543 is mounted on the top of the lower support column 541. An upper support column 542 is located on the top of the airbag 543. The upper support column 542 is connected to the top plate 52. Both the upper support column 542 and the lower support column 541 are located inside the mounting frame 53.

[0044] Please see Figures 8-9 When the top plate 52 moves downward under the gravity of the base 1, it will simultaneously drive the upper support column 542 to move downward and squeeze the airbag 543. The array of several sets of airbags 543 can work together with the rubber column 557 to buffer the base 1.

[0045] Based on the above embodiments one and two, the specific working principle is as follows: When it is necessary to mill the end face of the steel structure connecting plate, the steel structure processing part is placed on the height adjustment mechanism 4 of the base 1, with one end tightly attached to the longitudinal reference plate 2. The fitting degree of the steel structure processing part is detected by several pressure sensors provided on the contact surface of the longitudinal reference plate 2. Then, the ball screw 42 is driven to rotate by the motor 41, which will drive the moving seat 44 and the height limiting plate 45 located on the moving seat 44 to move upward, adjusting the height position of the steel structure connecting plate until the steel structure connecting plate can contact the clamp 344 on the transverse adjustment mechanism 3 and then stop. At this time, the drive cylinder 32 drives the piston end to push forward, and the push plate 33 connected to the piston end pushes forward in sync, driving the clamping assembly 34 located on one side of the gear 35 to move forward on the slide rail 37, and the rack 343 drives the gear 35 to rotate. As the gear 35 rotates, it will drive the rack 343 on the second clamping assembly 36 on one side to move backward, so that the two sets of clamping plates 344 move relative to each other or towards each other, and clamp the steel structure connecting plate on the height limiting plate 45 to center and clamp it, so that the steel structure connecting plate can be in the center point of the processing, ensuring the accuracy of the milling process, and then driving the milling machine 01 to perform milling processing; When the steel structure connecting plate is placed on the base 1, its weight and that of the base 1 will act on the top plate 52 and apply downward pressure, causing the connecting rod 552 and push rod 551 connected to the top plate 52 to move outward, and simultaneously causing the moving block 554 to move forward together to squeeze the two adjacent sets of rubber columns 557. With the help of the rubber columns 557 and the spring damping 555, the base 1 can be buffered and shock-absorbing. When the steel structure connecting plate is milled, the vibration generated during the milling process will be absorbed and buffered, ensuring that the milling accuracy and position will not be shifted due to vibration.

[0046] Example 3: Please refer to Figure 11 The specific embodiments of the present invention are as follows: Please see Figure 11 A laser sensor 11 and a laser receiver 12 are installed at the end of the base 1 away from the longitudinal reference plate 2. The laser sensor 12 can receive the signal emitted by the laser sensor 11 and transmit the received signal to the control unit via electrical connection.

[0047] Please see Figure 11 The laser sensor 11 emits a beam of light forward, which is perpendicular to the vertical end face of the workpiece to be milled. After the laser irradiates the end face of the workpiece, it is reflected. The photosensitive element inside the laser receiver 12 receives the reflected beam. By accurately calculating the offset of the reflected light spot, the actual straight-line distance between the sensor and the vertical processing end face of the workpiece can be calculated in real time. The sensor collects the actual distance of the end face of the workpiece in real time. By comparing the data, the sensor accurately identifies the positioning offset, warping of the plate surface, and comprehensive position error caused by milling thermal deformation of the end face of the steel structure workpiece during processing, and transmits the signal to the control unit. After receiving the deviation signal, the control unit drives the horizontal adjustment mechanism 3 and the height adjustment mechanism 4 to make slight displacement corrections. This can automatically offset the positioning errors caused by workpiece offset, plate warping, and high-temperature thermal deformation during milling. The real-time dynamic correction ensures that the vertical end face of the workpiece is always in the standard machining position, guaranteeing the perpendicularity and flatness accuracy of the end face milling.

[0048] The control method of the present invention is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Therefore, the present invention will not explain the control method and circuit connection in detail.

[0049] In the description of this invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0050] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A positioning compensation device for milling the end face of a steel structure connecting plate, comprising a milling machine (01) and a positioning compensation device (02), wherein the milling machine (01) has a fixedly mounted positioning compensation device (02) for positioning the steel structure connecting plate, the positioning compensation device (02) comprising a base (1), a longitudinal reference plate (2) located at one end of the base (1), a transverse adjustment mechanism (3) mounted on one side of the longitudinal reference plate (2), and a height adjustment mechanism (4) located directly below the transverse adjustment mechanism (3), the height adjustment mechanism (4) being mounted on the base (1); characterized in that: The lateral adjustment mechanism (3) includes a base plate (31), a cylinder (32) mounted on the base plate (31), a push plate (33) located at the piston end of the cylinder (32), a clamping assembly (34) located on the top of the push plate (33), a second clamping assembly (36) symmetrically located on one side of the clamping assembly (34), and a gear (35) meshing between the second clamping assembly (36) and the clamping assembly (34). The gear (35) is connected to the base plate (31) through a bearing mounted at the bottom. The bottoms of the clamping assembly (34) and the second clamping assembly (36) are slidably engaged with a slide rail (37). The slide rail (37) has two sets and is mounted on the base plate (31). The bottom of the base (1) is connected to a multi-stage buffer device (5), and the bottom of the multi-stage buffer device (5) is fitted onto the table surface of the milling worktable. The multi-stage buffer device (5) includes a mounting plate (51), a top plate (52) located directly above the mounting plate (51), a mounting frame (53) located between the top plate (52) and the mounting plate (51), a plurality of elastic buffer groups (54) and support groups (55) mounted on the mounting frame (53). The elastic buffer groups (54) are mounted on the mounting frame (53) at four equal points. Each elastic buffer group (54) has a support group (55) on both sides. The upper and lower ends of the plurality of support groups (55) are respectively connected to the mounting plate (51) and the top plate (52). A laser sensor (11) and a laser receiver (12) are installed at one end of the base (1) away from the longitudinal reference plate (2). The laser sensor (12) can receive the signal emitted by the laser sensor (11) and transmit the received signal to the control unit via electrical connection.

2. The positioning compensation device for end face milling of steel structure connecting plates according to claim 1, characterized in that: The inner wall of the longitudinal reference plate (2) is a longitudinal positioning reference surface, which is a fixed rigid reference. Several pressure sensors are embedded in the positioning reference surface of the longitudinal reference plate (2) and are distributed in an array.

3. A positioning compensation device for milling the end face of a steel structure connecting plate according to claim 1, characterized in that: The clamping assembly (34) includes a support plate (341), a slider (342), a rack (343), and a clamping plate (344). The bottom of the support plate (341) is equipped with a slider (342) and a rack (343). The slider (342) is slidably engaged with a slide rail (37). One side of the rack (343) is engaged with a gear (35). The top of the support plate (341) is fixed with a clamping plate (344).

4. A positioning compensation device for milling the end face of a steel structure connecting plate according to claim 3, characterized in that: An elastic buffer pad (345) is installed on one side wall of the two sets of clamping plates (344) facing each other. The side of the elastic buffer pad (345) away from the clamping plate (344) is provided with anti-slip teeth. A displacement sensor is installed inside the elastic buffer pad (345). The displacement sensor detects the displacement of the clamping plate (344) in real time during the clamping process and transmits the signal to the control unit. The control unit calculates the thickness of the steel structure workpiece being processed through the PLC and then automatically distinguishes between thin and thick parts.

5. A positioning compensation device for end face milling of steel structure connecting plates according to claim 1, characterized in that: The height adjustment mechanism (4) includes a motor (41), a ball screw (42) located at the output end of the motor (41), a slide rod (43) located on one side of the ball screw (42), and a movable seat (44) that is slidably fitted on the slide rod (43) and the ball screw (42). A height limiting plate (45) is connected between the two sets of movable seats (44).

6. A positioning compensation device for end face milling of steel structure connecting plates according to claim 1, characterized in that: The support assembly (55) includes a push rod (551), a connecting rod (552), a rotating seat (553), a moving block (554), a spring damper (555), and a guide rod (556). One end of the push rod (551) is rotatably engaged with the connecting rod (552) on the moving block (554). The other ends of the push rod (551) and the connecting rod (552) are both mounted on the rotating seat (553). The two sets of rotating seats (553) are respectively connected to the mounting block (554). The mounting plate (51) and the top plate (52) are connected. Two push rods (551) and two connecting rods (552) are symmetrically provided. The moving block (554) is located on the guide rod (556) and slides with the guide rod (556). The guide rod (556) is fixed on the mounting frame (53). One end of the moving block (554) is equipped with a spring damper (555), and the other end of the spring damper (555) is connected to the mounting frame (53).

7. A positioning compensation device for milling the end face of a steel structure connecting plate according to claim 6, characterized in that: A rubber post (557) is installed at the end of the movable block (554) away from the spring damper (555), and the rubber post (557) is located on the guide rod (556) and slides with it.

8. A positioning compensation device for milling the end face of a steel structure connecting plate according to claim 1, characterized in that: The elastic buffer group (54) includes a lower support column (541), an upper support column (542) and an airbag (543). The airbag (543) is installed on the top of the lower support column (541), and the upper support column (542) is provided on the top of the airbag (543). Both the upper support column (542) and the lower support column (541) are located inside the mounting frame (53).

9. A positioning compensation device for end face milling of steel structure connecting plates according to claim 1, characterized in that: The laser sensor (11) emits a beam forward, which hits the vertical end face of the workpiece to be milled vertically. After the laser irradiates the end face of the workpiece, it is reflected. The photosensitive element inside the laser receiver (12) receives the reflected beam and calculates the offset of the reflected spot. It can calculate the actual straight-line distance between the sensor and the vertical processing end face of the workpiece in real time.

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