Online machining method for mounting surface of rolling line roller bed frame base

Abstract

The invention discloses an on-line machining method for a rolling line roller way frame base installation face. The method comprises the steps that on-line machining equipment and a measuring tool are prepared; on-line detection is carried out on the mounting surface of the roller bed frame base, size data are obtained, and a basis is provided for making a machining scheme; according to measured data, an online machining scheme is formulated in combination with design requirements and material characteristics of a mounting surface drawing; the machining devices are adjusted in place through the installation bottom plate, the installation bottom plate is fixed through the fixing and supporting device welded to the roller way, and the machining devices are installed at the two ends of the installation bottom plate. Machining equipment is started, and the machining equipment at the two ends of the mounting bottom plate is used for cutting and machining the mounting surfaces of the transmission side and the operation side; carrying out precision detection on the processing part until the qualified standard is reached; and after the mounting surface is cleaned and protected, repairing of the mounting surface is completed. According to the method, the roller way frame does not need to be disassembled, the repairing efficiency is improved, meanwhile, the disassembling and assembling cost is reduced, the repairing precision of the mounting face is improved, and stable conveying of the rolling line steel plate is ensured.

Description

Technical Field

[0001] This invention relates to the field of online maintenance technology for mechanical equipment, and in particular to an online processing method for the mounting surface of a rolling mill roller table base. Background Technology

[0002] The mounting surface of the roller conveyor base is subjected to immense rolling forces for extended periods, while also dealing with complex and variable operating conditions. In this high-intensity, high-load environment, the mounting surface gradually develops problems such as corrosion, wear, and deformation. Corrosion damages the mounting surface, reducing its structural stability and durability; wear decreases the fit accuracy between the mounting surface and related components, affecting the flatness of the rolled steel plate; and deformation directly interferes with the normal operation of the rolling line, making it difficult to meet the expected process standards for product dimensional accuracy and surface quality, thus compromising product quality stability and reliability. To address corrosion, wear, and deformation issues on the roller conveyor base mounting surface, the roller conveyor is typically manually ground or disassembled for offline repair, and then reassembled after the mounting surface accuracy is restored.

[0003] The manual grinding or offline repair methods used to address the wear problem of the roller conveyor base mounting surface have been able to repair the roller conveyor, but manual grinding is difficult to guarantee installation accuracy, and offline repair is time-consuming and costly. During the annual maintenance period, when the schedule is tight, the repair task cannot be completed in a timely manner. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an online processing method for the mounting surface of the roller conveyor base. This method overcomes the defects of traditional mounting surface repair operations, eliminates the need to disassemble the roller conveyor, improves repair efficiency while reducing disassembly and assembly costs, improves the repair accuracy of the mounting surface, and ensures the stable transport of rolled steel plates.

[0005] To solve the above-mentioned technical problems, the present invention provides an online processing method for the mounting surface of a rolling mill roller table base, comprising the following steps: Step 1: Prepare online processing equipment. Prepare all necessary online processing equipment and measuring tools, and debug and calibrate them to ensure normal operation and accuracy requirements. Step 2: Online measurement. Use measuring tools to detect corrosion, wear and deformation on the roller conveyor base mounting surface online, obtain accurate dimensional data, and select multiple points on the mounting surface for measurement to fully reflect the actual condition of the mounting surface and provide an accurate basis for subsequent processing plan formulation. Step 3: Machining Scheme Development. Based on the measurement data, combined with the design requirements and material properties of the mounting surface drawings, an online machining scheme is developed, including machining process, tool selection, and cutting parameters. The machining process is determined by the structural characteristics and machining difficulty of the roller conveyor frame, selecting an appropriate machining sequence and tool path. Tool selection is based on the hardness and cutting performance of the mounting surface material, choosing wear-resistant and sharp tools. Cutting parameters comprehensively consider tool life, machining efficiency, and the machining accuracy requirements of the mounting surface. Step 4: Positioning and adjusting the processing equipment. Hoist the processing equipment to the top of the roller conveyor base, and place the mounting base plate between the two roller conveyors, perpendicular to the rolling line direction and parallel to the conveyor rollers. The mounting base plate is fixed by welding to the roller conveyor fixing and support devices to ensure the stability and safety of the processing equipment during the processing. The processing equipment is installed at both ends of the mounting base plate. Step 5: Perform rough and fine adjustments on the machining equipment to ensure that the machining surface is parallel to the tool surface. Start the machining equipment and use the machining equipment at both ends of the mounting base plate to cut the mounting surfaces on the transmission side and the operating side. Use the unworn surface of the mounting surface as the machining reference and perform online cutting on the mounting surface according to the established machining plan. Monitor the dimensional changes and surface accuracy in real time during the machining process. Step 6: Quality Inspection. After the installation surface is processed, use measuring tools to inspect the precision of the processed parts, including the accuracy of the opening dimensions, surface roughness, levelness, and height on both sides. Compile and compare the measurement data, and if any accuracy problems are found, rework them in a timely manner until they meet the qualified standards. Step 7: Cleaning and Protection. Clean and re-thread the screw holes on the machined mounting surface, remove chips and oil, and take protective measures to prevent further wear and corrosion, thus completing the repair of the mounting surface.

[0006] Furthermore, the online machining equipment is a portable planar milling machine, which includes a universal boring head, an X-axis guide rail, a lead screw, an X-axis drive motor, a Y-axis guide rail, a Y-axis drive motor, and a Z-axis drive feed mechanism. The mounting base plate has rectangular notches at both ends. The X-axis guide rail is located on both sides of the rectangular notch. The lead screw is located in the center of the rectangular notch and is parallel to the X-axis guide rail. The X-axis drive motor is located at the bottom of the rectangular notch and drives the lead screw to rotate. The Y-axis guide rail is located at both ends of the X-axis guide rail and is connected to the end of the lead screw in the middle. The Z-axis drive feed mechanism is located on the Y-axis guide rail and is driven by the Y-axis drive motor to move along the Y-axis guide rail. The universal boring head is located at the bottom of the Z-axis drive feed mechanism and is driven by the boring and milling cutter head to move up and down along the Z-axis drive feed mechanism.

[0007] Furthermore, the horizontality of the X-axis guide rail is ≤0.05mm / m, and the verticality of the Z-axis drive feed mechanism is ≤0.05mm / m.

[0008] Furthermore, the mounting base plate's fixing and support devices can withstand the cutting and vibration forces during processing and avoid causing additional damage to the roller conveyor.

[0009] Furthermore, when the machining equipment performs online cutting on the mounting surface, the operating status of the machining equipment is closely monitored, the allowance is measured multiple times, the flatness and height are checked, and the cutting parameters are adjusted in a timely manner to ensure machining accuracy and progress.

[0010] The present invention employs the above-mentioned technical solution for the online processing method of the mounting surface of the roller conveyor base. Specifically, this method prepares online processing equipment and measuring tools, ensuring normal operation and accuracy requirements after debugging and calibration; it performs online inspection of the roller conveyor base mounting surface to obtain dimensional data, providing a basis for processing plan formulation; based on the measurement data, combined with the design requirements and material properties of the mounting surface drawings, an online processing plan is formulated; the processing equipment is positioned and adjusted using the mounting base plate, which is fixed by welding to the roller conveyor's fixing and support devices, and the processing equipment is installed at both ends of the mounting base plate; the processing equipment is started, and the mounting surfaces on the transmission and operating sides are machined using the processing equipment at both ends of the mounting base plate; the processed parts are precision inspected until they meet the qualification standards; after cleaning and protecting the mounting surface, the repair of the mounting surface is completed. This method overcomes the defects of traditional mounting surface repair operations, eliminating the need to disassemble the roller conveyor, improving repair efficiency while reducing disassembly and assembly costs, improving the repair accuracy of the mounting surface, and ensuring the smooth transport of rolled steel plates. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the processing equipment for the online processing method of the present invention. Detailed Implementation

[0012] The online processing method for the mounting surface of a rolling mill roller table base according to the present invention includes the following steps: Step 1: Prepare online processing equipment. Prepare all necessary online processing equipment and measuring tools, and debug and calibrate them to ensure normal operation and accuracy requirements. Step 2: Online measurement. Use measuring tools to detect corrosion, wear and deformation on the roller conveyor base mounting surface online, obtain accurate dimensional data, and select multiple points on the mounting surface for measurement to fully reflect the actual condition of the mounting surface and provide an accurate basis for subsequent processing plan formulation. Step 3: Machining Scheme Development. Based on the measurement data, combined with the design requirements and material properties of the mounting surface drawings, an online machining scheme is developed, including machining process, tool selection, and cutting parameters. The machining process is determined by the structural characteristics and machining difficulty of the roller conveyor frame, selecting an appropriate machining sequence and tool path. Tool selection is based on the hardness and cutting performance of the mounting surface material, choosing wear-resistant and sharp tools. Cutting parameters comprehensively consider tool life, machining efficiency, and the machining accuracy requirements of the mounting surface. Step 4: Positioning and adjusting the processing equipment. Hoist the processing equipment to the top of the roller conveyor base, and place the mounting base plate between the two roller conveyors, perpendicular to the rolling line direction and parallel to the conveyor rollers. The mounting base plate is fixed by welding to the roller conveyor fixing and support devices to ensure the stability and safety of the processing equipment during the processing. The processing equipment is installed at both ends of the mounting base plate. Step 5: Perform rough and fine adjustments on the machining equipment to ensure that the machining surface is parallel to the tool surface. Start the machining equipment and use the machining equipment at both ends of the mounting base plate to cut the mounting surfaces on the transmission side and the operating side. Use the unworn surface of the mounting surface as the machining reference and perform online cutting on the mounting surface according to the established machining plan. Monitor the dimensional changes and surface accuracy in real time during the machining process. Step 6: Quality Inspection. After the installation surface is processed, use measuring tools to inspect the precision of the processed parts, including the accuracy of the opening dimensions, surface roughness, levelness, and height on both sides. Compile and compare the measurement data, and if any accuracy problems are found, rework them in a timely manner until they meet the qualified standards. Step 7: Cleaning and Protection. Clean and re-thread the screw holes on the machined mounting surface, remove chips and oil, and take protective measures to prevent further wear and corrosion, thus completing the repair of the mounting surface.

[0013] Preferred, such as Figure 1 As shown, the online machining equipment is a portable surface milling machine, which includes a universal boring head 1, an X-axis guide rail 2, a lead screw 3, an X-axis drive motor 4, a Y-axis guide rail 5, a Y-axis drive motor 6, and a Z-axis drive feed mechanism 7. The mounting base plate 8 has rectangular notches at both ends. The X-axis guide rail 2 is located on both sides of the rectangular notch. The lead screw 3 is located in the center of the rectangular notch and is parallel to the X-axis guide rail 2. The X-axis drive motor 4 is located at the bottom of the rectangular notch and drives the lead screw 3 to rotate. The Y-axis guide rail 5 is located at both ends of the X-axis guide rail 2 and is connected to the end of the lead screw 3 in the middle. The Z-axis drive feed mechanism 7 is located on the Y-axis guide rail 5 and is driven by the Y-axis drive motor 6 to move along the Y-axis guide rail 5. The universal boring head 1 is located at the bottom of the Z-axis drive feed mechanism 7 and is driven by the boring and milling cutter head 9 to move up and down along the Z-axis drive feed mechanism 7.

[0014] Considering that the repair of the roller conveyor base mounting surface involves the repair of the base bottom surface and the opening dimensions of the two vertical surfaces, the design and manufacture of the processing equipment should be similar to the structure of the bottom milling machine, and use a universal boring head to achieve vertical surface processing. Thus, the mounting base plate acts as a support platform to ensure that the processing equipment does not vibrate during processing and avoids processing errors. The mounting base plate is designed as an "I" structure with rectangular notches at both ends to ensure that the universal boring head has sufficient processing space, and also to provide sufficient accuracy for the flatness of the base bottom surface and the height of the two mounting surfaces after processing.

[0015] Preferably, the horizontality of the X-axis guide rail is ≤0.05mm / m, and the verticality of the Z-axis drive feed mechanism is ≤0.05mm / m.

[0016] Preferably, the mounting base plate fixing and support device can withstand the cutting and vibration forces during the processing and avoid causing additional damage to the roller conveyor.

[0017] Preferably, when the machining equipment performs online cutting on the mounting surface, the operating status of the machining equipment should be closely monitored, the allowance should be measured multiple times, the flatness and height should be checked, and the cutting parameters should be adjusted in a timely manner to ensure machining accuracy and progress.

[0018] This method utilizes portable surface milling machines. During repair operations, two portable surface milling machines, positioned at both ends of the mounting base plate, respectively perform cutting machining on the mounting surfaces of the transmission and operating sides. Compared to the original offline repair method, this method employs a self-developed bottom surface milling machine. With the cooperation of the mounting base plate, it fully meets the machining requirements of the roller conveyor base mounting surface. Repairing the roller conveyor base mounting surface through online machining eliminates the need for disassembly and reassembly of the roller conveyor, significantly reducing disassembly and maintenance time and lowering maintenance costs. Simultaneously, the high machining accuracy of the portable surface milling machines, combined with machining tools based on the reference surface of the roller conveyor base mounting surface, ensures that the opening dimensions are entirely within the range required by the drawings. Furthermore, the flatness, roughness, and equal height of the two sides of the mounting surface meet design requirements, guaranteeing the installation accuracy requirements of subsequent rollers. This ensures that the subsequent roller conveyor transports steel plates smoothly without jumping or deviation, achieving stable steel plate transport.

[0019] This method uses online processing equipment for on-site cutting, eliminating the need to disassemble the roller conveyor frame. This improves repair efficiency while significantly reducing disassembly and assembly costs. It also allows for simultaneous processing of the roller conveyor frame base mounting surfaces on both the drive and operating sides, avoiding prolonged downtime of the rolling line. Furthermore, by using the unworn area as the processing reference and combining it with machine tool precision, this method ensures equal height and symmetry on both sides of the roller conveyor frame mounting surface, guaranteeing the installation accuracy of each roller. This prevents the rollers from jumping or deviating during steel plate transport, ensuring smooth steel plate delivery and overcoming the shortcomings of traditional repair methods.

Claims

1. An online machining method for the mounting surface of a rolling mill roller table base, characterized in that... Includes the following steps: Step 1: Prepare online processing equipment. Prepare all necessary online processing equipment and measuring tools, and debug and calibrate them to ensure normal operation and accuracy requirements. Step 2: Online measurement. Use measuring tools to detect corrosion, wear and deformation on the roller conveyor base mounting surface online, obtain accurate dimensional data, and select multiple points on the mounting surface for measurement to fully reflect the actual condition of the mounting surface and provide an accurate basis for subsequent processing plan formulation. Step 3: Machining Scheme Development. Based on the measurement data, combined with the design requirements and material properties of the mounting surface drawings, an online machining scheme is developed, including machining process, tool selection, and cutting parameters. The machining process is determined by the structural characteristics and machining difficulty of the roller conveyor frame, selecting an appropriate machining sequence and tool path. Tool selection is based on the hardness and cutting performance of the mounting surface material, choosing wear-resistant and sharp tools. Cutting parameters comprehensively consider tool life, machining efficiency, and the machining accuracy requirements of the mounting surface. Step 4: Positioning and adjusting the processing equipment. Hoist the processing equipment to the top of the roller conveyor base, and place the mounting base plate between the two roller conveyors, perpendicular to the rolling line direction and parallel to the conveyor rollers. The mounting base plate is fixed by welding to the roller conveyor fixing and support devices to ensure the stability and safety of the processing equipment during the processing. The processing equipment is installed at both ends of the mounting base plate. Step 5: Perform rough and fine adjustments on the machining equipment to ensure that the machining surface is parallel to the tool surface. Start the machining equipment and use the machining equipment at both ends of the mounting base plate to cut the mounting surfaces on the transmission side and the operating side. Use the unworn surface of the mounting surface as the machining reference and perform online cutting on the mounting surface according to the established machining plan. Monitor the dimensional changes and surface accuracy in real time during the machining process. Step 6: Quality Inspection. After the installation surface is processed, use measuring tools to inspect the precision of the processed parts, including the accuracy of the opening dimensions, surface roughness, levelness, and height on both sides. Compile and compare the measurement data, and if any accuracy problems are found, rework them in a timely manner until they meet the qualified standards. Step 7: Cleaning and Protection. Clean and re-thread the screw holes on the machined mounting surface, remove chips and oil, and take protective measures to prevent further wear and corrosion, thus completing the repair of the mounting surface.

2. The online processing method for the mounting surface of a rolling mill roller table base according to claim 1, characterized in that: The online machining equipment is a portable planar milling machine, which includes a universal boring head, an X-axis guide rail, a lead screw, an X-axis drive motor, a Y-axis guide rail, a Y-axis drive motor, and a Z-axis drive feed mechanism. The mounting base plate has rectangular notches at both ends. The X-axis guide rail is located on both sides of the rectangular notch. The lead screw is located in the center of the rectangular notch and is parallel to the X-axis guide rail. The X-axis drive motor is located at the bottom of the rectangular notch and drives the lead screw to rotate. The Y-axis guide rail is located at both ends of the X-axis guide rail and is connected to the end of the lead screw in the middle. The Z-axis drive feed mechanism is located on the Y-axis guide rail and is driven by the Y-axis drive motor to move along the Y-axis guide rail. The universal boring head is located at the bottom of the Z-axis drive feed mechanism and is driven by the boring and milling cutter head to move up and down along the Z-axis drive feed mechanism.

3. The online processing method for the mounting surface of the rolling mill roller table base according to claim 2, characterized in that: The horizontality of the X-axis guide rail is ≤0.05mm / m, and the verticality of the Z-axis drive feed mechanism is ≤0.05mm / m.

4. The online processing method for the mounting surface of a rolling mill roller table base according to claim 1 or 2, characterized in that: The mounting base plate's fixing and support devices can withstand the cutting and vibration forces during processing and avoid causing additional damage to the roller conveyor.

5. The online processing method for the mounting surface of a rolling mill roller table base according to claim 4, characterized in that: When the machining equipment performs online cutting on the mounting surface, closely monitor the operating status of the machining equipment, measure the allowance multiple times, check the flatness and height, and adjust the cutting parameters in a timely manner to ensure machining accuracy and progress.

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