Method for detecting and adjusting "five-center coaxiality" of round steel peeling machine

Abstract

The present application relates to a kind of round steel peeling machine " five heart coaxiality " detection and adjustment method for the coaxiality of blank feeding roller, front guide, rotary cutter head, rear guide and clamping trolley five components of large-scale round steel peeling machine, install front and rear support sleeve, with the reference of front support sleeve, detect and adjust the coaxiality error of front guide and cutter head, install test bar, detect and adjust feeding roller, detect and adjust rear guide, detect and adjust trolley, avoid the quality problem of processing product caused by the large error of equipment " five heart coaxiality " error, through special tooling, support test bar, and test bar is in good stress state, clamping roller does not clamp test bar, which is beneficial to maintain the accuracy of test bar, and the detection and adjustment process is reasonable, and the detection and adjustment precision is high, and the efficiency is high.

Description

Technical Field

[0001] This invention belongs to the field of precision detection and adjustment technology for large-size round steel peeling machines. Specifically, it relates to a method for detecting and adjusting the coaxiality (hereinafter referred to as "five-center coaxiality") of five components of a large-size round steel peeling machine: the billet feeding roller, the front guide, the rotating cutter head, the rear guide, and the clamping trolley. Background Technology

[0002] A round steel stripping machine, also known as a "cyclone mill," uses a high-speed rotating cutting tool to peel away the surface material of steel bars. It is a highly efficient device for removing oxide scale and rust layers from steel surfaces, improving the surface quality and appearance of finished steel products. This differs from the working principle of a conventional lathe, where the workpiece rotates while the cutting tool remains stationary. The working principle of a round steel stripping machine is: the cutting tool rotates while the workpiece remains stationary. (See also...) Figure 1 (Schematic diagram of a round steel peeling machine). Its main components include: a feed roller assembly 1, a front guide assembly 2, a rotating cutter head 3 and a rear guide assembly 4, and a trolley assembly 5. The rotating cutter head assembly 3 is mounted on bearings inside the spindle box 6 and is driven by a motor, allowing it to rotate around its own axis. The rotating cutter head 3 has more than two symmetrically arranged cutting tools 7, allowing multiple tools to simultaneously cut and peel the workpiece surface material, improving cutting efficiency. The rotating cutter head assembly 3 and the rear guide assembly 4 are housed inside the spindle box 6. The two pairs of clamping rollers 8 on the feed roller assembly 1 can clamp the workpiece 15. Driven by a motor, the clamping rollers 8 can rotate in the direction shown in the diagram, enabling the workpiece 15 to be fed horizontally from left to right. The workpiece 15 only feeds axially and does not rotate. The clamping action of the clamping rollers 8 is synchronized by gears; that is, when the upper roller moves downward, the lower roller moves upward synchronously. The symmetrical center line of the upper and lower rollers (hereinafter referred to as the "center of feed roller 1") should be coaxial with the rotation center line of the rotating cutter head 3 (hereinafter referred to as the "center of cutter head 3"). The front guide component 2, rear guide component 4, and trolley component 5 constitute the guide components on the equipment. The function of the guide components is to support the workpiece, provide reliable guidance for the workpiece, maintain the smooth axial movement of the workpiece, and avoid and prevent the workpiece from vibrating and rotating. The clamping action of the upper and lower jaws 9 and 10 of the front guide component 2 is synchronously operated by a lever mechanism. When clamping the workpiece, the upper jaw 9 moves downward and the lower jaw 10 moves upward simultaneously. The center line of symmetry of the upper and lower jaws (hereinafter referred to as the "center of front guide 2") should be coaxial with the center line of the cutter head 3. The upper and lower jaws 11 and 12 of the rear guide component 4 and the upper and lower jaws 13 and 14 of the trolley component 5 have similar structures and functions to the front guide component 2, and the center lines of symmetry of their upper and lower jaws (hereinafter referred to as the "center of rear guide 4" and "center of trolley 5," respectively) should also be coaxial with the center of the cutter head 3.

[0003] As mentioned above, to ensure the machining quality of the workpiece, the coaxiality ("five-center coaxiality") of the centers of the cutter head 3, feed roller 1, front guide 2, rear guide 4, and trolley 5 must be inspected and adjusted to a certain precision. Otherwise, defects such as steps and tool marks will appear on the workpiece surface, affecting product quality and even making delivery impossible. The traditional "five-center coaxiality" inspection and adjustment scheme is as follows: Install the inspection bar 16—inspect the coaxiality error between feed roller 1 and cutter head 3—remove the inspection bar 16—adjust the coaxiality between feed roller 1 and cutter head 3—install the inspection bar 16—inspect and adjust front guide 2—inspect and adjust rear guide 4—inspect and adjust rear trolley 5. For details, see: Figure 2 (Diagram of traditional testing and adjustment scheme):

[0004] 1. Prepare a test bar 16 (a steel bar with high straightness and surface smoothness).

[0005] 2. Two pairs of clamping rollers 8 hold the test bar 16. At this time, the center of the test bar 16 is the center of the feed roller 1, and subsequent steps will use the test bar 16 as the detection reference. The length of the test bar 16 should be greater than the distance from the left pair of feed rollers to the pulley.

[0006] 3. Check the coaxiality between the center of the cutter head 3 and the test bar 16: Attract the magnetic dial indicator 18 to the rotating cutter head 3, with the indicator head hitting the test bar. The dial indicator 18 rotates 360° with the rotating cutter head. Determine the magnitude and direction of the coaxiality error based on the dial indicator reading.

[0007] 4. Remove the test bar 16. Adjust the thickness of the shim 17 at the bottom of the feed roller assembly 1 according to the magnitude and direction of the error, so that the center of the cutter head 3 is coaxial with the test bar 16. That is, the center of the cutter head 3 is coaxial with the center of the feed roller 1.

[0008] 5. Re-clamp the test bar 16 with two pairs of clamping rollers 8.

[0009] 6. Check the coaxiality between the center of the front guide 2 and the mandrel 16: Measure the distances A and B between the upper and lower jaws 9 and 10 of the front guide component 2 and the mandrel. Based on the values ​​of A and B, adjust the thickness of the bottom shim 19 of the lower jaw 10 to make the center of the front guide 2 coaxial with the mandrel 16.

[0010] 7. The method for checking and adjusting the coaxiality of the rear guide 4 center and the test bar 16 is similar to step 6 above: adjust the thickness of the bottom pad 20 of the bottom of the lower jaw 12 according to the measured values ​​C and D.

[0011] 8. The method for checking and adjusting the coaxiality of the center of the pulley 5 and the test bar 16 is similar to step 6 above: adjust the thickness of the bottom pad 21 of the bottom of the lower jaw 14 according to the measured values ​​E and F.

[0012] The shortcomings of the traditional "five-center coaxial" testing and adjustment scheme: See [link / reference] Figure 2 (Diagram of traditional testing and adjustment scheme)

[0013] When the two pairs of clamping rollers 8 hold one end of the test bar 16, the clamping lever arm "L" is short, and the test bar is equivalent to a cantilever beam, resulting in poor force distribution and a tendency for the other end of the test bar to sag. The adjustment accuracy is greatly affected by the weight of the test bar itself. The test bars used in large-scale peeling machines are large in length, diameter, and weight, and the impact on adjustment accuracy is particularly unfavorable when the test bar is in a cantilever state.

[0014] Traditional testing methods require clamping the test bar 16 twice, resulting in repeated clamping. Furthermore, the clamping roller 8 makes point contact with the test bar 16, and its textured surface (to increase friction) damages the test bar's surface when clamping it, compromising its accuracy. The combined errors from repeated clamping and test bar damage severely impact the accuracy of "five-center coaxial" testing. Repeated clamping also reduces efficiency. During testing, the dial indicator 18 needs to be mounted on the rotating cutter head 3, rotating with it. During the dial indicator's indexing process, when the indicator is positioned on either side of the test bar, the operator's view is obstructed by the test bar 16, making readings difficult and further reducing testing efficiency. Summary of the Invention

[0015] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an efficient and high-precision method for detecting and adjusting the five-center coaxiality of a large-size round steel peeling machine, thereby avoiding product quality problems caused by large errors in the five-center coaxiality of the equipment.

[0016] The technical solution of this invention is implemented as follows:

[0017] A method for detecting and adjusting the "five-center coaxiality" of a large-size round steel peeling machine. The specific detection and adjustment process is as follows:

[0018] Step 1) Check and adjust the coaxiality between the center of the front guide and the center of the cutter head: The upper and lower jaws of the front guide component clamp the front support sleeve. At this time, the center of the support sleeve is the center of the front guide. Check the coaxiality between the center of the front support sleeve and the center of the cutter head using a dial indicator: Attach a magnetic dial indicator to the cutter head, with the indicator head touching the inner hole of the front support sleeve. The magnetic dial indicator rotates 360° with the rotating cutter head. Determine the coaxiality error and its direction based on the dial indicator reading. Adjust the thickness of the front guide shim at the bottom of the lower jaw of the front guide accordingly, so that the center of the front support sleeve is coaxial with the center of the cutter head 3, that is, the center of the front guide is coaxial with the center of the cutter head. No verification bar needs to be installed when performing this step. After the test and adjustment are completed, the front support sleeve is still installed on the front guide component and is in a clamped state.

[0019] Step 2) Install the rear support sleeve on the housing hole at the right end of the spindle box;

[0020] Step 3) Insert the test bar into the front support sleeve and the rear support sleeve; at this time, the center of the test bar is the common center of the front guide and the cutter head;

[0021] Step 4) Check and adjust the coaxiality between the center of the feed roller and the center of the test bar: Using the test bar as a reference, check the coaxiality between the center of the feed roller and the test bar: Check the distances G and H between the test bar and the upper and lower clamping rollers of the feed roller; Based on the values ​​of G and H, adjust the thickness of the feed roller shim at the bottom of the feed roller to make the center of the feed roller coaxial with the center of the test bar.

[0022] Step 5) Check the coaxiality between the center of the rear guide and the center of the test bar: The method for checking and adjusting the coaxiality between the center of the rear guide and the center of the test bar is similar to Step 4 above. According to the measured values ​​C and D, adjust the thickness of the rear guide pad at the bottom of the lower jaw of the rear guide.

[0023] Step 6) Check and adjust the coaxiality between the center of the pulley and the center of the test bar: The method for checking and adjusting the coaxiality between the center of the pulley and the center of the test bar is the same as in Step 4) above. Adjust the thickness of the pulley pad at the bottom of the lower jaw of the pulley according to the measured values ​​E and F.

[0024] The positive effects of this invention are as follows:

[0025] 1. This solution uses the front support sleeve 22 as a transitional reference for detecting the coaxiality between the center of the front guide 2 and the center of the cutter head 3, which helps improve detection efficiency and accuracy. At the same time, it avoids the situation in traditional solutions where the operator's view is blocked by the test bar, resulting in efficient and accurate readings.

[0026] 2. This solution adopts a more reasonable support method for the test bar compared to traditional technical solutions: using specialized tooling, the test bar 16 is supported, making it a simply supported beam. This results in a better stress state for the test bar 16, higher testing accuracy, and higher adjustment efficiency.

[0027] 3. This solution does not use clamping roller 8 to hold (contact) the test bar, and it also avoids the repeated clamping issues found in traditional solutions, which helps maintain the accuracy of the test bar and improves the precision of detection and adjustment. Furthermore, due to the use of front and rear support sleeves 22 and 23, the test bar 16 can be made lighter (compared to...). Figure 2 and Figure 6 As can be seen, this is beneficial for improving the efficiency and accuracy of detection and adjustment.

[0028] 4. This solution first checks and adjusts the center of the front guide 2 to be coaxial with the center of the disc 3, then installs the inspection bar, and uniformly completes the detection and adjustment of the centers of the feed roller 1, rear guide 4, and pulley 5, which is highly efficient.

[0029] 5. The special tooling in this solution includes: front support sleeve 22, rear support sleeve 23, and inspection bar 16. See the diagram for the structure of the front support sleeve 22. Figure 3 The inner hole of the front support sleeve 22 has precision requirements for its fit with the test bar 16, and the inner hole and outer circle have coaxiality requirements. See the rear support sleeve for details. Figure 4 The inner hole of the rear support sleeve 23 has a precision requirement for fitting with the test bar 16, the inner hole has a coaxiality requirement for the outer circle, and the outer circle has a precision requirement for fitting with the box hole on the right side of the spindle box 6.

[0030] 6. Specific testing and adjustment process route for this plan: Before adjustment, check the coaxiality of the center of guide 2 and the center of cutter head 3: See [link / reference] Figure 5 The upper jaws 9 and 10 of the front guide component 2 clamp the front support sleeve 22, at which point the center of the support sleeve 22 is the center of the front guide 2. A dial indicator is used to check the coaxiality between the center of the front support sleeve 22 and the center of the cutter head 3: a magnetic dial indicator 18 is attracted to the rotating cutter head 3, with the indicator head punching through the inner hole of the front support sleeve. The dial indicator rotates 360° with the rotating cutter head. Based on the dial indicator reading, the coaxiality error and its direction are determined, and the thickness of the shim 19 at the bottom of the lower jaw pad 10 of the front guide 2 is adjusted accordingly to ensure the coaxiality between the center of the front support sleeve 22 and the center of the cutter head 3. This means the center of the front guide 2 and the center of the cutter head 3 are coaxial. This step does not require the installation of a verification bar; as the dial indicator rotates with the cutter head, the operator's view is not obstructed by the verification bar, as is the case in traditional methods, resulting in efficient and accurate readings. After testing and adjustment, the front support sleeve 22 is still installed on the front guide component 2, in a clamped state.

[0031] 7. See also Figure 5 Install the rear support sleeve 23 on the housing hole at the right end of the spindle box 6. See also Figure 6 Insert the test bar 16 into the holes of the front and rear support sleeves. At this time, the center of the test bar 16 is the common center of the front guide 2 and the cutter head 3. Check and adjust the coaxiality between the center of the feed roller 1 and the test bar 16: See [link to relevant documentation]. Figure 6 Using the test bar 16 as a reference, check the coaxiality between the center of the feed roller 1 and the test bar 16: check the distances G and H between the test bar 16 and the upper and lower clamping rollers 8. Based on the values ​​of G and H, adjust the thickness of the shim 17 at the bottom of the feed roller assembly 1 to make the center of the feed roller 1 coaxial with the test bar 16. Check the coaxiality between the center of the guide 4 and the test bar 16 after adjustment: see [link to relevant documentation] Figure 6 The method for checking and adjusting the coaxiality of the rear guide 4 center and the test bar 16 is similar to step 4 above. Adjust the thickness of the bottom shim 20 of the lower jaw 12 according to the measured values ​​C and D. Check and adjust the coaxiality of the pulley 5 center and the test bar 16 center: See [link to relevant documentation]. Figure 6 The method for checking and adjusting the coaxiality of the center of the pulley 5 and the test bar 16 is similar to step 4 above. Based on the measured values ​​E and F, adjust the thickness of the bottom pad 21 at the bottom of the lower jaw 14.

[0032] 8. The testing and adjustment process route is as follows: (See attached) Figure 6 Install front and rear support sleeves 22—Based on the front support sleeve 22, check and adjust the coaxiality error between the front guide 2 and the cutter head 3—Install the inspection bar 16—Check and adjust the feed roller 1—Check and adjust the rear guide 4—Check and adjust the pulley 5. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of a round steel peeling machine.

[0034] Figure 2 This is a schematic diagram of the traditional "five-center coaxiality" detection and adjustment scheme for round steel peeling machines.

[0035] Figure 3 This is a set of supporting diagrams.

[0036] Figure 4 This is a set of supporting diagrams.

[0037] Figure 5 This is a schematic diagram of the installation position of the special tooling for the "Method for Detecting and Adjusting the 'Five Centers Coaxiality' of a Large-Size Round Steel Peeling Machine" of the present invention.

[0038] Figure 6 This is a schematic diagram of the detection and adjustment scheme for the "method for detecting and adjusting the 'five-center coaxiality' of a large-size round steel peeling machine" of the present invention. Detailed Implementation

[0039] A method for detecting and adjusting the "five-center coaxiality" of a large-size round steel peeling machine. The specific detection and adjustment process is as follows:

[0040] Step 1) Check and adjust the coaxiality between the center of the front guide 2 and the center of the cutter head 3: The upper jaw 9 and lower jaw 10 of the front guide component 2 clamp the front support sleeve 22. At this time, the center of the support sleeve 22 is the center of the front guide 2. Check the coaxiality between the center of the front support sleeve 22 and the center of the cutter head 3 using a dial indicator: Attach a magnetic dial indicator 18 to the cutter head 3. The dial indicator 18 is placed on the inner hole of the front support sleeve 22. The magnetic dial indicator 18 rotates 360° with the rotating cutter head 3. Determine the coaxiality error and the direction of the error based on the dial indicator reading. Adjust the thickness of the front guide shim 19 placed at the bottom of the lower jaw 10 of the front guide 2 accordingly, so that the center of the front support sleeve 22 is coaxial with the center of the cutter head 3. That is, the center of the front guide 2 is coaxial with the center of the cutter head 3. No test bar needs to be installed when performing this step. After the test and adjustment are completed, the front support sleeve 22 is still installed on the front guide component 2 and is in a clamped state.

[0041] Step 2) Install the rear support sleeve 23 on the housing hole at the right end of the spindle box 6;

[0042] Step 3) Insert the test bar 16 into the front support sleeve 22 and the rear support sleeve 23; at this time, the center of the test bar 16 is the common center of the front guide 2 and the cutter head 3;

[0043] Step 4) Check and adjust the coaxiality between the center of the feed roller 1 and the center of the test bar 16: Using the test bar 16 as a reference, check the coaxiality between the center of the feed roller 1 and the test bar 16: Check the distances G and H between the test bar 16 and the upper and lower clamping rollers 8 of the feed roller; Based on the values ​​of G and H, adjust the thickness of the feed roller shim 17 at the bottom of the feed roller 1 so that the center of the feed roller 1 is coaxial with the center of the test bar 16.

[0044] Step 5) Check the coaxiality between the center of the rear guide 4 and the center of the test bar 16: The method for checking and adjusting the coaxiality between the center of the rear guide 4 and the center of the test bar 16 is similar to step 4 above. Adjust the thickness of the rear guide pad 20 at the bottom of the rear guide lower jaw 12 according to the measured values ​​C and D.

[0045] Step 6) Check and adjust the coaxiality between the center of the pulley 5 and the center of the test bar 16: The method for checking and adjusting the coaxiality between the center of the pulley 5 and the center of the test bar 16 is the same as in Step 4) above. Adjust the thickness of the pulley pad 21 at the bottom of the lower jaw 14 of the pulley according to the measured values ​​E and F.

Claims

1. A method for detecting and adjusting the "five-center coaxiality" of a large-size round steel peeling machine, characterized in that: The specific testing and adjustment process is as follows: Step 1) Check the coaxiality between the center of the front guide (2) and the center of the cutter head (3): The upper jaw (9) and lower jaw (10) of the front guide component (2) clamp the front support sleeve (22). At this time, the center of the support sleeve (22) is the center of the front guide (2). Check the coaxiality between the center of the front support sleeve (22) and the center of the cutter head (3) using a dial indicator: Attach a magnetic dial indicator (18) to the cutter head (3). The dial indicator (18) is placed on the inner hole of the front support sleeve (22). As the rotating cutter head (3) rotates 360°, the coaxiality error and its direction are determined based on the dial indicator reading. The thickness of the front guide pad (19) at the bottom of the lower jaw (10) of the front guide (2) is adjusted accordingly so that the center of the front support sleeve (22) is coaxial with the center of the cutter head 3, that is, the center of the front guide (2) is coaxial with the center of the cutter head (3). When implementing this step, there is no need to install a test bar. After the test and adjustment are completed, the front support sleeve (22) is still installed on the front guide component (2) and is in a clamped state. Step 2) Install the rear support sleeve (23) on the housing hole at the right end of the spindle box (6); Step 3) Insert the test bar (16) into the front support sleeve (22) and the rear support sleeve (23); at this time, the center of the test bar (16) is the common center of the front guide (2) and the cutter head (3); Step 4) Check and adjust the coaxiality between the center of the feed roller (1) and the center of the test bar (16): Using the test bar (16) as a reference, check the coaxiality between the center of the feed roller (1) and the test bar (16): Check the distance G and H between the test bar (16) and the upper and lower clamping rollers (8) of the feed roller; Based on the values ​​of G and H, adjust the thickness of the feed roller pad (17) at the bottom of the feed roller (1) so that the center of the feed roller (1) is coaxial with the center of the test bar (16); Step 5) Check the coaxiality between the center of the rear guide (4) and the center of the test bar (16): The method for checking and adjusting the coaxiality between the center of the rear guide (4) and the center of the test bar (16) is the same as in Step 4) above. Adjust the thickness of the rear guide pad (20) at the bottom of the rear guide lower jaw (12) according to the measured values ​​C and D. Step 6) Check and adjust the coaxiality between the center of the pulley (5) and the center of the test bar (16): The method for checking and adjusting the coaxiality between the center of the pulley (5) and the center of the test bar (16) is the same as in Step 4) above. According to the measured values ​​E and F, adjust the thickness of the pulley pad (21) at the bottom of the lower jaw (14) of the pulley.

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