A method and device for quickly measuring the unfolding radius of an abrasive cloth wheel by using a noise monitor

Abstract

The present invention discloses a method and device for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor. Based on the principle that a high-speed rotating abrasive wheel, when contacting a thin-walled part, forces the part to vibrate and emit high-decibel noise, the method uses a noise monitor to accurately and quickly measure the unfolded radius of the abrasive wheel. When contact between the abrasive wheel and the thin-walled part is detected, the relative position difference between the abrasive wheel's rotating shaft and the thin-walled part is the unfolded radius of the abrasive wheel at that rotational speed. The position of the thin-walled part along the Y-axis on the machine tool can be accurately measured, and the position of the rotating shaft along the Y-axis when the abrasive wheel contacts the thin-walled part can be read by the machine tool control system, thereby calculating the unfolded radius of the abrasive wheel. This method enables automatic and rapid determination of the unfolded radius of the abrasive wheel, with high measurement accuracy.

Description

Technical Field

[0001] The invention belongs to the technical field of precision parts polishing technology and relates to a method for quickly measuring the unfolded radius of an abrasive wheel by utilizing a noise monitor. Background Art

[0002] An abrasive wheel is made of abrasive belt cut into sheets and then fixed to a mandrel with a fixed adhesive. When the wheel rotates at high speed, the abrasive belt around the mandrel expands radially due to centrifugal force. The radius at this point is the expanded radius of the abrasive wheel at that speed. During operation, the high-speed rotation of the abrasive wheel causes elastic deformation due to compression, and the amount of elastic deformation directly affects the polishing quality. The compression of the abrasive wheel is the difference between the expanded radius and the distance from the rotation axis to the workpiece. The distance from the rotation axis to the workpiece is a parameter set during CNC programming. In engineering practice, the expanded radius of the abrasive wheel is mainly determined by calculating the distance from the rotation axis plane to the paint surface just enough for the rotating abrasive wheel to scrape off the paint. However, paint requires a certain amount of friction to be removed, and friction only occurs when compression is present. This often results in an underestimation of the expanded radius, leading to inaccurate measurements. Furthermore, repeated checks are required during the implementation process, and the accuracy of the measurement is heavily dependent on the operator's experience and skills. The inspection process is labor-intensive and subject to significant human influence. Summary of the Invention

[0003] In response to the problems existing in the prior art, the purpose of the present invention is to provide a method and device for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor, which can automatically and quickly measure the unfolded radius of the abrasive wheel, has high measurement accuracy, saves labor, and eliminates some interference factors.

[0004] The present invention is achieved through the following technical solutions:

[0005] A method for quickly measuring the expansion radius of an abrasive wheel using a noise monitor.

[0006] S1, measure the height difference between the upper surface of the thin-walled plate and the machine tool worktable, recorded as y A ;

[0007] S2, move the abrasive wheel so that it approaches the end of the upper surface of the thin-walled plate along the Y-axis direction of the machine tool. The abrasive wheel contacts the thin-walled plate surface, and friction produces noise;

[0008] S3, the noise generated by friction is monitored by the noise monitor. When the noise monitor shows a sudden change, the grinding wheel stops moving and the center coordinate distance y of the grinding wheel installation axis is recorded. B ;

[0009] S4, according to the height difference y between the upper surface of the thin-walled plate and the machine tool worktableA The center coordinate distance y from the abrasive wheel mounting axis B , calculate the expansion radius of the abrasive wheel; where the expansion radius of the abrasive wheel R ω =y B -y A .

[0010] Preferably, the height difference between the upper surface of the thin-walled flat plate and the working table of the machine tool is measured using a depth gauge.

[0011] Preferably, the center coordinate y of the abrasive wheel mounting axis is B It is read out by the machine control system.

[0012] A device for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor, comprising:

[0013] Noise monitors, thin-walled plates, abrasive wheels and machine tool tables;

[0014] The thin-walled plate is fixedly mounted on the machine tool workbench, the noise monitor is fixedly mounted on the machine tool workbench on a side close to the thin-walled plate, and the emery wheel is mounted close to the surface of the thin-walled plate;

[0015] Preferably, the thin-walled flat plate is horizontally parallel to the machine tool worktable.

[0016] Preferably, the distance between the noise monitor and the edge of one end of the thin-walled flat plate is 1-3 cm.

[0017] Preferably, the thin-walled flat plate is horizontally fixedly mounted on the machine tool workbench via a support frame.

[0018] Preferably, the support frame is fixed to the machine tool workbench by bolts.

[0019] Preferably, the support frame is a T-shaped structure.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] The present invention provides a method and apparatus for rapidly measuring the spread radius of an abrasive wheel using a noise monitor. Based on the principle that a high-speed rotating abrasive wheel, when contacting a thin-walled workpiece, causes the workpiece to vibrate and emit high-decibel noise, the method accurately and rapidly measures the spread radius of the abrasive wheel using a noise monitor. When contact between the abrasive wheel and the thin-walled workpiece is detected, the relative position difference between the abrasive wheel's rotating axis and the thin-walled workpiece is the spread radius of the abrasive wheel at that rotational speed. The position of the thin-walled workpiece along the Y-axis on the machine tool can be accurately measured, and the position of the abrasive wheel's rotating axis along the Y-axis when contacting the workpiece can be read by the machine tool control system, thereby calculating the spread radius of the abrasive wheel. This method enables automatic and rapid measurement of the spread radius of the abrasive wheel, resulting in highly accurate measurement results. The noise monitor accurately captures the moment of contact between the abrasive wheel and the thin plate, allowing for rapid measurement of the spread radius without the need for repeated observation and testing. Furthermore, the accuracy of the spread radius of the abrasive wheel is independent of the operator's experience and skill, saving labor and eliminating human influence, resulting in more accurate measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the device for measuring the unfolded radius of the abrasive wheel

[0023] In the figure: abrasive wheel 1, thin-walled plate 2, noise monitor 3, machine tool worktable 4, support frame 5, bolt 6. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to specific embodiments, which are intended to explain the present invention rather than to limit it.

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0026] The abrasive flap wheel is a cylindrical polishing tool made of a certain number of rectangular abrasive belt blades, which are rolled on a polypropylene core shaft at a certain angle through resin film. The abrasive flap wheel is flexible when rotated and unfolded, and can conform to complex surfaces to a certain extent.

[0027] A device for quickly measuring the unfolding radius of an abrasive wheel 1 using a noise monitor 3, comprising:

[0028] Noise monitor 3, thin-walled plate 2, emery wheel 1, machine tool worktable 4; the thin-walled plate 2 is fixedly mounted on the machine tool worktable 4, the side of the noise monitor close to the thin-walled plate 2 is fixedly mounted on the machine tool worktable 4, and the emery wheel 1 is installed close to the surface of the thin-walled plate 2;

[0029] The distance between the noise monitor and one end of the thin-walled plate 2 is 2 cm, which is convenient for effectively obtaining the noise generated by the friction between the grinding wheel 1 and the thin-walled plate 2 during rotation;

[0030] The thin-walled plate 2 and the machine tool workbench 4 are ensured to be horizontal and parallel to avoid inaccurate test results;

[0031] The thin-walled plate 2 is horizontally fixedly mounted on the machine tool worktable 4 via a support frame 5. The support frame 5 is fixed to the machine tool worktable 4 via bolts 6. The support frame 5 is a T-shaped structure; both sides of one end face of the support frame 5 are fixedly connected to the machine tool worktable 4 via bolts 6, and the other end of the support frame 5 is perpendicular to the machine tool worktable 4. The other end of the support frame 5 is used to support the thin-walled plate 2 and maintain a certain distance between the machine tool worktable 4;

[0032] A method for quickly measuring the unfolded radius of an abrasive wheel 1 using a noise monitor 3,

[0033] S1, measure the height difference between the upper surface of the thin-walled plate 2 and the four surfaces of the machine tool table, recorded as y A ;

[0034] S2, move the abrasive wheel 1 so that it approaches the end of the upper surface of the thin-walled plate 2 along the Y-axis direction of the machine tool. The abrasive wheel 1 contacts the thin-walled plate 2, and friction generates noise;

[0035] S3, use a noise monitor to monitor the noise generated by friction. When the noise monitor shows a sudden change, the grinding wheel 1 stops moving and the center coordinate y of the mounting axis of the grinding wheel 1 is recorded. B ;

[0036] S3, by calculating the expansion radius of the abrasive wheel 1, wherein the expansion radius R ω =y B -y A The height difference between the upper surface of the thin-walled plate 2 and the surface of the machine tool workbench 4 is measured using a depth gauge. The center coordinate y of the mounting axis of the abrasive wheel 1 is B It is read out by the machine tool control system; the center coordinate distance y of the installation axis of the abrasive wheel 1 B Take the machine tool as the coordinate axis, y B The distance between the center of the mounting axis of the abrasive wheel 1 and the X-axis of the machine tool;

[0037] Noise measurement instruments must be Type 2 or higher integrating average sound level meters or automatic environmental noise monitoring instruments. Their performance must comply with the requirements of GB 3785 and GB / T 17181 and be calibrated regularly. The deviation in the reading of the instrument must not exceed 0.5 dB using a sound calibrator before and after measurement; otherwise, the measurement will be invalid.

[0038] Example 1,

[0039] First, install the instrument. Figure 1 As shown, the thin-walled plate 2 is fixed on the machine tool so that the upper surface of the plate is level. At the same time, a noise monitor is fixed on the machine tool so that the distance from the plate is 2 cm.

[0040] Second, determine the position of the thin-walled plate 2 in the machine tool. Use a depth gauge to measure the height difference between the upper surface of the thin-walled plate 2 and the machine tool table 4, which is recorded as y A .

[0041] Third, identify the position of the abrasive wheel 1. Adjust the machine tool spindle so that it is parallel to the upper surface of the plate. Move the abrasive wheel 1 slowly along the Y-axis to the end of the upper surface of the thin-walled plate 2. The abrasive wheel 1 contacts the plate, and friction produces noise. When the noise monitor shows a sudden change, the machine tool stops and records the coordinate y of the rotary axis center at this time. B .

[0042] Fourth, calculate the expansion radius of the abrasive wheel 1. The expansion radius R of the abrasive wheel 1 ω =y B -y A .

[0043] The present invention is based on the principle that when a high-speed rotating abrasive wheel 1 contacts a thin-walled workpiece, it forces the thin-walled workpiece to vibrate and emit high-decibel noise. The noise monitor 3 is used to accurately and quickly measure the unfolding radius of the abrasive wheel 1. The principle is as follows: Figure 1 As shown. When it is detected that the emery wheel 1 is in contact with the thin-walled workpiece, the relative position difference between the rotating axis of the emery wheel 1 and the thin-walled workpiece is the unfolded radius of the emery wheel 1 at this rotation speed. Among them, the position of the thin-walled workpiece along the Y-axis on the machine tool can be accurately measured, and the position of the rotating axis along the Y-axis when the emery wheel 1 contacts the thin-walled workpiece can be read by the machine tool control system. Thus, the unfolded radius of the emery wheel 1 can be calculated. The unfolded radius of the emery wheel 1 can be automatically and quickly measured, and the measurement result is highly accurate. The present invention utilizes the noise monitor 3 to accurately capture the contact moment between the emery wheel 1 and the thin plate, and quickly measure the unfolded radius of the emery wheel 1 without the need for repeated observation and testing. Moreover, the accuracy of the unfolded radius of the emery wheel 1 does not depend on the experience and level of the operator, saving labor, eliminating human influence factors, and making the measurement result more accurate.

[0044] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A method for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor, characterized in that: S1, measure the height difference between the upper surface of the thin-walled plate (2) and the surface of the machine tool table (4), recorded as y A ; S2, moving the abrasive wheel (1) so that it approaches the end of the upper surface of the thin-walled plate (2) along the Y-axis direction of the machine tool, and the abrasive wheel (1) and the thin-walled plate (2) are in surface contact, and friction generates noise; S3, the noise generated by friction is monitored by the noise monitor (3). When the reading of the noise monitor changes suddenly, the grinding wheel (1) stops moving and the center coordinate distance of the mounting axis of the grinding wheel (1) is recorded. y B ; S4, based on the height difference between the upper surface of the thin-walled plate (2) and the surface of the machine tool worktable (4) y A The center coordinate distance of the mounting axis of the abrasive wheel (1) y B , calculate the expansion radius of the abrasive wheel (1); wherein, the expansion radius of the abrasive wheel (1) R ω = y B - y A .

2. The method for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor according to claim 1, characterized in that: The height difference between the upper surface of the thin-walled flat plate (2) and the surface of the machine tool worktable (4) is measured using a depth gauge.

3. The method for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor according to claim 1, characterized in that: The center coordinate of the mounting axis of the abrasive wheel (1) y B It is read out by the machine control system.

4. A device for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor, based on the method according to any one of claims 1 to 3, characterized in that: include, Noise monitor (3), thin-walled plate (2), abrasive wheel (1) and machine tool table (4); The thin-walled plate (2) is fixedly mounted on a machine tool workbench (4), the noise monitor (3) is fixedly mounted on the machine tool workbench (4) on a side close to the thin-walled plate (2), and the installation position of the abrasive wheel (1) is close to the surface of the thin-walled plate (2).

5. The device for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor according to claim 4, characterized in that: The thin-walled flat plate (2) is horizontally parallel to the machine tool worktable (4).

6. The device for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor according to claim 4, characterized in that: The distance between the noise monitor (3) and the edge of one end of the thin-walled flat plate (2) is 1-3 cm.

7. The device for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor according to claim 4, characterized in that: The thin-walled flat plate (2) is fixedly mounted horizontally on the machine tool workbench (4) via a support frame (5).

8. The device for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor according to claim 7, characterized in that: The support frame (5) is fixed on the machine tool workbench (4) via bolts (6).

9. The device for quickly measuring the unfolded radius of an abrasive wheel using a noise monitor according to claim 8, characterized in that: The support frame (5) is a T-shaped structure.

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