Movable taper hole grinding machine

Abstract

The invention relates to the technical field of machine tool machining equipment, in particular to a movable taper hole grinding machine which comprises a grinding mechanism which is arranged on the upper portion of a longitudinal feeding mechanism and comprises a spindle box, a spindle arranged at one end of the spindle box and used for bearing a grinding wheel and the grinding wheel arranged at one end of the spindle and used for machining a taper hole. The sound sensor is arranged on one side of the spindle box and used for detecting sound data, and the image collecting device is arranged at the end of the spindle box and used for collecting a grinding wheel surface image. The control mechanism comprises a data analysis module, an image analysis module used for analyzing the abrasive particle distribution uniformity of the surface image of the grinding wheel to determine the abrasion degree of the grinding wheel, and a control module used for reducing the feeding speed of the grinding wheel or determining the abrasion degree of the grinding wheel based on the correlation condition of sound intensity and abrasive particle distribution density; and the parameter adjusting module is used for determining a parameter adjusting module for increasing the machining spacing according to the absolute value of the relative difference between the distribution density evaluation value and a preset distribution density evaluation value. The machining efficiency of the taper hole grinding machine on taper holes is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tool processing equipment, and particularly relates to a movable taper hole grinding machine. Background Art

[0002] As a key component in many mechanical devices, the machining accuracy and surface quality of the taper hole directly affect the overall performance and service life of the device. The core function of the taper hole grinding machine is to perform precision grinding on the taper holes of workpieces made of various metal and non-metal materials. Based on grinding technology and mechanical structure design, through the relative movement between the high-precision grinding wheel and the workpiece, the micro-removal of the taper hole surface is achieved, so as to improve the surface roughness, dimensional accuracy and shape accuracy.

[0003] Chinese Patent Application Publication No.: CN107186559A discloses a high-precision numerically controlled internal hole taper surface machining grinding machine, including: a clamping device, a first longitudinal feed device, a grinding wheel device, a third slope feed device and a second transverse feed device; the clamping device is arranged on the first longitudinal feed device; the workpiece to be machined is arranged on the clamping device; the third slope feed device is arranged on the second transverse feed device, and the feed axes of the third slope feed device and the second transverse feed device form an angle; the grinding wheel device is arranged on the third slope feed device, and the grinding wheel device faces the workpiece to be machined. However, the following problems exist in the prior art: Although the prior art is equipped with a complete processing system including a clamping device, a first longitudinal feed device, a grinding wheel device, a third slope feed device and a second transverse feed device for the taper hole grinding machine, the monitoring and compensation of the grinding wheel wear situation are lacking, resulting in low quality of the taper holes machined by the taper hole grinding machine, and thus the problem of low processing efficiency of the taper hole grinding machine. Summary of the Invention

[0004] Therefore, the present invention provides a movable taper hole grinding machine to overcome the problems in the prior art that the lack of monitoring and compensation for the grinding wheel wear situation leads to low quality of the taper holes machined by the taper hole grinding machine, and thus low processing efficiency of the taper hole grinding machine.

[0005] To achieve the above object, the present invention provides a movable taper hole grinding machine, including: a transverse feed mechanism, a longitudinal feed mechanism, and a grinding mechanism, which is arranged on the upper part of the longitudinal feed mechanism and includes a spindle box, a spindle arranged at one end of the spindle box for carrying the grinding wheel, and a grinding wheel arranged at one end of the spindle for machining the taper hole; a detection mechanism, which includes a sound sensor arranged on one side of the spindle box for detecting the sound data during the grinding process of the grinding wheel, and an image acquisition device arranged at the end of the spindle box for collecting the surface image of the grinding wheel; A control mechanism, which is respectively connected to a transverse feed mechanism, a longitudinal feed mechanism, a grinding mechanism and a detection mechanism, includes a data analysis module for analyzing the sound fluctuations during the grinding process of the grinding wheel, an image analysis module for analyzing the uniformity of abrasive grain distribution on the surface of the grinding wheel to determine the wear degree of the grinding wheel, and a parameter adjustment module for reducing the feed speed of the grinding wheel based on the uniformity of abrasive grain distribution, or for determining to increase the machining spacing according to the absolute value of the relative difference between the distribution density evaluation value and the preset distribution density evaluation value based on the correlation condition between the sound intensity and the abrasive grain distribution density.

[0006] Further, it also includes a column and a rotary mechanism. The rotary mechanism is arranged on the transverse feed mechanism and includes a rotary seat and a rotary shaft arranged at the top of the rotary seat for driving the grinding mechanism to rotate.

[0007] Further, the transverse feed mechanism includes a transverse body arranged on the upper part of the column, a transverse tool rest arranged on the transverse body for transverse feed, and a transverse apron box arranged at one end of the transverse tool rest away from the column for driving the transverse tool rest to reciprocate.

[0008] Further, the longitudinal feed mechanism includes a longitudinal body arranged at the top of the rotary seat, a longitudinal tool rest arranged on the longitudinal body for longitudinal feed, and a longitudinal apron box arranged at one end of the longitudinal tool rest for driving the longitudinal tool rest to reciprocate.

[0009] Further, the control mechanism also includes a data acquisition module. The data acquisition module is used to acquire the sound data of the sound sensor and the surface image of the grinding wheel of the image acquisition device. When the data analysis module determines the condition for acquiring the sound data, it determines that the sound fluctuation during the grinding process of the grinding wheel is within a reasonable range based on the comparison result that the sound fluctuation characterization parameter obtained from the sound data is less than or equal to the preset sound fluctuation characterization parameter; The image analysis module determines that the wear degree of the grinding wheel is unqualified based on the comparison result that the uniformity of abrasive grain distribution on the surface image of the grinding wheel when the sound fluctuation is within a reasonable range is greater than the preset uniformity of abrasive grain distribution.

[0010] Further, when the parameter adjustment module determines that the wear degree of the grinding wheel is unqualified, it determines to reduce the feed speed of the grinding wheel with a first preset feed speed adjustment coefficient based on the comparison result that the difference between the uniformity of abrasive grain distribution and the preset uniformity of abrasive grain distribution is less than or equal to the preset difference, or determines to reduce the feed speed of the grinding wheel with a second preset feed speed adjustment coefficient based on the comparison result that the difference between the uniformity of abrasive grain distribution and the preset uniformity of abrasive grain distribution is greater than the preset difference.

[0011] Further, when the data analysis module determines the condition for obtaining sound data, it determines that the sound fluctuation during the grinding process of the grinding wheel is not within a reasonable range based on the comparison result that the sound fluctuation characterization parameter obtained from the sound data is greater than the preset sound fluctuation characterization parameter; The image analysis module determines that the sound intensity with the sound fluctuation not within a reasonable range is positively correlated with the abrasive grain distribution density according to the comparison result that the distribution density evaluation value of the grinding wheel surface image is less than or equal to the preset distribution density evaluation value, or determines that the sound intensity with the sound fluctuation not within a reasonable range is negatively correlated with the abrasive grain distribution density according to the comparison result that the distribution density evaluation value of the grinding wheel surface image is greater than the preset distribution density evaluation value.

[0012] Further, when the parameter adjustment module determines the correlation between the sound intensity with the sound fluctuation not within a reasonable range and the abrasive grain distribution density, it determines to increase the machining distance with a first preset distance adjustment coefficient based on the comparison result that the absolute value of the relative difference between the distribution density evaluation value and the preset distribution density evaluation value is less than or equal to the preset absolute value of the relative difference, or determines to increase the machining distance with a second preset distance adjustment coefficient based on the comparison result that the absolute value of the relative difference between the distribution density evaluation value and the preset distribution density evaluation value is greater than the preset absolute value of the relative difference.

[0013] Further, the control mechanism further includes a data processing module. When the data processing module determines the adjustment method, it determines that the machining of the tapered hole is unqualified based on the comparison result that the surface roughness of the tapered hole is greater than the preset surface roughness.

[0014] Further, the control mechanism further includes a data optimization module. When the data optimization module determines that the machining of the tapered hole is unqualified, it determines to increase the grinding wheel speed with a preset grinding wheel speed adjustment coefficient based on the comparison result that the ratio of the surface roughness to the preset surface roughness is less than or equal to the preset ratio, or determines to increase the grinding wheel linear speed with a preset grinding wheel linear speed adjustment coefficient based on the comparison result that the ratio of the surface roughness to the preset surface roughness is greater than the preset ratio.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By collecting sound data and grinding wheel surface images, the data analysis module evaluates the rationality of sound fluctuations, the image analysis module judges the grinding wheel wear and the relationship between sound and abrasive grain distribution, the parameter adjustment module adjusts the feed speed or machining distance accordingly, the data processing module determines the machining quality of the tapered hole, and the data optimization module optimizes the grinding wheel speed or grinding wheel linear speed for unqualified situations, realizing the monitoring and adjustment of the grinding process. Through precise data analysis and processing, the accuracy and efficiency of tapered hole machining are improved.

[0016] Furthermore, the present invention determines whether the sound fluctuation during the grinding process of the grinding wheel is within a reasonable range by comparing the sound fluctuation characterization parameter with the preset sound fluctuation characterization parameter, monitors the sound fluctuation during the grinding of the grinding wheel, discovers potential grinding problems, and improves the accuracy and efficiency of the tapered hole machining.

[0017] Furthermore, the present invention evaluates the qualification of the grinding wheel wear degree. When it is unqualified, it adjusts the feed speed of the grinding wheel according to the difference between the abrasive grain distribution uniformity and the preset abrasive grain distribution uniformity, accurately determines the wear state of the grinding wheel, and adjusts the feed speed according to the wear degree to ensure the machining quality and efficiency.

[0018] Furthermore, the present invention evaluates the correlation between the abrasive grain distribution density on the surface of the grinding wheel and the sound intensity when the sound fluctuation is not within a reasonable range, calculates the distribution density evaluation value, compares it with the preset density evaluation value, and determines to increase the machining distance between the grinding wheel and the tapered hole by comparing the absolute value of the relative difference between the distribution density evaluation value and the preset density evaluation value, accurately adjusts the machining distance, optimizes the grinding process, and reduces the machining error caused by uneven abrasive grain distribution or excessive wear.

[0019] Furthermore, the present invention determines the qualification of the tapered hole machining by comparing the surface roughness of the tapered hole with the preset surface roughness. If it is unqualified, it optimizes the grinding wheel machining process, reduces the roughness of the tapered hole surface, and thus improves the accuracy and surface quality of the tapered hole machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the movable tapered hole grinding machine according to the embodiment of the present invention; Figure 2 It is a left view structural schematic diagram of the movable tapered hole grinding machine according to the embodiment of the present invention; Figure 3 It is a structural schematic diagram of the control mechanism according to the embodiment of the present invention; Figure 4 It is a flow chart for determining the qualification of the grinding wheel wear degree according to the embodiment of the present invention; In the figure, 1, column; 201, transverse body; 202, transverse tool rest; 203, transverse carriage; 301, slewing base; 302, slewing shaft; 401, longitudinal body; 402, longitudinal tool rest; 403, longitudinal carriage; 501, support base; 502, main shaft; 503, grinding wheel; 6, drive motor; 701, sound sensor; 702, image acquisition device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the purpose and advantages of the present invention clearer, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0023] It should be noted that the data in this embodiment are obtained through comprehensive analysis and evaluation of the historical detection data and corresponding historical detection results of the present invention in the three months before this detection. Those skilled in the art can understand that the determination method of the above single parameter of the present invention can be to select the value with the highest proportion according to the data distribution as the preset standard parameter, use weighted summation to obtain the value as the preset standard parameter, substitute each historical data into a specific formula and use the value obtained by this formula as the preset standard parameter or other selection methods, as long as it meets the requirement that the present invention can clearly define different specific situations in the single determination process through the obtained values.

[0024] Please refer to Figure 1 - Figure 4 as shown in Figure 1 the front view structural schematic diagram of the movable taper hole grinding machine according to the embodiment of the present invention; Figure 2 the left view structural schematic diagram of the movable taper hole grinding machine according to the embodiment of the present invention; Figure 3 the structural schematic diagram of the control mechanism according to the embodiment of the present invention; Figure 4 the flowchart for determining the qualification of the grinding wheel wear degree according to the embodiment of the present invention.

[0025] The embodiment of the present invention is used for a movable taper hole grinding machine, including: a column 1, a transverse feed mechanism, which includes a transverse body 201 arranged on the upper part of the column 1, a transverse tool rest 202 arranged on the transverse body 201 for transverse feed, and a transverse apron 203 arranged at one end of the transverse tool rest 202 for driving the transverse tool rest 202 to reciprocate; a rotary mechanism, which includes a rotary base 301 arranged in the middle of the transverse body 201, and a rotary shaft 302 arranged at the top of the rotary base 301 for driving the grinding mechanism to rotate; a longitudinal feed mechanism, which includes a longitudinal body 401 arranged at the top of the rotary base 301, a longitudinal tool rest 402 arranged on the longitudinal body 401 for longitudinal feed, and a longitudinal apron 403 arranged at one end of the longitudinal tool rest 402 for driving the longitudinal tool rest 402 to reciprocate; Grinding mechanism, which includes a support base 501 arranged on the upper part of the longitudinal body 401, a headstock 502 arranged at the top of the support base 501 for driving the main shaft 503 to rotate, a main shaft 503 arranged at one end of the headstock 502 for carrying a grinding wheel 504, and a grinding wheel 504 arranged at one end of the main shaft 503 for machining a tapered hole; A driving motor 6, which is arranged at the top of the headstock 502 for driving the grinding wheel 504 to rotate; Detection mechanism, which includes a sound sensor 701 arranged on one side of the headstock 502 for detecting sound data during the grinding process of the grinding wheel 504, and an image acquisition device 702 arranged at the end of the headstock 502 for acquiring an image of the grinding wheel surface; Control mechanism, which is respectively connected to the transverse feed mechanism, the longitudinal feed mechanism, the grinding mechanism and the detection mechanism, including, A data acquisition module, which is used to acquire the sound data of the sound sensor and the image of the grinding wheel surface of the image acquisition device; A data analysis module, which is connected to the data acquisition module, and is used to determine whether the sound fluctuation of the grinding wheel during the grinding process is within a reasonable range based on the sound fluctuation characterization parameter obtained from the sound data; An image analysis module, which is connected to the data acquisition module and the data analysis module, and is used to determine the qualification of the grinding wheel wear degree based on the evenness of the abrasive grain distribution of the grinding wheel surface image when the sound fluctuation is within a reasonable range, or to determine the correlation between the sound intensity and the abrasive grain distribution density according to the distribution density evaluation value of the grinding wheel surface image when the sound fluctuation is not within a reasonable range; A parameter adjustment module, which is connected to the image analysis module, and is used to determine to reduce the feed speed of the grinding wheel based on the evenness of the abrasive grain distribution of the grinding wheel surface image under the condition that the grinding wheel wear degree is unqualified, or to determine to increase the machining distance according to the absolute value of the relative difference between the distribution density evaluation value and the preset distribution density evaluation value under the condition of determining the correlation between the sound intensity and the abrasive grain distribution density; A data processing module, which is connected to the data acquisition module and the parameter adjustment module, and is used to determine the qualification of the tapered hole machining according to the surface roughness of the tapered hole under the condition of determining the adjustment method; A data optimization module, which is connected to the data processing module, and is used to determine to increase the grinding wheel speed or the grinding wheel linear speed according to the ratio of the surface roughness to the preset surface roughness under the condition that the tapered hole machining is unqualified.

[0026] In the embodiment of the present invention, the sound data and the image of the grinding wheel surface are both collected synchronously within a detection period.

[0027] In the embodiment of the present invention, the detection period is the machining time for the grinding wheel to machine the tapered hole.

[0028] In the embodiments of the present invention, the sound sensor is an acoustic emission sensor, and there is no specific limitation as long as it can collect sound data.

[0029] In the embodiments of the present invention, the image acquisition device includes but is not limited to a camera, an industrial camera, or an infrared camera.

[0030] In the embodiments of the present invention, the grinding wheel processes the tapered hole with machining parameters of a feed rate of 20 mm / min, a machining spacing of 0.5 mm, a grinding wheel linear speed of 30 mm / s, and a grinding wheel rotational speed of 2000 rpm. The values of the above parameters are the historical averages of the parameters in the working process for qualified machining of the tapered hole.

[0031] Specifically, the present invention collects sound data and the surface image of the grinding wheel. The data analysis module evaluates the rationality of the sound fluctuation. The image analysis module judges the wear of the grinding wheel and the relationship between the sound and the abrasive distribution. The parameter adjustment module adjusts the feed rate or the machining spacing accordingly. The data processing module determines the machining quality of the tapered hole. The data optimization module optimizes the grinding wheel rotational speed or the grinding wheel linear speed for unqualified situations, realizing the monitoring and adjustment of the grinding process. Through precise data analysis and processing, the machining accuracy and efficiency of the tapered hole are improved.

[0032] Specifically, under the condition of determining that the sound data is obtained, the data analysis module determines whether the sound fluctuation of the grinding wheel during the grinding process is within a reasonable range according to the comparison result between the sound fluctuation characterization parameter obtained from the sound data and the preset sound fluctuation characterization parameter of 0.85; If the sound fluctuation characterization parameter is less than or equal to the preset sound fluctuation characterization parameter, it is determined that the sound fluctuation of the grinding wheel during the grinding process is within a reasonable range; If the sound fluctuation characterization parameter is greater than the preset sound fluctuation characterization parameter, it is determined that the sound fluctuation of the grinding wheel during the grinding process is not within a reasonable range.

[0033] In the embodiments of the present invention, the value of the preset sound fluctuation characterization parameter is 0.85. The preset sound fluctuation characterization parameter is obtained under the condition of taking the average value of the sound fluctuation characterization parameters when the sound fluctuation during the grinding process is within a reasonable range. However, the above value is not limited to this, and those skilled in the art can also adjust this value according to actual needs.

[0034] In the embodiments of the present invention, the reasonable range of the sound fluctuation is 60 dB - 80 dB.

[0035] Specifically, the data analysis module calculates the sound fluctuation characterization parameter according to the following formula. Let: (1) Wherein, S represents the sound fluctuation characterization parameter, N represents the number of sound data collected by the sound sensor, represents the sound intensity at the i-th time point, μ represents the average value of the sound intensity, and σ represents the standard deviation of the sound intensity.

[0036] Specifically, the present invention determines whether the sound fluctuation during the grinding process of the grinding wheel is within a reasonable range by comparing the sound fluctuation characterization parameter with a preset sound fluctuation characterization parameter, monitors the sound fluctuation during the grinding of the grinding wheel, discovers potential grinding problems, and improves the accuracy and efficiency of the conical hole machining.

[0037] Specifically, under the condition of determining that the surface image of the grinding wheel is obtained, the image analysis module determines the qualification of the wear degree of the grinding wheel according to the comparison result between the uniformity of abrasive grain distribution in the surface image of the grinding wheel when the sound fluctuation is within a reasonable range and the preset uniformity of abrasive grain distribution of 0.83; If the uniformity of abrasive grain distribution is less than or equal to the preset uniformity of abrasive grain distribution, it is determined that the wear degree of the grinding wheel is qualified; If the uniformity of abrasive grain distribution is greater than the preset uniformity of abrasive grain distribution, it is determined that the wear degree of the grinding wheel is unqualified.

[0038] In the embodiment of the present invention, the preset uniformity of abrasive grain distribution takes a value of 0.83, and the preset uniformity of abrasive grain distribution is obtained by taking the average value of the historical uniformity of abrasive grain distribution when the wear degree of the grinding wheel is qualified. However, the above value is not limited to this, and those skilled in the art can also adjust this value according to actual needs.

[0039] Specifically, the image analysis module calculates the uniformity of abrasive grain distribution according to the following formula. Set: (2) Wherein, U represents the uniformity of abrasive grain distribution, M represents the total number of abrasive grains in the surface image of the grinding wheel, represents the area of the j-th abrasive grain, represents the average value of the areas of all abrasive grains.

[0040] Specifically, under the condition of determining that the wear degree of the grinding wheel is unqualified, the parameter adjustment module determines the adjustment method of the feed speed of the grinding wheel according to the comparison result between the difference between the uniformity of abrasive grain distribution and the preset uniformity of abrasive grain distribution and the preset difference of 0.37; If the difference is less than or equal to the preset difference, it is determined to reduce the feed speed of the grinding wheel to the corresponding value with a first preset feed speed adjustment coefficient of 0.95; If the difference is greater than the preset difference, it is determined to reduce the feed speed of the grinding wheel to the corresponding value with a second preset feed speed adjustment coefficient of 0.91; The difference is the difference between the abrasive particle distribution uniformity and the preset abrasive particle distribution uniformity.

[0041] In the embodiment of the present invention, the preset difference value is 0.37, but the above value is not limited to this, and those skilled in the art can also adjust this value according to actual needs.

[0042] In the embodiment of the present invention, the reduced feed rate is the product of the feed rate and the m-th preset feed rate adjustment coefficient, where m takes the value of 1 or 2, T1 is the first preset feed rate adjustment coefficient of 0.95, and T2 is the second preset feed rate adjustment coefficient of 0.91.

[0043] Specifically, the present invention evaluates the qualification of the grinding wheel wear degree. When it is unqualified, it adjusts the grinding wheel feed rate according to the difference between the abrasive particle distribution uniformity and the preset abrasive particle distribution uniformity, accurately judges the grinding wheel wear state, and adjusts the feed rate according to the wear degree to ensure the machining quality and efficiency.

[0044] Specifically, under the condition of determining to obtain the grinding wheel surface image, the image analysis module determines the correlation between the sound intensity when the sound fluctuation is not within the reasonable range and the abrasive particle distribution density according to the comparison result between the distribution density evaluation value of the grinding wheel surface image when the sound fluctuation is not within the reasonable range and the preset distribution density evaluation value of 0.81; If the distribution density evaluation value is less than or equal to the preset distribution density evaluation value, it is determined that the sound intensity when the sound fluctuation is not within the reasonable range is positively correlated with the abrasive particle distribution density; If the distribution density evaluation value is greater than the preset distribution density evaluation value, it is determined that the sound intensity when the sound fluctuation is not within the reasonable range is negatively correlated with the abrasive particle distribution density.

[0045] In the embodiment of the present invention, the preset distribution density evaluation value is 0.81, but the above value is not limited to this, and those skilled in the art can also adjust this value according to actual needs.

[0046] In the embodiment of the present invention, the positive correlation means that the greater the abrasive particle distribution density, the greater the sound intensity when the sound fluctuation is not within the reasonable range, and the negative correlation means that the smaller the abrasive particle distribution density, the greater the sound intensity when the sound fluctuation is not within the reasonable range.

[0047] Specifically, the image analysis module calculates the distribution density evaluation value according to the following formula. Let: (3) where D represents the distribution density evaluation value, M represents the total number of abrasive particles in the grinding wheel surface image, represents the distance between the p-th abrasive particle and its nearest neighbor abrasive particle, represents the average value of the distances between adjacent abrasive particles.

[0048] Specifically, under the condition that the parameter adjustment module determines the correlation between the sound intensity with the sound fluctuation not within the reasonable range and the abrasive grain distribution density, it determines the adjustment method for the machining distance between the grinding wheel and the tapered hole according to the comparison result between the distribution density evaluation value and the preset distribution density evaluation value and the absolute value of the relative difference with the preset absolute value of relative difference 0.43; If the absolute value of the relative difference is less than or equal to the preset absolute value of relative difference, it is determined to increase the machining distance to the corresponding value with the first preset distance adjustment coefficient 1.07; If the absolute value of the relative difference is greater than the preset absolute value of relative difference, it is determined to increase the machining distance to the corresponding value with the second preset distance adjustment coefficient 1.12; The absolute value of the relative difference is the absolute value of the relative difference between the distribution density evaluation value and the preset distribution density evaluation value.

[0049] In the embodiment of the present invention, the preset absolute value of relative difference is taken as 0.43, but the above value is not limited to this, and those skilled in the art can also adjust this value according to actual needs.

[0050] In the embodiment of the present invention, the increased machining distance is the product of the machining distance and the nth preset distance adjustment coefficient, where n takes the value of 1 or 2, R1 is the first preset distance adjustment coefficient 1.07, and R2 is the second preset distance adjustment coefficient 1.12.

[0051] Specifically, the present invention evaluates the correlation between the abrasive grain distribution density on the surface of the grinding wheel and the sound intensity with the sound fluctuation not within the reasonable range, calculates the distribution density evaluation value, compares it with the preset density evaluation value, and determines to increase the machining distance between the grinding wheel and the tapered hole by comparing the absolute value of the relative difference between the distribution density evaluation value and the preset density evaluation value, accurately adjusts the machining distance, optimizes the grinding process, and reduces the machining error caused by uneven abrasive grain distribution or excessive wear.

[0052] Specifically, under the condition of determining the adjustment method, the data processing module further processes the tapered hole, and determines the qualification of the tapered hole machining according to the comparison result between the surface roughness of the tapered hole and the preset surface roughness 0.92; If the surface roughness is less than or equal to the preset surface roughness, it is determined that the tapered hole machining is qualified; If the surface roughness is greater than the preset surface roughness, it is determined that the tapered hole machining is unqualified.

[0053] In the embodiment of the present invention, the preset surface roughness is taken as 0.92, but the above value is not limited to this, and those skilled in the art can also adjust this value according to actual needs.

[0054] Specifically, the surface roughness is the ratio of the result of subtracting the minimum height from the maximum height of the abrasive grains in the surface image of the grinding wheel to the average height of the abrasive grains.

[0055] Specifically, when the data optimization module determines that the taper hole machining is unqualified, it determines the optimization method of the grinding wheel machining process according to the comparison result of the ratio of the surface roughness to the preset surface roughness and the preset ratio of 0.38; If the ratio is less than or equal to the preset ratio, it is determined to increase the grinding wheel speed to the corresponding value with the preset grinding wheel speed adjustment coefficient of 1.05; If the ratio is greater than the preset ratio, it is determined to increase the grinding wheel linear speed to the corresponding value with the preset grinding wheel linear speed adjustment coefficient of 1.09; The ratio is the ratio of the surface roughness to the preset surface roughness.

[0056] In the embodiments of the present invention, the preset ratio is taken as 0.38, but the above value is not limited to this, and those skilled in the art can also adjust this value according to actual needs.

[0057] In the embodiments of the present invention, the increased grinding wheel speed is the product of the grinding wheel speed and the preset grinding wheel speed adjustment coefficient of 1.05, and the increased grinding wheel linear speed is the product of the grinding wheel linear speed and the preset grinding wheel linear speed adjustment coefficient of 1.09.

[0058] Specifically, the present invention determines the qualification of the taper hole machining by comparing the surface roughness of the taper hole with the preset surface roughness. If it is unqualified, the grinding wheel machining process is optimized, reducing the roughness of the taper hole surface, thereby improving the machining accuracy and surface quality of the taper hole.

[0059] So far, the technical solution of the present invention has been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0060] The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A movable taper hole grinder, characterized in that: include: Transverse feeding mechanism, longitudinal feeding mechanism and, The grinding mechanism is arranged on the upper part of the longitudinal feeding mechanism, and comprises a spindle box, a spindle arranged at one end of the spindle box for carrying a grinding wheel, and a grinding wheel arranged at one end of the spindle for processing the tapered hole; The detection mechanism includes a sound sensor arranged at one side of the spindle box for detecting sound data during the grinding process of the grinding wheel, and an image acquisition device arranged at the end of the spindle box for acquiring an image of the surface of the grinding wheel; The control mechanism is respectively connected with the lateral feeding mechanism, the longitudinal feeding mechanism, the grinding mechanism and the detection mechanism, and includes a data analysis module for analyzing the sound fluctuations of the grinding wheel grinding process, an image analysis module for analyzing the uniformity of abrasive distribution of the grinding wheel surface image to determine the degree of wear of the grinding wheel, and a parameter adjustment module for reducing the feeding speed of the grinding wheel based on the uniformity of abrasive distribution, or determining to increase the processing spacing according to the absolute value of the relative difference between the distribution density evaluation value and the preset distribution density evaluation value based on the correlation condition between the sound intensity and the abrasive distribution density.

2. The movable taper hole grinding machine according to claim 1, characterized in that: It also includes a column and a rotating mechanism. The rotating mechanism is arranged on the transverse feeding mechanism and includes a rotating seat and a rotating shaft arranged on the top of the rotating seat to drive the grinding mechanism to rotate.

3. The movable taper hole grinding machine according to claim 2, characterized in that: The transverse feeding mechanism includes a transverse body arranged on the upper part of the column, a transverse tool holder arranged on the transverse body for transverse feeding, and a transverse slide box arranged at one end of the transverse tool holder for driving the transverse tool holder to reciprocate.

4. The movable taper hole grinding machine according to claim 2, characterized in that: The longitudinal feeding mechanism comprises a longitudinal body arranged at the top end of the swivel seat, a longitudinal tool holder arranged on the longitudinal body for longitudinal feeding, and a longitudinal slide box arranged at one end of the longitudinal tool holder for driving the longitudinal tool holder to reciprocate.

5. The movable taper hole grinder according to any one of claims 1 to 4, characterized in that: The control mechanism further includes a data acquisition module, the data acquisition module is used to acquire the sound data of the sound sensor and the grinding wheel surface image of the image acquisition device, and the data analysis module determines that the sound fluctuation of the grinding wheel during the grinding process is within a reasonable range based on a comparison result that the sound fluctuation characterization parameter obtained from the sound data is less than or equal to a preset sound fluctuation characterization parameter under the condition of determining the acquisition of the sound data; The image analysis module determines that the degree of wear of the grinding wheel is unqualified according to a comparison result that the abrasive distribution uniformity of the grinding wheel surface image when the sound fluctuation is within a reasonable range is greater than a preset abrasive distribution uniformity.

6. The movable taper hole grinding machine according to claim 5, characterized in that: Under the condition that the degree of wear of the grinding wheel is determined to be unqualified, the parameter adjustment module determines to reduce the feed speed of the grinding wheel by a first preset feed speed adjustment coefficient based on a comparison result that the difference between the abrasive distribution uniformity and the preset abrasive distribution uniformity is less than or equal to the preset difference, or determines to reduce the feed speed of the grinding wheel by a second preset feed speed adjustment coefficient based on a comparison result that the difference between the abrasive distribution uniformity and the preset abrasive distribution uniformity is greater than the preset difference.

7. The movable taper hole grinding machine according to claim 1, characterized in that: The data analysis module determines that the sound fluctuation of the grinding wheel during the grinding process is not within a reasonable range based on a comparison result that the sound fluctuation characterization parameter obtained from the sound data is greater than a preset sound fluctuation characterization parameter under the condition of determining that the sound data is obtained; The image analysis module determines that the sound intensity of the sound fluctuation not being within a reasonable range is positively correlated with the abrasive distribution density based on a comparison result in which the distribution density evaluation value of the grinding wheel surface image is less than or equal to a preset distribution density evaluation value, or determines that the sound intensity of the sound fluctuation not being within a reasonable range is negatively correlated with the abrasive distribution density based on a comparison result in which the distribution density evaluation value of the grinding wheel surface image is greater than a preset distribution density evaluation value.

8. The movable taper hole grinding machine according to claim 7, characterized in that: The parameter adjustment module determines to increase the processing spacing by the first preset spacing adjustment coefficient based on the comparison result that the absolute value of the relative difference between the distribution density evaluation value and the preset distribution density evaluation value is less than or equal to the preset relative difference absolute value, or determines to increase the processing spacing by the second preset spacing adjustment coefficient based on the comparison result that the absolute value of the relative difference between the distribution density evaluation value and the preset distribution density evaluation value is greater than the preset relative difference absolute value, under the condition of determining the correlation between the sound intensity and the abrasive distribution density when the sound fluctuation is not within a reasonable range.

9. The movable taper hole grinding machine according to claim 1, characterized in that: The control mechanism further comprises a data processing module, which determines that the processing of the tapered hole is unqualified based on a comparison result that the surface roughness of the tapered hole is greater than a preset surface roughness under the condition of determining the adjustment mode.

10. The movable taper hole grinding machine according to claim 1, characterized in that: The control mechanism also includes a data optimization module, which, under the condition of determining that the tapered hole processing is unqualified, determines to increase the grinding wheel speed by a preset grinding wheel speed adjustment coefficient based on a comparison result that the ratio of the surface roughness to the preset surface roughness is less than or equal to the preset ratio, or determines to increase the grinding wheel linear speed by a preset grinding wheel linear speed adjustment coefficient based on a comparison result that the ratio of the surface roughness to the preset surface roughness is greater than the preset ratio.

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