Abrasion monitoring system for cyclone chamfering machining tool

Abstract

The invention discloses an abrasion monitoring system for a cyclone chamfering machining tool in the technical field of numerical control machine tool automatic monitoring. The abrasion monitoring system comprises a gear hobbing machine tool, a first collecting module, a control module and an output module. A collecting groove is formed in the gear hobbing machine tool; a second collection module is arranged in the collection tank; the first acquisition module is used for acquiring processing parameters; the second acquisition module is used for acquiring the quality of the fallen cuttings in real time; the control module is used for establishing a chamfering tool wear monitoring model based on the cutting quality and the machining parameters; the machining parameters of current chamfering treatment are input into the chamfering tool abrasion monitoring model, the theoretical change condition of the cutting quality within the preset time is obtained, and whether the chamfering tool is abraded or not is judged in combination with the actual change condition of the cutting quality within the preset time; the output module is used for outputting the judgment result of the control module. According to the scheme, the cutting quality is directly monitored, and accurate and stable monitoring of the tool abrasion condition is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic monitoring of numerically controlled machine tools, and in particular is a wear monitoring system for a rotary chamfering tool. Background Art

[0002] In the field of mechanical processing, rotary chamfering technology has been widely used for its high efficiency and high precision. Rotary chamfering refers to a processing method in which the workpiece rotates and the tool rotates synchronously during the processing, and cutting and indexing are achieved during the rotation process. However, the tool will inevitably wear out during the cutting process, which not only affects the processing efficiency and product quality, but may also cause equipment damage and safety hazards.

[0003] At present, tool wear monitoring methods are mainly divided into direct method and indirect method. The direct monitoring method determines the wear state by directly measuring the changes in tool cutting edge parameters. Although it has high accuracy, it requires stopping the machine to load and unload the tool, which affects the processing efficiency. Therefore, in practical applications, the indirect monitoring method is more commonly used.

[0004] The indirect monitoring method collects signals related to tool wear during machine tool processing, such as vibration, cutting force, acoustic emission, etc., analyzes their correlation with tool wear, and establishes a mathematical model to determine the tool wear state. However, although this method is easy to implement, it has the following defects:

[0005] 1. During the cutting process, the signal changes caused by tool wear are often relatively weak. Especially when the cutting conditions are relatively stable, the vibration signal and cutting force changes may not be significant, making it difficult for the monitoring system to accurately capture the subtle changes in tool wear.

[0006] 2. Cutting fluid, chips, workpiece material, vibration and other factors may affect the monitoring signal. For example, cutting fluid may change the temperature distribution in the cutting area, thus affecting the collection of vibration signals; chips may block the sensor, causing signal distortion; different workpiece materials may cause different cutting force changes, thus affecting the judgment of wear. These factors may lead to a decrease in the stability and accuracy of the test results.

[0007] In view of the defects of the prior art, there is an urgent need for a tool wear monitoring system suitable for rotary chamfering processing, which can monitor the wear state of the tool in real time and improve the sensitivity and accuracy of the monitoring system. Summary of the invention

[0008] In order to solve the above problems, the purpose of the present invention is to provide a tool wear monitoring system for chamfering machining, which has high sensitivity and stability and can accurately reflect the actual situation of tool wear.

[0009] In order to achieve the above object, the technical solution of the present invention is as follows:

[0010] A tool wear monitoring system for rotary chamfering includes: a gear hobbing machine, a first collection module, a control module and an output module; the gear hobbing machine is provided with a collection tank; a second collection module is provided in the collection tank;

[0011] The first acquisition module is used to obtain processing parameters;

[0012] The second collection module is used to collect the quality of fallen chips in real time;

[0013] The control module is used to establish a chamfering tool wear monitoring model based on chip quality and processing parameters; the processing parameters of the current chamfering process are input into the chamfering tool wear monitoring model to obtain the theoretical change of chip quality within a preset time, and combined with the actual change of chip quality within the preset time, determine whether the chamfering tool is worn;

[0014] The output module is used to output the judgment results of the control module.

[0015] The above scheme has the following beneficial effects:

[0016] 1. This solution receives data from the first acquisition module and the second acquisition module. The processing parameters of the current chamfering process are input into the chamfering tool wear monitoring model. The model predicts the theoretical change of chip quality within a preset time based on the input processing parameters. At the same time, the control module also receives the actual chip quality change collected by the second acquisition module within the preset time. The theoretical change is compared with the actual change. If there is a significant difference between the two (exceeding the preset threshold), it is judged that the chamfering tool is worn.

[0017] This solution uses the second acquisition module to collect the quality of fallen chips in real time, which directly reflects the wear of the tool during the processing. Compared with indirect monitoring methods, such as monitoring of vibration, cutting force, acoustic emission and other signals, the change in chip quality is more directly related to the amount of tool wear, so it can more accurately capture the subtle changes in tool wear.

[0018] 2. Indirect monitoring methods are easily affected by factors such as cutting fluid, chips, workpiece material, vibration, etc., which may cause distortion of monitoring signals or decrease in stability. However, this solution avoids the interference of these external factors on the monitoring results by directly monitoring the chip quality, thereby improving the stability of monitoring.

[0019] Furthermore, a rotating groove is also provided in the gear hobbing machine; the rotating groove is connected to the collecting groove; the second collection module includes a bonding component, a conveying component and a collecting component; the bonding component is used to make the chips falling into the collecting groove close to and fit the conveying component; the conveying component is used to transfer the chips to the collecting component; the collecting component is located in the rotating groove, and the collecting component is used to collect and detect the chip quality.

[0020] Beneficial effects: The chips are brought close to and fit the conveying component by the fitting component, and then the conveying component transfers the chips to the collecting component, thus realizing the automated process of chip collection. At the same time, the design of the fitting component ensures that the chips can be accurately and stably fitted on the conveying component, avoiding the deviation or scattering of the chips during the transmission process, thereby improving the accuracy of chip collection. The chips are pushed to the conveying component and fit by the fitting component, which effectively offsets the kinetic energy of the chips when they fall, reduces the possibility of chip splashing, and ensures that the chips can enter the collecting component completely and orderly for quality inspection.

[0021] Furthermore, the fitting component includes a rotating shaft, a plurality of eccentric wheels, a plurality of connecting rods, a plurality of first springs, a plurality of connecting shafts, a plurality of piston columns and a smooth elastic cushion layer; a movable chamber is arranged in the gear hobbing machine; the rotating shaft is rotatably connected to the movable chamber; the rotating shaft is connected to a power system for driving the rotating shaft to rotate; the rotating shaft is eccentrically connected to the eccentric wheels respectively; a spring groove and a piston groove are arranged on one side of the movable chamber; the spring groove is respectively connected to the movable chamber and the piston groove; the piston groove is connected to the collecting groove; the connecting rods are respectively slidably matched with the spring groove; the piston columns are respectively slidably matched with the piston groove; the two ends of the connecting shaft are respectively fixedly connected to the connecting rod and the piston column; the first springs are respectively mounted on the connecting shaft; the two ends of the first spring are respectively fixedly connected to the connecting rod and the inner wall of the spring groove; the smooth elastic cushion layer is used to cover the end of all piston columns close to the collecting groove.

[0022] Beneficial effect: The power system drives the shaft to rotate, which in turn drives the eccentric wheel to rotate. This mechanical linkage design can efficiently convert the rotational power into the reciprocating motion of the piston column.

[0023] Driven by the connecting rod and the connecting shaft, the piston rod gradually extends outward, and uses the smooth elastic cushion layer to closely fit the chips on the conveying component, effectively reducing the activity space of the chips in the machine tool, thereby improving the efficiency of the chips being collected in the collection tank. When the chips are free to splash in the machine tool, they have high kinetic energy. If they are not handled in time, they may cause safety hazards and interfere with the detection of chip quality.

[0024] Through the close fit between the piston rod and the smooth elastic cushion, the activity range of the chips is significantly reduced and their kinetic energy is correspondingly reduced, thereby reducing the risk of accidents caused by chip splashing and improving the accuracy of cutting quality detection.

[0025] Furthermore, the conveying assembly includes a conveyor belt; the conveyor belt is located on the side of the collecting tank opposite to the piston column.

[0026] Beneficial effect: The conveyor belt can not only transport the chips, but also absorb the kinetic energy of the chips by utilizing the characteristics of the belt on the conveyor belt, thus playing a buffering role for the chips. The chips can be stably transported along the predetermined path, thus avoiding the chips from being scattered or deviated during the transmission process. This ensures that the chips can be accurately received by the collection component, thus improving the accuracy of chip collection.

[0027] Furthermore, the collection component includes a rotating carrier; the rotating carrier rotates in cooperation with the rotating groove; an annular groove for carrying chips is provided on the top of the rotating carrier; a plurality of pressure sensors are arranged in an array at the bottom of the annular groove; the pressure sensors are electrically connected to the control module; and the power system is also used to drive the rotating carrier to rotate.

[0028] Beneficial effect: By driving the rotating carrier to rotate, the chips are effectively guided into the annular groove and evenly distributed along the annular path. This design not only improves the chip collection efficiency, but also ensures the uniformity of the chips during the collection process, avoiding local accumulation or omission.

[0029] The pressure sensors arranged in an array at the bottom of the annular groove can monitor the mass distribution of the chips on the annular path in real time. As the rotating carrier rotates, the sensors continuously collect data to ensure the continuity and accuracy of the detection process. This real-time monitoring capability helps to detect abnormal conditions in a timely manner, such as too many or too few chips.

[0030] Furthermore, the power system includes a servo motor; the output shaft of the servo motor is axially fixedly connected to a transmission shaft; the transmission shaft passes through the axis of the rotating carrier; a gear set is axially fixedly connected to the top of the transmission shaft; the gear set is used to transmit the torque of the transmission shaft to the rotating shaft.

[0031] Beneficial effect: By driving the transmission shaft with a servo motor, precise control of the rotation speed and direction of the rotating carrier can be achieved. This precise control helps ensure uniform distribution of chips in the annular groove and accurate detection of chip quality by the pressure sensor.

[0032] Furthermore, a plurality of functional cavities and a plurality of transverse grooves are circumferentially arranged on one side of the annular groove; the transverse grooves connect the annular groove with the functional cavity respectively; a touch column is slidably fitted in the transverse grooves; sliders and touch blocks are arranged at both ends of the touch column; the sliders are slidably fitted in the annular grooves; the touch blocks are slidably fitted in the functional cavities; the touch blocks are fixedly connected to the touch column; an inner groove is also arranged in the end of the touch column close to the slider; a tension spring is arranged in the inner groove; both ends of the tension spring are respectively fixedly connected to the side wall of the inner groove and the slider; a second spring is arranged on the side wall of the functional cavity; both ends of the second spring are respectively fixedly connected to the side wall of the functional cavity and the touch block; a lever and a driving assembly are also arranged in the functional cavity; the lever is rotatably connected to the side wall of the functional cavity; the driving assembly is used to drive the lever to rotate; when the lever rotates a first preset angle, the lever will push the touch block to squeeze the second spring; when the lever rotates a second preset angle, the lever will release the second spring;

[0033] A through groove is also provided on the side of the annular groove away from the slider; the through groove is connected to the annular groove; an opening and closing component for realizing the connection and interruption between the through groove and the annular groove is provided at the connection between the through groove and the annular groove; a storage groove is connected to the bottom of the rotating groove; the storage groove is used to concentrate and store the chips falling from the through groove.

[0034] Beneficial effect: Through the annular groove, functional cavity and transverse groove, the structure can efficiently guide the chips on the annular groove from the working area (such as the quality inspection area) to a specific storage location. This design avoids the accumulation of chips in the working area, ensuring the cleanliness and efficient operation of the working area.

[0035] Furthermore, the drive assembly includes a first bevel gear, a second bevel gear, a gear shaft, a third bevel gear and a fourth bevel gear; the first bevel gear is axially fixedly connected to the shift rod; the first bevel gear is meshed with the second bevel gear; the second bevel gear is axially fixedly connected to the third bevel gear through the gear shaft; the third bevel gear is meshed with the fourth bevel gear; the fourth bevel gear is axially fixedly connected to the transmission shaft.

[0036] Beneficial effect: Through the coordinated action of the first bevel gear, the second bevel gear, the gear shaft, the third bevel gear and the fourth bevel gear, the torque on the transmission shaft is directly transmitted to the lever without the need for additional power input. This not only reduces energy consumption and costs, but also improves the efficiency and reliability of the entire system.

[0037] Further, a plurality of slide rails are provided at the bottom of the annular groove; a first cylinder is arranged in the slide rail; the first cylinder is rotatably connected to the slide rail; first spiral grooves are symmetrically arranged on the outer side of the first cylinder; the first spiral grooves are alternately communicated; the opening and closing assembly includes a door panel, a second cylinder, a fifth bevel gear and a sixth bevel gear; a lifting groove is further arranged at the bottom of the annular groove; the lifting groove is slidably matched with the door panel; a second protrusion is arranged on one side of the door panel; second spiral grooves are symmetrically arranged on the outer side of the second cylinder; the second spiral grooves are alternately communicated; the second spiral grooves are slidably matched with the second protrusion; the second cylinder is rotatably connected to the lifting groove; the top of the second cylinder is axially fixedly connected to the fifth bevel gear; the fifth bevel gear is meshed with the sixth bevel gear; the sixth bevel gear is axially fixedly connected to the first cylinder; a first protrusion is slidably matched on the first spiral groove, and the first protrusion is fixedly connected to the bottom of the slider.

[0038] Beneficial effects: When the slider extends outwards, while cleaning the chips, the slider drives the first protrusion to move along the first spiral groove. During the reciprocating movement along the first spiral groove, the first protrusion drives the first cylinder to rotate. The rotation of the first cylinder drives the sixth bevel gear to rotate, the rotation of the sixth bevel gear drives the fifth bevel gear to rotate, and the rotation of the fifth bevel gear drives the second cylinder to rotate, thereby driving the second protrusion to reciprocate up and down along the spiral groove, so that the door panel moves up and down along the lifting groove, thereby controlling the communication between the through groove and the annular groove.

[0039] Further, the preset time is N times the time taken for the chamfering tool to complete a complete cutting action, and N is a positive integer.

[0040] Beneficial effects: By setting the preset time to N times the time taken for the tool to complete a complete cutting action, it can be ensured that the complete chip quality can be collected in each detection cycle. This avoids the problem of incomplete chip quality caused by the incomplete cutting action, thereby improving the accuracy and reliability of the detection. Description of the Drawings

[0041] Figure 1 It is a three-dimensional structure diagram of a hobbing machine tool according to an embodiment of a tool wear monitoring system for rotary chamfering and hobbing of the present invention.

[0042] Figure 2 is Figure 1 the front view of.

[0043] Figure 3 is Figure 2 the sectional view taken along A-A in.

[0044] Figure 4 is Figure 3 the partial enlarged view at P in.

[0045] Figure 5 It is a schematic structural diagram of the driving component.

[0046] Figure 6 for Figure 4 A partial enlarged schematic diagram of point H in the middle.

[0047] Figure 7 for Figure 4 A partial enlarged schematic diagram of point M in the middle.

[0048] Figure 8 The present invention is a system block diagram of a tool wear monitoring system for rotary chamfering processing.

[0049] The reference numerals in the drawings of the specification include: 1, gear hobbing machine; 2, gear; 3, chamfering tool; 4, chips; 101, collecting trough; 102, conveyor belt; 103, piston rod; 104, piston groove; 105, first spring; 106, connecting rod; 107, connecting shaft; 108, movable chamber; 109, eccentric wheel; 110, rotating shaft; 111, smooth elastic cushion; 112, driven gear; 113, driving gear; 114, rotating carrier; 115, rotating groove; 116, servo motor; 117, storage groove; 118, annular groove; 119, through Groove; 120, functional cavity; 121, lever; 122, second spring; 123, touch block; 124, touch column; 125, tension spring; 126, slider; 127, slide rail; 128, first cylinder; 129, first protrusion; 130, first bevel gear; 131, second bevel gear; 132, gear shaft; 133, third bevel gear; 134, fourth bevel gear; 135, door panel; 136, second protrusion; 137, fifth bevel gear; 138, sixth bevel gear; 139, second cylinder; 140, first spiral groove; 141, second spiral groove. DETAILED DESCRIPTION

[0050] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0051] In the description of the present invention, it is to be understood that the terms “longitudinal”, “lateral”, “vertical”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0053] The following is further described in detail through specific implementation methods:

[0054] The embodiment is basically as shown in the attached Figure 1-Figure 8 As shown: a tool wear monitoring system for rotary chamfering processing, mainly including a gear hobbing machine 1, a first acquisition module, a control module and an output module; a collection tank 101 is arranged on the gear hobbing machine 1. In this embodiment, the gear hobbing machine 1 includes components such as a workbench, a hob spindle, a workpiece mandrel, a column and a bed. The workbench is used to carry the chamfering processing of the gear 2; the hob spindle is used to assemble the chamfering tool 3; the workpiece mandrel is used to fix and rotate the gear 2 for rotary chamfering processing; the column is used to connect the bed and bear the cutting load of the tool holder, the spindle box and the machine tool during processing. The bed is an important bearing component of the gear hobbing machine 1, which is used to bear the gravity of components such as the large column, the small column, the workbench and the load generated during the cutting of the machine tool. In this embodiment, the collection tank 101 is opened on the workbench of the gear hobbing machine 1, specifically the position where the chips 4 fall when the chamfering tool 3 and the gear 2 are processed.

[0055] The first acquisition module is used to obtain processing parameters. In this embodiment, the first acquisition module is mainly used to acquire processing parameters during the spin-chamfering process, such as cutting speed, feed rate, cutting depth, material of the gear 2 and the chamfering tool 3, etc.

[0056] A second collection module is provided in the collection tank 101 , and the second collection module is used to collect the mass of the fallen chips 4 in real time.

[0057] In this embodiment, a rotating groove 115 is also provided in the gear hobbing machine 1, and the rotating groove 115 is opened in the working table of the gear hobbing machine 1; Figure 4As shown, the top of the rotating groove 115 is connected to the bottom of the collecting groove 101; in this embodiment, the second collection module includes a fitting component, a conveying component and a collecting component; the fitting component is used to make the chips 4 falling into the collecting groove 101 close to and fit the conveying component; specifically, the fitting component includes a rotating shaft 110, a plurality of eccentric wheels 109, a plurality of connecting rods 106, a plurality of first springs 105, a plurality of connecting shafts 107, a plurality of piston rods 103 and a smooth elastic cushion layer 111; an active cavity 108 is provided in the gear hobbing machine 1, and in this embodiment, the active cavity 108 is opened above the rotating groove 115; the rotating shaft 110 passes through the bottom wall of the active cavity 108, and is rotatably connected to the bottom of the active cavity 108 through a bearing; the rotating shaft 110 is connected to a power system for driving the rotating shaft 110 to rotate, and specifically, the power system includes a servo motor 116, and in this embodiment, the servo motor 116 is installed below the rotating groove 115 by screws, as shown in the attached Figure 4 As shown; the output shaft of the servo motor 116 is axially welded and fixed with a transmission shaft; the transmission shaft passes through the axis of the rotating carrier 114, and the transmission shaft is welded and fixed to the rotating carrier 114; a gear set is axially fixedly connected to the top of the transmission shaft, and in this embodiment, the gear set includes a driving gear 113 and a driven gear 112. In some other embodiments, the number of driven gears 112 is determined according to actual needs; in this embodiment, the driving gear 113 is axially welded and fixed to the transmission shaft; the driving gear 113 and the driven gear 112 are meshed with each other; the driven gear 112 is axially welded and fixed to the bottom of the rotating shaft 110.

[0058] The rotating shaft 110 is eccentrically connected to the eccentric wheel 109. Figure 4 As shown, each eccentric wheel 109 is in a different posture at any time, that is, the top eccentric wheel 109 is a starting point, and the next eccentric wheel 109 will repeat the motion trajectory of the previous eccentric wheel 109, and reciprocate in this way. In this embodiment, a total of three eccentric wheels 109 are provided, and the three eccentric wheels 109 are welded and fixed to the rotating shaft 110. In some other embodiments, the number of eccentric wheels 109 is determined according to actual conditions; a spring groove and a piston groove 10 are opened on one side of the movable chamber 108 4; the spring groove is communicated with the active chamber 108 and the piston groove 104 respectively; the right side of the piston groove 104 is communicated with the collecting groove 101; the connecting rod 106 is respectively slidably matched with the spring groove; the piston column 103 is respectively slidably matched with the piston groove 104; the two ends of the connecting shaft 107 are respectively welded and fixed with the connecting rod 106 and the piston column 103; the first spring 105 is respectively sleeved on the connecting shaft 107; the two ends of the first spring 105 are respectively welded and fixed with the connecting rod 106 and the inner wall of the spring groove; as shown in the attached Figure 4 As shown, the smooth elastic cushion layer 111 is used to cover the right end of all piston rods 103. When the piston rod 103 moves to the right, the smooth elastic cushion layer 111 will be stretched to the right, that is, a local area of ​​the smooth elastic cushion layer 111 will overturn to the right, covering the chips 4 on the conveying component.

[0059] Specifically, the conveying assembly in this embodiment includes a conveyor belt 102, which is located on the right side of the collecting tank 101. When the smooth elastic cushion layer 111 overturns the chips 4 onto the conveyor belt 102, the conveyor belt 102 and the smooth elastic cushion layer 111 will wrap the chips 4, and move the chips 4 to the target area as the conveyor belt 102 conveys them.

[0060] The collecting assembly is located in the rotating groove 115 and is used to collect and detect the quality of the chips 4 .

[0061] Specifically, in this embodiment, the collecting component includes a rotating carrier 114, and the specific shape of the rotating carrier 114 is a disc; the rotating carrier 114 rotates in cooperation with the rotating groove 115; an annular groove 118 for carrying the chips 4 is provided at the top of the rotating carrier 114; a plurality of pressure sensors are arranged in an array at the bottom of the annular groove 118, and the pressure sensor is fixed to the bottom of the annular groove 118 by screws. In this embodiment, the pressure sensor adopts a thin film capacitive pressure sensor; the pressure sensor is electrically connected to the control module.

[0062] As attached Figure 6 As shown, a plurality of functional cavities 120 and a plurality of transverse grooves are circumferentially provided on one side of the annular groove 118; the transverse grooves connect the annular groove 118 with the functional cavities 120 respectively; a touch column 124 is slidably fitted in each of the transverse grooves; a slider 126 and a touch block 123 are provided at both ends of the touch column 124; the slider 126 is slidably fitted in the annular groove 118; the touch block 123 is slidably fitted in the functional cavity 120; the left side of the touch block 123 is welded and fixed to the right end of the touch column 124; and a Inner groove; tension springs 125 are arranged in the inner grooves; both ends of the tension springs 125 are respectively welded and fixed to the side wall of the inner groove and the left side of the slider 126; a second spring 122 is arranged on the top side wall of the functional cavity 120; both ends of the second spring 122 are respectively welded and fixed to the side wall of the functional cavity 120 and the touch block 123; a lever 121 and a driving assembly are also arranged in the functional cavity 120; the lever 121 is rotatably connected to the side wall of the functional cavity 120 through a rotating shaft; the driving assembly is used to drive the lever 121 to rotate; as shown in the attached Figure 6 As shown in FIG. 1 , when the lever 121 rotates to a first preset angle, the lever 121 pushes the contact block 123 to squeeze the second spring 122; when the lever 121 rotates to a second preset angle, the lever 121 releases the second spring 122. Figure 5As shown, the driving assembly includes a first bevel gear 130, a second bevel gear 131, a gear shaft 132, a third bevel gear 133 and a fourth bevel gear 134; the first bevel gear 130 is axially welded and fixed to the shift rod 121. Specifically, in this embodiment, the first bevel gear 130 is axially welded and fixed to the rotating shaft of the shift rod 121; the first bevel gear 130 is meshed with the second bevel gear 131; the second bevel gear 131 and the third bevel gear 133 are axially welded and fixed through the gear shaft 132; the third bevel gear 133 is meshed with the fourth bevel gear 134; the fourth bevel gear 134 is axially welded and fixed to the transmission shaft (not shown in the figure), and the specific transmission shaft passes through the axis center of the fourth bevel gear 134, so that when the transmission shaft rotates, it can drive the fourth bevel gear 134 to rotate synchronously.

[0063] Combined with Figure 4 and attached Figure 7 As shown, a through groove 119 is further provided on the side (right side) of the annular groove 118 away from the slider 126; the through groove 119 is connected with the annular groove 118; an opening and closing component for realizing the connection and interruption between the through groove 119 and the annular groove 118 is provided at the connection between the through groove 119 and the annular groove 118; a storage groove 117 is connected to the bottom of the rotating groove 115; the storage groove 117 is used to centrally store the chips 4 falling from the through groove 119.

[0064] Specifically, a plurality of slide rails 127 are provided at the bottom of the annular groove 118; a first cylinder 128 is arranged inside the slide rail 127; the first cylinder 128 is rotatably connected to both ends of the slide rail 127; a first spiral groove 140 is symmetrically provided on the outer side of the first cylinder 128, that is, the spiral directions of the two first spiral grooves 140 are different, and other parameters are the same; the first spiral grooves 140 are respectively staggered and connected; the opening and closing assembly includes a door panel 135, a second cylinder 139, a fifth bevel gear 137 and a sixth bevel gear 138; a lifting groove is also provided at the bottom of the annular groove 118; the lifting groove and the door panel 135 are slidably matched; a second protrusion 136 is welded and fixed on the left side of one side of the door panel 135; a second spiral groove 141 is symmetrically provided on the outer side of the second cylinder 139, and similarly, the spiral directions of the two second spiral grooves 141 are different, and other parameters are the same; the second spiral grooves 141 are staggered and connected; the second spiral groove 141 is slidably matched with the second protrusion 136; as shown in the attached Figure 7 As shown, the second cylinder 139 is rotatably connected to the lifting slot; the top of the second cylinder 139 is welded and fixed to the fifth bevel gear 137 axis 132; the fifth bevel gear 137 is meshed with the sixth bevel gear 138; the sixth bevel gear 138 is axially welded and fixed to the first cylinder 128; as shown in the attached Figure 6 As shown, a first protrusion 129 is slidably fitted on the first spiral groove 140 , and the first protrusion 129 is welded and fixed to the bottom of the slider 126 .

[0065] The control module is used to establish a wear monitoring model for the chamfering tool 3 based on the quality of the chips 4 and the processing parameters; the processing parameters of the current chamfering process are input into the wear monitoring model for the chamfering tool 3, and the theoretical change of the quality of the chips 4 within the preset time is obtained, and combined with the actual change of the quality of the chips 4 within the preset time, it is judged whether the chamfering tool 3 is worn. In this embodiment, the preset time is N times the time taken by the chamfering tool 3 to complete a complete cutting action, and N is a positive integer.

[0066] The output module is used to output the judgment results of the control module.

[0067] The specific implementation process is as follows:

[0068] When the system starts, each module is initialized. The control module loads the pre-established chamfering tool 3 wear monitoring model, which is trained based on a large amount of historical data and machine learning algorithms and can reflect the relationship between tool wear and chip 4 quality and processing parameters.

[0069] The first acquisition module acquires the processing parameters in the process of rotary chamfering in real time, such as cutting speed, feed rate, cutting depth, etc. For these data, the first acquisition module can directly obtain them from the gear hobbing machine 1, and the materials of the gear 2 to be processed and the chamfering tool 3 can be manually input by the staff.

[0070] When the chamfering tool 3 comes into contact with the gear 2 to be processed, the chips 4 are gradually generated and fall off the gear 2. After the chips 4 fall off, they fall into the collection tank 101, and the control module controls the servo motor 116 to operate, thereby driving the transmission shaft and the rotating carrier 114 to rotate; wherein the rotation of the transmission shaft drives the driving gear 113 to rotate, the driving gear 113 drives the driven gear 112 to rotate, the driven gear 112 drives the rotating shaft 110 to rotate, the rotating shaft 110 drives the eccentric wheel 109 to rotate, the top eccentric wheel 109 rotates to push the piston column 103 outward, and the eccentric wheel 109 behind closely follows the moving track of the eccentric wheel 109 of the upper layer, pushing the piston column 103 outward as well, so that the chips 4 falling into the collection tank 101 are continuously and orderly covered and squeezed onto the conveyor belt 102, and move to the annular groove 118 below the collection tank 101 along with the conveyor belt 102. And as the rotating carrier 114 rotates, the chips 4 will accumulate along the moving track of the annular groove 118. At this time, the pressure sensor uploads the collected data to the control module.

[0071] At the same time, the rotation of the transmission shaft will also drive the fourth bevel gear 134 to rotate, and then drive the third bevel gear 133, the gear shaft 132, the second bevel gear 131 and the first bevel gear 130 to rotate. The rotation of the first bevel gear 130 drives the lever 121 to rotate. When the lever 121 rotates counterclockwise to the adjacent Figure 6When the slider 126 is in the middle position, the lever 121 starts to move the contact block 123 and squeezes the second spring 122 until the lever 121 rotates to disengage from the contact block 123. At this time, the second spring 122 pushes the contact block 123 to move rightward, thereby pushing the contact column 124 to hit the slider 126 to the right, so that the slider 126 slides to the right. During the sliding process of the slider 126, the chips 4 on the annular groove 118 are pushed to the right. At the same time, the first protrusion 129 at the bottom of the slider 126 follows the slider 126 in the horizontal movement process, The first cylinder 128 is driven to rotate (due to the first spiral groove 140), the first cylinder 128 rotates to drive the sixth bevel gear 138 to rotate, the sixth bevel gear 138 rotates to drive the fifth bevel gear 137 to rotate, the fifth bevel gear 137 rotates to drive the second cylinder 139 to rotate, the second cylinder 139 rotates to drive the second protrusion 136 to move downward, so that the door plate 135 moves downward, at this time, the chips 4 can be pushed into the through groove 119 by the slider 126, and finally fall into the storage groove 117 for centralized storage. At this time, the next round of chips 4 can be stored in the annular groove 118 for the next round of detection.

[0072] The control module receives data from the first acquisition module and the pressure sensor.

[0073] The machining parameters of the current chamfering process are input into the chamfering tool 3 wear monitoring model.

[0074] The model predicts the theoretical change in chip quality within a preset time based on the input machining parameters.

[0075] At the same time, the control module also receives the mass change of the chips 4 actually collected by the second collection module within a preset time.

[0076] The theoretical change is compared with the actual change. If there is a significant difference between the two (exceeding a preset threshold), it is determined that the chamfering tool 3 is worn.

[0077] Output module: outputs information on tool wear status based on the judgment results of the control module.

[0078] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and / or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A tool wear monitoring system for chamfering machining, comprising a gear hobbing machine (1) and a first acquisition module, the first acquisition module being used to obtain machining parameters; characterized in that: It also includes a control module and an output module; a collecting tank (101) is provided on the gear hobbing machine (1); a second collecting module is provided in the collecting tank (101); The second collection module is used to collect the mass of the fallen chips (4) in real time; The control module is used to establish a chamfering tool (3) wear monitoring model based on the chip (4) quality and processing parameters; the processing parameters of the current chamfering process are input into the chamfering tool (3) wear monitoring model to obtain the theoretical change of the chip (4) quality within a preset time, and combined with the actual change of the chip (4) quality within the preset time, determine whether the chamfering tool (3) is worn; The output module is used to output the judgment results of the control module.

2. The tool wear monitoring system for chamfering machining according to claim 1, characterized in that: The gear hobbing machine (1) is also provided with a rotating groove (115); the rotating groove (115) is communicated with the collecting groove (101); the second collecting module comprises a fitting component, a conveying component and a collecting component; the fitting component is used to make the chips (4) falling into the collecting groove (101) approach and fit the conveying component; The conveying component is used to transfer the chips (4) to the collecting component; the collecting component is located in the rotating groove (115), and the collecting component is used to collect and detect the quality of the chips (4).

3. The tool wear monitoring system for chamfering machining according to claim 2, characterized in that: The fitting assembly comprises a rotating shaft (110), a plurality of eccentric wheels (109), a plurality of connecting rods (106), a plurality of first springs (105), a plurality of connecting shafts (107), a plurality of piston rods (103) and a smooth elastic cushion layer (111); a movable chamber (108) is arranged in the gear hobbing machine (1); the rotating shaft (110) is rotationally connected to the movable chamber (108); the rotating shaft (110) is connected to a power system for driving the rotating shaft (110) to rotate; the rotating shaft (110) is eccentrically connected to the eccentric wheels (109) respectively; a spring groove and a piston groove (104) are arranged on one side of the movable chamber (108); the spring groove is respectively connected to the movable chamber (108) 108) is connected to the piston groove (104); the piston groove (104) is connected to the collecting groove (101); the connecting rods (106) are respectively slidably matched with the spring grooves; the piston columns (103) are respectively slidably matched with the piston grooves (104); the two ends of the connecting shaft (107) are respectively fixedly connected to the connecting rod (106) and the piston column (103); the first springs (105) are respectively sleeved on the connecting shaft (107); the two ends of the first spring (105) are respectively fixedly connected to the connecting rod (106) and the inner wall of the spring groove; and the smooth elastic cushion layer (111) is used to cover the end of all the piston columns (103) close to the collecting groove (101).

4. The tool wear monitoring system for chamfering machining according to claim 3, characterized in that: The conveying assembly comprises a conveying belt (102); the conveying belt (102) is located on a side of the collecting tank (101) opposite to the piston column (103).

5. The tool wear monitoring system for chamfering machining according to claim 4, characterized in that: The collection component comprises a rotating carrier (114); the rotating carrier (114) and the rotating groove (115) are rotatably matched; the top of the rotating carrier (114) is provided with an annular groove (118) for carrying the chips (4); a plurality of pressure sensors are arranged in an array at the bottom of the annular groove (118); the pressure sensors are electrically connected to the control module; and the power system is also used to drive the rotating carrier (114) to rotate.

6. The tool wear monitoring system for chamfering machining according to claim 5, characterized in that: The power system comprises a servo motor (116); the output shaft of the servo motor (116) is axially fixedly connected to a transmission shaft; the transmission shaft passes through the axis of the rotating carrier (114); the top of the transmission shaft is axially fixedly connected to a gear set; the gear set is used to transmit the torque of the transmission shaft to the rotating shaft (110).

7. The tool wear monitoring system for chamfering machining according to claim 6, characterized in that: A plurality of functional cavities (120) and a plurality of transverse grooves are circumferentially arranged on one side of the annular groove (118); the transverse grooves respectively connect the annular groove (118) and the functional cavities (120); a touch column (124) is slidably fitted in the transverse grooves; a slider (126) and a touch block (123) are arranged at both ends of the touch column (124); the slider (126) is slidably fitted in the annular groove (118); the touch block (123) is slidably fitted in the functional cavity (120); the touch block (123) is fixedly connected to the touch column (124); an inner groove is also arranged in one end of the touch column (124) close to the slider (126); a tension spring (125) is arranged in the inner groove; both ends of the tension spring (125) are respectively fitted in the inner groove. The side wall and the slider (126) are fixedly connected; the side wall of the functional cavity (120) is provided with a second spring (122); both ends of the second spring (122) are respectively fixedly connected to the side wall of the functional cavity (120) and the touch block (123); a lever (121) and a driving assembly are also provided in the functional cavity (120); the lever (121) is rotatably connected to the side wall of the functional cavity (120); the driving assembly is used to drive the lever (121) to rotate; when the lever (121) rotates a first preset angle, the lever (121) will push the touch block (123) to squeeze the second spring (122); when the lever (121) rotates a second preset angle, the lever (121) will release the second spring (122); A through groove (119) is also provided on the side of the annular groove (118) away from the slider (126); the through groove (119) is connected to the annular groove (118); an opening and closing component for realizing the connection and interruption between the through groove (119) and the annular groove (118) is provided at the connection point between the through groove (119) and the annular groove (118); a storage groove (117) is connected to the bottom of the rotating groove (115); the storage groove (117) is used to centrally store the chips (4) falling from the through groove (119).

8. The tool wear monitoring system for chamfering machining according to claim 7, characterized in that: The driving assembly comprises a first bevel gear (130), a second bevel gear (131), a gear shaft (132), a third bevel gear (133) and a fourth bevel gear (134); the first bevel gear (130) is axially fixedly connected to the shifting rod (121); the first bevel gear (130) is meshed with the second bevel gear (131); the second bevel gear (131) is axially fixedly connected to the third bevel gear (133) via the gear shaft (132); the third bevel gear (133) is meshed with the fourth bevel gear (134); and the fourth bevel gear (134) is axially fixedly connected to the transmission shaft.

9. The tool wear monitoring system for chamfering machining according to claim 8, characterized in that: A plurality of slide rails (127) are arranged at the bottom of the annular groove (118); a first cylinder (128) is arranged inside the slide rail (127); the first cylinder (128) is rotatably connected to the slide rail (127); a first spiral groove (140) is symmetrically arranged on the outer side of the first cylinder (128); the first spiral grooves (140) are respectively connected in an interlaced manner; the opening and closing assembly comprises a door panel (135), a second cylinder (139), a fifth bevel gear (137) and a sixth bevel gear (138); a lifting groove is also arranged at the bottom of the annular groove (118); the lifting groove is slidably matched with the door panel (135); a second protrusion (136) is arranged on one side of the door panel (135); the second cylinder (139) is arranged on the outer side of the first cylinder (128); the first spiral grooves (140) are respectively connected in an interlaced manner; the opening and closing assembly comprises a door panel (135), a second cylinder (139), a fifth bevel gear (137) and a sixth bevel gear (138); a lifting groove is also arranged at the bottom of the annular groove (118); the lifting groove is slidably matched with the door panel (135); a second protrusion (136) is arranged on one side of the door panel (135); A second spiral groove (141) is symmetrically arranged on the outer side of the column (139); the second spiral grooves (141) are staggered and connected; the second spiral groove (141) is slidably matched with the second protrusion (136); the second cylinder (139) is rotatably connected with the lifting groove; the top of the second cylinder (139) is fixedly connected with the fifth bevel gear (137) axis (132); the fifth bevel gear (137) is meshed with the sixth bevel gear (138); the sixth bevel gear (138) is axially fixedly connected with the first cylinder (128); the first spiral groove (140) is slidably matched with the first protrusion (129), and the first protrusion (129) is fixedly connected with the bottom of the slider (126).

10. The tool wear monitoring system for chamfering machining according to claim 9, characterized in that: The preset time is N times the time taken by the chamfering tool (3) to complete a complete cutting action, where N is a positive integer.

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