Split type turning tool and monitoring device

Abstract

The utility model discloses a split type turning tool and a monitoring device, and relates to the field of machining, the split type turning tool comprises a tool bar, a tool bit, a strain gauge, a vibration sensor and an acoustic emission sensor, the tool bit of the split type turning tool can be replaced according to actual requirements or periods so as to avoid use abrasion of the tool bit, and the monitoring device is simple in structure and convenient to use. By arranging a series of sensors on the mounting part of the cutter bar, real-time high-frequency collection of signals such as pressure, torque, transverse force, lateral force, three-way vibration and sound can be achieved, monitoring of multiple signals is achieved, and intelligent production can be promoted; the monitoring device comprises the signal acquisition module, the post-processing module and the split turning tool, and the signal acquisition module and the post-processing module can realize digital signal acquisition and analog quantity output so as to reversely regulate and control specific machining parameters to push closed-loop control; and effective technical guidance is provided for visualization and intelligentization of processing production.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a split-type lathe tool and monitoring device. Background Technology

[0002] Lathe tools are among the most widely used cutting tools in manufacturing. Many high-precision, high-surface-quality basic components are machined by turning. During turning, due to the high-speed friction between the tool and the material, the tool will wear down after a period of use, leading to a decrease in machining accuracy. Furthermore, improper settings of parameters such as cutting speed, depth of cut, and spindle speed can result in low machining efficiency or accelerate tool wear, reducing its service life. In severe cases, it can even cause chipping or tool breakage, thereby reducing the surface quality of the machined workpiece or even damaging the machine tool spindle. Therefore, it is necessary to collect information about the tool's machining process.

[0003] The following problems exist in the existing technology: (1) The existing methods for monitoring the processing status are not accurate and systematic enough. Most studies only collect and analyze a single signal. However, a single signal does not reflect the status comprehensively enough, which often leads to inaccurate or even wrong judgments or identifications; (2) A complete closed-loop control has not been formed; (3) The spatial arrangement of the cutting tool and its monitoring components is unreasonable. Utility Model Content

[0004] This invention provides a split-type lathe tool and monitoring device to solve the problems in the prior art.

[0005] In a first aspect, this utility model provides a split-type lathe tool, including a tool holder, a tool head, a strain gauge, a vibration sensor, and an acoustic emission sensor; one end of the tool holder is provided with a mounting part, and the tool head is detachably connected to the mounting part; the strain gauge, the vibration sensor, and the acoustic emission sensor are all disposed on the mounting part.

[0006] Secondly, this embodiment provides a monitoring device, including a signal acquisition module, a post-processing module, and a split-type lathe tool; the strain gauge, vibration sensor, and acoustic emission sensor of the split-type lathe tool are all connected to the signal acquisition module via wires; the signal acquisition module and the post-processing module are communicatively connected.

[0007] The beneficial effects of this utility model are as follows.

[0008] The split-type lathe tool of this utility model can replace the tool head according to actual needs or periodicity to avoid tool head wear. By setting a series of sensors on the mounting part of the tool holder, namely strain gauges, vibration sensors and acoustic emission sensors, it can realize real-time high-frequency acquisition of signals such as pressure, torque, lateral force, side force, triaxial vibration and sound, realize the monitoring of multiple signals, and promote intelligent production. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the lathe tool of this application;

[0011] Figure 2 This is another structural schematic diagram of the cutting tool of this application (the vibration sensor and acoustic emission sensor are hidden);

[0012] Figure 3 This is a side view of the cutting tool of this application;

[0013] Figure 4 yes Figure 3 AA diagram;

[0014] Figure 5 This is a partial structural schematic diagram of the cutting tool of this application;

[0015] Figure 6 This is a connection diagram of the monitoring device of this application;

[0016] Figure 7 This is a schematic diagram showing the connection between the cutting tool and the signal acquisition module in this application;

[0017] Figure 8 yes Figure 7 A schematic diagram of the signal acquisition module;

[0018] Figure 9 This is a connection diagram of the post-processing module of this application;

[0019] The markings in the attached diagram are explained as follows:

[0020] 100. Tool holder; 110. Mounting part; 111. Locking head; 112. Bar part; 113. Connecting part; 114. Slot; 115. First screw hole; 120. Tool holder body; 121. First end face; 122. Second end face; 123. Wire hole; 124. Waterproof connector;

[0021] 200, cutter head; 210, plug; 220, second screw hole;

[0022] 300. Strain gauge;

[0023] 400. Vibration sensor;

[0024] 500. Acoustic emission sensor;

[0025] 600. Signal acquisition module; 610. Mounting bracket; 620. Signal acquisition board; 630. Switch; 640. Battery; 650. Charging interface; 660. Power display screen;

[0026] 700, Post-processing module; 710, Receiving unit; 720, Host computer. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0028] This embodiment discloses a split-type lathe tool and a monitoring device. First, the split-type lathe tool of this embodiment will be introduced.

[0029] like Figure 1 and Figure 2 As shown, the split-type lathe tool of this embodiment includes a tool holder 100, a tool head 200, a strain gauge 300, a vibration sensor 400, and an acoustic emission sensor 500;

[0030] A mounting portion 110 is provided at one end of the tool holder 100 along its length. The mounting portion 110 is detachably connected to the tool head 200. The detachable connection can be achieved through threaded connection or magnetic attraction, etc. In this embodiment, the detachable connection between the tool holder 100 and the tool head 200 facilitates the periodic or on-demand replacement of the tool head 200, ensuring machining quality.

[0031] In some preferred embodiments, such as Figure 1 As shown, the tool holder 100 includes a mounting portion 110 and a tool holder body 120 along its length. The tool holder body 120 has an overall square columnar structure. The two end faces of the tool holder body 120 along its length are defined as a first end face 121 and a second end face 122, respectively. The mounting portion 110 is disposed on the first end face 121 of the tool holder body 120. In this embodiment, the mounting portion 110 and the tool holder body 120 are integrally formed, which can ensure the overall strength of the tool holder 100.

[0032] In this embodiment, as Figure 3 and Figure 4As shown, the tool holder body 120 is provided with a wire hole 123. The wire hole 123 leads along the length of the tool holder body 120 to the first end face 121 and the second end face 122 of the tool holder body 120, respectively, and the wire can be passed through the wire hole 123. One end of the wire is electrically connected to the strain gauge 300, vibration sensor 400, or acoustic emission sensor 500, and the other end of the wire is electrically connected to the signal acquisition module 600. In this embodiment, each of the strain gauge 300, vibration sensor 400, and acoustic emission sensor 500 is provided with at least one corresponding wire hole 123, and multiple wires are connected to the strain gauge 300, vibration sensor 400, and acoustic emission sensor 500 respectively through the wire hole 123. In this embodiment, the wires of the strain gauge 300, vibration sensor 400, and acoustic emission sensor 500 are led outward through the wire hole 123 of the tool holder body 120, saving space and avoiding the exposed wires from being easily damaged. The overall structure is more compact and the layout is more reasonable.

[0033] In some preferred embodiments, such as Figure 4 As shown, a waterproof connector 124 corresponding to the wire hole 123 is provided on the second end face 122 of the tool holder body 120. At least a portion of the waterproof connector 124 extends into the wire hole 123, and the wire passes through the waterproof connector 124. In this embodiment, a waterproof connector 124 is provided on the rear side of the tool holder body 120, which can waterproof and seal the position of the wire hole 123, improving the durability and safety of the cutting tool under special working conditions or in humid environments.

[0034] like Figure 4 As shown, the mounting part 110 includes a locking head 111, a rod 112, and a connecting part 113. Along the length direction of the mounting part 110 (that is, the length direction of the tool holder body 120), the locking head 111, the rod 112, and the connecting part 113 are connected in sequence. In some preferred embodiments, the locking head 111, the rod 112, and the connecting part 113 are integrally formed, and the connecting part 113 is integrally formed with the tool holder body 120. That is, the tool holder 100 in this embodiment adopts an integrally formed structure, which has higher strength.

[0035] like Figure 5As shown, a slot 114 is provided on one end face of the locking head 111 facing the cutter head 200. The slot 114 is recessed inward along the length of the mounting portion 110. The cutter head 200 is provided with a plug 210, which extends outward along the length of the mounting portion 110. The shape of the plug 210 matches the inner circumferential contour of the slot 114 to achieve a clearance fit between the plug 210 and the slot 114. The plug 210 and the slot 114 can be separated along the length of the mounting portion 110. After the plug 210 is inserted into the slot 114, the locking head 111 and the cutter head 200 can be connected. In this embodiment, the fit between the slot 114 and the plug 210 can achieve a tight fit between the locking head 111 and the cutter head 200, which can transmit torque and has good structural stability.

[0036] In this embodiment, as Figure 5 As shown, the plug 210 is square in shape, and the inner periphery of the slot 114 is also square. However, the shapes of the plug 210 and slot 114 can also be other shapes, and this embodiment does not limit them.

[0037] like Figure 5 As shown, the locking head 111 is provided with a plurality of first screw holes 115 in the circumferential direction, and the plug 210 is provided with second screw holes 220 corresponding to the first screw holes 115. Screws (such as nut screws, not shown in this embodiment) are provided in the first screw holes 115 and second screw holes 220 respectively, thereby realizing a detachable connection between the locking head 111 and the cutter head 200. The connection method is simple and quick, and the fastening is good.

[0038] like Figure 4 As shown, the rod 112 is cylindrical in shape. The locking head 111 and the connecting part 113 are connected to its two axial ends, respectively. The outer diameter of the rod 112 is smaller than the length and width of the locking head 111 and the connecting part 113. That is, the rod 112 is configured as the thinnest segment of the mounting part 110. The strain gauge 300 is mounted on the mounting part 110, specifically on the outer periphery of the rod 112. The strain gauge 300 can be glued to the outer periphery of the rod 112 and compacted to ensure linear deformation testing. The strain gauge 300 is for monitoring strain type, and various bridging methods, sizes, and types of strain gauges can be used to monitor the pressure, torque, lateral force, and side force at the machining interface during the machining process. It should be noted that the model parameters, bonding angle, and bridging method of the strain gauge 300 are not limited.

[0039] like Figure 1As shown, the vibration sensor 400 is mounted on the mounting part 110. The vibration sensor 400 is used to monitor vibration signals. In this embodiment, the two ends of the vibration sensor 400 are respectively bonded to the locking head 111 and the connecting part 113 by other existing connection methods.

[0040] like Figure 1 As shown, the acoustic emission sensor 500 is mounted on the mounting part 110. The acoustic emission sensor 500 is used to monitor sound signals. In this embodiment, the two ends of the acoustic emission sensor 500 are respectively bonded to the locking head 111 and the connecting part 113 by other existing connection methods.

[0041] like Figure 6 As shown, this embodiment also discloses a monitoring device, including a signal acquisition module 600, a post-processing module 700, and the aforementioned split-type lathe tool; the strain gauge 300, vibration sensor 400, and acoustic emission sensor 500 of the split-type lathe tool are all connected to the signal acquisition module 600 via wires; the signal acquisition module 600 is communicatively connected to the post-processing module 700.

[0042] The monitoring device in this embodiment, through the strain gauge 300 and sensor on the split-type cutting tool, can realize real-time high-frequency acquisition of signals such as pressure, torque, lateral force, side force, triaxial vibration, and sound, with a corresponding acquisition frequency as high as 10240Hz. In addition, the signal acquisition module 600 and post-processing module 700 in this embodiment can realize digital signal acquisition and analog output, so as to reverse control specific processing parameters to drive closed-loop control, providing effective technical guidance for the visualization and intelligentization of processing production.

[0043] like Figure 7 and Figure 8As shown, the signal acquisition module 600 includes a mounting base 610 and a signal acquisition board 620, a switch 630, a battery 640, a charging interface 650, and a power display screen 660, all mounted on the mounting base 610. The strain gauge 300, vibration sensor 400, and acoustic emission sensor 500 are all electrically connected to the signal acquisition board 620 via wires. The signal acquisition board 620 acquires the strain signal from the strain gauge 300, the vibration signal from the vibration sensor 400, and the sound signal from the acoustic emission sensor 500. The signal acquisition board 620 can correspond one-to-one with the strain gauge 300, vibration sensor 400, and acoustic emission sensor 500, or multiple sensors capable of acquiring signals can be integrated onto a single signal acquisition board 620. The modules for strain, vibration, and sound signals are not limited in this embodiment; the signal acquisition board 620 can transmit signals to the post-processing module 700 via wired or wireless means; the switch 630 is communicatively connected to the signal acquisition board 620. By clicking the switch 630, the signal acquisition board 620 in the mounting base 610 can be activated, and by double-clicking the switch 630, the signal acquisition board 620 can be quickly turned off and signal acquisition can be stopped; the battery 640 is used to power the signal acquisition board 620; the charging interface 650 is electrically connected to the battery 640, and the battery 640 is charged through the charging interface 650; the power display screen 660 is connected to the battery 640 and is used to display the remaining power of the battery 640.

[0044] like Figure 9 As shown, the post-processing module 700 includes a receiving unit 710 and a host computer 720; the receiving unit 710 is communicatively connected to the signal acquisition board 620, and the host computer 720 is communicatively connected to the receiving unit 710. In this embodiment, the communication connection can be wired or wireless.

[0045] In this embodiment, the host computer 720 and the receiving unit 710 are connected via a Type-C cable. The host computer 720 is used as a data receiving end to display the signals collected by the processing signal acquisition board 620 in real time. The software of the host computer 720 can present the evolution curve of the collected signals (pressure, torque, lateral force, side force, triaxial vibration signal and sound, etc.) over time. At the same time, the user can display the data in the form of scatter plot or jump numbers as needed.

[0046] In this embodiment, the user can perform basic analysis and post-processing within the 720 software on the host computer, including curve filtering, FFT processing of three-dimensional vibration signals, data export, etc. The filtering method used here is not limited.

[0047] In this embodiment, the receiving unit 710 is used as a receiving relay to convert digital signals into analog signals and transmit them to the PLC through a transmission line to reversely regulate specific processing parameters and drive closed-loop control. The transmission frequency of the analog signals is as high as 5120Hz, and the transmission distance can reach 400m indoors and 2km outdoors. At the same time, the output analog signals can be either voltage (0-3V) or current (4-20mA), without specific limitations.

[0048] In this embodiment, the monitoring device has two aspects. First, the host computer software 720 acts as a data receiving end, displaying the signals collected during the processing in real time. The host computer software 720 can present the evolution curve of the collected signals over time, and users can display the data as a scatter plot or a series of numbers as needed. Simultaneously, users can perform data analysis and post-processing within the host computer software 720, including curve filtering, FFT processing of three-dimensional vibration signals, data export, etc. Second, the receiving unit 710 can act as a receiving relay, converting digital signals into analog signals and transmitting them to the machine tool via a transmission line to reverse-regulate specific processing parameters and drive closed-loop control. This provides effective technical guidance for the visualization and intelligentization of processing production.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A split-type lathe tool, characterized in that, It includes a tool holder (100), a tool head (200), a strain gauge (300), a vibration sensor (400), and an acoustic emission sensor (500); One end of the tool holder (100) is provided with a mounting part (110), and the tool head (200) is detachably connected to the mounting part (110); the strain gauge (300), vibration sensor (400) and acoustic emission sensor (500) are all provided on the mounting part (110).

2. The split-type turning tool according to claim 1, characterized in that, The tool holder (100) includes a mounting part (110) and a tool holder body (120); the mounting part (110) is disposed on the first end face of the tool holder body (120); the tool holder body (120) is provided with a wire hole (123), the wire hole (123) is connected to the first end face and the second end face of the tool holder body (120) respectively along the length direction of the tool holder body, the wire is passed through the wire hole (123), and one end of the wire is electrically connected to the strain gauge (300), the vibration sensor (400) or the acoustic emission sensor (500).

3. The split-type turning tool according to claim 2, characterized in that, A waterproof connector (124) is provided on the second end face of the tool holder body (120), and the wire passes through the waterproof connector (124).

4. The split-type turning tool according to claim 2, characterized in that, The mounting part (110) includes a locking head (111), a rod (112), and a connecting part (113) connected in sequence along its length; the locking head (111) is provided with a slot (114), the cutting head (200) is provided with a plug (210), the plug (210) is inserted into the slot (114), and the plug (210) is detachably connected to the locking head (111); the connecting part (113) is connected to the cutting head body (120).

5. The split-type turning tool according to claim 4, characterized in that, The locking head (111) is provided with a first screw hole (115), and the plug (210) is provided with a second screw hole (220). The screw is located in the first screw hole (115) and the second screw hole (220).

6. The split-type turning tool according to claim 4, characterized in that, The strain gauge (300) is disposed on the rod (112), and the vibration sensor (400) and the acoustic emission sensor (500) are disposed on the locking head (111) or the connecting part (113).

7. The split-type turning tool according to any one of claims 2 to 6, characterized in that, The tool holder body (120) and the mounting part (110) are integrally formed.

8. A monitoring device, characterized in that, It includes a signal acquisition module (600), a post-processing module (700), and a split-type lathe tool as described in any one of claims 1 to 7; the strain gauge (300), vibration sensor (400), and acoustic emission sensor (500) of the split-type lathe tool are all connected to the signal acquisition module (600) via wires; the signal acquisition module (600) is communicatively connected to the post-processing module (700).

9. The monitoring device according to claim 8, characterized in that, The signal acquisition module (600) includes a mounting base (610) and a signal acquisition board (620), a switch (630), a battery (640), a charging interface (650), and a power display screen (660), all of which are mounted on the mounting base (610). The strain gauge (300), vibration sensor (400), and acoustic emission sensor (500) are all electrically connected to the signal acquisition board (620) via wires; the switch (630) is communicatively connected to the signal acquisition board (620); the battery (640) is used to power the signal acquisition board (620); the charging interface (650) is electrically connected to the battery (640); and the power display screen (660) is connected to the battery (640).

10. The monitoring device according to claim 9, characterized in that, The post-processing module (700) includes a receiving unit (710) and a host computer (720); the receiving unit (710) is communicatively connected to the signal acquisition board (620), and the host computer (720) is communicatively connected to the receiving unit (710).

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