Cutting process signal comprehensive acquisition platform

Abstract

The present invention discloses a comprehensive acquisition platform for cutting processing signals, which belongs to the technical field of processing monitoring equipment. It includes a quick clamp, a pad, a clamp body, a signal acquisition module, a position measurement module, a handle, a workpiece feeding module, a workpiece rapid positioning module and a workpiece. The quick clamp is installed on the pad and the workpiece feeding module, which are installed on the clamp body; the signal acquisition module is installed on the clamp body and is connected to the position measurement module and is located below the workpiece; the workpiece rapid positioning module is installed on the workpiece feeding module, which is also connected to the position measurement module; the handle is installed on both sides of the clamp body. This acquisition platform solves the problem of not being able to accurately, quickly and in large quantities obtain vibration, acoustic emission and other signals during cutting processing, and can realize the rapid establishment of data sets, which is conducive to shortening the time of applying vibration, acoustic emission and other signal monitoring to actual working conditions such as tool wear and workpiece damage.

Description

Technical Field

[0001] The present invention belongs to the technical field of processing monitoring equipment, and in particular relates to a cutting processing signal comprehensive acquisition platform. Background Art

[0002] During the cutting process, the choice of tool structure, workpiece material, and cutting parameters all affect cutting stability. Unstable machining can lead to increased tool wear and even breakage, which in turn can cause workpiece shape and position deviations or even damage. Therefore, online monitoring of signals such as vibration and acoustic emissions during the cutting process is necessary to predict early or impending damage. This requires the creation of large datasets based on actual needs, which can then be input into analytical models to assess the extent of tool wear or workpiece damage.

[0003] Yu Miao et al. invented "A three-in-one sensor fixture and multimodal tool wear status monitoring system," patent application number CN201910108390.7. The three-in-one sensor fixture includes a fixture body, a fixed tool holder, a vibration sensor, an acoustic emission sensor, and a cutting force sensor. The cutting force sensor is fixed to the fixture body, and the fixed tool holder has a mounting space for the cutting tool. The vibration sensor and acoustic emission sensor are used to be fixed to the cutting tool. Florian et al. invented "SYSTEM OF INDIRECT ESTIMATION OF THE CONDITION OF WEAR OF ACUTTING TOOL," patent application number US17164969. This system uses an acquisition module to collect signals from the cutting process and is equipped with a microprocessor to evaluate the tool wear status.

[0004] The aforementioned patent considers the use of multiple sensors to collect machining signals, which enriches monitoring information and improves monitoring stability. However, it does not consider in detail the impact of sensor placement and installation on the collected signals, nor does it consider the impact of workpiece clamping conditions. In summary, how to accurately, quickly, and massively acquire machining signals such as vibration and acoustic emissions during cutting operations remains an urgent issue. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a comprehensive cutting processing signal acquisition platform, which solves the problem of not being able to accurately, quickly and in large quantities obtain vibration, acoustic emission and other signals during cutting processing. It can realize the rapid establishment of data sets, which is conducive to shortening the time for applying vibration, acoustic emission and other signal monitoring to actual working conditions such as tool wear and workpiece damage.

[0006] The technical solution of the present invention:

[0007] A comprehensive cutting processing signal acquisition platform includes a quick clamp, a pad, a clamp body, a signal acquisition module, a position measurement module, a handle, a workpiece feed module, a workpiece rapid positioning module, and a workpiece. The quick clamp is used to clamp the workpiece and is mounted on the pad and workpiece feed module, which are mounted on the clamp body. The signal acquisition module is mounted on the clamp body and connected to the position measurement module, located below the workpiece, and is used to measure signals such as vibration and acoustic emission during cutting. The workpiece rapid positioning module is mounted on the workpiece feed module and is used to locate the workpiece between the workpiece and the workpiece feed module, which is also connected to the position measurement module. The handles are mounted on both sides of the clamp body.

[0008] Furthermore, the quick clamp includes a clamp body, an adjusting screw, an adjusting nut and a pressure head; the adjusting screw located at the end of the clamp body can adjust its extension distance through the two adjusting nuts at its upper and lower ends, thereby controlling the extension distance of the pressure head in contact with it to tighten workpieces of different thicknesses.

[0009] Furthermore, the pressure head of the quick clamp adopts a cross-shaped pressure head to improve the clamping rigidity of thin-walled workpieces, and a flexible gasket is pasted on the bottom of the cross-shaped pressure head to evenly distribute the clamping pressure.

[0010] Furthermore, the signal acquisition module includes a sensor fixing unit, a locking block, a slider, a guide rail, and a limit block. The guide rail is fixed to the clamp body, and the sensor fixing unit is connected to the slider. The slider is mounted on the guide rail, allowing the sensor fixing unit to slide on the guide rail. At the same time, limit blocks are installed at both ends of the guide rail to limit the range of movement of the sensor fixing unit. The bottom of the sensor fixing unit is equipped with a locking block, and the sensor fixing unit is locked to the guide rail by screwing in the locking block. A magnetic scale probe A is installed on one side of the sensor fixing unit to measure the precise position of the sensor fixing unit on the guide rail.

[0011] Furthermore, the sensor fixing unit includes a signal sensor, a buffer washer, a disc spring, a pressure-equalizing washer, a force sensor, an inclined wedge, a loading adjustment screw, a loading slider, and a mounting housing. The loading adjustment screw passes through the loading slider and is connected to the mounting housing. The movement of the loading slider is adjusted by controlling the length of the loading adjustment screw screwed into the mounting housing. The inclined wedge is installed within the mounting housing, with the inclined surface of the inclined wedge in close contact with the loading slider. When the loading slider moves, the inclined wedge can move axially within the mounting housing. The inclined wedge, loading adjustment screw, loading slider, and mounting housing together constitute an inclined wedge loading mechanism for axial loading. The force sensor is installed in the inclined wedge to measure the loading pressure applied by the inclined wedge loading mechanism. The disc springs are composed of different stiffness coefficients and different numbers of superposition to form a load-bearing elastic body. Both ends of the load-bearing elastic body are equipped with pressure-equalizing gaskets for evenly distributing the loading pressure. Among the pressure-equalizing gaskets at both ends of the load-bearing elastic body, the pressure-equalizing gasket at one end is in close contact with the force sensor probe, and the pressure-equalizing gasket at the other end is in contact with the buffer gasket. The other end of the buffer gasket is equipped with a signal sensor, and the signal sensor probe is in contact with the bottom surface of the workpiece.

[0012] Furthermore, the signal sensor may be a vibration sensor, an acoustic emission sensor, etc., to meet the needs of collecting vibration and acoustic emission signals under different working conditions.

[0013] Furthermore, the position measurement module includes a magnetic scale probe A, a magnetic scale mounting base, a magnetic scale strip, a magnetic scale probe B and a magnetic scale fixing block; the magnetic scale probe A is connected to the signal acquisition module, and the magnetic scale probe B is connected to the workpiece feeding module; the magnetic scale probe A and the magnetic scale probe B are respectively installed at the two ends of the magnetic scale strip, and the magnetic scale probe A, the magnetic scale probe B and the surface of the magnetic scale strip are spaced apart; the magnetic scale strip is attached to the magnetic scale mounting base, and magnetic scale fixing blocks are installed at both ends; the magnetic scale mounting base is fixed on the clamp body.

[0014] Furthermore, the magnetic scale probe A is connected to the sensor fixing unit, and the magnetic scale probe B is connected to the beam.

[0015] Furthermore, the workpiece feeding module includes a bearing guide rail, a guide rail limit block, a beam, a dust cover, a locking nut, a spacer ring, a bearing slider, a screw support seat, a screw nut, a nut fixing seat, a screw pressure equalizing gasket, a screw locking screw, a ball screw and a handwheel; the screw support seat is installed at the front end of the ball screw, and the screw support seat is locked to the ball screw with a spacer ring and a locking nut; the screw nut is installed in the middle of the ball screw; the screw nut is fixedly installed on the nut fixing seat; and a handwheel is installed at the rear end of the ball screw for rotating the ball screw. The screw support seat passes through one end of the middle portion of the beam and is installed in the beam. A dust cover is installed at the other end of the beam to prevent chips and dust from entering the screw support seat during cutting. A quick clamp is installed in the groove in the middle of the beam for quickly clamping the tail of the workpiece. A magnetic scale probe B is installed at the lower end of the middle portion of the beam for accurately measuring the position of the beam on the bearing guide rail. A bearing slider is installed at the bottom of each end of the beam, and the bearing slider is connected to the bearing guide rail, which is then installed on the clamping body. A pair of guide rail limit blocks are installed at each end of the bearing guide rail to limit the movement range of the beam on the bearing guide rail. The nut fixing seat is installed on the clamping body. A locking structure is designed on one side of the nut fixing seat for locking the ball screw after the beam position is adjusted using the ball screw.

[0016] Furthermore, the locking structure is U-shaped, and the locking of the ball screw is controlled by screwing the screw locking screw into one side of the locking structure. Screw equalizing gaskets are placed on the clamping surfaces of the U-shaped ends of the locking structure to prevent the surface of the ball screw from being scratched during locking.

[0017] Furthermore, the workpiece rapid positioning module includes a positioning block, mounting screws, and a positioning base. The positioning block has an opening at the front end for mounting workpieces of varying thicknesses and shapes, and the mounting screws on the positioning block are used to secure the workpiece. Two cylindrical pins are designed at the bottom of the positioning block, and the bottom plane of the positioning block forms a two-pin positioning system, allowing the workpiece with the positioning block to be mounted on the positioning base. The positioning base is mounted on the beam of the workpiece feed module.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This invention utilizes a quick-action clamp to clamp the workpiece, reducing assembly and disassembly time and improving signal acquisition efficiency during the cutting process. By replacing the quick-action clamp's pressure head with a cross-shaped pressure head and attaching a pressure-equalizing gasket to the bottom of the cross-shaped pressure head, the clamping pressure is dispersed and evenly distributed, reducing localized deformation and damage to the workpiece. It also improves the overall rigidity of thin-walled workpieces and reduces deformation during machining.

[0020] 2. The present invention designs an inclined wedge loading mechanism in the sensor fixing unit to control the fitting pressure between the sensor and the workpiece through the inclined wedge loading mechanism. The mechanism adjusts the loading pressure through the loading adjustment screw located on the side, which can shorten the overall axial length of the sensor fixing unit and provide a larger loading pressure in a smaller space. By installing a force sensor on the inclined wedge loading mechanism, the real-time value of the loading pressure is obtained for accurately adjusting the fitting pressure of the sensor. By adopting a smaller disc spring as an elastic element, the control of the loading pressure range is achieved by superimposing disc springs with different stiffness coefficients and different numbers.

[0021] 3. The signal sensor of the present invention can adopt a vibration sensor, an acoustic emission sensor, etc. to meet the needs of collecting vibration and acoustic emission signals under different working conditions.

[0022] 4. The present invention installs a slider at the bottom of the sensor fixing unit so that it can move at the bottom of the workpiece to measure cutting signals at different positions. At the same time, a magnetic scale probe A is installed on the side of the sensor fixing unit to accurately measure the relative position of the sensor fixing unit and the workpiece.

[0023] 5. The present invention adopts a magnetic scale measurement module to reduce the influence of dust, oil, etc. on the position measurement accuracy during the cutting process; by placing two magnetic scale probes on a magnetic scale at the same time, the precise position of the sensor fixing unit and the beam can be measured simultaneously and separately, greatly reducing the overall size of the acquisition platform.

[0024] 6. The present invention fixes the screw nut, moves the screw support seat, and reduces the length of the ball screw that penetrates into the clamp body, so that the beam and the sensor fixing unit can move independently in the middle of the clamp body, reducing the conflict between the two structures when moving in the middle of the clamp body; by installing a handwheel at the rear end of the ball screw, the front and rear movement of the beam can be controlled; by designing a screw locking structure on one side of the nut fixing seat, the screwing of the screw locking screw is controlled to lock the ball screw to prevent it from rotating, and a screw equalizing gasket is placed inside the screw locking structure to prevent the surface of the ball screw from being scratched during locking.

[0025] 7. The present invention installs a quick clamp in the middle groove of the beam to clamp the tail of the workpiece to prevent the workpiece from moving during cutting and affecting the signal measurement; installs a load-bearing slider at the bottom of each end of the beam to evenly distribute the loading pressure when the quick clamp is clamped, and at the same time, adopts a wide guide rail to improve the torsional resistance of the structure and the overall rigidity of the workpiece feeding module; installs a magnetic scale probe B at the lower end in the middle of the beam to accurately measure the position of the beam on the guide rail, which is used to accurately control the feed amount of the beam pushing the workpiece.

[0026] 8. The present invention reduces the installation time for precise positioning of the workpiece and improves the efficiency of signal collection during cutting by installing a workpiece rapid positioning module at the contact position between the beam and the workpiece; by adopting a positioning block with two cylindrical pins at the bottom and utilizing a one-side two-pin positioning method formed by the bottom plane of the positioning block, the workpiece equipped with the positioning block can be quickly and accurately installed on the positioning base, thereby realizing rapid positioning of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a front view of the overall structure of the present invention;

[0029] Figure 3 It is a left view of the overall structure of the present invention;

[0030] Figure 4 It is a top view of the overall structure of the present invention;

[0031] Figure 5 It is a cross-sectional schematic diagram of the present invention;

[0032] Figure 6 It is a structural diagram of a quick clamp;

[0033] Figure 7 It is a structural diagram of the signal acquisition module;

[0034] Figure 8 Schematic diagram of the cross section of the signal acquisition module;

[0035] Figure 9 It is a structural diagram of the position measurement module;

[0036] Figure 10 It is a structural diagram of the workpiece feeding module;

[0037] Figure 11 is a cross-sectional schematic diagram of the workpiece feeding module;

[0038] Figure 12 This is a structural diagram of the workpiece rapid positioning module;

[0039] Figure 13 This is a cross-sectional diagram of the workpiece rapid positioning module;

[0040] In the figure: 1-quick clamp, 101-clamp body, 102-adjusting screw, 103-adjusting nut, 104-cross pressure head, 105-flexible gasket; 2-pad; 3-clamp body; 4-signal acquisition module, 401-sensor fixing unit, 40101-signal sensor, 40102-buffer gasket, 40103-disc spring, 40104-pressure equalizing gasket, 40105-force sensor, 40106-oblique wedge, 40107-loading adjustment screw, 40108-loading slider, 40109-mounting housing, 402-locking block, 403-slider, 404-guide rail, 405-limit block; 5-position measurement module, 501- Magnetic scale probe A, 502-magnetic scale mounting base, 503-magnetic scale strip, 504-magnetic scale probe B, 505-magnetic scale fixing block; 6-handle; 7-workpiece feed module, 701-bearing guide rail, 702-guide rail limit block, 703-beam, 704-dust cover, 705-locking nut, 706-spacer ring, 707-bearing slider, 708-screw support seat, 709-screw nut, 710-nut fixing seat, 711-screw equalizing gasket, 712-screw locking screw, 713-ball screw, 714-handwheel; 8-workpiece rapid positioning module, 801-positioning block, 802-mounting screw, 803-positioning base; 9-workpiece. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] Reference Figure 1-Figure 5The present invention discloses a comprehensive signal acquisition platform for cutting processing, comprising a quick clamp 1, a cushion block 2, a clamp body 3, a signal acquisition module 4, a position measurement module 5, a handle 6, a workpiece feeding module 7, a workpiece rapid positioning module 8, and a workpiece 9. The quick clamp 1 is used to press the workpiece 9 and is installed on the cushion block 2 and the workpiece feeding module 7. The cushion block 2 is installed on both sides of the front end of the clamp body 3. The signal acquisition module 4 is installed in the middle of the clamp body 3, below the workpiece 9, and is used to measure signals such as vibration and acoustic emission during cutting, and is connected to the position measurement module 5. The workpiece rapid positioning module 8 is installed on the workpiece feeding module 7 and is used to position the workpiece 9 between the workpiece feeding module 7. The handle 6 is installed on both sides of the clamp body 3. The workpiece feeding module 7 is installed on both sides of the rear end of the clamp body 3 and is connected to the position measurement module 5.

[0043] Reference Figure 1 and Figure 6 The quick clamp 1 includes a clamp body 101, an adjusting screw 102, an adjusting nut 103, a cross-shaped pressure head 104, and a flexible gasket 105. The pressure head of the quick clamp 1 adopts a cross-shaped pressure head 104, which is used to improve the clamping rigidity of the thin-walled workpiece 9, and a flexible gasket 105 is pasted on the bottom of the cross-shaped pressure head 104 to evenly distribute the loading pressure; the adjusting screw 102 located on the end of the clamp body 101 of the quick clamp 1 can adjust its extension distance through the two adjusting nuts 103 at its upper and lower ends, thereby controlling the extension distance of the cross-shaped pressure head in contact with it to clamp workpieces 9 of different thicknesses; the quick clamp 1 is installed on the pad 2, and the other end of the pad 2 is installed on both sides of the front end of the clamp body 3.

[0044] Reference Figure 1 、 Figure 7 and Figure 8The signal acquisition module 4 includes a sensor fixing unit 401, a locking block 402, a slider 403, a guide rail 404, and a limit block 405. The sensor fixing unit 401 includes a signal sensor 40101, a buffer washer 40102, a disc spring 40103, a pressure-equalizing washer 40104, a force sensor 40105, an inclined wedge 40106, a loading adjustment screw 40107, a loading slider 40108, and a mounting housing 40109. The loading adjustment screw 40107 passes through the loading slider 40108 and is connected to the mounting housing 40109. The diameter of the loading adjustment screw 40107 near the adjustment handle is larger than the diameter of the portion passing through the loading slider 40108. The movement of the loading slider 40108 is adjusted by controlling the length of the loading adjustment screw 40107 screwed into the mounting housing 40109. The inclined wedge 40106 is mounted within the mounting housing 40109. Its inclined surface is in close contact with the loading slider 40108, allowing it to move axially within the mounting housing 40109 under the compressive force of the loading slider 40108. The inclined wedge 40106, the loading adjustment screw 40107, the loading slider 40108, and the mounting housing 40109 together form an inclined wedge loading mechanism for axial loading. A force sensor 40105 is mounted within the inclined wedge 40106 to measure the loading pressure applied by the inclined wedge loading mechanism. Disc springs 40103 with different stiffness coefficients and numbers are stacked together to form a load-bearing elastic body. Pressure-equalizing washers 40104 are installed at both ends of the load-bearing elastic body to evenly distribute the loading pressure. The pressure-equalizing washers 40104 at one end of the load-bearing elastic body are in close contact with the probe of a force sensor 40105, while the pressure-equalizing washers 40104 at the other end are in contact with a buffering washer 40102. The other end of the buffering washer 40102 is equipped with a signal sensor 40101, whose probe contacts the bottom surface of the workpiece 9. Signal sensor 40101 can be a vibration sensor, acoustic emission sensor, or the like to meet the requirements for collecting vibration and acoustic emission signals under different working conditions. The guide rail 404 is fixed to the clamp body 3. The sensor fixing unit 401 is connected to the slider 403 via the mounting housing 40109. The slider 403 is mounted on the guide rail 404, allowing the sensor fixing unit 401 to slide on the guide rail 404. Limit blocks 405 are installed at both ends of the guide rail 404 to restrict the range of movement of the sensor fixing unit 401. A locking block 402 is installed at the bottom of the mounting housing 40109 of the sensor fixing unit 401. The screws on the locking block 402 are tightened to lock the sensor fixing unit 401 to the guide rail 404. A magnetic scale probe A501 is installed on the left side of the sensor fixing unit 401 to measure the precise position of the sensor fixing unit 401 on the guide rail 404.

[0045] Reference Figure 1 and Figure 9The position measurement module 5 includes a magnetic scale probe A501, a magnetic scale mounting base 502, a magnetic scale strip 503, a magnetic scale probe A501, and a magnetic scale fixing block 505. The magnetic scale probe A501 is connected to the sensor fixing unit 401, and the magnetic scale probe B504 is connected to the workpiece feeding module 7. The magnetic scale probes A501 and A501 are respectively mounted at the ends of the magnetic scale strip 503, with a spacing of approximately 1 mm from the surface of the magnetic scale strip 503. The magnetic scale strip 503 is attached to the magnetic scale mounting base 502, with magnetic scale fixing blocks 505 installed at both ends. The magnetic scale mounting base 502 is fixed to the clamp body 3.

[0046] Reference Figure 1 The handles 6 are located on both sides of the clamp body 3 and are used to move the collection platform.

[0047] Reference Figure 1 、 Figure 10 and Figure 11 The workpiece feed module 7 includes a bearing guide rail 701, a guide rail stop block 702, a beam 703, a dust cover 704, a locking nut 705, a spacer ring 706, a bearing slider 707, a screw support 708, a screw nut 709, a nut fixing seat 710, a screw pressure-balancing washer 711, a screw locking screw 712, a ball screw 713, and a handwheel 714. The screw support 708 is mounted on the front end of the ball screw 713 and is locked to the ball screw 713 using a spacer ring 706 and a locking nut 705. A screw nut 709 is mounted in the middle of the ball screw 713. The screw nut 709 is fixedly mounted on the nut fixing seat 710. A handwheel 714 is mounted on the rear end of the ball screw 713 for rotating the ball screw 713. The screw support seat 708 passes through one end of the middle part of the beam 703 and is installed in the beam 703. A dust cover 704 is installed at the other end of the beam 703 to prevent chips and dust from entering the interior of the screw support seat 708 during the cutting process; a quick clamp 1 is installed in the groove in the middle of the beam 703 for quickly clamping the tail of the workpiece 9; a magnetic scale probe B504 is installed at the lower end of the middle of the beam 703 for accurately measuring the position of the beam 703 on the bearing guide rail 701; a bearing slider 707 is installed at the bottom of each end of the beam 703, and the bearing slider 707 is connected to the bearing guide rail 701, and then the bearing guide rail 701 is installed on both sides of the clamp body 3; a pair of guide rail limit blocks 702 are installed at each end of the bearing guide rail 701 to limit the moving range of the beam 703 on the bearing guide rail 701. The screw nut 709 is installed on the nut fixing seat 710, and the nut fixing seat 710 is installed at the rear end in the middle of the clamp body 3; a locking structure is designed on one side of the nut fixing seat 710, and the locking structure is U-shaped. The locking of the ball screw 713 is controlled by screwing the screw locking screw 712 into one side of the locking structure. At the same time, screw equalizing gaskets 711 are placed on the clamping surfaces of the U-shaped ends of the locking structure to prevent the surface of the ball screw 713 from being scratched during locking.

[0048] Reference Figure 1 、 Figure 12 and Figure 13 The workpiece rapid positioning module 8 includes a positioning block 801, mounting screws 802, and a positioning base 803. The front end of the positioning block 801 is designed with an opening for mounting workpieces 9 of varying thicknesses and shapes. The mounting screws 802 on the positioning block 801 are used to secure the workpiece 9. Two cylindrical pins are designed at the bottom of the positioning block 801. The bottom surface of the positioning block 801 forms a two-pin positioning mechanism, allowing the workpiece 9, equipped with the positioning block 801, to be quickly and accurately mounted on the positioning base 803. The positioning base 803 is mounted on the beam 703 of the workpiece feed module 7.

[0049] Steps to use the collection platform:

[0050] The first step is to refer to Figure 1 , use the handle 6 to move the acquisition platform to a suitable position on the machine tool workbench, and use a fixing means such as a pressure plate to fix the acquisition platform on the machine tool workbench.

[0051] Step 2: Refer to Figure 1 、 Figure 7 and Figure 8 According to the actual acquisition requirements, a suitable signal sensor 40101, that is, a suitable vibration, acoustic emission or other sensor, is selected, and the signal sensor 40101 is installed in the sensor fixing unit 401. Based on the position measurement data of the sensor fixing unit 401 by the magnetic scale probe A501 in the position measurement module 5, the appropriate position of the sensor fixing unit 401 on the guide rail 404 is adjusted, and then the sensor fixing unit 401 is locked on the guide rail 404 with the locking block 402.

[0052] Step 3: Refer to Figure 1 and Figure 12 , install the workpiece 9 on the positioning block 801, tighten it with the mounting screws 802, and insert the positioning block 801 into the positioning base 803 located on the beam 703.

[0053] Step 4: Reference Figure 1 、 Figure 10 and Figure 11 , use the handwheel 714 to adjust the position of the beam 703, and read the position data of the beam 703 collected by the magnetic scale probe B504 in the position measurement module 5, accurately adjust the length of the workpiece 9 extending out of the collection platform, and then use the locking structure on the nut fixing seat 710 to lock the ball screw 713.

[0054] Step 5, refer to Figure 1 and Figure 6 , use the manual clamp 1 to clamp the workpiece 9.

[0055] Step 6, reference Figure 1 、 Figure 7 and Figure 8 , adjust the length of the loading adjustment screw 40107 in the sensor fixing unit 401 screwed into the mounting shell 40109, and read the pressure data of the force sensor 40105 to control the fitting pressure of the signal sensor 40101 on the lower surface of the workpiece 9, and accurately control the fitting pressure to an appropriate range.

[0056] Step 7, reference Figure 1 , use a milling cutter to mill the surface or side of the workpiece 9, or drill the workpiece 9, and collect signals such as vibration and acoustic emission.

Claims

1. Cutting process signal comprehensive acquisition platform, characterized by: The cutting processing signal comprehensive acquisition platform comprises a quick clamp (1), a cushion block (2), a clamp body (3), a signal acquisition module (4), a position measurement module (5), a handle (6), a workpiece feeding module (7), a workpiece rapid positioning module (8) and a workpiece (9); the quick clamp (1) is used for pressing the workpiece (9) and is installed on the cushion block (2) and the workpiece feeding module (7), and the cushion block (2) and the workpiece feeding module (7) are installed on the clamp body (3); the signal acquisition module (4) is installed on the clamp body (3) and is connected to the position measurement module (5), is located below the workpiece (9), and is used for measuring the vibration and acoustic emission signals of the workpiece (9) during cutting processing; the workpiece rapid positioning module (8) is installed on the workpiece feeding module (7) and is used for positioning between the workpiece (9) and the workpiece feeding module (7), and the workpiece feeding module (7) is also connected to the position measurement module (5); the handle (6) is installed on both sides of the clamp body (3); The signal acquisition module (4) comprises a sensor fixing unit (401), a locking block (402), a slider (403), a guide rail (404) and a limit block (405); the guide rail (404) is fixed on the clamp body (3), the sensor fixing unit (401) is connected to the slider (403), and the slider (403) is installed on the guide rail (404), so that the sensor fixing unit (401) can slide on the guide rail (404). At the same time, both ends of the guide rail (404) A limit block (405) is installed to limit the movement range of the sensor fixing unit (401); a locking block (402) is installed at the bottom of the sensor fixing unit (401), and the sensor fixing unit (401) is locked on the guide rail (404) by screwing in the screw on the locking block (402); a magnetic scale probe A (501) is installed on one side of the sensor fixing unit (401) for measuring the precise position of the sensor fixing unit (401) on the guide rail (404); The sensor fixing unit (401) comprises a signal sensor (40101), a buffer washer (40102), a disc spring (40103), a pressure equalizing washer (40104), a force sensor (40105), an inclined wedge (40106), a loading adjustment screw (40107), a loading slider (40108) and a mounting shell (40109); the loading adjustment screw (40107) passes through the loading slider (40108) and is connected to the mounting shell (40109), and the movement of the loading slider (40108) is adjusted by controlling the length of the loading adjustment screw (40107) screwed into the mounting housing (40109); the inclined wedge block (40106) is installed inside the mounting housing (40109), and the inclined surface of the inclined wedge block (40106) is in close contact with the loading slider (40108). When the loading slider (40108) moves, the inclined wedge block (40106) can move axially inside the mounting housing (40109); The inclined wedge block (40106), the loading adjustment screw (40107), the loading slider (40108) and the mounting housing (40109) together constitute an inclined wedge loading mechanism for axial loading; the force sensor (40105) is installed in the inclined wedge block (40106) for measuring the loading pressure applied by the inclined wedge loading mechanism; the disc springs (40103) are formed into a load-bearing elastic body by superimposing different stiffness coefficients and different numbers, and both ends of the load-bearing elastic body are equipped with A pressure-equalizing gasket (40104) is provided for uniformly distributing the loading pressure; of the pressure-equalizing gaskets (40104) at both ends of the load-bearing elastic body, the pressure-equalizing gasket (40104) at one end is in close contact with a probe of a force sensor (40105), and the pressure-equalizing gasket (40104) at the other end is in contact with a buffer gasket (40102); a signal sensor (40101) is provided at the other end of the buffer gasket (40102), and the probe of the signal sensor (40101) is in contact with the bottom surface of the workpiece (9); The position measurement module (5) comprises a magnetic scale probe A (501), a magnetic scale mounting seat (502), a magnetic scale strip (503), a magnetic scale probe B (504) and a magnetic scale fixing block (505); the magnetic scale probe A (501) is connected to the signal acquisition module (4), and the magnetic scale probe B (504) is connected to the workpiece feeding module (7); the magnetic scale probe A (501) and the magnetic scale probe B (504) are respectively mounted on the two ends of the magnetic scale strip (503), and a gap is left between the magnetic scale probe A (501), the magnetic scale probe B (504) and the surface of the magnetic scale strip (503); the magnetic scale strip (503) is attached to the magnetic scale mounting seat (502), and the two ends of the magnetic scale fixing blocks (505) are mounted; the magnetic scale mounting seat (502) is fixed to the clamp body (3).

2. The cutting processing signal comprehensive acquisition platform according to claim 1, characterized in that: The quick clamp (1) comprises a clamp body (101), an adjusting screw (102), an adjusting nut (103) and a pressing head; the adjusting screw (102) located at the end of the clamp body (101) can adjust its extension distance through two adjusting nuts (103) at its upper and lower ends, thereby controlling the extension distance of the pressing head in contact with the adjusting screw to compress workpieces (9) of different thicknesses.

3. The cutting processing signal comprehensive acquisition platform according to claim 2 is characterized in that: The pressure head of the quick clamp (1) is a cross-shaped pressure head (104) for improving the clamping rigidity of a thin-walled workpiece (9), and a flexible gasket (105) is pasted on the bottom of the cross-shaped pressure head (104) for uniformly distributing the clamping pressure.

4. The cutting processing signal comprehensive acquisition platform according to claim 1, characterized in that: The magnetic scale probe A (501) is connected to the sensor fixing unit (401), and the magnetic scale probe B (504) is connected to the beam (703).

5. The cutting processing signal comprehensive acquisition platform according to claim 1 is characterized in that: The workpiece feeding module (7) comprises a bearing guide rail (701), a guide rail limit block (702), a beam (703), a dust cover (704), a locking nut (705), a spacer ring (706), a bearing slider (707), a screw support seat (708), a screw nut (709), a nut fixing seat (710), a screw pressure balancing washer (711), a screw locking screw (712), a ball screw (713) and a hand wheel (714); the screw support seat (708) is installed at the front end of the ball screw (713), and The screw support seat (708) is locked on the ball screw (713) by using a spacer ring (706) and a locking nut (705); a screw nut (709) is installed in the middle of the ball screw (713); the screw nut (709) is fixedly installed on the nut fixing seat (710); a hand wheel (714) is installed at the rear end of the ball screw (713) for rotating the ball screw (713); the screw support seat (708) passes through one end of the middle part of the beam (703) and is installed in the beam (703), and the beam (703) A dust cover (704) is installed at the other end to prevent chips and dust from entering the screw support seat (708) during the cutting process; a quick clamp (1) is installed in the groove in the middle of the beam (703) for quickly clamping the tail of the workpiece (9); a magnetic scale probe B (504) is installed at the lower end of the middle of the beam (703) for accurately measuring the position of the beam (703) on the bearing guide rail (701); a bearing slider (707) is installed at the bottom of each end of the beam (703), and the bearing slider (707) is connected to the bearing guide rail (701). The carrier guide rail (701) is connected to the carrier guide rail (701), and the carrier guide rail (701) is installed on the clamp body (3); a pair of guide rail limit blocks (702) are installed at each end of the carrier guide rail (701) for limiting the movement range of the beam (703) on the carrier guide rail (701); the nut fixing seat (710) is installed on the clamp body (3); a locking structure is designed on one side of the nut fixing seat (710), and the locking structure is used to lock the ball screw (713) after the position of the beam (703) is adjusted using the ball screw (713).

6. The cutting processing signal comprehensive acquisition platform according to claim 5, characterized in that: The locking structure is U-shaped, and the ball screw (713) is locked by screw locking screws (712) screwed into one side of the locking structure. Screw pressure-equalizing washers (711) are placed on the clamping surfaces of the U-shaped ends of the locking structure to prevent the surface of the ball screw (713) from being scratched during locking.

7. The cutting processing signal comprehensive acquisition platform according to claim 1, characterized in that: The workpiece rapid positioning module (8) comprises a positioning block (801), a mounting screw (802) and a positioning base (803); the front end of the positioning block (801) is designed with an opening for mounting workpieces (9) of different thicknesses and shapes, and the mounting screw (802) on the positioning block (801) is used to lock the workpiece (9); the bottom of the positioning block (801) is designed with two cylindrical pins, and the bottom plane of the positioning block (801) is used to form a one-side two-pin positioning, so that the workpiece (9) equipped with the positioning block (801) is mounted on the positioning base (803); the positioning base (803) is mounted on the beam (703) of the workpiece feeding module (7).

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