Rolling cutting test method based on cutting tool test bench

Abstract

The application discloses a kind of based on cutting tool test bench's rolling cutting test method, including cutting medium is divided into N1 layer, N2 layer …N k Layer according to from top to bottom order, cutting medium is divided into 1 …m row along the transverse direction of cutting medium;Through longitudinal drive drive test piece box longitudinal reciprocating movement to complete cutting to N 11 Row by rolling twice by reciprocating;Utilize vertical drive drive cutting tool to move up, drive cutting tool to move to N 12 Row above;Complete the rolling cutting of N1 layer cutting medium;Through longitudinal drive drive test piece box longitudinal reciprocating movement to complete cutting to N 21 Row by rolling twice by reciprocating;Drive cutting tool to move up, drive cutting tool to move to N 22 Row above;Complete the cutting of N2 layer cutting medium;Complete the cutting of N k Layer cutting medium.The rolling cutting test method of the application can better simulate real cutting condition, to provide experimental and data support for the optimization design and performance improvement of cutting equipment.

Description

Technical Field

[0001] This invention relates to the field of testing technology for mining equipment, and more specifically, to a rolling cutting test method based on a mining cutting tool test bench. Background Technology

[0002] With the deepening of underground coal mining in my country, the proportion of all-rock tunnels has increased dramatically, placing higher demands on the rock-breaking performance of mining equipment. Currently, the cutting tools used for long-distance, high-depth hard rock tunnels and all-rock tunnel excavation are mainly hobbing cutters and cutting teeth. Their performance and the rationality of related parameter matching directly affect rock-breaking efficiency and safety. However, in related technologies, the performance testing process for cutting tools in mining equipment cannot accurately simulate real working conditions, which is detrimental to the optimized design and performance improvement of hard rock cutting equipment. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, this invention proposes a rolling cutting test method based on a cutting tool test bench. This rolling cutting test method based on a cutting tool test bench can better simulate real cutting conditions and provides experimental and data support for the optimized design and performance improvement of cutting equipment.

[0005] The present invention discloses a rolling cutting test method based on a cutting tool test bench. The test bench includes a mounting plate, a specimen box, a vertical drive, a horizontal drive, and a longitudinal drive. The mounting plate is located above the specimen box and is used to assemble the cutting tool. The specimen box is used to place the cutting medium and has an open top. The vertical drive, the horizontal drive, and the longitudinal drive are used to drive the relative movement of the mounting plate and the specimen box.

[0006] Based on the above-mentioned cutting tool test bench, the rolling cutting test method includes the following steps:

[0007] S1: Divide the cutting medium into layers N1, N2, ... N in a top-to-bottom order. k The cutting medium is divided into layers, with each layer consisting of rows 1…m along its transverse direction, and each row of the cutting medium in each layer is represented as N. km ;

[0008] S2: Activate the cutting tool and drive it downwards to the first position via the vertical drive. Then, drive the specimen box longitudinally to reciprocate twice to complete the rolling process on N. 11 Line truncation;

[0009] S3: To be continued 11After the cutting medium is cut, the vertical drive is used to move the cutting tool upward, and then the horizontal drive is used to move the cutting tool to N. 12 Above the line;

[0010] S4: Repeat steps S2 and S3 above until the rolling cut of the cutting medium of layer N1 is completed.

[0011] S5: After the cutting medium of layer N1 is cut, the vertical drive is used to move the cutting blade down to the second position, and then the longitudinal drive is used to move the specimen box longitudinally back and forth to complete the N1 layer through two reciprocating rolling processes. 21 Line truncation;

[0012] S6: Pending N 21 After the cutting medium is cut, the vertical drive is used to move the cutting tool upward, and then the horizontal drive is used to move the cutting tool to N. 22 Above the line;

[0013] S7: Repeat steps S5 and S6 above until the cutting of the cutting medium of layer N2 is completed.

[0014] S8: Repeat steps S2 to S7 above until N is completed. k The cutting of the medium of the layer.

[0015] The rolling cutting test method based on the cutting tool test bench of this invention can better simulate the real cutting conditions, and provides experimental and data support for the optimized design and performance improvement of cutting equipment.

[0016] In some embodiments, the longitudinal reciprocating movement of the specimen box includes a forward stroke and a reverse stroke. Both the forward stroke and the reverse stroke include a start stage, an intermediate stage, and a finish stage. The speed gradually increases in the start stage, the speed remains constant in the intermediate stage, and the speed gradually decreases in the finish stage.

[0017] In some embodiments, when cutting each row of the cutting medium, the position of the cutting tool is corrected and adjusted so that the cutting tool is held at a set height.

[0018] In some embodiments, the test bench includes:

[0019] Base;

[0020] The platform and multiple columns are provided on the base and arranged at intervals along the circumference of the base, and the multiple columns enclose the working space. The platform is fixed to the top of the multiple columns.

[0021] A mobile platform is provided in the work space. The mobile platform is slidably assembled with a plurality of columns and can move up and down relative to the base. The vertical drive is fixed to the support platform and is connected to the mobile platform to drive the mobile platform to move up and down.

[0022] The mounting plate is movably disposed below the moving platform and is used to assemble the cutting tool. The lateral drive is disposed on the moving platform, and the lateral drive is connected to the mounting plate and is used to drive the mounting plate to move laterally.

[0023] The specimen box is movably disposed on the base and located below the mounting plate. The longitudinal drive is disposed on the base and is connected to the specimen box to drive the specimen box to move longitudinally.

[0024] In some embodiments, the mobile platform is provided with a plurality of assembly slots, which are arranged at intervals along the circumference of the mobile platform. A plurality of columns are fitted into the plurality of assembly slots in a one-to-one correspondence. Each column is provided with a vertical guide rail, which extends along the column. Each assembly slot is provided with a first mating part and a second mating part. The first mating part is in rolling or sliding engagement with one side of the vertical guide rail, and the second mating part is in rolling or sliding engagement with the other side of the vertical guide rail.

[0025] In some embodiments, a workbench is provided on the base, and two support frames are provided on the base. The two support frames extend longitudinally along the base and are arranged at a lateral interval along the base. Each support frame is provided with a longitudinal guide rail at its top. The workbench is provided with a longitudinal slider. The workbench is slidably assembled with the two support frames through the longitudinal slider and the longitudinal guide rail. The specimen box is located above the workbench. The longitudinal drive is connected to the workbench and is located between the two support frames. A shielding member is connected between the workbench and the base. The shielding member is retractable so that it can be pulled out when the workbench moves to achieve shielding and protection.

[0026] In some embodiments, the base is provided with a plurality of reinforcing plates, which are respectively disposed in the angle formed by the plurality of columns and the base, and one vertical edge of each reinforcing plate is connected to the column, the bottom edge of each reinforcing plate extends along the longitudinal direction of the base, and the reinforcing plates are provided with a plurality of weight-reducing holes.

[0027] In some embodiments, the bottom of the mobile platform is provided with a transverse guide rail, and the mounting plate is provided with a transverse slider. The mounting plate is slidably assembled with the mobile platform through the transverse guide rail and the transverse slider. The transverse drive includes a motor and a lead screw. The lead screw is rotatably assembled below the mounting plate and threadedly engaged with the mounting plate. The motor is located at the end of the lead screw and is used to drive the lead screw to rotate.

[0028] In some embodiments, the longitudinal drive is a hydraulic telescopic cylinder, and the longitudinal drive is equipped with a first servo valve group and a second servo valve group. The feed flow rate of the first servo valve group is less than the feed flow rate of the second servo valve group. The first servo valve group is used to implement small-process drive of the longitudinal drive, and the second servo valve group is used to implement large-process drive of the longitudinal drive.

[0029] In some embodiments, the specimen box includes a plurality of annular box sections, which are stacked sequentially in a vertical direction to form the specimen box, and adjacent annular box sections are detachably connected so that the height of the specimen box can be adjusted to match the height of the cutting medium. Attached Figure Description

[0030] Figure 1 This is a three-dimensional schematic diagram of the rear side of the test bench according to an embodiment of the present invention.

[0031] Figure 2 This is a three-dimensional schematic diagram of the test bench in an embodiment of the present invention.

[0032] Figure 3 This is a side view of the test bench according to an embodiment of the present invention.

[0033] Figure 4 This is a top view of the test bench according to an embodiment of the present invention.

[0034] Figure 5 This is a side view schematic diagram of the assembly of the vertical drive and cutting tool according to an embodiment of the present invention.

[0035] Figure 6 This is a top view schematic diagram of the mobile platform according to an embodiment of the present invention.

[0036] Figure 7 This is a schematic diagram of the assembly of the base, longitudinal drive, and specimen box according to an embodiment of the present invention.

[0037] Figure 8 yes Figure 7 A side view diagram.

[0038] Figure 9 This is an assembly diagram of the lateral drive and mounting plate according to an embodiment of the present invention.

[0039] Figure 10 This is an assembly diagram of the vertical drive and support platform according to an embodiment of the present invention.

[0040] Figure 11 This is a cross-sectional schematic diagram of the bottom portion of the test bench according to an embodiment of the present invention.

[0041] Figure 12 This is a side view of the specimen box according to an embodiment of the present invention.

[0042] Figure 13 This is a top view of the specimen box according to an embodiment of the present invention.

[0043] Figure 14 This is a cross-sectional schematic diagram of the cutting tool according to an embodiment of the present invention.

[0044] Figure 15 This is a schematic diagram of the assembly of the cutting tool according to an embodiment of the present invention.

[0045] Figure 16 This is a schematic diagram of a hobbing cutter according to an embodiment of the present invention.

[0046] Figure label:

[0047] Test bench 100;

[0048] Base 1; Support frame 11; Longitudinal guide rail 12; Reinforcing plate 13; Anchor bolts 14;

[0049] 2 supporting platforms; 21 lifting lugs;

[0050] Column 3; Vertical guide rail 31;

[0051] Mobile platform 4; First mating part 41; Second mating part 42; Assembly slot 43;

[0052] Vertical drive 5; Vertical load sensor 51; Spherical self-aligning module 52;

[0053] Vertical drive 6;

[0054] Worktable 7; Vertical slider 71; Block 72;

[0055] Lateral drive 8; Motor 81; Lead screw 82; Lateral guide rail 83; Lateral displacement sensor 84;

[0056] Mounting plate 9;

[0057] Specimen box 10; Annular box section 101; Lifting component 102;

[0058] Cutting tool 200; first frame 201; cutting drive 202; second frame 203; cutting tool 204; first coupling 205; second coupling 206; cutting tool sensor 207; transition plate 208. Detailed Implementation

[0059] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0060] like Figures 1 to 16 As shown, the cutting tool test bench 100 of this embodiment of the invention includes a mounting plate 9, a specimen box 10, multiple loading drives, a base 1, a support platform 2, multiple columns 3 and a moving platform 4.

[0061] Mounting plate 9 is located above specimen box 10 and is used to mount cutting tool 200. Specimen box 10 is used to hold cutting medium and has an open top. Multiple load drives are used to drive the relative movement of mounting plate 9 and specimen box 10 so that the operating cutting tool 200 can cut the cutting medium in specimen box 10.

[0062] For example, the test bench 100 can be a frame structure, the specimen box 10 can be installed at the bottom of the test bench 100, the mounting plate 9 can be assembled on the drive end of a portion of the load drive, and the cutting tool 200 can be detachably installed on the mounting plate 9 by bolts or the like. The specimen box 10 can be installed on the drive end of another portion of the load drive. In use, the specimen box 10 can be moved by a portion of the load drive, and the cutting tool 200 can be moved by another portion of the load drive, so that the cutting tool 200 can move according to the displacement law under actual working conditions and achieve the cutting of the cutting medium, which can be coal or rock.

[0063] like Figure 1 and Figure 2 As shown, multiple columns 3 are provided on the base 1 and arranged at intervals along the circumference of the base 1, and the multiple columns 3 enclose the working space. For example, there can be four columns 3, which can be set at the four corners respectively. Each column 3 extends roughly in the vertical direction, and the bottom end of each column 3 can be connected and fixed to the base 1 by welding, fasteners or other means. At this time, the working space is the rectangular space enclosed by the four columns 3.

[0064] Multiple loading drivers can include a vertical driver 5, a horizontal driver 8, and a longitudinal driver 6. For example... Figures 1 to 4 As shown, the support platform 2 can be a rectangular plate, and it can be fixed to the top of multiple columns 3 by welding, fasteners, or other methods. Figure 5 As shown, the vertical drive 5 can be a hydraulic telescopic cylinder. The vertical drive 5 can be fixed at the center of the support platform 2, and the vertical drive 5 extends generally in the vertical direction.

[0065] The mobile platform 4 can also be roughly rectangular. The mobile platform 4 is installed in the work space and can be slidably assembled with at least part of the column 3. The top of the mobile platform 4 can be connected to the vertical drive 5. The mobile platform 4 can be adjusted up and down by extending and retracting the vertical drive 5.

[0066] The mounting plate 9 is movably positioned below the moving platform 4. The lateral drive 8 is located on the moving platform 4, connected to the mounting plate 9, and used to drive the mounting plate 9 to move laterally. For example, ... Figure 9 As shown, the mounting plate 9 can be a rectangular plate, and it can be slidably mounted on the bottom side of the mobile platform 4 along the left and right directions. The lateral drive 8 can be a hydraulic telescopic cylinder or an electric push rod. The lateral drive 8 can be fixed to the bottom side of the mobile platform 4 by fasteners, and the drive end of the lateral drive 8 can be connected and fixed to the mounting plate 9. The left and right positions of the mounting plate 9 can be adjusted by extending and retracting the lateral drive 8.

[0067] The specimen box 10 is movably mounted on the base 1 and located below the mounting plate 9. A longitudinal drive 6 is mounted on the base 1, connected to the specimen box 10, and used to drive the specimen box 10 to move longitudinally. For example, as... Figure 7 and Figure 8 As shown, the specimen box 10 can be a rectangular box, and the longitudinal drive 6 can be a hydraulic telescopic cylinder. The longitudinal drive 6 can be mounted on the base 1 and extend along the front-to-back direction. The specimen box 10 can be fixed to the drive end of the longitudinal drive 6. In use, the specimen box 10 can be moved back and forth by the longitudinal drive 6.

[0068] Based on the aforementioned test bench 100, the rolling cut test method of this embodiment of the invention includes the following steps:

[0069] S1: Divide the cutting medium into layers N1, N2, ... N in a top-to-bottom order. k The cutting medium is divided into layers, with each layer consisting of rows 1 through m along its transverse direction. Each row of the cutting medium in each layer is represented by N. km .

[0070] For example, the cutting medium can be roughly rectangular in shape, and the cutting medium can be divided into multiple layers (two layers, three layers, four layers, etc.), with the thickness of each layer being 5 to 10 millimeters.

[0071] The lateral direction can be left-right, and the cutting medium can be divided into multiple rows (three, four, five, etc.) along the left-right direction. Through multiple rows and multiple layers of division, the cutting medium can be divided into multiple strips arranged in a matrix, and each strip extends along the front-back direction (the driving direction of the longitudinal drive 6). Optionally, the length of each row of cutting medium can be 1500mm.

[0072] S2: Start the cutting tool 200, and drive the cutting tool 200 down to the first position via the vertical drive 5. Then drive the specimen box 10 longitudinally to reciprocate through the longitudinal drive 6 to complete the N-type rolling process by reciprocating twice. 11 Line cutting.

[0073] For example, such as Figure 16 As shown, the cutting tool 200 can be a cutting roller type tool 204. Before the test, the cutting tool 200 can be installed on the mounting plate 9. Then, the hydraulic motor of the rolling cutting device can be connected to the hydraulic system, so that the roller of the rolling cutting device and the blade-shaped and pick-shaped cutting teeth installed thereon can be driven to rotate by the hydraulic motor.

[0074] Then, the vertical drive 5 can be extended. At this time, the cutting tool 200 will move downwards until it reaches the first position (contacting the upper surface of the cutting medium and then moving downwards by a cutting depth, generally 5-10mm, which is the interface between layers N1 and N2). It should be noted that the initial position of the cutting tool 200 should be located at N... 11 Directly above the row, N 11 The row can be located on the far left of the cutting medium.

[0075] Finally, the longitudinal drive 6 can be extended first. At this time, the specimen box 10 will translate in the direction from back to front, and the rotating cutting tool 200 will complete the cutting of N. 11 One rolling cut is performed. After one rolling cut is completed, the longitudinal drive 6 can be controlled to retract. At this time, the specimen box 10 will translate in the direction from front to back, and the rotating cutting tool 200 will complete the cutting of N. 11 The line is subjected to secondary rolling and cutting.

[0076] S3: To be continued 11 After the cutting medium is cut, the vertical drive 5 moves the cutting tool 200 upward, and then the horizontal drive 8 moves the cutting tool 200 to N. 12 Above the line.

[0077] Specifically, when the cutting tool 200 completes the cutting of N in a front-to-back direction... 11 After the cutting medium is cut, the vertical drive 5 can be controlled to retract and return to its pre-cutting position, and the longitudinal drive 6 can be controlled to retract and return to its initial position. Then, the transverse drive 8 can be controlled to move, thereby causing the cutting tool 200 to move to the right (the cutting tool 200 can be moved laterally by approximately 15-30 mm), thus moving the cutting tool 200 to N. 12 Directly above the cutting medium of the line.

[0078] S4: Repeat steps S3 and S4 above until the cutting of the N1 layer of the cutting medium is completed. Specifically, by continuously and periodically manipulating the vertical drive 5, longitudinal drive 6, and transverse drive 8, the N1 layer can be cut sequentially. 11 row, N 12 row, N 13 row, N 14 Line...N 1m By cutting the cutting medium in the row, the cutting medium of the entire N1 layer can be cut.

[0079] S5: After the cutting medium of layer N1 is cut, the vertical drive 5 drives the cutting tool 200 to move down to the second position, and then the longitudinal drive 6 drives the specimen box 10 to move longitudinally back and forth to complete the N1 layer by reciprocating rolling twice. 21 The line is cut off. Specifically, the second position can be a set position lower than the first position, and the second position can be one floor height (5-10mm) lower than the first position. N 21 The specific truncation process can be compared with the above-described N1 layer N 11 The same applies here, so I won't repeat it again.

[0080] S6: Pending N 21 After the cutting medium is cut, the vertical drive 5 moves the cutting tool 200 upward, and then the horizontal drive 8 moves the cutting tool 200 to N. 22 Above the line.

[0081] Specifically, when the cutting tool 200 completes the cutting of N in a front-to-back direction... 21 After the cutting medium is cut, the vertical drive 5 can be controlled to retract and return to its pre-cutting position, and the longitudinal drive 6 can be controlled to retract and return to its initial position. Then, the transverse drive 8 can be controlled to move, thereby causing the cutting tool 200 to move to the right (the cutting tool 200 can be moved laterally by approximately 15-30 mm), thus moving the cutting tool 200 to N. 22 Directly above the cutting medium of the line.

[0082] S7: Repeat steps S6 and S7 until the cutting of the N2 layer of the cutting medium is completed. Specifically, by continuously and periodically manipulating the vertical drive 5, longitudinal drive 6, and transverse drive 8, the N2 layer can be cut sequentially. 21 row, N 22 row, N 23 row, N 24 Line...N 2m By cutting the cutting medium in the row, the cutting medium of the entire N2 layer can be cut.

[0083] S8: Repeat steps S3 to S8 above until N is completed.k Cutting of the cutting medium of the N2 layer. Specifically, after the cutting of the cutting medium of the N2 layer is completed, the cutting tool 200 can be moved down by a set displacement by the vertical drive 5, so as to complete the cutting of the cutting medium of the N3 layer. The above steps are repeated until the cutting of the cutting medium of all layers is completed in the direction from top to bottom.

[0084] The cutting tool 200 test method of this invention can simulate the cutting process of a cutting roller cutter by moving the mounting plate 9 and the specimen box 10 through multiple loading drives. The simulation process can better match the real working conditions, thereby ensuring the validity of the test. Secondly, the cutting roller cutter works intermittently, and each reciprocating motion can complete two rolling cuts, which improves the efficiency of the cutting test.

[0085] In some embodiments, the longitudinal reciprocating movement of the specimen box 10 includes a forward stroke and a reverse stroke. Both the forward stroke and the reverse stroke include a start stage, an intermediate stage, and a finish stage. The speed gradually increases in the start stage, the speed remains constant in the intermediate stage, and the speed gradually decreases in the finish stage.

[0086] Specifically, the forward stroke can be the movement of the specimen box 10 from back to front. The forward stroke can be divided into three stages: the beginning stage, the middle stage, and the end stage. The beginning stage of the forward stroke can be an acceleration stage, where the moving speed of the specimen box 10 gradually increases to the required speed. The middle stage of the forward stroke can be a constant speed stage, where the moving speed of the specimen box 10 remains constant. The end stage of the forward stroke can be a deceleration stage, where the moving speed of the specimen box 10 gradually decreases. This ensures that the operation process matches the actual working conditions and also provides a buffer for the cutting operation, avoiding instability that could easily occur due to high speeds at the beginning or end.

[0087] Similarly, the reverse stroke can be the stroke of the specimen box 10 moving from front to back. The reverse stroke can also be divided into three stages: the beginning stage, the middle stage, and the end stage. The motion process of each stage of the reverse stroke is similar to that of the forward stroke, and will not be described in detail here.

[0088] In some embodiments, when cutting each row of cutting media, the position of the cutting tool 200 is corrected and adjusted to keep the cutting tool 200 at a set height. Specifically, when the vertical drive 5, the horizontal drive 8, and the longitudinal drive 6 are hydraulic telescopic cylinders, the test bench 100 can be equipped with a hydraulic system, which can also have a self-depressurization function. For example, a pressure relief valve can be installed on the corresponding hydraulic pipeline. Taking the vertical drive 5 as an example, during the test, due to the shape of the cutting teeth of the cutting tool 200 and the discontinuous arrangement on the roller (hob), the cutting tool 200 and the cylinder will be impacted. When the impact load exceeds the set maximum normal pressure, the vertical cylinder will automatically depressurize for protection, thereby protecting the tool 204 from abnormal damage.

[0089] Secondly, the hydraulic system can be equipped with a servo device, which can be equipped with a pressure sensor and a pressure relief valve. Thus, the cutting tool 200 can automatically release pressure when subjected to large pressure, and automatically replenish pressure through the hydraulic system when the hydraulic pressure is low, so that the cutting tool 200 can always be kept at the corresponding height position, ensuring the stability of cutting.

[0090] In some embodiments, the vertical drive 5, the horizontal drive 8, and the longitudinal drive 6 are all equipped with a detection module, which includes at least one of the following: a load sensor, a displacement sensor, a speed sensor, and a torque sensor.

[0091] For example, such as Figure 5 As shown, the vertical drive 5 can be equipped with a vertical load sensor 51, which can be installed between the bottom of the vertical drive 5 and the moving platform 4. The magnitude of the driving force applied by the vertical drive 5 can be monitored by the vertical load sensor 51.

[0092] Optionally, such as Figure 5 As shown, the vertical drive 5 can also be configured with a spherical self-aligning module 52. The spherical self-aligning module 52 can be installed between the vertical load sensor 51 and the moving platform 4. The spherical self-aligning module 52 can be a spherical self-aligning bearing or other spherical self-aligning device, thereby effectively eliminating the influence of lateral or longitudinal movement on the lateral drive 8 and the detection module.

[0093] Specifically, the vertical drive 5 mainly consists of a vertical servo cylinder, a ball joint, and a 1000kN load sensor. The cutting depth of the rotary cutting device is controlled by the displacement sensor of the vertical servo cylinder, and the radial load of the rotary cutting device is controlled by the 1000kN load sensor of the vertical drive 5.

[0094] For example, such as Figure 9As shown, the lateral drive 8 can be equipped with a lateral displacement sensor 84, specifically a Hall effect displacement sensor, a photoelectric displacement sensor, etc. The lateral displacement sensor 84 can include a fixed part and a moving part. The fixed part can be fixed to the bottom side of the moving platform 4, and the moving part can be fixed to the mounting plate 9. When the mounting plate 9 moves, the relative positions of the fixed part and the moving part will change. By this position change, the moving position of the mounting plate 9 can be monitored, thereby enabling the position adjustment and control of the cutting tool 200 on the mounting plate 9.

[0095] Specifically, the transverse drive 8 mainly consists of a servo motor, a 200kN load sensor, a guide transmission platform, a lead screw pair, a linear guide rail, and four sets of guide ball bearing sliders. The cutting width of the rotary cutting device is controlled by the encoder of the servo motor, and the axial load of the rotary cutting device is measured by the 200kN load sensor of the transverse linear feed device.

[0096] For example, a sensor bracket is connected to the lower part of the longitudinal drive 6 by screws. The magnetic displacement sensor can be fixed inside the sensor bracket by screws and mounting clamps, thereby enabling displacement detection of the longitudinal drive 6.

[0097] Specifically, the longitudinal drive unit 6 mainly consists of a longitudinal loading cylinder, a 400kN load sensor, a ball joint, a bearing plate, a shear box, a longitudinal mounting base, a base, a feed seat, and a protective cover. The longitudinal loading cylinder pushes the shear box to move longitudinally along the heavy-duty linear guide rail, and the tangential load of the roller cutting teeth in the cutting device is detected by the 400kN load sensor housing.

[0098] It is understood that in some other embodiments, the cutting tool 200 may be equipped with a cutting device position and cutting depth (vertical cylinder displacement) displacement sensor; a drum speed (converted into cutter head linear velocity) sensor, a drum torque sensor, etc. Through the sensors of each detection module, signal acquisition, amplification, A / D conversion, data processing, etc. can be realized, and then the changes of various parameters of the test bench 100 can be displayed in real time.

[0099] In some embodiments, the cutting tool test bench 100 may be equipped with a hydraulic system, which includes multiple pump units, each pump unit being connected to one of the vertical drive 5, the horizontal drive 8, the longitudinal drive 6, and the cutting tool 200 and used to realize independent driving of the vertical drive 5, the horizontal drive 8, the longitudinal drive 6, and the cutting tool 200.

[0100] Specifically, the hydraulic system may include a combined hydraulic pump station, a vertical (normal pressure) cylinder pump motor unit, a stone shaft moving slide horizontal longitudinal feed pump motor unit, a tool holder horizontal transverse feed motor, a drum power unit pump motor unit, an oil tank, an oil cooler, and flexible and rigid rubber hoses, etc.

[0101] The hydraulic system adopts a modular hydraulic station with separate pumps and separate oil supply modes. Each oil pump motor unit (pump unit) can be controlled independently, allowing for flexible selection of one or more pump units to operate according to the test requirements, saving energy and reducing system heat generation while meeting test needs.

[0102] Optionally, the hydraulic system may also be equipped with pressure sensors, temperature sensors, level gauges, and alarm devices. The hydraulic system may also be equipped with a filtration device, so that the oil suction, pressure oil, and return oil during the operation of the hydraulic system can all pass through the filtration device, thereby ensuring the cleanliness of the hydraulic oil and the long-term stable operation of the servo system.

[0103] In some embodiments, the mobile platform 4 is provided with a plurality of assembly slots 43, which are arranged at intervals along the circumference of the mobile platform 4. A plurality of columns 3 are fitted into the plurality of assembly slots 43 in a corresponding manner. Each column 3 is provided with a vertical guide rail 31, which extends along the column 3. Each assembly slot 43 is provided with a first mating part 41 and a second mating part 42. The first mating part 41 is rolled or slidably mated with one side of the vertical guide rail 31, and the second mating part 42 is rolled or slidably mated with the other side of the vertical guide rail 31.

[0104] For example, such as Figure 1 As shown, each column 3 can be equipped with a vertical guide rail 31. The cross-section of the vertical guide rail 31 can be triangular or rectangular, such as... Figure 6 As shown, the mobile platform 4 can be roughly rectangular. Each of the four corners of the mobile platform 4 can be provided with an assembly slot 43. The assembly slot 43 can be a rectangular slot. Each assembly slot 43 includes two vertically arranged slot walls. The first mating part 41 can be installed on one of the slot walls, and the other mating part can be installed on the other slot wall.

[0105] It should be noted that both the first mating part 41 and the second mating part 42 may include a rolling guide block (similar to a roller). Thus, the first mating part 41 and the second mating part 42 can respectively achieve rolling engagement with the vertical guide rail 31, which on the one hand facilitates the upward and downward sliding adjustment of the mobile platform 4, and on the other hand enhances the limiting and constraint effect, prevents the mobile platform 4 from rotating in the working space, and improves the stability of movement.

[0106] In some embodiments, such as Figure 7 As shown, a workbench 7 is provided on the base 1, and two support frames 11 are provided on the base 1. Both support frames extend along the longitudinal direction (front and back direction) of the base 1 and are spaced apart along the transverse direction (left and right direction) of the base 1. Each support frame 11 can be provided with a longitudinal guide rail 12 on its top. The longitudinal guide rail 12 can be fixed to the support frame 11 by bolts.

[0107] like Figure 11 As shown, the worktable 7 is provided with a longitudinal slider 71. There can be two longitudinal sliders 71. The two longitudinal sliders 71 can be arranged at intervals in the left and right directions. Each longitudinal slider 71 can slide and engage with the corresponding longitudinal guide rail 12. That is, the worktable 7 is slidably assembled with the two support frames 11 through the longitudinal sliders 71 and the longitudinal guide rail 12.

[0108] Optionally, such as Figure 11 As shown, the base 1 can be fixed to the foundation by anchor bolts 14.

[0109] like Figure 8 As shown, the specimen box 10 is positioned above the workbench 7. The specimen box 10 can be detachably mounted on the workbench 7 using fasteners such as screws. The cylinder of the longitudinal drive 6 can be connected and fixed to the workbench 7, and the longitudinal drive 6 can be fitted between two support frames 11. This provides a protective effect.

[0110] like Figure 11 As shown, a shield 72 can be connected between the worktable 7 and the base 1. The shield 72 is retractable and can be extended by pulling when the worktable 7 moves to provide shielding and protection. Specifically, the shield 72 may include a stainless steel protective cover located above the longitudinal drive 6 and protective baffles located on the left and right sides of the worktable 7. When the worktable 7 moves under the action of the longitudinal drive 6, the stainless steel protective cover and protective baffles can be extended and retracted with the back and forth movement of the worktable 7, so as to always provide a protective effect.

[0111] Optionally, the shield 72 may also include a top plate, which can be fixed to the outermost side of the base 1 by screws or the like, so that it can cooperate with the stainless steel protective cover and protective baffle to form an overall protection, avoiding the interference of debris and sewage generated during the cutting process of the longitudinal drive 6.

[0112] In some embodiments, the longitudinal drive 6 is a hydraulic telescopic cylinder, equipped with a first servo valve group and a second servo valve group. The feed flow rate of the first servo valve group is less than that of the second servo valve group. The first servo valve group is used to achieve small-scale driving of the longitudinal drive 6, and the second servo valve group is used to achieve large-scale driving of the longitudinal drive 6. Thus, in the rotary cutting test mode, the feed of the cutting medium in the forward and backward directions can be controlled by the small-flow servo valve (first servo valve group), thereby achieving precise control.

[0113] In some embodiments, such as Figures 1 to 3As shown, the base 1 is provided with multiple reinforcing plates 13, which are correspondingly positioned within the angle formed by the multiple columns 3 and the base 1. One vertical edge of each reinforcing plate 13 is connected to a column 3, and the bottom edge of each reinforcing plate 13 extends longitudinally along the base 1. Therefore, the reinforcing plates 13 can support the columns 3 in the front-back direction, ensuring high structural strength of the columns 3 in the front-back direction and meeting the adjustment requirements of the longitudinal drive 6.

[0114] Optionally, the reinforcing plate 13 is provided with multiple weight-reducing holes. These holes can be arranged through topology optimization design, which can ensure the structural strength of the reinforcing plate 13 while saving materials and reducing costs.

[0115] In some embodiments, such as Figure 9 As shown, the bottom of the mobile platform 4 is provided with a horizontal guide rail 83. There can be two horizontal guide rails 83. Both horizontal guide rails 83 can extend along the left and right direction and be arranged at intervals in the front and back direction. The mounting plate 9 can be provided with a horizontal slider. There can also be two horizontal sliders. The two horizontal sliders are respectively slidably assembled on the corresponding horizontal guide rails 83. That is, the mounting plate 9 is slidably assembled with the mobile platform 4 through the horizontal guide rails 83 and the horizontal sliders.

[0116] The lateral drive 8 includes a motor 81 and a lead screw 82. The motor 81 can be a hydraulic motor, which can be controlled by a hydraulic system. The lead screw 82 is rotatably mounted below the mounting plate 9 and threadedly engaged with the mounting plate 9. For example, the bottom of the moving platform 4 can be provided with two bases, and the lead screw 82 can be rotatably mounted on the two bases with bearings. The mounting plate 9 can be provided with threaded holes, and the lead screw 82 can be threadedly mounted on the mounting plate 9. The motor 81 can be connected and fixed to the end of the lead screw 82 through a coupling. In use, the motor 81 can drive the lead screw 82 to rotate, thereby realizing the adjustment of the left and right position of the mounting plate 9.

[0117] Optionally, such as Figure 10 As shown, the top of the vertical drive 5 can be connected to the pipe joint via a sealing ring, and the support platform 2 can be connected and fixed to the cylinder boss of the vertical drive 5 via bolts. The moving platform 4 can be equipped with multiple lifting lugs 21 (lifting screws), which facilitate the lifting of the moving platform 4, thereby facilitating the movement of the test bench 100.

[0118] In some embodiments, such as Figure 12As shown, the specimen box 10 includes multiple annular box sections 101, which can be rectangular. These annular box sections 101 are stacked sequentially along the vertical direction to form the specimen box 10, and adjacent annular box sections 101 can be detachably connected and fixed with bolts. Therefore, during the test, the height of the specimen box 10 can be adjusted to match the height of the cutting medium; that is, as the height of the cutting medium decreases, the upper annular box sections 101 can be disassembled sequentially.

[0119] like Figure 13 As shown, each annular box 101 is provided with a lifting member 102 on its outer periphery. The lifting member 102 can be a lifting eye bolt. Multiple lifting members 102 can be provided. Multiple lifting members 102 can be arranged at intervals along the circumference of the annular box 101. The setting of the lifting member 102 facilitates the lifting of the annular box 101, thereby facilitating installation and disassembly.

[0120] Optionally, such as Figure 13 As shown, each annular box 101 may be provided with a tongue and groove structure. The tongue and groove structure can realize the insertion and mating of two adjacent annular box 101, thereby enhancing the stability and strength of the structure.

[0121] In some embodiments, such as Figure 14 and Figure 15 As shown, the cutting tool 200 includes a first frame 201, a cutting drive 202, a cutting tool 200, a first coupling 205, a second coupling 206, and a tool sensor 207. The first frame 201 is detachably mounted below the mounting plate 9. The cutting drive 202 and the second frame 203 are located on the first frame 201. The tool 204 is rotatably mounted in the second frame 203. The first coupling 205, the tool sensor 207, and the second coupling 206 are connected between the cutting drive 202 and the second frame 203. The first coupling 205 is connected between the cutting drive 202 and the tool sensor 207, and the second coupling 206 is connected between the shafts of the tool sensor 207 and the tool 204.

[0122] Specifically, the cutting drive 202 can be a roller motor 81, the first coupling 205 can be a spline-double key coupling, the second coupling 206 can be a double key coupling, and the tool sensor 207 can be a torque sensor.

[0123] The roller motor drives the roller to rotate through two sets of couplings and a torque and speed sensor, and controls the roller's rotation speed and torque through the torque and speed sensor.

[0124] The outer side of the roller motor 81 can be connected to the hydraulic system via mounting pipe fittings and flanges. The upper part of the first frame 201 can be bolted to the transition plate 208 and mounting plate 9. One side of the first frame 201 can be bolted to and fixed to the roller motor 81. The output splined shaft of the roller motor 81 is connected to the inner splined end of the first coupling 205 for torque transmission. The keyed side of the first coupling 205 is connected to the tool sensor 207, which is bolted to the torque sensor bracket. The upper part of the torque sensor bracket can be bolted to the transition plate 208 and mounting plate 9. The other end of the tool sensor 207 is connected to the second coupling 206. The other end of the second coupling 206 can be connected to the shaft of the tool 204.

[0125] The cutting tool 200 may include a tool 204 and a second holder 203. The tool 204 can be rotatably mounted in the second holder 203 via two shafts, and the tool 204 can be connected to the corresponding shaft via two flat keys. A single-row tapered roller bearing and an end cap can be mounted on the second holder 203. The shaft of the tool 204 is rotatably mounted in the single-row tapered roller bearing and the end cap, wherein the outer end cap can be fixed with a plug. This structure enables the driving of the cutting tool 200 and the detection of its torque.

[0126] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0127] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0128] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0129] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0130] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0131] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A rolling cutting test method based on a cutting tool test bench, characterized in that, The test bench includes a mounting plate, a specimen box, a vertical drive, a horizontal drive, and a longitudinal drive. The mounting plate is located above the specimen box and is used to assemble the cutting tool. The specimen box is used to place the cutting medium and has an open top. The vertical drive, the horizontal drive, and the longitudinal drive are used to drive the relative movement of the mounting plate and the specimen box. The rolling cut test method includes the following steps: S1: Divide the cutting medium into layers N1, N2, ... N in a top-to-bottom order. k The cutting medium is divided into layers, with each layer consisting of rows 1…m along its transverse direction, and each row of the cutting medium in each layer is represented as N. km ; S2: Activate the cutting tool and drive it downwards to the first position via the vertical drive. Then, drive the specimen box longitudinally to reciprocate twice to complete the rolling process on N. 11 Line truncation; S3: Pending N 11 After the cutting medium is cut, the vertical drive is used to move the cutting tool upward, and then the horizontal drive is used to move the cutting tool to N. 12 Above the line; S4: Repeat steps S2 and S3 above until the rolling cut of the cutting medium of layer N1 is completed. S5: After the cutting medium of layer N1 is cut, the vertical drive is used to move the cutting blade down to the second position, and then the longitudinal drive is used to move the specimen box longitudinally back and forth to complete the N1 layer through two reciprocating rolling processes. 21 Line truncation; S6: Pending N 21 After the cutting medium is cut, the vertical drive is used to move the cutting tool upward, and then the horizontal drive is used to move the cutting tool to N. 22 Above the line; S7: Repeat steps S5 and S6 above until the cutting of the cutting medium of layer N2 is completed. S8: Repeat steps S2 to S7 above until N is completed. k The cutting of the medium of the layer.

2. The rolling cutting test method based on a cutting tool test bench according to claim 1, characterized in that, The longitudinal reciprocating movement of the specimen box includes a forward stroke and a reverse stroke. Both the forward stroke and the reverse stroke include a start stage, a middle stage, and a finish stage. The speed gradually increases in the start stage, the speed remains constant in the middle stage, and the speed gradually decreases in the finish stage.

3. The rolling cutting test method based on a cutting tool test bench according to claim 2, characterized in that, When cutting each row of the cutting medium, the position of the cutting tool is corrected and adjusted so that the cutting tool is kept at a set height.

4. The rolling cutting test method based on a cutting tool test bench according to any one of claims 1-3, characterized in that, The test bench includes: Base; The platform and multiple columns are provided on the base and arranged at intervals along the circumference of the base, and the multiple columns enclose the working space. The platform is fixed to the top of the multiple columns. A mobile platform is provided in the work space. The mobile platform is slidably assembled with a plurality of columns and can move up and down relative to the base. The vertical drive is fixed to the support platform and is connected to the mobile platform to drive the mobile platform to move up and down. The mounting plate is movably disposed below the moving platform and is used to assemble the cutting tool. The lateral drive is disposed on the moving platform, and the lateral drive is connected to the mounting plate and is used to drive the mounting plate to move laterally. The specimen box is movably disposed on the base and located below the mounting plate. The longitudinal drive is disposed on the base and is connected to the specimen box to drive the specimen box to move longitudinally.

5. The rolling cutting test method based on a cutting tool test bench according to claim 4, characterized in that, The mobile platform is provided with multiple assembly slots, which are arranged at intervals along the circumference of the mobile platform. Multiple columns are fitted into the multiple assembly slots in a one-to-one correspondence. Each column is provided with a vertical guide rail, which extends along the column. Each assembly slot is provided with a first mating part and a second mating part. The first mating part rolls or slides with one side of the vertical guide rail, and the second mating part rolls or slides with the other side of the vertical guide rail.

6. The rolling cutting test method based on a cutting tool test bench according to claim 4, characterized in that, The base is equipped with a worktable and two support frames. Both support frames extend longitudinally along the base and are spaced laterally along the base. Each support frame has a longitudinal guide rail at its top. The worktable has a longitudinal slider. The worktable is slidably assembled with the two support frames via the longitudinal slider and the longitudinal guide rail. The specimen box is located above the worktable. The longitudinal drive is connected to the worktable and located between the two support frames. A shielding member is connected between the worktable and the base. The shielding member is retractable and can be extended by pulling when the worktable moves to provide shielding and protection.

7. The rolling cutting test method based on a cutting tool test bench according to claim 4, characterized in that, The base is provided with multiple reinforcing plates, which are arranged one-to-one within the angle formed by the multiple columns and the base. Each reinforcing plate has a vertical edge connected to a column, and the bottom edge of each reinforcing plate extends along the longitudinal direction of the base. The reinforcing plates are provided with multiple weight-reducing holes.

8. The rolling cutting test method based on a cutting tool test bench according to claim 4, characterized in that, The bottom of the mobile platform is provided with a horizontal guide rail, and the mounting plate is provided with a horizontal slider. The mounting plate is slidably assembled with the mobile platform through the horizontal guide rail and the horizontal slider. The horizontal drive includes a motor and a lead screw. The lead screw is rotatably assembled below the mounting plate and threadedly engaged with the mounting plate. The motor is located at the end of the lead screw and is used to drive the lead screw to rotate.

9. The rolling cutting test method based on a cutting tool test bench according to claim 4, characterized in that, The longitudinal drive is a hydraulic telescopic cylinder, and the longitudinal drive is equipped with a first servo valve group and a second servo valve group. The feed flow rate of the first servo valve group is less than the feed flow rate of the second servo valve group. The first servo valve group is used to realize the small-process drive of the longitudinal drive, and the second servo valve group is used to realize the large-process drive of the longitudinal drive.

10. The rolling cutting test method based on a cutting tool test bench according to claim 4, characterized in that, The specimen box includes multiple annular sections, which are stacked sequentially in the vertical direction to form the specimen box. Adjacent annular sections are detachably connected so that the height of the specimen box can be adjusted to match the height of the cutting medium.

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