Cutting apparatus and method for testing a sample for split tensile strength of a cement seam

Abstract

The cutting device for testing the tensile strength of a glued joint split sample comprises a reference base, a clamp part, a cutting part, a support part and a fixing seat. The reference base is in the form of a flat plate and has a plurality of grooves arranged in parallel on the upper surface. The clamp part is fixed on the reference base and used for fastening the sample. The cutting part is used for cutting the sample. When the sample is cut, the cutter rotates around its own axis and moves along the direction in which the groove extends with the help of the support part. The first motor for driving the cutter to rotate is located above the cutter. The support part is fixed on the reference base and comprises two horizontal crossbars and a screw rod. The crossbars and the screw rod are arranged on a crossbeam. The middle section of the crossbeam is in the form of a step and the height of the middle section is higher than that of the connecting ends on both sides of the crossbeam. The clamp part and the support part are fixed on the reference base through the fixing seat. The sample obtained by using the device provided in the application has a high qualification rate.

Description

Technical Field

[0001] This invention belongs to the technical field of test sample preparation, specifically relating to cutting equipment and cutting method for test specimens of splitting tensile strength of adhesive joints. Background Technology

[0002] The splitting tensile strength test for adhesive joints is an effective evaluation method for guiding the assessment of the bonding effect of adhesive joints in precast concrete segments, and it has been incorporated into the national standard "Epoxy Adhesives for Precast Concrete Segment Assembly" (draft for comments). The test specimen used is a cylinder with a diameter of (25±0.1) mm and a length of (50±0.1) mm. This cylinder is formed by bonding two concrete blocks together with adhesive, with the adhesive layer located on the axial section of the cylinder and exhibiting a consistent thickness in multiple locations. To efficiently obtain this cylindrical test specimen, a common sampling method is core drilling, which involves drilling from a larger cross-sectional specimen of the adhesive joint using a drill bit with an inner diameter of (25±0.1) mm. Typically, the height of this larger cross-sectional specimen is not less than 50 mm, meaning the length of the core sample obtained is longer than that of the standard test specimen. Therefore, before testing the splitting tensile strength of the adhesive joint, the specimen obtained from the core sampling needs to be further processed to obtain a standard test specimen.

[0003] Mechanical cutting is the most economical and practical method available for laboratory reprocessing. Extensive literature has been published on concrete cutting equipment. However, comprehensive analysis reveals that the concrete specimens cut by such equipment are significantly larger than the size of the splitting tensile strength (SMT) test specimens. When using existing equipment to cut SMT specimens, the specimens are too small to be effectively fixed. Furthermore, existing equipment for cutting large concrete specimens often fails to achieve the required accuracy of ±0.1 mm, resulting in significant wear on the specimens during cutting. Additionally, existing equipment uses high-speed cutting blades to efficiently cut large concrete specimens, requiring manual advancement of the specimen into the cutting area. This process easily leads to end-face damage and incompleteness, resulting in unusable, poorly formed test specimens. Summary of the Invention

[0004] To address the aforementioned issue of mechanically cutting specimens after core sampling to effectively obtain standard specimens suitable for testing the splitting tensile strength of adhesive joints, this application proposes a cutting device and method for testing the splitting tensile strength of adhesive joints.

[0005] The cutting equipment for the splitting tensile strength test specimen of the adhesive joint includes:

[0006] The reference base is flat and has several parallel grooves on its upper surface.

[0007] The clamping part, fixed on the reference base, includes three or more concentric arc-shaped jaws that clamp the sample in a concentric manner.

[0008] The cutting section is mounted on the crossbar and lead screw of the support section. The cutter head of the cutting section is configured such that its axis is perpendicular to the direction of extension of the groove, and when cutting the sample, the cutter head rotates about its own axis and moves along the direction of extension of the groove with the help of the support section; the first motor that drives the cutter head to rotate is located above the cutter head.

[0009] The support unit, fixed to the reference base, includes two horizontal crossbars arranged parallel to the extension direction of the groove and a lead screw located between the two crossbars. The two ends of the crossbars and the lead screw are respectively mounted on a support plate. The support plate is mounted on a crossbeam. The crossbeam includes a middle section and connecting ends located on both sides of the middle section. The middle section and the connecting ends are stepped, and the height of the middle section is higher than that of the connecting ends. The support plate is mounted on the middle section of the crossbeam. Two vertical rods pass through the connecting ends, and a vertical threaded rod is located between the two vertical rods and threadedly connected to the crossbeam.

[0010] The two ends of the clamping part are fixed to the reference base by the fixing base, and the threaded rod and the vertical rod of the support part are fixed to the reference base by the fixing base.

[0011] In one embodiment, the distance between the grooves provided on the reference base includes A1, A2 and A3 that decrease sequentially, and the grooves are arranged on the reference base in a cyclical manner according to A1, A3 and A2.

[0012] In one embodiment, the fixing seat includes a circular cross-section groove in the middle and ears at both ends, with threaded fasteners vertically passing through the ears, and the minimum distance between two threaded fasteners is equal to A1 or A3 or A2.

[0013] The two threaded fasteners of the fixing seat that fixes the clamp part are located in the same groove or in adjacent grooves;

[0014] The two threaded fasteners of the fixing seat that fixes the support are located in the same groove or in adjacent grooves.

[0015] In one embodiment, the upper ends of the two vertical rods of the support are fixedly connected to a support connecting plate. The support connecting plate is provided with a through hole, and a fixing ring is coaxially connected to the through hole. The inner wall of the fixing ring is provided with a thread, and the threaded rod of the support is threadedly connected to the fixing ring.

[0016] In one embodiment, a knob is connected to the upper end of the threaded rod at one end of the lead screw of the support portion;

[0017] The lower end of each threaded rod is connected to a first bevel gear with a vertical axis;

[0018] The support also includes a transmission rod connected to the lower surface of the reference base via a bearing seat, and each end of the transmission rod is connected to a second bevel gear on a horizontal axis.

[0019] The first bevel gear and the second bevel gear located at the same end of the lead screw are meshed together.

[0020] In one embodiment, the cutting portion further includes:

[0021] The main body of the cutting equipment is mounted on the crossbar and the lead screw. The main body of the cutting equipment is equipped with a through hole for the crossbar to pass through and a fixing ring that is threaded to the lead screw. The inner wall of the fixing ring is threaded.

[0022] The transmission body is connected to the lower part of the cutting equipment body, with one end connected to the cutter head and the other end connected to the first pulley;

[0023] The first motor that drives the cutter head to rotate is mounted above the main body of the cutting equipment, and the output shaft of the first motor is connected to the second pulley;

[0024] A transmission belt is provided between the first pulley and the second pulley.

[0025] In one embodiment, one end of the lead screw of the support is connected to the output shaft of a second motor, and the second motor is mounted on the crossbeam.

[0026] In one embodiment, a protective cover is provided on the edge of the reference base facing upwards.

[0027] In one embodiment, a dust collection hood is connected to the reference base, and a vacuum cleaner is connected to the outside of the dust collection hood to absorb the cutting dust.

[0028] This application also provides a method for cutting a test specimen for splitting tensile strength of an adhesive joint, carried out on the cutting equipment described above, comprising:

[0029] The sample is mounted and fixed in the clamp.

[0030] Adjust the position of the clamping part so that the plane to be cut of the sample is on the same plane as the cutting edge of the cutter head;

[0031] Adjust the height of the crossbeam so that the lowest point of the cutter head is above the sample;

[0032] Start the first motor and the second motor to cut the sample.

[0033] The cutting device for the splitting tensile strength test specimen of adhesive joint provided in this invention includes: a reference base, which is flat and has several grooves arranged parallel to each other on its upper surface; a clamping part, fixed on the reference base for securing the specimen; a cutting part, in which the cutter head rotates around its own axis and moves along the direction of extension of the grooves with the aid of the supporting part when cutting the specimen; a first motor that drives the cutter head to rotate is located above the cutter head; a supporting part, fixed on the reference base, including two horizontal crossbars and a lead screw, the crossbars and the lead screw being mounted on a crossbeam, the middle section of the crossbeam and its connecting ends on both sides being stepped, and the height of the middle section being higher than the connecting ends; and a fixing seat, the two ends of the clamping part being fixed on the reference base through the fixing seat, and the supporting part also being fixed on the reference base through the fixing seat. This application securely fixes the clamping and cutting parts to the reference base using a fixing seat. The clamping jaws of the clamping part centripetally tighten the sample, and the positional relationship between the clamping and cutting parts can be adjusted according to the sample size to suit cutting. The crossbeam has high structural rigidity and drives the cutter head to a low center of gravity, thereby ensuring the accuracy of the tool feed and cutting. Furthermore, the tool automatically feeds during the cutting process, with high feed accuracy, resulting in a complete and relatively smooth end face after cutting, which can effectively form test specimens.

[0034] Traditional cutting equipment is used for cutting test specimens for splitting tensile strength of adhesive joints. The large size of the connecting and fixing parts makes it unsuitable for long-distance use and the collection and handling of specimens. In contrast, this application adopts a modular design, which fixes the clamping part and the support part through the reference base, making it convenient for storage and transportation.

[0035] Furthermore, this application also provides a method for cutting a test specimen for splitting tensile strength of adhesive joints. The cutting method is carried out using the aforementioned cutting equipment to complete the cutting of the specimen for splitting tensile strength of adhesive joints. The resulting specimen has accurate dimensions and a complete and relatively smooth end face, which meets the test requirements. Attached Figure Description

[0036] Figure 1 A schematic diagram of the cutting equipment for the test specimen of splitting tensile strength of adhesive joint provided in Example 1;

[0037] Figure 2 This is a schematic diagram of the cutting device for the test specimen of the splitting tensile strength of the adhesive joint provided in Example 1 from another perspective;

[0038] Figure 3 This is a schematic diagram of the cutting equipment for the test specimen of the splitting tensile strength of the adhesive joint provided in Example 1, viewed from the bottom.

[0039] Figure 4 This is a partial structural diagram of the support portion in Example 1;

[0040] Figure 5 This is a schematic diagram of the cutting section in Example 1;

[0041] Figure 6 This is a schematic diagram of the fixture part in Example 1. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example 1

[0044] This embodiment provides a cutting device for a test specimen for the splitting tensile strength of adhesive joints. During the preparation of the test specimen, a cylinder with a diameter of (25±0.1) mm is drilled from a larger cross-sectional molded adhesive joint specimen using a drill bit with an inner diameter of (25±0.1) mm. The cutting device provided in this embodiment can then be used to cut the cylinder in the length direction, ultimately obtaining a test specimen for the splitting tensile strength of adhesive joints with a length of (50±0.1) mm.

[0045] Reference Figure 1-6 The cutting device for the splitting tensile strength test specimen of the adhesive joint provided in this embodiment includes: a reference base 1, a clamping part, a cutting part, a support part supporting the cutting part, and a fixing seat for fixing the clamping part and the support part onto the reference base 1. Specifically:

[0046] The reference base 1 is flat and has several grooves arranged in parallel on its upper surface. Except for the part with grooves, the upper surface of the other parts of the reference base 1 is in the same plane, which can provide a reliable height positioning reference for the equipment installed on it.

[0047] The clamping unit, fixed to the reference base 1, includes three concentric arc-shaped grippers 4, which clamp the sample concentrically. Specifically, a high-torque third servo motor 3 is installed inside the clamping unit. The output shaft of the third servo motor 3 can drive the three grippers 4 to move simultaneously concentrically or outward. The distance of movement is adjusted according to the diameter of the sample, and the degree of concentric clamping can be adjusted by detecting the output torque of the third servo motor 3, thereby ensuring the clamping effect. Figure 1 , Figure 2 and Figure 6In this embodiment, the arc length of the arc-shaped jaw 4 is very large. When the inner diameter of the three arc-shaped jaws 4 is about 25 mm, they can basically form a complete circle, thus enabling more stable clamping of the sample to be cut.

[0048] The cutting section is mounted on the crossbar 14 and lead screw 15 of the support section. The cutter head 23 of the cutting section is configured such that its axis is perpendicular to the direction of extension of the groove. When cutting the sample, the cutter head 23 rotates around its own axis and moves along the direction of extension of the groove with the help of the support section. The high-torque first servo motor 18 that drives the rotation of the cutter head 23 is located above the cutter head 23. The cutter head 23 and the first servo motor 18 are located below and above the crossbar 14 and lead screw 15, respectively, which is beneficial to the stability of the feed movement of the cutter head 23. The cutting section is mounted on the lead screw 15. Correspondingly, the cutting section includes a threaded hole that is threaded to the lead screw 15. When cutting, the lead screw 15 rotates to drive the cutter head 23 to feed and complete the cutting.

[0049] The support unit, fixed to the reference base 1, includes two horizontal crossbars 14 arranged parallel to the extending direction of the groove and a lead screw 15 located between the two crossbars 14. The two ends of the crossbars 14 and the lead screw 15 are respectively mounted on a support plate 13, which is installed on a crossbeam 11. (Refer to...) Figure 4 The crossbeam 11 includes a middle section and connecting ends located on both sides of the middle section. The middle section and the connecting ends are stepped, and the height of the middle section is higher than that of the connecting ends. The support plate 13 is installed in the middle section of the crossbeam 11. In this embodiment, two crossbars 14 are provided and located at both ends of the lead screw 15. The two crossbars 14 and the lead screw 15 provide high-rigidity support for the cutting part, which can better ensure the stability of the cutting part erected on it. In addition, the crossbeam 11 in this embodiment has good structural rigidity and strong load-bearing capacity, which further ensures the stability of the cutting part.

[0050] Two vertical rods 7 of the support part pass through the connecting end, and a vertical threaded rod 9 is located between the two vertical rods 7 and threadedly connected to the crossbeam 11; thus, by rotating the threaded rod 9, the crossbeam 11 can be raised or lowered, and the height of the initial position of the cutter head 23 can be adjusted by raising or lowering the crossbeam 11, which can accommodate samples of more diameters.

[0051] The two ends of the clamping part are fixed to the reference base 1 via the fixing base 2, and the threaded rod 9 and vertical rod 7 of the support part are fixed to the reference base 1 via the fixing base 2. The two ends of the clamping part, refer to... Figure 1 This refers to the two sides of the gripper 4 position, which are fixed to provide support to counteract the forces and torques received by the sample during the cutting process.

[0052] The cutting equipment provided in this embodiment can ensure stable clamping of the sample and stable feed movement of the cutter head, thereby ensuring cutting accuracy. The cut end face is complete and relatively smooth, and can obtain an effective shaped test specimen.

[0053] Traditional cutting equipment is used for cutting test specimens for splitting tensile strength of adhesive joints. The large size of the connecting and fixing parts makes it unsuitable for long-distance use and the collection and handling of specimens. In contrast, this application adopts a modular design, which fixes the clamping part and the support part through the reference base, making it convenient for storage and transportation.

[0054] In this embodiment, a display screen 5 is fixedly connected to the upper surface of the third servo motor 3. A switch button 6 is provided on the upper surface of the display screen 5. During the cutting process, the display screen 5 provides the time and servo motor speed display, showing the corresponding test parameters of the splitting tensile strength of the adhesive joint to be cut.

[0055] In this embodiment, in order to stably fix the support and cutting parts on the reference base 1, the distance between the grooves provided on the reference base 1 includes A1, A2 and A3 that decrease in sequence, and the grooves on the reference base 1 are arranged in a cycle of A1, A3 and A2.

[0056] The fixing base 2 includes a circular cross-section groove in the middle and ears at both ends. Threaded fasteners are vertically inserted through the ears, and the minimum distance between two threaded fasteners is equal to A2. The threaded fasteners can be screws or bolts with nuts.

[0057] In this embodiment, Figure 1 As can be clearly seen, the two threaded fasteners of the fixing seat 2 of the fixture part are located in different grooves; therefore, the four points of fixing the fixture part are the four corner points of a rectangle, which can better provide more stable support for the sample that bears the cutting force during cutting.

[0058] In this embodiment, refer to Figure 1 and Figure 2 The two threaded fasteners of the fixing seat 2 for fixing the vertical rod 7 of the support part are located in the same groove, which provides stable support for the support part. The two threaded fasteners of the fixing seat 2 for fixing the threaded rod 9 of the support part are located in adjacent grooves, which can ensure high rotational accuracy of the screw 9 and facilitate adjustment of the height of the crossbeam 11.

[0059] In this embodiment, in order to enhance the support strength of the support part, the upper ends of the two vertical rods 7 of the support part are fixedly connected to a support connecting plate 8. The support connecting plate 8 is provided with a through hole, and a fixing ring 10 is coaxially connected to the through hole. The inner wall of the fixing ring 10 is provided with a thread, and the threaded rod 9 of the support part is threadedly connected to the fixing ring 10.

[0060] In order to achieve the horizontality of the cutting part, in this embodiment, the upper end of the threaded rod 9 at one end of the lead screw 15 of the support part is connected to the knob 26;

[0061] The lower ends of the threaded rods 8 at both ends are each connected to a first bevel gear 27 with a vertical axis;

[0062] The support also includes a transmission rod 28 connected to the lower surface of the reference base via a bearing seat, and each end of the transmission rod 28 is connected to a second bevel gear 29 on a horizontal axis.

[0063] The first bevel gear 27 and the second bevel gear 29 located at the same end of the lead screw 15 are engaged.

[0064] Therefore, the height of the crossbeams 11 on both sides can be guaranteed to be the same, thus ensuring the horizontality of the cutting part.

[0065] In this embodiment, the cutting portion further includes:

[0066] The main body 16 of the cutting equipment is mounted on the crossbar 14 and the lead screw 15. The main body 16 of the cutting equipment is equipped with a through hole for the crossbar 14 to pass through and a fixing ring 12 that is threaded to the lead screw. The inner wall of the fixing ring 12 is threaded. By fixing the fixing ring 12 to the main body 16 of the cutting equipment, the threaded connection between the main body 16 of the cutting equipment and the lead screw 15 can be realized, which simplifies the processing difficulty and facilitates maintenance and replacement.

[0067] The transmission body 22 is connected to the lower part of the cutting equipment body 16, with one end connected to the cutter head 23 and the other end connected to the first pulley 21;

[0068] The first servo motor 18 that drives the cutter head 23 to rotate is mounted on the upper support plate 17 on the upper surface of the cutting equipment body 16, and the output shaft of the first servo motor 18 is connected to the second pulley 19.

[0069] A transmission belt 20 is provided between the first pulley 21 and the second pulley 19.

[0070] In this embodiment, one end of the lead screw 15 of the support part is connected to the output shaft of the high-torque second servo motor 24, and the second servo motor 24 is mounted on the crossbeam.

[0071] The control button 25 of the second servo motor is mounted on the second servo motor 24. Preferably, the knob 26 and the control button 25 are mounted on the same side of the support for easy operation.

[0072] In this embodiment, a protective cover is provided with an upward-facing edge on the reference base 1. The protective cover is used to protect the personal safety of the operator when the cutting equipment cuts the sample, and also allows observation of the cutting status during the cutting process.

[0073] In this embodiment, a dust collection hood is connected to the reference base 1, and a vacuum cleaner is connected to the outside of the dust collection hood to absorb the cutting dust and keep the cutting equipment clean.

[0074] Example 2

[0075] This embodiment provides a method for cutting a test specimen for splitting tensile strength of adhesive joints, which can be implemented using the cutting equipment provided in Embodiment 1, and includes:

[0076] The sample is mounted and fixed in the clamp.

[0077] The relative position is fixed by adjusting the clamping part, and the position of the cutting equipment is adjusted by the control button 25 and the switch button 6 and the speed parameters of each servo motor are set. The position of the clamping part is adjusted so that the plane to be cut of the sample and the cutting edge of the cutter head 23 are on the same plane.

[0078] The height of the crossbeam 11 is adjusted by making fine adjustments up and down using the fine-tuning knob 26, so that the lowest point of the cutter head 23 is located above the sample.

[0079] Start the first servo motor 18 and the second servo motor 24 to cut the sample;

[0080] After cutting, release jaw 4 to obtain the sample.

[0081] Before cutting, the positions of the cutter head and the sample can be precisely adjusted, as can the cutting speed and feed rate. During the cutting process, the position and movement of the cutter head and the sample are stable, thereby ensuring that the sample obtained from the cutting is of accurate size and the cut surface is complete and smooth.

[0082] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cutting device for test specimens of splitting tensile strength of adhesive joints, characterized in that, Include: The reference base is flat and has several parallel grooves on its upper surface. The clamping part, fixed on the reference base, includes three or more concentric arc-shaped jaws that clamp the sample in a concentric manner. The cutting section is mounted on the crossbar and lead screw of the support section. The cutter head of the cutting section is configured such that its axis is perpendicular to the direction of extension of the groove, and when cutting the sample, the cutter head rotates about its own axis and moves along the direction of extension of the groove with the help of the support section; the first motor that drives the cutter head to rotate is located above the cutter head. The support unit, fixed to the reference base, includes two horizontal crossbars arranged parallel to the extension direction of the groove and a lead screw located between the two crossbars. The two ends of the crossbars and the lead screw are respectively mounted on a support plate. The support plate is mounted on a crossbeam. The crossbeam includes a middle section and connecting ends located on both sides of the middle section. The middle section and the connecting ends are stepped, and the height of the middle section is higher than that of the connecting ends. The support plate is mounted on the middle section of the crossbeam. Two vertical rods pass through the connecting ends, and a vertical threaded rod is located between the two vertical rods and threadedly connected to the crossbeam. The fixed base, the two ends of the clamping part are fixed to the reference base by the fixed base, and the threaded rod and the vertical rod of the support part are fixed to the reference base by the fixed base; The distance between the grooves provided on the reference base includes A1, A2 and A3 that decrease sequentially, and the grooves are arranged on the reference base in a cycle of A1, A3 and A2; The fixing seat includes a circular cross-section groove in the middle and ears at both ends. Threaded fasteners are vertically inserted through the ears, and the minimum distance between two threaded fasteners is equal to A1, A3, or A2. The two threaded fasteners of the fixing seat that fixes the clamp part are located in the same groove or in adjacent grooves; The two threaded fasteners of the fixing seat that fixes the support are located in the same groove or in adjacent grooves; The cutting section further includes: The main body of the cutting equipment is mounted on the crossbar and the lead screw. The main body of the cutting equipment is equipped with a through hole for the crossbar to pass through and a fixing ring that is threaded to the lead screw. The inner wall of the fixing ring is threaded. The transmission body is connected to the lower part of the cutting equipment body, with one end connected to the cutter head and the other end connected to the first pulley; The first motor that drives the cutter head to rotate is mounted above the main body of the cutting equipment, and the output shaft of the first motor is connected to the second pulley; A transmission belt is provided between the first pulley and the second pulley.

2. The cutting equipment according to claim 1, characterized in that, The upper ends of the two vertical rods of the support are fixedly connected to a support connecting plate. The support connecting plate is provided with a through hole, and a fixing ring is coaxially connected to the through hole. The inner wall of the fixing ring is provided with a thread, and the threaded rod of the support is threadedly connected to the fixing ring.

3. The cutting equipment according to claim 1, characterized in that, A knob is connected to the upper end of the threaded rod at one end of the lead screw of the support part; The lower end of each threaded rod is connected to a first bevel gear with a vertical axis; The support also includes a transmission rod connected to the lower surface of the reference base via a bearing seat, and each end of the transmission rod is connected to a second bevel gear on a horizontal axis. The first bevel gear and the second bevel gear located at the same end of the lead screw are meshed together.

4. The cutting device according to claim 1, characterized in that, One end of the lead screw of the support is connected to the output shaft of the second motor, which is mounted on the crossbeam.

5. The cutting equipment according to claim 1, characterized in that, A protective cover is provided on the upward-facing edge of the reference base.

6. The cutting device according to claim 1, characterized in that, The reference base is connected to the dust hood, and the dust hood is connected to a vacuum cleaner to absorb the cutting dust.

7. A method for cutting test specimens for splitting tensile strength testing of adhesive joints, characterized in that, Implemented on the cutting device of claim 4, comprising: The sample is mounted and fixed in the clamp. Adjust the position of the clamping part so that the plane to be cut of the sample is on the same plane as the cutting edge of the cutter head; Adjust the height of the crossbeam so that the lowest point of the cutter head is above the sample; Start the first motor and the second motor to cut the sample.

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