Metal plate fatigue specimen polishing equipment

Abstract

The invention belongs to the technical field of plate fatigue testing, and particularly relates to metal plate fatigue specimen polishing equipment which comprises a fixing part, a control part is arranged in the fixing part, the fixing part comprises a fixing bottom box, and a rod pushing device is arranged on the back of the outer surface of the fixing bottom box; and straight auxiliary rods are uniformly inserted into an inner cavity of the rod pushing device. When the sample pressing sleeve moves along with the bidirectional motor, the sample pressing sleeve only makes contact with the upper surface of the sample plate, so that the problem that the sample plate and the sample pressing sleeve are abraded is solved, the device can continuously carry out fatigue limit testing work of a machining plate for a long time, the high-precision guiding function of the sample pressing sleeve is kept, and the working efficiency is improved. The bidirectional motor firstly carries out coarse calibration work in a mode that the upper pressing sliding plate slides downwards, then dynamic fine adjustment work is carried out on the height where the bidirectional motor is located in the working process through the traction effect of the pressure control pull rod, and therefore the working continuity and the working reliability of the device are guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of plate fatigue testing technology, specifically a metal plate fatigue sample grinding device. Background Technology

[0002] Fatigue testing determines the fatigue limit of metallic materials through experiments, plots the SN curve of the material, and then observes fatigue failure phenomena and fracture characteristics. This leads to the learning of methods for determining the fatigue limit of metallic materials under symmetrical cyclic conditions. Fatigue testing requires high precision in specimen dimensions and surface roughness, and test results often vary significantly, necessitating the assurance of accurate and consistent specimen condition.

[0003] A metal sheet fatigue specimen grinding device and method, with publication number CN113231921A, can be used to install a flexible grinding head and a contour roller on an electric grinder to make the ground parts conform to the specimen, avoiding the problem of excessive discrepancy between the grinding efficiency and the specimen quality. However, this equipment has certain drawbacks: in order to ensure the accuracy of shaping, the contour roller must rotate in close contact with the specimen. However, if the specimen is too close, it will come into contact with the high-speed rotating contour roller during continuous processing, resulting in damage to the specimen itself, which in turn leads to errors in the ground parts. Therefore, the device cannot be used for continuous processing and needs to be improved. Summary of the Invention

[0004] To address the problem that existing technology samples may be damaged during calibration and grinding, the technical solution adopted in this invention is: a metal sheet fatigue sample grinding device, comprising: A fixing component, wherein a control component is provided inside the fixing component; The fixing component includes: A fixed base box is provided with a pusher on the back of the outer surface of the fixed base box, and straight auxiliary rods are evenly inserted into the inner cavity of the pusher. The container frame is located on the left side of the inner wall of the fixed base box. The outer surface of the container frame is inserted into the inner wall of the fixed base box. Both sides of the inner cavity of the container frame are threaded with reinforcing bolts, and a processing plate is inserted into the inside of the container frame. The sample frame is symmetrically arranged on both sides of the control component. The outer surface of the sample frame is inserted into the inner wall of the fixed base box, and the sample frame is inserted into the interior. The container frame is similar in overall structure to the sample frame, but the container frame has a larger capacity in order to accommodate more plates. Both containers are reinforced with internal plates by screwing in reinforcing bolts. The control component includes: An adjustment component is provided, the interior of which is a rotating module, and the outer surface of which is fitted with a sensing component.

[0005] Furthermore, the sensing component includes: The control base cylinder has symmetrically arranged adapter ports at the top of its inner cavity and symmetrically arranged adapter ends on both sides of its outer surface. The pressure-controlled pull rod has its bottom end connected to the top of the inner cavity of the control bottom cylinder via an adapter connector. The control bottom cylinder can achieve the extension and retraction deformation of the pressure-controlled pull rod by controlling the pressure inside the pressure-controlled pull rod. The sample pressure sleeves are symmetrically arranged on both sides of the outer surface of the control bottom cylinder, and the sample pressure sleeves directly contact the sample plate inside the sample frame.

[0006] Furthermore, the sample compression sleeve includes: A rotating housing, wherein a through slot is provided at the axis of the inner cavity of the rotating housing; A contact ring sleeve, the outer surface of which is sleeved with the inside of the rotating housing through a circumferential groove, and the outer surface of the contact ring sleeve extends to the outside of the rotating housing; An inner pressure-sensitive band, the outer surface of which is sleeved with the inner wall of the contact ring.

[0007] Furthermore, the sample compression sleeve also includes: The outer surface of the sensing ring is rotatably connected to the side of the inner cavity of the rotating sleeve near the control bottom cylinder, and the inner cavity of the inner pressure sensing band is inserted into the inner cavity of the sensing ring through an inner guide rod. An external adapter wire is inserted into the inner cavity of the sensing ring at its top end and into the outer surface of the control bottom cylinder through an adapter end. When the rotating sleeve rotates, the pressure sensing element composed of the contact ring, inner pressure sensing band, inner guide rod and sensing ring will rotate relative to the rotating sleeve, thereby ensuring that the contact ring only has contact pressure on the outer surface of the template.

[0008] Furthermore, the transfer module includes: A bidirectional motor, wherein both ends of the bidirectional motor shaft are inserted with irregularly shaped plugs, and the outer surface of the irregularly shaped plugs is inserted into the center of the shaft through a through slot into the inner cavity of the rotating housing; A guide suction cylinder, wherein the axial center of the inner wall of the guide suction cylinder is inserted into the outer surface of the irregularly shaped insert rod; The grinding turntable has its inner cavity axial center connected to one end of the irregularly shaped insert near the processing plate. The bidirectional motor drives the grinding turntable and the rotating sleeves on both sides to rotate synchronously through the irregularly shaped insert. However, the sleeved guide suction cylinder is not inserted into the outer surface of the irregularly shaped insert, so it will also slip with the rotating shaft of the bidirectional motor.

[0009] Furthermore, the adjusting component includes: A two-way puller, wherein an operation panel is provided on the outer surface of the two-way puller; The upper pressure plate is inserted into the upper part of the inner cavity of the bidirectional puller at its bottom end. A stabilizing pressure plate has its lower surface inserted into the outer surface of a bidirectional motor. Spring rods are evenly inserted into the top of the stabilizing pressure plate, and the top of each spring rod is inserted into the inner wall of the upper pressure slide. The bidirectional puller can pull the upper pressure slide downward, thereby adjusting the initial height of the bidirectional motor through the stabilizing pressure plate.

[0010] Furthermore, the adjusting component also includes: The sliding base plate has its top end inserted into the lower part of the inner cavity of the bidirectional puller, the bottom of the control base cylinder inserted into the middle part of the inner wall of the sliding base plate, and the outer surface of the sliding base plate inserted into the end of the straight auxiliary rod away from the pusher. A roller module is installed at the bottom of the inner cavity of the sliding base plate. The bottom of the sliding base plate is slidably connected to the inner wall of the fixed base box through the roller module. The sliding base plate moves in a directional manner along the inner wall of the fixed base box through the roller module.

[0011] Furthermore, the fixing component also includes: The following is a sliding suction box, the lower surface of which is slidably connected to the bottom of the inner wall of the fixed base box. A connecting rod is inserted into the bottom of the inner cavity of the guide suction cylinder. The bottom end of the connecting rod is inserted into the top of the following suction box. During operation, the top of the following suction box is connected to the lowered guide suction cylinder through the connecting rod, thereby connecting the guide suction cylinder and performing adsorption work on the side close to the grinding turntable. The reinforcing components are symmetrically arranged on both sides of the outer surface of the sliding base plate to increase the friction between the sliding base plate and the bottom of the fixed base box.

[0012] Furthermore, the reinforcing component includes: A long guide shell, the outer surface of which is inserted into the bottom of the inner wall of the fixed base box; A directional sliding shell, wherein the outer surface of the directional sliding shell is slidably connected to the inner wall of the elongated guide shell; The inner plate is inserted into the outer surface of the inner plate and the inner wall of the directional sliding shell. The side of the inner plate away from the directional sliding shell is inserted into the outer surface of the sliding bottom plate. The push-down control plate has its outer surface fixedly connected to the top of the inner wall of the directional sliding shell, and the air intake pipes on both sides of the front end of the push-down control plate extend to the outside of the directional sliding shell. The segmented push plate has its top inserted into the inner cavity of the push control plate and its bottom inserted into the upper surface of the inner plate. When the push control plate pushes the inner plate downward through the segmented push plate, it will apply downward pressure to the sliding bottom plate through the inner plate, thereby increasing the downward pressure of the adjustment component itself.

[0013] The beneficial effects of this invention are as follows: 1. When the sample clamping sleeve moves with the bidirectional motor, it only contacts the upper surface of the sample plate, so there will be no wear between the sample plate and the sample clamping sleeve. This allows the device to continuously and for a long time perform fatigue limit testing of the processed plate, thus maintaining the high-precision guiding function of the sample clamping sleeve. The bidirectional motor first performs coarse calibration by sliding down the upper pressure slide plate, and then the height of the bidirectional motor is dynamically fine-tuned during operation by the traction of the pressure control rod, thereby ensuring the continuity and reliability of the device's operation.

[0014] 2. This device can guide the grinding turntable to shape and grind the outer surface of the processing plate by contacting the modified sample sleeve with the outer surface of the sample plate. Since the sample sleeve does not rotate synchronously with the grinding turntable, and can provide timely feedback to the control base cylinder through the external adapter wire after the sample sleeve contacts the outer surface of the sample plate, the grinding turntable will not deviate too much due to excessive pressure from the sample sleeve against the sample plate, thus avoiding the problem of grinding error.

[0015] 3. When the bidirectional motor moves, the follow-up suction box will also slide synchronously, and continuously adsorb the metal debris splashed on the outer surface of the grinding turntable through the mesh of the guide suction tube. On the one hand, it can clean the outer surface of the grinding turntable, reduce the amount of debris accumulation, and prevent the accumulated debris from affecting the actual size of the finished product processing plate. On the other hand, it can prevent a large amount of debris from crossing the guide suction tube and entering the area where the sample frame is located, preventing debris from interfering with the sensing work of the sample pressure sleeve and maintaining the stability of the operation.

[0016] 4. When the part of the processing plate that needs to be ground is thick, the bidirectional motor needs to be kept stable at the required height for continuous grinding. However, the control component itself moves through the roller module at the bottom. The vibration generated by the grinding turntable makes it difficult for the control component to operate stably. Therefore, directional sliding shells are set on both sides of the sliding base plate. The control plate is pushed down by pressing the inner plate through the segmented push plate, thereby increasing the static friction between the roller module and the inner wall of the fixed base box. This achieves the effect of stabilizing the control component at all times and avoids the control component from shaking, which would cause grinding distortion. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention; Figure 2 This is a schematic diagram of the structure of the fixing component of the present invention; Figure 3 This is a schematic diagram of the structure of the control component of the present invention; Figure 4 This is a schematic diagram of the structure of the sensing component of the present invention; Figure 5 This is the present invention. Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the structure of the rotating module of the present invention; Figure 7 This is a schematic diagram of the structure of the adjusting component of the present invention; Figure 8 This is a cross-sectional view of the reinforcing component of the present invention.

[0018] In the diagram: 1. Fixed component; 2. Control component; 11. Fixed base box; 12. Sample frame; 13. Sample plate; 14. Vertical auxiliary rod; 15. Follow-up drawer; 16. Container frame; 17. Processing plate; 21. Adjustment component; 22. Rotary module; 4. Sensing component; 41. Control base cylinder; 42. Pressure control rod; 43. External adapter wire; 5. Sample pressure sleeve; 51. Rotating sleeve; 52. Contact ring; 53. Inner pressure sensing band; 54. Inner guide rod; 5 5. Induction rotating ring; 221. Bidirectional motor; 222. Irregularly shaped insert rod; 223. Grinding turntable; 224. Guide suction cylinder; 225. Connecting insert rod; 211. Bidirectional pull plate device; 212. Upper pressure slide plate; 213. Spring pressure rod; 214. Stabilizing pressure plate; 215. Lower sliding base plate; 216. Roller module; 3. Reinforcing components; 31. Long strip guide shell; 32. Inserted inner plate; 33. Oriented sliding shell; 34. Downward push control plate; 35. Segmented push plate. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0020] Example 1, please refer to Figures 1-6 This invention provides a technical solution: a metal sheet fatigue sample grinding device, comprising: Fixed component 1, with control component 2 installed inside fixed component 1; Fixed component 1 includes: A fixed base box 11 is provided with a push rod device on the back of the outer surface of the fixed base box 11, and straight auxiliary rods 14 are evenly inserted into the inner cavity of the push rod device. The container frame 16 is located on the left side of the inner wall of the fixed base box 11. The outer surface of the container frame 16 is inserted into the inner wall of the fixed base box 11. Both sides of the inner cavity of the container frame 16 are threaded with reinforcing bolts, and a processing plate 17 is inserted into the inside of the container frame 16. Sample frames 12 are symmetrically arranged on both sides of control components 2. The outer surface of sample frames 12 is inserted into the inner wall of fixed base box 11, and sample plates 13 are inserted into the inside of sample frames 12. The overall structure of container frame 16 is similar to that of sample frames 12, but container frame 16 has a larger capacity in order to accommodate more plates. Both containers are reinforced with internal plates by screwing in reinforcing bolts. Control component 2 includes: Adjustment component 21, inside which is installed a rotating module 22, and on the outer surface of the rotating module 22 is a sensing component 4.

[0021] Sensing component 4 includes: The control base cylinder 41 has symmetrically provided adapter ports at the top of its inner cavity, and symmetrically provided adapter ends on both sides of its outer surface. The bottom end of the pressure control rod 42 is inserted into the top of the inner cavity of the control base cylinder 41 through an adapter socket. The control base cylinder 41 can realize the extension and retraction deformation of the pressure control rod 42 by controlling the pressure inside the pressure control rod 42. The sample pressure sleeve 5 is symmetrically arranged on both sides of the outer surface of the control bottom cylinder 41, and the sample pressure sleeve 5 directly contacts the sample plate 13 inside the sample frame 12.

[0022] Sample pressure sleeve 5 includes: Rotary sleeve 51, with a through slot at the axis of the inner cavity of the rotating sleeve 51; The outer surface of the contact ring 52 is sleeved with the inside of the rotating housing 51 through a ring groove, and the outer surface of the contact ring 52 extends to the outside of the rotating housing 51. The inner pressure-sensing band 53 has its outer surface fitted into the inner wall of the contact ring 52.

[0023] Sample sleeve 5 also includes: The outer surface of the sensing ring 55 is rotatably connected to the inner cavity of the rotating housing 51 near the control bottom cylinder 41. The inner cavity of the inner pressure sensing band 53 is inserted into the inner cavity of the sensing ring 55 through the inner guide rod 54. The top end of the external adapter wire 43 is inserted into the inner cavity of the sensing ring 55, and the bottom end of the external adapter wire 43 is inserted into the outer surface of the control bottom cylinder 41 through the adapter end. When the rotating sleeve 51 rotates, the pressure sensing element composed of the contact ring 52, the inner pressure sensing band 53, the inner guide rod 54 and the sensing ring 55 will rotate relative to the rotating sleeve 51, thereby ensuring that the contact ring 52 only has contact pressure on the outer surface of the template 13.

[0024] The transfer module 22 includes: The bidirectional motor 221 has two ends of its rotating shaft with shaped plugs 222 inserted into each other. The outer surface of the shaped plugs 222 is inserted into the shaft center that passes through the through slot and is connected to the inner cavity of the rotating sleeve 51. The guide suction cylinder 224 is inserted into the outer surface of the irregular-shaped insert rod 222 at the axis of the inner wall of the guide suction cylinder 224; The grinding turntable 223 has its inner cavity shaft connected to the end of the irregularly shaped insert rod 222 near the processing plate 17. The bidirectional motor 221 drives the grinding turntable 223 and the rotating sleeves 51 on both sides to rotate synchronously through the irregularly shaped insert rod 222. However, the sleeved guide suction cylinder 224 is not inserted into the outer surface of the irregularly shaped insert rod 222, so it will also slip with the shaft of the bidirectional motor 221.

[0025] Before the polishing work, the template 13 and the processing plate 17 are installed inside the sample frame 12 and the container frame 16 respectively. Then, the plates are fixed by tightening the corresponding fastening bolts. Then, the bidirectional puller 211 pulls the upper pressure slide plate 212 downward, so that the rotating module 22 gradually approaches the plate. After the rotating module 22 is suspended at a certain height, the bidirectional puller 211 starts to pull the rotating module 22 downward through the top pressure control rod 42. At this time, the polishing turntable 223 at the end first contacts the processing plate 17 inside the container frame 16, and then polishes the outer surface of the processing plate 17. As the polishing is carried out, the processing plate 17 becomes thinner, and the rotating module 22 will continue to move downward under the traction until the sample pressure sleeve 5 contacts the outer surface of the template 13.

[0026] When the sample pressure sleeve 5 contacts the outer surface of the sample plate 13, the contact ring 52 located on the side of the rotating sleeve 51 will contact and press against the outer surface of the sample plate 13. At this time, the inner pressure sensing band 53 will sense the contact pressure and then transmit it to the side sensing ring 55 through the inner guide rod 54. The sensing ring 55 will then feed back to the bottom control cylinder 41 through the outer adapter wire 43. At this time, the control cylinder 41 will immediately stop pulling the rotating module 22. Then the adjusting component 21 will slide through the bottom roller module 216. During this period, the control cylinder 41 will dynamically fine-tune the height of the bidirectional puller 211 according to the pressure fed back by the sample pressure sleeve 5, so that the contact ring 52 is always at a height that slightly contacts the outer surface of the sample plate 13. In this way, the grinding turntable 223 can always grind the processing plate 17 into the shape of the sample plate 13 in a relatively accurate manner.

[0027] Example 2, please refer to Figures 1-8 The present invention provides a technical solution: based on embodiment 1, the adjusting component 21 includes: A two-way puller 211 has an operation panel on its outer surface. The upper pressure plate 212 is inserted into the upper part of the inner cavity of the two-way puller 211 at its bottom end. A stabilizing pressure plate 214 is provided, with its lower surface inserted into the outer surface of the bidirectional motor 221. Spring pressure rods 213 are evenly inserted into the top of the stabilizing pressure plate 214, with the top of the spring pressure rods 213 inserted into the inner wall of the upper pressure slide plate 212. The bidirectional puller 211 can pull the upper pressure slide plate 212 downward, thereby adjusting the initial height of the bidirectional motor 221 through the stabilizing pressure plate 214.

[0028] Adjustment component 21 also includes: The bottom plate 215 slides down, and the top of the bottom plate 215 is inserted into the lower part of the inner cavity of the bidirectional puller 211. The bottom of the control cylinder 41 is inserted into the middle of the inner wall of the bottom plate 215. The outer surface of the bottom plate 215 is inserted into the end of the straight auxiliary rod 14 away from the pusher. The roller module 216 is located at the bottom of the inner cavity of the sliding base plate 215. The bottom of the sliding base plate 215 is slidably connected to the inner wall of the fixed base box 11 through the roller module 216. The sliding base plate 215 moves in a directional manner along the inner wall of the fixed base box 11 through the roller module 216.

[0029] The fixing component 1 also includes: The lower surface of the follow-up drawer 15 is slidably connected to the bottom of the inner wall of the fixed base box 11. A connecting rod 225 is inserted into the bottom of the inner cavity of the guide suction cylinder 224. The bottom end of the connecting rod 225 is inserted into the top end of the follow-up drawer 15. During operation, the top of the follow-up drawer 15 is inserted into the lowered guide suction cylinder 224 through the connecting rod 225, thereby connecting the guide suction cylinder 224 to perform adsorption work on the side close to the grinding turntable 223. The reinforcing components 3 are symmetrically arranged on both sides of the outer surface of the sliding base plate 215 to increase the friction between the sliding base plate 215 and the bottom of the inner wall of the fixed base box 11.

[0030] Reinforcing component 3 includes: The long guide shell 31 is inserted into the bottom of the inner wall of the fixed base box 11 on its outer surface. The directional sliding shell 33 has its outer surface slidably connected to the inner wall of the elongated guide shell 31. The inner plate 32 is inserted into the outer surface of the inner plate 32 and inserted into the inner wall of the directional sliding shell 33. The side of the inner plate 32 away from the directional sliding shell 33 is inserted into the outer surface of the sliding bottom plate 215. The outer surface of the push control plate 34 is fixedly connected to the top of the inner wall of the directional sliding shell 33, and the air intake pipes on both sides of the front end of the push control plate 34 extend to the outside of the directional sliding shell 33. The segmented push plate 35 has its top inserted into the inner cavity of the push control plate 34, and its bottom inserted into the upper surface of the inner plate 32. When the push control plate 34 pushes the inner plate 32 downward through the segmented push plate 35, it will apply downward pressure to the sliding base plate 215 through the inner plate 32, thereby increasing the downward pressure of the adjusting component 21 itself.

[0031] When the bidirectional motor 221 is lowered, the guide suction cylinder 224 facing the grinding turntable 223 is also lowered. At this time, the connecting rod 225 at the bottom of the guide suction cylinder 224 is inserted into the top of the follow-up suction box 15, realizing the connection of the follow-up suction box 15. When the bidirectional motor 221 moves, the follow-up suction box 15 will also slide synchronously, and continuously adsorb the metal debris splashed on the outer surface of the grinding turntable 223 through the mesh of the guide suction cylinder 224. On the one hand, it can clean the outer surface of the grinding turntable 223 and reduce the amount of debris accumulation. On the other hand, it can prevent a large amount of debris from crossing the guide suction cylinder 224 and entering the area where the sample frame 12 is located, preventing debris from interfering with the sensing operation of the sample pressure sleeve 5.

[0032] The adjustment component 21 slides through the roller module 216 at the bottom of the sliding base plate 215, which can be driven autonomously. When the sliding base plate 215 moves, it will drive the directional sliding shell 33 to slide synchronously along the inner wall of the long guide shell 31 through the plug-in inner plates 32 connected on both sides. When the grinding turntable 223 grinds the thicker part of the processing plate 17, it is necessary to maintain the stability of the control component 2 for a long time. At this time, the push control plate 34 presses down the plug-in inner plate 32 through the segmented push plate 35 to press down the sliding base plate 215, thereby increasing the static friction between the roller module 216 and the inner wall of the fixed base box 11, thus achieving the effect of stabilizing the control component 2 at all times.

[0033] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A grinding device for fatigue test specimens of metal plates, comprising: A fixing component (1) is provided with a control component (2) inside the fixing component (1); The characteristic is that the fixing component (1) includes: A fixed base box (11) is provided with a pusher on the back of the outer surface of the fixed base box (11), and a straight auxiliary rod (14) is evenly inserted into the inner cavity of the pusher. The container frame (16) is located on the left side of the inner wall of the fixed base box (11). The outer surface of the container frame (16) is inserted into the inner wall of the fixed base box (11). Both sides of the inner cavity of the container frame (16) are threaded with reinforcing bolts, and a processing plate (17) is inserted into the inside of the container frame (16). The sample frame (12) is symmetrically arranged on both sides of the control component (2). The outer surface of the sample frame (12) is inserted into the inner wall of the fixed base box (11), and a template (13) is inserted into the inside of the sample frame (12). The control component (2) includes: An adjustment component (21) is provided inside the adjustment component (21), and a rotating module (22) is sleeved on the outer surface of the rotating module (22).

2. The metal sheet fatigue sample grinding equipment according to claim 1, characterized in that: The sensing component (4) includes: The control base cylinder (41) has symmetrically provided adapter ports at the top of its inner cavity, and adapter ends are symmetrically provided on both sides of its outer surface. The bottom end of the pressure control rod (42) is inserted into the top of the inner cavity of the control bottom cylinder (41) through an adapter socket; The sample pressure sleeve (5) is symmetrically arranged on both sides of the outer surface of the control bottom cylinder (41).

3. The metal sheet fatigue sample grinding equipment according to claim 2, characterized in that: The sample compression sleeve (5) includes: A rotating sleeve (51) has a through slot at the center of its inner cavity. Contact ring (52), the outer surface of which is sleeved with the inside of the rotating sleeve (51) through a ring groove, and the outer surface of the contact ring (52) extends to the outside of the rotating sleeve (51); The inner pressure-sensing band (53) has its outer surface fitted with the inner wall of the contact ring (52).

4. The metal sheet fatigue specimen grinding equipment according to claim 3, characterized in that: The sample compression sleeve (5) also includes: The outer surface of the sensing ring (55) is rotatably connected to the inner cavity of the rotating sleeve (51) near the control bottom cylinder (41), and the inner cavity of the inner pressure sensing band (53) is inserted into the inner cavity of the sensing ring (55) through the inner guide rod (54). An external adapter wire (43) is inserted into the inner cavity of the induction ring (55) at its top end and into the outer surface of the control bottom cylinder (41) through an adapter end.

5. The metal sheet fatigue specimen grinding equipment according to claim 2, characterized in that: The turnaround module (22) includes: A bidirectional motor (221) has two ends of a rotating shaft with a special-shaped plug (222) inserted into each end. The outer surface of the special-shaped plug (222) is inserted into the center of the shaft through a through slot into the inner cavity of the rotating housing (51). The guide suction tube (224) is inserted into the outer surface of the shaped insert rod (222) at the axial center of the inner wall of the guide suction tube (224); A grinding turntable (223) is inserted at the center of its inner cavity into one end of a shaped insert rod (222) near the processing plate (17).

6. The metal sheet fatigue specimen grinding equipment according to claim 5, characterized in that: The adjusting component (21) includes: A two-way puller (211) is provided with an operation panel on its outer surface; The upper pressure plate (212) is inserted into the upper part of the inner cavity of the two-way puller (211) at its bottom end; A stabilizing pressure plate (214) is provided, the lower surface of which is inserted into the outer surface of the bidirectional motor (221). A spring pressure rod (213) is uniformly inserted into the top of the stabilizing pressure plate (214), and the top end of the spring pressure rod (213) is inserted into the inner wall of the upper pressure plate (212).

7. The metal sheet fatigue specimen grinding equipment according to claim 6, characterized in that: The adjusting component (21) further includes: The sliding base plate (215) has its top end inserted into the lower part of the inner cavity of the bidirectional puller (211), the bottom of the control base cylinder (41) is inserted into the middle part of the inner wall of the sliding base plate (215), and the outer surface of the sliding base plate (215) is inserted into the end of the straight auxiliary rod (14) away from the pusher. The roller module (216) is located at the bottom of the inner cavity of the sliding base plate (215), and the bottom of the sliding base plate (215) is slidably connected to the inner wall of the fixed base box (11) through the roller module (216).

8. The metal sheet fatigue specimen grinding equipment according to claim 7, characterized in that: The fixing component (1) also includes: The lower surface of the follow-up drawer (15) is slidably connected to the bottom of the inner wall of the fixed base box (11), and a connecting rod (225) is inserted into the bottom of the inner cavity of the guide suction cylinder (224), and the bottom end of the connecting rod (225) is inserted into the top end of the follow-up drawer (15). The reinforcing components (3) are symmetrically arranged on both sides of the outer surface of the sliding base plate (215) to increase the friction between the sliding base plate (215) and the bottom of the inner wall of the fixed base box (11).

9. The metal sheet fatigue specimen grinding equipment according to claim 8, characterized in that: The reinforcing component (3) includes: A long guide shell (31) is inserted into the bottom of the inner wall of the fixed base box (11) on its outer surface. A directional sliding shell (33) is slidably connected to the inner wall of a long guide shell (31) on its outer surface. Insert inner plate (32), the outer surface of the insert inner plate (32) is inserted into the inner wall of the directional sliding shell (33), and the side of the insert inner plate (32) away from the directional sliding shell (33) is inserted into the outer surface of the sliding bottom plate (215). The outer surface of the push control plate (34) is fixedly connected to the top of the inner wall of the directional sliding shell (33), and the air intake pipes on both sides of the front end of the push control plate (34) extend to the outside of the directional sliding shell (33). The segmented push plate (35) has its top inserted into the inner cavity of the push control plate (34) and its bottom inserted into the upper surface of the inner plate (32).

Images