A high-temperature durable rod-shaped sample surface polishing device

Abstract

The utility model relates to a high-temperature durable rod-shaped sample surface grinding and polishing device, belonging to the technical field of metal material surface processing. The high-temperature durable rod-shaped sample surface grinding and polishing device comprises a clamping mechanism, a grinding and polishing mechanism, a transmission mechanism, a power mechanism and a device fixed connection mechanism. The power mechanism transmits power to the grinding and polishing mechanism through the transmission mechanism, and converts the continuous rotation of the power mechanism into the axial reciprocating motion of the grinding and polishing mechanism. The grinding and polishing mechanism is designed to grind and polish the surface of the high-temperature durable rod-shaped sample clamped by the clamping mechanism. The device solves the problems of rough surface and low processing efficiency of the high-temperature durable rod-shaped sample, and achieves the purpose of high-quality and high-efficiency grinding and polishing of the high-temperature durable rod-shaped sample.

Description

Technical Field

[0001] This utility model belongs to the field of metal material surface processing technology, specifically relating to a high-temperature, long-lasting grinding and polishing device for rod-shaped sample surfaces. Background Technology

[0002] With the advancement of science and technology in the aerospace field, the service environment of aircraft is becoming increasingly harsh, placing ever more stringent demands on materials. High-performance materials are essential for ensuring reliability, long service life, and low cost in aerospace engineering. Advanced high-temperature alloy materials are a necessary basis for the selection of materials for high-temperature components of aero-engines, and the testing of material mechanical properties is of great significance for characterizing material performance.

[0003] Currently, the widely used high-temperature creep rupture performance test is a method for detecting the fracture resistance of high-temperature materials. The preparation of high-temperature creep rupture rod-shaped specimens mainly involves turning. Relevant performance testing standards require a surface roughness value of Ra 0.4 μm for these specimens. However, the turned surface of these specimens exhibits annular machining marks, failing to meet the required roughness value. Therefore, longitudinal grinding is necessary. Existing axial polishing devices for high-temperature creep rupture rod-shaped specimens suffer from numerous problems, including large size, complex structure, high cost, and low polishing efficiency. To address this issue, manual sandpaper polishing is often used. This not only fails to guarantee the surface roughness value but also the consistency of the specimen surface, and suffers from severe inefficiency. Utility Model Content

[0004] The technical problem to be solved by this invention is that it is difficult to guarantee the surface roughness of high-temperature and long-lasting rod-shaped samples and the processing efficiency is low. The invention provides a surface polishing device for high-temperature and long-lasting rod-shaped samples to achieve the purpose of high-quality and high-efficiency polishing of high-temperature and long-lasting rod-shaped samples.

[0005] This utility model proposes a surface polishing device for high-temperature durable rod-shaped samples, including a clamping mechanism, a polishing mechanism, a transmission mechanism, a power mechanism, and a device fixing connection mechanism. The clamping mechanism is used to fix and position the high-temperature durable rod-shaped sample, the polishing mechanism is used to polish the test surface of the high-temperature durable rod-shaped sample, the transmission mechanism connects the power mechanism and the polishing mechanism and is used to transmit power to the polishing mechanism, the power mechanism is used to provide power for the entire device, and the device fixing connection mechanism is used to support the entire device and position each mechanism.

[0006] The clamping mechanism includes an upper clamping plate with clamping discs and a lower clamping plate with clamping discs. The clamping discs of the upper and lower clamping plates correspond to each other, forming a fixing through hole for fixing the high-temperature, long-lasting rod-shaped sample. The upper clamping plate has a concave cross-section, corresponding to the protrusions provided in the notch of the lower clamping plate. A knob screw is connected to the upper part of the upper clamping plate. The knob screw passes through the upper baffle of the clamping mechanism and is connected to a knob. By rotating the knob, the movement distance of the upper clamping plate is adjusted, controlling the loosening and clamping of the fixed high-temperature, long-lasting rod-shaped sample. The clamping mechanism fixing screw is connected to the two lower clamping plates and is fixed with the clamping mechanism fixing nut to form a clamping space for positioning the high-temperature, long-lasting rod-shaped sample.

[0007] Furthermore, clamping disc bolts are provided between the clamping disc and the upper clamping plate, and between the clamping disc and the lower clamping plate, for fixing the clamping disc.

[0008] An upper baffle bolt is provided between the upper baffle and the lower baffle of the clamping mechanism to limit the upward movement distance of the upper baffle.

[0009] The polishing mechanism includes a positioning plate, a rotating plate, jaws, a spring, a positioning pin, a slider, a connecting rod, a fixing clamp, and a guide rail. The guide rail is positioned between two clamping lower plates and is parallel to the fixing screw of the clamping mechanism. The two ends of the positioning plate are connected to the slider, which is positioned inside the guide rail and performs reciprocating linear motion. The positioning plate is equipped with a rotating plate, which has multiple jaws. When the rotating plate is rotated, the jaws rotate around the positioning pin, controlling the opening and closing of the multiple jaws. After clamping, the rotating plate and the positioning plate are fixed with a fixing clamp, and the jaws are fixed with a spring. The inner surface of the through hole formed by the multiple jaws is set as a grinding wheel structure, forming a polishing mechanism for polishing high-temperature, long-lasting rod-shaped samples.

[0010] Furthermore, the slider and the connecting rod are connected, with the connecting rod passing through the guide rail. A fixing nut is provided at one end of the connecting rod for fixed connection with the transmission rod.

[0011] The transmission mechanism includes a motor drive rod, drive rod one, drive rod two, drive rod three, drive rod four, and a long connecting rod. One end of the motor drive rod is fixedly connected to a coupling, and the other end of the motor drive rod is sequentially connected to drive rod one, drive rod two, drive rod three, and drive rod four. Drive rod three is connected to the long connecting rod, and drive rod four is connected to the slider. Drive rod one rotates around the motor drive rod, and drive rod two drives drive rod three to swing back and forth around the long connecting rod as the axis. Drive rod four pushes the slider to perform reciprocating linear motion within the guide rail, thereby converting the rotation of the DC motor into the reciprocating linear motion of the slider within the guide rail.

[0012] The power mechanism includes a DC motor, a coupling, a controller, and a DC power supply, with the DC power supply connected to the DC motor via the controller.

[0013] The device fixing connection mechanism includes a base plate, a motor bracket, and a front support plate. The motor bracket and the front support plate are used to fix the clamping mechanism to the base plate.

[0014] Furthermore, the bracket fixing bolts are located at the connection holes between the base plate and the motor bracket, and between the base plate and the front support plate, for fixing the power mechanism and the clamping mechanism to the base plate.

[0015] A method for using a high-temperature, long-lasting rod-shaped sample surface polishing device includes the following steps: Step 1: Fix the high-temperature durable rod-shaped sample on the clamping mechanism, rotate the rotating disk of the grinding and polishing mechanism to close the chucks and fix the chucks with springs. After clamping, fix the rotating disk and the positioning disk with the fixing clamp to ensure that the grinding wheel on the inner surface of the chuck grinding wheel is in close contact with the surface of the high-temperature durable rod-shaped sample to be processed. Step 2: The DC motor drives the transmission rod to rotate through the motor transmission rod, and at the same time, the transmission mechanism pushes the slider to make reciprocating linear motion on the guide rail, which in turn drives the grinding and polishing mechanism to make reciprocating linear motion. Step 3: After grinding and polishing for a certain period of time, remove the high-temperature alloy rod sample and measure the processed surface; Step 4: Determine the surface roughness value obtained from the measurement, and repeat steps 2 and 3 until the surface finish requirement is met.

[0016] The beneficial effects of this utility model are: This utility model uses a connecting rod and slider mechanism to convert the continuous rotation of a DC motor into axial reciprocating motion, thereby realizing the axial polishing of high-temperature, durable rod-shaped samples; the device is small in size, simple in structure, easy to operate, has low maintenance costs, and high polishing efficiency, and has high practical value for quickly and effectively realizing the axial polishing treatment of high-temperature, durable rod-shaped samples. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the high-temperature, long-lasting rod-shaped sample surface polishing device of this utility model; Figure 2 This is a top view of the high-temperature, long-lasting rod-shaped sample surface polishing device of this utility model; Figure 3 This is a schematic diagram showing the clamping mechanism in the released state. Figure 4 for Figure 3 A schematic diagram of the clamping state of the corresponding clamping mechanism; Figure 5 This is a schematic diagram showing the grinding and polishing mechanism in the released state. Figure 6 for Figure 5 Schematic diagram of the clamping state of the corresponding grinding and polishing mechanism; Figure 7This is a three-dimensional structural diagram of the high-temperature, long-lasting rod-shaped sample surface polishing device of this utility model; Figure 8 This is a schematic diagram of the transmission structure of this utility model; Figure 9 This is a three-dimensional view of the high-temperature, long-lasting rod-shaped sample surface polishing device of this utility model; Figure 10 This is a schematic diagram of the clamping upper plate of this utility model; Figure 11 This is a schematic diagram of the clamping lower plate of this utility model; In the above diagram: 101. Upper clamping plate; 102. Lower clamping plate; 103. Clamping mechanism fixing screw; 104. Upper baffle of clamping mechanism; 105. Knob; 106. Knob screw; 107. Clamping disc; 108. Clamping disc bolt; 109. Upper baffle bolt of clamping mechanism; 201. Positioning disc; 202. Rotary disc; 203. Claw; 204. Spring; 205. Positioning pin; 206. Slider; 207. Connecting rod; 208. Fixing nut; 209. Fixing clamp; 2 10. Guide rail; 301. Transmission rod one; 302. Transmission rod two; 303. Transmission rod three; 304. Transmission rod four; 305. Long connecting rod; 306. Connecting rod fixing bolt (sleeve); 307. Motor transmission rod; 401. DC motor; 402. Coupling; 403. Controller; 404. DC power supply; 501. Base plate; 502. Front support plate; 503. Motor bracket; 504. Bracket fixing bolt; 505. Clamping mechanism fixing nut; 6. High-temperature long-lasting rod-shaped specimen. Detailed Implementation

[0018] Example 1 A high-temperature, durable rod-shaped sample surface polishing device includes a clamping mechanism, a polishing mechanism, a transmission mechanism, a power mechanism, and a device fixing connection mechanism. The clamping mechanism is used to fix and position the high-temperature, durable rod-shaped sample. The polishing mechanism is used to polish the test surface portion of the high-temperature, durable rod-shaped sample. The transmission mechanism connects the power mechanism and the polishing mechanism and is used to transmit power to the polishing mechanism. The power mechanism is used to provide power to the entire device. The device fixing connection mechanism is used to support the entire device and position each mechanism.

[0019] The clamping mechanism includes an upper clamping plate 101 with a clamping disc 107 and a lower clamping plate 102 with a clamping disc 107. The clamping discs of the upper clamping plate 101 and the lower clamping plate 102 correspond to each other, forming a fixing through hole for fixing the high-temperature, long-lasting rod-shaped sample. The lower clamping plate has a notch that corresponds to the upper clamping plate. The upper clamping plate 101 has a concave cross-section, which corresponds to the protrusion in the notch of the lower clamping plate 102. A knob screw 106 is connected to the upper part of the upper clamping plate 101. The knob screw 106 passes through the upper baffle 104 of the clamping mechanism and is connected to a knob 105. The movement distance of the upper clamping plate 101 is adjusted by rotating the knob 105 to control the loosening and clamping of the fixed high-temperature, long-lasting rod-shaped sample. The clamping mechanism fixing screw 103 is fixedly connected to the two lower clamping plates 102. After being fixed with the clamping mechanism fixing nut, a clamping space for positioning the high-temperature, long-lasting rod-shaped sample is formed.

[0020] Furthermore, clamping plate bolts 108 are provided between the clamping plate 107 and the upper clamping plate 101, and between the clamping plate 107 and the lower clamping plate 102, for fixing the clamping plate 107.

[0021] An upper baffle bolt 109 is provided between the upper baffle 104 and the lower baffle 102 of the clamping mechanism to limit the upward movement distance of the upper baffle 101.

[0022] The polishing mechanism includes a positioning disk 201, a rotating disk 202, a chuck 203, a spring 204, a positioning pin 205, a slider 206, a connecting rod 207, a fixing clamp 209, and a guide rail 210. The guide rail 210 is disposed between two clamping lower plates 102 and is parallel to the clamping mechanism fixing screw 103. Both ends of the positioning disk 201 are connected to the slider 206. The slider 206 is disposed within the guide rail 210 and performs reciprocating linear motion. The positioning disk 201 is provided with... Rotary disk 202 is equipped with multiple jaws 203. When the rotary disk 202 is rotated, the jaws 203 rotate around the positioning pin 205, controlling the opening and closing of the multiple jaws 203. After clamping, the rotary disk 202 and the positioning disk 201 are fixed with a fixing clamp 209, and the jaws 203 are fixed with a spring 204. The inner surface of the through hole formed by the multiple jaws 203 is set as a grinding wheel structure, forming a grinding and polishing mechanism for grinding and polishing high-temperature durable rod-shaped samples.

[0023] Furthermore, the slider 206 is connected to the connecting rod 207, which passes through the guide rail 210, and a fixing nut 208 is provided at one end of the connecting rod 207 for fixed connection with the transmission rod 304.

[0024] The transmission mechanism includes a motor drive rod 307, a first drive rod 301, a second drive rod 302, a third drive rod 303, a fourth drive rod 304, and a long connecting rod 305. One end of the motor drive rod 307 is fixedly connected to the DC motor 401 via a coupling 402. The other end of the motor drive rod 307 is sequentially connected to the first drive rod 301, the second drive rod 302, the third drive rod 303, and the fourth drive rod 304. The third drive rod 303 is connected to the long connecting rod 305. The fourth drive rod 304 is connected to the slider 206 via a connecting rod 207. The first drive rod 301 rotates around the motor drive rod 307. The second drive rod 302 drives the third drive rod 303 to swing back and forth around the long connecting rod 305. The fourth drive rod 304 pushes the slider 206 to perform reciprocating linear motion within the guide rail 310, thereby converting the rotation of the DC motor 401 into the reciprocating linear motion of the slider 206 within the guide rail 210.

[0025] The power mechanism includes a DC motor 401, a coupling 402, a controller 403, and a DC power supply 404. The DC power supply 404 is connected to the DC motor 401 through the controller 403.

[0026] The device fixing connection mechanism includes a base plate 501, a motor bracket 503, and a front support plate 502. The motor bracket 503 and the front support plate 502 are used to fix the clamping mechanism on the base plate 501.

[0027] Furthermore, the bracket fixing bolts 505 are located at the connection holes between the base plate 501 and the motor bracket 503, and between the base plate 501 and the front support plate 502, for fixing the power mechanism and the clamping mechanism to the base plate.

[0028] Example 2 A high-temperature, durable rod-shaped sample surface polishing device includes an upper clamping plate, a lower clamping plate, a clamping mechanism fixing screw, a clamping mechanism upper baffle, a knob, a knob screw, a clamping disc, a clamping disc bolt, an upper baffle bolt, a positioning disc, a rotating disc, chucks, a spring, a positioning pin, a slider, a connecting rod, a fixing nut, a fixing clamp, a guide rail, transmission rod one, transmission rod two, transmission rod three, transmission rod four, a long connecting rod, a connecting rod fixing bolt (sleeve), a motor transmission rod, a DC motor, a coupling, a controller, a DC power supply, a base plate, a front support plate, a motor bracket, bracket fixing bolts, and a clamping mechanism fixing nut. The DC motor drives transmission rod one to rotate via the motor transmission rod, and simultaneously pushes the slider to reciprocate linearly on the guide rail via the transmission mechanism, thereby driving the polishing mechanism to reciprocate linearly, performing surface polishing on the high-temperature, durable rod-shaped sample.

[0029] The specific implementation steps of a high-temperature, long-lasting rod-shaped sample surface polishing device include: Step 1: Fix the high-temperature durable rod-shaped sample on the clamping mechanism, rotate the rotating disk in the grinding and polishing mechanism to close the chuck and fix it with the spring. After clamping, fix the rotating disk and the positioning disk with the fixing clamp to ensure that the grinding wheel on the inner surface of the chuck grinding wheel is in close contact with the surface of the high-temperature durable rod-shaped sample to be processed. Step 2: The DC motor drives the transmission rod to rotate through the motor transmission rod, and at the same time, the transmission mechanism pushes the slider to make reciprocating linear motion on the guide rail, which in turn drives the grinding and polishing mechanism to make reciprocating linear motion. Step 3: After grinding and polishing for a certain period of time, remove the high-temperature alloy rod sample and measure the processed surface; Step 4: Determine the surface roughness value obtained from the measurement, and repeat steps 2 and 3 until the surface finish requirement is met.

Claims

1. A high-temperature, long-lasting grinding and polishing device for rod-shaped sample surfaces, characterized in that: The high-temperature durable rod-shaped sample surface polishing device includes a clamping mechanism, a polishing mechanism, a transmission mechanism, a power mechanism, and a device fixing connection mechanism. The clamping mechanism is used to fix and position the high-temperature durable rod-shaped sample. The polishing mechanism is used to polish the test surface of the high-temperature durable rod-shaped sample. The transmission mechanism connects the power mechanism and the polishing mechanism and is used to transmit power to the polishing mechanism. The power mechanism is used to provide power to the entire device. The device fixing connection mechanism is used to support the entire device and position each mechanism. The transmission mechanism includes a motor drive rod, drive rod one, drive rod two, drive rod three, drive rod four, and a long connecting rod. One end of the motor drive rod is fixedly connected to a coupling, and the other end of the motor drive rod is sequentially connected to drive rod one, drive rod two, drive rod three, and drive rod four. Drive rod three is connected to the long connecting rod, and drive rod four is connected to the slider. Drive rod one rotates around the motor drive rod, and drive rod two drives drive rod three to swing back and forth around the long connecting rod as the axis. Drive rod four pushes the slider to perform reciprocating linear motion in the guide rail, thereby converting the rotation of the DC motor into the reciprocating linear motion of the slider in the guide rail.

2. The high-temperature, long-lasting rod-shaped sample surface polishing device according to claim 1, characterized in that: The clamping mechanism includes an upper clamping plate with clamping discs and a lower clamping plate with clamping discs. The clamping discs of the upper and lower clamping plates correspond to each other, forming a fixing through hole for fixing the high-temperature, long-lasting rod-shaped sample. The upper clamping plate has a concave cross-section, corresponding to the protrusions provided in the notch of the lower clamping plate. A knob screw is connected to the upper part of the upper clamping plate. The knob screw passes through the upper baffle of the clamping mechanism and is connected to a knob. By rotating the knob, the movement distance of the upper clamping plate is adjusted, controlling the loosening and clamping of the fixed high-temperature, long-lasting rod-shaped sample. The clamping mechanism fixing screw is connected to the two lower clamping plates and is fixed with the clamping mechanism fixing nut to form a clamping space for positioning the high-temperature, long-lasting rod-shaped sample.

3. The high-temperature, long-lasting rod-shaped sample surface polishing device according to claim 2, characterized in that: Clamping plate bolts are provided between the clamping plate and the upper clamping plate, and between the clamping plate and the lower clamping plate, for fixing the clamping plate; An upper baffle bolt is provided between the upper baffle and the lower baffle of the clamping mechanism to limit the upward movement distance of the upper baffle.

4. The high-temperature, long-lasting rod-shaped sample surface polishing device according to claim 1, characterized in that: The polishing mechanism includes a positioning plate, a rotating plate, jaws, a spring, a positioning pin, a slider, a connecting rod, a fixing clamp, and a guide rail. The guide rail is positioned between two clamping lower plates and is parallel to the fixing screw of the clamping mechanism. The two ends of the positioning plate are connected to the slider, which is positioned inside the guide rail and performs reciprocating linear motion. The positioning plate is equipped with a rotating plate, which has multiple jaws. When the rotating plate is rotated, the jaws rotate around the positioning pin, controlling the opening and closing of the multiple jaws. After clamping, the rotating plate and the positioning plate are fixed with a fixing clamp, and the jaws are fixed with a spring. The inner surface of the through hole formed by the multiple jaws is set as a grinding wheel structure, forming a polishing mechanism for polishing high-temperature, long-lasting rod-shaped samples.

5. The high-temperature, long-lasting rod-shaped sample surface polishing device according to claim 4, characterized in that: The slider and the connecting rod are connected, and the connecting rod passes through the guide rail. A fixing nut is set at one end of the connecting rod for fixed connection with the transmission rod.

6. The high-temperature, long-lasting rod-shaped sample surface polishing device according to claim 1, characterized in that: The power mechanism includes a DC motor, a coupling, a controller, and a DC power supply, with the DC power supply connected to the DC motor via the controller.

7. The high-temperature, long-lasting rod-shaped sample surface polishing device according to claim 1, characterized in that: The device fixing connection mechanism includes a base plate, a motor bracket, and a front support plate. The motor bracket and the front support plate are used to fix the clamping mechanism to the base plate.

8. The high-temperature, long-lasting rod-shaped sample surface polishing device according to claim 7, characterized in that: The bracket fixing bolts are located at the connection holes between the base plate and the motor bracket, and between the base plate and the front support plate, and are used to fix the power mechanism and the clamping mechanism to the base plate.

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