Isostatic pressing graphite surface treatment equipment and treatment process thereof

Abstract

The invention relates to the technical field of graphite processing equipment, and discloses isostatic pressing graphite surface treatment equipment and a treatment process thereof, which are used for realizing an efficient and high-precision surface treatment effect. The equipment comprises a telescopic clamp, a double-sided grinding mechanism and a pressure adapter. Wherein the telescopic clamp is used for accurately clamping an isostatic pressing graphite workpiece, and chippings are prevented from entering through a closed adjusting groove; the double-face grinding mechanism is composed of an annular grinding belt, a friction roller and a tension adjusting assembly, efficient grinding can be achieved, and constant tension can be kept. The pressure adapter generates external pressure through the hydraulic system, and it is ensured that the annular grinding belt is tightly attached to the surface of the workpiece. According to the equipment, through innovative design and technical application, high-precision surface treatment of the isostatic pressing graphite workpiece is achieved, the treatment efficiency is remarkably improved, and the frequency of cleaning and maintenance is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of graphite processing equipment, and specifically provides an isostatic graphite surface treatment device and its treatment process. Background Art

[0002] Isostatic graphite has excellent isotropy due to its isostatic pressing forming process, that is, the material properties do not change with size, shape or sampling direction, and the isotropy degree is between 1.0 and 1.1. This property is affected by factors such as heat treatment, powder uniformity and forming process, and the outside is better than the inside after heat treatment. Isostatic graphite is also known for its large size and fine structure. The uniform distribution of pressure reduces the risk of cracking and ensures the homogeneity of the material, that is, the internal structure is uniform and the performance indicators are consistent.

[0003] During the preparation of isostatic graphite, various impurities will be mixed on the surface, and burrs or protrusions will also appear on the outer layer of the processed product. Therefore, it is necessary to manually remove the burrs on the surface.

[0004] Graphite is widely used in engineering fields such as lubrication, insulation, and fire resistance. Its surface smoothness has an important impact on its performance. The surface of isostatic graphite has problems such as indentations or frosting, which severely restrict its engineering applications. Therefore, high-precision surface treatment technology has important research significance.

[0005] Traditional surface treatment mostly uses manual treatment, scraping the surface impurities and burrs with a scraper; it cannot meet the high-precision surface treatment requirements for isostatic graphite materials.

[0006] When existing equipment is used for the surface treatment of isostatic graphite, methods such as high-pressure cleaning and sandblasting are usually adopted. However, due to problems such as low treatment efficiency, high cost, easy damage and brittleness of graphite materials, these methods have not been widely used.

[0007] In actual production, the surface is often treated by grinding, but there are still the following limitations: one is that traditional jigs are prone to cause workpiece sliding due to unstable clamping, affecting the surface treatment effect; the other is that the grinding equipment lacks a fast, efficient and high-precision grinding mechanism, resulting in low treatment efficiency.

[0008] Therefore, we propose an isostatic graphite surface treatment device and its treatment process to solve the problems in the above background. Summary of the Invention

[0009] The purpose of the present invention is to provide an isostatic graphite surface treatment device and its treatment process to solve the problem that the existing technology lacks an efficient and high-precision treatment technology for the surface of isostatic graphite as proposed in the above background technology.

[0010] To solve the above technical problems, the present invention provides the following technical solutions:

[0011] Preferably, an isostatic graphite surface treatment device and its treatment process include a workbench, on which a telescopic fixture is arranged. Outside the telescopic fixture, there is a double-sided grinding mechanism for isostatic graphite surface treatment. The double-sided grinding mechanism is stably installed on the workbench, and outside the double-sided grinding mechanism, there is a pressure adapter for controlling the fitting of the double-sided grinding mechanism to the surface of isostatic graphite.

[0012] Preferably, the double-sided grinding mechanism includes an annular grinding belt. At both ends of the annular grinding belt, there are friction rollers for driving the rotation of the annular grinding belt, and a tension adjustment component is installed between the two friction rollers.

[0013] Preferably, the tension adjustment component is fixedly installed inside one end of the workbench close to the annular grinding belt. The tension adjustment component includes a guide rail, inside which a bidirectional lead screw is rotatably connected. The bidirectional lead screw is fixedly connected by two symmetrically arranged screw rods. One end of the bidirectional lead screw is equipped with a servo motor, and the servo motor is fixedly installed at one end of the guide rail.

[0014] Preferably, sliding seats are symmetrically arranged at both ends of the bidirectional lead screw. On the sliding seats, there are roller seats for rotatably supporting the friction rollers. Inside one end of the roller seat close to the sliding seat, a stepper motor is fixedly installed, and the stepper motor drives the rotation of the friction roller. Inside the other end of the roller seat far from the stepper motor, a rotating groove is opened, and inside the rotating groove, there is a bearing for rotatably supporting the friction roller. One end of the friction roller is installed inside the bearing.

[0015] An isostatic graphite surface treatment process includes the following steps:

[0016] Step 1: The first clamping plate and the second clamping plate of the telescopic fixture extend to clamp the isostatic graphite workpiece, and after contraction, it is fixed on the workbench, and the workpiece is located inside the annular grinding belt.

[0017] Step 2: Start the servo motor of the tension adjustment component to drive the bidirectional lead screw to rotate, drive the sliding seats to move synchronously and in opposite directions along the guide rail, adjust the distance between the friction rollers, and make the annular grinding belt reach the preset tension.

[0018] Step 3: Start the electric push rods of the pressure adapters on both sides to push the hydraulic box towards the workpiece. After the sliding film contacts the annular grinding belt, detect the pressure through the hydraulic sensor and adjust the input amount of hydraulic oil to make the sliding film expand flexibly and push the annular grinding belt to completely fit the surface of the workpiece.

[0019] Step 4: Start the stepper motor of the friction roller to drive the annular grinding belt to rotate at high speed, and at the same time maintain the constant pressure of the pressure adapter to synchronously deburr and polish the two sides of the workpiece surface.

[0020] Step Five: During the grinding process, the pressure of the sliding film is monitored in real time through a hydraulic sensor. If the pressure deviates from the set threshold, the position of the hydraulic box is finely adjusted through an electric push rod to ensure the stable fitting pressure between the annular grinding belt and the workpiece surface;

[0021] Step Six: The debris generated by grinding is thrown outwards by the rotational centrifugal force of the annular grinding belt and collected centrally by the negative pressure dust suction device at the bottom of the workbench;

[0022] Step Seven: After the grinding is completed, release the telescopic fixture, take out the workpiece, and the telescopic plate automatically resets to close the adjustment slot to prevent debris from entering.

[0023] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0024] The isostatic graphite surface treatment equipment and process of the present invention adopt a number of innovative technologies, significantly improving the processing efficiency and quality of the graphite surface. First, the design of the telescopic fixture effectively prevents debris generated during the grinding process from entering the workbench through its closing structure, reducing the maintenance frequency; second, the double-sided grinding mechanism realizes efficient and stable grinding effects through the rotation and pressure adjustment of the friction rollers, ensuring uniform polishing and deburring of the graphite curved surface; third, the pressure adapter realizes the adaptive adjustment of the pressure on the annular grinding belt through the hydraulic system, accurately fitting the graphite workpiece and preventing abrasive grains from splashing due to changes in the curved surface shape; finally, the overall design of the equipment pays attention to environmental protection. After the abrasive grains are thrown out by the centrifugal force, they are centrally collected by the negative pressure system, reducing environmental pollution.

[0025] Clamp the isostatic graphite workpiece with the telescopic fixture and adjust the clamping force to achieve the axial alignment of the workpiece and the grinding belt. Then, start the drive system of the double-sided grinding mechanism, and the friction rollers rotate to drive the annular grinding belt to move at high speed, completing the polishing and deburring treatment on both sides of the graphite. At the same time, the pressure adapter realizes continuous fitting and stable tension of the grinding belt through hydraulic adjustment. During the grinding process, the pressure sensor detects and feeds back the pressure changes in real time, and the electric push rod cooperates to adjust to ensure a constant flat pressure, avoiding deviation or debris splashing. Finally, through the action of centrifugal force, the debris generated by grinding is evenly thrown out to the collection device, realizing a clean operation. The equipment operates efficiently and has excellent processing effects. Brief Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the overall external structure of the present invention;

[0027] Figure 2 It is a schematic top view structure of the present invention;

[0028] Figure 3 It is a schematic side sectional view structure of the present invention;

[0029] Figure 4For the present invention Figure 3 Schematic diagram of a partially enlarged structure

[0030] Figure 5 Schematic diagram of a top-down sectional structure of the present invention

[0031] Wherein: 1, workbench; 2, first clamping plate; 3, second clamping plate; 4, linear slide; 5, lifting column; 6, lifting table; 7, telescopic plate; 8, telescopic groove; 9, annular grinding belt; 10, friction roller; 101, guide rail; 102, bidirectional lead screw; 103, sliding seat; 104, roller seat; 105, stepper motor; 106, bearing; 107, pressure sensor; 11, hydraulic box; 12, sliding film; 13, electric push rod; 14, hydraulic sensor; 15, hydraulic pipe; 17, circular arc chamfer; 18, servo motor Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0033] Embodiment 1

[0034] Please refer to Figures 1-5 The present invention provides a technical solution

[0035] An isostatic graphite surface treatment device includes a workbench 1, a telescopic fixture is arranged on the workbench 1, a double-sided grinding mechanism for isostatic graphite surface treatment is arranged outside the telescopic fixture, the double-sided grinding mechanism is stably installed on the workbench 1, and a pressure adapter for controlling the fitting of the double-sided grinding mechanism to the surface of the isostatic graphite is installed outside the double-sided grinding mechanism

[0036] The isostatic graphite surface treatment device realizes efficient and high-precision surface treatment effects through a series of innovative designs and technical applications. First, the telescopic fixture in the device drives the first clamping plate 2 and the second clamping plate 3 to extend from the adjustment groove through the linear slide 4, accurately clamping the isostatic graphite workpiece. The lifting column 5 controls the height of the clamping plate to ensure that the workpiece is aligned with the annular grinding belt 9. After clamping, the clamping plate contracts into the adjustment groove, fixing the workpiece on the workbench 1. This design not only improves the clamping accuracy, but also closes the adjustment groove through the telescopic plate 7, effectively preventing the debris generated by grinding from entering, and significantly reducing the frequency of cleaning and maintenance

[0037] The double-sided grinding mechanism includes an annular grinding belt 9. Friction rollers 10 for driving the rotation of the annular grinding belt 9 are installed at both ends of the annular grinding belt 9. A tension adjustment component is installed between the two friction rollers 10. The tension adjustment component is fixedly installed inside one end of the workbench 1 close to the annular grinding belt 9. The tension adjustment component includes a guide rail 101. A bidirectional lead screw 102 is rotatably connected inside the guide rail 101. The bidirectional lead screw 102 is composed of two symmetrically arranged screw rods fixedly connected. One end of the bidirectional lead screw 102 is installed with a servo motor 18. The servo motor 18 is fixedly installed at one end of the guide rail 101. Sliding seats 103 are symmetrically arranged at both ends of the bidirectional lead screw 102. A roller seat 104 for rotatably supporting the friction roller 10 is installed on the sliding seat 103. A stepping motor 105 is fixedly installed inside one end of the roller seat 104 close to the sliding seat 103. The stepping motor 105 drives the rotation of the friction roller 10. A rotation groove is opened inside the other end of the roller seat 104 away from the stepping motor 105. A bearing 106 for rotatably supporting the friction roller 10 is installed inside the rotation groove. One end of the friction roller 10 is installed inside the bearing 106. The sliding seat 103 is L-shaped. The sliding seat 103 includes a slider and a traction block. The slider is threadedly connected to the outside of the bidirectional lead screw 102. The traction block is fixedly connected to the side of the slider close to the annular grinding belt 9. The traction block is fixedly connected to the side surface of the roller seat 104. A pressure sensor 107 for detecting the pressure between the traction block and the roller seat 104 is installed between the traction block and the roller seat 104.

[0038] The double-sided grinding mechanism is another major highlight of the equipment. The stepping motor 105 drives the rotation of the friction roller 10, driving the annular grinding belt 9 to move at high speed to achieve efficient grinding. The servo motor 18 adjusts the distance between the friction rollers 10 through the bidirectional lead screw 102, and cooperates with the pressure sensor 107 to detect and adjust the tension of the grinding belt in real time to ensure a constant tension. One end of the friction roller 10 is driven by the stepping motor 105, and the other end is supported by the bearing 106, reducing vibration and improving the stability of grinding.

[0039] The telescopic fixture is installed below the annular grinding belt 9. An adjustment groove is opened at one end of the workbench 1 close to the annular grinding belt 9. The telescopic fixture is installed inside the adjustment groove. The telescopic fixture includes a first clamping plate 2 and a second clamping plate 3. A telescopic plate 7 is arranged at one end of the adjustment groove close to the annular grinding belt 9. Telescopic grooves 8 are respectively opened at both ends of the telescopic plate 7. The first clamping plate 2 and the second clamping plate 3 are parallel to each other and are both perpendicular to the telescopic plate 7. The first clamping plate 2 and the second clamping plate 3 are correspondingly slidably connected inside the two telescopic grooves 8. A lifting column 5 is fixedly installed inside one end of the telescopic groove 8 of the telescopic plate 7. The telescopic end of the lifting column 5 is fixedly connected with a lifting table 6. A linear slide 4 for driving the first clamping plate 2 and the second clamping plate 3 to approach or move away from each other is installed inside the lifting table 6.

[0040] The specific working mode of the telescopic fixture:

[0041] Initial state: When the workpiece is not clamped, all components of the telescopic fixture are in a contracted state. The first clamping plate 2 and the second clamping plate 3 are driven by the linear slide 4 to move away from each other, that is, horizontally separated. The telescopic end of the lifting column 5 drives the lifting table 6 to move down to the bottom of the adjustment groove. The telescopic plate 7 contracts with the lifting table 6, completely closing the opening of the adjustment groove to prevent debris from entering.

[0042] Clamping stage: When the workpiece needs to be clamped, the lifting column 5 pushes up the lifting table 6, driving the telescopic plate 7 fixed thereto to rise synchronously, so that the first clamping plate 2 and the second clamping plate 3 are exposed above the workbench 1 from the adjustment groove. The linear slide 4 drives the first clamping plate 2 and the second clamping plate 3 to slide horizontally towards each other along the track of the telescopic groove 8 until the two clamping plates contact and firmly clamp the workpiece. At this time, the clamping force is controlled by the torque of the slide servo motor 18.

[0043] After clamping, the lifting column 5 slowly contracts, driving the clamping plate and the workpiece as a whole to sink to the processing position of the workbench 1 (inside the annular grinding belt 9), ensuring that the surface of the workpiece is centered with the axis of the grinding belt.

[0044] During the downward movement of the lifting table 6, the telescopic plate 7 follows to cover the opening of the adjustment groove, and the gap between it and the groove wall is sealed by an elastic sealing strip to prevent grinding debris from invading the inside of the track.

[0045] There are two groups of pressure adapters, which are respectively located on both sides of the annular grinding belt 9. The pressure adapter includes a hydraulic box 11. One end of the hydraulic box 11 close to the annular grinding belt 9 is provided with a sliding film 12. The sliding film 12 is made of a soft and smooth material. One end of the hydraulic box 11 away from the annular grinding belt 9 is installed with an electric push rod 13. One end of the electric push rod 13 away from the hydraulic box 11 is fixedly connected to the workbench 1. One end of the hydraulic box 11 in contact with the annular grinding belt 9 is provided with a circular arc chamfer 17, which is beneficial for the annular grinding belt 9 to rotate through the side of the hydraulic box 11 where the sliding film 12 is installed. The inside of the hydraulic box 11 is provided with a cavity and is connected with a hydraulic pipe 15. A hydraulic sensor 14 is installed inside the hydraulic box 11. The hydraulic pipe 15 inputs hydraulic oil into the inside of the hydraulic box 11 to make the sliding film 12 generate an external pressure.

[0046] The specific working mode of the pressure adapter is as follows:

[0047] When starting the equipment, the electric push rod 13 pushes the hydraulic box 11 towards the annular grinding belt 9 until the sliding film 12 at the front end of the hydraulic box 11 contacts the grinding belt. The sliding film 12 is made of a smooth and soft material, but no obvious pressure is applied, and it is in a pre-contact state. At this time, the design of the circular arc chamfer 17 ensures that there is no mechanical interference when the grinding belt rotates.

[0048] The hydraulic pump injects hydraulic oil into the cavity of the hydraulic box 11 through the hydraulic pipe 15, pushing the sliding film 12 to expand outwards, and the expansion amount can reach 10 - 30 mm. The flexible characteristic of the sliding film 12 enables it to closely adhere to the grinding belt and adaptively deform according to the surface shape of the workpiece.

[0049] The hydraulic sensor 14 in the hydraulic box 11 monitors the pressure in the cavity in real time. The pressure range in the hydraulic box 11 is 0.1 - 10 MPa, and the signal is fed back to the control system. If the pressure is lower than the set value, such as when encountering a concave part of the surface, the oil injection amount is increased; if the pressure is too high, such as when encountering a convex part, the pressure is relieved through the solenoid valve to maintain a constant contact pressure.

[0050] When the pressure fluctuates due to wear or curvature change of the annular grinding belt 9, the electric push rod 13 cooperates with the hydraulic system to finely adjust the front - rear position of the hydraulic box 11, compensating for the limit of the expansion amount of the sliding film 12 to ensure that the grinding belt always closely adheres to the surface of the workpiece.

[0051] The working principle of this isostatic graphite surface treatment equipment is as follows: The equipment first clamps the isostatic graphite workpiece through a telescopic fixture. When the workpiece needs to be clamped, the lifting column 5 drives the telescopic plate 7 to rise, so that the first clamping plate 2 and the second clamping plate 3 extend out of the adjustment groove, and the clamping plates are driven to slide horizontally towards each other through the linear slide 4 until the two clamping plates contact and firmly clamp the workpiece. At this time, the clamping force is controlled by the torque of the motor of the linear slide 4. The lifting column 5 contracts, driving the clamping plate and the workpiece to sink as a whole to the processing position of the workbench 1 to ensure that the surface of the workpiece is centered with the axis of the grinding belt.

[0052] The double - sided grinding mechanism is the core part of the equipment, mainly composed of an annular grinding belt 9, a friction roller 10, a tension adjustment component, etc. The stepping motor 105 drives the friction roller 10 to rotate, driving the annular grinding belt 9 to move at a high speed to achieve efficient grinding. The servo motor 18 adjusts the distance between the friction rollers 10 through the bidirectional lead screw 102, and cooperates with the pressure sensor 107 to detect and adjust the tension of the grinding belt in real time to ensure that the tension is constant.

[0053] In order to adapt to the surface shape of the isostatic graphite workpiece, two groups of pressure adapters are provided, located on both sides of the annular grinding belt 9 respectively. Through the hydraulic system, an external pressure is generated to make the sliding film 12 closely adhere to the grinding belt and adaptively deform according to the surface shape.

[0054] The hydraulic sensor 14 monitors the pressure inside the cavity in real time. When the pressure is lower than the set value or too high, the control system will adjust the oil injection volume or relieve the pressure to maintain a constant contact pressure. The electric push rod 13 cooperates with the hydraulic system to finely adjust the front and rear positions of the hydraulic box 11, compensating for the limit of the expansion amount of the sliding film 12 to ensure that the grinding belt always fits tightly against the workpiece surface; The telescopic fixture is designed with a closed adjustment groove, effectively preventing the debris generated during grinding from entering and reducing the frequency of cleaning and maintenance. The isostatic graphite surface treatment equipment realizes workpiece clamping through the telescopic fixture, high-efficiency grinding through the double-sided grinding mechanism, and curved surface fitting through the pressure adapter, thereby realizing high-precision surface treatment of isostatic graphite workpieces and doubling the processing efficiency.

[0055] An isostatic graphite surface treatment process includes the following steps:

[0056] Step 1: The first clamping plate 2 and the second clamping plate 3 of the telescopic fixture extend to clamp the isostatic graphite workpiece. After contraction, it is fixed on the workbench 1, and the workpiece is located inside the annular grinding belt 9;

[0057] Step 2: Start the servo motor 18 of the tension adjustment component, drive the bidirectional lead screw 102 to rotate, drive the sliding seat 103 to move synchronously and reversely along the guide rail 101, adjust the distance between the friction rollers 10, and make the annular grinding belt 9 reach the preset tension;

[0058] Step 3: Start the electric push rods 13 of the pressure adapters on both sides, push the hydraulic box 11 towards the workpiece. After the sliding film 12 contacts the annular grinding belt 9, detect the pressure through the hydraulic sensor 14 and adjust the hydraulic oil input volume to make the sliding film 12 expand flexibly and push the annular grinding belt 9 to completely fit the workpiece surface;

[0059] Step 4: Start the stepping motor 105 of the friction roller 10, drive the annular grinding belt 9 to rotate at high speed, and at the same time maintain a constant pressure of the pressure adapter to synchronously deburr and polish the two sides of the workpiece surface;

[0060] Step 5: During the grinding process, the pressure of the sliding film 12 is monitored in real time through the hydraulic sensor 14. If the pressure deviates from the set threshold, the position of the hydraulic box 11 is finely adjusted through the electric push rod 13 to ensure the stable fitting pressure between the annular grinding belt 9 and the workpiece surface;

[0061] Step 6: The debris generated during grinding is thrown outwards by the centrifugal force of the rotation of the annular grinding belt 9 and is centrally collected by the negative pressure dust collection device at the bottom of the workbench 1;

[0062] Step 7: After the grinding is completed, release the telescopic fixture, take out the workpiece, and the telescopic plate 7 automatically resets to close the adjustment groove to prevent debris from entering.

[0063] Although specific embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these specific embodiments without departing from the principle and spirit, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An isostatic graphite surface treatment device, comprising a workbench (1), characterized in that: A telescopic fixture is arranged on the workbench (1), and a double-sided grinding mechanism for isostatic graphite surface treatment is arranged outside the telescopic fixture. The double-sided grinding mechanism is stably installed on the workbench (1), and a pressure adapter for controlling the fitting of the double-sided grinding mechanism with the surface of the isostatic graphite is installed outside the double-sided grinding mechanism.

2. The isostatic graphite surface treatment equipment according to claim 1, characterized in that: The double-sided grinding mechanism includes an annular grinding belt (9), and friction rollers (10) for driving the annular grinding belt (9) to rotate are installed at both ends of the annular grinding belt (9). A tension adjusting assembly is installed between the two friction rollers (10).

3. An isostatic graphite surface treatment device according to claim 2, characterized in that: The tension adjusting assembly is fixedly installed inside one end of the workbench (1) close to the annular grinding belt (9). The tension adjusting assembly includes a guide rail (101), and a bidirectional lead screw (102) is rotatably connected inside the guide rail (101). The bidirectional lead screw (102) is fixedly connected by two symmetrically arranged screw rods. A servo motor (18) is installed at one end of the bidirectional lead screw (102), and the servo motor (18) is fixedly installed at one end of the guide rail (101).

4. An isostatic graphite surface treatment device according to claim 3, characterized in that: Sliding seats (103) are symmetrically arranged at both ends of the bidirectional lead screw (102). A roller seat (104) for rotatably supporting the friction roller (10) is installed on the sliding seat (103). A stepping motor (105) is fixedly installed inside one end of the roller seat (104) close to the sliding seat (103). The stepping motor (105) drives the friction roller (10) to rotate. A rotating groove is opened inside the other end of the roller seat (104) away from the stepping motor (105), and a bearing (106) for rotatably supporting the friction roller (10) is installed inside the rotating groove. One end of the friction roller (10) is installed inside the bearing (106).

5. An isostatic graphite surface treatment device according to claim 4, characterized in that: The sliding seat (103) is L-shaped. The sliding seat (103) includes a slider and a traction block. The slider is threadedly connected to the outside of the bidirectional lead screw (102), and the traction block is fixedly connected to the side of the slider close to the annular grinding belt (9).

6. The isostatic graphite surface treatment equipment according to claim 5, characterized in that: The traction block is fixedly connected to the side surface of the roller seat (104), and a pressure sensor (107) for detecting the pressure between the traction block and the roller seat (104) is installed between the traction block and the roller seat (104).

7. An isostatic graphite surface treatment device according to claim 1, characterized in that: The telescopic fixture is installed below the annular grinding belt (9). An adjustment groove is opened at one end of the workbench (1) close to the annular grinding belt (9), and the telescopic fixture is installed inside the adjustment groove.

8. An isostatic graphite surface treatment device according to claim 6, characterized in that: The telescopic fixture includes a first clamping plate (2) and a second clamping plate (3). A telescopic plate (7) is arranged at one end of the adjustment groove close to the annular grinding belt (9). Telescopic grooves (8) are respectively opened at both ends of the telescopic plate (7). The first clamping plate (2) and the second clamping plate (3) are parallel and perpendicular to the telescopic plate (7) together. The first clamping plate (2) and the second clamping plate (3) are correspondingly slidably connected inside the two telescopic grooves (8). A lifting column (5) is fixedly installed inside one end of the telescopic plate (7) of the telescopic groove (8). The telescopic end of the lifting column (5) is fixedly connected to a lifting table (6), and a linear slide (4) for driving the first clamping plate (2) and the second clamping plate (3) to approach or separate is installed inside the lifting table (6).

9. An isostatic graphite surface treatment device according to claim 8, characterized in that: There are two sets of pressure adapters, which are respectively located on both sides of the annular grinding belt (9). The pressure adapter includes a hydraulic box (11). One end of the hydraulic box (11) close to the annular grinding belt (9) is provided with a sliding film (12). The sliding film (12) is made of a soft and smooth-surfaced material. One end of the hydraulic box (11) away from the annular grinding belt (9) is installed with an electric push rod (13). One end of the electric push rod (13) away from the hydraulic box (11) is fixedly connected to the workbench (1). One end of the hydraulic box (11) in contact with the annular grinding belt (9) is provided with an arc chamfer (17). The inside of the hydraulic box (11) is provided with a cavity and is connected to a hydraulic pipe (15). A hydraulic sensor (14) is installed inside the hydraulic box (11). The hydraulic pipe (15) inputs hydraulic oil into the inside of the hydraulic box (11) to make the sliding film (12) generate an external pressure.

10. An isostatic graphite surface treatment process for the isostatic graphite surface treatment equipment according to any one of claims 1-9, characterized in that, Including the following steps: Step 1: The first clamping plate (2) and the second clamping plate (3) of the telescopic fixture extend to clamp the isostatic graphite workpiece. After contraction, it is fixed on the workbench (1), and the workpiece is located inside the annular grinding belt (9). Step 2: Start the servo motor (18) of the tension adjustment component, drive the bidirectional lead screw (102) to rotate, drive the sliding seat (103) to move synchronously and reversely along the guide rail (101), adjust the distance between the friction rollers (10), and make the annular grinding belt (9) reach the preset tension. Step 3: Start the electric push rods (13) of the pressure adapters on both sides, push the hydraulic box (11) to move towards the workpiece. After the sliding film (12) contacts the annular grinding belt (9), detect the pressure through the hydraulic sensor (14) and adjust the hydraulic oil input volume to make the sliding film (12) expand flexibly and push the annular grinding belt (9) to completely fit the surface of the workpiece. Step 4: Start the stepping motor (105) of the friction roller (10), drive the annular grinding belt (9) to rotate at a high speed, and at the same time maintain a constant pressure of the pressure adapter to synchronously deburr and polish the two sides of the workpiece surface. Step 5: During the grinding process, the pressure of the sliding film (12) is monitored in real time through the hydraulic sensor (14). If the pressure deviates from the set threshold, the position of the hydraulic box (11) is finely adjusted through the electric push rod (13) to ensure the stable fitting pressure between the annular grinding belt (9) and the workpiece surface. Step 6: The debris generated by grinding is thrown outwards by the rotational centrifugal force of the annular grinding belt (9) and is centrally collected by the negative pressure dust collection device at the bottom of the workbench (1). Step 7: After the grinding is completed, release the telescopic fixture, take out the workpiece, and the telescopic plate (7) automatically resets to close the adjustment slot to prevent debris from entering.

Images