High-precision flexible intelligent zero-point clamp for graphite

Abstract

The invention relates to a high-precision flexible intelligent zero-point clamp for graphite, and relates to the technical field of flexible intelligent zero-point clamps. Comprising a bottom table and a grinding table, a mounting table is mounted at the top of the bottom table, a top table is vertically arranged in the bottom table in a limiting sliding mode, limiting beads are arranged in the bottom table, a placing table is inserted into the top end of the mounting table, and an adjusting plate is mounted in the placing table. According to the graphite piece clamping device, graphite pieces of different specifications can be flexibly clamped through the rotating plate, the sliding table, the support and the flexible clamping mechanism, the flexible clamping area can be synchronously adjusted when the specifications of the graphite pieces are gradually reduced, and when the specifications of the graphite pieces are gradually reduced, the sliding table drives the clamping mechanism to synchronously contract; the clamping area is always attached to the effective stress face of the graphite piece, and local stress concentration caused by the too large clamping area is avoided.

Description

A high-precision flexible intelligent zero-point fixture for graphite Technical Field

[0001] This invention relates to the field of flexible intelligent zero-point fixture technology, specifically a high-precision flexible intelligent zero-point fixture for graphite. Background Technology

[0002] In the fields of automated production and precision machining, zero-point fixtures, as core tooling components connecting precision grinding equipment and graphite workpieces, undertake the crucial functions of positioning, clamping, benchmark unification, and attitude control. Their positioning accuracy, clamping stability, and automation adaptability directly determine the processing accuracy, grinding efficiency, and production line intelligence level of the grinding equipment. They are widely used in high-end grinding scenarios such as fine grinding of graphite electrode end faces, polishing of precision graphite mold cavities, edge grinding of semiconductor graphite heat sinks, and fine polishing of curved surfaces of aerospace graphite structural components. Among these, the performance requirements for zero-point fixtures and their auxiliary fixtures are even more stringent in the precision grinding of graphite parts—graphite materials… Due to its unique advantages such as high temperature resistance, excellent thermal conductivity, strong chemical stability, easy control of processing precision, and adjustable electrical conductivity, graphite is widely used to manufacture various high-precision graphite parts. The grinding process is the core link that determines the surface roughness, dimensional accuracy, and edge quality of graphite parts. It requires high-precision grinding equipment (such as CNC grinding wheel grinders, ultrasonic precision polishing machines, and laser grinding machines) to achieve micron-level processing. However, the inherent material characteristics of graphite, such as high brittleness and susceptibility to dust pollution, place extremely high demands on the compatibility and adaptability of grinding equipment and matching fixtures. Existing zero-point auxiliary fixtures are no longer able to match the high-precision processing requirements of grinding equipment, and the pain points in the industry are becoming increasingly prominent.

[0003] However, when grinding graphite parts, some existing zero-point jigs are inconvenient to precisely adjust the clamping force of the jaws, which can easily lead to chipping and corner breakage due to improper clamping. Furthermore, they do not provide sufficient protection for the highly brittle graphite parts. Graphite materials have low tensile strength and high brittleness. When the clamping force exceeds the workpiece's tolerance threshold, the local pressure of the jaws can cause the bonding force between graphite grains to break, resulting in edge chipping, corner damage, and an increased chipping rate. On the other hand, the debris and dust generated during the grinding of graphite parts can easily accumulate on the jig surface. Dust generated during the processing of graphite parts can easily penetrate the jig gap, affecting the jig's positioning accuracy and service life. Dust adhering to the jig's reference surface can cause a "false fit" phenomenon when the workpiece is clamped, that is, the workpiece appears to be clamped in place, but there is actually a micron-level gap between the workpiece and the reference surface. After grinding, the workpiece dimensions are out of tolerance, and even shape distortion may occur.

[0004] To address the aforementioned issues, innovative design based on existing methods is urgently needed. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision flexible intelligent zero-point fixture for graphite to solve the problems mentioned in the background. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-precision flexible intelligent zero-point clamp for graphite, comprising a base and a grinding table. A mounting platform is installed on the top of the base, and a top platform is vertically limited and slidable inside the base. A limiting bead is provided inside the base. A placement platform is inserted at the top of the mounting platform. An adjusting plate is installed inside the placement platform. A rotating plate is rotatably connected to the top of the adjusting plate inside the placement platform. A sliding table is limited and slidable within a groove inside the adjusting plate. A bracket is installed on the top of the sliding table. Adjusting frames are installed on both sides of the top of the bracket. A flexible clamping mechanism is provided on the top of the adjusting frames. A cleaning mechanism is provided inside the bracket. The flexible clamping mechanism includes a bevel gear rotatably connected inside the adjusting plate. A gear ring meshing with the bevel gear is installed on the outer surface of the rotating plate. A sliding plate is limited and slidable within a notch at the top of the bracket. A clamping frame is limited and slidable inside the adjusting frames. Several clamping blocks are installed inside the clamping frames. A connecting rod is rotatably connected to the top of the sliding plate, and the other end of the connecting rod is rotatably connected to the clamping frame. An abutment rod is installed at the bottom of the sliding plate.

[0007] Preferably, the inner wall and outer surface of the top platform are in close contact with the internal cavity of the bottom platform, and the top platform slides vertically within the internal cavity of the bottom platform.

[0008] Preferably, a spring is installed at the bottom of the top platform, and the inner wall of the upper end of the top platform abuts against a limiting bead. The limiting bead is a plurality of beads, which are distributed equidistantly in a circular pattern inside the bottom platform. The bottom end of the placement platform is inserted into the installation platform.

[0009] Preferably, the top of the adjusting plate has a groove, the surface of the rotating plate has an inclined notch, the slide slides within the notch inside the rotating plate and within the groove on the top of the adjusting plate.

[0010] Preferably, a spring is installed at one end of the skateboard near the placement platform, and the other end of the spring is connected to the bracket. The bottom abutment rod of the skateboard abuts against the placement platform.

[0011] Preferably, five sets of clamping blocks are installed inside the clamping frame, and all five sets of clamping blocks are connected to the inner wall of the clamping frame via telescopic rods.

[0012] Preferably, the cleaning mechanism includes a rocker arm rotatably connected to the top of the inside of the bracket, with an air chamber installed at the end of the rocker arm near the adjustment frame, and a micro motor installed at the top of the inside of the bracket. The output end of the micro motor is rotatably connected to a circular plate via a vertical rod. A pressure sensor is installed at the end of the slide plate away from the placement platform. An abutment block is installed in the side wall of the notch at the top of the bracket. An abutment platform slides on the surface of the vertical rod at the top of the circular plate. A slide rod slides in the notch inside the circular plate.

[0013] Preferably, a miniature telescopic rod is installed inside the contact platform, the extended end of the miniature telescopic rod passes through the contact platform and is equipped with a contact ring, the bottom of the contact ring is connected to a circular plate; a miniature air pump is installed inside the ventilation chamber, and air outlets are opened on both sides and the bottom of the ventilation chamber, the bottom air outlet of the ventilation chamber is designed to be inclined.

[0014] Preferably, the lower surface of the contact block is inclined, and the sensing end of the pressure sensor abuts against the inclined surface of the lower end of the contact block. The lower surface of the contact platform is also inclined. The top of the slide rod abuts against the inclined surface of the contact platform. A spring is installed on the side of the slide rod near the micro motor, and the other end of the spring is connected to the internal notch of the circular plate. A round rod is installed at the bottom of the slide rod. A notch is opened inside the rocker arm, and the round rod at the bottom of the slide rod slides within the internal notch of the rocker arm.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention, through the setting of a rotating plate, a sliding table, a bracket, and a flexible clamping mechanism, can flexibly clamp graphite parts of different specifications. As the specifications of the graphite parts gradually decrease, the flexible clamping area can be adjusted synchronously. When the specifications of the graphite parts gradually decrease, the sliding table drives the clamping mechanism to shrink synchronously, so that the clamping area always fits the effective force-bearing surface of the graphite parts, avoiding local stress concentration caused by excessively large clamping areas or unstable clamping caused by excessively small clamping areas. Moreover, the clamping force can be evenly distributed in the safe force-bearing area of ​​the graphite parts, and the clamping force can be steplessly adjusted according to the specifications of the workpiece. This completely solves the stress concentration problem caused by rigid clamping or fixed area clamping, and reduces the chipping and corner breaking rate of graphite parts. At the same time, the flexible contact design can avoid scratching the surface of the graphite parts by the clamping surface, ensuring the appearance and structural integrity of the workpiece. It is especially suitable for the processing and grinding of high-precision products such as thin-walled, small-sized, and irregularly shaped graphite electrodes.

[0016] 2. This invention, through its cleaning mechanism, can clean the residue generated during the grinding and clamping of graphite parts. Furthermore, based on the specifications of the graphite parts, the swing range of the ventilation chamber can be adjusted synchronously to precisely clean the location of the graphite parts. For large-sized graphite parts, the swing angle of the ventilation chamber is increased to cover the entire clamping and grinding area; for small-sized or irregularly shaped graphite parts, the swing angle of the ventilation chamber is synchronously reduced to precisely focus on the contact area between the workpiece and the fixture, avoiding airflow waste. Simultaneously, the airflow ejected from the ventilation chamber has directional blowing capability, which can directly act on the dust accumulation on the placement table surface and the key areas where the graphite parts are clamped. Directional blowing of the airflow can quickly remove dust from the fixture surface and gaps, preventing the formation of a stubborn dust accumulation layer on the positioning and clamping surfaces, thus cutting off the path of dust pollution at its source. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the main structure of the present invention; Figure 2 is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 is a schematic diagram of the main structure of the placement platform of the present invention; Figure 4 is an exploded structural diagram of the placement platform and the adjusting plate of the present invention; Figure 5 is an exploded structural diagram of the adjusting plate and the rotating plate of the present invention; Figure 6 is a schematic diagram of the structure of the bracket of the present invention; Figure 7 is a schematic diagram of the structure of the flexible clamping mechanism of the present invention; Figure 8 is an exploded structural diagram of the clamping frame and the clamping block of the present invention; Figure 9 is a schematic diagram of the structure of the cleaning mechanism of the present invention; Figure 10 is an exploded structural diagram of the cleaning mechanism of the present invention; Figure 11 is a schematic diagram of the structure of the contact platform of the present invention.

[0018] In the diagram: 1. Base platform; 2. Mounting platform; 3. Top platform; 4. Limiting bead; 5. Placement platform; 6. Adjustment plate; 7. Rotating plate; 8. Slide table; 9. Bracket; 101. Bevel gear; 102. Gear ring; 103. Slide plate; 104. Clamping frame; 105. Clamping block; 106. Connecting rod; 107. Abutment rod; 11. Adjustment frame; 121. Rocking rod; 122. Ventilation chamber; 123. Micro motor; 124. Circular plate; 125. Pressure sensor; 126. Abutment block; 127. Abutment platform; 128. Slide rod; 129. Micro telescopic rod; 1210. Abutment ring. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] Example 1:

[0021] Please refer to Figures 1-11. This invention provides a technical solution: a high-precision flexible intelligent zero-point fixture for graphite, comprising a base 1 and a grinding table. A mounting table 2 is mounted on the top of the base 1. A top table 3 is vertically limited and slides within the base 1. The inner wall and outer surface of the top table 3 are tightly fitted to the internal cavity of the base 1. The top table 3 slides vertically within the internal cavity of the base 1. Limiting beads 4 are provided inside the base 1. A placement platform 5 is inserted into the top of the mounting table 2. A spring is installed at the bottom of the top table 3. The upper inner wall of the top table 3 abuts against the limiting beads 4. Several limiting beads 4 are equidistantly distributed in a circular pattern inside the base 1. The bottom end of the placement platform 5 is inserted into the mounting table 2. An adjusting plate 6 is installed inside the placement platform 5. A rotating mechanism is rotatably connected to the top of the adjusting plate 6 inside the placement platform 5. Plate 7 and adjusting plate 6 have grooves on their tops. The rotating plate 7 has an inclined notch on its surface. The slide table 8 slides within the notch inside the rotating plate 7 and within the groove on the top of the adjusting plate 6. The slide table 8 slides within the sliding groove inside the adjusting plate 6. A bracket 9 is installed on the top of the slide table 8. Adjusting frames 11 are installed on both sides of the top of the bracket 9. A flexible clamping mechanism is provided on the top of the adjusting frames 11. A cleaning mechanism is provided inside the bracket 9. The placement platform 5 is placed on top of the mounting platform 2, and the bottom of the placement platform 5 is inserted into the base platform 1. At this time, gas is injected into the cavity inside the base platform 1. The gas lifts the top platform 3, causing it to rise within the cavity inside the base platform 1. Pressure is applied to the limiting bead 4, causing it to move towards the center of the base platform 1 and lock the placement platform 5. The graphite part is then processed by a grinding machine.

[0022] In one embodiment of the present invention, the flexible clamping mechanism includes a bevel gear 101 rotatably connected inside the adjusting plate 6, a gear ring 102 meshing with the bevel gear 101 mounted on the outer surface of the rotating plate 7, a sliding plate 103 slidably limited within the top notch of the support 9, a spring mounted on one end of the sliding plate 103 near the placement platform 5, the other end of the spring being connected to the support 9, a bottom abutment rod 107 of the sliding plate 103 abutting against the placement platform 5, five sets of clamping blocks 105 mounted inside the clamping frame 104, all five sets of clamping blocks 105 being connected to the inner wall of the clamping frame 104 via telescopic rods, and a clamping frame 104 slidably limited inside the adjusting frame 11, with several clamping blocks 105 mounted inside the clamping frame 104. 5. A connecting rod 106 is rotatably connected to the top of the slide plate 103, and the other end of the connecting rod 106 is rotatably connected to the clamping frame 104. An abutment rod 107 is installed at the bottom of the slide plate 103. When clamping the graphite part, the bevel gear 101 is rotated. The rotation of the bevel gear 101 drives the gear ring 102 to rotate synchronously. When the gear ring 102 rotates, it drives the rotating plate 7 to rotate inside the placement platform 5. When the rotating plate 7 rotates, the slide table 8 slides in the arc-shaped inclined groove inside the rotating plate 7, thereby causing the slide table 8 to slide towards the center in the top groove of the adjusting plate 6. While the slide table 8 is sliding, it drives the bracket 9 to move towards the central area of ​​the placement platform 5 synchronously, until the clamping block 105 inside the clamping frame 104 clamps and abuts against the graphite part. The design of multiple clamping blocks 105 inside the clamping frame 104, with the clamping blocks 105 having an elastic telescopic design within the clamping frame 104, can provide a flexible clamping effect for the graphite part, avoiding the local pressure of the grippers causing the bonding force between graphite grains to break and affecting the graphite part. Simultaneously with the movement of the support 9, the placement platform 5 abuts against the abutting rod 107 at the bottom of the sliding plate 103, causing it to move away from the placement platform 5 within the notch at the top of the support 9. At the same time as the sliding plate 103 moves, the connecting rod 106 pulls the clamping frame 104 to slide within the adjusting frame 11, causing the clamping frame 104 to slide closer to the support 9 within the adjusting frame 11, thus synchronously adjusting the position of the clamping frame 104. The system can flexibly clamp graphite parts of different specifications. As the size of the graphite parts gradually decreases, the flexible clamping area can be adjusted synchronously. When the size of the graphite parts gradually decreases, the slide 8 drives the clamping mechanism to shrink synchronously, so that the clamping area always fits the effective force-bearing surface of the graphite parts. This avoids local stress concentration caused by the clamping area being too large, or clamping instability caused by the clamping area being too small. Moreover, the clamping force can be evenly distributed in the safe force-bearing area of ​​the graphite parts. At the same time, the flexible contact design can avoid scratching the surface of the graphite parts by the clamping surface, ensuring the appearance and structural integrity of the workpiece. It is especially suitable for the processing and grinding of high-precision products such as thin-walled, small-sized, and irregularly shaped graphite electrodes.

[0023] In one embodiment of the present invention, the cleaning mechanism includes a rocker arm 121 rotatably connected to the top of the inside of the bracket 9. A ventilation chamber 122 is installed at the end of the rocker arm 121 near the adjustment frame 11. It also includes a micro motor 123 installed at the top of the inside of the bracket 9. The output end of the micro motor 123 is rotatably connected to a circular plate 124 via a vertical rod. A pressure sensor 125 is installed at the end of the slide plate 103 away from the placement platform 5. An abutment block 126 is installed inside the side wall of the notch at the top of the bracket 9. An abutment platform 127 slides on the surface of the vertical rod at the top of the circular plate 124. A sliding rod 128 slides inside the notch of the circular plate 124. A micro telescopic rod 129 is installed inside the abutment platform 127, with its extended end penetrating through the abutment platform 127. It is equipped with a contact ring 1210, the bottom of which is connected to the circular plate 124; a micro air pump is installed inside the ventilation chamber 122, and air outlets are opened on both sides and the bottom of the ventilation chamber 122. The air outlet at the bottom of the ventilation chamber 122 is designed to be inclined. The lower surface of the contact block 126 is inclined, and the sensing end of the pressure sensor 125 abuts against the inclined surface of the lower end of the contact block 126. The lower surface of the contact platform 127 is designed to be inclined. The top of the slide rod 128 abuts against the inclined surface of the contact platform 127. A spring is installed on the side of the slide rod 128 near the micro motor 123. The other end of the spring is connected to the internal notch of the circular plate 124. A round rod is installed at the bottom of the slide rod 128. A notch is opened inside the rocker arm 121. 8. The bottom round rod slides within the notch inside the rocker arm 121; after the graphite part is polished, the micro air pump inside the ventilation chamber 122 operates, and then drives the round plate 124 to rotate through the extended end of the micro motor 123. The round plate 124 drives the slide rod 128 to rotate together. At this time, the bottom round plate 124 of the slide rod 128 slides within the notch inside the rocker arm 121, thereby driving the ventilation chamber 122 to swing back and forth through the rocker arm 121. At this time, the gas inside the ventilation chamber 122 is discharged through the air outlets at the side and bottom, cleaning the surface of the placement table 5 and the surface of the clamping block 105. When clamping small-sized graphite parts, because the slide plate 103 moves away from the placement table 5 in the notch at the top of the bracket 9, the pressure sensor 1 When the sensing point 25 is subjected to the resistance and stretching of the inclined surface of the contact block 126, the micro telescopic rod 129 is extended by the external controller, causing the contact platform 127 to slide on the vertical surface of the top of the circular plate 124. At this time, the inclined surface of the contact platform 127 reduces the resistance force on the slide rod 128. The spring at the side end of the slide rod 128 rebounds, pulling it towards the central area, and the swing range of the rocker arm 121 is adjusted synchronously, so that it can accurately clean the location of the graphite part. For large-sized graphite parts, the swing angle of the ventilation chamber 122 is increased to cover the entire clamping and grinding area; for small-sized or irregularly shaped graphite parts, the swing angle of the ventilation chamber 122 is reduced synchronously to accurately focus on the contact area between the workpiece and the fixture, avoiding airflow waste.Meanwhile, the airflow ejected from the ventilation chamber 122 has directional purging capability, which can directly act on the dust accumulation on the surface of the placement platform 5 and the key areas where the graphite parts are clamped. The directional purging of the airflow can quickly carry away the dust from the surface and gaps of the clamps, preventing the formation of a stubborn dust accumulation layer on the positioning and clamping surfaces, thus cutting off the path of dust pollution at the source.

[0024] Example 2:

[0025] Please refer to Figures 1-11. The system includes a base platform 1 and a polishing table. A mounting platform 2 is installed on top of the base platform 1. A top platform 3 slides vertically within the base platform 1, and a limit bead 4 is installed inside the base platform 1. A placement platform 5 is inserted at the top of the mounting platform 2. An adjusting plate 6 is installed inside the placement platform 5. A rotating plate 7 is rotatably connected to the top of the adjusting plate 6 inside the placement platform 5. A sliding table 8 slides within a groove inside the adjusting plate 6, and a bracket 9 is installed on top of the sliding table 8. Adjusting frames 11 are installed on both sides of the top of the bracket 9. A flexible clamping mechanism is installed on the top of the adjusting frames 11. A cleaning mechanism is installed inside the bracket 9. The inner wall and outer surface of the top platform 3 are tightly fitted to the internal cavity of the base platform 1. The top platform 3 slides vertically within the internal cavity of the base platform 1. A spring is installed at the bottom of the top platform 3. The upper inner wall of platform 3 abuts against limiting beads 4. Several limiting beads 4 are equidistantly distributed in a circular pattern inside the base platform 1. The bottom end of platform 5 is inserted into the mounting platform 2. A groove is provided on the top of adjusting plate 6, and an inclined notch is provided on the surface of rotating plate 7. Slide 8 slides within the notch inside rotating plate 7 and within the groove on the top of adjusting plate 6. The base platform 1 of the zero-point fixture is fixed to the machining center's worktable using bolts or the zero-point positioning interface provided with the machining center's worktable, aligning the central axis of the base platform 1 with the zero-point coordinate reference of the machining center's worktable. This completes the basic reference calibration of the fixture and the machining center. The base platform 1 serves as the basic positioning structure of the fixture, achieving reference unification between the fixture and the machining center. This aligns with the machining center's... The core requirement of ensuring a high degree of alignment between the workpiece machining datum and the CNC system coordinate datum is a fundamental prerequisite for the application of zero-point fixtures in machining centers. This ensures that the workpiece is always machined using a unified datum across multiple processes. A machining center is an automated precision machining equipment integrating milling, drilling, boring, and other processes. Its core is the CNC system, which drives the machining tool to perform rotary cutting motion via the spindle. The worktable moves the workpiece precisely in multiple dimensions, including the X, Y, and Z axes. Complex parts are machined through the relative motion between the tool and the workpiece. Its core machining requirements are unified datum, accurate positioning, stable clamping, and coordinated processes. The zero-point fixture, as the core of precision tooling, works in conjunction with the zero-point positioning system of the machining center's worktable. Next, a fixed zero-point positioning plate is used to realize the rapid clamping and high-precision repeatable positioning of the workpiece in multiple processes and stations of the machining center. This ensures that the workpiece machining datum is consistent with the coordinate datum of the CNC system of the machining center, greatly improving machining efficiency and accuracy. It is a key tooling component for the machining center to achieve automated and high-precision machining. After the machining center worktable drives the fixture to move in a dimension or completes the station switch, the vertical limiting sliding characteristic of the top platform 3 inside the bottom platform 1 is used. With the help of the spring structure at the bottom of the top platform 3, the top platform 3 is pressed down to move down in the cavity inside the bottom platform 1. The upper inner wall of the top platform 3 is released from the contact with the limiting beads 4. Several circumferentially distributed limiting beads 4 retract into the bottom platform 1, completing the fine adjustment and alignment of the fixture and the machining center worktable.After the top platform 3 is released, the bottom spring rebounds, pushing the top platform 3 upwards. The inner wall of the top platform 3 then re-engages with the limiting bead 4, causing it to push outwards from the bottom platform 1. The limiting bead 4 engages with the positioning slot of the machining center's worktable, achieving rapid locking and station fixation of the fixture on the machining center's worktable. This meets the machining center's requirements for rapid tooling clamping and stable locking, preventing the fixture from loosening during machining. The vertical limiting sliding and spring rebound structure of the top platform 3 inside the bottom platform 1, combined with the circumferentially distributed limiting beads 4, enables rapid locking and unlocking of the fixture on the machining center's worktable, suitable for multi-station, multi-process machining operations. The rapid tooling changeover requirement significantly shortens the tooling setup time of the machining center, improving processing efficiency. Meanwhile, the circumferentially equidistant distribution of the limit beads 4 ensures uniform force distribution on the clamped fixture after locking, resisting the radial cutting force during machining and guaranteeing clamping stability. The plug-in fit design between the placement table 5 and the mounting table 2 enables rapid overall replacement of the workpiece with the placement table 5 without requiring realignment of the fixture. This matches the multi-variety, small-batch production mode of the machining center. Furthermore, the precision of the plug-in fit ensures that the workpiece remains consistent with the machining center's reference standard after replacement, meeting the machining center's requirements for repeatability accuracy.

[0026] Working principle: In use, the placement platform 5 is first placed on top of the mounting platform 2, with its bottom extending into the base platform 1. Gas is then injected into the cavity inside the base platform 1, causing the top platform 3 to rise within the cavity and apply pressure to the limiting bead 4, causing it to move towards the center of the base platform 1 and lock the placement platform 5 in place. The graphite part is then processed using a grinding table. While clamping the graphite part, the bevel gear 101 is rotated, causing the gear ring 102 to rotate synchronously. When ring 102 rotates, it drives rotating plate 7 to rotate inside placement platform 5. As rotating plate 7 rotates, slide table 8 slides within the arc-shaped inclined groove inside rotating plate 7, causing slide table 8 to slide towards the center within the top groove of adjusting plate 6. Simultaneously, slide table 8 drives bracket 9 to move towards the central area of ​​placement platform 5 until the clamping blocks 105 inside clamping frame 104 clamp and resist the graphite part. Due to the design of multiple clamping blocks 105 inside clamping frame 104, and the elastic extension and retraction design of the clamping blocks 105 within clamping frame 104, the graphite part can be effectively clamped. The flexible clamping function prevents the local pressure of the grippers from breaking the bonding force between graphite grains and affecting the graphite parts. Simultaneously with the movement of the support 9, the placement platform 5 abuts against the abutment rod 107 at the bottom of the sliding plate 103, causing it to move away from the placement platform 5 within the notch at the top of the support 9. At the same time, the sliding plate 103 moves, and the connecting rod 106 pulls the clamping frame 104 to slide inside the adjusting frame 11, causing the clamping frame 104 to slide closer to the support 9 within the adjusting frame 11, thus synchronously adjusting the position of the clamping frame 104. When clamping smaller graphite parts, the bevel gear 101 continues to rotate, causing it to drive the rotating plate 7 to rotate through the gear ring 102. At this time, the slide table 8 continues to move towards the center in the top groove of the adjustment plate 6, driving the bracket 9 to continue to move towards the middle area of ​​the placement platform 5 until the clamping block 105 clamps the small graphite parts, and the placement platform 5 again abuts against the abutting rod 107 at the bottom of the slide plate 103, causing the clamping frame 104 to continue to slide in the adjustment frame 11 towards the bracket 9, and the position of the clamping frame 104 is adjusted synchronously.After the graphite parts are polished, the micro air pump inside the ventilation chamber 122 operates, which in turn drives the circular plate 124 to rotate via the extended end of the micro motor 123. The circular plate 124 drives the slide rod 128 to rotate together. At this time, the circular plate 124 at the bottom of the slide rod 128 slides within the notch of the rocker arm 121, thereby driving the ventilation chamber 122 to swing back and forth via the rocker arm 121. At this time, the gas inside the ventilation chamber 122 is discharged through the air outlets at the side and bottom, cleaning the surface of the placement platform 5 and the clamping block 105. When clamping small-sized graphite parts, the sliding plate 103 supports the... Within the notch at the top of frame 9, the device moves away from the placement platform 5. At this time, the pressure sensor 125 is subjected to resistance and stretching from the inclined surface of the contact block 126. This triggers the extension of the micro telescopic rod 129 via an external controller, causing the contact platform 127 to slide on the vertical surface at the top of the circular plate 124. This reduces the resistance force on the sliding rod 128 from the inclined surface of the contact platform 127. The spring at the side end of the sliding rod 128 then rebounds, pulling it towards the central area, synchronously adjusting the swing range of the rocker arm 121 to precisely clean the location of the graphite component.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-precision flexible intelligent zero-point fixture for graphite, comprising a base (1) and a grinding table, characterized in that: The base (1) is equipped with an installation platform (2) on top. The base (1) has a vertically slidable top platform (3) inside. The base (1) is equipped with a limit bead (4). The installation platform (2) has a placement platform (5) inserted at the top. The placement platform (5) has an adjustment plate (6) installed inside. The placement platform (5) is rotatably connected to the top of the adjustment plate (6). The adjustment plate (6) has a sliding table (8) in a sliding groove inside. The sliding table (8) has a bracket (9) installed on top. The bracket (9) has adjustment frames (11) installed on both sides of its top. The adjustment frames (11) have a flexible clamping mechanism on their top. The bracket (9) The internal cleaning mechanism is provided; the flexible clamping mechanism includes a bevel gear (101) rotatably connected inside the adjusting plate (6), a gear ring (102) meshing with the bevel gear (101) is installed on the outer surface of the rotating plate (7), a slide plate (103) is limited and slidably installed in the top notch of the bracket (9), a clamping frame (104) is limited and slidably installed inside the adjusting frame (11), a number of clamping blocks (105) are installed inside the clamping frame (104), a connecting rod (106) is rotatably connected to the top of the slide plate (103), the other end of the connecting rod (106) is rotatably connected to the clamping frame (104), and an abutment rod (107) is installed at the bottom of the slide plate (103).

2. The high-precision flexible intelligent zero-point fixture for graphite according to claim 1, characterized in that: The inner wall and outer surface of the top platform (3) are closely attached to the internal cavity of the bottom platform (1), and the top platform (3) slides vertically within the internal cavity of the bottom platform (1).

3. A high-precision flexible intelligent zero-point fixture for graphite according to claim 2, characterized in that: A spring is installed at the bottom of the top platform (3), and the inner wall of the upper end of the top platform (3) abuts against the limiting bead (4). There are several limiting beads (4), and the limiting beads (4) are distributed in a circular shape at equal intervals inside the bottom platform (1). The bottom end of the placement platform (5) is inserted into the installation platform (2).

4. A high-precision flexible intelligent zero-point fixture for graphite according to claim 3, characterized in that: The top of the adjusting plate (6) is provided with a groove, the surface of the rotating plate (7) is provided with an inclined notch, the slide (8) is limited to sliding within the notch inside the rotating plate (7), and is limited to sliding within the groove on the top of the adjusting plate (6).

5. A high-precision flexible intelligent zero-point fixture for graphite according to claim 4, characterized in that: The slide plate (103) is equipped with a spring at one end near the placement platform (5), and the other end of the spring is connected to the bracket (9). The bottom abutment rod (107) of the slide plate (103) abuts against the placement platform (5).

6. A high-precision flexible intelligent zero-point fixture for graphite according to claim 5, characterized in that: The clamping frame (104) is equipped with five sets of clamping blocks (105), and all five sets of clamping blocks (105) are connected to the inner wall of the clamping frame (104) through telescopic rods.

7. A high-precision flexible intelligent zero-point fixture for graphite according to claim 6, characterized in that: The cleaning mechanism includes a rocker arm (121) rotatably connected to the top of the inside of the bracket (9). A ventilation chamber (122) is installed at the end of the rocker arm (121) near the adjustment frame (11). It also includes a micro motor (123) installed at the top of the inside of the bracket (9). The output end of the micro motor (123) is rotatably connected to a circular plate (124) via a vertical rod. A pressure sensor (125) is installed at the end of the slide plate (103) away from the placement platform (5). An abutment block (126) is installed in the side wall of the notch at the top of the bracket (9). An abutment platform (127) slides on the surface of the vertical rod at the top of the circular plate (124). A slide rod (128) slides in the notch inside the circular plate (124).

8. A high-precision flexible intelligent zero-point fixture for graphite according to claim 7, characterized in that: The contact platform (127) is equipped with a miniature telescopic rod (129). The extended end of the miniature telescopic rod (129) passes through the contact platform (127) and is equipped with a contact ring (1210). The bottom of the contact ring (1210) is connected to the circular plate (124). The ventilation chamber (122) is equipped with a miniature air pump. Air outlets are provided on both sides and at the bottom of the ventilation chamber (122). The air outlet at the bottom of the ventilation chamber (122) is designed to be inclined.

9. A high-precision flexible intelligent zero-point fixture for graphite according to claim 8, characterized in that: The lower surface of the contact block (126) is inclined, and the sensing end of the pressure sensor (125) abuts against the inclined surface of the lower end of the contact block (126). The lower surface of the contact platform (127) is inclined. The top of the slide rod (128) abuts against the inclined surface of the contact platform (127). A spring is installed on the side of the slide rod (128) near the micro motor (123). The other end of the spring is connected to the internal notch of the circular plate (124). A round rod is installed at the bottom of the slide rod (128). A notch is opened inside the rocker arm (121). The round rod at the bottom of the slide rod (128) slides within the internal notch of the rocker arm (121).

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