A high-rigidity precision mold closing guide pin grinding tool

Abstract

This invention discloses a grinding tool for a high-rigidity precision mold guide post, relating to the field of guide post grinding technology. It includes a grinding assembly for grinding the guide post and checking its dimensional accuracy. The grinding assembly comprises a grinding component, a support switching component, and an inspection component. The grinding component grinds the guide post, the support switching component clamps and switches the positions of the two guide posts, and the inspection component checks the grinding status of the guide post. The grinding component includes a fixed stage and a moving stage. The support switching component is mounted on the moving stage, and the inspection component is mounted on the fixed stage. Through the operation of the grinding assembly, two guide posts can operate in parallel with station switching, allowing grinding and inspection of the guide posts to be performed simultaneously. A single guide post can quickly switch between grinding and inspection positions, ensuring that one guide post is always being ground while another is being inspected. This utilizes the idle time of existing grinding processes, improving the production efficiency of guide post grinding.

Description

Technical Field

[0001] This invention relates to the field of guide post grinding technology, specifically to a grinding tool for a high-rigidity precision mold clamping guide post. Background Technology

[0002] In existing technology, the process of grinding mold clamping guide pillars using an external cylindrical grinder is as follows: The operator first places a single guide pillar on the machine tool's clamping device, which clamps it securely using the conical structures at both ends. After starting the machine, the grinding wheel rotates at high speed to grind the outer diameter of the guide pillar. After processing, the clamping device must be released, the guide pillar removed from the grinding station, and then the dimensional accuracy is checked using a special measuring tool to determine if it meets the technical requirements. If the dimensions are not up to standard, the guide pillar must be reinstalled in the clamping device, the grinding parameters adjusted, and the grinding repeated. After processing, it is removed and checked again, and this cycle is repeated until the guide pillar's accuracy is qualified. Throughout the process, grinding and dimensional inspection cannot be performed simultaneously, and the repeated clamping and inspection significantly consume the operator's working time, resulting in the grinding wheel being idle for a long time, leading to low grinding efficiency of the mold clamping guide pillars.

[0003] Meanwhile, the existing clamping method has obvious defects: relying solely on the conical structures at both ends constitutes two-point positioning, which can only limit the axial displacement of the guide post and cannot effectively constrain lateral interference forces during the machining process; moreover, the conical structure contacts the inner hole edges at both ends of the guide post through its own steps, resulting in a very small contact area. When the guide post is subjected to cutting forces during grinding, it is very easy for it to oscillate or deviate slightly around the conical support points at both ends, which seriously interferes with the stability of the guide post grinding process.

[0004] To address this, a high-rigidity precision mold guide post is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a high-rigidity precision mold guide post for solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grinding tool for a high-rigidity precision mold guide post, comprising a grinding assembly, which is used to grind the guide post and check the dimensional accuracy of the grinding. The grinding assembly includes a grinding component, a support switching component, and an inspection component. The grinding component is used to grind the guide post, the support switching component is used to clamp and switch the positions of the two guide posts, and the inspection component is used to check the grinding condition of the guide post. The grinding component includes a fixed platform and a moving platform. The support switching component is disposed on the moving platform, and the inspection component is disposed on the fixed platform. The support switching component includes two support shafts for supporting the ends of the guide post and eight abutments for supporting the inner surface of the guide post. The inspection component includes two laser rangefinders for checking the diameter of the guide post and a servo motor for driving the guide post to rotate for inspection.

[0007] Furthermore, the grinding components also include a grinding table and a grinding wheel. The grinding wheel is installed on the top surface of the grinding table, a sliding plate is installed on the grinding table, a fixed table is fixedly connected to the top of the sliding plate, the sliding table is installed on the top of the sliding plate, a grinding spindle is installed on the side of the fixed table near the sliding table, and a control panel is fixedly connected to the grinding table.

[0008] Furthermore, the support switching component also includes a servo motor, which is fixedly connected to the side of the moving platform near the fixed platform. The servo motor has a fixed end and an output shaft. The output shaft of the servo motor faces the fixed platform. A support plate is fixedly connected to the output shaft of the servo motor. Two fixed blocks are symmetrically fixedly connected to the side of the support plate near the fixed platform. Two support shafts are rotatably connected to the two fixed blocks respectively. An inner tube is fixedly connected to the end of each of the two support shafts away from the support plate. An electric push rod is installed inside the two inner tubes. The electric push rod has a fixed shaft and a telescopic shaft. The fixed shaft of the electric push rod is fixedly connected to the support shaft. The telescopic shaft of the electric push rod faces the side away from the support shaft. A cone block is fixedly connected to the telescopic shaft end of each of the two electric push rods. Four guide rods are slidably connected in a circular array inside each of the two inner tubes. Both ends of each guide rod pass through the inner tube. Eight abutments are fixedly connected to the ends of the eight guide rods that extend outside the inner tubes respectively. A push plate is fixedly connected to the end of each guide rod inside the inner tube. A loop rope is installed inside each inner tube.

[0009] Furthermore, servo motor 2 is fixedly connected to the side of the fixed platform near the moving platform. Servo motor 2 includes a fixed end and an output shaft. The output shaft end of servo motor 2 faces the side near the moving platform. The inspection component also includes two fixed plates symmetrically arranged on both sides of servo motor 2. Both fixed plates are fixedly connected to the side of the fixed platform near servo motor 2. An electric push rod 2 is fixedly connected to the side of the two fixed plates that are close to each other. The electric push rod 2 is divided into a fixed shaft and a telescopic shaft. The telescopic shaft end of the electric push rod 2 faces servo motor 2. A support plate is fixedly connected to the telescopic shaft end of the two electric push rods 2. A servo motor 3 is fixedly connected to each of the two support plates. A threaded screw is rotatably connected to each of the two support plates. A guide post is fixedly connected to each of the two support plates. The servo motor 3 is divided into a fixed end and an output shaft. The output shaft of servo motor 3 and the end of the threaded screw that protrudes from the support plate are fixedly connected. A moving block is slidably connected to each of the two guide posts. Two laser rangefinders are fixedly connected to the side of the two moving blocks that are close to each other.

[0010] Furthermore, the grinding shaft, the output shaft of the second servo motor, and the two support shafts are all configured as conical structures with multiple stepped grooves.

[0011] Furthermore, the four push plates inside the same inner tube are engaged with the cone block through a pressing mechanism.

[0012] Furthermore, the outer surface of the abutment is provided with a rubber anti-slip pad.

[0013] Furthermore, the loop ropes inside the same inner tube pass through the corresponding four push plates, and the loop ropes are made of elastic rubber.

[0014] Furthermore, the support plate is L-shaped, and the moving block is threadedly connected to the adjacent threaded screw.

[0015] Furthermore, the control panel electrically controls the grinding shaft, servo motor one, electric push rod one, servo motor two, two electric push rods two, and two servo motors three. At the same time, there is an electrical connection between the two laser rangefinders and the control panel.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In the existing technology, grinding and dimensional inspection must be carried out in separate steps. A single guide post needs to go through repeated cycles of clamping, grinding, disassembly, inspection, reassembly, and re-grinding. Moreover, only one guide post can be processed at a time. Non-machining steps such as clamping and inspection cause the machine tool to be idle for a long time.

[0018] By designing two guide pillars to operate in parallel and switch between workstations through the operation of the grinding components, the grinding and inspection of the guide pillars can be carried out simultaneously. A single guide pillar can quickly switch between the grinding position and the inspection position, ensuring that there is always one guide pillar grinding and one inspecting. This utilizes the idle time of the existing grinding process and improves the production efficiency of guide pillar grinding.

[0019] In the existing technology, relying solely on two-point positioning with conical structures at both ends can only limit axial displacement, but cannot constrain lateral interference forces. Furthermore, the contact area is small, and the guide post is prone to swinging and shifting around the conical fulcrum when subjected to cutting forces, which seriously affects the grinding stability.

[0020] By operating the grinding assembly, a three-point clamping and limiting structure with tapered ends and an inner support structure in the middle was designed to form a stable three-point constraint, which effectively constrains the lateral swing and twisting of the guide post under the action of cutting force, providing a stable foundation for the grinding of the guide post.

[0021] In the existing technology, since the guide post needs to be removed from the fixture for inspection each time the size is checked, and the guide post needs to be re-clamped when the size inspection fails, the contact position and clamping force of the conical structure are difficult to be completely consistent each time, which leads to fluctuations in the positioning reference and thus produces accuracy deviations, resulting in poor consistency during mass production.

[0022] Through the operation of the grinding assembly, the guide post is limited and fixed by the internal support structure when switching between the grinding position and the detection position, so it does not need to be disassembled and always maintains the same clamping state, avoiding positioning deviation caused by repeated clamping; at the same time, the positioning reference of the three-point clamping is more stable, further reducing the impact of clamping error on accuracy. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall device of the present invention;

[0024] Figure 2 This is a schematic diagram showing the positions of the guide post, grinding wheel, and shifting plate of the present invention;

[0025] Figure 3 This is a partial cross-sectional schematic diagram of the grinding shaft, inner tube, electric push rod, and other structures of the present invention.

[0026] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0028] Figure 6 This is a schematic diagram showing the positions of the guide post, electric push rod 1, support shaft, and other structures of the present invention.

[0029] Figure 7 This is a schematic diagram showing the separation of the guide post, inner tube, and other structures of the present invention;

[0030] Figure 8 This is a schematic diagram showing the positions of the threaded lead screw, guide post, and other structures of the present invention;

[0031] Figure 9 This is an exploded view of the guide rod, butt plate, and ring rope of the present invention;

[0032] Figure 10 This is an exploded view of the servo motor, carrier plate, fixing block, and other structures of the present invention.

[0033] In the picture:

[0034] 11. Guide post;

[0035] Grinding components: 21. Grinding table; 22. Grinding wheel; 23. Moving plate; 24. Fixed table; 25. Moving table; 26. Grinding spindle; 27. Control panel;

[0036] Support switching components: 31. Servo motor 1; 32. Bearing plate; 33. Fixing block; 34. Support shaft; 35. Inner tube; 36. Electric push rod 1; 37. Conical block; 38. Guide rod; 39. Support plate; 310. Push plate; 311. Ring rope;

[0037] Components to be inspected: 312, Servo motor II; 313, Fixing plate; 314, Electric push rod II; 315, Support plate; 316, Servo motor III; 317, Threaded screw; 318, Guide column; 319, Moving block; 320, Laser rangefinder. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0039] The embodiments provided by this invention:

[0040] Please see Figures 1 to 10 As shown, a grinding tool for a high-rigidity precision mold guide post includes a grinding assembly. The grinding assembly is used to grind the guide post 11 and check the dimensional accuracy of the grinding. The grinding assembly includes a grinding component, a support switching component, and an inspection component.

[0041] The grinding components include a grinding table 21, a grinding wheel 22 mounted on the top surface of the grinding table 21, a moving plate 23 mounted on the grinding table 21, a fixed platform 24 fixedly connected to the top of the moving plate 23, a moving stage 25 mounted on the top of the moving plate 23, a grinding shaft 26 mounted on the side of the fixed platform 24 near the moving stage 25, and a control panel 27 fixedly connected to the grinding table 21.

[0042] The support switching component is mounted on the moving plate 23. The support switching component includes a servo motor 31, which is fixedly connected to the side of the moving platform 25 near the fixed platform 24. The servo motor 31 has a fixed end and an output shaft. The output shaft of the servo motor 31 faces the fixed platform 24. A support plate 32 is fixedly connected to the output shaft of the servo motor 31. Two fixing blocks 33 are symmetrically fixedly connected to the side of the support plate 32 near the fixed platform 24. Each of the two fixing blocks 33 has a rotatable support shaft 34. An inner tube 35 is fixedly connected to the end of each support shaft 34 away from the support plate 32. An electric push rod 3 is installed inside each of the two inner tubes 35. 6. The electric push rod 36 is divided into a fixed shaft and a telescopic shaft. The fixed shaft of the electric push rod 36 is fixedly connected to the support rotating shaft 34. The telescopic shaft end of the electric push rod 36 faces away from the support rotating shaft 34. A cone block 37 is fixedly connected to the telescopic shaft end of each of the two electric push rods 36. Four guide rods 38 are slidably connected in a ring array inside each of the two inner tubes 35. Both ends of each guide rod 38 pass through the inner tube 35. A stop plate 39 is fixedly connected to the end of each guide rod 38 that extends out of the inner tube 35. A push plate 310 is fixedly connected to the end of each guide rod 38 that is inside the inner tube 35. A ring rope 311 is provided inside each inner tube 35.

[0043] The inspection component is mounted on the fixed platform 24. The inspection component includes a second servo motor 312, which is fixedly connected to the side of the fixed platform 24 near the moving platform 25. The second servo motor 312 includes a fixed end and an output shaft, with the output shaft facing towards the side near the moving platform 25. Two fixed plates 313 are symmetrically arranged on both sides of the second servo motor 312, and both fixed plates 313 are fixedly connected to the side of the fixed platform 24 near the second servo motor 312. An electric push rod 314 is fixedly connected to the side of each of the two fixed plates 313 that is close to each other. The electric push rod 314 consists of a fixed shaft and a telescopic shaft, with the telescopic shaft facing towards... A support plate 315 is fixedly connected to the telescopic shaft ends of the servo motor 312 and the two electric push rods 314. A servo motor 316 is fixedly connected to each of the two support plates 315. A threaded screw 317 is rotatably connected to each of the two support plates 315. A guide post 318 is fixedly connected to each of the two support plates 315. The servo motor 316 is divided into a fixed end and an output shaft. The output shaft of the servo motor 316 and the threaded screw 317 are fixedly connected to one end of the support plate 315. A moving block 319 is slidably connected to each of the two guide posts 318. A laser rangefinder 320 is fixedly connected to the side of the two moving blocks 319 that are close to each other.

[0044] Wherein: the moving plate 23 is installed on the grinding worktable 21 by a linear module in the prior art, that is, the moving plate 23 can move horizontally on the grinding worktable 21.

[0045] Wherein: the moving stage 25 is installed on the moving plate 23 by a linear module in the prior art, that is, the moving stage 25 can move horizontally on the moving plate 23.

[0046] The grinding shaft 26 is a known prior art technique. A rotary motor is installed inside the fixed platform 24, and the grinding shaft 26 serves as an extension shaft externally connected to the output shaft of the rotary motor. The grinding shaft 26 is located on the fixed platform 24 near the grinding wheel 22 and is used to drive the guide post 11 to rotate. The grinding shaft 26, the output shaft of the servo motor 312, and one end of the two supporting shafts 34 are all configured as a conical structure with multiple stepped grooves. This structure is a known prior art technique and serves to contact the inner hole edges at both ends of the guide post 11. Through the stepped grooves at different positions, it can accommodate guide posts 11 of different sizes.

[0047] Specifically, four push plates 310 within a single inner tube 35 are press-fitted with a cone block 37, and the side of the four push plates 310 that contacts the cone block 37 is set as an inclined surface. A rubber anti-slip pad is provided on the outer surface of the abutment plate 39. A loop rope 311 within the same inner tube 35 passes through the corresponding four push plates 310. The loop rope 311 is made of elastic rubber. Specifically, when the loop rope 311 does not undergo elastic deformation, the four push plates 310 abut against each other.

[0048] Among them, the support plate 315 is set in L shape, and the moving block 319 is threadedly connected to the adjacent threaded screw 317.

[0049] Among them, the control panel 27 serves as the central control unit, and the control panel 27 electrically controls the grinding shaft 26, servo motor 1 31, electric push rod 1 36, servo motor 2 312, two electric push rods 2 314, and two servo motors 316.

[0050] The laser rangefinder 320 is a known technology and will not be described further here. There is an electrical connection between the two laser rangefinders 320 and the control panel 27. The data measured by the two laser rangefinders 320 can be displayed on the control panel 27. That is, when the guide post 11 is located between the two laser rangefinders 320, the user can observe the outer surface dimensions of the guide post 11 after polishing by the two laser rangefinders 320 through the control panel 27.

[0051] It should be noted that the two electric push rods 314 are designed to adjust the distance between the two laser rangefinders 320, ensuring that the distance between the two laser rangefinders 320 can accommodate guide posts 11 of different thicknesses, and that the laser rangefinders 320 do not obstruct the rotation and position switching of the two guide posts 11.

[0052] In the initial stage of the grinding assembly, i.e., before the grinding operation of the guide post 11 is performed, the state of each structure within the grinding assembly is as follows: The shift stage 25 is located at the end of the shift plate 23 away from the fixed stage 24, meaning the distance between the fixed stage 24 and the shift stage 25 is at its maximum. The guide post 11 is not inserted into the grinding shaft 26. The output shaft of the servo motor 31 is not rotating. The support plate 32 is in a horizontal state. The two support shafts 34 correspond to the positions of the grinding shaft 26 and the output shaft of the servo motor 312, respectively. The telescopic shaft of the electric push rod 36 is not extended. The cone block 37 is not in contact with the push plate 310. The ring rope 311 does not undergo elastic deformation. The inner surface of the abutment plate 39 is in contact with the outer surface of the inner tube 35. The four push plates 310 within the same inner tube 35 are brought together and in contact with each other under the action of the ring rope 311, and under the limiting action of the ring rope 311 and the guide rod 38, the ring formed by the four push plates 310 is at the same axial position as the inner tube 35. Neither of the telescopic shafts of the two electric actuators 314 are extended, meaning the distance between the two laser rangefinders 320 is at its maximum at this time. The laser rangefinder 320 is located on the corresponding guide post 318 at the end closest to the servo motor 312.

[0053] When the grinding assembly is running, it can simultaneously grind two guide posts 11 of the same size and check the grinding dimensions. The user prepares two guide posts 11 of the same size and inserts them into two support shafts 34. At this time, the inner hole edge of the two guide posts 11 near the moving stage 25 abuts against the adjacent support shaft 34. Through the conical structure design of the multiple stepped grooves of the support shaft 34, one of the grooves of the support shaft 34 can be tightly inserted with the guide post 11. At this time, the inner tube 35, the abutment plate 39 and other structures correspondingly provided on the two support shafts 34 are all located inside the adjacent guide posts 11.

[0054] After completion, the user drives the telescopic shafts of the two electric push rods 36 to extend simultaneously via the control panel 27. As the telescopic shafts of the electric push rods 36 extend, they drive the cone block 37 to move away from the fixed platform 24. During this process, the cone block 37 gradually contacts the four push plates 310 inside the corresponding inner tube 35. As the cone block 37 continues to move, guided by the conical inclined surface of the cone block 37, the four push plates 310 gradually separate, that is, the four push plates 310 expand outward at equal intervals. As the four push plates 310 expand outward at equal intervals, the ring rope 311 is gradually stretched elastically. The push plates 310 drive the corresponding guide rod 38 to slide outward on the inner tube 35. As the guide rod 38 extends outward, it drives the abutment plate 39 to move synchronously away from the inner tube 35. As the telescopic shaft of the electric push rod 36 extends, the four abutment plates 39 extend outward at equal intervals around the inner tube 35, causing the outer surface of the abutment plates 39 to gradually contact the inner wall of the guide post 11. During this process, the four abutment plates 39 gradually press and limit the guide post 11. At this time, the two guide posts 11 are limited and fixed on the corresponding support shaft 34.

[0055] It should be noted that when the guide post 11 is fixed to the support shaft 34 by the outward extension of the four abutments 39, the user can stop the extension of the telescopic shafts of the two electric push rods 36 through the control panel 27 and fix the extension position of the telescopic shafts of the two electric push rods 36. Furthermore, the rubber anti-slip pad design on the outer surface of the abutments 39 increases the contact friction with the inner wall of the guide post 11, ensuring the stability of the guide post 11's position.

[0056] At this point, the user drives the moving stage 25 to move on the moving plate 23 via the control panel 27. This causes the moving stage 25 to move the two guide pillars 11 towards the fixed platform 24. The two guide pillars 11 move towards the corresponding grinding shaft 26 and the output shaft of the second servo motor 312, respectively, until the grinding shaft 26 and the output shaft of the second servo motor 312 are respectively inserted into the ends of the two guide pillars 11 away from the support plate 32. When the moving stage 25 can no longer push the guide pillars 11 towards the fixed platform 24, that is, when the two guide pillars 11 are completely inserted into the grinding shaft 26 and the output shaft of the second servo motor 312, the user stops the movement of the moving stage 25 via the control panel 27. At this point, the two guide pillars 11 are respectively inserted into the support shaft 34 and the output shaft of the grinding shaft 26 or the second servo motor 312 at both ends. The inner walls of the two guide pillars 11 are fixed and limited by the corresponding abutment plates 39. At this point, the guide pillars 11 are in a state of being clamped and limited by three points of positioning at both ends and the inner walls. Then the installation of the guide post 11 is completed, and the guide post 11 on the side closer to the grinding wheel 22 has been moved to the grinding position of the grinding wheel 22.

[0057] The user then drives the grinding wheel 22 via the control panel 27 to perform grinding. As the grinding wheel 22 grinds, it gradually grinds the outer surface of the adjacent guide posts 11. During this process, the control panel 27 drives the grinding shaft 26 to rotate, and simultaneously drives the moving plate 23 to move horizontally on the grinding table 21. This allows the grinding shaft 26 to rotate the corresponding guide post 11, while the moving plate 23 moves the guide post 11 horizontally, so that the guide post 11 closest to the grinding wheel 22 is in a state of both rotation and movement. This allows the grinding operation of the grinding wheel 22 to coordinate with the grinding operation, ensuring that the position of the guide post 11 and the grinding wheel 22 changes in real time, thus uniformly grinding the entire outer surface of the guide post 11.

[0058] In the existing technology, as the outer surface of the guide post 11 is polished, it is necessary to check the polishing status of the guide post 11 in real time, that is, to check whether the outer surface of the guide post 11 is uniform and whether the polishing thickness meets the user's requirements. At this point, the user pauses the operation of the grinding spindle 26 and the grinding wheel 22 via the control panel 27. Then, the user drives the shift stage 25 to move away from the fixed stage 24 via the control panel 27. The shift stage 25 then drives the two guide pillars 11 to move away from the fixed stage 24 synchronously until the two guide pillars 11 are no longer connected to the grinding spindle 26 and the output shaft of the second servo motor 312. At this point, the user pauses the movement of the shift stage 25. Then, the user drives the first servo motor 31 to run via the control panel 27, causing the output shaft of the first servo motor 31 to rotate 180 degrees. The output shaft of the first servo motor 31 then drives the support plate 32 to rotate 180 degrees. At this point, the two guide pillars 11 rotate 180 degrees with the support plate 32 around the output shaft of the first servo motor 31, that is, the two guide pillars 11 switch positions. The guide pillar 11 that has been ground is flipped to the side away from the first guide pillar 11, and the guide pillar 11 that has been connected to the output shaft of the second servo motor 312 but has not been ground is flipped to the side closer to the grinding wheel 22. After the two guide posts 11 are swapped, the user stops the rotation of the output shaft of the servo motor 31 and fixes the position of the two guide posts 11.

[0059] After completion, the user drives the moving stage 25 to move towards the fixed stage 24 until the two guide posts 11, after being swapped, are respectively connected to the grinding shaft 26 and the output shaft of the servo motor 212. At this time, the user restarts the operation of the grinding wheel 22, the grinding shaft 26, and the moving plate 23, thereby driving the previously unpolished guide posts 11 to be polished. Simultaneously, the user drives the two electric push rods 214 through the control panel 27, causing the telescopic shafts of the two electric push rods 214 to extend. As the telescopic shafts of the electric push rods 214 extend, the two laser rangefinders 320 converge and approach the corresponding guide posts 11 until the two laser rangefinders 320 are close to the outer surface of the guide posts 11 but do not make contact. The purpose of the two laser rangefinders 320 approaching at this time is to facilitate the two laser rangefinders 320 to better detect the polishing status of the outer surface of the guide posts 11. It should be noted that the guide posts 11 between the two laser rangefinders 320 at this time are the guide posts 11 that have already been polished. The user then drives servo motor 2 (312) and two servo motors 316 (316) via control panel 27. As servo motor 2 (312) operates, its output shaft drives the corresponding guide post 11 to rotate. As servo motors 316 (316) operate, their output shafts rotate, driving the threaded screw 317 to rotate. With the rotation of the threaded screw 317, it tends to cause the moving block 319 to deflect along the threaded path. However, the moving block 319 is limited by the guide post 318, allowing it to slide linearly only along the direction of the guide post 318. Furthermore, as the output shafts of the two servo motors 316 (316) rotate, the two moving blocks 319 drive the two laser rangefinders 320 to move linearly along the corresponding guide post 318. Combined with the rotation of guide post 11 driven by servo motor 2 (312), this achieves synchronous linear movement of the two laser rangefinders 320 while guide post 11 rotates. Two laser rangefinders 320 emit lasers towards the rotating guide post 11 to detect the polishing process. Since the guide post 11 is rotating, the laser rangefinders 320 can detect the polishing condition at different locations on its outer surface. Furthermore, the user can observe the data measured by the two laser rangefinders 320 in real time through the control panel 27. For example, if the measured distance changes, indicating uneven polishing, the user can determine whether the polishing condition of the guide post 11 meets the requirements based on the measured data.

[0060] After the guide post 11 near the grinding wheel 22 has been ground for a period of time, it needs to be inspected. When re-grinding the inspected guide post 11, the user pauses the operation of the two servo motors 316, so that the two laser rangefinders 320 stop moving. At the same time, the user drives the telescopic shafts of the two electric push rods 314 to retract, so that the two laser rangefinders 320 are moved away from each other to the maximum distance. Simultaneously, the user pauses the operation of the grinding spindle 26, servo motor 312, and grinding wheel 22, and moves the stage 25 away from the fixed stage 24, so that the two guide posts 11 are no longer connected to the servo motor 312 and the grinding spindle 26. After completion, the user controls the output shaft of the servo motor 31 to rotate 180 degrees, thereby reversing the positions of the two guide posts 11. After the swap is completed, drive the moving stage 25 to approach the fixed stage 24 again, and reinsert the two guide pillars 11 onto the grinding shaft 26 and the output shaft of the servo motor 2 312. At this time, a new round of grinding and inspection of the guide pillars 11 can be carried out.

[0061] Once the guide post 11 reaches the grinding precision required by the user, the user needs to remove the guide post 11. At this time, the user drives the moving stage 25 away from the fixed stage 24, so that the ends of the two guide posts 11 near the fixed stage 24 are no longer inserted. Then, the user drives the telescopic shafts of the two electric push rods 36 to retract. As the telescopic shafts of the electric push rods 36 retract, the cone block 37 gradually moves away from the push plate 310. Under the elastic contraction of the ring rope 311, the four abutments 39 retract towards the inner tube 35, so that the four abutments 39 no longer limit the guide post 11, and the user can directly remove the guide post 11 from the inner tube 35.

[0062] In summary, the following beneficial effects can be achieved through the operation of the grinding components:

[0063] In the existing technology, grinding and dimensional inspection must be carried out in separate steps. A single guide post 11 needs to go through repeated cycles of clamping, grinding, disassembly, inspection, reassembly, and re-grinding. Moreover, only one guide post 11 can be processed at the same time. Non-machining steps such as clamping and inspection cause the machine tool to be idle for a long time.

[0064] By operating the grinding components, two guide pillars 11 are designed to work in parallel and switch between workstations, allowing the grinding and inspection of the guide pillars 11 to be carried out simultaneously. A single guide pillar 11 can quickly switch between the grinding position and the inspection position, ensuring that there is always one guide pillar 11 grinding and one inspecting. This utilizes the idle time of the existing grinding process and improves the production efficiency of the guide pillar 11 grinding.

[0065] In the existing technology, relying solely on two-point positioning of the conical structures at both ends can only limit axial displacement and cannot constrain lateral interference forces. Furthermore, the contact area is small, and the guide post 11 is prone to swinging and shifting around the conical fulcrum when subjected to cutting forces, which seriously affects the grinding stability.

[0066] By operating the grinding assembly, a three-point clamping and limiting structure with tapered ends and an inner support structure in the middle was designed to form a stable three-point constraint, which effectively constrains the lateral swing and twisting that may occur in the guide post 11 under the action of cutting force, and provides a stable foundation for the grinding of the guide post 11.

[0067] In the existing technology, since the guide post 11 needs to be removed from the fixture for inspection each time the size is checked, and the guide post 11 needs to be re-clamped when the size inspection is not qualified, the contact position and clamping force of the conical structure are difficult to be completely consistent each time, which leads to fluctuation of the positioning reference and thus produces accuracy deviation, resulting in poor consistency during mass production.

[0068] Through the operation of the grinding assembly, the guide post 11 is limited and fixed by the inner support structure when switching between the grinding position and the detection position, so it does not need to be disassembled and always maintains the same clamping state, avoiding positioning deviation caused by repeated clamping; at the same time, the positioning reference of the three-point clamping is more stable, further reducing the impact of clamping error on accuracy.

[0069] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0070] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold for high-rigidity precision mold clamping guide pillars, characterized in that: The equipment includes a grinding assembly for grinding the guide post (11) and checking the dimensional accuracy of the grinding. The grinding assembly includes a grinding component, a support switching component, and an inspection component. The grinding component is used to grind the guide post (11). The support switching component is used to clamp and switch the position of the two guide posts (11). The inspection component is used to check the grinding condition of the guide post (11). The grinding component includes a fixed stage (24) and a moving stage (25). The support switching component is set on the moving stage (25). The inspection component is set on the fixed stage (24). The support switching component includes two support shafts (34) for supporting the ends of the guide post (11) and eight abutments (39) for supporting the inner surface of the guide post (11). The abutments (39) can abut against the inner wall of the guide post (11) for abutment and limit. The inspection component includes two laser rangefinders (320) for checking the diameter of the guide post (11) and a servo motor (312) for driving the guide post (11) to rotate for inspection. The support switching component also includes a servo motor (31), which is fixedly connected to the side of the moving platform (25) near the fixed platform (24). The servo motor (31) is divided into a fixed end and an output shaft. The output shaft of the servo motor (31) faces the fixed platform (24). A bearing plate (32) is fixedly connected to the output shaft of the servo motor (31). Two fixed blocks (33) are symmetrically fixedly connected to the side of the bearing plate (32) near the fixed platform (24). Two support shafts (34) are rotatably connected to the two fixed blocks (33). An inner tube (35) is fixedly connected to the end of each of the two support shafts (34) away from the bearing plate (32). An electric push rod (36) is installed inside the two inner tubes (35). One (36) is divided into a fixed shaft and a telescopic shaft. The fixed shaft of the electric push rod one (36) is fixedly connected to the support rotating shaft (34). The telescopic shaft end of the electric push rod one (36) faces away from the support rotating shaft (34). A cone block (37) is fixedly connected to the telescopic shaft end of each of the two electric push rods one (36). Four guide rods (38) are slidably connected in a ring array inside each of the two inner tubes (35). Both ends of each guide rod (38) pass through the inner tube (35). Eight abutments (39) are fixedly connected to the ends of the eight guide rods (38) that pass through the inner tubes (35). A push plate (310) is fixedly connected to the end of each guide rod (38) inside the inner tube (35). A ring rope (311) is set inside each inner tube (35).

2. The mold for a high-rigidity precision mold guide post according to claim 1, characterized in that: The grinding components also include a grinding table (21) and a grinding wheel (22). The grinding wheel (22) is installed on the top surface of the grinding table (21). A sliding plate (23) is installed on the grinding table (21). A fixed table (24) is fixedly connected to the top of the sliding plate (23). A sliding table (25) is installed on the top of the sliding plate (23). A grinding spindle (26) is installed on the side of the fixed table (24) near the sliding table (25). A control panel (27) is fixedly connected to the grinding table (21).

3. The abrasive for a high-rigidity precision mold clamping guide post according to claim 1, characterized in that: Servo motor 2 (312) is fixedly connected to the fixed platform (24) on the side near the moving platform (25). Servo motor 2 (312) includes a fixed end and an output shaft. The output shaft end of servo motor 2 (312) faces the side near the moving platform (25). The inspection component also includes two fixed plates (313) symmetrically arranged on both sides of servo motor 2 (312). Both fixed plates (313) are fixedly connected to the side of the fixed platform (24) near servo motor 2 (312). Each of the two fixed plates (313) is fixedly connected to an electric push rod 2 (314) on the side of the two fixed plates (313) that are close to each other. The electric push rod 2 (314) is divided into a fixed shaft and a telescopic shaft. The telescopic shaft end of electric push rod 2 (314) faces servo motor 2 (312). Each of the two electric push rods (314) has a support plate (315) fixedly connected to its telescopic shaft end. Each of the two support plates (315) has a servo motor (316) fixedly connected to its support. Each of the two support plates (315) has a threaded screw (317) rotatably connected to its support. Each of the two support plates (315) has a guide post (318) fixedly connected to its support. The servo motor (316) is divided into a fixed end and an output shaft. The output shaft of the servo motor (316) is fixedly connected to one end of the threaded screw (317) that passes through the support plate (315). Each of the two guide posts (318) has a sliding block (319) slidably connected to its guide. Two laser rangefinders (320) are fixedly connected to the side of the two sliding blocks (319) that are close to each other.

4. The abrasive for a high-rigidity precision mold clamping guide post according to claim 1, characterized in that: The grinding shaft (26), the output shaft of the second servo motor (312), and the two support shafts (34) are all configured as conical structures with multiple stepped grooves.

5. The abrasive for a high-rigidity precision mold clamping guide post according to claim 1, characterized in that: The four push plates (310) in the same inner tube (35) are pressed together with the cone block (37).

6. The mold for a high-rigidity precision mold clamping guide post according to claim 1, characterized in that: The outer surface of the abutment (39) is provided with a rubber anti-slip pad.

7. The abrasive for a high-rigidity precision mold clamping guide post according to claim 1, characterized in that: The loop rope (311) inside the same inner tube (35) passes through the corresponding four push plates (310), and the loop rope (311) is made of elastic rubber.

8. The mold for a high-rigidity precision mold guide post according to claim 3, characterized in that: The support plate (315) is L-shaped, and the moving block (319) is threadedly connected to the adjacent threaded screw (317).

9. The mold for a high-rigidity precision mold clamping guide post according to claim 2, characterized in that: The control panel (27) electrically controls the grinding shaft (26), servo motor 1 (31), electric push rod 1 (36), servo motor 2 (312), two electric push rods 2 (314), and two servo motors 3 (316), while two laser rangefinders (320) are electrically connected to the control panel (27).

Images