A mechanism for converting pneumatic linear motion into high-precision angular motion

Abstract

The application relates to the technical field of precision mechanical transmission, and discloses a mechanism for converting pneumatic linear motion into high-precision angular motion, which comprises a box, the front face of the box is fixedly connected with a pneumatic cylinder, and the inner wall of the box is rotationally connected with a rotating shaft; the mechanism further comprises a conversion mechanism which is installed on the inner wall of the box; through a pressing assembly, the relative position of a driven gear and a driving gear is fixed; through a blocking assembly, the bottoms of two inclined arc blocks are respectively attached to two inclined rings which are away from one side of a connecting block; when the bolts appear loosening rotation trend, opposite forces are simultaneously applied to the two inclined arc blocks, the loosening forces generated by the two bolts are offset, the loosening trend of the bolts is inhibited, the loosening of the bolts caused by the vibration of a grinding wheel during grinding wheel dressing is effectively prevented, transmission gaps between the driven gear, the driving gear and a rack reappear, the positioning precision is reduced, and thus the angular positioning precision and transmission stability are ensured.

Description

Technical Field

[0001] This invention relates to the field of precision mechanical transmission technology, specifically to a mechanism for converting pneumatic linear motion into high-precision angular motion. Background Technology

[0002] The core function of the mechanism that converts pneumatic linear motion into high-precision angular motion is to convert the linear reciprocating motion output by standard pneumatic components into controllable angular rotational motion without backlash, with high synchronization and high precision. It is a mature technology route for CNC grinding machines. It often uses a rack to drive the gear to rotate. In order to eliminate the rotational backlash, double gears are usually used to contact the two sides of the rack respectively, thereby eliminating the backlash when the rack moves.

[0003] In the process of using a grinding machine, it is often necessary to dress the dull grinding wheel to a specific shape, which requires changing the rotation angle multiple times. However, when dressing the grinding wheel, due to the unevenness of the grinding wheel, the contact between the diamond pen and the grinding wheel is an intermittent and unstable process, which may cause vibration during the dressing process. The vibration will be transmitted to the gear position. Since double gears are usually fixed by bolts, frequent vibration may cause the bolts to loosen, affecting the tight fit between the gear and the rack, increasing the transmission clearance and reducing the positioning accuracy. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a mechanism for converting pneumatic linear motion into high-precision angular motion, comprising a housing, a cylinder fixedly connected to the front of the housing, and a rotating shaft rotatably connected to the inner wall of the housing, and further comprising: The conversion mechanism is installed on the inner wall of the housing and includes two connecting blocks disposed on the inner wall of the housing. The fixing mechanism is installed on the inner wall of the box, and the fixing mechanism includes a U-shaped plate installed on the inner wall of the box; A limiting mechanism is installed on the inner wall of the housing, and the limiting mechanism includes a connecting plate installed on the inner wall of the housing. In use, the right side of the rotating shaft is connected to the swing arm of the grinding machine. By starting the cylinder, the conversion mechanism is moved, thereby rotating the rotating shaft and converting the horizontal linear motion into angular motion.

[0005] Preferably, the conversion mechanism further includes: The drive assembly is installed on the inner wall of the enclosure. A rotating assembly is mounted on the outer wall of the rotating shaft.

[0006] Preferably, the fixing mechanism further includes: A limit component is installed on the right side of the rotating component; The extrusion assembly is mounted on the right side of the rotating assembly.

[0007] Preferably, the limiting mechanism further includes: The blocking component is installed on top of the connecting block.

[0008] Preferably, the drive assembly includes a sliding sleeve fixedly connected to the inner wall of the housing, a rack slidably connected to the inner wall of the sliding sleeve, and the back of the output end of the cylinder fixedly connected to the front of the rack.

[0009] Preferably, the rotating assembly includes a driving gear fixedly connected to the outer wall of the rotating shaft, and a driven gear rotatably connected to the outer wall of the rotating shaft; The top of the rack meshes with the outer wall of the driven gear, and the top of the rack meshes with the outer wall of the driving gear. The left sides of both connecting blocks are fixedly connected to the right side of the driving gear. The operator rotates the drive gear so that the tooth surface of the first tooth of the drive gear is in contact with the corresponding tooth surface of the second tooth of the rack. Then, the driven gear is rotated so that the tooth surface of the second tooth of the driven gear is in contact with the corresponding tooth surface of the second tooth of the rack. This achieves the misalignment and clearance adjustment of the driven gear and the drive gear. The driven gear and the drive gear are fixed by the limiting component to ensure that the drive gear can drive the driven gear to rotate synchronously when it rotates. When performing grinding wheel dressing operations and needing to adjust the swing angle of the swing arm, the starter cylinder extends, pushing the rack to move. The second tooth of the rack drives the first tooth of the drive gear to rotate, thereby driving the drive gear to rotate. This, in turn, drives the connecting rod and the driven gear to rotate via the U-shaped plate, thus rotating the rotating shaft and adjusting the swing angle. When the rotating shaft needs to rotate in the opposite direction, the starter cylinder retracts, driving the rack to move. The second tooth of the rack drives the third tooth of the driven gear to rotate, driving the driven gear to rotate, which in turn drives the drive gear to rotate, causing the rotating shaft to rotate in the opposite direction. This ensures that the rack can drive the driven gear and drive gear to rotate without any backlash when it moves.

[0010] Preferably, the blocking assembly includes a spring rod 1 fixedly connected to the top of the connecting block, and the outer walls of both spring rods 1 are slidably connected to the inner wall of the connecting plate; The inner wall of the connecting plate is slidably connected to two spring rods, and the bottom of each spring rod is fixedly connected to two inclined arc blocks; When the transmission clearance between the driven gear, the driving gear and the rack needs to be adjusted, the operator first pulls the connecting plate upward, so that the connecting plate squeezes the first spring rod, causing the first spring rod to accumulate stronger rebound force. When the connecting plate rises, it will drive the second spring rod and the inclined arc block to rise.

[0011] Preferably, the limiting component includes a connecting rod fixedly connected to the right side of the driven gear, and an arc-shaped groove is provided on the inner wall of the driving gear; The outer wall of the connecting rod is slidably connected to the inner wall of the arc groove, the right side of the drive gear is slidably connected to the left side of the U-shaped plate, and the inner wall of the U-shaped plate is slidably connected to the outer wall of the connecting rod. When the driven gear rotates, it drives the connecting rod to rotate, and the connecting rod pushes the U-shaped plate to move.

[0012] Preferably, the extrusion assembly includes two bolts disposed on the back of the drive gear, the outer walls of the two bolts being threadedly connected to the inner walls of the two connecting blocks, and the outer walls of the two bolts being fixedly connected with inclined rings; In this process, the inclined arc block is separated from the inclined ring, and then the two bolts are rotated to move them away from the U-shaped plate, so that the bolts are separated from the U-shaped plate. After that, the driven gear and the driving gear can be misaligned and adjusted. After the misalignment and adjustment are in place. The operator rotates the two bolts and moves them towards the U-shaped plate, thereby squeezing the U-shaped plate. The U-shaped plate squeezes the connecting rod, fixing the relative position of the driven gear and the driving gear. This ensures that the driving gear can synchronously drive the driven gear to rotate when it rotates. Then, the operator slides the connecting plate and adjusts the position of the inclined arc blocks, moving the two inclined arc blocks towards the two inclined rings. This aligns the two inclined arc blocks with the corresponding inclined surfaces of the two inclined rings. After the positions are aligned, the connecting plate is slowly lowered, releasing the rebound force of the spring rod. During the descent of the connecting plate, the bottoms of the two inclined arc blocks will fit against the sides of the two inclined rings away from the connecting blocks. When the rotating shaft is affected by the vibration generated during the dressing of the grinding wheel, causing the bolts to loosen and rotate, the two inclined rings will simultaneously apply opposite forces to the inclined arc blocks. The two inclined arc blocks will simultaneously pull the connecting plate away from the U-shaped plate, so that the loosening forces generated by the two bolts cancel each other out, suppressing the loosening tendency of the bolts. This effectively prevents the vibration generated by the grinding wheel during dressing from causing the bolts to loosen, affecting the fixation of the U-shaped plate and connecting rod, causing the transmission gap to reappear between the driven gear and the driving gear and the rack, reducing the positioning accuracy, thereby ensuring the angular positioning accuracy and transmission stability. When the position of the connecting plate is adjusted so that the inclined arc block and the inclined ring are in contact, since the bottom of the inclined arc block and the side of the inclined ring away from the connecting block are both inclined, and the angle of the inclined surfaces is small, the friction angle formed is too small. When the bolt tends to loosen and rotate and drives the inclined ring to rotate, the inclined surface of the inclined ring can only push the inclined arc block to move laterally, but cannot push the inclined arc block to rise, thus effectively blocking the loosening and rotation of the bolt. During the process of the inclined surface of the inclined arc block fitting with the inclined surface of the inclined ring, for example, when the inclined arc block on the right fits with the inclined surface of the right inclined ring, while the inclined arc block on the left does not fit with the inclined surface of the left inclined ring, since spring rod one is always in a pre-compressed state, spring rod one will apply a squeezing force to the connecting plate. The connecting plate will squeeze the spring of spring rod two on the right, allowing it to accumulate rebound force until the inclined surface of the inclined arc block on the left fits with the inclined surface of the inclined ring. This ensures that both inclined arc blocks can fully fit with both inclined rings, effectively preventing the inconsistent squeezing force applied by the two bolts when the bolts squeeze and fix the U-shaped plate. This would lead to differences in the bolt feed distance, resulting in a loose fit between the inclined ring and spring rod two, creating a gap that affects the effective blocking of the bolts.

[0013] The present invention has the following beneficial effects: (1) When using this invention, the operator rotates the driving gear and the driven gear so that the teeth of both gears are respectively in contact with the tooth surface of the rack. The operator fixes the relative position of the driven gear and the driving gear by squeezing the component. Then, the blocking component makes the bottom of the two inclined arc blocks fit with the side of the two inclined rings away from the connecting block. When the bolts show a tendency to loosen and rotate, opposite forces will be applied to the two inclined arc blocks at the same time, so that the loosening force generated by the two bolts cancels each other out, suppressing the loosening tendency of the bolts. This effectively prevents the vibration generated by the grinding wheel during grinding wheel dressing from causing the bolts to loosen, resulting in the reappearance of transmission gap between the driven gear and the driving gear and the rack, reducing the positioning accuracy, thereby ensuring the angular positioning accuracy and transmission stability.

[0014] (2) In the process of the inclined surface of the inclined arc block and the inclined surface of the inclined ring fitting together, for example, when the inclined arc block on the right side fits together with the inclined ring on the right side, while the inclined arc block on the left side does not fit together with the inclined ring on the left side, since the first spring rod is always in a pre-compressed state, the first spring rod will apply a squeezing force to the connecting plate, and the connecting plate will squeeze the spring of the second spring rod on the right side until the inclined surface of the left inclined arc block fits together with the inclined surface of the inclined ring, so that both inclined arc blocks can fit together fully with the two inclined rings, effectively preventing the squeezing force applied by the two bolts from being inconsistent when the bolt squeezes and fixes the U-shaped plate, which will lead to a difference in the bolt feed distance, and will result in the inclined ring and the second spring rod not fitting tightly, with a gap in the fit, affecting the effective blocking of the bolt.

[0015] (3) In this invention, after long-term operation, when it is necessary to readjust the transmission clearance between the driven gear and the rack, the connecting plate is pulled up. Due to the vibration, the bolts tend to loosen. The inclined ring will exert a squeezing force on the inclined arc block, making the two too tight. When the connecting plate is raised, it is difficult to pull the spring rod two and the inclined arc block up. As the connecting plate continues to move, the bottom step of the spring rod two will move into the sliding hole of the connecting plate, which will increase the fit clearance, so that the spring rod two and the inclined arc block can move smoothly. This effectively prevents the inclined arc block and the inclined ring from getting tighter and tighter during long-term vibration, increasing the difficulty of separation and affecting the adjustment of the fit clearance between the driven gear and the rack. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the left sectional view of the housing of the present invention; Figure 4 This is a schematic diagram of the driving gear of the present invention from the right side; Figure 5 This is a schematic diagram of the right-side view of the drive gear structure of the present invention; Figure 6 This is a schematic diagram of the right sectional view of the connecting plate of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle; Figure 8 This is a schematic diagram of the misaligned plane of the driven gear and the driving gear of the present invention.

[0018] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Conversion mechanism; 11. Drive assembly; 12. Rotation assembly; 13. Housing; 14. Cylinder; 15. Rotating shaft; 101. Connecting block; 111. Sliding sleeve; 112. Rack; 121. Driven gear; 122. Drive gear; 2. Fixing mechanism; 21. Limiting assembly; 22. Pressing assembly; 201. U-shaped plate; 211. Connecting rod; 212. Arc groove; 221. Bolt; 222. Inclined ring; 3. Limiting mechanism; 31. Blocking assembly; 301. Connecting plate; 311. Spring rod one; 312. Spring rod two; 313. Inclined arc block. Detailed Implementation

[0019] 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 scope of protection of the present invention.

[0020] Example 1, please refer to Figures 1-5 This invention relates to a mechanism for converting pneumatic linear motion into high-precision angular motion, comprising a housing 13, a cylinder 14 fixedly connected to the front of the housing 13, and a rotating shaft 15 rotatably connected to the inner wall of the housing 13, and further comprising: The conversion mechanism 1 is installed on the inner wall of the housing 13 and includes two connecting blocks 101 disposed on the inner wall of the housing 13. Fixing mechanism 2 is installed on the inner wall of the housing 13. Fixing mechanism 2 includes a U-shaped plate 201 installed on the inner wall of the housing 13. Limiting mechanism 3 is installed on the inner wall of housing 13. Limiting mechanism 3 includes a connecting plate 301 installed on the inner wall of housing 13. In use, the right side of the rotating shaft 15 is connected to the swing arm of the grinding machine. By starting the cylinder 14, the conversion mechanism 1 is pushed to move, thereby causing the rotating shaft 15 to rotate and converting the horizontal linear motion into angular motion.

[0021] The conversion mechanism 1 also includes: Drive assembly 11 is installed on the inner wall of housing 13; Rotating assembly 12 is mounted on the outer wall of rotating shaft 15.

[0022] Fixed mechanism 2 also includes: Limiting component 21 is installed on the right side of rotating component 12; The extrusion assembly 22 is installed on the right side of the rotating assembly 12.

[0023] The limiting mechanism 3 also includes: The blocking component 31 is installed on top of the connecting block 101.

[0024] Example 2, please refer to Figures 3-8 The present invention is a mechanism for converting pneumatic linear motion into high-precision angular motion. Based on the first embodiment, the drive assembly 11 includes a sliding sleeve 111 fixedly connected to the inner wall of the housing 13. A rack 112 is slidably connected to the inner wall of the sliding sleeve 111. The back of the output end of the cylinder 14 is fixedly connected to the front of the rack 112.

[0025] The rotating assembly 12 includes a drive gear 122 fixedly connected to the outer wall of the rotating shaft 15, and a driven gear 121 rotatably connected to the outer wall of the rotating shaft 15; The top of rack 112 meshes with the outer wall of driven gear 121, and the top of rack 112 meshes with the outer wall of driving gear 122. The left sides of both connecting blocks 101 are fixedly connected to the right side of driving gear 122. The operator rotates the drive gear 122 so that the tooth surface of the first tooth of the drive gear 122 is in contact with the tooth surface of the second tooth of the rack 112. Then, the driven gear 121 is rotated so that the tooth surface of the second tooth of the driven gear 121 is in contact with the tooth surface of the second tooth of the rack 112. This achieves the misalignment and clearance adjustment of the driven gear 121 and the drive gear 122. The driven gear 121 and the drive gear 122 are fixed by the limiting component 21 to ensure that the drive gear 122 can drive the driven gear 121 to rotate synchronously when it rotates. When adjusting the swing angle of the swing arm during grinding wheel dressing operations, the starting cylinder 14 extends, pushing the rack 112 to move. The second tooth of the rack 112 drives the first tooth of the drive gear 122 to rotate, thereby driving the drive gear 122 to rotate. Through the U-shaped plate 201, the connecting rod 211 and the driven gear 121 rotate, thereby causing the rotating shaft 15 to rotate and adjusting the swing angle. When the rotating shaft 15 needs to rotate in the opposite direction, the starting cylinder 14 retracts, driving the rack 112 to move. The second tooth of the rack 112 drives the third tooth of the driven gear 121 to rotate, driving the driven gear 121 to rotate, causing the drive gear 122 to rotate, and causing the rotating shaft 15 to rotate in the opposite direction. This ensures that when the rack 112 moves, it can drive the driven gear 121 and the drive gear 122 to rotate without any gaps.

[0026] The blocking assembly 31 includes a spring rod 311 fixedly connected to the top of the connecting block 101, and the outer walls of the two spring rods 311 are slidably connected to the inner wall of the connecting plate 301. Two spring rods 312 are slidably connected to the inner wall of the connecting plate 301, and two inclined arc blocks 313 are fixedly connected to the bottom of each of the two spring rods 312. When the two spring rods 311 are in a pre-compressed state, and the transmission clearance between the driven gear 121 and the driving gear 122 and the rack 112 needs to be adjusted, the operator first pulls the connecting plate 301 to rise, so that the connecting plate 301 squeezes the spring rod 311, causing the spring rod 311 to accumulate a stronger rebound force. When the connecting plate 301 rises, it will drive the spring rod 312 and the inclined arc block 313 to rise.

[0027] The limiting component 21 includes a connecting rod 211 fixedly connected to the right side of the driven gear 121, and an arc groove 212 is provided on the inner wall of the driving gear 122; The outer wall of the connecting rod 211 is slidably connected to the inner wall of the arc groove 212, the right side of the drive gear 122 is slidably connected to the left side of the U-shaped plate 201, and the inner wall of the U-shaped plate 201 is slidably connected to the outer wall of the connecting rod 211. When the driven gear 121 rotates, it will drive the connecting rod 211 to rotate, and the connecting rod 211 will push the U-shaped plate 201 to move.

[0028] The extrusion assembly 22 includes two bolts 221 disposed on the back of the drive gear 122. The outer walls of the two bolts 221 are threadedly connected to the inner walls of the two connecting blocks 101. The outer walls of the two bolts 221 are fixedly connected with inclined rings 222. In this process, the inclined arc block 313 is separated from the inclined ring 222. Then, the two bolts 221 are rotated to move them away from the U-shaped plate 201, thus separating the bolts 221 from the U-shaped plate 201. After this, the driven gear 121 and the driving gear 122 can be misaligned and adjusted. Once the misalignment and adjustment are in place, as shown... Figure 8 As shown; The operator rotates the two bolts 221 and moves them toward the U-shaped plate 201, thereby squeezing the U-shaped plate 201. The U-shaped plate 201 squeezes the connecting rod 211, thus fixing the relative position of the driven gear 121 and the driving gear 122. This ensures that when the driving gear 122 rotates, it can synchronously drive the driven gear 121 to rotate. Then, the operator slides the connecting plate 301 and adjusts the position of the inclined arc block 313, moving the two inclined arc blocks 313 toward the two inclined rings 222. This aligns the two inclined arc blocks 313 with the corresponding inclined surfaces of the two inclined rings 222. After the positions are aligned, the connecting plate 301 is slowly lowered, releasing the rebound force of the spring rod 311. During the descent of the connecting plate 301, the bottoms of the two inclined arc blocks 313 will fit against the side of the two inclined rings 222 away from the connecting block 101. When the rotating shaft 15 is affected by the vibration generated during the dressing process of the grinding wheel, causing the bolt 221 to loosen and rotate, the two inclined rings 222 will simultaneously apply opposite forces to the inclined arc block 313. The two inclined arc blocks 313 will simultaneously pull the connecting plate 301 to move away from the U-shaped plate 201, so that the loosening force generated by the two bolts 221 cancels each other out, suppressing the loosening tendency of the bolt 221. This effectively prevents the vibration generated by the grinding wheel during the dressing process from causing the bolt 221 to loosen, affecting the fixation of the U-shaped plate 201 and the connecting rod 211, causing the transmission gap to reappear between the driven gear 121 and the driving gear 122 and the rack 112, reducing the positioning accuracy, thereby ensuring the angular positioning accuracy and transmission stability. When the position of the connecting plate 301 is adjusted so that the inclined arc block 313 and the inclined ring 222 are in contact, since the bottom of the inclined arc block 313 and the side of the inclined ring 222 away from the connecting block 101 are both inclined surfaces, and the angle of the inclined surfaces is small, the friction angle formed is too small. When the bolt 221 has a tendency to loosen and rotate and drives the inclined ring 222 to rotate, the inclined surface of the inclined ring 222 can only push the inclined arc block 313 to move laterally, and cannot push the inclined arc block 313 to rise, thus effectively blocking the loosening and rotation of the bolt 221. During the process of the inclined surface of the inclined arc block 313 and the inclined surface of the inclined ring 222 fitting together, for example, when the inclined arc block 313 on the right side fits together with the inclined surface of the right inclined ring 222, while the inclined arc block 313 on the left side does not fit together with the inclined surface of the left inclined ring 222, since the spring rod 311 is always in a pre-compressed state, the spring rod 311 will apply a compressive force to the connecting plate 301. The connecting plate 301 will compress the spring of the right spring rod 312, causing it to accumulate a rebound force. Until the inclined surface of the left-side inclined arc block 313 is in contact with the inclined surface of the inclined ring 222, so that both inclined arc blocks 313 can be fully in contact with the two inclined rings 222. This effectively prevents the two bolts 221 from applying inconsistent pressure when the bolts 221 are pressing and fixing the U-shaped plate 201. This would cause the bolts 221 to feed at different distances, resulting in the inclined rings 222 and the spring rod 2 312 not fitting tightly and having a gap, which would affect the effective blocking of the bolts 221.

[0029] The number of the above structures is not limited. Those skilled in the art can freely set them according to actual needs, as long as the above structures are installed at the connection positions of the corresponding structures.

[0030] A specific application of this embodiment is as follows: When using this invention, the right side of the rotating shaft 15 is connected to the swing arm of the grinding machine. When it is necessary to adjust the transmission clearance between the driven gear 121 and the driving gear 122 and the rack 112, the operator first pulls the connecting plate 301 upward, causing the connecting plate 301 to compress the first spring rod 311, so that the first spring rod 311 accumulates a stronger rebound force. When the connecting plate 301 rises, it will drive the second spring rod 312 and the inclined arc block 313 to rise, allowing... The inclined arc block 313 separates from the inclined ring 222. Then, the two bolts 221 are rotated to move them away from the U-shaped plate 201, separating the bolts 221 from the U-shaped plate 201. Next, the operator rotates the drive gear 122, causing the tooth surface of the first tooth of the drive gear 122 to engage with the corresponding tooth surface of the second tooth of the rack 112. Then, the driven gear 121 is rotated, causing the tooth surface of the second tooth of the driven gear 121 to engage with the corresponding tooth surface of the second tooth of the rack 112. Figure 8 As shown, when the driven gear 121 rotates, it will drive the connecting rod 211 to rotate, and the connecting rod 211 will push the U-shaped plate 201 to move. After the driven gear 121 and the driving gear 122 are misaligned and adjusted to the correct position; The operator rotates the two bolts 221 and moves them toward the U-shaped plate 201, thereby squeezing the U-shaped plate 201. The U-shaped plate 201 squeezes the connecting rod 211, thus fixing the relative position of the driven gear 121 and the driving gear 122. This ensures that when the driving gear 122 rotates, it can synchronously drive the driven gear 121 to rotate. Then, the operator slides the connecting plate 301 and adjusts the position of the inclined arc block 313, moving the two inclined arc blocks 313 toward the two inclined rings 222. This aligns the two inclined arc blocks 313 with the corresponding inclined surfaces of the two inclined rings 222. After the positions are aligned, the connecting plate 301 is slowly lowered, releasing the rebound force of the spring rod 311. During the descent of the connecting plate 301, the bottoms of the two inclined arc blocks 313 will fit against the side of the two inclined rings 222 away from the connecting block 101. When adjusting the swing angle of the swing arm during grinding wheel dressing, the starting cylinder 14 extends, pushing the rack 112 to move. The second tooth of the rack 112 drives the first tooth of the drive gear 122 to rotate, thereby driving the drive gear 122 to rotate. Through the U-shaped plate 201, the connecting rod 211 and the driven gear 121 rotate, thereby causing the rotating shaft 15 to rotate and adjusting the swing angle. When the rotating shaft 15 needs to rotate in the opposite direction, the starting cylinder 14 retracts, driving the rack 112 to move. The second tooth of the rack 112 drives the third tooth of the driven gear 121 to rotate, driving the driven gear 121 to rotate, causing the drive gear 122 to rotate, causing the rotating shaft 15 to rotate in the opposite direction. This ensures that when the rack 112 moves, it can drive the driven gear 121 and the drive gear 122 to rotate without any gaps. By having two inclined arc blocks 313 contact the two inclined rings 222 on the side away from the connecting block 101 respectively, when the rotating shaft 15 is affected by the vibration generated during the grinding wheel dressing process, causing the bolt 221 to loosen and rotate, the two inclined rings 222 will simultaneously apply opposite forces to the inclined arc blocks 313, and the two inclined arc blocks 313 will simultaneously pull the connecting plate 301 to move away from the U-shaped plate 201, so that the loosening force generated by the two bolts 221 cancels each other out, suppressing the loosening tendency of the bolts 221, effectively preventing the vibration generated by the grinding wheel during grinding wheel dressing from causing the bolts 221 to loosen, affecting the fixation of the U-shaped plate 201 and the connecting rod 211, causing the transmission gap to reappear between the driven gear 121 and the driving gear 122 and the rack 112, reducing the positioning accuracy, thereby ensuring the angular positioning accuracy and transmission stability; When the position of the connecting plate 301 is adjusted so that the inclined arc block 313 and the inclined ring 222 are in contact, since the bottom of the inclined arc block 313 and the side of the inclined ring 222 away from the connecting block 101 are both inclined surfaces, and the angle of the inclined surfaces is small, the friction angle formed is too small. When the bolt 221 has a tendency to loosen and rotate and drives the inclined ring 222 to rotate, the inclined surface of the inclined ring 222 can only push the inclined arc block 313 to move laterally, and cannot push the inclined arc block 313 to rise, thus effectively blocking the loosening and rotation of the bolt 221. During the process of the inclined surface of the inclined arc block 313 and the inclined surface of the inclined ring 222 fitting together, for example, when the inclined arc block 313 on the right side fits together with the inclined surface of the right inclined ring 222, while the inclined arc block 313 on the left side does not fit together with the inclined surface of the left inclined ring 222, since the spring rod 311 is always in a pre-compressed state, the spring rod 311 will apply a compressive force to the connecting plate 301. The connecting plate 301 will compress the spring of the right spring rod 312, causing it to accumulate a rebound force. Until the inclined surface of the left inclined arc block 313 is in contact with the inclined surface of the inclined ring 222, so that both inclined arc blocks 313 can be fully in contact with the two inclined rings 222. This effectively prevents the two bolts 221 from applying inconsistent pressure when the bolts 221 are pressing and fixing the U-shaped plate 201. This would cause the bolts 221 to feed at different distances, resulting in the inclined rings 222 and the spring rod 2 312 not being tightly in contact, leaving a gap and affecting the effective blocking of the bolts 221. After long-term operation, when it is necessary to readjust the transmission clearance between the driven gear 121 and the rack 112, pulling the connecting plate 301 upwards may cause the bolt 221 to loosen due to vibration. Blocked by the two inclined arc blocks 313, the inclined ring 222 applies pressure to the inclined arc blocks 313, causing them to fit too tightly. This makes it difficult to pull the spring rod 312 and the inclined arc blocks 313 upwards when the connecting plate 301 rises. As the connecting plate 301 continues to move, the bottom step of the spring rod 312 will move into the sliding hole of the connecting plate 301. Figure 7 As shown by the position of G, the fit clearance will increase, reducing the squeezing force of the inclined ring 222 on the inclined arc block 313, allowing the spring rod 212 and the inclined arc block 313 to move smoothly. This effectively prevents the inclined arc block 313 from becoming increasingly tighter with the inclined ring 222 during long-term vibration, increasing the difficulty of separation and affecting the adjustment of the fit clearance between the driven gear 121 and the driving gear 122 and the rack 112.

[0031] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A mechanism for converting pneumatic linear motion into high-precision angular motion, comprising a housing (13), wherein a cylinder (14) is fixedly connected to the front of the housing (13), and a rotating shaft (15) is rotatably connected to the inner wall of the housing (13), characterized in that, Also includes: The conversion mechanism (1) is installed on the inner wall of the housing (13) and includes two connecting blocks (101) installed on the inner wall of the housing (13). Fixing mechanism (2), which is installed on the inner wall of the box (13), and includes a U-shaped plate (201) installed on the inner wall of the box (13). Limiting mechanism (3), the limiting mechanism (3) is installed on the inner wall of the box (13), the limiting mechanism (3) includes a connecting plate (301) installed on the inner wall of the box (13). In use, by starting the cylinder (14), the conversion mechanism (1) is pushed to move, thereby causing the rotating shaft (15) to rotate, and the horizontal linear motion is converted into angular motion.

2. The mechanism for converting pneumatic linear motion into high-precision angular motion according to claim 1, characterized in that: The conversion mechanism (1) further includes: A drive assembly (11) is installed on the inner wall of the housing (13); Rotating assembly (12) is mounted on the outer wall of rotating shaft (15).

3. A mechanism for converting pneumatic linear motion into high-precision angular motion according to claim 2, characterized in that: The fixing mechanism (2) also includes: A limiting component (21) is installed on the right side of the rotating component (12); The extrusion assembly (22) is mounted on the right side of the rotation assembly (12).

4. A mechanism for converting pneumatic linear motion into high-precision angular motion according to claim 3, characterized in that: The limiting mechanism (3) further includes: A blocking component (31) is mounted on top of the connecting block (101).

5. A mechanism for converting pneumatic linear motion into high-precision angular motion according to claim 4, characterized in that: The drive assembly (11) includes a sliding sleeve (111) fixedly connected to the inner wall of the housing (13), and a rack (112) is slidably connected to the inner wall of the sliding sleeve (111). The back of the output end of the cylinder (14) is fixedly connected to the front of the rack (112).

6. A mechanism for converting pneumatic linear motion into high-precision angular motion according to claim 5, characterized in that: The rotating assembly (12) includes a drive gear (122) fixedly connected to the outer wall of the rotating shaft (15), and a driven gear (121) is rotatably connected to the outer wall of the rotating shaft (15). The top of the rack (112) meshes with the outer wall of the driven gear (121), and the top of the rack (112) meshes with the outer wall of the driving gear (122). The left sides of both connecting blocks (101) are fixedly connected to the right side of the driving gear (122). When the starting cylinder (14) extends, it pushes the rack (112) to move. When the rack (112) moves, it meshes with the drive gear (122), thereby pushing the drive gear (122) to rotate, causing the rotating shaft (15) to rotate, thus converting the horizontal linear motion into angular motion.

7. A mechanism for converting pneumatic linear motion into high-precision angular motion according to claim 6, characterized in that: The limiting component (21) includes a connecting rod (211) fixedly connected to the right side of the driven gear (121), and the inner wall of the driving gear (122) is provided with an arc groove (212). The outer wall of the connecting rod (211) is slidably connected to the inner wall of the arc groove (212), the right side of the drive gear (122) is slidably connected to the left side of the U-shaped plate (201), and the inner wall of the U-shaped plate (201) is slidably connected to the outer wall of the connecting rod (211). In this process, the driven gear (121) is rotated so that it engages with the rack (112).

8. A mechanism for converting pneumatic linear motion into high-precision angular motion according to claim 7, characterized in that: The extrusion assembly (22) includes two bolts (221) disposed on the back of the drive gear (122). The outer walls of the two bolts (221) are threadedly connected to the inner walls of the two connecting blocks (101). The outer walls of the two bolts (221) are fixedly connected with inclined rings (222). In this process, by rotating two bolts (221) and moving them toward the U-shaped plate (201), the U-shaped plate (201) is squeezed, thereby fixing the U-shaped plate (201) and the connecting rod (211), so that the driving gear (122) and the driven gear (121) rotate synchronously.

9. A mechanism for converting pneumatic linear motion into high-precision angular motion according to claim 4, characterized in that: The blocking assembly (31) includes a spring rod (311) fixedly connected to the top of the connecting block (101), and the outer walls of the two spring rods (311) are slidably connected to the inner wall of the connecting plate (301). The inner wall of the connecting plate (301) is slidably connected to two spring rods (312), and the bottom of each of the two spring rods (312) is fixedly connected to two inclined arc blocks (313). Among them, the two spring rods one (311) are in a pre-compressed state. By pulling the connecting plate (301) upward, they drive the spring rod two (312) and the inclined arc block (313) upward.

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