A positioning mechanism for machining the outer circle of a main shaft

Abstract

The utility model discloses a main shaft external circle processing positioning mechanism relates to main shaft processing technical field, the utility model discloses a base still includes: positioning mechanism, the positioning mechanism sets up inside fixed pipe, positioning mechanism is used for quick positioning fixed main shaft, the utility model discloses a positioning mechanism is set up, specifically is the start motor drives gear no.

Description

Technical Field

[0001] This utility model belongs to the field of spindle machining technology, and in particular relates to a positioning mechanism for machining the outer circle of a spindle. Background Technology

[0002] A spindle external diameter machining positioning mechanism is a mechanical device designed specifically for machining scenarios of spindle external diameter surfaces (such as turning, grinding, milling, etc.). Its core function is to precisely fix the spindle's posture and position through specific clamping and limiting structures during the external diameter machining process, so as to limit the spindle's radial movement, axial displacement and circumferential deflection during machining, and ensure that the spindle axis and the machining equipment (such as machine tool spindle, tool path) maintain a preset coaxiality or positional relationship. Currently, most spindle positioning methods involve first clamping and fixing one end of the spindle with a mechanical fixture, and then providing stable support to the other end. After machining is completed, the fixture is released. This method requires the use of specific tools when operating the fixture, and the operation is cumbersome and time-consuming. In large-scale operations, manual operation of the fixture will greatly increase the workload of the workers and take a long time, which will significantly reduce the machining efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a positioning mechanism for machining the outer diameter of a spindle. Specifically, the positioning mechanism involves a motor that drives gear two to rotate clockwise, a gear ring to rotate counterclockwise, and three gears and an eccentric block to rotate clockwise. The convex end of the eccentric block pushes the positioning plate towards the spindle. When all the balls on the three positioning plates are in contact with the spindle, the left end is fixed. To remove the plate, the motor drives gear two to rotate counterclockwise, the gear ring to rotate clockwise, and gear one to rotate counterclockwise. The eccentric block no longer presses against the positioning plate, and spring one pulls the positioning plate away from the spindle, releasing the left end from fixation. This design allows for quick and easy positioning and unpositioning of the spindle, effectively improving machining efficiency. It solves the problem that manual operation of mechanical fixtures for spindle positioning is cumbersome, and in large-scale machining, manual operation not only increases the workload of workers but also significantly reduces machining efficiency.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a positioning mechanism for machining the outer diameter of a spindle, comprising: a base, a vertical plate 1 fixedly connected to the left side of the top of the base, a fixing tube fixedly connected to the right side of the vertical plate 1, a second vertical plate 2 fixedly connected to the right side of the top of the base, and a spindle positioned above the base; a positioning mechanism, which is located inside the fixing tube and is used for quickly positioning and fixing the spindle, the positioning mechanism comprising three positioning plates, three rotating shafts rotatably connected inside the fixing tube, an eccentric block fixedly connected to the outer surface of each rotating shaft, a gear 1 fixedly connected to the left end of each rotating shaft, and a gear ring on the left side of the first vertical plate 1; and a support mechanism, located to the left of the second vertical plate 2 and used to support the spindle; the three positioning plates are arranged in a ring, the positioning plates are arc-shaped, and the positioning plates are adapted to the outer surface of the spindle.

[0005] Furthermore, the positioning mechanism includes several limiting rods. The sides of the three positioning plates that are far apart from each other are fixedly connected to the ends of the limiting rods that are close to each other. The limiting rods slide and limit the movement of the fixed tube. A spring is sleeved on the outside of the limiting rod. The end of the spring that is close to the fixed tube is fixedly connected to the outer surface of the fixed tube, and the end of the spring that is far away from the fixed tube is fixedly connected to the limiting rod. The cross-section of the limiting rod is T-shaped. The spring is used to push the positioning plate to reset, and the limiting rod can prevent the positioning rod from falling off.

[0006] Furthermore, the support mechanism includes a fixed rod, the right end of which is fixedly connected to the left side of the second vertical plate, and a rotating tube is provided on the outer side of the fixed rod; the outer surface of the fixed rod is provided with threads, the inner wall of the rotating tube is provided with threaded grooves, and the rotating tube is threadedly connected to the fixed rod.

[0007] Furthermore, the positioning plate has several circular grooves inside, and a ball is fixedly connected inside the circular groove; the diameter of the opening of the circular groove is smaller than the diameter of the ball, and the ball is made of rubber. The smaller diameter of the opening of the circular groove than the diameter of the ball can effectively prevent it from falling out of the circular groove, and the ball is connected to the circular groove by adhesive, which further prevents the ball from falling out of the circular groove.

[0008] Furthermore, an anti-detachment block is fixedly connected to the right side of the rotating shaft, the first gear meshes with the gear ring, a motor is fixedly connected to the left side of the top of the base, a second gear is fixedly connected to the right output end of the motor, the second gear meshes with the gear ring, a protective ring is fixedly connected to the left side of the first vertical plate, the outer surface of the gear ring is rotatably connected to the inner wall of the protective ring, three support blocks are fixedly connected to the inner wall of the fixed tube, and the rotating shaft is rotatably connected to the support blocks; the right side of the eccentric block and the left side of the anti-detachment block contact the right side of the inner wall and the outer right side of the fixed tube, respectively, and the protective ring is used to support and limit the gear ring.

[0009] Furthermore, a convex ring is fixedly connected to the left side of the inner wall of the rotating tube, and a triangular block is fixedly connected to the left side of the fixing rod. The triangular block has three sliding grooves inside, and three wedges are provided on the left side of the rotating tube. The wedges have annular grooves inside, and the convex ring is slidably and rotatably connected to the annular grooves. A groove is provided on the left side of the wedges. The convex ring is used to prevent the wedges from disengaging from the rotating tube.

[0010] Furthermore, three wedges are provided on the outer side of the triangular block. Each of the three wedges is fixedly connected to a limiting rod on the side closest to each other. The limiting rod cooperates with the sliding groove for limiting movement. A spring is sleeved on the outer side of the limiting rod. The ends of the three springs that are close to each other are fixedly connected to the outer surface of the triangular block, and the ends that are far apart from each other are fixedly connected to the sides of the three wedges that are close to each other. The limiting rod has a T-shaped cross-section. The spring is used to pull the wedge to reset. When the wedge moves to the left limit position, the limiting rod will enter the groove to prevent the wedge from directly contacting the limiting rod.

[0011] This utility model has the following beneficial effects: This invention employs a positioning mechanism. Specifically, a starter motor drives gear two to rotate clockwise, while the gear ring rotates counterclockwise, causing three gears and an eccentric block to rotate clockwise. The convex end of the eccentric block pushes the positioning plate towards the main shaft. When all the balls on the three positioning plates are in contact with the main shaft, the left end is fixed. To remove the plate, the starter motor drives gear two to rotate counterclockwise, while the gear ring rotates clockwise, causing gear one to rotate counterclockwise. The eccentric block no longer presses against the positioning plate, and spring one pulls the positioning plate away from the main shaft, releasing the left end from fixation. This design allows for quick and easy positioning and unpositioning of the main shaft, effectively improving processing efficiency.

[0012] This utility model features a support mechanism. Specifically, rotating the rotating tube clockwise causes it to move to the left along with three wedges, squeezing wedge two away from the triangular block and stretching spring two. Once wedge two contacts the inner wall of the clamping hole, the right end of the spindle is fixed. To remove it, rotating the rotating tube counterclockwise causes it to move to the right along with the wedges. Spring two pulls wedge two back to its original position, unlocking the right end of the spindle. This structure provides quick and easy support for the spindle end, ensuring stable machining operations.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the toothed ring structure of this utility model; Figure 3 This is a schematic diagram of the bead structure of this utility model; Figure 4 This is a schematic diagram of the clamping hole structure of this utility model; Figure 5 This is a schematic diagram of the rotating pipe structure of this utility model; Figure 6 This is a schematic diagram of the annular groove structure of this utility model; Figure 7 This is a schematic diagram of the slide groove structure of this utility model.

[0016] The attached diagram lists the components represented by each number as follows: 1. Base; 11. Vertical plate one; 111. Fixing tube; 12. Vertical plate two; 13. Main shaft; 131. Clamping hole; 2. Positioning mechanism; 21. Positioning plate; 211. Limiting rod one; 212. Spring one; 213. Circular groove; 214. Circular ball; 22. Rotating shaft; 221. Anti-detachment block; 222. Eccentric block; 223. Gear one; 224. Gear ring; 225. Gear two; 226. Motor; 227. Protective ring; 228. Support block; 3. Support mechanism; 31. Fixing rod; 32. Rotating tube; 321. Convex ring; 33. Triangular block; 331. Sliding groove; 34. Wedge block; 341. Groove; 342. Annular groove; 35. Wedge block two; 351. Limiting rod two; 352. Spring two. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-7As shown, this utility model is a positioning mechanism for machining the outer circle of a spindle, including a base 1, a vertical plate 11 fixedly connected to the left side of the top of the base 1, a fixing tube 111 fixedly connected to the right side of the vertical plate 11, a second vertical plate 12 fixedly connected to the right side of the top of the base 1, and a spindle 13 arranged above the base 1. It also includes: a positioning mechanism 2, which is located inside the fixing tube 111 and is used for quickly positioning and fixing the spindle 13. The positioning mechanism 2 includes three positioning plates 21, three rotating shafts 22 rotatably connected inside the fixing tube 111, an eccentric block 222 fixedly connected to the outer surface of the rotating shaft 22, a gear 223 fixedly connected to the left end of the rotating shaft 22, and a gear ring 224 arranged on the left side of the vertical plate 11; and a support mechanism 3, which is located on the left side of the second vertical plate 12 and is used to support the spindle 13. The three positioning plates 21 are arranged in a ring, and the positioning plates 21 are arc-shaped and adapted to the outer surface of the spindle 13. The positioning mechanism 2 includes several limiting rods 211. The sides of the three positioning plates 21 that are far apart from each other are fixedly connected to the ends of the limiting rods 211 that are close to each other. The limiting rods 211 are slidably limited in fit with the fixed tube 111. A spring 212 is sleeved on the outside of the limiting rods 211. The end of the spring 212 near the fixed tube 111 is fixedly connected to the outer surface of the fixed tube 111, and the end of the spring 212 away from the fixed tube 111 is fixedly connected to the limiting rods 211. The cross-section of the limiting rods 211 is T-shaped, and the spring 212 is used to push the positioning plates 21 to reset. The support mechanism 3 includes a fixed rod 31. The right end of the fixed rod 31 is fixedly connected to the left side of the vertical plate 12. A rotating tube 32 is provided on the outside of the fixed rod 31. The outer surface of the fixed rod 31 is threaded, and the inner wall of the rotating tube 32 is threaded. The rotating tube 32 is threadedly connected to the fixed rod 31. The positioning plate 21 has several circular grooves 213 inside, and a ball 214 is fixedly connected inside the circular groove 213; the diameter of the opening of the circular groove 213 is smaller than the diameter of the ball 214, and the ball 214 is made of rubber.An anti-detachment block 221 is fixedly connected to the right side of the rotating shaft 22. Gear 1 223 meshes with the gear ring 224. A motor 226 is fixedly connected to the left side of the top of the base 1. Gear 225 is fixedly connected to the right output end of the motor 226. Gear 225 meshes with the gear ring 224. A protective ring 227 is fixedly connected to the left side of the vertical plate 11. The outer surface of the gear ring 224 is rotatably connected to the inner wall of the protective ring 227. Three support blocks 228 are fixedly connected to the inner wall of the fixed tube 111. The rotating shaft 22 is rotatably connected to the support blocks 228. When the motor 226 is started, it drives gear 225 to rotate clockwise, gear ring 224 to rotate counterclockwise, and drives gear 1 223 and eccentric block 222 to rotate clockwise. The convex end of eccentric block 222 pushes... The moving positioning plate 21 moves toward the main shaft 13. When the balls 214 on the three positioning plates 21 are all in contact with the main shaft 13, their left ends are fixed. When removed, the starting motor 226 drives the gear 225 to rotate counterclockwise, the gear ring 224 rotates clockwise and drives the gear 1 223 to rotate counterclockwise. The eccentric block 222 no longer presses the positioning plate 21, and the spring 1 212 pulls the positioning plate 21 away from the main shaft 13, and the left end is released from fixation. This setting can quickly position and release the main shaft 13, which is simple and fast and can effectively improve processing efficiency. The right side of the eccentric block 222 and the left side of the anti-detachment block 221 are in contact with the right side of the inner wall and the right side of the outer wall of the fixed tube 111, respectively. The protective ring 227 is used to support and limit the gear ring 224.

[0019] A convex ring 321 is fixedly connected to the left side of the inner wall of the rotating tube 32, and a triangular block 33 is fixedly connected to the left side of the fixing rod 31. The triangular block 33 has three sliding grooves 331 inside. Three wedges 34 are provided on the left side of the rotating tube 32. The wedges 34 have annular grooves 342 inside. The convex ring 321 is slidably and rotatably connected to the annular grooves 342. The wedges 34 have a groove 341 on the left side. The convex ring 321 is used to prevent the wedges 34 from disengaging from the rotating tube 32. Three wedges 35 are provided on the outer side of the triangular block 33. Each of the three wedges 35 is fixedly connected to a limiting rod 351 on its closest side. The limiting rod 351 slides and limits the movement of the sliding groove 331. Springs 352 are sleeved on the outer side of the limiting rods 351. The ends of the three springs 352 that are close to each other are fixedly connected to the outer surface of the triangular block 33, and the ends that are far apart from each other are fixedly connected to the close sides of the three wedges 35. Rotating the rotating tube 32 clockwise will cause it to engage with the three wedges 35... 4. Move to the left together, squeezing wedge 35 away from triangular block 33, stretching spring 352. When wedge 35 contacts the inner wall of clamping hole 131, the right end of spindle 13 is fixed. When removing, rotate tube 32 counterclockwise to move it and wedge 34 to the right. Spring 352 pulls wedge 35 back to its original position, and the right end of spindle 13 is unlocked. This structure can quickly support the end of spindle 13, which is convenient and fast, and makes the machining operation stable. The cross-section of limit rod 351 is T-shaped, and spring 352 is used to pull wedge 35 back to its original position.

[0020] A specific application of this embodiment is as follows: In use, the right end of the spindle 13 is inserted into the protective ring 227 and the fixing tube 111. When the triangular block 33 is inserted into the clamping hole 131 on the right side of the spindle 13, the spindle 13 is lowered. At this time, the outer surface of the spindle 13 contacts several balls 214 on the inner arc surface of the two positioning plates 21 below. At this time, the motor 226 is started to drive the gear 225 to rotate clockwise. Since the gear 225 meshes with the gear ring 224, the gear ring 224 will rotate counterclockwise, and the three gears 223 will rotate counterclockwise. All three gears 223 mesh with the gear ring 224, so the three gears 223 will drive the eccentric block 222 to rotate clockwise through the rotating shaft 22. At this time, the convex end of the eccentric block 222 will squeeze and push the positioning plate 21 to move towards the main shaft 13. The limiting rod 211 squeezes the spring 212. At this time, the three positioning plates 21 approach each other. When several balls 214 on the inner arc surface of the three positioning plates 21 are in contact with the outer surface of the main shaft 13, the balls 214 will be squeezed and deformed, thereby increasing the friction. At this time, the left end of the main shaft 13 has been positioned and fixed. The operator then rotates the rotating tube 32 clockwise. Since the rotating tube 32 is threadedly connected to the fixed rod 31, and the rotating tube 32 is rotatably connected to the groove 341 inside the wedge block 34 via the convex ring 321, the rotating tube 32 and the three wedge blocks 34 will move to the left together. During this movement, the three wedge blocks 34 will respectively press the wedge block 35 they are in contact with away from the triangular block 33. At this time, all three springs 352 are stretched. When the sides of the three wedge blocks 35 that are moving away from each other are in contact with the inner wall of the clamping hole 131, the rotating tube 32 and the wedge blocks 34 can no longer move. At this point, the right end of the spindle 13 is fixed, and the spindle 13 can then be machined. After machining is completed, the rotating tube 32 is rotated counterclockwise. This causes the three wedges 34 to move to the right together. At this time, the three wedges 34 no longer press against the second wedge 35. The three springs 352 pull the three wedges 35 closer to each other through their own elastic force, completing the reset. At this time, the right end of the main shaft 13 is released from fixation. Then, the motor 226 is started to drive the gear 225 to rotate counterclockwise, the gear ring 224 to rotate clockwise, and drive the three gears 223 to rotate counterclockwise. At this time, the convex end of the eccentric block 222 gradually stops pressing against the positioning plate 21. The four springs 212 pull the positioning plate 21 away from the main shaft 13 through their own elastic force. The other two positioning plates 21 move in the same way. At this time, the left end of the main shaft 13 is released from fixation and can be moved to the left and taken out. It should be noted that the control of motor 226 in this application can all be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be set using existing technologies, such as PLC.

[0021] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model 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 present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A positioning mechanism for machining the outer diameter of a spindle, comprising a base (1), wherein a vertical plate (11) is fixedly connected to the left side of the top of the base (1), a fixing tube (111) is fixedly connected to the right side of the vertical plate (11), a second vertical plate (12) is fixedly connected to the right side of the top of the base (1), and a spindle (13) is disposed above the base (1), characterized in that, Also includes: A positioning mechanism (2) is installed inside a fixed tube (111). The positioning mechanism (2) is used to quickly position and fix the main shaft (13). The positioning mechanism (2) includes three positioning plates (21). Three rotating shafts (22) are rotatably connected inside the fixed tube (111). An eccentric block (222) is fixedly connected to the outer surface of the rotating shaft (22). A gear (223) is fixedly connected to the left end of the rotating shaft (22). A gear ring (224) is provided on the left side of the vertical plate (11). Support mechanism (3) is provided on the left side of vertical plate two (12) and is used to support the main shaft (13). Among them, the three positioning plates (21) are arranged in a ring, the positioning plates (21) are arc-shaped, and the positioning plates (21) are adapted to the outer surface of the main shaft (13).

2. The positioning mechanism for machining the outer diameter of a spindle according to claim 1, characterized in that, The positioning mechanism (2) includes several limiting rods (211). The three positioning plates (21) are fixedly connected to the ends of the limiting rods (211) that are close to each other on the side away from each other. The limiting rods (211) are slidably limited to the fixed tube (111). A spring (212) is sleeved on the outside of the limiting rods (211). The end of the spring (212) close to the fixed tube (111) is fixedly connected to the outer surface of the fixed tube (111). The end of the spring (212) away from the fixed tube (111) is fixedly connected to the limiting rods (211). The limiting rod (211) has a T-shaped cross section, and the spring (212) is used to push the positioning plate (21) to reset.

3. The positioning mechanism for machining the outer diameter of a spindle according to claim 1, characterized in that, The support mechanism (3) includes a fixed rod (31), the right end of which is fixedly connected to the left side of the vertical plate (12), and a rotating tube (32) is provided on the outside of the fixed rod (31). The outer surface of the fixed rod (31) is provided with threads, the inner wall of the rotating tube (32) is provided with threaded grooves, and the rotating tube (32) is threadedly connected to the fixed rod (31).

4. The positioning mechanism for machining the outer diameter of a spindle according to claim 2, characterized in that, The positioning plate (21) has several circular grooves (213) inside, and a round bead (214) is fixedly connected inside the circular groove (213). Wherein, the diameter of the opening of the circular groove (213) is smaller than the diameter of the ball (214), and the ball (214) is made of rubber.

5. A positioning mechanism for machining the outer diameter of a spindle according to claim 4, characterized in that, An anti-detachment block (221) is fixedly connected to the right side of the rotating shaft (22). The first gear (223) meshes with the gear ring (224). A motor (226) is fixedly connected to the left side of the top of the base (1). A second gear (225) is fixedly connected to the right output end of the motor (226). The second gear (225) meshes with the gear ring (224). A protective ring (227) is fixedly connected to the left side of the vertical plate (11). The outer surface of the gear ring (224) is rotatably connected to the inner wall of the protective ring (227). Three support blocks (228) are fixedly connected to the inner wall of the fixed tube (111). The rotating shaft (22) is rotatably connected to the support blocks (228). The right side of the eccentric block (222) and the left side of the anti-detachment block (221) are in contact with the right side of the inner wall and the right side of the outer wall of the fixing tube (111), respectively, and the protective ring (227) is used to support and limit the toothed ring (224).

6. The positioning mechanism for machining the outer diameter of a spindle according to claim 3, characterized in that, A convex ring (321) is fixedly connected to the left side of the inner wall of the rotating tube (32), and a triangular block (33) is fixedly connected to the left side of the fixed rod (31). The triangular block (33) has three sliding grooves (331) inside. Three wedges (34) are provided on the left side of the rotating tube (32). The wedges (34) have annular grooves (342) inside. The convex ring (321) is slidably and rotatably connected to the annular grooves (342). The wedges (34) have grooves (341) on the left side. The convex ring (321) is used to prevent the wedge (34) from disengaging from the rotating tube (32).

7. The positioning mechanism for machining the outer diameter of a spindle according to claim 6, characterized in that, Three wedges (35) are provided on the outside of the triangular block (33). Limiting rods (351) are fixedly connected to the sides of the three wedges (35) that are close to each other. The limiting rods (351) slide and limit the movement of the groove (331). Springs (352) are sleeved on the outside of the limiting rods (351). The ends of the three springs (352) that are close to each other are fixedly connected to the outer surface of the triangular block (33). The ends of the three springs (352) that are far apart from each other are fixedly connected to the sides of the three wedges (35) that are close to each other. The second limiting rod (351) has a T-shaped cross-section, and the second spring (352) is used to pull the second wedge (35) to reset.

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