Rotary indexing device

Abstract

The utility model discloses a rotary dividing device which comprises a bottom plate, the bottom of the bottom plate is in bolted connection with a rotating mechanism, the top of the bottom plate is in bolted connection with a transmission assembly, the top of the transmission assembly is fixedly connected with a clamping assembly, and the clamping assembly and the transmission assembly rotate coaxially. The clamping assembly comprises a center shaft with the top in threaded connection with a spring clamp. According to the utility model, the proximity sensor and the stop block which are relatively inducted are arranged, so that the whole device can quickly position an original point when in use, thereby ensuring accurate angle rotation in the later period and improving the machining precision of a workpiece, and a quick clamping assembly is additionally arranged on the basis of a rotating mechanism, so that the machining efficiency is improved. According to the positioning and fixing device, a workpiece needing to be machined can be rapidly positioned and fixed through the positioning and fixing device, the internal center shaft is used for driving the center shaft to synchronously rotate along with the stop block when the workpiece rotates, and the stability of the workpiece in the rotating process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of the production and application of micro motors for automobiles, in particular to a rotary indexing device. Background Technique

[0002] A micro motor is a motor with a power below 750 watts, an outer diameter of the machine base not greater than 160 mm or a center height not greater than 90 mm, which is collectively called a micro special motor. It combines multiple disciplines such as mechatronics and is an indispensable power source in modern industrial society. The application fields of micro motors are extensive, and they can be found in robots, household appliances, automobiles, medical equipment, industrial automation, aerospace industry, etc. In recent years, with the continuous progress of technology, the micro motor industry has also faced new development trends and challenges.

[0003] In the production process of micro motors for automobiles, it is often necessary for workpieces to rotate accurately by a certain angle to achieve precise circumferential positioning. At the same time, the rotation angle should be arbitrarily set to meet the needs of different production processes. Therefore, the utility model proposes a rotary indexing device. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a rotary indexing device. By setting proximity sensors and stop blocks that sense each other, the whole device can quickly locate the origin during use, thereby ensuring precise rotation of the angle in the later stage, improving the processing accuracy of workpieces. On the basis of the rotation mechanism, a fast clamping component is added, enabling it to quickly position and fix the workpieces to be processed, and using the internal central axis to enable the workpieces to rotate synchronously with the stop block driving the central axis during rotation, improving the stability of the workpieces during rotation.

[0005] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a rotary indexing device, including a bottom plate, a rotation mechanism is bolted to the bottom of the bottom plate, a transmission component is bolted to the top of the bottom plate, a clamping component is fixedly connected to the top of the transmission component, and the clamping component and the transmission component rotate coaxially;

[0006] Among them, the clamping component includes a central axis with a spring clip threadedly connected to the top. The central axis sequentially penetrates through the centers of the transmission component and the bottom plate from top to bottom, and the bottom end face extends into the interior of the rotation mechanism.

[0007] The present utility model is further configured as follows: The rotating mechanism includes connecting plates symmetrically installed on both sides of the bottom of the base plate. The bottom of the two connecting plates is bolted with a motor flange, and the bottom of the motor flange is bolted with a driving motor. The driving shaft of the driving motor penetrates through the motor flange, and the end face is fixedly connected with a coupling. The end face of the coupling is fixedly connected with a transition shaft. A stop block is embedded on the outer wall of the transition shaft and is locked and fixed by screws, and is simultaneously engaged with the bottom end face of the central shaft. The top of the transition shaft is bolted to the transmission component. A sensor flange is bolted to the side wall of one of the connecting plates near the top position, and a proximity sensor is bolted to the side of the sensor flange close to the stop block.

[0008] Through the above technical solution, when the driving motor is started, its driving shaft rotates to drive the coupling on the end face to rotate, thereby driving the connected transition shaft to rotate. Finally, the transmission component is driven by the transition shaft, and the proximity sensor can make the driving motor in the origin position when starting.

[0009] The present utility model is further configured as follows: The transmission component includes a hollow shaft. A bushing A is sleeved on the outer wall of the hollow shaft near the bottom position. Deep groove ball bearings are interference-fitted at both ends of the outer wall of the hollow shaft near the bushing A. The outer walls of the two deep groove ball bearings are interference-fitted with a bearing seat A. A bushing B and a clamping block are sleeved on the outer wall of the hollow shaft near the bottom position. The outer wall of the hollow shaft is bolted to the clamping component through a flat key bolted at the top position.

[0010] Through the above technical solution, it is convenient for the rotating mechanism to drive the hollow shaft to rotate through the clamping block. It can stably rotate inside the bearing seat A through the two external deep groove ball bearings, and further drive the workpiece clamped and fixed at the top to rotate through the flat key.

[0011] The present utility model is further configured as follows: A bearing end cover A sleeved on the outside of the hollow shaft is bolted to the top of the bearing seat A. The top of the bushing B is in close contact with the bottom of the deep groove ball bearing near the bottom position. The hollow shaft is bolted to the top of the transition shaft through the locking clamping block.

[0012] Through the above technical solution, it is convenient to use the bearing end cover A to protect the internal structure of the bearing seat A, and the bushing B can be used to limit and fix the position of the installed deep groove ball bearing to prevent deviation. At the same time, the clamping block can facilitate the rotation of the hollow shaft driven by the rotating mechanism.

[0013] The present utility model is further configured as follows: The clamping assembly further includes a sleeve sleeved on the outer wall of the spring clip. A bushing is bolted to the bottom of the sleeve. An axial contact ball bearing is connected to the outer wall of the bushing by interference fit, and is disposed near the top position of the inner hole of the axial contact ball bearing. The bushing is connected to a flat key by a keyway inside and is simultaneously sleeved on the outer wall of the hollow shaft. The outer wall of the axial contact ball bearing is connected to a bearing housing B by interference fit near the bottom position. An installation plate is embedded in the bottom of the bearing housing B. The installation plate is bolted to a cylinder and a guide shaft respectively by two groups of symmetric convex blocks provided on the outer wall.

[0014] Through the above technical solution, when the cylinder is started, its driving rod drives the installation plate at the end face to rise, and under the action of the two guide shafts, the installation plate rises stably. Thus, under the action of the bearing housing B, the axial contact ball bearing, and the bushing, the sleeve at the top squeezes the spring clip inside, so that the workpiece placed inside can be clamped and fixed, and the spring clip can be stably clamped under the fixing action of the central shaft, preventing deviation and shaking.

[0015] The present utility model is further configured as follows: A bearing end cover B is bolted to the top of the bearing housing B, and the inner wall of the bearing end cover B is smoothly fitted with the outer wall of the bushing.

[0016] Through the above technical solution, it is convenient to use the bearing end cover B to protect the internal parts and does not prevent the rotation of the bushing.

[0017] The present utility model is further configured as follows: The two cylinders are both bolted to the positions near the front and rear walls at the bottom of the bottom plate. The two guide shafts both penetrate through the bottom plate and a linear bearing fixed to the top of the bottom plate is sleeved on the outer wall.

[0018] Through the above technical solution, it is convenient to install and fix the positions of the two cylinders and the guide shafts, and under the action of the cylinders, the guide shafts move smoothly and stably inside the linear bearings.

[0019] The beneficial effects of the present utility model are as follows:

[0020] 1. A rotary indexing device proposed by the present utility model can quickly position the origin during use by setting a proximity sensor and a stop block for relative induction, so as to ensure accurate rotation of the angle in the later stage and improve the machining accuracy of the workpiece.

[0021] 2. A rotary indexing device proposed by the present utility model can quickly position and fix the workpiece to be processed by adding a fast clamping assembly on the basis of the rotating mechanism, and the central shaft inside can make the workpiece rotate synchronously with the stop block driving the central shaft during rotation, improving the stability of the workpiece during rotation. Description of the Drawings

[0022] Figure 1 This is the structural diagram of a rotary indexing device of the present utility model;

[0023] Figure 2 This is the front view of a rotary indexing device of the present utility model;

[0024] Figure 3 This is the exploded view of a rotary indexing device of the present utility model.

[0025] In the figure: 100, base plate;

[0026] 200, rotary mechanism; 201, connecting plate; 202, motor flange; 203, drive motor; 204, coupling; 205, intermediate shaft; 206, stop block; 207, sensor flange; 208, proximity sensor;

[0027] 300, transmission assembly; 301, hollow shaft; 302, bushing A; 303, deep groove ball bearing; 304, bearing housing A; 304a, bearing end cover A; 305, bushing B; 306, clamping block; 307, flat key;

[0028] 400, clamping assembly; 401, central shaft; 402, spring collet; 403, sleeve; 404, shaft sleeve; 405, thrust ball bearing; 406, bearing housing B; 406a, bearing end cover B; 407, mounting plate; 408, cylinder; 409, guide shaft; 409a, linear bearing. Detailed Embodiment

[0029] The following elaborates on the preferred embodiments of the present utility model in conjunction with the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0030] As Figures 1 - 3As shown in the figure, a rotary indexing device includes a bottom plate 100. A rotary mechanism 200 is bolted to the bottom of the bottom plate 100. The rotary mechanism 200 includes connecting plates 201 symmetrically installed on both sides of the bottom of the bottom plate 100. A motor flange 202 is bolted to the bottom of the two connecting plates 201. A driving motor 203 is bolted to the bottom of the motor flange 202. The driving shaft of the driving motor 203 penetrates through the motor flange 202, and a coupling 204 is fixedly connected to the end face. A transition shaft 205 is fixedly connected to the end face of the coupling 204. A stop block 206 is embedded in the outer wall of the transition shaft 205 and is locked and fixed by screws. At the same time, it is snap-connected to the bottom end face of the central shaft 401. The top of the transition shaft 205 is bolted to the transmission assembly 300. A sensor flange 207 is bolted to the side wall of one of the connecting plates 201 near the top. A proximity sensor 208 is bolted to the side of the sensor flange 207 close to the stop block 206. When the driving motor 203 is started, its driving shaft rotates to drive the coupling 204 on the end face to rotate, thereby driving the connected transition shaft 205 to rotate. Finally, the transmission of the transmission assembly 300 is driven by the transition shaft 205, and the proximity sensor 208 can make the driving motor 203 in the origin position when starting;

[0031] A transmission assembly 300 is bolted to the top of the bottom plate 100. The transmission assembly 300 includes a hollow shaft 301. A bushing A 302 is sleeved on the outer wall of the hollow shaft 301 near the bottom. Deep groove ball bearings 303 are interference-fitted at both ends of the outer wall of the hollow shaft 301 near the bushing A 302. The outer walls of the two deep groove ball bearings 303 are interference-fitted with a bearing housing A 304. A bearing end cover A 304a sleeved on the outside of the hollow shaft 301 is bolted to the top of the bearing housing A 304. The top of the bushing B 305 is in contact with the bottom of the deep groove ball bearing 303 near the bottom. The hollow shaft 301 is bolted to the top of the transition shaft 205 through a clamping block 306 connected by locking, which is convenient for using the bearing end cover A 304a to protect the internal structure of the bearing housing A 304. And using the bushing B 305 can limit and fix the position of the installed deep groove ball bearing 303 to prevent deviation. At the same time, through the clamping block 306, it is convenient for the rotary mechanism 200 to drive the rotation of the hollow shaft 301. A bushing B 305 and a clamping block 306 are sleeved on the outer wall of the hollow shaft 301 near the bottom. The outer wall of the hollow shaft 301 is bolted to the clamping assembly 400 through a flat key 307 bolted near the top, which is convenient for the rotary mechanism 200 to drive the hollow shaft 301 to rotate through the clamping block 306. It can rotate stably inside the bearing housing A 304 through the two external deep groove ball bearings 303, and further drive the workpiece clamped and fixed at the top to rotate through the flat key 307;

[0032] The top of the transmission assembly 300 is fixedly connected with a clamping assembly 400, and the clamping assembly 400 and the transmission assembly 300 rotate coaxially. Among them, the clamping assembly 400 includes a central shaft 401 with a spring clip 402 threadedly connected to the top. The central shaft 401 sequentially penetrates through the center of the transmission assembly 300 and the bottom plate 100 from top to bottom, and the bottom end face extends into the interior of the rotating mechanism 200. The clamping assembly 400 further includes a sleeve 403 sleeved on the outer wall of the spring clip 402. A bushing 404 is bolted to the bottom of the sleeve 403. An interference fit is provided between the outer wall of the bushing 404 and a thrust ball bearing 405, and it is located near the top position of the inner hole of the thrust ball bearing 405. The bushing 404 is connected to a flat key 307 through a keyway inside, and at the same time is sleeved on the outer wall of the hollow shaft 301. An interference fit is provided between the outer wall of the thrust ball bearing 405 near the bottom position and a bearing housing B406. A bearing end cover B406a is bolted to the top of the bearing housing B406, and the inner wall of the bearing end cover B406a is smoothly fitted with the outer wall of the bushing 404, which is convenient for using the bearing end cover B406a to protect the internal parts and does not prevent the rotation of the bushing 404. The bottom of the bearing housing B406 is embedded with a mounting plate 407. The mounting plate 407 is bolted to a cylinder 408 and a guide shaft 409 respectively through two groups of symmetric bumps provided on the outer wall. When the cylinder 408 is started, its driving rod drives the mounting plate 407 at the end face to rise, and under the action of the two guide shafts 409, the mounting plate 407 rises stably. Thus, under the action of the bearing housing B406, the thrust ball bearing 405, and the bushing 404, the sleeve 403 at the top squeezes the internal spring clip 402, so that the workpiece placed inside can be clamped and fixed. And under the fixing action of the central shaft 401, the spring clip 402 can be stably clamped to prevent deviation and shaking. Both cylinders 408 are bolted to the bottom of the bottom plate 100 near the front and rear walls. Both guide shafts 409 penetrate through the bottom plate 100 and a linear bearing 409a fixed to the top of the bottom plate 100 is sleeved on the outer wall, which is convenient for installing and fixing the positions of the two cylinders 408 and the guide shafts 409, and under the action of the cylinder 408, the guide shaft 409 moves smoothly and stably inside the linear bearing 409a.

[0033] When the utility model is in use, when it is powered on, the drive motor 203 drives the shaft to rotate, driving the coupling 204 at the end face to rotate, thereby driving the connected transition shaft 205 to rotate, and further causing the embedded stop block 206 to rotate. When the proximity sensor 208 senses it, the origin can be determined. At this time, the drive motor 203 stops rotating, and this position is used as the zero point of angle measurement. Then, the shaft end of the workpiece is inserted into the collet 402. The air cylinder 408 is started, and its driving rod drives the mounting plate 407 at the end face to rise. Under the action of the two guide shafts 409, the mounting plate 407 rises stably. Thus, under the action of the bearing block B406, the thrust ball bearing 405, and the bushing 404, the sleeve 403 at the top moves upward to squeeze the collet 402 inside, so as to clamp and fix the workpiece placed inside. And under the fixing action of the central shaft 401, the collet 402 can be stably clamped to prevent deviation and shaking. Then, the drive motor 203 can be started, and any-angle rotational machining can be realized through the mutual cooperation of the internal hollow shaft 301 and the central shaft 401.

[0034] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A rotary indexing device, comprising a base plate (100), characterized in that: The bottom of the base plate (100) is bolted to a rotating mechanism (200), the top of the base plate (100) is bolted to a transmission assembly (300), the top of the transmission assembly (300) is fixedly connected to a clamping assembly (400), and the clamping assembly (400) and the transmission assembly (300) rotate coaxially; The clamping assembly (400) comprises a central shaft (401) having a spring clamp (402) threadedly connected to the top, the central shaft (401) passing through the center of the transmission assembly (300) and the base plate (100) from top to bottom, and the bottom end surface extends to the interior of the rotating mechanism (200).

2. A rotary indexing device according to claim 1, characterized in that: The rotating mechanism (200) comprises connecting plates (201) symmetrically mounted on both sides of the bottom of the base plate (100); the bottoms of the two connecting plates (201) are bolted to motor flanges (202); the bottoms of the motor flanges (202) are bolted to a driving motor (203); the driving shaft of the driving motor (203) passes through the motor flanges (202) and is fixedly connected to a coupling (204) at its end face; the end face of the coupling (204) is fixedly connected to a transition shaft (205); a stop block (206) is embedded in the outer wall of the transition shaft (205) and is fixed by screws and is snap-fitted to the bottom end face of the central shaft (401); the top of the transition shaft (205) is bolted to the transmission assembly (300); a sensor flange (207) is bolted to the side wall of one of the connecting plates (201) near the top; a proximity sensor (208) is bolted to the side of the sensor flange (207) near the stop block (206).

3. A rotary indexing device according to claim 2, characterized in that: The transmission assembly (300) comprises a hollow shaft (301), a bushing A (302) is sleeved on the outer wall of the hollow shaft (301) near the bottom, deep groove ball bearings (303) are interference-connected at both ends of the outer wall of the hollow shaft (301) near the bushing A (302), bearing seats A (304) are interference-connected on the outer walls of the two deep groove ball bearings (303), a bushing B (305) and a clamping block (306) are sleeved on the outer wall of the hollow shaft (301) near the bottom, and the outer wall of the hollow shaft (301) is bolted to the clamping assembly (400) via a flat key (307) bolted near the top.

4. A rotary indexing device according to claim 3, characterized in that: The top of the bearing seat A (304) is bolted to a bearing end cover A (304a) sleeved on the outside of the hollow shaft (301); the top of the bushing B (305) is fitted with the bottom of the deep groove ball bearing (303) near the bottom; and the hollow shaft (301) is bolted to the top of the transition shaft (205) via a clamping block (306) that is locked.

5. A rotary indexing device according to claim 3, characterized in that: The clamping assembly (400) further comprises a sleeve (403) sleeved on the outer wall of the spring clamp (402); the bottom of the sleeve (403) is bolted to a shaft sleeve (404); the outer wall of the shaft sleeve (404) is interference-connected with a thrust ball bearing (405), and the shaft sleeve (405) is arranged near the top of the inner hole of the thrust ball bearing (405); the shaft sleeve (404) is engaged with a flat key (307) through an internal keyway, and is sleeved on the outer wall of the hollow shaft (301); the outer wall of the thrust ball bearing (405) is interference-connected with a bearing seat B (406) near the bottom; the bottom of the bearing seat B (406) is embedded with a mounting plate (407); the mounting plate (407) is bolted to a cylinder (408) and a guide shaft (409) through two groups of symmetrical protrusions provided on the outer wall.

6. A rotary indexing device according to claim 5, characterized in that: The top bolt of the bearing seat B (406) is connected to a bearing end cover B (406a), and the inner wall of the bearing end cover B (406a) is smoothly fitted with the outer wall of the shaft sleeve (404).

7. A rotary indexing device according to claim 5, characterized in that: The two cylinders (408) are bolted to the bottom of the base plate (100) near the front and rear walls, and the two guide shafts (409) penetrate the base plate (100) and have outer walls sleeved with linear bearings (409a) fixed to the top of the base plate (100).

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