A quick indexing mechanism

Abstract

The application relates to the technical field of automatic production line indexing, in particular to a rapid indexing mechanism, which comprises a bottom plate, a fixing base and a workbench, the fixing base is provided with an eighth screw and is installed on the bottom plate through the eighth screw, a bearing mounting hole is arranged on the fixing base, two tapered roller bearings are arranged on the inner wall, a bearing end cover is installed on the fixing base, and the workbench is arranged above the bottom plate. The application can realize indexing, bolt insertion and locking functions, all the driving devices of the parts are air cylinders, the power source is compressed air, sensors are arranged on all the actions, signal feedback can be realized, the automatic requirement of the whole rapid indexing mechanism is realized, the rapid indexing mechanism has the characteristics of simple structure, low price, fast response speed, high indexing precision, strong adaptability, good stability, high automation degree and the like, and can be widely applied to automatic production lines.

Description

Technical Field

[0001] This invention relates to the field of indexing technology for automated production lines, and more particularly to a rapid indexing mechanism. Background Technology

[0002] With the rapid development of various industries and the advancement of science and technology and social progress, various industries have put forward increasingly higher requirements for automation. In particular, automatic indexing mechanisms are frequently used in automated production lines. Nowadays, many indexing mechanisms have relatively complex structures, most of which are electrically driven, resulting in relatively high overall costs and generally low indexing accuracy. Therefore, we propose a rapid indexing mechanism to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing indexing mechanisms, such as relatively complex structures, electric drive, relatively high overall cost, and generally low indexing accuracy. Therefore, this invention proposes a rapid indexing mechanism.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a rapid indexing mechanism, comprising a base plate, a fixed seat, and a worktable. The fixed seat is provided with an eighth screw and is mounted on the base plate by the eighth screw. The fixed seat is provided with bearing mounting holes, and two tapered roller bearings are provided on the inner wall. A bearing end cap is installed on the fixed seat. The worktable is located above the base plate. A positioning shaft is provided on the lower surface of the worktable. The positioning shaft mates with the inner hole of the tapered roller bearing, and a locking nut is provided at one end to lock the worktable. Fifteen pry bars are evenly arranged on the bottom surface of the worktable, and fifteen holes are evenly arranged on the bottom surface, in which positioning bushings are installed. An indexing device is provided on the surface of the base plate. A locking device is provided on the worktable. A pin device is provided on the surface of the base plate.

[0005] Preferably, the locking device includes an expansion sleeve disposed in the worktable, the expansion sleeve having a conical hole, a wedge fitting into the conical hole of the expansion sleeve, a connecting block at the top of the wedge, a third screw disposed in the connecting block and mounted on the top of the wedge by the third screw, a locking cylinder disposed on the surface of the base plate, a sixteenth screw disposed on the locking cylinder and mounted on the base plate by the sixteenth screw, a drive screw mounted on the piston end of the locking cylinder, the end of the drive screw being connected to the connecting block, through the above components, the locking cylinder moving downward under the action of compressed air, thereby causing the drive screw to drive the wedge downward, the expansion sleeve being expanded, and the worktable being tightened, thereby ensuring the stability of the worktable when it rotates to a certain angle.

[0006] Preferably, the indexing device includes an indexing cylinder support located above the base plate. A seventh screw is disposed in the indexing cylinder support and mounted on the base plate via the seventh screw. An indexing cylinder body is disposed on one side of the indexing cylinder support. A fifteenth screw is disposed in the indexing cylinder body and mounted on the indexing cylinder support via the fifteenth screw. A guide hole is provided in the indexing cylinder support, and a guide shaft is disposed in the guide hole. A push plate is disposed at one end of the piston rod of the indexing cylinder body and the guide shaft. The push plate is disposed in relation to the seventh screw and mounted on the base plate via the fifteenth screw. Seven screws are installed on the piston rod and guide shaft of the indexing cylinder. A fifth screw is provided on the push plate, and a connecting block is installed through the fifth screw. A pin is installed inside the connecting block, and a push rod is hinged on the pin. A connecting shaft is installed on the inner wall of the push rod, and an open retaining ring is installed on the push rod. Sixth screws are provided on both sides of the push plate, and a connecting plate is installed through the sixth screw. Small holes are opened on the surface of the connecting shaft and the connecting plate, and tension springs are installed in the two small holes. A fourth screw is provided on the surface of the push plate, and an elastic lever is installed through the fourth screw.

[0007] Preferably, a ninth screw is provided on the base plate, and an adjusting bracket is installed through the ninth screw. An adjusting screw and a hexagonal nut are installed on the adjusting bracket. Through the above components, the forming of the indexing cylinder body extension can be restricted by the adjusting screw, and the adjusting screw can be controlled by the hexagonal nut on the adjusting bracket, thereby adjusting the indexing angle.

[0008] Preferably, the pin device includes an eleventh screw mounted on the base plate, through which a guide seat is installed; a fourteenth screw is disposed in the guide seat, through which a pin cylinder is installed; a thirteenth screw is disposed in the guide seat, through which a side baffle is installed; a tenth screw is disposed on the top surface of the guide seat, through which a pin guide seat is installed; a driving wedge is mounted on the piston end of the pin cylinder; a driven wedge is disposed in the guide seat; a second adapter rod is fixed on the base plate, passing through the driven wedge; a second spring is disposed between the second adapter rod and the driving wedge; and the driven... A first screw plug is installed at the top of the wedge, and a first adapter rod is installed on the surface of the first screw plug. A guide hole is provided in the pin guide seat, and a pin body is provided in the guide hole. The first adapter rod passes through the pin body, and a second screw plug is installed at one end of the pin body. A first spring is provided between the second screw plug and the first adapter rod. A set screw is provided in the guide seat body. Through the above components, the pin cylinder drives the drive wedge to move forward under the action of compressed air, thereby causing the driven wedge to move vertically upward, which in turn drives the first adapter rod to compress the first spring upward. Finally, under the action of the spring force, the first spring pushes the pin body into the positioning bushing, thereby ensuring the indexing positioning accuracy.

[0009] Preferably, the top surface of the workbench has multiple threaded holes evenly arranged to allow for the installation of other parts.

[0010] Preferably, a first screw is provided on the base plate, and a handle is installed through the first screw. Due to the light weight of the overall structure, the operator can move the device using the handle.

[0011] Preferably, a second screw is provided on the workbench, and a top baffle is installed through the second screw.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0013] This solution can realize functions such as indexing, pinning, and locking. The drive devices of each part are all cylinders, and the power source is compressed air. At the same time, each action is equipped with a sensor to provide signal feedback, thereby realizing the automation requirements of the entire rapid indexing mechanism. As a result, the rapid indexing mechanism has the characteristics of simple structure, low price, fast response speed, high indexing accuracy, strong adaptability, good stability, and high degree of automation, and can be widely used in automated production lines. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a rapid indexing mechanism proposed in this invention;

[0015] Figure 2 This is a side view of the rapid indexing mechanism proposed in this invention.

[0016] Figure 3 This is a schematic front view of a rapid indexing mechanism proposed in this invention;

[0017] Figure 4 This is a schematic diagram of the indexing device part of a rapid indexing mechanism proposed in this invention;

[0018] Figure 5 This is a schematic diagram of the pin device part of a rapid indexing mechanism proposed in this invention;

[0019] Figure 6 This is a top view of the present invention;

[0020] Figure 7 This invention proposes a rapid indexing mechanism. Figure 6 A schematic diagram of the AA cross-section;

[0021] Figure 8 This invention proposes a rapid indexing mechanism. Figure 6 BB cross-sectional diagram;

[0022] Figure 9This invention proposes a rapid indexing mechanism. Figure 6 A schematic diagram of the CC cross-section;

[0023] Figure 10 This invention proposes a rapid indexing mechanism. Figure 3 DD cross-sectional schematic diagram;

[0024] Figure 11 This invention proposes a rapid indexing mechanism. Figure 3 EE cross-sectional schematic diagram;

[0025] Figure 12 This is a schematic diagram of the indexing process of a rapid indexing mechanism proposed in this invention;

[0026] Figure 13 This is a front view of the initial indexing state of a rapid indexing mechanism proposed in this invention;

[0027] Figure 14 This is a schematic diagram of the expansion sleeve structure of a rapid indexing mechanism proposed in this invention.

[0028] Legend:

[0029] 1. Worktable; 2. Fixed seat; 3. Base plate; 4. Bearing end cover; 5. Indexing cylinder body; 6. Pulley; 7. Indexing cylinder support; 8. Push plate; 9. Guide shaft; 10. Connecting block; 11. Push rod; 12. Pin; 13. Connecting plate; 14. Connecting shaft; 15. Adjusting support; 16. Elastic pulley; 17. Adjusting screw; 18. Guide seat body; 19. Drive wedge; 20. Pin cylinder; 21. Driven wedge; 22. Pin guide seat; 23. Pin body; 24. First adapter rod; 25. First plug; 26. Second adapter rod; 27. Second plug; 28. Expansion sleeve; 29. ​​Locking cylinder; 30. Drive screw; 31. Wedge; 32. 33. Adapter block; 34. Top baffle; 35. Side baffle; 36. Tapered roller bearing; 37. Locking nut; 38. Positioning bushing; 39. Open retaining ring; 40. Tension spring; 41. Threaded hole; 42. First spring; 43. Second spring; 44. Handle; 45. First screw; 46. Second screw; 47. Third screw; 48. Fourth screw; 49. Fifth screw; 50. Sixth screw; 51. Seventh screw; 52. Eighth screw; 53. Ninth screw; 54. Tenth screw; 55. Eleventh screw; 56. Hex nut; 57. Thirteenth screw; 58. Fourteenth screw; 59. Fifteenth screw; 60. Set screw. Detailed Implementation

[0030] Please see Figures 1-14This invention provides a technical solution: a rapid indexing mechanism, including a base plate 3, a fixed seat 2, and a worktable 1. The fixed seat 2 is provided with an eighth screw 51, which is installed on the base plate 3. The fixed seat 2 is provided with bearing mounting holes, and two tapered roller bearings 35 are provided on the inner wall. A bearing end cover 4 is installed on the fixed seat 2. The worktable 1 is located above the base plate 3. A positioning shaft is provided on the lower surface of the worktable 1. The positioning shaft cooperates with the inner hole of the tapered roller bearing 35, and a locking nut 36 is provided at one end to lock the worktable 1. Fifteen pry bars 6 are evenly arranged on the bottom surface of the worktable 1, and fifteen holes are evenly arranged on the bottom surface. Positioning bushings 37 are installed in the holes. An indexing device is provided on the surface of the base plate 3. A locking device is provided on the worktable 1. A pin device is provided on the surface of the base plate 3.

[0031] Specifically, the locking device includes an expansion sleeve 28 disposed in the workbench 1, an expansion sleeve 28 having a conical hole, a wedge 31 fitting into the conical hole of the expansion sleeve 28, a transition block 32 disposed at the top of the wedge 31, a third screw 46 disposed in the transition block 32 and mounted on the top of the wedge 31 by the third screw 46, a locking cylinder 29 disposed on the surface of the base plate 3, a sixteenth screw 59 disposed on the locking cylinder 29 and mounted on the base plate 3 by the sixteenth screw 59, a drive screw 30 disposed on the piston end of the locking cylinder 29, and the end of the drive screw 30 connected to the transition block 32.

[0032] In this embodiment: the locking cylinder 29 moves downward under the action of compressed air, thereby causing the drive screw 30 to drive the wedge 31 to move downward, the expansion sleeve 28 is expanded, and the worktable 1 is tightened, thereby ensuring the stability of the worktable 1 when it rotates to a certain angle.

[0033] Specifically, the indexing device includes an indexing cylinder support 7 located above the base plate 3. A seventh screw 50 is installed in the indexing cylinder support 7 and mounted on the base plate 3 via the seventh screw 50. An indexing cylinder body 5 is located on one side of the indexing cylinder support 7. A fifteenth screw 58 is installed in the indexing cylinder body 5 and mounted on the indexing cylinder support 7 via the fifteenth screw 58. A guide hole is provided in the indexing cylinder support 7, and a guide shaft 9 is installed in the guide hole. A push plate 8 is provided at one end of the piston rod of the indexing cylinder body 5 and the guide shaft 9. The seventh screw 50 is installed on the push plate 8 and mounted on the indexing cylinder body 3 via the seventh screw 50. The piston rod of the cylinder and the guide shaft 9 are provided with a fifth screw 48 on the push plate 8, and a connecting block 10 is installed through the fifth screw 48. A pin 12 is installed inside the connecting block 10, and a push rod 11 is hinged on the pin 12. A connecting shaft 14 is installed on the inner wall of the push rod 11, and an open retaining ring 38 is installed on the push rod 11. A sixth screw 49 is provided on both sides of the push plate 8, and a connecting plate 13 is installed through the sixth screw 49. Small holes are opened on the surfaces of the connecting shaft 14 and the connecting plate 13, and tension springs 39 are installed in the two small holes. A fourth screw 47 is provided on the surface of the push plate 8, and an elastic paddle 16 is installed through the fourth screw 47.

[0034] Specifically, a ninth screw 52 is provided on the base plate 3, and an adjusting support 15 is installed through the ninth screw 52. An adjusting screw 17 and a hexagonal nut 55 are installed on the adjusting support 15.

[0035] In this embodiment: by adjusting the screw 17, the extension of the indexing cylinder body 5 can be restricted, and by controlling the adjusting screw 17 on the adjusting support 15 with the hexagonal nut 55, the indexing angle can be adjusted.

[0036] Specifically, the pin device includes an eleventh screw 54 mounted on the base plate 3, through which a guide seat 18 is installed. A fourteenth screw 57 is located within the guide seat 18, through which a pin cylinder 20 is installed. A thirteenth screw 56 is located within the guide seat 18, through which a side baffle 34 is installed. A tenth screw 53 is located on the top surface of the guide seat 18, through which a pin guide seat 22 is installed. A drive wedge 19 is installed at the piston end of the pin cylinder 20, and a driven wedge 2 is located within the guide seat 18. 1. A second adapter rod 26 is fixed on the base plate 3. The second adapter rod 26 passes through the driven wedge block 21. A second spring 42 is provided between the second adapter rod 26 and the driving wedge block 19. A first screw plug 25 is installed at the top of the driven wedge block 21. A first adapter rod 24 is installed on the surface of the first screw plug 25. A guide hole is provided in the pin guide seat 22. A pin body 23 is provided in the guide hole. The first adapter rod 24 passes through the pin body 23. A second screw plug 27 is installed at one end of the pin body 23. A first spring 41 is provided between the second screw plug and the first adapter rod 24. A set screw 60 is provided in the guide seat body 18.

[0037] In this embodiment: the pin cylinder 20 drives the drive wedge 19 to move forward under the action of compressed air, thereby causing the driven wedge 21 to move vertically upward, which in turn drives the first adapter rod 24 to compress the first spring 41 upward. Finally, the first spring 41 pushes the pin body 23 into the positioning bushing 37 under the action of the spring force, thereby ensuring the positioning accuracy of the indexing.

[0038] Specifically, multiple threaded holes 40 are evenly arranged on the top surface of the workbench 1.

[0039] In this embodiment: multiple threaded holes 40 can be used to install other parts.

[0040] Specifically, a first screw 44 is provided on the base plate 3, and a handle 43 is installed through the first screw 44.

[0041] In this embodiment: Since the overall structure is not heavy, the operator can move it using the handle 43.

[0042] Preferably, a second screw 45 is provided on the workbench 1, and a top baffle 33 is installed through the second screw 45.

[0043] Working Principle: This section describes the indexing angle as 24°. Fifteen indexing blocks 6 are evenly distributed on the bottom surface of the worktable 1, along with fifteen evenly distributed holes. Positioning bushings 37 are installed in these holes for pin-based indexing. Initially, the top of the push rod 11 contacts the rear side of the indexing block 6, and the elastic plate 16 contacts the inclined surface of the indexing block 6. The indexing cylinder 5 moves forward under the action of compressed air, causing the push rod 11 to push the indexing block 6 to rotate, thereby rotating the worktable 1. Due to inertia, to prevent the worktable 1 from continuing to move forward after reaching the specified angle, which could lead to inaccurate indexing, the elastic plate 16 is designed. During indexing, the elastic plate 16 and the push rod 11 clamp the indexing block 6, ensuring rotation to the designated angle. After the angle is reached, the automatic pin mechanism activates, and the pin body 23 enters the positioning hole of the positioning bushing 37, thus ensuring accurate indexing. The positioning accuracy is then assessed, followed by the locking mechanism to lock the entire worktable 1. The locking cylinder 29 moves downward under the action of compressed air, causing the drive screw 30 to drive the wedge 31 downward, expanding the expansion sleeve 28 and tightening the worktable 1. This ensures the stability of the worktable 1 when it rotates to a certain angle. Then, machining operations are performed. After completion, the next indexing operation is performed. First, the indexing cylinder body 5 retracts, the elastic lever 16 opens and disengages from the current lever 6, and the push rod 11 continues to retract. When the top of the push rod 11 contacts the inclined surface on the rear lever 6, the push rod 11 rotates to the right along the pin 12, thus avoiding the lever 6 and returning to the initial position. Then, the locking mechanism unlocks, the pin body 23 retracts, and indexing is performed again. The above steps are repeated to achieve automatic and rapid indexing. Each action is designed with a sensor to ensure the automation requirements of the entire mechanism.

Claims

1. A rapid indexing mechanism, comprising a base plate (3), a fixed seat (2), and a worktable (1), characterized in that: The fixed seat (2) is provided with an eighth screw (51) and is installed on the base plate (3) by the eighth screw (51). The fixed seat (2) is provided with a bearing mounting hole and two tapered roller bearings (35) are provided on the inner wall. The fixed seat (2) is provided with a bearing end cover (4). The worktable (1) is located above the base plate (3). The lower surface of the worktable (1) is provided with a positioning shaft. The positioning shaft is engaged with the inner hole of the tapered roller bearing (35) and a locking nut (36) is provided at one end to lock the worktable (1). Fifteen paddles (6) are evenly arranged on the bottom surface of the worktable (1). At the same time, fifteen holes are evenly arranged on the bottom surface. Positioning bushings (37) are installed in the holes. The surface of the base plate (3) is provided with an indexing device. The worktable (1) is provided with a locking device. The surface of the base plate (3) is provided with a pin device. The locking device includes an expansion sleeve (28) set in the workbench (1), the expansion sleeve (28) is provided with a conical hole, the expansion sleeve (28) is fitted with a wedge (31), the top of the wedge (31) is provided with a transition block (32), the transition block (32) is provided with a third screw (46), and is installed on the top of the wedge (31) by the third screw (46). The surface of the base plate (3) is provided with a locking cylinder (29), the locking cylinder (29) is provided with a sixteenth screw (59), and is installed on the base plate (3) by the sixteenth screw (59). The piston end of the locking cylinder (29) is installed with a drive screw (30), and the end of the drive screw (30) is connected to the transition block (32). The indexing device includes an indexing cylinder support (7) located above the base plate (3). A seventh screw (50) is provided in the indexing cylinder support (7) and is mounted on the base plate (3) by the seventh screw (50). An indexing cylinder body (5) is provided on one side of the indexing cylinder support (7). A fifteenth screw (58) is provided in the indexing cylinder body (5) and is mounted on the indexing cylinder support (7) by the fifteenth screw (58). A guide hole is provided in the indexing cylinder support (7), and a guide shaft (9) is provided in the guide hole. A push plate (8) is provided at one end of the piston rod of the indexing cylinder body (5) and the guide shaft (9). A seventh screw (50) is provided on the push plate (8) and is mounted on the piston rod of the indexing cylinder by the seventh screw (50). On the guide shaft (9), a fifth screw (48) is provided on the push plate (8), and a connecting block (10) is installed through the fifth screw (48). A pin (12) is installed inside the connecting block (10), and a push rod (11) is hinged on the pin (12). A connecting shaft (14) is installed on the inner wall of the push rod (11), and an open retaining ring (38) is installed on the push rod (11). A sixth screw (49) is provided on both sides of the push plate (8), and a connecting plate (13) is installed through the sixth screw (49). Small holes are opened on the surfaces of the connecting shaft (14) and the connecting plate (13), and tension springs (39) are installed in the two small holes. A fourth screw (47) is provided on the surface of the push plate (8), and an elastic paddle (16) is installed through the fourth screw (47).

2. The rapid indexing mechanism according to claim 1, characterized in that: The base plate (3) is provided with a ninth screw (52), and an adjusting support (15) is installed through the ninth screw (52). An adjusting screw (17) and a hexagonal nut (55) are installed on the adjusting support (15).

3. The rapid indexing mechanism according to claim 1, characterized in that: The pin device includes an eleventh screw (54) on the base plate (3), and a guide seat (18) is installed through the eleventh screw (54). A fourteenth screw (57) is provided in the guide seat (18), and a pin cylinder (20) is installed through the fourteenth screw (57). A thirteenth screw (56) is provided in the guide seat (18), and a side baffle (34) is installed through the thirteenth screw (56). A tenth screw (53) is provided on the top surface of the guide seat (18), and a pin guide seat (22) is installed through the tenth screw (53). A drive wedge (19) is installed on the piston end of the pin cylinder (20). A driven wedge (21) is provided in the guide seat (18). The base plate (3) A second adapter rod (26) is fixed on the drive wedge (21). The second adapter rod (26) passes through the driven wedge (21). A second spring (42) is provided between the second adapter rod (26) and the drive wedge (19). A first screw plug (25) is installed at the top of the driven wedge (21). A first adapter rod (24) is installed on the surface of the first screw plug (25). A guide hole is provided in the pin guide seat (22). A pin body (23) is provided in the guide hole. The first adapter rod (24) passes through the pin body (23). A second screw plug (27) is installed at one end of the pin body (23). A first spring (41) is provided between the second screw plug and the first adapter rod (24). A set screw (60) is provided in the guide seat body (18).

4. The rapid indexing mechanism according to claim 1, 2, or 3, characterized in that: Multiple threaded holes (40) are evenly arranged on the top surface of the workbench (1).

5. The rapid indexing mechanism according to claim 1, 2, or 3, characterized in that: A first screw (44) is provided on the base plate (3), and a handle (43) is installed by the first screw (44).

6. The rapid indexing mechanism according to claim 1, 2, or 3, characterized in that: The workbench (1) is provided with a second screw (45), and a top baffle (33) is installed by the second screw (45).

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