Automatic indexing rotating structure of machining center clamp

Abstract

The utility model relates to the technical field of automatic indexing rotation, and discloses a machining center clamp automatic indexing rotation structure which comprises a bottom plate and an operation table, a plurality of clamping fixing assemblies are arranged on the side face of the bottom plate, a shell is fixedly connected to the side face of the bottom plate, and a rotating assembly is arranged on the inner side of the shell. A scale guiding assembly is arranged on the side face of the shell, two clamping assemblies are arranged on the inner side of the operation table, one clamping assembly is arranged at the top of the operation table, and the other clamping assembly is arranged at the bottom of the operation table; the rotating assembly comprises a worm gear, and the worm gear is rotationally connected to the inner side of the shell. According to the utility model, the worm gear can accurately rotate at a low rotating speed through the meshing transmission of the worm and the worm gear and the characteristic of large reduction ratio, and the angle indication of the pointer block on the outer side of the fixed circular plate on the scale wheel is matched, so that high-precision indexing can be realized, the angle error is small, and the harsh requirement of precision machining on angle positioning can be met.

Description

Technical Field

[0001] This utility model relates to the field of automatic indexing and rotation technology, and in particular to an automatic indexing and rotation structure for a machining center fixture. Background Technology

[0002] The automatic indexing and rotating structure of a machining center fixture is a key functional component used in machining centers. It is mainly used to realize the automatic indexing and continuous rotation of workpieces during the machining process to meet the needs of multi-faceted and multi-process machining of complex parts.

[0003] Currently, indexing rotary structures are typically operated manually, which eliminates the need for complex power drive and electronic control systems. For small processing plants or laboratory equipment, manually adjustable indexing devices can meet basic indexing requirements while significantly reducing manufacturing costs. The indexing angle can be monitored in real-time by directly observing the position of the dial and pointer, allowing operators to fine-tune the angle based on experience and actual processing conditions.

[0004] Although manual adjustment is intuitive and controllable, the indexing accuracy of the manual indexing device largely depends on the operator's experience and skill level. Different operators, due to differences in factors such as the amount of force applied and reading habits, will result in significant variations in the indexing results. Therefore, an automatic indexing rotary structure for machining center fixtures is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an automatic indexing rotation structure for machining center fixtures, which aims to improve the problem of the inability to reduce angular errors in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automatic indexing and rotating structure for a machining center fixture includes a base plate and an operating table. The base plate has multiple snap-fit ​​fixing components on its side. A housing is fixedly connected to the side of the base plate. A rotating component is provided inside the housing. A scale guide component is provided on the side of the housing. Two clamping components are provided inside the operating table. One clamping component is located at the top of the operating table, and the other clamping component is located at the bottom of the operating table.

[0008] The rotating assembly includes a worm gear, which is rotatably connected to the inner side of the housing. A worm is rotatably connected to the inner side of the housing, and the worm is meshed with the side of the worm gear. The end of the worm is connected to an external device.

[0009] As a further description of the above technical solution:

[0010] The scale guide assembly includes a fixed circular plate, which is rotatably connected to the side of the housing and fixedly connected to the side of the worm gear. Multiple pointer blocks are fixedly connected to the outside of the fixed circular plate.

[0011] As a further description of the above technical solution:

[0012] The scale guide assembly also includes a scale wheel, which is fixedly connected to the side of the housing, and the plurality of pointer blocks are rotatably connected to the outside of the scale wheel;

[0013] As a further description of the above technical solution:

[0014] The clamping assembly includes a gear, which is rotatably connected to the inner side of the operating table. Two toothed rods are slidably connected to the inner side of the operating table, and the two toothed rods are slidably connected to both sides of the gear.

[0015] As a further description of the above technical solution:

[0016] The clamping assembly further includes two sliding blocks, which are fixedly connected to the ends of the two toothed rods respectively, and the ends of the two sliding blocks are slidably connected to the outside of the other two toothed rods respectively.

[0017] As a further description of the above technical solution:

[0018] The clamping assembly also includes two connecting blocks, which are respectively fixedly connected to the sides of the two sliding blocks. Both connecting blocks are slidably connected to the inner side of the operating table, and both connecting blocks are fixedly connected to the outer side of the two connecting blocks. Anti-slip blocks are provided on the sides of both fixing blocks.

[0019] As a further description of the above technical solution:

[0020] The snap-fit ​​fixing assembly includes a snap-fit ​​block, which is fixedly connected to the side of the base plate. A snap-fit ​​block is provided inside the snap-fit ​​block, and a fixing bolt is provided inside the end of the snap-fit ​​block.

[0021] As a further description of the above technical solution:

[0022] The operating platform is fixedly connected to the side of the fixed circular plate, and a drive motor is fixedly connected to the inner side of the operating platform. A connecting rod is fixedly connected between the two gears, and one of the gears is fixedly connected to the output end of the drive motor.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the meshing transmission of the worm and the worm wheel, with its large reduction ratio, enables the worm wheel to rotate precisely at a low speed. Combined with the angle indication of the pointer block on the outer side of the fixed circular plate on the scale wheel, high-precision indexing can be achieved with small angle error, which can meet the stringent requirements of precision machining for angle positioning.

[0025] 2. In this utility model, the drive motor drives the gear to rotate, causing the toothed rod to slide synchronously in opposite directions. Through the sliding block and connecting block, the fixed block and anti-slip block are pushed to clamp the workpiece synchronously from the top and bottom of the operating table in both directions, which enhances the clamping stability and can effectively prevent the workpiece from shifting or loosening during processing. It is suitable for workpieces of various shapes and weights, and the clamping force is uniform, reducing the risk of workpiece deformation. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of an automatic indexing and rotating structure for a machining center fixture proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the base plate of an automatic indexing and rotating structure for a machining center fixture proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the scale wheel of an automatic indexing rotary structure for a machining center fixture proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the operating table of the automatic indexing and rotating structure of the machining center fixture proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the connecting rod of an automatic indexing and rotating structure for a machining center fixture proposed in this utility model.

[0031] Legend:

[0032] 1. Base plate; 2. Snap-fit ​​block; 3. Snap-slot block; 4. Housing; 5. Worm gear; 6. Scale wheel; 7. Pointer block; 8. Operating table; 9. Connecting block; 10. Fixing block; 11. Anti-slip block; 12. Fixing bolt; 13. Worm gear; 14. Sliding groove block; 15. Fixing circular plate; 16. Drive motor; 17. Tooth block rod; 18. Gear; 19. Connecting rod. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1 , Figure 2 and Figure 3 The present invention provides an embodiment of an automatic indexing and rotating structure for a machining center fixture, comprising a base plate 1 and an operating table 8. The base plate 1 has multiple snap-fit ​​fixing components on its side, and a housing 4 is fixedly connected to the side of the base plate 1. A rotating component is provided inside the housing 4, and a scale guide component is provided on the side of the housing 4. Two clamping components are provided inside the operating table 8, one clamping component being located at the top of the operating table 8 and the other clamping component being located at the bottom of the operating table 8.

[0035] The rotating assembly includes a worm gear 13, which is rotatably connected to the inner side of the housing 4. A worm 5 is rotatably connected to the inner side of the housing 4, meshing with the side of the worm gear 13. The end of the worm 5 is connected to an external device. The external device drives the worm 5 to rotate around its own axis, and the worm 5 drives the worm gear 13 to rotate within the housing 4 through tooth meshing. The rotational motion of the worm 5 is converted into the circular motion of the worm gear 13. Utilizing the large reduction ratio characteristic of the transmission between the worm gear 13 and the worm 5, low-speed, high-torque output is achieved.

[0036] Reference Figure 1 , Figure 2 and Figure 3 The scale guide assembly includes a fixed circular plate 15, which is rotatably connected to the side of the housing 4 and fixedly connected to the side of the worm gear 13. Multiple pointer blocks 7 are fixedly connected to the outer side of the fixed circular plate 15. When the worm gear 13 rotates, the fixed circular plate 15 rotates synchronously around the axis of the housing 4. The scale guide assembly also includes a scale wheel 6, which is fixedly connected to the side of the housing 4. Multiple pointer blocks 7 are rotatably connected to the outside of the scale wheel 6. The pointer blocks 7 on the outer side of the fixed circular plate 15 rotate synchronously with the fixed circular plate 15, while the scale wheel 6 remains stationary, fixed to the housing 4. The tips of the pointer blocks 7 slide along the outer circumference of the scale wheel 6, creating a relative movement between the dynamic pointer and the static scale.

[0037] Reference Figure 2 , Figure 4 and Figure 5The clamping assembly includes a gear 18, which is rotatably connected to the inner side of the operating table 8. Two toothed rods 17 are slidably connected to the inner side of the operating table 8, and the two toothed rods 17 are slidably connected to both sides of the gear 18. When the motor starts, it directly drives the gear 18 to rotate. If the gear 18 rotates clockwise, the left toothed rod 17 slides to the left under the meshing force of the gear, and the right toothed rod 17 slides to the right, achieving a reverse separation motion. If the gear 18 rotates counterclockwise, the left toothed rod 17 slides to the right, and the right toothed rod 17 slides to the left, achieving a closing motion. The clamping assembly also includes two sliding blocks 14, which are fixedly connected to the ends of the two toothed rods 17, and the ends of the two sliding blocks 14 are slidably connected to the outer sides of the other two toothed rods 17. The sliding connection structure of the slide block 14 provides lateral guidance for the toothed rod 17, limiting its offset perpendicular to the sliding direction and ensuring that the toothed rod 17 can only slide linearly along the inner side of the operating table 8, avoiding jamming or skew due to uneven force. The clamping assembly also includes two connecting blocks 9, which are fixedly connected to the sides of the two slide blocks 14 respectively. Both connecting blocks 9 are slidably connected to the inner side of the operating table 8, and fixed blocks 10 are fixedly connected to the outer sides of both connecting blocks 9. Anti-slip blocks 11 are provided on the sides of both fixed blocks 10. When the toothed rods 17 slide towards each other, the fixed blocks 10 move towards the center with the connecting blocks 9, contacting the workpiece through the anti-slip blocks 11 and clamping the workpiece using friction. When the toothed rods 17 slide in the opposite direction, the fixed blocks 10 move outward and release the workpiece. The operating platform 8 is fixedly connected to the side of the fixed circular plate 15. A drive motor 16 is fixedly connected to the inside of the operating platform 8. A connecting rod 19 is fixedly connected between two gears 18, and one of the gears 18 is fixedly connected to the output end of the drive motor 16. The two gears 18 are fixedly connected through the connecting rod 19, forming a coaxial transmission. Therefore, when one gear 18 rotates, the other gear 18 will rotate synchronously in the same direction and at the same speed.

[0038] Reference Figure 1 and Figure 2 The snap-fit ​​fixing assembly includes a snap-fit ​​block 3, which is fixedly connected to the side of the base plate 1. A snap-fit ​​block 2 is provided inside the snap-fit ​​block 3, and a fixing bolt 12 is provided on the inner side of the end of the snap-fit ​​block 2. The snap-fit ​​block 3 on the side of the base plate 1 and the snap-fit ​​block 2 on the machine tool worktable achieve initial positioning through sliding nesting. The fixing bolt 12 is screwed into the threaded hole at the end of the snap-fit ​​block 2 from the outside of the base plate 1, and the overall equipment is firmly fixed by tightening the bolt 12.

[0039] Working principle: First, the external device drives the worm gear 5 to rotate. Due to the meshing of the worm gear 5 and the worm wheel 13, and the large reduction ratio of the worm gear, the worm wheel 5 rotates slowly, driving the operating table 8 fixed on it to rotate. The worm wheel 5 is connected to the operating table 8 through the fixed circular plate 15. The pointer block 7 on the fixed circular plate 15 indicates the angle on the scale wheel 6 as it rotates, realizing automatic angle calibration.

[0040] The drive motor 16 drives the gear 18 to rotate. The toothed rods 17 on both sides of the gear 18 slide in opposite directions due to meshing. The sliding block 14 at the end of the toothed rod 17 slides with the adjacent toothed rod. Through the connecting block 9, the fixing block 10 and the anti-slip block 11 are pushed to simultaneously clamp the workpiece from the top and bottom of the operating table 8. The connecting rod 19 connects the upper and lower sets of gears 18 to ensure synchronous drive and enhance stability.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic indexing and rotating structure for a machining center fixture, comprising a base plate (1) and an operating table (8), characterized in that: The base plate (1) is provided with multiple snap-fit ​​fixing components on its side. The base plate (1) is fixedly connected to the side of the housing (4). The housing (4) is provided with a rotating component inside its side. The housing (4) is provided with a scale guide component on its side. The operating table (8) is provided with two clamping components inside its side. One clamping component is located at the top of the operating table (8), and the other clamping component is located at the bottom of the operating table (8). The rotating assembly includes a worm gear (13) which is rotatably connected to the inner side of the housing (4). A worm (5) is rotatably connected to the inner side of the housing (4). The worm (5) is meshed with the side of the worm gear (13). The end of the worm (5) is connected to an external device.

2. The automatic indexing and rotating structure for a machining center fixture according to claim 1, characterized in that: The scale guide assembly includes a fixed circular plate (15), which is rotatably connected to the side of the housing (4) and fixedly connected to the side of the worm gear (13). Multiple pointer blocks (7) are fixedly connected to the outside of the fixed circular plate (15).

3. The automatic indexing and rotating structure for a machining center fixture according to claim 2, characterized in that: The scale guide assembly also includes a scale wheel (6), which is fixedly connected to the side of the housing (4), and a plurality of pointer blocks (7) are rotatably connected to the outside of the scale wheel (6).

4. The automatic indexing and rotating structure for a machining center fixture according to claim 2, characterized in that: The clamping assembly includes a gear (18) which is rotatably connected to the inner side of the operating table (8). Two toothed rods (17) are slidably connected to the inner side of the operating table (8), and the two toothed rods (17) are slidably connected to both sides of the gear (18).

5. The automatic indexing and rotating structure for a machining center fixture according to claim 4, characterized in that: The clamping assembly also includes two sliding blocks (14), which are fixedly connected to the ends of the two toothed rods (17) respectively, and the ends of the two sliding blocks (14) are slidably connected to the outside of the other two toothed rods (17).

6. The automatic indexing rotation structure for a machining center fixture according to claim 5, characterized in that: The clamping assembly also includes two connecting blocks (9), which are fixedly connected to the sides of the two sliding blocks (14) respectively. Both connecting blocks (9) are slidably connected to the inner side of the operating table (8). Both connecting blocks (9) are fixedly connected to the outer side of the two connecting blocks (9). Both fixed blocks (10) are provided with anti-slip blocks (11) on their sides.

7. The automatic indexing and rotating structure for a machining center fixture according to claim 1, characterized in that: The snap-fit ​​fixing assembly includes a snap-fit ​​block (3), which is fixedly connected to the side of the base plate (1). A snap-fit ​​block (2) is provided inside the snap-fit ​​block (3), and a fixing bolt (12) is provided inside the end of the snap-fit ​​block (2).

8. The automatic indexing and rotating structure for a machining center fixture according to claim 4, characterized in that: The operating table (8) is fixedly connected to the side of the fixed circular plate (15). A drive motor (16) is fixedly connected to the inside of the operating table (8). A connecting rod (19) is fixedly connected between the two gears (18). One of the gears (18) is fixedly connected to the output end of the drive motor (16).

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