Centering tool

Abstract

The utility model discloses a centering tool which comprises two baffles, a U-shaped plate is fixedly connected between the two baffles, a telescopic rod is fixedly connected in the U-shaped plate, one end, far away from the U-shaped plate, of the telescopic rod is fixedly connected with a push plate, the push plate is connected with the two baffles in a sliding mode, residual gears are arranged on the left side and the right side of the push plate respectively, and the left side and the right side of the push plate are connected with the left side and the right side of the push plate respectively. The push plate is provided with tooth grooves meshed with the two residual gears, the two residual gears are fixedly connected with rear arms, the ends, away from the residual gears, of the rear arms are rotationally connected with front arms, the front arms and the rear arms are adjusted through an adjusting mechanism, and the ends, away from the rear arms, of the front arms are rotationally connected with clamping plates. According to the automatic centering clamping device, the workpiece can be automatically clamped in a centering mode, the machining precision and the machining speed of the workpiece are improved, the machining efficiency of the workpiece is high, adjustment can be conducted according to the size of the workpiece, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a centering tooling. Background Technique

[0002] CNC lathes are one of the most widely used CNC machine tools. They are mainly used for the cutting of the inner and outer cylindrical surfaces of shaft parts or disc parts, the inner and outer conical surfaces of any cone angle, the complex rotating inner and outer curved surfaces, and the cylindrical and conical threads, etc., and can perform grooving, drilling, reaming, boring and other operations. When machining the cross slide, it is necessary to clamp and fix it.

[0003] At present, the centering devices on the market all use manual centering and then use clamping tooling to fix and clamp them. Such devices are much slower in machining symmetrical workpieces, and manual centering has certain errors, reducing the machining accuracy of the workpieces.

[0004] Therefore, we propose a centering tooling to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a centering tooling to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A centering tooling includes two baffle plates. A U-shaped plate is fixedly connected between the two baffle plates. A telescopic rod is fixedly connected inside the U-shaped plate. One end of the telescopic rod away from the U-shaped plate is fixedly connected with a push plate. The push plate is slidably connected with both baffle plates. Remnant gears are arranged on both the left and right sides of the push plate. Tooth grooves meshing with the two remnant gears are arranged on the push plate. Rear arms are fixedly connected to both the two remnant gears. One end of the rear arm away from the remnant gear is rotatably connected with a front arm. The front arm and the rear arm are adjusted by an adjusting mechanism. One end of the front arm away from the rear arm is rotatably connected with a clamping plate.

[0008] Further, the adjusting mechanism includes two inclined plates. Through holes are arranged on both the two inclined plates. A bidirectional threaded rod penetrates through between the two through holes. Threaded sleeves are threadedly sleeved outside the bidirectional threaded rod. The threaded sleeves are rotatably connected with the inner side walls of the through holes. Rotating handles are fixedly connected to both ends of the bidirectional threaded rod. Two limit nuts are threadedly sleeved on the parts of the bidirectional threaded rod on both sides of the inclined plates.

[0009] Further, threaded holes matching the bidirectional threaded rod are arranged inside the two threaded sleeves on the same bidirectional threaded rod. The threads in the two threaded holes have opposite helix directions.

[0010] Further, the residual gear includes a disc and a plurality of teeth. The plurality of teeth are evenly distributed at the 3 / 4 position of the disc, and the rear arm is fixedly connected to the position of the disc where no teeth are provided.

[0011] Further, the two residual gears are arranged axially symmetrically about the central axis of the push plate.

[0012] Further, a plurality of limiting rods are fixedly penetrated between the two baffles, and the U-shaped plate is provided with limiting holes matching the limiting rods.

[0013] Further, the clamping plate and the front arm are rotatably connected by a damping rotating shaft.

[0014] Compared with the prior art, the beneficial effects of the present utility model are at least as follows:

[0015] 1. By providing a push plate and residual gears, the push plate is driven to move by a telescopic rod. The push plate drives the two residual gears to rotate relatively. The two residual gears drive the two rear arms to rotate relatively. The two rear arms drive the two clamping plates to move relatively through the two front arms, so that the workpiece can be automatically centered and clamped. When centering and fixing a symmetric workpiece, the accuracy is relatively high, the machining accuracy of the workpiece is improved, and the machining speed of the workpiece is increased, and the machining efficiency of the workpiece is relatively high;

[0016] 2. By providing an adjusting mechanism, by synchronously rotating the turning handles on the two bidirectional threaded rods, the bidirectional threaded rods drive the two inclined plates to rotate relatively. The inclined plates drive the front arms to rotate until the appropriate position, so that the centering tooling can be adjusted, and thus adjusted according to the size of the workpiece, and the applicable range is relatively wide.

[0017] The present utility model can automatically center and clamp the workpiece, improve the machining accuracy and machining speed of the workpiece, have relatively high machining efficiency for the workpiece, and can be adjusted according to the size of the workpiece, and the applicable range is relatively wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front structural schematic diagram of the present utility model;

[0019] Figure 2 is a front structural perspective view of the present utility model;

[0020] Figure 3 is a structural schematic diagram of the adjusting mechanism in the present utility model;

[0021] Figure 4 is a structural perspective view of the adjusting mechanism in the present utility model.

[0022] As shown in the figure: 1. Baffle; 2. U-shaped plate; 3. Telescopic rod; 4. Push plate; 5. Remnant gear; 6. Tooth groove; 7. Rear arm; 8. Front arm; 9. Adjusting mechanism; 10. Clamping plate; 11. Inclined plate; 12. Through hole; 13. Bidirectional threaded rod; 14. Threaded sleeve; 15. Rotating handle; 16. Limit nut; 17. Disc; 18. Tooth; 19. Limit rod. Specific embodiments

[0023] The following will describe the present invention in detail in conjunction with the specific embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, methodical, or functional changes made by those of ordinary skill in the art based on these embodiments are included within the protection scope of the present invention.

[0024] Please refer to Figures 1 to 4 , a centering tooling, including two baffles 1, a U-shaped plate 2 is fixedly connected between the two baffles 1. It is worth mentioning that a plurality of limit rods 19 are fixedly penetrated between the two baffles 1. The U-shaped plate 2 is provided with limit holes matching the limit rods 19. An extension rod 3 is fixedly connected inside the U-shaped plate 2. One end of the extension rod 3 far from the U-shaped plate 2 is fixedly connected with a push plate 4. The push plate 4 is slidably connected to both baffles 1. Remnant gears 5 are provided on both the left and right sides of the push plate 4.

[0025] In this embodiment, the remnant gear 5 includes a disc 17 and a plurality of teeth 18. The plurality of teeth 18 are evenly distributed at the 3 / 4 position of the disc 17. The rear arm 7 is fixedly connected to the position of the disc 17 where no teeth 18 are provided. The push plate 4 is provided with tooth grooves 6 meshing with the two remnant gears 5. Rear arms 7 are fixedly connected to both of the two remnant gears 5. One end of the rear arm 7 far from the remnant gear 5 is rotatably connected to a front arm 8. The front arm 8 and the rear arm 7 are adjusted by an adjusting mechanism 9. Specifically, the adjusting mechanism 9 includes two inclined plates 11. Through holes 12 are provided on both of the two inclined plates 11. A bidirectional threaded rod 13 penetrates between the two through holes 12.

[0026] In this embodiment, threaded sleeves 14 are threadedly sleeved outside the bidirectional threaded rod 13. It should be noted that threaded holes matching the bidirectional threaded rod 13 are provided inside the two threaded sleeves 14 located outside the same bidirectional threaded rod 13. The threads in the two threaded holes have opposite helix directions. The threaded sleeve 14 is rotatably connected to the inner side wall of the through hole 12. Rotating handles 15 are fixedly connected to both ends of the bidirectional threaded rod 13. Two limit nuts 16 are threadedly sleeved on the parts of the bidirectional threaded rod 13 on both sides of the inclined plate 11. It should be noted that the limit nuts 16 are used to securely fix the bidirectional threaded rod 13 to prevent the bidirectional threaded rod 13 from rotating. One end of the front arm 8 far from the rear arm 7 is rotatably connected to a clamping plate 10. It should be noted that the clamping plate 10 and the front arm 8 are rotatably connected through a damping rotating shaft. It should be noted that the two remnant gears 5 are axially symmetrically arranged with respect to the central axis of the push plate 4.

[0027] In this embodiment, by synchronously rotating the turning handles 15 located on the two bidirectional threaded rods 13, the bidirectional threaded rods 13 drive the two inclined plates 11 to rotate relative to each other. The inclined plates 11 drive the front arms 8 to rotate until in a suitable position, and then by screwing multiple limit nuts 16 to be in contact with and tightly press against the inclined plates. At this time, the push rod 3 drives the push plate 4 to move, the push plate 4 drives the two incomplete gears 5 to rotate relative to each other, the two incomplete gears 5 drive the two rear arms 7 to rotate relative to each other, and the two rear arms 7 drive the two clamping plates 10 to move relative to each other through the two front arms 8, so as to automatically center and clamp the workpiece.

[0028] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation manners understandable by those skilled in the art.

[0029] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation manners of the present invention, and they are not used to limit the protection scope of the present invention. Any equivalent implementation manners or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A centering tooling, comprising two baffles (1), characterized in that: A U-shaped plate (2) is fixedly connected between the two baffles (1). A telescopic rod (3) is fixedly connected inside the U-shaped plate (2). One end of the telescopic rod (3) far away from the U-shaped plate (2) is fixedly connected with a push plate (4). The push plate (4) is slidably connected with both baffles (1). Remnant gears (5) are arranged on both the left and right sides of the push plate (4). Tooth grooves (6) meshing with the two remnant gears (5) are arranged on the push plate (4). Rear arms (7) are fixedly connected to both the remnant gears (5). One end of the rear arm (7) far away from the remnant gear (5) is rotatably connected with a front arm (8). The front arm (8) and the rear arm (7) are adjusted by an adjusting mechanism (9). One end of the front arm (8) far away from the rear arm (7) is rotatably connected with a clamping plate (10).

2. The centering tooling according to claim 1, characterized in that: The adjusting mechanism (9) includes two inclined plates (11). Through holes (12) are arranged on both the two inclined plates (11). A bidirectional threaded rod (13) penetrates between the two through holes (12). Threaded sleeves (14) are threadedly sleeved outside the bidirectional threaded rod (13). The threaded sleeves (14) are rotatably connected with the inner side walls of the through holes (12). Rotating handles (15) are fixedly connected to both ends of the bidirectional threaded rod (13). Two limit nuts (16) are threadedly sleeved on the parts of the bidirectional threaded rod (13) on both sides of the inclined plates (11).

3. The centering tooling according to claim 2, characterized in that: Threaded holes matching the bidirectional threaded rod (13) are arranged inside the two threaded sleeves (14) on the same bidirectional threaded rod (13). The thread directions in the two threaded holes are opposite.

4. A centering tooling according to claim 1, characterized in that: The remnant gear (5) includes a disc (17) and a plurality of teeth (18). The plurality of teeth (18) are evenly distributed at the 3 / 4 position of the disc (17). The rear arm (7) is fixedly connected to the position of the disc (17) where no teeth (18) are provided.

5. A centering tooling according to claim 4, characterized in that: The two remnant gears (5) are symmetrically arranged about the central axis of the push plate (4).

6. The centering tooling according to claim 1, wherein: A plurality of limit rods (19) are fixedly penetrated between the two baffles (1). Limit holes matching the limit rods (19) are arranged on the U-shaped plate (2).

7. A centering tooling according to claim 1, characterized in that: The clamping plate (10) and the front arm (8) are rotatably connected through a damping rotating shaft.

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