Positioning mechanism for numerical control machine tool

Abstract

The utility model relates to the technical field of numerical control machine tools, in particular to a positioning mechanism for a numerical control machine tool, which comprises a mounting seat, two ends of the mounting seat are fixedly connected with mounting plates through connecting plates, a clamping plate is arranged on one side of each mounting plate, and a transmission rod is arranged on the surface of each mounting plate; the rotating shaft is fixedly mounted in the middle of the mounting seat; the driving cylinder coincides with the axis of the rotating shaft and drives the driving pin to slide; the device has the beneficial effects that the mounting plates are fixedly mounted at the two ends of the mounting seat, the transmission rods are arranged on the surfaces of the mounting plates, the two transmission rods are arc-shaped, one ends of the transmission rods are rotationally connected through the driving pin, and the driving pin is movably arranged in the mounting seat and is driven by the driving air cylinder to slide; therefore, the cables can be effectively prevented from being wound on the workpiece, mutual winding among the multiple cables is prevented, and it is ensured that the device can continuously and stably clamp and position the workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled machine tools, in particular to a positioning mechanism for numerically controlled machine tools. Background Art

[0002] CNC machine tools use the same cutting tools and processing programs, the cutting paths of the cutting tools are exactly the same, the parts have good consistency and stable quality.

[0003] The Chinese utility model with publication number CN221313286U discloses a CNC machine tool positioning structure, which can rotate and exchange the positions of the two ends of the workpiece, facilitate CNC machine tool processing operations, do not require disassembly and adjustment, shorten the exchange time, improve the efficiency of CNC machine tool processing, and better meet actual production and processing needs.

[0004] At present, the workpiece is mostly clamped by a clamping plate pushed by a power device such as a cylinder. When the workpiece is turned over, the cable of the power device such as the cylinder is easy to get entangled with the workpiece, and even cause the cable to be damaged or broken during the turning process, thereby affecting the clamping and positioning effect of the workpiece. Therefore, the utility model proposes a positioning mechanism for a CNC machine tool to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a positioning mechanism for a numerically controlled machine tool to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a positioning mechanism for a CNC machine tool, the positioning mechanism for a CNC machine tool comprising:

[0007] A mounting seat, both ends of the mounting seat are fixedly connected to the mounting plate through a connecting plate, a clamping plate is arranged on one side of the mounting plate, a transmission rod is arranged on the surface of the mounting plate, the two transmission rods are symmetrically arc-shaped structures, one end of the two transmission rods is connected to each other by a driving pin, and the other ends of the two transmission rods respectively drive the two clamping plates to slide synchronously in opposite directions, and the driving pin is slidably installed inside the mounting seat;

[0008] The rotating shaft is fixedly mounted on the middle part of the mounting seat, a driving cylinder is installed inside the rotating shaft, the driving cylinder coincides with the axis of the rotating shaft and drives the driving pin to slide.

[0009] Preferably, a guide groove is provided on the surface of the mounting plate, a sliding pin is provided through the other end of the transmission rod, and one end of the sliding pin is movably inserted into the inner cavity of the guide groove and slides along the length direction thereof.

[0010] Preferably, the clamping plate is arc-shaped, and a rubber pad is adhered to the inner wall. The middle of the outer wall of the clamping plate is fixedly connected with a connecting rod, and one end of the connecting rod is movably sleeved outside the sliding pin.

[0011] Preferably, telescopic rods are installed at both ends of the mounting plate, and the movable ends of the telescopic rods are fixedly connected to the ends of the clamping plate.

[0012] Preferably, one end of the driving cylinder is fixedly connected with a driving frame. The driving frame is slidably installed inside the rotating shaft. The driving frame is in a "C" shape, and both ends of the driving frame are fixedly connected to both ends of the driving pin respectively.

[0013] Preferably, a connecting seat is rotatably installed outside one end of the rotating shaft, and the connecting seat is fixedly connected to the machine tool workbench through a vertical frame.

[0014] Preferably, a reversing worm gear is fixedly sleeved outside the middle of the rotating shaft. A worm is rotatably installed outside the connecting seat. The worm meshes with the reversing worm gear and drives the reversing worm gear to rotate.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, mounting plates are fixedly installed at both ends of the mounting seat. Transmission rods are arranged on the surfaces of the mounting plates. Both transmission rods are arc-shaped and one end is rotatably connected through a driving pin. The driving pin is movably arranged inside the mounting seat and is driven to slide by a driving cylinder. When the mounting seat of the device is reversed to drive the workpiece to be reversed, since the driving cylinder is installed inside the rotating shaft and far away from the workpiece, it can effectively avoid the winding of its cable on the workpiece, and only one driving cylinder is required as the power source for the clamping and positioning of the workpiece, thus effectively preventing the mutual winding between multiple cables and ensuring that the device can continuously and stably clamp and position the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a three-dimensional schematic diagram of the structure of the clamping plate and the transmission rod of the present utility model;

[0019] Figure 3 is a three-dimensional schematic diagram of the structure of the mounting seat of the present utility model;

[0020] Figure 4 is a semi-sectional schematic diagram of the structure of the mounting seat of the present utility model;

[0021] Figure 5 is a connection schematic diagram of the structure of the mounting seat and the connecting seat of the present utility model.

[0022] In the figure: 1. mounting seat; 2. connecting plate; 3. mounting plate; 31. guide groove; 32. telescopic rod; 4. clamping plate; 41. connecting rod; 5. transmission rod; 51. driving pin; 52. sliding pin; 6. driving frame; 7. rotating shaft; 71. driving cylinder; 8. flip worm gear; 9. connecting seat; 10. worm. DETAILED DESCRIPTION

[0023] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] For example, see Figure 1-Figure 5 The utility model provides a technical solution: a positioning mechanism for a CNC machine tool, the positioning mechanism for a CNC machine tool comprising: a mounting seat 1 and a rotating shaft 7.

[0025] Specifically, both ends of the mounting base 1 are fixedly connected with the mounting plate 3 through the connecting plate 2. Figure 1 As shown, the two mounting plates 3 are relatively symmetrically distributed, and a clamping plate 4 is arranged on one side of the mounting plate 3. The two clamping plates 4 are kept symmetrically distributed, and the two clamping plates 4 can clamp the workpiece when they slide close to each other. A transmission rod 5 is arranged on the surface of the mounting plate 3. The two transmission rods 5 are in a symmetrical arc structure, which can avoid collision between the transmission rod 5 and the clamping plates 4, thereby avoiding collision between the transmission rod 5 and the workpiece. One ends of the two transmission rods 5 are kept in rotation connection through a driving pin 51, and the other ends of the two transmission rods 5 respectively drive the two clamping plates 4 to slide synchronously in the opposite direction. The driving pin 51 is slidably installed inside the mounting seat 1. When the driving pin 51 slides, it can pull the two transmission rods 5 to move at the same time, thereby driving the two clamping plates 4 to approach each other, thereby clamping the workpiece.

[0026] Secondly, the rotating shaft 7 is fixedly installed in the middle of the mounting base 1. The rotating shaft 7 itself can rotate and can be used to flip the clamped workpiece. A driving cylinder 71 is installed inside the rotating shaft 7. The driving cylinder 71 coincides with the axis of the rotating shaft 7 and drives the driving pin 51 to slide. When the rotating shaft 7 rotates and flips the workpiece, the driving cylinder 71 serves as a power source, and its cable and the workpiece will not be entangled with each other. The cable twists within its own bearing range, thereby effectively preventing the clamping force of the clamp 4 on the workpiece from being reduced.

[0027] In order to limit the sliding trajectory of the other end of the transmission rod 5, the present application further has a guiding groove 31 formed on the surface of the mounting plate 3. The other end of the transmission rod 5 is provided with a sliding pin 52 penetrating therethrough. One end of the sliding pin 52 is movably inserted into the inner cavity of the guiding groove 31 and slides along its length direction. The setting of the guiding groove 31 is used to guide the sliding of the sliding pin 52, thereby limiting the sliding trajectory of the other end of the transmission rod 5. Therefore, when the driving pin 51 slides in a direction perpendicular to the guiding groove 31, the transmission rod 5 can move and rotate simultaneously with the sliding of the driving pin 51, and further drive the two clamping plates 4 to move synchronously and in opposite directions.

[0028] In order to drive the sliding of the clamping plate 4, the clamping plate 4 of the present application is arc-shaped and has a rubber pad adhered to its inner wall. The middle part of the outer wall of the clamping plate 4 is fixedly connected with a connecting rod 41. One end of the connecting rod 41 is movably sleeved outside the sliding pin 52. When the sliding pin 52 slides in the inner cavity of the guiding groove 31, the sliding pin 52 can drive the clamping plate 4 to move through the connecting rod 41, so as to realize the clamping or loosening of the workpiece.

[0029] In order to prevent the clamping plate 4 from tilting, the present application further has telescopic rods 32 installed at both ends of the mounting plate 3. The movable ends of the telescopic rods 32 are fixedly connected with the ends of the clamping plate 4. The telescopic rods 32 are of a known structure in the art and can expand and contract to a certain extent by themselves. The setting of the telescopic rods 32 is used to limit the sliding of the clamping plate 4 and prevent the clamping plate 4 from tilting.

[0030] In order to connect the driving pin 51 with the driving cylinder 71, the present application further has a driving frame 6 fixedly connected to one end of the driving cylinder 71. The driving frame 6 is slidably installed inside the rotating shaft 7. The driving frame 6 is in a "C" shape, and both ends of the driving frame 6 are fixedly connected with both ends of the driving pin 51 respectively. The driving frame 6 only slides inside the inner cavity of the rotating shaft 7. When the driving cylinder 71 expands and contracts, it drives the driving frame 6 to slide, and further can drive the driving pin 51 to slide.

[0031] In order to install the rotating shaft 7, the present application further has a connecting seat 9 rotatably installed outside one end of the rotating shaft 7. The connecting seat 9 is fixedly connected to the machine tool workbench through a vertical frame. The position of the connecting seat 9 itself remains fixed. The rotating shaft 7 can rotate inside the connecting seat 9, thereby flipping the workpiece, and the rotating shaft 7 will not be separated from the connecting seat 9.

[0032] In order to drive the rotating shaft 7 to rotate, the present application also has a flip worm gear 8 fixedly sleeved on the outer side of the middle part of the rotating shaft 7, and a worm 10 is rotatably installed on the outer side of the connecting seat 9. The worm 10 meshes with the flip worm gear 8 and drives the flip worm gear 8 to rotate. The worm 10 is driven to rotate by a motor, thereby driving the flip worm gear 8 to rotate, and then flipping the workpiece. The motor can be installed on the surface of the connecting seat 9, and the worm 10 is driven to rotate through the transmission of the belt and the pulley, so the cable of the motor will not get entangled.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning mechanism for a CNC machine tool, characterized in that: The positioning mechanism for the numerical control machine tool includes: A mounting base (1). Both ends of the mounting base (1) are fixedly connected with mounting plates (3) through connecting plates (2). A clamping plate (4) is arranged on one side of the mounting plate (3). A transmission rod (5) is arranged on the surface of the mounting plate (3). The two transmission rods (5) are in a symmetrical arc structure. One ends of the two transmission rods (5) are rotatably connected through a driving pin (51). The other ends of the two transmission rods (5) respectively drive the two clamping plates (4) to slide synchronously and in opposite directions. The driving pin (51) is slidably installed inside the mounting base (1); A rotating shaft (7). The rotating shaft (7) is fixedly installed in the middle of the mounting base (1). A driving cylinder (71) is installed inside the rotating shaft (7). The driving cylinder (71) coincides with the axis of the rotating shaft (7) and drives the driving pin (51) to slide.

2. A positioning mechanism for a CNC machine tool according to claim 1, characterized in that: A guiding groove (31) is formed on the surface of the mounting plate (3). The other end of the transmission rod (5) is provided with a sliding pin (52) penetrating through it. One end of the sliding pin (52) is movably inserted into the inner cavity of the guiding groove (31) and slides along its length direction.

3. A positioning mechanism for a CNC machine tool according to claim 2, characterized in that: The clamping plate (4) is arc-shaped and has a rubber pad bonded to its inner wall. The middle part of the outer wall of the clamping plate (4) is fixedly connected with a connecting rod (41). One end of the connecting rod (41) is movably sleeved outside the sliding pin (52).

4. The positioning mechanism for a CNC machine tool according to claim 1, characterized in that: Expansion rods (32) are installed at both ends of the mounting plate (3). The movable ends of the expansion rods (32) are fixedly connected with the ends of the clamping plate (4).

5. The positioning mechanism for a CNC machine tool according to claim 1, characterized in that: One end of the driving cylinder (71) is fixedly connected with a driving frame (6). The driving frame (6) is slidably installed inside the rotating shaft (7). The driving frame (6) is in a "C" shape, and both ends of the driving frame (6) are fixedly connected with both ends of the driving pin (51).

6. The positioning mechanism for a CNC machine tool according to claim 1, characterized in that: A connecting seat (9) is rotatably installed on the outer side of one end of the rotating shaft (7). The connecting seat (9) is fixedly connected with the machine tool workbench through a vertical frame.

7. A positioning mechanism for a CNC machine tool according to claim 6, characterized in that: A reversing worm gear (8) is fixedly sleeved on the outer side of the middle part of the rotating shaft (7). A worm (10) is rotatably installed on the outer side of the connecting seat (9). The worm (10) meshes with the reversing worm gear (8) and drives the reversing worm gear (8) to rotate.

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