Automatic positioning device for machining

Abstract

The utility model relates to mechanical processing technical field, and disclose a kind of automatic positioning device for machining, including, positioning table, for supporting clamping assembly, the bottom of positioning table is provided with four bracing bars, two support blocks, for supporting the cylindrical rod-shaped metal to be processed, two support blocks are stacked and fixedly welded on positioning table, two connecting plates, a plurality of the baffle are respectively arranged in the two sides of two bidirectional electric telescopic rod the automatic positioning device for machining, by putting rod-shaped metal to the top of two support blocks, rod-shaped metal contacts pad block, moving rod moves down, drives extruding plate to move down, carries out contact to pressure sensor, signal is transmitted to controller, controls bidirectional electric telescopic rod operation, drives the baffle of two sides to move, drives trapezoidal block to move, to rod-shaped metal is pressed tightly, to realize the effect of fixing rod-shaped metal, can realize the effect of automatic clamping rod-shaped metal, and can make the rod-shaped metal in central position, facilitate subsequent processing.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to an automatic positioning device for machining. Background Technology

[0002] In the field of metal bar machining (such as turning, milling, grinding, etc.), the automatic positioning and clamping of workpieces directly affects machining accuracy and production efficiency. Currently, the mainstream clamping devices are mainly divided into two categories:

[0003] Hydraulic / pneumatic chuck system: The workpiece is fixed by radial jaws, but the clamping range is limited by the chuck size;

[0004] Adaptive V-block mechanism: Employs a spring-preloaded V-shaped positioning block, which can accommodate limited diameter variations;

[0005] Existing technological defects

[0006] (1) Poor size adaptability: Traditional chucks require changing the jaws or adjusting the chuck position to handle bars of different diameters.

[0007] (2) Positioning accuracy decay: Due to mechanical backlash, the repeatability of multi-size compatible fixtures is >0.1mm;

[0008] (3) Low level of automation: Diameter switching requires manual intervention, which does not conform to the trend of intelligent manufacturing. Utility Model Content

[0009] In view of the shortcomings of the prior art, the present invention provides an automatic positioning device for machining to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, this utility model provides the following technical solution: an automatic positioning device for machining, comprising:

[0011] A positioning platform is used to support the clamping assembly, and four support rods are provided at the bottom of the positioning platform;

[0012] Two support blocks are used to support the cylindrical rod-shaped metal to be processed. The two support blocks are symmetrically fixedly welded to the positioning table.

[0013] Two connecting plates are used to connect the clamping assembly. The two connecting plates are fixedly welded to the bottom of the positioning table, and the two connecting plates are symmetrically arranged at the bottom of the positioning table.

[0014] Two bidirectional electric telescopic rods are used for driving, and the two bidirectional electric telescopic rods are respectively fixedly welded to the inside of the connecting plate;

[0015] Multiple partitions are used to connect the bidirectional electric telescopic rods, and the multiple partitions are respectively arranged on both sides of the two bidirectional electric telescopic rods;

[0016] Multiple trapezoidal blocks are used to press the rod-shaped metal. The multiple trapezoidal blocks are respectively fixed on the outside of multiple partitions and are symmetrically arranged on both sides of the geometric center of the positioning platform.

[0017] Multiple sliding plates are used to support the trapezoidal block, and the multiple sliding plates are fixedly welded to the outer wall of the positioning platform;

[0018] A movable rod and a pad are used to move the pad downwards. The movable rod is slidably connected inside the positioning platform, and the top of the movable rod is fixedly welded to the pad.

[0019] A horizontal plate is used to move the movable plate downwards, and the horizontal plate is fixedly welded to the bottom end of the movable rod;

[0020] Two springs are used to pull the horizontal plate upward, and the two springs are fixedly welded to the outside of the horizontal plate;

[0021] Two guide rods and a base plate are used to limit the position of the base plate. The two guide rods are fixedly welded to the bottom of the positioning platform, and the two guide rods are slidably connected to the inside of the base plate.

[0022] Two springs are used to drive the base plate to reset, and the two springs are fixedly welded to the bottom of the positioning platform;

[0023] A pressure sensor is used to sense the downward movement of the horizontal plate, and the pressure sensor is fixedly installed at the center position of the base plate;

[0024] A controller is used to control the operation of the bidirectional electric telescopic rod, and the controller is fixedly installed at the bottom of the positioning platform.

[0025] Preferred options also include:

[0026] A pressure plate is used to contact the pressure sensor. The pressure plate is fixedly installed below the horizontal plate and is positioned corresponding to the pressure sensor.

[0027] The pressure sensor has a range of 0-30MPa, an accuracy of ±0.05%FS, and a response time of ≤5ms.

[0028] The pressure sensor is electrically connected to the controller and is configured to execute a PID algorithm.

[0029] Preferably, the interior of the pad is arc-shaped, and the two guide rods are disposed inside the two springs.

[0030] Preferably, the positioning platform has multiple sliding holes inside, and the multiple sliding holes are arranged inside multiple partitions.

[0031] Preferably, the multiple trapezoidal blocks are slidably disposed inside the multiple sliding plates, and anti-slip grooves are provided on the side of the multiple trapezoidal blocks that are close to each other. The two support blocks are arranged in a V shape, and several grooves are provided on the inner side of the support blocks.

[0032] Compared with the prior art, the beneficial effects of this utility model are:

[0033] 1. This automatic positioning device for machining places a rod-shaped metal on top of two support blocks. The rod-shaped metal contacts the pad block, causing the moving rod to move downwards, which in turn moves the pressing plate downwards to contact the pressure sensor. At this point, the signal is transmitted to the controller, which controls the bidirectional electric telescopic rod to operate, causing the partitions on both sides to move. The partitions then move the trapezoidal block to press the rod-shaped metal, thereby fixing it in place. This device can automatically clamp the rod-shaped metal and keep it in a centered position for convenient subsequent processing.

[0034] 2. This automatic positioning device for machining, with its V-shaped support block, can be used to clamp bar-shaped metals of different sizes, such as... Figure 1 As shown, the support blocks and trapezoidal blocks are staggered, so that the smaller rod-shaped metal will not be unable to be properly compressed due to downward or opposite movement. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0036] Figure 2 This is a bottom view of the structure of this utility model;

[0037] Figure 3 This is a three-dimensional schematic diagram of the sensing structure and related structures of this utility model;

[0038] Figure 4 This is a three-dimensional schematic diagram of the pressing structure and related structures of this utility model.

[0039] In the diagram: 1. Positioning platform; 2. Support block; 3. Connecting plate; 4. Two-way electric telescopic rod; 5. Partition; 6. Trapezoidal block; 7. Slide plate; 8. Moving rod; 9. Pad block; 10. Horizontal plate; 11. Spring 1; 12. Spring 2; 13. Guide rod; 14. Base plate; 15. Pressure sensor; 16. Controller. Detailed Implementation

[0040] 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.

[0041] Example:

[0042] Please refer to Figures 1-4.

[0043] An automatic positioning device for machining includes:

[0044] Positioning platform 1 is used to support the clamping assembly. Four support rods are provided at the bottom of positioning platform 1.

[0045] Two support blocks 2 are used to support the cylindrical rod-shaped metal to be processed. The two support blocks 2 are symmetrically fixedly welded to the positioning table 1.

[0046] Two connecting plates 3 are used to connect the clamping assembly. The two connecting plates 3 are fixedly welded to the bottom of the positioning table 1, and the two connecting plates 3 are symmetrically arranged at the bottom of the positioning table 1.

[0047] Two bidirectional electric telescopic rods 4 are used for driving, and the two bidirectional electric telescopic rods 4 are respectively fixedly welded inside the connecting plate 3;

[0048] Multiple partitions 5 are used to connect the bidirectional electric telescopic rods 4, and the multiple partitions 5 are respectively set on both sides of the two bidirectional electric telescopic rods 4;

[0049] Multiple trapezoidal blocks 6 are used to press the rod-shaped metal. The multiple trapezoidal blocks 6 are fixed on the outside of multiple partitions 5 respectively, and are symmetrically arranged on both sides of the geometric center of the positioning platform 1.

[0050] Multiple sliding plates 7 are used to support the trapezoidal block 6, and the multiple sliding plates 7 are fixedly welded to the outer wall of the positioning platform 1;

[0051] The movable rod 8 and the pad 9 are used to move the pad 9 downward. The movable rod 8 is slidably connected inside the positioning platform 1, and the top of the movable rod 8 is fixedly welded with the pad 9.

[0052] The horizontal plate 10 is used to drive the moving plate to move downward. The horizontal plate 10 is fixedly welded to the bottom end of the moving rod 8.

[0053] Two springs 11 are used to stretch the horizontal plate 10 upwards, and the two springs 11 are fixedly welded to the outside of the horizontal plate 10.

[0054] Two guide rods 13 and a base plate 14 are used to limit the base plate 14. The two guide rods 13 are fixedly welded to the bottom of the positioning table 1, and the two guide rods 13 are slidably connected to the inside of the base plate 14.

[0055] Two springs 12 are used to drive the base plate 14 to reset. The two springs 12 are fixedly welded to the bottom of the positioning platform 1.

[0056] Pressure sensor 15 is used to sense the downward movement of the horizontal plate 10. Pressure sensor 15 is fixedly installed in the center of the base plate 14.

[0057] The controller 16 is used to control the operation of the bidirectional electric telescopic rod 4. The controller 16 is fixedly installed at the bottom of the positioning platform 1.

[0058] Specifically, this device is suitable for processing metal rods, steel pipes, or shafts. When processing a rod, the rod is placed above two support blocks 2. The rod will then contact the pad 9 first. The pad 9 will move downwards under the pressure of the rod, which will cause the moving rod 8 to move downwards. The moving rod 8 will then cause the pressing plate to move downwards and contact the pressure sensor 15. At this point, the signal is transmitted to the controller 16, which controls the bidirectional electric telescopic rod 4 to operate. The bidirectional electric telescopic rod 4 will cause the partitions 5 on both sides to move, and the partitions 5 will cause the trapezoidal block 6 to move, thereby pressing the rod to fix it. This device can automatically clamp the rod and keep it in a centered position for easy processing.

[0059] In the embodiment, it also includes:

[0060] A pressure plate is used to contact the pressure sensor 15. The pressure plate is fixedly installed below the horizontal plate 10 and is positioned corresponding to the pressure sensor 15.

[0061] The pressure sensor 15 has a range of 0-30MPa, an accuracy of ±0.05%FS, and a response time of ≤5ms.

[0062] Pressure sensor 15 is electrically connected to controller 16 and configured to execute PID algorithm;

[0063] Specifically, after the extrusion plate contacts the pressure sensor 15, the pressure sensor 15 transmits a signal to the controller 16. The controller 16 will control the bidirectional electric telescopic rod 4 to operate. The bidirectional electric telescopic rod 4 will drive the two side partitions 5 to move inward, drive the trapezoidal block 6 to move, and press the rod-shaped metal to achieve the effect of automatically pressing the rod-shaped metal.

[0064] In the embodiment: the inside of the pad 9 is arc-shaped, and the two guide rods 13 are arranged inside the two springs 12;

[0065] Specifically, the pad 9 has an arc-shaped interior, which can achieve a better fit and allow the pad 9 to fit against the outside of the rod-shaped metal. The guide rod 13 is set inside the spring 12, which can achieve the effect of stabilizing the downward movement of the base plate 14.

[0066] In this embodiment: the positioning platform 1 has multiple sliding holes inside, and the multiple sliding holes are arranged inside multiple partitions 5;

[0067] Specifically, the sliding hole inside the positioning platform 1 is used to provide space for the partition 5 to move, so that the partition 5 can move inside the sliding hole to achieve the effect of clamping the rod-shaped metal.

[0068] In the embodiment: multiple trapezoidal blocks 6 are slidably disposed inside multiple sliding plates 7, and anti-slip grooves are provided on the side of the multiple trapezoidal blocks 6 that are close to each other. Two support blocks 2 are arranged in a V shape, and several grooves are provided on the inner side of the support blocks 2.

[0069] Specifically, the trapezoidal block 6 is slidably positioned inside the slide plate 7, which restricts its movement direction and allows it to move to the opposite side. An anti-slip groove is provided on the side of the trapezoidal block 6 that is close to each other, allowing for better clamping of the rod-shaped metal and achieving a fixed effect. The support block 2 is V-shaped and can be used to clamp rod-shaped metal of different sizes, such as... Figure 1 As shown, the support block 2 and the trapezoidal block 6 are staggered, so that the smaller rod-shaped metal will not be unable to be properly compressed due to downward or opposite movement.

[0070] In this embodiment: the controller 16, pressure sensor 15 and bidirectional electric telescopic rod 4 are existing structures, and the control circuit can be implemented by simple programming by those skilled in the art. They are common knowledge in the art, and are only used without modification. Therefore, the control method and circuit connection will not be described in detail.

[0071] Working principle: The rod-shaped metal is placed above the two support blocks 2, and the rod-shaped metal contacts the pad block 9, which drives the moving rod 8 to move down, and drives the extrusion plate to move down, making contact with the pressure sensor 15. At this time, the signal is transmitted to the controller 16. The controller 16 controls the bidirectional electric telescopic rod 4 to operate, which drives the partitions 5 on both sides to move. The partitions 5 will drive the trapezoidal block 6 to move, thereby pressing the rod-shaped metal to achieve the effect of fixing the rod-shaped metal. It can achieve the effect of automatically clamping the rod-shaped metal and can keep the rod-shaped metal in a centered position, which is convenient for subsequent processing.

[0072] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic positioning device for machining, characterized by ,include: A positioning platform (1) is used to support the clamping assembly, and four support rods are provided at the bottom of the positioning platform (1); Two support blocks (2) are used to support the cylindrical rod-shaped metal to be processed. The two support blocks (2) are symmetrically fixed and welded to the positioning table (1). Two connecting plates (3) are used to connect the clamping assembly. The two connecting plates (3) are fixedly welded to the bottom of the positioning table (1), and the two connecting plates (3) are symmetrically arranged at the bottom of the positioning table (1). Two bidirectional electric telescopic rods (4) are used for driving, and the two bidirectional electric telescopic rods (4) are respectively fixedly welded to the inside of the connecting plate (3); Multiple partitions (5) are used to connect the bidirectional electric telescopic rods (4), and the multiple partitions (5) are respectively arranged on both sides of the two bidirectional electric telescopic rods (4); Multiple trapezoidal blocks (6) are used to press the rod-shaped metal. The multiple trapezoidal blocks (6) are respectively fixed on the outside of multiple partitions (5) and are symmetrically arranged on both sides of the geometric center of the positioning platform (1). Multiple sliding plates (7) are used to support trapezoidal blocks (6), and the multiple sliding plates (7) are fixedly welded to the outer wall of the positioning platform (1); The moving rod (8) and the pad (9) are used to drive the pad (9) to move down. The moving rod (8) is slidably connected inside the positioning table (1), and the top of the moving rod (8) is fixedly welded with the pad (9). A horizontal plate (10) is used to drive the moving plate to move downwards. The horizontal plate (10) is fixedly welded to the bottom end of the moving rod (8). Two springs (11) are used to stretch the horizontal plate (10) upward, and the two springs (11) are fixedly welded to the outside of the horizontal plate (10); Two guide rods (13) and a base plate (14) are used to limit the base plate (14). The two guide rods (13) are fixedly welded to the bottom of the positioning platform (1), and the two guide rods (13) are slidably connected to the inside of the base plate (14). Two springs (12) are used to drive the base plate (14) to reset. The two springs (12) are fixedly welded to the bottom of the positioning platform (1). A pressure sensor (15) is used to sense the downward movement of the horizontal plate (10), and the pressure sensor (15) is fixedly installed in the center of the base plate (14); A controller (16) is used to control the operation of the bidirectional electric telescopic rod (4), and the controller (16) is fixedly installed at the bottom of the positioning platform (1).

2. An automatic positioning device for machining according to claim 1, characterized in that Also includes: A pressure plate is used to touch the pressure sensor (15). The pressure plate is fixedly installed below the horizontal plate (10) and is arranged in a corresponding manner to the pressure sensor (15). The pressure sensor (15) has a range of 0-30MPa, an accuracy of ±0.05%FS, and a response time of ≤5ms. The pressure sensor (15) is electrically connected to the controller (16) and is configured to execute a PID algorithm.

3. An automatic positioning device for machining according to claim 1, characterized in that: The interior of the pad (9) is arc-shaped, and the two guide rods (13) are located inside the two springs (12).

4. An automatic positioning device for machining according to claim 1, characterized in that: The positioning platform (1) has multiple sliding holes inside, and the multiple sliding holes are arranged inside multiple partitions (5).

5. An automatic positioning device for machining according to claim 1, characterized in that: Multiple trapezoidal blocks (6) are slidably disposed inside multiple sliding plates (7). Anti-slip grooves are provided on the side of the multiple trapezoidal blocks (6) that are close to each other. Two support blocks (2) are arranged in a V shape, and several grooves are provided on the inner side of the support blocks (2).

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