Zero-point positioning machining tool based on daughter board and mother board structure

Abstract

The utility model relates to the technical field of machining, in particular to a zero-point positioning machining tool based on a mother-son board structure, which comprises a square box, a plurality of mother boards are fixedly mounted on the outer wall of the square box through screws and mother board positioning pins, and an air pressure locking mechanism is mounted at the lower end of each mother board. A plurality of reference seats are fixedly mounted at the outer end of each mother board, positioning hole systems are formed in the outer ends of the reference seats, daughter boards are arranged at the outer ends of the reference seats, parts are mounted on the daughter boards, the daughter boards are mounted at the outer ends of the mother boards, and under the condition that each part is provided with one daughter board, multi-variety, multi-standard, multi-product and multi-standard production can be realized under the condition that the mother boards are not changed. By means of rapid machining with few clamps, alignment time and tool setting time before machining are omitted, and by means of simultaneous machining of multiple parts, the utilization rate of equipment is increased, the labor intensity of workers is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a zero-point positioning machining fixture based on a mother-daughter plate structure. Background Technology

[0002] Traditional machining tooling suffers from low positioning repeatability and long changeover times. While existing zero-point positioning systems can improve repeatability, they have the following drawbacks:

[0003] 1. The carrying capacity of a single positioning module is limited;

[0004] 2. Lacks modular expansion capabilities;

[0005] 3. Complex workpieces require repeated positioning. Therefore, this invention proposes a zero-point positioning machining fixture based on a mother-daughter plate structure to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a zero-point positioning machining fixture based on a mother-daughter plate structure to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a zero-point positioning machining fixture based on a mother-daughter plate structure, comprising a square box, wherein a plurality of mother plates are fixedly installed on the outer wall of the square box by screws and mother plate positioning pins, a pneumatic locking mechanism is installed at the lower end of each mother plate, and a plurality of reference seats are fixedly installed at the outer end of each mother plate, wherein a positioning hole system is opened at the outer end of the reference seat, and a daughter plate is provided at the outer end of the reference seat, wherein a high-precision tapered pin is fixedly installed at one end of the daughter plate, and the high-precision tapered pin can be inserted into the positioning hole system and fixed by the pneumatic locking mechanism.

[0008] Preferably, it also includes a connecting cylinder fixed on the worktable of the CNC machining equipment, and the square box is fixed to the upper end of the connecting cylinder by mounting components.

[0009] Preferably, the mounting component includes a cylinder and a connecting block. The cylinder is fixedly mounted on the lower end of the square box. Two limiting holes are symmetrically opened at one end of the cylinder, and a threaded hole is provided between the two limiting holes.

[0010] Preferably, the docking blocks are provided in two pieces and symmetrically fixed to the upper end of the connecting cylinder, the lower end of the square box is provided with docking grooves corresponding to the docking blocks, and one end of the connecting cylinder is provided with a groove.

[0011] Preferably, a circular hole 1 is provided on both the left and right sides of the inner end of the groove, and a circular hole 2 is provided between the two circular holes 1. An installation plate is provided in the groove, and two guide rods are symmetrically fixedly installed on one end of the installation plate. A fixing bolt is provided between the two guide rods. One end of the fixing bolt passes through the installation plate and the circular hole 2 and is threaded to the inner wall of the threaded hole. At the same time, one end of the guide rod passes through the circular hole 1 and is inserted into the limiting hole.

[0012] Preferably, the plurality of reference seats and positioning holes are arranged at equal intervals.

[0013] Preferably, the outer end of the sub-plate is fitted with parts by screws and pins.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention fixes the mother plate to the outer end of the square box, and installs parts on the sub-plates. By installing the sub-plates on the outer end of the mother plate, and using a sub-plate for each part, it achieves rapid processing of multiple varieties with fewer fixtures without changing the mother plate. It eliminates the alignment time and tool setting time before processing. By processing multiple parts simultaneously, it improves the equipment's uptime, reduces the labor intensity of workers, and increases production efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0017] Figure 2 This is a three-dimensional structural schematic diagram of Embodiment 2 of the present invention;

[0018] Figure 3 This is a schematic diagram of the unfolded square box and connecting cylinder of this utility model;

[0019] Figure 4 This is a bottom view of the square box of this utility model;

[0020] Figure 5 This is a perspective view of the mother plate of this utility model.

[0021] In the diagram: 1. Square box; 2. Connecting cylinder; 3. Groove; 4. Hole 1; 5. Hole 2; 6. Connecting block; 7. Cylinder; 8. Limiting hole; 9. Threaded hole; 10. Mounting plate; 11. Guide rod; 12. Fixing bolt; 13. Mother plate; 14. Reference seat; 15. Positioning hole system; 16. Mother plate positioning pin; 17. Daughter plate; 18. High-precision tapered pin; 19. Part; 20. Pneumatic locking mechanism; 21. Connecting groove; 22. Air passage. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figures 1 to 5 This utility model provides a technical solution: a zero-point positioning machining fixture based on a mother-daughter plate structure, including a square box 1. The inner end of the square box 1 is hollow and the interior has a cross groove structure, which reduces the weight of the square box 1 while ensuring the structural stability of the square box 1. Several mother plates 13 are fixedly installed on the outer wall of the square box 1 by screws and mother plate positioning pins 16, forming a fixed machine tool coordinate system, which can be understood as a unique zero-point coordinate, for the machining programming operator to call repeatedly, so as to realize rapid programming machining work.

[0024] In another embodiment of the present invention, a connecting cylinder 2 is further included, which is fixed on the worktable of the CNC machining equipment, and the square box 1 is fixed to the upper end of the connecting cylinder 2 by a mounting component.

[0025] Each mother plate 13 is equipped with a pneumatic locking mechanism 20 at its lower end. Several reference seats 14 are fixedly installed at the outer end of each mother plate 13. The reference seats 14 are standard parts, and their outer ends are provided with a positioning hole system 15. The reference seats 14 and the positioning hole system 15 are equidistantly arranged. A daughter plate 17 is provided at the outer end of each reference seat 14. A high-precision tapered pin 18 is fixedly installed at one end of the daughter plate 17. The high-precision tapered pin 18 can be inserted into the positioning hole system 15 and fixed by the pneumatic locking mechanism 200. To achieve the universality of the mother plate 13, the positioning hole system 15 is designed with a universal spacing mechanism, allowing daughter plates 17 with the same spacing mechanism to be... The sub-plate 17 is quickly installed on the mother plate 13 and positioned on the mother plate 13 by a high-precision tapered pin 18, achieving a positioning accuracy of 0.005mm. It is fixed by a pneumatic locking mechanism 20, enabling quick clamping and disassembly during installation. The right air passage 22 inside the mother plate 13 is connected to an air source and the pneumatic locking mechanism enables the pneumatic mechanism in the zero-point reference seat 14 to achieve self-locking. If disassembly is required after normal operation, the above actions are repeated. Air is introduced at the pneumatic locking mechanism 200 to open the pneumatic mechanism in the zero-point reference seat 14, allowing the sub-plate 17 to be replaced, thus enabling quick replacement of the sub-plate 17 and part 19.

[0026] Part 19 is mounted on the outer end of subplate 17 by screws and pins. Part 19 is mounted on subplate 17. Subplate 17 is designed with suitable mating positions and connecting devices for the part 19 to be processed. Part 19 is quickly locked onto subplate 17 by screws and pins, realizing rapid processing. By using one subplate 17 for each part 19, rapid processing of multiple varieties and fewer fixtures can be achieved without changing the mother plate 13. The alignment time and tool setting time before processing are eliminated. By processing multiple parts 19 at the same time, the uptime of the equipment is improved, the labor intensity of workers is reduced, and the production efficiency is increased by 40%.

[0027] The mounting components include a cylinder 7 and a connecting block 6. The cylinder 7 is fixedly installed at the lower end of the square box 1. Two limiting holes 8 are symmetrically opened at one end of the cylinder 7, and a threaded hole 9 is provided between the two limiting holes 8. A groove 3 is opened at one end of the connecting cylinder 2. A first round hole 4 is opened on both the left and right sides of the inner end of the groove 3. A second round hole 5 is provided between the two first round holes 4. Two connecting blocks 6 are provided and symmetrically fixed at the upper end of the connecting cylinder 2. A connecting groove 21 corresponding to the connecting block 6 is opened at the lower end of the square box 1. The cylinder 7 at the lower end of the square box 1 is inserted into the connecting cylinder 2. At the same time, when the connecting block 6 is inserted into the connecting groove 21, the first round hole 4 and the limiting hole 8 are connected, and the second round hole 5 and the threaded hole 9 are connected.

[0028] An installation plate 10 is provided in the groove 3. Two guide rods 11 are symmetrically fixed at one end of the installation plate 10. A fixing bolt 12 is provided between the two guide rods 11. When the installation plate 10 is inserted into the groove 3, one end of the guide rod 11 passes through the first round hole 4 and is inserted into the limiting hole 8. One end of the fixing bolt 12 passes through the installation plate 10 and the second round hole 5 and is threaded to the inner wall of the threaded hole 9, thus fixing the square box 1 and facilitating the disassembly and assembly of the square box 1.

[0029] When this device is in operation, the mother plate 13 is fixed to the outer end of the square box 1, and the part 19 is installed on the daughter plate 17. The daughter plate 17 is installed on the outer end of the mother plate 13. By using one daughter plate 17 for each part 19, the device can achieve rapid processing of multiple varieties with fewer fixtures without changing the mother plate 13. It eliminates the alignment time and tool setting time before processing. By processing multiple parts 19 at the same time, the equipment utilization rate is improved, the labor intensity of workers is reduced, and the production efficiency is increased.

[0030] 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. A zero-point positioning machining fixture based on a mother-daughter plate structure, characterized in that: The box includes a square box (1). Several mother plates (13) are fixedly installed on the outer wall of the square box (1) by screws and mother plate positioning pins (16). Each mother plate (13) is equipped with a pneumatic locking mechanism (20) at the lower end. Several reference seats (14) are fixedly installed on the outer end of each mother plate (13). The outer end of the reference seat (14) is provided with a positioning hole system (15). The outer end of the reference seat (14) is provided with a daughter plate (17). One end of the daughter plate (17) is fixedly installed with a high-precision tapered pin (18). The high-precision tapered pin (18) can be inserted into the positioning hole system (15) and fixed by the pneumatic locking mechanism (20).

2. The zero-point positioning machining fixture based on a mother-daughter plate structure according to claim 1, characterized in that: It also includes a connecting cylinder (2) fixed on the worktable of the CNC machining equipment, and the square box (1) is fixed to the upper end of the connecting cylinder (2) by the mounting components.

3. The zero-point positioning machining fixture based on a mother-daughter plate structure according to claim 2, characterized in that: The mounting components include a cylinder (7) and a docking block (6). The cylinder (7) is fixedly installed at the lower end of the square box (1). Two limiting holes (8) are symmetrically opened at one end of the cylinder (7), and a threaded hole (9) is provided between the two limiting holes (8).

4. The zero-point positioning machining fixture based on a mother-daughter plate structure according to claim 3, characterized in that: The docking block (6) has two pieces and is symmetrically fixed at the upper end of the connecting cylinder (2). The lower end of the square box (1) is provided with a docking groove (21) corresponding to the docking block (6), and one end of the connecting cylinder (2) is provided with a groove (3).

5. The zero-point positioning machining fixture based on a mother-daughter plate structure according to claim 4, characterized in that: The inner end of the groove (3) is provided with two circular holes (4) on the left and right sides. A circular hole (5) is provided between the two circular holes (4). An installation plate (10) is provided in the groove (3). Two guide rods (11) are symmetrically fixedly installed on one end of the installation plate (10). A fixing bolt (12) is provided between the two guide rods (11). One end of the fixing bolt (12) passes through the installation plate (10) and the circular hole (5) and is threaded to the inner wall of the threaded hole (9). At the same time, one end of the guide rod (11) passes through the circular hole (4) and is inserted into the limiting hole (8).

6. A zero-point positioning machining fixture based on a mother-daughter plate structure according to any one of claims 1-5, characterized in that: Several reference seats (14) and positioning hole systems (15) are equidistantly arranged.

7. A zero-point positioning machining fixture based on a mother-daughter plate structure according to any one of claims 1-5, characterized in that: The outer end of the sub-plate (17) is fitted with a part (19) by screws and pins.

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