A multi-station clamping fixture

Abstract

This utility model relates to the field of CNC machining equipment technology, specifically to a multi-station clamping fixture, including a base, workpiece positioning units mounted on the base, and a linkage clamping system that synchronously controls the clamping state of each positioning unit; the base has a CNC worktable connection interface in the middle; the linkage clamping system includes a main air circuit and cylinders equal to the number of stations, with a distributor installed between each cylinder and the main air circuit. This utility model overcomes the shortcomings of the prior art, enabling the processing of 12 workpieces in a single clamping operation through the positioning slots, increasing efficiency by more than 300%. By connecting an external air source to the main air circuit, the cylinders are driven to move inward to synchronously clamp the workpiece samples located inside the positioning slots, reducing manual operation time by 60%.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining equipment technology, specifically a multi-station clamping fixture. Background Technology

[0002] In the existing CNC equipment processing, the traditional clamping method is usually to clamp a single product at a time. That is, only one product can be installed on the fixture at a time, and then the CNC equipment processes that single product. After processing, the processed product needs to be removed and the next product to be processed needs to be clamped, and so on.

[0003] This method of clamping and processing individual products sequentially has obvious efficiency problems. Since only one product can be processed at a time, most of the CNC equipment's running time is spent on clamping and unclamping the product, resulting in a reduced proportion of the equipment's actual processing time. The overall production efficiency is extremely low, which cannot meet the needs of large-scale production and increases production and time costs.

[0004] To address the problems existing in the aforementioned technologies, a multi-station clamping fixture is proposed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, this utility model provides a multi-station clamping fixture, which overcomes the shortcomings of the prior art and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-station clamping fixture, comprising a base, 12 workpiece positioning units disposed on the base, and a linkage clamping system for synchronously controlling the clamping state of each positioning unit;

[0007] The base is provided with a CNC workbench connection interface in the middle.

[0008] The linkage clamping system includes a main air circuit and cylinders with an equal number of working positions. Each cylinder is connected to the main air circuit by a distributor.

[0009] The base can be connected to the CNC worktable via a connection interface. The 12 independent positioning areas evenly distributed on the base can clamp 12 workpiece samples at a time. By connecting an external air source through the main air circuit, the cylinder is driven to move inward to synchronously clamp the workpiece samples located inside the positioning slot.

[0010] As a preferred technical solution of this utility model, the workpiece positioning unit includes a positioning groove, the inner wall of the positioning groove is provided with a semi-circular positioning surface, and the workpiece sample that matches it is placed inside the positioning groove.

[0011] As a preferred technical solution of this utility model, the cylinder is a pneumatic clamping cylinder, which is supplied with air in parallel through the main air circuit.

[0012] As a preferred technical solution of this utility model, the base is a rectangular steel plate structure with an array of weight-reducing holes and a clamping groove on its surface.

[0013] As a preferred embodiment of this utility model, the workpiece positioning units are distributed in a 6×2 matrix, and the unit spacing is 1.5 times the workpiece size.

[0014] As a preferred technical solution of this utility model, the base edge is provided with a reference positioning surface, and the parallelism between the plane and the X-axis of the CNC machine tool is ≤0.01mm.

[0015] As a preferred technical solution of this utility model, a check valve is configured on the main air line to block the air pressure output when any station is not clamped.

[0016] As a preferred embodiment of this utility model, a pressure regulating valve is installed at the beginning of the main air passage, and a pressure relief valve is installed at the end of the main air passage.

[0017] As a preferred embodiment of this utility model, a clamping hole is provided below the positioning groove.

[0018] As a preferred embodiment of this utility model, the piston rod end of the cylinder is provided with a pressure head, and the contact surface of the pressure head is embedded with a polyurethane buffer pad.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] The positioning slot allows for the processing of up to 12 workpieces at a time, increasing efficiency by over 300%. By connecting an external air source to the main air circuit, the cylinder is driven to move inward to simultaneously clamp the workpiece samples located inside the positioning slot, reducing manual operation time by 60%. Attached Figure Description

[0021] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0022] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ;

[0023] Figure 3 This is a front view schematic diagram of the present utility model;

[0024] Figure 4 For the present utility model Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0025] Figure 5 For the present utility model Figure 3 Schematic diagram of the cross-sectional structure at point BB;

[0026] Figure 6 This is a three-dimensional schematic diagram of the workpiece sample of this utility model.

[0027] In the diagram: 1. Base; 101. Connection interface; 2. Positioning groove; 201. Semi-circular positioning surface; 3. Weight reduction hole array; 4. Clamping groove; 5. Main air passage; 6. Pressure regulating valve; 7. Flow divider; 8. Cylinder; 9. Pressure head; 10. Clamping hole; 11. Pressure relief valve; 12. Workpiece sample; 13. Reference positioning surface; 14. Check valve. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-6 A multi-station clamping fixture includes a base 1, 12 workpiece positioning units disposed on the base 1, and a linkage clamping system that synchronously controls the clamping state of each positioning unit.

[0030] The base 1 has a CNC worktable connection interface 101 in the middle;

[0031] The linkage clamping system includes a main air passage 5 and cylinders 8 with an equal number of working positions. Each cylinder 8 is connected to the main air passage 5 by a distributor 7.

[0032] The base 1 can be connected to the CNC worktable through the connection interface 101. The 12 independent positioning areas evenly distributed on the base 1 can clamp 12 workpiece samples 12 at a time. Through the main air passage 5, the external air source drives the cylinder 8 to move inward and synchronously clamp the workpiece sample 12 located inside the positioning groove 2.

[0033] Specifically, the workpiece positioning unit includes a positioning groove 2, the inner wall of which is provided with a semi-circular positioning surface 201, and the workpiece sample 12 adapted to it is provided inside the positioning groove 2. The positioning groove 2 can be adapted to the workpiece sample 12 to be processed, and the semi-circular positioning surface 201 can prevent the workpiece sample 12 from being placed in the wrong direction.

[0034] Specifically, cylinder 8 is a pneumatic clamping cylinder, which is supplied with air in parallel through the main air passage 5. The main air passage 5 can be connected to an external air source, and the gas drives cylinder 8 to clamp the workpiece sample 12 inside the positioning groove 2.

[0035] Specifically, the base 1 is a rectangular steel plate structure with a weight reduction hole array 3 and a clamping groove 4 on its surface. The weight reduction hole array 3 and the clamping groove 4 can reduce the weight of the base 1 itself, and at the same time, they can be used to clamp the workpiece sample 12 inside the positioning groove 2.

[0036] Specifically, the workpiece positioning units are distributed in a 6×2 matrix, with the unit spacing being 1.5 times the workpiece size.

[0037] Specifically, the base 1 has a reference positioning surface 13 on its edge, and the parallelism between this surface and the X-axis of the CNC machine tool is ≤0.01mm.

[0038] Specifically, a check valve 14 is installed on the main air circuit 5 to block the air pressure output when any station is not clamped.

[0039] Specifically, a pressure regulating valve 6 is installed at the beginning of the main air passage 5, and a pressure relief valve 11 is installed at the end of the main air passage 5.

[0040] Specifically, a clamping hole 10 is provided below the positioning groove 2.

[0041] Specifically, the piston rod end of cylinder 8 is provided with a pressure head 9, and the contact surface of pressure head 9 is embedded with a polyurethane buffer pad.

[0042] Working principle: The main air passage 5 passes through the external power output device, and enters the cylinder 8 in sequence through the pressure regulating valve 6, check valve 14 and flow divider 7. The cylinder 8 is driven to move outward, releasing the clamping of the positioning groove 2. The workpiece sample 12 can be placed inside the positioning groove 2. Reverse air passage causes the piston rod to retract. The retraction drives the pressure head 9 to apply clamping force to the positioning groove 2, thereby completing the synchronous clamping operation of the workpiece sample 12 inside the positioning groove 2.

[0043] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] The above description is merely 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. A multi-station clamping fixture, characterized by, It includes a base (1), 12 workpiece positioning units on the base (1), and a linkage clamping system that synchronously controls the clamping state of each positioning unit; The base (1) is provided with a CNC workbench connection interface (101) in the middle. The linkage clamping system includes a main air passage (5) and a number of cylinders (8) equal to the number of work positions. A distributor (7) is installed between each cylinder (8) and the main air passage (5).

2. The multi-station clamping fixture of claim 1, wherein: The workpiece positioning unit includes a positioning groove (2), the inner wall of the positioning groove (2) is provided with a semi-circular positioning surface (201), and the inside of the positioning groove (2) is provided with a workpiece sample (12) that is compatible with it.

3. The multi-station clamping fixture of claim 1, wherein: The cylinder (8) is a pneumatic clamping cylinder, which is supplied with air in parallel through the main air passage (5).

4. A multi-station clamping fixture according to claim 1, characterized in that: The base (1) is a rectangular steel plate structure with a weight reduction hole array (3) and a clamping groove (4) on its surface.

5. A multi-station clamping fixture according to claim 1, characterized in that: The workpiece positioning units are arranged in a 6×2 matrix, with the unit spacing being 1.5 times the workpiece size.

6. A multi-station clamping fixture according to claim 1 or 4, characterized in that: The base (1) has a reference positioning surface (13) on its edge, and the parallelism between the plane and the X-axis of the CNC machine tool is ≤0.01mm.

7. A multi-station clamping fixture according to claim 1, characterized in that: A check valve (14) is installed on the main air passage (5) to block the air pressure output when any station is not clamped.

8. A multi-station clamping fixture according to claim 1, characterized in that: The main air passage (5) is equipped with a pressure regulating valve (6) at the beginning and a pressure relief valve (11) at the end.

9. A multi-station clamping fixture according to claim 2, characterized in that: The positioning groove (2) is provided with a clamping hole (10) below it.

10. A multi-station clamping fixture according to claim 1, characterized in that: The piston rod end of the cylinder (8) is provided with a pressure head (9), and the contact surface of the pressure head (9) is fitted with a polyurethane buffer pad.

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