Clamp for numerical control machining of aluminum alloy plate

Abstract

The utility model discloses a fixture for numerical control machining of aluminum alloy plates, which belongs to the field of machining and comprises two mounting plates, limiting mechanisms are symmetrically mounted on the two mounting plates, screw rods are mounted on one sides of the two mounting plates in a threaded connection manner, and threads on two sides of each screw rod face opposite directions. And one end of the lead screw penetrates through one of the mounting plates and is movably mounted to a fixing frame through bearing fit, a driving motor is mounted on the fixing frame, and the output end of the driving motor is in transmission connection with the end of the lead screw through coupling fit. Through the optimization of the structure, the technical effect that the equipment can adjust the fixed point positions on the surface of a workpiece according to different machining areas can be achieved, then the stability and the safety are kept in the machining process, and the practicability of the clamp is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a clamp for numerical control processing of aluminum alloy plates. Background Art

[0002] During the CNC machining process of aluminum alloy sheet workpieces, corresponding fixtures are required to fix them. Currently, common fixture equipment often has a relatively fixed structure, and it is difficult to adjust the surface fixed points of the sheet to be processed at any time according to specific needs.

[0003] Patent application number CN202010266187.5 discloses an automobile parts fixture, comprising an outer shell, a first plywood and a second plywood. A cavity is opened inside the outer shell, and the left side of the inner wall of the cavity is rotatably connected to the left side of the first plywood, and the right side of the inner wall of the cavity is rotatably connected to the right side of the second plywood. The automobile parts fixture connects the first plywood and the second plywood through a side plate, so that the first rotating block on one side of the first plywood rotates inside the first connecting bearing. When the fixture is in use, the automobile parts are clamped and fixed by using the first plywood, the second plywood and the two side plates. The entire fixture can be conveniently rotated inside the cavity of the outer shell, effectively improving the processing efficiency of the fixture on automobile parts, reducing the labor intensity of the operator, and conveniently performing multi-angle processing on automobile parts.

[0004] However, the following problems still exist: in the process of processing aluminum alloy workpieces, the CNC processing equipment of aluminum alloy plate workpieces often needs to be equipped with corresponding fixtures to fix the workpieces to a certain extent. In the specific processing process, it may be necessary to process different positions of the plate workpiece separately due to processing needs. As a result, the aluminum alloy plate workpiece may be subjected to forces in different areas, and the existing fixtures can only provide basic clamping and fixing effects, and it is difficult to adjust the clamping of different target areas at any time according to needs. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a clamp for CNC processing of aluminum alloy plates, which can be used to restrict and fix the aluminum alloy plate workpiece during the specific processing process, and can adjust the surface of different areas of the aluminum alloy plate workpiece accordingly according to changes in the processing position to ensure the practicality of the clamp.

[0006] The utility model is realized through the following technical solutions:

[0007] A fixture for CNC machining of aluminum alloy plates, comprising two mounting plates, symmetrically mounted with limit mechanisms on the two mounting plates, screws being threadedly mounted on the two mounting plates, with threads on both sides of the screws facing opposite directions, one end of the screw passing through one of the mounting plates and movably mounted to a fixed frame via a bearing, a drive motor being mounted on the fixed frame, and an output end of the drive motor being transmission-connected to an end of the screw via a coupling;

[0008] The bottoms of the two mounting plates are symmetrically provided with mounting grooves, and a guide rail is overlapped between the mounting grooves on the two mounting plates, and the guide rail is fixed to the mounting plates through a fixing mechanism.

[0009] Furthermore, the fixing frame is welded with a guide rod, and the guide rod is slidably plugged into the two mounting plates in sequence.

[0010] Furthermore, the limiting mechanism includes a U-shaped frame, a handle bolt, a pressure plate and a column. The U-shaped frame is fixed to the mounting plate, the U-shaped frame is screwed through the handle bolt, and the end of the handle bolt is connected to the pressure plate through a bearing.

[0011] Furthermore, columns are provided between the inner walls of the U-shaped frame, and both sides of the pressure plate are slidably plugged into the columns.

[0012] Furthermore, a gasket is laid on the inner wall of one side of the U-shaped frame, and the gasket is provided with anti-slip grooves, and the gasket is an integrated structure made of rubber material.

[0013] Furthermore, the fixing mechanism includes a hydraulic rod, a connecting plate, a fixed plate and a pad. The hydraulic rod is installed to the guide rail, and a connecting plate is installed at the output end of the hydraulic rod. One side of the connecting plate is bolted to the fixed plate, and pads are evenly arranged on one side of the fixed plate in sequence, and the pads are respectively in contact with the mounting plates.

[0014] Furthermore, the guide rail is provided with a slide groove, and damping rods are hinged on both sides of the connecting plate respectively. The ends of the damping rods are hinged to the sliders, and the sliders are slidably installed in the slide grooves.

[0015] Furthermore, the pad includes a base, an inner lining layer, reinforcement ribs and an outer skin layer. The base is paved with an inner lining layer, the inner lining layer is uniformly provided with reinforcement ribs in sequence, and the reinforcement ribs are provided with an outer skin layer.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model provides two adjustable mounting plate structures in conjunction with a limit mechanism, and can adjust the position of the bottom support mounting plate at any time according to needs. In the specific processing process, this can be used to limit and fix the aluminum alloy plate workpiece, and the surface of different areas of the aluminum alloy plate workpiece can be fixed accordingly according to the change of the processing position, so as to achieve the technical effect of the equipment being able to adjust the surface fixing points of the workpiece according to different processing areas, thereby maintaining stability and safety during the processing and ensuring the practicality of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a structural diagram of the bottom of the utility model;

[0020] Figure 3 This is a structural diagram of the fixing mechanism of the utility model;

[0021] Figure 4 This is a schematic structural diagram of the limiting mechanism of the utility model;

[0022] Figure 5 This is a structural diagram of the cushion block of the present utility model.

[0023] In the figure: 1. Mounting plate; 2. Fixing frame; 3. Driving motor; 4. Screw; 5. Guide rod; 6. Guide rail; 61. Slide groove; 7. Limiting mechanism; 71. U-shaped frame; 72. Handle bolt; 73. Pressure plate; 74. Column; 75. Gasket; 8. Mounting groove; 9. Fixing mechanism; 91. Hydraulic rod; 92. Connecting plate; 93. Damping rod; 94. Fixing plate; 95. Pad; 951. Base; 952. Lining layer; 953. Reinforcement rib; 954. Outer layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1 to 5 , the embodiment provided by the utility model:

[0026] A clamp for CNC machining of aluminum alloy plates comprises two mounting plates 1, both mounting plates 1 are symmetrically mounted with a limiting mechanism 7, the limiting mechanism 7 comprising a U-shaped frame 71, a handle bolt 72, a pressure plate 73 and a column 74, the U-shaped frame 71 being fixed to the mounting plate 1, the screw connection of the U-shaped frame 71 passing through the handle bolt 72, and the end of the handle bolt 72 being connected to the pressure plate 73 via a bearing fit. The limiting mechanism 7 is provided for clamping and fixing a workpiece placed on the surface of the mounting plate 1, the surface of the workpiece is placed at the bottom of the pressure plate 73, and the handle bolt 72 is used for adjustment, and the pressure plate 73 is driven downward to press and fix the workpiece, thereby achieving a mating and fixing effect. Columns 74 are provided between the inner walls of the U-shaped frame 71, and both sides of the pressure plate 73 are slidably plugged into the columns 74. The columns 74 are provided to stabilize the structure of the pressure plate 73, so that it can maintain position stability when subjected to force to move upward or downward. A gasket 75 is provided on the inner wall of one side of the U-shaped frame 71. The gasket 75 has anti-slip grooves and is an integrated structure made of rubber material. The structure of the gasket 75 has a good protective effect and can provide padding and stabilizing position for the workpiece to be processed.

[0027] Both mounting plates 1 are screwed with screw rods 4, with the threads on both sides of the screw rods 4 facing opposite directions. One end of the screw rod 4 passes through one of the mounting plates 1 and is movably mounted to the fixing frame 2 through a bearing. The fixing frame 2 is equipped with a drive motor 3, and the output end of the drive motor 3 is connected to the end of the screw rod 4 through a coupling. The fixing frame 2 is welded with a guide rod 5, which is slidably plugged into the two mounting plates 1 in turn. During use, a workpiece with a width that matches the spacing between the two limit mechanisms 7 is placed on the mounting plate 1 and clamped and fixed. During use, the spacing between the mounting plates 1 can be adjusted as needed to adjust the clamping position of the workpiece, thereby enabling the equipment to adjust the workpiece fixing point according to different processing areas, thereby maintaining stability and safety during the processing and ensuring the practicality of the fixture.

[0028] The bottoms of the two mounting plates 1 are symmetrically provided with mounting grooves 8 , and a guide rail 6 is overlapped between the mounting grooves 8 provided on the two mounting plates 1 . The guide rail 6 is fixed to the mounting plates 1 via a fixing mechanism 9 .

[0029] The fixing mechanism 9 includes a hydraulic rod 91, a connecting plate 92, a fixing plate 94 and a pad 95. The hydraulic rod 91 is installed to the guide rail 6. The output end of the hydraulic rod 91 is installed with a connecting plate 92. One side of the connecting plate 92 is bolted to the fixing plate 94. Pads 95 are evenly arranged on one side of the fixing plate 94 in sequence. The pads 95 are respectively in contact with the mounting plate 1. The fixing mechanism 9 is provided to connect the whole device. When clamping work is required, the screw rod 4 can be controlled to rotate by driving the motor 3. Since the threads at both ends of the screw rod 4 face opposite directions, the mounting plates 1 arranged on both sides of the screw rod 4 can move closer to or separate from each other. During this process, the two mounting plates 1 are still on the surface of the guide rail 6. After the mounting plate 1 is adjusted to the target position, the hydraulic cylinder can be used to drive the hydraulic rod 91 to push the connecting plate 92 to squeeze. The connecting plate 92 can press the fixing plate 94 forward to advance toward the inner wall of the mounting groove 8, and finally enable each pad 95 to be squeezed with the inner wall surface of the mounting groove 8 and form a fixed structure, thereby completing the position fixation of the two mounting plates 1. This structure can be used to make the overall structure easier to adapt to workpieces of different specifications for clamping and use, and the overall operation is simple and easy to implement.

[0030] The guide rail 6 is provided with a slide 61. Damping rods 93 are hinged on both sides of the connecting plate 92. The ends of the damping rods 93 are hinged to the slider, and the slider is slidably mounted on the slide 61. The damping rods 93 are provided to provide auxiliary support, which can make the overall structure of the connecting plate 92 more stable and significantly improve safety. The pad 95 includes a base 951, an inner lining layer 952, reinforcing ribs 953, and an outer skin 954. The base 951 is paved with an inner lining layer 952, and the inner lining layer 952 is uniformly provided with reinforcing ribs 953 in sequence. The reinforcing ribs 953 are provided with an outer skin 954. The inner lining layer 952 is paved with a rubber material, the reinforcing ribs 953 are made of steel structural material, and the outer skin 954 is made of PVC plastic material. The combination of these forms a layered protective structure, which ensures the overall strength and rigidity of the pad 95, provides good protection, and enables the pad 95 portion to be driven to perform a strong fixation work on the mounting plate 1.

[0031] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0032] In summary, the above is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications based on the shape, structure, characteristics and spirit described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fixture for CNC machining of aluminum alloy plates, comprising two mounting plates (1), characterized in that: A limiting mechanism (7) is symmetrically mounted on the two mounting plates (1), and a screw rod (4) is screwed onto one side of each of the two mounting plates (1), with threads on both sides of the screw rod (4) facing in opposite directions. One end of the screw rod (4) passes through one of the mounting plates (1) and is movably mounted to the fixing frame (2) through a bearing. A driving motor (3) is mounted on the fixing frame (2), and an output end of the driving motor (3) is transmission-connected to an end of the screw rod (4) through a coupling. The bottoms of the two mounting plates (1) are symmetrically provided with mounting grooves (8), and a guide rail (6) is overlapped between the mounting grooves (8) arranged on the two mounting plates (1). The guide rail (6) is fixed to the mounting plates (1) via a fixing mechanism (9).

2. The fixture for CNC machining of aluminum alloy plates according to claim 1, characterized in that: A guide rod (5) is welded to the fixing frame (2), and the guide rod (5) is slidably plugged into the two mounting plates (1) in sequence.

3. The fixture for CNC machining of aluminum alloy plates according to claim 1, characterized in that: The limiting mechanism (7) comprises a U-shaped frame (71), a handle bolt (72), a pressure plate (73) and a column (74); the U-shaped frame (71) is fixed on the mounting plate (1); the threaded connection of the U-shaped frame (71) passes through the handle bolt (72); and the end of the handle bolt (72) is connected to the pressure plate (73) through a bearing fit.

4. The fixture for CNC machining of aluminum alloy plates according to claim 3, characterized in that: Columns (74) are provided between the inner walls of the U-shaped frame (71), and both sides of the pressing plate (73) are slidably plugged into the surfaces of the columns (74).

5. The fixture for CNC machining of aluminum alloy plates according to claim 4, characterized in that: A gasket (75) is laid on an inner wall of one side of the U-shaped frame (71), and the gasket (75) is provided with anti-slip grooves. The gasket (75) is an integrated structure made of rubber material.

6. The fixture for CNC machining of aluminum alloy plates according to claim 1, characterized in that: The fixing mechanism (9) comprises a hydraulic rod (91), a connecting plate (92), a fixing plate (94) and a pad (95). The hydraulic rod (91) is mounted on the guide rail (6). The output end of the hydraulic rod (91) is mounted with a connecting plate (92). One side of the connecting plate (92) is bolted to the fixing plate (94). Pads (95) are uniformly arranged on one side of the fixing plate (94). The pads (95) are respectively in contact with the mounting plate (1).

7. The fixture for CNC machining of aluminum alloy plates according to claim 6, characterized in that: A slide groove (61) is provided on the guide rail (6), and damping rods (93) are hingedly connected to both sides of the connecting plate (92). The ends of the damping rods (93) are hingedly connected to a slider, and the slider is slidably mounted on the slide groove (61).

8. The fixture for CNC machining of aluminum alloy plates according to claim 7, characterized in that: The pad (95) comprises a base (951), an inner lining layer (952), reinforcement ribs (953), and an outer skin layer (954); the base (951) is provided with an inner lining layer (952); the inner lining layer (952) is uniformly provided with reinforcement ribs (953) in sequence; and the reinforcement ribs (953) are provided with an outer skin layer (954).

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