Positioning fixture for numerical control machine tool

Abstract

The utility model provides a positioning fixture for a numerical control machine tool, which relates to the technical field of machine tool fixtures, solves the problems that the positioning fixture cannot turn over and is low in processing efficiency, and comprises a fixed bottom plate, a positioning groove and a positioning block are respectively arranged on two opposite sides of the fixed bottom plate, and a pneumatic fixture mechanism is arranged on one side of the positioning groove. The pneumatic clamp mechanism is arranged between the limiting blocks to do linear motion and connected with a rotating shaft of the adjusting mechanism, and the adjusting mechanism is connected with a rotating shaft of the fixed bottom plate. The fixture is high in integration, workpieces to be machined can be detached and turned over independently, and the application efficiency of the fixture is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of machine tool fixture technology, specifically to a positioning fixture for CNC machine tools. Background Technology

[0002] A pneumatic positioning fixture is a fixture that uses compressed air as a power source and converts air pressure into mechanical energy through pneumatic components such as cylinders to position and clamp workpieces.

[0003] Currently, ordinary pneumatic positioning fixtures cannot achieve the flipping of the workpiece being processed, which increases the processing steps and results in low processing efficiency. Utility Model Content

[0004] Therefore, this utility model provides a positioning fixture for CNC machine tools to solve the problems of positioning fixtures being unable to be rotated and low processing efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for a CNC machine tool, comprising a fixed base plate, which can be nested and fixed on a T-shaped worktable. The top of the fixed base plate is provided with a positioning groove, a pneumatic clamping mechanism, an adjusting mechanism, and a limiting block. The bottom of the fixed base plate is provided with a positioning block. The positioning groove is located on the top side of the fixed base plate, parallel to the side of the fixed base plate. Two limiting blocks are provided, each rectangular in shape, and are welded to the fixed base plate. The two limiting blocks are arranged parallel to each other, and the maximum distance between the two limiting blocks is consistent with the maximum length of the pneumatic clamping mechanism. The adjusting mechanism is located on the opposite side of the positioning groove and is connected to the rotating shaft of the fixed base plate. The pneumatic clamping mechanism is located between the limiting blocks and is connected to the rotating shaft of the adjusting mechanism.

[0006] Preferably, the pneumatic clamping mechanism includes a power device, a cylinder, a telescopic rod, a fixed clamp, and a connecting plate. The fixed clamp is disposed on one side of the connecting plate, and the power device is disposed on the other side of the connecting plate. The power device and the connecting plate are fixedly connected by a connecting rod. The cylinder is disposed between the connecting plate and the power device, and the output end of the cylinder is fixedly connected to the connecting plate. The telescopic rod connects the connecting plate and the adjusting mechanism.

[0007] Preferably, the power equipment includes a solenoid valve, a coil, and a control switch. The solenoid valve is configured as a "one-in, two-out" solenoid valve. The solenoid valve is connected to the coil, and the control switch is electrically connected to the coil.

[0008] Preferably, three cylinders are provided, and the cylinders are connected to the solenoid valve through air pipes.

[0009] Preferably, the telescopic rod is Y-shaped, with one end connected to both ends of the connecting plate and the other end rotatably connected to the adjusting mechanism, thereby integrating the power equipment, the cylinder, the fixing clamp, and the connecting plate into one unit.

[0010] Preferably, the number of slots in the positioning groove is the same as the number of fixing clips.

[0011] Preferably, there are two connecting rods, and the connecting rods are L-shaped.

[0012] Preferably, the adjustment mechanism includes a vertical rotating shaft and a disc, the vertical rotating shaft is disposed inside the fixed base plate and one end of the numerical rotating shaft is rotatably connected to the fixed base plate, and the bottom of the disc is fixedly connected to the vertical rotating shaft.

[0013] Preferably, at least six fixing clips are provided.

[0014] Preferably, at least three positioning blocks are provided, and each positioning block is configured as a long cube, with the positioning blocks arranged parallel and symmetrically.

[0015] The application employs the above technical solution and has at least the following beneficial effects:

[0016] This positioning fixture is highly integrated, allowing the workpieces to be processed to be disassembled or flipped individually, greatly improving the application efficiency of the fixture.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram provided by an embodiment of the present utility model;

[0020] Figure 2 This is a top view provided in an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the adjustment mechanism provided in an embodiment of the present invention;

[0022] In the diagram: 1. Fixed base plate; 2. Positioning block; 3. Positioning groove; 4. Pneumatic clamping mechanism; 5. Adjustment mechanism; 6. Limiting block; 41. Power equipment; 42. Cylinder; 43. Telescopic rod; 44. Fixed clamp; 45. Connecting plate; 46. Connecting rod; 51. Vertical rotating shaft; 52. Disc; 411. Solenoid valve; 412. Coil; 413. Control switch. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] A specific embodiment of this utility model provides a positioning fixture for CNC machine tools, combined with the attached... Figure 1 As shown, the system includes a fixed base plate 1, with positioning blocks 2 at its bottom. In this embodiment, three positioning blocks 2 are provided, each a long rectangular cube. The positioning blocks 2 can be nested and fixed to a T-shaped worktable, where the T-shaped worktable clamps and secures the positioning blocks 2 to ensure the stability of the fixed base plate 1. The top of the fixed base plate 1 is provided with a positioning groove 3, a pneumatic clamping mechanism 4, an adjusting mechanism 5, and limiting blocks 6. The positioning groove 3 is located on the side of the top of the fixed base plate 1, parallel to the side of the fixed base plate 1. There are two limiting blocks 6, each a rectangular strip, which are welded to the fixed base plate 1. The two limiting blocks 6 are parallel to each other, and the maximum distance between the two limiting blocks 6 is the same as the maximum length of the pneumatic clamping mechanism 4. The adjusting mechanism 5 is located on the opposite side of the positioning groove 3 and is connected to the rotating shaft of the fixed base plate 1. The pneumatic clamping mechanism 4 is located between the limiting blocks 6 and is connected to the rotating shaft of the adjusting mechanism 5.

[0025] Specifically, such as Figure 2As shown, the pneumatic clamping mechanism 4 includes a power unit 41, a cylinder 42, a telescopic rod 43, a fixing clamp 44, a connecting plate 45, and a connecting rod 46. In this embodiment, six fixing clamps 44 are provided, all arranged parallel and symmetrically on one side of the connecting plate 45. The clamping openings of the fixing clamps 44 are opposite to the openings of the positioning grooves 3. The number of fixing clamps 44 and the openings of the positioning grooves 3 are the same in this embodiment. The power unit 41 is located on the other side of the connecting plate 45 and is connected to the connecting plate 45 as a whole via the connecting rod 46. In this embodiment, the connecting rod 46 is provided with... There are two connecting rods 46, which are L-shaped. The two connecting rods 46 are set at both ends of the power device 41 to connect the power device 41 and the connecting plate 45. Several cylinders 42 are set between the power device 41 and the connecting plate 45. In this embodiment, there are 3 cylinders 42, and the output end of the cylinder 42 is fixedly connected to the connecting plate 45. The cylinders 42 are arranged in parallel. The maximum length between the limiting blocks 6 is the length of the connecting plate 45. The pneumatic clamping mechanism 4 can move in a straight line between the limiting blocks 6 by setting the limiting blocks 6.

[0026] Specifically, the power equipment 41 also includes a solenoid valve 411, a coil 412 and a control switch 413. In this embodiment, the solenoid valve 411 is configured as a "one-in-two-out" solenoid valve. The solenoid valve 411 is connected to the coil 412, the control switch 413 is electrically connected to the coil 412, and the solenoid valve 411 is connected to the cylinder 42 through an air pipe.

[0027] Specifically, the telescopic rod 43 is configured as a Y-shaped rod, with its symmetrical ends set to the telescopic state and fixedly connected to the connecting plate 45, and the other end connected to the rotating shaft of the adjusting mechanism 5; the telescopic rod 43 can extend and retract with the extension and retraction of the cylinder 42.

[0028] Specifically, such as Figure 3 As shown, the adjustment mechanism 5 includes a vertical rotating shaft 51 and a disc 52. The vertical rotating shaft 51 is disposed inside the fixed base plate 1 and is rotatably connected to the fixed base plate 1. The other end is fixedly connected to the bottom of the disc 52, so that the rotation of the vertical rotating shaft 51 can drive the rotation of the disc 52.

[0029] The working principle of this embodiment:

[0030] Align the positioning block 2 with the groove of the T-shaped worktable, place the positioning block 2 to clamp the T-shaped worktable firmly, and fix the base plate 1.

[0031] The workpiece to be processed is clamped and fixed by the fixing clamp 44. The control switch 413 is activated to control the cylinder 42 through the solenoid valve 411. The cylinder 42 pushes the connecting plate 45 and at the same time drives the telescopic rod 43 to move towards the positioning groove 3, so that the fixing clamp 44 and the groove of the positioning groove 3 clamp the workpiece to be processed.

[0032] After processing one side of the workpiece is completed, the cylinder 42 is retracted, the pneumatic clamping mechanism 4 is lifted, and the pneumatic clamping mechanism 4 is made to make a circular motion with the connecting shaft between the telescopic rod 43 and the disc 52 as the base point. The pneumatic clamping mechanism 4 is lifted, and the disc 52 is rotated with the vertical rotating shaft 51 as the base point. The rotation angle is 180°, thus completing the forward and reverse adjustment of the workpiece.

[0033] The pneumatic clamping mechanism 4 is placed between the limiting blocks 6, and the cylinder 42 pushes the connecting plate 45 to fix the workpiece to be processed by the fixing clamp 44 and the slot of the positioning groove 3, thus completing the processing of the other side of the workpiece.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A positioning fixture for a CNC machine tool, comprising a fixed base plate (1), the fixed base plate (1) being nested and fixed on a T-shaped worktable, characterized in that: The top of the fixed base plate (1) is provided with a positioning groove (3), a pneumatic clamping mechanism (4), an adjusting mechanism (5), and a limiting block (6), and the bottom of the fixed base plate (1) is provided with a positioning block (2); the positioning groove (3) is located on the top side of the fixed base plate (1) and is parallel to the side of the fixed base plate (1); there are two limiting blocks (6) in the shape of rectangular strips, the limiting blocks (6) are welded to the fixed base plate (1), the two limiting blocks (6) are arranged in parallel, and the maximum distance between the two limiting blocks (6) is consistent with the maximum length of the pneumatic clamping mechanism (4); the adjusting mechanism (5) is located on the opposite side of the positioning groove (3), and the adjusting mechanism (5) is connected to the rotating shaft of the fixed base plate (1); the pneumatic clamping mechanism (4) is located between the limiting blocks (6), and the pneumatic clamping mechanism (4) is connected to the rotating shaft of the adjusting mechanism (5).

2. A positioning fixture for a CNC machine tool according to claim 1, characterized in that: The pneumatic clamping mechanism (4) includes a power device (41), a cylinder (42), a telescopic rod (43), a fixed clamp (44), and a connecting plate (45). The fixed clamp (44) is located on one side of the connecting plate (45), and the power device (41) is located on the other side of the connecting plate (45). The power device (41) and the connecting plate (45) are fixedly connected by a connecting rod (46). The cylinder (42) is located between the connecting plate (45) and the power device (41), and the output end of the cylinder (42) is fixedly connected to the connecting plate (45). The telescopic rod (43) connects the connecting plate (45) and the adjusting mechanism (5).

3. A positioning fixture for a CNC machine tool according to claim 2, characterized in that: The power equipment (41) includes a solenoid valve (411), a coil (412) and a control switch (413). The solenoid valve (411) is configured as a "one-in-two-out" solenoid valve. The solenoid valve (411) is connected to the coil (412), and the control switch (413) is electrically connected to the coil (412).

4. A positioning fixture for a CNC machine tool according to claim 3, characterized in that: Three cylinders (42) are provided, and the cylinders (42) are connected to the solenoid valve (411) through air pipes.

5. A positioning fixture for a CNC machine tool according to claim 2, characterized in that: The telescopic rod (43) is Y-shaped, with one end connected to both ends of the connecting plate (45) and the other end rotatably connected to the adjusting mechanism (5). The power equipment (41), the cylinder (42), the fixing clamp (44) and the connecting plate (45) are integrated through the telescopic rod (43).

6. A positioning fixture for a CNC machine tool according to claim 2, characterized in that: The number of slots in the positioning groove (3) is the same as the number of fixing clips (44).

7. A positioning fixture for a CNC machine tool according to claim 2, characterized in that: Two connecting rods (46) are provided, and the connecting rods (46) are L-shaped.

8. A positioning fixture for a CNC machine tool according to claim 1, characterized in that: The adjustment mechanism (5) includes a vertical rotating shaft (51) and a disc (52). The vertical rotating shaft (51) is located inside the fixed base plate (1) and one end of the vertical rotating shaft (51) is rotatably connected to the fixed base plate (1). The bottom of the disc (52) is fixedly connected to the other end of the vertical rotating shaft (51).

9. A positioning fixture for a CNC machine tool according to claim 6, characterized in that: At least six fixing clips (44) are provided.

10. A positioning fixture for a CNC machine tool according to claim 1, characterized in that: At least three positioning blocks (2) are provided. The positioning blocks (2) are set as long cubes, and the positioning blocks (2) are arranged in parallel and symmetrically.

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