Positioning tool

Abstract

The utility model discloses a positioning tool in the technical field of numerical control machine tools, which comprises a numerical control machine tool main body, a support frame and a workbench, a positioning mechanism is arranged in the workbench, the positioning mechanism comprises two groups of connecting blocks, side plates are arranged at the tops of the two groups of connecting blocks, and the inner side surfaces of the two groups of side plates are rotatably connected with U-shaped clamps. The outer wall of the right side plate is connected with a servo motor, the tops and the bottoms of the two sets of U-shaped clamps are in threaded connection with screws, clamping pads are installed at the bottoms of the screws, a fixing box is arranged in the middle of the outer wall of the rear side of the workbench, a lifting toothed plate is arranged in the fixing box in a sliding connection mode, and an auxiliary supporting table is installed at the top of the lifting toothed plate. The numerical control machine tool can quickly machine different surfaces of the workpiece, and the fixed workpiece does not need to be dismounted to adjust the position and then fixed and positioned again, so that the workpiece machining efficiency of the numerical control machine tool is improved; the lifting auxiliary supporting table can play a role in supporting the bottom of the workpiece, and the stability of workpiece positioning is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled machine tools, in particular to a positioning tool. Background Art

[0002] A CNC machine tool is a mechanical device that can automatically process according to a pre-entered program. It can control the position, speed and processing path of the tool through a computer to achieve precise processing operations. When a CNC machine tool processes a workpiece, it is necessary to use a positioning fixture to fix the position of the workpiece through the positioning fixture to avoid the workpiece position shifting during processing and affecting the processing accuracy.

[0003] The positioning fixtures on some existing CNC machine tools can locate and fix the position of the workpiece when in use, but cannot flip the fixed workpiece, resulting in the need to remove the fixed workpiece and readjust the position for secondary fixation and positioning when processing the other side of the workpiece. This increases the steps of secondary fixation and positioning, resulting in lower efficiency in CNC machine tool processing of workpieces. To this end, we propose a positioning fixture. Utility Model Content

[0004] The purpose of the utility model is to provide a positioning tool to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A positioning tool comprises a CNC machine tool body, a support frame is arranged in the CNC machine tool body, and a workbench is connected to the support frame, a positioning mechanism is arranged in the workbench, the positioning mechanism comprises two groups of connecting blocks, a sliding limit groove matched with the connecting block is opened on the top of the workbench, and the sliding limit groove is slidably connected with the two groups of connecting blocks, side panels are installed on the tops of the two groups of connecting blocks, the inner sides of the two groups of side panels are rotatably connected with U-shaped clamps, the outer wall of the right side panel is connected with a servo motor, and the output end of the servo motor is connected to the outer wall of the right U-shaped clamp, the tops and bottoms of the two groups of U-shaped clamps are threadedly connected with screws, and a clamping pad is installed at the bottom of the screw, a fixing box is arranged in the middle of the rear outer wall of the workbench, a lifting gear plate is slidably connected thereto in the fixing box, and an auxiliary supporting platform is installed on the top of the lifting gear plate.

[0007] Further: the positioning mechanism also includes a stepper motor, which is located on the left outer wall of the workbench, and the output end of the stepper motor is connected to a bidirectional screw rod, on which two sets of threaded sleeves are threadedly connected, and the tops of the two sets of threaded sleeves are respectively connected to the bottoms of the two sets of connecting blocks.

[0008] Further: a reduction motor is provided on the right outer wall of the fixed box, and the output end of the reduction motor is connected to a driving shaft, a rotating gear is sleeved on the driving shaft, and the rotating gear is meshed and connected with the lifting gear plate.

[0009] Furthermore: the top and the bottom of the fixed box are both provided with openings which are arranged through, and the openings are slidably connected with the lifting tooth plate.

[0010] Furthermore: the left U-shaped clamp is rotatably connected to the inner side surface of the left side plate through a bearing, and adjacent U-shaped clamps are on the same horizontal line.

[0011] Furthermore: the outer wall of the clamping pad and the upper surface of the auxiliary support platform are both provided with rubber pads.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model can drive the bidirectional lead screw to rotate through the operation of the stepping motor, and the two sets of threaded sleeves threadedly connected with the bidirectional lead screw can make the U-shaped clamps on the inner sides of the two sets of side plates approach or move away from each other after the sliding limit groove and the sliding limit of the connecting block pass through the sliding limit groove and the connecting block. The workpieces of different sizes on the CNC machine tool can be quickly positioned, and the workpieces in adjacent U-shaped clamps can be driven to flip through the operation of the servo motor. The CNC machine tool can quickly process different sides of the workpiece without removing the fixed workpiece for adjustment and then re-fixing and positioning, effectively improving the efficiency of CNC machine tool processing workpieces; through the operation of the reduction motor on the outer wall of the fixed box, the rotating gear can be driven to rotate, and since the rotating gear is meshed and connected with the lifting gear plate, the auxiliary support platform on the top of the lifting gear plate can be moved up and down, and the auxiliary support platform can support the bottom of the workpiece between adjacent U-shaped clamps, further improving the stability of workpiece positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the workbench structure of the utility model;

[0016] Figure 3 It is a schematic cross-sectional view of the side connection structure of the workbench and the auxiliary support platform of the utility model.

[0017] In the figure: 1. CNC machine tool body; 2. Support frame; 3. Workbench; 4. Stepper motor; 5. Bidirectional lead screw; 6. Threaded sleeve; 7. Sliding limit groove; 8. Connecting block; 9. Side plate; 10. U-shaped clamp; 11. Servo motor; 12. Screw; 13. Clamping pad; 14. Auxiliary support table; 15. Fixing box; 16. Rotating gear; 17. Lifting gear plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment 1:

[0020] See also Figure 1-3 The utility model provides a technical solution: a positioning tool, including a CNC machine tool body 1, a support frame 2 is arranged in the CNC machine tool body 1, and a workbench 3 is connected to the support frame 2, a positioning mechanism is arranged in the workbench 3, the positioning mechanism includes two groups of connecting blocks 8, a sliding limit groove 7 adapted to the connecting block 8 is opened on the top of the workbench 3, and the sliding limit groove 7 is slidably connected with the two groups of connecting blocks 8, side plates 9 are installed on the tops of the two groups of connecting blocks 8, the inner sides of the two groups of side plates 9 are rotatably connected with U-shaped clamps 10, the outer wall of the right side plate 9 is connected with a servo motor 11, and the output end of the servo motor 11 is connected to the outer wall of the right U-shaped clamp 10, the top and bottom of the two groups of U-shaped clamps 10 are threadedly connected with screws 12, and a clamping pad 13 is installed at the bottom of the screw 12, a fixing box 15 is arranged in the middle of the rear outer wall of the workbench 3, a lifting tooth plate 17 is slidably connected in the fixing box 15, and an auxiliary supporting platform 14 is installed on the top of the lifting tooth plate 17.

[0021] Before use, the electrical ends of each electrical device are electrically connected to the electrical ends of the external power supply and the controller through wires, wherein the two groups of threaded sleeves 6 are fixedly connected to the two groups of connecting blocks 8 respectively, the sliding limit groove 7 runs through the top of the workbench 3, and the cross-sections of the sliding limit groove 7 and the connecting block 8 are both rectangular. Through the action of the positioning mechanism, the side plates 9 fixedly connected to the tops of the two groups of connecting blocks 8 can be moved closer or farther away from each other, thereby adjusting the left and right spacing between adjacent U-shaped clamps 10, and the rotation of the screw 12 can drive the clamping pad 13 at the bottom to move, thereby fixing workpieces of different sizes on the CNC machine tool. When processing the other side of the workpiece, start the servo motor 11. The operation of the servo motor 11 can drive the right U-shaped clamp 10 to rotate. Since the left U-shaped clamp 10 is also set to rotate, the workpiece between adjacent U-shaped clamps 10 can be turned over. The CNC machine tool can quickly process different sides of the workpiece without removing the fixed workpiece, adjusting the position and then re-fixing it, which effectively improves the efficiency of CNC machine tool processing workpieces; through the action of the liftable lifting gear plate 17, the auxiliary support platform 14 can support the bottom of the workpiece between adjacent U-shaped clamps 10, further improving the stability of workpiece positioning.

[0022] Preferably, the positioning mechanism also includes a stepper motor 4, which is located on the left outer wall of the workbench 3, and the output end of the stepper motor 4 is connected to a bidirectional screw rod 5, on which two groups of threaded sleeves 6 are threadedly connected, and the tops of the two groups of threaded sleeves 6 are respectively connected to the bottoms of two groups of connecting blocks 8; the operation of the stepper motor 4 can drive the bidirectional screw rod 5 to rotate forward or reverse, and after the two groups of threaded sleeves 6 threadedly connected to the bidirectional screw rod 5 are limited by the sliding of the connecting block 8 and the sliding limit groove 7, the two groups of connecting blocks 8 are close to or away from each other in the sliding limit groove 7.

[0023] Preferably, a reduction motor is provided on the right outer wall of the fixed box 15, and the output end of the reduction motor is connected to a driving shaft, on which a rotating gear 16 is sleeved, and the rotating gear 16 is meshingly connected with a lifting gear plate 17; the operation of the reduction motor can drive the rotating gear 16 on the driving shaft to rotate, and since the rotating gear 16 is meshingly connected with the lifting gear plate 17, the lifting gear plate 17 is slidingly connected to the fixed box 15, and the top of the lifting gear plate 17 is fixedly connected to the auxiliary support platform 14, so that the auxiliary support platform 14 can move up and down.

[0024] Preferably, the top and the bottom of the fixing box 15 are both provided with openings extending therethrough, and the openings are slidably connected to the lifting gear plate 17 .

[0025] Preferably, the left U-shaped clamp 10 is rotatably connected to the inner side surface of the left side plate 9 via a bearing, and adjacent U-shaped clamps 10 are on the same horizontal line.

[0026] Embodiment 2:

[0027] Reference Figure 2 This embodiment is different from the first embodiment in that the outer wall of the clamping pad 13 and the upper surface of the auxiliary support platform 14 are both provided with rubber pads; the rubber pads play a protective role to avoid damage to the workpiece when positioning it.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning tool, comprising a CNC machine tool body (1), characterized in that: The CNC machine tool body (1) is provided with a support frame (2), and a workbench (3) is connected to the support frame (2). A positioning mechanism is provided in the workbench (3), and the positioning mechanism includes two groups of connecting blocks (8). The top of the workbench (3) is provided with a sliding limit groove (7) adapted to the connecting block (8), and the sliding limit groove (7) is slidably connected to the two groups of connecting blocks (8). The tops of the two groups of connecting blocks (8) are both equipped with side plates (9), and the inner sides of the two groups of side plates (9) are both rotatably connected with U-shaped clamps (10). The outer wall of the side plate (9) is connected to a servo motor (11), and the output end of the servo motor (11) is connected to the outer wall of the right U-shaped clamp (10). The top and bottom of the two sets of U-shaped clamps (10) are both threadedly connected with screw rods (12), and a clamping pad (13) is installed at the bottom of the screw rod (12). A fixing box (15) is provided in the middle of the rear outer wall of the workbench (3), and a lifting tooth plate (17) is slidably connected therein, and an auxiliary support platform (14) is installed on the top of the lifting tooth plate (17).

2. A positioning tool according to claim 1, characterized in that: The positioning mechanism further comprises a stepping motor (4), the stepping motor (4) being located on the left outer wall of the workbench (3), and the output end of the stepping motor (4) being connected to a bidirectional lead screw (5).

3. A positioning tool according to claim 2, characterized in that: The bidirectional screw rod (5) is threadedly connected with two groups of threaded sleeves (6), and the tops of the two groups of threaded sleeves (6) are respectively connected to the bottoms of the two groups of connecting blocks (8).

4. A positioning tool according to claim 1, characterized in that: A reduction motor is provided on the right outer wall of the fixed box (15), and the output end of the reduction motor is connected to a driving shaft, a rotating gear (16) is sleeved on the driving shaft, and the rotating gear (16) is meshedly connected with a lifting gear plate (17).

5. A positioning tool according to claim 1, characterized in that: The top and bottom of the fixing box (15) are both provided with openings extending therethrough, and the openings are slidably connected to the lifting tooth plate (17).

6. A positioning tool according to claim 1, characterized in that: The left U-shaped clamp (10) is rotatably connected to the inner side surface of the left side plate (9) via a bearing, and adjacent U-shaped clamps (10) are located on the same horizontal line.

7. A positioning tool according to claim 1, characterized in that: The outer wall of the clamping pad (13) and the upper surface of the auxiliary support platform (14) are both provided with rubber pads.

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