A fixture for numerical control machining

Abstract

The utility model relates to the field of clamp, disclose a clamping device for numerical control processing, including base, rotating component and clamping component, the bottom surface front end and rear end of base are fixedly connected with support foot respectively, the middle part of base upper surface is equipped with No. recess, the middle part of the outer wall of base rear end is fixedly connected with servo motor, the output shaft of servo motor is fixedly connected with No. two -way threaded rod. In the utility model, through the cooperation of No. screw rod, No. handle, No. recess, No. limit block, rotating lever, scale line and indication fast, the user carries out the multi -angle adjustment to the work piece that needs to process, and through the cooperation of servo motor, No. recess, No. two -way threaded rod, mounting frame, No. two -way threaded rod, No. handle, No. connecting block and No. clamping block, the user can clamp the work piece of different size.

Description

Technical Field

[0001] This utility model relates to the field of fixtures, and in particular to a fixture for CNC machining. Background Technology

[0002] A CNC machining fixture is a clamping device specifically designed for CNC machine tools. Its main function is to clamp the workpiece and keep it in the correct relative position during the CNC machining process.

[0003] However, most traditional CNC machining fixtures are relatively fixed, and during the machining process, the clamping range cannot be adjusted according to the different sizes of workpieces, which reduces the applicability of the fixtures. At the same time, most traditional fixtures can only provide a single angle clamping method, which means that when machining workpieces at different angles or positions, frequent disassembly and re-clamping are required, thus reducing the machining efficiency of CNC machining fixtures.

[0004] Therefore, those skilled in the art have provided a CNC machining fixture to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a CNC machining fixture. Through the cooperation of a first lead screw, a first rotating handle, a second groove, a first limit block, a rotating rod, a scale line, and an indicator block, it is convenient for the user to adjust the workpiece to be processed at multiple angles. At the same time, through the cooperation of a servo motor, a first groove, a first bidirectional threaded rod, a mounting frame, a second bidirectional threaded rod, a second rotating handle, a second connecting block, and a first clamping block, it is convenient for the user to clamp workpieces of different sizes.

[0006] To achieve the above objectives, this utility model provides a CNC machining fixture, including a base, a rotating assembly, and a clamping assembly. Support feet are fixedly connected to the front and rear ends of the lower surface of the base. A groove is formed in the middle of the upper surface of the base. A servo motor is fixedly connected to the middle of the outer wall of the rear end of the base. The output shaft of the servo motor is fixedly connected to a bidirectional threaded rod. A rotating assembly is provided on the upper surface of the base. The rotating assembly includes two mounting plates. A connecting block is threaded to the front and rear ends of the outer wall of the bidirectional threaded rod. The connecting block is fixedly connected to the mounting plate. A lead screw is threaded to the middle of the upper surface of each mounting plate. A second groove is formed inside each mounting plate. A limiting block is rotatably connected to the lower surface of the lead screw, penetrating the mounting plate to the inside of the second groove. A rotating rod is rotatably connected to the middle of the outer wall of the rear end of each mounting plate.

[0007] A clamping assembly is provided on one side of the first rotating rod near the center of the base. The clamping assembly includes a mounting frame. A fourth groove is opened on one side of the upper surface of the mounting frame. A second bidirectional threaded rod is rotatably connected to the inner walls of both sides of the mounting frame. A second connecting block is rotatably connected to both sides of the outer wall of the second bidirectional threaded rod. A first clamping block is rotatably connected to the side of the second connecting block near the center of the base. An extension block is fixedly connected to one side of the upper surface of the mounting frame. A second lead screw is threaded to the middle of the upper surface of the extension block. A third groove is opened inside the extension block. A second limiting block is rotatably connected to the lower surface of the second lead screw through the extension block and into the extension block. The second limiting block slides in the third and fourth grooves.

[0008] The above technical solution effectively increases the support height of the fixture by using support feet, ensuring that the base and the worktable are kept at a certain distance, thus reducing vibration and displacement.

[0009] Furthermore, the combination of the No. 1 lead screw, No. 1 rotating handle, No. 2 groove, No. 1 limit block, rotating rod, scale line and indicator block facilitates the user to make multi-angle adjustments to the workpiece to be processed. At the same time, the combination of the servo motor, No. 1 groove, No. 1 bidirectional threaded rod, mounting frame, No. 2 bidirectional threaded rod, No. 2 rotating handle, No. 2 connecting block and No. 1 clamping block facilitates the user to clamp workpieces of different sizes.

[0010] The above technical solution enables the two No. 1 connecting blocks to move synchronously and smoothly towards or in opposite directions by rotating smoothly under the drive of a servo motor via a bidirectional threaded rod, thereby improving the efficiency of adjustment.

[0011] Furthermore, the first limiting block slides within the second groove;

[0012] Through the above technical solution, by sliding the first limiting block in the second groove, the first limiting block can be smoothly raised and lowered under the drive of the first lead screw, avoiding jamming or deviation and improving the reliability of height adjustment.

[0013] Furthermore, the upper surface of the first lead screw extends through the mounting plate to the outside of the mounting plate and is fixedly connected to a first rotating handle;

[0014] The above technical solution allows operators to directly drive the No. 1 lead screw to rotate by rotating the No. 1 handle, thereby controlling the lifting and lowering of the No. 1 limit block, making the height adjustment process more intuitive and convenient.

[0015] Furthermore, the outer wall of the first rotating rod body is in close contact with the lower surface of the first limiting block;

[0016] The above technical solution eliminates the clearance between components through a tightly fitted structure, effectively preventing vibration or displacement that may occur during processing and improving the stability of the fixture system.

[0017] Furthermore, multiple scale lines are respectively opened on the outer wall of the first rotating rod on the side away from the center of the base, and an indicator block is respectively fixedly connected to the middle of the outer wall of the mounting plate on the side away from the center of the base.

[0018] The above technical solution enables operators to intuitively and quickly read the current clamping height through scale lines and indicators, achieving quantitative adjustment and improving repeatability accuracy.

[0019] Furthermore, one side of the second bidirectional threaded rod extends through the mounting frame to the outside of the mounting frame and is fixedly connected to a second rotating handle;

[0020] Through the above technical solution, the operator can intuitively control the rotation of the bidirectional threaded rod through the No. 2 handle, thereby precisely adjusting the synchronous opposite or backward movement of the No. 2 connecting blocks on both sides.

[0021] Furthermore, the upper surface of the second lead screw extends through the extension block to the outside of the extension block and is fixedly connected to the third rotating handle; the outer wall of the second bidirectional threaded rod is in close contact with the lower surface of the second limiting block.

[0022] Through the above technical solution, by tightly fitting the No. 2 bidirectional threaded rod with the No. 2 limiting block and cooperating with the No. 3 rotating handle, the operator can control the lifting and lowering movement of the No. 2 threaded rod through rotation, thereby driving the No. 2 limiting block to press down smoothly in the No. 3 groove, effectively preventing workpiece displacement or vibration during processing.

[0023] This utility model has the following beneficial effects:

[0024] 1. The CNC machining fixture proposed in this utility model, through the coordinated use of a lead screw, a rotating handle, a groove, a limit block, a rotating rod, a scale line, and an indicator, allows the user to easily adjust the workpiece at multiple angles according to requirements during the machining process. This avoids the problem of repeatedly disassembling and assembling the workpiece manually when multiple angle adjustments are required for machining, thereby improving the machining efficiency of the CNC machining fixture.

[0025] 2. The CNC machining fixture proposed in this utility model, through the coordinated use of a servo motor, a first groove, a first bidirectional threaded rod, a mounting frame, a second bidirectional threaded rod, a second rotating handle, a second connecting block, and a first clamping block, allows the operator to quickly adjust the clamping spacing to accommodate workpieces of different sizes during the machining process. Furthermore, the synchronous movement of the first clamping block prevents workpiece deformation caused by uneven clamping force while clamping the workpiece, thereby improving the applicability of the fixture. Attached Figure Description

[0026] Figure 1 This is a first-view schematic diagram of the main structure of a CNC machining fixture proposed in this utility model;

[0027] Figure 2 This is a partial cross-sectional view of a CNC machining fixture proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Support foot; 2. Base; 3. Servo motor; 4. Groove No. 1; 5. Bidirectional threaded rod No. 1; 6. Rotating assembly; 601. Mounting plate; 602. Lead screw No. 1; 603. Rotating handle No. 1; 604. Groove No. 2; 605. Limiting block No. 1; 606. Rotating rod; 607. Scale line; 608. Indicator block; 609. Connecting block No. 1; 7. Clamping assembly; 701. Mounting frame; 702. Bidirectional threaded rod No. 2; 703. Rotating handle No. 2; 704. Connecting block No. 2; 705. Clamping block No. 1; 706. Extension block; 707. Lead screw No. 2; 708. Groove No. 3; 709. Limiting block No. 2; 710. Groove No. 4; 711. Rotating handle No. 3. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Reference Figure 1-3This utility model provides a specific embodiment: a CNC machining fixture, including a base 2, a rotating assembly 6, and a clamping assembly 7. Support feet 1 are fixedly connected to the front and rear ends of the lower surface of the base 2. A groove 4 is formed in the middle of the upper surface of the base 2. A servo motor 3 is fixedly connected to the middle of the outer wall of the rear end of the base 2. A bidirectional threaded rod 5 is fixedly connected to the output shaft of the servo motor 3. The rotating assembly 6 is provided on the upper surface of the base 2, and the rotating assembly 6 includes two mounting plates 601. The outer surface of the bidirectional threaded rod 5... The front and rear ends of the wall are each threaded with a connecting block 609. The connecting block 609 is fixedly connected to the mounting plate 601. The middle of the upper surface of the mounting plate 601 is threaded with a screw rod 602. The inside of the mounting plate 601 is provided with a groove 604. The lower surface of the screw rod 602 passes through the mounting plate 601 and is rotatably connected to a limiting block 605. The middle of the outer wall at the rear end of the mounting plate 601 is rotatably connected to a rotating rod 606.

[0034] A clamping assembly 7 is provided on one side of the first rotating rod 606 near the center of the base 2. The clamping assembly 7 includes a mounting frame 701. A fourth groove 710 is opened on one side of the upper surface of the mounting frame 701. A second double-threaded rod 702 is rotatably connected to the inner walls of both sides of the mounting frame 701. A second connecting block 704 is rotatably connected to both sides of the outer wall of the second double-threaded rod 702. A first clamping block 705 is rotatably connected to the side of the second connecting block 704 near the center of the base 2. An extension block 706 is fixedly connected to one side of the upper surface of the mounting frame 701. A second lead screw 707 is threaded to the middle of the upper surface of the extension block 706. The interior has a third groove 708. The lower surface of the second lead screw 707 passes through the extension block 706 and is rotatably connected to the second limit block 709 inside the extension block 706. The second limit block 709 slides in the third groove 708 and the fourth groove 710. Through the cooperation of the first lead screw, the first rotating handle, the second groove, the first limit block, the rotating rod, the scale line and the indicator, it is convenient for the user to make multi-angle adjustments to the workpiece to be processed. At the same time, through the cooperation of the servo motor, the first groove, the first bidirectional threaded rod, the mounting frame, the second bidirectional threaded rod, the second rotating handle, the second connecting block and the first clamping block, it is convenient for the user to clamp workpieces of different sizes.

[0035] Reference Figure 3-4The front end of the first bidirectional threaded rod 5 passes through the base 2 into the interior of the first groove 4 and is rotatably connected to the inner wall of the front end of the first groove 4. Driven by the servo motor 3, the bidirectional threaded rod 5 rotates smoothly, allowing the two first connecting blocks 609 to move synchronously and smoothly towards or in opposite directions, improving adjustment efficiency. The first limiting block 605 slides within the second groove 604. This sliding of the first limiting block 605 within the second groove 604 allows it to rise and fall smoothly under the drive of the first lead screw 602, preventing jamming or offset and improving the reliability of height adjustment. The first lead screw 6... 02 The upper surface of the mounting plate 601 extends through the mounting plate 601 to the outside of the mounting plate 601 and is fixedly connected to a first rotating handle 603. This allows the operator to directly drive the first lead screw 602 to rotate by rotating the first rotating handle 603, thereby controlling the lifting and lowering of the first limit block 605. This makes the height adjustment process more intuitive and convenient. The outer wall of the first rotating rod 606 is tightly fitted to the lower surface of the first limit block 605. This tight fit eliminates the play between components, effectively preventing vibration or displacement that may occur during processing and improving the stability of the fixture system. The first rotating rod 606 is located away from the center of the base 2. Multiple scale lines 607 are respectively opened on one side of the outer wall. Indicator blocks 608 are fixedly connected to the middle of the outer wall of the mounting plate 601 on the side furthest from the center of the base 2. The scale lines 607 and indicator blocks 608 allow the operator to intuitively and quickly read the current clamping height, achieving quantitative adjustment and improving repeatability. The second bidirectional threaded rod 702 passes through the mounting frame 701 to the outside of the mounting frame 701 and is fixedly connected to a second rotating handle 703. The second rotating handle 703 allows the operator to intuitively control the rotation of the bidirectional threaded rod, thereby precisely adjusting the second connecting blocks 7 on both sides. The synchronous opposite or opposite movement of 04, the upper surface of the second lead screw 707 passes through the extension block 706 to the outside of the extension block 706 and is fixedly connected to the third rotating handle 711, the outer wall of the second bidirectional threaded rod 702 is tightly fitted with the lower surface of the second limiting block 709, through the tight fit between the second bidirectional threaded rod 702 and the second limiting block 709 and the cooperation of the third rotating handle 711, the operator can control the lifting and lowering movement of the second lead screw 707 by rotating the rod, thereby driving the second limiting block 709 to press down smoothly in the third groove 708, effectively preventing workpiece displacement or vibration during the processing.

[0036] Working principle: First, the servo motor 3 is started, and its output shaft drives the first bidirectional threaded rod 5 to rotate. Through the threaded connection of the first connecting block 609, it pushes the two mounting plates 601 to move in opposite directions along the track on the base 2, achieving coarse positioning rotation of the workpiece. Second, the indicator 608 on the mounting plate 601 cooperates with the scale line 607 on the first rotating rod 607 to provide an angle reference. Next, the first rotating handle 603 is operated to rotate the first lead screw 602. Through the sliding of the first limiting block 605 within the second groove 604, this... The timing indicator block 608, in conjunction with the scale line 607, can control the tilt angle of the first rotating rod 606 to achieve multi-angle machining positioning. Finally, the workpiece is placed on the mounting frame 701 of the clamping assembly 7, and the second rotating handle 703 is rotated to drive the second bidirectional threaded rod 702 to rotate. The second connecting block 704 drives the first clamping block 705 to clamp the workpiece. At the same time, the third rotating handle 711 is rotated to adjust the second lead screw 707. By using the sliding of the second limiting block 709 within the extension block 706, the workpiece can be finely adjusted laterally, thus completing the clamping and positioning.

[0037] The following points should be noted in this article:

[0038] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0039] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0040] Finally, it should be noted that the above description is only 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 specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific 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 CNC machining fixture, comprising a base (2), a rotating assembly (6), and a clamping assembly (7), characterized in that: The base (2) has support feet (1) fixedly connected to the front and rear ends of its lower surface. A groove (4) is formed in the middle of the upper surface of the base (2). A servo motor (3) is fixedly connected to the middle of the outer wall of the rear end of the base (2). The output shaft of the servo motor (3) is fixedly connected to a bidirectional threaded rod (5). A rotating assembly (6) is provided on the upper surface of the base (2). The rotating assembly (6) includes two mounting plates (601). A connecting block is threadedly connected to the front and rear ends of the outer wall of the bidirectional threaded rod (5). (609) The first connecting block (609) and the mounting plate (601) are respectively fixedly connected. The middle part of the upper surface of the mounting plate (601) is respectively threaded with a first screw (602). The inside of the mounting plate (601) is respectively provided with a second groove (604). The lower surface of the first screw (602) passes through the mounting plate (601) to the inside of the second groove (604) and is respectively rotatably connected with a first limiting block (605). The middle part of the outer wall of the rear end of the mounting plate (601) is respectively rotatably connected with a first rotating rod (606). A clamping assembly (7) is provided on one side of the first rotating rod (606) near the center of the base (2). The clamping assembly (7) includes a mounting frame (701). A fourth groove (710) is provided on one side of the upper surface of the mounting frame (701). A second bidirectional threaded rod (702) is rotatably connected to the inner walls of both sides of the mounting frame (701). A second connecting block (704) is rotatably connected to both sides of the outer wall of the second bidirectional threaded rod (702). A second connecting block (704) is rotatably connected to the side of the second connecting block (704) near the center of the base (2). There is a clamping block (705). An extension block (706) is fixedly connected to one side of the upper surface of the mounting frame (701). A second lead screw (707) is threadedly connected to the middle of the upper surface of the extension block (706). A third groove (708) is opened inside the extension block (706). A second limiting block (709) is rotatably connected to the lower surface of the second lead screw (707) through the extension block (706) and inside the extension block (706). The second limiting block (709) slides in the third groove (708) and the fourth groove (710).

2. The CNC machining fixture according to claim 1, characterized in that: The front end of the first bidirectional threaded rod (5) passes through the base (2) to the interior of the first groove (4) and is rotatably connected to the inner wall of the front end of the first groove (4).

3. A CNC machining fixture according to claim 1, characterized in that: The first limiting block (605) slides within the second groove (604).

4. A CNC machining fixture according to claim 1, characterized in that: The upper surface of the first lead screw (602) extends through the mounting plate (601) to the outside of the mounting plate (601) and is fixedly connected to the first rotating handle (603).

5. A CNC machining fixture according to claim 1, characterized in that: The outer wall of the first rotating rod (606) is in close contact with the lower surface of the first limiting block (605).

6. A CNC machining fixture according to claim 1, characterized in that: Multiple scale lines (607) are respectively opened on the outer wall of the first rotating rod (606) away from the center of the base (2), and an indicator block (608) is respectively fixedly connected to the middle of the outer wall of the mounting plate (601) away from the center of the base (2).

7. A CNC machining fixture according to claim 1, characterized in that: The second bidirectional threaded rod (702) extends through the mounting frame (701) to the outside of the mounting frame (701) and is fixedly connected to the second rotating handle (703).

8. A CNC machining fixture according to claim 1, characterized in that: The upper surface of the second lead screw (707) extends through the extension block (706) to the outside of the extension block (706) and is fixedly connected to the third rotating handle (711). The outer wall of the second bidirectional threaded rod (702) is tightly fitted with the lower surface of the second limiting block (709).

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