Numerical control machining center clamp

Abstract

The utility model discloses a numerical control machining center clamp which comprises a table top, a round positioning groove with the cross section of a trapezoidal structure is formed in the side, close to the top, in the table top, and a plurality of clamp bodies are arranged at the top of the table top. The clamp body comprises a positioning assembly arranged in the positioning groove and a clamping assembly installed on the top of the positioning assembly. The positioning assembly comprises a sliding block slidably connected to the interior of the positioning groove, a first screw fixedly connected to the top of the sliding block, a threaded sleeve arranged on the top of the table top and in threaded connection with the first screw, and a top plate fixedly connected to the top of the first screw. The clamping assembly is installed on the top of the top plate. The clamping assembly comprises a mounting plate mounted at the top of the top plate, a third screw rotationally connected to the top of the mounting plate, and a movable plate in threaded connection to the outer side of the third screw. Through the structure, overall operation is more flexible, efficient and stable workpiece clamping is achieved, the clamping machining requirements of various workpieces are met, and practicability is high.

Description

Technical Field

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

[0002] In modern manufacturing, CNC machining centers are widely used for processing various complex parts. Fixtures are an indispensable tool in manufacturing, whose main function is to fix and position workpieces to ensure their stability and machining accuracy during the process.

[0003] In the prior art, a search revealed a Chinese patent disclosing "A CNC Machining Center Fixture," application number "202323200018.X." This patent mainly includes a machining table, a rotary table, a movable table, a clamping table, and rubber pads. The rotary table is connected to the top right side of the machining table, and the movable table is connected to the top left side. Clamping tables are connected to the inner sides of both the rotary table and the movable table, and rubber pads are attached to one side of each clamping table. While this utility model addresses the lack of effective workpiece flipping tools in existing CNC machining center fixtures by using a rotary table and a movable shaft that drives the clamping table to rotate under motor power, the simple clamping method with two clamping plates means that in practical use, the clamping plates can only be fixed to the sides of the workpiece and are not easily adjustable. For workpieces with regular shapes and flat surfaces, it can barely maintain clamping stability. When dealing with workpieces that are irregularly shaped, have uneven surfaces, or possess complex geometric features, the outer contour of the irregular workpiece cannot form a tight fit with the clamping plate, which may lead to uneven distribution of clamping force. This can cause the workpiece to wobble, shift, or even fall off during machining, thus affecting machining accuracy and product quality. Therefore, this utility model provides a CNC machining center fixture to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to provide a CNC machining center fixture that is more flexible in operation, so as to achieve efficient and stable workpiece clamping, adapt to the clamping and processing needs of various workpieces, and has strong practicality.

[0005] To achieve the above objectives, a CNC machining center fixture is provided, including a table, a circular positioning groove with a trapezoidal cross-section is provided inside the table and near the top, and a plurality of fixture bodies are provided on the top of the table;

[0006] The fixture body includes a positioning component disposed inside the positioning groove and a clamping component mounted on top of the positioning component;

[0007] The positioning assembly includes a slider slidably connected inside the positioning groove, a first screw fixedly connected to the top of the slider, a threaded sleeve disposed on the top of the platform and threadedly connected to the first screw, and a top plate fixedly connected to the top of the first screw. The clamping assembly is installed on the top of the top plate.

[0008] The clamping assembly includes a mounting plate installed on the top of the top plate, a third screw rotatably connected to the top of the mounting plate, a movable plate threaded to the outside of the third screw, a fourth screw threaded to the inside of the movable plate and perpendicular to the third screw, a first positioning plate rotatably connected to one end of the fourth screw, a fifth screw threaded to the first positioning plate and parallel to the third screw, and a second positioning plate rotatably connected to the bottom end of the fifth screw.

[0009] According to the CNC machining center fixture, the clamping assembly further includes a second screw inserted inside the mounting plate and a nut located on the top of the mounting plate and threadedly connected to the second screw, wherein the bottom end of the second screw is fixedly connected to the top of the top plate.

[0010] According to the CNC machining center fixture, the positioning component further includes two rotating handles, which are symmetrically and fixedly connected to the outside of the threaded sleeve.

[0011] According to the CNC machining center fixture, the clamping assembly further includes a first guide rod slidably connected inside the movable plate, a third guide rod slidably connected inside the movable plate and located above the fourth screw, and a second guide rod slidably connected inside the first positioning plate. The bottom end of the first guide rod is fixedly connected to the top of the mounting plate, the end of the third guide rod near the first positioning plate is fixedly connected to the first positioning plate, and the bottom end of the second guide rod is fixedly connected to the top of the second positioning plate.

[0012] According to the CNC machining center fixture, the top of the third screw, the end of the fourth screw away from the first positioning plate, and the top of the fifth screw are all fixedly connected with knobs.

[0013] According to the CNC machining center fixture, anti-slip pads are installed on the side of the first positioning plate away from the fourth screw and on the bottom of the second positioning plate.

[0014] This utility model has the following beneficial effects:

[0015] 1. Compared with the prior art, this CNC machining center fixture, by setting a positioning component that can move circumferentially on the table and cooperating with a third screw, a fourth screw, a fifth screw, a first positioning plate and a second positioning plate, allows the first positioning plate to freely adjust the clamping position, making the overall operation more flexible, so as to achieve efficient and stable workpiece clamping, adapt to the clamping and processing needs of various workpieces, and has strong practicality.

[0016] 2. Compared with the prior art, this CNC machining center fixture has a clamping component that is movably connected to the top plate through the cooperation of the mounting plate and the second screw. The clamping component can be easily disassembled and assembled, so as to increase or decrease the number of clamping components according to the clamping requirements of the workpiece, and to complete the clamping workpiece more simply and stably.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the overall structure of a CNC machining center fixture according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the table of a CNC machining center fixture according to the present invention;

[0021] Figure 3 This is a schematic diagram of the clamping component structure of a CNC machining center fixture according to the present invention;

[0022] Figure 4 This utility model relates to a fixture for a CNC machining center. Figure 2 Enlarged structural diagram at point A in the middle.

[0023] Legend:

[0024] 1. Tabletop; 2. Positioning groove; 3. Slider; 4. First screw; 5. Threaded sleeve; 6. Rotary handle; 7. Top plate; 8. Mounting plate; 9. Second screw; 10. Third screw; 11. First guide rod; 12. Movable plate; 13. Fourth screw; 14. First positioning plate; 15. Fifth screw; 16. Second positioning plate; 17. Second guide rod; 18. Anti-slip pad; 19. Third guide rod. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-4 This utility model provides a CNC machining center fixture, which includes a table 1, a circular positioning groove 2 with a trapezoidal cross-section on the inside of the table 1 and near the top, and multiple fixture bodies on the top of the table 1.

[0027] The fixture body includes a positioning component located inside the positioning groove 2 and a clamping component mounted on top of the positioning component. The clamping component includes a mounting plate 8 mounted on top of top plate 7, a third screw 10 rotatably connected to the top of mounting plate 8, a movable plate 12 threadedly connected to the outside of the third screw 10, a fourth screw 13 threadedly connected to the inside of movable plate 12 and perpendicular to the third screw 10, a first positioning plate 14 rotatably connected to one end of the fourth screw 13, a fifth screw 15 threadedly connected to the first positioning plate 14 and parallel to the third screw 10, and a second positioning plate 16 rotatably connected to the bottom of the fifth screw 15. A knob is fixedly connected to the top of the third screw 10, the end of the fourth screw 13 away from the first positioning plate 14, and the top of the fifth screw 15.

[0028] The workpiece to be clamped is placed on the table 1. The first positioning plate 14 serves as the main clamp. Rotating the fourth screw 13 adjusts the distance between the first positioning plate 14 and the workpiece, while rotating the third screw 10 adjusts the vertical position of the movable plate 12, facilitating the adjustment of the height of the first positioning plate 14. A second positioning plate 16 is also provided as a secondary clamp. Rotating the fifth screw 15 adjusts the height of the second positioning plate 16 to clamp the workpiece, improving clamping stability and allowing for precise workpiece clamping by using the second positioning plate 16 to achieve the desired pressing effect. The overall operation is more flexible, allowing the first positioning plate 14 to freely adjust its clamping position for efficient and stable workpiece clamping, adapting to various workpiece clamping and processing needs, and demonstrating strong practicality.

[0029] The positioning assembly includes a slider 3 slidably connected inside the positioning groove 2, a first screw 4 fixedly connected to the top of the slider 3, a threaded sleeve 5 located on the top of the platform 1 and threadedly connected to the first screw 4, a top plate 7 fixedly connected to the top of the first screw 4, a second screw 9 inserted inside the mounting plate 8, a nut located on the top of the mounting plate 8 and threadedly connected to the second screw 9, and two handles 6. The clamping assembly is installed on the top of the top plate 7, the bottom end of the second screw 9 is fixedly connected to the top of the top plate 7, and the handles 6 are symmetrically fixedly connected to the outside of the threaded sleeve 5.

[0030] After the clamping assembly moves to the clamping position, the operating handle 6 drives the threaded sleeve 5 to rotate. The rotation of the threaded sleeve 5 causes the first screw 4 and the bottom slider 3 to move upwards, ensuring the slider 3 stably engages with the surface of the positioning groove 2. This fixes the clamping assembly, ensuring stability during clamping and facilitating adjustment of its horizontal position. The operation is simple. Furthermore, the clamping assembly is movably connected to the top plate 7 via the mounting plate 8 and the second screw 9, allowing for easy assembly and disassembly. This enables the number of clamping components to be increased or decreased according to workpiece clamping requirements, resulting in simpler and more stable workpiece clamping.

[0031] The clamping assembly also includes a first guide rod 11 slidably connected inside the movable plate 12, a third guide rod 19 slidably connected inside the movable plate 12 and located above the fourth screw 13, and a second guide rod 17 slidably connected inside the first positioning plate 14. The bottom end of the first guide rod 11 is fixedly connected to the top of the mounting plate 8, the end of the third guide rod 19 near the first positioning plate 14 is fixedly connected to the first positioning plate 14, and the bottom end of the second guide rod 17 is fixedly connected to the top of the second positioning plate 16.

[0032] The arrangement of the first guide rod 11, the second guide rod 17 and the third guide rod 19 can effectively guide the stable movement of the movable plate 12, the second positioning plate 16 and the first positioning plate 14, and ensure the coordinated cooperation of each component during the clamping process.

[0033] Anti-slip pads 18 are installed on the side of the first positioning plate 14 away from the fourth screw 13 and the bottom of the second positioning plate 16. The anti-slip pads 18 can effectively prevent the workpiece from sliding or being damaged during the clamping process, thereby further improving the practicality and reliability of the fixture.

[0034] Working principle: The workpiece to be clamped is placed on the table 1. The first positioning plate 14 acts as the main clamp, and the entire clamping assembly moves according to the clamping position. After the first positioning plate 14 moves to the clamping position, the operating handle 6 drives the threaded sleeve 5 to rotate. The rotation of the threaded sleeve 5 causes the first screw 4 and the bottom slider 3 to move upward, and makes the slider 3 stably fit against the surface of the positioning groove 2, thus fixing the clamping assembly to ensure stability during clamping, facilitating adjustment of the horizontal position of the clamping assembly, and simplifying operation.

[0035] Then, rotating the fourth screw 13 adjusts the distance between the first positioning plate 14 and the workpiece, while rotating the third screw 10 adjusts the vertical position of the movable plate 12, facilitating the adjustment of the height of the first positioning plate 14. A second positioning plate 16 is also provided as a secondary clamp; rotating the fifth screw 15 adjusts the height of the second positioning plate 16 to clamp the workpiece, improving clamping stability and allowing the second positioning plate 16 to achieve a pressing effect on the workpiece according to its clamping requirements. The overall operation is more flexible, allowing the first positioning plate 14 to freely adjust its clamping position for efficient and stable workpiece clamping, adapting to various workpiece clamping and processing needs, and demonstrating strong practicality.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A fixture for a CNC machining center, characterized in that, Includes a tabletop (1), and a circular positioning groove (2) with a trapezoidal cross-section is provided inside the tabletop (1) and on the side near the top. The top of the tabletop (1) is provided with multiple clamp bodies. The fixture body includes a positioning component disposed inside the positioning groove (2) and a clamping component installed on the top of the positioning component; The positioning assembly includes a slider (3) slidably connected inside the positioning groove (2), a first screw (4) fixedly connected to the top of the slider (3), a threaded sleeve (5) provided on the top of the table (1) and threadedly connected to the first screw (4), and a top plate (7) fixedly connected to the top of the first screw (4). The clamping assembly is installed on the top of the top plate (7). The clamping assembly includes a mounting plate (8) mounted on the top of the top plate (7), a third screw (10) rotatably connected to the top of the mounting plate (8), a movable plate (12) threaded to the outside of the third screw (10), a fourth screw (13) threaded to the inside of the movable plate (12) and perpendicular to the third screw (10), a first positioning plate (14) rotatably connected to one end of the fourth screw (13), a fifth screw (15) threaded to the first positioning plate (14) and parallel to the third screw (10), and a second positioning plate (16) rotatably connected to the bottom end of the fifth screw (15).

2. The CNC machining center fixture according to claim 1, characterized in that, The clamping assembly also includes a second screw (9) inserted inside the mounting plate (8) and a nut located on the top of the mounting plate (8) and threadedly connected to the second screw (9), wherein the bottom end of the second screw (9) is fixedly connected to the top of the top plate (7).

3. A CNC machining center fixture according to claim 2, characterized in that, The positioning assembly also includes two rotating handles (6), which are symmetrically fixed to the outside of the threaded sleeve (5).

4. A CNC machining center fixture according to claim 3, characterized in that, The clamping assembly further includes a first guide rod (11) slidably connected inside the movable plate (12), a third guide rod (19) slidably connected inside the movable plate (12) and located above the fourth screw (13), and a second guide rod (17) slidably connected inside the first positioning plate (14). The bottom end of the first guide rod (11) is fixedly connected to the top of the mounting plate (8), the end of the third guide rod (19) near the first positioning plate (14) is fixedly connected to the first positioning plate (14), and the bottom end of the second guide rod (17) is fixedly connected to the top of the second positioning plate (16).

5. A CNC machining center fixture according to claim 4, characterized in that, A knob is fixedly connected to the top of the third screw (10), the end of the fourth screw (13) away from the first positioning plate (14), and the top of the fifth screw (15).

6. A CNC machining center fixture according to claim 5, characterized in that, Anti-slip pads (18) are installed on the side of the first positioning plate (14) away from the fourth screw (13) and the bottom of the second positioning plate (16).

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