A multi-directional locking tooling fixture for a CNC machining center

Abstract

The application discloses a multi-direction locking type tooling fixture for a numerical control machining center, which comprises a cabinet containing a platform plate, a clamp assembly is arranged on the platform plate, each clamp assembly contains two groups of linear motors, one group of linear guide rod modules, one group of rotary cylinders and one group of clamp carriages, the two groups of linear motors are arranged in parallel, the linear motor contains a first moving carriage, a bearing assembly is arranged on the first moving carriage, a limiting track is arranged on the lower surface of the linear guide rod module, the limiting track is in limiting sliding connection with one of the bearing assemblies, the linear guide rod module contains a second moving carriage, the rotary cylinder is fixedly installed on the second moving carriage, the rotary cylinder is in driving connection with the clamp carriage, and the clamp main body is installed on the clamp carriage. The linear guide rod module is driven by the two groups of linear motors, the linkage control of the rotary cylinder is combined, multi-dimensional accurate positioning of the clamp main body in the horizontal, vertical and rotary directions is realized, and the adaptability to special-shaped workpieces is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of tooling and fixture technology, specifically a multi-directional locking tooling and fixture for CNC machining centers. Background Technology

[0002] In the field of CNC machining, the positioning accuracy, flexibility, and stability of tooling fixtures directly affect machining efficiency and workpiece quality. Traditional fixtures mostly adopt unidirectional mechanical locking structures, which suffer from low adjustment freedom and poor adaptability, making it difficult to meet the machining needs of irregularly shaped workpieces or multi-angle machining. Some existing technologies attempt to improve flexibility by adding drive modules or rotating mechanisms, but these generally suffer from problems such as complex structures, poor positioning repeatability, and cable interference.

[0003] Therefore, we propose a multi-directional locking fixture for CNC machining centers to solve the problems mentioned above. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-directional locking tooling fixture for CNC machining centers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-directional locking tooling fixture for a CNC machining center, comprising: a cabinet, the cabinet including a platform plate, and a fixture assembly disposed on the platform plate;

[0006] The clamping assembly comprises at least two sets, each set of clamping assemblies comprising two sets of linear motors, one set of linear lead screw modules, one set of rotary cylinders, and one set of clamping platform;

[0007] Two sets of linear motors are arranged in parallel. Each linear motor includes a first movable platform. A bearing assembly is provided on the first movable platform. The linear screw module is movably connected to the two sets of first movable platforms through two bearing assemblies. A limit track is provided on the lower surface of the linear screw module. The limit track is slidably connected to one of the bearing assemblies.

[0008] The linear screw module includes a second movable platform, on which a rotary cylinder is fixedly installed. The rotary cylinder drives a connected clamping platform, on which a clamping body is installed. The clamping body includes two types of clamps.

[0009] Preferably, the platform plate is provided with a through hole, a rotating lifting platform is provided in the through hole, a CNC mechanism is installed at the edge of the platform plate, and electrical components are provided in the cabinet. The CNC mechanism controls the fixture assembly by controlling the electrical components.

[0010] Preferably, the clamping assembly is provided in four groups, and the four groups of clamping assemblies are distributed in a square or rhombus shape.

[0011] Preferably, the clamping assembly is provided in three sets, and the three sets of clamping assemblies are distributed in an equilateral triangle.

[0012] Preferably, the upper surface of the bearing assembly is provided with a plurality of balls, which are in rolling connection with the lower surface of the linear screw module.

[0013] Preferably, the rotary cylinder is designed with a rotary output end, which is fixedly connected to a fixture platform. A connector is installed on the lower surface of the fixture platform, and the connector is fixedly connected to the rotary output end of the rotary cylinder.

[0014] Preferably, the lower surface of the fixture platform is provided with two sliding conductive terminals, and the upper surface of the rotary cylinder is fixedly installed with an annular conductive slide rail. The annular conductive slide rail has two grooves, and an annular conductive sheet is provided in the groove. The sliding conductive terminals are inserted into the annular conductive slide rail and are slidably conductively connected with the annular conductive sheet.

[0015] Preferably, two magnetic plates are fixedly arranged on the upper surface of the fixture platform, the fixture body includes a fixture support plate, two iron plates are correspondingly arranged on the lower surface of the fixture support plate, the magnetic plates and iron plates are magnetically connected, two conductive limit holes are also opened on the upper surface of the fixture platform, two conductive plugs are correspondingly arranged on the lower surface of the fixture support plate, the conductive plugs are inserted into the conductive limit holes, and the conductive limit holes are conductively connected to the sliding conductive terminals.

[0016] Preferably, a servo motor is fixedly installed on the upper surface of the clamp support plate, the servo motor drives the lead screw, a slider is threaded on the lead screw, the slider is slidably connected to two cylindrical slide rails, a first connecting rod is fixedly installed on the slider, and a first pressure head is fixedly installed at the front end of the first connecting rod.

[0017] Preferably, the slider is fixedly connected to two second connecting rods, which are arranged in the opposite direction to the first connecting rod. The front ends of the two second connecting rods are fixedly connected to a limiting connecting rod. The end of the clamp support plate near the limiting connecting rod is rotatably connected to a rotating bracket. A limiting strip hole is opened on the side of the rotating bracket. The two ends of the limiting connecting rod are slidably connected to the limiting strip hole. A third connecting rod is fixedly installed on the upper end of the rotating bracket, and a second pressure head is fixedly installed on the front end of the third connecting rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. Multi-degree-of-freedom coordinated adjustment: By driving linear screw modules with two sets of linear motors and combining them with the linkage control of rotary cylinders, the fixture body is accurately positioned in the horizontal, vertical and rotational directions, which significantly improves its adaptability to irregular workpieces.

[0020] 2. High stability and precision: The design of the limit track and ball bearing assembly ensures the smooth movement of the linear screw module when the angle changes; the dual fixing mechanism of conductive limit socket and magnetic plate enhances the connection strength between the fixture body and the platform, avoiding deviation caused by processing vibration.

[0021] 3. Quick switching and automation: The magnetic plate and iron sheet adsorption combined with the conductive plug connection structure support one-click quick replacement of the fixture body; the rotary cylinder drives the fixture platform to rotate 180°, which can seamlessly switch between two clamping methods and reduce downtime.

[0022] 4. Low interference and high reliability: The design of the ring-shaped conductive slide rail and sliding conductive terminal replaces the traditional open wire connection and avoids cable tangling; multiple sets of clamps are distributed in a square or rhombus shape, which can work together to apply force and achieve all-round locking of the workpiece, avoiding local stress concentration.

[0023] 5. High scalability: The number (three or four sets) and distribution of the fixture components can be flexibly configured according to processing requirements, and it is suitable for workpieces of different sizes and shapes, with high compatibility. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a side-view of the platform plate in this invention;

[0026] Figure 3 This is a schematic diagram of the fixture assembly in this invention;

[0027] Figure 4 In this invention Figure 3 Enlarged view of point A;

[0028] Figure 5 This is a side view of the bearing assembly and linear lead screw module in this invention;

[0029] Figure 6 This is a schematic diagram of the clamp assembly after angle adjustment in this invention;

[0030] Figure 7 In this invention Figure 6 Enlarged view of point B;

[0031] Figure 8 This is a schematic diagram of the main body of the clamp in this invention;

[0032] Figure 9 This is a disassembly diagram of the fixture platform and fixture support plate in this invention;

[0033] Figure 10 This is a side cross-sectional view of the annular conductive slide rail in this invention.

[0034] In the diagram: 1. Cabinet; 11. Platform plate; 12. Through hole; 2. CNC mechanism; 3. Rotary lifting platform; 4. Fixture assembly; 41. Linear motor; 411. First moving platform; 412. Bearing assembly; 4121. Ball bearing; 42. Linear screw module; 422. Second moving platform; 421. Limiting rail; 43. Rotary cylinder; 431. Rotary output end; 45. Fixture body; 451. Fixture support plate; 4511. Iron sheet; 4512. Conductive plug; 4 52. Servo motor; 453. Lead screw; 454. Slider; 455. First connecting rod; 4551. First pressure head; 456. Limiting connecting rod; 457. Second connecting rod; 458. Rotating bracket; 4581. Limiting strip hole; 459. Third connecting rod; 4591. Second pressure head; 46. Fixture platform; 461. Connector; 462. Conductive limiting socket; 463. Magnetic suction plate; 464. Sliding conductive terminal; 465. Annular conductive slide rail; 466. Annular conductive sheet. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-10 The present invention provides a technical solution: a multi-directional locking tooling fixture for a CNC machining center, comprising: a cabinet 1, the cabinet 1 including a platform plate 11, a through hole 12 provided on the platform plate 11, a rotating lifting platform 3 provided in the through hole 12 for carrying products and lifting and rotating the products, a CNC mechanism 2 installed at the edge of the platform plate 11, an electrical component provided inside the cabinet 1, a fixture assembly 4 provided on the platform plate 11, and the CNC mechanism 2 controlling the fixture assembly 4 by controlling the electrical component.

[0037] The clamping assembly 4 includes at least two sets. In this embodiment, four sets of clamping assemblies 4 are provided. The four sets of clamping assemblies 4 are arranged in a square or rhomboid shape and are assembled according to requirements.

[0038] Each fixture assembly 4 includes two linear motors 41, one linear lead screw module 42, one rotary cylinder 43, and one fixture platform 46.

[0039] Two sets of linear motors 41 are arranged in parallel. Each linear motor 41 includes a first moving platform 411. The linear motor 41 drives the first moving platform 411 to move linearly. A bearing assembly 412 is provided on the first moving platform 411. The linear screw module 42 is movably connected to the two sets of first moving platforms 411 through two bearing assemblies 412 respectively. By moving the two first moving platforms 411, the linear screw module 42 can be at different angles. A limiting track 421 is provided on the lower surface of the linear screw module 42. The limiting track 421 is slidably connected to one of the bearing assemblies 412. Several balls 4121 are provided on the upper surface of the bearing assembly 412. The balls 4121 are rollingly connected to the lower surface of the linear screw module 42. Through the cooperation of the limiting track 421 and one of the bearing assemblies 412, the linear screw module 42 can be more stable and precise when changing angles.

[0040] The linear screw module 42 includes a second movable platform 422. The linear screw module 42 drives the second movable platform 422 to move linearly. A rotary cylinder 43 is fixedly installed on the second movable platform 422. The rotary cylinder 43 is designed with a rotary output end 431. The rotary output end 431 is fixedly connected to the fixture platform 46. A fixture body 45 is installed on the fixture platform 46.

[0041] The angle of the linear screw module 42 is adjusted so that the fixture body 45 faces different directions. The direction of the fixture body 45 is further adjusted by the rotary cylinder 43. Two types of fixtures are set on the fixture body 45. The rotary cylinder 43 can also drive the fixture body 45 to rotate 180° to switch between the two types of fixtures.

[0042] A connector 461 is installed on the lower surface of the fixture platform 46. The connector 461 is fixedly connected to the rotation output end 431 of the rotary cylinder 43, so as to realize the rotation drive of the rotary cylinder 43 on the fixture platform 46.

[0043] Two sliding conductive terminals 464 are provided on the lower surface of the fixture platform 46, and an annular conductive slide rail 465 is fixedly installed on the upper surface of the rotary cylinder 43. The annular conductive slide rail 465 has two grooves, and annular conductive plates 466 are provided in the grooves. The sliding conductive terminals 464 are inserted into the annular conductive slide rail 465 and are slidably conductively connected with the annular conductive plates 466, so that the fixture platform 46 maintains a conductive state during rotation, reducing the use of exposed wires.

[0044] Two magnetic plates 463 are fixedly installed on the upper surface of the fixture platform 46. The fixture body 45 includes a fixture support plate 451. Two iron plates 4511 are correspondingly installed on the lower surface of the fixture support plate 451. The magnetic plates 463 and the iron plates 4511 are magnetically connected. When the fixture support plate 451 and the fixture platform 46 are assembled, they are magnetically connected by the magnetic plates 463 and the iron plates 4511.

[0045] Two conductive limiting holes 462 are also provided on the upper surface of the fixture platform 46, and two conductive plugs 4512 are correspondingly provided on the lower surface of the fixture support plate 451. The conductive plugs 4512 are inserted into the conductive limiting holes 462, so that the fixture support plate 451 and the fixture platform 46 are relatively limited and fixed after assembly. With the magnetic suction plate 463 and the iron sheet 4511, they are magnetically connected to achieve quick assembly of the fixture support plate 451 and the fixture platform 46, which facilitates the replacement of different fixture bodies 45.

[0046] The conductive limiting socket 462 is electrically connected to the sliding conductive terminal 464, which not only achieves the function of limiting and fixing, but also achieves the conductive connection between the fixture body 45 and the fixture platform 46.

[0047] A servo motor 452 is fixedly installed on the upper surface of the clamp support plate 451. The servo motor 452 drives the connecting screw 453. A slider 454 is threaded onto the screw 453. The slider 454 is slidably connected to two cylindrical slide rails. The servo motor 452 drives the screw 453 to rotate, causing the slider 454 to move linearly along the cylindrical slide rails. A first connecting rod 455 is fixedly installed on the slider 454. A first pressure head 4551 is fixedly installed at the front end of the first connecting rod 455. When the slider 454 moves linearly, it drives the first connecting rod 455 to push out linearly, causing the first pressure head 4551 to press against the side of the product. Through the cooperation of multiple clamping components 4, the product is fixed in multiple directions.

[0048] The slider 454 is fixedly connected to two second connecting rods 457, which are arranged opposite to the first connecting rod 455. The front ends of the two second connecting rods 457 are fixedly connected to the limiting connecting rods 456. The end of the clamp support plate 451 near the limiting connecting rods 456 is rotatably connected to the rotating bracket 458. The rotating bracket 458 has a limiting strip hole 4581 on its side. The two ends of the limiting connecting rod 456 are slidably connected to the limiting strip hole 4581. The upper end of the rotating bracket 458 is fixedly installed with a third connecting rod 459. The front end of the third connecting rod 459 is fixedly installed with a second pressure head 4591. When the slider 454 moves, it drives the second connecting rods 457 to push out. The second connecting rods 457 push the rotating bracket 458 to rotate through the limiting connecting rods 456, so that the third connecting rod 459 drives the second pressure head 4591 to rotate downward and press the product. Through the action of multiple clamping components 4, multiple second pressure heads 4591 press the product downward and complete the product positioning.

[0049] Working principle: Each clamp assembly 4 is driven by two linear motors 41, which cause the linear screw module 42 to drive the clamp body 45 to a specified angle. Multiple clamp bodies 45 can be adjusted independently to adapt to products of different shapes, especially irregularly shaped products.

[0050] The clamp body 45 is driven to approach the product by the linear screw module 42, and the clamp body 45 is driven to rotate by the rotary cylinder 43, so as to further adjust the angle of the clamp body 45 to meet the adaptability requirements.

[0051] The clamp body 45 controls two clamps simultaneously through a single lead screw assembly, and then switches between them through a rotary cylinder 43, satisfying multi-directional locking and clamping of products by pressing down and pressing up, making the product clamping more stable and applicable to a wider range of applications.

[0052] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-directional locking fixture for CNC machining centers, comprising: A cabinet (1) includes a platform plate (11) on which a clamping assembly (4) is provided. The feature is that the clamp assembly (4) comprises at least two sets, and each clamp assembly (4) comprises two sets of linear motors (41), one set of linear lead screw modules (42), one set of rotary cylinders (43), and one set of clamp platform (46); Two sets of linear motors (41) are arranged in parallel. Each linear motor (41) includes a first movable platform (411). A bearing assembly (412) is provided on the first movable platform (411). The linear screw module (42) is movably connected to the two sets of first movable platforms (411) through two bearing assemblies (412). A limit track (421) is provided on the lower surface of the linear screw module (42). The limit track (421) is limited and slidably connected to one of the bearing assemblies (412). The linear screw module (42) includes a second movable platform (422), on which a rotary cylinder (43) is fixedly installed. The rotary cylinder (43) drives a connected clamp platform (46). A clamp body (45) is installed on the clamp platform (46). The clamp body (45) includes two types of clamps. The rotary cylinder (43) is designed with a rotary output end (431), which is fixedly connected to the fixture platform (46). A connector (461) is installed on the lower surface of the fixture platform (46), and the connector (461) is fixedly connected to the rotary output end (431) of the rotary cylinder (43). Two sliding conductive terminals (464) are provided on the lower surface of the fixture platform (46), and an annular conductive slide rail (465) is fixedly installed on the upper surface of the rotary cylinder (43). The annular conductive slide rail (465) has two sliding grooves, and an annular conductive sheet (466) is provided in the sliding groove. The sliding conductive terminal (464) is inserted into the annular conductive slide rail (465) and is slidably conductively connected with the annular conductive sheet (466). Two magnetic plates (463) are fixedly installed on the upper surface of the fixture platform (46). The fixture body (45) includes a fixture support plate (451). Two iron plates (4511) are correspondingly installed on the lower surface of the fixture support plate (451). The magnetic plates (463) and the iron plates (4511) are magnetically connected. Two conductive limit sockets (462) are also opened on the upper surface of the fixture platform (46). Two conductive plugs (4512) are correspondingly installed on the lower surface of the fixture support plate (451). The conductive plugs (4512) are inserted into the conductive limit sockets (462). The conductive limit sockets (462) are conductively connected to the sliding conductive terminal (464).

2. A multi-directional locking fixture for a CNC machining center according to claim 1, characterized in that, The platform plate (11) is provided with a through hole (12), and a rotating lifting platform (3) is provided in the through hole (12). A CNC mechanism (2) is installed at the edge of the platform plate (11). An electrical component is provided in the cabinet (1). The CNC mechanism (2) controls the fixture component (4) by controlling the electrical component.

3. A multi-directional locking fixture for a CNC machining center according to claim 1, characterized in that, The clamping assembly (4) is provided in four groups, and the four groups of clamping assemblies (4) are distributed in a square or rhombus shape.

4. A multi-directional locking fixture for a CNC machining center according to claim 1, characterized in that, The clamping assembly (4) may be provided in three sets, with the three sets of clamping assemblies (4) arranged in an equilateral triangle.

5. A multi-directional locking fixture for a CNC machining center according to claim 1, characterized in that, The upper surface of the bearing assembly (412) is provided with a plurality of balls (4121), which are in rolling connection with the lower surface of the linear screw module (42).

6. A multi-directional locking fixture for a CNC machining center according to claim 1, characterized in that, A servo motor (452) is fixedly installed on the upper surface of the clamp support plate (451). The servo motor (452) drives the connecting screw (453). A slider (454) is threaded on the screw (453). The slider (454) is slidably connected to two cylindrical slide rails. A first connecting rod (455) is fixedly installed on the slider (454). A first pressure head (4551) is fixedly installed at the front end of the first connecting rod (455).

7. A multi-directional locking fixture for a CNC machining center according to claim 6, characterized in that, The slider (454) is fixedly connected to two second connecting rods (457). The second connecting rods (457) are set opposite to the first connecting rod (455). The front ends of the two second connecting rods (457) are fixedly connected to the limiting connecting rods (456). The end of the clamp support plate (451) near the limiting connecting rods (456) is rotatably connected to the rotating bracket (458). The rotating bracket (458) has a limiting strip hole (4581) on its side. The two ends of the limiting connecting rod (456) are slidably connected to the limiting strip hole (4581). The upper end of the rotating bracket (458) is fixedly installed with a third connecting rod (459). The front end of the third connecting rod (459) is fixedly installed with a second pressure head (4591).

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