4.5-axis CNC machining clamping mechanism and CNC equipment

Abstract

The utility model relates to a kind of 4.5 axle CNC machining clamping mechanisms and CNC equipment.It solves the technical problem of unreasonable design of existing clamping mechanism.The 4.5 axle CNC machining clamping mechanism includes: locating seat, upper end is provided with protruding adsorption platform, the side edge of the locating seat close to adsorption platform is provided with product locating retaining wall, the other three side edges of the locating seat close to adsorption platform and away from locating retaining wall are provided with product outer positioning pin;Clamping assembly, including several interval settings and protruding settings in the extension protruding portion of the circumferential outer wall of the locating seat, the extension protruding portion is hingedly connected with rotating block, the upper end of the rotating block is provided with the pressure claw part that can be rotatably held on the upper end of adsorption platform edge, the bottom of the locating seat is provided with rotating driver for driving the rotating block.This 4.5 axle CNC machining clamping mechanism improves positioning accuracy, effectively reduces the risk of appearance damage of product, and improves space utilization.

Description

Technical Field

[0001] This utility model belongs to the field of tooling and fixtures, and relates to a 4.5-axis CNC machining clamping mechanism and CNC equipment. Background Technology

[0002] For example, Chinese patent literature discloses a 4.5-axis fixture [202121344821.9], which includes a vertically connected rotating shaft and a flipping shaft. A processing table is connected to the output end of the rotating shaft. A positioning plate is provided on the top surface of the processing table, and a hydraulic cylinder is provided on the bottom surface of the processing table. The hydraulic cylinder is connected to a fixed seat, and a connecting rod is provided on the surface of the fixed seat. A first moving frame and a second moving frame are rotatably connected to the connecting rod. A fixture body is hinged to one side of both the first moving frame and the second moving frame. A sliding device is provided between the fixture body and the processing table. The sliding device slides horizontally toward the center of the processing table. A guide post is horizontally provided on the side of the processing table. The guide post passes through the fixture body and is connected to a first limiting block.

[0003] The drawbacks of the above technical solution are: low overall space utilization, numerous structures on the upper part of the processing table, inability to meet the multi-angle processing requirements of new products, inconvenience in picking up and placing, and easy damage to the surface of the workpiece. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a 4.5-axis CNC machining clamping mechanism and CNC equipment.

[0005] The objective of this utility model can be achieved through the following technical solutions: The 4.5-axis CNC machining clamping mechanism includes: The positioning seat has a protruding adsorption platform at the top. The positioning seat has a product positioning barrier on one edge near the adsorption platform and external product positioning pins on the other three edges of the positioning seat that are near the adsorption platform and far away from the positioning barrier. The clamping assembly includes several spaced-apart extended protrusions that protrude from the outer circumferential wall of the positioning seat. Each extended protrusion is hinged to a rotating block. The upper end of each rotating block is provided with a pressure claw that can rotatably press against the upper edge of the adsorption platform. The bottom of the positioning seat is provided with a rotation driver that drives the rotating blocks.

[0006] Furthermore, the positioning seat includes a positioning carrier plate disposed at the upper end and a positioning base plate connected to the bottom of the positioning carrier plate.

[0007] Furthermore, a vacuum chamber is provided between the positioning carrier plate and the positioning base plate, and a vacuum suction hole connected to the vacuum chamber is provided on the adsorption platform.

[0008] Furthermore, the adsorption platform is provided with an adsorption groove that can connect to the upper ends of at least two vacuum suction holes.

[0009] Furthermore, the upper end of the adsorption platform is provided with a recessed annular groove near the edge of the adsorption platform.

[0010] Furthermore, the bottom of the positioning base plate is provided with a mounting groove for the extension protrusion to be inserted and installed.

[0011] Furthermore, the end of the pressure claw portion away from the rotating block is provided with a protruding pressure claw insert.

[0012] Furthermore, the bottom of the positioning seat is provided with a mounting seat, the mounting seat includes a flange, a concentric shaft is embedded in the center of the flange, and the bottom of the positioning seat and the flange are connected by equal height blocks set at intervals.

[0013] Furthermore, the positioning seat has recessed pick-and-place notches on both sides.

[0014] This utility model also provides a CNC equipment having the 4.5-axis CNC machining clamping mechanism as described above.

[0015] Compared with existing technologies, this 4.5-axis CNC machining clamping mechanism improves positioning accuracy through a combination of multi-directional positioning methods, while effectively reducing the risk of product appearance damage and improving product yield. Moreover, the clamping components use levers to install most of the structure on the side and bottom of the positioning seat, improving space utilization, freeing up the space occupied on the upper part of the positioning seat, and meeting the multi-angle machining process of new products. Attached Figure Description

[0016] Figure 1 A schematic diagram of a 4.5-axis CNC machining clamping mechanism provided by this utility model.

[0017] Figure 2 for Figure 1 A cross-sectional schematic diagram of the 4.5-axis CNC machining clamping mechanism.

[0018] Figure 3 for Figure 1 A schematic diagram of the bottom surface of the 4.5-axis CNC machining clamping mechanism.

[0019] Figure 4 for Figure 1 A schematic diagram of the clamping state of the 4.5-axis CNC machining clamping mechanism.

[0020] In the diagram, 10 is the positioning seat; 11 is the positioning carrier plate; 111 is the pick-and-place notch; 12 is the positioning base plate; 13 is the adsorption platform; 14 is the product positioning retaining wall; 15 is the product external positioning pin; 16 is the vacuum chamber; 17 is the vacuum suction hole; 171 is the adsorption groove; 18 is the annular groove; 19 is the mounting groove; 20 is the clamping assembly; 21 is the extension protrusion; 22 is the rotating block; 23 is the pressure claw part; 24 is the rotation driver; 25 is the pressure claw insert; 30 is the mounting seat; 31 is the flange; 32 is the concentric shaft; and 33 is the level block. Detailed Implementation

[0021] Example 1, please refer to Figures 1 to 4 This is a schematic diagram of a 4.5-axis CNC machining clamping mechanism and CNC equipment provided by this utility model. The 4.5-axis CNC machining clamping mechanism includes a positioning base 10, a clamping component 20 disposed on the positioning base 10, a mounting base 30, etc. It is conceivable that this 4.5-axis CNC machining clamping mechanism also includes other functional components and specific structures, such as electrical connection components, mounting structures, etc., which are all technologies known to those skilled in the art, and therefore will not be described in detail here.

[0022] In this embodiment, the positioning base 10 includes a positioning carrier plate 11 disposed at the upper end and a positioning base plate 12 connected to the bottom of the positioning carrier plate 11. The positioning carrier plate 11 and the positioning base plate 12 are detachably connected by a threaded connection or a snap-fit ​​connection, facilitating the replacement of the positioning carrier plate 11 and the positioning settings for different products. Specifically, the positioning carrier plate 11 is in direct contact with the product and is made of aluminum AL6061 with a black anodized surface, making it easy to observe foreign objects and remove them from the carrier plate surface. The positioning base plate 12 is made of steel P20, increasing the overall rigidity of the equipment and preventing deformation of the carrier plate under stress. When the positioning carrier plate 11 and the positioning base plate 12 are connected, a vacuum chamber 16 is formed in the middle. The positioning carrier plate 11 has a vacuum suction hole 17 connected to the vacuum chamber 16, forming an adsorption platform 13 protruding from the upper surface, which forms a Z-axis positioning at the bottom of the product. The vacuum chamber 16 is connected to an external cylinder through a vacuum pipe connector to provide adsorption power to the adsorption platform 13, and is connected to a machine vacuum negative pressure gauge to monitor the vacuum negative pressure value of the equipment. The adsorption platform 13 is provided with an adsorption groove 171 that connects to the upper end of at least two vacuum suction holes 17. The adsorption groove 171 can locally increase the adsorption area of ​​the product and improve the adsorption stability.

[0023] Optimally, a recessed annular groove 18 is provided at the upper end of the adsorption platform 13 near its edge. The size of the product is close to the size of the adsorption platform 13, but slightly larger. When the product processing is completed, the bottom adsorption of the product needs to be stopped first. Furthermore, when manually or with an industrial robotic arm, the structure of the annular groove 18 facilitates the release of pressure at the annular edge after the product is partially lifted, improving the smoothness of material handling. Additionally, recessed pick-and-place notches 111 are provided on both sides of the positioning seat 10, allowing the product to partially protrude beyond the pick-and-place notches 111 when placed on the adsorption platform 13, facilitating the insertion of fingers or clamping fixtures during material handling.

[0024] In this embodiment, the positioning seat 10 has a product positioning baffle 14 on one edge near the adsorption platform 13, and external product positioning pins 15 on the other three edges of the positioning seat 10 that are near the adsorption platform 13 and away from the positioning baffle. When positioning the product, one side of the product is first placed against the product positioning baffle 14 as a positioning reference, and then gradually adjusted to fall into the range of the external product positioning pins 15. The product positioning baffle 14 and the external product positioning pins 15 are used to position the product in the horizontal circumferential direction. ABS plastic protection is added to the surface of the product positioning baffle 14, and the external product positioning pins 15 are made of ABS plastic to prevent damage to the product when picking it up or putting it down.

[0025] In this embodiment, the clamping assembly 20 has multiple sets, which are distributed on the four sides of the positioning seat 10 or on the three outer walls near the outer positioning pin 15 of the product according to the material picking and placing method. This allows the product positioning barrier 14 side to be used as the manual picking point when picking up materials, reducing interference between picking up materials and clamping assembly 20 and preventing damage to the product when picking up or placing the product.

[0026] Specifically, the clamping assembly 20 includes several spaced-apart protrusions 21 extending outwards from the circumference of the positioning base 10. Each protrusion 21 is an independent block structure. A mounting groove 19 is provided at the bottom of the positioning base plate 12 for the protrusions 21 to be embedded in, ensuring accurate installation. The protrusions 21 provide outwardly protruding hinge points for the positioning base 10, facilitating replacement and adjustment of the clamping assembly 20. A rotating block 22 is hinged to each protrusion 21. The rotating block 22 is connected to the protrusion 21 via a pivot. The rotating block 22 has a frame structure, improving rotational stability. A pressure claw 23 is provided at the upper end of the rotating block 22, capable of rotatably pressing against the upper edge of the adsorption platform 13. The pressure claw 23 is arc-shaped or L-shaped, reducing the rotation angle of the rotating block 22. The outer side of the pressure claw 23 is covered with soft rubber to prevent collision damage. A rotary driver 24, which drives the rotating block 22, is provided at the bottom of the positioning base 10. The rotary driver 24 is a cylinder connected to the end of the rotating block 22 away from the pressure claw 23, driving the rotating block 22 to rotate the pressure claw 23. The rotary driver 24 is located at the bottom of the extension protrusion 21. The compact structure facilitates the assembly and adjustment of the clamping assembly 20 and helps maintain consistency among multiple clamping assemblies 20. The clamping assembly 20 uses levers to mount most of the structure on the side and bottom of the positioning base 10, improving space utilization, freeing up the space occupied at the top of the positioning base 10, and meeting the multi-angle processing requirements of new products.

[0027] In this embodiment, a protruding pressure claw insert 25 is provided at the end of the pressure claw portion 23 away from the rotating block 22. The contact end of the pressure claw insert 25 is a narrow end that is close to the same width as the pressure claw portion 23, maintaining the pressure width between the pressure claw insert 25 and the product while reducing the pressure contact area. The pressure claw insert 25 is made of wear-resistant PEEK material to press the product firmly and prevent it from loosening during processing. The pressure claw insert 25 is fastened to the pressure claw portion 23 by threads, and the detachable connection method facilitates the replacement of pressure claw inserts 25 for different product pressure contact methods.

[0028] In this embodiment, the bottom of the positioning seat 10 is provided with a mounting seat 30, which is used to connect to the machine tool. Specifically, the mounting seat 30 includes a flange 31 for connecting to a 4.5-axis machine tool. The 4.5-axis machine tool is a commercially available part and will not be described in detail here. A concentric shaft 32 is embedded in the center of the flange 31 to keep the equipment and the machine tool coaxial. The bottom of the positioning seat 10 and the flange 31 are connected by equal-height blocks 33 that are spaced apart. The equal-height blocks 33 are reserved with height to raise the equipment body in conjunction with the machine tool, so that the machine tool's cutting tools can process the product.

[0029] It should be noted that the cylinder, motor, and sensor involved in this utility model are all commercially available parts and are existing technologies, which will not be described in detail here.

[0030] Example 2: This utility model also provides a CNC equipment with a 4.5-axis CNC machining clamping mechanism as described above. Except for the 4.5-axis CNC machining clamping mechanism, the other components are all prior art or commercially available parts. Their specific structures will not be described in detail here.

[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A 4.5-axis CNC machining clamping mechanism, characterized in that, include: The positioning seat (10) has a protruding adsorption platform (13) at the upper end. The positioning seat (10) has a product positioning barrier (14) on one side edge near the adsorption platform (13). The positioning seat (10) has product external positioning pins (15) on the other three sides edge near the adsorption platform (13) and away from the positioning barrier. The clamping assembly (20) includes several spaced-apart extensions (21) that protrude from the outer circumferential wall of the positioning seat (10). The extensions (21) are hinged to rotating blocks (22). The upper end of the rotating blocks (22) is provided with a pressure claw (23) that can rotate and press against the upper edge of the adsorption platform (13). The bottom of the positioning seat (10) is provided with a rotation driver (24) that drives the rotating blocks (22).

2. The 4.5-axis CNC machining clamping mechanism according to claim 1, characterized in that, The positioning seat (10) includes a positioning carrier plate (11) disposed at the upper end, and a positioning base plate (12) connected to the bottom of the positioning carrier plate (11).

3. The 4.5-axis CNC machining clamping mechanism according to claim 2, characterized in that, A vacuum chamber (16) is provided between the positioning carrier plate (11) and the positioning base plate (12), and a vacuum suction hole (17) connected to the vacuum chamber (16) is provided on the adsorption platform (13).

4. The 4.5-axis CNC machining clamping mechanism according to claim 3, characterized in that, The adsorption platform (13) is provided with an adsorption groove (171) that can connect to the upper end of at least two vacuum suction holes (17).

5. The 4.5-axis CNC machining clamping mechanism according to claim 1, characterized in that, The upper end of the adsorption platform (13) is provided with a recessed annular groove (18) near the edge of the adsorption platform (13).

6. The 4.5-axis CNC machining clamping mechanism according to claim 1, characterized in that, The bottom of the positioning base plate (12) is provided with a mounting groove (19) for the extension protrusion (21) to be embedded and installed.

7. The 4.5-axis CNC machining clamping mechanism according to claim 1, characterized in that, The pressure claw part (23) has a protruding pressure claw insert (25) at the end away from the rotating block (22).

8. The 4.5-axis CNC machining clamping mechanism according to claim 1, characterized in that, The bottom of the positioning seat (10) is provided with a mounting seat (30), the mounting seat (30) includes a flange (31), a concentric shaft (32) is embedded in the center of the flange (31), and the bottom of the positioning seat (10) and the flange (31) are connected by equal height blocks (33) set at intervals.

9. The 4.5-axis CNC machining clamping mechanism according to claim 1, characterized in that, The positioning seat (10) has recessed pick-and-place notches (111) on both sides.

10. A CNC machine, characterized in that, The 4.5-axis CNC machining clamping mechanism is as described in any one of claims 1-9.

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