Four-axis clamp for front cross beam of support

Abstract

The utility model provides a four-axis clamp for a front cross beam of a support, and aims to efficiently and accurately position and clamp the front cross beam of the support, so that multi-surface machining can be completed by one-time clamping on a CNC (Computer Numerical Control) machining center, the machining efficiency is improved, and the positioning error is reduced. The device comprises a rack, a pair of Y-axis rotating assemblies are arranged on the rack, a mounting plate is fixedly connected between the Y-axis rotating assemblies, a Y-axis positioning assembly is arranged at one end of the mounting plate, and a plurality of supporting blocks, a plurality of Z-axis clamping assemblies and a plurality of X-axis clamping assemblies are further arranged on the mounting plate. The utility model relates to the technical field of tool clamps.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a four-axis fixture for a front crossbeam of a bracket. Background Art

[0002] In the field of modern machining, fixtures are important bridges connecting machine tools and workpieces. Their design and application are directly related to machining accuracy and production efficiency. Among them, four-axis fixtures, as an efficient and precise clamping tool, are widely used in various machining scenarios, especially in the multi-faceted machining of complex parts. With the continuous improvement of the manufacturing industry's requirements for machining accuracy and production efficiency, the design and technological innovation of four-axis fixtures have become a hot topic in the industry.

[0003] However, when machining workpieces in traditional CNC machining centers, multiple clamping is often required to complete the machining of different surfaces. This not only increases the complexity of the operation, but also easily leads to the accumulation of positioning errors, affecting the machining quality and consistency of the final product.

[0004] Therefore, it is imperative to develop a new type of four-axis fixture, which aims to achieve multi-sided processing of the workpiece with one clamping on the CNC machining center through innovative design, thereby avoiding positioning errors caused by multiple clamping and significantly improving machining accuracy and production efficiency. Utility Model Content

[0005] To achieve the above-mentioned purpose, the utility model provides a four-axis clamp for the front crossbeam of the bracket, which aims to realize efficient and precise positioning and clamping of the front crossbeam of the bracket, so that multi-faceted processing can be completed with one clamping on the CNC machining center, thereby improving processing efficiency and reducing positioning errors.

[0006] The technical solution adopted by the utility model is: a four-axis clamp for the front crossbeam of a bracket, comprising a frame, a pair of Y-axis rotating components are arranged on the frame, a mounting plate is fixedly connected between the Y-axis rotating components, a Y-axis positioning component is arranged at one end of the mounting plate, and a plurality of supporting blocks, a plurality of Z-axis clamping components and a plurality of X-axis clamping components are also arranged on the mounting plate.

[0007] Based on the above, a pair of Y-axis rotating components is used, which not only realizes the rotation adjustment of the workpiece in the Y-axis direction, but also improves the positioning flexibility of the workpiece, which is convenient for adapting to different processing requirements. At the same time, through the precise control of the Y-axis rotating components, the cutting angle and position during the processing process can be optimized.

[0008] Furthermore, the support block is provided with a horizontal portion and a vertical portion. When positioning the workpiece, the horizontal portion fits against the bottom surface of the workpiece, and the vertical portion fits against the side surface of the workpiece.

[0009] Based on the above, the design of the support block increases the contact area with the workpiece and greatly improves the stability of the support.

[0010] Furthermore, the Z-axis clamping assembly includes a lifting and rotating cylinder arranged on the mounting plate, and a pressure block is arranged at the output end of the lifting and rotating cylinder. When the workpiece is clamped, the lower surface of the pressure block is in contact with the upper surface of the workpiece.

[0011] Based on the above, the uniqueness of the Z-axis clamping assembly lies in that the clamping is driven by the lifting and rotating cylinder. This method not only achieves stable clamping of the upper surface of the workpiece, effectively preventing vibration and displacement during processing, but the lifting and rotating cylinder also provides a flexible clamping force adjustment range, so that it can adapt to workpieces of different thicknesses and materials.

[0012] Furthermore, the X-axis clamping assembly includes a pushing cylinder fixedly connected to the bottom of the mounting plate through a second fixed plate and a lever passing through the mounting plate, one end of the lever is connected to the output end of the pushing cylinder by a hinged manner and the other end is provided with a rubber pad, and a support shaft passing through the middle of the lever is also provided, and both ends of the support shaft are fixed in grooves on the mounting plate through a third fixed plate. When clamping the workpiece, the pushing cylinder extends, the lever rotates around the support shaft, and the rubber pad presses the side of the workpiece.

[0013] Based on the above, the innovative X-axis clamping assembly adopts a push cylinder and lever structure. This design cleverly achieves the goal of firmly clamping the workpiece with a smaller cylinder thrust through the amplification effect of the lever. At the same time, the addition of rubber pads not only increases the friction of the clamping surface, but also effectively avoids possible damage to the workpiece caused by direct metal contact.

[0014] Furthermore, the Y-axis rotation assembly includes a main spindle box and a driven box that are relatively arranged, and fixed bosses are provided on the opposite sides of the main spindle box and the driven box. The mounting plate is fixedly connected to the fixed boss by bolts. The main spindle box also includes a servo motor, and the output end of the servo motor drives the fixed boss to rotate.

[0015] Based on the above, the Y-axis rotation assembly includes a spindle box and a driven box. This structural design not only ensures the stability and accuracy of the rotation, but also the introduction of the servo motor realizes precise control of the Y-axis rotation, thereby greatly improving the processing accuracy and efficiency.

[0016] Furthermore, sandpaper is fixed to the surface of the pressing block via a cable tie, and when the workpiece is clamped, the polishing surface of the sandpaper contacts the upper surface of the workpiece.

[0017] Based on the above, the unique design of fixing sandpaper on the surface of the pressing block not only increases the friction between the pressing block and the workpiece through the sandpaper, but also further prevents the workpiece from sliding during the processing, thereby improving the processing quality.

[0018] Furthermore, the Y-axis positioning assembly includes a telescopic cylinder and a positioning column arranged at the output end of the telescopic cylinder, the telescopic cylinder is fixed on the upper surface of the mounting plate, and the positioning column moves along the Z-axis direction.

[0019] Based on the above, the Y-axis positioning assembly adopts the innovative use of telescopic cylinders and positioning columns. The telescopic cylinder makes it possible to quickly and accurately position the machine, thereby greatly improving production efficiency. At the same time, the movement of the positioning column along the Z-axis further ensures the accuracy and stability of positioning.

[0020] Furthermore, the support block is provided with a plurality of knife-avoiding grooves.

[0021] Based on the above, the design of the tool avoidance groove cleverly prevents possible interference between the tool and the support block during the machining process, thereby protecting both the support block and the tool.

[0022] In order to more clearly illustrate the above features of the present invention and the objectives to be achieved, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 : It is the front view of the utility model;

[0024] Figure 2 : is a schematic structural diagram of the support block 5;

[0025] Figure 3 : It is a schematic diagram of the structure of the utility model;

[0026] Figure 4 :for Figure 1 Cross-sectional view of the middle AA section;

[0027] Figure 5 :for Figure 1 A partial enlarged schematic diagram of the middle B part;

[0028] Figure 6 :for Figure 1 A partial enlarged schematic diagram of the middle C part;

[0029] Figure 7 : It is a schematic diagram of the structure of the blank workpiece 8;

[0030] Figure 8 : It is a structural schematic diagram of a semi-finished workpiece 81;

[0031] Fig. 9 : It is the axonometric drawing of the utility model.

[0032] Explanation of the accompanying figures: 1-frame; 2-Y-axis rotating assembly; 3-mounting plate; 4-Y-axis positioning assembly; 5-support block; 6-Z-axis clamping assembly; 7-X-axis clamping assembly; 8-blank workpiece; 81-semi-finished workpiece; 21-spindle box; 22-driven box; 23-fixed boss; 24-servo motor; 41-telescopic cylinder; 42-positioning column; 51-horizontal part; 52-vertical part; 53-knife avoidance groove; 61-lifting and rotating cylinder; 62 first fixed plate; 63-pressing block; 631-sandpaper; 71-second fixed plate; 72-pushing cylinder; 73-lever; 74-support shaft; 75-third fixed plate; 76-rubber pad; 77-groove. DETAILED DESCRIPTION

[0033] like Figures 1 to 9 As shown, a four-axis clamp for a front crossbeam of a support comprises a frame (1), a pair of Y-axis rotating components 2 are arranged on the frame 1, a mounting plate 3 is fixedly connected between the Y-axis rotating components 2, a Y-axis positioning component 4 is arranged at one end of the mounting plate 3, and a plurality of supporting blocks 5, a plurality of Z-axis clamping components 6 and a plurality of X-axis clamping components 7 are also arranged on the mounting plate 3.

[0034] The support block 5 is provided with a horizontal portion 51 and a vertical portion 52 . When positioning the workpiece, the horizontal portion 51 fits against the bottom surface of the workpiece 8 , and the vertical portion 2 fits against the side surface of the workpiece 8 . The support block 5 is also provided with a plurality of knife avoidance grooves 53 .

[0035] The Z-axis clamping assembly 6 includes a lifting and rotating cylinder 61 that passes through the mounting plate 3. The bottom of the lifting and rotating cylinder 61 is fixedly connected to the lower surface of the mounting plate 3 via a first fixed plate 62. A pressure block 63 is provided at the output end of the lifting and rotating cylinder 61. When clamping the workpiece, the lower surface of the pressure block 63 fits against the upper surface of the workpiece 8.

[0036] The X-axis clamping assembly 7 includes a pushing cylinder 72 fixedly connected to the bottom of the mounting plate 3 through a second fixed plate 71 and a lever 73 passing through the mounting plate 3. One end of the lever 73 is connected to the output end of the pushing cylinder 72 by a hinged manner and the other end is provided with a rubber pad 76. The middle part of the lever 73 is also provided with a support shaft 74 passing through it. Both ends of the support shaft 74 are fixed in grooves 77 on the mounting plate 3 through third fixed plates 75. When clamping the workpiece, the pushing cylinder 72 extends, the lever 73 rotates around the support shaft 74, and the rubber pad 76 presses the side of the workpiece 8.

[0037] The Y-axis rotating assembly 2 includes a main spindle box 21 and a driven box 22 which are arranged opposite to each other. A fixed boss 23 is provided on the opposite side of the main spindle box 21 and the driven box 22. The mounting plate 3 is fixedly connected to the fixed boss 23 by bolts. The main spindle box 21 also includes a servo motor 24.

[0038] Sandpaper 631 is also fixed on the surface of the pressing block 63 by a cable tie. When the workpiece is clamped, the rough surface of the sandpaper 631 contacts the upper surface of the workpiece 8.

[0039] The Y-axis positioning assembly 4 includes a telescopic cylinder 41 and a positioning column 42 arranged at the output end of the telescopic cylinder 41. The telescopic cylinder 41 is fixed on the upper surface of the mounting plate 3, and the positioning column 42 moves along the Z-axis direction.

[0040] The specific working mode of the utility model is as follows:

[0041] First, adjust the upper surface of the mounting plate 33 to a horizontal level to provide a stable support for the fixture. Next, perform meticulous assembly work on the mounting plate 3, and install a Y-axis positioning assembly 4 at one end to accurately control the position of the workpiece 8 in the Y-axis direction. At the same time, a number of support blocks 5 are also installed on the mounting plate 3, with the horizontal portion 51 tightly fitting the bottom surface of the workpiece 8, and the vertical portion 52 tightly fitting the side of the workpiece 8, providing a stable support for the workpiece 8. In addition, a number of Z-axis clamping assemblies 6 and X-axis clamping assemblies 7 are also provided on the mounting plate 3, which are responsible for clamping the workpiece 8 in the Z-axis and X-axis directions, respectively, to ensure that the workpiece 8 does not move or shake during the processing. During the assembly process, pay special attention to adjusting the position and angle of each component to ensure that they can work together to achieve accurate clamping and positioning of the workpiece 8. Finally, the entire fixture is carefully inspected and tested to ensure that all components are installed correctly and that the fixture can stably clamp the workpiece 8 to meet the processing requirements.

[0042] When installing the blank of the workpiece 8: first, it is necessary to confirm that the size, shape and quality of the blank of the workpiece 8 meet the processing requirements, and clean the work area to ensure that the mounting plate 3 and the surrounding environment are clean and tidy without interference from debris. Next, the blank of the workpiece 8 is gently placed on a number of support blocks 5, which provide positioning for the workpiece 8 in the Z-axis and X-axis directions. The Y-axis positioning assembly 4 on the fixture is used to further position the blank of the workpiece 8, and adjust the position of the blank of the workpiece 8 in the Y-axis direction so that it is aligned with the reference line of the fixture. In this embodiment, the positioning column 42 in the Y-axis positioning assembly 4 is only used for blank positioning before processing, and is retracted into the telescopic cylinder 41 after the workpiece 8 is clamped and processing begins to avoid affecting the movement of the tool during processing.

[0043] After confirming that the initial positioning of the workpiece 8 blank is accurate, the Z-axis clamping assembly 6 is used to clamp the workpiece 8 blank. By adjusting the strength and position of the clamping device, the workpiece 8 blank is ensured to be stable and immovable in the Z-axis direction. Next, the X-axis clamping assembly 7 is used to further clamp the workpiece 8 blank to ensure that the workpiece 8 blank is also stable and immovable in the X-axis direction. After completing the clamping operation, it is necessary to carefully check whether the position of the workpiece 8 blank in the fixture is accurate, whether the clamping force is moderate, and whether the support block 5 is stable. If any deviation or looseness is found, it should be adjusted immediately to ensure that the workpiece 8 blank will not move or deform during the processing. After confirming that the workpiece 8 blank is correctly installed, the entire fixture is fixed on the processing equipment, and the appropriate fixing method and fasteners are selected for fixing according to the specific requirements of the processing equipment and the design characteristics of the fixture. Finally, adjust the parameters and procedures of the processing equipment according to the processing requirements to ensure the smooth progress of the processing process, and pay close attention to the processing status and the changes of the workpiece 8 blank during the processing. If there is any abnormality, it should be stopped in time for inspection and processing.

[0044] The above description is only the optimal solution embodiment of the present invention and is not intended to limit the present invention. Various modifications or substitutions made to the present invention by those skilled in the art without departing from the essence and protection scope of the present invention should also be within the protection scope of the present invention.

Claims

1. A four-axis fixture for a front crossbeam of a support, comprising a frame (1), characterized in that: A pair of Y-axis rotating assemblies (2) are arranged on the frame (1), a mounting plate (3) is fixedly connected between the Y-axis rotating assemblies (2), a Y-axis positioning assembly (4) is arranged at one end of the mounting plate (3), and a plurality of supporting blocks (5), a plurality of Z-axis clamping assemblies (6) and a plurality of X-axis clamping assemblies (7) are also arranged on the mounting plate (3).

2. The four-axis fixture for the front crossbeam of the bracket according to claim 1, characterized in that: The support block (5) is provided with a horizontal portion (51) and a vertical portion (52). When positioning the workpiece, the horizontal portion (51) fits against the bottom surface of the workpiece (8), and the vertical portion (52) fits against the side surface of the workpiece (8).

3. The four-axis fixture for the front crossbeam of the bracket according to claim 1 is characterized in that: The Z-axis clamping assembly (6) comprises a lifting and rotating cylinder (61) arranged on the mounting plate (3), and a pressing block (63) is arranged at the output end of the lifting and rotating cylinder (61). When clamping the workpiece, the lower surface of the pressing block (63) is in contact with the upper surface of the workpiece (8).

4. The four-axis fixture for the front crossbeam of the bracket according to claim 1 is characterized in that: The X-axis clamping assembly (7) comprises a pushing cylinder (72) fixedly connected to the bottom of the mounting plate (3) via a second fixing plate (71) and a lever (73) passing through the mounting plate (3); one end of the lever (73) is connected to the output end of the pushing cylinder (72) by a hinged manner and the other end is provided with a rubber pad (76); a support shaft (74) passing through the lever (73) is also provided in the middle part thereof; both ends of the support shaft (74) are fixed in grooves (77) on the mounting plate (3) via a third fixing plate (75); when clamping a workpiece, the pushing cylinder (72) extends, the lever (73) rotates around the support shaft (74), and the rubber pad (76) presses the side of the workpiece (8).

5. The four-axis fixture for the front crossbeam of the bracket according to claim 1, characterized in that: The Y-axis rotating assembly (2) comprises a main spindle box (21) and a driven box (22) which are arranged opposite to each other, and a fixed boss (23) is arranged on the opposite side of the main spindle box (21) and the driven box (22), and the mounting plate (3) is fixedly connected to the fixed boss (23) by bolts, and the main spindle box (21) also comprises a servo motor (24), and the output end of the servo motor (24) drives the fixed boss (23) to rotate.

6. The four-axis fixture for the front crossbeam of the bracket according to claim 3, characterized in that: Sandpaper (631) is also fixed to the surface of the pressing block (63) via a cable tie, and when the workpiece is clamped, the polished surface of the sandpaper (631) contacts the upper surface of the workpiece (8).

7. The four-axis fixture for the front crossbeam of the bracket according to claim 1, characterized in that: The Y-axis positioning assembly (4) comprises a telescopic cylinder (41) and a positioning column (42) arranged at the output end of the telescopic cylinder (41); the telescopic cylinder (41) is fixed on the upper surface of the mounting plate (3); and the positioning column (42) moves along the Z-axis direction.

8. The four-axis fixture for the front crossbeam of the bracket according to claim 2, characterized in that: The support block (5) is provided with a plurality of knife avoidance grooves (53).

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