Multi-station rotary hydraulic four-axis machining center clamp

Abstract

The invention discloses a multi-station rotary hydraulic four-axis machining center clamp, and relates to the technical field of clamps, the multi-station rotary hydraulic four-axis machining center clamp comprises a clamping platform, discs are fixedly mounted on the left side and the right side of the clamping platform, a plurality of hydraulic clamping devices are arranged at the top of the clamping platform, and positioning devices are arranged on the right sides of the hydraulic clamping devices; a positioning supporting device is arranged on the right side of the positioning device; one-time clamping multi-face machining can be achieved, the form and location tolerance requirement and the repeated positioning precision are guaranteed, meanwhile, the clamping frequency is reduced, and the auxiliary time is shortened; by arranging the multiple stations, multiple parts can be machined at the same time through one-time clamping, and the machining efficiency is greatly improved; hydraulic clamping is adopted, the clamping force is uniform, clamping is convenient, and a workpiece is not prone to deformation; a manipulator and a production line can be matched to realize full-automatic production; the device is suitable for different types of parts positioned through planes and inner holes, the positioning size can be adjusted according to the size of a workpiece, and the applicability is high.

Description

Technical Field

[0001] This invention relates to the field of CNC fixture technology, specifically a multi-station rotary hydraulic four-axis machining center fixture. Background Technology

[0002] A fixture is a device used in mechanical manufacturing to fix a workpiece in the correct position for machining or inspection. Fixtures are mainly used in machining to fix the workpiece in place, ensuring machining accuracy and improving efficiency. Specific applications are as follows:

[0003] Positioning and Fixing: Fixtures precisely position workpieces, ensuring they remain in the correct position during machining, preventing movement or vibration, and guaranteeing machining accuracy. Increased Production Efficiency: Rapid workpiece clamping reduces manual operation time, automating batch processing and improving production efficiency. Enhanced Machining Safety: Simplified operating procedures reduce the risk of direct contact with hazardous equipment, enhancing operational safety. Adaptability to Diverse Machining Needs: Adjustable designs accommodate workpieces of different shapes and sizes, such as automotive parts and electronic components, meeting the demands of industrial production.

[0004] For parts with many machining surfaces, numerous processes, and large batch sizes, companies typically design single-process fixtures and use multiple clamping operations to distribute the machining processes. This approach has the following drawbacks:

[0005] 1) Multiple clamping will cause the reference surface to change continuously, and the cumulative error will increase. In particular, when complex workpieces are flipped and positioned multiple times, the deviation of the reference surface will directly affect the machining accuracy.

[0006] 2) The number of clamping operations increases, the proportion of auxiliary time increases, and the overall processing cycle is extended;

[0007] 3) Uneven or excessive clamping force can easily cause problems such as workpiece warping and indentation, especially for thin-walled parts.

[0008] Therefore, this application proposes a multi-station rotary hydraulic four-axis machining center fixture. Summary of the Invention

[0009] The technical problem solved by this invention is to overcome the defects of existing technologies, such as large cumulative error, long auxiliary time, uneven clamping force, and low production efficiency caused by multiple clamping operations, and to provide a multi-station rotary hydraulic four-axis machining center fixture.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a multi-station rotary hydraulic four-axis machining center fixture, comprising a clamping platform, on both the left and right sides of the clamping platform being fixedly mounted with discs, and multiple sets of hydraulic clamping devices being provided on the top of the clamping platform, each set of hydraulic clamping devices having a positioning device on its right side, and a positioning support device being provided on the right side of the positioning device, and a reference block being installed at the center of the top of the clamping platform; the positioning support device includes a positioning element, which is fixedly mounted on the top of the clamping platform.

[0011] Preferably, the positioning support device further includes an expansion sleeve drive rod, which is fixedly connected to the top of the clamping platform, and an expansion sleeve body is also installed on the top of the expansion sleeve drive rod.

[0012] Preferably, the hydraulic clamping device includes a hydraulic cylinder, which is fixedly installed on the top of the clamping platform. A pressure plate is hinged to the top of the hydraulic cylinder, a hinge plate is hinged to the bottom of the pressure plate, and a hinge block is hinged to the bottom of the hinge plate. The hinge block is installed on the top of the hydraulic cylinder.

[0013] Preferably, hinge pins are installed between the hydraulic cylinder and the pressure plate, between the pressure plate and the hinge plate, and between the hinge plate and the hinge block.

[0014] Preferably, the hydraulic cylinder is also equipped with a hydraulic speed control valve.

[0015] Preferably, the positioning device includes a positioning block, which is fixedly installed on the top of the clamping platform, and an elastic plunger is installed on the top of the positioning block near the front side.

[0016] Preferably, the number of the multiple sets of hydraulic clamping devices is four, and the four hydraulic clamping devices are respectively located at the top of the clamping platform near the four corners.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. When in use, the present invention, through the cooperation of the positioning block, elastic plunger and expansion sleeve assembly, and the use of the rotary clamping platform, can realize multi-face processing of the product in one clamping, while ensuring the form and position tolerance requirements and repeatability positioning accuracy, reducing the number of clamping times and shortening the auxiliary time.

[0019] 2. When using this invention, by setting up multiple workstations, multiple parts can be processed simultaneously in one clamping, greatly improving processing efficiency;

[0020] 3. When using this invention, the hydraulic clamping provides uniform clamping force, makes clamping convenient, and prevents workpiece deformation. Specifically, the hydraulic cylinder drives the hinge plate to move upward, and the hinge plate drives one end of the pressure plate to move upward through the hinge pin. The lever principle is used to press the other end of the pressure plate downward to clamp the workpiece, thus achieving clamping. Conversely, the workpiece can be released.

[0021] 4. When using this invention, it can be combined with robotic arms and production lines to achieve fully automated production and reduce the workload of workers.

[0022] 5. When in use, this invention can be applied to different types of parts that are positioned by planes or internal holes. The positioning size of the expansion sleeve drive rod and the positioning block can be adjusted according to the size of the workpiece, making it highly adaptable. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external structure of a multi-station rotary hydraulic four-axis machining center fixture according to the present invention;

[0024] Figure 2 This is a schematic diagram of the top planar structure of a multi-station rotary hydraulic four-axis machining center fixture according to the present invention;

[0025] Figure 3 This is a partial structural diagram of a multi-station rotary hydraulic four-axis machining center fixture according to the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a multi-station rotary hydraulic four-axis machining center fixture positioning support device according to the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of a hydraulic clamping device for a multi-station rotary hydraulic four-axis machining center fixture according to the present invention;

[0028] Figure 6 This is a front view schematic diagram of the fixture for a multi-station rotary hydraulic four-axis machining center according to the present invention.

[0029] The following are the labeling elements in the diagram: 1. Clamping platform; 2. Disc; 3. Hydraulic clamping device; 31. Hydraulic cylinder; 32. Hinge plate; 33. Hinge pin; 34. Pressure plate; 35. Hinge block; 36. Hydraulic speed control valve; 4. Positioning device; 41. Positioning block; 42. Elastic plunger; 5. Positioning support device; 51. Positioning component; 52. Expansion sleeve drive rod; 53. Expansion sleeve body; 6. Reference block. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-6 The present invention provides a technical solution: a multi-station rotary hydraulic four-axis machining center fixture, including a clamping platform 1, on which discs 2 are fixedly installed on both the left and right sides, and multiple sets of hydraulic clamping devices 3 are provided on the top of the clamping platform 1. Positioning devices 4 are provided on the right side of each set of hydraulic clamping devices 3, and positioning support devices 5 are provided on the right side of each positioning device 4. A reference block 6 is installed at the center of the top of the clamping platform 1; the positioning support device 5 includes a positioning element 51, which is fixedly installed on the top of the clamping platform 1.

[0032] In this embodiment, during use, the entire fixture is clamped on the four-axis fixed-axis machining center using two discs 2. By rotating, multiple working surfaces of the workpiece can be processed, realizing multi-faceted and multi-process processing. Subsequently, the product to be processed can be placed on the positioning device 4 and the positioning support device 5, and cooperate with the hydraulic clamping device 3 to achieve reliable fixing of the product. Moreover, multiple products can be positioned synchronously at one time, improving production efficiency.

[0033] As an optional implementation, the positioning support device 5 also includes an expansion sleeve drive rod 52, which is fixedly connected to the top of the clamping platform 1, and an expansion sleeve body 53 is also installed on the top of the expansion sleeve drive rod 52.

[0034] In this embodiment, when using the product, after placing it flat, the expansion sleeve body 53 is fitted with the product, and under the cooperative action of the expansion sleeve drive rod 52, the product's inner hole is supported and positioned, further achieving the positioning and locking of the product.

[0035] As an optional implementation, the hydraulic clamping device 3 includes a hydraulic cylinder 31, which is fixedly installed on the top of the clamping platform 1. A pressure plate 34 is hinged to the top of the hydraulic cylinder 31, a hinge plate 32 is hinged to the bottom of the pressure plate 34, and a hinge block 35 is hinged to the bottom of the hinge plate 32. The hinge block 35 is installed on the top of the hydraulic cylinder 31.

[0036] In this embodiment, when in use, the hydraulic cylinder 31 can be driven to push one end of the pressure plate 34 upward. The lever principle is used to make the other end of the pressure plate 34 press against the upper wall of the product. The positioning support device 5 cooperates with the positioning device 4 to achieve reliable positioning of the product. It can realize multi-face processing of the product in one clamping, ensuring the form and position tolerance requirements and repeatability positioning accuracy, while reducing the number of clamping times and shortening the auxiliary time.

[0037] As an optional implementation, hinge pins 33 are installed between the hydraulic cylinder 31 and the pressure plate 34, between the pressure plate 34 and the hinge plate 32, and between the hinge plate 32 and the hinge block 35.

[0038] The pressure plate 34 can swing left and right through the four-bar linkage mechanism to ensure that the workpiece does not interfere with the pressure plate 34 during assembly and disassembly.

[0039] In this embodiment, during use, the arrangement of multiple hinge pins 33 ensures that the hydraulic cylinder 31 and the pressure plate 34, the pressure plate 34 and the hinge plate 32, and the hinge plate 32 and the hinge block 35 are firmly hinged, thereby improving the stability of subsequent operation.

[0040] As an optional implementation, a hydraulic speed control valve 36 is also installed on the hydraulic cylinder 31.

[0041] In this embodiment, the hydraulic speed control valve 36 is used to adjust the oil flow rate in the hydraulic cylinder 31 during use.

[0042] As an optional implementation, the positioning device 4 includes a positioning block 41, which is fixedly installed on the top of the clamping platform 1, and an elastic plunger 42 is installed on the top of the positioning block 41 near the front side.

[0043] In this embodiment, during use, the elastic plunger 42 and the positioning block 41 are used in conjunction with the hydraulic clamping device 3 and the positioning support device 5 to achieve reliable positioning of the product, and the elastic plunger 42 and the positioning block 41 play a pre-tightening role.

[0044] As an optional implementation, the number of multiple hydraulic clamping devices 3 is four, and the four hydraulic clamping devices 3 are respectively located at the top of the clamping platform 1 near the four corners.

[0045] In this embodiment, four parts can be clamped simultaneously during use, improving production efficiency.

[0046] Workflow: First, the hinge plate 32 swings the pressure plate 34 to the left, placing the product to be processed on the positioning block 41. The positioning block 41 limits the rear of the product and, in conjunction with the expansion sleeve body 53 and the elastic plunger 42, positions and pre-tightens the product. Then, the hinge plate 32 swings to the position shown in the right figure, placing the pressure plate 34 above the product. Next, the hydraulic cylinder 31 is driven, pushing the left end of the pressure plate 34 upward. Using the lever principle, the right end of the pressure plate 34 presses against the upper wall of the product, clamping it. By mounting the two discs 2 on a four-axis fixed-axis machining center, multiple working surfaces of the workpiece can be processed by rotation, achieving multi-faceted and multi-process machining.

[0047] The expansion sleeve drive rod 52, expansion sleeve body 53 and positioning block 41 are installed independently, and the positioning dimensions can be adjusted according to the size of the workpiece.

[0048] 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-station rotary hydraulic four-axis machining center fixture, comprising a clamping platform (1), characterized in that: The clamping platform (1) is fixedly installed with discs (2) on both the left and right sides, and multiple sets of hydraulic clamping devices (3) are provided on the top of the clamping platform (1). Positioning devices (4) are provided on the right side of each set of hydraulic clamping devices (3). Positioning support devices (5) are provided on the right side of each positioning device (4). A reference block (6) is installed at the center of the top of the clamping platform (1). The positioning support device (5) includes a positioning element (51), which is fixedly installed on the top of the clamping platform (1).

2. The multi-station rotary hydraulic four-axis machining center fixture according to claim 1, characterized in that: The positioning support device (5) also includes an expansion sleeve drive rod (52), which is fixedly connected to the top of the clamping platform (1), and an expansion sleeve body (53) is also installed on the top of the expansion sleeve drive rod (52).

3. The multi-station rotary hydraulic four-axis machining center fixture according to claim 1, characterized in that: The hydraulic clamping device (3) includes a hydraulic cylinder (31), which is fixedly installed on the top of the clamping platform (1). A pressure plate (34) is hinged to the top of the hydraulic cylinder (31), and a hinge plate (32) is hinged to the bottom of the pressure plate (34). A hinge block (35) is hinged to the bottom of the hinge plate (32), and the hinge block (35) is installed on the top of the hydraulic cylinder (31).

4. The multi-station rotary hydraulic four-axis machining center fixture according to claim 3, characterized in that: Hinges (33) are installed between the hydraulic cylinder (31) and the pressure plate (34), between the pressure plate (34) and the hinge plate (32), and between the hinge plate (32) and the hinge block (35).

5. The multi-station rotary hydraulic four-axis machining center fixture according to claim 3, characterized in that: The hydraulic cylinder (31) is also equipped with a hydraulic speed control valve (36).

6. The multi-station rotary hydraulic four-axis machining center fixture according to claim 1, characterized in that: The positioning device (4) includes a positioning block (41), which is fixedly installed on the top of the clamping platform (1), and an elastic plunger (42) is installed on the top of the positioning block (41) near the front side.

7. The multi-station rotary hydraulic four-axis machining center fixture according to claim 1, characterized in that: The number of the multiple sets of the hydraulic clamping devices (3) is four, and the four hydraulic clamping devices (3) are located at the top of the clamping platform (1) near the four corners.

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