Four-axis linkage CNC tool clamp

Abstract

The utility model discloses a four-axis linkage CNC work fixture in the technical field of fixtures, which comprises a four-claw air cylinder and a workpiece dismounting direction A. The end of the four-claw air cylinder facing the workpiece dismounting direction A is movably connected with four air cylinder clamping claws, and the end of the four-claw air cylinder close to the air cylinder clamping claws is provided with a product positioning column. The outer wall of the product positioning column is sleeved with a machined product, the four air cylinder clamping jaws are connected with the outer wall of the machined product in a clamped mode, and a gear rack fixing assembly is arranged at the end, away from the four-jaw air cylinder, of the product positioning column. The four-axis linkage machining tool can be used for machining the shapes of holes, surfaces, cavities and the like of tubular products through four-axis linkage, the corresponding tool size can be manufactured according to the mode according to the sizes of different products, the tool can synchronously rotate by at least + / -1080 degrees along with four axes without winding an air pipe, all machining contents can be completed through one-time clamping, and the machining efficiency is improved. High-precision positioning and stable clamping of the workpiece are achieved, the machining efficiency and quality are improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of fixtures, in particular to a four-axis linkage CNC tooling fixture. Background Art

[0002] CNC machine tools automatically process the parts according to the pre-programmed processing program. We compile the processing route, process parameters, tool motion trajectory, displacement, cutting parameters and auxiliary functions of the parts into a processing program sheet according to the instruction code and program format specified by the CNC machine tool, and then record the contents of the program sheet on the control medium, and then input it into the CNC device of the CNC machine tool to command the machine tool to process the parts.

[0003] During the CNC machine tool processing, fixtures are indispensable auxiliary tools used to fix the workpiece and ensure its stability and positioning accuracy during the processing. However, most traditional fixtures can only achieve single-axis fixation. For complex workpiece processing that requires multi-axis linkage, its positioning accuracy and processing efficiency often cannot meet the requirements. Summary of the invention

[0004] The purpose of the utility model is to provide a four-axis linkage CNC fixture to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a four-axis linkage CNC tooling fixture, comprising a four-jaw cylinder and a workpiece disassembly direction A, the four-jaw cylinder is movably connected to one end of the workpiece disassembly direction A with four cylinder jaws, a product positioning column is arranged at one end of the four-jaw cylinder close to the cylinder jaws, a processed product is sleeved on the outer wall of the product positioning column, and the four cylinder jaws are clamped with the outer wall of the processed product, a gear bar fixing assembly is arranged at one end of the product positioning column away from the four-jaw cylinder, four movable jaws are arranged at one end of the gear bar fixing assembly close to the product positioning column, a connecting gear is arranged at one end of the four movable jaws away from the product positioning column, and the four movable jaws are clamped with the processed product, a cylinder fixing seat is arranged at one end of the gear bar fixing assembly away from the product positioning column, and a cylinder is fixedly connected to one end of the cylinder fixing seat away from the product positioning column, and four guide racks are arranged at one end of the cylinder fixing seat close to the gear bar fixing assembly, and the four guide racks are respectively meshed and connected with connecting gears matching their positions.

[0006] As a further solution of the utility model: the output end of the cylinder is arranged toward one end of the cylinder fixing seat, a through hole for connecting the movable end of the cylinder is opened at the center position of the cylinder fixing seat, and the output end of the cylinder is fixedly connected to a connecting seat after penetrating the through hole on the cylinder fixing seat.

[0007] As a further solution of the utility model: one end of the four guide racks close to the connecting seat is detachably connected to the connecting seat by bolts.

[0008] As a further solution of the utility model: the outer wall side wall of the cylinder fixing seat close to one end of the product positioning column is fixedly connected with multiple fixing seat support rods, and the ends of the multiple fixing seat support rods away from the cylinder fixing seat are fixedly connected to the side wall of the gear bar fixing assembly.

[0009] As a further solution of the utility model: the gear bar fixing assembly also includes a connecting plate, on which a plurality of connecting grooves for connecting gears to rotate are provided, and the central ends of the four connecting gears are all penetrated by a rotating shaft for active connection, and the four connecting gears are all rotatably connected to the connecting grooves on the connecting plate through the rotating shaft. In order to ensure the stable rotation of the movable jaw, the connecting groove on the rack fixing assembly is connected to the connecting gear for rotation, and the internal space of the connecting groove should also meet the expansion and contraction of the guide rack, so as to ensure that when the cylinder is started and the guide rack is driven to move axially horizontally through the connecting seat, the movable jaw can be driven to clamp and release the processed product through the meshing movement of the guide rack and the connecting gear. At the same time, in order to ensure the movement of the guide rack, the corresponding position of the product positioning column is also provided with a groove or hole for the movement of the guide rack.

[0010] As a further solution of the utility model: the side wall of one end of the four-claw cylinder away from the product positioning column is threadedly connected with multiple long-rod bolts, and one end of the multiple long-rod bolts passing through the four-claw cylinder is threadedly connected with the product positioning column.

[0011] As a further solution of the utility model: the four-claw cylinder and the air supply end of the cylinder are fixedly connected with an air pipe, a three-claw chuck is provided at one end of the four-claw cylinder away from the product positioning column, and the end of the four-claw cylinder close to the three-claw chuck is clamped with the three-claw chuck.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model can be used for four-axis linkage processing of holes, surfaces, cavities and other shapes of tubular products, and corresponding tooling sizes can be manufactured in this way according to different product sizes. The tooling can rotate synchronously with the four axes by at least + / -1080 degrees without entanglement in the air pipe, and all processing contents can be completed by one clamping, thereby achieving high-precision positioning and stable clamping of the workpiece, improving processing efficiency and quality, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main structure of a four-axis linkage CNC fixture of the utility model;

[0014] Figure 2This is a partial structural diagram of a four-axis linkage CNC fixture of the utility model;

[0015] Figure 3 This is a schematic diagram of the exploded structure of a four-claw cylinder in a four-axis linkage CNC fixture of the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of a gear bar fixing assembly in a four-axis linkage CNC fixture of the utility model.

[0017] In the figure: 1. three-jaw chuck; 2. four-jaw cylinder; 21. cylinder jaws; 22. long rod bolt; 3. product positioning column; 4. processed product; 5. gear bar fixing assembly; 51. connecting plate; 52. rotating shaft; 53. connecting gear; 54. movable jaws; 6. cylinder; 7. air pipe; 8. cylinder fixing seat; 9. connecting seat; 10. fixing seat support rod; 11. guide rack. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0020] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figures 1 to 4 In the embodiment of the utility model, a four-axis linkage CNC tooling fixture includes a four-claw cylinder 2 and a workpiece disassembly direction A. One end of the four-claw cylinder 2 facing the workpiece disassembly direction A is movably connected with four cylinder clamps 21. One end of the four-claw cylinder 2 close to the cylinder clamp 21 is provided with a product positioning column 3. The outer wall of the product positioning column 3 is sleeved with a processed product 4. The four cylinder clamps 21 are clamped with the outer wall of the processed product 4. The end of the product positioning column 3 away from the four-claw cylinder 2 is provided with a gear bar fixing component 5. The gear bar fixing component 5 is close to the product One end of the positioning column 3 is provided with four movable jaws 54, and the end of the four movable jaws 54 away from the product positioning column 3 is provided with a connecting gear 53, the four movable jaws 54 are clamped with the processed product 4, and the end of the gear bar fixing assembly 5 away from the product positioning column 3 is provided with a cylinder fixing seat 8, and the end of the cylinder fixing seat 8 away from the product positioning column 3 is fixedly connected with the cylinder 6, and the end of the cylinder fixing seat 8 close to the gear bar fixing assembly 5 is provided with four guide racks 11, and the four guide racks 11 are respectively meshed and connected with the connecting gears 53 matching the position.

[0023] The output end of the cylinder 6 is arranged toward one end of the cylinder fixing seat 8. A through hole for connecting the movable end of the cylinder 6 is opened at the center of the cylinder fixing seat 8. The output end of the cylinder 6 is fixedly connected to a connecting seat 9 after penetrating the through hole on the cylinder fixing seat 8.

[0024] One end of the four guide racks 11 close to the connecting seat 9 is detachably connected to the connecting seat 9 by bolts.

[0025] The outer wall side wall of the cylinder fixing seat 8 close to the product positioning column 3 is fixedly connected with multiple fixing seat support rods 10, and the ends of the multiple fixing seat support rods 10 away from the cylinder fixing seat 8 are fixedly connected to the side wall of the gear bar fixing assembly 5.

[0026] The gear bar fixing assembly 5 also includes a connecting plate 51, on which a plurality of connecting grooves for connecting gears 53 to rotate are provided, and the central ends of the four connecting gears 53 are all penetrated with a rotating shaft 52 for active connection, and the four connecting gears 53 are all rotatably connected to the connecting grooves on the connecting plate 51 through the rotating shaft 52. In order to ensure the stable rotation of the movable clamping jaw 54, the connecting groove on the rack fixing assembly 5 is connected to the connecting gear 53 for rotation, and the internal space of the connecting groove should also meet the expansion and contraction of the guide rack 11, so as to ensure that when the cylinder 6 is started and the guide rack 11 is driven to perform axial horizontal movement through the connecting seat 9, the meshing movement of the guide rack 11 and the connecting gear 53 can drive the movable clamping jaw 54 to clamp and release the processed product 4. At the same time, in order to ensure the movement of the guide rack 11, the corresponding position of the product positioning column 3 is also provided with a groove or hole for the movement of the guide rack 11.

[0027] A plurality of long-rod bolts 22 are threadedly connected through the side wall of one end of the four-claw cylinder 2 away from the product positioning column 3 . The plurality of long-rod bolts 22 pass through one end of the four-claw cylinder 2 and are threadedly connected to the product positioning column 3 .

[0028] The air supply ends of the four-claw air cylinder 2 and the air cylinder 6 are fixedly connected with an air pipe 7, a three-claw chuck 1 is provided at one end of the four-claw air cylinder 2 away from the product positioning column 3, and the end of the four-claw air cylinder 2 close to the three-claw chuck 1 is clamped with the three-claw chuck 1.

[0029] See also Figure 1 , Embodiment 1:

[0030] In the process of precision parts processing, the positioning accuracy and stability of the workpiece are very high. When using this device to clamp the workpiece, the workpiece can be accurately positioned on the workbench of the machine tool. At the same time, this tool can drive the workpiece to rotate synchronously with the surroundings to achieve accurate movement and positioning of the workpiece in each axial direction. In this way, not only can the processing accuracy be greatly improved, but also the error and scrap rate in the processing process can be reduced, and the production efficiency can be improved.

[0031] Example 2: Processing of complex curved workpieces

[0032] Traditional jigs and fixtures cannot meet the requirements for processing workpieces with complex curved surfaces. However, this jig can realize simultaneous processing of workpieces in multiple directions by following the synchronous rotation of the four sides when clamping the workpiece. At the same time, the precise clamping and stable performance of the jig can ensure that the workpiece will not shake or deviate during the processing, thereby ensuring the processing quality. In addition, the flexibility and adjustability of the jig can also adapt to the processing needs of workpieces of different shapes and sizes, improving the versatility and efficiency of the jig.

[0033] In addition, this tool can also be used for machining operations in the following industries:

[0034] Aviation parts processing:

[0035] In the aviation industry, many parts have complex shapes and high precision requirements. This device can ensure the stability and positioning accuracy of these parts during processing. For example, when processing aircraft engine blades, the fixture can accurately fix the blades, and through four-axis linkage control, the blades can be finely processed in multiple directions to meet the high precision requirements of aviation parts.

[0036] Mould manufacturing:

[0037] In the process of mold manufacturing, it is usually necessary to process complex curved surfaces and shapes. This device realizes the processing of molds in multiple directions through four-axis synchronous rotation. This can not only improve the processing accuracy of the mold, but also shorten the processing cycle and improve production efficiency.

[0038] Auto parts processing:

[0039] The manufacturing of automotive parts has strict requirements on precision and efficiency. This device can be widely used in the processing of automotive parts, such as engine cylinders, crankshafts, gears, etc. Through the high-precision positioning and stable clamping of the fixture, the stability and precision of the parts during the processing can be ensured, and the quality and performance of automotive parts can be improved.

[0040] Precision instrument manufacturing:

[0041] In the field of precision instrument manufacturing, such as optical instruments, medical equipment, etc., there are extremely high requirements for the processing accuracy and surface quality of workpieces. Using this fixture, the workpiece can be accurately positioned and clamped, and through the synchronous rotation of four axes, the workpiece can be finely processed in multiple directions. This can not only improve the processing accuracy and surface quality of the instrument, but also shorten the manufacturing cycle and reduce production costs.

[0042] 3D printing post-processing:

[0043] With the rapid development of 3D printing technology, more and more products are manufactured using 3D printing technology. However, 3D printed products often need post-processing to meet the final use requirements. The fixture of the utility model can be used in the post-processing process of 3D printed products, such as grinding, polishing, cutting, etc. Through the precise positioning and stable clamping of the fixture, the stability and accuracy of the post-processing process can be ensured, and the quality and performance of 3D printed products can be improved.

[0044] The working principle of the utility model is as follows: assemble the equipment, clamp the four-claw cylinder 2 through the three-claw chuck 1, and then start the cylinder 6, drive the guide rack 11 to move through the connecting seat 9, and drive the movable jaw 54 to unfold through the meshing connection between the guide rack 11 and the connecting gear 53. At the same time, start the four-claw cylinder 2, open the cylinder jaw 21, and then sleeve the workpiece to the outside of the product positioning column 3 in the opposite direction of the workpiece disassembly direction A, start the claw cylinder 2, drive the cylinder jaw 21 to move, and clamp one end of the processed product 4. At the same time, close the cylinder 6, drive the movable jaw 54 to move through the guide rack 11 and the connecting gear 53, and clamp the other end of the processed product 4.

[0045] Start the CNC four-axis processing equipment to process the processed product 4. After the processing is completed, release the movable clamp 54 and the four-jaw cylinder 2 to release the clamping of the processed product 4, and remove the workpiece along the workpiece disassembly direction A.

[0046] It should be noted that, in this article, the term "comprises", "includes" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0047] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A four-axis linkage CNC fixture, comprising a four-claw cylinder (2) and a workpiece disassembly direction A, characterized in that: One end of the four-claw cylinder (2) facing the workpiece disassembly direction A is movably connected to four cylinder clamps (21); one end of the four-claw cylinder (2) close to the cylinder clamps (21) is provided with a product positioning column (3); the outer wall of the product positioning column (3) is sleeved with a processed product (4); the four cylinder clamps (21) are clamped with the outer wall of the processed product (4); one end of the product positioning column (3) away from the four-claw cylinder (2) is provided with a gear bar fixing assembly (5); one end of the gear bar fixing assembly (5) close to the product positioning column (3) is provided with four movable clamps (54); the four A connecting gear (53) is arranged at one end of the movable clamping jaw (54) away from the product positioning column (3), and the four movable clamping jaws (54) are clamped with the processed product (4). A cylinder fixing seat (8) is arranged at one end of the gear bar fixing assembly (5) away from the product positioning column (3), and the cylinder fixing seat (8) is fixedly connected to the cylinder (6) at one end away from the product positioning column (3). Four guide racks (11) are arranged at one end of the cylinder fixing seat (8) close to the gear bar fixing assembly (5), and the four guide racks (11) are respectively meshed and connected with the connecting gears (53) of matching positions.

2. The four-axis linkage CNC fixture according to claim 1, characterized in that: The output end of the cylinder (6) is arranged toward one end of the cylinder fixing seat (8), a through hole for connecting the movable end of the cylinder (6) is provided at the center of the cylinder fixing seat (8), and the output end of the cylinder (6) is fixedly connected to a connecting seat (9) after penetrating the through hole on the cylinder fixing seat (8).

3. The four-axis linkage CNC fixture according to claim 1, characterized in that: One end of the four guide racks (11) close to the connecting seat (9) is detachably connected to the connecting seat (9) via bolts.

4. The four-axis linkage CNC fixture according to claim 1, characterized in that: The outer wall side wall of the cylinder fixing seat (8) close to one end of the product positioning column (3) is fixedly connected to a plurality of fixing seat support rods (10), and the ends of the plurality of fixing seat support rods (10) away from the cylinder fixing seat (8) are fixedly connected to the side wall of the gear bar fixing assembly (5).

5. The four-axis linkage CNC fixture according to claim 1, characterized in that: The gear bar fixing assembly (5) further comprises a connecting disk (51), on which a plurality of connecting grooves for connecting gears (53) to rotate are provided, and the central ends of the four connecting gears (53) are all penetrated by a rotating shaft (52) for movably connecting thereto, and the four connecting gears (53) are all rotatably connected to the connecting grooves on the connecting disk (51) via the rotating shaft (52).

6. The four-axis linkage CNC fixture according to claim 1, characterized in that: A plurality of long-rod bolts (22) are threadedly connected through the side wall of one end of the four-claw cylinder (2) away from the product positioning column (3); and the plurality of long-rod bolts (22) pass through one end of the four-claw cylinder (2) and are threadedly connected to the product positioning column (3).

7. The four-axis linkage CNC fixture according to claim 1, characterized in that: The air supply ends of the four-claw air cylinder (2) and the air cylinder (6) are both fixedly connected to an air pipe (7); a three-claw chuck (1) is provided at one end of the four-claw air cylinder (2) away from the product positioning column (3); and an end of the four-claw air cylinder (2) close to the three-claw chuck (1) is clamped with the three-claw chuck (1).

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