Numerical control machining clamp for annular thin-wall aluminum alloy part

Abstract

The utility model belongs to the technical field of tool clamps, and particularly relates to a numerical control machining clamp for an annular thin-wall aluminum alloy part. Comprising a first supporting plate, a rotating assembly is arranged on the first supporting plate, the rotating assembly is rotationally connected with a machining clamping plate, a longitudinal abutting part is arranged on the machining clamping plate in the length direction, and the longitudinal abutting part can position and clamp a machined part placed on the machining clamping plate; the longitudinal abutting part can directly abut against a supporting part integrally arranged on the outer side of the machined part, the machining clamping plate is further provided with a vertical pressing part, the vertical pressing part can press the machined part to the machining clamping plate, and a machining through groove is formed in the machining clamping plate corresponding to the machined part in a penetrating mode; the longitudinal abutting part and the vertical pressing part are arranged and directly press the supporting part to fix the machined part, deformation of the machined part in the machining process is avoided, and meanwhile the machining through groove and the rotating assembly are arranged to avoid the influence of repeated clamping on the machining precision and the machining efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooling fixtures, and in particular relates to a numerical control machining fixture for an annular thin-walled aluminum alloy part. Background Art

[0002] Figure 1 (a) and (b) are schematic diagrams of the front and back structures of the workpiece, respectively. The middle part of the annular part is hollowed out, and the overall shape is annular. In the actual processing process, both the front and back sides need to be processed. The main features of thin-walled parts are light weight, low material usage, and very compact internal structure. However, such parts are easy to deform, have low rigidity and strength, and are difficult to process in the actual processing process. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned technical problems and provide a CNC machining fixture for annular thin-walled aluminum alloy parts, which is provided with a longitudinal abutment portion and a vertical pressing portion, both of which fix the workpiece by directly pressing the support portion to avoid deformation of the workpiece during the machining process. At the same time, the provision of a machining slot and a rotating assembly avoids the impact of repeated clamping on machining accuracy and efficiency.

[0004] In view of this, the utility model provides a CNC machining fixture for annular thin-walled aluminum alloy parts, including a first support plate, a rotating component is provided on the first support plate, the rotating component is rotatably connected to a machining splint, a longitudinal abutment portion is provided on the machining splint along the length direction, the longitudinal abutment portion can position and clamp the workpiece placed on the machining splint, the longitudinal abutment portion can directly abut against the support portion integrally provided on the outside of the workpiece, a vertical clamping portion is also provided on the machining splint, the vertical clamping portion can press the workpiece against the machining splint, and a machining through groove is provided on the machining splint corresponding to the workpiece.

[0005] In this technical solution, the workpiece to be processed is a thin-walled ring made of aluminum alloy. The stiffness and strength of the workpiece are relatively low, making it inconvenient to clamp. During the rough machining of the workpiece, a support part integrally provided with the machining is reserved on the outer side of the workpiece. The first support plate is horizontally arranged on the machining table. When clamping the workpiece, the workpiece is placed at a general position on the machining table, and the longitudinal abutting part is used to position and clamp the workpiece. Then, the vertical pressing part presses the workpiece against the machining clamp plate to ensure firm clamping of the workpiece. Both the longitudinal abutting part and the vertical pressing part fix the workpiece by directly pressing the support part, avoiding deformation of the workpiece during machining. At the same time, a machining through groove is provided on the machining clamp plate corresponding to the workpiece. After machining one side of the clamped workpiece, the first support plate is rotated 180° by the rotating component, and the machining device can mach the other side of the workpiece through the machining through groove, avoiding the influence of repeated clamping on machining accuracy and machining efficiency.

[0006] In the above technical solution, further, the rotating component includes a second support plate and a third support plate arranged on both sides of the machining clamp plate. The second support plate is rotatably connected with a transmission disk. A first motor is arranged on the side of the second support plate away from the machining clamp plate. The first motor is in transmission connection with the transmission disk. The transmission disk is fixedly connected with the machining clamp plate. A rotating shaft coaxial with the transmission disk extends from the side wall of the machining clamp plate away from the transmission disk. The rotating shaft is rotatably connected to a shaft seat, and the shaft seat is fixedly connected with the third support plate.

[0007] In the above technical solution, further, the longitudinal abutting part includes a first clamping plate. The first clamping plate is arranged on the machining clamp plate along the width direction of the machining clamp plate. The first clamping plate can abut against the parallel part of the support part. A pushing part capable of pushing the workpiece towards the first clamping plate for positioning and clamping is arranged on the side of the machining clamp plate away from the first clamping plate.

[0008] In the above technical solution, further, the pushing part includes a first fixing plate arranged on the machining clamp plate and parallel to the first clamping plate. A pushing screw is vertically penetrated through the first fixing plate. The pushing screw is in threaded connection with the first fixing plate. One side of the first screw penetrates into a pushing block. The first screw can push the pushing block to move. The pushing block can abut against the arc part of the support part. The pushing block can push the workpiece to abut against the first clamping plate to complete positioning and clamping.

[0009] In the above technical solution, further, a limiting frame is arranged on the machining clamp plate. The limiting frame is of a "U" - shaped structure. The limiting frame and the machining clamp plate form a limiting groove for the pushing block to slide.

[0010] In the above technical solution, further, the abutting side of the pushing block and the arc side is an arc structure capable of completely abutting against the arc part.

[0011] In the above technical solution, further, vertical pressing parts are arranged on both sides of the processing clamping plate, which can press the extension parts symmetrically arranged in the support part.

[0012] In the above technical solution, further, the vertical clamping part includes a clamping screw passed through the processing clamping plate, a clamping block for clamping the extension part is passed through the clamping screw, and a clamping nut threadedly connected to the clamping screw is provided on the clamping block. The clamping nut can press the clamping block against the extension part to fix the workpiece.

[0013] In the above technical solution, further, a support block for clamping the clamping block in the non-compression state is provided on one side of the vertical clamping portion.

[0014] In the above technical solution, further, the support block and the processing clamping plate are threadedly connected, and a support groove is correspondingly provided on the side of the support block facing the vertical clamping portion for the clamping block to be placed in after rotating around the clamping screw.

[0015] In this technical solution, when disassembling the workpiece, loosen the clamping screw to release the clamping fixation of the clamping block, rotate the clamping block around the clamping screw, and turn the clamping block laterally into the support groove in the support block, which can support the clamping block. At the same time, the clamping blocks on both sides are not above the workpiece in the vertical direction. After releasing the clamping of the longitudinal abutment part, the workpiece can be smoothly removed.

[0016] The beneficial effects of the utility model are:

[0017] 1. A support portion is reserved on the outside of the workpiece and is integrated with the processing. The first support plate is horizontally arranged on the processing table. When clamping the workpiece, the workpiece is placed at the approximate position of the processing table. The workpiece is positioned and clamped by the longitudinal abutment portion, and then the workpiece is pressed against the processing clamping plate by the vertical clamping portion to ensure that the workpiece is firmly clamped. The longitudinal abutment portion and the vertical clamping portion both fix the workpiece by directly pressing the support portion, thereby preventing the workpiece from being deformed during the processing;

[0018] 2. A processing groove is provided on the processing clamp corresponding to the workpiece. After processing one side of the clamped workpiece, the first support plate is driven to rotate 180° by the rotating assembly. The processing device can process the other side of the workpiece through the processing groove, avoiding the impact of repeated clamping on processing accuracy and processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the workpiece;

[0020] Figure 2 It is a structural diagram of a workpiece with a support portion reserved;

[0021] Figure 3 This is a schematic diagram of the structure of the utility model for clamping a workpiece;

[0022] Figure 4 This is a schematic diagram of the structure of the utility model without clamping the workpiece;

[0023] Figure 5 is a partial structural diagram of the longitudinal abutment portion;

[0024] Figure 6 yes Figure 4 A partial enlarged view of point A in the middle.

[0025] The marks in the figure are:

[0026] 1. First support plate; 2. Processing clamp; 3. Rotating assembly; 4. Processing part; 5. Support part; 6. Longitudinal abutment part; 7. Vertical pressing part; 8. Processing through groove; 9. Second support plate; 10. Third support plate; 11. First motor; 12. Transmission plate; 13. Rotating shaft; 14. Shaft seat; 15. First clamping plate; 16. Parallel part; 17. Arc part; 18. Extension part; 19. Pushing member; 20. First fixing plate; 21. Pushing screw; 22. Pushing block; 23. Limiting frame; 24. Pressing screw; 25. Pressing block; 26. Pressing nut; 27. Support block; 28. Support groove. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0028] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0029] It should be noted that the terms "first," "second," etc. in the specification and claims of this 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 are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and that the objects distinguished by "first," "second," etc. are generally of the same type, and do not limit the number of objects. 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.

[0030] It should be noted that, in the description of this application, the directions or positional relationships indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional terms do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional terms "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0031] It should be noted that, in the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments 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.

[0032] First embodiment:

[0033] like Figure 1-6As shown, this embodiment provides a CNC machining fixture for an annular thin-walled aluminum alloy part, including a first support plate 1, a rotating component 3 is provided on the first support plate 1, the rotating component 3 is rotatably connected to the machining clamp 2, a longitudinal abutment portion 6 is provided on the machining clamp 2 along the length direction, the longitudinal abutment portion 6 can position and clamp the workpiece 4 placed on the machining clamp 2, the longitudinal abutment portion 6 can directly abut the support portion 5 integrally provided on the outside of the workpiece 4, a vertical clamping portion 7 is also provided on the machining clamp 2, the vertical clamping portion 7 can press the workpiece 4 to the machining clamp 2, and a machining through groove 8 is provided on the machining clamp 2 corresponding to the workpiece 4.

[0034] The workpiece 4 is an annular thin-walled and made of aluminum alloy. The rigidity and strength of the workpiece 4 are low, and it is not convenient to clamp. In the process of rough processing of the workpiece 4, a support portion 5 is reserved and processed integrally on the outer side of the workpiece 4. The first support plate 1 is horizontally set on the processing table. When clamping the workpiece 4, the workpiece 4 is placed at the approximate position of the processing table, and the workpiece 4 is positioned and clamped by the longitudinal abutment portion 6. Then, the workpiece 4 is pressed against the processing clamping plate 2 by the vertical pressing portion 7 to ensure that the workpiece 4 is firmly clamped. The longitudinal abutment portion 6 and the vertical pressing portion 7 both fix the workpiece 4 by directly pressing the support portion 5, thereby preventing the workpiece 4 from being deformed during the processing. At the same time, a processing groove 8 is provided on the processing clamp 2 corresponding to the workpiece 4. After single-sided processing of the clamped workpiece 4 is performed, the first support plate 1 is driven by the rotating component 3 to rotate 180°, and the processing device can process the other side of the workpiece 4 through the processing groove 8, thereby avoiding the influence of repeated clamping on the processing accuracy and processing efficiency.

[0035] like Figure 3 and Figure 4 As shown, the rotating assembly 3 includes a second support plate 9 and a third support plate 10 arranged on both sides of the processing splint 2, the second support plate 9 is rotatably connected to the transmission disk 12, and the second support plate 9 is provided with a first motor 11 on the side away from the processing splint 2, the first motor 11 and the transmission disk 12 are transmission-connected, the transmission disk 12 and the processing splint 2 are fixedly connected, and a rotating shaft 13 coaxial with the transmission disk 12 extends from the side wall of the processing splint 2 away from the transmission disk 12, the rotating shaft 13 is rotatably connected to the shaft seat 14, and the shaft seat 14 and the third support plate 10 are fixedly connected.

[0036] like Figure 3-5 As shown, the longitudinal abutment portion 6 includes a first clamping plate 15, which is arranged on the processing clamping plate 2 along the width direction of the processing clamping plate 2. The first clamping plate 15 can abut against the parallel portion 16 of the support portion 5. A pushing member 19 is provided on the side of the processing clamping plate 2 away from the first clamping plate 15, which can push the workpiece 4 toward the first clamping plate 15 for positioning and clamping.

[0037] The driving member 19 includes a first fixing plate 20 disposed on the processing clamping plate 2 and parallel to the first clamping plate 15. A driving screw 21 is vertically penetrated through the first fixing plate 20, and the driving screw 21 is threadedly connected to the first fixing plate 20. One side of the first screw penetrates into the pushing block 22, and the first screw can push the pushing block 22 to move. The pushing block 22 can abut against the arc portion 17 of the supporting portion 5, and the pushing block 22 can push the workpiece 4 to abut against the first clamping plate 15 to complete positioning and clamping.

[0038] A limiting frame 23 is provided on the processing clamping plate 2. The limiting frame 23 is of a "U" - shaped structure, and the limiting frame 23 and the processing clamping plate 2 form a limiting groove for the pushing block 22 to slide.

[0039] The abutting side of the pushing block 22 against the arc side is an arc - shaped structure that can completely abut against the arc portion.

[0040] As Figure 3 、 Figure 4 and Figure 6 shown, the vertical pressing portion 7 is disposed on both sides of the processing clamping plate 2 and can press against the symmetrically - arranged extension portions 18 in the supporting portion 5.

[0041] The vertical pressing portion 7 includes a clamping screw penetrated through the processing clamping plate 2. A pressing block 25 for pressing the extension portion 18 is penetrated through the pressing screw 24. A pressing nut 26 threadedly connected to the pressing screw 24 is provided on the pressing block 25. The pressing nut 26 can press the pressing block 25 against the extension portion 18 to fix the workpiece 4.

[0042] A supporting block 27 for clamping the pressing block 25 in a non - pressed state is provided on one side of the vertical pressing portion 7.

[0043] The supporting block 27 is threadedly connected to the processing clamping plate 2. A supporting groove 28 is correspondingly provided on the side of the supporting block 27 facing the vertical pressing portion 7 for the pressing block 25 to be placed in after rotating around the clamping screw.

[0044] When disassembling the workpiece 4, loosen the clamping screw to release the clamping and fixing of the pressing block 25, rotate the pressing block 25 around the clamping screw, and laterally rotate the pressing block 25 into the supporting groove 28 in the supporting block 27, which can support the pressing block 25. At the same time, the two pressing blocks 25 are not above the workpiece 4 in the vertical direction. After releasing the clamping of the longitudinal abutting portion 6, the workpiece 4 can be smoothly taken out.

[0045] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. 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 this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A CNC machining fixture for annular thin-walled aluminum alloy parts, characterized in that: It includes a first support plate (1), a rotating component (3) is arranged on the first support plate (1), the rotating component (3) is rotatably connected to a processing clamping plate (2), a longitudinal abutting portion (6) is arranged along the length direction on the processing clamping plate (2), the longitudinal abutting portion (6) can position and clamp a workpiece (4) placed on the processing clamping plate (2), the longitudinal abutting portion (6) can directly abut against a support portion (5) integrally arranged on the outer side of the workpiece (4), a vertical pressing portion (7) is also arranged on the processing clamping plate (2), the vertical pressing portion (7) can press the workpiece (4) against the processing clamping plate (2), and a processing through groove (8) is arranged on the processing clamping plate (2) corresponding to the penetration of the workpiece (4).

2. The CNC machining fixture for annular thin-walled aluminum alloy parts according to claim 1, characterized in that: The rotating component (3) includes a second support plate (9) and a third support plate (10) arranged on both sides of the processing clamping plate (2), a transmission disk (12) is rotatably connected to the second support plate (9), a first motor (11) is arranged on the side of the second support plate (9) away from the processing clamping plate (2), the first motor (11) is in transmission connection with the transmission disk (12), the transmission disk (12) is fixedly connected to the processing clamping plate (2), a rotating shaft (13) coaxial with the transmission disk (12) extends from the side wall of the processing clamping plate (2) away from the transmission disk (12), the rotating shaft (13) is rotatably connected to a shaft seat (14), and the shaft seat (14) is fixedly connected to the third support plate (10).

3. The CNC machining fixture for annular thin-walled aluminum alloy parts according to claim 1, characterized in that: The longitudinal abutting portion (6) includes a first clamping plate (15), the first clamping plate (15) is arranged on the processing clamping plate (2) along the width direction of the processing clamping plate (2), the first clamping plate (15) can abut against a parallel portion (16) of the support portion (5), and a pushing member (19) capable of pushing the workpiece (4) towards the first clamping plate (15) for positioning and clamping is arranged on the side of the processing clamping plate (2) away from the first clamping plate (15).

4. The CNC machining fixture for annular thin-walled aluminum alloy parts according to claim 3, characterized in that: The pushing member (19) includes a first fixing plate (20) arranged on the processing clamping plate (2) and parallel to the first clamping plate (15), a pushing screw (21) is vertically penetrated through the first fixing plate (20), the pushing screw (21) is in threaded connection with the first fixing plate (20), one side of the first screw penetrates into a pushing and tightening block (22), the first screw can push the pushing and tightening block (22) to move, the pushing and tightening block (22) can abut against an arc portion (17) of the support portion (5), and the pushing and tightening block (22) can push the workpiece (4) to abut against the first clamping plate (15) to complete positioning and clamping.

5. The CNC machining fixture for annular thin-walled aluminum alloy parts according to claim 4, characterized in that: A limiting frame (23) is arranged on the processing clamping plate (2), the limiting frame (23) is of a "C" - shaped structure, and the limiting frame (23) and the processing clamping plate (2) form a limiting groove for the pushing and tightening block (22) to slide.

6. The CNC machining fixture for annular thin-walled aluminum alloy parts according to claim 4, characterized in that: The abutting side of the pushing and tightening block (22) against the arc side is an arc structure capable of completely abutting against the arc portion.

7. The CNC machining fixture for annular thin-walled aluminum alloy parts according to claim 1, characterized in that: The vertical pressing portion (7) is arranged on both sides of the processing clamping plate (2) and can press against symmetrically arranged extending portions (18) in the support portion (5).

8. The CNC machining fixture for annular thin-walled aluminum alloy parts according to claim 7, characterized in that: The vertical pressing portion (7) includes a clamping screw rod passing through the processing clamping plate (2), a clamping block (25) for clamping the extension portion (18) passing through the clamping screw rod (24), and a clamping nut (26) threadedly connected to the clamping screw rod (24) is provided on the clamping block (25). The clamping nut (26) can press the clamping block (25) against the extension portion (18) to fix the workpiece (4).

9. A CNC machining fixture for annular thin-walled aluminum alloy parts according to any one of claims 1 and 7, characterized in that: A support block (27) for clamping the clamping block (25) in a non-compression state is provided on one side of the vertical clamping portion (7).

10. The CNC machining fixture for annular thin-walled aluminum alloy parts according to claim 9, characterized in that: The support block (27) is threadedly connected to the processing clamping plate (2), and a support groove (28) is correspondingly provided on one side of the support block (27) facing the vertical clamping portion (7) for the clamping block (25) to be placed therein after rotating around the clamping screw.

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