Clamp for machining large annular thin-wall part
By designing a clamp with a ring-shaped support panel and detachable internal and external retainers, the problem of deformation during clamping of large ring-shaped thin-walled parts is solved, achieving uniform force distribution and deformation-free support for the parts during processing, and making it suitable for various processing equipment.
Patent Information
- Application Number
- CN202520148931.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In mechanical manufacturing, the deformation problem during clamping of large, annular, thin-walled parts affects the machining quality.
A clamp comprising an annular support panel, an outer pressure plate assembly, and an inner pressure plate assembly is designed. The parts are uniformly constrained by the detachably connected outer and inner clamps to prevent clamping deformation.
It effectively prevents parts from deforming during processing, is suitable for various processing equipment, and improves processing quality.
Smart Images
Figure CN223889473U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fixtures, and more specifically, to a fixture for machining large annular thin-walled parts. Background Technology
[0002] In mechanical manufacturing, the manufacturing of large, thin-walled, annular parts is generally divided into several processes such as roughing, semi-finishing, and finishing. Since the overall wall thickness of the part is relatively thin after roughing, conventional support and clamping methods are easily used in subsequent semi-finishing and finishing processes, which can easily cause clamping deformation and thus affect the quality of the part. Utility Model Content
[0003] The main purpose of this invention is to provide a fixture for processing large annular thin-walled parts, so as to solve the technical problem of clamping deformation in the prior art.
[0004] To achieve the above objectives, according to one aspect of the present invention, a fixture for machining large annular thin-walled parts is provided, the technical solution of which is as follows:
[0005] A fixture for machining large annular thin-walled parts includes: an annular support panel, the size of which is adapted to the part; an outer pressure plate assembly, the outer pressure plate assembly including external retainers spaced apart on the annular support panel; the external retainers being detachably connected to the annular support panel; and an inner pressure plate assembly, the inner pressure plate assembly including internal retainers spaced apart on the annular support panel; the internal retainers being detachably connected to the annular support panel; during machining, the part is fixed inside the outer pressure plate assembly or outside the inner pressure plate assembly.
[0006] This utility model's fixture is used to fix large, annular, thin-walled parts after rough machining during the mechanical manufacturing process. By featuring a hollow annular support panel, it facilitates the machining of the part's internal cavities. It is suitable for most machining equipment, such as five-axis machining centers, three-axis machining centers, horizontal machining centers, and vertical lathes. The discretely distributed and detachably connected external and internal retainers ensure more uniform force distribution on the part, providing radial constraint and effectively preventing deformation during clamping. In use, if machining the part's internal cavity is required, the internal retainer can be removed, leaving the external retainer for support, ensuring no interference during internal cavity machining. If machining the part's external shape is required, the internal retainer is installed and the external retainer removed, leaving the internal retainer for support before machining.
[0007] As a further fixture of the aforementioned jig for processing large annular thin-walled parts, it also includes a support, which comprises: a horizontal base plate, multiple horizontal base plates connected at their ends to form an equilateral polygonal ring; and vertical side plates, the bottom of which are connected to the connection node of the horizontal base plate, and the top of which are connected to the lower side of the annular support panel. This allows for easy assembly and disassembly, and facilitates use.
[0008] As a further fixture of the aforementioned jig for processing large annular thin-walled parts: the bottom of the vertical side plate is connected to the two horizontal base plates at the connection node by a first screw; the top of the vertical side plate is connected to the annular support panel by a second screw. This allows for easy assembly and disassembly, and provides good support.
[0009] As a further fixture for the aforementioned jig used to process large annular thin-walled parts, there are at least six horizontal base plates and six vertical side plates. This allows the shape of the bracket to better match the shape of the annular support panel, reducing interference from the bracket on the machining of the part's internal cavity surface.
[0010] As a further fixture of the aforementioned jig for processing large annular thin-walled parts: the external retainer has a first vertical rod, a first horizontal rod, and a second vertical rod; the lower end of the first vertical rod is supported on the upper surface of the annular support panel, and the second vertical rod is supported on the outside of the part; a first slotted hole is formed on the first horizontal rod, and a first threaded hole is provided on the annular support panel; the external retainer is connected to the annular support panel by a third screw that matches the first slotted hole and the first threaded hole. This facilitates disassembly and use, especially when the surface of the part has protrusions or grooves, the position of the external retainer can be adjusted through the first slotted hole, thereby better positioning and clamping the part.
[0011] As a further fixture of the aforementioned jig for machining large annular thin-walled parts: the internal fixation device includes a first fixing block and a second fixing block; the first fixing block includes a second horizontal bar and a third vertical bar, the second horizontal bar is connected to the lower surface of the annular support panel by a fourth screw, and the third vertical bar is connected to the inner side of the annular support panel by a fifth screw; the second fixing block includes a fourth vertical bar and a third horizontal bar, the lower end of the fourth vertical bar is supported on the upper surface of the third vertical bar, the third horizontal bar has a second slotted hole, the upper surface of the third vertical bar has a second threaded hole, and the second fixing block is connected to the third vertical bar by a sixth screw that matches the second slotted hole and the second threaded hole. This facilitates disassembly and use, especially since the first fixing block is located on the inner side of the annular support panel rather than its upper surface, allowing the part to be closer to the inner edge of the annular support panel. After the first fixing block is disassembled, sufficient internal machining space can be provided, preventing the inner edge of the annular support panel from affecting the clamping and machining of the jig. Meanwhile, when the surface of the part has protrusions or grooves, the position of the second fixing block can be adjusted through the second strip hole, thereby better positioning and clamping the part.
[0012] As a further fixture to the aforementioned jig for machining large annular thin-walled parts, the annular support panel is provided with protrusions or grooves that fit the lower end of the part. This allows for better positioning and securing of the part.
[0013] In summary, the fixture of this utility model has a simple structure, is easy to use, can better support parts, and effectively prevents parts from deforming during processing. It is particularly suitable for processing large annular thin-walled parts and has strong practicality.
[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description
[0015] The accompanying drawings, which form part of this utility model, are used to aid in understanding this utility model. The contents provided in the drawings and their related descriptions in this utility model can be used to explain this utility model, but do not constitute an improper limitation of this utility model.
[0016] In the attached diagram:
[0017] Figure 1 This is a top view schematic diagram of an embodiment of the present invention for processing large annular thin-walled parts.
[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0019] Figure 3 This is a bottom view schematic diagram of an embodiment of the present invention for processing large annular thin-walled parts.
[0020] Figure 4 for Figure 3 Enlarged view of point B in the middle.
[0021] Figure 5 This is a schematic diagram illustrating one usage state of an embodiment of the present invention for processing large annular thin-walled parts.
[0022] The relevant markings in the above figures are:
[0023] 100 - Ring-shaped support panel, 110 - Ring-shaped groove, 210 - Horizontal base plate, 220 - Vertical side plate, 300 - External fixator, 310 - First vertical bar, 320 - First horizontal bar, 330 - Second vertical bar, 340 - First strip hole, 400 - Internal fixator, 410 - Second horizontal bar, 420 - Third vertical bar, 430 - Fourth vertical bar, 440 - Third horizontal bar, 450 - Second strip hole, 510 - Hollow protrusion, 610 - First screw, 620 - Second screw, 630 - Third screw, 640 - Fourth screw, 650 - Fifth screw, 660 - Sixth screw. Detailed Implementation
[0024] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:
[0025] The technical solutions and features provided in the various parts of this utility model, including the following description, can be combined with each other without conflict.
[0026] Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the protection scope of the present invention.
[0027] Regarding the terminology and units used in this utility model: The terms "comprising," "having," and any variations thereof in the specification, claims, and related parts of this utility model are intended to cover non-exclusive inclusion.
[0028] Figure 1 This is a top view schematic diagram of an embodiment of the present invention for processing large annular thin-walled parts. Figure 2 for Figure 1 Enlarged view of point A in the middle. Figure 3 This is a bottom view schematic diagram of an embodiment of the present invention for processing large annular thin-walled parts. Figure 4 for Figure 3 Enlarged view of point B in the middle. Figure 5 This is a schematic diagram illustrating one usage state of an embodiment of the present invention for processing large annular thin-walled parts.
[0029] like Figure 1-4The fixture shown for machining large annular thin-walled parts includes an annular support panel 100, an outer pressure plate assembly, an inner pressure plate assembly, and a bracket. The size of the annular support panel 100 is adapted to the part, and the annular support panel 100 is provided with an annular groove 110 adapted to the lower end of the part. During machining, the part is fixed inside the outer pressure plate assembly or outside the inner pressure plate assembly.
[0030] The support structure includes eight horizontal base plates 210 and eight vertical side plates 220. The horizontal base plates 210 are connected at their ends to form an equilateral polygonal ring. The bottom of each vertical side plate 220 is connected to the horizontal base plates 210 at a connection node, and the top of each vertical side plate 220 is connected to the lower side of the ring-shaped support panel 100. The bottom of each vertical side plate 220 is connected to the two horizontal base plates 210 at the connection node by a first screw 610, and the top of each vertical side plate 220 is connected to the ring-shaped support panel 100 by a second screw 620.
[0031] The outer pressure plate assembly includes external retainers 300 spaced apart on the annular support panel 100, and the external retainers 300 are detachably connected to the annular support panel 100. The external retainer 300 has a first vertical rod 310, a first horizontal rod 320, and a second vertical rod 330; the lower end of the first vertical rod 310 is supported on the upper surface of the annular support panel 100, and the second vertical rod 330 is supported on the outside of the part; the first horizontal rod 320 has a first strip hole 340, and the annular support panel 100 has a first threaded hole; the external retainer 300 is connected to the annular support panel 100 by a third screw 630 adapted to the first strip hole 340 and the first threaded hole.
[0032] The inner pressure plate assembly includes internal fixators 400 spaced apart on the annular support panel 100, and the internal fixators 400 are detachably connected to the annular support panel 100. The internal fixators 400 include a first fixing block and a second fixing block; the first fixing block includes a second horizontal bar 410 and a third vertical bar 420, the second horizontal bar 410 is connected to the lower surface of the annular support panel 100 by a fourth screw 640, and the third vertical bar 420 is connected to the inner surface of the annular support panel 100 by a fifth screw 650; the second fixing block includes a fourth vertical bar 430 and a third horizontal bar 440, the lower end of the fourth vertical bar 430 is supported on the upper surface of the third vertical bar 420, the third horizontal bar 440 has a second slotted hole 450, the upper surface of the third vertical bar 420 has a second threaded hole, and the second fixing block is connected to the third vertical bar 420 by a sixth screw 660 adapted to the second slotted hole 450 and the second threaded hole.
[0033] like Figure 5As shown, the part has hollow protrusions 510 arranged at intervals. The second vertical rod 330 of the external fixator 300 is supported in the hollow protrusions 510 of the part, and the internal fixator 400 is supported between two adjacent hollow protrusions 510.
[0034] In this invention, a large annular thin-walled part refers to a part whose wall thickness (thin part) to inner diameter ratio is ≤1 / 20.
[0035] The foregoing has described the relevant content of this utility model. Those skilled in the art will be able to implement this utility model based on these descriptions. All other embodiments obtained by those skilled in the art based on the above description of this utility model without inventive effort should fall within the protection scope of this utility model.
Claims
1. A fixture for machining large annular thin-walled parts, characterized in that: include: An annular support panel (100), the size of which is adapted to the part; An outer pressure plate assembly, the outer pressure plate assembly including external fixators (300) spaced apart on an annular support panel (100); the external fixators (300) are detachably connected to the annular support panel (100); An inner pressure plate assembly, the inner pressure plate assembly including internal fixators (400) spaced apart on an annular support panel (100); the internal fixators (400) are detachably connected to the annular support panel (100); During processing, the parts are fixed to the inside of the outer pressure plate assembly or the outside of the inner pressure plate assembly; The internal fixation device (400) includes a first fixing block and a second fixing block; the first fixing block includes a second horizontal bar (410) and a third vertical bar (420), the second horizontal bar (410) is connected to the lower surface of the annular support panel (100) by a fourth screw (640), and the third vertical bar (420) is connected to the inner side of the annular support panel (100) by a fifth screw (650); the second fixing block includes a fourth vertical bar (430) and a third horizontal bar (440), the lower end of the fourth vertical bar (430) is supported on the upper surface of the third vertical bar (420), the third horizontal bar (440) has a second strip hole (450), the upper surface of the third vertical bar (420) has a second threaded hole, and the second fixing block is connected to the third vertical bar (420) by a sixth screw (660) that is adapted to the second strip hole (450) and the second threaded hole.
2. The fixture for machining large annular thin-walled parts as described in claim 1, characterized in that: It also includes a support, the support comprising: A horizontal base plate (210) is formed by connecting multiple horizontal base plates (210) at their ends to form a ring-shaped equilateral polygon; A vertical side plate (220) is connected at its bottom to the horizontal bottom plate (210) at a connection node, and at its top to the lower side of the annular support panel (100).
3. The fixture for machining large annular thin-walled parts as described in claim 2, characterized in that: The bottom of the vertical side plate (220) is connected to the two horizontal bottom plates (210) at the connection node by a first screw (610); the top of the vertical side plate (220) is connected to the annular support panel (100) by a second screw (620).
4. The fixture for machining large annular thin-walled parts as described in claim 2, characterized in that: There are at least six horizontal base plates (210) and six vertical side plates (220).
5. The fixture for machining large annular thin-walled parts as described in claim 1, characterized in that: The external fixator (300) has a first vertical rod (310), a first horizontal rod (320), and a second vertical rod (330); the lower end of the first vertical rod (310) is supported on the upper surface of the annular support panel (100), and the second vertical rod (330) is supported on the outside of the part; a first strip hole (340) is provided on the first horizontal rod (320), and a first threaded hole is provided on the annular support panel (100); the external fixator (300) is connected to the annular support panel (100) by a third screw (630) that is adapted to the first strip hole (340) and the first threaded hole.
6. The fixture for machining large annular thin-walled parts as described in claim 1, characterized in that: The annular support panel (100) is provided with protrusions or grooves that are adapted to the lower end of the part.