Support fixture and milling and turning devices having the support fixture

Abstract

This invention provides a supporting fixture and a milling and turning apparatus incorporating the supporting fixture, relating to the fields of clamping tools and milling and turning technologies. The aim is to solve the technical problem of deformation easily occurring in annular thin-walled parts during milling or turning. The technical solution adopted is: a supporting fixture, comprising: a base, and supporting members mounted on the base; multiple supporting members are evenly distributed along the circumference of the annular thin-walled part mounted on the base; the supporting members provide support for the circumferential surface of the annular thin-walled part, and the supporting surface is configured as an arc surface adapted to the annular thin-walled part; the supporting member is a plate-shaped fluid bladder; a limiting member is provided on the side of the fluid bladder facing away from the annular thin-walled part to limit the movement of the fluid bladder. Furthermore, this invention also provides a milling and turning apparatus incorporating the aforementioned supporting fixture, which can provide support and protection during milling or turning of the annular thin-walled part, reducing tool deflection and plastic deformation during the machining process.

Description

Technical Field

[0001] This invention relates to the fields of clamping tools and milling and turning technology, and more specifically to a support fixture and a milling and turning device having the support fixture. Background Technology

[0002] Thin-walled casing parts have poor rigidity and are prone to tool deflection and plastic deformation during machining, resulting in decreased machining accuracy. Minimizing tool deflection and plastic deformation during turning and milling of thin-walled casing parts is a primary consideration when designing machining processes and tooling. Since most thin-walled casing parts are annular, it is necessary to design a support fixture that provides good support for these annular thin-walled parts. Summary of the Invention

[0003] The purpose of this invention is to provide a support fixture that effectively supports annular thin-walled parts, reducing tool deflection and plastic deformation during machining, thereby improving the machining accuracy of the annular thin-walled parts. Based on the same inventive concept, another objective of this invention is to provide milling and turning apparatuses having the aforementioned support fixture.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A support fixture includes: a base for mounting an annular thin-walled component and a support member detachably mounted on the base; wherein, multiple support members are provided and evenly distributed along the circumference of the annular thin-walled component mounted on the base; the support members provide support for the circumferential surface of the annular thin-walled component, and the support surface of the support members is configured as an arc surface adapted to the annular thin-walled component; the support member is a plate-shaped fluid bladder; a limiting member is provided on the side of the fluid bladder facing away from the annular thin-walled component to limit the movement of the fluid bladder, and the fluid bladder is mounted on the base through the limiting member.

[0005] Optionally, the fluid bladder has an inlet and an outlet; the inlet of each fluid bladder is connected to the same inlet pipe and is adapted to a booster pump; the outlet of each fluid bladder is connected to the same outlet pipe and is adapted to a discharge pump; the inlet pipe is equipped with a pressure sensor and a first valve, and the outlet pipe is equipped with a second valve.

[0006] Optionally, the length, height, and thickness directions of the fluid bladder correspond to the circumferential, axial, and radial directions of the annular thin-walled component, respectively; the limiting component is rod-shaped and extends along the height direction of the fluid bladder; each fluid bladder is adapted to multiple limiting components, and the limiting components that limit the same fluid bladder are distributed along the length direction of the fluid bladder; the limiting components that limit the same fluid bladder are installed on the same mounting base, and the mounting base and the base are respectively provided with mounting holes and are fixedly connected by connecting bolts provided in the corresponding mounting holes.

[0007] Optionally, the upper and lower ends of the limiting member are connected to the two ends of the rope, and the fluid bladder is bound between the limiting member and the rope; the limiting member has an annular groove around its circumference, and the end of the rope is configured as a loop structure and sleeved in the annular groove; the limiting member includes two detachably connected upper and lower sections, one of which is provided with a threaded hole and the other is provided with a matching screw.

[0008] Optionally, the fluid bladder is provided with a reinforcing layer made of an elastic plate on the sidewall corresponding to the annular thin-walled member and the sidewall corresponding to the limiting member.

[0009] Optionally, the limiting member is installed on the mounting base via an adjusting member; the adjusting member includes: an upper horizontal arm, a lower horizontal arm, and a connecting arm connecting the upper and lower horizontal arms; the upper horizontal arm has a limiting through hole adapted to the limiting member, and the top of the lower horizontal arm has a limiting blind hole that supports and limits the lower section of the limiting member; the upper horizontal arm has a slot on the side wall of the limiting through hole for the rope to pass through.

[0010] Optionally, the mounting base includes: an upper horizontal plate, a lower horizontal plate, and a vertical plate connecting the upper horizontal plate and the lower horizontal plate; the bottom of the upper horizontal plate has a first limiting groove that limits the upper horizontal arm, and the top of the lower horizontal plate has a second limiting groove that limits the lower horizontal arm; the first limiting groove and the second limiting groove extend radially along the annular thin-walled member and penetrate the mounting base.

[0011] Optionally, the vertical plate has an adjustment through hole extending radially along the annular thin-walled member; an adjustment bolt is inserted through the adjustment through hole from the side facing the annular thin-walled member to the side away from the annular thin-walled member, and a fastening nut is fitted; the connecting arm of the adjustment member is located on the side of the vertical plate away from the annular thin-walled member; the connecting arm of the adjustment member has a positioning hole for the adjustment bolt to pass through, and positioning nuts are respectively fitted on both sides of the positioning hole on the shank of the adjustment bolt.

[0012] This application also provides a milling apparatus having a support fixture with the aforementioned structure.

[0013] This application also provides a turning apparatus having a support fixture with the aforementioned structure.

[0014] The working principle of this invention is as follows: the support component of the support fixture is installed on the base, so that the support surface of the support component provides support to the circumferential surface of the annular thin-walled part, thus completing the assembly of the support fixture. Typically, this support fixture is modified from an existing fixture. The support component provides auxiliary support to the annular thin-walled part, and the positioning and fixing of the annular thin-walled part are still accomplished through the clamping mechanism of the original fixture. In this case, the position of the support component needs to avoid the location where the annular thin-walled part mates with the original clamping mechanism.

[0015] Therefore, the beneficial effects of the present invention are as follows: using a fluid bladder as a support can fully contact the circumferential surface of the annular thin-walled part, providing uniform and good support for the annular thin-walled part, reducing tool deflection and plastic deformation during processing, and improving the processing accuracy of the annular thin-walled part. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure supporting the tooling; Figure 2 This is a schematic diagram showing how the limiting component restricts the fluid bladder. Figure 3 This is a schematic diagram showing the connection between the fluid bladder and the limiting component, adjusting component, and mounting base. Figure 4 A schematic diagram of the assembly of the limiting component and the adjusting component; Figure 5 This is a schematic diagram showing the connection between the adjusting component and the mounting base; Figure 6 This is a schematic diagram showing the connection between the mounting base and the adjusting bolt.

[0018] Reference numerals: 1. Base; 2. Support component; 3. Support surface; 4. Fluid bladder; 5. Limiting component; 6. Elastic plate; 7. Mounting seat; 8. Rope; 9. Adjustable distance component; 10. Upper horizontal arm; 11. Lower horizontal arm; 12. Connecting arm; 13. Limiting through hole; 14. Limiting blind hole; 15. First limiting groove; 16. Second limiting groove; 17. Upper horizontal plate; 18. Lower horizontal plate; 19. Vertical plate; 20. Adjustable distance through hole; 21. Adjustable distance bolt; 22. Fastening nut; 23. Positioning hole; 24. Positioning nut. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0020] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] like Figures 1-2 As shown, this embodiment of the invention provides a support fixture. The support fixture includes: a base 1 for mounting an annular thin-walled component, and a support member 2 detachably mounted on the base 1; wherein, multiple support members 2 are provided, evenly distributed along the circumference of the annular thin-walled component mounted on the base 1; the support members 2 provide support for the circumferential surface of the annular thin-walled component, and the support surface 3 of the support member 2 is configured as an arc surface adapted to the annular thin-walled component. The support member 2 is a plate-shaped fluid bladder 4; a limiting member 5 is provided on the side of the fluid bladder 4 facing away from the annular thin-walled component to limit the movement of the fluid bladder 4, and the fluid bladder 4 is mounted on the base 1 through the limiting member 5. It should be understood that this support fixture is a modification of an existing fixture. The clamping mechanism of the existing fixture can refer to the clamping mechanism of the prior art, typically a pressure block. The pressure block is detachably mounted on the base by bolts and cooperates with the base to press against the outer edge of the annular thin-walled component, which will not be described in detail here. The support member 2 can be configured to support the inner circumferential surface of the annular thin-walled member, or it can be configured to support the outer circumferential surface of the annular thin-walled member.

[0024] The following describes a specific embodiment of the present invention. The support member 2 of the support fixture is installed on the base 1, so that the support surface 3 of the support member 2 supports the circumferential surface of the annular thin-walled part, thus completing the assembly of the support fixture. Typically, this support fixture is modified from an existing fixture. The support member 2 provides auxiliary support to the annular thin-walled part, and the positioning and fixing of the annular thin-walled part are still accomplished through the clamping mechanism of the original fixture. In this case, the position of the support member 2 needs to avoid the position where the annular thin-walled part mates with the original clamping mechanism. In this invention, the fluid bladder 4 is used as the support member 2, which can fully contact the circumferential surface of the annular thin-walled part, providing uniform and good support, reducing tool deflection and plastic deformation during processing, and improving the machining accuracy of the annular thin-walled part.

[0025] like Figures 1-2 As shown, in one embodiment disclosed in this application, the fluid bladder 4 has an inlet and an outlet; the inlet of each fluid bladder 4 is connected to the same inlet pipe and is adapted to a booster pump; the outlet of each fluid bladder 4 is connected to the same outlet pipe and is adapted to a discharge pump; the inlet pipe is equipped with a pressure sensor and a first valve, and the outlet pipe is equipped with a second valve. It should be understood that the fluid bladder 4 can be filled with gas or liquid, and generally, filling with liquid is more effective. When the fluid bladder 4 is filled with liquid, a liquid storage chamber needs to be provided, and the inlet pipe, outlet pipe and liquid storage chamber are connected to the liquid storage chamber. In addition, when turning is performed by fixing the tool and rotating the annular thin-walled part, the booster pump, discharge pump and liquid storage chamber can be installed on the base 1 so that the booster pump, discharge pump and liquid storage chamber can rotate together with the base 1 and the annular thin-walled part. By filling the fluid bladder 4 with a booster pump, the circumference of the annular thin-walled component can be supported; by discharging the fluid from the fluid bladder 4 with a discharge pump, the fluid bladder 4 can be released from the annular thin-walled component; this makes the disassembly and assembly of the annular thin-walled component simpler and more convenient.

[0026] Furthermore, such as Figures 1-3As shown, the length, height, and thickness directions of the fluid bladder 4 correspond to the circumferential, axial, and radial directions of the annular thin-walled component, respectively. It should be understood that the length direction of the fluid bladder 4 corresponds to the circumferential direction of the annular thin-walled component, the width direction of the fluid bladder 4 corresponds to the axial direction of the annular thin-walled component, and the thickness direction of the fluid bladder 4 corresponds to the radial direction of the annular thin-walled component. The limiting member 5 is rod-shaped and extends along the height direction of the fluid bladder 4; each fluid bladder 4 is adapted to multiple limiting members 5, and the limiting members 5 constituting the limiting of the same fluid bladder 4 are distributed along the length direction of the fluid bladder 4; each limiting member 5 constituting the limiting of the same fluid bladder 4 is installed on the same mounting base 7, and the mounting base 7 and the base 1 are respectively provided with mounting holes and are fixed together by connecting bolts provided in the corresponding mounting holes. It should be understood that, in order to better maintain the plate-like shape of the fluid bladder 4, the cavity of the fluid bladder 4 can be divided into multiple cylindrical cavities. The cylindrical cavities extend along the height direction of the fluid bladder 4 and are arranged along the length direction of the fluid bladder 4. The sides of adjacent cylindrical cavities are connected through strip-shaped holes extending along the height direction of the fluid bladder 4, and the thickness of the fluid bladder 4 at the cylindrical cavity is greater than the thickness at the strip-shaped hole.

[0027] Furthermore, such as Figures 2-4 As shown, the upper and lower ends of the limiting member 5 are connected to the two ends of the rope 8, and the fluid bladder 4 is bound between the limiting member 5 and the rope 8. The limiting member 5 has an annular groove around its circumference, and the end of the rope 8 is configured as a loop structure and fitted into the annular groove. The limiting member 5 includes two detachably connected upper and lower sections, one of which has a threaded hole and the other has a matching screw. It should be understood that by separating the upper and lower sections of the limiting member 5, the limiting member 5 can be removed from the fluid bladder 4 without separating the rope 8 and the limiting member 5. In this way, the length of the rope 8 can always remain fixed, and the length of the rope 8 does not need to be adjusted after the limiting member 5 and the fluid bladder 4 are disassembled. Alternatively, the flexible rope 8 can be replaced with a binding member made of rigid material, so that the two ends of the binding member are detachably connected to the limiting member 5 to bind the fluid bladder 4.

[0028] Furthermore, such as Figures 1-2As shown, the fluid bladder 4 has reinforcing layers made of elastic plates 6 on the sidewalls corresponding to the annular thin-walled member and the sidewalls corresponding to the limiting member 5. It should be understood that the fluid bladder 4 can be made of flexible or elastic materials such as rubber, and the elastic plates 6 can be fixed to the inner or outer wall surfaces of the aforementioned two sidewalls of the fluid bladder 4. Alternatively, two elastic plates 6 can be used directly as the two sidewalls of the fluid bladder 4, and the remaining part of the fluid bladder 4 can be made of flexible or elastic materials such as rubber; in this case, a groove for accommodating the rope 8 needs to be left on the supporting surface 3 of the elastic plate 6. The elastic plate 6 can be made of elastic polymer materials such as plastic. With the aforementioned structure, the fluid bladder 4, on the one hand, can increase the strength of the fluid bladder 4, especially the supporting surface 3, resulting in better support; on the other hand, the fluid bladder 4 can protect the elastic plate 6, absorbing and relieving the pressure on the elastic plate 6, ensuring uniform force distribution on the elastic plate 6 and preventing breakage.

[0029] Furthermore, such as Figures 4-6 As shown, the limiting member 5 is mounted on the mounting base 7 via the adjusting member 9; the adjusting member 9 includes: an upper horizontal arm 10, a lower horizontal arm 11, and a connecting arm 12 connecting the upper horizontal arm 10 and the lower horizontal arm 11; the upper horizontal arm 10 has a limiting through hole 13 adapted to the limiting member 5, and the top of the lower horizontal arm 11 has a limiting blind hole 14 that supports and limits the lower section of the limiting member 5; the upper horizontal arm 10 has a slot on the side wall of the limiting through hole 13 for the rope 8 to pass through. It should be understood that the adjusting member 9 corresponds one-to-one with the limiting member 5. Furthermore, if the support, positioning and fixing of the annular thin-walled part are completed directly through the support member 2, the annular thin-walled part will apply a circumferential force to the fluid bladder 4 when the annular thin-walled part is turned. At this time, one end of the fluid bladder 4 in the length direction is facing the rotation direction of the annular thin-walled part. A baffle can be installed on the adjusting member 9 at the other end in the length direction of the fluid bladder 4 to support and limit the end face of the fluid bladder 4 at that end, so as to prevent the fluid bladder 4 from deforming.

[0030] Furthermore, such as Figures 5-6 As shown, the mounting base 7 includes: an upper horizontal plate 17, a lower horizontal plate 18, and a vertical plate 19 connecting the upper horizontal plate 17 and the lower horizontal plate 18; the bottom of the upper horizontal plate 17 has a first limiting groove 15 that limits the upper horizontal arm 10, and the top of the lower horizontal plate 18 has a second limiting groove 16 that limits the lower horizontal arm 11; the first limiting groove 15 and the second limiting groove 16 extend radially along the annular thin-walled member and penetrate the mounting base 7.

[0031] Furthermore, such as Figures 5-6As shown, the vertical plate 19 has an adjusting through hole 20 extending radially along the annular thin-walled member; an adjusting bolt 21 passes through the adjusting through hole 20 from the side facing the annular thin-walled member to the side away from the annular thin-walled member, and is fitted with a fastening nut 22; the connecting arm 12 of the adjusting member 9 is located on the side of the vertical plate 19 away from the annular thin-walled member; the connecting arm 12 of the adjusting member 9 has a positioning hole 23 for the adjusting bolt 21 to pass through, and positioning nuts 24 are respectively fitted on both sides of the shank of the adjusting bolt 21. It should be understood that the adjusting bolt 21 can be fixed to the vertical plate 19 of the mounting base 7 by the fastening nut 22, and the adjusting member 9 can be fixed to the adjusting bolt 21 by the positioning nut 24. Tighten the positioning nut 24 to adjust its position on the adjusting bolt 21, and move the upper horizontal arm 10 and lower horizontal arm 11 of the adjusting member 9 along the first limiting groove 15 and the second limiting groove 16 respectively. This allows adjustment of the position of the limiting member 5, thereby adjusting the position and curvature of the fluid bladder 4 to accommodate annular thin-walled parts of different sizes. This design is suitable not only for mass production of annular thin-walled parts on a production line but also for laboratory use, allowing for process testing of various sizes of annular thin-walled parts using the same set of support fixtures.

[0032] This invention also provides a milling apparatus having a support fixture with the aforementioned structure. It should be understood that when the support fixture provided by this invention is used for milling, the position of the support fixture needs to avoid the milling location of the annular thin-walled part.

[0033] This invention also provides a turning apparatus having the aforementioned support fixture. It should be understood that the support fixture provided by this invention uses a fluid bladder 4 as a support member 2, and is mainly used for turning operations. During turning, the tool will feed along the axial direction of the annular thin-walled part. This support fixture can completely cover the circumferential surface of the annular thin-walled part along the axial direction, and simultaneously cover the circumferential surface of the annular thin-walled part at equal intervals along the circumferential direction, thereby providing sufficient support for the annular thin-walled part during turning operations.

[0034] While specific embodiments of the present invention have been described above, those skilled in the art should understand that various changes or modifications can be made to these embodiments without departing from the principles and essence of the present invention, and all such changes and modifications fall within the protection scope of the present invention.

Claims

1. A supporting fixture, characterized in that, include: A base (1) for mounting annular thin-walled components; and A support member (2) that can be detachably installed on the base (1); in, The support member (2) is provided in multiple parts and is evenly distributed along the circumference of the annular thin-walled member installed on the base (1); The support member (2) provides support to the circumferential surface of the annular thin-walled member, and the support surface (3) of the support member (2) is configured as an arc surface adapted to the annular thin-walled member; The support member (2) is a plate-shaped fluid capsule (4). The fluid bag (4) is provided with a limiting member (5) on the side facing away from the annular thin-walled member, which limits the fluid bag (4). The fluid bag (4) is installed on the base (1) through the limiting member (5). The length direction, height direction, and thickness direction of the fluid bladder (4) correspond to the circumferential, axial, and radial directions of the annular thin-walled component, respectively. The limiting member (5) is rod-shaped and extends along the height direction of the fluid bladder (4); Each fluid capsule (4) is adapted to multiple limiting components (5); Each limiting element (5) constraining the same fluid capsule (4) is distributed along the length direction of the fluid capsule (4); Each limiting element (5) that limits the same fluid bladder (4) is installed on the same mounting base (7); The mounting base (7) and the base (1) are respectively provided with mounting holes and are fixedly connected by connecting bolts provided in the corresponding mounting holes; The upper and lower ends of the limiting member (5) are connected to the two ends of the rope (8), and the fluid bag (4) is bound between the limiting member (5) and the rope (8). The limiting member (5) has an annular groove around its circumference, and the end of the rope (8) is configured as a loop structure and is sleeved in the annular groove. The limiting member (5) includes two detachably connected upper and lower sections, one of which is provided with a threaded hole and the other is provided with a matching screw. The limiting member (5) is installed on the mounting base (7) via the adjusting member (9); The adjusting member (9) includes: an upper horizontal arm (10), a lower horizontal arm (11), and a connecting arm (12) connecting the upper horizontal arm (10) and the lower horizontal arm (11). The upper cross arm (10) has a limiting through hole (13) adapted to the limiting member (5), and the top of the lower cross arm (11) has a limiting blind hole (14) that supports and limits the lower section of the limiting member (5). The upper cross arm (10) has a slot on the side wall of the limiting through hole (13) for the rope (8) to pass through.

2. The support fixture according to claim 1, characterized in that: The fluid bladder (4) has an inlet and an outlet; the inlet of each fluid bladder (4) is connected to the same inlet pipe and is adapted to a booster pump; the outlet of each fluid bladder (4) is connected to the same outlet pipe and is adapted to a discharge pump. The inlet pipe is equipped with a pressure sensor and a first valve, and the outlet pipe is equipped with a second valve.

3. The supporting fixture according to claim 1, characterized in that: The fluid bladder (4) is provided with a reinforcing layer made of an elastic plate (6) on the side wall corresponding to the annular thin-walled member and the side wall corresponding to the limiting member (5).

4. The supporting fixture according to claim 1, characterized in that: The mounting base (7) includes: an upper horizontal plate (17), a lower horizontal plate (18), and a vertical plate (19) connecting the upper horizontal plate (17) and the lower horizontal plate (18). The bottom of the upper horizontal plate (17) has a first limiting groove (15) that limits the upper horizontal arm (10), and the top of the lower horizontal plate (18) has a second limiting groove (16) that limits the lower horizontal arm (11). The first limiting groove (15) and the second limiting groove (16) extend radially along the annular thin-walled member and penetrate the mounting base (7).

5. The supporting fixture according to claim 4, characterized in that: The vertical plate (19) has an adjustable through hole (20) extending radially along the annular thin-walled member. The vertical plate (19) is provided with adjusting bolts (21) along the adjusting through hole (20) from the side facing the annular thin-walled member to the side away from the annular thin-walled member, and is fitted with fastening nuts (22). The connecting arm (12) of the adjusting member (9) is located on the side of the vertical plate (19) facing away from the annular thin-walled member; The connecting arm (12) of the adjusting member (9) has a positioning hole (23) through which the adjusting bolt (21) passes, and the shank of the adjusting bolt (21) is fitted with positioning nuts (24) on both sides of the positioning hole (23).

6. A milling device, characterized in that: It has the support fixture described in any one of claims 1 to 5.

7. A turning apparatus, characterized in that: It has the support fixture described in any one of claims 1 to 5.

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