Positioning jig for special-shaped shell
By employing the staggered structure of internal and external clamping and limiting components in the irregular shell positioning fixture, the problems of positioning accuracy and force uniformity of irregular shells are solved, achieving high-precision positioning and convenient processing of irregular shells.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-04-07
AI Technical Summary
Existing irregular shell positioning fixtures have shortcomings in terms of positioning accuracy and uniform force distribution on irregular sidewalls. In particular, when the length of the irregular sidewalls is long, it is difficult to achieve high-precision positioning and deformation is easily caused.
The structure employs a staggered arrangement of multiple inner limiting components and outer clamping components. A power mechanism drives the clamping components to cooperate with the limiting components to clamp the irregular sidewall, ensuring the overall uniformity of force and positioning accuracy of the irregular sidewall.
It improves the positioning accuracy and processing convenience of irregularly shaped shells, reduces the requirements for the shape and position accuracy of clamping and limiting parts, and avoids deformation of irregularly shaped sidewalls.
Smart Images
Figure CN121798531A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of positioning fixture technology, and in particular to a positioning fixture for an irregularly shaped shell. Background Technology
[0002] Irregularly shaped housings have become popular components in modern electronic products. Consequently, the positioning accuracy requirements for fixtures used in machining these housings have also increased. Irregularly shaped housings often have non-straight, irregularly shaped sidewalls, for example... Figure 1 As shown, the irregular shell (A) has irregular sidewalls (A1), first sidewall (A2), second sidewall (A3) and third sidewall (A4) connected end to end in sequence. The irregular sidewall (A1) has an irregular structure (A13) with obvious convex and concave structure.
[0003] To prevent deformation of irregular sidewalls, inner and outer positioning components that perfectly mimic the shape of the irregular sidewall can be used to position the inner and outer surfaces of the irregular sidewall in a seamless manner. However, this positioning method requires high precision in the shape and size of the inner and outer positioning components, as well as high positional precision between them. Especially when the irregular sidewall is long, it is not easy to fit properly, which affects the positioning accuracy and can also easily lead to uneven stress on the irregular sidewall, resulting in deformation. Summary of the Invention
[0004] The purpose of this invention is to provide a positioning fixture for irregularly shaped shells that can ensure the overall positioning accuracy of the irregularly shaped shells.
[0005] To achieve the above-mentioned objective, this invention proposes a positioning fixture for an irregularly shaped shell, wherein the irregularly shaped shell is annular and has irregularly shaped sidewalls; the positioning fixture for the irregularly shaped shell includes:
[0006] The first limiting member and the second limiting member are located side by side inside the irregularly shaped shell on one side corresponding to the irregularly shaped sidewall.
[0007] The first clamping member and the second clamping member are located side by side on the outside of the irregular shell, corresponding to the other side of the irregular sidewall;
[0008] A first power mechanism is used to drive the first clamping member to move so as to cooperate with the first limiting member to clamp part of the irregular sidewall;
[0009] The second power mechanism is used to drive the second clamping member to move so as to simultaneously cooperate with the first limiting member and the second limiting member to clamp part of the irregular sidewall.
[0010] The positioning fixture for the irregularly shaped shell according to claim 1 is characterized in that: the irregularly shaped sidewall has a first planar structure, an irregularly shaped structure and a second planar structure connected in sequence;
[0011] The first clamping member cooperates with the first limiting member to clamp the first planar structure and part of the irregular structure;
[0012] The second clamping member cooperates with both the first limiting member and the second limiting member to clamp the second planar structure and part of the irregular structure.
[0013] In one embodiment of the present invention, the length of the second planar structure of the irregular sidewall is less than the length of the first planar structure; the irregular shell also has a first sidewall, the first sidewall being connected to the second planar structure of the irregular sidewall; the positioning fixture of the irregular shell further includes:
[0014] The third limiting member is located inside the irregularly shaped shell on one side corresponding to the first sidewall;
[0015] The third clamping member is located on the other side of the irregularly shaped shell, corresponding to the first sidewall.
[0016] A third power mechanism is used to drive the third clamping member to move so as to simultaneously cooperate with the second limiting member and the third limiting member to clamp the first sidewall.
[0017] In one embodiment of the present invention, the third power mechanism includes a third elastic member and a third pulling assembly connected to the third clamping member; the third elastic member is used to drive the third clamping member to move closer to the first sidewall to provide a clamping force on the first sidewall; the third pulling assembly is used to pull the third clamping member away from the first sidewall.
[0018] In one embodiment of the present invention, the irregularly shaped housing further includes a second sidewall opposite to the irregularly shaped sidewall; the positioning fixture for the irregularly shaped housing further includes:
[0019] The fourth limiting member is located inside the irregularly shaped shell on one side corresponding to the second sidewall;
[0020] The fourth clamping member is located on the other side of the irregularly shaped shell, corresponding to the second sidewall.
[0021] A fourth power mechanism is used to drive the fourth clamping member to move so as to simultaneously cooperate with the third and fourth limiting members to clamp the second sidewall.
[0022] In one embodiment of the present invention, the fourth limiting member is fixedly disposed, and the positions of the first limiting member, the second limiting member and the third limiting member are adjustable.
[0023] In one embodiment of the present invention, the fourth clamping member cooperates with the fourth limiting member to clamp a portion of the second sidewall; the positioning fixture for the irregularly shaped housing further includes:
[0024] The fifth clamping member is located side by side with the fourth clamping member on the other side of the outer side of the irregularly shaped shell, corresponding to the second sidewall.
[0025] The fifth power mechanism is used to drive the fifth clamping member to move and cooperate with the fourth limiting member to clamp part of the second sidewall.
[0026] In one embodiment of the present invention, the irregularly shaped housing further includes a third sidewall connected to the second planar structure of the irregularly shaped sidewall; the positioning fixture of the irregularly shaped housing further includes:
[0027] The sixth clamping member is located on the outside of the irregularly shaped shell on the side corresponding to the third sidewall;
[0028] The sixth power mechanism is used to drive the sixth clamping member to move so as to simultaneously cooperate with the first limiting member and the fourth limiting member to clamp the third sidewall.
[0029] In one embodiment of the present invention, the first power mechanism includes a first elastic element and a first pulling assembly connected to the first clamping element; the second power mechanism includes a second elastic element and a second pulling assembly connected to the second clamping element.
[0030] The first elastic element is used to drive the first clamping member to move closer to the irregular sidewall to provide clamping force on the irregular sidewall; the first pulling assembly is used to drive the first clamping member to move away from the irregular sidewall.
[0031] The second elastic element is used to drive the second clamping member to move closer to the irregular sidewall to provide clamping force on the irregular sidewall; the second pulling component is used to drive the second clamping member to move away from the irregular sidewall.
[0032] In one embodiment of the invention, a support member and an auxiliary positioning member are further included; the support member is used to support one end face of the irregularly shaped shell, and the auxiliary positioning member is used to press the irregularly shaped shell onto the support member from the other end face of the irregularly shaped shell.
[0033] Compared with the prior art, the present invention has the following beneficial effects: According to some embodiments of the present invention, a positioning fixture for an irregularly shaped shell, the irregularly shaped shell having an irregularly shaped sidewall; the positioning fixture for the irregularly shaped shell includes: a first limiting member and a second limiting member, arranged side-by-side inside the irregularly shaped shell corresponding to one side of the irregularly shaped sidewall; a first clamping member and a second clamping member, arranged side-by-side outside the irregularly shaped shell corresponding to the other side of the irregularly shaped sidewall; a first power mechanism for driving the first clamping member to move, so as to cooperate with the first limiting member to clamp part of the irregularly shaped sidewall; a second power mechanism for driving the second clamping member to move, so as to cooperate with the first limiting member and the second limiting member to clamp part of the irregularly shaped sidewall simultaneously. The present invention uses multiple inner limiting members and multiple outer clamping members for the same irregularly shaped sidewall, which is beneficial to ensuring the fit between the corresponding irregularly shaped sidewall and the positioning component. Compared with the structure of clamping the irregularly shaped sidewall with inner and outer positioning members, the relative positional accuracy requirements of the clamping members and limiting members are lower, and it is also easier to process. At the same time, the first limiting member cooperates with both the first clamping member and the second clamping member, and the second clamping member cooperates with both the first limiting member and the second limiting member. That is, the positioning structure of the inner and outer limiting members and clamping members is used for the same irregular sidewall, so that the irregular sidewall is subjected to uniform force as a whole. Attached Figure Description
[0034] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0035] Figure 1 This is a schematic diagram of the irregularly shaped shell structure;
[0036] Figure 2 This is a schematic diagram of the positioning fixture for irregularly shaped shells;
[0037] Figure 3 yes Figure 2 Top view;
[0038] Figure 4 This is a schematic diagram of the positioning fixture in a clamped state after removing the auxiliary positioning components and the base;
[0039] Figure 5 yes Figure 4 Top view;
[0040] Figure 6 yes Figure 5 Enlarged view of part I in the image;
[0041] Figure 7 yes Figure 5 Enlarged view of part II;
[0042] Figure 8This is a schematic diagram of the positioning fixture with the auxiliary positioning components and base in the open state. Detailed Implementation
[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.
[0044] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.
[0045] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0046] The terms "first," "second," etc., used in this disclosure are used to distinguish similar objects and not to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this disclosure can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more.
[0047] Example 1
[0048] See Figures 1-8 This embodiment discloses a positioning fixture for an irregularly shaped shell. The irregularly shaped shell A is annular and has an irregularly shaped sidewall A1. The positioning fixture for the irregularly shaped shell includes: a first limiting member 1, a second limiting member 2, a first clamping member 5, a second clamping member 6, a first power mechanism 51, and a second power mechanism 61.
[0049] The first limiting member 1 and the second limiting member 2 are located side by side inside the irregular shell A, corresponding to one side of the irregular sidewall A1;
[0050] The first clamping member 5 and the second clamping member 6 are located side by side outside the irregular shell A, corresponding to the other side of the irregular sidewall A1;
[0051] The first power mechanism 51 is used to drive the first clamping member 5 to move so as to cooperate with the first limiting member 1 to clamp part of the irregular sidewall A1.
[0052] The second power mechanism 61 is used to drive the second clamping member 6 to move, so as to simultaneously cooperate with the first limiting member 1 and the second limiting member 2 to clamp part of the irregular sidewall A1. It can be understood that the portions of each limiting member and clamping member that fit against the sidewall of the irregular shell A are configured to conform to the corresponding sidewall shape for reliable fitting and limiting.
[0053] For the same irregular sidewall A1, multiple inner limiting members (first limiting member 1 and second limiting member 2) and multiple outer clamping members (first clamping member 5 and second clamping member 6) are used. This helps to ensure the fit between the corresponding irregular sidewall and the positioning component. Compared with the structure that clamps the irregular sidewall across the entire surface using inner and outer positioning members, the relative positional accuracy requirements of the clamping members and limiting members are lower, and it is also easier to process. At the same time, the first limiting member 1 cooperates with both the first clamping member 5 and the second clamping member 6, and the second clamping member 6 cooperates with both the first limiting member 1 and the second limiting member 2. That is, the positioning structure of staggered cooperation between inner and outer limiting members and clamping members is used for the same irregular sidewall, so that the irregular sidewall is subjected to uniform force as a whole.
[0054] It is understood that the irregular sidewall is not a straight sidewall; for example, it can be a combination of planar structures on different planes, a combination of planar and irregular structures, or simply an irregular structure. Furthermore, the irregular structure can be a convex structure and / or a concave structure. The convex and concave structures can be arc structures or other structures with edges or corners. The convex and concave structures can be connected or spaced apart, and their number is unlimited.
[0055] Figure 1In the illustrated embodiment, the irregularly shaped shell A is strip-shaped, comprising irregularly shaped sidewalls A1, A2, A3, and A4 connected end-to-end, with adjacent sidewalls connected by arcuate walls; the irregularly shaped sidewalls A1 and A3 correspond to the long sides of the irregularly shaped shell A. The irregularly shaped sidewall A includes a first planar structure A11, a second planar structure A12, and an irregularly shaped structure A13 connecting the first planar structure A11 and the second planar structure A12; the irregularly shaped structure A includes a first arcuate portion A131 connected to one end of the first planar structure A and protruding outwards from the irregularly shaped shell A, and a second arcuate portion A132 connected to one end of the second planar structure A and the other end of the first arcuate portion, protruding inwards from the irregularly shaped shell A.
[0056] Furthermore, in some embodiments, the first planar structure A11 and the second planar structure A12 are not coplanar; the first sidewall A2, the second sidewall A3, and the third sidewall A4 are arranged at 90 degrees between adjacent sidewalls; the first planar structure A11 of the irregular sidewall A1, starting from the end connecting with the third sidewall A4, is inclined from the inside of the irregular shell A outward, and is at an angle greater than 90 degrees with the third sidewall A4; the second planar structure A12 of the irregular sidewall A1 is arranged at 90 degrees with the first sidewall A2.
[0057] Specifically, in some embodiments, the positioning fixture for the irregularly shaped shell includes a base 43 and a base 41 disposed on the base 43, which are connected by bolts and / or positioning pins; the first limiting member 1 and the second limiting member 2 are adjustablely and movably disposed on the base 41. It can be understood that the "movable" means that when the first limiting member 1 and the second limiting member 2 need to be adjusted, after the locking components disposed on them are released, they can flexibly move relative to the base 41, move to fit against the interior of the irregularly shaped shell A or move to a certain distance away from the irregularly shaped shell, and be locked and fixed on the base 41 at the corresponding position by the locking components; the first clamping member 5 and the second clamping member 6 are slidably disposed on the base 41.
[0058] Specifically, the irregularly shaped shell A is fitted onto the first limiting member 1 and the second limiting member 2. Then, the first limiting member 1 and the second limiting member 2 are adjusted to fit the inner side surface of the irregularly shaped sidewall A1 corresponding to the irregularly shaped shell A, and the limiting positions of the first limiting member 1 and the second limiting member 2 are locked. The first power mechanism 51 and the second power mechanism 52 drive the first clamping member 5 and the second clamping member 6 to move toward the outer side surface of the irregularly shaped sidewall A1 and finally maintain them in the clamping position.
[0059] It is understood that the first clamping member 5 and the second clamping member 6 can operate synchronously or asynchronously; the first clamping member 5 and the second clamping member can jointly clamp the entire outer wall of the irregular sidewall A1, or they can jointly clamp a portion of the outer wall of the irregular sidewall A1. Furthermore, it is understood that the position and size of the aforementioned portions can be selected and designed according to the positioning requirements of the irregular shell A in the application scenario.
[0060] In some embodiments, such as Figure 1 , Figure 4 , Figures 7-8 As shown, the irregular sidewall A1 has a first planar structure A11, an irregular structure A13, and a second planar structure A12 connected in sequence.
[0061] The first clamping member 5 cooperates with the first limiting member 1 to clamp the first planar structure A11 and part of the irregular structure A13;
[0062] The second clamping member 6 cooperates with the first limiting member 1 and the second limiting member 2 to clamp the second planar structure A12 and part of the irregular structure A13.
[0063] Two clamping members are used at each end of the irregular structure A13 for fixation, thus preventing the irregular structure A13 from shifting or deviating during clamping. Simultaneously, the two clamping members are constrained by the same limiting member using the same positioning reference, avoiding tensile or compressive deformation of the irregular structure A13 due to uneven force. The limiting member provides rigid reference constraint from one side of the irregular structure, while the other side uses dispersed clamping members. Compared to using clamping members that are completely fitted to the irregular structure on the outer side, this reduces the requirements for the shape and positional accuracy of the clamping members, while ensuring reliable clamping of the irregular structure from both sides.
[0064] Specifically, in some embodiments, the first clamping member 5 and the second clamping member 6 are arranged side by side at a certain distance, and the outer surface of the irregular sidewall A1 is jointly clamped by the first clamping member 5 and the second clamping member 6; see Figure 7 The clamping boundary between the first clamping member 5 and the second clamping member 6 is located at the first arc portion A131 of the irregular structure A13. See Figures 7-8The clamping surface 5111 of the first clamping member 5 is modeled after the first planar structure A11 of the irregular sidewall A1 and a portion of the first arc portion A131 of the irregular structure A13. A protrusion E is formed on one end of the first clamping member 5 near the second clamping member 6, which fits into a portion of the first arc portion A131. The clamping surface 6111 of the second clamping member 6 is modeled after the second planar structure A12 of the irregular sidewall A1 and the second arc portion A132 of the irregular structure A13. Since neither the first clamping member 5 nor the second clamping member 6 needs to have two opposing arc surfaces to fit into the first and second arc portions A131 of the irregular structure, the requirements for their shape and dimensional accuracy are lower.
[0065] Furthermore, in some embodiments, the radius of the first arc portion A131 is smaller than the radius of the second arc portion A132. The first arc portion A131 constitutes a component of the irregular structure A13, and also forms a transitional connection structure between the first planar structure A11 and the irregular structure A13. By selectively fitting the second arc portion A132, which has a larger contact area, it is beneficial to ensure positioning accuracy.
[0066] In some embodiments, such as Figure 1 , Figure 4 , Figure 5 , Figure 8 As shown, the length of the second planar structure A12 of the irregular sidewall A1 is less than the length of the first planar structure A11; the irregular shell A also has a first sidewall A2, which is connected to the second planar structure A12 of the irregular sidewall A1; the positioning fixture of the irregular shell also includes a third limiting member 3, a third clamping member 7 and a third power mechanism 71.
[0067] The third limiting member 3 is located inside the irregular shell A on one side corresponding to the first side wall A2; the third clamping member 7 is located outside the irregular shell A on the other side corresponding to the first side wall A2; the third power mechanism 71 is used to drive the third clamping member 7 to move so as to cooperate with the second limiting member 2 and the third limiting member 3 to clamp the first side wall A2.
[0068] Based on the preceding text, the second limiting member 2 cooperates with both the second clamping member 6 and the third clamping member 7, and the third clamping member 7 cooperates with both the second limiting member 2 and the third limiting member 3. Between the irregular sidewall A1 and the first sidewall A2, a staggered positioning structure is further employed to reliably position the relatively complex corners of the irregular shell shape. The mutual clamping cooperation between the positioning components ensures the angle between the first sidewall A2 and the second sidewall A3, thereby reducing or avoiding the influence of the first sidewall on the irregular sidewall, while simultaneously ensuring the positioning accuracy of both the first sidewall and the irregular sidewall.
[0069] Furthermore, in some embodiments, such as Figures 3-4 The third power mechanism 71 includes a third elastic element 711 and a third pulling component 712; the third elastic element 711 is used to drive the third clamping member 7 to move closer to the first side wall A2 and provide a clamping force on the first side wall A2; the third pulling component 712 pulls the third clamping member 7 away from the first side wall A2.
[0070] Specifically, such as Figure 5 , Figure 8 As shown, the upper end surface of the base 41 is provided with a sliding groove 411. The sliding groove 411 extends inward from the side end surface of the base 41 to the corresponding limiting member position. The third clamping member 7 is slidably disposed in the sliding groove 411 via a slider 713. Further, the third pulling assembly 712 includes a switch 7121 and a connector 7122. The switch 7121 is connected to the slider 713 and / or the third clamping member 7 via the connector 7122. By operating the switch 7121 to pull the connector 7122 and the slider 713, the third clamping member 7 moves away from the workpiece. Furthermore, a stop 412 is provided on the upper surface of the base 41. The stop 412 is located at the upper end of the sliding groove 411 away from the limiting member 412. One end of the third elastic member 711 is connected to the stop 412, and the other end is connected to the slider 713 and / or the third clamping member 7. The switch member 7121 and the third elastic member 711 are respectively located on two opposite end faces of the stop 412. When the switch member 7121 is operated to pull the connecting member 7122 and the slider 713, the slider 713 compresses the third elastic member 71. After the switch member is released, the third elastic member 71 elastically drives the slider 713 to move the third clamping member 7 closer to the first sidewall A2 and provide an elastic clamping force on the first sidewall A2. Using an elastic member as the clamping force, the elastic effect can further prevent damage to the product and maintain the clamping force at all times.
[0071] It is understandable that the switch 7122 can be operated manually or by a power mechanism, such as a cylinder or an electric actuator.
[0072] Specifically, in some embodiments, the switch is manually operated, with a hand control 7121. One end of the hand control 7121 is a free end, and the other end is a rotating end of a cam structure. The rotating end is hinged to the connecting member by a hinge shaft and circumferentially abuts against the end face of the stop member 412. By rotating the hand control 7121, the structural change of the cam creates a pulling distance between the hand control 7121 and the connecting member and other components, thereby controlling the third clamping member 7 to move away from the first side wall A2.
[0073] It is understood that the third clamping member 7 and the slider 713 can be integrally formed or separately connected. The third elastic member 711 can be optionally set as a spring.
[0074] In some embodiments, such as Figures 5-6 As shown, the first sidewall A2 of the irregular shell A is connected to the irregular sidewall A1 by an arc wall A5; the interior of the arc wall A5 is limited by the second limiting member 2; the exterior of the arc wall A5 and the portion of the first sidewall A2 adjacent to the arc wall A5 does not contact the clamping member.
[0075] The first sidewall A2 is the sidewall closest to the irregular structure A13 of the irregular sidewall A1 in the overall structure of the irregular shell A. Its stress process is directly related to the irregular structure A13. By using an internal support and external loose clamping method for the corner deformation part between the first sidewall A12 and the irregular sidewall A11, the requirements for the shape and dimensional accuracy of the contact surface between the second limiting member 6 and the arc wall A5 can be reduced. This avoids the arc wall A5 from being deformed due to direct compression, which would further affect the positioning of the irregular sidewall. In addition, it also reduces the shape complexity of the third clamping member 7.
[0076] In some embodiments, such as Figures 2-5 , Figure 8 As shown, the irregularly shaped housing A further includes a second sidewall A3 opposite to the irregularly shaped sidewall A1; the positioning fixture for the irregularly shaped housing further includes a fourth limiting member 4, a fourth clamping member 8, and a fourth power mechanism 81. The fourth limiting member 4 is located inside the irregularly shaped housing A on the side corresponding to the second sidewall A3; the fourth clamping member 8 is located outside the irregularly shaped housing A on the other side corresponding to the second sidewall A3; the fourth power mechanism 81 is used to drive the fourth clamping member 8 to move, so as to simultaneously cooperate with the third limiting member 3 and the fourth limiting member 4 to clamp the second sidewall A3.
[0077] Based on the preceding text, the third limiting member 3 cooperates with both the third clamping member 7 and the fourth clamping member 8, and the fourth clamping member 8 cooperates with both the third limiting member 3 and the fourth limiting member 4. Between the first sidewall A2 and the second sidewall A3, a positioning structure with overlapping and sequential engagement is also employed, ensuring reliable positioning of the relatively complex corners of the irregularly shaped shell. The mutual clamping and engaging of the positioning components guarantees the angle between the first sidewall A2 and the second sidewall A3.
[0078] Furthermore, in some embodiments, such as Figures 3-4The fourth power mechanism 81 has a similar drive structure to the third power mechanism. Specifically, it includes a fourth elastic element and a fourth pulling assembly; the fourth elastic element drives the fourth clamping member to move closer to the second sidewall A3 and provides a clamping force on the second sidewall A3; the fourth pulling assembly pulls the fourth clamping member away from the second sidewall A3.
[0079] Specifically, a sliding groove is provided on the upper surface of the base 41 corresponding to the position of the fourth power mechanism 81. The sliding groove extends inward from the side surface of the base 41 to the position of the corresponding limiting member. The fourth clamping member is slidably disposed in the sliding groove via a slider. Further, the fourth pulling assembly includes a switch and a connector. The switch is connected to the slider and / or the fourth clamping member via the connector. By manipulating the switch to pull the connector and the slider, the fourth clamping member moves away from the workpiece. Further, a stop is provided on the upper surface of the base 31. The stop is located on the upper end of the sliding groove away from the limiting member. One end of the fourth elastic member is connected to the stop, and the other end is connected to the slider and / or the fourth clamping member. The switch and the fourth elastic member are respectively located on two opposite end faces of the stop. When the switch is operated to pull the connector and the slider, the slider compresses the fourth elastic element. After the switch is released, the fourth elastic element elastically drives the slider to move the fourth clamping member closer to the second sidewall and provide elastic clamping force on the second sidewall.
[0080] It is certain that the use of elastic elements as clamping force here also serves to prevent damage to the product and to maintain the clamping force at all times.
[0081] It is understandable that the switching device can be operated manually or by a power mechanism, such as a cylinder or an electric actuator.
[0082] Specifically, in some embodiments, the switch is manually operated. A hand control is provided, with one end being a free end and the other end being a rotating end of a cam structure. The rotating end is hinged to the connecting member via a hinge shaft and circumferentially abuts against the end face of the stop member. By rotating the hand control, the structural change of the cam creates a pulling distance between the hand control and components such as the connecting member, thereby controlling the fourth clamping member to move away from the second sidewall A3.
[0083] It is understood that the fourth clamping element and the slider can be integrally formed or connected separately. The fourth elastic element can be a spring.
[0084] Specifically, there are two springs. It is understood that the number of springs can be selected according to the size of the clamping member or the clamping force requirement, and the selection of the number of springs is not limited to the fourth power mechanism 81. Other power mechanisms with similar structures can also choose to have two, three, four, etc.
[0085] In some embodiments, such as Figures 2-5 , Figure 8 As shown, the fourth limiting member 4 is fixedly installed, while the first limiting member 1, the second limiting member 2, and the third limiting member 3 are movably installed.
[0086] The fourth limiting component 4 is set as a fixed setting, which limits the relative positions and installation relationships of all clamping and limiting components of the positioning fixture, ensuring the positioning consistency of batch irregular shell workpieces.
[0087] Specifically, the first limiting member 1, the second limiting member 2, the third limiting member 3, and the fourth limiting member 4 are all inside the irregular-shaped shell. With the fourth limiting member 4 as the reference, the positions of the first limiting member 1, the second limiting member 2, and the third limiting member 3 are adjusted to ensure the accuracy of the positioning inside the irregular-shaped shell, and further define the positioning position between the clamping member and the limiting member, so as to ensure the overall positioning accuracy of the irregular-shaped shell.
[0088] The activities described above have already been introduced. It is understood that the aforementioned fixation is relative to the activity and its position cannot be adjusted. In some embodiments, such as... Figure 4 As shown, the positioning fixture for the irregularly shaped shell also includes a mounting base 413 for mounting limiting members. The first limiting member 1, the second limiting member 2, and the third limiting member 3 are movably mounted on the mounting base 413 by bolts and are adjustable in position. The fourth limiting member 4 is integrally formed with the mounting base 413. It can be understood that the mounting base 413 has adjustment structures, such as sliding grooves and multiple positioning holes, corresponding to the positions of the first limiting member 1, the second limiting member 2, and the third limiting member 3. In some embodiments, the limiting member can have a through hole slightly larger than the bolt diameter to allow for fine-tuning of the limiting member's position, reliably supporting the inner surface of the irregularly shaped shell. The bolts can be screwed into the mounting base 413, and the position of the limiting member is fixed by tightening the bolts.
[0089] It is understandable that the first limiting member 1, the second limiting member 2, and the third limiting member 3 do not necessarily have to be position-adjustable; they can also be fixed, so that their positional accuracy is not easily changed.
[0090] In some embodiments, such as Figures 2-5 , Figure 8As shown, the fourth clamping member 8 cooperates with the fourth limiting member 4 to clamp a portion of the second sidewall A3; the positioning fixture of the irregularly shaped shell also includes a fifth clamping member 9 and a fifth power mechanism 91. The fifth clamping member 9 and the fourth clamping member 8 are located side by side on the outside of the irregularly shaped shell A, corresponding to the other side of the second sidewall A3; the fifth power mechanism 91 is used to drive the fifth clamping member 9 to move, cooperating with the fourth limiting member 4 to clamp a portion of the second sidewall A3, and away from the second sidewall A3.
[0091] In some embodiments, the fifth clamping member 9 and the fifth power mechanism 91 may be omitted, depending on the dimensions of the second sidewall A3.
[0092] Understandably, for larger sidewalls, see Figure 4 As shown, by setting the fifth clamping member 9 and the fourth clamping member 8 to cooperate with the fourth limiting member 4, the requirements for the position and size accuracy of the clamping members can be reduced, and the positioning accuracy of the positioning fixture for the irregular shell A can be guaranteed.
[0093] Furthermore, in some embodiments, such as Figure 4 As shown, the specific structure of the fifth power mechanism 91 and its installation relationship on the base 41 are the same as those of the fourth power mechanism 81. It can be understood that, as Figure 4 As shown, the switches of the fifth power mechanism 91 and the fourth power mechanism 81 are both hand controls. To adapt to the installation space, the hand controls are set opposite to each other and rotate in opposite directions. However, this difference in installation does not constitute a difference in the power mechanisms.
[0094] It is also understandable that the fifth power mechanism 91 and the fourth power mechanism 81 may be different.
[0095] In some embodiments, such as Figures 2-5 , Figure 8 As shown, the irregularly shaped housing A also includes a third sidewall A4 connected to the second planar structure A12 of the irregularly shaped sidewall A1; the positioning fixture of the irregularly shaped housing also includes a sixth clamping member 10 and a sixth power mechanism 101.
[0096] The sixth clamping member 10 is located outside the irregular shell A on the side corresponding to the third side wall A4; the sixth power mechanism 101 is used to drive the sixth clamping member 10 to move so as to cooperate with the first limiting member 1 and the fourth limiting member 4 to clamp the third side wall A4.
[0097] In some embodiments, such as Figures 2-5 , Figure 8As shown, the first power mechanism 51 includes a first elastic element 511 and a first pulling assembly 512; the second power mechanism 61 includes a second elastic element 611 and a second pulling assembly 612; the first elastic element 511 is used to drive the first clamping member 5 to move closer to the irregular sidewall A1 and provide a clamping force on the irregular sidewall A1; the first pulling assembly 512 is used to drive the first clamping member 5 to move away from the irregular sidewall A1;
[0098] The second elastic member 611 is used to drive the second clamping member 6 to move closer to the irregular sidewall A1 and provide clamping force on the irregular sidewall A1; the second pulling component 612 is used to drive the second clamping member 6 to move away from the irregular sidewall A1.
[0099] Specifically, in some embodiments, such as Figures 2-5 , Figure 8 As shown, the upper end face of the base 41 is provided with sliding grooves corresponding to the positions of the first power mechanism 51 and the second power mechanism 61. The sliding grooves extend inward from the side end face of the base 41 to the corresponding limiting member positions. The first clamping member 5 and the second clamping member 6 are both slidably disposed in the sliding grooves by means of sliders.
[0100] Furthermore, the first pulling component 512 and the second pulling component 612 have the same structure, both including a switch and a connector. The switch is connected to the slider and / or the clamping component through the connector. By operating the switch to pull the connector and the slider, the clamping component is moved away from the workpiece.
[0101] Furthermore, such as Figure 5 , Figure 8 As shown, a stop 513 is provided on the upper surface of the base 31. The stop 513 is located on the upper end of the two sliding grooves away from the limiting member. One end of the first elastic member 511 and the second elastic member 611 are connected to the same end face of the same stop 513, and the other end is connected to the corresponding slider and / or clamping member, respectively. The switch member and the elastic member are respectively located on two opposite end faces of the stop 513. When the switch member is operated to pull the connecting member and the slider, the slider compresses the elastic member. After the switch member is released, the elastic member elastically drives the slider to move the corresponding clamping member closer to the irregular sidewall A1 and provide elastic clamping force on the irregular sidewall A1.
[0102] It is understandable that the switching device can be operated manually or by a power mechanism, such as a cylinder or an electric actuator.
[0103] Specifically, in some embodiments, the switching components of the first pulling assembly 512 and the second pulling assembly 612 are both manually operated. A hand control is provided, with one end being a free end and the other end being a rotating end of a cam structure. The rotating end is hinged to the connecting member via a hinge shaft and circumferentially abuts against the end face of the stop. Rotating the hand control utilizes the structural change of the cam, i.e., the change in the distance between the hinge shaft and the stop, to create a pulling distance between the hand control and the connecting member and other components, thereby controlling the clamping member to move away from the irregular sidewall A1. Specifically, due to space limitations, the two hand controls are arranged opposite each other, with opposite rotation directions.
[0104] It is understandable that the clamping component and the slider can be integrated as a single unit or connected separately. The first elastic element 511 and the second elastic element 611 are optionally equipped with springs.
[0105] Specifically, there are two first elastic elements 511 and one second elastic element 611. It is understood that the number of springs can be selected based on the size of the clamping element or the clamping force requirements; one, two, three, four, etc., can be selected.
[0106] Specifically, in some embodiments, such as Figures 2-3 As shown, the positioning fixture for the irregularly shaped shell also includes a support member 41 and an auxiliary positioning member 42; the support member 41 is used to support one end face of the irregularly shaped shell A, and the auxiliary positioning member 42 is used to press the irregularly shaped shell A onto the support member 41 from the other end face of the irregularly shaped shell A.
[0107] Specifically, in some embodiments, the support member 41 is part of the base 41, and the upper end surface of the base 41 serves to support the irregular shell A. Each of the limiting members is installed on the upper end surface of the base 41. When the limiting members support the inner sidewall of the irregular shell A, a region extending outward from the upper end surface of the base 41 around the perimeter of each limiting member, at least the thickness of the irregular shell wall, serves as the supporting part of the irregular shell A.
[0108] During operation, the irregularly shaped shell A is fitted onto the limiting member, and one end face of the irregularly shaped shell A is supported on the support member 41. Then, the auxiliary positioning member 42 presses the irregularly shaped shell A onto the support member 41 from the other end face of the irregularly shaped shell A. At this time, the interior of the irregularly shaped shell A and its upper and lower end faces have been stably positioned. Then, each clamping member is controlled to clamp the outer wall of the irregularly shaped shell A.
[0109] The clamping process of the clamping component is performed with the assistance of the auxiliary positioning component 42, which can counteract the upward warping and vertical movement that may occur during side clamping, thereby affecting the subsequent processing or installation accuracy of the irregular shell.
[0110] It is understood that in some embodiments, the support 41 may also be configured as a separate component connected to the base 41.
[0111] Optionally, the auxiliary positioning component 42 can be set as a counterweight. Optionally, the auxiliary positioning component 42 can be fixedly connected to the first limiting component 1 and the limiting component or support component 41 by bolts or other fasteners.
[0112] In some embodiments, the arcuate wall positions between the irregular sidewall A1 and the third sidewall A4, between the first sidewall A2 and the second sidewall A3, and between the second sidewall A3 and the third sidewall A4 of the irregularly shaped shell A are internally supported by limiting members, and externally do not contact the clamping members. Similarly, by using an internally supported and externally loose clamping method at the corner deformation parts, the requirements for the shape and dimensional accuracy of the contact surface between the limiting member and the arcuate wall are reduced, avoiding deformation of the arcuate wall due to direct compression, which would affect the positioning of the irregularly shaped shell A.
[0113] All the above-mentioned optional technical solutions can be combined in any way to form optional embodiments of the present invention. That is, any number of embodiments can be combined to meet the needs of different application scenarios. All of these are within the protection scope of this application and will not be described in detail here.
[0114] It should be noted that the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. A positioning fixture for an irregularly shaped shell, characterized in that: The irregularly shaped shell (A) is annular and has irregularly shaped sidewalls (A1); the positioning fixture for the irregularly shaped shell includes: The first limiting member (1) and the second limiting member (2) are located side by side inside the irregular shell (A) on the side corresponding to the irregular sidewall (A1); The first clamping member (5) and the second clamping member (6) are located side by side on the outside of the irregular shell (A) on the other side of the irregular sidewall (A1); The first power mechanism (51) is used to drive the first clamping member (5) to move so as to cooperate with the first limiting member (1) to clamp part of the irregular sidewall (A1). The second power mechanism (61) is used to drive the second clamping member (6) to move so as to cooperate with the first limiting member (1) and the second limiting member (2) to clamp part of the irregular sidewall (A1).
2. The positioning fixture for the irregularly shaped shell according to claim 1, characterized in that: The irregular sidewall (A1) has a first planar structure (A11), an irregular structure (A13), and a second planar structure (A12) connected in sequence. The first clamping member (5) cooperates with the first limiting member (1) to clamp the first planar structure (A11) and part of the irregular structure (A13). The second clamping member (6) cooperates with the first limiting member (1) and the second limiting member (2) to clamp the second planar structure (A12) and part of the irregular structure (A13).
3. The positioning fixture for the irregularly shaped shell according to claim 2, characterized in that: The length of the second planar structure (A12) of the irregular sidewall (A1) is less than the length of the first planar structure (A11); the irregular shell (A) also has a first sidewall (A2), which is connected to the second planar structure (A12) of the irregular sidewall (A1); the positioning fixture of the irregular shell further includes: The third limiting member (3) is located inside the irregular shell (A) on the side corresponding to the first sidewall (A2); The third clamping member (7) is located on the other side of the irregular shell (A) corresponding to the first sidewall (A2); The third power mechanism (71) is used to drive the third clamping member (7) to move so as to cooperate with the second limiting member (2) and the third limiting member (3) to clamp the first sidewall (A2).
4. The positioning fixture for the irregularly shaped shell according to claim 3, characterized in that: The third power mechanism (71) includes a third elastic element (711) and a third pulling assembly (712) connected to the third clamping member (7); the third elastic element (711) is used to drive the third clamping member (7) to move closer to the first sidewall (A2) to provide a clamping force on the first sidewall (A2); the third pulling assembly (712) is used to pull the third clamping member (7) away from the first sidewall (A2).
5. The positioning fixture for the irregularly shaped shell according to claim 3 or 4, characterized in that: The irregularly shaped shell (A) further includes a second sidewall (A3) opposite to the irregularly shaped sidewall (A1); the positioning fixture for the irregularly shaped shell further includes: The fourth limiting member (4) is located inside the irregular shell (A) on the side corresponding to the second sidewall (A3); The fourth clamping member (8) is located on the other side of the outer side of the irregular shell (A) corresponding to the second sidewall (A3); The fourth power mechanism (81) is used to drive the fourth clamping member (8) to move so as to cooperate with the third limiting member (3) and the fourth limiting member (4) to clamp the second sidewall (A3).
6. The positioning fixture for the irregularly shaped shell according to claim 5, characterized in that: The fourth limiting member (4) is fixedly installed, and the positions of the first limiting member (1), the second limiting member (2) and the third limiting member (3) are adjustable.
7. The positioning fixture for the irregularly shaped shell according to claim 5, characterized in that: The fourth clamping member (8) cooperates with the fourth limiting member (4) to clamp part of the second sidewall (A3); the positioning fixture for the irregularly shaped shell also includes: The fifth clamping member (9) is located side by side with the fourth clamping member (8) on the other side of the outer side of the irregular shell (A) corresponding to the second sidewall (A3); The fifth power mechanism (91) is used to drive the fifth clamping member (9) to move and cooperate with the fourth limiting member (4) to clamp part of the second sidewall (A3).
8. The positioning fixture for the irregularly shaped shell according to claim 7, characterized in that: The irregularly shaped shell (A) further includes a third sidewall (A4) connected to the second planar structure (A12) of the irregularly shaped sidewall (A1); the positioning fixture of the irregularly shaped shell further includes: The sixth clamping member (10) is located on the side of the irregular shell (A) corresponding to the third sidewall (A4); The sixth power mechanism (101) is used to drive the sixth clamping member (10) to move so as to cooperate with the first limiting member (1) and the fourth limiting member (4) to clamp the third sidewall (A4).
9. The positioning fixture for the irregularly shaped shell according to any one of claims 1-4 and 6-8, characterized in that: The first power mechanism (51) includes a first elastic element (511) and a first pulling assembly (512) connected to the first clamping member (5); the second power mechanism (61) includes a second elastic element (611) and a second pulling assembly (612) connected to the second clamping member (6). The first elastic member (511) is used to drive the first clamping member (5) to move closer to the irregular sidewall (A1) to provide a clamping force on the irregular sidewall (A1); the first pulling assembly (512) is used to drive the first clamping member (5) to move away from the irregular sidewall (A1); The second elastic member (611) is used to drive the second clamping member (6) to move closer to the irregular sidewall (A1) to provide clamping force on the irregular sidewall (A1); the second pulling assembly (612) is used to drive the second clamping member (6) to move away from the irregular sidewall (A1).
10. The positioning fixture for the irregularly shaped shell according to claim 9, characterized in that: It also includes a support member (41) and an auxiliary positioning member (42); the support member (41) is used to support one end face of the irregular shell (A), and the auxiliary positioning member (42) is used to press the irregular shell (A) onto the support member (41) from the other end face of the irregular shell (A).