Composite joint tooling and methods of use thereof

Abstract

The application discloses a composite material joint tool, which comprises a core mold and a supporting platform, and the core mold is fixedly arranged on the supporting platform; the core mold comprises a left core mold, a middle core mold and a right core mold, and the left core mold, the middle core mold and the right core mold are spliced together to form the core mold; the width of one end of the middle core mold contacting the supporting platform is greater than the width of the other end; the width of one end of the left core mold and the right core mold contacting the supporting platform is respectively smaller than the width of the other end; the one end of the middle core mold contacting the supporting platform is provided with a first bolt hole; the one end of the left core mold and the right core mold contacting the supporting platform is respectively provided with a light hole; the supporting platform is provided with a second bolt hole corresponding to the first bolt hole and the light hole, and is connected through a fixing bolt and a jacking bolt respectively. The middle core mold is fixed on the supporting platform, the jacking bolt is jacked into the light hole, and the left core mold and the right core mold are jacked up, so that the composite material joint workpiece formed by solidification is not damaged during demolding.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tooling die, and particularly relates to a composite joint tool and a use method thereof. BACKGROUND

[0002] Material lightening is one of the main technical approaches for industrial robot lightening, and it is of far-reaching significance for the development and application of industrial robots to reduce the self weight of robots as much as possible under the premise of guaranteeing the perfection, stability and safety of functions. Carbon fiber composite material is high in strength, small in creep, light in weight and large in load capacity, and is helpful to realize the application effects of precision, high efficiency, stability and low energy consumption of industrial robots.

[0003] However, the robot joint has various structures such as flanging, closing and opening due to its special function, and is complex in shape, so it is very difficult to manufacture the demolding of the composite material. The conventional demolding method is to pry by using a tool, which can easily cause damage to the workpiece. Since the quality of the robot joint is required to be high, the small damage needs to be re-produced, which causes great waste of resources. In addition, the machining precision of the robot joint is very high, and the production and processing of the robot joint exist such technical problems which need to be solved. SUMMARY

[0004] The purpose of the application is to provide a composite joint tool and a use method thereof, which is convenient for the molding of the robot composite joint workpiece, facilitates demolding, and does not damage the molded composite joint workpiece.

[0005] In order to achieve the above purpose, the technical scheme of the application is as follows: a composite joint tool, comprising a core die and a support platform, the core die is fixedly placed on the support platform; the core die comprises a left core die, a middle core die and a right core die, the left core die, the middle core die and the right core die are spliced together to form the core die; the width of one end of the middle core die contacting the support platform is greater than the width of the other end, and the width of one end of the left core die and the right core die contacting the support platform is respectively smaller than the width of the other end; the one end of the middle core die contacting the support platform is provided with a first bolt hole, and the one end of the left core die and the right core die contacting the support platform is respectively provided with a light hole, the support platform is provided with a second bolt hole corresponding to the first bolt hole and the light hole, and is connected by a fixing bolt and a jacking bolt respectively.

[0006] The core mold is composed of the left core mold, the middle core mold and the right core mold spliced together, and a composite joint layer is laid on the outer surface of the core mold; the middle core mold is narrow at the top and wide at the bottom, and the left core mold and the right core mold are wide at the top and narrow at the bottom, which makes the left core mold and the right core mold better fit on the middle core mold; the first bolt hole is arranged at the bottom of the middle core mold, the light hole is arranged at the bottom of the left core mold and the right core mold, and the second bolt hole is arranged on the support platform correspondingly; after the composite joint layer is cured and formed, the fixing bolt is screwed into the second bolt hole and the first bolt hole to fix the middle core mold on the support platform, and the jacking bolt is jacked into the light hole to jack up the left core mold and the right core mold; since the surfaces of the left core mold, the middle core mold and the right core mold that contact with each other are all inclined, the jacked left core mold and the right core mold gradually separate from the middle core mold, and the left core mold and the right core mold are pushed to the middle core mold by external force, so that the core mold is separated from the composite joint, and the mold is separated; compared with the traditional tool prying, the tooling is convenient for demolding and will not damage the cured composite joint product.

[0007] Further, the length of the jacking bolt is greater than the sum of the height of the light hole and the second bolt hole, so that the jacking bolt can be jacked into the light hole and jack up the left core mold and the right core mold, separate the left core mold, the right core mold and the middle core mold, and achieve the purpose of demolding.

[0008] Further, the side surface of the left core mold, the middle core mold and the right core mold has a third bolt hole, and the core mold is composed of the left core mold, the middle core mold and the right core mold spliced together through the third bolt hole and the bolt, which further fixes the three to tightly fit together and prevents loosening during laying the composite joint layer to affect the effect of the product.

[0009] Further, the middle core mold has a positioning groove, the core mold is provided with a milling cutter groove, and the tooling further comprises a pad corresponding to the positioning groove and the milling cutter groove. The pad seals the positioning groove and the milling cutter groove, which facilitates laying the composite joint layer on the surface of the core mold, and also facilitates milling holes on the product at the corresponding milling cutter groove position after the composite joint product is completed.

[0010] Further, the diameter of the milling cutter groove is greater than the diameter of the corresponding hole on the product, so that the milling cutter will not touch the core mold during milling, and the milling cutter is prevented from being damaged.

[0011] Further, the tool further comprises a clamping cover which is clamped on the outer surface of the core mold, the clamping cover has a connecting rod thereon, and the connecting rod is fixed on the core mold through a mounting bolt. When milling the hole on the surface of the composite joint part in the later stage, the clamping cover is used to further fix the part closely on the core mold, so as to prevent the problem of not reaching the position of milling.

[0012] Further, the clamping cover is provided with a hole groove corresponding to the milling cutter groove and the third bolt hole on the core mold, and the hole groove is used for milling the hole on the surface of the composite joint part.

[0013] Further, the support platform is provided with a support frame at the bottom, the support frame is fixed on a base, and the base is provided with a positioning pin hole and a fourth bolt hole which are installed on the milling platform. The support frame can support the support platform, the bolt can be inserted into the second bolt hole from the bottom of the support platform, and the base can be fixed on the milling platform through the positioning pin hole and the fourth bolt hole, so as to perform the milling work.

[0014] A use method of a composite joint tool, comprising the following steps:

[0015] S1 core mold assembly:

[0016] 1-1, assemble the left core mold, the middle core mold and the right core mold, and connect and fix them through the connecting bolt and the third bolt hole;

[0017] 1-2, place the cushion block into the positioning groove and the milling cutter groove, and complete the assembly of the core mold.

[0018] S2 composite joint part manufacturing:

[0019] Pile up the composite joint layers on the surface of the core mold, and then fix and form to obtain the composite joint part.

[0020] S3 demolding:

[0021] 3-1, place the core mold on the support platform, and fix it on the support platform through the second bolt hole, the first bolt hole and the fixing bolt;

[0022] 3-2, remove the connecting bolt in the third bolt hole;

[0023] 3-3, install the jacking bolt, the bolt is jacked into the light hole, the left core mold and the right core mold are respectively jacked out and separated from the middle core mold; when the bolt is jacked into the light hole, due to the large number of light holes, the bolt needs to be considered balanced when jacking into the light hole, the diagonal bolt is uniformly screwed to prevent the left core mold or the right core mold from being jacked too high and tilting towards the middle core mold, causing the core mold to be inclined and not convenient for demolding;

[0024] 3-4, the left core mold and the right core mold jacked away from the support platform are extruded to the middle core mold by external force, the core mold and the composite joint part are separated, and demolding is completed.

[0025] S4: milling processing:

[0026] 4-1, remove the gasket in the milling cutter groove and the positioning groove, fix the middle core mold on the support platform again, and complete the positioning of the milling cutter on the milling cutter platform by using the positioning groove, and set the related milling system path;

[0027] 4-2, place the composite joint part on the left core mold and the right core mold, and install the left core mold and the right core mold to the two sides of the middle core mold again by external force and form the shape of the complete core mold, so that the installation method is more convenient for installing the composite joint part on the core mold;

[0028] 4-3, install the clamping cover on the surface of the composite joint part, further fix the composite joint part closely on the core mold, and prevent the composite joints from loosening during milling;

[0029] 4-4, the core mold is fixed on the support platform and fixed on the milling platform through the support frame and the base;

[0030] 4-5, the composite joint part is milled to have a plurality of holes on the surface.

[0031] Compared with the prior art, the application has the advantages that: (1) the core mold is divided into three parts, and the left core mold and the right core mold are wide at the top and narrow at the bottom, and the middle core mold is narrow at the top and wide at the bottom, and the fitting surfaces between them are arranged in an inclined manner, so that the fitting effect is good; (2) the light hole is arranged at the bottom of the left core mold and the right core mold, the first threaded hole is arranged at the bottom of the middle core mold, and the second threaded hole corresponding to the light hole and the first threaded hole is arranged on the support platform, the middle core mold is fixed on the support platform by rotating the fixing bolt into the first threaded hole and the corresponding second threaded hole, and the left core mold and the right core mold are lifted by rotating the top-up bolt out of the light hole through the corresponding second threaded hole, so that the purpose of separating the core mold is achieved, and the demolding is completed, the original problem of damaging the composite joint part by prying with tools is solved; (3) the positioning groove and the milling cutter groove are arranged on the core mold, so that the composite joint part can be milled and cut, and the tooling is saved. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to make the content of the application more easily understood, the application will be further described in detail below according to specific embodiments and in conjunction with the drawings, in which

[0033] Figure 1 It is a schematic diagram of the overall structure of the tooling in the application;

[0034] Figure 2 It is a schematic diagram of the core mold placed on the support platform in the application;

[0035] Figure 3 It is another angle schematic diagram of the core mold placed on the support platform in the application;

[0036] Figure 4 It is a schematic diagram of the core mold structure in the application;

[0037] Figure 5 It is another angle schematic diagram of the core mold structure in the application;

[0038] Figure 6 It is a schematic diagram of the composite joint part in the application.

[0039] Explanation of reference signs: 1 support platform; 2 left core mold; 3 middle core mold; 4 right core mold; 5 first bolt hole; 6 light hole; 7 second bolt hole; 8 third bolt hole; 9 connecting bolt; 10 positioning groove; 11 milling cutter groove; 12 hole; 13 clamping cover; 13-1 connecting rod; 14 hole groove; 15 support frame; 16 base; 17 positioning pin hole; 18 fourth bolt hole. DETAILED DESCRIPTION

[0040] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0041] Example:

[0042] like Figures 1-6 As shown, this embodiment provides a composite joint tooling, including a core mold and a support platform 1. The core mold is fixedly placed on the support platform 1. The core mold includes a left core mold 2, a middle core mold 3, and a right core mold 4, which are assembled together to form the core mold. The width of the middle core mold 3 at one end that contacts the support platform 1 is greater than the width of the other end. The widths of the left core mold 2 and the right core mold 4 at one end that contacts the support platform 1 are respectively smaller than the widths of their respective other ends. The middle core mold 3 at one end that contacts the support platform 1 has a first bolt hole 5. The left core mold 2 and the right core mold 4 at one end that contacts the support platform 1 each have a light hole 6. The support platform 1 is provided with second bolt holes 7 corresponding to the first bolt hole 5 and the light hole 6, respectively, and they are connected by fixing bolts and lifting bolts. The core mold is composed of the left core mold 2, the middle core mold 3, and the right core mold 4 assembled together. A composite joint layup is applied to the outer surface of the core mold. The middle core mold 3 is narrower at the top and wider at the bottom, while the left core mold 2 and right core mold 4, which are attached to the left and right sides of the middle core mold 3, are wider at the top and narrower at the bottom. This arrangement allows the left core mold 2 and right core mold 4 to fit better onto the middle core mold 3. The first bolt hole 5 is provided at the bottom of the middle core mold 3, and the light hole 6 is provided at the bottom of the left core mold 2 and right core mold 4. The second bolt hole 7 is provided on the support platform 1 accordingly. After the composite joint layup is cured and formed, the second bolt hole 7 is formed in the second bolt hole 7. Screw in the fixing bolts into the first bolt hole 5 to fix the intermediate core mold 3 onto the support platform 1. The lifting bolts are inserted into the light hole 6 to lift the left core mold 2 and the right core mold 4. Since the contact surfaces of the left core mold 2, the intermediate core mold 3, and the right core mold 4 are all inclined, the lifted left core mold 2 and right core mold 4 gradually separate from the intermediate core mold 3. With the help of external force, the left core mold 2 and right core mold 4 are pushed towards the intermediate core mold 3. In this way, the core mold is separated from the composite joint and demolded. Compared with traditional tools, this tooling facilitates demolding and will not damage the cured composite joint part.

[0043] The length of the jack bolt is greater than the sum of the height of the light hole 6 and the second bolt hole 7, which ensures that the jack bolt can be jacked into the light hole 6 and jack up the left core mold 2 and the right core mold 4, complete the separation of the left core mold 2, the right core mold 4 and the middle core mold 3, and achieve the purpose of demolding.

[0044] As shown in Figure 1 and Figure 4 The side surface of the left core mold 2, the middle core mold 3 and the right core mold 4 has a third bolt hole 8, and is spliced together by a connecting bolt 9 and the third bolt hole 8 to form the core mold, further fixing the three to closely adhere together, preventing loosening during the laying of the composite joint layer and affecting the effect of the product.

[0045] As shown in Figure 2 and Figure 5 The middle core mold 3 has a positioning groove 10, and the core mold is provided with a milling cutter groove 11, and the tool further includes a pad corresponding to the positioning groove 10 and the milling cutter groove 11. The pad seals the positioning groove 10 and the milling cutter groove 11, which facilitates the laying of the composite joint layer on the surface of the core mold, and also facilitates the milling of holes on the product at the corresponding milling cutter groove 11 position after the completion of the composite joint product. The diameter of the milling cutter groove 11 is greater than the diameter of the corresponding hole 12 on the product, which ensures that the milling cutter will not touch the core mold during milling, thereby preventing damage to the milling cutter.

[0046] As shown in Figure 1 The tool further includes a clamping cover 13, which is clamped on the outer surface of the core mold. The clamping cover 13 has a connecting rod 13-1, which is fixed on the core mold by mounting bolts. When milling holes on the surface of the composite joint product in the later stage, the clamping cover 13 is used to further fix the product closely adhering to the core mold, preventing the problem of incomplete milling. The clamping cover 13 is provided with a hole groove 14 corresponding to the milling cutter groove 11 and the third bolt hole 8 on the core mold, and the hole groove 14 is used for milling holes on the surface of the composite joint product. The bottom of the support platform 1 is provided with a support frame 15, which is fixed on the base 16. The base 16 is provided with a positioning pin hole 17 and a fourth bolt hole 18 for mounting the milling platform. The support frame 15 can support the support platform 1, facilitating the insertion of the bolt into the second bolt hole 7 from the bottom of the support platform 1. The positioning pin hole 17 and the fourth bolt hole 18 are used to fix the base 16 on the milling platform for milling related work.

[0047] A method for using a composite joint tool, comprising the following steps:

[0048] S1 core mold assembly:

[0049] 1-1, the left core mold 2, the intermediate core mold 3 and the right core mold 4 are assembled and fixed by connecting bolts 9 and the third bolt hole 8;

[0050] 1-2, the cushion block is placed into the positioning groove 10 and the milling cutter groove 11, and the assembly of the core mold is completed.

[0051] S2 composite joint part production:

[0052] The composite joint layer is laid on the surface of the core mold, and then fixed and formed to obtain the composite joint part.

[0053] S3 demolding:

[0054] 3-1, the core mold is placed on the support platform 1 and fixed on the support platform 1 through the second bolt hole 7, the first bolt hole 5 and the fixing bolt;

[0055] 3-2, the connecting bolt 9 in the third bolt hole 8 is removed;

[0056] 3-3, the jacking bolt is installed and jacked into the light hole 6 to jack out the left core mold 2 and the right core mold 4 and separate them from the intermediate core mold 3; when the bolt is jacked into the light hole 6, the balance needs to be considered due to the large number of light holes 6, the diagonal bolts are uniformly screwed, and the left core mold 2 or the right core mold 4 is prevented from being jacked out too high and tilting towards the intermediate core mold 3, which causes the core mold to be inclined and not convenient for demolding; 3-4, the left core mold 2 and the right core mold 4 jacked away from the support platform 1 are pressed towards the intermediate core mold 3 by external force, the core mold and the composite joint part are separated, and the demolding is completed.

[0057] S4: milling processing:

[0058] 4-1, the cushion block in the milling cutter groove 11 and the positioning groove 10 is taken out, the intermediate core mold 3 is fixed on the support platform 1 again, the positioning of the milling cutter on the milling cutter platform is completed by using the positioning groove 10, and the related milling system path is set;

[0059] 4-2, the composite joint part is placed on the left core mold 2 and the right core mold 4, and the left core mold 2 and the right core mold 4 are installed on the two sides of the intermediate core mold 3 again by external force to form the shape of the complete core mold, so that the composite joint part is more easily installed on the core mold;

[0060] 4-3, install the clamping cover 13 on the surface of the composite joint workpiece, further fix the composite joint workpiece closely on the core mold, and prevent the composite joints from loosening during milling;

[0061] 4-4, the core mold is fixed on the support platform 1 and fixed on the milling platform through the support frame 15 and the base 16; 4-5, the composite joint workpiece is milled to have a plurality of holes on the surface.

[0062] Working principle: the core mold is composed of the left core mold 2, the middle core mold 3 and the right core mold 4, and the composite joint layer is laid on the outer surface of the core mold; the middle core mold 3 is narrow at the top and wide at the bottom, and the left core mold 2 and the right core mold 4 are wide at the top and narrow at the bottom, which makes the left core mold 2 and the right core mold 4 better fit on the middle core mold 3; the first bolt hole 5 is arranged at the bottom of the middle core mold 3, the light hole 6 is arranged at the bottom of the left core mold 2 and the right core mold 4, and the second bolt hole 7 is arranged on the support platform 1; after the composite joint layer is cured and formed, the fixing bolt is screwed into the second bolt hole 7, the first bolt hole 5 is screwed into the first bolt hole 5, the middle core mold 3 is fixed on the support platform 1, the jacking bolt is jacked into the light hole 6, and the left core mold 2 and the right core mold 4 are jacked up. Since the left core mold 2, the middle core mold 3 and the right core mold 4 are all inclined to each other, the left core mold 2 and the right core mold 4 have a gap in the middle, and the left core mold 2 and the right core mold 4 are pushed towards the middle core mold 3 by external force, so that the core mold is separated from the composite joint and demolded.

[0063] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0064] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A method of using a composite joint tooling, characterized in that, The composite joint tooling includes a core mold and a support platform (1). The core mold is fixedly placed on the support platform (1). The core mold includes a left core mold (2), a middle core mold (3), and a right core mold (4). The left core mold (2), the middle core mold (3), and the right core mold (4) are assembled together to form the core mold. The width of the middle core mold (3) at one end that contacts the support platform (1) is greater than the width of the other end. The width of the left core mold (2) and the right core mold (4) at one end that contacts the support platform (1) is less than the width of their respective other ends. The middle core mold (3) at one end that contacts the support platform (1) has a first bolt hole (5). The left core mold (2) and the right core mold (4) at one end that contacts the support platform (1) have light holes (6). The support platform (1) is provided with second bolt holes (7) corresponding to the first bolt hole (5) and the light holes (6), and they are connected by fixing bolts and lifting bolts, respectively. The left core mold (2), the middle core mold (3) and the right core mold (4) have third bolt holes (8) on their sides, and are assembled together with connecting bolts (9) and the third bolt holes (8) to form the core mold; The intermediate core mold (3) has a positioning groove (10), and the core mold is provided with a milling cutter groove (11). The tooling also includes pads corresponding to the positioning groove (10) and the milling cutter groove (11), respectively. The tooling also includes a clamping cover (13), which is snapped onto the outer surface of the core mold. The clamping cover (13) has a connecting rod (13-1), which is fixed to the core mold by mounting bolts. The support platform (1) is provided with a support frame (15) at the bottom. The support frame (15) is fixed on the base (16). The base (16) is provided with a positioning pin hole (17) and a fourth bolt hole (18) corresponding to the milling platform. The method of using this composite joint tooling includes the following steps: S1 core mold assembly: Assemble the left core mold (2), the middle core mold (3), and the right core mold (4); Fabrication of S2 composite joint components: A composite joint layer is laid on the surface of the core mold and then cured to form a mold. S3 Demolding: 3-1. Place the core mold on the support platform (1) and fix it on the support platform (1) through the second bolt hole (7), the first bolt hole (5) and the fixing bolt; 3-2. Remove the connecting bolt (9) inside the third bolt hole (8); 3-3. Install the lifting bolt, and push the bolt into the light hole (6) to push out the left core mold (2) and the right core mold (4) respectively, separating them from the middle core mold (3); 3-4. The left core mold (2) and the right core mold (4) that are ejected away from the support platform (1) are pressed toward the middle core mold (3) in turn, and the core mold and the composite joint part are separated to complete the demolding. S4: Milling process: 4-1. Remove the pads in the milling cutter groove (11) and the positioning groove (10), fix the intermediate core mold (3) on the support platform (1) again, and use the positioning groove (10) to complete the positioning of the milling cutter on the milling cutter platform; 4-2. Place the composite joint component onto the left core mold (2) and the right core mold (4), and then install the left core mold (2) and the right core mold (4) onto both sides of the middle core mold (3); 4-3. Install the clamping cover (13) on the surface of the composite joint component; 4-4. The core mold is fixed on the support platform (1) and fixed on the milling platform by the support frame (15) and the base (16); 4-5. Milling the surface opening (12) of the composite joint part.

2. The method of using a composite joint tooling according to claim 1, characterized in that, The length of the lifting bolt is greater than the sum of the heights of the light hole (6) and the second bolt hole (7).

3. The method of using a composite joint tooling according to claim 1, characterized in that, The diameter of the milling cutter groove (11) is larger than the diameter of the corresponding opening (12) on the workpiece.

4. The method of using a composite joint tooling according to claim 1, characterized in that, The clamping cover (13) is provided with slots (14) that correspond to the milling cutter slot (11) and the third bolt hole (8) on the core mold, respectively.

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