Identifier spraying protection tool for rolling tooth surface of roller

Abstract

The utility model discloses a roller hobbing surface spraying mark protection tool, the tool is mainly formed by assembling an upper die and a lower die, the upper die is provided with an upper protection shell, an assembly positioning boss and a mark groove sealing surface, and the lower die is provided with a lower protection shell, an assembly positioning groove, an angular positioning pin and a mark shape groove. The device is used for spraying the mark on the hobbing surface of the roller so as to meet the requirement of quickly processing the mark in the specified shape on the curved surface. According to the working principle of the tool, the face, not needing paint spraying, of a part is protected, the through groove in the shape where the mark needs to be sprayed is designed in the surface of the tool, then paint spraying is conducted on the grooving position of the tool, and then the mark in the needed shape can be machined.

Description

Technical Field

[0001] The utility model relates to the design of a protective tooling for spraying special-shaped curved surfaces, in particular to a protective tooling for spraying markings on a roller gear surface. Background Art

[0002] With the rapid development of aviation and aerospace technology, the diversity of product functions has increased, and the functional and error-proofing markings of related components have also increased accordingly, and the quality requirements of marking work have also increased simultaneously. In order to ensure the three-proofness of the product, the marking is often carried out by painting. Due to the diversified structure and quantity characteristics of aviation and aerospace products, considering the cost issue, many markings are not suitable for automation. Special spray protection tooling is often used to spray the markings, so as to effectively ensure the quality and consistency of the markings after processing. When spraying markings on regular planes or large curved surfaces, thin metal plates of about 0.2mm are mostly used, and the shape of the markings is cut out by laser cutting for use. However, when encountering irregular small curved surfaces, such as the continuous irregular curved surface on the outer surface of the roller gear, this method cannot ensure that the metal sheet fits well with the roller gear surface, and cannot ensure the quality of the painting. Therefore, it is necessary to design special protective tooling according to the contour shape of the parts. Summary of the invention

[0003] In view of the problems existing in the background technology, the utility model aims to provide a protective tooling for spraying markings on the toothed surface of a roller. The protection of non-marking surfaces can be completed by assembling the tooling once, ensuring high quality and smooth completion of the marking spraying work.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] The protective tooling for spraying marking on the roller gear surface includes an upper die and a lower die, wherein:

[0006] A circle of continuous and closed upper protective shell is arranged on one end surface of the upper die and along the circumference of the upper die, and the end surface of the upper protective shell perpendicular to the axis direction of the upper die forms a first assembly surface, and the first assembly surface includes three areas, one of which is an identification groove sealing surface, another is a positioning area, and another is an upper protective shell extension area, the identification groove sealing surface is a stepped step surface, and an assembly positioning boss protruding along the axis of the upper die is arranged on the positioning area, the upper protective shell extension area is located outside the identification groove sealing surface, and the upper protective shell extension area is provided with an upper protective shell extension portion;

[0007] A circle of continuous and closed lower protective shell is arranged on one end face of the lower die and along the circumference of the lower die, the end face of the lower protective shell perpendicular to the axial direction of the lower die forms a second assembly surface matching the first assembly surface, the second assembly surface is a stepped step surface, the outer circumferential contour diameter of the second assembly surface is smaller than the inner circumferential contour diameter of the extended portion of the protective shell, the inner circumferential contour diameter of the second assembly surface is larger than the inner circumferential contour diameter of the first assembly surface, the second assembly surface is provided with an assembly positioning groove and an identification shape groove recessed along the axis of the lower die, the inner side wall surface of the lower protective shell parallel to the axial direction of the lower die is consistent with the shape of the roller tooth surface, and an angular positioning pin is also arranged on the inner side of the lower protective shell and on the end face of the lower die.

[0008] As an option, the step on the sealing surface of the identification groove is a transition fillet.

[0009] As an option, the assembly clearance between the inner wall surface of the upper protective shell and the roller gear surface is 0.1-0.2 mm;

[0010] The assembly clearance between the sealing surface of the marking groove and the roller gear is ≤0.03mm.

[0011] As an option, the thickness of the upper protective shell and the lower protective shell is 1-2 mm.

[0012] As an option, the end surface of the protective shell extension is stepped and parallel to the sealing surface of the marking groove.

[0013] As an option, an assembly gap between the inner wall of the protective shell extension and the lower protective shell is 0.1-0.3 mm.

[0014] Compared with the prior art, the utility model has the following characteristics:

[0015] (1) The protective tooling is formed by assembling the upper die and the lower die, which has high coaxiality with the roller gear, ensuring good protection consistency in the non-spraying area on the roller gear surface, improving the efficiency and quality of spray protection, and is particularly suitable for continuous and irregular small curved surface spray protection such as the roller gear surface;

[0016] (2) The protective shell composed of the upper protective shell and the lower protective shell is quickly positioned by assembling the positioning boss and the assembly positioning groove;

[0017] (3) The sealing surface of the logo groove and the logo shape groove form a closed spraying area, in which the logo spraying can be carried out quickly, and the design of the step surface can adapt to the height change of the logo position;

[0018] (4) The extended part of the protective shell can prevent the paint from entering the non-spraying area through the gap. On the other hand, it realizes the relative fixation of the upper mold and the lower mold. The angular positioning pins prevent the roller gear from shifting during the spraying process, thus avoiding quality problems such as misalignment of the mark caused by accidental collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the upper die and lower die after assembly in the protective tooling;

[0020] Figure 2 It is a schematic diagram of the plane structure of the lower die;

[0021] Figure 3 It is a schematic diagram of the planar structure of the upper die;

[0022] Figure 4 This is a schematic diagram of the roller gear hobbing state installed in the lower die;

[0023] Figure 5 It is a three-dimensional schematic diagram of the upper mold and the lower mold after assembly;

[0024] Figure 6 It is a three-dimensional picture of the lower mold;

[0025] Figure 7 It is a three-dimensional picture of the upper mold;

[0026] In the figure: 1-upper die; 2-lower die; 3-assembly positioning groove; 4-angular positioning pin; 5-lower protective shell; 6-identification shape groove; 7-identification groove sealing surface; 8-transition fillet; 9-upper protective shell; 10-assembly positioning boss. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to the common technical knowledge and customary means in the field are included in the scope of the present invention.

[0028] like Figure 1 to Figure 7 As shown, the roller gear surface spray marking protective tooling is mainly composed of an upper die 1 and a lower die 2. The functions of the components of the upper die 1 and the lower die 2 are as follows:

[0029] The lower die 2 is made of H62 brass, and is designed with a lower protective shell 5, an assembly positioning groove 3, an angular positioning pin 4, a marking shape groove 6 and other structures;

[0030] The upper die 1 is made of H62 brass and is designed with structures such as an upper protective shell 9, an assembly positioning boss 10, and a marking groove sealing surface 7;

[0031] The number of lower mold 1 is 1, and the material is H62 brass. Plastic is not recommended because the paint layer on the tooling surface needs to be cleaned frequently with banana water after painting. Banana water is corrosive to plastic, resulting in a short tooling life:

[0032] The lower protective shell 5 is used to protect the non-spraying position of the regulating roller. It is designed according to the shape of the roller gear. The shape should be consistent with the roller gear shape, and ensure that the gap between the lower protective shell 5 and the roller gear surface (outer wall) is controlled at 0.1-0.2mm after assembly. If the gap is too small, it will be difficult to assemble, and the sprayed logo will be easily scraped off after painting; if the gap is too large, the sprayed logo will be deformed and enlarged. In addition, the wall thickness of the lower protective shell 5 should be kept at 1mm-2mm. Too thin will increase the difficulty and cost of processing and reduce the service life. Too thick will affect the quality of painting and cause irregular spraying shape.

[0033] The angular positioning pin 4 is mainly used to adjust the angular positioning of the roller and the lower die 2 during assembly, so as to facilitate workers to quickly confirm the assembly position and angular direction, and is designed to prevent wrong assembly.

[0034] The assembly positioning groove 3 is mainly used to facilitate identification of the assembly position when assembling with the upper mold 1, so as to achieve the purpose of fast and correct assembly of the upper mold 1, and is designed as a structure to prevent wrong assembly.

[0035] The logo shape groove 6 is designed according to the desired spray logo shape. To facilitate the processing of the logo shape, the groove needs to be designed to be open and then assembled with the upper mold 1 to form a closed logo shape groove 6.

[0036] The number of upper die 2 is 1, and the material is H62 brass;

[0037] The upper protective shell 9 is used to protect the non-spraying position of the roller. It is designed according to the outer shape of the lower mold to ensure that the gap between the extended part of the upper protective shell 5 and the side wall of the lower mold 2 after assembly is controlled within 0.1-0.3mm. Figure 1 and Figure 5 The extended portion of the middle protective shell covers the assembly surfaces of the upper mold 1 and the lower mold 2 from top to bottom.

[0038] The assembly positioning boss 10 is mainly used to facilitate identification of the assembly position when assembling with the lower mold 2, so as to achieve the purpose of fast and correct assembly of the upper mold 1, and is designed as a structure to prevent wrong assembly.

[0039] The identification groove sealing surface 7 closes the identification shape groove 6 of the lower mold 2 when assembled with the lower mold 2, such as Figure 3As shown, because the marking heights at surfaces C, D, E, F, G, H, and I are inconsistent, surfaces C, D, E, F, G, H, and I all need to be closed with the stepped marking groove sealing surface 7. To ensure the quality of painting, the gap between each closed surface should be controlled at ≤0.03mm. If the gap is too large, there will be a paint line on the surface after painting, affecting the quality of painting.

[0040] The transfer radius 8 is mainly to avoid a dead angle in the assembly surface processing, which makes the stepped assembly surface of the upper mold 1 unable to be processed.

[0041] The steps for spraying the side surface marking of the roller gear are as follows:

[0042] (1) Assemble the roller onto the lower die 2, align the through hole on the roller with the angular positioning pin 4 on the lower die 1, and then install the entire roller into the lower protective shell 5 of the lower die 2;

[0043] (2) Assemble the upper mold 1 onto the lower mold 2, align the assembly positioning boss 10 of the upper mold 1 with the assembly positioning groove 3 of the lower mold 2, and then assemble the upper mold 1 into the lower mold 2, ensuring that the upper protective shell extension just covers the assembly surface of the upper mold 1 and the lower mold 2;

[0044] (3) Use a spray gun to spray paint the 6 marking shape grooves on the protective tooling;

[0045] (4) After spraying, remove the upper die 1 and take the roller out of the lower die 2 of the protective tooling;

[0046] (5) After processing every 3 to 5 pieces, the residual paint layer on the protective tooling should be cleaned to ensure the quality of the subsequent parts marking spray painting.

[0047] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. The protective tooling for spraying markings on the roller gear surface is characterized by: It comprises an upper die (1) and a lower die (2), wherein: A continuous, closed upper protective shell (9) is arranged on one end surface of the upper mold (1) and along the circumference of the upper mold (1); the end surface of the upper protective shell (9) perpendicular to the axial direction of the upper mold (1) forms a first assembly surface; the first assembly surface includes three areas, one of which is an identification groove sealing surface (7), another is a positioning area, and another is an upper protective shell extension area; the identification groove sealing surface (7) is a stepped step surface; the positioning area is provided with an assembly positioning boss (10) protruding along the axis of the upper mold (1); the upper protective shell extension area is located outside the identification groove sealing surface (7); and the upper protective shell extension area is provided with an upper protective shell extension portion; A continuous and closed lower protective shell (5) is arranged on one end surface of the lower die (2) and along the circumference of the lower die (2); the end surface of the lower protective shell (5) perpendicular to the axial direction of the lower die (2) forms a second assembly surface that matches the first assembly surface; the second assembly surface is a stepped step surface; the outer circumferential contour diameter of the second assembly surface is smaller than the inner circumferential contour diameter of the extended portion of the protective shell; the inner circumferential contour diameter of the second assembly surface is larger than the inner circumferential contour diameter of the first assembly surface; the second assembly surface is provided with an assembly positioning groove (3) and an identification shape groove (6) recessed along the axis of the lower die (2); the inner side wall surface of the lower protective shell (5) parallel to the axial direction of the lower die (2) is consistent with the shape of the roller tooth surface; an angular positioning pin (4) is also arranged on the inner side of the lower protective shell (5) and on the end surface of the lower die (2).

2. The protective tooling for spraying marking on the roller gear surface according to claim 1 is characterized by: The step on the marking groove sealing surface (7) is a transition fillet (8).

3. The protective tooling for spraying marking on the roller gear surface according to claim 1 is characterized by: The assembly clearance between the inner wall surface of the upper protective shell (9) and the roller gear surface is 0.1-0.2 mm; The assembly clearance between the marking groove sealing surface (7) and the roller gear is ≤0.03 mm.

4. The protective tooling for spraying marking on the roller gear surface according to claim 1 is characterized in that: The thickness of the upper protective shell (9) and the lower protective shell (5) is 1 to 2 mm.

5. The protective tooling for spraying marking on the roller gear surface according to claim 1 is characterized in that: The end surface of the protective shell extension is step-shaped and parallel to the marking groove sealing surface (7).

6. The protective tooling for spraying marking on the roller gear surface according to claim 1 is characterized in that: The assembly clearance between the inner wall of the protective shell extension and the lower protective shell (5) is 0.1-0.3 mm.

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