Annular double-boss drill jig

Abstract

The utility model discloses an annular double-boss drill jig, and particularly relates to a drilling die for bosses at the tail end of a pull ring, the drill jig is used for positioning the pull ring and comprises an outer plate, a middle plate, an inner plate and fastening screws, openings of the pull ring extend outwards to form connectors, connecting holes are formed in the connectors, and the outer plate and the middle plate are connected through the fastening screws. Fastening screws penetrate through the outer positioning holes, the middle positioning holes and the inner positioning holes respectively to fix the pull rings, the drill jig outer plate, the drill jig middle plate and the drill jig inner plate into a whole, and due to the fact that the outer guide holes, the middle guide holes and the inner guide holes are coaxially arranged and are consistent with the connecting holes in position, machining of the connecting holes can be completed by drilling a drill bit into the guide holes through a common bench drilling machine. According to the drill jig, double holes can be machined at the same time after one-time clamping, dismounting work is not needed in the machining process, the coaxiality of the double holes is effectively guaranteed, and the requirements of the double holes, the annular center size and other related sizes are effectively met. Compared with an existing vise and clamping arm fixing mode, the clamp has the advantages of being easy to clamp, high in mechanical strength, not prone to product deformation and the like.

Description

Technical Field

[0001] The utility model relates to a drilling die for an annular double boss, in particular to a drilling die for a boss at the end of a pull ring. Background Art

[0002] The pull ring is a common machined product. It is annular in shape, with the end extending outward to form a boss. There are 2-Φ2 holes intersecting each other in the vertical direction of the boss. This product is often used to open and close the product box. Since the product is a hollow ring, if the 2-Φ2 holes are processed separately, it is difficult to clamp and position when fixed with existing vises and clamp arms. Due to the lack of supporting structure, the product is easy to deform due to low rigidity during processing, and the coaxiality is difficult to ensure, and the size of the hole and the center of the ring cannot be determined. Therefore, how to complete the 2-Φ2 holes in one clamping while ensuring the dimensional accuracy, form and position tolerance and coaxiality requirements is a technical difficulty of this product. Utility Model Content

[0003] In view of this, the utility model proposes an annular double boss drilling jig, which can complete the processing of double holes at the same time after one clamping, and no disassembly work is required during the processing process, effectively ensuring the coaxiality of the double holes, as well as the double holes and the annular center size and other related size requirements.

[0004] The utility model solves the above problems through the following technical means:

[0005] A drilling template with an annular double boss, characterized in that it is used for positioning a pull ring, and comprises a drilling template outer plate, a drilling template middle plate, a drilling template inner plate and a fastening screw, wherein: one end of the ring body of the pull ring is open, and the openings extend outward to form a connecting head, and the connecting heads on both sides are provided with connecting holes; two external positioning holes are provided on both sides of the drilling template outer plate, an external guide hole is provided in the middle of the drilling template outer plate, and an external positioning groove is provided on the inner side of the drilling template outer plate, and the shape of the external positioning groove is consistent with the shape of the connecting head; two A middle positioning hole, a middle guide hole is opened in the middle of the middle plate of the drill template; two inner positioning holes are opened on both sides of the inner plate of the drill template, an inner guide hole is opened in the middle of the inner plate of the drill template, and an inner positioning groove is opened on the inner side of the inner plate of the drill template, and the shape of the inner positioning groove is consistent with the shape of the connecting head; the two fastening screws pass through the outer positioning hole, the middle positioning hole and the inner positioning hole respectively to fix the pull ring, the outer plate of the drill template, the middle plate of the drill template and the inner plate of the drill template into one; the outer guide hole, the middle guide hole and the inner guide hole are coaxially arranged and consistent with the position of the connecting hole.

[0006] Preferably, a positioning arc platform is also provided on the top of the middle plate of the drilling template, and the positioning arc platform is used to contact the inner wall of the pull ring.

[0007] Preferably, a positioning arc groove is provided on the positioning arc platform, the shape of the positioning arc groove is consistent with the shape of the pull ring, and the positioning arc groove is used to support and position the ring body of the pull ring.

[0008] The utility model has the following beneficial effects:

[0009] The drill template is used to position the pull ring, including an outer plate, a middle plate, an inner plate and a fastening screw. The opening of the pull ring extends outward to form a connector. The connector is provided with a connecting hole. The fastening screw passes through the outer positioning hole, the middle positioning hole and the inner positioning hole respectively to fix the pull ring, the outer plate of the drill template, the middle plate of the drill template and the inner plate of the drill template into one body. Since the outer guide hole, the middle guide hole and the inner guide hole are coaxially arranged and consistent with the position of the connecting hole, the processing of the connecting hole can be completed by drilling the drill bit into the guide hole using an ordinary bench drilling machine. The drill template can complete the processing of two holes at the same time after one clamping. No disassembly work is required during the processing process, which effectively ensures the coaxiality of the two holes, the center size of the two holes and the annular ring and other related size requirements. In addition, a positioning arc platform and / or a positioning arc groove can be set on the middle plate of the drill template. On the one hand, it can reliably support and position the ring body to improve the rigidity of the product. On the other hand, it can judge whether the connector has fully entered the positioning groove by the contact between the arc platform or the arc groove and the inner wall of the ring body to ensure the processing accuracy. Compared with the existing vise and clamp arm fixing methods, the device has the characteristics of simple clamping, high mechanical strength, and the product is not easy to deform. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0011] Figure 1 It is a schematic diagram of the overall front structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the overall back structure of the utility model;

[0013] Figure 3 It is a schematic diagram of the disassembly and assembly structure of the utility model;

[0014] Figure 4 This is a schematic diagram of the positioning arc platform structure of the utility model;

[0015] Figure 5 This is a schematic diagram of the positioning arc groove structure of the utility model;

[0016] Figure 6 It is a schematic diagram of the application of the positioning arc groove of the utility model.

[0017] In the figure, 1-pull ring, 101-ring body, 102-connecting head, 103-connecting hole, 2-drill template outer plate, 201-outer positioning hole, 202-outer guide hole, 203-outer positioning groove, 3-drill template middle plate, 301-middle positioning hole, 302-middle guide hole, 303-positioning arc platform, 304-positioning arc groove, 4-drill template inner plate, 401-inner positioning hole, 402-inner guide hole, 403-inner positioning groove, 5-fastening screws. DETAILED DESCRIPTION

[0018] In the description of the present utility model, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0019] The present invention will be described in detail below with reference to the accompanying drawings.

[0020] like Figures 1 to 6 As shown, the annular double-boss drilling template is used to position the pull ring 1. One end of the ring body 101 of the pull ring 1 is open, and the openings extend outward to form a connecting head 102. The connecting heads 102 on both sides are provided with connecting holes 103; two external positioning holes 201 are provided on both sides of the drilling template outer plate 2. Since the product is a hollow ring shape, in order to ensure the coaxiality and processing accuracy of the two holes, it is necessary to clamp them once for processing. In actual work, the axis of the connecting hole is used as a reference. It can be hidden by rotating in the horizontal direction, and the box can be opened and closed in the vertical direction. Therefore, the coaxiality of the 2-Φ2 hole should be less than or equal to 0.05mm.

[0021] In order to meet the above processing requirements, the following mold is designed, which specifically includes a drilling template outer plate 2, a drilling template middle plate 3, a drilling template inner plate 4 and fastening screws 5.

[0022] In the figure, an outer guide hole 202 is opened in the middle of the outer plate 2 of the drill template, and an outer positioning groove 203 is opened on the inner side of the outer plate 2 of the drill template, and the shape of the outer positioning groove 203 is consistent with the shape of the connecting head 102; two middle positioning holes 301 are opened on both sides of the middle plate 3 of the drill template, and a middle guide hole 302 is opened in the middle of the middle plate 3 of the drill template; two inner positioning holes 401 are opened on both sides of the inner plate 4 of the drill template, an inner guide hole 402 is opened in the middle of the inner plate 4 of the drill template, and an inner positioning groove 403 is opened on the inner side of the inner plate 4 of the drill template, and the shape of the inner positioning groove 403 is consistent with the shape of the connecting head 102; two fastening screws 5 pass through the outer positioning hole 201, the middle positioning hole 301 and the inner positioning hole 401 respectively, and then fix the pull ring 1, the outer plate 2 of the drill template, the middle plate 3 of the drill template and the inner plate 4 of the drill template into one; the outer guide hole 202, the middle guide hole 302 and the inner guide hole 402 are coaxially arranged and consistent with the position of the connecting hole 103.

[0023] It should be noted that the drill jig is used to position the pull ring, and includes an outer plate, a middle plate, an inner plate and a fastening screw. The openings of the pull ring extend outward to form a connecting head, and the connecting head is provided with connecting holes. The fastening screws pass through the outer positioning hole, the middle positioning hole and the inner positioning hole respectively to fix the pull ring, the drill jig outer plate, the drill jig middle plate and the drill jig inner plate into one. Since the outer guide hole, the middle guide hole and the inner guide hole are coaxially arranged and consistent with the position of the connecting hole, the processing of the connecting hole can be completed by drilling the drill bit into the guide hole using an ordinary bench drilling machine. The drill jig can complete the processing of the double holes at the same time after one clamping, and no disassembly work is required during the processing process, which effectively ensures the coaxiality of the double holes, as well as the double holes and the center size of the ring and other related size requirements.

[0024] In the figure, a positioning arc platform 303 can be further provided on the top of the drilling template middle plate 3, and the positioning arc platform 303 is used to contact the inner wall of the pull ring 1. A positioning arc groove 304 can also be provided on the positioning arc platform 303, and the shape of the positioning arc groove 304 is consistent with the shape of the pull ring 1, and the positioning arc groove 304 is used to support and position the ring body 101 of the pull ring 1.

[0025] It should be noted that a positioning arc platform and / or positioning arc groove can also be set on the middle plate of the drilling template. On the one hand, it can reliably support and position the ring body to improve the rigidity of the product. On the other hand, it can judge whether the connector is fully inserted into the positioning groove by the contact between the arc platform or the arc groove and the inner wall of the ring body to ensure the processing accuracy. For example, first, the fastening screw 5 is passed through the outer positioning hole 201, the middle positioning hole 301 and the inner positioning hole 401 respectively. At this time, there is a gap between the drilling template. After the connector of the pull ring is inserted and positioned, the fastening screw is tightened. During the tightening process, the fitting relationship between the inner wall of the ring body and the positioning arc groove is checked. When the connector of the pull ring is not completely placed in the positioning groove, the inner wall of the center ring body cannot fit tightly with the positioning arc groove. At this time, it is necessary to further adjust to ensure that the inner wall of the ring body is closely fitted with the positioning arc groove, and then start tightening until the pull ring 1, the outer plate 2 of the drilling template, the middle plate 3 of the drilling template and the inner plate 4 of the drilling template are fixed into one. Compared with the existing vise and clamp arm fixing method, the device has the characteristics of simple clamping, high mechanical strength, and the product is not easy to deform.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A ring-shaped double boss drilling jig, characterized in that: Used for positioning the pull ring (1), comprising a jig outer plate (2), a jig middle plate (3), a jig inner plate (4) and a fastening screw (5), wherein: The ring body (101) of the pull ring (1) is open at one end, and the opening extends outward to form a connecting head (102), and the connecting heads (102) on both sides are provided with connecting holes (103); Two external positioning holes (201) are formed on both sides of the drilling template outer plate (2), an external guide hole (202) is formed in the middle of the drilling template outer plate (2), and an external positioning groove (203) is formed on the inner side of the drilling template outer plate (2), and the shape of the external positioning groove (203) is consistent with the shape of the connector (102); Two central positioning holes (301) are provided on both sides of the drilling template middle plate (3), and a central guide hole (302) is provided in the middle of the drilling template middle plate (3); Two inner positioning holes (401) are provided on both sides of the drilling template inner plate (4), an inner guide hole (402) is provided in the middle of the drilling template inner plate (4), and an inner positioning groove (403) is provided on the inner side of the drilling template inner plate (4), and the shape of the inner positioning groove (403) is consistent with the shape of the connector (102); The two fastening screws (5) are respectively passed through the outer positioning hole (201), the middle positioning hole (301) and the inner positioning hole (401) to fix the pull ring (1), the outer plate (2), the middle plate (3) and the inner plate (4) of the drilling template into one body; The outer guide hole (202), the middle guide hole (302) and the inner guide hole (402) are coaxially arranged and are consistent in position with the connection hole (103).

2. The annular double boss drilling jig according to claim 1, characterized in that: A positioning arc platform (303) is also provided on the top of the drilling template middle plate (3), and the positioning arc platform (303) is used to contact the inner wall of the pull ring (1).

3. The annular double boss drilling jig according to claim 2, characterized in that: The positioning arc platform (303) is provided with a positioning arc groove (304), the shape of the positioning arc groove (304) is consistent with the shape of the pull ring (1), and the positioning arc groove (304) is used to support and position the ring body (101) of the pull ring (1).

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