Method for manually punching mating hole in normal direction based on alignment curved surface of horizontal block

Abstract

The invention relates to a normal manual mating hole punching method based on a horizontal block alignment curved surface, and belongs to the technical field of machining. According to the method for manually punching the mating holes, the covering cap and the cabin body are assembled, and the gap and the step difference between the cabin body and the covering cap are checked after assembly; the covering cap and the cabin body are fixed under a fixing device, and the assembling relation between the covering cap and the cabin body is rechecked after fixing; determining a cabin body mounting hole in the cabin body by using a scribing needle with the same diameter as the aperture of the covering cap, and scribing the center position of the hole; removing the covering cap; the level bubble instrument is placed on the cabin body, and the center of the level bubble instrument coincides with the position of the center hole in the cabin body; adjusting the state of the cabin, observing that bubbles on the horizontal bubble instrument coincide with the central hole, and aligning the normal position of the cabin; fixing the cabin body and taking down the horizontal bubble instrument; a common radial drill is used for machining the hole with the allowance, and then the hole with the allowance is expanded into a threaded hole; and the process is repeated to machine threaded holes in other positions.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and in particular to a method for manually drilling mating holes based on aligning the normal direction of a curved surface with a leveling block. Background Art

[0002] The cabin of a certain product has a gradually changing cylindrical curved surface shape structure with 4 installation windows, and 4 non-metallic covers need to be installed. Each cover has 32 M5 normal installation screws, and each installation hole has a 90° countersink. The installation structure schematic diagram is shown in Figure 1 , due to the low precision of the cover installation holes, if the holes are directly drilled on the metal cabin using digital measurements, the positions of the installation holes cannot be consistent with the positions of the covers. At the same time, if there is a deviation in the normal direction of the installation holes on the cabin, the installation screws will press and damage the covers, not meeting the usage requirements.

[0003] Therefore, there is an urgent need for a technology for manually drilling mating holes on a curved surface based on a leveling bubble to solve the problem of manually drilling mating holes in the normal direction of the cabin curved surface. Summary of the Invention

[0004] In view of the above analysis, the present invention aims to provide a method for manually drilling mating holes based on aligning the normal direction of a curved surface with a leveling block to solve the problem of manually drilling mating holes in the normal direction of the cabin curved surface.

[0005] On the one hand, the present invention provides a method for manually drilling mating holes based on aligning the normal direction of a curved surface with a leveling block, including the following steps:

[0006] S1: Assemble the cover and the cabin, and check the gap and step difference between the cabin and the cover after assembly;

[0007] S2: Fix the cover and the cabin under a fixing device. When fixing, press the sunken metal surfaces of the cover and the cabin for installation, and recheck the assembly relationship between the cover and the cabin after fixing;

[0008] S3: Use a scribing needle with the same diameter as the cover hole diameter to determine the cabin installation holes on the cabin and mark the center positions of the holes;

[0009] S4: Remove the cover; Place the leveling bubble on the cabin, and make the center of the leveling bubble coincide with the center hole position on the cabin;

[0010] S5: Adjust the state of the cabin, and observe that the bubble on the leveling bubble coincides with the center hole to align the normal position of the cabin;

[0011] S6: Fix the cabin and remove the leveling bubble; Use an ordinary radial drill to machine a hole with a margin, and use an installation nail with a conical surface to detect whether the countersink of the cover and the normal direction of the installation hole on the cabin coincide, and then expand the hole with a margin into a threaded hole;

[0012] S7: After the thread detection is qualified, fix the access cover with installation nails. The conical surface of the installation nail is closely attached and does not protrude from the surface of the access cover, and the installation holes are processed qualified.

[0013] S8: Repeat the above process to machine the threaded holes at other positions.

[0014] Further, in step S1, the step difference is less than 0.1 and the gap is less than 0.2.

[0015] Further, in step S2, the fixing device is a bow-shaped clamp.

[0016] Further, in step S2, avoid the punched text during fixing and pay attention to protecting the non-metallic access cover.

[0017] Further, the diameter of the hole with allowance is Φ3mm.

[0018] Further, the fitting accuracy between the access cover and the cabin body is 100%.

[0019] Further, the material of the access cover is non-metallic.

[0020] Compared with the prior art, the present invention can at least achieve one of the following beneficial effects:

[0021] The present invention aims at the problem of manually machining high-precision normal installation holes on an irregular curved surface when a machine tool cannot be used, and proposes a practical solution, which can effectively control the manual punching accuracy and propose a detection guarantee method during the process. Applying this method can ensure that the accuracy meets the technical requirements by 100%. At the same time, this method is a general method for manually punching normal installation holes on a curved surface, with a wide application prospect, and can achieve low-cost and high-precision machining of parts.

[0022] In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can be made obvious from the description, or understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained from the content specifically pointed out in the description and the drawings. Brief Description of the Drawings

[0023] The drawings are only for the purpose of showing specific embodiments, and are not considered as a limitation of the present invention. Throughout the drawings, the same reference signs represent the same components.

[0024] Figure 1 It is a schematic diagram of the assembly of the access cover and the cabin body;

[0025] Figure 2 It is a view of the horizontal bubble level;

[0026] In the figure, 1 is the cabin body; 2 is the hatch cover; 3 are 90° countersunk holes. Specific Embodiment

[0027] The following will specifically describe the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings form a part of this application and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0028] Refer to Figure 1 , the cabin body 1 and the hatch cover 2 cooperate with each other and are fixed through a plurality of 90° countersunk holes 3. However, during the manual drilling process, the drilling accuracy is poor, and when assembling and fixing, it is easy to cause the hatch cover to break or crack.

[0029] Therefore, the present invention provides a method for manually drilling mating holes based on the horizontal block to align the surface normal, including the following steps:

[0030] S1: Assemble the hatch cover and the cabin body, and check the gap and step difference between the cabin body and the hatch cover after assembly;

[0031] S2: Fix the hatch cover and the cabin body under a fixing device. When fixing, press the installation sunken metal surface of the hatch cover and the cabin body. After fixing, recheck the assembly relationship between the hatch cover and the cabin body;

[0032] S3: Use a scribing needle with the same diameter as the aperture of the hatch cover to determine the installation holes on the cabin body and mark the center position of the holes;

[0033] S4: Remove the hatch cover; Place the horizontal bubble level on the cabin body, and the center of the horizontal bubble level coincides with the position of the center hole on the cabin body;

[0034] S5: Adjust the state of the cabin body, and observe that the bubble on the horizontal bubble level coincides with the center hole to align the normal position of the cabin body;

[0035] S6: Fix the cabin body and remove the horizontal bubble level; Use an ordinary radial drill to process holes with allowance, and use installation nails with conical surfaces to detect whether the countersinks of the hatch cover and the installation holes on the cabin body are normal and coincide. Then expand the holes with allowance into threaded holes;

[0036] S7: After the thread inspection is qualified, use installation nails to fix the hatch cover. The conical surface of the installation nail is tightly attached and does not protrude from the surface of the hatch cover, and the installation holes are processed qualified;

[0037] S8: Repeat the above process to process threaded holes at other positions.

[0038] Compared with the prior art, the present invention aims at the problem that machine tool processing cannot be used and high-precision normal mounting holes need to be manually processed on an irregular curved surface, and proposes a practical solution, which can effectively control the manual punching accuracy and propose a detection and guarantee method during the process. Applying this method can ensure that the accuracy meets the technical requirements by 100%. At the same time, this method is a general method for manually punching normal mounting holes on a curved surface, with a wide application prospect, and can achieve low-cost and high-precision processing of parts.

[0039] Specifically, in step S1, the step difference is less than 0.1 and the gap is less than 0.2.

[0040] Specifically, in step S2, the fixing device is a bow clamp.

[0041] Specifically, in step S2, avoid the punching text during fixing and pay attention to protecting the non-metallic cover.

[0042] Specifically, the diameter of the hole with allowance is Φ3mm.

[0043] Specifically, the matching accuracy between the cover and the cabin body is 100%.

[0044] Specifically, the cover is made of non-metal.

[0045] To describe the present invention more clearly, it is further illustrated by the following examples and comparative examples

[0046] Example 1

[0047] A method for manually punching mating holes on a curved surface by aligning the normal direction based on a horizontal block, referring to Figure 1 and Figure 2 , includes the following steps:

[0048] S1: Assemble the cover and the cabin body, and check the gap and step difference between the cabin body and the cover after assembly; the step difference is less than 0.1 and the gap is less than 0.2, where the cover is made of non-metal;

[0049] S2: Fix the cover and the cabin body under the action of the fixing device bow clamp. When fixing, press the sunken metal surface of the cover and the cabin body for installation. After fixing, recheck the assembly relationship between the cover and the cabin body. Avoid the punching text during fixing and pay attention to protecting the non-metal cover;

[0050] S3: Use a scribing needle with the same diameter as the cover hole diameter to determine the cabin body installation hole on the cabin body and mark the hole center position;

[0051] S4: Remove the cover; place the horizontal bubble level on the cabin body, and the center of the horizontal bubble level coincides with the center hole position on the cabin body;

[0052] S5: Adjust the state of the cabin body and observe that the bubble on the level bubble coincides with the central hole, which means aligning the normal position of the cabin body;

[0053] S6: Fix the cabin body and remove the level bubble; Use an ordinary radial drill to process a hole with a diameter of Φ3mm with allowance, and use a mounting nail with a conical surface to detect whether the countersink of the cover and the normal of the mounting hole on the cabin body coincide, and then expand the hole with allowance into a threaded hole;

[0054] S7: After the thread inspection is qualified, use the mounting nail to fix the cover. The conical surface of the mounting nail is closely attached and does not protrude from the surface of the cover, and the mounting hole is processed qualified;

[0055] S8: Repeat the above process to process the threaded holes at other positions.

[0056] Applying the method of the present invention can effectively control the manual drilling accuracy and propose a detection and guarantee method during the process, and at the same time can ensure that the accuracy meets the technical requirements by 100%. In addition, this method is a general method for manually drilling normal mounting holes on a curved surface, with a wide application prospect, and can achieve low-cost and high-precision processing of parts.

[0057] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A method for manually drilling mating holes based on the alignment of the normal direction of the curved surface by horizontal blocks, characterized in that, It includes the following steps: S1: Assemble the access panel and the cabin body, and check the gap and step difference between the cabin body and the access panel after assembly; S2: Fix the access panel and the cabin body under the fixing device. When fixing, press the installation sunken metal surface of the access panel and the cabin body. After fixing, recheck the assembly relationship between the access panel and the cabin body; S3: Use a scribing needle with the same diameter as the aperture of the access panel to determine the installation holes on the cabin body and mark the center position of the holes; S4: Remove the access panel; Place the horizontal bubble level on the cabin body, and the center of the horizontal bubble level coincides with the position of the center hole on the cabin body; S5: Adjust the state of the cabin body, and observe that the bubble on the horizontal bubble level coincides with the center hole to align the normal position of the cabin body; S6: Fix the cabin body and remove the horizontal bubble level; Use an ordinary radial drill to process the holes with allowance, and use the installation nails with conical surfaces to detect whether the countersinks of the access panel and the installation holes on the cabin body are in phase coincidence, and then expand the holes with allowance into threaded holes; S7: After the thread inspection is qualified, use the installation nails to fix the access panel. The conical surface of the installation nail is tightly attached and does not protrude from the surface of the access panel, and the installation holes are processed qualified; S8: Repeat the above process to process the threaded holes at other positions.

2. The method for manually drilling a mating hole based on aligning the normal direction of a curved surface with a horizontal block according to claim 1, wherein, In step S1, the step difference is less than 0.1 and the gap is less than 0.

2.

3. The method for manually drilling mating holes based on aligning the normal direction of the curved surface with the horizontal block according to claim 1, wherein, In step S2, the fixing device is a bow-shaped clamp.

4. The method for manually drilling mating holes based on finding the normal direction of the curved surface by using the horizontal block according to claim 1, characterized in that, In step S2, avoid the punching text during fixing and pay attention to protecting the non-metallic access panel.

5. The method for manually drilling mating holes based on aligning the normal direction of the curved surface with the horizontal block according to claim 1, characterized in that, The diameter of the hole with allowance is Φ3mm.

6. The method for manually drilling mating holes based on finding the normal direction of the curved surface by aligning with the horizontal block according to claim 1, wherein The matching accuracy between the access panel and the cabin body is 100%.

7. The method for manually drilling mating holes based on aligning the normal direction of the curved surface with the horizontal block according to claim 1, wherein The material of the access panel is non-metallic.

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