Stepped hole bottom surface grinding device

Abstract

The utility model discloses a stepped hole bottom surface grinding device, which comprises an electric drill unit, a grinding unit, a grinding unit, a grinding unit and a grinding unit, wherein the electric drill unit is used for clamping the top end of a clamp body and rotating the clamp body; the positioning column is fixed on the middle part of the clamp body and is matched with the stepped hole; the polishing head is detachably fixed on the clamp body and is positioned below the positioning column; the grinding head is tightly attached to the bottom face of the stepped hole and used for grinding the bottom face of the stepped hole. The electric hand drill switch is started, the grinding head is rotated, and the bottom face of the stepped hole is ground; and the coarse gauze grinding head, the fine sandpaper grinding head and the felt grinding head are sequentially replaced, so that the roughness of the bottom surface of the stepped hole is less than or equal to 1.6, and the quality of the shell is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a polishing technical field, specifically, a step hole bottom surface grinding device. BACKGROUND

[0002] A kind of shell parts, shell surface has step hole, it requires that the roughness of step hole bottom surface is less than or equal to 1.6, the surface is sealing surface, requires high.

[0003] In existing production technology, shell surface step hole is milled, sometimes due to the structure problem of material or machining part, causing the roughness of step hole bottom surface to exceed 6.3, not meet the requirements.

[0004] For the problem that the roughness of step hole bottom surface is large and quality is not good in the prior art due to the structure problem of material or machining part when shell surface step hole is milled, currently no effective solution has been proposed. CONTENT OF THE UTILITY MODEL

[0005] The utility model embodiment provides a kind of step hole bottom surface grinding device, to solve the problem that the roughness of step hole bottom surface is large and quality is not good in the prior art due to the structure problem of material or machining part when shell surface step hole is milled.

[0006] To achieve the above-mentioned purpose, the utility model provides a kind of step hole bottom surface grinding device, the device includes: electric drill unit, for clamping the top of concrete detail and makes it rotate;Positioning column, fixed on the middle part of the concrete detail and matched with step hole;Polishing head, detachably fixed on the concrete detail and located below the positioning column;The polishing head is in close contact with the bottom surface of step hole, for polishing the bottom surface of step hole.

[0007] Optionally, the electric drill unit includes: hand electric drill and drill chuck;The bottom end of the hand electric drill is fixedly connected with the top end of the drill chuck, for providing torque for the drill chuck;The drill chuck is used to clamp the concrete detail.

[0008] Optionally, the concrete detail is a cross-shaped structure, including: fixedly connected horizontal rod and vertical rod;The top end of the vertical rod is clamped in the drill chuck;The bottom end of the vertical rod is inserted into the step hole.

[0009] Optionally, the center of the positioning column is provided with a positioning hole, for being inserted into the top end of the vertical rod and being fixed with the vertical rod, and the bottom surface of the positioning column is in close contact with the top surface of the horizontal rod.

[0010] Optionally, the polishing head is provided with a through hole, for being inserted into the bottom end of the vertical rod and being detachably fixed with the horizontal rod, and the top surface of the polishing head is in close contact with the bottom surface of the horizontal rod;The bottom surface of the polishing head is in close contact with the bottom surface of the step hole.

[0011] Optionally, the polishing head is fixed with the horizontal rod through a compression nut.

[0012] Optionally, a gasket is arranged between the polishing head and the compression nut.

[0013] Optionally, the polishing head comprises a coarse cloth polishing head, a fine sandpaper polishing head and a felt polishing head.

[0014] Optionally, the positioning column is made of non-metallic material.

[0015] Optionally, the clamp body is of an integrated structure.

[0016] The beneficial effects of the present application are as follows:

[0017] The present application provides a stepped hole bottom surface grinding device, which comprises: a drill unit for clamping and rotating the top end of a clamp body; a positioning column fixed to the middle part of the clamp body and matched with the stepped hole; a polishing head detachably fixed to the clamp body and located below the positioning column; the polishing head is tightly attached to the bottom surface of the stepped hole and used for polishing the bottom surface of the stepped hole. The present application realizes the polishing of the bottom surface of the stepped hole by starting the hand drill switch and rotating the polishing head; and the coarse cloth polishing head, the fine sandpaper polishing head and the felt polishing head are replaced in sequence, so that the roughness of the bottom surface of the stepped hole is ensured to be less than or equal to 1.6, and the quality of the shell is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of a stepped hole bottom surface grinding device provided by an embodiment of the present application;

[0019] Figure 2 is an exploded view of a stepped hole bottom surface grinding device provided by an embodiment of the present application;

[0020] Figure 3 is a stepped hole structure schematic diagram of a shell provided by an embodiment of the present application.

[0021] SYMBOL EXPLANATION

[0022] Hand drill-1, drill chuck-2, clamp body-3, positioning column-4, polishing head-5, gasket-6, compression nut-7, shell-8, stepped hole-9, stepped hole bottom surface-10. DETAILED DESCRIPTION

[0023] In order to make the utility model's purpose, technical scheme and advantage more clearly, the utility model will be described further in detail below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] In the prior production technology, the surface step hole 9 of the shell 8 is milled, sometimes due to the material or the structure problem of the machined part, the roughness of the step hole bottom surface 10 exceeds 6.3, which cannot meet the requirement. Figure 3 It is the step hole 9 structure schematic view of the shell 8 provided by the utility model embodiments, as shown in Figure 3 Further, since the step hole bottom surface 10 is small in space, it is difficult to polish directly with abrasive cloth, and the step hole bottom surface 10 cannot be polished in place.

[0025] Therefore, the utility model provides a step hole bottom surface 10 grinding device matched with the step hole 9, which ensures that the effective polishing area is 100%; Figure 1 It is the structure schematic view of the step hole bottom surface 10 grinding device provided by the utility model embodiments. Figure 2 It is the exploded view of the step hole bottom surface 10 grinding device provided by the utility model embodiments; as shown in Figure 1 And Figure 2 As shown, the device comprises:

[0026] 1, electric drill unit, for clamping the top end of the concrete 3 and making it rotate;

[0027] Specifically, the electric drill unit comprises a hand drill 1 and a drill chuck 2; the bottom end of the hand drill 1 is fixedly connected with the top end of the drill chuck 2, which is used to provide torque for the drill chuck 2; the drill chuck 2 is used to clamp the concrete 3.

[0028] When the hand drill 1 switch is started, the hand drill 1 provides torque for the drill chuck 2, so that the drill chuck 2 rotates, and the drill chuck 2 clamps the concrete 3, so that the concrete 3 also rotates.

[0029] The concrete 3 is a cross-shaped structure, comprising a fixedly connected horizontal rod and a vertical rod; the top end of the vertical rod is clamped in the drill chuck 2; the bottom end of the vertical rod penetrates into the step hole 9. The concrete 3 is an integral structure.

[0030] 2, positioning column 4, fixed on the middle part of the concrete 3 and matched with the step hole 9;

[0031] Specifically, the center of the positioning column 4 is provided with a positioning hole, which is used to be inserted into the top end of the vertical rod and fixed with the vertical rod, and the bottom surface of the positioning column 4 is tightly attached to the top surface of the horizontal rod. The inner surface of the positioning hole is attached to the outer surface of the vertical rod.

[0032] In specific use, the positioning column 4 is heated, inserted into the top end of the vertical rod, placed on the horizontal rod, and fastened on the vertical rod after cooling.

[0033] The positioning column 4 cooperates with the stepped hole 9 of the shell 8, in order to avoid damaging the inner surface of the stepped hole 9, the material of the positioning column 4 is made of elastic non-metallic material such as nylon, and the positioning column 4 can also play a role of centering.

[0034] 3, the polishing head 5 is detachably fixed on the clamp body 3 and located below the positioning column 4; the polishing head 5 is tightly attached to the stepped hole bottom surface 10, and is used for polishing the stepped hole bottom surface 10.

[0035] Specifically, the polishing head 5 is provided with a through hole, which is used to be inserted into the bottom end of the vertical rod and detachably fixed with the horizontal rod, and the top surface of the polishing head 5 is tightly attached to the bottom surface of the horizontal rod; the bottom surface of the polishing head 5 is tightly attached to the stepped hole bottom surface 10, and is used for polishing the stepped hole bottom surface 10. The inner surface of the through hole is attached to the outer surface of the vertical rod.

[0036] Further, the polishing head 5 is fixed with the horizontal rod by the compression nut 7. That is, the compression nut 7 is inserted into the bottom end of the vertical rod to fix the polishing head 5 with the horizontal rod.

[0037] Further, in order to prevent the compression nut 7 from damaging the polishing head 5, the gasket 6 is arranged between the polishing head 5 and the compression nut 7.

[0038] The polishing head 5 includes: a coarse gauze polishing head 5, a fine sandpaper polishing head 5, and a felt polishing head 5.

[0039] In the specific polishing process, the coarse gauze polishing head 5 is used to polish the stepped hole bottom surface 10 first, the fine sandpaper polishing head 5 is used to polish the stepped hole bottom surface 10 after the first preset roughness range is reached, the felt polishing head 5 is used to polish the stepped hole bottom surface 10 after the second preset roughness range is reached, and the polishing is continued until the roughness of the stepped hole bottom surface 10 is less than or equal to 1.6.

[0040] The specific implementation process of the utility model is described below:

[0041] 1, the positioning column 4 is heated, inserted into the top end of the vertical rod, placed on the horizontal rod, and fastened on the vertical rod after cooling.

[0042] 2, the top of the clamp body 3 is clamped on the drill chuck 2 of the electric drill 1;

[0043] 3, according to the quality of the stepped hole bottom surface 10, the rough sandpaper polishing head 5 is selected first, and the bottom surface of the cross rod of the clamp body 3 is tightly attached through the gasket 6 and the compression nut 7;

[0044] 4, the whole device is deeply inserted into the stepped hole 9 of the shell 8, so that the positioning column 4 is matched with the stepped hole 9, and the bottom surface of the polishing head 5 is tightly attached with the stepped hole bottom surface 10;

[0045] 5, the switch of the electric drill 1 is started, the clamp body 3 is rotated, the polishing head 5 is rotated, and the whole device is manually pressed down, so that the polishing head 5 is always tightly attached with the stepped hole bottom surface 10, and the polishing effect is realized;

[0046] 6, after polishing to the first preset roughness range, the switch is closed, and the polishing head 5 is taken out from the stepped hole 9 of the shell 8;

[0047] 7, the fine sandpaper polishing head 5, the felt polishing head 5 and the like are replaced according to the mode of step 3;

[0048] 8, the actions of steps 4, 5 and 6 are repeated until the roughness of the stepped hole bottom surface 10 reaches the requirement.

[0049] The device realizes the polishing and polishing of the stepped hole bottom surface 10 by starting the switch of the electric drill 1, rotating the clamp body 3 and then rotating the polishing head 5. The problem that the quality cannot be guaranteed by the conventional machining and cutting due to the large roughness and the poor surface quality is solved, and the quality of the shell 8 type part is improved. At the same time, the device can be applied to other assembled shells 8, the loss caused by disassembling the assembled shell 8 is avoided, the quality problem can be treated on site in time, the problem of disassembling and repairing of the large shell 8 is solved, and the high quality of the product is ensured.

[0050] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A stepped hole bottom surface dressing device characterized by, The device comprises: an electric drill unit for clamping and rotating the clamping body; a positioning column fixed to the middle part of the clamping body and matched with the stepped hole; a polishing head detachably fixed to the clamping body and located below the positioning column; the polishing head is tightly attached to the bottom surface of the stepped hole for polishing the bottom surface of the stepped hole.

2. The device according to claim 1, wherein: the electric drill unit comprises a hand drill and a drill chuck; the bottom end of the hand drill is fixedly connected with the top end of the drill chuck for providing torque for the drill chuck; and the drill chuck is used for clamping the clamping body.

3. The device according to claim 2, wherein: the clamping body is of a cross structure comprising a horizontally connected horizontal rod and vertical rod; the top end of the vertical rod is clamped in the drill chuck; and the bottom end of the vertical rod is inserted into the stepped hole.

4. The device according to claim 3, wherein: the center of the positioning column is provided with a positioning hole for being inserted into and fixed with the top end of the vertical rod; and the bottom surface of the positioning column is tightly attached to the top surface of the horizontal rod.

5. The device according to claim 3, wherein: the polishing head is provided with a through hole for being inserted into and detachably fixed with the bottom end of the vertical rod; the top surface of the polishing head is tightly attached to the bottom surface of the horizontal rod; and the bottom surface of the polishing head is tightly attached to the bottom surface of the stepped hole.

6. The device according to claim 5, wherein: the polishing head is fixed with the horizontal rod by a compression nut.

7. The device according to claim 6, wherein: a gasket is arranged between the polishing head and the compression nut.

8. The device according to claim 1, wherein: the polishing head comprises a coarse cloth polishing head, a fine sandpaper polishing head and a felt polishing head.

9. The device according to claim 1, wherein: the positioning column is made of non-metallic material.

10. The device according to claim 1, wherein: the clamping body is of an integrated structure.

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