Tool structure for deep hole machining

Abstract

The utility model discloses a tool structure for deep hole processing, which comprises a rod part and a tool head which are coaxially connected and communicated, the tool head comprises a coarse grinding part and a fine grinding part which are coaxially arranged, and the outer diameter of the coarse grinding part is smaller than that of the fine grinding part; an oil discharging groove extending in the axial direction of the tool head is formed in the outer wall of the tool head, and an oil outlet groove is formed in the end, away from the coarse grinding part, of the fine grinding part in an inwards-sunken mode. One end of the rod part is matched with the accurate grinding part in an inserted mode through the oil outlet groove, and a gap for liquid to pass through is reserved between the rod part and the accurate grinding part. According to the utility model, the roughness, the roundness and the transparency of a processed hole are ensured, the processing efficiency is improved, the polishing process is effectively omitted, one-step processing forming is realized, the overall structure is simple, the implementation is convenient, and the cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to deep hole machining technical field, concretely relates to a tool structure of deep hole machining. BACKGROUND

[0002] The grinding head of deep hole machining is a grinding tool specially used for deep hole machining, mainly used for precision grinding of deep hole, and its structure is shown in the deep hole grinding head for grinding the inner surface of the deep hole of a large workpiece disclosed in patent No. CN205201221U, which comprises a grinding head, a rotating shaft, a fixed support, a cooling device and a motor.

[0003] Such grinding head structure can only perform single rough grinding or fine grinding, has low processing efficiency, needs to be processed in multiple processes, and the cooling liquid supply effect is insufficient, so that the use effect is difficult to meet the demand. UTILITY MODEL CONTENT

[0004] The utility model discloses in order to avoid the deficiency that exists in the prior art, provides a tool structure of deep hole machining of one -off forming.

[0005] The utility model discloses a tool structure of deep hole machining adopts the following technical scheme: a tool structure of deep hole machining, including the coaxial connection and the intercommunication of rod portion and tool head, the tool head includes the coaxial arrangement of rough grinding part and fine grinding part, the outer diameter of rough grinding part is less than the outer diameter of fine grinding part;

[0006] The outer wall of the tool head is provided with the oil discharge groove extending along its axial direction, and the end of the fine grinding part away from the rough grinding part is recessed inward and provided with an oil outlet groove.

[0007] One end of the rod portion is inserted and matched with the fine grinding part through the oil outlet groove, and a gap is left between the rod portion and the fine grinding part for the passage of liquid.

[0008] In several embodiments, the oil outlet groove is annularly arranged on the inner wall of the fine grinding part, and a plurality of oil discharge grooves are uniformly arranged on the outer wall of the tool head.

[0009] In several embodiments, the rod portion comprises a main rod body and a connecting rod body, and the connecting rod body is arranged between the tool head and the main rod body.

[0010] In several embodiments, one end of the connecting rod body protrudes outward and is provided with a first docking ring, and there is a spacing between the inner and outer walls of the first docking ring and the connecting rod body, and the first docking ring is used to be inserted into the oil outlet groove.

[0011] In some embodiments, the first abutment ring has a thickness less than the depth of the oil outlet groove, and the gap through which the liquid is supplied is arranged between the first abutment ring and the oil outlet groove.

[0012] In some embodiments, the other end of the connecting rod body protrudes and is provided with a second abutment ring, and the second abutment ring is inserted and matched with the main rod body.

[0013] In some embodiments, at least one supporting sleeve and at least one positioning sleeve are sleeved on the main rod body.

[0014] In some embodiments, the outer diameter of the rough grinding part has a gradually expanding trend from the end away from the fine grinding part to the end close to the fine grinding part.

[0015] The beneficial effects of the utility model lie in:

[0016] The utility model discloses an integrated structure of the rough grinding part and the fine grinding part, which guarantees the roughness, roundness and transparency of the processed hole, improves the processing efficiency of the glass material precision processing, effectively saves the polishing process, and realizes one-time processing and molding, and the whole structure is simple, convenient to implement and low in cost.

[0017] The utility model discloses the structure of oil supply groove and oil outlet groove realizes the automatic flow of cooling liquid, is convenient for realizing the processing of small aperture deep hole, improves the cooling effect of tool head, realizes the discharge of cutting fluid and grinding dust. DRAWINGS

[0018] The drawings described in the present application are only for the purpose of illustrating selected embodiments, and should not be considered as limiting the scope of the utility model.

[0019] Figure 1 The overall structure of the tool structure of the deep hole processing in embodiment 1 is schematically shown;

[0020] Figure 2 The partial explosion structure of Figure 1 is schematically shown;

[0021] Figure 3 The partial cross-sectional structure of the middle rod part and the tool head in Figure 2 is schematically shown;

[0022] Figure 4 The enlarged structure of A part in Figure 3 is schematically shown. DETAILED DESCRIPTION

[0023] The embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present utility model, but not all embodiments.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] Example 1

[0026] As Figures 1-4 As shown, the deep hole machining tool structure in this embodiment is mainly used for grinding and drilling quartz glass workpieces, especially for small-diameter machining. It includes a rod 10 and a tool head 20 that are coaxially connected and communicate with each other. Both are tubular hollow structures. The tool head 20 includes a coaxially arranged rough grinding part 21 and a fine grinding part 22. The outer diameter of the rough grinding part 21 is smaller than the outer diameter of the fine grinding part 22. The outer diameter of the rough grinding part 21 gradually increases from the end away from the fine grinding part 22 to the end closer to the fine grinding part 22. That is, the rough grinding part 21 is generally frustum-shaped.

[0027] The outer wall of the tool head 20 is provided with an oil drain groove 202 extending along its axial direction. The fine grinding part 22 is provided with an oil outlet groove 201 recessed inward at one end away from the coarse grinding part 21. One end of the rod part 10 is inserted and engaged with the fine grinding part 22 through the oil outlet groove 201. A gap is left between the rod part 10 and the fine grinding part 22 for liquid to pass through.

[0028] Here, the oil outlet groove 201 is arranged in a ring on the inner wall of the fine grinding section 22, and the plurality of oil discharge grooves 202 are evenly arranged on the outer wall of the tool head 20. The oil discharge grooves 202 are generally straight, that is, they are milled along the axial direction on the outer wall of the tool head 20. They extend from the fine grinding section 22 to the middle position of the rough grinding section 21, and their ends form an arc surface structure on the rough grinding section 21.

[0029] The rod 10 includes a main rod body 11 and a connecting rod body 12, with the connecting rod body 12 disposed between the tool head 20 and the main rod body 11.

[0030] The first butt joint ring 121 is arranged on the one end of the connecting rod body 12 and protrudes outward, the first butt joint ring 121 is inserted into the oil outlet groove 201, and the thickness of the first butt joint ring 121 is smaller than the depth of the oil outlet groove 201.

[0031] The second butt joint ring 122 is arranged on the other end of the connecting rod body 12 and protrudes outward, and the second butt joint ring 122 is inserted into the main rod body 11.

[0032] The support sleeve 30 and the positioning sleeve 40 are arranged on the main rod body 11, and the support sleeve 30 and the positioning sleeve 40 are connected to the deep hole drilling equipment.

[0033] In use, the main rod body 11 is arranged on the equipment main shaft, the rotating main shaft and the feed are arranged, the support sleeve 30 and the positioning sleeve 40 provide stable support for the tool head 20 during rotation, the cutting fluid is transported to the oil outlet groove 201 in the tool head 20 through the rod part 10, the cutting fluid flows out from the small gap between the oil outlet groove 201 and the rod part 10 to the outer wall of the tool head 20 and the oil discharge groove 202 under pressure, and the cutting fluid and the grinding glass powder are discharged from the hole gap to the outside of the workpiece under the action of pressure.

[0034] In use, the front end of the tool head 20 is the rough grinding part 21, the grinding speed is accelerated, and the machining efficiency is improved, the rear end of the tool head 20 is the fine grinding part 22, the smoothness of the inner wall of the hole is improved, the loss of the equipment and the grinding head is minimized, the machining efficiency and the service life of the cutter are greatly improved, and the machining cost is reduced; at the same time, the machining efficiency is improved by 50%, the machining precision is improved by 100%, the smoothness can reach Ra0.1-0.2, the machining precision and the machining efficiency of the glass material are improved, the polishing process is effectively saved, and one-time forming is realized.

[0035] All the modes described in the specification can be performed in any suitable order. Any and all examples, or exemplary languages provided herein (such as "for example"), are merely used to better illustrate the present application, and are not intended to limit the scope of the present application, unless the claims. The language in the detailed description should not be understood as indicating any essential factors for practicing the present application that are not claimed.

[0036] The utility model describes the preferred implementation scheme, including the best way of carrying out the utility model known to the inventor. Of course, the skilled person in the art can obviously see the changes of these preferred implementation schemes. The inventor envisages that the skilled person can use the changes at discretion, and the inventor points out that the utility model can be implemented in other ways different from the specific above-mentioned in the text. Therefore, the utility model includes all improvements included in the utility model main idea and scope defined by the claims. Moreover, unless otherwise stated or obviously contradictory in content, the utility model includes any of the above factors and all possible changes thereof.

Claims

1. A tool structure for deep hole machining, comprising a shank (10) and a tool head (20) connected coaxially and in communication, characterized in that, The tool head (20) comprises coaxially arranged coarse grinding part (21) and fine grinding part (22), the outer diameter of the coarse grinding part (21) is less than the outer diameter of the fine grinding part (22); The outer wall of the tool head (20) is provided with oil discharge groove (202) extending along the axial direction, the fine grinding part (22) is provided with oil discharge groove (201) inwardly recessed from the end away from the coarse grinding part (21); The rod part (10) is inserted and matched with the fine grinding part (22) through the oil discharge groove (201), and a gap for liquid passing is left between the rod part (10) and the fine grinding part (22).

2. A tool structure for deep hole machining according to claim 1, wherein The oil discharge groove (201) is annularly arranged on the inner wall of the fine grinding part (22), and a plurality of oil discharge grooves (202) are uniformly arranged on the outer wall of the tool head (20).

3. A tool structure for deep hole machining according to claim 1, wherein The rod part (10) comprises main rod body (11) and connecting rod body (12), and the connecting rod body (12) is arranged between the tool head (20) and the main rod body (11).

4. A tool structure for deep hole machining according to claim 3, wherein The connecting rod body (12) is outwardly protruded at one end and is provided with first butt joint ring (121), and the first butt joint ring (121) is spaced apart from the inner and outer walls of the connecting rod body (12), and the first butt joint ring (121) is used to be inserted into the oil discharge groove (201).

5. A tool structure for deep hole machining according to claim 4, wherein The thickness of the first butt joint ring (121) is less than the depth of the oil discharge groove (201), and the gap for liquid passing is arranged between the first butt joint ring (121) and the oil discharge groove (201).

6. A tool structure for deep hole machining according to claim 4, wherein The other end of the connecting rod body (12) is outwardly protruded and is provided with second butt joint ring (122), and the second butt joint ring (122) is inserted and matched with the main rod body (11).

7. A tool structure for deep hole machining according to claim 4, wherein At least one supporting sleeve (30) and at least one positioning sleeve (40) are sleeved on the main rod body (11).

8. The tool structure for deep hole machining according to claim 1, wherein The outer diameter of the coarse grinding part (21) has a gradually expanding trend from the end away from the fine grinding part (22) to the end close to the fine grinding part (22).

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