Small hole device for supporting small-diameter gun drill

Abstract

The small hole device for supporting the small-diameter gun drill comprises a supporting device connecting piece, an inner supporting body is arranged in the supporting device connecting piece in a sleeved mode, a hole cavity penetrating through the two ends of the inner supporting body is formed in the inner supporting body, and the two ends of the inner supporting body are connected with bearing sleeving assemblies matched with the hole cavity. The lower portion of one end of the inner supporting body is provided with an open groove communicated with the hole cavity, and the supporting device connecting piece is provided with an opening corresponding to the open groove in position. Compared with the prior art, the small hole device for supporting the small-diameter gun drill has the advantage that the small hole device for supporting the small-diameter gun drill is good in supporting effect on the small-diameter gun drill.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool gun drill deep hole processing, in particular to a small hole device for supporting a small-diameter gun drill. Background Art

[0002] In deep holes, in order to ensure the stability of gun drilling processing, the suspended length of the gun drill cannot exceed 35 times the diameter of the drill rod. Otherwise, the drill rod will bend due to high rotation. In severe cases, the drill rod will break, causing damage to the machine tool and personnel. See Figure 1 Hint.

[0003] Inside the chip box of the gun drill machine, due to the complex spatial structure, the problem of insufficient support for small-diameter gun drills is more serious. Therefore, small-diameter drilling is very difficult.

[0004] In traditional structures, the overhang length of the gun drill is relatively large. The smaller the diameter of the gun drill, the greater the impact of the overhang length on the instability of processing. Usually, for a gun drill with a diameter less than φ3mm, the overhang length exceeds 35-60 times the diameter of the drill rod, resulting in abnormal processing. Utility Model Content

[0005] 1. Problems to be solved

[0006] The technical problem to be solved by the utility model is that the internal support of the chip removal box for the small-diameter gun drill is insufficient during deep hole processing in the existing gun drill processing, which easily affects the normal processing use.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: a small hole device for supporting a small-diameter gun drill, comprising a supporter connecting piece, wherein an inner support body is sleeved in the supporter connecting piece, and a hole cavity is provided in the inner support body through both ends thereof, and both ends of the inner support body are connected with a bearing sleeve assembly matched with the hole cavity;

[0009] A slot communicating with the cavity is formed at the lower part of one end of the inner support body, and an opening corresponding to the slot is formed on the support connector.

[0010] As an improvement, the bearing sleeve assembly includes a support sleeve, a bearing body and a bearing support cover connected between the inner support body and the bearing body;

[0011] The middle part of the support sleeve is provided with a small hole groove penetrating through the two ends thereof, the bearing body is sleeved on the outside of the small hole groove, and the outer wall of the bearing body is sleeved into the hole cavity.

[0012] As an improvement, the end of the support sleeve is provided with a flange outside the hole cavity, the end of the inner support body is recessed with a bearing groove coaxially arranged with the hole cavity, and the bearing body is sleeved between the flange and the bearing groove.

[0013] As an improvement, the outer side wall of the inner support body is provided with a threaded protrusion, and the bearing support cover is threadably matched with the threaded protrusion.

[0014] As an improvement, the support connecting member is provided with a plurality of bolt connecting grooves along its circumferential direction.

[0015] (III) Beneficial effects

[0016] The advantages of the utility model compared with the prior art are: when used in the present application, a double-support rotating structure is adopted, and at the same time, when the structure of the present application is used, the front section is deeply inserted into the chip removal box, which shortens the distance between the gun drill and the guide sleeve when in use, shortens the support distance, and meets the support use of small-diameter gun drills. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the drill pipe rotating in mid-air.

[0018] Figure 2 The present invention is a structural schematic diagram of a small hole device for supporting a small diameter gun drill.

[0019] Figure 3 The present invention is a structural schematic diagram of a small hole device for supporting a small diameter gun drill from a second perspective.

[0020] Figure 4 The present invention is a structural schematic diagram of a cross-sectional view of a small hole device for supporting a small-diameter gun drill.

[0021] Figure 5 The present invention is a structural schematic diagram of a cross-sectional view of a small hole device for supporting a small-diameter gun drill.

[0022] As shown in the figure: 1. Support connector; 2. Inner support body; 3. Hole cavity; 4. Hole cavity; 5. Opening; 6. Support sleeve; 7. Bearing body; 8. Bearing support cover; 9. Small hole groove; 10. Flange; 11. Bearing groove; 12. Threaded protrusion; 13. Bolt connection groove. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0024] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0028] Please refer to the attached Figure 1-5 A small hole device for supporting a small-diameter gun drill comprises a support connector 1, wherein an inner support body 2 is sleeved inside the support connector 1, and a cavity 3 is arranged inside the inner support body 2 and passes through both ends thereof, and a groove 4 connected to the cavity 3 is arranged at the lower part of one end of the inner support body 2, and an opening 5 corresponding to the position of the groove 4 is arranged on the support connector 1.

[0029] In order to ensure the support, both ends of the inner support body 2 are connected with a bearing sleeve assembly matched with the hole cavity 3; the bearing sleeve assembly includes a support sleeve 6, a bearing body 7 and a bearing support cover 8 connected between the inner support body 2 and the bearing body 7;

[0030] The middle part of the support sleeve 6 is provided with a small hole groove 9 which runs through the two ends thereof, the bearing body 7 is sleeved on the outside of the small hole groove 9, and the outer wall of the bearing body 7 is sleeved into the cavity 3. In order to facilitate the connection and use of the support sleeve 6, the bearing body 7 and the bearing support cover 8:

[0031] The end of the support sleeve 6 is located outside the cavity 3 and is provided with a flange 10, the end of the inner support body 2 is recessed with a bearing groove 11 coaxially arranged with the cavity 3, the bearing body 7 is sleeved between the flange 10 and the bearing groove 11, and at the same time, the outer wall of the inner support body 2 is convexly provided with a threaded protrusion 12, and the bearing support cover 8 is threadedly matched with the threaded protrusion 12.

[0032] In the specific implementation of the utility model, a plurality of bolt connection grooves 13 are further provided on the support connector 1 along its circumferential direction, and the equipment can be installed inside the chip removal box by installing bolts therein. The opening 5 and one end of the slot 4 extend into the chip removal box, shortening the support distance between the gun drill and the guide sleeve. The front and rear two support sleeves reduce the support length of the drill rod to within 35 times of the diameter. At the same time, in the present application, the support sleeve is made of polyurethane material, closely fits the drill rod, and can rotate at high speed with the drill rod.

[0033] In one embodiment,

[0034] In order to reduce the weight, the inner support body is made of hard aluminum material and anodized, which greatly enhances the wear resistance and hardness. The bearing body uses a high-speed bearing. In order to prevent the influence of iron filings on the bearing, a high-speed bearing with dust covers on both ends is selected.

[0035] This small diameter gun drill support can realize high-speed rotation of the drill rod and ensure the stability of the drill rod. It has achieved good results in small diameter gun drill machine tools.

[0036] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0037] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0038] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A small-diameter gun drill support hole punch, characterized in that: The invention comprises a support connecting member (1), wherein an inner support body (2) is sleeved inside the support connecting member (1), a hole cavity (3) is arranged through both ends of the inner support body (2), and both ends of the inner support body (2) are connected with a bearing sleeve assembly arranged in cooperation with the hole cavity (3); A slot (4) communicating with the cavity (3) is provided at the lower part of one end of the inner support body (2), and an opening (5) corresponding to the slot (4) is provided on the support connector (1).

2. A small-diameter gun drill support hole punch according to claim 1, characterized in that: The bearing sleeve assembly comprises a support sleeve (6), a bearing body (7) and a bearing support cover (8) connected between the inner support body (2) and the bearing body (7); The middle part of the support sleeve (6) is provided with a small hole groove (9) penetrating through the two ends thereof, the bearing body (7) is sleeved on the outside of the small hole groove (9), and the outer wall of the bearing body (7) is sleeved into the hole cavity (3).

3. A small-diameter gun drill support hole punch according to claim 2, characterized in that: The end of the support sleeve (6) is located outside the cavity (3) and is provided with a flange (10); the end of the inner support body (2) is recessed with a bearing groove (11) coaxially arranged with the cavity (3); and the bearing body (7) is sleeved between the flange (10) and the bearing groove (11).

4. A small-diameter gun drill support hole punch according to claim 3, characterized in that: The outer wall of the inner support body (2) is provided with a threaded protrusion (12) protruding outwardly, and the bearing support cover (8) is threadably matched with the threaded protrusion (12).

5. The small-diameter gun drill support hole punch according to claim 1, characterized in that: The supporter connecting piece (1) is also provided with a plurality of bolt connection grooves (13) along its circumferential direction.

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