Auxiliary device for deep hole drilling

Abstract

The utility model discloses an auxiliary device for deep hole drilling, and belongs to the technical field of deep hole drilling. Comprising a drill rod and a clamping seat assembled and fixed on the drill rod, a through hole is formed in the middle of the clamping seat in the length direction and serves as a drill rod fixing hole, and a clamping seat fixing boss is formed on one side of the clamping seat in the length direction, and is characterized in that a tensioning groove communicated with the drill rod fixing hole is formed in the other side of the clamping seat in the length direction; the drill rod fixing holes clamp the drill rod in a surrounding mode and are in fastening connection at the position of the tensioning groove, and a set of supporting pieces are evenly distributed on the outer side wall of the drill rod in the length direction. The clamp has the advantages that a gap between the clamp seat and the drill rod can be eliminated, so that the stress of the drill rod is more uniform, and the machining precision of a deep hole is improved; the drill rod is supported on the inner hole wall through the supporting piece in the drilling process, so that the drill rod can be effectively prevented from being bent, the service life is prolonged, and the shock resistance, the stability and the machining precision of deep hole machining are further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to deep hole drilling technical field, concretely relates to a kind of auxiliary device for deep hole drilling. BACKGROUND

[0002] Deep hole drilling technology is currently widely used in various trades, and the most commonly used deep hole drilling method is to first clamp the drill bit and drill rod on the machine tool, then the workpiece rotates while the drill bit advances at a uniform speed and drills the workpiece. During this period, the drill bit releases cooling liquid to cool the drilling position. The size of the deep hole is determined by the diameter of the drill bit, and the depth of the deep hole is determined by the length of the drill rod. However, as the depth of the deep hole continues to increase, the machining accuracy of the deep hole gradually decreases. After long-term observation, the main reason is that the clamping seat structure for clamping the drill rod is not reasonable and the drill rod is too long. First, the existing clamping seat is usually sleeved on the drill rod and fixedly connected by screwing the drill rod through the clamping seat. There is usually a gap between the drill rod and the clamping seat, and the stress after fixation is mainly concentrated at the position of the screw. When the drill bit is working, the drill rod is prone to displacement within the gap, which affects the machining accuracy, and the deeper the drilled hole, the worse the stability and machining accuracy. Second, when the drill rod is long, the drill rod is prone to bending under the action of gravity and drilling reaction force, which affects the accuracy and service life of deep hole machining, and also has the problem of poor shock resistance.

[0003] In view of the above situation, it is necessary to design a deep hole drilling auxiliary device with simple structure and convenient assembly, which can eliminate the gap between the drill rod and the clamping seat and effectively prevent the drill rod from bending to affect the machining accuracy and service life. Therefore, the applicant has made a beneficial design, and the technical scheme to be introduced below is produced in this background. CONTENT OF THE UTILITY MODEL

[0004] The task of the utility model is to provide a deep hole drilling auxiliary device, which helps to improve the clamping seat structure to eliminate the gap between the drill rod and the clamping seat and make the drill rod force more uniform, which is beneficial to improve the drill rod structure to prevent bending by relying on the drill rod in the deep hole, effectively improving the shock resistance, stability and machining accuracy of deep hole machining.

[0005] The task of the utility model is accomplished in this way. A deep hole drilling auxiliary device includes a drill rod and a clamping seat fixedly assembled on the drill rod. A through hole is provided in the middle of the clamping seat along the length direction to form a drill rod fixing hole. A clamping seat fixing boss is formed on one side of the clamping seat along the length direction. A tension slot is provided on the other side of the clamping seat along the length direction, which is in communication with the drill rod fixing hole. The drill rod fixing hole clamps the drill rod in an embracing form and is tightly connected at the position of the tension slot. A group of support members are uniformly distributed on the outer side wall of the drill rod along the length direction.

[0006] In one specific embodiment of the present application, one end of the drill rod is provided with a drill bit, and the sum of the radius of the drill rod and the thickness of the support member is equal to the radius of rotation of the drill bit.

[0007] In another specific embodiment of the present application, at least one tensioning slot is formed in the length direction on the clamping seat and at the inner hole wall of the drill rod fixing hole, and the opening direction of the tensioning slot is towards the axial position of the drill rod fixing hole.

[0008] In yet another specific embodiment of the present application, a group of fastening screw holes are formed in the length direction on the side surface of the clamping seat beside the tensioning slot, and a fastening screw is respectively arranged in each fastening screw hole, and the fastening screw is respectively screwed through one side surface of the clamping seat and the other side surface of the clamping seat to achieve threaded connection, and when the fastening screw is rotated, the tensioning slot is narrowed to make the clamping seat uniformly hold the drill rod through the drill rod fixing hole.

[0009] In still another specific embodiment of the present application, the support member comprises a support seat fixed on the drill rod and a wear-resistant block mounted on the side surface of the support seat away from the drill rod.

[0010] In still another specific embodiment of the present application, a wear-resistant block clamping groove is formed on the side surface of the support seat connected with the wear-resistant block, a wear-resistant block fixing screw hole is formed in the central bottom of the wear-resistant block clamping groove, the side surface of the support seat towards the drill rod is provided with a matching surface matching the contour of the drill rod, and a support seat fixing ear is respectively formed at the upper end and the lower end of the support seat, and a support seat fixing screw is respectively arranged on the support seat fixing ear and fastened with the drill rod after passing through the support seat fixing ear.

[0011] In still another specific embodiment of the present application, the wear-resistant block is a tungsten steel wear-resistant block, and the surface of the wear-resistant step is provided with a curved surface for matching the side wall of the deep hole.

[0012] In still another specific embodiment of the present application, the support member is spaced apart along the length direction of the drill rod and distributed in a spiral shape on the drill rod.

[0013] The utility model discloses adopt the above -mentioned structure, have the beneficial effect: first, because adopt the structure that clamping seat embraces drill rod, thus eliminated the gap between clamping seat and drill rod and make the stress of drill rod more even, effectively improved the machining accuracy of deep hole, second, because adopt the structure that sets up support spare on drill rod, thus drill rod is supported on the inner hole wall through support spare in the drilling process, can effectively avoid the drill rod bending, prolong the service life, further improved the anti -shock, stability and machining accuracy of deep hole processing. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is structural schematic diagram of an embodiment of the utility model;

[0015] Figure 2 It is structural schematic diagram of the clamping seat of the utility model;

[0016] Figure 3 It is structural schematic diagram of the support spare of the utility model;

[0017] Figure 4 It is an embodiment schematic diagram of the drill bit of the utility model.

[0018] In the drawing: 1. drill rod, 2. clamping seat, 21. drill rod fixed hole, 211. tensioning groove, 212. tensioning let -in groove, 22. clamping seat fixed boss, 23. fastening screw, 24. fastening screw hole, 3. support spare, 31. support seat, 311. wear -resisting block card slot, 312. wear -resisting block fixed screw hole, 313. support seat fixed ear, 314. cooperation face, 315. support seat fixed screw, 32. wear -resisting block, 321. wear -resisting step, 322. wear -resisting block fixed screw, 4. drill bit. DETAILED DESCRIPTION

[0019] The specific embodiment of the utility model is described in detail below in combination with the drawings, but the description of the embodiment is not the limitation of the technical scheme, and any form but not substance change according to the concept of the utility model should be regarded as the protection scope of the utility model.

[0020] In the following description, the directional or positional concept of up, down, left, right, front and back is all based on the position shown in the drawing, thus can not be understood as the special limitation of the technical scheme provided by the utility model. Figure 1

[0021] Please refer to Figures 1-4 ​The utility model relates to a kind of auxiliary devices for deep hole drilling, including a drill rod 1 and a clamping seat 2 assembled and fixed on drill rod 1, the middle of the aforementioned clamping seat 2 is provided with a through hole as drill rod fixing hole 21 along length direction, one side of the aforementioned clamping seat 2 is provided with a clamping seat fixed boss 22 along length direction.As the technical innovation point of the utility model lies in: the other side of the aforementioned clamping seat 2 is provided with a tensioning groove 211 communicated with drill rod fixing hole 21 along length direction, the aforementioned drill rod fixing hole 21 is in the form of embrace and holds drill rod 1 and is constructed as fastening connection at tensioning groove 211 position, the outer side wall of the aforementioned drill rod 1 is evenly distributed with a set of support 3 along length direction.

[0022] Further, one end of the aforementioned drill rod 1 is installed with drill bit 4, and the sum of the radius of the aforementioned drill rod 1 plus the thickness of support 3 is same with the rotating radius of drill bit 4.

[0023] Please refer to Figure 2 , the aforementioned clamping seat 2 and located at the inner hole wall of drill rod fixing hole 21 is provided with at least one tensioning displacement slot 212 along length direction, and the opening direction of the aforementioned tensioning displacement slot 212 is towards the axial position of drill rod fixing hole 21.In the embodiment, the number of the aforementioned tensioning displacement slot 212 is two. Preferably, two tensioning displacement slots 212 and tensioning groove 211 are evenly distributed on the inner hole wall of drill rod fixing hole 21 in three equal parts.

[0024] Further, the aforementioned clamping seat 2 is provided with a set of fastening screw holes 24 on the side surface of tensioning groove 211 along length direction, the aforementioned fastening screw hole 24 is respectively provided with a fastening screw 23, the aforementioned fastening screw 23 is respectively screwed from one side surface of clamping seat 2 through tensioning groove 211 and the other side surface of clamping seat to realize threaded connection, when rotating the aforementioned fastening screw 23, the aforementioned tensioning groove 211 narrows and makes clamping seat 2 uniformly hold the aforementioned drill rod 1 through drill rod fixing hole 21.

[0025] Please refer to Figure 3 , the aforementioned support 3 includes a support seat 31 fixed on drill rod 1 and a wear block 32 installed on the side surface of support seat 31 away from drill rod 1.

[0026] Further, the support seat 31 is provided with a wear-resistant block clamping groove 311 on one side connected with the wear-resistant block 32, a wear-resistant block fixing screw hole 312 is formed in the center bottom of the wear-resistant block clamping groove 311, one side of the support seat 31 is provided with a matching surface 314 matched with the contour of the drill rod 1, the upper and lower ends of the support seat 31 are respectively provided with a support seat fixing lug 313, a support seat fixing screw 315 is arranged on the support seat fixing lug 313, the support seat fixing screw 315 is fastened and connected with the drill rod 1 after penetrating through the support seat fixing lug 313, the wear-resistant block 32 is embedded in the wear-resistant block clamping groove 311, the upper and lower ends of one side of the wear-resistant block 32 are provided with wear-resistant steps 321 protruding from the wear-resistant block clamping groove 311, and a wear-resistant block fixing screw 322 is arranged at the position between the two wear-resistant steps 321 of the wear-resistant block 32, and the wear-resistant block fixing screw 322 is fastened and connected with the wear-resistant block fixing screw hole 312 after penetrating through the wear-resistant block 32.

[0027] Preferably, the wear-resistant block 32 is a tungsten steel wear-resistant block, and the surface of the wear-resistant step 321 is provided with a curved surface matched with the side wall of the deep hole.

[0028] Further, the support pieces 3 are arranged at intervals along the length direction of the drill rod 1 and are distributed in a spiral shape on the drill rod 1.

[0029] Please continue to refer to Figures 1-4 When deep hole drilling is needed, the drill rod 1 is first inserted into the drill rod fixing hole 21 of the clamping seat 2, the fastening screw 23 is tightened, the tensioning groove 211 is contracted, the drill rod fixing hole 21 tightly holds the drill rod 1 when the tensioning groove 211 is contracted, the plurality of tensioning displacement grooves 212 are contracted during the holding process, the drill rod fixing hole 21 uniformly applies pressure to the drill rod 1, then the clamping seat 2 is fixed on the machine tool through the clamping seat fixing boss 22, and during the drilling process, the drill bit 4 at the end of the drill rod 1 drills the hole, when the drill rod 1 is inserted into the deep hole, the support pieces 3 are supported on the inner wall of the deep hole through the wear-resistant blocks 32, so that the drill rod 1 can be effectively prevented from being bent, and the anti-shock performance, stability and machining precision of deep hole machining are further improved.

[0030] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, on the premise of not departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be regarded as the protection scope of the present application.

[0031] In summary, the technical scheme provided by the present application makes up for the shortcomings in the prior art, successfully completes the task of the present application, and truly realizes the technical effects described by the applicant in the technical effect column above.

Claims

1. An auxiliary device for deep hole drilling, comprising a drill rod (1) and a clamp (2) mounted and fixed on the drill rod (1), wherein the clamp (2) has a through hole along its length in the middle as a drill rod fixing hole (21), and a clamp fixing boss (22) is formed on one side of the clamp (2) along its length, characterized in that: The other side of the clamp seat (2) is provided with a tension slot (211) along the length direction, which is communicated with the drill rod fixing hole (21). The drill rod fixing hole (21) clamps the drill rod (1) in a surrounding manner and is fastened and connected at the position of the tension slot (211). The outer side wall of the drill rod (1) is uniformly provided with a group of support members (3) along the length direction.

2. An auxiliary device for deep hole drilling according to claim 1, characterized in that: One end of the drill rod (1) is provided with a drill bit (4), and the sum of the radius of the drill rod (1) and the thickness of the support member (3) is the same as the rotating radius of the drill bit (4).

3. The auxiliary device for deep hole drilling according to claim 1, characterized in that: At least one tension slot (212) is provided on the clamp seat (2) and at the inner hole wall of the drill rod fixing hole (21) along the length direction, and the opening direction of the tension slot (212) is towards the axial position of the drill rod fixing hole (21).

4. The auxiliary device for deep hole drilling according to claim 1, characterized in that: A group of fastening screw holes (24) are provided on the side of the clamp seat (2) beside the tension slot (211) along the length direction, and a fastening screw (23) is respectively arranged in each fastening screw hole (24). The fastening screw (23) is respectively screwed from one side of the clamp seat (2) through the tension slot (211) and the other side of the clamp seat to realize the threaded connection. When the fastening screw (23) is rotated, the tension slot (211) is narrowed to uniformly clamp the drill rod (1) through the drill rod fixing hole (21).

5. The auxiliary device for deep hole drilling according to claim 1, characterized in that: The support member (3) comprises a support seat (31) fixed to the drill rod (1) and a wear-resistant block (32) installed on the side of the support seat (31) away from the drill rod (1).

6. An auxiliary device for deep hole drilling according to claim 5, characterized in that: The support seat (31) is provided with a wear-resistant block clamping groove (311) on the side connected with the wear-resistant block (32). A wear-resistant block fixing screw hole (312) is provided in the central bottom of the wear-resistant block clamping groove (311). The side of the support seat (31) towards the drill rod (1) is provided with a matching surface (314) matching the contour of the drill rod (1). The upper and lower ends of the support seat (31) are respectively provided with a support seat fixing ear (313). A support seat fixing screw (315) is respectively arranged on the support seat fixing ear (313). The support seat fixing screw (315) is fastened and connected with the drill rod (1) after penetrating through the support seat fixing ear (313). The wear-resistant block (32) is embedded in the wear-resistant block clamping groove (311). The upper and lower ends of the side of the wear-resistant block (32) are provided with wear-resistant steps (321) protruding from the wear-resistant block clamping groove (311). A wear-resistant block fixing screw (322) is arranged at the position between the two wear-resistant steps (321) of the wear-resistant block (32). The wear-resistant block fixing screw (322) is fastened and connected with the wear-resistant block fixing screw hole (312) after penetrating through the wear-resistant block (32).

7. An auxiliary device for deep hole drilling according to claim 6, characterized in that: The wear-resistant block (32) is a tungsten steel wear-resistant block, and the surface of the wear-resistant step (321) is provided with a curved surface for matching the side wall of the deep hole.

8. The auxiliary device for deep hole drilling according to claim 1, characterized in that: The support members (3) are arranged at intervals along the length direction of the drill rod (1) and are distributed in a spiral shape on the drill rod (1).

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